Granted Patent B2

US 12,386,174 · App. 18/558,214 · Granted Aug 12, 2025

Inventors: Hisao Ikeda (Kanagawa, JP); Yosuke Tsukamoto (Kanagawa, JP); Kensuke Yoshizumi (Kanagawa, JP); Naoto Kusumoto (Kanagawa, JP)

Assignee: Semiconductor Energy Laboratory Co., Ltd.

G02B27/0093G02B27/0172G06F3/013G06F3/017

Abstract

Claims (31)

1. An electronic device comprising:

a display apparatus;

a lens;

a mirror;

a light source; and

an optical window,

wherein the display apparatus comprises a pixel comprising a light-emitting device and a light-receiving device over an insulating layer,

wherein the lens is between the display apparatus and the optical window,

wherein the mirror is between the lens and the optical window to have a reflective surface on the optical window side,

wherein the light source is provided at a position overlapping with neither the display apparatus nor the optical window so that emitted light is incident obliquely on the reflective surface of the mirror,

wherein the emitted light reflected at the mirror is incident on a target object through the optical window, and

wherein light reflected by the target object enters the display apparatus through the optical window and the lens.

2. The electronic device according to claim 1 , further comprising a light-transmitting plate between the lens and the optical window,

wherein the mirror is on a surface of the light-transmitting plate.

3. The electronic device according to claim 1 ,

wherein the mirror is on a surface of the lens.

4. The electronic device according to claim 1 , wherein the mirror is a dielectric multilayer film transmitting visible light and reflecting infrared light.

5. The electronic device according to claim 1 , wherein the light source is a laser device or a light-emitting diode emitting infrared light.

6. The electronic device according to claim 1 , wherein the optical window is a lens.

7. The electronic device according to claim 1 , wherein the light-receiving device comprises a photoelectric conversion layer comprising an organic compound.

8. The electronic device according to claim 1 , wherein the light-receiving device has a light-receiving sensitivity peak in an infrared light range.

9. The electronic device according to claim 1 , further comprising a filter blocking visible light at a portion overlapping with the light-receiving device.

10. The electronic device according to claim 1 ,

wherein the light-emitting device comprises a first electrode over the insulating layer, a second electrode, and an EL layer between the first electrode and the second electrode, and

wherein the light-receiving device comprises a third electrode over the insulating layer, the second electrode, and an active layer between the third electrode and the second electrode.

11. The electronic device according to claim 1 ,

wherein the target object is a user's eyeball or eyelid, and

wherein the electronic device is configured to detect a blinking action or a movement of the eyeball.

12. The electronic device according to claim 11 , wherein the electronic device is configured to estimate a user's fatigue level or perform an input operation with detection of the blinking action or the movement of the eyeball.

13. A goggle-type electronic device comprising two electronic devices in a housing, each of the electronic devices being the electronic device according to claim 1 .

14. The electronic device according to claim 1 , wherein the reflected light is detected by the light-receiving device.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (29)