Display Device Foam Pad Light Absorbing Material Edge Leakage
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Solution Overview
Problem
Liquid crystal display devices experience light leakage from the edge area due to gaps, causing visual inconvenience and requiring additional accessories and complex processes to address.
Innovation Solution
A display device design featuring a foam pad with a light-absorbing material between the display panel and middle cabinet, along with a matte surface treatment on the middle cabinet's inner surface, which absorbs and reduces light leakage by minimizing reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light absorbing material is added to the adhesive layer of the foam pad, then light leakage is reduced, but manufacturing complexity increases
Solution Approach 1:
The light absorbing material is integrated into the adhesive layer of the foam pad, merging the light absorption function with the existing adhesive component. This eliminates the need for separate light absorbing layers or additional accessories, thereby reducing light leakage without significantly increasing manufacturing complexity.
Solution Approach 2:
The foam pad with light absorbing adhesive layer serves as an intermediary component between the display panel and the middle cabinet. It absorbs stray light in the gap area, preventing light leakage while maintaining the structural function of the foam pad.
2Object-affected harmful factors
If additional accessories are used to cover the edge area, then light leakage is prevented, but device complexity and manufacturing cost increase
Solution Approach 1:
The invention extracts the light absorption function from separate accessories and integrates it into the existing foam pad component. By adding light absorbing material to the adhesive layer, the foam pad itself becomes sufficient to prevent light leakage, eliminating the need for additional edge covering accessories.
Solution Approach 2:
The foam pad is given multiple functions: it provides structural support, fills gaps, and absorbs stray light through the light absorbing adhesive layer. This multi-functionality eliminates the need for separate accessories, reducing component count and manufacturing complexity.
3Object-affected harmful factors
If the inner surface of the middle cabinet is made matte, then light reflection is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The matte surface treatment is applied locally to the inner surface of the middle cabinet that contacts the display panel. This localized treatment reduces light reflection in the critical gap area without requiring the entire cabinet surface to meet high precision matte finish requirements, thereby reducing overall manufacturing precision demands.
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 effectively reduces light leakage from the edge area, eliminating the need for additional accessories and simplifying the manufacturing process, while allowing for a larger display screen with minimized bezel area.
Implementation Method 1
The light absorbing material may absorb at least one of green and orange lights having high visibility
Implementation Method 2
an inner surface of the side wall in contact with a side surface of the display panel may be a matte surface
Data Source
AI summary
A display device according to the present invention comprises: a display panel; a middle cabinet for mounting the display panel; and a foam pad which is interposed between the display panel and the middle cabinet, and has a light absorbing material formed in either an area having a contact surface with the display panel or a contact surface with the middle cabinet. The display device of the present invention may be connected to an artificial intelligence module, a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device related to a 5G service, etc.