Display Color Filters with Dye-Pigment Composition for Edge Blemish Reduction
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Solution Overview
Problem
Display devices exhibit blemishes and differences in reflective color tone around the edges due to high-temperature or high-humidity environments, and existing technologies fail to address these issues effectively.
Innovation Solution
A display device design that uses a color filter composition including a dye and a pigment for red and green emitting elements, without a polarizer, to control viewing angle and improve reflectivity and visibility, while using a unified material for red and green color filters to enhance brightness and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a polarizer is used to achieve blackness and reduce external light reflection, then visibility is improved, but device complexity and cost increase
Solution Approach 1:
The patent removes the polarizer from the display device structure entirely. Instead of using a polarizer to control light reflection and improve visibility, the invention uses a color filter layer with specific optical properties that achieves the same visual效果 without the additional component, thereby reducing device complexity while maintaining visibility
Solution Approach 2:
The patent applies a color filter layer with specific local optical properties (high reflectivity in certain wavelengths) to achieve the visual enhancement function that would otherwise require a polarizer. This localized functional approach replaces the global polarizer component with a targeted color filter solution
2Ease of manufacture
If conventional color filters are used in high-temperature or high-humidity environments, then manufacturing is simplified, but blemishes and reflective color tone differences occur around the edges
Solution Approach 1:
The patent changes the chemical composition parameters of the color filter by using a dye without a central metal atom instead of conventional metal-complex dyes. This parameter change makes the color filter resistant to light-induced chemical reactions in high-temperature and high-humidity environments, preventing edge blemishes and maintaining uniform luminance while keeping the manufacturing process simple
Solution Approach 2:
The patent uses a composite color filter material consisting of a dye and a pigment, where the dye provides coloration without metal atoms and the pigment enhances stability. This composite material approach maintains ease of manufacture while significantly improving reliability and uniformity in challenging environmental conditions
3Illumination intensity
If the emission area is increased to provide high brightness, then illumination intensity is improved, but power consumption increases
Solution Approach 1:
The patent uses a color filter with high reflectivity properties that reflects ambient light to enhance display brightness. By utilizing reflected light rather than solely relying on emitted light, the system achieves high brightness perception while reducing the power required from the light-emitting elements, thus improving brightness efficiency
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 reduces edge blemishes, improves reflective visibility, and ensures high brightness with low power consumption by preventing light/water reactions in the color filters, maintaining uniform luminance across the display area.
Implementation Method 1
a color filter composition including a dye not including a central metal in the molecule and a pigment
Implementation Method 2
a dye not including a central metal in the molecule and a pigment
Implementation Method 3
emitting elements disposed in the first to third emission areas, respectively
Implementation Method 4
to improve the reflectivity and the reflective visibility of a display device
Data Source
AI summary
Provided is a display device, in which reflective visibility is improved and edge blemishes are reduced or prevented by applying a color filter composition including a dye and a pigment to color filters disposed on a red emitting element and a green emitting element.