Display Panel Absorption Layers for High-Contrast Black Display
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Solution Overview
Problem
Existing display panels face issues with impaired black display and reduced contrast due to external light interference, leading to inconvenience and reliability concerns.
Innovation Solution
Incorporating a first absorption layer that overlaps with a display element to absorb and convert first light into second light with a higher long-wavelength spectrum, and a color conversion layer to convert and absorb specific wavelengths, ensuring high contrast and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional display panel structure is used, then the device complexity is low, but the display contrast and black display quality are impaired due to external light interference
Solution Approach 1:
The display panel is segmented into multiple functional layers including a first absorption layer, a color conversion layer, and a second absorption layer. Each layer performs a specific function: the first absorption layer absorbs external light in the blue region, the color conversion layer converts blue light to yellow-green light, and the second absorption layer absorbs external light in the yellow-green region. This segmentation allows targeted management of different wavelength regions to improve display contrast without excessive overall complexity.
Solution Approach 2:
The color conversion layer acts as an intermediary between the first and second absorption layers. It converts the blue light absorbed by the first absorption layer into yellow-green light, which then interacts with the second absorption layer. This intermediary conversion process enables the panel to manage external light interference more effectively while maintaining display quality.
2Reliability
If absorption layers are added to block external light, then the black display quality improves, but the device complexity increases
Solution Approach 1:
Rather than using a single uniform absorption layer across the entire spectrum, the invention employs two distinct absorption layers with different spectral characteristics. The first absorption layer targets the blue region where external light interference is most problematic, while the second absorption layer targets the yellow-green region. This local quality approach allows each layer to be optimized for its specific wavelength range, improving black display quality without requiring a single complex omnibus solution.
Solution Approach 2:
The display panel uses a composite structure combining multiple materials with different optical properties. The first absorption layer uses materials optimized for blue light absorption, the color conversion layer uses phosphor materials for wavelength conversion, and the second absorption layer uses materials for yellow-green light absorption. This composite material approach enables targeted control of different spectral regions, improving reliability while managing complexity through material specialization.
3Object-affected harmful factors
If the first absorption layer absorbs first light, then external light interference is reduced, but the first color conversion layer receives less first light for conversion
Solution Approach 1:
The invention converts the potentially harmful effect of the first absorption layer blocking first light into a beneficial outcome. By strategically positioning the color conversion layer between the first and second absorption layers, the design ensures that the first absorption layer blocks harmful external blue light while the color conversion layer efficiently converts the necessary first light into yellow-green light. The second absorption layer then manages the converted light, transforming what could be a loss into a controlled spectral management system that improves overall display 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 enhances display panels by inhibiting external light interference, maintaining high contrast, and enabling vivid full-color display with improved reliability.
Implementation Method 1
the first absorption layer absorbs the first light
Implementation Method 2
the first color conversion layer converts the first light into second light; the second light has a spectrum including a high proportion of light with a long wavelength compared with the first light
Implementation Method 3
the first absorption layer absorbs the first light and third light; the third light has a spectrum including a high proportion of light with a long wavelength compared with the second light
Implementation Method 4
the first color conversion layer converts the first light into the second light and the third light
Data Source
AI summary
A novel display panel that is highly convenient or reliable is provided. The display panel includes a first pixel; the first pixel includes a first display element, a first color conversion layer, and a first absorption layer; the first display element emits first light; the first absorption layer overlaps with the first display element; and the first absorption layer absorbs the first light. Furthermore, the first color conversion layer is sandwiched between the first display element and the first absorption layer; the first color conversion layer converts the first light into second light; and the second light has a spectrum including a high proportion of light with a long wavelength compared with the first light.