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Pixel circuit

A pixel circuit and voltage level technology, which is applied in the field of pixel circuits with low picture update rate, can solve problems such as flickering and unstable brightness, and achieve the effect of stabilizing luminous brightness and avoiding flickering

Pending Publication Date: 2021-03-19
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the screen is not being updated, maintaining the frame number of the previous screen will cause the display brightness to be unstable during the light-emitting phase, which will cause flickering

Method used

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Embodiment Construction

[0052] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0053] refer to figure 1 . figure 1 A schematic diagram of a display device 900 is shown according to some embodiments of the present invention. Such as figure 1 As shown, the display device 900 includes a controller 910 , a source driver 920 , a gate driver 930 , a display panel 940 and a multiplexing circuit 950 . The display panel 940 includes a plurality of pixel circuits 100 arranged in an array. The multiplexing circuit 950 includes a plurality of transistors Tr, Tg, Tb.

[0054] Structurally, the controller 910 is coupled to the source driver 920 and the gate driver 930 . The source driver 920 is coupled to the multiplexing circuit 950, and the multiplexing circuit 950 is connected to the pixel circuits 100 in the display panel 940 through the data lines DLr, DLg, DLb. The gate driver 930 is connected to the pixel...

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Abstract

A pixel circuit comprises a capacitor, a first transistor, a second transistor, a third transistor and a sixth transistor. The first end, the control end and the second end of the first transistor arerespectively coupled with the first to third nodes. The first end of the second transistor receives a data signal. The second end of the second transistor is coupled to the third node. The first andsecond ends of the third transistor are coupled to the first and second nodes, respectively. The first end of the fourth transistor receives a system high voltage. The second end of the fourth transistor is coupled to the first node. The first end and the second end of the fifth transistor are coupled with the third node and the light-emitting element respectively. The first end of the sixth transistor is coupled to the second end of the fifth transistor. The second end of the sixth transistor receives a reference voltage. The capacitor is coupled between the second node and the first end of the sixth transistor. The second transistor and the third transistor are simultaneously turned on and off.

Description

technical field [0001] The present invention relates to a pixel circuit, in particular to a pixel circuit suitable for low frame update rate. Background technique [0002] With increasing demand for digital display devices, low frame rate (or low frame rate, Low Frame Rate) is widely used in display devices to reduce power consumption, save power and prolong usage time. [0003] However, when the screen is not updated, the display brightness will be unstable during the light-emitting stage by maintaining the frame number of the previous screen, which will cause flickering. [0004] Therefore, how to solve the above problems is an important issue in this field. Contents of the invention [0005] The invention provides a pixel circuit. The pixel circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor and a capacitor. The first end of the first transistor is coupled to the first node. The co...

Claims

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Application Information

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IPC IPC(8): G09G3/20G09G3/30
CPCG09G3/20G09G3/30G09G2320/0233
Inventor 陈弘基林钰凯林子渊李冠桦刘匡祥
Owner AU OPTRONICS CORP
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