Rounded-Corner Display Voltage Mesh for Reduced Border Area
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Solution Overview
Problem
There is a growing demand for display devices that can provide a higher ratio of display area while minimizing non-display areas, particularly in devices that are thin and lightweight, and existing designs often struggle to optimize the arrangement of voltage supply lines and data lines to achieve this.
Innovation Solution
The display device incorporates a design with a first and second display area, featuring a rounded corner portion, and utilizes separate driving voltage lines and demultiplexers arranged in a mesh shape to efficiently distribute driving voltage, reducing the need for additional non-display area by disconnecting some voltage lines from the supply line and using connection lines to form a mesh path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving voltage lines extend to the non-display area to connect to the supply line, then voltage distribution is effective, but the non-display area increases reducing the display area ratio
Solution Approach 1:
The patent transitions from traditional linear extension of voltage supply lines into the non-display area to a mesh-shaped distribution pattern that operates within the display area boundaries. By changing the spatial arrangement from one-dimensional linear extension to two-dimensional mesh distribution, the patent achieves effective voltage delivery without expanding the non-display area, thus resolving the contradiction between voltage distribution effectiveness and minimizing non-display area.
Solution Approach 2:
The patent divides the voltage distribution system into multiple segmented connection lines arranged in a mesh pattern, where each line connects to specific pixel regions. This segmentation allows voltage to be distributed efficiently across different display zones through multiple pathways, maintaining reliability while keeping each individual connection line compact and contained within the display area, thereby preventing expansion into non-display areas.
2Manufacturing precision
If separate driving voltage lines are used for different display areas, then voltage distribution precision is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal mesh-shaped connection line structure that serves multiple functions simultaneously: it distributes voltage to different display areas, provides multiple parallel pathways for current flow, and maintains a compact form factor. This multi-functional design achieves precise voltage distribution across various display regions without requiring separate complex wiring systems for each area, thereby resolving the contradiction between distribution precision and device complexity.
Solution Approach 2:
The patent merges the functions of multiple separate voltage supply lines into a single integrated mesh-shaped connection line structure. By combining what would traditionally be separate lines for different display areas into one unified mesh network, the patent achieves precise voltage distribution to multiple regions while reducing overall structural complexity and simplifying the wiring arrangement.
Data Source
AI summary
A display device includes a display area of various shapes, has a reduced dead space, and displays an image. Further, the display device includes a display unit including a rounded corner portion, a first driving voltage supply line arranged in a first direction in a non-display area on one side of the display unit, a plurality of first driving voltage lines which supplies a driving voltage to a plurality of pixels and is arranged in a second direction that intersects with the first direction and being connected to the first driving voltage supply line, and a plurality of second driving voltage lines disconnected from the first driving voltage supply line.