US4456515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making polarizers comprising a multiplicity of parallel electrically conductive strips on a glass carrier
Assignee: Siemens AG
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Filing: 1979-04-11
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Granted: 1984-06-26
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Expires: 1999-04-11
Abstract
Abstract A method for producing polarizers, comprising a multiplicity of parallel electrically conductive strips on a glass carrier, having a raster measurement of approximately 1/10 of the light wave length, is characterized in that a layer having a wavy surface is provided of conductive material, having a surface waviness with a period of approximately 50 nm perpendicular to the vapor application direction carried on a glass carrier by means of vapor deposition, selective chemical deposition and the like, with a prescribed deposition angle, and a portion of the material is removed by particle bombardment at a prescribed bombardment angle, with either electrically neutral particles or ions, so that an arrangement of a multiplicity of microstrips is provided in which the microstrips are parallel to one another and separated from and thus electrically insulated from one another on a glass carrier plate.
Inventors
- 👤 Hans Krueger
- 👤 Hans Rehme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:36
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/225; C23C14/04; G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3058; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
96 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying an undulating-surfaced conductive layer on a glass carrier by vapor depositing the layer at a first predetermined angle to provide a surface waviness having a period of approximately 50 nm aligned crosswise of the vapor deposition direction; and bombarding the layer with particles at a second predetermined angle to remove portions of the layer and produce the spaced conductive micro-strips.
Claim 2
Dependent Claim
96 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying an undulating-surfaced conductive layer on a glass carrier by vapor depositing the layer at a first predetermined angle to provide a surface waviness having a period of approximately 50 nm aligned crosswise of the vapor deposition direction; and bombarding the layer with particles at a second predetermined angle to remove portions of the layer and produce the spaced conductive micro-strips.
Claim 3
Dependent Claim
22 words
The method of claim 1, wherein the step of bombarding is further defined as: bombarding the conductive layer with electrically neutral particles.
Claim 4
Dependent Claim
20 words
The method of claim 1, wherein the step of bombarding is further defined as: bombarding the conductive layer with ions.
Claim 5
Dependent Claim
23 words
The method of claim 3, comprising the further step of: neutralizing the electrical charge on the glass carrier caused by the ion bombardment.
Claim 6
Dependent Claim
63 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying a conductive layer on a glass carrier; and removing portions of the layer by bombarding the layer with particles at a predetermined angle to provide the micro-strips.
Claim 7
Dependent Claim
63 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying a conductive layer on a glass carrier; and removing portions of the layer by bombarding the layer with particles at a predetermined angle to provide the micro-strips.
Claim 8
Dependent Claim
22 words
The method of claim 5, wherein the step of bombarding is further defined as: bombarding the conductive layer with electrically neutral particles.
Claim 9
Dependent Claim
20 words
The method of claim 5, wherein the step of bombarding is further defined as: bombarding the conductive layer with ions.
Claim 10
Dependent Claim
23 words
The method of claim 7, comprising the further step of: neutralizing the electrical charge on the glass carrier caused by the ion bombardment.
Claim 11
Dependent Claim
83 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: impressing a microgroove pattern into the surface of a glass carrier by bombarding the carrier with particles at a first predetermined angle; and vapor depositing, at a second predetermined angle, conductive material on the surfaces of the microgrooves facing the source of deposition material to form the micro-strips.
Claim 12
Dependent Claim
83 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: impressing a microgroove pattern into the surface of a glass carrier by bombarding the carrier with particles at a first predetermined angle; and vapor depositing, at a second predetermined angle, conductive material on the surfaces of the microgrooves facing the source of deposition material to form the micro-strips.
Claim 13
Dependent Claim
22 words
The method of claim 9, wherein the step of bombarding is further defined as: bombarding the glass carrier with electrically neutral particles.
Claim 14
Dependent Claim
20 words
The method of claim 9, wherein the step of bombarding is further defined as: bombarding the glass carrier with ions.
Claim 15
Dependent Claim
23 words
The method of claim 11, comprising the further step of: neutralizing the electrical charge on the glass carrier caused by the ion bombardment.
Claim 16
Dependent Claim
79 words
The method of claim 9, wherein: the step of impressing is further defined by the step of selecting said first predetermined angle to provide a wave period in the range of >50 nm <5000 nm; and the step of vapor depositing is further defined by the step of orienting the vapor source at a second predetermined angle to provide an arrangement of micro-strips which exhibits a surface structure, in toto, which orients liquid crystal molecules at a specific angle.
Claim 17
Dependent Claim
29 words
The process of claim 13, comprising the step of: rotating the carrier about an axis perpendicular to its plane in order to carry out the step of vapor depositing.
Claim 18
Dependent Claim
19 words
The method of claim 14, wherein the step of rotating is further defined as: rotating the carrier by 90°.
Claim 19
Dependent Claim
30 words
The method of claim 13, comprising the step of: rotating the particle source about an axis perpendicular to the processing plane of the carrier prior to the vapor deposition step.
Claim 20
Dependent Claim
48 words
The method of claim 13, wherein the step of impressing is further defined as energizing a first particle gun; and the step of vapor depositing is further defined as energizing a second particle gun displaced at an angle about an axis perpendicular to the plane of the carrier.
Claim 21
Dependent Claim
45 words
The method of claim 13, further defined by the step of: adjusting said first and second predetermined angles at a predetermined ratio with respect to one another in order to produce the specific angle of the liquid crystal molecular alignment and a prescribed groove depth.
Claim 22
Dependent Claim
14 words
The method of claim 18, wherein said second predetermined angle is adjusted to 90°.
Claim 23
Dependent Claim
24 words
The method of claim 18, wherein the step of impressing is carried out parallel to the edges of the processing plane of the carrier.
Claim 24
Dependent Claim
24 words
The method of claim 18, wherein the step of impressing is carried out perpendicular to the edges of the processing plane of the carrier.
Claim 25
Dependent Claim
26 words
The method of claim 18, wherein the step of impressing is carried out parallel and perpendicular to the edges of the processing plane of the carrier.
Claim 26
Dependent Claim
24 words
The method of claim 18, wherein the step of impressing is carried out oblique to the edges of the processing plane of the carrier.
Claim 27
Dependent Claim
96 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying an undulating-surfaced conductive layer on a glass carrier by sputtering to deposit the layer at a first predetermined angle to provide a surface waviness having a period of approximately 50 nm aligned crosswise of the sputtering direction; and bombarding the layer with particles at a second predetermined angle to remove portions of the layer and produce the spaced conductive micro-strips.
Claim 28
Dependent Claim
96 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying an undulating-surfaced conductive layer on a glass carrier by sputtering to deposit the layer at a first predetermined angle to provide a surface waviness having a period of approximately 50 nm aligned crosswise of the sputtering direction; and bombarding the layer with particles at a second predetermined angle to remove portions of the layer and produce the spaced conductive micro-strips.
Claim 29
Dependent Claim
63 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: sputtering a conductive layer on a glass carrier; and removing portions of the layer by bombarding the layer with particles at a predetermined angle to provide the micro-strips.
Claim 30
Dependent Claim
63 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: sputtering a conductive layer on a glass carrier; and removing portions of the layer by bombarding the layer with particles at a predetermined angle to provide the micro-strips.
Claim 31
Dependent Claim
66 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying an undulating-surfaced conductive layer on a glass carrier by selective chemical deposition of the layer; and removing portions of the layer by particle bombardment to produce the spaced conductive micro-strips.
Claim 32
Dependent Claim
66 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying an undulating-surfaced conductive layer on a glass carrier by selective chemical deposition of the layer; and removing portions of the layer by particle bombardment to produce the spaced conductive micro-strips.
Claim 33
Dependent Claim
67 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying a conductive layer by selective chemical deposition on a glass carrier; and removing portions of the layer by bombarding the layer with particles at a predetermined angle to provide the micro-strips.
Claim 34
Dependent Claim
67 words
A maskless method of making a polarizer which comprises a plurality of parallel conductive micro-strips, with a raster spacing of approximately one-tenth of a predetermined wavelength, arranged on a glass carrier, comprising the steps of: applying a conductive layer by selective chemical deposition on a glass carrier; and removing portions of the layer by bombarding the layer with particles at a predetermined angle to provide the micro-strips.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |