Mobile phone

• US 8,478,346 B2
• Filed: 11/21/2008
• Issued: 07/02/2013
• Est. Priority Date: 12/03/2007
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei
• Primary Examiner(s): HOUSTON, ADAM D
• Application Number:
  US12/275,738
• Publication Number:
  US 20090143109A1
• Time in Patent Office: 1,684 Days
• Field of Search: 345156-158, 345/168, 345/169, 345/173, 345/175, 455/550.1, 455/566
• US Class Current: 455/566
• 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 1/1656 Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203
• 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 1/1694 the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer
• CPC Class Codes: G06F 2200/1614 Image rotation following screen orientation, e.g. switching from landscape to portrait mode
• CPC Class Codes: G06F 2200/1637 Sensing arrangement for detection of housing movement or orientation, e.g. for controlling scrolling or cursor movement on the display of an handheld computer
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0421 by interrupting or reflecting a light beam, e.g. optical touch-screen
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 3/04886 by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
• CPC Class Codes: H04M 1/72466 with selection means, e.g. keys, having functions defined by the mode or the status of the device
• CPC Class Codes: H04M 2250/12 including a sensor for measuring a physical value, e.g. temperature or motion
• CPC Class Codes: H04M 2250/22 including a touch pad, a touch sensor or a touch detector

Abstract

To provide a mobile phone which can be used without hampering convenience in a condition where functions of the mobile phone are switched and can improve operability. The mobile phone includes an optical sensor, a display element, a pixel circuit portion where a plurality of pixels having a plurality of transistors are arranged in matrix, an optical sensor control circuit which is connected to an optical sensor driver circuit for driving the optical sensor and reads a signal from the optical sensor, a display portion control circuit which is connected to a display element driver circuit for driving the display element and outputs an image signal for displaying an image on a display portion, a gradient detection portion for outputting a signal in accordance with a gradient of the mobile phone, and an arithmetic circuit for performing display in the pixel circuit portion by switching image signals output to the display portion control circuit with a signal from the gradient detection portion.

Claims

1. A mobile phone comprising:

a plurality of optical sensors;

a plurality of display elements;

a pixel circuit portion where a plurality of pixels and a plurality of transistors are arranged, wherein each of the plurality of pixels includes one of the plurality of optical sensors and one of the plurality of display elements;

an optical sensor control circuit connected to an optical sensor driver circuit, wherein the optical sensor driver circuit is configured to drive the plurality of optical sensors and read a signal from each of the plurality of optical sensors;

a display portion control circuit connected to a display element driver circuit, wherein the display element driver circuit is configured to drive the plurality of display elements;

a gradient detection portion which is configured to output a signal in accordance with a gradient of the mobile phone from a viewpoint; and

an arithmetic circuit which is configured to perform a display in the pixel circuit portion by switching an image signal output to the display portion control circuit with the signal from the gradient detection portion.

2. The mobile phone according to claim 1, wherein each of the plurality of display elements is one of a liquid crystal element, an EL element, and an electrophoretic element.

3. The mobile phone according to claim 1, wherein the gradient detection portion is one of a gyroscope and a triaxial acceleration sensor.

4. The mobile phone according to claim 1, wherein each of the plurality of optical sensors is a photodiode.

5. The mobile phone according to claim 1, wherein a semiconductor layer included in the transistor is manufactured by using a single crystal silicon substrate.

6. A mobile phone comprising:

a plurality of optical sensors;

a plurality of display elements;

a pixel circuit portion where a plurality of pixels and a plurality of transistors are arranged, wherein each of the plurality of pixels includes one of the plurality of optical sensors and one of the plurality of display elements;

an optical sensor control circuit connected to an optical sensor driver circuit, wherein the optical sensor driver circuit is configured to drive the plurality of optical sensors and read a signal from each of the plurality of optical sensors;

a display portion control circuit connected to a display element driver circuit, wherein the display element driver circuit is configured to drive the plurality of display elements;

a gradient detection portion which is configured to detect whether a gradient of the mobile phone from a viewpoint is longitudinal or lateral, and to output a signal in accordance with the gradient; and

an arithmetic circuit which is configured to perform a display in the pixel circuit portion by switching an image signal output to the display portion control circuit with the signal in accordance with the gradient.

7. The mobile phone according to claim 6, wherein each of the plurality of display elements is one of a liquid crystal element, an EL element, and an electrophoretic element.

8. The mobile phone according to claim 6, wherein the gradient detection portion is one of a gyroscope and a triaxial acceleration sensor.

9. The mobile phone according to claim 6, wherein each of the plurality of optical sensors is a photodiode.

10. The mobile phone according to claim 6, wherein a semiconductor layer included in the transistor is manufactured by using a single crystal silicon substrate.

11. A mobile phone comprising:

a plurality of optical sensors;

a plurality of display elements;

a pixel circuit portion where a plurality of pixels and a plurality of transistors are arranged, wherein each of the plurality of pixels includes one of the plurality of optical sensors and one of the plurality of display elements;

an optical sensor control circuit connected to an optical sensor driver circuit, wherein the optical sensor driver circuit is configured to drive the plurality of optical sensors and read a signal from each of the plurality of optical sensors;

a display portion control circuit connected to a display element driver circuit, wherein the display element driver circuit is configured to drive the plurality of display elements;

a gradient detection portion which is configured to detect whether a gradient of the mobile phone from a viewpoint is in a first state, a second state, or a third state, and to output a signal in accordance with the gradient; and

an arithmetic circuit which is configured to perform a display in the pixel circuit portion by switching an image signal output to the display portion control circuit with the signal in accordance with the gradient.

12. The mobile phone according to claim 11, wherein each of the plurality of display elements is one of a liquid crystal element, an EL element, and an electrophoretic element.

13. The mobile phone according to claim 11, wherein the gradient detection portion is one of a gyroscope and a triaxial acceleration sensor.

14. The mobile phone according to claim 11, wherein each of the plurality of optical sensors is a photodiode.

15. The mobile phone according to claim 11, wherein a semiconductor layer included in the transistor is manufactured by using a single crystal silicon substrate.