To improve the moving picture quality of TFT LCD-TVs, a lot of investigations about pseudo-impulse driving to LCD have been reported, the method of which decreased contrast ratio. In this paper ,we have investigated 32 inch-in-diagonal HDTV (1366 × 768 pixel ) panels using OCB mode, pseudo-impulse driving, and backlight blinking. High performance of MPRT (8.4 ms), contrast ratio (600:1), brightness (600 cd/m2) and wide viewing angle (>160) have been obtained. It became clear that the only combination of OCB mode using pseudo-impulse driving and blinking backlight can provide the higher performance required specification of TV application.
In this paper, newly‐developed 5.0‐inch full‐HD (1080 × RGBW × 1920) and 7.0‐inch WQXGA (2560 × RGBW × 1600) prototype LCDs utilizing a new RGBW method are described in detail. The assessment of the image quality of the new RGBW technology is described, such as color image reproducibility, white color tracking in the low power mode and tone curve correction in the outdoor bright mode.
For next-generation mobile communications, the application of millimeter wave bands is being explored for high-speed and large-capacity communications. However, coverage holes occur because millimeter waves are found to be blocked by objects. To overcome this problem of coverage holes, we have developed a reconfigurable liquid crystal metasurface reflector by applying thin film transistor liquid crystal display technology. The developed reconfigurable liquid crystal metasurface reflector was designed to operate at 28 GHz, and the measurement findings confirmed that the reflection phase control range was 260° and exhibited equivalent reflection characteristics for both vertical and horizontal polarization. Furthermore, the reflection direction control function was confirmed by varying the reflection direction between 0° and 60° with several phase distributions
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