AMOLED display panel and darkening correction method for pixel structure of AMOLED display panel

Abstract

The invention discloses an AMOLED display panel and a darkening correction method for the pixel structure of the AMOLED display panel. The pixel structure comprises a driving circuit and an organic light emitting diode, wherein the driving circuit is used for providing the driving current for the organic light emitting diode to make the organic light emitting diode emit light. The darkening correction method comprises steps that the laser cutting process is utilized to cut off one or more electrical connection nodes in the driving circuit to prevent the driving circuit from supplying the driving current to the organic light emitting diode, so the organic light emitting diode is made to be incapable of emitting the light to form a dark pixel point. The method is advantaged in that consumption of laser energy during darkening correction of the pixel structure can be reduced, the correction time can be further shortened, and work efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to an AMOLED display panel and a method for repairing dark spots of the pixel structure thereof. Background technique [0002] Flat panel displays are widely used in various electronic products such as TVs, computers, tablet computers and smart phones, and play a pivotal role in the electronic information industry. As an emerging representative of flat panel display, AMOLED (Active Matrix Organic Light Emitting Diode, active matrix organic light emitting diode) display panel has the advantages of self-illumination, wide viewing angle, bright color, high contrast, wide operating temperature range and suitable for flexible display. To develop rapidly. [0003] The AMOLED display panel includes criss-crossing data lines and scanning lines, and also includes a pixel structure located at the crossing area of ​​the data lines and the scanning lines, and a plurality of pixel structures a...

AI Technical Summary

Problems solved by technology

Defective bright spot means that when the display panel displays a dark picture, the defective pixel structure still emits light to form a pixel bright spot. Defective bright spot is a kind of defect with a very high occurrence rate due to factors such as process and environment. The existence of defective bright spot, The grade of the product is directly reduced. When the quantity exceeds a certain amount, the display panel will be scrapped directly, which wastes manpower and material resources and also increases the cost.

[0005] In the prior art, for the pixel structure with poor bright spots, the repair method is mainly to use laser energy to break down the organic light emitting diode in the pixel structure, so that the organic light emitting diode is damaged and cannot emit light to form a pixel dark spot

Organic light-emitting diodes occupy a large proportion of the area in the pixel structure. When the existing repair methods completely break down the organic light-emitting diodes, the consumption of laser energy is large and the repair time is relatively long.

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