Touch control device, electronic apparatus and control method of electronic apparatus

Patent metadata

Field	Value
Publication number	US-10871859-B2
Application number	US-201816049939-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Aug 1, 2017
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

A touch control device, electronic apparatus and control method thereof. The touch control device includes a processor and a plurality of transceivers disposed in an array. The transceivers is used to transmit ultrasonic waves and receive ultrasonic waves that are reflected back, and directions in which the plurality of transceivers transmits the ultrasonic waves are parallel to one another. The processor is connected to each transceiver and used to determine a touch control signal in accordance with at least one of a time difference between time at which each transceiver transmits the ultrasonic waves and time at which each transceiver receives the ultrasonic waves and an intensity difference between the transmitted and received ultrasonic waves, and to control the touch control device in accordance with the touch control signal, in which the touch control signal comprises at least one of an operation instruction and user fingerprint information.

First claim

What is claimed is:

1. A touch control device, comprising:
a plurality of transceivers disposed in an array and configured to transmit ultrasonic waves and to receive ultrasonic waves that are reflected back, wherein directions in which the plurality of transceivers transmit the ultrasonic waves are parallel to one another; and
a processor connected to each of the transceivers and configured to determine a touch control signal in accordance with at least one of a time difference between a time at which each of the transceivers transmits the ultrasonic waves and a time at which each of the transceivers receives the ultrasonic waves and an intensity difference between the transmitted and received ultrasonic waves, and to control touch control device in accordance with the touch control signal, wherein the touch control signal comprises at least one of an operation instruction and user fingerprint information,
wherein each of the transceivers comprises an ultrasonic transducer, a transfer component configured to transfer the ultrasonic waves, and bonding adhesive, and the transfer component is disposed on the side, which transmits the ultrasonic waves, of the ultrasonic transducer through the bonding adhesive,
wherein the transfer component is silica-based ceramic of which the bottom is secured to a surface of the ultrasonic transducer, a groove for transferring the ultrasonic waves is formed on the top of the silica-based ceramic, and a depth direction of the groove is the same as a transmitting direction of the ultrasonic waves, and
wherein each of the transceivers further comprises a key and conductive rubber that is disposed in the groove of the silica-based ceramic, an expansion direction of the conductive rubber is the same as the transmitting direction of the ultrasonic waves, and the key is secured to the end, away from the bottom of the silica-based ceramic, of the conductive rubber.

2. The touch control device according to claim 1 , wherein the plurality of transceivers are disposed on a surface of a display screen, a transmitting end of the transceivers faces the display screen, and the surface, on which the transceivers are disposed, is a surface that is opposite to a light-exiting surface of the display screen.

3. The touch control device according to claim 1 , wherein each of the transceivers further comprises an insulating layer that is disposed between the silica-based ceramic and the bonding adhesive.

4. The touch control device according to claim 1 , wherein the processor is configured to acquire an electrical signal of the conductive rubber and to control the ultrasonic transducer to work when the acquired electrical signal of the conductive rubber is changed.

5. The touch control device according to claim 1 , wherein the conductive rubber is filled with a carbon nano tube.

6. The touch control device according to claim 1 , configured in the electronic apparatus, wherein the processor is configured to control the plurality of transceivers to work when a preset application in the electronic apparatus is started.

7. The touch control device according to claim 1 , further comprising an infrared detection unit configured to detect whether a human body approaches the touch control device through infrared rays, wherein the processor is configured to control the plurality of transceivers to work when the infrared detection unit detects that the human body approaches the touch control device.

8. An electronic apparatus, comprising a touch control device which comprises:
a plurality of transceivers disposed in an array and configured to transmit ultrasonic waves and to receive ultrasonic waves that are reflected back, wherein directions in which the plurality of transceivers transmit the ultrasonic waves are parallel to one another; and
a processor connected to each of the transceivers and configured to determine a touch control signal in accordance with at least one of a time difference between a time at which each of the transceivers transmits the ultrasonic waves and a time at which each of the transceivers receives the ultrasonic waves and an intensity difference between the transmitted and received ultrasonic waves, and to control the electronic apparatus in accordance with the touch control signal, wherein the touch control signal comprises at least one of an operation instruction and user fingerprint information,
wherein each of the transceivers comprises an ultrasonic transducer, a transfer component configured to transfer the ultrasonic waves, and bonding adhesive, and the transfer component is disposed on the side, which transmits the ultrasonic waves, of the ultrasonic transducer through the bonding adhesive,
wherein the transfer component is silica-based ceramic of which the bottom is secured to a surface of the ultrasonic transducer, a groove for transferring the ultrasonic waves is formed on the top of the silica-based ceramic, and a depth direction of the groove is the same as a transmitting direction of the ultrasonic waves, and
wherein each of the transceivers further comprises a key and conductive rubber that is disposed in the groove of the silica-based ceramic, an expansion direction of the conductive rubber is the same as the transmitting direction of the ultrasonic waves, and the key is secured to the end, away from the bottom of the silica-based ceramic, of the conductive rubber.

9. The electronic apparatus according to claim 8 , wherein the processor is configured to determine a position that corresponds to a first transceiver as a click position when a time difference between a time at which the first transceiver in the plurality of transceivers transmits the ultrasonic waves and a time at which the first transceiver in the plurality of transceivers receives the ultrasonic waves is smaller than or equal to a set time value, and/or when an intensity difference between the transmitted and received ultrasonic waves is smaller than or equal to a set intensity value; and the processor is further configured to generate an operation instruction for indicating a click operation by a user in accordance with the click position if the click positions within a cycle or at least two continuous cycles are the same, and to generate an operation instruction for indicating a slide operation in accordance with a change order of the click position if the click positions within a cycle or at least two continuous cycles are changed.

10. The electronic apparatus according to claim 8 , wherein the processor is configured to determine a position that is in contact with ultrasonic waves transmitted by a first transceiver as a fingerprint concave portion when a time difference between a time at which the first transceiver in the plurality of transceivers transmits the ultrasonic waves and a time at which the first transceiver in the plurality of transceivers receives the ultrasonic waves is smaller than or equal to a first set time value, and/or when an intensity difference between the transmitted and received ultrasonic waves is smaller than or equal to a first set intensity value; the processor is further configured to determine the position that is in contact with the ultrasonic waves transmitted by the first transceiver as a fingerprint convex portion when the time difference between the time at which the first transceiver in the plurality of transceivers transmits and receives the ultrasonic waves is greater than the first set time value and smaller than or equal to a second set time value, and/or when the intensity difference between the transmitted and received ultrasonic waves is greater than the first set intensity value and smaller than or equal to a second set intensity value, wherein the second set time value i

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Jing Yangkun
• Guo Hongguang
• Ding Jia

Classifications

• H04M1/724631

  by limiting the access to the user interface, e.g. locking a touch-screen or a keypad · CPC title

• G06V40/1365

  Matching; Classification · CPC title

• G06V40/1306

  non-optical, e.g. ultrasonic or capacitive sensing · CPC title

• H04M1/72469 Primary

  for operating the device by selecting functions from two or more displayed items, e.g. menus or icons · CPC title

• H04M1/72463

  to restrict the functionality of the device · CPC title