WO1996018285A1 - Verfahren zum direkten und selektiven aufbringen von schutzschichten - Google Patents
Verfahren zum direkten und selektiven aufbringen von schutzschichten Download PDFInfo
- Publication number
- WO1996018285A1 WO1996018285A1 PCT/AT1995/000240 AT9500240W WO9618285A1 WO 1996018285 A1 WO1996018285 A1 WO 1996018285A1 AT 9500240 W AT9500240 W AT 9500240W WO 9618285 A1 WO9618285 A1 WO 9618285A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal
- protective layer
- nozzle
- covered
- application
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
- H05K3/061—Etching masks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/013—Inkjet printing, e.g. for printing insulating material or resist
Definitions
- the patent includes an improved method and devices for carrying out the method according to the preamble of claim 1.
- Printed circuit boards are manufactured by producing printed circuit board base material (which consists of the insulating carrier layer and the one- or two-sided full-surface copper layer) and subsequent production of the customer-specific printed circuit traces (layout). The process described here is to be used, among other things, starting from the base material for the production of the customer-specific conductor tracks.
- a photographic film of this template is first created in the methods currently used.
- the (metal) surface is coated over the entire surface with a photosensitive coating.
- the photosensitive coating on the (metal) surface is exposed and then developed, so that parts of this coating are removed in accordance with the photographic template. This can result in a positive image (the black parts in the template remain as a protective layer on the (metal) surface) or a negative image (the black parts in the template are removed and the (metal) surface is exposed) Template on the (metal) surface.
- Another common method of producing the cover layers on the circuit board base material is the use of screen printing techniques.
- a photographic film with the desired layout must also be exposed.
- a photo-sensitive substance is applied to a fine-mesh stainless steel or plastic mesh, exposed with the photographic film and developed. This creates a template for pressing the screen printing lacquer onto the circuit board base material using a doctor blade.
- the resolution that can be achieved depends on the mesh size of the screen printing fabric used.
- a non-metallic protective layer is applied to those parts of the
- ERSATZBLAH (RULE 26) The etching is stopped and the protective layer is removed, creating the desired conductor pattern.
- the non-metallic protective layer (4) is applied selectively and directly, so that only those parts of the (metal) surface (1) are coated that are necessary in the subsequent chemical, physical or combined chemical-physical treatment process (2). Those parts of the (metal) surface (1) where the treatment is to take place (3) are not covered.
- This selective and direct application of a non-metallic protective layer (4) to the (metal) surface (1) is achieved by the use of electronically controlled, positionable axes, which provide a mechanism for the selective application of a substance over the entire (metal) surface (1 ) position. It is possible that the
- the application mechanism consists of at least one nozzle which controllably dispenses a substance of variable volume and e.g. forms a grid of dots on the (metal) surface. As the solvent of the substance evaporates, neighboring application points run into a continuous film. After the substance has hardened, a protective layer (4) adheres to the (metal) surface (1).
- (metal) surfaces can not only be treated chemically, but also electro-chemically or physically.
- Metal surfaces are reinforced by means of galvanic methods and other surfaces can be cleaned or removed by sandblasting.
- a similar technique is used in the currently used ink jet printers, in which the print head is positioned over a white sheet of paper and ink is applied to the paper according to the electronic information. This results in a selective coating of the paper with ink, which at best results in a paper page printed with letters and / or drawings after the ink has dried.
- a (metal) surface (1) can also be coated with a protective layer (4) which is resistant to the subsequent chemical treatment process, using the same method for the selective application of ink to a white sheet of paper.
- an inkjet printer in such a way that it can pull in and print cut-out circuit board base material and use, for example, diluted LACOMIT from Canning Ltd., Birmingham, UK, as an ink replacement, a device for the direct and selective application of a non-metallic protective layer is realized.
- the adapted inkjet printer is controlled by a computer that the Has printed information of the surface coverage in electronic form in a file.
- This patent application includes the selective and direct application of a non-metallic protective layer (4) which is resistant to the subsequent chemical, physical or combined chemical-physical treatment onto a (metal) surface (1) with electronically positionable mechanisms, whereby only those parts are covered which should not be subjected to further chemical treatment (2).
- FIG. 1 Schematic cross-sectional representation of a (metal) surface which is selectively covered with a protective layer
- FIG. 1 shows a schematic representation of a cross section through a (metal) surface (1), some parts of the (metal) surface (1) being covered by a protective layer (4).
- a protective layer (4) In chemical, physical or combined chemical-physical treatment, only those parts of the (metal) surface (3) are
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Ink Jet (AREA)
- Chemically Coating (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU39742/95A AU3974295A (en) | 1994-12-09 | 1995-12-04 | Direct and selective process for applying protective layers |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA2296/94 | 1994-12-09 | ||
| AT229694 | 1994-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996018285A1 true WO1996018285A1 (de) | 1996-06-13 |
Family
ID=3531729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AT1995/000240 Ceased WO1996018285A1 (de) | 1994-12-09 | 1995-12-04 | Verfahren zum direkten und selektiven aufbringen von schutzschichten |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU3974295A (de) |
| WO (1) | WO1996018285A1 (de) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047884A1 (de) * | 1980-12-18 | 1982-07-15 | Siemens AG, 1000 Berlin und 8000 München | Vorrichtung zur automatisierbaren bearbeitung in der halbleitertechnologie, z.b. von leiterplatten |
| DE3728337A1 (de) * | 1987-08-25 | 1989-03-16 | Goerlitz Computerbau Gmbh | Verfahren zur herstellung von geaetzten leiterplatten |
| DE3740149A1 (de) * | 1987-11-26 | 1989-06-08 | Herbert Dr Strohwald | Verfahren zum herstellen eines leitermusters auf einem substrat |
| DE3842159A1 (de) * | 1988-12-15 | 1990-06-21 | Walter Kopisch | Verfahren zum herstellen von gedruckten schaltungen |
| WO1995023244A1 (en) * | 1994-02-25 | 1995-08-31 | The University Of Edinburgh | Surface treatment of an object |
-
1995
- 1995-12-04 WO PCT/AT1995/000240 patent/WO1996018285A1/de not_active Ceased
- 1995-12-04 AU AU39742/95A patent/AU3974295A/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047884A1 (de) * | 1980-12-18 | 1982-07-15 | Siemens AG, 1000 Berlin und 8000 München | Vorrichtung zur automatisierbaren bearbeitung in der halbleitertechnologie, z.b. von leiterplatten |
| DE3728337A1 (de) * | 1987-08-25 | 1989-03-16 | Goerlitz Computerbau Gmbh | Verfahren zur herstellung von geaetzten leiterplatten |
| DE3740149A1 (de) * | 1987-11-26 | 1989-06-08 | Herbert Dr Strohwald | Verfahren zum herstellen eines leitermusters auf einem substrat |
| DE3842159A1 (de) * | 1988-12-15 | 1990-06-21 | Walter Kopisch | Verfahren zum herstellen von gedruckten schaltungen |
| WO1995023244A1 (en) * | 1994-02-25 | 1995-08-31 | The University Of Edinburgh | Surface treatment of an object |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3974295A (en) | 1996-06-26 |
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