Laser Direct Structuring Antenna Stand for Front Case Adhesion
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Solution Overview
Problem
The existing flexible printed circuit board antennas used in electronic devices have poor structural strength and weak adhesion to the front case body, leading to damage and separation during touch panel rework, increasing the cost and difficulty of rework.
Innovation Solution
Replacing flexible printed circuit board antennas with laser direct structuring antenna stands, which have higher structural strength and improved adhesion when adhered to the front case body using an adhesive, enhancing the bonding between the antenna stand and the front case body and reducing the risk of separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flexible printed circuit board antennas are used, then the antenna function is achieved, but the structural strength and adhesion to front case body are poor
Solution Approach 1:
The patent changes the material parameter from flexible printed circuit board to laser direct structuring antenna stand, which has inherently higher structural strength and adhesion properties. This material substitution resolves the contradiction by providing both the required antenna function and improved mechanical strength without compromising adhesion to the front case body.
2Ease of manufacture
If flexible printed circuit board antennas are used, then the antenna function is achieved, but the cost and difficulty of rework increase
Solution Approach 1:
By changing the material parameter to laser direct structuring antenna stand with superior adhesion strength, the patent eliminates the need for complex rework procedures. The improved adhesion prevents separation during touch panel rework, thereby reducing both the difficulty and cost of manufacturing operations while maintaining reliable antenna function.
3Reliability
If laser direct structuring antenna stand is adhered with adhesive, then the adhesion strength is improved, but the manufacturing process complexity increases
Solution Approach 1:
The patent introduces adhesive as an intermediary substance to enhance the bonding between the laser direct structuring antenna stand and the front case body. While this adds a step to the manufacturing process, the use of adhesive provides superior adhesion strength that prevents separation and damage, justifying the slight increase in process complexity through significant improvement in product reliability.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A front case of the electronic device includes: a front case body; and a laser direct structuring antenna stand as an auxiliary antenna of the electronic device. The front case body is provided with a through hole matching a shape of a feeding point of the laser direct structuring antenna stand; the laser direct structuring antenna stand is adhered to a front surface of the front case body by dispensing an adhesive, and the feeding point of the laser direct structuring antenna stand extends through the through hole to a back surface of the front case body. The arrangement can reduce the difficulty and the cost of the future rework of the touch panel, and can also reduce the risk of separation of the touch panel and the front case body.