# US 2010/0167017 A1 · Method of making display component with curable paste composition

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- Number: US 2010/0167017 A1
- Document ID: US20100167017A1
- Status: Published application
- Kind: A1
- Application number: 12/376,978
- Filed: 2007-07-12
- Published: 2010-07-01
- Earliest claimed: 2006-09-01
- Assignees: 3M Innovative Properties Company
- Inventors: Yorinobu Takamatsu; Yusuke Saito; Akira Yoda
- Web page: https://patentgrep.com/patent/US20100167017A1

## CPC

- B29C 39/148: {characterised by the shape of the surface}
- B29K 2033/12: {Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate}
- Y10T 428/24579: with particulate matter
- 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)
- 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
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Methods of making a display panel component, rib precursor (i.e. curable paste) compositions, and articles comprising such cured and preferably sintered rib precursor compositions are described. The rib precursor (i.e. curable paste composition) comprises at least one curable aliphatic (meth)acryl binder having a low content of chlorine, fluorine, sulfur, and phosphorous and/or a molecular weight of at least 200 g/mole; a diluent; and inorganic particulate material. The low ionic content of the rib precursor is amenable to reducing corrosion, particularly of aluminum electrodes.

## Claims

### Claim at position 1

1-14. (canceled)

### Claim 15

A method of making a microstructured component comprising:
providing a mold having a polymeric microstructured surface;
placing a microstructure precursor composition between the microstructured surface of the mold and a substrate wherein the microstructure precursor comprises:
at least one curable aliphatic (meth)acryl binder having a total content of chlorine,
fluorine, bromine, sulfur, and phosphorus of less than 1.5 wt-%, and
at least one diluent, and
optionally inorganic particulate material;
curing the microstructure precursor material; and
removing the mold.

### Claim 16 (depends on 15)

The method of claim 15 wherein the aliphatic (meth)acryl binder is selected from an epoxy (meth)acrylate, a urethane (meth)acrylate, and mixture thereof.

### Claim 17

A curable paste composition comprising:
at least one curable aliphatic (meth)acryl binder having a solubility parameter and a total ionic content of chlorine, fluorine, bromine, sulfate, and phosphate of less than 1.5 wt-%;
at least one diluent having a solubility parameter less than the solubility parameter of the binder, and
inorganic particulate material.

### Claim 18 (depends on 17)

The curable paste composition of claim 17 wherein the binder comprises a curable aliphatic (meth)acrylate binder having at least three polymerizable (meth)acrylate groups.

### Claim 19 (depends on 17)

A display component comprising:
a transparent substrate and a plurality of barrier ribs disposed on the transparent substrate wherein the barrier ribs comprise the cured composition of claim 17.

### Claim 20

A curable paste composition comprising:
at least one curable aliphatic (meth)acryl binder a total content of chlorine, fluorine, bromine, sulfur, and phosphorus of less than 1.5 wt-%;
at least one diluent; and
inorganic particulate material.

### Claim 21 (depends on 20)

The curable paste of claim 20 wherein the aliphatic (meth)acryl binder is selected from an epoxy (meth)acrylate, a urethane (meth)acrylate, and mixture thereof.

### Claim at position 9

22-30. (canceled)

### Claim 31

A method of making a microstructured component comprising:
providing a mold having a polymeric microstructured surface;
placing a microstructure precursor composition between the microstructured surface of the mold and a substrate wherein the microstructure precursor comprises:
at least one curable aliphatic (meth)acryl binder having a solubility parameter;
at least one diluent having a molecular weight of at least 200 g/mole and a solubility
parameter less than the solubility parameter of the binder; and
optionally inorganic particulate material;
curing the microstructure precursor material; and
removing the mold.

### Claim 32

A curable paste composition comprising:
at least one curable aliphatic (meth)acryl binder having a solubility parameter;
at least one diluent having a molecular weight of at least 200 g/mole and a solubility parameter less than the solubility parameter of the binder; and inorganic particulate material.

### Claim 33 (depends on 32)

A display component comprising:
a transparent substrate and a plurality of barrier ribs disposed on a transparent substrate wherein the barrier ribs comprise the cured composition of claim 32.

### Claim 34 (depends on 17)

A microstructured component comprising:
a substrate and a plurality of microstructures disposed on the substrate wherein the microstructures comprise the cured composition of claim 17.

### Claim 35 (depends on 32)

A microstructured component comprising:
a substrate and a plurality of microstructures disposed on the substrate wherein the microstructures comprise the cured composition of claim 32.