Display device having image pickup function and two-way communication system

• US 9,398,178 B2
• Filed: 01/31/2013
• Issued: 07/19/2016
• Est. Priority Date: 07/16/2003
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Miyagawa, Keisuke, Yamazaki, Shunpei
• Primary Examiner(s): Henn, Timothy J
• Application Number:
  US13/754,947
• Publication Number:
  US 20130147907A1
• Time in Patent Office: 1,265 Days
• US Class Current: 1/1
• CPC Class Codes: H04N 1/00129 with a display device, e.g. CRT or LCD monitor with a television apparatus H04N1/00283; arrangements for control of display devices G09G
• CPC Class Codes: H04N 1/00307 with a mobile telephone apparatus constructional features of portable telephone sets H04M1/0202; mobile radio systems H04W84/00
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 7/144 camera and display on the same optical axis, e.g. optically multiplexing the camera and display for eye to eye contact

Abstract

A compact and lightweight display device having an image pickup function and a two-way communication system which can shoot an image of a user as an object and display an image at the same time without degrading image quality by disposing a semi-transmitting mirror or the like which blocks an image on the display screen (display plane). The display device having the image pickup function includes a display panel capable of transmitting visible light at least and arranging display elements which can be controlled by voltage or current, and an image pickup device disposed around the display panel. The image pickup device is input with data of an image of a user or the like by a reflector, or equipped with a fiberscope bundling optical fibers.

Claims

1. A display device comprising:

a first substrate;

a pixel over the first substrate, the pixel comprising;

a thin film transistor; and

a pixel electrode over the thin film transistor, the pixel electrode being connected to the thin film transistor;

an organic material layer over the pixel electrode;

a second substrate over the organic material layer;

an optical system over the second substrate; and

a polarizer overlapping with the pixel,

wherein an image of an object is transmitted to an image pickup device through the first substrate, an opening in the pixel, the second substrate, and the optical system, and

wherein the polarizer includes an opening portion to transmit light.

2. The display device according to claim 1, wherein the organic material layer comprises a liquid crystal molecule.

3. The display device according to claim 1, wherein the organic material layer comprises a light-emitting layer.

4. A display device comprising:

a first substrate;

a thin film transistor over the first substrate;

a pixel electrode over the thin film transistor, the pixel electrode being connected to the thin film transistor;

an organic material layer over the pixel electrode;

a second substrate over the organic material layer;

a first polarizer beneath the first substrate;

a second polarizer over the second substrate; and

an optical system over the second polarizer,

wherein each of the first polarizer and the second polarizer includes an opening portion to transmit light, and

wherein an image of an object is transmitted to an image pickup device through the opening portion of the first polarizer, the first substrate, the second substrate, the opening portion of the second polarizer, and the optical system.

5. The display device according to claim 4, wherein the organic material layer comprises a liquid crystal molecule.

6. The display device according to claim 4, wherein the organic material layer comprises a light-emitting layer.

7. The display device according to claim 4, wherein at least one of the first polarizer and the second polarizer includes an circular polarizer.

8. A display device comprising:

a first substrate;

a thin film transistor over the first substrate;

a pixel electrode over the thin film transistor, the pixel electrode being connected to the thin film transistor;

an organic material layer over the pixel electrode;

a second substrate over the organic material layer; and

an optical system over the second substrate,

wherein the pixel electrode includes an opening portion to transmit light, and

wherein an image of an object is transmitted to an image pickup device through the first substrate, the opening portion of the pixel electrode, the second substrate, and the optical system.

9. The display device according to claim 8, wherein the organic material layer comprises a liquid crystal molecule.

10. The display device according to claim 8, wherein the organic material layer comprises a light-emitting layer.

11. The display device according to claim 8, further comprising:

a first polarizer beneath the first substrate; and

a second polarizer over the second substrate,

wherein each of the first polarizer and the second polarizer includes an opening portion to transmit light.

12. A display device comprising:

a first substrate;

a thin film transistor over the first substrate;

a pixel electrode over the thin film transistor, the pixel electrode being connected to the thin film transistor;

an organic material layer over the pixel electrode;

a colored layer over the organic material layer;

a second substrate over the organic material layer;

a first polarizer beneath the first substrate;

a second polarizer over the second substrate; and

an optical system over the second polarizer,

wherein the colored layer includes an opening portion to transmit light,

wherein each of the first polarizer and the second polarizer includes an opening portion to transmit light, and

wherein an image of an object is transmitted to an image pickup device through the opening portion of the first polarizer, the first substrate, the opening portion of the colored layer, the second substrate, the opening portion of the second polarizer, and the optical system.

13. The display device according to claim 12, wherein the organic material layer comprises a liquid crystal molecule.

14. The display device according to claim 12, wherein the organic material layer comprises a light-emitting layer.

15. The display device according to claim 12, wherein at least one of the first polarizer and the second polarizer includes an circular polarizer.

16. A display device comprising:

a first substrate;

a pixel over the first substrate, the pixel comprising;

a thin film transistor; and

a pixel electrode connected to the thin film transistor;

an organic material layer over the pixel electrode;

a second substrate over the organic material layer; and

a polarizer overlapping with the pixel,

wherein an image of an object is transmitted to an image pickup device through the first substrate, an opening in the pixel, and the second substrate, and

wherein the polarizer includes an opening portion to transmit light.

17. The display device according to claim 16, wherein the organic material layer comprises a liquid crystal molecule.

18. The display device according to claim 16, wherein the organic material layer comprises a light-emitting layer.

19. A display device comprising:

a first substrate;

a thin film transistor over the first substrate;

a pixel electrode over the thin film transistor, the pixel electrode being connected to the thin film transistor;

an organic material layer over the pixel electrode;

a second substrate over the organic material layer;

a first polarizer beneath the first substrate; and

a second polarizer over the second substrate,

wherein each of the first polarizer and the second polarizer includes an opening portion to transmit light, and

wherein an image of an object is transmitted to an image pickup device through the opening portion of the first polarizer, the first substrate, the second substrate, and the opening portion of the second polarizer.

20. The display device according to claim 19, wherein the organic material layer comprises a liquid crystal molecule.

21. The display device according to claim 19, wherein the organic material layer comprises a light-emitting layer.

22. The display device according to claim 19, wherein at least one of the first polarizer and the second polarizer includes an circular polarizer.

23. A display device comprising:

a first substrate;

a thin film transistor over the first substrate;

a pixel electrode connected to the thin film transistor;

an organic material layer over the pixel electrode; and

a second substrate over the organic material layer;

wherein the pixel electrode includes an opening portion to transmit light, and

wherein an image of an object is transmitted to an image pickup device through the first substrate, the opening portion of the pixel electrode, the second substrate.

24. The display device according to claim 23, wherein the organic material layer comprises a liquid crystal molecule.

25. The display device according to claim 23, wherein the organic material layer comprises a light-emitting layer.

26. The display device according to claim 23, further comprising:

a first polarizer beneath the first substrate; and

a second polarizer over the second substrate,

wherein each of the first polarizer and the second polarizer includes an opening portion to transmit light.

27. A display device comprising:

a first substrate;

a thin film transistor over the first substrate;

a pixel electrode connected to the thin film transistor;

an organic material layer over the pixel electrode;

a colored layer over the organic material layer;

a second substrate over the organic material layer;

a first polarizer beneath the first substrate; and

a second polarizer over the second substrate,

wherein the colored layer includes an opening portion to transmit light,

wherein each of the first polarizer and the second polarizer includes an opening portion to transmit light, and

wherein an image of an object is transmitted to an image pickup device through the opening portion of the first polarizer, the first substrate, the opening portion of the colored layer, the second substrate, and the opening portion of the second polarizer.

28. The display device according to claim 27, wherein the organic material layer comprises a liquid crystal molecule.

29. The display device according to claim 27, wherein the organic material layer comprises a light-emitting layer.

30. The display device according to claim 27, wherein at least one of the first polarizer and the second polarizer includes an circular polarizer.

31. A display device comprising:

a thin film transistor over an insulating surface;

an insulating film over the thin film transistor;

a first electrode over the thin film transistor, the first electrode being connected to the thin film transistor;

an organic material layer over the first electrode;

a second electrode over the organic material layer; and

a second substrate over the second electrode,

wherein the second electrode comprises an electrode portion and an opening portion,

wherein the electrode portion overlaps with the first electrode with the organic material layer interposed therebetween, and

wherein light transmits through the insulating surface, the organic material layer, the opening portion of the second electrode, and the second substrate.

32. The display device according to claim 31, wherein the organic material layer comprises a light-emitting layer.

33. The display device according to claim 31, wherein the second electrode comprises a material including aluminum.

34. The display device according to claim 31, wherein a color filter comprises a portion not overlapping with the opening portion.