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Sensor devices and electronic equipment

A technology of electronic equipment and sensors, applied in TV, instruments, alarms, etc., can solve problems such as the inability to achieve high speed

Active Publication Date: 2018-03-13
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to irradiate / block infrared rays multiple times within one scan period, and as a result, there is a problem that speed-up cannot be achieved.

Method used

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  • Sensor devices and electronic equipment
  • Sensor devices and electronic equipment
  • Sensor devices and electronic equipment

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Experimental program
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Embodiment Construction

[0065] Next, preferred embodiments of the present invention will be described in detail. In addition, the present embodiment described below does not unduly limit the content of the present invention described in the claims, and not all the configurations described in the present embodiment are essential to the solutions of the present invention.

[0066] 1. Sensor device

[0067] exist figure 1 A sensor device 100 according to one embodiment of the present invention is shown in (A) and (B). This sensor device 100 includes a sensor array 101 , a row selection circuit (row driver) 110 , a readout circuit 120 and a reset drive circuit 130 . In addition, an A / D conversion unit 140 and a control circuit 150 may also be included. By using this sensor device 100 , for example, an infrared camera, a terahertz camera, and the like can be realized.

[0068] In the sensor array 101 (focal plane array), a plurality of row lines (word lines, scanning lines) WL, a plurality of column l...

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PUM

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Abstract

The present invention provides a sensor device and an electronic device that do not include an amplifier circuit in each pixel and that can perform an operation of reading outputs of a plurality of pixels with high sensitivity during continuous irradiation of light. The sensor device (100) has: a plurality of row lines (WL); a plurality of column lines (DL); a plurality of reset lines (RL); and each of the plurality of row lines, the plurality of column lines and the plurality of reset lines a plurality of pixel circuits (1) connected by roots; and an amplification circuit (122). A plurality of pixel circuits (1) respectively include: a thermoelectric element (2); a reset switch (5), which is driven by a reset line to discharge the charge of the thermoelectric element; and a pixel selection switch (4), which is driven by a row line to The column lines output signals based on changes in charge of the thermoelectric elements due to discharge. A signal based on a change in charge of the pyroelectric element due to discharge is amplified by an amplifier circuit (122).

Description

technical field [0001] The present invention relates to sensor devices having pyroelectric elements, electronic equipment, and the like. Background technique [0002] Conventionally, an infrared detection circuit using a pyroelectric element or the like is known. For example, infrared rays with a wavelength in the vicinity of 10 μm are radiated from the human body, and by detecting the infrared rays, information on the existence and temperature of the human body can be obtained in a non-contact manner. Therefore, intrusion detection and physical quantity measurement can be realized by using such an infrared detection circuit. [0003] As the prior art of an infrared detection circuit, for example, the technology disclosed in Non-Patent Document 1 and Patent Document 1 is known. In the prior art of Non-Patent Document 1, a source follower circuit composed of a transistor (JFET) and a resistor connected in series is used to detect the thermoelectric current of the thermoelec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/378
CPCG01J1/44G01J5/0896G08B13/191G01J2005/345G01J5/0025G01J5/0806G01J5/34H04N23/56H04N23/20H04N25/78H04N5/33H04N25/75
Inventor 山村光宏
Owner SEIKO EPSON CORP