公开(公告)号：US11910716B1

公开(公告)日：2024-02-20

申请号：US18163714

申请日：2023-02-02

申请人： QUALCOMM Incorporated

发明人： Chin-Jen Tseng ,  Jessica Liu Strohmann ,  Ila Badge ,  Shiang-Chi Lin ,  Min-Lun Yang ,  Hrishikesh Vijaykumar Panchawagh

IPC分类号： G06V40/13 ,  H10N30/00 ,  H10K59/90 ,  G06V40/12 ,  H10N39/00

CPC分类号： H10N30/10516 ,  G06V40/1306 ,  G06V40/1347 ,  H10K59/90 ,  H10N39/00

摘要： An apparatus includes an ultrasonic sensor stack, a foldable display stack that includes a display stiffener, and an additional stiffener between the ultrasonic sensor stack and the foldable display stack. The additional stiffener forms an acoustic resonator with the display stiffener and an adhesive layer between the display stiffener and the additional stiffener in order to amplify transmission of ultrasonic waves transmitted by the ultrasonic sensor stack. The additional stiffener includes a material having a high modulus of elasticity, low density, and high acoustic impedance value. In some cases, the additional stiffener includes a metal, a ceramic, a glass, or a glass ceramic. The additional stiffener increases an overall stiffness and mechanical integrity of the apparatus so that a foam backer may be omitted from the ultrasonic sensor stack.

公开(公告)号：US11798307B2

公开(公告)日：2023-10-24

申请号：US17446436

申请日：2021-08-30

申请人： QUALCOMM Incorporated

发明人： Shiang-Chi Lin ,  Hrishikesh Vijaykumar Panchawagh ,  Jessica Liu Strohmann ,  Yipeng Lu ,  Chin-Jen Tseng ,  Kostadin Dimitrov Djordjev ,  Min-Lun Yang ,  Chia-Wei Yang

IPC分类号： G06V40/13 ,  G01S7/52 ,  G06F21/32

CPC分类号： G06V40/1306 ,  G01S7/52079 ,  G06F21/32

摘要： An apparatus may include an ultrasonic sensor stack, a foldable display stack and a transmission enhancement layer. The foldable display stack may include a display stiffener and display stack layers. The display stack layers may form one or more display stack resonators configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in a first ultrasonic frequency range. In some implementations, a transmission enhancement resonator may include the display stiffener and the transmission enhancement layer. In some examples, the transmission enhancement resonator may include at least a portion of the ultrasonic sensor stack. The transmission enhancement resonator may be configured to enhance the ultrasonic waves transmitted by the ultrasonic sensor stack in the first ultrasonic frequency range.