Touch Frame Integrating PCB and Light Filter
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Solution Overview
Problem
Existing touch screens have complex outer frame structures, high manufacturing costs, and low installation efficiency due to complicated assembly processes.
Innovation Solution
A touch frame with an outer frame featuring an accommodating groove and a light filtering member with an accommodating cavity, where the printed circuit board is installed within the cavity, simplifying the structure and reducing manufacturing costs while preventing damage and short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the printed circuit board is arranged on four sides of the screen with separate mounting structures, then the infrared emitting and receiving tubes can be electrically connected to form an infrared matrix, but the outer frame structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The patent combines the printed circuit board mounting structure with the light filtering member into a single integrated component. The light filtering member serves dual functions: filtering light and providing a mounting platform for the printed circuit board, thereby eliminating the need for separate mounting structures and simplifying the overall frame structure.
Solution Approach 2:
The light filtering member is designed to perform multiple functions simultaneously: it acts as a light filtering element, a structural support component, and a mounting platform for the printed circuit board. This multi-functionality reduces the total number of components needed in the system.
2Ease of manufacture
If separate mounting structures are used for the printed circuit board and light filtering member, then each component can be independently manufactured, but installation time and labor increase significantly
Solution Approach 1:
The printed circuit board mounting structure is merged with the light filtering member to form an integrated assembly. This integration allows the components to be manufactured independently but assembled as a single unit during installation, reducing installation time and labor while maintaining manufacturing flexibility.
3Reliability
If the printed circuit board is mounted on the outer frame with traditional structures, then electrical connections can be established, but the structure lacks stability and is prone to mechanical vibrations
Solution Approach 1:
The mounting structure for the printed circuit board is merged with the light filtering member, creating a more stable and integrated assembly. This integration enhances structural stability and reduces mechanical vibrations by eliminating separate mounting components and their associated connection points.
Data Source
AI summary
A touch frame and a touch screen having the same. The touch frame includes an outer frame, a light filtering member, and a printed circuit board. The outer frame has an accommodating groove having at least one groove opening, and the light filtering member is arranged in the accommodating groove. The light filtering member is provided with an accommodating cavity, and a part of the light filtering member extending to the groove opening of the accommodating groove is a light filtering portion. The printed circuit board is arranged in the accommodating cavity. A light receiving/transmitting device is provided on the printed circuit board, and the light receiving/transmitting device is directly opposite to the light filtering portion.