Display baseplate, preparation method for same, and display device

Abstract

The embodiment of the invention provides a display baseplate, a preparation method for the same and a display device, relates to the technical field of display, can solve the problem that liquid diffusion is uneven on an orientation layer caused by that a through hole exists on the baseplate surface during coating of the orientation layer liquid on the display baseplate, can avoid Mura defects in the display face and can increase display quality. The display baseplate comprises a substrate baseplate as well as a conductive connecting part, an insulating layer and an electrode which are successively far from the substrate baseplate, wherein a through hole is formed in the insulating layer, and the electrode is connected to the conductive connecting part by the through hole; and the through hole is located in a display area of the display baseplate. The display baseplate also comprises a filling part which is disposed on the electrode and corresponding to interior of the through hole area, wherein the height of the filling part is larger than or equal to the depth of the through hole and smaller than a preset height; and the preset height is equal to the sum of the height of the insulating layer and the height of a spacer in a liquid crystal display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a preparation method thereof, and a display device. Background technique [0002] Display electrodes on the substrate (such as figure 1 The common electrode shown) and the underlying metal traces (such as figure 1 The common electrode lines shown) usually need to be connected through via holes, because the thickness of the insulating layer between the electrodes and the metal traces is relatively large, that is, the depth of the via holes is relatively deep, resulting in the use of inkjet printers (Inkjet) equipment in the display When the orientation layer (usually made of polyimide polyimide material, so referred to as PI) liquid is coated on the substrate, the PI liquid has poor diffusion at the via hole, which is manifested by the fact that some via holes are filled with PI liquid, and some via holes are not filled. There is PI liquid. Since the PI li...

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Problems solved by technology

[0003] In view of this, in order to solve the problems of the prior art, the embodiments of the present invention provide a display substrate and its preparation method, and a display device, which can solve the problems caused by the presence of via holes on the surface of the substrate when coating the alignment layer liquid on the display substrate. The problem of uneven diffusion of liquid in the alignment layer avoids Mura defects in the display surface and improves the display quality

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