US-20260126829-A1 - Electronic Book

US20260126829A1US 20260126829 A1US20260126829 A1US 20260126829A1US-20260126829-A1

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.

Inventors

Shunpei Yamazaki
Jun Koyama
Yasuyuki Arai
Ikuko Kawamata
Atsushi Miyaguchi
Yoshitaka Moriya

Assignees

SEMICONDUCTOR ENERGY LABORATORY CO. LTD.

Dates

Publication Date: 20260507
Application Date: 20260105
Priority Date: 20090502

Claims (17)

1 . (canceled)
2 . A display device comprising: a first substrate; a second substrate; a display portion between the first substrate and the second substrate; a scan line driver circuit between the first substrate and the second substrate; a connection terminal electrode electrically connected to the display portion; and first and second plates configured to support the first substrate, wherein the display device is an active-matrix type display device, wherein the first plate and the second plate are spaced apart from each other, wherein the first substrate comprises a first region, a second region, a third region, a fourth region, and a fifth region, wherein the first region and the connection terminal electrode overlap each other, wherein the second region and the first plate overlap each other, wherein the second region and the second substrate overlap each other, wherein the second region and the display portion overlap each other, wherein the third region and the second plate overlap each other, wherein the third region and the second substrate overlap each other, wherein the third region and the display portion overlap each other, wherein the fourth region is located between the second region and the third region, wherein the fourth region is configured to be bent, wherein the fourth region and the display portion overlap each other, wherein the fifth region is located between the first region and the second region, wherein the fifth region is configured to be bent, wherein the fifth region and the display portion do not overlap each other, wherein the scan line driver circuit and the first plate overlap each other, and wherein the scan line driver circuit and the second plate overlap each other.
3 . The display device according to claim 2 , wherein the first region and the second substrate do not overlap each other.
4 . The display device according to claim 2 , further comprising a signal line driver circuit electrically connected to the display portion through the connection terminal electrode.
5 . The display device according to claim 2 , wherein the scan line driver circuit and the first region do not overlap each other.
6 . The display device according to claim 2 , further comprising an FPC overlapping with the connection terminal electrode.
7 . A display device comprising: a first substrate; a second substrate; a display portion between the first substrate and the second substrate; a scan line driver circuit between the first substrate and the second substrate; a connection terminal electrode electrically connected to the display portion; and first and second plates configured to support the first substrate, wherein the display portion comprises a light-emitting element and a transistor electrically connected to the light-emitting element, wherein the first plate and the second plate are spaced apart from each other, wherein the first substrate comprises a first region, a second region, a third region, a fourth region, and a fifth region, wherein the first region and the connection terminal electrode overlap each other, wherein the second region and the first plate overlap each other, wherein the second region and the second substrate overlap each other, wherein the second region and the display portion overlap each other, wherein the third region and the second plate overlap each other, wherein the third region and the second substrate overlap each other, wherein the third region and the display portion overlap each other, wherein the fourth region is located between the second region and the third region, wherein the fourth region is configured to be bent, wherein the fourth region and the display portion overlap each other, wherein the fifth region is located between the first region and the second region, wherein the fifth region is configured to be bent, wherein the fifth region and the display portion do not overlap each other, wherein the scan line driver circuit and the first plate overlap each other, and wherein the scan line driver circuit and the second plate overlap each other.
8 . The display device according to claim 7 , wherein the first region and the second substrate do not overlap each other.
9 . The display device according to claim 7 , further comprising a signal line driver circuit electrically connected to the display portion through the connection terminal electrode.
10 . The display device according to claim 7 , wherein the scan line driver circuit and the first region do not overlap each other.
11 . The display device according to claim 7 , further comprising an FPC overlapping with the connection terminal electrode.
12 . The display device according to claim 7 , wherein the transistor comprises an oxide semiconductor layer comprising indium and oxygen.
13 . A display device comprising: a first substrate; a second substrate; a display portion between the first substrate and the second substrate; a scan line driver circuit between the first substrate and the second substrate; a connection terminal electrode located in a first surface side of the first substrate; and first and second plates located in a second surface side of the first substrate, wherein the first surface side is opposite to the second surface side, wherein the first and second plates are configured to support the first substrate, wherein the display portion comprises a light-emitting element and a transistor electrically connected to the light-emitting element, wherein the first plate and the second plate are spaced apart from each other, wherein the first substrate comprises a first region, a second region, a third region, a fourth region, and a fifth region, wherein the first region and the connection terminal electrode overlap each other, wherein the first region and the second substrate do not overlap each other, wherein the second region and the first plate overlap each other, wherein the second region and the second substrate overlap each other, wherein the second region and the display portion overlap each other, wherein the third region and the second plate overlap each other, wherein the third region and the second substrate overlap each other, wherein the third region and the display portion overlap each other, wherein the fourth region is located between the second region and the third region, wherein the fourth region is configured to be bent, wherein the fourth region and the display portion overlap each other, wherein the fifth region is located between the first region and the second region, wherein the fifth region is configured to be bent, wherein the fifth region and the display portion do not overlap each other, wherein the scan line driver circuit and the first plate overlap each other, and wherein the scan line driver circuit and the second plate overlap each other.
14 . The display device according to claim 13 , further comprising a signal line driver circuit electrically connected to the display portion through the connection terminal electrode.
15 . The display device according to claim 13 , wherein the scan line driver circuit and the first region do not overlap each other.
16 . The display device according to claim 13 , further comprising an FPC overlapping with the connection terminal electrode.
17 . The display device according to claim 13 , wherein the transistor comprises an oxide semiconductor layer comprising indium and oxygen.

Description

1This application is a continuation of U.S. application Ser. No. 19/014,969, filed on Jan. 9, 2025 which is a continuation of U.S. application Ser. No. 18/384,474, filed on Oct. 27, 2023 (now U.S. Pat. No. 12,228,971 issued Feb. 18, 2025) which is a continuation of U.S. application Ser. No. 17/993,181, filed on Nov. 23, 2022 (now U.S. Pat. No. 11,803,213 issued Oct. 31, 2023) which is a continuation of U.S. application Ser. No. 17/140,473, filed on Jan. 4, 2021 (now U.S. Pat. No. 11,513,562 issued Nov. 29, 2022) which is a continuation of U.S. application Ser. No. 16/002,303, filed on Jun. 7, 2018 (now U.S. Pat. No. 10,915,145 issued Feb. 9, 2021) which is a continuation of U.S. application Ser. No. 15/168,674, filed on May 31, 2016 (now U.S. Pat. No. 9,996,115 issued June 12, 2018) which is a continuation of U.S. application Ser. No. 14/727,113, filed on Jun. 1, 2015 (now U.S. Pat. No. 9,361,853 issued Jun. 7, 2016) which is a continuation of U.S. application Ser. No. 13/864,752, filed on Apr. 17, 2013 (now U.S. Pat. No. 9,047,799 issued Jun. 2, 2015) which is a continuation of U.S. application Ser. No. 12/769,266, filed on Apr. 28, 2010 (now U.S. Pat. No. 8,427,420 issued Apr. 23, 2013), which are all incorporated herein by reference. TECHNICAL FIELD The technical field relates to an e-book reader. BACKGROUND ART In recent years, with the development of digitization techniques, a mode has been employed in which textual information and image information of newspapers, magazines, and the like are provided in the form of electronic data. This type of electronic data generally has a feature in which the content is viewed when displayed with a display device included in a personal computer or the like. As the above display device which displays the electronic data, there is a portable display device as well as a stationary one. As a typical example of the portable display device, an e-book reader is given. The e-book reader is normally provided with a display portion on its front surface and a page-switching key on the periphery of its main body, which is operated to display data on the next page or the previous page on the display portion. However, the e-book reader having the structure described above is handled very differently from paper media such as newspapers and magazines. An e-book reader is very different from a paper book especially in that pages are switched with key operation. Such a difference in the way they are handled causes the e-book reader a problem such as a lower efficiency of text reading, sentence comprehension, or image recognition than the paper media. An e-book reader using a dual display device has been proposed in order to eliminate the above difference with paper media (e.g., see Patent Document 1 and Patent Document 2). REFERENCE Patent Document [Patent Document 1] Japanese Published Patent Application No. 2005-38608 [Patent Document 2] Japanese Published Patent Application No. 2003-58081 DISCLOSURE OF INVENTION It is an object of an embodiment of the disclosed invention to provide an e-book reader in which destruction of a driver circuit at the time when a flexible panel is handled is inhibited. It is another object of an embodiment of the disclosed invention to provide an e-book reader whose structure is simplified. An embodiment of the disclosed invention is an e-book reader including 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, where the signal line driver circuit is provided in the binding portion, and the scan line driver circuit is provided at an edge of the display panel in a direction perpendicular to the binding portion. According to the e-book reader of an embodiment of the disclosed invention, the scan line driver circuit and the signal line driver circuit include transistors, and the transistor included in the scan line driver circuit may have a different structure from the transistor included in the signal line driver circuit. According to an e-book reader of an embodiment of the disclosed invention, a channel layer of the transistor included in the scan line driver circuit is formed of a non-single-crystal semiconductor, and a channel layer of the transistor included in the signal line driver circuit is formed of a single crystal semiconductor. According to the e-book reader of an embodiment of the disclosed invention, the non-single-crystal semiconductor is amorphous silicon, microcrystalline silicon, polysilicon, or an oxide semiconductor. According to the e-book reader of an embodiment of the disclosed invention, the display portion includes a transistor, and a channel layer of the transistor included in the display portion and a channel layer of the transistor included in the scan line driver circuit are formed using the same material. According to the e-book re