摘要:
In a CCD image sensor, a plurality of horizontal CCD registers are disposed adjacent to an image sensing area having matrix-arrayed image sensing cells and a plurality of vertical CCD registers. In the CCD image sensor, the channel impurity concentration of second horizontal CCD register, located away from the image sensing area, is more higher than that of first horizontal CCD register. With this feature, when the charges are transferred to the second horizontal CCD register across the first horizontal register, the residual charges in the first horiozntal CCD register are remarkably reduced.
摘要:
A solid state image sensor comprises a CCD type image sensing device and a signal detector. This signal detector comprises an FDA type signal detection circuit connected to a signal pick-up terminal of the image sensing device and having a small amount of saturating signals and low noise, an FDA type signal detection circuit connected to the signal pick-up terminal and having a large amount of saturating signals and high noise, and a signal composing circuit for composing the outputs of both signal detection circuits and outputting a composed output and changing a composing ratio in accordance with the output of the FDA type signal detection circuit.
摘要:
A solid image pickup apparatus comprises a plurality of photo sensing elements, arranged on a semiconductor substrate two-dimensionally and spaced mutually by specified distances, for outputting electric charges on receiving light, a semiconductor channel formed among the photo sensing elements and transferring electric charges output from the photo sensing elements. The semiconductor channel comprises cross-shaped channel members, each channel member being located inside four photo sensing elements. A plurality of vertical transfer electrodes, are provided on the channel members, for giving electric potential to the channel members and having electric charges transferred to the channel members of the next stages. Each of the channel members comprises a wide-width part and a narrow-width part located between the wide-width part and the channel member of the next stage. The narrow-width part is formed by an ion-implanting method to have a higher impurity concentration than that of the wide-width part.
摘要:
Circuitry to reduce signal noise characteristics in an image sensor. In an embodiment, a bit trace line segment is located between neighboring respective segments of a source follower power trace and an additional trace which is to remain at a first voltage level during a pixel cell readout time period. In another embodiment, for each such trace segment, a smallest separation between the trace segment and the respective neighboring other one of such trace segments is substantially equal to or less than some maximum length to provide for parasitic capacitance between the bit line trace and one or more other traces.
摘要:
Techniques and mechanisms for improving full well capacity for pixel structures in an image sensor. In an embodiment, a first pixel structure of the image sensor includes an implant region, where a skew of the implant region corresponds to an implant angle, and a second pixel structure of the image sensor includes a transfer gate. In another embodiment, an offset of the implant region of the first pixel structure from the transfer gate of the second pixel structure corresponds to the implant angle.
摘要:
An image sensor pixel includes a photosensitive region and pixel circuitry. The photosensitive region accumulates an image charge in response to light incident upon the image sensor. The pixel circuitry includes a transfer-storage transistor, a charge-storage area, an output transistor, and a floating diffusion region. The transfer-storage transistor is coupled between the photosensitive region and the charge-storage area. The output transistor has a channel coupled between the charge-storage area and the floating diffusion region and has a gate tied to a fixed voltage potential. The transfer-storage transistor causes the image charge to transfer from the photosensitive region to the charge-storage area and to transfer from the charge-storage area to the floating diffusion region.
摘要:
Techniques and mechanisms to improve potential well characteristics in a pixel cell. In an embodiment, a coupling portion of a pixel cell couples a reset transistor of the pixel cell to a floating diffusion node of the pixel cell, the reset transistor to reset a voltage of the floating diffusion node. In another embodiment, the pixel cell includes a shield line which extends athwart the coupling portion, where the shield line is to reduce a parasitic capacitance of the reset transistor to the floating diffusion node.
摘要:
Techniques and mechanisms to improve potential well characteristics in a pixel cell. In an embodiment, a coupling portion of a pixel cell couples a reset transistor of the pixel cell to a floating diffusion node of the pixel cell, the reset transistor to reset a voltage of the floating diffusion node. In another embodiment, the pixel cell includes a shield line which extends athwart the coupling portion, where the shield line is to reduce a parasitic capacitance of the reset transistor to the floating diffusion node.
摘要:
What is disclosed is an apparatus comprising a transfer gate formed on a substrate and a photodiode formed in the substrate next to the transfer gate. The photodiode comprises a shallow N-type collector formed in the substrate, a deep N-type collector formed in the substrate, wherein a lateral side of the deep N-type collector extends at least under the transfer gate, and a connecting N-type collector formed in the substrate between the deep N-type collector and the shallow N-type collector, wherein the connecting implant connects the deep N-type collector and the shallow N-type collector. Also disclosed is a process comprising forming a deep N-type collector in the substrate, forming a shallow N-type collector formed in the substrate, and forming a connecting N-type collector in the substrate between the deep N-type collector and the shallow N-type collector, wherein the connecting implant connects the deep N-type collector and the shallow N-type collector. A transfer gate is formed on the substrate next to the deep photodiode, wherein a lateral side of the deep N-type collector extends at least under the transfer gate. Other embodiments are disclosed and claimed.
摘要:
An apparatus for measuring the power frequency of a light source includes a photo-sensitive transistor, a modulators and a logic unit. The photo-sensitive transistor generates an electrical signal that is responsive to light incident thereon from the light source. The modulator generates a modulated signal based on the electrical signal that toggles at a rate substantially proportional to the power frequency of the light source. The logic unit is coupled to receive the modulated signal and determine its toggling frequency.