Integrated LCD Panel with Quantum Dot Color Conversion
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Solution Overview
Problem
Conventional liquid crystal display (LCD) panels face a challenge in achieving a thin thickness while maintaining excellent optical characteristics and color reproduction, as the addition of various optical members to enhance display quality often increases the device's thickness.
Innovation Solution
An LCD panel design that integrates optical components, including a first substrate with a low refractive index layer, a color converting member with quantum dots, and a light collecting member, which are laminated together to reduce thickness while maintaining optical efficiency and color accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If various optical members are added to enhance display quality, then optical efficiency and color reproduction are improved, but the total thickness of the display device increases
Solution Approach 1:
The patent integrates multiple optical members (polarizing layer, low refraction layer, color converting member with quantum dots) directly onto the first base substrate to form an integrated optical assembly. This merging of separate optical components into a unified structure reduces the overall thickness while maintaining the optical efficiency and color reproduction benefits that would otherwise require multiple separate layers.
Solution Approach 2:
The first base substrate serves multiple functions: it acts as the structural foundation, supports the polarizing layer, provides the low refraction layer for optical control, and holds the color converting member for color enhancement. This multi-functionality consolidates what would traditionally be separate components into a single integrated unit, reducing thickness while maintaining all optical benefits.
2Manufacturing precision
If various optical members are added to enhance display quality, then color reproduction is improved, but the total thickness of the display device increases
Solution Approach 1:
The color converting member containing quantum dots is integrated directly onto the first base substrate along with the polarizing and low refraction layers. This consolidation maintains the precise color reproduction capabilities of quantum dot technology while eliminating the thickness penalty of separate mounting and alignment of multiple optical layers.
Solution Approach 2:
The color converting member utilizes quantum dots embedded in a matrix material, creating a composite structure that provides both the color conversion function and structural integrity. This composite approach allows for thin-film implementation of color enhancement technology, maintaining color reproduction quality without increasing overall device thickness.
3Length of stationary object
If optical members are integrated to reduce thickness, then device thickness is reduced, but manufacturing complexity increases
Solution Approach 1:
The integrated optical assembly is divided into distinct functional layers (polarizing layer, low refraction layer, color converting member) that can be manufactured and characterized separately before integration. This segmentation allows for specialized manufacturing processes for each layer while maintaining the overall thin profile of the integrated structure.
Solution Approach 2:
The optical members are pre-assembled and integrated onto the first base substrate during the initial manufacturing process rather than being added as separate post-processing steps. This preliminary integration reduces the number of subsequent assembly operations required and simplifies the overall manufacturing workflow despite the complexity of the integrated structure.
4Length of stationary object
If optical members are integrated to reduce thickness, then device thickness is reduced, but exposure to external environments increases
Solution Approach 1:
The optical members (polarizing layer, low refraction layer, color converting member) are nested within and protected by the first base substrate structure. This nesting arrangement shields the sensitive optical components from direct exposure to external environmental factors while maintaining the thin overall profile of the integrated assembly.
Solution Approach 2:
The first base substrate acts as a protective shell or film that encloses and protects the integrated optical members from environmental exposure. This thin-film protection approach maintains the reduced thickness benefit while providing necessary environmental shielding for the sensitive optical components.
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 integrated design achieves a thinner LCD panel with improved optical characteristics, color reproduction, and brightness, while minimizing the exposure of optical members to external environments, thus enhancing reliability and manufacturing productivity.
Implementation Method 1
a color converting member disposed between the first low refraction layer and the first polarizing layer and including a quantum dot
Implementation Method 2
a light collecting member which collects light in a direction toward the liquid crystal layer
Implementation Method 3
a first low refraction layer disposed between the first base substrate and the first polarizing layer and having a refractive index less than that of the first base substrate
Data Source
AI summary
A liquid crystal display (“LCD”) panel and an LCD device according to an exemplary embodiment may provide a first base substrate, a first polarizing layer disposed between the first base substrate and a liquid crystal layer, a first low refraction layer disposed between the first base substrate and the first polarizing layer and having a refractive index less than that of the first base substrate, and a color converting member disposed between the first low refraction layer and the first polarizing layer and including a quantum dot in an integrated manner, to realize excellent optical characteristics and have a small thickness.