Pixel Arrangement Structure for Display Brightness Uniformity
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Solution Overview
Problem
The existing pixel arrangement structures in display panels lead to non-uniform display brightness due to different aperture ratios between main and sub-pixel areas, affecting the uniformity of the displayed image.
Innovation Solution
A pixel arrangement structure where each sub-pixel is divided into a main pixel area and a sub-pixel area with alternating positions every one to four columns, and further divided into four pixel domains with equal or unequal areas, with auxiliary electrodes forming a fish-bone pixel electrode, to improve brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the main pixel area and sub-pixel area are arranged in a fixed manner in all columns, then the manufacturing process is simple, but the display brightness uniformity deteriorates due to different aperture ratios at the boundary between main and sub-pixel areas
Solution Approach 1:
The patent applies the dynamics principle by making the pixel arrangement dynamic rather than static. Specifically, the main pixel areas and sub-pixel areas alternate their positions between adjacent columns. In even-numbered columns, the main pixel area is positioned in a certain arrangement, while in odd-numbered columns, the positions are swapped. This dynamic alternation compensates for the aperture ratio differences and achieves uniform display brightness across the panel.
2Ease of manufacture
If the area of main pixel area is different from the area of sub-pixel area to achieve low color shift, then the color display quality is improved, but the display brightness uniformity deteriorates
Solution Approach 1:
The patent applies the asymmetry principle by intentionally creating different areas for main pixel areas and sub-pixel areas to achieve low color shift (LCS) performance. The main pixel area has a larger area than the sub-pixel area, which helps in achieving better color uniformity. However, to compensate for the brightness non-uniformity caused by this asymmetry, the patent combines it with position alternation between columns.
Solution Approach 2:
The patent combines asymmetry with dynamics by maintaining the area difference between main and sub-pixel areas for LCS performance while dynamically alternating their positions between even and odd columns. This position alternation ensures that the boundary effects between different pixel areas are distributed uniformly across the display panel, achieving both color shift correction and brightness uniformity.
Data Source
AI summary
A pixel arrangement structure and a display panel are provided. The pixel arrangement structure includes a plurality of sub-pixels having different colors. Each of the sub-pixels is divided into a main pixel area and a sub-pixel area, an area of the main pixel area is not equal to an area of the sub-pixel area, and at most every four columns, a position of the main pixel area and a position of the sub-pixel area are alternately changed to improve brightness uniformity of a display panel.