Pixel Circuit Layout Across Recess Patterns for Impact-Resistant Displays
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Solution Overview
Problem
Display devices are vulnerable to external impacts, necessitating a robust structure that allows for the design of a pixel circuit while maintaining durability.
Innovation Solution
A display device design featuring a recess pattern between adjacent pixels, with semiconductor layers overlapping the recess pattern to provide structural robustness and enable efficient pixel circuit design, including transistors and light-emitting elements connected via semiconductor connection patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a compact pixel circuit design is implemented, then the area occupied by each pixel is reduced, but the structure becomes more vulnerable to external impacts
Solution Approach 1:
The pixel structure is segmented by introducing a recess pattern between adjacent pixels, dividing the pixel region into distinct zones. This segmentation allows the pixel circuit to be designed in a compact manner within the pixel region while the recess pattern provides structural separation and impact resistance, resolving the contradiction between compact design and durability.
Solution Approach 2:
The recess pattern extends in the thickness direction (vertical dimension) between adjacent pixels, adding a vertical structural element without increasing the horizontal pixel area. This dimensional approach allows compact pixel circuits while providing robust structural support against external impacts through the vertically extending recess pattern.
2Reliability
If a robust structure against external impacts is designed, then the durability is improved, but the space for pixel circuit design is reduced
Solution Approach 1:
The recess pattern is strategically positioned between adjacent pixels rather than uniformly across the entire display structure. This localized structural feature provides impact resistance precisely where needed at pixel boundaries while leaving the interior pixel regions available for circuit design, thus maintaining design space while improving durability.
Solution Approach 2:
The recess pattern acts as an intermediary structural element between adjacent pixels, providing mechanical support and impact resistance without directly interfering with the pixel circuit design space. This intermediary structure resolves the contradiction by mediating between the requirements for durability and circuit design flexibility.
3Reliability
If the recess pattern is positioned to overlap the semiconductor layer, then the structural robustness is enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The recess pattern is formed in advance during the manufacturing process, creating a predetermined structural feature that guides subsequent layer formation. By establishing the recess pattern early, the alignment between the recess pattern and semiconductor layer can be controlled through the manufacturing process itself, reducing the actual alignment precision requirements during assembly.
Data Source
AI summary
A display device includes a first pixel, a second pixel disposed adjacent to the first pixel, and a recess pattern traversing between the first pixel and the second pixel when viewed from top. Each of the first pixel and the second pixel includes a first supply voltage line, a light-emitting element, a first transistor connected between the first supply voltage line and the light-emitting element, a second transistor connected between the first transistor and the light-emitting element, and a third transistor connected to the light-emitting element. The display device further includes a first semiconductor layer defining a channel of each of the first transistor, the second transistor, and the third transistor. The second transistor of the first pixel is connected to the third transistor of the second pixel via the first semiconductor layer. The first semiconductor layer overlaps the recess pattern between the first pixel and the second pixel.