18103060. ULTRASONIC FINGERPRINT SENSOR FOR UNDER-DISPLAY APPLICATIONS simplified abstract (QUALCOMM Incorporated)

ULTRASONIC FINGERPRINT SENSOR FOR UNDER-DISPLAY APPLICATIONS

Organization Name

QUALCOMM Incorporated

Inventor(s)

Hrishikesh Vijaykumar Panchawagh of Cupertino CA (US)

IIa Ravindra Badge of San Jose CA (US)

Yipeng Lu of Moraga CA (US)

Kostadin Dimitrov Djordjev of Los Gatos CA (US)

Suryaprakash Ganti of Los Altos CA (US)

Chin-Jen Tseng of Fremont CA (US)

Nicholas Ian Buchan of San Jose CA (US)

Tsongming Kao of Sunnyvale CA (US)

Leonard Eugene Fennell of San Jose CA (US)

Firas Sammoura of Dublin CA (US)

Jessica Liu Strohmann of Cupertino CA (US)

David William Burns of San Jose CA (US)

ULTRASONIC FINGERPRINT SENSOR FOR UNDER-DISPLAY APPLICATIONS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18103060 titled 'ULTRASONIC FINGERPRINT SENSOR FOR UNDER-DISPLAY APPLICATIONS

Simplified Explanation

The patent application describes a technology for an under-display ultrasonic fingerprint sensor. This sensor is designed to be placed beneath a display screen and can transmit and receive ultrasonic waves through the display.

• The display device includes a platen, a display, and an ultrasonic fingerprint sensor.
• The ultrasonic fingerprint sensor is placed beneath the display and can transmit and receive ultrasonic waves through the display.
• A light-blocking layer and/or an electrical shielding layer are placed between the ultrasonic fingerprint sensor and the display to prevent interference.
• A mechanical stress isolation layer is placed between the ultrasonic fingerprint sensor and the display to protect against mechanical stress.

Potential Applications

• Smartphones and tablets with under-display fingerprint sensors.
• Other electronic devices with displays that require fingerprint authentication.

Problems Solved

• Traditional fingerprint sensors require a separate physical button or sensor, which takes up space and disrupts the design of the device.
• Placing the fingerprint sensor under the display allows for a seamless and integrated design.
• The light-blocking and electrical shielding layers prevent interference from the display.
• The mechanical stress isolation layer protects the fingerprint sensor from damage.

Benefits

• Improved design and aesthetics of devices with under-display fingerprint sensors.
• Enhanced user experience with seamless and integrated fingerprint authentication.
• Protection against interference and damage to the fingerprint sensor.
• Increased security and convenience for users.

Original Abstract Submitted

Disclosed are methods, devices, apparatuses, and systems for an under-display ultrasonic fingerprint sensor. A display device may include a platen, a display underlying the platen, and an ultrasonic fingerprint sensor underlying the display, where the ultrasonic fingerprint sensor is configured to transmit and receive ultrasonic waves via an acoustic path through the platen and the display. A light-blocking layer and/or an electrical shielding layer may be provided between the ultrasonic fingerprint sensor and the display, where the light-blocking layer and/or the electrical shielding layer are in the acoustic path. A mechanical stress isolation layer may be provided between the ultrasonic fingerprint sensor and the display, where the mechanical stress isolation layer is in the acoustic path.