Fingerprint sensing display apparatus

1. A display device comprising:

an electroluminescence display panel including a fingerprint sensing area that senses a fingerprint, a display area that displays an image, and a non-display area that is adjacent to the display area;

a support substrate under the electroluminescence display panel, the support substrate configured to support the electroluminescence display panel;

a light-shield member having a first surface and a second surface below the first surface, the first surface of the light-shield member on the support substrate; and

a fingerprint sensor on the second surface of the light-shield member, the fingerprint sensor overlapping the fingerprint sensing area;

wherein the light-shield member is configured to shield the fingerprint sensor from light.

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

a cushion member on the second surface of the light-shield member and surrounding the fingerprint sensor.

3. The display device of claim 2 , wherein a portion of the light-shield member overlaps the cushion member.

4. The display device of claim 1 , wherein the light-shield member is configured to shield the display area and the non-display area from light.

5. The display device of claim 1 , wherein the light-shield member is thinner than the support substrate.

6. The display device of claim 5 , wherein the light-shield member comprises a light absorbing ink, the light absorbing ink coated on the support substrate.

7. The display device of claim 6 , wherein a thickness of the light-shield member is in a range from 8 μm to 20 μm.

8. A display device comprising:

an electroluminescence display panel including a plurality of pixels;

a support substrate positioned under the electroluminescence display panel and adhered to the electroluminescence display panel;

a light-shield member on at least a portion of the support substrate;

a fingerprint sensor under the light-shield member; and

a cured adhesive member that adheres the fingerprint sensor to the light-shield member,

wherein the light shield-member is thinner than the support substrate,

wherein the light-shield member comprises a light absorbing ink, the light absorbing ink coated on the support substrate.

9. The display device of claim 8 , wherein the light-shield member is configured to suppress a shadow-mura of the electroluminescence display panel caused by the adhered fingerprint sensor.

10. The display device of claim 9 , wherein the light-shield member reduces ultrasonic signal attenuation of the fingerprint sensor in a transmission and reception channel of the display device.

11. The display device of claim 8 , further comprising:

a cushion member positioned under the light-shield member, the cushion member including an opening,

wherein the fingerprint sensor is disposed in the opening of the cushion member.

12. The display device of claim 11 , wherein the cushion member is configured to absorb an ultrasonic output from the fingerprint sensor.

13. The display device of claim 8 , wherein the fingerprint sensor is configured to detect a fingerprint using an ultrasonic signal emitted from the fingerprint sensor with a bandwidth in a range from 10 MHz to 15 MHz.

14. The display device of claim 8 , wherein the electroluminescence display panel includes:

a substrate,

a transistor on the substrate,

an electroluminescence element on the substrate, and

an encapsulation unit on the electroluminescence element, and

wherein a portion of the substrate, a portion of the transistor, a portion of the electroluminescence element, and a portion of the encapsulation unit that overlap the fingerprint sensor are an ultrasonic transmission and reception channel for the fingerprint sensor.

15. A display device comprising:

an electroluminescence display panel including:

a flexible substrate; and

a plurality of pixels on the flexible substrate and an encapsulation unit covering the plurality of pixels; and

a transparent support substrate disposed under the electroluminescence display panel;

a light-shield member disposed under the transparent substrate;

a cushion member disposed under the transparent support substrate, the cushion member including an opening that is overlapped by the light-shield member;

an ultrasonic fingerprint sensor disposed in the opening of the cushion; and

an adhesive member disposed in the opening of the cushion without being disposed outside of the opening, the adhesive member adhering the ultrasonic fingerprint sensor to the light-shield member.

16. The display device of claim 15 , wherein the cushion member is configured to protect the ultrasonic fingerprint sensor by absorbing any possible impact from the electroluminescence display panel.

17. The display device of claim 15 , wherein the cushion member is made of a material that absorbs light.

18. The display device of claim 17 , wherein the light-shield member is a black colored polyethylene-terephthalate.

19. The display device of claim 18 , wherein the light-shield member is thinner than the transparent support substrate and the light-shield member is thinner than the cushion member.

20. The display device of claim 15 , wherein the light-shield member is configured to shield the opening of the cushion member and a rear side of the electroluminescence display panel from light.