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Pixel circuit

A pixel circuit and voltage technology, applied in the field of pixel circuits, can solve the problems of flickering of organic light-emitting diodes and the decrease of picture contrast, and achieve the effects of improving picture contrast, prolonging compensation time, and improving compensation accuracy

Pending Publication Date: 2022-03-01
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The OLED itself is a current-driven component, and the brightness of the OLED is controlled by giving different data voltages to the pixel circuit to generate different driving currents. However, the transistor of the pixel circuit still leaks current when it is turned off, causing the OLED to flicker. , leading to a decrease in screen contrast

Method used

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Embodiment Construction

[0055] The advantages, features and technical methods achieved by the present invention will be described in more detail with reference to exemplary embodiments and accompanying drawings to make it easier to understand, and the present invention can be implemented in different forms, so it should not be understood as being limited to what is shown here The stated embodiments, on the contrary, for those skilled in the art, the provided embodiments will make the present disclosure more thorough and comprehensive and completely convey the scope of the present invention, and the present invention will be only the appended The scope of the patent application is defined.

[0056] It should be understood that although the terms "first", "second" and the like may be used in the present invention to describe various components, components, regions, layers and / or sections, these components, components, regions, layers and / or Parts should not be limited by these terms. These terms are o...

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Abstract

A pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, a first capacitor, a second capacitor and a light emitting unit. Wherein the pixel circuit can prolong the compensation time to improve the compensation accuracy, and the light-emitting unit can be completely closed in the reset stage to improve the picture contrast.

Description

technical field [0001] The invention provides a pixel circuit which utilizes a plurality of transistors and a plurality of capacitors to prolong the compensation time and can completely turn off the light-emitting unit to improve the contrast of the picture. Background technique [0002] Organic light-emitting diodes have the advantages of self-illumination, high brightness, high contrast, and simple manufacturing process, and have been gradually applied to various types of displays. The OLED itself is a current-driven component, and the brightness of the OLED is controlled by giving different data voltages to the pixel circuit to generate different driving currents. However, the transistor of the pixel circuit still leaks current when it is turned off, causing the OLED to flicker. , leading to a decrease in screen contrast. [0003] In view of the foregoing, the inventor of the present invention conceived and designed a pixel circuit in order to improve the deficiencies of...

Claims

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Application Information

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IPC IPC(8): G09G3/30G09G3/32G09G3/3225
CPCG09G3/30G09G3/32G09G3/3225G09G2320/0247
Inventor 林志隆张瑞宏赖柏成叶佳元施立伟
Owner AU OPTRONICS CORP
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