Electronic book

• US 9,361,853 B2
• Filed: 06/01/2015
• Issued: 06/07/2016
• Est. Priority Date: 05/02/2009
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei, Koyama, Jun, Arai, Yasuyuki, Kawamata, Ikuko, Miyaguchi, Atsushi, Moriya, Yoshitaka
• Primary Examiner(s): Nguyen, Kevin M
• Application Number:
  US14/727,113
• Publication Number:
  US 20150355680A1
• Time in Patent Office: 372 Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• 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 1/1635 Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter
• 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 1/1652 the display being flexible, e.g. mimicking a sheet of paper, or rollable
• CPC Class Codes: G06F 3/1423 controlling a plurality of local displays, e.g. CRT and flat panel display
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• CPC Class Codes: G09G 2310/0218 with collection of electrodes in groups for n-dimensional addressing
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2310/0275 Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
• CPC Class Codes: G09G 2310/0281 Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
• CPC Class Codes: G09G 2330/02 Details of power systems and of start or stop of display operation
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2380/14 Electronic books and readers
• CPC Class Codes: G09G 3/035 for flexible display surfaces
• 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 3/2096 : Details of the interface to the display terminal specific for a flat panel suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167
• CPC Class Codes: G09G 3/3225 : using an active matrix
• CPC Class Codes: G09G 3/344 : based on particles moving in a fluid or in a gas, e.g. electrophoretic devices electrophoretic devices per se G02F1/167
• CPC Class Codes: G09G 3/3648 : using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 5/003 : Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092

Abstract

An e-book reader in which destruction of a driver circuit at the time when a flexible panel is handled is inhibited. In addition, an e-book reader having a simplified structure. A plurality of flexible display panels each including a display portion in which display control is performed by a scan line driver circuit and a signal line driver circuit, and a binding portion fastening the plurality of display panels together are included. The signal line driver circuit is provided inside the binding portion, and the scan line driver circuit is provided at the edge of the display panel in a direction perpendicular to the binding portion.

Claims

1. An electronic device comprising:

a display panel comprising a display portion in which display is configured to be controlled by a scan line driver circuit and a signal line driver circuit;

a housing on one edge of the display panel; and

a battery,

wherein the display panel is flexible,

wherein the housing is less flexible than the display panel,

wherein the signal line driver circuit is in an integrated circuit inside the housing,

wherein the scan line driver circuit is outside the housing,

wherein the battery is inside the housing,

wherein the display portion comprises a first transistor,

wherein the scan line driver circuit comprises a second transistor, and

wherein the first transistor and the second transistor includes a same semiconductor material.

2. The electronic device according to claim 1, wherein the same semiconductor material is an oxide semiconductor material.

3. The electronic device according to claim 1, wherein the display panel is a touch display panel.

4. The electronic device according to claim 1, wherein the battery has a sheet-like shape.

5. The electronic device according to claim 1, wherein the display panel comprises a depressed portion at which the display panel is configured to be bent.

6. The electronic device according to claim 1, wherein the electronic device is a liquid crystal display device.

7. An electronic device comprising:

a display panel comprising a display portion in which display is configured to be controlled by a scan line driver circuit and a signal line driver circuit;

a housing on one edge of the display panel; and

a battery,

wherein the display panel is flexible,

wherein the housing is less flexible than the display panel,

wherein the signal line driver circuit is in an integrated circuit inside the housing,

wherein the scan line driver circuit is outside the housing,

wherein the battery is inside the housing,

wherein the display portion comprises a first transistor,

wherein the scan line driver circuit comprises a second transistor, and

wherein the first transistor and the second transistor is on a same substrate.

8. The electronic device according to claim 7, wherein the display panel is a touch display panel.

9. The electronic device according to claim 7, wherein the battery has a sheet-like shape.

10. The electronic device according to claim 7, wherein the display panel comprises a depressed portion at which the display panel is configured to be bent.

11. The electronic device according to claim 7, wherein the electronic device is a liquid crystal display device.

12. An electronic device comprising:

a first display panel comprising a first display portion in which display is configured to be controlled by a first scan line driver circuit and a first signal line driver circuit;

a second display panel comprising a second display portion in which display is configured to be controlled by a second scan line driver circuit and a second signal line driver circuit;

a housing on one edge of the first display panel and one edge of the second display panel; and

a battery,

wherein the first display panel and the second display panel are flexible,

wherein the housing is less flexible than the first display panel and the second display panel,

wherein the first signal line driver circuit and the second signal line driver circuit are in an integrated circuit inside the housing,

wherein the first scan line driver circuit and the second scan line driver circuit are outside the housing, and

wherein the battery is inside the housing.

13. The electronic device according to claim 12, wherein the first display panel and the second display panel are touch display panels.

14. The electronic device according to claim 12, wherein the battery has a sheet-like shape.

15. The electronic device according to claim 12, wherein the first display panel and the second display panel each comprises a depressed portion at which the first display panel or the second display panel is configured to be bent.

16. The electronic device according to claim 12, wherein the electronic device is a liquid crystal display device.