Display Device Color Filter and Wavelength Conversion Pattern
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Solution Overview
Problem
Current display devices, particularly self-light emitting displays, face challenges in achieving improved display quality and reliability due to limitations in color accuracy and viewing angle performance.
Innovation Solution
The implementation of a display device structure that includes a color filter and a wavelength conversion pattern between the light emitting element and a sealing member, with a specific arrangement of support members and encapsulation layers to enhance light transmission and blocking, thereby improving color reproduction and viewing angle characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a color filter and wavelength conversion pattern are placed between the light source and viewer to achieve unique primary color display in each pixel, then color accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines the color filter layer and wavelength conversion pattern into a single integrated structure positioned between the light emitting element and the viewer. This merging approach achieves the desired color accuracy through the combined optical effects of both components while reducing device complexity by eliminating the need for separate, stacked color conversion layers.
2Reliability
If a sealing member is positioned between the display area and the first support member to improve reliability, then protection against environmental factors is enhanced, but the structural complexity increases
Solution Approach 1:
The sealing member serves as an intermediary component positioned between the display area and the first support member. It provides protective sealing against environmental factors such as moisture and oxygen, thereby enhancing reliability. The sealing member integrates into the existing structural framework without requiring additional complex support systems.
3Measurement precision
If multiple layers including encapsulation layer and color filter are stacked to improve color reproduction, then display quality is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The patent positions the color filter and wavelength conversion pattern in a specific spatial arrangement between the light emitting element and the viewer, utilizing the optical path dimension rather than simply stacking layers vertically. This dimensional approach allows for effective color reproduction while reducing the stringent alignment and positioning precision requirements that would be necessary with traditional multi-layer stacking methods.
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
This configuration enhances color accuracy and viewing angle performance, leading to improved display quality and reliability by effectively managing light transmission and absorption within the display device.
Implementation Method 1
a wavelength conversion pattern disposed on the color filter
Implementation Method 2
a color filter disposed between the second base and the encapsulation layer, where the color filter overlaps the light emitting element
Data Source
AI summary
A display device includes a first base on which a display area and a non-display area are defined; a first support member disposed on the first base and located in the non-display area; a light emitting element disposed on the first base and located in the display area; an encapsulation layer which disposed on the light emitting element; a second base disposed on the encapsulation layer; a color filter disposed between the second base and the encapsulation layer, where the color filter overlaps the light emitting element; a wavelength conversion pattern disposed on the color filter; and a sealing member disposed between the first base and the second base and located in the non-display area, where the sealing member is located between the display area and the first support member and overlaps the encapsulation layer.