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Driver IC handles virtual VGA resolution

Posted: 04 Dec 2008 ?? ?Print Version ?Bookmark and Share

Keywords:VGA resolution virtual? RGBW VPW? driver IC?

Leadis Technology Inc. has made available samples of the LDS291 supporting VP Dynamics' advanced VPW RGBW display technology. The RGBW architecture allows the LDS291 to provide two modes of operationa physical QVGA resolution mode and a virtual VGA resolution mode using a pixel density equivalent to conventional QVGA resolution. The combination overcomes limitations associated with other RGBW pixel schemes, allowing for excellent Asian character text rendering and enhanced image/video resolution, claims Leadis.

The LDS291 delivers backlight power savings of over 40 percent in physical mode and 70 percent in virtual mode. It also offers Super Power Saving (SPS) mode and Dynamic Backlight Control (DBC) mode to further maximize savings in power consumption. The SPS mode and DBC functions each provide an additional 10-20 percent reduction in backlight power consumption.

The 262,000 color LDS291 is targeted at small to mid-sized TFT displays supporting QVGA to virtual VGA applications. According to Leadis, the LDS291 is suitable for devices requiring vivid color display with very low power consumption, such as mobile phone, portable navigation device, personal media player, electronic dictionary and other handheld applications. In order to broaden its appeal, the device is compliant with MPU, RGB, and MIPI DSI interfaces.

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