Liquid Crystal Display Panel Corner Brightness Uniformity
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Solution Overview
Problem
Current round-corner liquid crystal display panels experience differences in brightness and viewing angles at upper and lower corners due to varying light transmittance of main-pixel and sub-pixel regions, leading to suboptimal display effects.
Innovation Solution
A liquid crystal display panel design featuring a display region with a center and edge regions at corners, where pixels with different transmittance levels are arranged symmetrically about a horizontal centerline, with a partial region of these pixels shielded by a black matrix to ensure uniform light transmittance across the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If pixels are arranged in a rectangular array with main-pixel region in upper row and sub-pixel region in lower row, then pixel alignment is achieved, but brightness and viewing angles differ at upper and lower round-corners
Solution Approach 1:
The patent applies asymmetry by intentionally inverting the arrangement of main-pixel and sub-pixel regions in alternating pixels. Specifically, in first pixels the main-pixel region is in the upper row and sub-pixel region in the lower row, while in second pixels the arrangement is inverted (sub-pixel region in upper row, main-pixel region in lower row). This asymmetric arrangement compensates for the non-uniform light transmittance at round-corners, making the shielded regions at upper and lower round-corners substantially the same, thereby achieving uniform brightness and viewing angles across the display panel.
2Shape
If round-corners are designed to improve aesthetics, then display appearance is enhanced, but pixels at round-corners are partially shielded causing brightness differences
Solution Approach 1:
The patent applies local quality by differentiating the arrangement of pixel regions based on their position within the display panel. First pixels (where the main-pixel region is in the upper row) and second pixels (where the sub-pixel region is in the upper row) are arranged differently to specifically address the light transmittance characteristics at round-corners. This localized differentiation ensures that pixels at upper and lower round-corners have substantially the same shielded regions, achieving uniform brightness and viewing angles while maintaining the aesthetic round-corner appearance.
Data Source
AI summary
The present disclosure provides a liquid crystal display panel and a display device. The liquid crystal display panel comprises a display region and a non-display region disposed around the display region, and the display region comprises a center region and edge regions located at four corners of the center region. Pixels in the liquid crystal display panel comprise a main-pixel region and a sub-pixel region, wherein the pixels comprise first pixels intersecting a boundary line between the edge regions and the non-display region, and at least two first pixels are symmetrical about a horizontal centerline. Brightness of an upper portion and a lower portion of the horizontal center line are same in the present disclosure.