平板显示技术C3TFTLCDdriver课件幻灯片.ppt

CPU Signal On the Glass Substrate Integration 【a-Si LCD】 Driver IC Controller IC RAM Power supply IC … 【System LCD】 Poly-Si Thin Size ／ Lightweight 3 Side Free ／ Small Fringe Number of Parts Reduction Peripheral Function Parts 1.Color TFT LCD PANEL Configuration a) Panel Configuration and Resolution Resolution Pixel Arrangement Sub-Pixel Screen Ratio Screen Size (for commercial products) 640 ×480 800 ×600 VGA SVGA XGA SXGA UXGA QXGA 1024 ×768 1280 ×1024 1600 ×1200 1920 ×1080 2048 ×1536 921,600 1,440,000 2,359,296 3,932,160 5,760,000 6,220,800 9,437,184 4 : 3 4 : 3 4 : 3 5 : 4 4 : 3 16 : 9 9.5”, 10.4” 10.4”, 11.3”, 12.1” 12.1”, 13.3”, 14.1”, 15.1” 14.1”, 15.7”, 18.1”, etc. 20.1”, etc. DCLK (@60Hz) 25MHz 40MHz 65MHz 93/112MHz 133/160MHz Remarks Pixel R G B R G B R R G B R G B R R G B R G B R Figure 4 Arrangement of Vertical Stripe Row driver Row driver Column Driver G1 G2 D1 D2 TFT-LCD Panel GN Column Driver Column Driver Dot(sub pixel) o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o Table 1 Resolution Figure 3 Configuration diagram 1 HDTV 4 : 3 Unfinished VESA Standard 133/160MHz 211/265MHz 2. Understanding How to Drive TFT-LCD The LCD is the display element using the liquid crystal and is improved by varied technologies for high video quality and applied technologies are described. 1) Polarity Inversion Method The Polarity of Applied voltage should be periodically inverted in order to prevent the specific heat, which is generated if DC voltage is applied to the liquid crystal for a long time. It is called the Polarity Inversion Method. a) Frame Inversion It is the method that allows the polarity of data voltage, which is permitted to the liquid crystal for common electrode voltage, to be identified by frame unit. As figure 10 shows, if the data voltage of positive polarity is permitted to the Even Frame, the data voltage of negative polarity is permitted to the Odd Frame. - The consumption of current generated