Sub-pixel driving circuit and global display method

A driving circuit and seed pixel technology, applied to static indicators, instruments, etc., to achieve the effect of clear image display, favorable image display, and simple structure

Active Publication Date: 2018-03-27
CHENGDU JINGSHA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The display control method of progressive scanning or interlaced scanning and lighting ensures that the lighting time of each pixel is one frame, but when scanning to a certain line of this frame, the data corresponding to the unloaded data in this frame The pixel array still maintains the data of the previous frame, and the entire image appears to be a part of the data image of the current frame and a part of the data image of the previous frame, which is not the expected image.

Method used

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  • Sub-pixel driving circuit and global display method

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Embodiment Construction

[0046] All claimed technical solutions of the present invention will be further described in conjunction with the accompanying drawings and specific drive circuit structures.

[0047] A sub-pixel driving circuit claimed in this application includes:

[0048] The first switch S1 is used to introduce the analog voltage corresponding to the gray value of the sub-pixel in the image to be displayed into the circuit;

[0049]The first capacitor C1 is used to store the analog voltage introduced by the first switch S1, and charge the second capacitor C2 and drive the drive transistor M1 through the stored analog voltage;

[0050] The second capacitor C2 is used to store the analog voltage on the first capacitor C1;

[0051] The third capacitor C3: used for voltage division;

[0052] The second switch S2 is used to connect the first capacitor C1 and the second capacitor C2, and the first capacitor C1 and the driving tube M1, and the analog voltage stored on the first capacitor C1 is ...

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Abstract

The invention discloses a sub-pixel driving circuit and a global display method. A gray value is converted into an analog voltage through progressive scanning or interlaced scanning, and the analog voltage is then applied to a sub-pixel unit. A first capacitor and a second capacitor are respectively used for voltage scanning and display driving. Global display is realized after a frame of image isscanned based on a linear relationship between a sub-pixel voltage and the gray-scale value corresponding to a sub-pixel. Before sub-pixel display is driven, a threshold value voltage of a drive tubeneeds to be captured. The threshold value voltage can be eliminated so as to make sure the sub-pixel driving circuit can work in a saturated region, an aim of compensation is attained, and image display clarity can be improved.

Description

technical field [0001] The present invention relates to a driving circuit and a display method, in particular to a sub-pixel driving circuit and a global display method. Background technique [0002] Existing display devices mainly include: OLED / LED display devices, QLED display devices, Micro-OLED / LED display devices, etc., which are composed of pixel arrays, and each pixel contains several sub-pixels. The common ones are RGB system and RGBW system. In the RGB system, each pixel contains a red sub-pixel, a green sub-pixel, and a blue sub-pixel; in the RGBW system, each pixel contains a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel sub-pixel. Effectively control the brightness of each sub-pixel of the pixel unit and realize the required display color. [0003] A typical OLED / LED sub-pixel unit driving circuit uses a method of scanning one row and lighting one row to display images. The brightness of the OLED / LED has a certain relationship with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3225
CPCG09G3/32G09G3/3225G09G2310/0264
Inventor 黎守新吴素华余有勇
Owner CHENGDU JINGSHA TECH
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