Patent ID: 8149250

Claim:
A circuit for an electronic display driver IC to eliminate production related luminance variations of electronic display modules comprising: only one display driver IC comprising: an MPU interface block having inputs and outputs, wherein the inputs are display control information, display address information and gamma curve parameters and receiving feedback from a non-volatile memory, gamma control registers, a display RAM, and from a control block for voltage generation and display and timing and the outputs control said non-volatile memory storing said gamma curve parameters, said display RAM and said control block controlling voltage generation and display and timing; said control block controlling voltage generation and display and timing having input and outputs, wherein said input is from said MPU interface and the outputs are the input of a voltage generation system and the input of a display and timing control block and feedback to said MPU interface; said voltage generation system having an input and outputs, wherein the input is from said control block controlling voltage generation and display and timing and the outputs provide power supply to means for digital-to-analog conversion, amplifiers to provide gate output to a display and blocks to provide source output to a display; said display and timing control block controlling said amplifiers and said display RAM; said display RAM connected to said MPU interface and to said source output blocks; said gate output amplifiers; said source output blocks, receiving input from said display RAM and said means for digital-to-analog conversion; said gamma control registers, wherein gamma curve parameters were loaded from said non-volatile memory during power-up of said display driver IC and wherein the gamma control registers are placed between said non-volatile memory and said means for digital-to-analog conversion, wherein gamma curve tweaking is done from the individual settings of the gamma curve parameters stored in said gamma control registers; said means for digital-to-analog conversion receiving input from said gamma control registers; and said non-volatile memory holding gamma-curve parameters.