Touch Display Narrow-Bezel Bonding via Transparent Glue-Curing Region
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Solution Overview
Problem
Current touch display screens require a wider frame due to insufficient curing of frame glue caused by limited light exposure and intensity, leading to bonding issues between the display panel and touch panel.
Innovation Solution
A touch display device design where a portion of the display panel in the non-display area is made transparent to allow bottom light curing of the frame glue, increasing the area and intensity of light exposure, thus improving curing rates and allowing for a narrower frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If side-facing light curing is used for frame glue, then the display panel and touch panel can be bonded together, but the curing rate and curing depth are insufficient requiring greater frame glue width
Solution Approach 1:
The patent transitions from side-facing light curing (horizontal dimension) to bottom light curing (vertical dimension) by making the display panel transparent in the non-display area. This dimensional change allows light to penetrate through the display panel from below, significantly improving curing depth and rate while enabling narrower frame glue widths.
Solution Approach 2:
The patent applies optical property changes by making the display panel transparent in the non-display area specifically for curing purposes. This localized transparency change allows bottom light curing to occur without affecting the display functionality, as the transparent portion is confined to the non-display area.
2Reliability
If frame glue width is increased to ensure proper bonding, then bonding reliability improves, but the frame width of the box-shaped structure increases
Solution Approach 1:
By changing the light curing direction from side-facing to bottom-facing through transparency modification, the patent achieves superior curing penetration. This enables adequate bonding reliability with narrower frame glue, thus reducing overall frame width while maintaining bonding strength.
3Productivity
If bottom light curing is used through transparent portion, then curing rate and curing depth improve, but the display panel structure becomes more complex
Solution Approach 1:
The patent applies transparency modification only to the non-display area of the display panel, while the display area maintains its original opaque structure. This localized quality change enables bottom light curing without affecting the overall display panel structure or requiring complex modifications to the display functionality.
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 design enhances the curing rate of the frame glue, enabling a narrower frame width for the touch display device while reducing manufacturing complexity and time.
Implementation Method 1
a curing light passes through the non-display transparent portion to irradiate and cure the first narrow frame glue
Data Source
AI summary
A touch display device is provided. The touch display comprises a display area and a non-display area adjacent to the display area. The touch display device further comprises a display panel, a touch panel disposed opposite to the display panel, and a first narrow frame glue disposed between the display panel and the touch panel in the non-display area. The display panel comprises a non-display transparent portion corresponding to the first narrow frame glue in the non-display area.