Display Device Non-Display Area Pixel Optimization
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Solution Overview
Problem
Existing display devices face challenges in optimizing the non-display area without enlarging it, particularly in deformed display panels with irregular shapes, where the design of pixels and electrodes affects the driving area and opening area efficiency.
Innovation Solution
The display device incorporates a substrate with a display area and a non-display area, where the first and second pixels have different areas, and pixel electrodes and common electrodes with varying lengths and shapes, allowing for the removal of some electrodes in the second pixel to increase the driving area in the non-display area without enlarging it, and optimizing the opening area by changing the shape of pixels and electrodes at the boundary line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the non-display area is enlarged to provide more driving area, then the driving area is increased, but the display area is reduced and the overall device size increases
Solution Approach 1:
The patent applies local quality by making pixels in the non-display area have different characteristics from pixels in the display area. Specifically, pixels in the non-display area have reduced or removed electrode structures (pixel electrodes and/or common electrodes) compared to full pixels in the display area, allowing the non-display area to serve dual purposes: maintaining display function where needed while providing space for driving circuits.
Solution Approach 2:
The patent makes the non-display area multi-functional by incorporating pixels that can serve both as display elements and as driving area for circuits. The partial pixels in the non-display area allow the same physical space to contribute to both display output and circuit placement, eliminating the need to enlarge the overall device.
2Reliability
If pixels in the non-display area have the same area as pixels in the display area, then the display quality is maintained, but the driving area is insufficient
Solution Approach 1:
Different pixel configurations are used in different areas: full pixels with complete electrode structures are used in the display area to maintain display quality, while partial pixels with reduced electrode structures are used in the non-display area to provide driving space, with each area optimized for its specific function.
Solution Approach 2:
The pixel structure is segmented into essential display components and optional electrode components. By selectively removing or reducing certain electrode structures in non-display area pixels, the patent creates a segmented approach where only the necessary display functionality is maintained while freeing up space for driving circuits.
3Illumination intensity
If the opening area is maximized, then the display brightness is improved, but the margin area is reduced and design flexibility is limited
Solution Approach 1:
The patent employs dynamic design flexibility by making the pixel electrode and common electrode structures adjustable and configurable. The electrodes can be selectively removed or modified in the non-display area, allowing the design to be dynamically adapted to different driving area requirements while maintaining optimal opening area for display brightness in the display area.
Data Source
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AI summary
A display device may comprise a substrate (SUB) which includes a display area (AA) including a first pixel and a non-display area (NA) including a second pixel, a first data line which is disposed on the substrate (SUB) and applies a data signal to the first pixel, a second data line which is disposed on the substrate (SUB) and applies a data signal to the second pixel and a gate line which is disposed on the substrate (SUB) and applies gate signals to the first pixel and the second pixel at the same timing, wherein the first pixel and the second pixel have different area from each other.