# US 12,183,114 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,114 B2 - Document ID: US12183114B2 - Status: Granted - Kind: B2 - Application number: 17/869,661 - Filed: 2022-07-20 - Published: 2023-03-30 - Granted: 2024-12-31 - Earliest claimed: 2021-09-28 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Kyung Min Choi; Ji Hun Ryu; Su Yul Seo; Kwang Hyun Baek; Dong Hwan Lee; Won Ki Hong; Jeong An Hong - Web page: https://patentgrep.com/patent/US12183114B2 ## CPC - G06F 1/1684: {Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675} - G06V 40/1306: {non-optical, e.g. ultrasonic or capacitive sensing} - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - G06F 3/0421: {by interrupting or reflecting a light beam, e.g. optical touch-screen} - G06V 10/147: Details of sensors, e.g. sensor lenses (fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19) - G06V 40/1329: {Protecting the fingerprint sensor against damage caused by the finger} - G06V 40/1359: {Extracting features related to ridge properties; Determining the fingerprint type, e.g. whorl or loop} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract Provided is a display device comprising a display panel, a metal plate on a bottom surface of the display panel, the metal plate including a first surface facing the bottom surface of the display panel and a second surface opposite to the one surface, and a fingerprint sensor overlappingly disposed on the second surface of the metal plate, wherein the metal plate includes an indentation groove recessed in a direction toward the first surface from the second surface of the metal plate, and the fingerprint sensor is disposed on the second surface of the metal plate on which the indentation groove is formed. ## Claims ### Claim 1 A display device comprising: a display panel; a metal plate disposed on a bottom surface of the display panel, the metal plate including a first surface facing the bottom surface of the display panel and a second surface opposite to the first surface; and a fingerprint sensor overlappingly disposed on the second surface of the metal plate, wherein the metal plate includes an indentation groove recessed in a direction toward the first surface from the second surface of the metal plate, and the fingerprint sensor is disposed on the second surface of the metal plate on which the indentation groove is formed, and wherein a filling member is disposed in the indentation groove of the metal plate. ### Claim 2 (depends on 1) The display device of claim 1, wherein a thickness of the metal plate in which the indentation groove is formed is smaller than a thickness of the metal plate in which the indentation groove is not formed. ### Claim 3 (depends on 2) The display device of claim 2, wherein the thickness of the metal plate in which the indentation groove is formed is about 30% to 40% of the thickness of the metal plate in which the indentation groove is not formed. ### Claim 4 (depends on 2) The display device of claim 2, further comprising a member-sensor bonding member disposed between the fingerprint sensor and the second surface of the metal plate on which the indentation groove is formed. ### Claim 5 (depends on 4) The display device of claim 4, wherein a width of the fingerprint sensor is smaller than a width of the indentation groove. ### Claim 6 (depends on 4) The display device of claim 4, wherein the metal plate and the filling member include different materials. ### Claim 7 (depends on 6) The display device of claim 6, wherein the filling member includes acrylonitrile butadiene styrene copolymer (ABS), or polycarbonate (PC). ### Claim 8 (depends on 4) The display device of claim 4, wherein a hardness of the filling member is greater than a hardness of the member-sensor bonding member. ### Claim 9 (depends on 8) The display device of claim 8, wherein the hardness of the filling member is at least 10 20 times greater than the hardness of the member-sensor bonding member. ### Claim 10 (depends on 9) The display device of claim 9, wherein the hardness of the filling member is 0.8 Gps or more. ### Claim 11 (depends on 4) The display device of claim 4, wherein the fingerprint sensor includes an optical fingerprint sensor, and the filling member has a transmittance of 90% or more for light. ### Claim 12 (depends on 1) The display device of claim 1, wherein a roughness of the second surface of the metal plate on which the indentation groove is formed is greater than a roughness of the second surface of the metal plate on which the indentation groove is not formed. ### Claim 13 (depends on 12) The display device of claim 12, wherein the indentation groove of the metal plate is formed through an etching process. ### Claim 14 (depends on 1) The display device of claim 1, wherein the fingerprint sensor includes an ultrasonic fingerprint sensor, and the ultrasonic fingerprint sensor performs fingerprint recognition by comparing an incident ultrasonic wave incident upward from the ultrasonic fingerprint sensor with a fingerprint reflected ultrasonic wave reflected from a fingerprint. ### Claim 15 (depends on 1) The display device of claim 1, further comprising: a bonding member between the fingerprint sensor and the filling member, wherein a hardness of the filling member is greater than a hardness of the bonding member. ### Claim 16 (depends on 1) The display device of claim 1, wherein an impedance of the filling member is set within an error of about 5 MPa*m/s*10−6 of an impedance of the display panel.