# US 9,040,992 B2 · Display device

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- Number: US 9,040,992 B2
- Document ID: US9040992B2
- Status: Granted
- Kind: B2
- Application number: 13/870,732
- Filed: 2013-04-25
- Published: 2013-10-31
- Granted: 2015-05-26
- Earliest claimed: 2012-04-26
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Masami Hayashi; Kenichi Miyamoto; Kazushi Yamayoshi; Junichi Tsuchimichi
- Web page: https://patentgrep.com/patent/US9040992B2

## CPC

- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G02B 1/116: including electrically conducting layers
- G02F 1/1345: Conductors connecting electrodes to cell terminals
- G02F 1/13458: {Terminal pads}
- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- H05K 1/0269: {for visual or optical inspection}
- H05K 1/0274: {Optical details, e.g. printed circuits comprising integral optical means (H05K1/0269 takes precedence; coupling light guides with opto-electronic components G02B6/42)}
- H05K 1/0298: {Multilayer circuits}
- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- G02F 1/13629: {Multilayer wirings}
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- 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
- 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

A display device includes a laminated wiring formed of a low-resistance conductive film, and a low-reflection film mainly containing Al and functioning as an antireflective film which are sequentially arranged on a transparent substrate, a wiring terminal part provided at an end part of the laminated wiring and has the same laminated structure as that of the laminated wiring, and an insulating film for covering the laminated wiring and the wiring terminal part, in which the insulating film side serves as a display surface side, the wiring terminal part has a first opening part penetrating the insulating film and the low-reflection film and reaching the low-resistance conductive film, and an outer peripheral portion of the first opening part has a laminated structure of the low-resistance conductive film, the low-reflection film, and the insulating film, in at least one part.

## Claims

### Claim 1

A display device comprising:
a laminated wiring comprising a conductive film, and an antireflective film sequentially arranged on a base layer;
a wiring terminal part provided at an end part of said laminated wiring and having a same laminated structure as that of said laminated wiring; and
an insulating film for covering said laminated wiring and said wiring terminal part, in which said insulating film side serves as a display surface side, wherein
said wiring terminal part has a first opening part penetrating said insulating film and said antireflective film and reaching said conductive film, and
an outer peripheral portion of said first opening part has a laminated structure of said conductive film, said antireflective film, and said insulating film, in at least one part.

### Claim 2 (depends on 1)

The display device according to claim 1, further comprising:
at least one of a mark and an identification mark covered with said insulating film and used in a manufacturing step, wherein
each of said mark and said identification mark comprises:
a laminated film of said conductive film and said antireflective film, and
a second opening part penetrating said insulating film and said antireflective film and reaching said conductive film, and
an outer peripheral portion of said second opening part has a laminated structure of said conductive film, said antireflective film, and said insulating film, in at least one part.

### Claim 3 (depends on 1)

The display device according to claim 1, further comprising:
a mark covered with said insulating film and used in a manufacturing step, wherein
said mark comprises:
a laminated film of said conductive film and said antireflective film, and
a film thickness of said antireflective film of said laminated film is formed to be thinner than a film thickness of said antireflective film of said laminated wiring.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein
a film thickness of said antireflective film of said wiring terminal part is formed to be the same as a film thickness of said antireflective film of said mark.

### Claim 5 (depends on 1)

The display device according to claim 1, further comprising:
a mark covered with said insulating film and used in a manufacturing step, wherein
said mark comprises:
a laminated film of said conductive film, said antireflective film, a cap film functioning as an etching protective film, and a non-low-reflection film having reflectivity of 30% or more.

### Claim 6

A display device comprising:
a laminated wiring comprising a conductive film, and an antireflective film sequentially arranged on a base layer;
a wiring terminal part provided at an end part of said laminated wiring; and
an insulating film for covering said laminated wiring and said wiring terminal part, in which said insulating film side serves as a display surface side, wherein
said wiring terminal part comprises said conductive film,
said wiring terminal part has a first opening part penetrating said insulating film and reaching said conductive film, and
an outer peripheral portion of said first opening part has a laminated structure of said conductive film, and said insulating film, in at least one part.

### Claim 7 (depends on 6)

The display device according to claim 6, further comprising:
a mark covered with said insulating film and used in a manufacturing step, wherein
said mark comprises said conductive film.

### Claim 8

A display device comprising:
a laminated wiring comprising a conductive film, and a multilayered reflection reducing film having a reflection preventing effect due to a light interference effect, sequentially arranged on a base layer;
a wiring terminal part provided at an end part of said laminated wiring and having a same laminated structure as that of said laminated wiring; and
an insulating film for covering said laminated wiring and said wiring terminal part, in which said insulating film side serves as a display surface side, wherein
said wiring terminal part has a first opening part penetrating said insulating film and said reflection reducing film and reaching said conductive film, and
an outer peripheral portion of said first opening part has a laminated structure of said conductive film, said reflection reducing film, and said insulating film, in at least one part.

### Claim 9 (depends on 8)

The display device according to claim 8, further comprising:
a mark covered with said insulating film and used in a manufacturing step, wherein
said mark comprises a laminated film of said conductive film, and said reflection reducing film having at least one layer removed or thinned.

### Claim 10 (depends on 8)

The display device according to claim 8, wherein
said reflection reducing film comprises a transparent film and a translucent film sequentially arranged on said conductive film.

### Claim 11 (depends on 8)

The display device according to claim 8, wherein
said reflection reducing film comprises a transparent film, a translucent film, and a transparent film sequentially arranged on said conductive film.