Patent ID: 9704425
Date: 2017-07-11
CPC Classifications: G09G

Claim:
1. A Gamma curve adjustment method for a display apparatus, comprising: obtaining correspondence relationship between current grayscale voltages and first transmittances of the display apparatus, the first transmittances being the transmittances of the display apparatus driven by the current grayscale voltages; wherein obtaining correspondence relationship between current grayscale voltages and first transmittances of the display apparatus comprises: determining the current grayscale voltage corresponding to each gray scale based on the original correspondence relationship between voltages and transmittances of the display apparatus and an ideal Gamma curve; generating and outputting the current grayscale voltage corresponding to each gray scale to the display apparatus; testing the first transmittances of the display apparatus driven by the current grayscale voltages; and establishing the correspondence relationship between the current grayscale voltages and the first transmittances based on the first transmittances obtained by the testing; determining a target grayscale voltage corresponding to each gray scale based on the correspondence relationship between the current grayscale voltages and the first transmittances and the ideal Gamma curve, wherein an ideal transmittance T corresponding to the gray scale of the target grayscale voltage to be determined currently is determined based on the ideal Gamma curve, and two adjacent transmittances T generating and outputting the target grayscale voltage corresponding to each gray scale to the display apparatus; and obtaining an actual Gamma curve of the display apparatus driven by the target grayscale voltages as a final Gamma curve.