Metallic Supporting Layer for Display Device Heat Dissipation
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Solution Overview
Problem
Display devices face challenges in durability against external impacts and effective heat dissipation, which can lead to damage and user safety issues, while also requiring an aesthetic appearance both in use and when turned off.
Innovation Solution
A display device design featuring a display panel with a protection film, a supporting layer made of metallic materials like stainless steel or copper, and a pressure-sensitive adhesive layer, which provides rigidity, heat dissipation, and a black plating layer for aesthetic purposes, along with an anti-reflection unit and pressure-sensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a typical display device structure is used, then the device can be manufactured with standard processes, but the device lacks sufficient durability against external impacts and has poor heat dissipation
Solution Approach 1:
The patent employs a composite structure consisting of a protection film layer and a supporting layer with different material properties. The protection film provides impact resistance while the supporting layer offers rigidity and heat dissipation. This composite approach enhances durability without requiring a complete redesign of the entire device structure.
Solution Approach 2:
The display device is divided into distinct functional layers: a protection film for impact protection, a supporting layer for structural stability and heat dissipation, and adhesive layers for bonding. This segmentation allows each layer to be optimized for its specific function while maintaining overall device integrity through standardized assembly processes.
2Temperature
If heat dissipation structures are added to the display device, then heat dissipation improves, but the aesthetic appearance when turned off deteriorates
Solution Approach 1:
The supporting layer is designed with a black color that matches or complements the display panel's appearance when turned off. This color matching allows the heat dissipation structure to blend aesthetically with the overall device design, eliminating the visual impact of added thermal management components.
Solution Approach 2:
The heat dissipation function is merged into the supporting layer that already serves structural purposes. By integrating thermal management into an existing structural component rather than adding separate visible heat sinks or vents, the aesthetic appearance is preserved while achieving effective heat dissipation.
3Reliability
If a supporting layer with metallic material is added below the display panel, then heat dissipation and durability improve, but the device complexity increases
Solution Approach 1:
The supporting layer is designed to perform multiple functions simultaneously: providing structural support against impacts, dissipating heat from the display panel, and serving as a mounting surface for other components. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in overall device complexity.
4Temperature
If the supporting layer covers the entire display region, then heat dissipation coverage is maximized, but alignment marks become hidden
Solution Approach 1:
The supporting layer is designed with a recessed region that locally exposes alignment marks on the protection film. This localized modification allows alignment marks to remain visible for manufacturing purposes while the supporting layer maintains comprehensive coverage for heat dissipation across the entire display region. The recessed region creates a visual window without compromising thermal management coverage.
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 enhances durability against external impacts, improves heat dissipation to prevent user injury, and maintains an aesthetically pleasing appearance even when the device is turned off, by using a metallic supporting layer and pressure-sensitive adhesive for structural integrity and heat management.
Implementation Method 1
The supporting layer may include at least one of stainless steel, aluminum, iron, and copper... improves heat dissipation to prevent user injury
Implementation Method 2
The first adhesive layer may include a pressure sensitive adhesive... contacting a bottom surface of the protection film
Data Source
AI summary
A display device including a display panel, in which a display region including a plurality of organic light emitting devices and a non-display region adjacent to the display region are defined, a protection film disposed below the display panel, a first adhesive layer contacting a bottom surface of the protection film, a supporting layer comprising a metallic material, at least overlapping the entire display region, and contacting the first adhesive layer, an input-sensing unit disposed on the display panel, an anti-reflection unit disposed on the input-sensing unit, and a window panel disposed on the input-sensing unit.