# US 10,864,698 B2 · Treated liquid crystal polymer resin sheet and resin multilayer substrate

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- Number: US 10,864,698 B2
- Document ID: US10864698B2
- Status: Granted
- Kind: B2
- Application number: 15/907,355
- Filed: 2018-02-28
- Published: 2018-07-05
- Granted: 2020-12-15
- Earliest claimed: 2015-09-11
- Assignees: Murata Manufacturing Co., Ltd.
- Applicants: Murata Manufacturing Co., Ltd.
- Inventors: Syota Chino; Hiroyuki Ohata
- Web page: https://patentgrep.com/patent/US10864698B2

## CPC

- B32B 3/263: {characterised by a layer having non-uniform thickness}
- B29C 43/18: incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles {(B29C43/206 takes precedence)}
- B29C 59/16: by wave energy or particle radiation {, e.g. infrared heating (B29C59/007 takes precedence)}
- B29C 65/02: by heating, with or without pressure
- B29C 66/0246: {Cutting or perforating, e.g. burning away by using a laser or using hot air (simultaneously welding and severing using a fluid B29C65/7471; simultaneously welding and severing using radiation B29C65/7473; cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article B29C69/005)}
- B29C 66/1122: {Single lap to lap joints, i.e. overlap joints (B29C66/45, B29C66/472, B29C66/52272 take precedence)}
- B29C 66/3034: {making use of additional elements, e.g. meshes}
- B29C 66/45: {Joining of substantially the whole surface of the articles (methods or apparatus for laminating B32B37/00)}
- B29C 66/721: {Fibre-reinforced materials (B29C66/729 takes precedence)}
- B32B 3/02: characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)}
- B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)}
- B32B 7/04: Interconnection of layers
- B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)}
- B32B 27/08: of synthetic resin
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/281: {comprising polyimides}
- B32B 37/065: {resulting in the laminate being partially bonded (B32B37/0076 takes precedence)}
- C08J 5/121: {by heating}
- H05K 3/4635: {laminating flexible circuit boards using additional insulating adhesive materials between the boards}
- B29C 65/7832: {by setting the overlap between the parts to be joined, e.g. the overlap between sheets, plates or web-like materials}
- B29C 2791/009: Using laser
- B29K 2995/004: Semi-crystalline
- B29L 2009/00: Layered products
- B32B 2250/24: All layers being polymeric
- B32B 2250/44: Number of layers variable across the laminate
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/704: Crystalline
- B32B 2307/732: Dimensional properties
- B32B 2398/00: Unspecified macromolecular compounds
- C08J 2300/20: Polymers characterized by their physical structure
- H05K 2201/0141: Liquid crystal polymer [LCP]
- H05K 2203/107: Using laser light
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A treated liquid crystal polymer resin sheet includes a main surface, a non-fiberized portion in which fibrous crystalline portions and a non-crystalline portion filling a gap between the crystalline portions are provided, and a fiberized portion in which the fibrous crystalline portions is exposed at the main surface with a gap between the crystalline portions that is unfilled.

## Claims

### Claim 1

A treated liquid crystal polymer resin sheet comprising:
a main surface;
a non-fiberized portion in which fibrous crystalline portions and a non-crystalline portion filling a gap between the fibrous crystalline portions are provided; and
a fiberized portion in which the fibrous crystalline portions are exposed at the main surface with a gap between the fibrous crystalline portions that is unfilled; wherein
the fibrous crystalline portions include liquid crystal polymer resin.

### Claim 2

A resin multilayer substrate comprising:
a plurality of liquid crystal polymer resin sheets that are stacked, thermocompression-bonded, and integrated together; wherein
the resin multilayer substrate includes a main surface exposed to an outside; and
the main surface includes a non-fiberized portion in which fibrous crystalline portions and a non-crystalline portion filling a gap between the fibrous crystalline portions are provided, and a fiberized portion in which the fibrous crystalline portions are exposed at the main surface with a gap between the fibrous crystalline portions that is unfilled.