Curved Display Coupling Member Light Blocking Layer
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Solution Overview
Problem
Curved liquid crystal display devices face issues with stains at their edges due to stress and light leakage from uncured coupling members, which affect their performance and appearance.
Innovation Solution
Incorporating a light blocking material in the coupling member, which increases its width and allows for improved UV curing, reducing stress-induced stains and preventing light leakage by ensuring the coupling member is fully cured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coupling member is made wider to reduce stress and prevent stains, then the stress resistance improves, but the device complexity increases
Solution Approach 1:
The coupling member is constructed as a composite structure comprising a base layer and a light blocking layer. The base layer provides mechanical strength and stress distribution, while the light blocking layer (containing materials such as black pigment, black resin, or metal oxide) prevents light leakage. This composite approach allows the coupling member to achieve both improved stress resistance and light leakage prevention without significantly increasing overall device complexity.
2Reliability
If UV curing is improved to prevent light leakage, then the curing completeness increases, but the manufacturing precision requirements increase
Solution Approach 1:
The light blocking layer serves as an intermediary between the UV curing process and the final product quality. By incorporating materials with high light absorption coefficients (black pigment, black resin, metal oxide), the layer ensures that UV light is effectively blocked, preventing light leakage from uncured portions. This intermediary layer reduces the stringency of curing process precision requirements, as the light blocking material provides an additional safety margin against light leakage.
3Object-generated harmful factors
If the coupling member includes light blocking material, then light leakage prevention improves, but the manufacturing complexity increases
Solution Approach 1:
The light blocking function is merged into the coupling member structure itself by forming a light blocking layer as an integral part of the coupling member. This layer can be applied directly onto the base layer during the same manufacturing process, combining the sealing function and light blocking function in a single integrated component. This merging approach prevents light leakage while minimizing the increase in manufacturing complexity.
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 effectively prevents edge stains and light leakage, enhancing the durability and visual quality of curved display devices by reducing stress on the coupling member and ensuring complete curing during the manufacturing process.
Implementation Method 1
the first sealing portion includes a light blocking material
Implementation Method 2
curing the sealant to couple the display substrate to the opposite substrate
Data Source
AI summary
A curved display device includes a display substrate which is curved in a first direction in a plan view and includes a display area including a plurality of pixels configured to display an image, and a peripheral area disposed adjacent to the display area, an opposite substrate which faces the display substrate, the opposite substrate coupled to the display substrate and curved in the first direction along the display substrate, a grayscale control layer interposed between the display substrate and the opposite substrate, and a coupling member which is disposed in the peripheral area, interposed between the display substrate and the opposite substrate, and configured to couple the display substrate to the opposite substrate, and includes a first sealing portion which extends in the first direction and includes a light blocking material.