Display panel, preparation method thereof and display device
A display panel and display device technology, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as poor display, damaged metal layer surface, etc., and achieve the effect of solving poor display
Pending Publication Date: 2022-07-05
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0004] The present invention provides a display panel and its preparation method and display device, which can solve the technical problem that the surface of the metal layer of the lower layer is easily damaged during the process of etching and forming a passivation layer via hole, thereby causing poor display
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[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation shown in the drawings Or the positional relationship is only for the convenience...
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Abstract
The invention provides a display panel and a preparation method thereof and a display device.The display panel comprises a substrate, a metal layer, an insulating layer and an electrode layer, an etching barrier layer is arranged between the metal layer and the insulating layer, the etching barrier layer is made of a conductive material, and the electrode layer is made of a conductive material. The etching barrier layer comprises an etching barrier part arranged corresponding to a via hole in the insulating layer, the electrode layer is arranged in the via hole and is electrically connected with the metal layer through the etching barrier part, and the etching barrier layer is arranged in a region corresponding to the via hole between the metal layer and the insulating layer. Therefore, the surface, corresponding to the via hole area, of the metal layer is prevented from being damaged by plasma bombardment in the process of etching to form the via hole, and the etching barrier layer is made of a conductive material, so that the electrical connection between the metal layer and the electrode layer is not affected, and the etching barrier layer is prevented from being damaged. The problem that display is poor due to the fact that the surface of the metal layer is damaged in the via hole etching process is solved.
Description
technical field [0001] The present application relates to the field of display technology, and in particular, to a display panel, a method for manufacturing the same, and a display device. Background technique [0002] The existing display panel includes an array substrate, which is composed of a certain number of pixel arrays, and each pixel is controlled by a thin film transistor to display an image, wherein the thin film transistor includes metal wirings. Currently, copper is usually used as the metal wiring. The wire material, on the one hand, the resistance of copper is small, which is conducive to reducing the power consumption of the display panel. On the other hand, because copper has a small resistance, thinner metal wiring can be used, and the film thickness can also be made thinner. Therefore, it is beneficial to improve the aperture ratio of the display panel and reduce the manufacturing cost. [0003] The metal traces are usually overlapped with the upper elect...
Claims
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IPC IPC(8): H01L27/12H01L21/77
CPCH01L27/124H01L27/1288
Inventor 陈艳玲
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD