Light Guide Plate Assembly with Elastic Buffer Member
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Solution Overview
Problem
The existing light guide plates in backlight modules face issues due to oversized or undersized expansion gaps, leading to reduced optical efficiency and abnormal display quality, as they either cause the optical film to be scratched or the light guide plate to arch up due to insecure fixing and insufficient expansion space.
Innovation Solution
A light guide plate assembly with a buffer member that is partially deformable in an elastic manner is introduced between the frame and the second side edge of the light guide plate, providing a compromise between mechanical support and elastic expansion, preventing the light guide plate from arching and ensuring secure fixing without damaging the optical film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an expansion gap is provided between the light guide plate and the frame, then the light guide plate can expand freely during thermal expansion, but the optical efficiency is reduced and the light guide plate shakes causing the optical film to be scratched
Solution Approach 1:
The buffer member is designed to be elastically deformable, transitioning from a rigid gap to a dynamic cushioning element that adapts to thermal expansion while maintaining continuous contact with the light guide plate, preventing both excessive movement and compression
Solution Approach 2:
The buffer member serves as an intermediary element positioned between the frame and the light guide plate, mediating the interaction between these two components to provide both mechanical support and thermal expansion accommodation simultaneously
2Adaptability or versatility
If an oversized expansion gap is provided, then the light guide plate can expand freely, but the frame cannot compactly fix the light guide plate causing shaking and optical film damage
Solution Approach 1:
The buffer member is constructed as a flexible elastic component that can deform to accommodate thermal expansion while maintaining sufficient contact pressure to prevent light guide plate shaking, combining flexibility with structural support
3Strength
If an undersized expansion gap is provided, then the frame can compactly fix the light guide plate, but the light guide plate is compressed and arches up after thermal expansion causing display abnormality
Solution Approach 1:
The buffer member is pre-installed between the frame and light guide plate to provide cushioning before thermal expansion occurs, preventing direct compression and arching of the light guide plate while maintaining compact fixing
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 buffer member ensures high optical efficiency and display quality by providing a flexible buffer space for thermal expansion, preventing the light guide plate from shaking and arching, while maintaining secure fixation and avoiding damage to the optical film.
Implementation Method 1
A buffer member that is at least partially deformable in an elastic manner is disposed between the frame and the second side edge of the light guide plate
Implementation Method 2
the light guide plate is substantially made from polymethyl methacrylate (PMMA), which has a relatively high coefficient of thermal expansion
Data Source
AI summary
The present disclosure relates to the field of production of liquid crystal displays, in particular to a light guide plate assembly, comprising: a light guide plate which includes a first side edge for introducing light and a second side edge through which no light can be introduced, and a frame for fixing the light guide plate, the frame at least partially surrounding the second side edge of the light guide plate, wherein a buffer member that is at least partially deformable in an elastic manner is disposed between the frame and the second side edge of the light guide plate.