Touch Panel and Electronic Device

• US 20160109998A1
• Filed: 10/13/2015
• Published: 04/21/2016
• Est. Priority Date: 10/15/2014
• Status: Abandoned Application

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Watanabe, Kazunori
• Application Number:
  US14/881,660
• Publication Number:
  US 20160109998A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 2203/04112 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 Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 77/111 Flexible substrates

Abstract

Provided is a touch panel or the like including a touch sensor that can perform high-speed detection and have high detection accuracy. The touch panel includes a data input device and a display panel. The data input device overlaps with the display panel and includes a light-blocking layer, first to third conductive layers, an insulating layer, and a coloring layer. The light-blocking layer overlaps with the first to third conductive layers. The first conductive layer overlaps with the third conductive layer. The second conductive layer overlaps with the third conductive layer. The second conductive layer is electrically connected to the third conductive layer. The widths of the first to third conductive layers are smaller than the width of the light-blocking layer. The first to third conductive layers are arranged to have a mesh pattern when seen from the top, and to surround pixels in the display panel.

Claims

1. A touch panel comprising:

a data input device; and

a display panel,

wherein the data input device overlaps with the display panel,

wherein the data input device comprises a light-blocking layer, a first conductive layer, a second conductive layer, a third conductive layer, and an insulating layer,

wherein the light-blocking layer overlaps with the first conductive layer, the second conductive layer, and the third conductive layer,

wherein the first conductive layer, the second conductive layer, and the insulating layer form a capacitor,

wherein the second conductive layer is electrically connected to the third conductive layer,

wherein widths of the first conductive layer, the second conductive layer, and the third conductive layer are each smaller than a width of the light-blocking layer,

wherein the first conductive layer, the second conductive layer, and the third conductive layer are arranged to have a mesh pattern in a plan view of the touch panel, and

wherein the first conductive layer, the second conductive layer, and the third conductive layer are arranged to surround pixels in the display panel.

2. The touch panel according to claim 1, wherein the data input device further comprises a coloring layer in contact with the light-blocking layer.

3. The touch panel according to claim 1, wherein the second conductive layer is electrically connected to the third conductive layer in an opening in the insulating layer.

4. The touch panel according to claim 1,

wherein the first conductive layer along an X direction and the second conductive layer along a Y direction are on a same surface, and

wherein the third conductive layer is at an intersection of the first conductive layer and the second conductive layer.

5. The touch panel according to claim 1, wherein the display panel comprises an organic EL element.

6. The touch panel according to claim 1, wherein the display panel comprises a liquid crystal element.

7. The touch panel according to claim 1, wherein a distance between adjacent portions of the first conductive layer, a distance between adjacent portions of the second conductive layer, and a distance between adjacent third conductive layers are each larger than a width of one pixel.

8. The touch panel according to claim 1, wherein the first conductive layer, the second conductive layer, and the third conductive layer contain a metal element selected from aluminum, silver, copper, palladium, chromium, tantalum, titanium, molybdenum, nickel, iron, cobalt, tungsten, manganese, and zirconium.

9. An electronic device comprising:

the touch panel according to claim 1;

a microphone; and

a speaker.

10. A touch panel comprising:

a data input device; and

a display panel,

wherein the data input device comprises a first substrate,

wherein the display panel comprises a second substrate,

wherein the first substrate and the second substrate are flexible,

wherein the data input device overlaps with the display panel,

wherein the data input device comprises a light-blocking layer, a first conductive layer, a second conductive layer, a third conductive layer, and an insulating layer,

wherein the light-blocking layer overlaps with the first conductive layer, the second conductive layer, and the third conductive layer,

wherein the first conductive layer, the second conductive layer, and the insulating layer form a capacitor,

wherein the second conductive layer is electrically connected to the third conductive layer,

wherein widths of the first conductive layer, the second conductive layer, and the third conductive layer are each smaller than a width of the light-blocking layer,

wherein the first conductive layer, the second conductive layer, and the third conductive layer are arranged to have a mesh pattern in a plan view of the touch panel, and

wherein the first conductive layer, the second conductive layer, and the third conductive layer are arranged to surround pixels in the display panel.

11. The touch panel according to claim 10, wherein the data input device further comprises a coloring layer in contact with the light-blocking layer.

12. The touch panel according to claim 10, wherein the second conductive layer is electrically connected to the third conductive layer in an opening in the insulating layer.

13. The touch panel according to claim 10,

wherein the first conductive layer along an X direction and the second conductive layer along a Y direction are on a same surface, and

wherein the third conductive layer is at an intersection of the first conductive layer and the second conductive layer.

14. The touch panel according to claim 10, wherein the display panel comprises an organic EL element.

15. The touch panel according to claim 10, wherein the display panel comprises a liquid crystal element.

16. The touch panel according to claim 10, wherein a distance between adjacent portions of the first conductive layer, a distance between adjacent portions of the second conductive layer, and a distance between adjacent third conductive layers are each larger than a width of one pixel.

17. The touch panel according to claim 10, wherein the first conductive layer, the second conductive layer, and the third conductive layer contain a metal element selected from aluminum, silver, copper, palladium, chromium, tantalum, titanium, molybdenum, nickel, iron, cobalt, tungsten, manganese, and zirconium.

18. An electronic device comprising:

the touch panel according to claim 10;

a microphone; and

a speaker.