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Driver circuit and related display system

A driving circuit and display system technology, applied in static indicators, nonlinear optics, instruments, etc., can solve problems such as image quality degradation, color shift in image frames, and lack of

Active Publication Date: 2021-05-18
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in order to maintain the transparency of the liquid crystal display, the lower layer does not have any color information, and its grayscale data is a single color
According to the characteristics of liquid crystal, the color temperature of different grayscale data is not consistent, resulting in color shift on the image frame, and the inconsistency of color temperature and color shift leads to the decline of image quality

Method used

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  • Driver circuit and related display system
  • Driver circuit and related display system
  • Driver circuit and related display system

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Embodiment Construction

[0029] Please refer to figure 1 , figure 1 It shows the color temperature of the grayscale data of the lower layer of a dual cell liquid crystal display (Dual Cell Liquid Crystal Display, Dual Cell LCD). Such as figure 1 As shown, the color temperature between low grayscale and medium grayscale is higher, while the color temperature of high grayscale is lower, such an inconsistent color temperature makes the image corresponding to the lower grayscale tend to display cool colors (such as blue), resulting in Image quality degrades. Since the purpose of the lower layer is only to control the backlight and it does not have a color filter, the color shift compensation cannot be realized in the lower layer. Therefore, compensation regarding color temperature needs to be performed in the upper layer.

[0030] Please refer to figure 2 , figure 2 It is a schematic diagram of a display system 20 according to Embodiment 1 of the present invention. Such as figure 2 As shown, th...

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Abstract

The invention discloses a driver circuit and a related display system. The driver circuit is coupled to a dual cell panel having a first cell and a second cell superposed on each other. The driver circuit includes a second cell processor and a first cell processor. The second cell processor is configured to generate a gray scale data for the second cell. The first cell processor includes a pixel data compensation circuit and a white balance compensation circuit. The pixel data compensation circuit is configured to compensate an image data for the first cell according to a brightness of the image data. The white balance compensation circuit is configured to compensate the image data for the first cell according to a color temperature of the gray scale data.

Description

technical field [0001] The invention relates to a driving circuit and a display system, in particular to a driving circuit and a display system which can be used for liquid crystal display screens. Background technique [0002] Liquid Crystal Display (LCD) is a flat panel display device, which has the advantages of low radiation, light weight and low power consumption, and has been widely used in various information technology products, such as notebook computers, personal digital assistants (Personal Digital Assistants) Assistant, PDA), and mobile phones, etc. The principle of liquid crystal display is to change the arrangement of liquid crystal molecules in the liquid crystal layer by changing the voltage difference between the two ends of the liquid crystal layer, and the light transmittance of the liquid crystal layer can be changed accordingly, which is further combined with the light source provided by the backlight module to display images . [0003] People in the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3607G09G2320/0666G02F1/13471G09G2300/023G09G2320/0242G09G2320/0271G09G2300/0452G09G3/3685G02F1/1362G09G2310/027G09G2370/08G02F1/136222
Inventor 黄显博廖砚韬从洪春
Owner NOVATEK MICROELECTRONICS CORP