Inorganic LED Display Pixel Layout Without Circuit Overlap
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Solution Overview
Problem
Conventional inorganic LEDs face limitations in manufacturing processes and durability, while OLEDs have lower blue light efficiency and are less durable in high-temperature environments.
Innovation Solution
A display device design featuring inorganic light emitting elements with a semiconductor core, separated light emitting and non-light emitting areas, and specific wiring and electrode configurations to enhance durability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic LEDs are used to improve durability and blue light efficiency, then manufacturing process complexity increases
Solution Approach 1:
The patent divides the display device into distinct light emitting areas and non-light emitting areas, with circuit elements confined to the non-light emitting areas. This segmentation allows inorganic LEDs to be used in the light emitting areas without requiring complex integration of circuit elements within the same pixel area, thereby simplifying the manufacturing process while maintaining durability benefits.
Solution Approach 2:
The patent utilizes the thickness direction (z-axis) to separate circuit elements from light emitting elements. By positioning circuit elements in the non-light emitting areas and light emitting elements in the light emitting areas, the patent resolves manufacturing complexity issues without compromising the durability advantages of inorganic LEDs.
2Area of stationary object
If light emitting elements and circuit elements are integrated in the same pixel area, then device area is reduced, but manufacturing complexity and reliability increase
Solution Approach 1:
The patent segments each pixel into a light emitting area containing only light emitting elements and a non-light emitting area containing only circuit elements. This spatial segmentation prevents interference between circuit elements and light emitting elements, thereby improving device reliability while maintaining compact pixel dimensions through efficient area utilization.
3Device complexity
If circuit elements overlap with light emitting areas, then device complexity is reduced, but manufacturing precision and reliability deteriorate
Solution Approach 1:
The patent implements strict spatial segmentation where light emitting elements are confined to light emitting areas and circuit elements are confined to non-light emitting areas. This segmentation eliminates the need for precise overlap alignment between circuit elements and light emitting elements, thereby improving manufacturing precision while maintaining relatively simple device structure.
Data Source
AI summary
A display device comprises: a first voltage wiring line extending in a first direction; a data line spaced apart from the first voltage wiring line and extending in the first direction; a scan line extending in a second direction crossing the first direction; a sensing line spaced apart from the scan line and extending in the second direction; a first internal bank and a second internal bank arranged on the first voltage wiring line and the data line, extending in the first direction and being spaced apart from each other while facing each other; a first electrode arranged on the first internal bank and extending in the first direction; a second electrode arranged on the second internal bank and extending in the first direction; and a plurality of light emitting elements arranged between the first electrode and the second electrode.