Portable electronic device

• US 8,405,790 B2
• Filed: 04/04/2011
• Issued: 03/26/2013
• Est. Priority Date: 08/23/2000
• Status: Expired due to Term

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Okamoto, Satoru, Yamazaki, Shunpei
• Primary Examiner(s): DUONG, THOI V
• Application Number:
  US13/079,552
• Publication Number:
  US 20110181537A1
• Time in Patent Office: 722 Days
• Field of Search: 349/12, 349/69, 349/38, 349/43, 349/138, 349/149, 349/151, 345/173
• US Class Current: 349/48
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 2203/02 reflective
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1637 Details related to the display arrangement, including those related to the mounting of the display in the housing
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/1647 including at least an additional display G06F1/1692 takes precedence
• CPC Class Codes: G06F 1/1684 Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
• CPC Class Codes: G06F 1/1686 the I/O peripheral being an integrated camera
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• 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
• CPC Class Codes: G09G 5/22 characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
• CPC Class Codes: H04M 1/0214 Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0247 comprising more than two body parts
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04M 2250/16 including more than one display unit
• CPC Class Codes: H04M 2250/22 including a touch pad, a touch sensor or a touch detector
• CPC Class Codes: H10K 59/12 : Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/40 : OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/65 : OLEDs integrated with inorganic image sensors

Abstract

When image data is displayed on the display portion of a conventional mobile telephone, characters cannot be displayed thereon, and thus the image data and the characters cannot be simultaneously displayed. In a portable electronic device according to the present invention, a cover member having a first display device (101) for displaying an image (digital still image or the like) and a second display device (102) having a touch input operational portion (for displaying characters, symbols, or the like) are attached to each other so as to allow opening and closing.

Claims

1. A portable electronic device comprising:

an EL display device comprising a touch input tablet and a detection circuit and a pixel, and

wherein the pixel comprises at least an EL element, a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, and a capacitor,

wherein the EL element comprises at least a first electrode, an EL layer and a second electrode,

wherein banks are formed at both ends of the first electrode,

wherein the EL layer is formed on the first electrode and the banks,

wherein a part of the EL layer overlaps the banks, and

wherein the part of the EL layer overlaps the second electrode,.

2. A portable electronic device according to claim 1, wherein the EL display device comprises one of the thin film transistors comprising a semiconductor layer of polysilicon.

3. A portable electronic device according to claim 1, wherein the portable electronic device has a communication function.

4. A portable electronic device according to claim 1, further comprising a CPU electrically connected with the EL display device, and

wherein the CPU is electrically connected with the detection circuit.

5. A portable electronic device according to claim 1, further comprising a CPU electrically connected with the EL display device;

a flash memory electrically connected with the CPU.

6. A portable electronic device according to claim 1, further comprising a CPU electrically connected with the EL display device, and

wherein the CPU includes an image signal processing circuit, and a tablet interface for inputting a signal from the touch input tablet.

7. A portable electronic device according to claim 1, wherein the EL display device comprises a system for identifying a user.

8. A portable electronic device according to claim 1, wherein one of the thin film transistors is an n-channel thin film transistor.

9. A portable electronic device according to claim 1, wherein the EL display device comprises a photo diode.

10. A portable electronic device according to claim 1, further comprising a second EL display device operationally connected to the EL display device.

11. A portable electronic device according to claim 1, wherein the touch input tablet and the detection circuit are integrally formed in an inner portion of the EL display device.

12. A portable electronic device according to claim 1, wherein the touch input tablet is integrally formed in the inner portion of the EL display device.

13. A portable electronic device according to claim 1, wherein the EL display device is a light emitting device for emitting light upward.

14. A portable electronic device according to claim 1, wherein the EL display device is a light emitting device for emitting light downward.

15. A portable electronic device according to claim 1, further comprising a driver circuit,

wherein the driver circuit, and the five thin film transistors are formed on the same substrate, and

wherein the banks overlap the driver circuit.

16. A portable electronic device according to claim 1, further comprising a sixth thin film transistor is formed in the pixel.

17. A portable electronic device comprising:

an EL display device comprising a touch input tablet and a detection circuit and a pixel, and wherein the EL display device comprises at least a first EL element for emitting a green light, a second EL element for emitting a red light, a third EL element for emitting a blue light, a a pixel electrode, a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, and a capacitor,

wherein the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, the fifth thin film transistor and the capacitor are formed in the pixel.

18. A portable electronic device according to claim 17, wherein the EL display device comprises one of the thin film transistors comprising a semiconductor layer of polysilicon.

19. A portable electronic device according to claim 17, wherein the portable electronic device has a communication function.

20. A portable electronic device according to claim 17, further comprising a CPU electrically connected with the EL display device, and

wherein the CPU is electrically connected with the detection circuit.

21. A portable electronic device according to claim 17, further comprising a CPU electrically connected with the EL display device;

a flash memory electrically connected with the CPU.

22. A portable electronic device according to claim 17, further comprising a CPU electrically connected with the EL display device, and

wherein the CPU comprises an image signal processing circuit, and a tablet interface for inputting a signal from the touch input tablet.

23. A portable electronic device according to claim 17, wherein the

EL display device comprises a system for identifying a user.

24. A portable electronic device according to claim 17, wherein the first, second and third EL elements include at least a first electrode, an EL layer and a second electrode,

wherein banks are formed at least on both ends of the first electrode,

wherein the EL layer is formed on the first electrode and the banks,

wherein a part of the EL layer overlaps the banks, and

wherein the part of the EL layer overlaps the second electrode.

25. A portable electronic device according to claim 17, wherein one of the thin film transistors is an n-channel thin film transistor.

26. A portable electronic device according to claim 17, wherein the

EL display device comprises a photo diode.

27. A portable electronic device according to claim 17, further comprising a second EL display device operationally connected to the EL display device.

28. A portable electronic device according to claim 17, wherein the touch input tablet and the detection circuit are integrally formed in an inner portion of the EL display device.

29. A portable electronic device according to claim 17, wherein the touch input tablet is integrally formed in the inner portion of the EL display device.

30. A portable electronic device according to claim 17, wherein the EL display device is a light emitting device for emitting light upward.

31. A portable electronic device according to claim 17, wherein the EL display device is a light emitting device for emitting light downward.

32. A portable electronic device according to claim 17, further,comprising a driver circuit,

wherein the first, second and third EL elements include at least a first electrode, an EL layer and a second electrode,

wherein banks are formed at least on both ends of the first electrode,

wherein the EL layer is formed on the first electrode and the banks,

wherein the driver circuit, the first thin film transistor, the second thin film transistor, the third thin film transistor, the fourth thin film transistor, the fifth thin film transistor are formed on the same substrate, and

wherein the banks overlap the driver circuit.

33. A portable electronic device according to claim 17, further comprising a sixth thin film transistor formed in the pixel.