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Micromechanical ultrasonic transducers and display

A display and ultrasonic technology, applied in the direction of instruments, sound-generating devices, computer components, etc., can solve the problems of not enough for gesture detection, not enough for fingerprint imaging or stylus detection, etc.

Active Publication Date: 2016-09-28
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resolution of capacitive touch screens is generally insufficient for fingerprint imaging or stylus detection, and the detection range is generally insufficient for gesture detection, because capacitive touch detection is usually limited to a distance of a few millimeters from the touch screen surface

Method used

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  • Micromechanical ultrasonic transducers and display
  • Micromechanical ultrasonic transducers and display
  • Micromechanical ultrasonic transducers and display

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Embodiment Construction

[0036]The following description is directed to certain implementations for the purposes of describing the innovative aspects of the present disclosure. However, those skilled in the art will readily recognize that the teachings herein can be applied in many different ways. The described embodiments may be implemented in any device, apparatus, or system capable of displaying images, whether in motion (eg, video) or still (eg, still images), and whether text, graphics, or pictures. More specifically, it is contemplated that the described embodiments may be included in or associated with various electronic devices such as, but not limited to, the following: mobile telephones, cellular mobile phones, mobile TV receivers, wireless devices, smart phones, Devices, Personal Data Assistants (PDAs), Wireless Email Receivers, Handheld or Laptop Computers, Netbooks, Notebook Computers, Smartbooks, Tablet Computers, Printers, Copiers, Scanners, Fax Devices, Global Positioning System (GPS...

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Abstract

An apparatus may include a one- or two-dimensional array of micromechanical ultrasonic transducer (PMUT) elements positioned below, beside, with, on, or above a backplane of a visual display. The backplane may be a thin-film transistor (TFT) backplane. The array of PMUT elements may be a piezoelectric micromechanical ultrasonic transducer (PMUT) array or a capacitive micromechanical ultrasonic transducer (CMUT) array. The PMUT array may be configurable to operate in modes corresponding to multiple frequency ranges. When operating in the low-frequency mode, the apparatus may be capable of gesture detection. A high-frequency mode may include a fingerprint sensor mode or a stylus detection mode.

Description

[0001] priority claim [0002] This application claims U.S. Provisional Patent Application No. 61 / 915,361, filed December 12, 2013, entitled "MICROMECHANICAL ULTRASONIC TRANSDUCERS AND DISPLAY," and filed on July 8, 2014 Priority to US Provisional Patent Application No. 62 / 022,140, ​​entitled "PIEZOELECTRIC ULTRASONIC TRANSDUCERS AND PROCESS," which is hereby incorporated by reference. technical field [0003] The present disclosure relates to displays including sensor elements, and more particularly to piezoelectric ultrasonic transducers suitable for use in electronic sensor arrays or interactive displays for biometric sensing, imaging, and touch or gesture recognition. Background technique [0004] Existing display touchscreens, such as Liquid Crystal Display (LCD) and Organic Light Emitting Diode (OLED) touchscreens, typically contain pixels with at least three (eg, RGB) sub-pixels and rely on overlay capacitive touch screen to detect finger touches. The resolution of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/043G06K9/00H10N30/07
CPCG06F3/043Y10T29/42G06V40/1306G06V40/20H10N30/2047H10N30/01G06F3/017B06B1/0666G06F3/0412G06F3/0436G10K9/125H10N30/07
Inventor 苏耶普拉卡什·甘蒂大卫·威廉·伯恩斯乔纳森·查尔斯·格里菲斯
Owner QUALCOMM INC
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