Flexible Display Heat Transfer Patterns and Lines
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Solution Overview
Problem
Current display devices face challenges in effectively dissipating heat and maintaining temperature uniformity, particularly in flexible and stretchable configurations, which can impact reliability and signal transmission.
Innovation Solution
A display device with a flexible substrate divided into areas, featuring heat transfer patterns overlapping pixels, heat transfer lines, and a trench structure, along with a heat transfer gel for enhanced heat dissipation and temperature compensation, and a voltage sensing and feedback circuit for maintaining optimal pixel temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat transfer patterns are added to overlap pixels, then heat dissipation effect is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into the heat transfer patterns: they serve as both electrical connection elements and thermal management elements. The patterns are integrated into the existing pixel structure rather than being added as separate components, thus improving heat dissipation while minimizing the increase in device complexity.
Solution Approach 2:
The heat transfer patterns perform multiple functions simultaneously: they provide electrical connectivity for signal transmission and act as thermal conduction pathways for heat dissipation. This multi-functionality allows the same structural element to address both electrical and thermal requirements, reducing the need for additional dedicated components.
2Temperature
If heat transfer lines are added to connect heat transfer patterns, then temperature compensation is improved, but device complexity increases
Solution Approach 1:
The heat transfer lines are integrated with the existing connection line structure in the display device. Rather than being completely separate components, they are merged with the electrical connection network, allowing thermal compensation functionality to be added while reusing existing structural pathways and minimizing additional complexity.
3Temperature
If heat transfer gel is used between heat transfer patterns and pixels, then heat dissipation effect is improved, but manufacturing precision requirements increase
Solution Approach 1:
The heat transfer gel acts as an intermediary material between the heat transfer patterns and the pixels. This mediator provides thermal conduction while accommodating manufacturing tolerances and surface irregularities, ensuring effective thermal contact without requiring extremely high manufacturing precision. The gel fills gaps and conforms to surface variations.
4Temperature
If voltage feedback circuit is added for temperature compensation, then temperature control is improved, but device complexity increases
Solution Approach 1:
The patent implements a voltage feedback circuit that monitors the voltage across heat transfer patterns (which correlates with temperature) and adjusts the driving voltage accordingly. This feedback mechanism enables automatic temperature compensation, maintaining optimal pixel temperatures dynamically. The feedback control is integrated into the existing driving circuitry, allowing temperature management without requiring completely separate control systems.
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
The solution effectively dissipates heat from pixels, improves temperature uniformity, enhances signal transmission reliability, and maintains flexibility and reliability of connection lines.
Implementation Method 1
the heat transfer gel disposed between the plurality of heat transfer patterns and the plurality of pixels
Implementation Method 2
a plurality of heat transfer patterns disposed in the first area of the flexible substrate and configured to overlap the plurality of pixels, respectively... a plurality of heat transfer lines disposed in the second area of the flexible substrate and connected to the plurality of heat transfer patterns, respectively, thereby effectively compensating for a temperature of the display device
Data Source
AI summary
A display device according to an embodiment of the present disclosure includes a flexible substrate configured to be stretchable and divided into a first area, a second area, and a third area. The display device includes a plurality of pixels disposed in the first area of the flexible substrate. The display device includes a plurality of heat transfer patterns disposed in the first area of the flexible substrate and configured to overlap the plurality of pixels, respectively. The display device includes a plurality of connection lines disposed in the second area of the flexible substrate and connected to the plurality of pixels, respectively. The display device includes a plurality of heat transfer lines disposed in the second area of the flexible substrate and connected to the plurality of heat transfer patterns, respectively, thereby effectively compensating for a temperature of the display device.