Foldable Display Thermal Plate Structure for Heat Dissipation
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Solution Overview
Problem
Existing display devices face challenges in effectively dissipating heat, particularly in areas subject to bending or folding, which can lead to heat concentration and reduced performance.
Innovation Solution
Incorporating a heat dissipation plate with continuous bending portions and coolant channels that overlap the display panel's areas except the folding area, coupled with support and lower plates to enhance heat dissipation through coolant circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation plate is added to improve heat dissipation performance, then heat dissipation capability is improved, but device complexity and weight increase
Solution Approach 1:
The heat dissipation plate is integrated with the support plate and lower plate to form a unified structure. The bending portions of the heat dissipation plate are coupled to both the support plate and lower plate, merging multiple functions into a single component system that provides both structural support and thermal management.
Solution Approach 2:
The heat dissipation plate with its bending portions is nested between the support plate and lower plate, creating a layered structure where the heat dissipation components are positioned within the existing device architecture rather than adding external structures.
2Temperature
If the heat dissipation plate covers the folding area to improve heat dissipation, then heat dissipation capability is improved, but structural integrity during folding deteriorates
Solution Approach 1:
The heat dissipation plate is divided into distinct regions: bending portions that correspond to the folding area and a flat portion that covers the display areas. The bending portions are specifically designed to flex with the folding motion, segmenting the heat dissipation function between flexible and rigid zones.
Solution Approach 2:
Different portions of the heat dissipation plate have different structural properties. The bending portions have flexibility to accommodate folding, while the flat portion maintains rigidity for effective heat dissipation over the display areas. This local differentiation of mechanical properties resolves the contradiction between heat dissipation coverage and folding reliability.
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
Improves heat dissipation performance by preventing heat concentration, reducing product thickness and weight, and maintaining structural integrity during folding and unfolding.
Implementation Method 1
a first coolant between the bending portion and the support plate
Implementation Method 2
a first flow path between the support plate and the bending portion; and a second flow path between the lower plate and the bending portion
Data Source
AI summary
A display device includes: a display panel having a first area, a folding area, and a second area arranged along a first direction, the folding area being configured to be folded with respect to a folding axis defined along a second direction crossing the first direction; a support plate on a rear surface of the display panel, the support plate having a pattern portion overlapping the folding area; a heat dissipation plate on a rear surface of the support plate, the heat dissipation plate having a continuous bending portion; and a first coolant between the bending portion and the support plate.