US 2015/0318315 A1Published application

Thin film transistor array substrate and method for making the same

OwnerChangyi Su, Yangling Chenginventors

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Abstract

The present application provides a thin film transistor array substrate and a method for making the same. A technical solution of the present application is to divide a removable area from a planarization layer of a thin film transistor array substrate, all organic photoresist material in the removable area is entirely removed, and sealant is directly spread on the protection layer, which is easier to stick, to achieve better sealant adhesion effect. In this way, the whole structure of a TFT-LCD using the thin film transistor array substrate provided by the present application is adhered more firmly. Compared with the prior art, the method of the present application can improve the product pass rate effectively, and is simple and easy to execute.

Claims10

Dependent claims

A method for making a thin film transistor array substrate, comprising the following steps:

S01, forming thin film transistors on a substrate body, forming a protection layer covering the substrate body and the thin film transistors using insulation material, and forming a planarization layer on the protection layer using organic photoresist material;
S02, dividing the planarization layer into a display area and a removable area, exposing selected portions of the display area completely, and exposing the removable area incompletely;
S03, performing a photoresist development process, forming connection holes in the selected portions of the display area, and partially removing the removable area to form a shielding layer that is thinner than the planarization layer on the protection layer;
S04, forming wire holes communicating with the connection holes and configured to lead wires of the thin film transistors in the protection layer;
S05, after forming the wire holes, removing the shielding layer to partially expose the protection layer and thereby form an adhesion area, and spreading sealant on the adhesion area.

2 more elements

Dependencies are inferred from the claim text.