Display Assembly Color Uniformity via Quantum Dot Wavelength Transformation
Solution Overview
Problem
Conventional display technologies face challenges in accurately displaying exact colors, particularly in ensuring color uniformity across the screen, especially near the light source, where colors may appear different due to light leakage and wavelength changes.
Innovation Solution
A display assembly comprising a light source, a light guide plate, a color transformer, and a quantum dot sheet, where the color transformer alters the light wavelength to match the intended color, and a light leakage preventer, such as a sponge, is used to maintain color accuracy by preventing light leakage and ensuring uniform color representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional light guide plate is used without color transformation components, then the structure is simple and manufacturing is easier, but color uniformity deteriorates near the light source due to light leakage and wavelength changes
Solution Approach 1:
A quantum dot sheet is introduced as an intermediary component between the light guide plate and the display panel. This quantum dot sheet transforms the wavelength of light that leaks near the light source, converting it to match the intended color representation. This mediator approach resolves the color uniformity issue without requiring fundamental changes to the light guide plate structure, thus improving color accuracy while maintaining relative structural simplicity.
Solution Approach 2:
The patent applies different solutions to different regions of the display: a color transformer (quantum dot sheet) is specifically positioned near the light source where color uniformity problems occur, while other regions can use standard light guide plate structures. This localized application of color transformation technology addresses the specific problem area without unnecessarily complicating the entire display structure.
2Manufacturing precision
If no light leakage prevention measure is taken, then the device structure remains simple, but color accuracy deteriorates near the light source
Solution Approach 1:
Instead of simply blocking light leakage with opaque materials that would create dark regions, the patent converts the harmful leaked light into beneficial colored light using quantum dots. The quantum dot sheet transforms the wavelength of leaked light to match the intended color, turning the harmful light leakage into a useful contribution to the displayed image, thereby improving color accuracy while maintaining a relatively simple structure.
3Manufacturing precision
If the display assembly includes multiple components (color transformer, quantum dot sheet, light leakage preventer), then color uniformity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated components. The quantum dot sheet serves both as a color transformation medium and as a light management layer. The light leakage preventer is integrated with the housing structure rather than being a separate component. This merging approach reduces the number of discrete parts and simplifies the manufacturing process while maintaining the color uniformity benefits.
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 effectively maintains color uniformity across the display screen, ensuring that colors near the light source are accurately represented as intended, enhancing the overall display quality and user experience.
Implementation Method 1
a quantum dot sheet disposed on a top surface of the light guide plate... configured to change a color of light incident to the color transformer
Implementation Method 2
a color transformer disposed proximate to an edge of the light guide plate, and configured to change a color of light incident to the color transformer
Implementation Method 3
a light guide plate disposed to receive light emitted from the light source on a lateral side
Implementation Method 4
a first light absorber disposed in contact with the color transformer, and configured to absorb light emitted from the light source
Data Source
AI summary
The display assembly includes: a light source configured to emit light; a light guide plate disposed to receive light emitted from the light source on a lateral side; and a color transformer disposed proximate to an edge of the light guide plate, and configured to change a color of light incident to the color transformer.