Rollable Display Panel Heat Pipe Layout for Thermal Dissipation
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Solution Overview
Problem
Existing display devices face challenges in effectively diffusing and releasing heat generated during operation, particularly in rollable display panels, where conventional heat dissipation methods like heat dissipation sheets may not suffice due to interference with bending and rolling.
Innovation Solution
Incorporation of a heat pipe at a non-rolling area of the display panel, in contact with a metal layer, to efficiently dissipate heat while maintaining the panel's rollability, combined with a flexible film structure to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation sheet is used in a rollable display panel, then heat dissipation is improved, but the bending and rolling performance deteriorates due to interference from the rigid heat dissipation structure
Solution Approach 1:
The patent replaces rigid heat dissipation sheets with flexible films containing heat dissipation patterns. These flexible films can bend and roll with the display panel while still providing effective heat dissipation through the conductive patterns embedded in the flexible substrate, thus resolving the contradiction between heat dissipation efficiency and bending/rolling performance.
Solution Approach 2:
The patent changes the physical state and properties of the heat dissipation component from rigid to flexible. By using flexible materials with appropriate thermal conductivity and mechanical properties, the system achieves both effective heat dissipation and compatibility with the flexible/rollable nature of the display panel.
2Temperature
If a rigid heat dissipation structure is added to the display panel, then heat dissipation efficiency is improved, but the flexibility and rollability of the panel deteriorates
Solution Approach 1:
The patent employs flexible films with integrated heat dissipation patterns instead of rigid heat dissipation structures. The flexible nature of these films allows them to conform to the bent and rolled configuration of the display panel while maintaining thermal conductivity through the conductive patterns, thus preserving both heat dissipation efficiency and flexibility/rollability.
Solution Approach 2:
The patent uses composite structures combining flexible substrates with conductive materials to create heat dissipation patterns. This composite approach integrates the flexibility of polymer materials with the thermal conductivity of conductive inks or particles, achieving both mechanical flexibility and thermal management functionality.
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
Enhances heat dissipation efficiency in rollable display devices, preventing heat-related operational issues and maintaining image quality by effectively diffusing and discharging heat generated during operation.
Implementation Method 1
a heat pipe located at a partial area of the display panel that is adjacent to the slot of the housing when the display panel is in a rolled state
Implementation Method 2
The heat pipe is in contact with the metal layer
Data Source
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AI summary
A display device includes: a first base layer; a second base layer on the first base layer; a pixel circuit layer on the second base layer, the pixel circuit layer including a transistor; a display element layer on the pixel circuit layer, the display element layer including a light emitting element electrically connected to the transistor; a metal layer between the first base layer and the second base layer; and a heat pipe in contact with the metal layer.