Color Conversion Panel Using Photosensitive Resin for Display Devices
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Solution Overview
Problem
Liquid crystal displays face issues with light loss and color mixing due to polarizers and color filters, which affect display efficiency and quality.
Innovation Solution
A color conversion panel with substrate-based color conversion layers and a light blocking member, using negative type photosensitive resin, is designed to reduce light loss and prevent color mixing, featuring a blue light cutting filter, band pass filter, and assistance metal layer to enhance light emission and color purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If color filters are used in liquid crystal displays, then color reproduction is achieved, but light loss occurs and display efficiency decreases
Solution Approach 1:
The patent changes the material parameter of the filter layer from traditional color filters to a photosensitive resin layer that can be selectively removed. This parameter change allows the layer to serve dual purposes: acting as a structural support during manufacturing and then being completely removed to eliminate light loss, thereby resolving the contradiction between achieving color reproduction and minimizing light loss.
Solution Approach 2:
The patent applies the discarding principle by designing the filter layer to be completely removed after serving its temporary purpose during manufacturing. The photosensitive resin layer is discarded after the color conversion layers are formed, eliminating permanent light loss while maintaining its utility during the production process. This resolves the contradiction by temporarily using a light-blocking layer and then removing it to achieve high light transmission efficiency.
2Illumination intensity
If color filters are used in liquid crystal displays, then color reproduction is achieved, but color mixing occurs and display quality decreases
Solution Approach 1:
The patent extracts the harmful light-blocking function from the final display structure by removing the filter layer completely after manufacturing. The color filters are taken out after serving their purpose during production, eliminating the source of color mixing while maintaining color reproduction capability through the remaining color conversion layers. This resolves the contradiction between color reproduction and preventing color mixing.
Solution Approach 2:
The patent applies preliminary action by using the photosensitive resin layer to define and isolate color conversion regions during manufacturing. The layer is temporarily present to prevent color mixing during the formation process, and its preliminary protective function is sufficient to ensure color purity without requiring it to remain in the final structure, thus eliminating color mixing issues.
3Illumination intensity
If multiple color conversion layers are stacked, then color reproduction is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the functions of multiple layers into a single photosensitive resin layer that serves as both the filter layer and the structural support during manufacturing. By combining these functions, the patent simplifies the manufacturing process while still enabling the formation of multiple color conversion layers underneath, thus resolving the contradiction between improved color reproduction and reduced manufacturing complexity.
Solution Approach 2:
The photosensitive resin layer is designed to be multi-functional: it acts as a light-blocking filter during manufacturing, provides structural support for stacking color conversion layers, and serves as a pattern definition layer. This universal layer eliminates the need for separate support structures, simplifying the manufacturing process while enabling high-quality color reproduction through multiple stacked layers.
4Ease of manufacture
If traditional manufacturing processes are used for color conversion panels, then manufacturing is achieved, but manufacturing cost and time increase
Solution Approach 1:
The patent applies continuity of useful action by using the photosensitive resin layer throughout the entire manufacturing process without interruption. The layer continuously serves as a support and definition structure during all deposition and formation steps, eliminating the need for intermediate support structures or multiple manufacturing stages. This continuous utility reduces manufacturing time while maintaining feasibility, resolving the contradiction between ease of manufacture and manufacturing time.
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 improves display quality by reducing color mixing and simplifying the manufacturing process, thereby lowering costs and time, while enhancing light emission and color reproducibility.
Implementation Method 1
A material of the first, second, and third color conversion layers and the light blocking member may include a negative type photosensitive resin
Data Source
AI summary
A color conversion panel according to an exemplary embodiment of the present invention includes an substrate, first, second, and third color conversion layers on the substrate and configured to emit lights of different colors, and a light blocking member between adjacent ones of the first, second, and third color conversion layers, wherein any one of the first, second, and third color conversion layers and the light blocking member is soluble.