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Display panel and preparation method thereof, edge crack detection method and display device

A display panel and display device technology, applied in semiconductor/solid-state device testing/measurement, semiconductor/solid-state device components, semiconductor devices, etc., can solve problems such as minor crack detection, missed detection, and inability to accurately locate crack positions, etc., to achieve Avoid missed inspections, improve detection accuracy, and avoid packaging failure effects

Pending Publication Date: 2020-08-04
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrical parameters of the PCD line are affected by many factors (the film itself, the environment, etc.), and the use of the PCD line cannot detect slight cracks, and the crack position cannot be accurately located, and there is a risk of missed detection
[0004] To sum up, the existing technology cannot detect slight cracks on the edge of the display panel, and cannot accurately locate the cracks, there is a risk of missed detection, which affects the quality and life of the display panel

Method used

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  • Display panel and preparation method thereof, edge crack detection method and display device
  • Display panel and preparation method thereof, edge crack detection method and display device
  • Display panel and preparation method thereof, edge crack detection method and display device

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Embodiment Construction

[0040] The embodiment of the present application provides a display panel, such as figure 1 , figure 2 As shown, among them, figure 2 for figure 1 Along the cross-sectional view of AA', the display panel is divided into a display area 1 and a peripheral area 2 outside the display area 1; the peripheral area 2 includes: a base substrate 3 located on the base substrate 3 The first electroluminescent device 4, and the inorganic encapsulation layer 5 located on the detection electroluminescent device 4; the first electroluminescent device 4 includes: the first anode 6, the first light emitting device stacked in sequence layer 7 and the first cathode 8 .

[0041]It should be noted that, in the prior art, a display panel crack detection (Panel Crack Detect, PCD) line loop is usually set up, and a signal is provided to the PCD loop during crack detection. If the PCD line is broken, a green light will appear under the black screen. If there is no break in the PCD line, a purple ...

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Abstract

The invention discloses a display panel, a preparation method thereof, an edge crack detection method and a display device, and the invention is used for improving the crack detection accuracy of thedisplay panel, avoiding the risks of cracks, packaging failure and missing detection, improving the product quality and prolonging the product service life. The embodiment of the invention provides the display panel. The display panel is divided into a display area and a peripheral area outside the display area. The peripheral region comprises a substrate, a first electroluminescent device locatedon the substrate, and an inorganic packaging layer located on the first electroluminescent device. The first electroluminescent device comprises a first anode, a first light-emitting layer and a first cathode which are stacked in sequence.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display panel and a manufacturing method thereof, an edge crack detection method, and a display device. Background technique [0002] With the continuous development of display technology, display panels are more and more widely used in various fields. In the actual production process of the display panel, cracks are prone to occur under the action of stress. The existence of cracks will lead to the failure of the moisture penetration package, further forming display defects, and affecting the quality and service life of the display panel. [0003] Therefore, the prior art requires accurate crack detection on the display panel. The main detection method is to form a circle of metal wires on the edge of the display panel as a panel crack detection (Panel Crack Detect, PCD) line, and detect cracks through the input of electrical signals. The electrical parameters (cur...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L23/544H01L21/66
CPCH01L22/34H01L22/12H10K59/124H10K59/131
Inventor 佘建民杨圣代科徐晶金凤阳张彩霞李千数
Owner BOE TECH GRP CO LTD
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