Curved Light Guide Plate Groove Adhesive Stress Reduction
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Solution Overview
Problem
Curved light guide plates experience increased stress and friction during bending, leading to potential scratches and poor display quality due to the force required for curvature, which existing methods fail to adequately address.
Innovation Solution
A method involving the formation of grooves on the light guide plate's surface, partially filled with a curable elastomeric adhesive, which reduces stress and friction during bending, allowing for a more flexible and scratch-resistant curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a planar light guide plate is bent by force to obtain a curved light guide plate, then the curved display screen can be formed, but the light guide plate experiences greater stress and friction force, likely causing scratches and impacting display effect
Solution Approach 1:
The light guide plate is designed with an array of micro-grooves on its surface, creating a porous-like structure. These grooves reduce the contact area between the light guide plate and peripheral members, thereby reducing friction force and stress during bending, which prevents scratches while maintaining the curved shape
Solution Approach 2:
The surface of the light guide plate is segmented into multiple grooves that run along the bending direction. This segmentation reduces the continuous stress distribution by creating discrete contact points, allowing the plate to bend more easily without generating excessive friction that would cause scratches
2Shape
If a planar light guide plate is bent by force to obtain a curved light guide plate, then the curved display screen can be formed, but the friction force between the curved light guide plate and peripheral members increases
Solution Approach 1:
The array of micro-grooves on the light guide plate surface creates a porous-like structure that significantly reduces the contact area between the plate and peripheral members. This reduction in contact area directly lowers the friction force during bending operations, enabling easier formation of curved shapes without excessive force requirements
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 grooves and adhesive combination minimizes stress and friction, reducing the risk of scratches and enhancing display quality by allowing for a more flexible and durable curved light guide plate.
Implementation Method 1
forming a curable filling adhesive on the main surface on which the grooves are formed; wherein the grooves are at least partially filled with the filling adhesive
Implementation Method 2
the filling adhesive comprise an elastomeric material
Data Source
AI summary
The present disclosure relates to a light guide plate and its manufacturing method, and a backlight module. The light guide plate includes two opposite main surfaces and a side surface located between the two main surfaces. The method comprises: forming a plurality of grooves on at least one main surface of the light guide plate.