Pixel Array Alignment for Curved Display Panels
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Solution Overview
Problem
Curved display panels face issues with misalignment during manufacturing, leading to unfavorable display quality in certain regions due to the assembly and bending of substrates, which affects the alignment of components and subsequently the display performance.
Innovation Solution
A pixel array design with a specific arrangement of scan lines, data lines, and active devices, along with a light shielding pattern layer, is implemented to ensure proper alignment and prevent misalignment-related display quality issues in curved display panels. This design includes a substrate with multiple pixel regions and a color filter layer, where the scan lines and data lines are strategically connected and overlapped to facilitate diverse gate driving chip selection and maintain display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two planar substrates are assembled and bent to form curved surfaces, then the display panel can be adapted to non-planar surfaces, but the components on the substrates become misaligned and display quality deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-designing the pixel array with overlapping data lines and bar-shaped pixel electrodes with bent portions before the bending process. This preliminary configuration ensures that when the substrates are bent, the overlapping regions maintain proper alignment despite the curvature, preventing misalignment issues in the final curved display panel
Solution Approach 2:
The patent implements local quality by creating specific overlapping regions where data lines overlap with pixel electrodes in certain areas of the pixel array. This localized overlapping structure is strategically designed to compensate for alignment shifts that occur during bending, ensuring that critical regions maintain proper alignment while allowing other areas to adapt to the curved geometry
2Shape
If substrates are bent to form curved display panels, then curved surfaces can be achieved, but component alignment is affected and display performance deteriorates
Solution Approach 1:
The pixel array is pre-configured with overlapping data lines and bent pixel electrode portions before bending. This preliminary design ensures that when the display panel is curved, the overlapping regions maintain proper alignment, preserving display performance in the curved configuration
Solution Approach 2:
The overlapping structure of data lines with pixel electrodes creates a buffer zone that compensates for alignment shifts during bending. This beforehand cushioning design ensures that even when substrates are bent, the display performance is maintained because the overlapping regions provide tolerance for alignment variations
Data Source
AI summary
A pixel array includes pixel unit sets each including a substrate having first and second pixel regions, a scan line, first and second data lines extending along a second direction, first and second active devices respectively in the first and second pixel regions, and first and second pixel electrodes respectively located in the first and second pixel regions and electrically connected to the first and second active devices, respectively. The scan line includes a main scan line and first and second branch scan lines (connected to the main scan line) extending along a first direction. The first active device is electrically connected to the first branch scan line and the first data line. The second active device is electrically connected to the second branch scan line and the second data line. At least one of the first and second data lines is overlapped with the first and second pixel electrodes.