# US 2005/0176170 A1 · Process for the manufacture of large area arrays of discrete components

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- Number: US 2005/0176170 A1
- Document ID: US20050176170A1
- Status: Published application
- Kind: A1
- Application number: 10/502,699
- Filed: 2002-03-04
- Published: 2005-08-11
- Earliest claimed: 2001-03-02
- Assignees: Electrox Corporation
- Inventors: Robert Detig
- Web page: https://patentgrep.com/patent/US20050176170A1

## CPC

- G03G 15/10: using a liquid developer
- G03G 15/6591: {characterised by the recording material, e.g. plastic material, OHP, ceramics, tiles, textiles (details transferring the toner pattern onto particular materials G03G15/1625)}
- G03G 2215/00523: Other special types, e.g. tabbed
- G03G 2215/0658: Liquid developer devices
- H10W 72/0198: {batch processes}
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

Electrostatic printing methods are used to allow the precise placement of small, discrete components on a substrate. The components are configured as liquid toners by coating one or more surfaces with a charge control agent which reacts with a charge director in a diluent to create a charge on the coated components allowing them to be manipulated and placed using electrical fields.

## Claims

### Claim 1

A method for the precise placement of one or more discrete components on a substrate comprising:
A. coating said one or more components with a charge control agent;
B. dispersing said coated components in an aliphatic hydrocarbon diluent containing charge director material;
wherein said charge control agent and said charge director material interact to impart an ionic charge on the coated components and an oppositely charged micelles in said diluent;
C. applying a first electrical voltage opposite tat of the charge on said components to an image plate having one or more cavities corresponding to the desired placement of said one or more components; thereby pulling said components into said cavities;
D. placing said substrate proximate to said image plate;
E. reducing said first electrical voltage and applying a second electrical voltage opposite that of the charge on said components to said substrate;
thereby pulling and affixing said components to said substrate.

### Claim 2 (depends on 1)

The method of claim 1 wherein said one or more cavities and said components are complimentarily tapered to facilitate a desired orientation of said components in said cavities.

### Claim 3 (depends on 1)

The method of claim 1 wherein said components are silicon-based die.

### Claim 4 (depends on 1)

The method of claim 1 wherein said imaging plate is part of said substrate thereby steps D and E are not needed.

### Claim 5 (depends on 1)

The method of claim 1 wherein said charge control agent has an acid or base group available for reaction.

### Claim 6 (depends on 5)

The method of claim 5 wherein said charge director reacts with said available acid or base group to form an acid-base complex.

### Claim 7

A method for the precise placement of one or more discrete components on a substrate comprising:
A. coating said one or more components with a charge control agent;
B. dispersing said coated components in an aliphatic hydrocarbon diluent containing charge director material;
wherein said charge control agent and said charge director material interact to impart an ionic charge on the coated components and an oppositely charged micelles in said diluent; and,
C. applying an electrical voltage opposite tat of the charge on said components to an image plate having one or more cavities corresponding to the desired placement of said one or more components; thereby pulling said components into said cavities.

### Claim 8 (depends on 7)

The method of claim 7 wherein said one or more cavities and said components are complimentarily tapered to facilitate a desired orientation of said components in said cavities.

### Claim 9 (depends on 7)

The method of claim 7 wherein said components are silicon-based die.

### Claim 10 (depends on 7)

The method of claim 7 wherein said charge control agent has an acid or base group available for reaction.

### Claim 11 (depends on 10)

The method of claim 10 wherein said charge director reacts with said available acid or base group to form an acid-base complex.

### Claim 12 (depends on 7)

The method of claim 7 further comprising step:
D. removing said image plate from said substrate.