CN209859125U - Capacitive sensor applied to aircraft touch screen - Google Patents
Capacitive sensor applied to aircraft touch screen Download PDFInfo
- Publication number
- CN209859125U CN209859125U CN201921012646.6U CN201921012646U CN209859125U CN 209859125 U CN209859125 U CN 209859125U CN 201921012646 U CN201921012646 U CN 201921012646U CN 209859125 U CN209859125 U CN 209859125U
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- Prior art keywords
- pcb
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- touch screen
- mounting plate
- layer
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- 239000004065 semiconductor Substances 0.000 claims abstract description 18
- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 15
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims 3
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 206010070834 Sensitisation Diseases 0.000 abstract description 8
- 230000008313 sensitization Effects 0.000 abstract description 8
- 238000005538 encapsulation Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 1
- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Landscapes
- Light Receiving Elements (AREA)
Abstract
The utility model belongs to the technical field of the sensor technique and specifically relates to a be applied to capacitance sensor of aircraft touch screen and specifically relates to a be applied to, including the sensor encapsulation, the inside of sensor encapsulation is equipped with the mounting panel, one side of mounting panel is equipped with the PCB circuit board, photosensitive assembly before PCB circuit board one side is equipped with, one side of PCB circuit board is equipped with reference electric capacity group, one side of mounting panel is equipped with the rear substrate, one side of rear substrate is equipped with semiconductor element layer, polarisation layer, filter glass in proper order, one side on semiconductor element layer is equipped with copper-plated conductive hole, the polarisation layer with be equipped with the diffraction grating piece between filter glass one side, the both sides of sensor encapsulation all are equipped with the light trap, through the utility model discloses an improvement, the scope of effectual expansion sensitization prevents the signal distortion, and novel structure is practical.
Description
Technical Field
The utility model relates to a sensor technical field especially relates to a be applied to capacitive sensor of airborne vehicle touch screen.
Background
Photosensitive sensors, as a precision sensor, are of various forms, mainly including: phototube, fiber optic photosensor, CCD and CMOS image sensor, etc. It is known that many touch screens for controlling devices are provided on some civil aircrafts, such as passenger aircraft, and these touch screens with higher intelligence degree generally contain a large number of photosensitive sensors, part for camera shooting and part for internal pixel acquisition. At present, most of photosensitive sensors used in touch screens for aircrafts adopt single-sided light sensing, the light sensing range of the sensors is limited, pixel or image signal distortion is easy to occur in a limit environment, high-definition display of the touch screens is influenced, and therefore a touch screen sensor which is small in size and capable of carrying out double-sided light sensing is urgently needed in the field of aircrafts. To this end, patent application No. CN201611045264.4 provides a solution, and its main principle is to set up a mounting groove in the non-photosensitive area of the sensor, and set up the substrate, the semiconductor element and the filter glass sheet in the groove, so as to not increase the volume of the whole package, and simultaneously enable the back to be photosensitive, and then connect the semiconductor element to the reference capacitor on the PCB through the conductive hole, so as to implement the photosensitive detection, and to some extent, solve some problems. However, because the photosensitive area at the back is arranged in the mounting groove, the photosensitive ranges at two sides are limited, and if direct light enters the filter glass sheet, certain reflection interference phenomenon can occur, so that light absorption is hindered, and the sensitivity of the sensor is influenced. Therefore, the utility model provides a be applied to the capacitive sensor of aircraft touch screen and solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the limited shortcoming of sensitization scope that exists among the prior art, and the capacitive sensor who is applied to aircraft touch screen who proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a capacitive sensor applied to an aircraft touch screen is designed, and comprises a sensor package, wherein a mounting plate is arranged inside the sensor package, a PCB (printed circuit board) is fixedly arranged on one side of the mounting plate, a front photosensitive assembly is arranged on one side, far away from the mounting plate, of the PCB through a lead in a connecting manner, a reference capacitor bank is arranged on one side, opposite to the front photosensitive assembly, of the PCB, a rear substrate is fixedly arranged on one side, far away from the PCB, of the mounting plate, a semiconductor element layer, a polarizing layer and filter glass are fixedly arranged on one side, far away from the mounting plate, of the rear substrate in a bonding manner, a plurality of copper-plated conductive holes are formed between one sides, opposite to the reference capacitor bank, of the polarizing layer and the filter glass, a plurality of diffraction grating sheets are arranged between one sides, opposite to the polarizing layer and the, and the bottom of the light hole on the same side is provided with an optical filter for preventing color drift.
PCB circuit board with one side that the mounting panel is relative is equipped with four two double-phase right fillets, PCB circuit board with be equipped with the insulating protection filling layer between one side that the mounting panel is relative, the polarisation layer is formed by a plurality of layers of polaroid coincide, and the polaroid adopts two-layer TAC film and middle part interbedded PVA polyvinyl alcohol membrane to constitute.
Filter glass with it is equipped with sensitization epoxy and transparent filler to fill between one side that the polarisation layer is relative, a plurality of diffraction grating piece is the equidistance and equally divides the range, and a plurality of light trap is the equidistance and equally divides the range, a plurality of the both ends of copper facing electrically conductive hole all are equipped with electrically conductive tin ball.
The semiconductor element layer is provided with a plurality of semiconductor spacing parts, both sides of the PCB are provided with conductive patterns, and the outer sides of the capacitors in the reference capacitor group are provided with insulating protection materials in a wrapping mode.
The utility model provides a be applied to capacitive sensor of airborne vehicle touch screen, beneficial effect lies in: through the arrangement and the matching of the sensor package and the mounting plate in the sensor, the interior of the package is divided into two mounting cavities, the front side is provided with the PCB and the front photosensitive assembly, and the rear side is provided with the rear photosensitive and conductive device, so that the whole mounting space is not occupied, and the size of the sensor is hardly changed; filter glass through the rear side, diffraction grating piece and polarisation layer carry out effectual absorption to the light of direct range, the side has set up the light trap simultaneously, the light accessible bar filter of lateral part gets into in the photosensitive resin filling layer, and then under the effect of diffraction grating piece, get into the polarisation layer, the light of lateral part also can be absorbed like this, whole sensitization scope has been enlarged, the polarisation layer can filter out the light that surpasss the detection range wavelength, make holistic light inlet quantity stable in certain extent, then pass through semiconductor element with photoelectric signal, reference electric capacity is passed to the electrically conductive hole, mode transmission signal such as through contrast amplification, overall structure is novel and practical, and is suitable for promoting.
Drawings
Fig. 1 is a schematic structural diagram of a capacitive sensor applied to an aircraft touch screen according to the present invention;
fig. 2 is a schematic diagram of an explosion structure of a capacitive sensor applied to an aircraft touch screen according to the present invention;
fig. 3 is a schematic sectional structure diagram of a capacitive sensor applied to an aircraft touch screen according to the present invention.
In the figure: the sensor comprises a sensor package 1, a mounting board 2, a PCB 3, a front photosensitive assembly 4, a reference capacitor bank 5, a rear substrate 6, a semiconductor element layer 7, a polarizing layer 8, a diffraction grating sheet 9, filter glass 10, a light hole 11, an optical filter 12, a copper-plated conductive hole 13 and a solder foot 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a capacitive sensor applied to an aircraft touch screen includes a sensor package 1, a mounting plate 2 is fixedly welded inside the sensor package 1, a PCB 3 is fixedly disposed on one side of the mounting plate 2, a front photosensitive assembly 4 is connected to one side of the PCB 3 away from the mounting plate 2 through a wire, so as to effectively implement visual sensitization in a front space range, a reference capacitor bank 5 is disposed on one side of the PCB 3 opposite to the front photosensitive assembly 4, a silica insulation material is coated outside the reference capacitor bank 5, a rear substrate 6 is fixedly disposed on one side of the mounting plate 2 away from the PCB 3, a semiconductor element layer 7, a polarization layer 8 and a filter glass 10 are sequentially and fixedly disposed on one side of the rear substrate 6 away from the mounting plate 2, and transparent photosensitive resin adhesives are used at bonding positions, the cooperation of three can realize the visual sensitization to the vertical range in the cavity of rear portion, semiconductor component layer 7 with be equipped with a plurality of copper facing electrically conductive hole 13 between the relative one side of reference electric capacity group 5, polarisation layer 8 with be equipped with a plurality of diffraction grating piece 9 between the relative one side of filter glass 10, the both sides of sensor package 1 all are equipped with a plurality of light trap 11, with one side the bottom of light trap 11 is equipped with a light filter 12 that prevents the colour and wafts jointly, further gathers the light signal of cavity both sides, enlarges the sensitization scope.
The utility model discloses in, PCB circuit board 3 with one side that mounting panel 2 is relative is equipped with four two double-phase right fillets 14, PCB circuit board 3 with be equipped with the insulation protection filling layer between one side that mounting panel 2 is relative, polarisation layer 8 is formed by a plurality of layers of polaroid coincide, and the polaroid adopts two-layer TAC membrane and middle part interbedded PVA polyvinyl alcohol membrane to constitute, can absorb the light of specific wavelength, filters the light source, realizes the clear collection of image signal.
Filter glass 10 with it is equipped with sensitization epoxy and transparent stopping to fill between 8 relative one sides in polarisation layer, a plurality of diffraction grating piece 9 is the equidistance and equally divides the range, and a plurality of light trap 11 is the equidistance and equally divides the range, a plurality of copper facing electrically conductive hole 13's both ends all are equipped with electrically conductive tin ball, realize photoelectric signal's collection and transmission.
The semiconductor element layer 7 is provided with a plurality of semiconductor spacers, the two sides of the PCB 3 are provided with conductive patterns, the outer sides of the capacitors in the reference capacitor group 5 are provided with insulating protective materials through cladding, and the PCB reference capacitor group is simple in overall structure, high in practicability and suitable for popularization.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The capacitive sensor applied to the aircraft touch screen comprises a sensor package (1) and is characterized in that a mounting plate (2) is arranged inside the sensor package (1), a PCB (printed circuit board) (3) is fixedly arranged on one side of the mounting plate (2), a front photosensitive assembly (4) is arranged on one side, far away from the mounting plate (2), of the PCB (3) through wire connection, a reference capacitor set (5) is arranged on one side, opposite to the front photosensitive assembly (4), of the PCB (3), a rear substrate (6) is fixedly arranged on one side, far away from the PCB (3), of the rear substrate (6), a semiconductor element layer (7), a polarizing layer (8) and filter glass (10) are sequentially and fixedly arranged on one side, far away from the mounting plate (2), of the semiconductor element layer (7) and one side, opposite to the reference capacitor set (5), a plurality of copper-plated conductive holes (13) are formed between the semiconductor element layer (7) and one side, opposite, the sensor packaging structure is characterized in that a plurality of diffraction grating sheets (9) are arranged between the polarizing layer (8) and one side, opposite to the filter glass (10), of the sensor packaging structure (1), a plurality of light holes (11) are formed in the two sides of the sensor packaging structure, and the light holes (11) are arranged on the same side, and the bottom of each light hole (11) is jointly provided with a light filter (12) for preventing color drift.
2. The capacitive sensor applied to the aircraft touch screen is characterized in that four pairwise opposite welding feet (14) are arranged on one side, opposite to the mounting plate (2), of the PCB (3), an insulating protective filling layer is arranged between one side, opposite to the mounting plate (2), of the PCB (3), and the polarizing layer (8) is formed by overlapping a plurality of layers of polarizing plates which are formed by two TAC films and a PVA polyvinyl alcohol film sandwiched in the middle.
3. The capacitive sensor applied to the aircraft touch screen according to claim 1, wherein a photosensitive epoxy resin and a transparent filler are filled between the sides of the filter glass (10) opposite to the polarizing layer (8), a plurality of the diffraction grating plates (9) are arranged equidistantly and equally, a plurality of the light holes (11) are arranged equidistantly and equally, and conductive solder balls are arranged at two ends of a plurality of the copper-plated conductive holes (13).
4. The capacitive sensor applied to the aircraft touch screen is characterized in that the semiconductor element layer (7) is provided with a plurality of semiconductor spacers, both sides of the PCB (3) are provided with conductive patterns, and the outside of the capacitors in the reference capacitor group (5) are provided with insulating protective materials through cladding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012646.6U CN209859125U (en) | 2019-07-02 | 2019-07-02 | Capacitive sensor applied to aircraft touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921012646.6U CN209859125U (en) | 2019-07-02 | 2019-07-02 | Capacitive sensor applied to aircraft touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209859125U true CN209859125U (en) | 2019-12-27 |
Family
ID=68942860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921012646.6U Expired - Fee Related CN209859125U (en) | 2019-07-02 | 2019-07-02 | Capacitive sensor applied to aircraft touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209859125U (en) |
-
2019
- 2019-07-02 CN CN201921012646.6U patent/CN209859125U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |