Display device with an optical sensor

1. A display device comprising:

a display panel;

a cover window disposed above the display panel;

an optical sensor, wherein at least a part of the optical sensor is disposed under the display panel;

an infrared blocking member disposed between the optical sensor and the cover window;

a first adhesive member disposed between the cover window and the display panel;

a second adhesive member disposed between the display panel and the optical sensor, the second adhesive member including a first surface facing the display panel and a second surface opposite to the first surface; and

an under-panel member disposed under the second adhesive member and comprising an opening exposing the second surface of the second adhesive member;

wherein the first adhesive member is disposed between the cover window and the infrared blocking member,

wherein at least a part of the infrared blocking member overlaps the optical sensor from above the optical sensor, and wherein a part of the display panel is disposed between the part of the infrared blocking member and the optical sensor,

wherein the under-panel member includes an upper surface facing the display panel,

wherein the first surface of the second adhesive member directly contacts the display panel, and

wherein the optical sensor and upper surface of the under-panel member directly contact the second surface of the second adhesive member.

2. The display device of claim 1 , comprising:

a display area and a non-display area outside the display area; and

a fingerprint recognition area which overlaps the optical sensor from above the optical sensor.

3. The display device of claim 2 , wherein the fingerprint recognition area is disposed in the display area.

4. The display device of claim 2 , further comprising a polarizing film disposed between the display panel and the cover window.

5. The display device of claim 4 , wherein the infrared blocking member is disposed between the polarizing film and the cover window.

6. The display device of claim 4 , wherein the display panel comprises a light emitting layer and a thin-film encapsulation layer disposed on the light emitting layer and further comprises a touch member disposed on the thin-film encapsulation layer of the display panel.

7. The display device of claim 6 , further comprising a third adhesive member disposed between the display panel and the polarizing film.

8. The display device of claim 2 , wherein the infrared blocking member comprises a material that blocks transmission of infrared light and prevents light whose center wavelength ranges from 780 nm to 2500 nm from entering the optical sensor.

9. The display device of claim 8 , wherein the infrared blocking member comprises a metal or a metal oxide.

10. The display device of claim 9 , wherein the metal or the metal oxide has a diameter of 1 nm to 100 nm.

11. The display device of claim 10 , wherein the metal or the metal oxide is nickel (Ni), chromium (Cr), niobium (Nb), tantalum (Ta), iridium (Ir), vanadium (V), or an oxide of the same.

12. The display device of claim 8 , wherein the infrared blocking member comprises at least any one of a diimmonium-based dye, a polymethine-based dye, an anthraquinone-based dye, a phthalocyanine-based dye, a naphthalocyanine-based dye, and a thiol-nickel complex.

13. A display device comprising:

a display panel;

a cover window disposed above the display panel;

an adhesive member disposed under the display panel, the adhesive member including a first surface facing the display panel and a second surface opposite to the first surface;

an under-panel member disposed under the adhesive member and comprising an opening exposing the second surface of the adhesive member across an entire length of the opening,

wherein the adhesive member bonds the under-panel member and the display panel together in one or more areas other than the opening;

an optical sensor disposed under the display panel in the opening of the under-panel member; and

an infrared blocking member disposed between the optical sensor and the second surface of the adhesive member in the opening, the infrared blocking member spaced apart from the under-panel member,

wherein at least a part of the infrared blocking member overlaps the optical sensor from above the optical sensor, and the optical sensor is disposed in the opening of the under-panel member,

wherein the under-panel member includes an upper surface facing the display panel,

wherein the first surface of the adhesive member directly contacts the display panel, and

wherein the infrared blocking member and the upper surface of the under-panel member directly contact the second surface of the adhesive member.

14. The display device of claim 13 , wherein the infrared blocking member comprises a material that blocks transmission of infrared light and prevents light whose center wavelength ranges from 780 nm to 2500 nm from entering the optical sensor.

15. The display panel of claim 13 , wherein the infrared blocking member is substantially the same length as the optical sensor across the length of the opening.