Common Voltage Line Shielding Layout for Display Heat Reduction
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Solution Overview
Problem
Existing display apparatuses face challenges in optimizing the design of common voltage lines and data lines to enhance display quality and reduce heat generation and current density.
Innovation Solution
The display apparatus incorporates a common voltage supply unit with integrated horizontal and vertical common voltage lines, along with a data line and connection lines, where the common voltage lines cover openings in the connection lines, and are formed as a single body with shielding patterns to improve electrical connectivity and reduce heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If common voltage lines and data lines are arranged separately, then manufacturing is simpler, but heat generation increases and current density is higher
Solution Approach 1:
The patent merges the common voltage line and data line into a single integrated line structure. The common voltage line is formed to extend along the data line, with the data line arranged on one side of the common voltage line, creating a combined structure that reduces the number of separate conductors and thereby reduces heat generation while maintaining ease of manufacture.
2Reliability
If common voltage lines are arranged to cover openings in connection lines, then electrical connectivity is improved, but device complexity increases
Solution Approach 1:
The patent implements a nested arrangement where the common voltage line is positioned to cover or overlap with openings in the connection lines. Specifically, the common voltage line extends in a first direction and the connection lines extend in a second direction, with the common voltage line arranged to cover openings formed by the connection lines, creating a nested structural relationship that improves electrical connectivity without significantly increasing overall device complexity.
3Manufacturing precision
If horizontal and vertical common voltage lines are integrally formed, then manufacturing precision is improved, but heat generation increases
Solution Approach 1:
The patent segments the common voltage supply structure into distinct horizontal and vertical components that are integrally formed. The common voltage line includes a horizontal portion extending in a first direction and a vertical portion extending in a second direction, with the horizontal and vertical portions being integrally formed as a single body. This segmentation allows for precise manufacturing of each segment while the integral formation ensures continuous conductivity and reduces heat generation at junctions.
Data Source
AI summary
A display apparatus includes a substrate comprising a display region and a peripheral region outside the display region, a common voltage supply unit in the peripheral region and surrounding at least a portion of the display region, a common voltage line electrically connected to the common voltage supply unit and comprising a horizontal common voltage line extending in a first direction and a vertical common voltage line extending in a second direction crossing the first direction, a data line in the display region and extending in the second direction, a horizontal connection line in the display region, extending in the first direction, and comprising an opening, and a vertical connection line in the display region, extending in the second direction, and passing through the opening, wherein the common voltage line covers the opening in the horizontal connection line.