Display Panel Common Electrode Segmentation for Moire Fringe Elimination
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Solution Overview
Problem
Conventional display devices cannot directly produce depth of field information and often suffer from Moire fringes when displaying three-dimensional images, which degrades the display quality.
Innovation Solution
A display panel design featuring a common electrode with uniformly widthed first and second common electrodes or slits, ensuring even light distribution across pixel areas and electrode wiring, thereby eliminating Moire fringes and enhancing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional display panel structure is used, then the device complexity is low, but Moire fringes appear in the displayed image degrading display quality
Solution Approach 1:
The common electrode is segmented into multiple distinct regions: a first common electrode region overlapping with pixel electrodes and a second common electrode region overlapping with transistor electrodes. This segmentation allows independent optimization of each region's function, enabling the elimination of Moire fringes while maintaining a relatively simple overall structure.
Solution Approach 2:
Different regions of the common electrode are assigned different functions and properties. The first common electrode region is optimized for pixel area coverage while the second common electrode region is optimized for transistor area coverage. This local differentiation resolves the Moire fringe issue by creating appropriate electrical field distributions in different local areas without requiring complete structural redesign.
2Object-affected harmful factors
If the common electrode structure is optimized to eliminate Moire fringes, then the display quality improves, but the manufacturing precision requirements increase
Solution Approach 1:
The first common electrode and second common electrode are merged into a single continuous common electrode layer, which is electrically connected and functions as one integrated component. This merging approach simplifies the manufacturing process by requiring only one deposition step for the common electrode, thereby reducing alignment precision requirements compared to using separate independent electrodes.
Solution Approach 2:
Both the first and second common electrode regions are maintained at the same common electrode potential, creating an equipotential structure. This equipotential design simplifies the electrical connection requirements and reduces the precision needed for electrical alignment, while still achieving the desired Moire fringe elimination through the spatial segmentation of the electrode regions.
Data Source
AI summary
A display panel and a display device are disclosed. Each of pixels in the display panel includes a pixel area; a switch element located near an intersection of a data line and a scan line; a pixel electrode electrically connected to the switch element; and a common electrode located on the first substrate. The common electrode comprises first common electrodes superposing data lines or scan lines and having the same first width; and second common electrodes overlapping with respective pixel areas and having the same second width, the first width is the same as the second width. Alternatively, the common electrode comprises first slits, which have the same first slit width, located above data lines and scan lines, and second slits, which have the same second slit width and are located in respective pixel areas. The first slit width is the same as the second slit width.