Display Light-Absorbing Layer for Edge Color Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in improving image quality, color reproduction, minimizing color differences near the edge of the display panel, reducing blue, cyan, or purple bands, effectively controlling the wavelength of light, and lowering material costs while enhancing productivity.
Innovation Solution
The display device incorporates a light absorbing layer that absorbs specific wavelengths, an optical plate, and a guide panel with a fluorescent layer to enhance light control, along with a low-concentration light absorbing layer shared by multiple models, utilizing green and red phosphors to achieve improved color reproduction and reduced material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a light absorbing layer with high phosphor concentration is used to improve color reproduction, then color reproduction is improved, but material costs increase and productivity decreases
Solution Approach 1:
The patent reduces the phosphor concentration in the light absorbing layer from high concentration to low concentration (0.1-10 wt%), fundamentally changing the material parameter to achieve both cost reduction and improved productivity while maintaining color reproduction quality through optimized optical design
Solution Approach 2:
The patent uses a composite structure combining the light absorbing layer with low concentration phosphors and the guide panel with fluorescent layer to achieve the desired optical performance without requiring high phosphor concentration in a single layer
2Manufacturing precision
If a light absorbing layer with high phosphor concentration is used to improve color reproduction, then color reproduction is improved, but material costs increase
Solution Approach 1:
The patent changes the phosphor concentration parameter from high to low (0.1-10 wt%), reducing the quantity of expensive phosphor materials needed while maintaining color reproduction quality through the combined optical system design
Solution Approach 2:
The light absorbing layer with low concentration phosphors can be shared across multiple display device models, universalizing the component design and reducing per-unit material costs through economies of scale
3Device complexity
If conventional backlight structure is used, then device simplicity is maintained, but color differences occur near the edge of the display panel
Solution Approach 1:
The patent segments the light control function into two parts: the light absorbing layer for wavelength selection and the guide panel with fluorescent layer for edge light management, separating these functions to achieve color uniformity without significantly increasing overall device complexity
Solution Approach 2:
The guide panel is specifically positioned at the edge region of the display to address the local color uniformity problem near the edges, applying the fluorescent layer only where needed to correct edge effects without modifying the entire display structure
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 image quality, minimizes color differences, reduces blue, cyan, or purple bands, effectively controls light wavelength, and lowers material costs, while allowing for shared use of the light absorbing layer across multiple display models.
Implementation Method 1
a light absorbing layer positioned on an optical path provided from the optical assembly to the display panel and absorbing light of a certain range of wavelengths
Implementation Method 2
a first pad positioned at a front surface of the light absorbing layer adjacent to an edge of the light absorbing layer, and including a fluorescent layer
Data Source
AI summary
Disclosed is a display device. The display device of the present disclosure may include: a display panel; an optical assembly providing light to the display panel; a light absorbing layer which is located on an optical path provided from the optical assembly to the display panel and which absorbs light of a certain range of wavelengths; an optical plate opposite the display panel, with respect to the light absorbing layer; and a first pad which is located at the front surface of the light absorbing layer adjacent to the edge of the light absorbing layer, and including a fluorescent layer, wherein white light may be incident to the display panel.