TFT (thin film transistor) backboard manufacturing method and TFT backboard structure

Abstract

The invention provides a TFT (thin film transistor) backboard manufacturing method and a TFT backboard structure. The TFT backboard manufacturing method includes steps of 1, providing a substrate (20) with a grid electrode (21), an insulation layer (22) and a semiconductor layer (23); 2, continuously filming to sequentially form a second metal layer, a reflecting electrode layer and a conductive oxide layer on the substrate (20); 3, subjecting the second metal layer, the reflecting electrode layer and the conductive oxide layer to photoetching processing so as to pattern the same, respectively forming source / drain electrodes (253), reflecting electrodes (252) and pixel electrodes (251) and connecting the source / drain electrodes (253) with the semiconductor layer (23); 4, forming a protecting layer on the source / drain electrode (253), the reflecting electrodes (252) and the pixel electrodes (251); 5, forming a flat pixel definition layer (27) on the protecting layer (26); 6, forming a photoresistance spacer (28) on the flat pixel definition layer (27).

Description

technical field [0001] The invention relates to the technical field of plane display, in particular to a method for manufacturing a TFT backplane and a TFT backplane structure. Background technique [0002] Flat-panel display devices have many advantages such as thin body, power saving, and no radiation, and have been widely used. Existing flat panel display devices mainly include liquid crystal display devices (Liquid Crystal Display, LCD) and organic electroluminescent display devices (Organic Light Emitting Display, OLED). [0003] Organic electroluminescent display devices have the advantages of self-illumination, no need for backlight, high contrast, thin thickness, wide viewing angle, fast response, flexible panels, wide operating temperature range, simple structure and manufacturing process, etc. characteristics, is considered to be the next generation of flat-panel display emerging application technology. [0004] OLED generally includes: a substrate, an ITO (indiu...

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Problems solved by technology

[0009] Another object of the present invention is to provide a TFT backplane structure, which can solve the problem of contact resistance caused by pixel electrodes overlapping the source / drain and occupying part of the pixel area, so that the efficiency of AM-OLED is improved and the aperture ratio is increased. , and the manufacturing process of the TFT backplane structure is simple, and the production efficiency is high

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