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Samsung SDI has developed a full color 5.0″ WVGA AMOLED display using top emission structure with a super fine pitch of 0.1365 mm 186 ppi, the world's highest density OLED display ever reported to date. Scan driver circuits and demux circuits were integrated within the display panel, using low temperature poly‐Si TFT CMOS technologies, and data driver circuits were mounted using COG IC. Peak luminescence was greater than 300 cd/ with power consumption of 500 mW with 30% of the pixels on.

We have improved a white color balance using multi‐grating period structure in the holographic backlight units that can be applicable to mobile LCD panel where several LEDs are placed at edge of guide plate as light sources. New H‐LGP is based on the characteristics of grating and its diffraction angle can be determined by specific grating period. With this idea, hologram backlight unit can realize not only lower weight and less power consumption but also higher light utilization by eliminating couple of prismatic sheets which have been widely used in conventional unit inevitably.

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