Transparent LED Matrix Wiring Layout for Higher Display Transparency
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Solution Overview
Problem
In-vehicle LED display devices with arrayed light-emitting elements suffer from reduced transparency due to the presence of highly-conductive chip components at wire intersections, which degrade visibility when viewed through the display region.
Innovation Solution
A display device featuring a transparent circuit board with light-emitting elements arrayed in matrix, where row and column wires are formed on different surfaces at intersections, reducing the number of components and enhancing transparency by overlapping wire pairs on the circuit board surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chip components (jumpers) are used at wire intersections to connect row and column wires, then electrical connectivity is ensured, but transparency of the display region is degraded
Solution Approach 1:
The patent extracts and eliminates the chip components (jumpers) from the wire intersection areas. Instead of using separate components to connect row and column wires, the invention integrates the wiring directly into the transparent substrate, removing the obstructive elements while maintaining electrical connectivity through conductive patterns formed on the transparent board.
Solution Approach 2:
The patent replaces the mechanical chip component system with an integrated conductive pattern system. Instead of physically mounting discrete jumpers at wire intersections, the invention uses conductive traces and patterns directly formed on the transparent substrate to achieve the same electrical connection function, thereby eliminating the transparency-blocking mechanical components.
2Adaptability or versatility
If multiple wires are routed on the same surface, then routing flexibility is improved, but component density and transparency are reduced
Solution Approach 1:
The patent utilizes the third dimension (depth/thickness) of the transparent substrate by routing different wire groups on opposite surfaces. Row wires are routed on the front surface while column wires are routed on the rear surface, allowing both sets of wires to coexist without intersecting on the same plane. This dimensional separation maintains routing flexibility while eliminating the need for additional components at intersections.
Data Source
AI summary
A display device includes: a transparent circuit board and a plurality of light-emitting elements arrayed in matrix on the transparent circuit board, the light-emitting elements each including a pair of terminals which drive voltage for light emission is applied, the circuit board including a plurality of row wires each connecting ones of the pairs of terminals of ones of the light-emitting elements to each other, the ones of the light-emitting elements belonging to a same one of rows in the matrix array, and a plurality of column wires each connecting other ones of the pairs of terminals of ones of the light-emitting elements to each other, the ones of the light-emitting elements belonging to a same one of columns in the matrix array, the plurality of row wires and the plurality of column wires being formed on different surfaces of the circuit board.