Asymmetric Pixel Structure for Uniform Brightness and Leakage Control
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Solution Overview
Problem
Existing SPR pixel designs fail to achieve uniform brightness distribution and are prone to light leakage in the dark state due to sub-pixel inclination and large bending angles of data lines, which affects the display's aperture ratio and visual effect.
Innovation Solution
A pixel structure with alternately arranged first and second array sections, each comprising sub-pixels of specific parallelogram shapes with short sides aligned in a particular direction, ensuring uniform brightness distribution and minimizing data line bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sub-pixels are inclined to facilitate data line arrangement, then data line routing is simplified, but brightness centers are not uniformly distributed and light leakage occurs in dark state
Solution Approach 1:
The patent employs asymmetric sub-pixel inclination angles in alternating rows. Specifically, odd-numbered rows have sub-pixels inclined at an angle θ1 relative to the horizontal direction, while even-numbered rows have sub-pixels inclined at an angle θ2, where θ1 ≠ θ2. This asymmetric arrangement compensates for the displacement caused by inclination, ensuring that brightness centers remain uniformly distributed across the pixel array while still allowing data lines to be routed efficiently along the inclination direction.
2Ease of manufacture
If sub-pixels are inclined for data line arrangement, then data line routing is easier, but light leakage occurs in dark state due to large bending angle
Solution Approach 1:
By using different inclination angles for odd and even rows, the patent reduces the effective bending angle of data lines. The asymmetric arrangement allows data lines to follow a more gradual path through the pixel array, minimizing sharp bends that would cause light leakage in the dark state while still facilitating efficient data line routing.
3Manufacturing precision
If brightness centers are uniformly distributed, then visual effect is improved, but sub-pixel arrangement becomes complex
Solution Approach 1:
The patent achieves uniform brightness center distribution through a relatively simple asymmetric pattern where only the inclination angle varies by row. This is much simpler than arbitrary complex arrangements, as it maintains regularity in the alternating row pattern while achieving the desired uniformity of brightness centers across the entire pixel array.
Data Source
AI summary
The present application discloses a pixel structure, an array substrate and a display device comprising the same. The pixel structure comprises a pixel array comprising a first array section and a second array section alternatively arranged along a first direction; the first array section comprises at least one first pixel sequence extending along a second direction and at least one second pixel sequence extending along the second direction; the second array section comprises at least one third pixel sequence extending along the second direction and at least one fourth pixel sequence extending along the second direction. According to the present application, the brightness centers are uniformly distributed in the pixel array, thereby resulting in a more uniform brightness and a reduction of the sub-pixels' dark state light leakage when an image is displayed.