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Super High Aperture - the technology behind the new iPad screen

Posted on Monday, March 12 2012 @ 15:32:24 CET by


DisplaySearch discusses Super High Aperture (SHA), the LCD pixel design technology used by the new iPad's screen to achieve a resolution of 2048 x 1536 pixels. You can learn about it over here.
Apple promotes the new display at length on its iPad Features page, including a graphically interesting video under “Breakthrough technology. For a breakthrough display.” explaining, “When you squeeze four times the pixels into the same space, signals can get crossed, colors become distorted and images get fuzzy. To solve this we had to elevate the pixels onto a different plane and separate from the signals.”

If you didn’t catch what Apple means by that, they are referring to SHA (Super High Aperture) pixel designs. SHA is a method of increasing aperture ratio by applying approximately a 3 µm thick photo-definable acrylic resin layer to planarize the device and increase the vertical gap between the ITO pixel electrodes and signal lines. As we explained in our TFT LCD Process Roadmap Report, this reduces unwanted capacitive coupling and enables the electrode to be extended over the gate and data lines without causing cross talk or affecting image quality—thus increasing aperture area.




 



 

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