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Display substrate and preparation method and repair method thereof, and display device

A technology for a display substrate and a repair method, which is applied in the directions of organic semiconductor devices, electrical components, and electric solid-state devices, and can solve the problems of pixel driving circuit damage and low success rate.

Active Publication Date: 2019-11-15
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a display substrate and its preparation method, repair method, and display device, so as to solve the problems of low success rate and damage to the pixel driving circuit in the existing methods for repairing defective bright spots.

Method used

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  • Display substrate and preparation method and repair method thereof, and display device
  • Display substrate and preparation method and repair method thereof, and display device
  • Display substrate and preparation method and repair method thereof, and display device

Examples

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no. 1 example

[0078] Figure 7 A schematic structural diagram of the first embodiment of the substrate is shown for the present invention. Such as Figure 7 shown and combined with Figure 8 ~ Figure 21 , this embodiment shows that the substrate includes:

[0079] base 10;

[0080] The gate line GN, the first gate electrode 11, the second gate electrode 21, the first capacitor electrode 31 and the repair electrode 40 arranged on the substrate 10;

[0081] The first insulating layer 12 covering the gate line GN, the first gate electrode 11, the second gate electrode 21, the first capacitor electrode 31 and the repair electrode 40;

[0082] The first active layer 13, the second active layer 23 and the second capacitive electrode 32 arranged on the first insulating layer 12;

[0083] Covering the first active layer 13, the second active layer 23 and the second insulating layer 14 of the second capacitive electrode 32, a plurality of via holes are opened on the second insulating layer 14, an...

no. 2 example

[0107] Figure 22 A schematic structural diagram of the second embodiment of the substrate is shown for the present invention. This embodiment is an extension of the aforementioned first embodiment. This embodiment shows that the main structure of the substrate is basically the same as that of the aforementioned first embodiment. The repair electrode 40 and the gate line are arranged on the same layer. The lines FV are arranged on the same layer, the first insulating layer 12 and the second insulating layer 14 are separated between the repair electrode 40 and the first drain electrode 16 and the auxiliary cathode line FV, and the repair electrode 40 and the auxiliary cathode line FV have a second overlapping area. Such as Figure 22 As shown, the difference is that in the substrate structure shown in this embodiment, the first drain electrode 16 is connected to the repair electrode 40 through the tenth via hole.

[0108] Figure 23 It is a schematic diagram of repairing def...

no. 3 example

[0112] Figure 24 A schematic structural diagram of a third embodiment of the substrate is shown for the present invention. This embodiment is an extension of the aforementioned first embodiment. This embodiment shows that the main structure of the substrate is basically the same as that of the aforementioned first embodiment. The repair electrode 40 and the gate line are arranged on the same layer. The lines FV are arranged on the same layer, the first insulating layer 12 and the second insulating layer 14 are separated between the repair electrode 40 and the first drain electrode 16 and the auxiliary cathode line FV, and the repair electrode 40 and the auxiliary cathode line FV have a second overlapping area. Such as Figure 24 As shown, the difference is that in the substrate structure shown in this embodiment, the auxiliary cathode line FV is connected to the repair electrode 40 through the eleventh via hole.

[0113] Figure 25 It is a schematic diagram of repairing de...

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Abstract

The invention provides a display substrate and a preparation method and a repair method thereof, and a display device. The display substrate includes a drive circuit layer and a light emitting structure layer which are stacked on a base. The drive circuit layer includes a drive transistor, an auxiliary cathode line and a repair electrode. The anode of the light emitting structure layer is connected with the drain electrode of the drive transistor, and the cathode of the light emitting structure layer is connected with the auxiliary cathode line. The repair electrode is used to connect the drain electrode of the drive transistor with the auxiliary cathode line during the repair of bad bright spots. According to the invention, the repair electrode is set in advance, and the repair electrodeis used to connect the drain electrode of the drive transistor with the auxiliary cathode line to repair bright spots as dark spots when there are bad bright spots. Therefore, bad bright spots of a top emitting type display substrate can be repaired, the product yield is improved, the success rate of repair is high, and damage to the pixel drive circuit and other defects will not be caused.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a preparation method and a repair method thereof, and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) has ultra-thin, large viewing angle, active light emission, high brightness, continuously adjustable light color, low cost, fast response, low power consumption, wide operating temperature range and flexible Display and other advantages, has gradually become a promising next-generation display technology. According to the different light emitting directions, OLED can be divided into bottom emission type and top emission type. Among them, the bottom emission OLED includes a light emitting area and a driving circuit area arranged side by side in a plane parallel to the panel, the light emitting structure is arranged in the light emitting area, a plurality of thin film transistors (Thin Film Transistor, TFT) and storage capa...

Claims

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Application Information

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IPC IPC(8): H01L27/32
CPCH10K59/12H10K59/80522H01L27/124H10K71/861H01L27/1214H10K71/00H10K50/824H10K59/131H10K59/1213H10K59/1201
Inventor 孙诗谢学武艾雨刘博文刘浩孔玉宝张阿猛
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD
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