Warping Buffering Structure for Light Guide Plate Thermal Expansion
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Solution Overview
Problem
The existing edge-type backlight modules for liquid crystal displays experience warping of the light guide plate due to thermal expansion, affecting the visual performance and longevity of the display.
Innovation Solution
A warping buffering structure comprising a first and second member with inclined surfaces and a flexible connection to the backlight module's side wall, allowing sliding engagement and self-locking, which absorbs and redirects thermal expansion forces to prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the light guide plate is fixed rigidly to the back cover by riveting columns, then the structural stability is improved, but the light guide plate warps due to thermal expansion when heated
Solution Approach 1:
The patent transforms the rigid fixed structure into a dynamic adjustable structure by introducing a buffering component with inclined surfaces that can slide along the light guide plate. This allows the system to adapt to thermal expansion dynamically, converting the static riveting connection into a movable buffering mechanism that absorbs expansion forces while maintaining structural stability.
Solution Approach 2:
The buffering component serves as an intermediary element between the light guide plate and the back cover. It mediates the thermal expansion forces by providing a sliding interface with inclined surfaces, allowing controlled movement that prevents direct stress transmission to the light guide plate while maintaining overall structural support.
2Shape
If the light guide plate is allowed to move freely to accommodate thermal expansion, then the warp is reduced, but the structural stability deteriorates
Solution Approach 1:
The buffering component functions as a flexible mechanical element that allows controlled movement along the light guide plate. The inclined surfaces create a sliding mechanism that provides flexibility to accommodate thermal expansion while maintaining structural connection, effectively acting as a flexible buffer between rigid components.
Solution Approach 2:
The patent changes the positional parameter of the buffering component along the light guide plate in response to thermal expansion. The sliding mechanism allows the buffering component to move to different positions, adjusting the system's configuration dynamically to accommodate dimensional changes while maintaining structural integrity.
3Shape
If a buffering structure is added to accommodate thermal expansion, then the light guide plate warp is reduced, but the device complexity increases
Solution Approach 1:
The buffering structure is segmented into distinct functional parts: the buffering component with inclined surfaces and the sliding interface on the light guide plate. This segmentation allows each part to perform its specific function independently while working together as a coordinated system, simplifying the overall design and manufacturing process.
Solution Approach 2:
The buffering structure is designed to automatically respond to thermal expansion forces without external control. The inclined surfaces and sliding mechanism create a self-adjusting system that naturally accommodates dimensional changes through mechanical interaction, eliminating the need for complex control systems or additional actuators.
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
Effectively reduces the warp of the light guide plate during heating, enhancing the stability and service life of both the light guide plate and the backlight module by preventing deformation and ensuring secure attachment.
Implementation Method 1
One side of the light guide plate adjacent to the light source is heated after the light source is in use for a long time, which causes the light guide plate to be expanded
Implementation Method 2
a first inclined surface formed on an end of one side of the first member which is away from the light guide plate; and a second inclined surface formed on an end of one side of the second member which is away from the side wall, and the second inclined surface contacting the first inclined surface and being slidably engaged with the first inclined surface
Data Source
AI summary
The present disclosure provides a warping buffering structure for a light guide plate and a backlight module. The warping buffering structure includes: a first member with one side thereof contacting one end of the light guide plate of a backlight module; a second member with one side thereof flexibly connected to a side wall of a back cover of the backlight module, and the second member capable of sliding along an extending direction of the side wall; a first inclined surface formed on an end of one side of the first member which is away from the light guide plate; and a second inclined surface formed on an end of one side of the second member which is away from the side wall, and the second inclined surface contacting the first inclined surface and being slidably engaged with the second inclined surface.