Pixel Structure With Wavelength Conversion and Metal Grating Polarizer
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Solution Overview
Problem
Current liquid crystal displays face challenges in achieving high resolution and color contrast, necessitating innovative solutions to enhance display quality.
Innovation Solution
A pixel structure comprising a first substrate with thin film transistors, a wavelength conversion layer, and a metal grating polarizer layer, where the wavelength conversion layer converts light into specific wavelength bands, and a color filter layer improves color purity and gamut range, while a light collimating layer enhances light emission collimation and viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional liquid crystal display structures are used, then manufacturing is simpler, but resolution and color contrast are insufficient
Solution Approach 1:
The patent segments the display structure into distinct functional layers: wavelength conversion layer, metal grating polarizer layer, light collimating layer with reflection and transmission parts, and color filter layer. Each layer performs a specific optical function, enabling high resolution and color contrast through coordinated operation of segmented components
Solution Approach 2:
The patent introduces multiple dimensional considerations: the metal grating polarizer layer adds polarization dimension, the wavelength conversion layer adds spectral dimension, and the light collimating layer with its reflection and transmission parts adds spatial angle dimension. This multi-dimensional approach achieves superior display quality
2Manufacturing precision
If wavelength conversion layer is added to improve color gamut, then color rendering improves, but light transmittance may be reduced
Solution Approach 1:
The light collimating layer implements local quality by having different refractive indices in different regions: the reflection part has a first refractive index while the transmission part has a second refractive index greater than the first. This localized optical property differentiation enables both color gamut enhancement and light transmittance optimization
Solution Approach 2:
The patent changes optical parameters strategically: the wavelength conversion layer converts light wavelengths to expand color gamut, while the light collimating layer adjusts refractive indices (ratio between 0.7-0.9) to optimize light transmission efficiency, balancing color performance with brightness
3Ease of operation
If light collimating layer with reflection part is added to improve viewing angle, then emission collimation improves, but device complexity increases
Solution Approach 1:
The light collimating layer serves multiple functions simultaneously: it collimates light emission to improve viewing angle, reflects specific wavelengths to enhance color gamut, and transmits light efficiently to maintain brightness. This multi-functionality reduces the need for separate components, managing complexity while achieving multiple performance goals
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 pixel structure significantly improves light transmittance, emission efficiency, and color rendering capabilities, resulting in better display quality with broader color gamut and uniform light emission intensity.
Implementation Method 1
the wavelength conversion layer is configured to receive a light beam between the wavelength conversion layer and the first substrate and convert the light beam into a light wavelength band corresponding to the wavelength conversion layer
Implementation Method 2
the metal grating polarizer layer is disposed on the plurality of thin film transistors
Implementation Method 3
the light collimating layer further comprises a reflection part and a transmission part
Implementation Method 4
the light collimating layer further comprises a reflection part and a transmission part
Data Source
AI summary
A pixel structure includes a first substrate, a plurality of thin film transistors, a wavelength conversion layer, and a metal grating polarizer layer. The thin film transistors are disposed on an inner surface of the first substrate. The metal grating polarizer layer is disposed on the plurality of thin film transistors. The wavelength conversion layer is disposed between the inner surface of first substrate and the metal grating polarizer layer. The wavelength conversion layer is configured to receive a light beam between the wavelength conversion layer and the first substrate and convert the light beam into a light wavelength band corresponding to the wavelength conversion layer.