Display Panel Wiring Layout for Narrow-Bezel Non-Display Areas
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Solution Overview
Problem
Existing display devices have a significant non-display area that is not utilized for image display, which limits the overall efficiency and versatility of these devices.
Innovation Solution
The display device incorporates a reduced non-display area by strategically arranging the common voltage supply line, driving voltage supply line, and seal portion in a direction away from the display area, while maintaining the performance of the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the non-display area is reduced to increase display area, then the display area increases, but the arrangement of wiring lines and circuits becomes more difficult
Solution Approach 1:
The patent transitions from a planar arrangement to a three-dimensional stacked structure by arranging the common voltage supply line, driving voltage supply line, and seal portion at different vertical levels (depths) within the non-display area. This vertical stacking allows multiple components to coexist in a limited space without horizontal overlap, resolving the conflict between reducing non-display area and maintaining proper component arrangement.
Solution Approach 2:
The patent implements a nested arrangement where the common voltage supply line, driving voltage supply line, and seal portion are positioned concentrically or in nested layers within the non-display area. The common voltage supply line is arranged first, followed by the driving voltage supply line, and then the seal portion, creating a compact nested structure that maximizes space utilization.
2Length of moving object
If the non-display area is reduced, then the overall device size decreases, but the electrical signal transmission becomes more challenging
Solution Approach 1:
By arranging electrical connection components at different vertical levels (depths) rather than spreading them horizontally, the patent maintains adequate spacing for electrical signal transmission while reducing the horizontal footprint of the non-display area. This vertical dimensionality allows signal transmission paths to remain intact without compromising reliability.
Solution Approach 2:
The patent pre-arranges the common voltage supply line, driving voltage supply line, and seal portion in a specific stacked sequence before final assembly. This preliminary positioning ensures that electrical connection paths are established in advance, preventing signal transmission issues that might arise from cramped or disorganized wiring in a reduced non-display area.
3Productivity
If the non-display area is minimized, then the display efficiency increases, but the arrangement of multiple supply lines becomes more complex
Solution Approach 1:
The patent resolves the complexity of arranging multiple supply lines by stacking them vertically at different depths within the non-display area. The common voltage supply line, driving voltage supply line, and seal portion are positioned at distinct vertical levels, eliminating the need for complex horizontal routing and simplifying the overall arrangement while maximizing display area.
Solution Approach 2:
The patent employs a nested arrangement where supply lines and sealing structures are positioned in concentric or layered fashion within the non-display area. This nested structure naturally organizes multiple components in a systematic manner, reducing arrangement complexity while maintaining optimal spacing for electrical connections.
Data Source
AI summary
A display device includes a substrate including a display area and a non-display area; pixels arranged in the display area, each of the pixels including a pixel circuit and a light-emitting diode; a driving voltage supply line arranged in the non-display area, the driving voltage supply line supplying a driving voltage to the pixels; a common voltage supply line arranged in the non-display area and electrically connected to an opposite electrode of the light-emitting diode to supply a common voltage; and a seal portion surrounding the display area. The common voltage supply line, the driving voltage supply line, and the seal portion are arranged in a direction away from the display area in an order of the common voltage supply line, the driving voltage supply line, and the seal portion.