Reflective Display Light Source with Multi-Temperature Segmentation
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Solution Overview
Problem
Conventional reflective displays face challenges in maintaining or improving image quality due to the limitations of white light color temperature, which significantly affects color images.
Innovation Solution
A light source device comprising multiple light emitting components with different fluorescent parts, including green and red fluorescent materials, is used to generate illumination light with varying color temperatures, ensuring a maximum difference of at least 2000K between the first and second color temperatures, thereby providing appropriate white light for reflective displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional front light module emits white light with a fixed color temperature, then the structure is simple and easy to manufacture, but the image quality and color accuracy cannot be maintained or improved
Solution Approach 1:
The light source device is segmented into multiple light emitting components, each with different fluorescent parts (first fluorescent part with first color temperature, second fluorescent part with second color temperature). This segmentation allows independent optimization of each component's color temperature characteristics to collectively improve overall image quality and color accuracy.
Solution Approach 2:
The patent applies parameter changes by varying the color temperature parameter across different light emitting components. By setting different color temperatures (with maximum difference >= 2000K) for different components, the system can adjust and optimize the illumination characteristics to enhance image quality and color representation.
2Manufacturing precision
If multiple light emitting components with different color temperatures are used, then image quality is maintained or improved, but the device complexity increases
Solution Approach 1:
Multiple light emitting components with different fluorescent parts are merged into a single integrated light source device. This merging allows the system to achieve improved color accuracy and image quality through the combined output of multiple components with complementary color temperature characteristics.
Solution Approach 2:
Each light emitting component serves multiple functions: it provides illumination while simultaneously contributing specific color temperature characteristics to the overall light output. The fluorescent parts convert light from different color temperatures, enabling a single device to achieve multi-functional color optimization for improved image quality.
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 or improves image quality by adjusting the color temperature of the illumination light to a suitable range between 4500K and 7000K, enhancing the color gamut and overall image display.
Implementation Method 1
The first fluorescent part is disposed on at least one of the light emitting components and used for converting the light to a first white light, in which the first white light has a first color temperature. The second fluorescent part is disposed on at least one of the light emitting components and used for converting the light to a second white light, in which the second white light has a second color temperature.
Data Source
AI summary
A light source device is used to generate illumination light and includes a plurality of light emitting components, at least one first fluorescent part, and at least one second fluorescent part. Each light emitting component is used to emit light. The first fluorescent part is disposed on at least one of the light emitting components and able to convert the light to first white light having a first color temperature. The second fluorescent part is disposed on at least one of the other light emitting components and able to convert the light to second white light having a second color temperature. The illumination light includes the first white light and the second white light, where the maximum difference between the first color temperature and the second color temperature is greater than or equal to 2000K.