Portable electronic device

• US 7,920,215 B2
• Filed: 09/26/2008
• Issued: 04/05/2011
• Est. Priority Date: 08/23/2000
• Status: Expired due to Fees

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Okamoto, Satoru
• Primary Examiner(s): Duong; Thoi V
• Application Number:
  US12/239,138
• Publication Number:
  US 20090029739A1
• Time in Patent Office: 921 Days
• Field of Search: 349/12, 349/43, 349/50, 349/41, 349/69, 349/113, 349/25, 349/28, 349/73, 349/74, 315/169.1, 315/169.3, 313/505, 345/173, 345/182, 345/207, 345/76, 345/91, 455/566
• US Class Current: 349/12
• 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 digitizers for touch screens G06F3/041
• 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:

a cover member comprising a first display device for displaying an image; and

a second display device comprising a touch input tablet,

wherein the cover member and the second display device are attached to each other to allow opening and closing,

wherein the touch input tablet includes a sensor having a photo diode,

wherein the first and second display devices are an EL display device,

wherein the EL display device includes at least an EL element, and

wherein light emitted from the EL display device is reflected by an object to be photographed and irradiated into the photo diode.

2. A portable electronic device according to claim 1, wherein the sensor is incorporated in each pixel of the second display device, and

wherein the second display device and the sensor are formed of a semiconductor layer of amorphous silicon.

3. A portable electronic device according to claim 1,

wherein the EL display device includes at least an EL element, a switching thin film transistor, an EL driving thin film transistor, and a capacitor, and

wherein the sensor includes at least the photo diode, a reset thin film transistor, a buffer thin film transistor, and a selection thin film transistor.

4. A portable electronic device according to claim 1, the photo diode has an N-type semiconductor layer, a P-type semiconductor layer, and a photoelectric conversion layer formed between the N-type semiconductor layer and the P-type semiconductor layer.

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

and

a flash memory electrically connected with the CPU,

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

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

7. A portable electronic device according to claim 1, wherein one of the first display device and the second display device includes a system for identifying a user.

8. A portable electronic device according to claim 1, further comprising a detection circuit electrically connected with the CPU;

and

wherein the detection circuit electrically connected with the touch input tablet.