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Thursday, May 10, 2018
Japan Display Develops 1001ppi LCD for Virtual Reality Applications

Japan Display Inc. (JDI) has developed a 3.25-inch 1001ppi low temperature polysilicon (LTPS) TFT LCD specifically-designed for virtual reality (VR) head mount display (HMD) applications.

The Japanese company plans to start commercial shipments of the new display by the end of March in 2019.

VR-HMD devices should be able to offer natural and realistic experience to users, so the use of low-latency, high pixel density screens are essential.

JDI announced the development of a high-pixel-density 803ppi LCD last year, which helped to alleviate problems associated with users noticing pixel grid lines (i.e., pixelation). However, even more compact-size LCDs and higher magnification lenses are required in order to to decrease the size and weight of futuer HMD devices.

  803ppi LTPS TFT-LCD 1001ppi LTPS TFT-LCD
LCD mode IPS designed for VR
Size 3.60-inch 3.25-inch
Resolution 1920 x RGB x 2160 2160 x RGB x 2432
Pixel density 803 ppi 1001 ppi
Response time 4.5msec (gray-to-gray, worst case) 2.2msec (gray-to-gray, worst case)
Refresh rate 90Hz 120Hz
Backlight method Global blinking

JDI's new 1001ppi LTPS TFT LCD not only features high pixel density, but also has an improved LC response time - 4.5msec to 2.2msec (gray-to-gray, worst case). This helps the reduction of motion blur. In addition, the 1001ppi LTPS TFT LCD is able to operate at 120Hz refresh rate, though most displays for VR-HMD applications operate below 90Hz. The 120Hz refresh rate contributes to a minimum system latency.

JDI will showcase the 1001ppi LTPS TFT LCD at SID DISPLAY WEEK 2018, held in Los Angeles, California, May 20 to May 25 2018.

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