Touch Control Device Supporting Part Interval Glue Overflow
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Solution Overview
Problem
The manufacturing of touch control devices faces challenges with controlling the interval between the touching layer and other element layers during gluing, leading to issues like air bubbling, excessive glue overflow, increased costs, and potential device damage.
Innovation Solution
A touch control device design that incorporates a supporting part to fix the interval between the protection and element layers, using ultraviolet light curing glue to control the glue distribution and prevent overflow, thereby ensuring uniform capacitance values and reducing the risk of glue deficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If high viscosity glue is coated on the periphery of the touching layer to prevent overflow, then glue overflow is reduced, but the interval between layers becomes difficult to control leading to air bubbling and glue deficiency
Solution Approach 1:
The patent applies preliminary action by pre-coating a thickness control layer on the touch-sensitive layer before applying the adhesive layer. This control layer is formed in advance to establish a predetermined thickness, ensuring that when the adhesive is applied, the interval between layers is precisely controlled from the start, preventing both air bubbling and glue deficiency while allowing sufficient adhesive to be applied without overflow concerns.
2Manufacturing precision
If low viscosity glue is coated directly on the touching layer and stationary set is performed to allow air bubbles to disappear, then air bubbling is reduced, but glue overflow increases requiring manual wiping
Solution Approach 1:
The thickness control layer is prepared in advance on the touch-sensitive layer before adhesive application. This pre-established controlled thickness structure ensures that when low viscosity adhesive is applied and stationary set is performed, the adhesive remains contained within the predetermined thickness boundary, allowing air bubbles to dissipate naturally without causing overflow that would require manual wiping.
3Manufacturing precision
If stationary time is extended to allow air bubbles to disappear, then air bubbling is reduced, but glue overflow increases and touch control device may get damaged
Solution Approach 1:
By pre-forming the thickness control layer with a predetermined thickness before adhesive application, the patent establishes a physical boundary that contains the adhesive during the extended stationary period. This allows sufficient time for air bubbles to disappear completely while the control layer prevents the adhesive from overflowing and damaging the touch control device, thus maintaining device integrity throughout the process.
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 effectively controls the amount of glue used, reduces the likelihood of air bubbling and overflow, decreases manufacturing costs, and minimizes damage to the touch control device by maintaining uniformity in the distribution of capacitance values.
Implementation Method 1
The material of the glue part can be ultraviolet light curing glue
Data Source
AI summary
Disclosed is a touch control device, comprising a substrate, a plurality of sensing units, an insulating layer, an electric bridge, a protection layer, a supporting part, an element layer and a glue part. A plurality of sensing units are disposed on the substrate in an interval between two of sensing units to expose portions of the substrate. The insulating layer covers the exposed substrate. The electric bridge covers the insulating layer, and two ends of the electric bridge are respectively connected to two sensing units among the plurality of sensing units. The protection layer covers the electric bridge and the sensing unit. The supporting part covers the protection layer. The element layer is disposed on the supporting part. As a result, an accommodating space is formed therebetween. The accommodating space is filled up with the glue part to glue the protection layer and the element layer.