Patent ID: 11917868
Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method of manufacturing an organic light emitting diode (OLED) display device, comprising steps of following:
S10, depositing a barrier layer and a buffer layer on a flexible substrate in order, and forming a second active layer on the buffer layer;
S20, forming a first gate insulating layer on the buffer layer, the first gate insulating layer completely covering the second active layer, and forming a first gate on the first gate insulating layer;
S30, forming a second gate insulating layer on the first gate insulating layer, the second gate insulating layer completely covering the first gate, and forming a second gate and a first active layer on the second gate insulating layer;
S40, forming an interlayer insulating layer on the second gate insulating layer, the interlayer insulating layer completely covering the second gate and the first active layer, and forming a first via hole, a second via hole, and a third via hole in the interlayer insulating layer;
S50, forming a source-drain metal layer and a light-shielding layer on the interlayer insulating layer, wherein the light-shielding layer is disposed directly above a part of the first active layer of a non-photosensitive area; and
S60, forming a planarization layer on the interlayer insulating layer, the planarization layer completely covering the source-drain metal layer and the light-shielding layer, forming a fourth via hole on the planarization layer, and forming an anode metal layer and a pixel definition layer on the planarization layer in order;
wherein in the S40, the third via hole exposes both ends of an edge of the second active layer, the first via hole exposes both ends of an edge of the first active layer in a photosensitive area, and the second via hole exposes a part of both ends of an edge of the first active layer in the non-photosensitive area of a display area.