Curved Electrode Array Substrate for Liquid Crystal Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ADS liquid crystal panels face challenges in achieving high transmittance and wide viewing angles due to the attenuation of the electric field by insulating layers around sub-pixel areas and the limited strength of the electric field between common and pixel electrodes, which affects light penetration.
Innovation Solution
An array substrate design featuring a base substrate with a sub-pixel region containing a first and second electrode, where at least one electrode has a curved surface, and a first insulating layer between them, increasing the surface area and enhancing the electric field strength, particularly at the edges of sub-pixel regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If planar common electrodes and pixel electrodes are used in ADS liquid crystal display, then the device structure is simple and easy to manufacture, but the electric field strength between electrodes is insufficient especially at edges, resulting in poor light transmittance
Solution Approach 1:
The patent applies curvature by forming the common electrode and/or pixel electrode with a curved surface instead of a planar surface. This curved structure increases the surface area of the electrodes and enhances the electric field strength, particularly at the edges of sub-pixel areas, thereby improving light transmittance while maintaining manufacturing feasibility through standard photolithography and etching processes.
Solution Approach 2:
The patent transitions from a two-dimensional planar electrode structure to a three-dimensional curved electrode structure. By introducing the vertical dimension through curvature, the electrode surface area is increased without expanding the horizontal footprint, thereby enhancing electric field strength and light transmittance while maintaining the same device footprint and manufacturing process compatibility.
2Ease of manufacture
If insulating layers are distributed over gate lines and data lines around sub-pixels, then the electrode structures are well-defined and manufacturable, but the electric field formed between common and pixel electrodes is attenuated, reducing display performance
Solution Approach 1:
The curved surface structure of the common electrode and/or pixel electrode compensates for the electric field attenuation caused by the insulating layers. The increased surface area and enhanced curvature at edge regions strengthen the electric field in areas where it would otherwise be weakened by the insulating layer distribution, thereby maintaining display performance despite the presence of gate and data line insulating structures.
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 design enhances the effective electric field applied to liquid crystals, improving light transmittance and display quality in sub-pixel areas by increasing the strength of the electric field between the electrodes.
Implementation Method 1
a multi-dimensional electric field is formed with both an electric field produced at edges of slit electrodes on the same plane and an electric field produced between a slit electrode layer and a planar common electrode layer
Data Source
AI summary
An array substrate includes: a base substrate; a sub-pixel region on the base substrate in which a first electrode and a second electrode are disposed; and a first insulating layer between the first electrode and the second electrode for insulating the first electrode and the second electrode. One of the first electrode and the second electrode is a common electrode and the other is a pixel electrode. A surface of at least one of the first electrode and the second electrode is a curved surface. The array substrate is intended to provide a liquid crystal panel and a display device with high light transmittance in sub-pixel regions. A manufacturing method of an array substrate is further disclosed.