Layered AMOLED pixel compensation circuit

Abstract

The invention relates to a layered AMOLED pixel compensation circuit. The array substrate comprises a lower-layer thin film transistor area and an upper-layer thin film transistor area which are arranged on a substrate, and an insulating layer is further arranged between the upper-layer thin film transistor area and the lower-layer thin film transistor area. The electrode of the upper-layer thin film transistor region is connected with the electrode of the lower-layer thin film transistor region through a connecting wire penetrating through the insulating layer; an organic light-emitting diodeis further patterned in the upper-layer thin film transistor area, and the thin film transistor in the upper-layer thin film transistor area and the thin film transistor in the lower-layer thin filmtransistor area are connected to form a compensation circuit of the organic light-emitting diode. Different from the prior art, the technical scheme has the advantages that different lower-layer thinfilm transistor regions and upper-layer thin film transistor regions on the substrate are designed, and finally, the area occupied by the plurality of thin film transistors of the pixel compensation circuit is reduced in the vertical direction, so that the occupied area of a single pixel is reduced, and finally, the resolution of a screen is improved.

Description

technical field [0001] The invention relates to the design of a pixel compensation circuit, in particular to a novel AMOLED pixel compensation circuit design with upper and lower layers. Background technique [0002] Today, with the continuous improvement of technology, people's requirements for display screens are also increasing, that is, the demand for high resolution is increasing. For example, the resolution of VR, AR, MR and other displays is as high as 2000PPI. For OLED panels, the in-plane 2T1C Pixel circuit will be affected by Vth drift, resulting in uneven brightness of the panel. A compensation circuit is needed to improve the display effect of the panel. In order to achieve a better compensation effect, the compensation circuit will have multiple TFTs, which may There will be 4T, 5T, 6T..., so too many TFTs will increase the area occupied by the Pixel, which will lead to a decrease in the number of Pixels that the panel can accommodate, that is, the resolution wi...

AI Technical Summary

Problems solved by technology

For OLED panels, the in-plane 2T1C Pixel circuit will be affected by Vth drift, resulting in uneven brightness of the panel. A compensation circuit is needed to improve the display effect of the panel. In order to achieve a better compensation effect, the compensation circuit will have multiple TFTs, which may There will be 4T, 5T, 6T..., so too many TFTs will increase the area occupied by the Pixel, which will lead to a decrease in the number of Pixels that the panel can accommodate, that is, the resolution becomes lower, which cannot meet the high-resolution requirements

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