Mura compensation module and method, display device and method
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A technology of compensation module and compensation method, which is applied in the field of mura compensation, and can solve problems such as large data volume and large calculation volume
Inactive Publication Date: 2015-10-21
BOE TECH GRP CO LTD +1
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[0005] The present invention aims at the problem that the existing mura compensation technology needs to store a large amount of data and a large amount of calcula
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Embodiment 1
[0043] Such as Figure 5 to Figure 8 As shown, this embodiment provides a mura compensation module, which includes an acquisition unit, a storage unit, a judgment unit, and a compensation unit.
[0044] The mura compensation module is used to compensate the original image data (such as data from the graphics card), so that when the compensated data is used for display, an image without mura can be obtained.
[0045] Specifically, the above acquisition unit is used to acquire the display data and location address of the pixel.
[0046] That is, the acquisition unit is used to sequentially extract the data of each pixel from the data of the original image for subsequent processing.
[0047] Among them, "display data" is data representing the content that the pixel should display (it can be composed of data from multiple sub-pixels). Preferably, the display data is the gray value of the pixel (such as the sum of the gray values of three sub-pixels), and the gray value is a value repre...
Embodiment 2
[0081] Such as Figure 5 to Figure 8 As shown, this embodiment provides a mura compensation method, which includes:
[0082] S1. Obtain the display data and location address of the pixel.
[0083] S2. Determine whether the pixel is a sampled pixel according to the pre-stored compensation table, where the compensation table includes the compensation point and the corresponding compensation value, the pixel corresponding to the compensation point is the sampling pixel, and the sampling pixel is part of the pixel in the display panel but includes all existing mura pixels.
[0084] S3. Compensate the display data according to the compensation value of the compensation point corresponding to the sampled pixel.
[0085] The mura compensation method of this embodiment is the method executed by the mura compensation module described above. Among them, first extract the display data and location address of each pixel in turn, and determine whether it is a sampled pixel according to the locat...
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Abstract
The invention provides a mura compensation module and a method, a display device and a method, which belongs to the technical field of mura compensation and aims at solving the problems of a large amount of data required to be stored and a large amount of computation by the existing mura compensation technology. The mura compensation module comprises an acquisition unit, a storage unit, a judging unit and a compensation unit, wherein the acquisition unit is used for acquiring display data and a position address of a pixel; the storage unit stores a compensation list, the compensation list comprises compensation points and corresponding compensation values, pixels corresponding to the compensation points are sampling pixels, and the sampling pixels are partial pixels in a display panel and comprise all pixels having mura; the judging unit is used for judging whether the pixels are the sampling pixels; and the compensation unit is used for compensating the display data of the sampling pixels according to the compensation values of the compensation points corresponding to the sampling pixels.
Description
Technical field [0001] The invention belongs to the technical field of mura compensation, and in particular relates to a mura compensation module and method, a display device and a method. Background technique [0002] Such as figure 1 As shown, due to the influence of process stability, technological maturity, etc., mura defects often exist in display panels, that is, the actual brightness of some pixels is darker or brighter than the theoretical brightness that should be displayed. To eliminate mura, the existing method is to take pictures of the display panel, and figure 2 As shown, the brightness of each pixel in the obtained image (a row of pixels in the figure is taken as an example) is processed for background removal and noise reduction to obtain its actual brightness, and then the actual brightness is compared with the theoretical brightness, and according to the brightness difference between the two Obtain the compensation value (such as gray correction coefficient), a...
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