Thermal compensation pyroelectric infrared unit detector based on FPC flexible substrate
A technology of pyroelectric infrared and unit detectors, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of no application reports for sensors, and achieve the effects of low comprehensive cost, high heat resistance, and simplified structure
Inactive Publication Date: 2015-10-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[0004] In addition, because the flexible board (FPC) is thin, light, and soft compared with the rigid PCB, and with the development of electronic equipment in the direction of light weight, miniaturization, thinning, multi-function, high performance, and wearable Development, flexible board (FPC) is widely used in various electronic devices such as portable phones, smart phones, digital audio players, digital TVs, digital cameras, etc., but there is no application report on sensors
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[0028] The technical solutions of the present invention will be further described in detail below through specific embodiments.
[0029] In this embodiment, the thermally compensated pyroelectric infrared unit detector based on the FPC flexible substrate has the following structure: figure 2As shown, it includes: a device housing 1, a window 2 arranged on the housing, an infrared filter 3 embedded on the window, a device base 4, pins arranged through the base and pads 5 for connecting the pins, A single-layer FPC flexible circuit board 7 on the base, the surface of the circuit board is integrated with a packaged field effect transistor and a dual-element sensitive element, and each sensitive element in the dual-element sensitive element is sequentially arranged in the circuit from bottom to top. The lower electrode 6, the composite material layer 8 and the upper electrode on the board constitute 9, and the upper electrode of the dual-element sensitive element is connected; on...
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The invention belongs to the electronic material and component technology field, and provides a full-integration thermal compensation pyroelectric infrared detector based on an FPC flexible substrate. The detector comprises a device housing, a device pedestal and a circuit board arranged on the pedestal. The circuit board is an FPC flexible circuit board. A field effect transistor and a dual sensitive element are integrated on the upper surface of the circuit board. Each sensitive element in the dual sensitive element is composed of a lower electrode, a composite material layer and an upper electrode arranged on the circuit board from bottom to top in order, and the upper electrodes on the dual sensitive element are connected. One sensitive element in the dual sensitive element comprises an infrared absorption layer arranged on the upper electrode and forms a pyroelectric infrared sensitive element, and the lower electrode is connected with a grid electrode of the field effect transistor. The other sensitive element in the dual sensitive element forms a pyroelectric compensation sensitive element, and the lower electrode is employed as a grounding end of the detector. The detector has advantages of excellent performances, simple manufacturing, low production cost and high production efficiency.
Description
technical field [0001] The invention belongs to the technical field of electronic materials and components, in particular to a fully integrated thermal compensation type pyroelectric infrared detector based on an FPC flexible substrate. Background technique [0002] Pyroelectric infrared detector is an important kind of infrared detector. It has the characteristics of fast response speed, high detection rate, no refrigeration, simple production process and convenient use. It is widely used in industrial, agricultural, military, environmental and medical fields. Broad application prospects. In the infrared detection technology, the substrate, sensitive material, insulating structure, and readout circuit are the core, and their characteristics determine the performance and application fields of the supporting instruments. Pyroelectric materials commonly used in infrared detectors are BaSrTiO 3 (BST), PbSrTiO 3 (PST) and PbZrTiO 3 (PZT) and other ceramic materials, they hav...
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IPC IPC(8): H01L31/09H01L31/0203H01L31/024H01L31/02
CPCH01L31/09H01L31/02H01L31/0203H01L31/024
Inventor 吴传贵吴勤勤罗文博帅垚李攀孙翔宇潘忻强白晓圆张万里
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA