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Comparator, solid-state imaging device, electronic apparatus, and driving method

A comparator and pixel technology, applied in the field of comparators, can solve problems such as difficulty in increasing the processing speed of AD conversion, and achieve the effect of increasing the speed.

Active Publication Date: 2014-10-01
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the configuration of the solid-state imaging device of Japanese Unexamined Patent Application Publication No. 2011-229120, inside the AD conversion circuit, two auto-zero operations need to be performed, so it is difficult to increase the speed of AD conversion processing

Method used

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  • Comparator, solid-state imaging device, electronic apparatus, and driving method
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  • Comparator, solid-state imaging device, electronic apparatus, and driving method

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Embodiment Construction

[0033] Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the accompanying drawings.

[0034] figure 1 is a block diagram illustrating a configuration example of a solid-state imaging device employing the present invention according to an embodiment.

[0035] Such as figure 1 As shown, the solid-state imaging device 11 is a CMOS image sensor, and is configured to include a pixel array unit 12 , a timing control unit 13 , a reference signal generation circuit 14 , a row scanning unit 15 , a column scanning unit 16 and a column processing unit 17 .

[0036] In the pixel array unit 12, a plurality of pixels 21 are arranged. exist figure 1In the example of m row x n column pixel 21 11 ~21 mn Arranged in a matrix shape, the pixels 21 in each row pass through m horizontal signal lines 22 1 ~22 m Connected to the row scanning unit 15, and via n vertical signal lines 23 1 ~23 n It is connected with the col...

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Abstract

A comparator includes: a first amplifying unit that includes a differential pair configured with a pair of transistors which are first and second transistors, and amplifies a difference of signals input to each of the gate electrodes of the first and second transistors, to output; a second amplifying unit that amplifies the signal output from the first amplifying unit; a third transistor that connects the first transistor to a power source voltage; a fourth transistor that connects the second transistor to the power source voltage; a fifth transistor that connects a connection point of gate electrodes of the third transistor and the fourth transistor to a drain of the third transistor; and a sixth transistor that connects a connection point of gate electrodes of the third transistor and the fourth transistor to a drain of the fourth transistor.

Description

technical field [0001] The present invention relates to a comparator, a solid-state imaging device, an electronic device and a driving method, and in particular to a comparator, a solid-state imaging device, an electronic device and a driving method capable of increasing the speed of AD conversion processing. Background technique [0002] In the related art, in electronic equipment including an imaging function such as a digital still camera and a digital video camera, for example, a solid-state imaging device such as a complementary metal oxide semiconductor (CMOS) image sensor or a charge-coupled device (CCD) is employed. A solid-state imaging device includes a pixel in which a photodiode performing photoelectric conversion and a plurality of transistors are combined, and an image is created based on pixel signals output from a plurality of pixels arranged on one plane. [0003] For example, in the solid-state imaging device, charges accumulated in a photodiode are transfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/3745H04N5/341H04N5/378H04N25/65
CPCH03K5/2481H04N5/369H04N25/78H04N25/75
Inventor 田中秀树松本静德永野川晴久加地悠一
Owner SONY CORP