Round-Corner Display Repair Circuits for Pixel Color Deviation
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Solution Overview
Problem
Display apparatuses face defects in pixel circuits, leading to reduced display quality and color deviation between pixels, which existing technologies struggle to effectively address.
Innovation Solution
Incorporation of repair circuits and initialization voltage lines in the display apparatus, including first and second light-emitting diode initialization voltage lines connected to transistors of repair circuits, with overlapping connection patterns, to ensure normal operation of defective pixels and reduce color deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repair circuits are added to fix defective pixels, then pixel reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces a repair circuit as an intermediary component that mediates between the power supply network and defective pixels. The repair circuit receives initialization voltages through dedicated voltage lines and selectively applies them to compensate for pixel defects, thereby improving reliability without requiring fundamental changes to the pixel structure itself.
Solution Approach 2:
The patent segments the power supply network by introducing separate first and second light-emitting diode initialization voltage lines that extend to the peripheral area. This segmentation allows independent control and initialization of different pixel groups, enabling targeted repair operations while keeping the overall system manageable despite increased complexity.
2Manufacturing precision
If multiple initialization voltage lines are used to reduce color deviation, then display quality is improved, but manufacturing complexity increases
Solution Approach 1:
The patent resolves the manufacturing complexity by transitioning to a multi-layer configuration. The first and second light-emitting diode initialization voltage lines are arranged on different layers, allowing them to extend in the same direction without physical interference. This dimensional separation simplifies the manufacturing process compared to routing multiple lines through the same plane, while still achieving the goal of reducing color deviation through differentiated voltage initialization.
Data Source
AI summary
A display apparatus includes a display area including a round corner portion, a peripheral area including a first side peripheral area, a second side peripheral area, and a corner peripheral area located between the first side peripheral area and the second side peripheral area, the peripheral area surrounding the display area, a first repair circuit in the first side peripheral area, a second repair circuit in the round corner peripheral area, and first and second light-emitting diode initialization voltage lines, wherein the first light-emitting diode initialization voltage line extends from the display area to the first side peripheral area and is electrically connectable to a transistor of the first repair circuit, and the second light-emitting diode initialization voltage line extends from the display area to the first side peripheral area and is electrically connectable to the transistor of the first repair circuit.