Display Device Integrated Receiving Member Thermal Stress Management
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Solution Overview
Problem
Flat panel displays, such as LCDs and OLEDs, face durability issues due to thermal deformation between the mold frame and chassis during manufacturing and usage, leading to potential failures.
Innovation Solution
An integrated receiving member is designed with a press molding portion made of metallic material and an injection molding portion made of resin-based material, featuring a flange portion that is partially or wholly separated from the side wall portion by more than 0.5 mm, protruding in a direction perpendicular to the side wall, and having rounded corners with a radius greater than 0.3 mm, formed using an insert injection method to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the mold frame and chassis are made of different materials (metallic press molding portion and resin injection molding portion), then the structural strength and durability are improved, but thermal deformation occurs due to different thermal expansion coefficients
Solution Approach 1:
The receiving member is divided into two distinct portions: a press molding portion (metallic) and an injection molding portion (resin-based), each made of different materials optimized for their specific functions. This segmentation allows each material to be selected for its optimal properties while managing the thermal expansion differences through the designed interface between portions.
Solution Approach 2:
The receiving member employs a composite structure combining metallic press molding portion and resin-based injection molding portion. This composite approach leverages the high strength and thermal stability of metal in the press molding portion while utilizing the lightweight and cost-effective resin material in the injection molding portion, creating a hybrid structure that balances multiple requirements.
2Duration of action of stationary object
If the flange portion is separated from the side wall portion by more than 0.5 mm, then the durability is improved by dispersing thermal stress, but the structural rigidity may be reduced
Solution Approach 1:
The flange portion is designed with a specific local separation distance (greater than 0.5 mm) from the side wall portion at the critical stress concentration area. This localized quality change allows thermal stress to be dispersed in the region most susceptible to thermal deformation, while maintaining adequate structural rigidity through the overall design of the receiving member.
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 durability of the display device by dispersing thermal stress and preventing failure, ensuring the flange portion is not easily broken under external impact, thereby enhancing the overall stability and reliability of the display device.
Implementation Method 1
The integrated receiving member may be formed using an insert injection method
Data Source
AI summary
A display device is disclosed. In one embodiment, the device includes a display panel displaying an image and an integrated receiving member supporting the display panel. The integrated receiving member includes a press molding portion including a bottom portion and a side wall portion bent and extended from the bottom portion and having a through-hole formed therein and an injection molding portion including a frame portion integrally attached to at least one side of the press molding portion, facing the display panel and a flange portion extended from the frame portion and protruding through the through-hole. The flange portion of the injection molding portion is wholly or partially separated from the side wall portion of the press molding portion within the through-hole.