Gas sensor having micro-package structure and method for making the same
a gas sensor and micro-package technology, applied in the field of sensors, can solve the problems of unrecognizable human olfaction or other human sensory functions, gas may be dangerous, people can be poisoned to faint or even die, and achieve the effect of less packaging costs
Active Publication Date: 2015-07-02
LINGSEN PRECISION INDS
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- Abstract
- Description
- Claims
- Application Information
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Benefits of technology
The present invention provides a gas sensor that is small and compact with a micro-package structure, which reduces packaging costs and makes it more practical than previous designs. The manufacturing process is also simplified to make the gas sensor even more practical.
Problems solved by technology
In the air, most gases are colorless and odorless, and thus undetectable by human olfaction or other human sensory functions.
However, some of the gases may be dangerous when presenting in the air we breathe.
Carbon monoxide, for example, when inhaled excessively by people, the people can be poisoned to faint or even die.
However, the gas-sensing element 3 is structurally complex and requires high manufacturing costs, so the price of the entire gas-detecting module 1 is consequently expansive.
In addition, since a gas-sensing structure of this type is typically made as a voluminous modularized device, its use is subject to spatial abundance.
Method used
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[0026]The following preferred embodiments when read with the accompanying drawings are made to clearly exhibit the above-mentioned and other technical contents, features and effects of the present invention.
[0027]Referring to FIG. 3 through FIG. 4, in a preferred embodiment of the present invention, a gas sensor 10 comprises a substrate 20, a light-emitting unit 30, a light-receiving unit 40, a signal-processing unit 50 and a package body 60.
[0028]The substrate 20 has a light-emitting area 21, a light-receiving area 23, and a signal-processing area 25.
[0029]The light-emitting unit 30 is deposited in the light-emitting area 21 and provides an optical signal 31. The optical signal 31 of the light-emitting unit 30 may be a visible light or an infrared ray, with a wavelength between 380 nm and 10000 nm. In the present embodiment, the optical signal 31 is an infrared ray
[0030]The light-receiving unit 40 is deposited in the light-receiving area 23 and receives the optical signal 31 from t...
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Abstract
A gas sensor having a micro-package structure includes a light-emitting unit, a light-receiving unit, and a signal-processing unit all deposited on a substrate, and a package body fixed to the substrate and having a chamber and a through hole. The chamber accommodates all the units and the through hole is over the substrate. Gas enters the chamber through the through hole. The light-emitting unit emits an optical signal that passes through the gas and then is received by the light-receiving unit. Then a signal-processing unit electrically connected to the light-receiving unit performs spectral analysis. Thereby, the gas sensor is advantageous for requiring low packaging costs and being compact.
Description
BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The present invention relates to sensors, and more particularly to a gas sensor having a micro-package structure and a method for making the gas sensor.[0003]2. Description of Related Art[0004]A gas sensor works by using applicable electric signals to convert a certain gas in the air into figures for convenient monitoring and calculation. In the air, most gases are colorless and odorless, and thus undetectable by human olfaction or other human sensory functions. However, some of the gases may be dangerous when presenting in the air we breathe. Carbon monoxide, for example, when inhaled excessively by people, the people can be poisoned to faint or even die. This can be prevented and human safety can be ensured by using a gas sensor and taking appropriate ventilating measures. In another instance where the levels of carbon dioxide and oxygen in the air are to be controlled for people's good life quality, a gas sensor may be atta...
Claims
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IPC IPC(8): G01N21/61H01L23/00C09J5/00G01N33/00
CPCG01N21/61G01N33/0027G01N2201/061C09J5/00H01L24/85H01L24/32H01L24/48H01L24/73H01L2224/32225H01L2224/48091H01L2224/48227H01L2224/73265H01L2924/16151H01L2924/181G01N21/3504G01N2021/3155H01L2224/45169H01L2924/00014H01L24/45Y10T156/10Y10T29/49128H01L2924/00012H01L2224/45015H01L2924/207
Inventor LIN, TZU-CHIHLIAO, CHIEN-KO
Owner LINGSEN PRECISION INDS