Input/output panel, input/output device, and data processor

• US 10,234,983 B2
• Filed: 09/08/2016
• Issued: 03/19/2019
• Est. Priority Date: 09/11/2015
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Miyake, Hiroyuki
• Primary Examiner(s): Abdin, Shaheda A
• Application Number:
  US15/259,117
• Publication Number:
  US 20170075475A1
• Time in Patent Office: 922 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 2230/00 Details of flat display driving waveforms
• CPC Class Codes: G09G 2310/06 Details of flat display driving waveforms
• CPC Class Codes: G09G 3/3233 with pixel circuitry controlling the current through the light-emitting element
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

A novel input/output panel that is highly convenient or reliable is provided. In addition, a novel input/output device that is highly convenient or reliable is provided. The input/output panel includes a display element, a first conductive film, and a second conductive film. The first conductive film is electrically connected to a plurality of pixel circuits, and the second conductive film is provided so that an electric field which is partly interrupted by an object approaching on the display side of the display element is formed between the first conductive film and the second conductive film.

Claims

1. An input/output panel comprising:

a display element comprising;

a first electrode; and

a second electrode comprising a first region and a second region;

a first transistor over the display element, the first transistor comprising;

a gate electrode; and

source and drain electrodes, one of the source and drain electrodes electrically connected to the display element;

a first conductive film electrically connected to the other of the source and drain electrodes of the first transistor; and

a second conductive film which is configured to form an electric field between the first conductive film and the second conductive film,

wherein the electric field is partly interrupted by an object approaching a region overlapping with the display element,

wherein the first region and the first conductive film overlap each other,

wherein the second region and the second conductive film overlap each other, and

wherein the first electrode and the second electrode of the display element overlap each other.

2. The input/output panel according to claim 1, wherein the second conductive film has a light-transmitting region in a region overlapping with the first electrode of the display element.

3. The input/output panel according to claim 1, further comprising:

a first plurality of pixel circuits arranged in a row direction;

a second plurality of pixel circuits arranged in a column direction intersecting;

a scan line electrically connected to the first plurality of pixel circuits arranged in the row direction; and

a signal line electrically connected to the second plurality of pixel circuits arranged in the column direction,

wherein the first conductive film is electrically connected to the first plurality of pixel circuits arranged in the row direction and the second plurality of pixel circuits arranged in the column direction, and

wherein the display element is electrically connected to one of the first plurality of pixel circuits and the second plurality of pixel circuits.

4. The input/output panel according to claim 3, wherein the first conductive film further comprises a plurality of conductive films extending in the row direction.

5. The input/output panel according to claim 1,

wherein the display element further comprises a layer comprising a light-emitting organic compound between the first electrode and the second electrode of the display element,

wherein the first electrode of the display element has a light-transmitting region in a region overlapping with the second electrode of the display element, and

wherein the second electrode of the display element has a region interposing one of the first conductive film and the second conductive film between the second electrode of the display element and the other of the first conductive film and the second conductive film.

6. The input/output panel according to claim 3,

wherein the first plurality of pixel circuits each comprise:

the first transistor;

a second transistor comprising;

a gate electrode electrically connected to the scan line; and

source and drain electrodes, one of the source and drain electrodes electrically connected to the scan line and the other of the source and drain electrodes electrically connected to the gate electrode of the first transistor; and

a capacitor comprising;

a first electrode electrically connected to the gate electrode of the first transistor; and

a second electrode electrically connected to the one of the source and drain electrodes of the first transistor.

7. The input/output panel according to claim 6,

wherein each of the first transistor and the second transistor further comprises a semiconductor film, and

wherein the semiconductor film comprises indium, gallium, zinc and oxygen.

8. The input/output panel according to claim 1, wherein the second conductive film comprises indium, gallium, zinc and oxygen.

9. An input/output device comprising:

the input/output panel according to claim 1; and

a driver circuit electrically connected to the input/output panel,

wherein the driver circuit is configured to supply a search signal to one of the first conductive film and the second conductive film, and

wherein the driver circuit is configured to generate a sensor signal on the basis of a potential supplied from the other of the first conductive film and the second conductive film.

10. A data processor comprising:

an arithmetic device configured to receive positional data and external data and supply image data and control data; and

the input/output device according to claim 9,

wherein the input/output device is configured to supply the positional data and the external data and is configured to receive the image data and the control data,

wherein the arithmetic device is further configured to generate the image data on the basis of the external data and is configured to determine and supply the control data on the basis of the positional data, and

wherein the input/output device further comprises;

a display portion configured to display the image data;

an input portion configured to supply the positional data; and

a communication portion configured to receive the external data and configured to send the control data.

11. The data processor according to claim 10, wherein the input portion comprises at least one of a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, an audio input device, a viewpoint input device and a pose detection device.

12. An input/output panel comprising:

a display element comprising;

a first electrode;

a first layer over the first electrode, the first layer comprising a light-emitting compound; and

a second electrode over the first layer; and

a first transistor over the display element, the first transistor comprising;

a gate electrode; and

source and drain electrodes, one of the source and drain electrodes electrically connected to the second electrode of the display element;

a touch sensor comprising;

a first conductive film over the second electrode of the display element, the first conductive film electrically connected to the other of the source and drain electrodes of the first transistor; and

a second conductive film over the first electrode of the display element,

wherein one of the first electrode and the second electrode of the display element has a light-transmitting property.

13. The input/output panel according to claim 12, wherein the first conductive film is in direct contact with the other of the source and drain electrodes of the first transistor.

14. The input/output panel according to claim 12, further comprising:

a pixel circuit comprising;

the first transistor;

a second transistor comprising;

a gate electrode electrically connected to a first line; and

source and drain electrodes, one of the source and drain electrodes electrically connected to a second line and the other of the source and drain electrodes electrically connected to the gate electrode of the first transistor; and

a capacitor comprising;

a first electrode electrically connected to the gate electrode of the first transistor; and

a second electrode electrically connected to the one of the source and drain electrodes of the first transistor.

15. The input/output panel according to claim 14,

wherein the first line is a scan line, and

wherein the second line is a signal line.

16. The input/output panel according to claim 14, wherein each of a channel region of the first transistor and a channel region of the second transistor comprises indium, zinc and oxygen.

17. The input/output panel according to claim 14, wherein each of a channel region of the first transistor, a channel region of the second transistor, and the second conductive film comprises indium, zinc and oxygen.

18. An input/output device comprising:

the input/output panel according to claim 12; and

a driver circuit electrically connected to the input/output panel,

wherein the driver circuit is configured to supply a search signal to one of the first conductive film and the second conductive film, and

wherein the driver circuit is configured to generate a sensor signal on the basis of a potential supplied from the other of the first conductive film and the second conductive film.

19. A data processor comprising:

an arithmetic device configured to receive positional data and external data and supply image data and control data; and

the input/output device according to claim 18,

wherein the input/output device is configured to supply the positional data and the external data and receive the image data and the control data,

wherein the arithmetic device is further configured to generate the image data on the basis of the external data and determine and supply the control data on the basis of the positional data, and

wherein the input/output device further comprises;

a display portion;

an input portion; and

a communication portion,

wherein the display portion is configured to display the image data,

wherein the input portion is configured to supply the positional data, and

wherein the communication portion is configured to receive the external data and send the control data.

20. The data processor according to claim 19, wherein the input portion comprises at least one of a keyboard, a hardware button, a pointing device, an illuminance sensor, an imaging device, an audio input device, a viewpoint input device and a pose detection device.