Light Guide Member Insertion Hole for Wavelength Conversion
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Solution Overview
Problem
Existing display devices face challenges in manufacturing reliability and efficiency, particularly in coupling light sources and wavelength conversion members with light guide members without a bonding process, which affects brightness uniformity and durability.
Innovation Solution
A display device design that incorporates a light source and a wavelength conversion member inserted into insertion holes within a light guide member, allowing for secure fixation and simplified assembly, enhancing reliability and manufacturing ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a bonding process is used to couple light sources and wavelength conversion members with light guide members, then connection strength is improved, but manufacturing complexity and time increase
Solution Approach 1:
The light guide member is designed to integrate the light source mounting function directly into its structure. The light source is positioned on a light-emitting surface of the light guide member, merging the light guide and light source mounting functions into a single component, thereby eliminating the need for separate bonding processes.
Solution Approach 2:
The light guide member serves itself by providing both light guidance and light source mounting functions. The wavelength conversion member is disposed on the light-emitting surface of the light guide member, allowing the light guide member to automatically position and support both optical components without requiring external bonding operations.
2Strength
If a bonding process is used to assemble components, then assembly strength is improved, but manufacturing time increases
Solution Approach 1:
By combining the light source mounting function into the light guide member structure, the number of separate assembly steps is reduced. The light source and wavelength conversion member are positioned directly on the light guide member during manufacturing, eliminating time-consuming bonding operations while maintaining assembly strength.
3Productivity
If light sources are positioned close to the light guide member, then light incidence efficiency is improved, but alignment precision requirements increase
Solution Approach 1:
The light guide member provides self-alignment functionality through its structured light-emitting surface. The light source is positioned on this surface, which inherently guides the light emission direction and ensures proper alignment with the wavelength conversion member and light guide path, reducing the need for high-precision external alignment operations.
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 design ensures effective light incidence and conversion, improving brightness uniformity and mechanical strength, while simplifying the manufacturing process by eliminating the need for additional bonding steps.
Implementation Method 1
a quantum dot bar having a plurality of quantum dots, which can convert blue light into red light or green light, is positioned in front of a blue LED that emits the blue light. Thus, as the blue light is irradiated onto the quantum dot bar, the blue light, the red light and the green light are mixed and the mixed light is incident into the light guide plate, thereby generating white light.
Data Source
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AI summary
Disclosed is a display device. The display device includes a light source; a wavelength conversion member to convert a wavelength of light generated from the light source; and a light guide member to guide the light converted by the wavelength conversion member, wherein the wavelength conversion member is disposed in an insertion hole formed in the light guide member.