INPUT AND OUTPUT DEVICE

• US 20150311260A1
• Filed: 04/20/2015
• Published: 10/29/2015
• Est. Priority Date: 04/25/2014
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: SENDA, Naoyuki, NAKADA, Masataka, ABE, Takayuki, KUSUNOKI, Koji, SHISHIDO, Hideaki
• Granted Patent: US 9,960,213 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 15/0216 Constructional details or arrangements
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 59/8792 comprising light absorbing layers, e.g. black layers
• CPC Class Codes: H10K 77/111 Flexible substrates

Abstract

A flexible input and output device in which defects due to a crack is reduced. The input and output device includes a first flexible substrate, a second flexible substrate, a first buffer layer, a first crack inhibiting layer, an input device, and a light-emitting element. A first surface of the first flexible substrate faces a second surface of the second flexible substrate. The first buffer layer, the first crack inhibiting layer, and the input device are provided on the first surface side of the first flexible substrate. The first buffer layer includes a region overlapping with the first crack inhibiting layer. The first buffer layer is between the first crack inhibiting layer and the first surface. The input device includes a transistor and a sensor element. The light-emitting element is provided on the second surface side of the second flexible substrate.

Claims

1. An input and output device comprising:

a first flexible substrate;

a second flexible substrate;

a first buffer layer;

a first crack inhibiting layer;

an input device including a transistor and a sensor element; and

a light-emitting element,

wherein a first surface of the first flexible substrate faces a second surface of the second flexible substrate,

wherein the first buffer layer, the first crack inhibiting layer, and the input device are provided on the first surface side of the first flexible substrate,

wherein the first buffer layer includes a region overlapping with the first crack inhibiting layer,

wherein the sensor element includes a pair of electrodes and a dielectric layer,

wherein the dielectric layer is provided between the pair of electrodes,

wherein the transistor and the sensor element are electrically connected to each other, and

wherein the light-emitting element is provided on the second surface side of the second flexible substrate.

2. The input and output device according to claim 1,

wherein the first buffer layer contains an inorganic material,

wherein the light-emitting element contains a light-emitting organic compound,

wherein the first crack inhibiting layer contains one of a conductive material and a resin material, and

wherein the first crack inhibiting layer is positioned between the sensor element and an end portion of the first flexible substrate when seen from a direction perpendicular to the first surface.

3. The input and output device according to claim 1, further comprising a second buffer layer and a second crack inhibiting layer,

wherein the second buffer layer and the second crack inhibiting layer are provided on the second surface side of the second flexible substrate, and

wherein the second buffer layer includes a region overlapping with the second crack inhibiting layer.

4. The input and output device according to claim 3,

wherein the second crack inhibiting layer contains one of a conductive material and a resin material, and

wherein the second crack inhibiting layer is positioned between the light-emitting element and an end portion of the second flexible substrate when seen from a direction perpendicular to the second surface.

5. The input and output device according to claim 1, wherein one of the pair of electrodes contains an oxide conductor.

6. The input and output device according to claim 1, further comprising a color filter,

wherein the color filter is provided on the first surface side of the first flexible substrate,

wherein one of the pair of electrodes is positioned between the color filter and the second flexible substrate.

7. The input and output device according to claim 1, further comprising a sealing layer,

wherein the sealing layer bonds the first surface and the second surface, and

wherein one of the pair of electrodes is in contact with the sealing layer.

8. The input and output device according to claim 1, further comprising an external connection terminal,

wherein the first crack inhibiting layer surrounds the input device and the external connection terminal when seen from a direction perpendicular to the first surface.

9. A module comprising:

the input and output device according to claim 1; and

an FPC.

10. An electronic device comprising:

the input and output device according to claim 1; and

one of a speaker, a microphone and an operation button.

11. An input and output device comprising:

a first flexible substrate;

a second flexible substrate;

a first buffer layer between the first flexible substrate and the second flexible substrate;

a first crack inhibiting layer in contact with the first buffer layer;

an input device including a transistor and a sensor element; and

a light-emitting element,

wherein the input device and the light-emitting element is provided between the first buffer layer and the second flexible substrate.

12. The input and output device according to claim 11,

wherein the sensor element includes a pair of electrodes and a dielectric layer,

wherein the dielectric layer is provided between the pair of electrodes,

wherein the transistor and the sensor element are electrically connected to each other, and

wherein the light-emitting element is provided between the second flexible substrate and the input device.

13. The input and output device according to claim 11,

wherein the first buffer layer contains an inorganic material,

wherein the light-emitting element contains a light-emitting organic compound,

wherein the first crack inhibiting layer contains one of a conductive material and a resin material, and

wherein the first crack inhibiting layer is positioned between the sensor element and an end portion of the first flexible substrate when seen from a direction perpendicular to a surface of the first flexible substrate.

14. The input and output device according to claim 11, further comprising a second buffer layer and a second crack inhibiting layer,

wherein the second buffer layer is provided between the second flexible substrate and the light-emitting element, and

wherein the second crack inhibiting layer is in contact with the second buffer layer.

15. The input and output device according to claim 14,

wherein the second crack inhibiting layer contains one of a conductive material and a resin material, and

wherein the second crack inhibiting layer is positioned between the light-emitting element and an end portion of the second flexible substrate when seen from a direction perpendicular to a surface of the second flexible substrate.

16. The input and output device according to claim 11, wherein one of a pair of electrodes contains an oxide conductor.

17. The input and output device according to claim 11, further comprising a color filter,

wherein the sensor element includes a pair of electrodes and a dielectric layer,

wherein the color filter is provided between the first buffer layer and the second flexible substrate, and

wherein one of the pair of electrodes is positioned between the color filter and the second flexible substrate.

18. The input and output device according to claim 11, further comprising a sealing layer,

wherein the sensor element includes a pair of electrodes and a dielectric layer,

wherein the sealing layer bonds the first flexible substrate and the second flexible substrate, and

wherein one of the pair of electrodes is in contact with the sealing layer.

19. The input and output device according to claim 11, further comprising an external connection terminal,

wherein the first crack inhibiting layer surrounds the input device and the external connection terminal when seen from a direction perpendicular to a surface of the first flexible substrate.