Color gamut compensation method and device for display panel
A compensation method and display panel technology, applied in static indicators, instruments, etc., can solve problems such as small difference
Active Publication Date: 2020-09-18
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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[0005] Embodiments of the present invention provide a color gamut compensation method and device for a display panel to solve the problem that the difference between the driving voltage of the red sub-pixel, the green sub-pixel and the blue sub-pixel and the target driving voltage is less than The problem with preset thresholds
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[0023] The embodiments of the present invention will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the embodiments of the present invention.
[0024] figure 1 It is a schematic flowchart of a color gamut compensation method for a display panel provided in this embodiment. refer to figure 1 , the method includes the following steps:
[0025] Step 110, when the driving voltage of the red sub-pixel, the green sub-pixel and the blue sub-pixel is less than the target driving voltage, obtain the red sub-pixel, the green sub-pixel and the blue sub-pixel at gray levels (r, 0, 0), ( Luminance and chromaticity coo...
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The present invention discloses a color gamut compensation method and device of a display panel and belongs to the display technical field. The method comprises the following steps that: when the driving voltage of red subpixels, green subpixels and blue subpixels is smaller than a target driving voltage, a voltage compensation proportion value lookup table and a color gamut compensation lookup table are established according to the brightness and chromaticity coordinates of the red subpixels, the green subpixels and the blue subpixels under gray scales of (r, 0, 0), (0, g, 0),(0, 0, b), (r, 255, 255), (255, g, 255) and (255, 255, b ); and voltage compensation is performed on the subpixels, green subpixels and blue subpixels according to the two lookup tables until the difference value of the driving voltage of the red subpixels, green subpixels and blue subpixels and the target driving voltage is smaller than a preset threshold value. With the method and device of the invention adopted, the problem that the difference value of the driving voltage of the red subpixels, green subpixels and blue subpixels and the target driving voltage is smaller than the preset threshold value due to voltage drop can be solved.
Description
technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a color gamut compensation method and device for a display panel. Background technique [0002] With the development and improvement of science and technology, various displays are widely used in daily life and work, and people have higher and higher requirements for the display effect of the display. [0003] In related technologies, most display devices use low-temperature polysilicon thin film transistors to construct pixel circuits to supply current to the display device. When the three primary colors of red, green, and blue are mixed to emit light, a voltage drop will occur when the branch (for example, red) current flows through the conductive layer, that is, the driving voltage during actual operation is lower than the theoretical driving voltage value, so the voltage compensation problem needs to be considered. Due to the existence of the volt...
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IPC IPC(8): G09G3/20
CPCG09G3/2003G09G2320/0242
Inventor 陈明玉孔祥梓欧阳珺婷
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD