Thermal Spacer for LED Backlight Light Guide Plate
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Solution Overview
Problem
LED-based backlight assemblies in display apparatuses face issues with heat generation, leading to reduced light efficiency and physical deformation of internal components, which deteriorate display quality due to thermal conduction.
Innovation Solution
Incorporating a spacer member to create a thermal separation between the light source and the light guide plate, preventing direct heat transfer and maintaining the light guide plate's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED light sources are used in the backlight assembly, then light efficiency and power consumption are improved, but heat generation increases causing thermal deformation of internal parts
Solution Approach 1:
A spacer member is introduced as an intermediary component between the LED light source and the light guide plate. This spacer provides thermal isolation, preventing direct heat transfer from the LED to the light guide plate, thereby resolving the contradiction between using efficient LED light sources and preventing thermal deformation of internal parts.
2Productivity
If the light source is placed close to the light guide plate, then light output efficiency is improved, but thermal conduction causes deformation of the light guide plate
Solution Approach 1:
The spacer member acts as a thermal barrier while allowing optical functionality to be maintained. It enables the light source to remain positioned for optimal light output efficiency while preventing thermal conduction that would cause deformation of the light guide plate structure.
Solution Approach 2:
The backlight assembly is segmented into distinct functional zones by introducing the spacer member. This creates a thermal isolation zone between the light source and light guide plate, allowing each component to operate in its optimal thermal environment while maintaining overall system 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
This solution effectively reduces thermal deformation of the light guide plate, enhancing display quality by maintaining the light guide plate's structure and preventing heat-induced degradation.
Implementation Method 1
A spacer member disposed within the display apparatus to engage directly or indirectly with the light source and the light guide plate so as to provide a predetermined thermal separation spacing between the light source and the at least one incident surface of the light guide plate
Data Source
AI summary
A spacer member is provided within a display apparatus that includes a heat-emitting light source and a thermally deformable light guide plate. In one embodiment, the spacer member includes a pair of spacer members disposed at sides of the light source and engaging the light guide plate so as to space the light source from a light receiving incident surface of the PGP by a predetermined distance.