# US 12,181,922 B2 · Apparatus and digitizer with sensing lines disposed on base layer and holes to improve folding

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- Number: US 12,181,922 B2
- Document ID: US12181922B2
- Status: Granted
- Kind: B2
- Application number: 18/368,231
- Filed: 2023-09-14
- Published: 2024-01-04
- Granted: 2024-12-31
- Earliest claimed: 2020-09-04
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Hirotsugu Kishimoto; Hyun-Been Hwang
- Web page: https://patentgrep.com/patent/US12181922B2

## CPC

- G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)}
- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position}
- G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 3/0443: {using a single layer of sensing electrodes}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G06F 3/046: by electromagnetic means
- G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- G06F 2203/04106: Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A digitizer includes a base member including a front surface and a rear surface opposing the front surface, first sensing lines disposed on the base member, arranged in a second direction, and extending in a first direction crossing the first direction, and second sensing lines disposed on the base member, spaced apart from the first sensing lines, arranged in the first direction, and extending in the second direction. The base member is foldable about an imaginary folding axis extending in the second direction and is provided with a through-hole penetrating at least a portion of the base member. The through-hole is surrounded by the first sensing lines and the second sensing lines.

## Claims

### Claim 1

A digitizer comprising:
a base member comprising a front surface and a rear surface opposing the front surface;
first sensing lines disposed on the base member, arranged in a first direction, and extending in a second direction crossing the first direction; and
second sensing lines disposed on the base member, spaced apart from the first sensing lines, arranged in the second direction, and extending in the first direction,
wherein the base member is foldable about an imaginary folding axis extending in the second direction and is provided with a plurality of through-holes penetrating at least a portion thereof, and
the through-holes are arranged in the first direction and the second direction to be spaced apart from each other and surrounded by the first sensing lines and the second sensing lines,
wherein the base member comprises:
a base layer comprising a front surface on which the first sensing lines are disposed and a rear surface on which the second sensing lines are disposed, the rear surface opposing the front surface;
a first photosensitive resin layer disposed on the front surface of the base layer and providing the front surface of the base member; and
a second photosensitive resin layer disposed on the rear surface of the base layer and providing the rear surface of the base member,
wherein the front surface of the base layer comprises a first line area in which the first sensing lines are disposed and a first non-line area defined between the first sensing lines, and the rear surface of the base layer comprises a second line area in which the second sensing lines are disposed and a second non-line area defined between the second sensing lines.

### Claim 2 (depends on 1)

The digitizer of claim 1, wherein the through-hole comprises:
a first through-hole overlapping the first non-line area in a plan view and penetrating the first photosensitive resin layer to expose the front surface of the base layer; and
a second through-hole overlapping the second non-line area in the plan view and penetrating the second photosensitive resin layer to expose the rear surface of the base layer.

### Claim 3 (depends on 2)

The digitizer of claim 2, wherein the base member further defines:
a first additional hole overlapping the first line area and defined from the front surface of the base member with a certain depth; and
a second additional hole overlapping the second line area and defined from the rear surface of the base member with a certain depth.

### Claim 4

An electronic apparatus comprising:
a window;
a display module disposed under the window; and
a digitizer disposed under the display module,
wherein the digitizer comprises:
a base member comprising a front surface adjacent to the display module and a rear surface opposing the front surface; and
first and second sensing lines disposed on the base member, arranged in a first direction and a second direction, respectively, spaced apart and insulated from each other, the second direction crossing the first direction,
wherein the display module is foldable about an imaginary folding axis extending in the second direction, the digitizer is provided with a plurality of through-holes penetrating at least a portion of the base member, and the through-holes are arranged in the first direction and the second direction to be spaced apart from each other and surrounded by the first sensing lines and the second sensing lines,
wherein the base member comprises:
a base layer comprising a front surface on which the first sensing lines are disposed and a rear surface on which the second sensing lines are disposed, the rear surface opposing the front surface;
a first photosensitive resin layer disposed on the front surface of the base layer and providing the front surface of the base member; and
a second photosensitive resin layer disposed on the rear surface of the base layer and providing the rear surface of the base member,
wherein the front surface of the base layer comprises a first line area in which the first sensing lines are disposed and a first non-line area defined between the first sensing lines, and the rear surface of the base layer comprises a second line area in which the second sensing lines are disposed and a second non-line area defined between the second sensing lines.

### Claim 5 (depends on 4)

The electronic apparatus of claim 4, wherein the through-hole comprises:
a first through-hole overlapping the first non-line area in a plan view and penetrating the first photosensitive resin layer to expose the front surface of the base layer; and
a second through-hole overlapping the second non-line area in the plan view and penetrating the second photosensitive resin layer to expose the rear surface of the base layer.

### Claim 6 (depends on 5)

The electronic apparatus of claim 5, wherein the base member further defines:
a first additional hole overlapping the first line area and defined from the front surface of the base member with a certain depth; and
a second additional hole overlapping the second line area and defined from the rear surface of the base member with a certain depth.