rgbw lcd panel brands

The 0 to 100% dimmable Dyno 1200C RGBW Panel from Nanlux measures 40 x 36 x 7″ and has a wide beam spread that makes it a great choice for all-around use. The panel has an expansive color temperature range of 2700 to 20,000K to meet ambient light challenges, match other fixtures, or just for creative expression. The 1200C’s high CRI of 98 indicates superior accuracy in the rendering of color.

For those who require the ultimate in color control the panel has an RGB mode that gives you access to literally millions of colors. Another bonus is the 1200C’s 15 lighting effects including Hue Loop, CCT Loop, INT Loop, Flash, Pulse, Storm, Police Car, TV, Paparazzi, Candle/Fire, Disco, Bad Bulb, Fireworks, Explosion, and Welding. The Dyno 1200C is ready for worldwide use thanks to its 100 to 240V power supply.

Although LG garnered a lot of attention at the recent CES 2017 for its new 4K Ultra HD LED LCD TVs using Nano Cell technology, lost in the marketing buzz was the fact that the majority of LG Electronics’ lower-cost 2017 4K Ultra HD LED LCD TVs now use the company’s controversial RGBW technology that arrived to much debate two years ago.

Tim Alessi, LG Electronics home entertainment marketing director, told HD Guru prior to the show that RGBW panels will be used this year in all but two series of 4K Ultra HD LED LCD TVs, encompassing 14 core-line models.

LG has yet to announce model pricing for the 2017 TV lines, so we can’t point out specific price savings the use of RGBW will bring this year, though its use last year resulted in more affordable entry to mid-range 4K UHD price points in LG’s assortment.

The 2017 4K Ultra HD LED LCD TV series using RGBW panels include: the UJ6300, UJ6500, UJ7700 and SJ8000. The SJ8000 is part of LG’s premium Super UHD LED LCD assortment offering its advanced new Nano Cell LED LCD technology.

The distinction is made here because the RGBW technology’s purported benefits and shortcomings have been hotly debated, primarily between LG and rival Samsung. Importantly, LG Electronics has elected over the last two years not to formally identify in literature, packaging or signage which of its LED LCD TV models use RGBW panels. However, the company generally identifies panels using In-Plane Switching (IPS) panels and other technologies.

LG uses two different forms of RGBW technology that are quite different in implementation and performance. One is used in its top-end 4K OLED TVs and the other is used for lower-tier 4K LED LCD TVs, primarily as a cost-savings measure. In the OLED approach, each pixel includes a white sub-pixel in addition to red, green, and blue, sub-pixel, to produce brighter images (used for HDR among other things). In the LCD approach, RGBW panels use a complex scheme where every fourth sub-pixel in a row is white, requiring each white sub-pixel to be shared by adjacent pixels.

Critics of the LCD approach to RGBW say the unusual sub-pixel arrangement prevents the panels from achieving full UHD color resolution, and therefore the displays do not meet the Consumer Technology Association’s (CTA) definition of a 4K Ultra HDTV – this requires 3840×2160 active pixels with 8-bit color (each pixel needing to carry a separate R, G and B subpixel across the screen). But LG has countered that its RGBW displays achieve full UHD monochromatic resolution and full resolution on the luma (brightness) channel, which is all that some other international standards organizations require for a 4K UHD designation.

Note: LG Display, which manufactures the LCD panels with RGBW technology for LG Electronics, is one of the world’s largest suppliers of LCD TV panels. It sells RGBW panels to other television manufacturers and brands. So far, none of those panel customers have called out the use of RGBW panels in their 4K Ultra HDTVs in 2016, and most have refused to disclose whether they use RGBW panels or not.

Even Samsung, which was originally the most vocal critic of RGBW technology, would not comment to us on whether or not any of the LCD panels it is reportedly starting to acquire from rival LG Display this year will be of the RGBW variety. A Samsung spokesman pointed to a long-standing company policy not to comment on issues involving component supply.

According to a Bloomberg report this week, Samsung, hampered by a global panel supply shortage, had to turn to LG Display for LCD panels this year after one of its auxiliary sources – Sakai Display (Foxconn/Sharp)–decided to stop selling Samsung LCD panels from its factories.

To its credit, LG has always fully disclosed the use of RGBW panels in its model lines when specifically asked. It has also proudly called out the technology’s various benefits including lower cost, energy savings or higher brightness (depending on the application), among others.

Critics of LG’s RGBW for LCD panels say the shared white sub-pixel scheme limits the rendering of fine text, and makes the image somewhat fuzzier when trying to read Web pages or documents delivered by a connected PC. LG denies this. Critics have also said that under some conditions, RGBW images produce lower color volume, particularly in reds, that can appear to lose saturation with higher brightness compared to pixels with full RGB sub-pixels.

Flat-panel displays are thin panels of glass or plastic used for electronically displaying text, images, or video. Liquid crystal displays (LCD), OLED (organic light emitting diode) and microLED displays are not quite the same; since LCD uses a liquid crystal that reacts to an electric current blocking light or allowing it to pass through the panel, whereas OLED/microLED displays consist of electroluminescent organic/inorganic materials that generate light when a current is passed through the material. LCD, OLED and microLED displays are driven using LTPS, IGZO, LTPO, and A-Si TFT transistor technologies as their backplane using ITO to supply current to the transistors and in turn to the liquid crystal or electroluminescent material. Segment and passive OLED and LCD displays do not use a backplane but use indium tin oxide (ITO), a transparent conductive material, to pass current to the electroluminescent material or liquid crystal. In LCDs, there is an even layer of liquid crystal throughout the panel whereas an OLED display has the electroluminescent material only where it is meant to light up. OLEDs, LCDs and microLEDs can be made flexible and transparent, but LCDs require a backlight because they cannot emit light on their own like OLEDs and microLEDs.

Liquid-crystal display (or LCD) is a thin, flat panel used for electronically displaying information such as text, images, and moving pictures. They are usually made of glass but they can also be made out of plastic. Some manufacturers make transparent LCD panels and special sequential color segment LCDs that have higher than usual refresh rates and an RGB backlight. The backlight is synchronized with the display so that the colors will show up as needed. The list of LCD manufacturers:

Organic light emitting diode (or OLED displays) is a thin, flat panel made of glass or plastic used for electronically displaying information such as text, images, and moving pictures. OLED panels can also take the shape of a light panel, where red, green and blue light emitting materials are stacked to create a white light panel. OLED displays can also be made transparent and/or flexible and these transparent panels are available on the market and are widely used in smartphones with under-display optical fingerprint sensors. LCD and OLED displays are available in different shapes, the most prominent of which is a circular display, which is used in smartwatches. The list of OLED display manufacturers:

MicroLED displays is an emerging flat-panel display technology consisting of arrays of microscopic LEDs forming the individual pixel elements. Like OLED, microLED offers infinite contrast ratio, but unlike OLED, microLED is immune to screen burn-in, and consumes less power while having higher light output, as it uses LEDs instead of organic electroluminescent materials, The list of MicroLED display manufacturers:

LCDs are made in a glass substrate. For OLED, the substrate can also be plastic. The size of the substrates are specified in generations, with each generation using a larger substrate. For example, a 4th generation substrate is larger in size than a 3rd generation substrate. A larger substrate allows for more panels to be cut from a single substrate, or for larger panels to be made, akin to increasing wafer sizes in the semiconductor industry.

"Samsung Display has halted local Gen-8 LCD lines: sources". THE ELEC, Korea Electronics Industry Media. August 16, 2019. Archived from the original on April 3, 2020. Retrieved December 18, 2019.

"TCL to Build World"s Largest Gen 11 LCD Panel Factory". www.businesswire.com. May 19, 2016. Archived from the original on April 2, 2018. Retrieved April 1, 2018.

"Panel Manufacturers Start to Operate Their New 8th Generation LCD Lines". 대한민국 IT포털의 중심! 이티뉴스. June 19, 2017. Archived from the original on June 30, 2019. Retrieved June 30, 2019.

"TCL"s Panel Manufacturer CSOT Commences Production of High Generation Panel Modules". www.businesswire.com. June 14, 2018. Archived from the original on June 30, 2019. Retrieved June 30, 2019.

"Samsung Display Considering Halting Some LCD Production Lines". 비즈니스코리아 - BusinessKorea. August 16, 2019. Archived from the original on April 5, 2020. Retrieved December 19, 2019.

Herald, The Korea (July 6, 2016). "Samsung Display accelerates transition from LCD to OLED". www.koreaherald.com. Archived from the original on April 1, 2018. Retrieved April 1, 2018.

"China"s BOE to have world"s largest TFT-LCD+AMOLED capacity in 2019". ihsmarkit.com. 2017-03-22. Archived from the original on 2019-08-16. Retrieved 2019-08-17.

RGBW Addressable RibbonLyte allows you to create completely customized patterns of light that are only limited by the imagination. Each 4-in. pixel can be individually controlled. Pair RGBW Addressable RibbonLyte with simple DMX control systems to program moving effects, patterns, chases and more to create an unforgettable light display.

The expectation is that Honor will launch its next giant phone (let’s stop calling them Phablets, good?) Nicknamed Honor X10 Max on July 2nd. But, even though the date is still relatively distant, we know almost everything about this device, thanks to a series of leaks in the past few days. In addition, the brand itself has also begun to officially reveal some specifications on the Chinese social network Weibo. Today, it revealed that this device will feature an RGBW LCD panel.

LCD panels with RGB pixel arrangement (red, blue, green) produce white color, illuminating the pixels of the color mentioned above at their highest intensity. But part of the light is weakened due to the color filters.

On the other hand, RGBW LCD panels have a dedicated white sub-pixel. Thus, the overall brightness produced by these screens is better than the conventional RGB screens found on most smartphones.

The brand even displayed the brightness capabilities of the Honor X10 Max’s screen in a video. This particular video was filmed on Midsummer’s Day (June 21), when sunlight directly hit the Tropic of Cancer.The Honor X10 Max will have RGBW LCD panel for better brightness

If you never watched anything but 720p and 1080p content, something that still applies to a great number of people, you would probably never notice that your new 2017 LG UJ6300, UJ6500, UJ7700, or SJ8000 LCD TV does things a little differently. Note those are models reported by HDGuru—I’ve witnessed only the UJ6300 and UJ6500.

Most 4K UHD TVs have 3840 pixels per row, each having the standard three RGB subpixels for a total of 11,520 of these smallest elements. But with some implementations, that can leave something to be desired in the way of brightness and contrast. To increase brightness, some panel manufacturers add fourth white subpixel: RGBW (red, green, blue, white).

LG’s OLEDs are pricey, but fantastic and really 4K UHD thanks to using an additive form of RGBW. Some LG LCD TVs use subtractive RGBW and are not true 4K.

Done the way LG does with its RGBW LCD TVs, there are still only 11,520 subpixels, as with RGB, but every fourth subpixel is changed to white.This results in only 2,880 distinct RGBW subpixel groups, or pixels, or possible full color points in each row. We call it subtractive RGBW. By any reasonable definition, including your eye’s when viewing 4K UHD content on such an arrangement, that’s 2.88K, or using the display industry’s loose math—2.8K.

There’s a simple test you can do with a magnifying glass to see if a TV uses subtractive RGBW. Put a white image on the screen, and simply observe if every fourth pixel is white. If they’re not groups of four, and the white changes position in the group, something like the image below, then it’s the 2.8K, subtractive version of RGBW.

If you want to learn more about RGB, RGBW, and the fuzzy logic and math involved, read our previous article on the subject. You can also view LG’s defense, and Samsung’s rather lawyerly condemnation on YouTube.

Even in an industry that rounds up 3840 pixels to 4000 pixels to market TVs as “4K,” it’s alarming that a major tech manufacturer would blur that definition even further. That manufacturer is LG Electronics, and the TVs in question are LG’s 6100-, 6500-, and 6800-series LCD models, which rolled out this year and last. These aren’t to be confused with LG’s OLED TVs, which remain among the best you can buy.

As with any other 4K TV, the panels in these LCD models have 2160 horizontal scan lines with 3840 pixels in each line. The pixels in these LG models, however, are very different from what you’ll find in competing 4K TVs—and that difference has a negative impact on image quality. It’s an issue that flies beneath most consumers’ radar because LG doesn’t disclose its departure from conventional standards in its advertising or published specifications.

A single pixel in a conventional LCD display consists of three subpixels: red, green, and blue. A white subpixel can be added to that array to increase a panel’s brightness—it’s an inexpensive way to increase a panel’s luminance, although it also affects color saturation and gamut. Still, luminance is almost as important as the number of pixels for creating a crisp, detailed image. But a bright panel in and of itself won’t deliver the best-quality picture. Read our article on high dynamic range—HDR—for more details.

Here we see the offset replacement RGBW pattern that LG uses in its budget LCD TVs.There are still 11,520 subpixels and 3840 whole pixels per line, but only 2880 of those whole pixels can produce the full range of colors (because every fourth subpixel is white).

LG’s RGBW LCD: 11,520 subpixels where only some groups have all three color elements. Every fourth red, green, or blue subpixel is replaced by a white subpixel to increase luminance. That still comes out to 3840 pixels per row, but there are only 2880 RGB groups staggered over those 3840 pixels.

LG defends the marketing of these RGBW LCD models as 4K TVs, rightly stating that they have 2160 horizontal rows with 3840 pixels consisting of three subpixels each. This forms a matrix of 8,294,400 distinct areas of luminance, and the ISO (International Standards Organization) is big on luminance, a fact that LG is quick to point out in this promotional video available on YouTube:

Where LG’s argument falls apart is in the reduced number and increased spacing of the red, green, and blue subpixels. It’s simply not possible to render details as finely with LG’s matrix—where every fourth red, green, or blue subpixel is replaced by white—as other 4K TVs can render with matrices consisting of conventional RGB (or RGBW) subpixel groupings.

LG mitigates this shortcoming somewhat by tweaking how individual subpixels are addressed and by offsetting subpixel colors by row, so that two white subpixels are never adjacent. But at the end of the day, the LG panels in question still have only 75 percent of the red, green, and blue subpixels to work with.

To empirically test whether LG’s panels fall short on 4K image quality, I gathered up my 4K (3840×2160) test files, and headed for the local big-box store. I would have loved to sit in the lab comparing TVs, but I was unable to obtain a relevant TV from LG in time. No matter, though. The results on the LG 6100-series TVs I saw were indicative of an image-quality deficiency compared to 4K UHD. In fact, they were obvious upon close inspection to both myself and everyone around me.

Why would LG take this approach to building TVs? Well, besides producing a good amount of brightness, an RGBW LCD panel is more energy-efficient than an RGB LCD panel, which must blast all three subpixels with its backlight to create white. LG’s 43-inch 43UH6100 is rated for an operating cost of $16 a month, where most LCD TVs of similar size and brightness are rated to cost $20 or more per month to operate. LG also quotes lower productions costs in the papers I’ve seen.

The subtractive/replacement RGBW used to produce LG’s 6800-, 6500,- and 6100-series TVs wouldn’t be an issue if the technology were advertised as 2.8K, or even—as the industry is wont to do—rounded up and pitched as a 3K. Failing that, consumers should be given at least a footnote in the specs. But these TVs are being sold to consumers as if they offered the same technology found in nearly every other 4K TV on the market, and they don’t.

from what I perceived it seems that G7 panel is a new tech so as follow we are having a new method of calculating resolution and that happens to be Contrast Modulation (approved by ICDM ).

the issue is that LG marketed... moreIs that so? Then LG knows they"re false marketing. A comment in this thread has already mentioned that the XZ2P Premium uses an RGBW panel. I cannot say whether the layout is RG-BW-RG or RGB-WRG. Interesting to know there are even more phones using RGBW.

The site also mentioned HDR as a valid point as to why LG had to use an RGBW panel, a good one at that. I just wished that LG had tuned the colour accuracy, it looks way too cool.

[deleted post]I find it hard to believe it would be a 2 subpixels (RG-BW-RG-BW) arrangement instead of 3 subpixels. That would make it to be worse than an RGB 1080p panel. M+ is RGBW and LG says it is used in their 4K TVs.

So it"s not wrong, it"s a marketing term made by LG. Samsung also mentions RGBW and also OLED but highlights its weaknesses to imply they have better technology.

It needs to be compared to an RGB panel and use one"s own eyes to evaluate. Text can determine the sharpness. This panel is certainly not cheap to produce when it"s a fact that it"s the brightest LCD on a phone but it"s funny how they used it on one phone only.

I see that LG G7 is using the standard RGBW pixel array which means it"s technically a 1080p panel at 423 PPI. The width of the panel is the same as a 5.2" 16:9 panel.

That"s what HDR does. It requires maximum brightness to achieve brighter highlights. With almost 1000 nits, 12 bit color depth and 2000:1 contrast ratio, LG G7 is great for watching HDR content. The contrast of LG G7 is impressive but not as good as VA panels used in TVs so the blacks will look gray. This might not be a problem in ambient light conditions but try checking it yourself.

DrakeX, 06 May 2021Nope, it was beyond my budget scope. LG G7"s MLCD+ may have higher brightness and energy ... moreyeah I saw that LG have higher pixel density PPI than samsung even with the same res and aspect ratio and phone size.

Anonymous, 05 May 2021did you try LG G7 RGBW QHD+ I believe it"s a step over old onesNope, it was beyond my budget scope. LG G7"s MLCD+ may have higher brightness and energy efficiency and support for 12-bit colour but the problem remains the same as content has always been mastered for RGB displays and sRGB color gamut, lower sharpness and saturation. LG G7"s PPI is high enough to compensate for its sharpness but I can"t say about HDR content. LG G7 colour accuracy pales in comparison to iPhones with LCD. I can say that it is the best RGBW display based on the features it has.

I checked on multiple sources to reassure my statements so this isn"t something I made entirely. I just pass on knowledge. You can google on "pentile OLED true res" and "faux 4k rgbw". Calculating PPI density refers to area not distance which is why calculating pentile OLED structure is different than normal RGB.

This technical knowledge needs to be proven in real life usage or rather anecdotal so with the past use of an RGBW and OLED phone, it does hold some merit. Do note that not everyone can notice pixelation which is why some people are satisfied with 720p and 60Hz. Also to add on from my previous OLED statement, I had a Mi 9T and the PPI was 403 but actually 329, it still looked plenty sharp. OLED iPhones used an odd resolution to compensate this problem so they DO know about OLED"s issue and I always thought it was Apple being weird.

DrakeX, 24 Jun 2020Pentile RGBW is worse than pentile RGBG since the white subpixel replaces every fourth subpixe... moreThank you for this amazing breakdown,love technical stuff like this

IpsDisplay, 23 Jun 2020I didn"t realize RGBW contributed to resolution loss similar to pentile OLED, i"ve learned som... morePentile RGBW is worse than pentile RGBG since the white subpixel replaces every fourth subpixel (RGB-WRG-BWR-GBW) leading to -25% loss based on 9/12 subpixels. However, Mate 10"s arrangement is a bit different, it goes like this: (RGB-RGW-RGB-RGW) which is 10/12 subpixels, a -16.67% loss. Strangely enough, it looked worse than a normal FHD RGB IPS panel to my eyes even though it"s 5.9" 2133*1200 (415 ppi from 498). This same arrangement was also used in Mate 20 with an effective resolution at 6.53" 1870*900 (318 ppi from 381). If we apply it on X10 Max, it"s 7.09" 1900*900 (297 ppi from 355). That looks uninspiring.

WhySoSeri0us, 23 Jun 2020The high-end Honor Note series where great. Now they make big mid-rage phones with LCD screen ... moreBut honor was dominated by LCD screen as usual ...

DrakeX, 23 Jun 2020IPS RGB panels nowadays have decent sunlight legibility although not as good as AMOLED. iPhone... moreI didn"t realize RGBW contributed to resolution loss similar to pentile OLED, i"ve learned something today