公开(公告)号：US20170110504A1

公开(公告)日：2017-04-20

申请号：US15292057

申请日：2016-10-12

Applicant: QUALCOMM Incorporated

Inventor： Hrishikesh Vijaykumar Panchawagh ,  Suryaprakash Ganti ,  Kostadin Dimitrov Djordjev ,  David William Burns ,  Timothy Alan Dickinson ,  Donald William Kidwell, JR. ,  Ravindra Vaman Shenoy ,  Jon Bradley Lasiter ,  Hao-Yen Tang ,  Yipeng Lu

IPC: H01L27/20 ,  H01L27/12 ,  G06F3/043 ,  G01S7/52 ,  G06K9/00 ,  H01L41/113 ,  H01L41/311

CPC classification number: H01L27/20 ,  B06B1/0207 ,  B06B1/0607 ,  G01S7/52028 ,  G06F3/0436 ,  G06K9/0002 ,  H01L27/1214 ,  H01L41/311

Abstract: An ultrasonic sensor pixel includes a substrate, a piezoelectric micromechanical ultrasonic transducer (PMUT) and a sensor pixel circuit. The PMUT includes a piezoelectric layer stack including a piezoelectric layer disposed over a cavity, the cavity being disposed between the piezoelectric layer stack and the substrate, a reference electrode disposed between the piezoelectric layer and the cavity, and one or both of a receive electrode and a transmit electrode disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity. The sensor pixel circuit is electrically coupled with one or more of the reference electrode, the receive electrode and the transmit electrode and the PMUT and the sensor pixel circuit are integrated with the sensor pixel circuit on the substrate.

公开(公告)号：US20150165479A1

公开(公告)日：2015-06-18

申请号：US14569256

申请日：2014-12-12

Applicant: QUALCOMM Incorporated

Inventor： Jon Bradley Lasiter ,  Ravindra Vaman Shenoy ,  Evgeni Petrovich Gousev ,  Hrishikesh Panchawagh ,  David William Burns ,  Nai-Kuei Kuo ,  Jonathan Charles Griffiths ,  Suryaprakash Ganti

IPC: B06B1/06 ,  H01L41/31 ,  G10K9/125

CPC classification number: B06B1/0666 ,  G06F3/0412 ,  G06F3/043 ,  G06F3/0436 ,  G06K9/0002 ,  G06K9/00335 ,  G10K9/125 ,  H01L41/0973 ,  H01L41/22 ,  H01L41/31 ,  Y10T29/42

Abstract: A piezoelectric micromechanical ultrasonic transducer (PMUT) includes a multilayer stack disposed on a substrate. The multilayer stack may include an anchor structure disposed over the substrate, a piezoelectric layer stack disposed over the anchor structure, and a mechanical layer disposed proximate to the piezoelectric layer stack. The piezoelectric layer stack may be disposed over a cavity. The mechanical layer may seal the cavity and, together with the piezoelectric layer stack, is supported by the anchor structure and forms a membrane over the cavity, the membrane being configured to undergo one or both of flexural motion and vibration when the PMUT receives or transmits ultrasonic signals.

Abstract translation: 压电微机械超声换能器（PMUT）包括设置在基板上的多层堆叠。 多层堆叠可以包括设置在衬底上的锚结构，设置在锚结构上的压电层堆叠，以及靠近压电层堆叠设置的机械层。 压电层堆叠可以设置在空腔上。 机械层可以密封空腔，并且与压电层堆叠一起由锚结构支撑并且在空腔上形成膜，该膜被配置为当PMUT接收或传输时经历挠曲运动和振动中的一个或两个 超声信号。

公开(公告)号：US20140355376A1

公开(公告)日：2014-12-04

申请号：US14291208

申请日：2014-05-30

Applicant: QUALCOMM Incorporated

Inventor： John K. Schneider ,  Jack C. Kitchens ,  Stephen M. Gojevic ,  Timothy A. Dickinson ,  Samir K. Gupta ,  Kostadin D. Djordjev ,  David William Burns ,  Leonard E. Fennell ,  Suryaprakash Ganti

IPC: G01S7/56 ,  G01S15/02

CPC classification number: G01S7/56 ,  G01S15/02 ,  G06F3/043

Abstract: A display device has a visual display capable of providing an image and an ultrasonic sensor array attached to a backside component of the visual display. The ultrasonic sensor array may be an ultrasonic area array sensor. For example, the backside component may be a backlight, an optical waveguide, or a display TFT.

Abstract translation: 显示装置具有能够提供图像的视觉显示器和附接到视觉显示器的后侧部件的超声波传感器阵列。 超声波传感器阵列可以是超声波区域阵列传感器。 例如，背面部件可以是背光，光波导或显示TFT。

公开(公告)号：US20140354608A1

公开(公告)日：2014-12-04

申请号：US14137474

申请日：2013-12-20

Applicant: Qualcomm Incorporated

Inventor： Jack Conway Kitchens, II ,  John Keith Schneider ,  David William Burns ,  Suryaprakash Ganti

IPC: G06F1/32 ,  G06F3/01

CPC classification number: G06F3/0412 ,  G01S7/52085 ,  G02F1/13338 ,  G02F1/133514 ,  G02F2201/52 ,  G06F1/3215 ,  G06F3/02 ,  G06F3/0414 ,  G06F3/0416 ,  G06F3/042 ,  G06F3/0421 ,  G06F3/043 ,  G06F3/044 ,  G06F2203/04106 ,  G06K9/0002 ,  G06K9/0004 ,  G06K9/6293 ,  H01H2219/066 ,  H04N5/33

Abstract: A method is disclosed, including detecting a signal representative of an object with a piezoelectric device. A display is powered up from a sleep mode based upon the detected signal. The display can be powered up based upon a comparison of the signal to a threshold value. The threshold value can be a predetermined value or based upon a previous signal detected by the piezoelectric device or a previous signal detected by the piezoelectric device.

Abstract translation: 公开了一种方法，包括用压电装置检测表示物体的信号。 基于检测到的信号，显示器从休眠模式被加电。 可以基于信号与阈值的比较来对显示器进行加电。 阈值可以是预定值，或者基于由压电器件检测到的先前信号或由压电器件检测到的先前信号。