UV Film Sensor Single Substrate Touch Screen Design
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Solution Overview
Problem
Conventional touch panel manufacturing processes result in thicker products, longer manufacturing times, decreased yield, and increased costs due to the use of multiple substrates and complex assembly procedures.
Innovation Solution
A UV film sensor is developed with a film substrate featuring a UV adhesive layer, electroplated color developing particle layer, ink layer, hardened layer, index matching layer, and transparent conductive layer, integrated directly onto the decorative film to form a touch screen with a single substrate, reducing thickness and simplifying the production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple substrates are used for touch sensor and decorative film separately, then the touch function and color molding effect can be achieved, but the product thickness increases and manufacturing complexity increases
Solution Approach 1:
The patent combines the touch sensor structure and decorative film into a single integrated UV film sensor. The transparent conductive layer forming the touch sensor is directly patterned on the UV film substrate that also provides the decorative color molding effect, eliminating the need for separate substrates and reducing overall product thickness while maintaining both touch functionality and aesthetic appearance
Solution Approach 2:
The UV film sensor substrate serves multiple functions simultaneously: it acts as the structural base for the touch sensor, provides the decorative color molding effect through electroplated particles and ink layers, and serves as the attachment surface for the clear cover glass. This multi-functionality eliminates the need for separate dedicated substrates for each function
2Reliability
If multiple substrates and assembly steps are used, then the touch sensor can be attached to the decorative film, but the manufacturing process becomes longer and more complex
Solution Approach 1:
The patent merges the touch sensor fabrication process with the decorative film manufacturing process. Both the transparent conductive layer patterning and the decorative color molding layers are formed on the same UV film substrate in an integrated sequence, eliminating multiple separate assembly steps and reducing manufacturing cycle time
Solution Approach 2:
The UV film substrate is pre-prepared with all necessary layers including the transparent conductive layer patterned in the desired touch sensor configuration, the electroplated color developing particle layers, and the ink layers. This preliminary integration allows the decorative film and touch sensor to be produced as a single unit, eliminating subsequent assembly operations
3Reliability
If multiple substrates and assembly procedures are used, then the touch screen can be assembled, but the manufacturing yield decreases and cost increases
Solution Approach 1:
The patent combines multiple manufacturing operations into a single integrated process flow on one substrate. The UV film sensor is manufactured with all functional layers and decorative elements in one continuous process, eliminating multiple handling, alignment, and bonding operations that would otherwise reduce yield and increase cost
Solution Approach 2:
The patent extracts and eliminates the intermediate assembly steps and additional substrates from the traditional manufacturing process. By producing the touch sensor and decorative film as a single integrated UV film sensor, the process removes unnecessary intermediate handling and assembly operations that contribute to yield loss and cost increase
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 results in a thinner touch screen product with improved yield and reduced costs by integrating the touch structure directly onto the UV film, eliminating the need for additional substrates and streamlining the manufacturing process.
Implementation Method 1
UV coating on the film molding electroplating screen printing of ink stripping screen printing of ink cutting visual inspection attaching with clear CG defoaming visual inspection attaching and assembling with touch sensor
Implementation Method 2
form a decorative film having a color molding effect by plating of color developing particles
Data Source
AI summary
The present disclosure provides a UV film sensor, a preparation method therefor, and a corresponding touch screen. The UV film sensor comprises a film substrate (A) containing a printing surface (a) and an attaching surface (b), and a UV adhesive layer (1), an electroplated color developing particle layer (2), an ink layer (3), a hardened layer (4), an index matching layer (5) and a transparent conducting layer (6) for constructing a touch function structure are sequentially formed on the printing surface of the film substrate from one side close to the film substrate to the other side away from the film substrate. The touch screen is obtained after adhering a cover glass to the attaching surface of the film substrate in the UV film sensor via an optical grade transparent double-sided adhesive. The obtained touch screen only contains one layer of substrate. The touch screen can be thinner as a whole. A touch function structure is directly implemented on a UV film, and compared with the traditional process, multiple processes are reduced, the product thickness is decreased, the output and yield are improved, and the costs are decreased.