Color Conversion Substrate With Integrated Light Shielding
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Solution Overview
Problem
Current display devices, particularly self-light emitting display devices like OLEDs, face challenges in achieving improved display quality due to limitations in color conversion and light management, leading to suboptimal color accuracy and efficiency.
Innovation Solution
A color conversion substrate with a base featuring light transmitting and shielding regions, microcavities, and wavelength conversion patterns, including wavelength shifters and light shielding members, is integrated into the display device to enhance light management and color conversion, improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a color conversion pattern or wavelength conversion pattern is placed in each pixel on a light path, then color accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions (color conversion, light shielding, and structural support) into a single integrated color conversion substrate. The substrate includes both the color conversion pattern and light shielding regions within one component, eliminating the need for separate elements and reducing overall device complexity while maintaining color accuracy.
Solution Approach 2:
The color conversion substrate serves multiple purposes simultaneously: it converts wavelengths for accurate color display, provides light shielding in specific regions, and acts as a structural base for the display device. This multi-functionality reduces the number of separate components needed.
2Measurement precision
If wavelength conversion patterns are used in microcavities, then color purity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent designs the microcavity structure and wavelength conversion pattern with matched geometries and positions that create inherent alignment tolerance. The light shielding regions are positioned to compensate for potential misalignments, ensuring that color purity is maintained even with variations in manufacturing precision.
3Measurement precision
If light shielding members are added to the display device, then lateral visibility is improved, but device complexity increases
Solution Approach 1:
The light shielding function is merged into the color conversion substrate itself through integrated light shielding regions. This eliminates the need for separate light shielding members, reducing the number of components while improving lateral visibility through controlled light management.
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 display quality by improving light efficiency, color purity, and reducing alignment tolerances between elements, resulting in better color gamut and lateral visibility compared to traditional display devices.
Implementation Method 1
a first wavelength conversion pattern in a first microcavity on the first color filter comprises a first wavelength shifter
Data Source
AI summary
A color conversion substrate includes a base including a first light transmitting region and a light shielding region around the first light transmitting region; a first color filter on the base in the first light transmitting region; a first wavelength conversion pattern in a first microcavity on the first color filter including a first wavelength shifter; and a light shielding member on the base and in the light shielding region. The first microcavity includes an open side, and the light shielding member directly contacts the first wavelength conversion pattern at the open side of the first microcavity.