Interior trim part with intelligent touch function

Abstract

The invention discloses an interior trim part with the intelligent touch function. The interior trim part comprises an interior panel, a light barrier, a PCB control circuit board and a rear cover. The PCB control circuit board and the light barrier are sequentially arranged in the rear cover. The light barrier is positioned on the PCB control circuit board; the interior panel is arranged on the rear cover in a covering manner; a metal touch layer is arranged at the position, corresponding to the touch icon on the interior panel, of the reverse side of the interior panel or the front side of the light barrier; the metal touch layer further comprises capacitive touch sensing circuits corresponding to the touch icons in number and position; the capacitive touch sensing lines are made of high-temperature-resistant conductive materials, light holes are formed in the positions, corresponding to the touch icons, of the middles of the capacitive touch sensing lines, each capacitive touch sensing line is provided with a touch lead, and the touch leads are electrically connected with the PCB control circuit board through transmission lines. The interior trim part is applicable to the automobile.

Description

technical field [0001] The invention relates to the field of automobile interior decoration, in particular to an interior decoration part with intelligent touch. Background technique [0002] At present, the development of automobile HMI from physical buttons to touch buttons is accompanied by the popularization of automobile intelligent systems, and the products related to automobile interior and automobile HMI will undergo tremendous changes. We often talk about the intelligent surface of automobile interior, plastic Electric integration, the integration of electronics and interior, and other concepts. They are all inseparable from a big topic, that is, from the traditional physical button switch of the car to the current popular touch switch. [0003] The core device of the touch function in the prior art is the touch film, which is a multi-layer film structure composed of PET film (polyethylene terephthalate), nanowires and wiring. Among them, PET film is a kind of tra...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the PET film is not resistant to high temperature and high pressure, the existing touch film cannot be put into the injection molding machine and injection molded together with the interior panel, and can only be bonded and fastened to the interior with OCA glue, double-sided tape and other materials On the opposite side of the panel, the yield rate is low, and there will be problems such as air bubbles or foreign objects between the transparent film and the interior panel that will affect the touch sensitivity, and inconsistent hardening and shrinkage will cause uneven color;

[0005] 2. Since the wiring of the touch film is generally relatively short, there is a risk of bending and breaking the nanowires. When the panel and the back cover are combined, the working space is narrow, and it is difficult to connect the wiring to the control circuit board.

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