Quantum Dot Capsule Light Guide Plate for Display Color Reproduction
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Solution Overview
Problem
Current display apparatuses using quantum dot sheets for improved color reproduction face increased production and management costs due to the use of barrier films, which also cause optical losses.
Innovation Solution
A light guide plate incorporating quantum dot capsules dispersed within a transparent substrate, such as PMMA or PC, eliminates the need for barrier films by using a protection layer to safeguard the quantum dot resin, allowing for uniform brightness and color reproduction without patterned reflection surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum dot sheets with barrier films are used to protect quantum dot resin, then reliability is improved, but manufacturing cost increases and optical loss occurs
Solution Approach 1:
The invention extracts and removes the barrier film layer from the quantum dot sheet structure. By encapsulating quantum dot resin directly in a light guide plate without requiring separate barrier films, the solution eliminates the harmful factor (barrier film) while maintaining protection of the quantum dot resin through direct integration into the light guide plate matrix.
Solution Approach 2:
The invention merges the quantum dot resin protection function with the light guide plate structure itself. The light guide plate serves dual purposes: guiding light and protecting quantum dot resin, eliminating the need for separate barrier films and reducing overall device complexity and manufacturing cost.
2Reliability
If quantum dot sheets with barrier films are used to protect quantum dot resin, then reliability is improved, but optical loss increases
Solution Approach 1:
The invention extracts and removes the barrier film layer that causes optical interference. By eliminating this intermediate layer, light can pass more directly through the quantum dot sheet, reducing optical loss while maintaining resin protection through alternative encapsulation methods.
3Illumination intensity
If quantum dot sheets are used for color reproduction, then color quality is improved, but device complexity increases due to multiple layers
Solution Approach 1:
The invention combines multiple functions into a single integrated structure. The light guide plate simultaneously serves as the structural component, light guiding element, and protective enclosure for quantum dot resin, eliminating the need for separate barrier films and reducing overall device complexity while maintaining color reproduction quality.
Solution Approach 2:
The light guide plate is designed to perform multiple functions: guiding light from the light source, protecting the quantum dot resin through encapsulation, and serving as the structural support for the quantum dot sheet. This multi-functionality reduces the total number of components and layers required in the display device.
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 solution enhances color reproduction and brightness in display apparatuses by scattering and refracting light with quantum dot capsules, reducing production costs and optical losses, while eliminating the need for patterned reflection surfaces and barrier films.
Implementation Method 1
The solution enhances color reproduction and brightness in display apparatuses by scattering and refracting light with quantum dot capsules
Implementation Method 2
The solution enhances color reproduction and brightness in display apparatuses by scattering and refracting light with quantum dot capsules
Data Source
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AI summary
Provided is a display apparatus (1, 301) including: a liquid crystal panel (10, 310) configured to display an image; a light guide plate (60, 160, 260, 360) configured to guide light toward the liquid crystal panel; and a light source (91, 191, 291, 381) positioned adjacent to a side of the light guide plate, wherein the light guide plate includes a substrate (92, 382) having transparency, and a plurality of quantum dot capsules (72, 366) dispersed inside the substrate to change a color of light emitted from the light source.