Patent ID: 11967264
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display apparatus, comprising:
a display panel including a plurality of sub-pixels, the display panel having 2N grayscales;
a memory configured to store at least one set of correspondences, each set of correspondences including 2N grayscale data and 2N register values in a one-to-one correspondence with the 2N grayscale data, each register value being used to represent a grayscale voltage value of a respective grayscale data, the 2N grayscale data in a one-to-one correspondence with the 2N grayscales, in a coordinate system formed by grayscales and grayscale voltage values, a connecting line formed by sequentially connecting the grayscale voltage values corresponding to the 2N grayscales being nonlinear, and N being a positive integer greater than or equal to 6; and
a driver coupled to the memory, a signal transmission interface, and the display panel, wherein
the driver is configured to: obtain the at least one set of correspondences from the memory; receive image data from the signal transmission interface, the image data including a plurality of grayscale data corresponding to the plurality of sub-pixels; for any grayscale data in the image data, obtain a register value corresponding to the grayscale data from a set of correspondences; and output, according to the register value, a grayscale voltage corresponding to a grayscale voltage value represented by the register value to a sub-pixel of the display panel; wherein
the at least one set of correspondences is obtained by a method for obtaining correspondences between grayscales and grayscale voltages, the method comprising:
obtaining grayscale voltage values corresponding to at least two first grayscales in the 2N grayscales, wherein the 2N grayscales further include a plurality of second grayscales between two adjacent first grayscales;
obtaining grayscale voltage values in a one-to-one correspondence with the plurality of second grayscales between the two adjacent first grayscales according to the two adjacent first grayscales and grayscale voltage values corresponding to the two adjacent first grayscales; and
obtaining a set of correspondences according to the 2N grayscales and the grayscale voltage values corresponding to the 2N grayscales; wherein
a second grayscale, a grayscale voltage value corresponding to the second grayscale and the two adjacent first grayscales and the grayscale voltage values corresponding to the two adjacent first grayscales satisfy a formula:
wherein V3 represents the grayscale voltage value corresponding to the second grayscale, V2 and V1 represent the grayscale voltage values corresponding to the two adjacent first grayscales, G3 represents the second grayscale, G2 and G1 represent the two adjacent first grayscales, β represents a preset parameter, and the preset parameter is greater than 1 or less than 1;
in a case where the preset parameter is greater than 1, the connecting line formed by sequentially connecting the grayscale voltage values corresponding to the 2N grayscales is nonlinear; or, in a case where the preset parameter is less than 1, the connecting line formed by sequentially connecting the grayscale voltage values corresponding to the 2N grayscales is nonlinear.