Shared Auxiliary Subpixel Layout for High-Resolution Display Repair
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Solution Overview
Problem
Current display devices face challenges in reducing the number of light emitting diodes required for repair, increasing manufacturing costs, and achieving high resolution due to the need for separate auxiliary sub pixels and complex positioning programming.
Innovation Solution
A display device design where two adjacent sub pixels share a single auxiliary sub pixel, eliminating the need for separate pixel circuits in the auxiliary sub pixel and allowing for a common power line and connection patterns to drive the shared sub pixel, reducing the number of light emitting diodes and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If separate auxiliary sub pixels are provided for each sub pixel to enable repair functionality, then repair capability is improved, but the number of light emitting diodes increases and manufacturing cost increases
Solution Approach 1:
The patent merges the auxiliary sub pixel functionality into a shared configuration where one auxiliary sub pixel serves multiple sub pixels. Specifically, the auxiliary sub pixel is positioned at a vertex where multiple pixel regions meet, allowing it to be shared by multiple adjacent sub pixels, thereby reducing the total number of light emitting diodes while maintaining repair capability
Solution Approach 2:
The auxiliary sub pixel is designed with multi-functionality to serve multiple purposes. It can replace any of the adjacent sub pixels that require repair, and the pixel circuit can be reconfigured through programming to direct the auxiliary sub pixel to replace different target sub pixels based on which one is defective
2Ease of operation
If separate pixel circuits are placed in auxiliary sub pixels to enable independent driving, then driving capability is improved, but the design area is reduced and manufacturing complexity increases
Solution Approach 1:
The pixel circuit is designed as a shared resource that can drive multiple sub pixels including the auxiliary sub pixel. The circuit includes switching elements that can be programmed to connect the pixel circuit to different sub pixels as needed, eliminating the need for separate pixel circuits in each auxiliary sub pixel while maintaining full driving capability
Solution Approach 2:
The patent merges the pixel circuit functionality into a shared configuration where a single pixel circuit serves multiple sub pixels. The circuit is positioned to access multiple sub pixel regions and uses programming-controlled switching to direct signals to the appropriate sub pixel or auxiliary sub pixel, reducing overall circuit count and design area
3Ease of manufacture
If auxiliary sub pixels are positioned to share between multiple sub pixels, then manufacturing cost is reduced, but separate position programming is required which increases complexity
Solution Approach 1:
The patent implements preliminary positioning of the auxiliary sub pixel at a vertex location where multiple pixel regions converge. This pre-positioning strategy anticipates future repair needs by placing the auxiliary element in a location that is naturally accessible to multiple sub pixels, reducing the need for complex repositioning or programming later
Data Source
AI summary
A display device includes a substrate which includes a plurality of sub pixels including a first sub pixel, a second sub pixel, and a sharing sub pixel disposed between the first sub pixel and the second sub pixel, a plurality of transistors which is disposed in the first sub pixel and the second sub pixel, among the plurality of sub pixels, a common power line which is disposed at one sides of the first sub pixel, the second sub pixel, and the sharing sub pixel to apply a common power to the first sub pixel, the second sub pixel, and the sharing sub pixel and a plurality of connection patterns which is connected to the plurality of transistors, respectively, to be disposed at the other sides of the first sub pixel and the second sub pixel, and is spaced apart from each other.