EP0079111A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Colour imaging device
Assignee: Koninklijke Philips NV
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Filing: 1982-11-09
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Granted: —
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Expires: 2002-11-09
Abstract
Abstract A colour filter having filter elements (4) respectively passing light of the colours red (R), green (G) and blue (B) is provided on a semiconductor image sensor (2) which comprises a system of photosensitive elements (3). The filter elements (4) are separated by grooves (5) which prevent the running of dye liquid during dyeing the various systems of filter elements (4) and hence the occurrence of colour defects. Instead of grooves (5) the filter elements (4) may also be separated by regions which have been converted into a structure which is substantially impervious to liquid. The colour filters may also be used in a cathode-ray tube for imaging colour pictures.
Inventors
- 👤 Howard Curtis Needs
- 👤 Lodewijk Blok
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:41
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/30; H10F77/306; H10F77/331; G; G03; G03F; G03F7/00; G03F7/0005; G03F7/0007; H04; H04N; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/134; H10F39/00; H10F39/80; H10F39/805; H10F39/8053
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
58 words
A colour imaging device comprising an imaging device and a colour filter which has one layer in which at least two systems of filter elements respectively passing light of different colours are formed by colouring filter elements T ith dyes, characterized in that the filter elements are separated from each other by separation regions provided in the layer.
Claim 2
Dependent Claim
58 words
A colour imaging device comprising an imaging device and a colour filter which has one layer in which at least two systems of filter elements respectively passing light of different colours are formed by colouring filter elements T ith dyes, characterized in that the filter elements are separated from each other by separation regions provided in the layer.
Claim 3
Dependent Claim
23 words
A colour imaging device as claimed in Claim 1, characterized in that the separation regions are formed by grooves provided in the layer.
Claim 4
Dependent Claim
32 words
A colour imaging device as claimed in Claim 1, characterized in that the separation regions are formed by regions which have been converted into a structure which is substantially impervious to liquid.
Claim 5
Dependent Claim
27 words
A colour imaging device as claimed in Claim 1, 2 or 3, characterized in that a light-impervious layer is provided at the area of the separation regions.
Claim 6
Dependent Claim
32 words
A colour imaging device as claimed in Claim 1, 2, 3 or 4, characterized in that the imaging device is formed by a semiconductor layer which has a system of photosensitive elements.
Claim 7
Dependent Claim
22 words
A colour imaging device as claimed in Claim 5, characterized in that the colour filter is provided directly on the semiconductor layer.
Claim 8
Dependent Claim
29 words
A colour imaging device as claimed in Claim 5, characterized in that the colour filter is provided on a transparent substrate, which substrate is connected to the semiconductor layer.
Claim 9
Dependent Claim
53 words
A colour imaging device as claimed in Claim 1, 2, 3 or 4, characterized in that the imaging device is formed by a cathode-ray tube comprising a window portion which on the inside has a photosensitive layer, and in that the colour filter is provided between the photosensitive layer and the window portion.
Claim 10
Dependent Claim
26 words
A colour imaging device as claimed in Claim 8, characterized in that the colour filter is provided directly on the window portion of the cathode-ray tube.
Claim 11
Dependent Claim
33 words
A colour imaging device as claimed in Claim 8, characterized in that the colour filter is provided on a transparent substrate, which substrate is provided on the window portion of the cathode-ray tube.
Claim 12
Independent Claim
114 words
A method of manufacturing a colour imaging device as claimed in any of the preceding Claims comprising the steps of a) providing a transparent layer on a substrate, b) providing, by means of a photolithographic process, a pattern of separation regions in the transparent layer to form filter elements in the layer, c) providing a barrier layer over the transparent layer, d) providing, by means of a photolithographic process, a pattern of apertures in the barrier layer, which pattern of apertures corresponds to a first system of filter elements, e) providing, via the apertures in the barrier layer, a dye in the filter elements of the first system, and f) removing the barrier layer.
Claim 13
Dependent Claim
30 words
A method as claimed in Claim 11, characterized in that the steps c) to f) are repeated to form further systems of filter elements passing light of a different colour.
References Cited (Backward Citations)
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