Transflective Filter Structure for High Transmittance Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional color filter substrates in display devices, such as LCDs and OLEDs, suffer from low transmittance, high power consumption, and poor color purity due to excessive light absorption and spectral issues, failing to meet demands for high color gamut and true color restoration.
Innovation Solution
A filter structure comprising a first and second transflective layer with a transparent film in between, where the refractive index of the transparent film is smaller than the transflective layers, allowing specific wavelength light to be transmitted with a transmittance of at least 90% and a narrower spectrum by adjusting the thickness and refractive indices of the transflective layers and the transparent film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional color filter substrates are used to implement color display, then color display function is achieved, but transmittance is low and power consumption is high
Solution Approach 1:
The patent changes the optical parameters (refractive index and thickness) of the transparent film and transflective layers to achieve high transmittance for specific wavelengths. By optimizing these parameters, the filter structure enables >90% transmittance for target colors while blocking others, thereby reducing power consumption without sacrificing display performance
Solution Approach 2:
The patent employs a composite multi-layer structure consisting of transparent films and transflective layers with different refractive indices. This composite structure combines the advantages of each layer to achieve both high transmittance for specific wavelengths and effective filtering of others, resolving the contradiction between energy efficiency and illumination intensity
2Manufacturing precision
If traditional color filter substrates are used, then color display is achieved, but color purity is poor due to excessive light absorption and spectral issues
Solution Approach 1:
The patent applies local quality by designing the transparent film and transflective layers to have specific optical properties at specific wavelengths. The structure is optimized to provide high transmittance locally at target wavelengths (red, green, blue) while providing strong absorption or reflection at other wavelengths, thereby achieving high color purity without excessive overall light absorption
Solution Approach 2:
The patent segments the spectral filtering function into multiple layers with different optical characteristics. Each layer (transparent film and transflective layer) contributes to the overall spectral shaping, allowing precise control over which wavelengths are transmitted and which are blocked, thus improving color purity while minimizing energy loss
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 transmittance and spectral narrowness, reducing power consumption and improving color purity, enabling high color gamut and true color display.
Implementation Method 1
a filter structure, which includes a first transflective layer; a second transflective layer opposite to the first transflective layer, a refractive index of the second transflective layer being substantially the same as a refractive index of the first transflective layer; and a transparent film located between the first transflective layer and the second transflective layer
Data Source
AI summary
The present disclosure provides a filter structure, a filter layer and a display panel. The filter structure includes a first transflective layer, a second transflective layer and a transparent film between the first transflective layer and the second transflective layer. The filter structure is configured to make light of a specific wavelength range in incident light incident from the first transflective layer into the filter structure be emergent from the second transflective layer by adjusting at least one of a thickness and the refractive index of the transparent film, a thickness and the refractive index of the first transflective layer, and a thickness and the refractive index of the second transflective layer, and make a transmittance of the light of the specific wavelength range be not less than 90%, by adjusting at least one of the thickness, the refractive index, and an extinction coefficient of the second transflective layer.