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Constant current drive circuit and display panel

A constant current drive and display panel technology, applied to static indicators, instruments, etc., can solve problems such as color cast and uneven gray scale color blocks displayed on the display panel, so as to reduce uneven gray scale color blocks, improve display effect, The effect of drive current balance

Active Publication Date: 2022-05-13
CHONGQING KONKA PHOTOELECTRIC TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies of the above-mentioned related technologies, the purpose of the present invention is to provide a constant current drive circuit and a display panel, which aims to solve the problems of uneven gray scale color blocks and color cast of the display panel in the related technology.

Method used

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  • Constant current drive circuit and display panel
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  • Constant current drive circuit and display panel

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Embodiment Construction

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention.

[0020] In the existing solution, the driving current of each light emitting diode on t...

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Abstract

The invention relates to a constant current driving circuit and a display panel. By setting the selection unit between the constant current source and the light emitting diode, the driving current of the constant current source can be switched to the light emitting diodes of different output channels, so that the driving current of each light emitting diode is balanced, and the reduction of the display panel is reduced. The difference in brightness will cause uneven gray-scale color blocks and color casts, which improves the display effect.

Description

technical field [0001] The invention relates to the field of semiconductor devices, in particular to a constant current drive circuit and a display panel. Background technique [0002] Light Emitting Diode (LED) is a new generation of display technology, which has higher photoelectric efficiency, higher brightness, higher contrast and lower power consumption than liquid crystal displays in related technologies, and can Combining flexible panels to realize flexible displays has a wide range of applications in related fields. In the existing application of light-emitting diodes, Mini LED (Light Emitting Diode) has the advantages of small size, power saving, wide color gamut, and long life. There are more and more backlight products. Such as direct type LCD backlight, large screen video display, etc. Especially in the field of direct display, with the expansion of the application range, the requirements for the display effect of its LED are getting higher and higher. The dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0233
Inventor 梁雪波陈柏辅谢川龙田博仁
Owner CHONGQING KONKA PHOTOELECTRIC TECH RES INST CO LTD