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Pixel circuit

A technology of pixel circuit and circuit, applied in the field of pixel circuit

Active Publication Date: 2019-07-12
AOT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In particular, when an oxide semiconductor TFT is used, the above-mentioned situation is exacerbated

Method used

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Embodiment Construction

[0046] In order to make the purpose, features and advantages of the present invention more comprehensible, the specific embodiments of the present invention are listed below, together with the accompanying drawings, and are described in detail as follows. It should be understood that the purpose of the following examples is to illustrate the concept of the present invention but not to limit the protection scope of the present invention.

[0047] figure 1 is a schematic block diagram showing a pixel array according to an embodiment of the first aspect of the present invention. The pixel array 100 may include a plurality of pixel circuits 110 . Each pixel circuit 110 in the pixel array 100 may have a similar circuit structure, and the difference is that each pixel circuit 110 may be coupled to a different gate line. According to an embodiment of the present invention, the pixel circuit 110 may include a voltage-current conversion circuit 120 , a current storage circuit 130 and...

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Abstract

A pixel circuit comprises a voltage-current conversion circuit, a current storage circuit and a light-emitting element. The voltage-current conversion circuit is coupled to a gate line and a data line, and is used for generating a first driving current according to a data voltage supplied to the data line. The current storage circuit is coupled to the voltage-current conversion circuit and a powerline, and is used for generating a second driving current according to the first driving current. The light emitting element is coupled to the current storage circuit for emitting light according tothe second driving current. In a current storage stage of the pixel circuit, the second driving current and the first driving current have the same current magnitude. In a light emitting stage after the current storage stage, the light emitting element emits light according to the second driving current.

Description

technical field [0001] The present invention relates to a pixel circuit of a display device, in particular to a pixel circuit capable of compensating for fluctuations in critical voltage to improve inconsistency of driving current. Background technique [0002] With the rapid development of display technology, display devices with touch functions are becoming more and more popular because of their advantages such as visualization. According to the relative positions of the touch panel and the display panel, existing display devices can be roughly divided into two types, namely, on-cell touch panels and in-cell touch panels. Compared with the on-cell touch panel, the in-cell touch panel is thinner and has higher light transmittance, so it has wider applications. As for the current display devices, such as the current light-emitting devices, organic light-emitting diodes (OLEDs) are becoming more and more widely used in high-performance devices because of their characteristic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225
Inventor 佐野景一西川龙司
Owner AOT LTD
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