HX5116-A - Display Future

HX5116-A160CH Single Chip Driver for LTPS AMOLED5.6.4 Gamma-Characteristics Adjustment RegisterDATA SHEET Preliminary V03This HX5116-A has register groups for specifying a series grayscale voltage thatmeets the Gamma-characteristics for the AMOLED panel used. These registers aredivided into two groups, which correspond to the gradient, amplitude, and macroadjustment of the voltage for the grayscale characteristics.Figure 5. 7 Gamma-Characteristics Adjustment function5.6.4.1 Slope adjustment registersThe slope adjustment variable registers are used to adjust the amplitude of thegrayscale voltage. This function is implemented by controlling these variable resistersin the top and bottom of the gamma resister stream for reference gamma voltagegeneration.5.6.4.2 Macro adjustment registersThe gamma macro adjustment registers can be used for fine adjustment of thereference gamma voltage. This function is implemented by controlling the N-to-1selectors (Gamma0[3:0], Gamma10[2:0], Gamma36[2:0], Gamma80[2:0],Gamma124[2:0], Gamma168[2:0], Gamma212[2:0] , Gamma255[3:0]), each of whichhas N inputs and generate one reference voltage output (V0, V10, V36, V80, V124,V168, V212, V255). These registers are available for both positive and negativepolarities.Register Groups Register name DescriptionSlope SLOPE1 3-0 Variable resistor for offset adjustmentAdjustment SLOPE2 3-0 Variable resistor for offset adjustmentGamma0 3-0 12-to-1 selector (voltage level of grayscale 0)Gamma10 2-0 8-to-1 selector (voltage level of grayscale 10)MacroAdjustmentGamma36 2-0 8-to-1 selector (voltage level of grayscale 36)Gamma80 2-0 8-to-1 selector (voltage level of grayscale 80)Gamma124 2-0 8-to-1 selector (voltage level of grayscale 124)Gamma168 2-0 8-to-1 selector (voltage level of grayscale 168)Gamma212 2-0 8-to-1 selector (voltage level of grayscale 212)Gamma255 3-0 16-to-1 selector (voltage level of grayscale 255)Table 5. 6 Gamma-Adjustment RegistersHimax ConfidentialThis information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclosedin whole or in part without prior written permission of Himax.-P.17-July, 2007