tft lcd pixel size brands

Focus Displays offers a wide range of standard full color TFT displays. 64 million unique colors, high brightness, sharp contrast, -30C operating temperature, and fast response time are all good descriptions of a TFT display. This is why TFT technology is one of the most popular choices for a new product.

Thin Film Transistor (TFT) display technology can be seen in products such as laptop computers, cell phones, tablets, digital cameras, and many other products that require color. TFT’s are active matrix displays which offers exceptional viewing experiences especially when compared to other passive matrix technologies. The clarity on TFT displays is outstanding; and they possess a longer half-life than some types of OLEDs and range in sizes from less than an inch to over 15 inches.

CCFL’s are still available, but are becoming a legacy (obsolete) component. TFT displays equipped with a CCFL require higher MOQs (Minimum Order Quantities) than displays with LED backlights.

The majority of TFT displays contain a touch panel, or touch screen. The touch panel is a touch-sensitive transparent overlay mounted on the front of the display glass. Allowing for interaction between the user and the LCD display.

Some touch panels require an independent driver IC; which can be included in the TFT display module or placed on the customer’s Printed Circuit Board (PCB). Touch screens make use of coordinate systems to locate where the user touched the screen.

Resistive touch panels are the lowest cost option and are standard equipment on many TFT modules. They are more common on smaller TFT displays, but can still be incorporated on larger modules.

Contrast ratio, or static contrast ratio, is one way to measure the sharpness of the TFT LCD display. This ratio is the difference between the darkest black and the brightest white the display is able to produce. The higher the number on the left, the sharper the image. A typical contrast ratio for TFT may be 300:1. This number ratio means that the white is 300 times brighter than the black.

TFT LCD displays are measured in inches; this is the measurement of the diagonal distance across the glass. Common TFT sizes include: 1.77”, 2.4”, 2.8”, 3”, 4.3”, 5”, 5.7”, 5.8”, 7”, 10.2”, 12.1 and 15”.

As a general rule, the larger the size of the glass the higher the cost of the display, but there are exceptions to this rule. A larger display may be less expensive than a smaller display if the manufacture produces higher quantities of the larger displays. When selecting your color display, be sure to ask what the cost is for one size smaller and one size larger. It may be worth modifying your design requirements.

TFT resolution is the number of dots or pixels the display contains. It is measured by the number of dots along the horizontal (X axis) and the dots along the vertical (Y axis).

Certain combinations of width and height are standardized and typically given a name and a letter representation that is descriptive of its dimensions. Popular names given to the TFT LCD displays resolution include:

Transmissive displays must have the backlight on at all times to read the display, but are not the best option in direct sunlight unless the backlight is 750 Nits or higher. A majority of TFT displays are Transmissive, but they will require more power to operate with a brighter backlight.

Drivers update and refresh the pixels (Picture Elements) of a display. Each driver is assigned a set number of pixels. If there are more pixels than a single driver can handle, then an additional drivers are added.

A primary job of the driver is to refresh each pixel. In passive TFT displays, the pixel is refreshed and then allowed to slowly fade (aka decay) until refreshed again. The higher the refresh frequency, the sharper the displays contrast.

The controller does just what its name suggest. It controls the drivers. There is only one controller per display no matter how many drivers. A complex graphic display with several thousand pixels will contain one controller and several drivers.

The TFT display (minus touch screen/backlight) alone will contain one controller/driver combination. These are built into the display so the design engineer does not need to locate the correct hardware.

Response Time is the measurement of time it takes for a pixel/segment to change from black (OFF state) to white (ON state) and then back to black again. In other words, how fast the picture can be changed. A slow response time can result in the blurring of the picture in games, movies and even cad type programs.

If you do not see a Thin Film Transistor (TFT) Display module that meets your specifications, or you need a replacement TFT, we can build a custom TFT displays to meet your requirements. Custom TFTs require a one-time tooling fee and may require higher MOQs.

Ready to order samples for your TFT design? Contact one of our US-based technical support people today concerning your design requirements. Note: We can provide smaller quantities for samples and prototyping.

Pixel, also called Picture Element, A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device. A pixel is the basic logical unit in digital graphics. Pixels are combined to form a complete image, video, text, or any visible thing on a computer display

LCD display doesn’t operate the same way as CRT displays , which fires electrons at a glass screen, a LCD display has individual pixels arranged in a rectangular grid. Each pixel has RGB(Red, Green, Blue) sub-pixel that can be turned on or off. When all of a pixel’s sub-pixels are turned off, it appears black. When all the sub-pixels are turned on 100%, it appears white. By adjusting the individual levels of red, green, and blue light, millions of color combinations are possible

The pixels of the LCD screen were made by circuitry and electrodes of the backplane. Each sub-pixel contains a TFT (Thin Film Transistor) element.  These structures are formed by depositing various materials (metals and silicon) on to the glass substrate that will become one part of the complete display “stack,” and then making them through photolithography. For more information about TFT LCDs, please refer to “

The etched pixels by photolith process are the Native Resolution. Actually, all the flat panel displays, LCD, OLED, Plasma etc.) have native resolution which are different from CRT monitors

HD TV has 1280×720 = 921,600 pixels; Full HD has 1920x 1080=2,073,600 pixels; 8K TV has 7,680×4,320=33,177,600 pixels. he “K” in 8K stands for Kilo (1000), meaning a TV that has achieved a horizonal resolution of about 8,000 pixels.

Although we can define a LCD display with resolution, a Full HD resolution on screen size of a 15” monitor or a 27” monitor will show different. The screen “fineness” is very important for some application, like medical, or even our cell phone. If the display “fineness” is not enough, the display will look “pixelized” which is unable to show details.

PPI stands for number of pixels per inch. It is kind of pixel density. PPI describes the resolution of a digital image, not a print. PPI is used to resize images in preparation for printing

But you see other lower resolution available, that is because video cards are doing the trick. A video card can display a lower LCD screen resolution than the LCD’s built-in native resolution. The video cards can combine the pixels and turn a higher resolution into lower resolution, or just use part of the full screen. But video cards can’t do the magic to exceed the native resolution.

Looking for a specific TFT resolution? We offer LCD TFTs varying in resolution from 128x160 pixels to 800x480 pixels. Many of our TFT LCDs also have carrier boards to make integrating them into your product as simple as possible. All of our TFT LCDs offer full color RGB. If you"re not finding the correct TFT LCD for your product or project, please contact our support team to see if they can help you find an appropriate TFT display module for you.

RELEC’s standard TFT Displays are available in a wide range of sizes, from small 1.77” up to 31.5”. These cover all industry-standard resolutions, sizes, and interfaces. Standard units are available with brightness levels exceeding 1500 cd/m² and can be supplied with or without resistive or PCAP touch panels.

※Price Increase NotificationThe TFT glass cell makers such as Tianma,Hanstar,BOE,Innolux has reduced or stopped the production of small and medium-sized tft glass cell from August-2020 due to the low profit and focus on the size of LCD TV,Tablet PC and Smart Phone .It results the glass cell price in the market is extremely high,and the same situation happens in IC industry.We deeply regret that rapidly rising costs for glass cell and controller IC necessitate our raising the price of tft display.We have made every attempt to avoid the increase, we could accept no profit from the beginning,but the price is going up frequently ,we"re now losing a lot of money. We have no choice if we want to survive. There is no certain answer for when the price would go back to the normal.We guess it will take at least 6 months until these glass cell and semiconductor manufacturing companies recover the production schedule. (May-22-2021)

ER-TFT065-1 is 800x320 dots 6.5"color bar tft lcd display with EK9713 driver ic and optional 4-wire resistive touch panel, superior display quality,super wide view angle and easily controlled by MCU such as 8051, PIC, AVR, ARDUINO, ARM and Raspberry PI.

5.6 TFT with A/D Cardis highly appreciated for its versatile features including high-speed capability and crisp color display. These display panels fabricated using high-grade factor inputs and with the international quality standards. They are available in various specifications according to the needs of the clients. These products approved for precise dimensions, optimum performance, corrosion resistant nature and longer service life. These are highly demanded in the market for their excellent performance.

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Our new line of 10.1” TFT displays with IPS technology are now available! These 10.1” IPS displays offer three interface options to choose from including RGB, LVDS, and HDMI interface, each with two touchscreen options as capacitive or without a touchscreen.

The new line of 3.5” TFT displays with IPS technology is now available! Three touchscreen options are available: capacitive, resistive, or without a touchscreen.

TFT DisplayOur product range includes a wide range of 4.3 inch tft display without touch, 3.5 inch tft display without touch, 3.5 inch tft resistive touch display, 4.3 inch tft display with resistive touch, 5 inch tft display without touch and 5 inch tft display with resistive touch.

Each kind of display consists of rows and columns of pixels, which can be driven in different ways, having internal and/or external display controller and ram for framebuffers. In some technologies, each pixel needs to be updated frequently compared to other technologies where this is not necessary, as updates only happens when something changes in the GUI.

TFT stands for thin-film-transistor and is a variant of LCD displays with an active matrix. LCD-TFTs are widely used in embedded products as they are available in many different resolutions, sizes, interfaces, price ranges, etc.

Some variants of TFT-LCDs are TN and IPS panels. Examples of IPS TFT-LCDs, is the STM32F769 DISCO and STM32H747 DISCO, both running a 800*480 MIPI-DSI TFT IPS LCD display.

MIP means memory in pixels, which uses a pixel technology which only needs power/data when something changes on the screen. MIP displays are low power and runs low to full color GUIs.

TouchGFX can use any display interface, and STM32 microcontrollers offer a wide range of display interfaces connecting to Motorola 6800, Intel 8080, SPI, RGB-TFT, and MIPI-DSI.Interface# of pinsTarget resolutionsMax bandwidthBenefitsDisadvantagesSPI4*Up to 480*27216 MHzSimple hardware interface, faster than I2C,

RGB-TFT (LTDC)8/18/24*Up to 1280*800High performance, low costHigh pin count, parallel communication can cause EMC issues, can require higher clock freq

Pixel density defines how many pixels are shown per inch or square inch. Choosing the right pixel density can depend on the expectations from the end user, environment, design needs etc. Putting this into perspective, a high-end mobile phone runs a 6.1” 2340x1080 with a pixel density per square inch of 178,500, while a commonly used 5” TFT display running 800x480 has 34.816 Pixels per square inch.

Some standard resolutions, display sizes and pixel densities measured in pixels per square inch (PPI2):QVGA 320*2402.4” (27,777 PPI2)3.5” (13,061 PPI2)

For some applications it can be difficult seeing any difference, unless the display is being looked at very closely. Examples of pixels densities are: STM32F476DISCO with 16,462 PPI2 and STM32F769DISCO with 54,400 PPI2.

The dynamic color range is the ratio between two contrasting colors, like black and white. In the example above, the blue and white contains different levels of white and blue. The image on the left has lower pixel density, and the picture on the right has more pixels to show all the colors represented, creating a smoother transition between different colors and edges.

When the pixel density is too low, a staircase effect can appear. Using anti-aliasing in the application can smooth out these staircase edges in an image. When looking at the first two blue circles, the staircase effect appears, as the pixel density does not allow the display to represent enough pixels to have a high enough color range enabling high enough anti-aliasing.

Displays with either Motorla 6800, Intel 8080, SPI, or MIPI-DSI interfaces usually embed RAM (GRAM), which has the size of 1 full framebuffer. These types of displays can connect to the MCU via SPI, FMC or DSI-host(LTDC). A second ram (framebuffer) is required externally to the display RAM and this can be in the MCU or in external RAM.

In some cases the need of external RAM (external to the MCU) for storing the framebuffer is not needed, and thereby the available internal RAM in the MCU is used. If the MCU RAM is lower then 1 full framebuffer size, using the TouchGFX partial framebuffer feature is an option, allowing a very small framebuffer footprint.

The most common pixel shape is square, but some displays use non-square pixels. Pixel ratio is the ratio between the width of a pixel and the height of a pixel. The aspect ratio using a square pixel with 100 pixel width and 100 pixel height is therefore 1/1. But non-square pixels result in a different pixel aspect ratio.

The "p-display" nomenclature used in this article refers to the number of pixels displayed across the width of a given phone"s screen. Earlier phones with lower than 720p (lower than HD ready resolution) are not included in this listing. The lists below are dynamic lists and may be sorted into alphabetical order by clicking on the "sort icons" at the top of the first column.

The combination (which occurs by multiplication) of both the pixel aspect ratio and storage aspect ratio giving the aspect ratio as experienced by the viewer.

LCD panels" resolutions are often quoted in terms of raw subpixels, misnamed "pixels" in manufacturer"s specifications. Each real pixel includes one subpixel for each of three colors, so calling subpixels "pixels" inflates the claimed resolution by a factor of three. This bit of marketing obfuscation is calculated as horizontal resolution × vertical resolution × 3. For example: 640 × 480 VGA is 921,600 subpixels, or 307,200 pixels, 800 × 600 SVGA is 1,440,000 subpixels, or 480,000 pixels, and 1024 × 768 XGA is 2,359,296 subpixels, but only 786,432 full-color pixels.