Integrated smart surface structure function part and manufacturing method thereof

Abstract

The invention discloses an integrated smart surface structure function part and a manufacturing method thereof, and relates to the technical fields of in-mold decoration and touch panels. The manufacturing method of the integrated smart surface structure function part includes the steps that decoration patterns and button prompt IMD ink layers are printed on an IMD plastic thin film, then, a firstcolorless light transmission insulation ink layer is spread, then, a TP circuit layer is printed, then, a second colorless light transmission insulation ink layer is spread, then, a colorless light transmission IMD specified ink layer is printed, finally, through an IMD injection molding technology, a plastic substrate and a shaping surface thin film are connected, solidified and integrated, anda circuit of the TP circuit layer and a circuit of a flexible print circuit board (FPCB) are bound. Compared with the prior art, under the conditions that the thickness of the plastic substrate is greater than 2 mm and or is not uniform, TP sensitivity is not influenced, it is unnecessary to conduct defoaming treatment on TP adhesion, the large-area and / or multi-curved-surface integrated smart surface structure function part can be manufactured and prevent water, dust and erosion, and when the integrated smart surface structure function part is used for a long time, the TP cannot fall off or be eroded.

Description

technical field [0001] The invention relates to the field of in-mold decoration injection molding and touch panel technology, in particular to an integrated intelligent surface structure functional part and a manufacturing method thereof. Background technique [0002] The intelligent surface structure function part is a functional part that integrates the structural function and the electrical function. It not only has the support and protection function of the plastic substrate, but also forms a decorative pattern and a button prompt on the surface of the plastic substrate. When the finger touches the button At the prompt, the position of the finger can be sensed, and the sensing information is transmitted to the circuit system to complete the corresponding key operation. [0003] There are many mechanical buttons in the fields of household appliances, instrumentation and automobiles. With the development of information technology, most of these mechanical buttons and their...

AI Technical Summary

Problems solved by technology

The existing manufacturing method has the following problems: 1. The TP is attached to the back of the plastic substrate. When the thickness of the plastic substrate exceeds 2 mm, the TP will not be able to sense the touch operation, resulting in the failure to realize the function of the touch button; 2. If the thickness of the plastic substrate is not enough Uniformity will cause uneven TP induction sensitivity; 3. For large-area and / or multi-curved plastic substrates, it is difficult to defoam when TP is attached to the back; 4. IMD injection parts and TP parts are made separately, which increases the manufacturing cost. In the process link, high-priced optically transparent adhesive-OCA is used for laminating TP, and it needs to be carried out in a factory with a cleanliness of 100. The manufacturing cost of the entire product is high; 5. TP is exposed on the back of the plastic substrate, waterproof, waterproof Dust, poor anti-corrosion effect, long-term use, TP has the risk of falling off and being corroded

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