CN-122003095-A - Vibration device

CN122003095ACN 122003095 ACN122003095 ACN 122003095ACN-122003095-A

Abstract

The invention belongs to the technical field of force feedback, and particularly relates to a vibration device. The piezoelectric ceramic is arranged on one side of the main body, a first bonding pad is arranged on one side of the main body facing the piezoelectric ceramic, a second bonding pad is arranged on one side of the piezoelectric ceramic facing the main body, the first bonding pad and the second bonding pad are electrically connected, a first connecting colloid is connected between the main body and the piezoelectric ceramic, and the first connecting colloid is respectively arranged to cover the first bonding pad and the second bonding pad. Through using the vibrating device among this technical scheme, first connection colloid cladding is outside first pad and second pad for first pad and second pad are isolated with external steam, and outside steam can't contact first pad or second pad, and then avoid damaging piezoceramics, even protection piezoceramics that can be fine is not damaged under the energized state, has promoted piezoceramics's high temperature and high humidity resistant performance.

Inventors

WEI YINGYING
YU SHENGPING
JIANG CHAOYANG
MAO YONGFA

Assignees

荣成歌尔微电子有限公司

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (10)

1. A vibration device, comprising: an FPC including a main body portion; The piezoelectric ceramic is arranged on one side of the main body part, a first bonding pad is arranged on one side of the main body part, which faces the piezoelectric ceramic, a second bonding pad is arranged on one side of the main body part, which faces the piezoelectric ceramic, the first bonding pad is electrically connected with the second bonding pad, a first connecting colloid is connected between the main body part and the piezoelectric ceramic, and the first connecting colloid is respectively coated on the first bonding pad and the second bonding pad.
2. The vibration device according to claim 1, wherein the FPC further comprises two first connection portions, the two first connection portions are respectively connected to two sides of the main body portion in the first direction, the vibration device further comprises two piezoresistive sensors, the two piezoresistive sensors are respectively arranged on the two first connection portions in a one-to-one correspondence manner in an electrical connection manner, and the arrangement direction of the main body portion and the piezoelectric ceramics is intersected with the first direction.
3. The vibration apparatus according to claim 2, wherein the FPC further includes two transition portions, one of the transition portions is connected between each of the first connection portion and the main body portion, and a size of the transition portion is smaller than a size of the main body portion and smaller than a size of the first connection portion in a second direction, and an arrangement direction of the main body portion and the piezoelectric ceramics, the first direction and the second direction are disposed to intersect with each other.
4. The vibration apparatus according to claim 2, wherein the dimensions of the main body portion are larger than the dimensions of the two first connection portions, respectively, in the direction in which the main body portion and the piezoelectric ceramics are arranged.
5. The vibration apparatus according to claim 1, wherein an orthographic projection of the piezoelectric ceramic toward the main body portion is located in the main body portion along an arrangement direction of the main body portion and the piezoelectric ceramic.
6. The vibration apparatus according to claim 1, wherein the FPC further includes a second connection portion electrically connected to one side of the main body portion in a second direction, the main body portion and the piezoelectric ceramic being arranged in a direction intersecting the second direction.
7. The vibration apparatus according to claim 1, further comprising a reinforcing member attached to a side of the main body portion facing away from the piezoelectric ceramic, the reinforcing member and the main body portion being connected by a second connection colloid; and along the arrangement direction of the main body part and the piezoelectric ceramics, the orthographic projection of the main body part towards the reinforcing piece is positioned in the reinforcing piece.
8. The vibration apparatus of claim 7, wherein the reinforcement member is an alloy member or an epoxy member or a carbon fiber member.
9. The vibration apparatus of claim 7, further comprising a key cap provided on a side of the piezoelectric ceramic facing away from the main body portion, or on a side of the reinforcing member facing away from the main body portion.
10. The vibration apparatus according to claim 1, wherein two of the first pads are provided, two of the second pads are provided, and two of the first pads are electrically connected to two of the second pads in one-to-one correspondence.

Description

Vibration device Technical Field The invention belongs to the technical field of force feedback, and particularly relates to a vibration device. Background The piezoelectric ceramic is used as an electronic component and has a positive piezoelectric effect and a reverse piezoelectric effect, the piezoelectric ceramic can sense deformation under the action of the positive piezoelectric effect to generate charges to form an electric signal, the piezoelectric ceramic is electrified to generate a signal under the action of the reverse piezoelectric effect, the piezoelectric ceramic can generate deformation, and different vibration modes can be generated by different signal inputs. The piezoelectric ceramic can be widely applied to various actuators and sensors by the working modes of the positive piezoelectric effect and the inverse piezoelectric effect. The pressure sensing sensor, the piezoelectric ceramic and the driving chip form a touch feedback circuit, and when the pressure sensing sensor is lightly pressed by a finger, the sensor generates a signal and outputs the signal to the driving chip, the driving chip outputs an electric signal to the piezoelectric ceramic, the piezoelectric ceramic is driven to vibrate, and the finger senses the vibration of the piezoelectric ceramic, so that a touch feedback action is formed. The scheme using the pressure sensing sensor has the characteristics of high sensing sensitivity, small triggering force, short feedback time and the like, and can realize the functions of long-time pressing, short-time pressing, sliding and the like. The existing piezoelectric ceramics have strong hygroscopicity, and under the condition that the piezoelectric ceramics absorb certain water or vapor, the electrode of the piezoelectric ceramics is extremely easy to break down when contacting the vapor due to the relatively high voltage or electric field intensity of the working environment, so that the piezoelectric ceramics generate breakdown failure. Disclosure of Invention The invention aims to at least solve the problem that the prior piezoelectric ceramic is easy to break down during operation. The aim is achieved by the following technical scheme: A first aspect of the present invention proposes a vibration device comprising: an FPC including a main body portion; The piezoelectric ceramic is arranged on one side of the main body part, a first bonding pad is arranged on one side of the main body part, which faces the piezoelectric ceramic, a second bonding pad is arranged on one side of the main body part, which faces the piezoelectric ceramic, the first bonding pad is electrically connected with the second bonding pad, a first connecting colloid is connected between the main body part and the piezoelectric ceramic, and the first connecting colloid is respectively coated on the first bonding pad and the second bonding pad. Through using the vibrating device among this technical scheme, FPC's first pad and piezoceramics's second pad (be equivalent to piezoceramics's electrode) electricity are connected, and then drive piezoceramics through the signal of telecommunication and produce vibration feedback, wherein first connection colloid can connect FPC's main part and piezoceramics on the one hand, on the other hand first connection colloid cladding is outside first pad and second pad, make first pad and second pad and external steam carry out the isolation, outside steam can't contact first pad or second pad, and then avoid damaging piezoceramics, even protection piezoceramics that also can be fine under the energized state is not damaged, the high temperature and high humidity resistant performance of piezoceramics has been promoted, reduce the condition that piezoceramics breaks down and become invalid to appear simultaneously. In addition, the vibration device according to the present invention may have the following additional technical features: In some embodiments of the present invention, the FPC further includes two first connection portions, the two first connection portions are respectively connected to two sides of the main body portion along the first direction, the vibration device further includes two piezoresistive sensors, the two piezoresistive sensors are respectively disposed on the two first connection portions in a one-to-one correspondence manner in an electrical connection manner, and the arrangement directions of the main body portion and the piezoelectric ceramics are intersected with the first direction. In some embodiments of the present invention, the FPC further includes two transition portions, one transition portion is connected between each of the first connection portion and the main body portion, and in a second direction, a size of the transition portion is smaller than a size of the main body portion and smaller than a size of the first connection portion, and an arrangement direction of the main body portion and the piezoelectric ceramic, the first dir