Flexible Display Module Thermal Management via Elastic Sheet
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Solution Overview
Problem
Flexible display modules used in complex environments like vehicles or machine tools are prone to damage due to insufficient strength and heat dissipation, leading to reduced service life.
Innovation Solution
A display module design incorporating a display film layer, a heat dissipation film layer, a support plate, and an elastic thermal conductive sheet, where the support plate is connected to the flat area of the heat dissipation film layer and the elastic thermal conductive sheet is connected to the bending areas, enhancing both strength and heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display module is made flexible to enable bending areas, then adaptability to complex working conditions is improved, but strength and heat dissipation performance deteriorate
Solution Approach 1:
The patent applies composite materials by combining the heat dissipation film layer with a support plate and elastic thermal conductive sheet. This composite structure provides both the flexibility needed for bending areas and the structural strength through the rigid support plate, while the elastic thermal conductive sheet maintains thermal conductivity during bending operations.
Solution Approach 2:
The display module is segmented into distinct functional areas: a flat area for primary display and bending areas for flexibility. The support plate is positioned to specifically reinforce the flat area, while the elastic thermal conductive sheet is positioned to serve the bending areas, allowing each segment to optimize its local function.
2Adaptability or versatility
If the display module is made flexible to enable bending areas, then adaptability to complex working conditions is improved, but heat dissipation performance deteriorates
Solution Approach 1:
The elastic thermal conductive sheet acts as an intermediary between the bending areas of the heat dissipation film layer and the support plate. It maintains thermal conduction pathways during bending by flexing elastically, ensuring heat dissipation performance is preserved even in the flexible bending regions where rigid thermal pathways would fail.
Solution Approach 2:
The combination of heat dissipation film layer, support plate, and elastic thermal conductive sheet creates a composite thermal management system that maintains effective heat dissipation across both flat and bending areas, enabling the module to handle thermal loads in complex working conditions.
3Strength
If the support plate is connected to the flat area and elastic thermal conductive sheet to bending areas, then strength and heat dissipation are improved, but device complexity increases
Solution Approach 1:
The support plate serves multiple functions simultaneously: it provides structural strength to the flat area, acts as a heat dissipation pathway, and works in conjunction with the elastic thermal conductive sheet to support the bending areas. This multi-functionality reduces the need for separate components for each function.
Solution Approach 2:
The patent merges the heat dissipation function and structural support function into a unified system where the support plate and elastic thermal conductive sheet work together as an integrated assembly with the heat dissipation film layer, rather than as separate independent components.
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 improves the strength and heat dissipation performance of the display module, thereby extending its service life and enabling reliable operation in demanding environments.
Implementation Method 1
an elastic thermal conductive sheet (4) connected to a position where the bending areas (102) of the second surface of the heat dissipation film layer (2) are located
Implementation Method 2
the elastic thermal conductive sheet (4) is bonded to the bending areas (102) of the second surface of the heat dissipation film layer (2) through thermal conductive adhesive
Implementation Method 3
the main body of the device and the support plate are connected through thermal conductive silicone grease
Data Source
AI summary
A display module and an electronic device are provided. The display module includes a display film layer, a heat dissipation film layer, a support plate and an elastic thermal conductive sheet. The display film layer and the heat dissipation film layer include a flat area and bending areas, and an angle exists between a tangent of a curved surface formed by the bending areas and a plane where the flat area is located. The display film layer is stacked on a first surface of the heat dissipation film layer. The support plate is connected to a position where the flat area of a second surface of the heat dissipation film layer is located, and the elastic thermal conductive sheet is connected to a position where the bending areas of the second surface of the heat dissipation film layer are located. The first surface and the second surface are opposite surfaces.