Touch Display Panel Ink Layer Ultraviolet Transmittance
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Solution Overview
Problem
In touch display devices, ultraviolet curing glue is insufficiently cured due to the presence of printing ink on the glass cover plate, which affects the curing process.
Innovation Solution
A touch display panel design that includes a first ink layer with a higher ultraviolet transmittance second sub-ink layer, positioned between the touch display module and cover plate, to enhance ultraviolet light transmission and ensure complete curing of the sealant, using a combination of ultraviolet and infrared ink layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If ultraviolet curing glue is used for frame bonding, then curing speed is improved, but curing completeness deteriorates due to ink blocking
Solution Approach 1:
The ink layer is divided into multiple sub-ink layers (first sub-ink layer, second sub-ink layer, third sub-ink layer) with different ultraviolet transmittance characteristics. The second sub-ink layer specifically has higher ultraviolet transmittance to allow curing light to reach the sealant, while other layers maintain shielding functions for metal traces.
Solution Approach 2:
Different regions of the ink layer are assigned different ultraviolet transmittance properties. The second sub-ink layer corresponding to the sealant region has higher ultraviolet transmittance, while other regions maintain lower transmittance for shielding purposes. This local differentiation resolves the contradiction between shielding requirements and curing requirements.
2Shape
If printing ink is applied to glass cover plate, then aesthetic appearance is improved, but ultraviolet light transmission deteriorates
Solution Approach 1:
The ink layer is segmented into multiple sub-layers with different functions: some layers prioritize shielding (lower transmittance) while the second sub-ink layer prioritizes ultraviolet transmission (higher transmittance). This segmentation allows simultaneous achievement of aesthetic appearance and sufficient ultraviolet light transmission for curing.
Solution Approach 2:
The ink layer exhibits spatially varying optical properties. Regions corresponding to metal trace areas have lower transmittance for shielding, while the region corresponding to the sealant has higher transmittance for curing. This local quality differentiation resolves the contradiction between aesthetic shielding and curing light transmission.
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 increased ultraviolet light transmittance of the second sub-ink layer ensures full curing of the sealant, addressing the issue of insufficient curing in conventional touch display devices.
Implementation Method 1
an ultraviolet transmittance of the second sub ink layer is greater than an ultraviolet transmittance of the first sub ink layer
Implementation Method 2
ultraviolet curing glue can be quickly cured
Data Source
AI summary
The present disclosure provides a touch display panel and a touch display device, wherein the touch display panel including a touch display module, a cover plate, a sealant and a first ink layer, the sealant disposed at a peripheral region between the touch display module and the cover plate. The first ink layer includes a first sub ink layer and a second sub ink layer, the second sub-ink layer disposed corresponding to the set region of the sealant, and an ultraviolet transmittance of the second sub ink layer is greater than an ultraviolet transmittance of the first sub ink layer.