US 11,698,547 B2Granted

Semiconductor device and display device

AssigneeSemiconductor Energy Laboratory Co., Ltd.

InventorsRyo Hatsumi, Tetsuji Ishitani

Life of this patent

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Abstract

An increase in fabricating cost of a display module including a touch sensor is suppressed. A display device which includes a first substrate, a second substrate, and liquid crystal interposed between the first substrate and the second substrate includes a display portion. The display portion includes a sensor unit and a pixel. The sensor unit includes a first transistor, a first conductive film electrically connected to a gate of the first transistor, and a second conductive film. At least part of the first conductive film overlaps with at least part of the second conductive film. The pixel includes a second transistor, and a pixel electrode electrically connected to the second transistor. At least part of the pixel electrode overlaps with at least part of the first conductive film.

Claims16

Dependent claims

A display device having a display portion comprising:

a first substrate;
a second substrate;
and
a liquid crystal layer provided between the first substrate and the second substrate,
wherein the display portion includes a sensor unit and a first pixel,
wherein the sensor unit includes a first capacitor comprising a first electrode and a second electrode,
wherein the first electrode comprises a first part of a first conductive film and the second electrode comprises a second conductive film,
wherein the first conductive film faces the second conductive film via the liquid crystal layer,
wherein the first pixel includes a transistor and a first pixel electrode electrically connected to the transistor,
wherein the transistor, the first conductive film, and the first pixel electrode are provided between the first substrate and the liquid crystal layer,
wherein the first conductive film is provided between the transistor and the first pixel electrode,
wherein the first part of the first conductive film does not overlap with the first pixel electrode, and
wherein a second part of the first conductive film has a region overlapped with the first pixel electrode.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/072,164Filed 16 Oct 2020 · continuation
Priority: JP 2014-2439952 Dec 2014
Published: US 2021/0033905 A14 Feb 2021
Granted: 11 Jul 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G02F 1/13338
Constructional arrangements; Manufacturing methods: input devices, e.g. touch panels
H10D 30/6755
Characterised by the active materials: oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
H10D 62/80
Semiconductor bodies, or regions thereof, of devices having potential barriers: characterised by the materials
H10D 86/423
Having a particular composition, shape or crystalline structure of the active layer: comprising semiconductor materials not belonging to the Group…

Family

Application14/948,987Parent of this division · filed 23 Nov 2015
Application16/039,533Parent of this continuation · filed 19 Jul 2018
US 10,031,362 B2Parent of this division · filed 24 Jul 2018
US 10,809,556 B2Parent of this continuation · filed 20 Oct 2020
US 2021/0033905 A1Pre-grant publication · published 4 Feb 2021
Application16/039,533Parent of this division
US 2016/0154263 A1Published application
US 2018/0321531 A1Published application
US 11,698,547 B2This patent

From the US filing history. Foreign family members aren’t listed.