Base plate and preparation method thereof and display device

A substrate and hydroxyl technology, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as disconnection and affecting the display effect of display devices
CN110797303AActive Publication Date: 2020-02-14BOE TECH GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BOE TECH GRP CO LTD
Publication Date
2020-02-14

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Abstract

The embodiment of the invention provides a base plate and a preparation method thereof and a display device, and relates to the technical field of display. The slope angle of a second via hole can bereduced so as to improve the display effect of the display device. The preparation method of the base plate comprises the following steps: a first flat film and a second flat film are sequentially formed on a substrate, and the hardness of the first flat film is larger than that of the second flat film; the second flat film and the first flat film are etched by adopting a photo-etching process toobtain a first flat layer and a second flat layer which are sequentially arranged on the substrate; and the first flat layer comprises a first via hole, the second flat layer comprises a second via hole, and the orthographic projection of at least part of the second via hole on the substrate is overlapped with the orthographic projection of the first via hole on the substrate.
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Description

technical field

[0001] The invention relates to the field of display technology, in particular to a substrate, a preparation method thereof, and a display device. Background technique

[0002] With the rapid development of display technology, in order to bring better experience to users, display devices such as mobile phones are also constantly updated and iterated.

[0003] The display device includes a plurality of conductive film layers, an insulating layer is arranged between the plurality of conductive film layers, and some conductive film layers need to be electrically connected through via holes on the insulating layer. If the slope angle of the via holes is large (85°~ 90°), the conductive film layer passing through the via hole is easily disconnected in the via hole, thereby affecting the display effect of the display device. Contents of the invention

[0004] Embodiments of the present invention provide a substrate, a manufacturing method thereof, and a display ...

Claims

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