EP0333260A1
Expired / Lapsed
EP
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Charge-coupled device
Assignee: Koninklijke Philips NV
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Filing: 1989-03-09
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Granted: —
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Expires: 2009-03-09
Abstract
Abstract In CCD arrangements, such as bidimensional image sensors, it is usual to provide the output register in the form of two (or more) horizontal registers. Via transverse connections between the horizontal registers, charge packets are transported from one horizontal register to the other horizontal register. In order to avoid delays during this transverse transport due to narrow channel effects, the clock electrodes of the first horizontal register adjoining the transverse connections are widened at the expense of adjacent clock electrodes. These widened electrodes may be in the trapezoidal form, as a result of which additional drift fields are induced below these electrodes.
Inventors
- 👤 Albert Joseph Pierre Theuwissen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 04:48
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/15; H10F39/153; H10F39/1536; H04; H04N; H04N25/00; H04N25/70; H04N25/71; H04N25/713; H04N25/72
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A charge-coupled device having a semiconductor body comprising at least two adjacent charge transport channels defined at a surface and having parallel charge transport directions and two rows of clock electrodes provided on the surface and extending in the longitudinal direction of the charge transport channels for applying clock voltages for controllably storing information representing charge packets in charge storage regions in the charge transport channels and for transporting charge packets from one charge storage region to a next charge storage region, while between the two charge transport channels is provided at least one connection channel, which is limited by channel limiting regions and via which charge packets can be transferred from a charge storage region in the first charge transport channel to the second charge transport channel, characterized in that the clock electrode associated with the said first charge storage region in the first charge transport channel is wider at least on the side adjoining the connection channel than the clock electrode associated with an adjacent charge storage region in the first charge transport channel.
Claim 2
Dependent Claim
176 words
A charge-coupled device having a semiconductor body comprising at least two adjacent charge transport channels defined at a surface and having parallel charge transport directions and two rows of clock electrodes provided on the surface and extending in the longitudinal direction of the charge transport channels for applying clock voltages for controllably storing information representing charge packets in charge storage regions in the charge transport channels and for transporting charge packets from one charge storage region to a next charge storage region, while between the two charge transport channels is provided at least one connection channel, which is limited by channel limiting regions and via which charge packets can be transferred from a charge storage region in the first charge transport channel to the second charge transport channel, characterized in that the clock electrode associated with the said first charge storage region in the first charge transport channel is wider at least on the side adjoining the connection channel than the clock electrode associated with an adjacent charge storage region in the first charge transport channel.
Claim 3
Dependent Claim
38 words
A charge-coupled device as claimed in Claim 1, characterized in that the said clock electrode associated with the first charge storage region has a larger width on the side adjoining the connection channel than on the opposite side.
Claim 4
Dependent Claim
17 words
A charge-coupled device as claimed in Claim 2, characterized in that the said clock electrode is trapezoidal.
Claim 5
Dependent Claim
80 words
A charge-coupled device as claimed in any one of Claims 1 to 3, characterized in that the two adjacent charge transport channels are constituted by n-phase devices, while each group of n electrodes of the first charge transport channel contains a charge storage electrode, which corresponds to a connection channel and which has a larger width at least on the side adjoining the connection channel than the remaining charge storage electrodes in the same group, which have relatively equal widths.
Claim 6
Dependent Claim
32 words
A charge-coupled device as claimed in any one of the preceding Claims, characterized in that the first and the second charge transport channel constitute the read-out register of a bidimensional image sensor.
References Cited (Backward Citations)
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