Shared Pixel Electrode Layout for Display Heat Dissipation
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Solution Overview
Problem
Display devices face challenges in effectively dissipating heat generated by light-emitting elements, particularly due to the complexity of voltage wire arrangements and the need for efficient heat release mechanisms.
Innovation Solution
The display device incorporates a design where first and second pixels share the same voltage wires, with electrodes and light-emitting elements arranged symmetrically to facilitate heat dissipation, including a wire extension portion that protrudes to enhance thermal conductivity and release heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If light-emitting elements are disposed asymmetrically with respect to voltage wires, then manufacturing is simpler, but heat dissipation is insufficient
Solution Approach 1:
The patent applies asymmetry principle by intentionally designing the voltage wire arrangement to be asymmetric with respect to the light-emitting elements. Specifically, the first voltage wire is positioned at a first distance from the light-emitting element while the second voltage wire is positioned at a second distance, creating an asymmetric configuration that enables effective heat dissipation pathways while maintaining electrical functionality.
2Reliability
If each pixel has dedicated voltage wires, then electrical connection is more reliable, but device complexity increases
Solution Approach 1:
The patent applies merging principle by having adjacent pixels share common voltage wires. The first voltage wire serves both the first pixel and the second pixel, reducing the total number of voltage wires required. This shared configuration maintains reliable electrical connections while simplifying the overall device structure and reducing manufacturing complexity.
3Length of moving object
If voltage wires are positioned close to light-emitting elements, then electrical connection is shorter, but heat dissipation is reduced
Solution Approach 1:
The patent applies local quality principle by creating different spatial relationships between voltage wires and light-emitting elements in different regions. The asymmetric positioning ensures that at least one voltage wire is positioned at an optimized distance for heat dissipation, while maintaining appropriate electrical connection lengths. This localized optimization allows simultaneous achievement of good electrical connection and effective heat management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for improved heat dissipation from light-emitting elements, reducing thermal issues and enhancing the operational stability of the display device.
Implementation Method 1
a wire extension portion spaced apart from the first electrodes, the wire extension portion being at least a portion of the second voltage wire that protruding toward the first electrodes
Data Source
AI summary
A display device includes a first pixel and a second pixel adjacent to each other in a first direction, first voltage wires disposed in the first pixel and the second pixel in a second direction, a second wire disposed along a boundary between the first pixel and the second pixel in the second direction, first electrodes disposed between the first voltage wires and the second wire in the first pixel an the second pixel, a second electrode disposed between and spaced apart from the first electrodes in the first pixel and the second pixel, and light-emitting elements disposed at each of the first pixel and the second pixel and disposed on the first electrodes and the second electrode, wherein the first voltage wires, the first electrodes, and the light-emitting elements are symmetric with respect to the second wire.