Porous Color Filter Substrate for High Purity and Thin Display
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Solution Overview
Problem
Conventional color filter substrates in LCDs require thick color filters to achieve high color purity, leading to increased power consumption and environmental impact due to reduced light transmission rates, as they need to include dispersion agents and resin that do not contribute to light filtration.
Innovation Solution
A color filter substrate with a multiple-pore support layer that allows for effective dispersion and support of pigment molecules, reducing the need for non-pigment constituents like dispersion agents and resin, thereby increasing pigment content and enabling a thinner, more efficient color filter with improved light filtration and pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the thickness of the color filter is increased to achieve high color purity, then color purity is improved, but light transmission rate decreases and power consumption increases
Solution Approach 1:
The patent employs a porous support layer containing pigment particles, where the porous structure allows light to pass through more efficiently while the pigment particles provide color filtration. This resolves the contradiction by achieving high color purity without requiring increased thickness, thereby maintaining high light transmission rate and reducing power consumption.
Solution Approach 2:
The patent uses a composite structure combining a support layer with pigment particles dispersed within pores, creating a material that simultaneously provides mechanical support, color filtration, and light transmission. This composite approach allows the color filter to achieve high color purity at reduced thickness, avoiding the power consumption penalty associated with thicker filters.
2Manufacturing precision
If the thickness of the color filter is increased to achieve high color purity, then color purity is improved, but the device body becomes thicker
Solution Approach 1:
The porous support layer enables high color purity to be achieved in a thinner configuration. The three-dimensional porous structure provides increased surface area and pigment distribution volume within a reduced thickness footprint, allowing the display device to maintain high color purity while reducing overall device body thickness.
Solution Approach 2:
The patent transitions from a conventional two-dimensional color filter structure to a three-dimensional porous structure. This dimensional change allows pigment particles to be distributed throughout the volume of the support layer, achieving high color purity without increasing the planar thickness of the color filter, thus reducing device body thickness.
3Manufacturing precision
If pigment content is increased to achieve high color purity, then color purity is improved, but light transmission rate decreases
Solution Approach 1:
The porous support layer provides a three-dimensional network that holds pigment particles while maintaining open channels for light transmission. This structure allows high pigment content to be achieved without proportionally increasing light absorption, as the porous architecture enables light to pass through the interstices between pigment particles, thereby maintaining high light transmission rate while achieving high color purity.
Solution Approach 2:
The support layer serves multiple functions simultaneously: it provides mechanical support, holds pigment particles for color filtration, and maintains light transmission pathways through its porous structure. This multi-functionality allows the system to achieve high color purity with high pigment content while preserving high light transmission rate, as the same structure that holds the pigment also facilitates light passage.
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 results in a thinner color filter substrate with high color purity and light transmission rates, reducing power consumption and environmental impact while enhancing pixel density and display brightness.
Implementation Method 1
the multiple-pore support layer comprises a plurality of pores formed therein such that the pores have a size that is greater than a size of the pigment molecules
Data Source
AI summary
The present invention provides a color filter substrate and a display device. The color filter substrate of the present invention includes a backing plate, a black matrix arranged on the backing plate, and a plurality of color resist blocks arranged on the backing plate and spaced from each other by the black matrix. The color resist blocks include a multiple-pore support layer and a color resist material distributed in the multiple-pore support layer. The color resist material includes pigment molecules. The multiple-pore support layer includes a plurality of pores formed therein such that the pores have a size that is greater than a size of the pigment molecules so as to provide effective dispersion and support of pigment molecules, allowing for reducing the amount of non-pigment constituents, such as a dispersion agent and resin, of the color resist material and increasing the content of pigment constituent to thereby improve the performance of light filtration for each unit film thickness of the color resist blocks and allow for thinning of the color filter substrate and an increased density of pixels. The display device of the present invention includes the above-described color filter substrate and shows various advantages, including wide gamut, reduced thickness, and increased brightness.