CN-121260122-B - Display device and image data compensation method

CN121260122BCN 121260122 BCN121260122 BCN 121260122BCN-121260122-B

Abstract

The display device comprises a display panel, a display unit and a display unit, wherein the display unit is used for acquiring a same-polarity area driven by a drive signal with the same polarity from the display panel, acquiring an initial compensation value of a pixel from an image data compensation table according to image data of the pixel in the same-polarity area and preset standard image data, and determining a target compensation value of the pixel based on the initial compensation value and a preset boundary line under the condition that the initial compensation value does not carry a symbol but only has a numerical value, wherein the sign of the target compensation value is positive or negative so as to realize positive or negative compensation on the image data of the pixel. The method realizes the two-way compensation by completing signed operation in a digital domain, realizes the two-way compensation on the premise of not violating the physical limit that a hardware end cannot express a negative value, and improves the definition of images.

Inventors

GAO YULONG
HE JIAFEI
LIU ZHIJUN
LI XUHANG

Assignees

青岛信芯微电子科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251203

Claims (9)

1. A display device, characterized by comprising: A controller configured to: acquiring a same-polarity region from a display panel, wherein the same-polarity region refers to a display region driven by a driving signal based on the same polarity; acquiring an initial compensation value of the pixel from an image data compensation table according to the image data of the pixel in the same polarity region and preset standard image data; if the initial compensation value does not carry a symbol, subtracting the initial compensation value from a preset boundary line based on the initial compensation value and the preset boundary line to obtain a target compensation value of the pixel, wherein the preset boundary line is used for determining whether the initial compensation value is positive or negative; And correspondingly compensating the image data of the pixel according to the target compensation value of the pixel.
2. The display device of claim 1, wherein the controller is further configured to: performing polarity detection on the driving signals of the pixels in the display panel to obtain the positions of the pixels with the same polarity; and carrying out region generation processing according to the positions of the pixel points with the same polarity to obtain the region with the same polarity.
3. The display device of claim 1, wherein the controller is further configured to: Determining the image data deviation of the pixels according to the image data of the pixels and the preset standard image data; in the case where the image data compensation table includes an image data deviation of the pixel, the initial compensation value is read from the image data compensation table according to the image data deviation of the pixel.
4. The display device of claim 3, wherein the controller is further configured to: based on a preset numerical range, carrying out truncation processing on the image data of the pixels to obtain the image data of the pixels in the preset numerical range; And determining the image data deviation of the pixels according to the image data of the pixels in the preset numerical range and the preset standard image data.
5. The display device of claim 3, wherein the controller is further configured to: acquiring, from the image data compensation table, two image data deviations closest to the image data deviations of the pixels, in a case where the image data compensation table does not include the image data deviations of the pixels; acquiring compensation values corresponding to two image data deviations from the image data compensation table; and determining an initial compensation value of the pixel based on the compensation values respectively corresponding to the two image data deviations.
6. The display device of claim 5, wherein the controller is further configured to: and carrying out interpolation processing on the compensation values corresponding to the two image data deviations respectively, and taking the interpolated compensation values as initial compensation values of the pixels.
7. The display device of any one of claims 1-6, wherein the controller is further configured to: And adding the image data of the pixels to the target compensation value of the pixels to obtain the image data after the pixel compensation.
8. The display device of claim 1, wherein the controller is further configured to: and if the initial compensation value of the pixel carries a symbol, correspondingly compensating the image data of the pixel according to the initial compensation value of the pixel.
9. An image data compensation method, applied to a display device, comprising: acquiring a same-polarity region from a display panel, wherein the same-polarity region refers to a display region driven by a driving signal based on the same polarity; acquiring an initial compensation value of the pixel from an image data compensation table according to the image data of the pixel in the same polarity region and preset standard image data; if the initial compensation value does not carry a symbol, subtracting the initial compensation value from a preset boundary line based on the initial compensation value and the preset boundary line to obtain a target compensation value of the pixel, wherein the preset boundary line is used for determining whether the initial compensation value is positive or negative; And correspondingly compensating the image data of the pixel according to the target compensation value of the pixel.

Description

Display device and image data compensation method Technical Field The embodiment of the application relates to a terminal technology. And more particularly, to a display apparatus and an image data compensation method. Background The display device displays images or videos through a liquid crystal display panel. The pixel unit of the Liquid crystal display panel (Liquid CRYSTAL DISPLAY, LCD) mainly comprises core components such as a Liquid crystal device, a Thin film transistor (Thin-FilmTransistor, TFT) and the like. Is limited by the inherent limit of the panel production process precision, such as uniformity of liquid crystal molecule arrangement, uniformity of switching characteristics of thin film transistors, uniformity of light emission of a backlight module, and the like. Even if display panels are produced in the same lot, there is inevitably a slight difference in output characteristics of image data (e.g., brightness, contrast, color values) among different pixels and regions thereof, which is generally defined as an image data deviation. Therefore, it is necessary to provide a method with higher precision and efficiency to compensate the image data of the display panel, so as to meet the real-time and definition requirements in the process of displaying images or videos by the display device. Disclosure of Invention In order to solve the above technical problems or at least partially solve the above technical problems, embodiments of the present application provide a display device and an image data compensation method. In a first aspect, an embodiment of the present application provides a display apparatus, including: A controller configured to: acquiring a same-polarity region from a display panel, wherein the same-polarity region refers to a display region driven by a driving signal based on the same polarity; acquiring an initial compensation value of the pixel from an image data compensation table according to the image data of the pixel in the same polarity region and preset standard image data; If the initial compensation value does not carry a symbol, determining a target compensation value of the pixel based on the initial compensation value and a preset dividing line, wherein the symbol of the target compensation value is positive or negative; And correspondingly compensating the image data of the pixel according to the target compensation value of the pixel. In the embodiment of the application, the same polarity region driven based on the same polarity driving signal is firstly obtained from the display panel, and the initial compensation value of the pixel is obtained from the image data compensation table according to the image data of the pixel in the same polarity region and the preset standard image data, and the target compensation value of the pixel is determined based on the initial compensation value and the preset dividing line under the condition that the initial compensation value does not carry a symbol but only has a numerical value, and the positive compensation or the negative compensation of the image data of the pixel can be realized according to the target compensation value of the pixel because the sign of the target compensation value is positive or negative. At the same time, the signed operation is completed in the digital domain to carry out bidirectional image data compensation, and finally the legal non-negative image data is output, so that the bidirectional compensation is realized on the premise of not violating the physical limit that a hardware end cannot express a negative value, and the definition of the image is improved. In some embodiments of the application, the controller is further configured to: performing polarity detection on the driving signals of the pixels in the display panel to obtain the positions of the pixels with the same polarity; and carrying out region generation processing according to the positions of the pixel points with the same polarity to obtain the region with the same polarity. In some embodiments of the application, the controller is further configured to: Determining the image data deviation of the pixels according to the image data of the pixels and the preset standard image data; in the case where the image data compensation table includes an image data deviation of the pixel, the initial compensation value is read from the image data compensation table according to the image data deviation of the pixel. In some embodiments of the application, the controller is further configured to: based on a preset numerical range, carrying out truncation processing on the image data of the pixels to obtain the image data of the pixels in the preset numerical range; And determining the image data deviation of the pixels according to the image data of the pixels in the preset numerical range and the preset standard image data. In some embodiments of the application, the controller is further configured to: acquiring, from the imag