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Solid-state image capturing device and electronic instrument

A technology of solid-state imaging devices and voltage lines, which is applied to signal generators with a single pick-up device, TVs, color TVs, etc., can solve problems such as increased power consumption and increased circuit scale, and achieve suppression of power consumption increases and suppression The effect of increasing the area

Pending Publication Date: 2021-03-26
SONY SEMICON SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to change the slope of the reference signal of each column ADC in the single-slope integrating type column ADC, it is necessary to generate a plurality of reference signals having different slopes, which leads to an increase in the scale of a circuit for generating the reference signal and an increase in power consumption. The problem

Method used

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  • Solid-state image capturing device and electronic instrument
  • Solid-state image capturing device and electronic instrument
  • Solid-state image capturing device and electronic instrument

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] 1.1 Construction of column ADC

[0037] 1.2 Operation overview of column ADC

[0038] 1.3 Example of configuration for performing switching of analog gain

[0039] 1.4 Specific examples of analog gain switching

[0040] 1.4.1 First example

[0041] 1.4.2 Second example

[0042] 1.5 Function / Effect

[0043] 2. The second embodiment

[0044] 2.1 Example of configuration for performing switching of analog gain

[0045] 2.2 Specific examples of analog gain switching

[0046] 2.3 Grouping

no. 3 example

[0048] 3.1 Example of configuration for performing switching of analog gain

[0049] 3.2 Specific examples of analog gain switching

no. 4 example

[0051] 4.1 Variations

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Abstract

The objective of the present invention is to vary an analog gain for each column while suppressing an increase in surface area and an increase in power consumption. A solid-state image capturing device (1, 1A) according to an embodiment of the present invention is provided with: converters (10A to 10D) connected to vertical signal lines (VSL) extending from a pixel array portion (30); a voltage generator (20) which is connected to a plurality of voltage lines and which outputs reference voltages having different reference voltages to each of the plurality of voltage lines; lines (L10 to L31, L20 to L23) connecting the converters and the plurality of voltage lines; and switches (SW0 to SW3) which are provided in the lines, and which switch the voltage line to which each converter is connected to any one of the plurality of voltage lines.

Description

technical field [0001] The present invention relates to a solid-state imaging device and electronic equipment. Background technique [0002] In recent years, complementary metal-oxide-semiconductor (CMOS: Complementary Metal-oxide Semiconductor) type solid-state imaging devices (hereinafter also referred to as CMOS image sensors or CMOS-type solid-state imaging devices) have been used as an alternative to charge-coupled device (CCD: Charge Coupled Device) type solid-state imaging devices. Image sensors of devices have received attention. [0003] There are two types of analog-to-digital converters (Analog to Digital Converter, hereinafter referred to as ADC) used in CMOS type solid-state imaging devices: pipeline type ADC and column type ADC. In addition, column type ADCs (hereinafter referred to as column ADCs) include: a single-slope integral type ADC using a ramp-like reference signal; and a successive approximation register (Successive Approximation Register, hereinafte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/378H03M1/18H03M1/46H04N5/374H04N9/07H04N23/12
CPCH03M1/18H03M1/46H04N25/134H04N25/78H04N25/77H04N25/772H04N25/709H04N25/766
Inventor 池田裕介
Owner SONY SEMICON SOLUTIONS CORP
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