Wavelength Conversion Member for LCD Color Temperature Control
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Solution Overview
Problem
Conventional LCD light sources struggle to maintain high definition and luminance over time while adjusting color temperature according to environmental changes, which is crucial for modern flat panel display devices.
Innovation Solution
A light source assembly incorporating a light-emitting chip and a wavelength conversion member with adjustable wavelength conversion patterns that alter light color by varying the overlapping areas of wavelength conversion layers, allowing for precise adjustment of color temperature and purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional light sources (CCFL, EEFL, LED) are used in backlight assemblies, then basic illumination is provided, but the light source cannot maintain high definition and high luminance over time nor adjust color temperature according to environmental changes
Solution Approach 1:
The backlight assembly is segmented into multiple independent light source units, each with its own wavelength conversion member. This segmentation allows individual control and optimization of each unit's color temperature and luminance characteristics, enabling the system to maintain high definition and luminance while adapting to environmental changes.
Solution Approach 2:
The invention introduces adjustable wavelength conversion members that can dynamically change their optical properties. The wavelength conversion members are designed to adjust their conversion characteristics in response to environmental conditions, enabling real-time color temperature adjustment while maintaining stable luminance output through active control mechanisms.
2Adaptability or versatility
If a single wavelength conversion layer is used, then the structure is simple, but the color purity and color temperature adjustment capability are limited
Solution Approach 1:
The wavelength conversion function is segmented into multiple independent conversion layers, each responsible for specific wavelength conversions. This allows the system to achieve broad color temperature adjustment range by selectively activating different layers, while each individual layer maintains a relatively simple structure that is easy to manufacture.
Solution Approach 2:
The multiple wavelength conversion layers are designed to work together as a universal system that can produce various color temperatures by adjusting the activation and combination of different layers. Each layer serves multiple purposes: wavelength conversion, color purification, and adjustable color temperature control, reducing the need for separate 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 solution enables high color purity and optimized color temperature adjustments, ensuring consistent high-definition and luminance performance even under varying environmental conditions.
Implementation Method 1
a wavelength conversion member which includes wavelength conversion particles that convert the light into light having a predetermined wavelength
Data Source
AI summary
A wavelength conversion member which can achieve high color purity and optimize color temperature according to environmental changes, a light source assembly including the wavelength conversion member, and a liquid crystal display (LCD) including the light source assembly. The light source assembly includes a light-emitting chip which generates light and a wavelength conversion member which includes wavelength conversion particles that convert the light into light having a predetermined wavelength, the predetermined wavelength being determined according to the size of the wavelength conversion particles.