US-12619326-B2 - Display device and electronic device

Abstract

A display device including a touch sensor and a driver for driving the touch sensor is provided. The display device has a touch panel function, an electrode of the touch sensor is electrically connected to a first driver circuit formed monolithically on a substrate where a pixel circuit is formed. A transistor including a metal oxide in a semiconductor layer can be used in the first driver circuit. The transistor included in the first driver circuit is easily downsized and can operate at high speed. Thus, the area occupied by the circuit can be reduced, which contributes to a narrower bezel.

Inventors

• Shunpei Yamazaki
• Hajime Kimura

Assignees

• SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Dates

Publication Date

20260505

Application Date

20230727

Priority Date

20220810

Claims (18)

1. 1 . A display device comprising: a pixel circuit comprising a first transistor; a light-emitting device comprising a first electrode electrically connected to one of a source and a drain of the first transistor, a second electrode, and a light-emitting layer between the first electrode and the second electrode; a first insulating layer over the second electrode; a sensor electrode over the first insulating layer; and a first driver circuit comprising a second transistor, wherein the first driver circuit is configured to supply a signal potential to the sensor electrode, wherein the pixel circuit and the first driver circuit are over a first substrate, wherein the pixel circuit is in a display portion, wherein the second electrode is electrically connected to a power supply line in a connection portion outside the display portion, wherein the first insulating layer comprises an opening outside the connection portion, wherein the sensor electrode is electrically connected to one of a source and a drain of the second transistor through the opening, and wherein a channel formation region of the second transistor is along a side surface of a second insulating layer over the first substrate.
2. 2 . The display device according to claim 1 , wherein the sensor electrode is electrically connected to one of the source and the drain of the second transistor through a connection electrode.
3. 3 . The display device according to claim 2 , wherein the connection electrode is on a same surface as the first electrode.
4. 4 . The display device according to claim 1 , wherein a channel formation region of the first transistor is along the side surface of the second insulating layer.
5. 5 . The display device according to claim 1 , wherein the channel formation region of the second transistor comprises a metal oxide.
6. 6 . The display device according to claim 1 , comprising a second driver circuit, wherein the pixel circuit comprises a third transistor, wherein the second driver circuit is a gate driver and comprises a fourth transistor, wherein one of a source and a drain of the fourth transistor is electrically connected to a gate of the third transistor, and wherein a channel formation region of the fourth transistor is along the side surface of the second insulating layer.
7. 7 . The display device according to claim 6 , wherein the channel formation region of the fourth transistor comprises a metal oxide.
8. 8 . The display device according to claim 1 , comprising a third driver circuit, wherein the pixel circuit comprises a fifth transistor, wherein the third driver circuit is a source driver and comprises a sixth transistor, wherein one of a source and a drain of the sixth transistor is electrically connected to one of a source and a drain of the fifth transistor, and wherein a channel formation region of the sixth transistor is along the side surface of the second insulating layer.
9. 9 . The display device according to claim 8 , wherein the channel formation region of the sixth transistor comprises a metal oxide.
10. 10 . The display device according to claim 1 , wherein a camera is on a second surface side of the first substrate opposite to a first surface provided with the pixel circuit, and wherein a first region of the display portion overlapping with a lens of the camera has a first pixel pitch larger than a second pixel pitch of a second region of the display portion not overlapping with the lens of the camera.
11. 11 . The display device according to claim 10 , wherein in the first region and the second region, the sensor electrode comprises a metal layer and overlaps with a wiring electrically connected to the pixel circuit.
12. 12 . The display device according to claim 10 , wherein in the first region, the sensor electrode comprises a light-transmitting conductive film, wherein in the second region, the sensor electrode comprises a metal layer and overlaps with a wiring electrically connected to the pixel circuit, and wherein the light-transmitting conductive film extends to the second region and electrically connected to the metal layer.
13. 13 . The display device according to claim 10 , wherein in the second region, the sensor electrode comprises a metal layer and overlaps with a wiring electrically connected to the pixel circuit, and wherein in the first region, the sensor electrode is not provided.
14. 14 . An electronic device comprising the display device according to claim 1 , and a speaker.
15. 15 . A display device comprising: a pixel circuit comprising a first transistor; a light-emitting device comprising a first electrode electrically connected to one of a source and a drain of the first transistor, a second electrode, and a light-emitting layer between the first electrode and the second electrode; a first insulating layer over the second electrode; a sensor electrode over the first insulating layer; and a first driver circuit comprising a second transistor, wherein the first driver circuit is configured to supply a signal potential to the sensor electrode, wherein the pixel circuit and the first driver circuit are over a first substrate, wherein the pixel circuit is in a display portion, wherein the second electrode is electrically connected to a power supply line in a connection portion outside the display portion, wherein the first insulating layer comprises an opening outside the connection portion, and wherein the sensor electrode is electrically connected to one of a source and a drain of the second transistor through the opening.
16. 16 . The display device according to claim 15 , wherein the sensor electrode is electrically connected to one of the source and the drain of the second transistor through a connection electrode.
17. 17 . The display device according to claim 16 , wherein the connection electrode is on a same surface as the first electrode.
18. 18 . The display device according to claim 15 , wherein a camera is on a second surface side of the first substrate opposite to a first surface provided with the pixel circuit, and wherein a first region of the display portion overlapping with a lens of the camera has a first pixel pitch larger than a second pixel pitch of a second region of the display portion not overlapping with the lens of the camera.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a U.S. National Phase Application under 35 U.S.C. § 371 of International Application PCT/IB2023/057608, filed on Jul. 27, 2023, which is incorporated by reference and claims the benefit of a foreign priority application filed in Japan on Aug. 10, 2022, as Application No. 2022-127782. TECHNICAL FIELD One embodiment of the present invention relates to a display device. Note that one embodiment of the present invention is not limited to the above technical field. Examples of the technical field of one embodiment of the present invention include a semiconductor device, a display device, a light-emitting apparatus, a power storage device, a memory device, a lighting device, an input device (e.g., a touch sensor), an input/output device (e.g., an antenna and a touch panel), a driving method thereof, an usage thereof, or a manufacturing method thereof. Note that in this specification and the like, a semiconductor device generally means a device that can function by utilizing semiconductor characteristics. A transistor and a semiconductor circuit are embodiments of semiconductor devices. In addition, in some cases, a memory device, a display device, an image capturing device, or an electronic device includes a semiconductor device. BACKGROUND ART In recent years, display devices have been used in various applications. Usage examples of a large display device include a television device for home use, digital signage, and a PID (Public Information Display). In addition, many display devices have been used for smartphones, tablet terminals, and the like. Light-emitting apparatuses including light-emitting devices (also referred to as light-emitting elements) have been developed as display devices. Light-emitting devices (also referred to as EL devices or EL elements) utilizing electroluminescence (hereinafter referred to as EL) phenomenon have features such as ease of reduction in thickness and weight, high-speed response to input signals, and driving with a constant DC voltage power source. Patent Document 1 discloses an example of a display device using an organic EL element. REFERENCE Patent Document [Patent Document 1] Japanese Published Patent Application No. 2002-324673 SUMMARY OF THE INVENTION Problems to be Solved by the Invention An active-matrix display device includes a gate driver for selecting a pixel to which data is to be written and a source driver for supplying data to the selected pixel. In addition, to provide a function of a touch panel to the display device, a touch sensor and a driver for driving the touch sensor are needed. For these drivers, IC chips having the respective functions can be used. For example, on a bezel of a substrate over which a pixel circuit is formed, the IC chip is mounted with the use of a technique such as a chip on glass (COG), a chip on film (COF), or a tape carrier package (TCP). As the number of mounted IC chips increases due to an increase in the area, resolution, or the like of the display device, the manufacturing cost of the display device increases. This also hinders a narrower frame. In consideration of the above problems, the driver is desired to be monolithically formed over the same substrate as the pixel circuit. Therefore, an object of one embodiment of the present invention is to provide a display device including a touch sensor. Another object is to provide a display device including a touch sensor and a driver for driving the touch sensor. Another object is to provide a display device including a gate driver, a source driver, and a driver for a touch sensor. Another object is to provide a display device or the like with a novel structure. Another object is to provide a novel semiconductor device or the like. Note that the description of these objects does not preclude the existence of other objects. Note that one embodiment of the present invention does not necessarily achieve all the objects. Other objects will be apparent from the description of the specification, the drawings, the claims, and the like, and other objects can be derived from the description of the specification, the drawings, the claims, and the like. Means for Solving the Problems One embodiment of the present invention relates to a display device including a touch sensor. One embodiment of the present invention is a display device including a pixel circuit, a light-emitting device, a sensor electrode, and a first driver circuit; the first driver circuit has a function of supplying a signal potential to the sensor electrode; the pixel circuit and the first driver circuit are provided over the same substrate; the pixel circuit is provided in a display portion; the pixel circuit includes a first transistor; the first driver circuit includes a second transistor; the light-emitting device includes a first electrode, a light-emitting layer, and a second electrode; the light-emitting layer is provided between the first electrode and