Liquid Crystal Display Panel Common Electrode Manufacturing
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Solution Overview
Problem
Liquid crystal display panels with thin film transistors face challenges in efficiently manufacturing common electrodes and pixel electrodes, which are crucial for controlling the liquid crystal layer, often requiring complex and time-consuming processes.
Innovation Solution
The method involves forming a supporting structure using photoresist material layers and grayscale masks to pattern various layers, including metal, insulating, and transparent conducting layers, which reduces manufacturing time by simultaneously forming the supporting structure with other elements and optimizing the electrical conduction and common electrode formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If common electrodes and pixel electrodes are formed using conventional separate processes, then the electrodes can be formed with proper electrical properties, but the manufacturing time and process complexity increase significantly
Solution Approach 1:
The patent combines the formation of common electrodes and pixel electrodes into a single integrated process. A transparent conductive layer is formed across the entire substrate, and then a single-layer insulation layer is formed over it. Pixel electrodes are created by removing the insulation layer at specific locations, while common electrodes are formed on the remaining insulation layer. This merging of previously separate electrode formation processes significantly reduces manufacturing time and process complexity.
2Reliability
If the common electrode resistance is reduced to improve display performance, then the electrical conductivity improves, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The method forms the common electrode and pixel electrodes simultaneously from a single transparent conductive layer, eliminating the need for separate electrode formation processes. This integration maintains low resistance in the common electrode while significantly improving manufacturing efficiency.
Solution Approach 2:
The transparent conductive layer serves multiple functions: it provides the conductive path for common electrodes, forms the base for pixel electrodes, and acts as part of the overall electrode structure. This multi-functionality reduces the need for additional specialized layers and processes.
3Strength
If multiple separate layers are used to form supporting structures, then the structural integrity is maintained, but the manufacturing time increases
Solution Approach 1:
The patent merges multiple supporting structure layers into a single-layer insulation layer that serves multiple purposes. This single layer provides mechanical support, electrical insulation, and structural integrity while being formed in one process step, thereby reducing manufacturing time without compromising strength.
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
This approach reduces the resistance of the common electrode and shortens the manufacturing time for liquid crystal display panels by integrating the supporting structure with other components, enhancing the efficiency of the production process.
Implementation Method 1
forming a supporting structure using photoresist material layers and grayscale masks to pattern various layers
Data Source
AI summary
A liquid crystal display panel includes a thin film transistor substrate and an opposing substrate. The thin film transistor substrate includes a first base substrate, a common electrode formed on the first base substrate, a supporting structure formed on the first base substrate, and an electrical conduction structure formed on the supporting structure and electrically coupled to the common electrode. The opposing substrate includes a second base substrate and a blocking structure arranged on the second base substrate and made of electrical conducting material. The blocking structure is configured to be supported on and electrically coupled to the electrical conduction structure. A liquid crystal layer is formed between the thin film transistor substrate and the opposing substrate.