a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
12.Gamma Correction
ILI9325 incorporates the γ-correction function to display 262,144 colors for the LCD panel. The γ-correction is
performed with 3 groups of registers determining eight reference grayscale levels, which are gradient
adjustment, amplitude adjustment and fine-adjustment registers for positive and negative polarities, to make
ILI9325 available with liquid crystal panels of various characteristics.
Gradient
Adjustment
Register
Amplitude
Adjustment
Register
Fine Adjustment Registers (6 x 3 bits)
PRP/N0
PRP/N1
PKP/N5 PKP/N4 PKP/N3 PKP/N2 PKP/N1 PKP/N0
VRP/N0
VRP/N1
VREG1OUT
VgP0/VgN0
VgP1/VgN1
V0
V1
V2
V7
V8
VgP8/VgN8
VgP20/VgN20
VgP43/VgN43
VgP55/VgN55
V20
V43
V55
V56
V61
V62
VgP62/VgN62
VgP63/VgN63
V63
VGS
Figure 38 Grayscale Voltage Generation
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
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