# US 12,633,651 B2 · Wiring board, module, and image display apparatus

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- Number: US 12,633,651 B2
- Document ID: US12633651B2
- Status: Granted
- Kind: B2
- Application number: 18/624,600
- Filed: 2024-04-02
- Published: 2024-08-01
- Granted: 2026-05-19
- Earliest claimed: 2021-10-04
- Assignees: Dai Nippon Printing Co., Ltd.
- Applicants: Dai Nippon Printing Co., Ltd.
- Inventors: Keita Iimura; Kazuki Kinoshita; Masashi Sakaki; Seiji Take; Shuji Kawaguchi
- Web page: https://patentgrep.com/patent/US12633651B2

## CPC

- H01Q 1/24: with receiving set
- H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)}
- H01Q 1/22: by structural association with other equipment or articles
- H01Q 21/06: Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q 21/061: {Two dimensional planar arrays}
- H01Q 21/065: {Patch antenna array}
- 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 1/0296: {Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18)}
- H05K 1/165: {incorporating printed inductors}
- H05K 1/18: structurally associated with non-printed electric components (H05K1/16 takes precedence)
- H05K 2201/0108: Transparent
- H05K 2201/09681: Mesh conductors, e.g. as a ground plane
- H05K 2201/09781: Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components
- H05K 2201/10098: Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas
- H05K 2201/10128: Display
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A wiring board includes a substrate and a mesh wiring layer and has an electromagnetic wave transceiver function. The substrate is transparent. The mesh wiring layer serves as an antenna and includes a wiring line. Two or more opening portions are formed by being surrounded by the wiring line. A planar shape of each opening portion is polygonal that has opposing sides parallel with each other. 95% or more opening portions among 100 opening portions or all of the opening portions satisfy a relationship of 0.70D≤d≤0.98D or satisfy a relationship of 1.02D≤d≤1.30D, where d is distances between sides that extend in a first direction regarding the opening portions, and D is an average value of the distances between the sides that extend in the first direction regarding the 100 opening portions continuously adjacent to each other or all of the opening portions.

## Claims

### Claim 1

A wiring board comprising:
a substrate that has a first surface and a second surface that is opposite the first surface; and
a mesh wiring layer that is disposed on the first surface of the substrate,
wherein the wiring board has an electromagnetic wave transceiver function,
wherein the substrate is transparent,
wherein the mesh wiring layer serves as an antenna and includes a wiring line,
wherein two or more opening portions are formed by being surrounded by the wiring line,
wherein a planar shape of each of the opening portions is a polygonal shape that has opposing sides parallel with each other, and
wherein 95% or more opening portions among 100 opening portions or all of the opening portions
satisfy a relationship of
0.70D≤d≤0.98D or
satisfy a relationship of
1.02D≤d≤1.30D, where
d is distances between sides that extend in a first direction regarding the opening portions, and
D is an average value of the distances between the sides that extend in the first direction regarding the 100 opening portions continuously adjacent to each other or all of the opening portions.

### Claim 2 (depends on 1)

The wiring board according to claim 1, wherein the 95% or more opening portions among the 100 opening portions or all of the opening portions
satisfy a relationship of
0.85D≤d≤0.98D or
satisfy a relationship of
1.02D≤d≤1.15D.

### Claim 3 (depends on 1)

The wiring board according to claim 1, wherein the 95% or more opening portions among the 100 opening portions or all of the opening portions
satisfy a relationship of
0.90D≤d≤0.98D or satisfy a relationship of
1.02D≤d≤1.10D.

### Claim 4 (depends on 1)

The wiring board according to claim 1, wherein the polygonal shape is a quadrilateral shape.

### Claim 5 (depends on 1)

The wiring board according to claim 1, wherein the polygonal shape is a hexagonal shape.

### Claim 6 (depends on 1)

The wiring board according to claim 1, wherein the average value D is 50 μm or more and 500 μm or less.

### Claim 7 (depends on 1)

The wiring board according to claim 1, wherein a linewidth of the wiring line is 0.5 μm or more and 3 μm or less.

### Claim 8 (depends on 1)

The wiring board according to claim 1, wherein an aperture ratio of the mesh wiring layer as a whole is 95% or more and less than 100%.

### Claim 9 (depends on 1)

The wiring board according to claim 1, wherein a sheet resistance value of the mesh wiring layer is 4Ω/□ or less.

### Claim 10 (depends on 1)

The wiring board according to claim 1, wherein the wiring board has a millimeter wave transceiver function, and the mesh wiring layer serves as an array antenna that includes two or more antenna elements.

### Claim 11 (depends on 10)

The wiring board according to claim 10, wherein four or more of the antenna elements are provided, and distances between the antenna elements are 1 mm or more and 5 mm or less.

### Claim 12 (depends on 1)

The wiring board according to claim 1, wherein a dummy wiring layer that is electrically separated from the mesh wiring layer is provided around the mesh wiring layer.

### Claim 13 (depends on 12)

The wiring board according to claim 12, wherein the dummy wiring layer includes two or more dummy wiring lines, and the dummy wiring lines are parallel with the wiring line.

### Claim 14 (depends on 12)

The wiring board according to claim 12, wherein two or more of the dummy wiring layers are provided, and aperture ratios of the mesh wiring layer and the dummy wiring layers increase stepwise in order from the mesh wiring layer to the dummy wiring layers far from the mesh wiring layer.

### Claim 15 (depends on 1)

A module comprising: the wiring board according to claim 1; and
a power supply line that is electrically connected to the wiring board.

### Claim 16 (depends on 15)

An image display apparatus comprising: the module according to claim 15; and a display device that is stacked with the wiring board of the module.

### Claim 17

A wiring board comprising:
a substrate that has a first surface and a second surface that is opposite the first surface;
a mesh wiring layer that is disposed on the first surface of the substrate; and
a power supply portion that is electrically connected to the mesh wiring layer,
wherein the substrate is transparent,
wherein the mesh wiring layer includes a transmission portion that is connected to the power supply portion and a transceiver portion that is connected to the transmission portion,
wherein the mesh wiring layer includes a wiring line that serves as the transmission portion and the transceiver portion,
wherein two or more opening portions are formed by being surrounded by the wiring line,
wherein a planar shape of each of the opening portions is a polygonal shape that has opposing sides parallel with each other, and
wherein 95% or more opening portions among 100 opening portions or all of the opening portions satisfy a relationship of
0.70D≤d≤0.98D or
satisfy a relationship of
1.02D≤d≤1.30D, where
d is distances between sides that extend in a first direction regarding the opening portions, and
D is an average value of the distances between the sides that extend in the first direction regarding the 100 opening portions continuously adjacent to each other or all of the opening portions.

### Claim 18 (depends on 17)

A module comprising: the wiring board according to claim 17; and
a power supply line that is electrically connected to the wiring board.

### Claim 19 (depends on 18)

An image display apparatus comprising: the module according to claim 18; and a display device that is stacked with the wiring board of the module.