Display device

a display device and display technology, applied in the field of display devices, can solve problems such as accidental application of force, and achieve the effect of low power consumption and low power consumption

Inactive Publication Date: 2015-02-05
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]The above display device of one embodiment of the present invention includes a display portion that can be opened and folded, a magnet and a sensing portion including a magnetic sensor that are placed to sense a folded state of the display portion, and an image processing portion that generates, when the display portion is in the folded state, an image in which a black image is displayed in part of the display portion. Thus, a region where display is unnecessary when part of the display portion is folded can display a ...

Problems solved by technology

For example, portable information processors are often used outdoors, and force might be ac...

Method used

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embodiment 1

[0041]In this embodiment, a structure of a display device of one embodiment of the present invention is described with reference to FIGS. 1A, 1B1, and 1B2, FIGS. 2A and 2B, and FIGS. 3A and 3B.

[0042]FIGS. 1A, 1B1, and 1B2 are a block diagram and schematic views illustrating the structure of the display device of one embodiment of the present invention.

[0043]FIGS. 2A and 2B illustrate a display portion that can be used in the display device of one embodiment of the present invention. FIG. 2A is a block diagram illustrating the structure of the display portion, and FIG. 2B is a circuit diagram illustrating a pixel circuit in which an electroluminescent (EL) element is used as a display element.

[0044]FIGS. 3A and 3B are flow charts illustrating the operation of a control portion of the display device of one embodiment of the present invention. FIG. 3A is a flow chart illustrating main processing, and FIG. 3B is a flow chart illustrating interrupt processing.

[0045]A display device 200 d...

embodiment 2

[0114]In this embodiment, a structure of a display device of one embodiment of the present invention is described with reference to FIG. 4, FIGS. 5A and 5B, and FIGS. 6A to 6D.

[0115]FIG. 4 is a block diagram illustrating the structure of the display device of one embodiment of the present invention.

[0116]FIGS. 5A and 5B are flow charts illustrating the operation of a control portion of the display device of one embodiment of the present invention. FIG. 5A is a flow chart illustrating main processing, and FIG. 5B is a flow chart illustrating interrupt processing.

[0117]FIGS. 6A to 6D are flow charts illustrating processing 1, processing 2, processing 3, and processing 4 performed by the control portion of the display device of one embodiment of the present invention.

[0118]A display device 200B described in this embodiment includes the foldable display portion 230 including the first region 230(1) and the second region 230(2); the sensing portion 240 that senses an opened state or a fo...

modification example

[0190]A display device 200D described as a modification example in this embodiment will be described with reference to FIG. 4; the display device 200B in FIG. 4 is replaced with the display device 200D.

[0191]In the display device 200D described as a modification example in this embodiment, the frequency of rewriting images in the display portion can be varied.

[0192]Specifically, description is given on a display device which has a first mode in which a scan line selection signal for selecting a pixel is output at a frequency of more than or equal to 30 Hz (30 times per second), preferably more than or equal to 60 Hz (60 times per second) and less than 960 Hz (960 times per second) and a second mode in which the scan line selection signal is output at a frequency of more than or equal to 11.6 μHz (once per day) and less than 0.1 Hz (0.1 times per second), preferably more than or equal to 0.28 mHz (once per hour) and less than 1 Hz (once per second).

[0193]When a still image is display...

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PUM

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Abstract

A display device with low power consumption is provided. Furthermore, a display device in which an image is displayed in a region that can be used in a folded state is provided. The conceived display device includes a display portion that can be opened and folded, a sensing portion that senses a folded state of the display portion, and an image processing portion that generates, when the display portion is in the folded state, an image in which a black image is displayed in part of the display portion.

Description

TECHNICAL FIELD[0001]The present invention relates to an object, a method, or a manufacturing method. In addition, the present invention relates to a process, a machine, manufacture, or a composition of matter. In particular, the present invention relates to, for example, a human interface, a semiconductor device, a display device, a light-emitting device, a power storage device, a driving method thereof, or a manufacturing method thereof. For example, the present invention particularly relates to a display device. In particular, one embodiment of the present invention relates to a foldable display device.BACKGROUND ART[0002]The social infrastructures relating to means for transmitting information have advanced. This has made it possible to acquire, process, and send out many pieces and various kinds of information with the use of an information processor not only at home or office but also at other visiting places.[0003]With this being the situation, portable information processors...

Claims

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Application Information

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IPC IPC(8): G06F1/16G06F3/041
CPCG06F1/1652G06F2203/04102G06F3/041G06F3/0412G06F3/0446G09G2310/0262G09G2330/021G09G3/20G06F3/04146G09F9/301H10K77/111H10K2102/311
Inventor HIRAKATA, YOSHIHARUMIYAKE, HIROYUKIINOUE, SEIKOYAMAZAKI, SHUNPEI
Owner SEMICON ENERGY LAB CO LTD
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