Fingerprint sensing display apparatus

• US 10,713,459 B2
• Filed: 08/14/2018
• Issued: 07/14/2020
• Est. Priority Date: 12/29/2017
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Gong, NamYong, Kim, JinYeol, Choi, SungPil, Lee, YoungSoo
• Primary Examiner(s): Werner, Brian
• Application Number:
  US16/103,534
• Publication Number:
  US 20190205595A1
• Time in Patent Office: 700 Days
• CPC Class Codes: B06B 1/0692 with a continuous electrode on one side and a plurality of electrodes on the other side
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/1684 Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
• CPC Class Codes: G06F 1/1696 the I/O peripheral being a printing or scanning device
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06V 40/1306 non-optical, e.g. ultrasonic or capacitive sensing
• CPC Class Codes: H04R 1/028 associated with devices performing functions other than acoustics, e.g. electric candles
• CPC Class Codes: H04R 17/00 Piezoelectric transducers; Electrostrictive transducers piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners H10N30/00
• CPC Class Codes: H04R 2499/15 Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 50/87 Arrangements for heating or cooling
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/65 OLEDs integrated with inorganic image sensors
• CPC Class Codes: H10K 59/8791 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/8794 Arrangements for heating and cooling
• CPC Class Codes: H10K 77/00 Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 : Organic PV cells

Abstract

Disclosed is a display. The display device, comprising an electroluminescence display panel including a display area configured to output sound and configured to recognized a fingerprint, an ultrasonic fingerprint sensor disposed at a first area of the electroluminescence display panel and a film-type speaker disposed at a second area of the electroluminescence display panel.

Claims

1. A display device comprising:

an electroluminescence display panel including a display area configured to output sound and recognize a fingerprint;

an ultrasonic fingerprint sensor at a first area of the display area;

a cushion member surrounding the ultrasonic fingerprint sensor; and

a film-type speaker at a second area of the display area that is distinct from the first area,

wherein the cushion member is between the electroluminescence display panel and the film-type speaker.

2. The display device of claim 1, further comprising:

a support substrate positioned between the electroluminescence display panel and the ultrasonic fingerprint sensor, the support substrate positioned between the electroluminescence display panel and the film-type speaker.

3. The display device of claim 2, wherein the electroluminescence display panel is flexible and the display device further comprises:

a cured adhesive that attaches the ultrasonic fingerprint sensor to the support substrate.

4. The display device of claim 2, wherein the support substrate shields the electroluminescence display panel from light external to the display device.

5. The display device of claim 2, wherein the support substrate includes a first surface and a second surface that is below the first surface, and the cushion member is disposed on the second surface of the support substrate.

6. The display device of claim 5, further comprising:

a shield member between the support substrate and the ultrasonic finger print sensor, and between the support substrate and the film-type speaker, the shield member shielding the electroluminescence display panel from electromagnetic interference generated by the ultrasonic fingerprint sensor and the shield member shielding the ultrasonic fingerprint sensor from electromagnetic interference generated by the electroluminescence display panel.

7. The display device of claim 1, wherein the film-type speaker is configured to output sound toward the electroluminescence display panel.

8. The display device of claim 1, wherein the film-type speaker includes a plurality of speakers, each of the plurality of speakers disposed apart from each other and under the electroluminescence display panel.

9. The display device of claim 1, further comprising:

a heat-dissipation member positioned between the film-type speaker and the cushion member, the heat-dissipation member dissipating heat from the display device.

10. A display device comprising:

a cushion member that is configured to absorb impact of the display device, the cushion member comprising a first cushion portion and a second cushion portion that is spaced apart from the first cushion portion;

an ultrasonic fingerprint sensor between the first cushion portion and the second cushion portion, the ultrasonic fingerprint sensor configured to sense a fingerprint of a finger touching the display device;

a film-type speaker on a first surface of the cushion member;

a support substrate on a second surface of the cushion member that is above the first surface of the cushion member; and

an electroluminescence display panel on the support substrate, the electroluminescence display panel configured to display an image.

11. The display device of claim 10, wherein the support substrate shields the electroluminescence display panel from light external to the display device.

12. The display device of claim 10, further comprising:

a shield member between the support substrate and the ultrasonic finger print sensor, and between the support substrate and the film-type speaker, the shield member shielding the electroluminescence display panel from electromagnetic interference generated by the ultrasonic fingerprint sensor and the shield member shielding the ultrasonic fingerprint sensor from electromagnetic interference generated by the electroluminescence display panel.

13. The display device of claim 12, wherein the ultrasonic fingerprint sensor generates a signal having a frequency between 10 MHz to 15 MHz.

14. The display device of claim 10, wherein the cushion member is between the electroluminescence display panel and the film-type speaker.

15. The display device of claim 10, wherein the film-type speaker includes a plurality of speakers, each of the plurality of speakers disposed apart from each other and under the electroluminescence display panel.

16. A display device comprising:

a substrate including a display area configured to display an image and a non-display area that does not display the image;

a plurality of pixels on a first surface of the substrate in the display area;

a support substrate on a second surface of the substrate that is below the first surface of the substrate;

a cured adhesive within a first area of the display area, the adhesive on the support substrate;

an ultrasonic fingerprint sensor within the first area of the display area, the ultrasonic fingerprint sensor attached to the support substrate via the cured adhesive;

a film-type speaker within a second area of the display area that is non-overlapping with the first area of the display area, and

a cushion member between the support substrate and the film-type speaker.

17. The display device of claim 16, wherein the support substrate shields the electroluminescence display panel from light external to the display device.

18. The display device of claim 16, further comprising:

a shield member between the support substrate and the ultrasonic fingerprint sensor, and between the support substrate and the film-type speaker, the shield member shielding the ultrasonic fingerprint sensor from electromagnetic interference.

19. The display device of claim 16, wherein the film-type speaker includes a plurality of speakers, each of the plurality of speakers disposed apart from each other and under the substrate.