Vertically Stacked Pixel Structure for LED Repair
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Solution Overview
Problem
Conventional light-emitting diode (LED) repairing methods in display panels are complex, time-consuming, and costly, especially when LEDs are damaged or deviated, leading to dark spots and decreased display quality.
Innovation Solution
A pixel structure with vertically stacked light-emitting elements, where a second light-emitting element overlaps with a portion of the first light-emitting element, allowing for repair without removing the damaged element, simplifying the process and reducing manufacturing costs by forming signal lines across the board to reconnect the active device layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional repairing method replaces damaged light-emitting diodes one by one, then display quality is improved, but manufacturing complexity increases and production time extends
Solution Approach 1:
The pixel structure is divided into multiple light-emitting elements arranged in different directions (first light-emitting elements in first direction, second light-emitting elements in second direction). This segmentation allows selective replacement of only the damaged elements rather than replacing all elements, thereby improving display quality while reducing repair complexity and time.
Solution Approach 2:
The patent introduces a vertical stacking dimension by arranging light-emitting elements in multiple directions (first direction and second direction perpendicular to each other). This multi-dimensional arrangement enables more flexible repair strategies where damaged elements can be replaced independently along different directional axes, reducing the overall repair process complexity while maintaining display quality.
2Reliability
If conventional repairing method replaces damaged light-emitting diodes one by one, then display quality is improved, but production time increases
Solution Approach 1:
By segmenting the pixel structure into multiple independently controllable light-emitting elements in different directions, the repair process can target only the specific damaged elements rather than replacing all elements sequentially. This segmentation enables parallel processing capabilities and reduces the overall repair time while maintaining display quality.
Solution Approach 2:
The patent implements partial action by replacing only the necessary damaged light-emitting elements rather than replacing all elements in the pixel structure. This partial replacement approach significantly reduces production time and increases productivity while still achieving the required display quality through selective repair of defective components.
3Reliability
If conventional repairing method replaces damaged light-emitting diodes one by one, then display quality is improved, but manufacturing cost increases
Solution Approach 1:
The segmented pixel structure with light-emitting elements arranged in multiple directions allows for selective replacement of only the damaged portions. This reduces material waste and manufacturing costs compared to replacing entire pixel structures, while still achieving improved display quality through targeted repairs of defective elements.
Solution Approach 2:
The patent enables discarding and recovering by allowing selective replacement of only the damaged light-emitting elements while retaining functional elements. This approach recovers the value of working components and reduces manufacturing costs by avoiding the need to discard and replace entire pixel structures, thereby improving display quality in a cost-effective manner.
Data Source
AI summary
A pixel structure includes a substrate, an active device layer, a first insulating layer disposed on the active device layer, a first light emitting element and a second light emitting element disposed on the first insulating layer, a plurality of first signal lines disposed on the first insulating layer, and a plurality of second signal lines. The first signal lines are electrically connected to the active device layer, and the first signal lines are electrically insulated from the first light emitting element. The second signal lines are electrically connected to the first signal lines and the second light emitting element. The second light emitting element overlaps with a portion of the first light emitting element in a first direction. Electrodes of the first light emitting element and electrodes of the second light emitting element are disposed facing the first direction. A repairing method of the pixel structure is also provided.