Au Optronics Corporation

Hang-Wei Tseug

Chia-Tien Peng

An-Thung Cho

Chien-Sen Weng

Kun-Chih Lin

Ching-Chieh Shih

Yuan-Jun Hsu

Ming-Huang Chuang

A manufacturing method of a thin film transistor array substrate is provided. In the method, a substrate having a display region and a sensing region is provided. At least a display thin film transistor is formed in the display region, a first sensing electrode is formed in the sensing region, and an inter-layer dielectric layer is disposed on the substrate, covers the display thin film transistor, and exposes the first sensing electrode. A patterned photo sensitive dielectric layer is then formed on the first sensing electrode. A patterned transparent conductive layer is subsequently formed on the substrate, wherein the patterned transparent conductive layer includes a pixel electrode coupled to the corresponding display thin film transistor and includes a second sensing electrode located on the patterned photo sensitive dielectric layer. A manufacturing method of a liquid crystal display panel adopting the aforementioned thin film transistor array substrate is also provided.

Manufacturing method of thin film transistor array substrate and liquid crystal display panel

A manufacturing method of a thin film transistor array substrate incorporating the manufacture of a photo-sensor is provided. In the manufacturing method, a photo-sensing dielectric layer is formed between a transparent conductive layer and a metal electrode for detecting ambient light. Since the transparent conductive layer is adopted as an electrode, the ambient light can pass through the transparent conductive layer and get incident light into the photo-sensing dielectric layer. Therefore, the sensing area of the photo-sensor can be enlarged and the photo-sensing efficiency is improved. In addition, the other side of the photo sensitive dielectric layer may be a metal electrode. The metal electrode can block the backlight from getting incident into the photo-sensing dielectric layer and thus reduce the background noise. A manufacturing method of a liquid crystal display panel adopting the aforementioned thin film transistor array substrate is also provided.

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Tainan, Taiwan

Hang-Wei Tseug