Display Panel Pixel Layout With Auxiliary Emitters for Defect Replacement
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Solution Overview
Problem
Existing display panels require a rework process to replace defective light-emitting elements, necessitating spare mounting space and potential substrate wastage.
Innovation Solution
A display panel structure that includes both main and auxiliary light-emitting elements, with a color conversion layer configured to emit a specific color corresponding to defective main elements, allowing for seamless replacement and continued functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rework process is used to replace defective light-emitting elements, then defective elements can be replaced, but spare mounting space is needed and substrate wastage occurs
Solution Approach 1:
The patent applies preliminary action by pre-configuring auxiliary light-emitting elements at specific positions around the main light-emitting elements before any defects occur. These auxiliary elements are positioned in advance at predetermined locations (e.g., four corners) and are ready to immediately replace defective main elements without requiring additional mounting space or substrate modifications. This eliminates the need for spare mounting areas and prevents substrate wastage while ensuring display functionality is maintained.
2Ease of repair
If spare mounting space is allocated for replacement elements, then defective elements can be replaced, but the entire substrate cannot be used
Solution Approach 1:
The patent merges the replacement function into the existing substrate structure by integrating auxiliary light-emitting elements within the same substrate area that already contains the main light-emitting elements. Instead of allocating separate spare mounting space, the auxiliary elements are combined with the main elements in a compact arrangement where the auxiliary elements are positioned at predetermined locations (such as corners) adjacent to the main elements. This merging approach enables easy replacement of defective elements while maximizing substrate area utilization, as no additional substrate area is required beyond what is already used for the main display elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient replacement of defective elements without substrate wastage, maintaining display functionality and improving color reproducibility and power efficiency.
Implementation Method 1
a color conversion layer stacked on the plurality of main light-emitting elements and the auxiliary light-emitting element, wherein the color conversion layer may be configured such that a light emitted from the auxiliary light-emitting element passes through the color conversion layer and has a first color corresponding to a first defective main light-emitting element
Data Source
AI summary
A display panel is disclosed. The display panel comprises: a substrate divided into a plurality of pixel areas; a plurality of main light-emitting elements and an auxiliary light-emitting element mounted in each of the plurality of pixel areas; and a color conversion layer stacked on the plurality of main light-emitting elements and the auxiliary light-emitting element, wherein the color conversion layer is configured such that light emitted from the auxiliary light-emitting element passes through the color conversion layer and, as a result, has a first color corresponding to a defective first main light-emitting element among the plurality of main light-emitting elements.