# US 2021/0276301 A1 · Protection tape for printed circuit board and display device including the same

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- Number: US 2021/0276301 A1
- Document ID: US20210276301A1
- Status: Published application
- Kind: A1
- Application number: 17/329,818
- Filed: 2021-05-25
- Published: 2021-09-09
- Earliest claimed: 2016-04-19
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Jun Namkung; Sujin Jung; Hyunkyu Choi
- Web page: https://patentgrep.com/patent/US20210276301A1

## CPC

- B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)}
- B32B 3/263: {characterised by a layer having non-uniform thickness}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/08: of synthetic resin
- B32B 15/09: comprising polyesters
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)}
- B32B 27/281: {comprising polyimides}
- B32B 27/36: comprising polyesters
- H05K 3/281: {by means of a preformed insulating foil (H05K3/284 takes precedence)}
- B32B 2250/03: 3 layers
- B32B 2307/202: Conductive
- B32B 2307/206: Insulating
- B32B 2307/51: Elastic
- B32B 2405/00: Adhesive articles, e.g. adhesive tapes
- B32B 2457/08: PCBs, i.e. printed circuit boards
- B32B 2457/10: Batteries
- B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays
- B32B 2571/00: Protective equipment
- H05K 3/285: {Permanent coating compositions}
- H05K 3/387: {for electroless plating (H05K3/4661 takes precedence)}
- H05K 2201/0129: Thermoplastic polymer, e.g. auto-adhesive layer; Shaping of thermoplastic polymer
- H05K 2201/0145: Polyester, e.g. polyethylene terephthalate [PET], polyethylene naphthalate [PEN]
- H05K 2201/0154: Polyimide
- H05K 2201/0191: wherein the thickness of the dielectric plays an important role
- H05K 2201/0195: Dielectric or adhesive layers comprising a plurality of layers, e.g. in a multilayer structure
- H05K 2203/0557: Non-printed masks
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A protection tape for a printed circuit board (PCB) includes an insulating base plate, a conductive layer over the insulating base plate, and an adhesive layer over the conductive layer, the adhesive layer including a main part having a first thickness and a subsidiary part having a second thickness less than the first thickness, the main part corresponding to at least a center portion of the insulating base plate and the subsidiary part being arranged at an outside of the main part.

## Claims

### Claim 1

A protection tape for a printed circuit board (PCB), the protection tape comprising:
an insulating base plate;
a conductive layer over the insulating base plate; and
an adhesive layer over the conductive layer, the adhesive layer including a main part having a first thickness and a subsidiary part having a second thickness less than the first thickness, the main part corresponding to at least a center portion of the insulating base plate and the subsidiary part being arranged at an outside of the main part,
wherein the conductive layer includes a center part having a third thickness, and an edge part having a fourth thickness greater than the third thickness, the center part of the conductive layer corresponding to the main part of the adhesive layer and the edge part corresponding to the subsidiary part of the adhesive layer.

### Claim 2 (depends on 1)

The protection tape for a PCB as claimed in claim 1, wherein a distance from an upper surface of the insulating base plate to an upper surface of the main part of the adhesive layer is the same as a distance from the upper surface of the insulating base plate to an upper surface of the subsidiary part of the adhesive layer.

### Claim 3 (depends on 1)

The protection tape for a PCB as claimed in claim 1, wherein
the subsidiary part includes a first subsidiary part positioned at one side of the main part and a second subsidiary part positioned at another side of the main part, the first subsidiary part and the second subsidiary part being spaced apart from the main part,
and wherein:
the main part includes a groove in an upper surface of the main part, the groove extending in a direction between the second subsidiary part and the first subsidiary part, or
the main part includes an opening in the upper surface of the main part, the opening extending in the direction between the second subsidiary part and the first subsidiary part in an upper surface of the main part.