SEMICONDUCTOR DEVICE

• US 20070205423A1
• Filed: 02/28/2007
• Published: 09/06/2007
• Est. Priority Date: 03/03/2006
• Status: Abandoned Application

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Kuwabara, Hideaki, Matsubara, Rie, Sakata, Junichiro, Aoyama, Tomoya, Ohshima, Kohei
• Application Number:
  US11/680,287
• Publication Number:
  US 20070205423A1
• Time in Patent Office: Days
• US Class Current: 257/89
• CPC Class Codes: H10K 19/20 comprising components having an active region that includes an inorganic semiconductor
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 2102/3031 Two-side emission, e.g. transparent OLEDs [TOLED]
• CPC Class Codes: H10K 59/00 Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/351 comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/70 OLEDs integrated with inorganic light-emitting elements, e.g. with inorganic electroluminescent elements

Abstract

It is an object to provide a thin-type full-color display device with the long lifetime, inexpensively, in which desired emission luminance and desired color purity can be obtained at a low voltage. In a light-emitting device capable of full-color display, among a plurality of light-emitting elements emitting different emission colors (for example, colors of red (R), green (G), and blue (B)), at least one of the light-emitting elements of an emission color is a light-emitting element including an organic compound (an organic EL element), and the other light-emitting element of an emission color is a light-emitting element using an inorganic material as a light-emitting layer or a fluorescent layer (an inorganic EL element). It is to be noted that the organic EL element and the inorganic EL element are formed over the same substrate.

Claims

1. A semiconductor device comprising:

a first light-emitting element for emitting a first color; and

a second light-emitting element for emitting a second color which is different from the first color,

wherein the first light-emitting element comprises an inorganic light-emitting layer or an inorganic fluorescent layer, and

wherein the second light-emitting element comprises an organic light-emitting layer having a first organic compound.

2. The semiconductor device according to claim 1, further comprising a third light-emitting element for emitting a third color which is different from the first and second colors.

3. The semiconductor device according to claim 2, wherein the third light-emitting element comprises an organic light-emitting layer having a second organic compound.

4. The semiconductor device according to claim 2, wherein the third light-emitting element comprises an inorganic light-emitting layer or an inorganic fluorescent layer.

5. The semiconductor device according to claim 1, further comprising:

a third light-emitting element for emitting a third color which is different from the first and second colors; and

a fourth light-emitting element for emitting a fourth color which is different from the first, second and third colors.

6. The semiconductor device according to claim 5, wherein the third light-emitting element comprises an organic light-emitting layer having a second organic compound and the fourth light-emitting element comprises an organic light-emitting layer having a third organic compound.

7. The semiconductor device according to claim 5, wherein the third light-emitting element comprises an inorganic light-emitting layer or an inorganic fluorescent layer and the fourth light-emitting element comprises an organic light-emitting layer having a second organic compound.

8. The semiconductor device according to claim 5, wherein the third light-emitting element comprises an inorganic light-emitting layer or an inorganic fluorescent layer and the fourth light-emitting element comprises an inorganic light-emitting layer or an inorganic fluorescent layer.

9. The semiconductor device according to claim 1, wherein each of the first and second colors is red, green, blue, white, cyan, magenta, umber, orange, or yellow.

10. The semiconductor device according to claim 2, wherein the third color is red, green, blue, white, cyan, magenta, umber, orange, or yellow.

11. The semiconductor device according to claim 5, wherein each of the third and fourth colors is red, green, blue, white, cyan, magenta, umber, orange, or yellow.

12. The semiconductor device according to claim 1, further comprising a color filter in a position through which light emission from at least one of the first and second light-emitting elements passes.

13. The semiconductor device according to claim 1, wherein the first organic compound is a triplet compound or a singlet compound.

14. The semiconductor device according to claim 3, wherein the second organic compound is a triplet compound or a singlet compound.

15. The semiconductor device according to claim 6, wherein each of the second and third organic compounds is a triplet compound or a singlet compound.

16. The semiconductor device according to claim 7, wherein the second organic compound is a triplet compound or a singlet compound.

17. The semiconductor device according to claim 1, wherein the semiconductor device is a passive matrix display device.

18. The semiconductor device according to claim 1, wherein the semiconductor device is an active matrix display device.

19. An electronic device having the semiconductor device according to claim 1, wherein the electronic device is one selected from a group consisting of a display device, a digital camera, and a mobile information terminal.

20. A semiconductor device comprising:

a first light-emitting element comprising an organic light-emitting layer having an organic compound;

a second light-emitting element;

a third light-emitting element wherein the second and third light-emitting elements share a same inorganic light-emitting layer or an inorganic fluorescent layer;

a first color filter adjacent to the second light-emitting element; and

a second color filter adjacent to the third light-emitting element, the second color filter having a different color from the first color filter.

21. The semiconductor device according to claim 20, wherein the organic compound is a triplet compound or a singlet compound.

22. The semiconductor device according to claim 20, wherein the semiconductor device is a passive matrix display device.

23. The semiconductor device according to claim 20, wherein the semiconductor device is an active matrix display device.

24. An electronic device having the semiconductor device according to claim 20, wherein the electronic device is one selected from a group consisting of a display device, a digital camera, and a mobile information terminal.

25. A semiconductor device comprising:

a first light-emitting element comprising an organic light-emitting layer having an organic compound;

a second light-emitting element comprising a first inorganic light-emitting layer or an inorganic fluorescent layer;

a third light-emitting element comprising a second inorganic light emitting layer or an inorganic fluorescent layer for emitting a same color as the first inorganic light-emitting layer or an inorganic fluorescent layer;

a first color filter adjacent to the second light-emitting element;

a second color filter adjacent to the third light-emitting element, the second color filter having a different color from the first color filter.

26. The semiconductor device according to claim 25, wherein the organic compound is a triplet compound or a singlet compound.

27. The semiconductor device according to claim 25, wherein the semiconductor device is a passive matrix display device.

28. The semiconductor device according to claim 25, wherein the semiconductor device is an active matrix display device.

29. An electronic device having the semiconductor device according to claim 25, wherein the electronic device is one selected from a group consisting of a display device, a digital camera, and a mobile information terminal.