Sensor-equipped display device and sensor device

Patent metadata

Field	Value
Publication number	US-10928945-B2
Application number	US-202016787829-A
Country	US
Kind code	B2
Filing date	Feb 11, 2020
Priority date	Nov 30, 2015
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A sensor-equipped display device is provided including a display panel including a substrate, a sensor drive electrode, and a detection electrode opposed to the sensor drive electrode, wherein the detection electrode includes first and second layers in a first direction, the first layer has a first width in a second direction intersecting the first direction, the second layer has a second width in the second direction, the second width being wider than the first width, the first layer includes first lower and upper surfaces, the first upper surface being between the first lower surface and the second layer, the second layer includes a second lower surface located on the first upper surface, and a second upper surface opposed to the second lower surface, the second lower surface being between the second upper surface and the first layer, the second lower surface has a first region which is in contact with the first upper surface and a second region which is not in contact with the first upper surface, and the second region includes a part of an edge of the second lower surface.

First claim

What is claimed is:

1. A sensor-equipped display device comprising:
a display panel including a substrate, a sensor drive electrode, and a detection electrode opposed to the sensor drive electrode,
wherein the detection electrode includes a first layer and a second layer formed on and in contact with the first layer,
one of the first and second layers is between the substrate and an other of the first and second layers,
the first and second layers run in a first direction,
the first layer has a first width in a second direction intersecting the first direction, the second layer has a second width in the second direction, the second width being wider than the first width,
the first layer includes a first lower surface and a first upper surface opposed to the first lower surface, the first upper surface being between the first lower surface and the second layer,
the second layer includes a second lower surface located on the first upper surface, and a second upper surface opposed to the second lower surface, the second lower surface being between the second upper surface and the first layer,
the second lower surface has a first region which is in contact with the first upper surface and a second region which is not in contact with the first upper surface, and the second region includes a part of an edge of the second lower surface,
wherein an entirety of the first upper surface is in contact with the second lower surface, and wherein the first layer has a first outermost edge and a second outermost edge facing the first outermost edge in the second direction, the second layer has a third outermost edge and a fourth outermost edge facing the third outermost edge in the second direction, and the third outermost edge, the first outermost edge, the second outermost edge, and the fourth outermost edge are arranged in this order in a plan view.

2. The sensor-equipped display device of claim 1 , wherein the second layer has a reflectivity lower than that of the first layer.

3. The sensor-equipped display device of claim 1 , wherein the first upper surface has a first outer edge in the second direction,
the second lower surface has a second outer edge in the second direction, and the second outer edge does not overlap the first outer edge in a plan view.

4. The sensor-equipped display device of claim 1 , wherein the second layer includes a color resin film.

5. The sensor-equipped display device of claim 1 , wherein the second layer includes a black resin film.

6. The sensor-equipped display device of claim 1 , wherein the second layer includes a light absorption film.

7. A sensor device comprising a substrate and a detection electrode above the substrate, wherein the detection electrode includes a first layer and a second layer formed on and in contact with the first layer,
one of the first and second layers is between the substrate and an other of the first and second layers,
the first and second layers run in a first direction,
the first layer has a first width in a second direction intersecting the first direction, the second layer has a second width in the second direction, the second width being wider than the first width,
the first layer includes a first lower surface and a first upper surface opposed to the first lower surface, the first upper surface being between the first lower surface and the second layer,
the second layer includes a second lower surface located on the first upper surface, and a second upper surface opposed to the second lower surface, the second lower surface being between the second upper surface and the first layer,
the second lower surface has a first region which is in contact with the first upper surface and a second region which is not in contact with the first upper surface, and the second region includes a part of an edge of the second lower surface,
wherein an entirety of the first upper surface is in contact with the second lower surface, and wherein the first layer has a first outermost edge and a second outermost edge facing the first outermost edge in the second direction, the second layer has a third outermost edge and a fourth outermost edge facing the third outermost edge in the second direction, and the third outermost edge, the first outermost edge, the second outermost edge, and the fourth outermost edge are arranged in this order in a plan view.

8. The sensor device of claim 7 , wherein the second layer has a reflectivity lower than that of the first layer.

9. The sensor device of claim 7 , wherein the first upper surface has a first outer edge in the second direction,
the second lower surface has a second outer edge in the second direction, and the second outer edge does not overlap the first outer edge in a plan view.

10. The sensor device of claim 7 , wherein the second layer includes a color resin film.

11. The sensor device of claim 7 , wherein the second layer includes a black resin film.

12. The sensor device of claim 7 , wherein the second layer includes a light absorption film.

Assignees

• Japan Display Inc

Inventors

• Ishizaki Koji
• Sonoda Daisuke
• Ide Tatsuya
• Ito Hiroyuki

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0445

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title