TFT-LCD Panel System Introduction Panel System Power Solution Introduction Frank Lin LFPD Team AE3 Division Jan. 2010 Panel System Power Solution for TFT-LCD VCOM Buffer GPM Gate Driver Power Solution GOA CONFIDENTIAL Panel System CONFIDENTIAL TFT-LCD Power Solution Panel Power System Gamma & Vcom Buffer Timing Controller Source Driver VGL LDO Buck Converter Boost Converter Charge Pump Regulator Gate Driver VGH TFT-LCD Panel GPM Inverter WLED Driver Back Light CONFIDENTIAL Circuit of TFT-LCD Panel Source Driver Gate Driver CONFIDENTIAL VCOM Buffer Transmittance (Source Driver) (Gate Driver) Vcom’ Vcom RT9136 CONFIDENTIAL Gamma Correction T-V curve is non-linear. CONFIDENTIAL GPM Prevent panel flicker phenomenon (VCOM) CONFIDENTIAL Gate Driver Power Solution DRVP/DRVP Ex: RT9955 Li……