Transflective TFT Substrate Brightness Uniformity
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Solution Overview
Problem
Current transflective thin film transistor liquid crystal display panels have poor display effects under strong light and non-uniform brightness between reflective and transmissive areas due to the simultaneous formation of reflective and pixel electrodes in a single patterning process.
Innovation Solution
A manufacturing method for a transflective thin film transistor array substrate involving separate patterning processes for forming gate lines, data lines, reflective electrodes, and common electrodes, with a passivation layer structure of alternating inorganic and organic layers to enhance light transmission and reflection, ensuring uniform brightness across areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If reflective electrodes and pixel electrodes are formed together in one patterning process, then the manufacturing process is simplified, but the display effect under strong light deteriorates and brightness uniformity deteriorates
Solution Approach 1:
The patterning process is divided into two separate steps: first forming the reflective electrode pattern, then forming the pixel electrode pattern. This segmentation allows each electrode type to be optimized independently, resolving the contradiction between process simplicity and brightness uniformity by enabling precise control over each electrode's formation while maintaining a relatively streamlined overall process.
2Ease of manufacture
If reflective electrodes and pixel electrodes are formed together in one patterning process, then the manufacturing process is simplified, but the display effect under strong light deteriorates
Solution Approach 1:
The patterning process is divided into two separate steps: first forming the reflective electrode pattern, then forming the pixel electrode pattern. This segmentation allows each electrode type to be optimized independently, resolving the contradiction between process simplicity and display reliability under strong light by enabling precise control over each electrode's formation while maintaining a relatively streamlined overall process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly improves display effectiveness under strong light conditions by optimizing the formation of reflective and transmissive areas, achieving uniform brightness and reducing light loss through refractive interfaces in the passivation layer.
Implementation Method 1
adopting the half tone or gray tone mask to expose, so as to make the photoresist form a photoresist-totally-removed area, a photoresist-totally-remained area and a photoresist-half-remained area
Data Source
AI summary
The present invention provides a display device, a transflective thin film transistor array substrate and a manufacturing method thereof, the manufacturing method comprises: providing a substrate; forming a gate line, a data line which is broken when passing through a gate line area, a gate electrode, a reflective electrode and a common electrode line; forming a patterned gate insulating layer and an active layer located above the gate insulating layer; forming a pixel electrode, a source electrode, a drain electrode, a connection line of the data line and a channel; forming a passivation layer and a common electrode via hole; forming a common electrode. The present invention can avoid the problem of poor display effect under strong light.