Japan Display launches 7-inch WQXGA display with the new WhiteMagic technology

Japan Display Inc. has announced a 7-inch wide QXGA (1600 x 2560 pixels) with an impressive 431 ppi and 160 degree viewing angles LCD panel for tablets. Japan Display is famous as the company that puts out mobile displays that pack impressive pixel densities and offer high resolution. The screens will rely on the “WhiteMagic” technology that has been designed to provide improved outdoor visibility and lower power consumption when one is using the device indoors, according to TechBlog.


The technology uses edge-lit method, wherein the LEDs are placed at the edges of the lightguide plate. This reduces the module up to 1.16 mm. WhiteMagic is not exactly a newcomer to the world of tech. In 2012, Sony introduced the Xperia P smartphone, which came with a 4-inch screen that featured WhiteMagic. The new display is a 7-incher that arrives with 2560 x 1600 pixel resolution.

The WhiteMagic technology uses red, green blue and white (RGBW) sub pixels, wherein the light can also be filtered through the white sub pixel, to represent a true white as opposed to the usual RGB which uses only red, green and blue. This lets the display control the backlight more efficiently through the combined use of WhiteMagic and the local dimming backlight, thus reducing power consumption by 20% compared with conventional WhiteMagic modules, JDI mentions. Furthermore, it allows the screen to be twice as bright in outdoor environments.

Features of the display:

Display mode: LTPS IPS
Screen size (diagonal): 7.0-inch (17.9cm)
Number of pixels: 1,600(H) x 2,560(V) RGBW (WQXGA)
Resolution density: 431 ppi
Module thickness: 1.16mm
Dead-band: Side 1.0mm
NTSC ratio: 0.7
Contrast Ratio: 2,200:1 (19,000:1 max.)
Viewing angle: >160 degree (CR>100:1)
Surface luminance: 500cd/m2 (typ.)

Japan Display will be putting the new screen on display at the SID Display Week, in San Diego, California next week. Nevertheless, it will still be some time before tablet products bundling WhiteMagic tech will arrive on the market.

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