Display device, and vehicle-mounted display device and electronic

• US 20040201548A1
• Filed: 04/09/2004
• Published: 10/14/2004
• Est. Priority Date: 04/11/2003
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Watanabe, Yasuko, Tachimura, Yuko
• Granted Patent: US 7,400,261 B2
• Time in Patent Office: Days
• US Class Current: 345/30
• CPC Class Codes: G09G 2300/046 with an emissive area and a light-modulating area combined in one pixel
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Abstract

To provide a display device, a vehicle-mounted display device, and an electronic device whose chassis are not large with much design freedom. In the present invention, a plurality of light-emitting elements each having a luminescent material sandwiched between a pair of electrodes having transparency, a plurality of liquid crystal elements each having a liquid crystal material sandwiched between a pair of electrodes having transparency are arranged in a display device over a substrate having a mirror surface. Further, a plurality of light-emitting elements each having a luminescent material sandwiched between a pair of electrodes having transparency, a plurality of liquid crystal elements each having a liquid crystal material sandwiched between a pair of electrodes having transparency are arranged in a display device over a substrate having a reflecting surface. The display device is secured to the substrate with a barrier film therebetween.

Claims

1. A display device comprising:

a substrate having a mirror surface; and

a display means over the substrate having a mirror surface,

wherein a plurality of light-emitting elements each having a luminescent material sandwiched between a pair of electrodes having light-transmittivity are arranged in the display means.

7. A display device according to claim 1, wherein the display device is used as a side-view mirror for vehicle.

13. A display device according to claim 1, wherein the display device is used as a rearview mirror for vehicle.

19. A display device according to claim 1, wherein the display device is applied to an electronic device selected from the group consisting of a portable terminal and a PDA.

2. A display device comprising:

a substrate having a reflecting surface; and

a display means over the substrate having the reflecting surface,

wherein a plurality of light-emitting elements each having a luminescent material sandwiched between a pair of electrodes having light-transmittivity are arranged in the display means, and

wherein the display means is secured to the substrate with a barrier film therebetween.

8. A display device according to claim 2, wherein the display device is used as a side-view mirror for vehicle.

14. A display device according to claim 2, wherein the display device is used as a rearview mirror for vehicle.

20. A display device according to claim 2, wherein the display device is applied to an electronic device selected from the group consisting of a portable terminal and a PDA.

3. A display device comprising:

a substrate having a mirror surface;

a display means over the substrate having a mirror surface; and

an image sensing means over the substrate having a mirror surface,

wherein a plurality of light-emitting elements each having a luminescent material sandwiched between a pair of electrodes having light-transmittivity are arranged in the display means, and

wherein a plurality of photovoltaic conversion elements are arranged in the image sensing means.

9. A display device according to claim 3, wherein the display device is used as a side-view mirror for vehicle.

15. A display device according to claim 3, wherein the display device is used as a rearview mirror for vehicle.

21. A display device according to claim 3, wherein the display device is applied to an electronic device selected from the group consisting of a portable terminal and a PDA.

4. A display device comprising:

a substrate having a reflecting surface;

a display means over the substrate having a reflecting surface; and

an image sensing means over the substrate having a reflecting surface,

wherein a plurality of light-emitting elements each having a luminescent material sandwiched between a pair of electrodes having light-transmittivity are arranged in the display means,

wherein a plurality of photovoltaic conversion elements are arranged in the image sensing means, and

wherein the display means and the image sensing means are secured to the substrate with a barrier film therebetween.

10. A display device according to claim 4, wherein the display device is used as a side-view mirror for vehicle.

16. A display device according to claim 4, wherein the display device is used as a rearview mirror for vehicle.

22. A display device according to claim 4, wherein the display device is applied to an electronic device selected from the group consisting of a portable terminal and a PDA.

5. A display device comprising:

a substrate having a mirror surface; and

a display means over the substrate having a mirror surface,

wherein a plurality of light-emitting elements each having a liquid crystal material sandwiched between a pair of electrodes having light-transmittivity are arranged in the display means.

11. A display device according to claim 5, wherein the display device is used as a side-view mirror for vehicle.

17. A display device according to claim 5, wherein the display device is used as a rearview mirror for vehicle.

23. A display device according to claim 5, wherein the display device is applied to an electronic device selected from the group consisting of a portable terminal and a PDA.

6. A display device comprising:

a substrate having a reflecting surface; and

a display means over the substrate having the reflecting surface,

wherein a plurality of light-emitting elements each having a liquid crystal material sandwiched between a pair of electrodes having light-transmittivity are arranged in the display means, and

wherein the display means is secured to the substrate with a barrier film therebetween.

12. A display device according to claim 6, wherein the display device is used as a side-view mirror for vehicle.

18. A display device according to claim 6, wherein the display device is used as a rearview mirror for vehicle.

24. A display device according to claim 6, wherein the display device is applied to an electronic device selected from the group consisting of a portable terminal and a PDA.