Pixel and pixel circuit

Abstract

Disclosed are a pixel and a pixel circuit. The pixel comprises an organic light emitting diode, a drive transistor, a first switch, a third switch, and a fourth switch. The drive transistor is electrically coupled to the organic light emitting diode. When the pixel is in a data writing period, the first switch is employed to write data voltage into a control terminal of the drive transistor. When the pixel is in a compensation period, the fourth switch enables the conduction of the control terminal and a first terminal of the drive transistor so as to enable the control terminal of the drive transistor to charge and discharge through a current path and enable voltage of the control terminal of the drive transistor to form compensation voltage. The compensation voltage enables the conduction of the drive transistor during a light emitting period, and the third switch is turned on so as to enable drive current to be supplied to the organic light emitting diode. In addition, the pixel circuit is also disclosed.

Description

technical field [0001] The present invention relates to a basic electronic circuit, in particular to a pixel and its circuit. Background technique [0002] In the display panel, in order to effectively control the light-emitting diodes in the pixels, a pixel circuit is usually configured. However, the display panel using the pixel circuit will face many problems, such as transistor variation, voltage drop (IR drop), light-emitting diode aging, etc. The above-mentioned problems will lead to uneven brightness of the display panel, which will degrade the image quality of the display panel. [0003] Although the compensation circuit can be arranged in the pixel to improve various defects caused by the above-mentioned problems, however, if a large number of transistors are arranged in the compensation circuit, problems such as decreased aperture ratio of the pixel and limited resolution will be derived. [0004] This shows that above-mentioned existing mode obviously still has i...

AI Technical Summary

Problems solved by technology

[0002] In the display panel, in order to effectively control the light-emitting diodes in the pixels, a pixel circuit is usually configured. However, the display panel using the pixel circuit will face many problems, such as transistor variation, voltage drop (IR drop), light-emitting diode aging, etc. The above-mentioned problems will lead to uneven brightness of the display panel, which will degrade the image quality of the display panel.

[0003] Although a compensation circuit can be arranged in the pixel to improve various defects caused by the above problems, however, if a large number of transistors are arranged in the compensation circuit, problems such as a decrease in the pixel aperture ratio and limited resolution will be derived

[0004] This shows that above-mentioned existing mode obviously still has inconvenience and defective, and needs to be improved

In order to solve the above problems, related fields have tried their best to find a solution, but a suitable solution has not been developed for a long time.

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