lcd panel design 2020 brands
A significant aspect of any living room interior is a strong, lovely and functional LCD TV screen unit. Whether it"s a tiny or big building, most Bangalore or Kerala interior designers advise you to spend enough research before finalizing the entertainment unit design.
The Hisense U8H matches the excellent brightness and color performance of much pricier LCD TVs, and its Google TV smart platform is a welcome addition. But it’s available in only three screen sizes.
The Hisense U8H is the best LCD/LED TV for most people because it delivers the performance of a much pricier TV yet starts at under $1,000, for the smallest (55-inch) screen size. This TV utilizes quantum dots, a full-array backlight with mini-LEDs, and a 120 Hz refresh rate to deliver a great-looking 4K HDR image. It’s compatible with every major HDR format. And it’s equipped with two full-bandwidth HDMI 2.1 inputs to support 4K 120 Hz gaming from the newest Xbox and PlayStation consoles. Add in the intuitive, fully featured Google TV smart-TV platform, and the U8H’s price-to-performance ratio is of inarguable value.
The onboard Google TV smart platform is another feather in this TV’s cap. As usual, however, it will be much more satisfying to use if you have a Google account and already take advantage of Google’s connected services, like Photos. The experience of navigating the TV’s smart features—scanning QR codes to sign into apps, using the onscreen keyboard, and browsing your Google Photos to set a photo as a screensaver—was very satisfying in terms of responsiveness and speed. Powering on the TV and booting into an app took just seconds. The included Bluetooth remote is also equipped with a handy “Hey Google” button, allowing you to pull up Google’s assistant and use voice commands to search for content or set a reminder. If you have multiple users with their own Google accounts, you can designate separate profiles (attached to a Gmail account) so that each user can customize the experience to their liking, as well as access their own Google Drive or Photos. While some reviewers have reported instances of momentary freezing while using the U8H’s platform, I didn’t personally experience any instances of slowdown that were egregiously worse than with any other smart-TV platform.
In terms of design, the Hisense U8H is not as svelte as our upgrade pick, but it’s plenty sturdy and doesn’t look or feel cheap. Two narrow, metal feet jut out from beneath the panel and steadily hold the TV. They can be attached in two separate spots, either closer in toward the middle of the panel or out toward the edges, to account for different-size TV stands. The feet are also equipped with cable organization clasps—a nice touch for keeping your TV stand free of cable clutter. Though the TV is primarily plastic, its bezels are lined with metal strips, providing a bit more durability in the long run. I moved it around my home, and it was no worse for wear, but we’ll know more after doing some long-term testing.
The Hisense U8H has some difficulties with banding, or areas of uneven gradation, where transitions that should appear smooth instead look like “bands” of color (sometimes also called posterization). Like many current 4K HDR TVs, the U8H uses an 8-bit panel rather than a 10-bit panel, which affects the color decoding and color presentation process. This is usually relevant only with HDR video and games. When playing games on the PlayStation 5 and Xbox Series X, I saw a few instances where the content wasn’t rendered correctly and displayed ugly splotches of color on the screen. However, this almost always occurred during static screens (such as a pause menu or loading screen); I rarely spotted it during actual gameplay. Hisense has stated that it would address the problem in a future firmware update, but at the time of writing it was still present. This is a flaw that may give dedicated gamers pause, but we don’t consider it to be a dealbreaker for most people.
Although the UH8 TV has four HDMI inputs, only two of them are fully HDMI 2.1–compatible. And one of those is designated as the eARC input (intended as an audio connection for a soundbar or AV receiver connection). So if you’re pairing an external audio system with the U8H, you may have only one input remaining that can support HDMI 2.1 features like 4K 120 Hz playback, variable refresh rate, and auto game mode; this could be a dealbreaker if you own more than one current-gen gaming console. If you’re in that boat, you may want to splash out some extra dough for our upgrade pick. Additionally, folks using pre-HDMI source devices—like the five-cable composite connector with green, red, blue, and red/white audio inputs—should be aware that this TV requires an adapter to allow those devices to connect, and an adapter is not included in the box.
Finally, like most TVs that use vertical alignment (VA) LCD panels, the U8H has a limited horizontal viewing angle, which may be a bit annoying if you’re hoping to entertain a large crowd. Our upgrade pick uses a special wide-angle technology to address this.
Prices for all TV panel sizes fluctuated and are forecast to fluctuate between 2020 and 2022. The period from March 2020 to July 2021 saw the biggest price increases, when a 65" UHD panel cost between 171 and 288 U.S. dollars. In the fourth quarter of 2021, such prices fell and are expected to drop to an even lower amount by March 2022.Read moreLCD TV panel prices worldwide from January 2020 to March 2022, by size(in U.S. dollars)Characteristic32" HD43" FHD49"/50" UHD55" UHD65" UHD------
DSCC. (January 10, 2022). LCD TV panel prices worldwide from January 2020 to March 2022, by size (in U.S. dollars) [Graph]. In Statista. Retrieved March 11, 2023, from https://www.statista.com/statistics/1288400/lcd-tv-panel-price-by-size/
DSCC. "LCD TV panel prices worldwide from January 2020 to March 2022, by size (in U.S. dollars)." Chart. January 10, 2022. Statista. Accessed March 11, 2023. https://www.statista.com/statistics/1288400/lcd-tv-panel-price-by-size/
DSCC. (2022). LCD TV panel prices worldwide from January 2020 to March 2022, by size (in U.S. dollars). Statista. Statista Inc.. Accessed: March 11, 2023. https://www.statista.com/statistics/1288400/lcd-tv-panel-price-by-size/
DSCC. "Lcd Tv Panel Prices Worldwide from January 2020 to March 2022, by Size (in U.S. Dollars)." Statista, Statista Inc., 10 Jan 2022, https://www.statista.com/statistics/1288400/lcd-tv-panel-price-by-size/
DSCC, LCD TV panel prices worldwide from January 2020 to March 2022, by size (in U.S. dollars) Statista, https://www.statista.com/statistics/1288400/lcd-tv-panel-price-by-size/ (last visited March 11, 2023)
LCD TV panel prices worldwide from January 2020 to March 2022, by size (in U.S. dollars) [Graph], DSCC, January 10, 2022. [Online]. Available: https://www.statista.com/statistics/1288400/lcd-tv-panel-price-by-size/
(updated post) In early 2020 Digital View provided a connection solution using the Digital View ALT-1920 LCD controller board to drive a true circular panel from AUO. Measuring 23.6″ in diameter this novel LCD panel will doubtless find application in various types of digital signage. I can think of a few well-known company logos that would fit well and should unleash some creative content design.
LCD Controller Board ALT-1920: Designed for general professional display applications such as digital signage it enables HDMI, DisplayPort and VGA video input. The setup to match this panel will provide the suitable EDID information back to a graphics card to format the image on the panel.
The ALT-1920 features a very low latency and, like all Digital View LCD controller boards, it is high reliability. Full details are available on the webpage.
While some users may look to this panel as an innovative shape for digital signage, easpecially companies with a round logo, another fairly obvious application is a touch table.
Information on two types of flat-panel display at the Zürich Hauptbahnhof railway station: an orange LED display (top right) and a LCD screen (bottom)
A flat-panel display (FPD) is an electronic display used to display visual content such as text or images. It is present in consumer, medical, transportation, and industrial equipment.
Flat-panel displays are thin, lightweight, provide better linearity and are capable of higher resolution than typical consumer-grade TVs from earlier eras. They are usually less than 10 centimetres (3.9 in) thick. While the highest resolution for consumer-grade CRT televisions was 1080i, many flat-panel displays in the 2020s are capable of 1080p and 4K resolution.
In the 2010s, portable consumer electronics such as laptops, mobile phones, and portable cameras have used flat-panel displays since they consume less power and are lightweight. As of 2016, flat-panel displays have almost completely replaced CRT displays.
Most 2010s-era flat-panel displays use LCD or light-emitting diode (LED) technologies, sometimes combined. Most LCD screens are back-lit with color filters used to display colors. In many cases, flat-panel displays are combined with touch screen technology, which allows the user to interact with the display in a natural manner. For example, modern smartphone displays often use OLED panels, with capacitive touch screens.
Flat-panel displays can be divided into two display device categories: volatile and static. The former requires that pixels be periodically electronically refreshed to retain their state (e.g. liquid-crystal displays (LCD)), and can only show an image when it has power. On the other hand, static flat-panel displays rely on materials whose color states are bistable, such as displays that make use of e-ink technology, and as such retain content even when power is removed.
The first engineering proposal for a flat-panel TV was by General Electric in 1954 as a result of its work on radar monitors. The publication of their findings gave all the basics of future flat-panel TVs and monitors. But GE did not continue with the R&D required and never built a working flat panel at that time.Aiken tube, developed in the early 1950s and produced in limited numbers in 1958. This saw some use in military systems as a heads up display and as an oscilloscope monitor, but conventional technologies overtook its development. Attempts to commercialize the system for home television use ran into continued problems and the system was never released commercially.
The Philco Predicta featured a relatively flat (for its day) cathode ray tube setup and would be the first commercially released "flat panel" upon its launch in 1958; the Predicta was a commercial failure. The plasma display panel was invented in 1964 at the University of Illinois, according to The History of Plasma Display Panels.
The MOSFET (metal–oxide–semiconductor field-effect transistor, or MOS transistor) was invented by Mohamed M. Atalla and Dawon Kahng at Bell Labs in 1959,Paul K. Weimer at RCA developed the thin-film transistor (TFT) in 1962.Bernard J. Lechner of RCA Laboratories in 1968.dynamic scattering LCD that used standard discrete MOSFETs.
The first active-matrix addressed electroluminescent display (ELD) was made using TFTs by T. Peter Brody"s Thin-Film Devices department at Westinghouse Electric Corporation in 1968.Westinghouse Research Laboratories demonstrated the first thin-film-transistor liquid-crystal display (TFT LCD).active-matrix liquid-crystal display (AM LCD) using TFTs in 1974.
By 1982, pocket LCD TVs based on LCD technology were developed in Japan.Epson ET-10Epson Elf was the first color LCD pocket TV, released in 1984.Sharp research team led by engineer T. Nagayasu demonstrated a 14-inch full-color LCD display,electronics industry that LCD would eventually replace CRTs as the standard television display technology.high-resolution and high-quality electronic visual display devices use TFT-based active-matrix displays.
Ching W. Tang and Steven Van Slyke at Eastman Kodak built the first practical organic LED (OLED) device in 1987.Hynix produced an organic EL driver capable of lighting in 4,096 colors.Sony Qualia 005 was the first LED-backlit LCD display.Sony XEL-1, released in 2007, was the first OLED television.
Field-effect LCDs are lightweight, compact, portable, cheap, more reliable, and easier on the eyes than CRT screens. LCD screens use a thin layer of liquid crystal, a liquid that exhibits crystalline properties. It is sandwiched between two glass plates carrying transparent electrodes. Two polarizing films are placed at each side of the LCD. By generating a controlled electric field between electrodes, various segments or pixels of the liquid crystal can be activated, causing changes in their polarizing properties. These polarizing properties depend on the alignment of the liquid-crystal layer and the specific field-effect used, being either Twisted Nematic (TN), In-Plane Switching (IPS) or Vertical Alignment (VA). Color is produced by applying appropriate color filters (red, green and blue) to the individual subpixels. LCD displays are used in various electronics like watches, calculators, mobile phones, TVs, computer monitors and laptops screens etc.
Most earlier large LCD screens were back-lit using a number of CCFL (cold-cathode fluorescent lamps). However, small pocket size devices almost always used LEDs as their illumination source. With the improvement of LEDs, almost all new displays are now equipped with LED backlight technology. The image is still generated by the LCD layer.
QLED or quantum dot LED is a flat panel display technology introduced by Samsung under this trademark. Other television set manufacturers such as Sony have used the same technology to enhance the backlighting of LCD TVs already in 2013.wavelength such as blue LEDs. This type of LED TV enhances the colour gamut of LCD panels, where the image is still generated by the LCD. In the view of Samsung, quantum dot displays for large-screen TVs are expected to become more popular than the OLED displays in the coming years; Firms like Nanoco and Nanosys compete to provide the QD materials. In the meantime, Samsung Galaxy devices such as smartphones are still equipped with OLED displays manufactured by Samsung as well. Samsung explains on their website that the QLED TV they produce can determine what part of the display needs more or less contrast. Samsung also announced a partnership with Microsoft that will promote the new Samsung QLED TV.
Static flat-panel displays rely on materials whose color states are bistable. This means that the image they hold requires no energy to maintain, but instead requires energy to change. This results in a much more energy-efficient display, but with a tendency toward slow refresh rates which are undesirable in an interactive display. Bistable flat-panel displays are beginning deployment in limited applications (cholesteric liquid-crystal displays, manufactured by Magink, in outdoor advertising; electrophoretic displays in e-book reader devices from Sony and iRex; anlabels; interferometric modulator displays in a smartwatch).
Kawamoto, H. (2012). "The Inventors of TFT Active-Matrix LCD Receive the 2011 IEEE Nishizawa Medal". Journal of Display Technology. 8 (1): 3–4. Bibcode:2012JDisT...8....3K. doi:10.1109/JDT.2011.2177740. ISSN 1551-319X.
Brody, T. Peter; Asars, J. A.; Dixon, G. D. (November 1973). "A 6 × 6 inch 20 lines-per-inch liquid-crystal display panel". 20 (11): 995–1001. Bibcode:1973ITED...20..995B. doi:10.1109/T-ED.1973.17780. ISSN 0018-9383.
Morozumi, Shinji; Oguchi, Kouichi (12 October 1982). "Current Status of LCD-TV Development in Japan". Molecular Crystals and Liquid Crystals. 94 (1–2): 43–59. doi:10.1080/00268948308084246. ISSN 0026-8941.
Nagayasu, T.; Oketani, T.; Hirobe, T.; Kato, H.; Mizushima, S.; Take, H.; Yano, K.; Hijikigawa, M.; Washizuka, I. (October 1988). "A 14-in.-diagonal full-color a-Si TFT LCD". Conference Record of the 1988 International Display Research Conference: 56–58. doi:10.1109/DISPL.1988.11274. S2CID 20817375.
:This award is granted for a novel component that significantly enhanced the performance of a display. A component is sold as a separate part destined to be incorporated into a display. A component may also include display-enhancing materials and/or parts fabricated with new processes, or display test equipment. Note: Display panels or modules should be nominated in the Display of the Year category rather than in the component category. Download here.
Eco2 OLED is a technology that removes the polarizer, which is used to reduce the reflection of external light and integrates its functionality into the OLED panel layer. The Eco2OLED display is eco-friendly by reducing the use of plastics. The technology improves energy efficiency and reduces power consumption.
The 3M HARP lens integrates a birefringent reflective polarizer used to produce compact, mid-field-of-view (FoV) eyepieces and wide-FoV optics for virtual reality (VR) head-mounted displays using folded optics in the lens configuration. Multiple configurations for folded optic lens systems may be optimized, with varying performance relative to refractive systems. Polarization control is an important consideration, and different components cause different polarizing effects. Further, there are additional benefits of using folded optics in designs for mid- and wide-FoV in VR systems.
compared with traditional leds, minileds have smaller particle size and higher brightness, which can bring better display effects to the lcd with a miniled backlight unit. meanwhile, it is more energy-efficient and supports accurate local dimming to avoid the uniformity problem that occurs with led backlight units. the active-matrix (am) driving glass substrate technology adopted by the chip-on-glass (cog) miniled backlight unit from boe is based on semiconductor technology and uses a glass substrate through boe’s lateral processing technology. glass is more suitable for making led backlight arrays with dense arrangement and heat concentration. the miniled unit is directly bonded to the glass substrate to realize the high-speed transfer of the led chips and can realize precise, independent dimming control of the backlight unit.
The xQDEF Diffuser Plate brings together the color and brightness performance of QDEF quantum-dot (QD) technology with the precise light diffusion necessary for perfect contrast levels in miniLED and full-array local-dimming LCDs. As a direct replacement for diffuser plate components in direct-lit LCDs, the xQDEF Diffuser Plate simplifies the display assembly process, allowing display makers to design and build the most cost-effective displays with the widest color gamut. Compared with other wide color gamut solutions, the xQDEF Diffuser Plate implementation results in close to no additional material costs. By the end of 2021, more than a million TVs with xQDEF Diffuser Plates inside shipped into the market.
With its 32‐inch LCD panel, 6K Retina resolution, and over 20 million pixels, Apple Pro Display XDR (Fig . 1) sets a new bar for the capabilities of a professional display. Designed for pro users who rely on color accuracy and true‐to‐life image reproduction, such as photographers, video editors, 3D animators, and colorists, Pro Display XDR delivers the most comprehensive set of features ever offered on a display in its price range.
Featuring P3 wide color and 10‐bit color depth, Pro Display XDR is expertly calibrated at the factory to ensure billions of colors can be reproduced with exceptional accuracy. And features such as built‐in reference modes make it easy to match the viewing requirements of content creation workflows. With 1000 nits of full‐screen sustained brightness and 1600 nits peak, a 1,000,000:1 contrast ratio, and an Apple‐designed backlight system for optimized light shaping, Pro Display XDR sets a new industry standard for reference‐quality imaging at a fraction of the size, weight, and cost of traditional reference monitors.
Here"s how Pro Display XDR is engineered to produce industry‐leading imagery: Traditional LCD displays use edge‐lit backlight technology to diffuse light evenly across the display at the same brightness level. Instead, Pro Display XDR uses a locally dimmed backlight with 576 individual LEDs, controlled by an advanced algorithm in the timing controller chip. As a result, the display can exhibit incredibly bright, color‐accurate image areas and deep blacks simultaneously, delivering its 1,000,000:1 contrast ratio and up to 1600 nits peak brightness. An advanced thermal management system supports the display to maintain peak brightness indefinitely in environments up to 25° C. With these features, Pro Display XDR introduces Extreme Dynamic Range (XDR), far outperforming typical HDR brightness specifications for desktop displays and enabling pros to work with true‐to‐life content.
Pro Display XDR also incorporates several innovations to optimize image quality compared to traditional LCD displays. First, to minimize “blooming,” a halo effect surrounding bright objects on dark backgrounds, an Apple‐designed cavity reflector is layered on top of the LEDs and optimized geometrically. Along with several additional custom lenses and reflective layers, it directs the light upward while reducing halo effects and preserving light uniformity.
The display industry has experimented with various technologies to better reflect natural images and a wide range of colors on screens, and with the emergence of LED local dimming and HDR, display performance has substantially improved. However, traditional LCD screens’ brightness has long been considered relatively high in low grayscale. In other words, it isn"t black enough, and it"s difficult to use local image technology to differentiate the sense of depth with a high‐contrast ratio.
As a breakthrough in thin‐film transistor (TFT)‐LCD technology, BOE"s dual‐cell panel (Fig . 2) — referred to as “BD Cell” for short—offers several important technical advancements that conventional LCD screens don"t. The display uses pixel‐level ultra‐fine backlight control technology and a brand‐new integrated circuit (IC) driving technology to make the million‐level contrast ratio rate and 12 bits’ color depth come true, accurately displaying more natural and true‐to‐life colors.
The contrast ratio of a conventional LCD screen is 3,000:1 with 0.2 nits as the lowest brightness. The BD Cell"s screen is capable of raising the contrast ratio up to 150,000:1 and decreasing brightness to 0.003 nit. In terms of combining LED local dimming with BD Cell technology, the contrast ratio can be as high as 2,000,000:1. Moreover, while a conventional LCD screen"s color depth is 8 bit, BD Cell is capable of boosting the color depth as high as 12 bit with an enhanced IC driving algorithm. On the other hand, BD Cell incorporates advantages of an LCD screen"s stableness and technological maturity, with no image sticking.
In the end, “the successful development of BD Cell substantially increases the lifespan and the competitiveness of LCD technology, bringing a better visual experience to consumers and more possibilities for the entire display industrial chain,” says Feng Yuan, vice president of BOE Technology Group.
To achieve those specifications, Samsung has developed highly effective electroluminescent material and highly durable components. To make an inward foldable display with a bending radius of 1.5 millimeters (mm), all the layers within the panel should be folded without causing any cracks. As a result, the foldable display employs a cover window made of flexible, hardened plastic. Samsung says that it successfully reduced the thickness by more than 50 percent by taking advantage of materials that enable ultra‐thin layers. Furthermore, the stress of various layers (including the TFT, light‐emitting layers, polarizing plate, and cover window) is appropriately dispersed, allowing the product to pass a strict bending test more than 200,000 cycles.
To be sure, although requirements for each country"s automotive testing body slightly differ, interior dashboard designs must pass similar requirements around the globe as part of headform impact tests (HIT). HIT simulates a driver"s or passenger"s head hitting the dashboard after being propelled forward during a car accident. Because success is measured by the type of breakage in the dashboard, material choices and display cover choices are crucial. With those challenges in mind, Corning introduced its auto interior glass solutions AutoGrade™ Corning Gorilla Glass (Fig . 4) in January 2019.
According to Corning, AutoGrade™ Gorilla Glass can help enable a variety of in‐vehicle display designs while eliminating the need for plastic antisplinter films. Moreover, it"s designed to help display modules pass industry reliability tests. And with automotive designers extending displays across dashboards in new sizes and curved configurations, Corning is able to transfer the benefits from AutoGrade glass to curved display areas using its proprietary Corning ColdForm™ Technology.
As displays move beyond simple infotainment purposes and become tools vital for assessing critical driving information, the need for high‐tech glass is clear, says Corning. AutoGrade™ Gorilla Glass can help enable automotive displays that are larger, longer, and shaped to bring next‐generation capabilities on the road and, ultimately, help the industry differentiate with curved console designs.
Nonvibrating surface haptic technology introduces new options for automotive manufacturers to reimagine the vehicle"s interior design and feel. Car manufacturers can create a uniform or harmonious touch experience across multiple surfaces—not just the display screen, but also the steering wheel, exterior door handle, and even upholstery. According to Tanvas, automotive manufacturers can implement its technology with a combination of a proprietary controller solution (which performs multitouch sensing and haptic control), supplied in various forms (including as an IC or as a module), and transform the multitouch sensor panel to a combined multitouch and haptic actuator for any surface.
Although quantum dot (QD) technology realizes a high color gamut for LCD, most QD materials are cadmium (Cd)‐based, raising concerns about their potential toxicity: Exposure to cadmium has been connected to cancer and other serious health issues, as well as environmental harms. As a result, Cd‐based QD materials are not widely accepted in the display market, and the industry has shifted its focus to finding nontoxic alternatives. Still, Cd‐free QD materials can bring their own challenges, including issues with low luminance and color purity.
Because one of Toray"s core offerings is organic emitting materials with high color purity for organic EL devices, the company wondered if they might be useful for a high color gamut LCD and began developing the SCO sheet (Fig . 6). In the beginning, the biggest issue with the organic emitting materials was their lifetime. However, Toray ultimately achieved a lifetime 1,400 times longer compared to the initial development stage.
According to the company, their SCO sheet is especially innovative for a few reasons. First, the high color purity of Toray"s organic emitting material is based on a full width at half maximum (FWHM) parameter that"s much narrower than any other organic emitting materials so far developed. So by using the SCO sheet, a high color gamut LCD can be realized. In particular, the sheet can cover both Digital Cinema Initiatives (DCI)‐P3 and Adobe specifications.
Second, Toray says its original organic emitting material has a higher quantum efficiency than that of non‐Cd QDs. Therefore, an approximately 10 percent higher luminance can be realized with the sheet than with non‐Cd QDs. For that reason, the SCO sheet can contribute to lower power consumption of the LCD panel.
Because Toray"s SCO sheet is free of toxic elements, it"s not restricted by various environmental regulations, including the European Unions’ Restriction of Hazardous Substances (RoHS) Directive. Finally, with the sheet, more than 99 percent of DCI and more than 99 percent of Adobe coverage can be achieved in one LCD panel. (According to the company, non‐Cd QDs can"t say the same.) Recently, in the PC monitor market, there has been a strong demand for compatibility of DCI and Adobe in one PC monitor. Toray believes that with the SCO sheet, it will be able to develop a new PC monitor market.
Although OLED is a well‐known way to apply organic electronics materials to the display industry, this is the first instance of applying organic emitting materials to the LCD industry, an achievement that expands the possibilities of organic electronics materials.
What"s the common thread between virtual mirrors and Audi"s electric ambitions? With its aerodynamic design, the virtual side mirror reduces wind noise. That"s a plus for electric cars, which are already noticeably quieter than combustion cars because they don"t have engines. What"s more, the mirror reduces drag, giving the vehicle a few miles more range.
A 7‐inch OLED was selected for the virtual exterior mirror. In early test drives, Senner notes, Audi realized that the limited contrast of an LCD and especially the slow response time in low temperatures was a significant issue. “So it became clear very early, that we have to use an OLED display for this application, because with the dark black and the temperature, independent fast switching‐time OLED is the best solution,” he says.
The camera is integrated into the hexagonal end of the virtual mirror"s flat supports and its images are digitally processed and displayed on high‐contrast, 1,280 × 800‐pixel OLED displays in the transition between the instrument panel and door.
Shopping for a new TV is like wading through a never-ending pool of tech jargon, display terminology, and head-spinning acronyms. It was one thing when 4K resolution landed in the homes of consumers, with TV brands touting the new UHD viewing spec as a major marketing grab. But over the last several years, the plot has only continued to thicken when it comes to three- and four-letter acronyms with the introduction of state-of-the-art lighting and screen technology. But between OLEDs, QLEDs, mini-LEDs, and now QD-OLEDs, there’s one battle of words that rests at the core of TV vocabulary: LED versus LCD.
Despite having a different acronym, LED TV is just a specific type of LCD TV, which uses a liquid crystal display (LCD) panel to control where light is displayed on your screen. These panels are typically composed of two sheets of polarizing material with a liquid crystal solution between them. When an electric current passes through the liquid, it causes the crystals to align, so that light can (or can’t) pass through. Think of it as a shutter, either allowing light to pass through or blocking it out.
Since both LED and LCD TVs are based around LCD technology, the question remains: what is the difference? Actually, it’s about what the difference was. Older LCD TVs used cold cathode fluorescent lamps (CCFLs) to provide lighting, whereas LED LCD TVs used an array of smaller, more efficient light-emitting diodes (LEDs) to illuminate the screen.
Since the technology is better, all LCD TVs now use LED lights and are colloquially considered LED TVs. For those interested, we’ll go deeper into backlighting below, or you can move onto the Local Dimming section.
Three basic illumination forms have been used in LCD TVs: CCFL backlighting, full-array LED backlighting, and LED edge lighting. Each of these illumination technologies is different from one another in important ways. Let’s dig into each.
CCFL backlighting is an older, now-abandoned form of display technology in which a series of cold cathode lamps sit across the inside of the TV behind the LCD. The lights illuminate the crystals fairly evenly, which means all regions of the picture will have similar brightness levels. This affects some aspects of picture quality, which we discuss in more detail below. Since CCFLs are larger than LED arrays, CCFL-based LCD TVs are thicker than LED-backlit LCD TVs.
Full-array backlighting swaps the outdated CCFLs for an array of LEDs spanning the back of the screen, comprising zones of LEDs that can be lit or dimmed in a process called local dimming. TVs using full-array LED backlighting to make up a healthy chunk of the high-end LED TV market, and with good reason — with more precise and even illumination, they can create better picture quality than CCFL LCD TVs were ever able to achieve, with better energy efficiency to boot.
Another form of LCD screen illumination is LED edge lighting. As the name implies, edge-lit TVs have LEDs along the edges of a screen. There are a few different configurations, including LEDs along just the bottom, LEDs on the top and bottom, LEDs left and right, and LEDs along all four edges. These different configurations result in picture quality differences, but the overall brightness capabilities still exceed what CCFL LCD TVs could achieve. While there are some drawbacks to edge lighting compared to full-array or direct backlight displays, the upshot is edge lighting that allows manufacturers to make thinner TVs that cost less to manufacture.
To better close the local-dimming quality gap between edge-lit TVs and full-array back-lit TVs, manufacturers like Sony and Samsung developed their own advanced edge lighting forms. Sony’s technology is known as “Slim Backlight Master Drive,” while Samsung has “Infinite Array” employed in its line of QLED TVs. These keep the slim form factor achievable through edge-lit design and local dimming quality more on par with full-array backlighting.
Local dimming is a feature of LED LCD TVs wherein the LED light source behind the LCD is dimmed and illuminated to match what the picture demands. LCDs can’t completely prevent light from passing through, even during dark scenes, so dimming the light source itself aids in creating deeper blacks and more impressive contrast in the picture. This is accomplished by selectively dimming the LEDs when that particular part of the picture — or region — is intended to be dark.
Local dimming helps LED/LCD TVs more closely match the quality of modern OLED displays, which feature better contrast levels by their nature — something CCFL LCD TVs couldn’t do. The quality of local dimming varies depending on which type of backlighting your LCD uses, how many individual zones of backlighting are employed, and the quality of the processing. Here’s an overview of how effective local dimming is on each type of LCD TV.
TVs with full-array backlighting have the most accurate local dimming and therefore tend to offer the best contrast. Since an array of LEDs spans the entire back of the LCD screen, regions can generally be dimmed with more finesse than on edge-lit TVs, and brightness tends to be uniform across the entire screen. Hisense’s impressive U7G TVs are great examples of relatively affordable models that use multiple-zone, full-array backlighting with local dimming.
Because edge lighting employs LEDs positioned on the edge or edges of the screen to project light across the back of the LCD screen, as opposed to coming from directly behind it, it can result in very subtle blocks or bands of lighter pixels within or around areas that should be dark. The local dimming of edge-lit TVs can sometimes result in some murkiness in dark areas compared with full-array LED TVs. It should also be noted that not all LED edge-lit TVs offer local dimming, which is why it is not uncommon to see glowing strips of light at the edges of a TV and less brightness toward the center of the screen.
Since CCFL backlit TVs do not use LEDs, models with this lighting style do not have dimming abilities. Instead, the LCD panel of CCFL LCDs is constantly and evenly illuminated, making a noticeable difference in picture quality compared to LED LCDs. This is especially noticeable in scenes with high contrast, as the dark portions of the picture may appear too bright or washed out. When watching in a well-lit room, it’s easier to ignore or miss the difference, but in a dark room, it will be, well, glaring.
An OLED display uses a panel of pixel-sized organic compounds that respond to electricity. Since each tiny pixel (millions of which are present in modern displays) can be turned on or off individually, OLED displays are called “emissive” displays (meaning they require no backlight). They offer incredibly deep contrast ratios and better per-pixel accuracy than any other display type on the market.
Because they don’t require a separate light source, OLED displays are also amazingly thin — often just a few millimeters. OLED panels are often found on high-end TVs in place of LED/LCD technology, but that doesn’t mean that LED/LCDs aren’t without their own premium technology.
QLED is a premium tier of LED/LCD TVs from Samsung. Unlike OLED displays, QLED is not a so-called emissive display technology (lights still illuminate QLED pixels from behind). However, QLED TVs feature an updated illumination technology over regular LED LCDs in the form of Quantum Dot material (hence the “Q” in QLED), which raises overall efficiency and brightness. This translates to better, brighter grayscale and color and enhances HDR (High Dynamic Range) abilities.
And now to make things extra confusing, part of Samsung’s 2022 TV lineup is being billed as traditional OLEDs, although a deeper dive will reveal this is actually the company’s first foray into a new panel technology altogether called QD-OLED.
Shopping for a new TV sounds like it could be fun and exciting — the prospect of a gleaming new panel adorning your living room wall is enough to give you goosebumps. But with all the brands to choose from, and different smart capabilities (we can explain what a smart TV is) to weigh, as well as the latest picture tech to consider, it can be daunting. Is this article, we compare OLED vs. LED technology to see which is better for today’s modern TVs. Once you determine which panel type is best for you, make sure you check out our list of the best TVs to get our editor’s recommendations.
Non-OLED TVs are made of two main parts: An LCD panel and a backlight. The LCD panel contains the pixels, the little colored dots that make up a TV’s image. On their own, pixels cannot be seen; they require a backlight. When light from the backlight shines through an LCD pixel, you can see its color.
The “LED” in LED TV simply refers to how the backlight is made. In the past, a thicker and less-efficient technology called CCFL (cold-cathode fluorescent light) was used. But these days, virtually every flat-screen TV uses LEDs as its source of backlighting. Thus, when you see the term “LED TV,” it simply refers to an LED-backlit LCD TV.
Currently, LG Display is the only manufacturer of OLED panels for TVs, famed for top-line models like the CX. Sony and LG have an agreement that allows Sony to put LG OLED panels into Sony televisions — like the bright X95OH — but otherwise, you won’t find OLED in many other TV displays sold in the U.S.
The differences in performance between LG’s OLED TVs and Sony’s result from different picture processors at work. Sony and LG have impressive processors that are also unique to each brand, which is why two TVs with the same panel can look drastically different. A good processor can greatly reduce issues like banding and artifacting and produce more accurate colors as well.
Other brands that source panels from LG include Philips, Panasonic, HiSense, Bang & Olufsen, and more. You’ll also see lesser-known brands sparingly, but for now, they’re all getting their panels from the same source.
Samsung does make OLED smartphone panels, and the company recently announced it would start building new TV panels based on a hybrid of QLED and OLED known as QD-OLED, but it will be a few more years before we see the first TVs that use this technology.
Despite the name, microLED has more in common with OLED than LED. Created and championed by Samsung, this technology creates super-tiny, modular LED panels that combine light emission and color like OLED screens do, minus the “organic” part. For now, the technology is primarily being used for extra-large wall TVs, where colors, blacks, and off-angle viewing are excellent but with more potential for greater brightness and durability than OLED TVs.
LED TVs rely on LED backlights shining behind an LCD panel. Even with advanced dimming technology, which selectively dims LEDs that don’t need to be on at full blast, LED TVs have historically struggled to produce dark blacks and can suffer from an effect called “light bleed,” where lighter sections of the screen create a haze or bloom in adjacent darker areas.
Because OLED pixels combine the light source and the color in a single diode, they can change states incredibly fast. By contrast, LED TVs use LEDs to produce brightness and tiny LCD “shutters” to create color. While the LED’s brightness can be changed in an instant, LCD shutters are by their nature slower to respond to state changes.
OLED, again, is the winner here. With LED TVs, the best viewing angle is dead center, and the picture quality diminishes in both color and contrast the further you move to either side. While the severity differs between models, it’s always noticeable. For its LED TVs, LG uses a type of LCD panel known as IPS, which has slightly better off-angle performance than VA-type LCD panels (which Sony uses), but it suffers in the black-level department in contrast to rival VA panels, and it’s no competition for OLED. Samsung’s priciest QLED TVs feature updated panel design and anti-reflective coating, which make off-angle viewing much less of an issue. While OLED still beats these models out in the end, the gap is closing quickly.
OLEDs have come a long way in this category. When the tech was still nascent, OLED screens were often dwarfed by LED/LCD displays. As OLED manufacturing has improved, the number of respectably large OLED displays has increased — now pushing 88 inches — but they’re still dwarfed by the largest LED TVs, which can easily hit 100 inches in size, and with new technologies, well beyond.
Can one kind of TV be healthier for you than another? If you believe that we need to be careful about our exposure to blue light, especially toward the evening, then the answer could be yes. Both OLED and LED TVs produce blue light, but OLED TVs produce considerably less of it. LG claims its OLED panels only generate 34% blue light versus LED TV’s 64%. That stat has been independently verified, and LG’s OLED panels have been given an Eye Comfort Display certification by TUV Rheinland, a standards organization based out of Germany.
OLED panels require no backlight, and each individual pixel is extremely energy-efficient. LED TVs need a backlight to produce brightness. Since LEDs are less energy-efficient than OLEDs, and their light must pass through the LCD shutters before it reaches your eyes, these panels must consume more power for the same level of brightness.
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There’s a variety of display panel out there and even more on the way. But looking at all the different types of panels can be baffling. They come in various acronyms, and many of those acronyms are confusingly similar. How do LCD, LED and OLED compare? What about the different types of LCD panels? And how do these different technologies impact your viewing experience for things like gaming? To help, we’ve created this guide so you can gain a firm understanding of today’s display panel technology and which features really matter.
The first type of panels we’ll cover are LCD (liquid crystal display) panels. The main thing to understand about LCD panels is that they all use a white backlight (or sidelight, etc.). They work by shining a bright white light into your eyes, while the rest of the panel is for changing this backlight into individual pixels.
LED stands for light-emitting diode. You’ll often see LCD panels that are LED, but that doesn’t necessarily mean much when choosing an LCD. LED is just a different type of backlight compared to the old cold cathode backlights. While you could congratulate yourself on not using mercury, which is found in cathodes, at this point all LCDs use LED backlights anyway.
The second thing to understand is that LCDs take advantage of a phenomena known as polarization. Polarization is the direction in which the light wave is oscillating, or swinging back and forth at the same speed. Light comes out of the backlight unpolarized. It then passes through one polarizer, which makes all the light oscillate the same way.
Now you have an on and off (and between) switch for light. To produce color all that’s needed is three color filters, red, green and blue, that block all light other than that color from coming through. The difference between different types of LCD panels is mostly in how this in-between liquid crystal part works.
This design allows for fast response times (the time between the panel getting the frame it’s supposed to display and actually displaying it). It also allows for fast refresh rates. Consequently, TN panels are the only 240 hertz (Hz) gaming monitors available right now.
TN panels are cheap but suffer from poor viewing angles due to the “twist” only being aligned in one direction for viewing the panel straight on. They can also have poor color and contrast due to this twist mechanism not being the most precise or accurate.
VA stands for vertical alignment, again referring to the crystal alignment. These came about in the 1990s. Instead of using liquid crystals to twist a light’s polarization, a VA panel’s liquid crystals are aligned either perpendicular (vertical to) or parallel (horizontal to) the two polarizers. In the off state, the crystals are perpendicular to the two opposing polarizers. In the on state, the crystals begin to align horizontally, changing the polarization to match the second polarizer and allowing the light to go through the crystals.
This structure produces deeper blacks and better colors than TN panels. And multiple crystal alignments (shifted a bit off axis from each other) can allow for better viewing angles compared to TN panels.
However, VA panels come with a tradeoff, as they are often more expensive than TN panels and tend to have lower refresh rates and slower response times than TN panels. Consequently, you won’t see quite as many VA panel gaming monitors.
IPS stands for in-plane switching. These panels debuted after TN panels in the mid-1990s. The crystals are always horizontal to the two polarizers and twist 90° horizontally to go from off to on. Part of this design requires the two electrodes (which apply current to the liquid crystal to change its state) to be on the same glass substrate, instead of aligned with each other on the sandwiching glass substrates above and below the crystal (as in other types of LCDs). This, in turn, blocks a bit more light than both TN and VA panels.
IPS panels have the best viewing angles and colors of any LCD monitor type, thanks to its crystal alignment always lining up with the viewer. And while they don’t offer as fast a response time or refresh rate as TN panels, clever engineering has still gotten them to 144hz, and with nice viewing angles you’re not necessarily going wrong with an IPS gaming panel.
How do LCD panels go about reaching HDR brightness when incorrect polarization and color filters block so much light?The answer is quantum dots. These clever little things are molecules that absorb light and then re-emit that light in the color you engineered them to.
Today’s quantum dot layers usually go between a blue backlight and the polarization step, and are often used to produce red and green that more closely matches the color filters, so more light passes through them. This allows more of the backlight to come through instead of being blocked by the color filters, it can also reduce crosstalk, or colors slipping through the wrong subpixel, ensuring better colors of LCDs.
Other uses of quantum dots are being tried, however. One promising one is using QD molecules to replace the color filters entirely, allowing even more light through. Because LCD backlights produce more light than OLED panels (more on those below), this would allow LCDs to become the brightest displays around.
Motion blur/ghosting can be a result of how long an image takes to switch from one to another and how long an image is displayed on screen (persistence). But both of these phenomena differ greatly between individual LCD panels regardless of underlying LCD tech. And both are often better controlled by higher refresh rates, rather than clever panel engineering, at least for LCD displays.
Choosing an LCD panel based on underlying LCD tech should be more about cost vs desired contrast, viewing angles and color reproduction than expected blur, or other gaming attributes. Maximum refresh rate and response time should be listed in any respectable panel’s specs. Other gaming tech, such as strobe, which flashes the backlight on and off quickly to reduce persistence, may not be listed at all and is not part of the underlying type of LCD used. For that kind of info you’ll have to check the detailed reviews here on our site.
OLED, or organic light emitting diode, panels, are different from LCDs. There are no polarization tricks here. Instead, each pixel (or subpixel of red, green, or blue) lights itself up as a voltage is applied to a giant complex molecule called, yep, an organic light emitting diode. The color emitted is dependent on the molecule in question, and brightness is dependent on the voltage applied. OLEDs can reach HDR brightness because their molecules put out the right colors to begin with without being blocked.
Due to its approach to color and brightness, OLEDs have great contrast ratios. There’s no need to block a backlight, so there’s no worries about light bleeding through. Blacks are very black, and colors look great. OLEDs can also strobe, or flash off and on quickly to lower persistence. They can also use a trick called rolling scan.This turns blocks of the screen on and off one at a time, from top to bottom in a roll. This is all done as the image is sent to the screen, which cuts down on persistence blur a lot. This is why every major VR headset that can afford it uses OLED panels today.
Unfortunately, that’s where the advantages of OLED end. Refresh rates of OLED panels have never surpassed about 90Hz. And they’re quite expensive. A large part of that $1,000 iPhone X price is due to its OLED display. The current molecules used in OLEDs also degrade relatively quickly over time, especially those used for the color blue(opens in new tab), making the screen less and less bright.
OLEDs were also supposed to use less power than LCDs, but newer, giant OLED molecules that take less voltage to turn on have yet to appear. And while molecules covering the colors of the P3 HDR gamut are out today, those covering the larger BT.2020 gamut have yet to be found commercially. So OLEDs, while once promising and seemingly the future, have yet to live up to that promise.
A relevant question: If our fastest gaming displays are 240Hz TN panels now, just how fast do we need to go anyway? Well, a 2015 study places maximum human perception at 500Hz. So from that perspective, we’re halfway there. But that’s halfway there with today’s HDR, and not in lightfield 3D, or other possible advancements. And mobile devices could always use displays that take up less power.
In other words, in order to get fancy 3D effects, or much higher brightness, or any other desirable features, a different, new type of panel may be required. MicroLED tech is one such technology; think of it as OLED without the organic part and with the potential to improve contrast, response times and energy usage over standard LED panels. If you want to know more you can go here, but the real takeaway is that MicroLEDs work almost exactly like OLEDs.
Two types of products dominate the digital car-top advertising market. On one end is an LCD based display panel that offers high-resolution, but it is expensive, power-hungry, and bulky. On the other spectrum is a LED-based display that is light-weight and affordable. The drawback is that the low-resolution screen is unable to render color and continuous tone accurately, making it undesirable to display digital advertising for brands. Moment Solutions, a leading cloud-based products manufacturer, see an opportunity to offer a compact size display unit that uses high-resolution LCDs while keeping the cost in check. They collaborate with Bluemap design for the design challenge.
The industrial design team of Bluemap Design works closely with Moment"s electronic hardware development team to create the M17 digital car top advertising display. We re-configured the components and design an advanced cooling system to achieve a super slim body that is half the thickness of the competitive unit. It also reduces weight by more than 50%. The all-aluminum construction is light-weight yet provides a durable enclosure that suitable for the harshest urban driving environment. The two medallion endcaps are cut in an angle not only for the unique look but also as an air intake to cool the unit. We take into consideration of how the unit is serviced in the field in mind. The technician can easily swap the LCD screen module with the quick release mechanism for serving in less than 10 minutes. The unit is mounted on the car with a set of robust roof racks. The overall design approach is simple. We want to create a clean design look that doesn"t compete with the digital advertising itself. We combine simplicity and utility in one design.