Bonding Unit Segmentation for Narrow Bezel and Light Leakage Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display devices face challenges in narrowing the non-image display area to widen the image display area while maintaining adhesive strength and preventing light leakage from the bonding surface between the image display unit and the light source unit.
Innovation Solution
An image display device configuration that includes a bonding unit with a transmissive section for light transmission and a light-blocking section on the periphery, using optical clear adhesive to attach the image display unit and light source unit, ensuring the light-blocking section overlaps the non-image display area to maintain adhesive strength and prevent light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the non-image display area is narrowed to widen the image display area, then the image display area proportion increases, but the adhesive strength between the image display unit and light source unit decreases
Solution Approach 1:
The bonding unit is segmented into a transmissive section (for light transmission) and a light-blocking section (for preventing light leakage). This segmentation allows the light-blocking section to be positioned in the non-image display area while maintaining sufficient adhesive bonding area in the transmissive section, thus resolving the contradiction between narrowing the non-image display area and maintaining adhesive strength.
Solution Approach 2:
Different sections of the bonding unit have different functional properties: the transmissive section has high light transmission property for optimal light delivery, while the light-blocking section has high light blocking property to prevent leakage. This local differentiation of properties allows the bonding unit to simultaneously achieve good adhesive strength and effective light blocking in the narrowed non-image display area.
2Area of moving object
If the non-image display area is narrowed, then the image display area proportion increases, but light leakage from the bonding surface becomes more problematic
Solution Approach 1:
The bonding unit is divided into transmissive and light-blocking sections, allowing the light-blocking section to be strategically positioned in the non-image display area where light leakage would otherwise occur. This segmentation enables effective light leakage prevention even as the non-image display area is narrowed.
Solution Approach 2:
The light-blocking section converts the potentially harmful light leakage into a beneficial feature by strategically blocking light in the non-image display area. The light that would otherwise leak and create unwanted glare or visible seams is instead blocked, and the bonding unit's light-blocking property becomes a feature that enhances display quality.
3Object-generated harmful factors
If rim tape is disposed inside the non-image display area to prevent light leakage, then light blocking is achieved, but the adhesive strength is compromised
Solution Approach 1:
The bonding unit is segmented into transmissive and light-blocking sections with distinct functions. The light-blocking section prevents light leakage while the transmissive section maintains adhesive bonding. This segmentation allows the light-blocking function to be achieved without compromising the adhesive strength, as the transmissive section provides sufficient bonding area.
Solution Approach 2:
Different sections of the bonding unit have different properties: the light-blocking section provides light blocking functionality while the transmissive section provides adhesive bonding functionality. This local differentiation of properties allows the bonding unit to simultaneously achieve light leakage prevention and maintain adhesive strength, resolving the contradiction between these two requirements.
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 configuration allows for a narrower non-image display area without compromising adhesive strength, effectively preventing light leakage and enhancing the image display area to light source unit attachment reliability.
Implementation Method 1
a transmissive section (31) that transmits the light emitted from the light source unit (20) to the image display unit (10)
Implementation Method 2
a peripheral section (32) disposed on outer edges of the transmissive section (31) that does not transmit the light emitted from the light source unit (20)
Implementation Method 3
a bonding unit (30) that bonds the image display unit (10) and the light source unit (20) to each other, and includes a transmissive section (31) that transmits the light emitted from the light source unit (20) to the image display unit (10)
Data Source
AI summary
An image display device includes: an image display unit; a light source unit illuminating the image display unit with light; and a bonding unit bonding the image display unit and the light source unit to each other, the bonding unit having adhesive properties, attaching the image display unit to the light source unit, and including a transmissive section that transmits the light emitted from the light source unit to the image display unit, and a peripheral section disposed on outer edges of the transmissive section that does not transmit the light emitted from the light source unit.