HX5116-A - Display Future

HX5116-A160CH Single Chip Driver for LTPS AMOLED5.10 OTP functionDATA SHEET Preliminary V03The variation of EL characteristics may cause shifting of white point panel by panel.Here fore, OTP function is required in this IC to recover the EL process variations. Inthe following, we describe our requirement.(1) At first, the VGAM1OUT must be precisely adjusted by OTP trimming.(2) Then, we will use regular register to choose the best data for the RGB gammaslope. (OTP_W = L, OTP_ENABLE register = 01)(3) Next, let OTP_W = H and write the best data (from step 2) for the RGB gammaslope to OTP through SPI.(4) For normal operation (OTP_W = L), the values of RGB gamma slopes are readfrom OTP memory data (OTP_ENABLE register = 11).OTP_W=LRegularRegister0 XX0SPIOTP_ENABLE[1:0]RGB GAMMA SLOPEVGAM1OUTOTP_W=HOTP Memory1 XX 1Figure 5. 12 Block diagram of OTP FunctionHimax 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.25-July, 2007