Display Panel Bonding Layout for Full Adhesive Photocuring
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Solution Overview
Problem
Traditional display panel bonding solutions face issues with poor curing of the bonding adhesive due to the presence of black ink on the cover plate, leading to separation problems and low bonding strength, while increasing the aperture ratio of shielding ink results in visible wiring and compromises the overall black appearance.
Innovation Solution
A display panel design incorporating a second display area for decorative images, using a transparent bonding adhesive, eliminates the need for black ink on the cover plate, allowing complete photocuring and enhancing bonding strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If black ink is applied on the cover plate to achieve overall black appearance, then the aesthetic appearance is improved, but the curing of bonding adhesive is hindered resulting in poor bonding strength
Solution Approach 1:
The patent divides the cover plate into two functional regions: a first region with black ink for aesthetic appearance and a second region without black ink (transparent or white) for adhesive application and curing. This segmentation allows both appearance requirements and bonding requirements to be satisfied simultaneously.
Solution Approach 2:
Different regions of the cover plate are assigned different optical properties: the first region has black ink for aesthetic appearance while the second region has transparent or white properties to allow UV light transmission for adhesive curing. This local differentiation resolves the contradiction between appearance and bonding.
2Strength
If the aperture ratio of shielding ink is increased to improve curing area, then the curing strength is improved, but wiring becomes visible compromising the black appearance
Solution Approach 1:
The patent segments the ink coverage into two distinct areas: a first area with black ink for appearance and a second area without ink for curing. This eliminates the need to increase aperture ratio of shielding ink, as the curing area is provided by the ink-free second region instead.
Solution Approach 2:
The patent introduces a second display area as an intermediary element that serves dual purposes: it provides a transparent/white region for adhesive curing while also functioning as a decorative display area. This intermediary resolves the conflict between curing requirements and appearance requirements.
3Strength
If transparent bonding adhesive is used without black ink coverage, then complete photocuring is achieved improving bonding strength, but the traditional black appearance is compromised
Solution Approach 1:
The patent segments the cover plate into a first region with black ink for appearance and a second region without ink for adhesive application. This allows transparent bonding adhesive to be applied in the second region where it can be fully cured, while the first region maintains the black appearance.
Solution Approach 2:
The second display area serves multiple functions: it provides a transparent region for adhesive curing, acts as a decorative display area for customized images, and maintains the overall aesthetic appearance. This multi-functionality resolves the contradiction between bonding requirements and appearance 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 solution enables complete curing of the adhesive and improves bonding strength, while allowing for decorative image display, maintaining a uniform appearance without visible wiring.
Implementation Method 1
allowing complete photocuring and enhancing bonding strength
Data Source
AI summary
A display panel and a display device are provided. In the display panel, a display module includes a first display area and a second display area. The first display area is used to display video images, the second display area is used to display decorative images, and the second display area is positioned on an outer peripheral side of the first display area. A bonding adhesive is transparent and is at least pasted on the second display area, and a cover plate is pasted on the bonding adhesive. The second display area is an appearance display area.