pixel circuit

A pixel circuit and electrical connection technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problem of uneven brightness of the display screen, improve the uneven brightness of the display screen, large pixel wiring space, and improve the uniformity of the screen. degree of effect

Active Publication Date: 2016-08-24
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above factors will cause the display screen of the organic light emitting diode display device to have uneven brightness.

Method used

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Embodiment Construction

[0021] The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the provided embodiments are not intended to limit the scope of the present invention, and the description of the structure and operation is not intended to limit the order of execution, and any recombination of components The structure of the resulting device with equal efficacy is within the scope of the present invention. In addition, the drawings are for illustration purposes only and are not drawn to original scale. For ease of understanding, the same components will be described with the same symbols in the following description.

[0022] Unless otherwise specified, the terms used throughout the specification and claims generally have the ordinary meaning of each term as used in the art, in this disclosure and in the special context. Certain terms used to describe the present invention are discussed below or elsewhere in this specification to provide thos...

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Abstract

A pixel circuit comprises an energy storage element, a driving transistor, a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor. The first end of the first transistor is electrically connected with the first end of the energy storage element, the first end of the second transistor is used for selectively receiving a data voltage or a pre-charging voltage, and a grid electrode of the third transistor and a grid electrode of the second transistor are used for receiving a scanning signal. A grid electrode of the fifth transistor and a grid electrode of the fourth transistor are used for receiving a light-emitting enabled signal. According to the technical means, under the condition that the same data voltage is provided, and even if the critical voltage of the driving transistor shifts, the same driving current can still be generated to drive a light-emitting element. Therefore, the phenomenon of uneven brightness of a displayed picture can be avoided.

Description

technical field [0001] The present invention relates to a pixel circuit, and in particular to a pixel driving circuit suitable for organic light emitting diodes. Background technique [0002] Flat panel display devices have the advantages of low power consumption, low heat generation, light weight, etc., and have been widely used in various electronic products. Flat panel display devices can generally be classified into two types, passive matrix and active matrix, according to their driving methods. The passive-matrix display device is limited by its driving mode, and has disadvantages such as short lifespan and incapability of being large-scaled. Although the cost of the active matrix display device is more expensive and the manufacturing process is more complicated, it can meet the display requirements of large size and high resolution. Therefore, active matrix display devices have become the mainstream of flat panel display devices. Among them, an active organic light-...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G09G3/3233H01L27/32G09G3/3291
Inventor林钰凯叶佳元刘俊彦
OwnerAU OPTRONICS CORP