Display Panel Repair Line for Bright and Dark Spots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Defective pixel circuits in display panels cause bright or dark spots, which existing technologies struggle to effectively address.
Innovation Solution
A display panel design incorporating a repair pixel circuit electrically connected to a light-emitting element, with a repair line extending from a peripheral area to the display area, and a connection line to a voltage line, allowing for the repair of defective pixel circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a repair circuit is electrically connected to a light-emitting element to replace a defective pixel circuit, then image quality is improved by eliminating bright or dark spots, but device complexity increases due to additional repair lines and connection structures
Solution Approach 1:
A repair line is introduced as an intermediary conductive structure that extends from the peripheral area into the display area, enabling electrical connection between the repair circuit and the light-emitting element. This intermediary pathway allows defective pixel circuits to be replaced by repair circuits without requiring direct modification of the original pixel structure, thereby improving image quality while managing complexity through a dedicated repair pathway.
Solution Approach 2:
The display panel is divided into functional zones: a display area containing pixel circuits and light-emitting elements, and a peripheral area containing repair circuits. The repair line acts as a boundary-crossing connector, segmenting the repair functionality from the display area while maintaining electrical connectivity. This segmentation allows independent repair circuit operation and simplifies the integration of repair functionality.
2Ease of repair
If a repair line extends from the peripheral area to the display area to connect the repair circuit, then ease of repair is improved by enabling external circuit access, but manufacturing precision requirements increase due to the need for precise line alignment and connection
Solution Approach 1:
The repair line is pre-configured during manufacturing to extend from the peripheral area into the display area, establishing a predetermined electrical pathway before any defects occur. This preliminary action ensures that the repair infrastructure is already in place, allowing rapid repair circuit connection without requiring complex post-manufacturing modifications, thereby easing repair while maintaining manufacturing precision through standardized line routing.
Data Source
AI summary
A display panel and an electronic device including the display panel are provided. The display panel includes a pixel circuit disposed in a display area, a light-emitting diode disposed in the display area, a repair circuit disposed in a peripheral area outside of the display area, a repair line extending from the peripheral area to the display area in a first direction, a voltage line extending in the first direction, and a first connection line electrically connecting the repair line to the voltage line.