Liquid Crystal Display Cover Bottom Thermal Management
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Solution Overview
Problem
Conventional liquid crystal displays face challenges in achieving a thin profile and light weight due to numerous components, and they struggle with efficiently dissipating heat generated in the backlight unit, which can lead to product damage or driving failure.
Innovation Solution
A liquid crystal display design featuring a light guide plate under the liquid crystal panel, a light source module with a cover bottom that includes thermal tape for heat dissipation, and a stand to accommodate the light source module and panel driver, allowing for dual heat dissipation paths without additional heat sink structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If case members are removed to achieve thin profile and light weight, then the display device becomes thinner and lighter, but heat dissipation capability deteriorates
Solution Approach 1:
The cover bottom is merged with heat dissipation functionality by integrating the light source module directly onto it, combining structural support with thermal management in a single component rather than using separate case members
Solution Approach 2:
The cover bottom serves multiple functions simultaneously: it provides structural support for the liquid crystal panel, acts as a mounting platform for the light source module, and functions as a heat dissipation structure through its direct contact with the light source
2Device complexity
If case members are removed to achieve thin profile and light weight, then the display device becomes simpler and lighter, but reliability deteriorates due to heat-related damage
Solution Approach 1:
The cover bottom merges structural and thermal management functions, eliminating the need for separate case members while maintaining reliability through integrated heat dissipation capability
Solution Approach 2:
The heat generated by the light source, which could be harmful, is converted into a beneficial effect by using the cover bottom as a heat dissipation path, directly contacting the light source to conduct heat away from the display device
3Temperature
If additional heat sink structures are added to improve heat dissipation, then heat dissipation capability is improved, but profile thickness and weight increase
Solution Approach 1:
The cover bottom serves itself by performing both structural support and heat dissipation functions, eliminating the need for additional dedicated heat sink structures that would increase thickness and weight
Solution Approach 2:
The cover bottom is designed as a multi-functional component that simultaneously provides mechanical support and thermal management, replacing the need for separate heat sink structures
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
This design enables efficient heat dissipation, reduces manufacturing costs and time, and results in a thinner, lighter liquid crystal display with improved reliability and image quality.
Implementation Method 1
an adhesive member between the inside surface of the light source module and the first guide portion, and the adhesive member is a thermal tape
Data Source
AI summary
A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal panel, a light guide plate disposed under a back surface of the liquid crystal panel and having a light incident surface, a light source module including at least one light source disposed opposite the light incident surface and supporting an edge of one side of the liquid crystal panel at a lower part of the liquid crystal panel, and a cover bottom supporting an edge of the other side of the liquid crystal panel at the lower part of the liquid crystal panel and covering at least a portion of the light guide plate and at least a portion of the light source module.