Method and apparatus for obtaining correspondences between grayscales and grayscale voltages, and display apparatus

A display apparatus, comprising:

• a display panel including a plurality of sub-pixels;
• 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, 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 memory and the signal transmission interface are coupled to different ends of the driver, respectively;
• 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 display apparatus is capable of displaying 2N grayscales in a one-to-one correspondence with the 2N grayscale data;
• wherein
• the 2N grayscales include at least two first grayscales and a plurality of second grayscales between two adjacent first grayscales in the at least two first grayscales, and the two adjacent first grayscales are respectively a maximum grayscale corresponding to a maximum grayscale voltage value and a minimum grayscale corresponding to a minimum grayscale voltage value;
• a grayscale voltage value of each second grayscale between the maximum grayscale and the minimum grayscale satisfies a formula:
• V
• i
• =
• (
• V
• MAX
• -
• V
• MIN
• )
• (
• G
• MAX
• β
• -
• G
• MIN
• β
• )
• ×
• G
• i
• β
• -
• (
• V
• MAX
• -
• V
• MIN
• )
• (
• G
• MAX
• β
• -
• G
• MIN
• β
• )
• ×
• G
• MIN
• β
• +
• V
• MAX
• wherein VMAX represents the maximum grayscale voltage value, VMIN represents the minimum grayscale voltage value, GMAX represents the maximum grayscale, GMIN represents the minimum grayscale, Gi represents a second grayscale, Vi represents a grayscale voltage value corresponding to the second grayscale Gi, and β represents a preset parameter.