Flexible Light Guide Plate Backlight Uniformity
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Solution Overview
Problem
Existing flat display devices face challenges in achieving superior and uniform brightness while maintaining a slim structure, as they often require a rigid structure to ensure consistent light distribution and prevent light source misalignment.
Innovation Solution
A flexible light guide plate is used in conjunction with a support member that fixes and supports the light source and light guide plate, maintaining a constant interval between the light exit and incident surfaces to ensure uniform light distribution and prevent misalignment, even when the light guide plate bends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a rigid structure is used to ensure consistent light distribution and prevent light source misalignment, then brightness uniformity is improved, but the display device cannot achieve a flexible and slim structure
Solution Approach 1:
The patent uses a flexible light guide plate with reduced thickness to enable display device flexibility while maintaining light distribution uniformity. The flexible plate is配合 with a support member structure that accommodates the light source and plate, allowing the system to bend without compromising brightness uniformity or causing misalignment.
2Length of moving object
If the light guide plate thickness is reduced to achieve flexibility, then the display device becomes slim and flexible, but the light guide plate may bend and cause misalignment between light source and light guide plate
Solution Approach 1:
The patent employs a support member structure that嵌套 (nested) the light source and light guide plate together, creating a integrated assembly that maintains their relative positions. This nested configuration prevents misalignment even when the overall structure bends, allowing thin flexible plates without compromising alignment stability.
Solution Approach 2:
The support member acts as an intermediary between the light source and flexible light guide plate, providing mechanical support and maintaining constant spacing. This intermediary structure enables the thin flexible plate to function properly without direct rigid connection, preventing misalignment during bending.
3Adaptability or versatility
If a flexible light guide plate is used without support structure, then the display device achieves flexibility, but the light source and light guide plate become spaced apart or tilted due to bending
Solution Approach 1:
The patent divides the support function into a separate support member structure that is distinct from both the light source and light guide plate. This segmentation allows the support member to specifically address alignment issues while the light guide plate maintains its flexibility, resolving the contradiction between flexibility and alignment precision.
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 configuration allows for superior and uniform brightness in a flexible and slim display device, preventing light source and light guide plate misalignment and maintaining brightness uniformity even with a thin light guide plate.
Implementation Method 1
a light guide plate, in which a light incident region having a light incident surface onto which light is incident and a light exit region through which the incident light is emitted are defined
Data Source
AI summary
Disclosed are a display device and a backlight unit. The display device comprises a flexible light guide plate, a light source disposed at one side of the light guide plate, and a support member disposed in opposition to the light guide plate and the light source to support the light guide plate. The support member allows the light source and the light guide plate to have constant interval therebetween, and prevents the light source and the light guide plate from being tilted each other. The display device and the backlight unit ensure improved brightness and brightness uniformity.