Resin Light Blocking Layer for Image Display Devices
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Solution Overview
Problem
Conventional liquid crystal displays face issues with reduced visual recognizability due to unnecessary light reflection from metal lines and require complex production processes, which increase the thickness and complexity of the pixel structure, affecting numerical aperture and ease of production.
Innovation Solution
The design incorporates a light blocking layer made of resin material between the glass substrate and the TFT, and a color filter on the array substrate, along with a backlight unit on the counter substrate, to reduce light reflection and simplify the production process by eliminating the need for precise positional alignment and additional light blocking elements on the counter substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional liquid crystal display structure with metal lines is used, then electrical connection is achieved, but unnecessary light reflection occurs reducing visual recognizability
Solution Approach 1:
The patent converts the harmful light reflection from metal lines into a beneficial effect by introducing a light blocking layer that selectively blocks reflected light while allowing transmitted light to pass through, thereby eliminating the harmful reflection without compromising the electrical connection function of the metal lines
Solution Approach 2:
The patent introduces a light blocking layer as an intermediary element between the metal lines and the viewer's eye. This intermediate layer selectively blocks harmful reflected light while allowing useful transmitted light to pass through, thereby resolving the contradiction between maintaining electrical connection and eliminating light reflection
2Object-affected harmful factors
If additional light blocking elements and precise positional alignment are implemented, then light reflection is reduced, but device complexity and production difficulty increase
Solution Approach 1:
The color filter layer is designed to serve multiple functions: it provides color separation for image display and simultaneously acts as a light blocking layer to prevent light reflection from metal lines. This multi-functionality eliminates the need for separate light blocking elements, thereby reducing device complexity while effectively addressing light reflection issues
3Object-affected harmful factors
If precise positional alignment and additional light blocking elements are added, then light reflection is minimized, but production process complexity increases
Solution Approach 1:
The color filter layer performs dual functions as both a color separation element and a light blocking layer. By integrating light blocking functionality into the existing color filter layer, the patent eliminates the need for separate light blocking elements and precise positional alignment processes, thereby simplifying the production process while effectively reducing light reflection
Solution Approach 2:
The patent merges the light blocking function with the color filter layer, combining two previously separate functions into a single integrated layer. This merging eliminates the need for additional production steps and precise alignment processes, thereby simplifying manufacturing while effectively addressing light reflection
4Object-affected harmful factors
If multiple layers and light blocking elements are incorporated, then light reflection is reduced, but display device thickness increases
Solution Approach 1:
The color filter layer is designed to serve multiple functions including color separation and light blocking. By integrating light blocking functionality into the existing color filter layer rather than adding separate light blocking elements, the patent effectively reduces light reflection from metal lines without increasing the overall thickness of the display device
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
This configuration enhances visual recognizability by minimizing light reflection and simplifies the production process, reducing the thickness of the display device while maintaining image quality and production efficiency.
Implementation Method 1
a light blocking layer made of resin material between the glass substrate and the TFT
Implementation Method 2
light selectively transmitted through each pixel is divided into, for example, three primary colors of RGB by a color filter provided on an optical path
Data Source
AI summary
An image display device includes a first substrate formed of a resin material; a second substrate located to face the first substrate, the second substrate being formed of a resin material having a different property from that of the first substrate; an electro-optical layer between the first substrate and the second substrate; a plurality of pixel electrodes located between the electro-optical layer and the first substrate; a plurality of switching elements electrically connected with the plurality of pixel electrodes respectively; and a color filter included in a layer between the first substrate and the plurality of switching elements.