CN106876204A - A kind of preparation method of mining instrument thin-film key switch and its screen layer - Google Patents
A kind of preparation method of mining instrument thin-film key switch and its screen layer Download PDFInfo
- Publication number
- CN106876204A CN106876204A CN201710247612.4A CN201710247612A CN106876204A CN 106876204 A CN106876204 A CN 106876204A CN 201710247612 A CN201710247612 A CN 201710247612A CN 106876204 A CN106876204 A CN 106876204A
- Authority
- CN
- China
- Prior art keywords
- layer
- screen
- thin
- screen layer
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/86—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the casing, e.g. sealed casings or casings reducible in size
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0224—Patterned shielding planes, ground planes or power planes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/07—Electric details
- H05K2201/0707—Shielding
- H05K2201/0715—Shielding provided by an outer layer of PCB
Abstract
The invention discloses a kind of mining instrument thin-film key switch and its preparation method of screen layer, thin-film key panel of the film key switch by printed circuit board (PCB) and covering on a printed circuit is constituted；Printed circuit board (PCB) is followed successively by ground plane, bus plane and some signals layers from the bottom to top；TVS power supply protectors are connected between ground plane and bus plane；Thin-film key panel is from top to bottom followed successively by：First protective layer, pet substrate, patterned layer, screen layer, the second protective layer, conductive adhesive layer and button bed course；The ground plane of the printed circuit board (PCB) is connected with the screen layer of thin-film key panel.The present invention is protected and protects button thin film switch in itself using between bus plane and ground plane and connecing TVS power protection devices and reducing the electromagnetic interference of moment generation.
Description
Technical field
The present invention relates to a kind of mining instrument thin-film key switch and its preparation method of screen layer.
Background technology
As intelligent electronic product is constantly used into colliery, switched as the electronics of guidance panel using film key
Product category is also increasing.During for conventional films key switch as guidance panel, because film key switch is big in the presence of two
Defect, one leaves substantial amounts of space in itself, and the shielding of this electron product brings very big problem, secondly the line of switch sections
Road and component are easily disturbed by radio frequency and electrostatic, cause the misoperation of button operation.If such film opened in addition
Pass uses in being applied to mine, and anti-electromagnetic shielding jamming countermeasure is a problem.
For mining electric product, its explosion-proof security is most important.The security type of current mine anti-explosion electric product
Mainly based on flame-proof type and essential safe type.Substantial safety-design seeks to the electric spark for strictly controlling circuit portions to produce
Energy, therefore electromagnetic shielding interference problem has been fully taken into account in the design.
The content of the invention
First purpose of the invention is to provide a kind of mining instrument thin-film key switch.
The technical scheme for realizing first purpose of the invention is a kind of mining instrument thin-film key switch, by printed circuit board (PCB)
Constituted with covering thin-film key panel on a printed circuit；The printed circuit board (PCB) is followed successively by ground plane, electricity from the bottom to top
Active layer and some signals layers；TVS power supply protectors are connected between the ground plane and bus plane；
The thin-film key panel is from top to bottom followed successively by：First protective layer, pet substrate, patterned layer, screen layer, second
Protective layer, conductive adhesive layer and button bed course；Set on the pet substrate, patterned layer, screen layer, the second protective layer and conductive adhesive layer
At least one technique via is put, screen layer and conductive adhesive layer are connected；
The ground plane of the printed circuit board (PCB) is connected with the screen layer of thin-film key panel.
First protective layer and the second protective layer are UV ink；The screen layer is conductive paste.
Each layer of the conductive adhesive layer area more than portion disposed thereon.
Second object of the present invention is to provide a kind of shielding layer manufacturing method thereof of thin-film key panel.
The technical scheme for realizing second purpose of the invention is a kind of shielding layer manufacturing method thereof of thin-film key panel, including
Following steps：
Step one：Prepare PET base material, and the printing pattern layer in PET base material；
Step 3：Screen layer is made in patterned layer；
A, the technique via for cutting out on laser cutting machine the connection positive and negative conductive materials of PET base material, send after the completion of cutting
To screen process press；
B, the half tone equipped with shielding layer pattern is changed on screen process press, the spacing of half tone and printing machine platform for 4~
5mm；
C, scraper from shore hardness be 70 degree of perpendicular type frictioning, and on screen process press doctor blade holder with half tone into
75 degree of angles；With conductive paste on the left of half tone, the returning blade tool on operation screen process press is uniformly bulldozed silver paste on half tone, comes
Return once；
D, half tone take the PET material that step b is obtained after rising, and colored ink is faced up and is placed in silk-screen printing machine table top,
PET material is held using the wind inlet on table top, and is removed the dust of material surface with dedusting roller clean；
E, operation screen process press put down half tone, move scraper, and conductive silver paste passes through the area of the pattern on half tone, in pattern
The colored ink face of layer leaves screen layer；
F, stopping air draught, 98 DEG C of ± 2 DEG C of hot drying tunnels are moved on to from printing table by the PET sheet material with patterned layer and screen layer
Conveyer belt on, be placed on net car by after 3.5min preliminary drying dry-cure, being re-fed into oven heat carries out heat cure treatment, temperature
130 DEG C ± 3 DEG C, baking time be 30min.
The specific method of the step one is：Printing color ink obtains patterned layer in the thick PET base materials of 0.35mm, passes through
100 DEG C of ± 2 DEG C of hot drying tunnel 2.5min preliminary drying dry-cure are crossed, is positioned over standby on net car.
The circular hole of a diameter of 0.12mm of technique via, the pattern of screen layer is line width 1.0mm, line sky compares 1：3.2 square
Shape grid.
In the step 2, for shielding during more than 50MHZ signals, using solid content 59%, density 1.84kg/L, viscosity
4600~7400,100~200g of weight silver pastes；For shielding during more than 1000KHZ signals, using solid content 45%, density
1.3kg/L, viscosity 4600~7400, the silver-bearing copper conductive paste of 100~150g of weight；During for magnetic screen, using solid content 48%,
Density 1.4kg/L, viscosity 4600~7400, the nickel conductive paste of 100~180g of weight.
After employing above-mentioned technical proposal, present invention offers following beneficial effect：(1) present invention is using in bus plane
Between ground plane and connect TVS power protections device come reduce moment generation electromagnetic interference, protect protection button film open
Pass is in itself.
(2) with conductive adhesive layer be connected screen layer by being arranged on multiple technique vias of button frame surrounding by the present invention, then
It is connected with metal chassis by conductive adhesive layer so that and equipment monolithic case forms a tight shielding cavity so that in chamber
Component is subject to Global Macros, can guarantee that component steady production under the conditions of no radio frequency and electrostatic interference.
(3) present invention sets one layer of button bed course between printed circuit board (PCB) and thin-film key panel, can isolate conduction
Copper Foil signals layer on glue-line and circuit board.
(4) technique of the invention can guarantee that effectiveness, with high conductivity and electromagnetic shielding efficiency high, by control
The species of wire printing material processed, thickness, linear and shape reach the shield effectiveness to different wave frequencies.
(5) technique of the invention significantly reduces the manufacturing cost of film key switch, is suitable to produce in enormous quantities.Can be big
Amount is applied to the EMI shieldings of colliery measuring apparatus operation key panel.
Brief description of the drawings
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail, wherein
Fig. 1 is the front view of film key switch of the invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is circuit diagram of the invention.
In accompanying drawing marked as：
Printed circuit board (PCB) 1, ground plane 11, bus plane 12, signals layer 13, thin-film key panel 2, the first protective layer 21, PET
Substrate 22, patterned layer 23, screen layer 24, the second protective layer 25, conductive adhesive layer 26, button bed course 27, technique via 28.
Specific embodiment
(embodiment 1)
See Fig. 1 and Fig. 2, a kind of mining instrument thin-film key switch of the present embodiment by printed circuit board (PCB) 1 and is covered in print
Thin-film key panel 2 on printed circuit board 1 is constituted；If printed circuit board (PCB) 1 be followed successively by from the bottom to top ground plane 11, bus plane 12 and
Dry signals layer 13；Thin-film key panel 2 is from top to bottom followed successively by：First protective layer 21, pet substrate 22, patterned layer 23, screen layer
24th, the second protective layer 25, conductive adhesive layer 26 and button bed course 27；Pet substrate 22, patterned layer 23, screen layer 24, the second protective layer
25 and conductive adhesive layer 26 at least one technique via 28 is set, screen layer 24 and conductive adhesive layer 26 are connected；Printed circuit board (PCB) 1
Ground plane 11 be connected with the screen layer 25 of thin-film key panel 2.First protective layer 21 and the second protective layer 25 are UV ink；Screen
Layer 25 is covered for conductive paste.The area of conductive adhesive layer 26 more than portion disposed thereon each layer, for chassis contact.
The preparation method of mining instrument thin-film button screen layer, comprises the following steps：
Step one：Prepare PET base material 22, and the printing pattern layer 23 in PET base material 22；In the thick PET base materials of 0.35mm
Printing color ink obtains patterned layer 24 on 23, by 100 DEG C of ± 2 DEG C of hot drying tunnel 2.5min preliminary drying dry-cure, is positioned over net car
It is upper standby
Step 3：Screen layer 24 is made in patterned layer 23；
A, the technique via 28 for cutting out on laser cutting machine the connection positive and negative conductive materials of PET base material, after the completion of cutting
Deliver to screen process press；
B, the half tone equipped with shielding layer pattern is changed on screen process press, the spacing of half tone and printing machine platform for 4~
5mm；
C, scraper from shore hardness be 70 degree of perpendicular type frictioning, and on screen process press doctor blade holder with half tone into
75 degree of angles；With conductive paste on the left of half tone, the returning blade tool on operation screen process press is uniformly bulldozed silver paste on half tone, comes
Return once；For shielding during more than 50MHZ signals, using solid content 59%, density 1.84kg/L, viscosity 4600~7400, weight
Amount 100~200g silver pastes；For shielding during more than 1000KHZ signals, using solid content 45%, density 1.3kg/L, viscosity 4600
~7400, the silver-bearing copper conductive paste of 100~150g of weight；During for magnetic screen, using solid content 48%, density 1.4kg/L, viscosity
4600~7400, the nickel conductive paste of 100~180g of weight.
D, half tone take the PET material that step b is obtained after rising, and colored ink is faced up and is placed in silk-screen printing machine table top,
PET material is held using the wind inlet on table top, and is removed the dust of material surface with dedusting roller clean；
E, operation screen process press put down half tone, move scraper, and conductive silver paste passes through the area of the pattern on half tone, in pattern
The colored ink face of layer 23 leaves screen layer 24；
F, stopping air draught, 98 DEG C of ± 2 DEG C of heat are moved on to from printing table by the PET sheet material with patterned layer 23 and screen layer 24
On the conveyer belt of drying tunnel, it is placed on net car by after 3.5min preliminary drying dry-cure, being re-fed into oven heat carries out heat cure treatment,
130 DEG C ± 3 DEG C of temperature, baking time are 30min.
The circular hole of a diameter of 0.12mm of technique via 28, the pattern of screen layer 24 is line width 1.0mm, line sky compares 1：3.2
Rectangular mesh.Septal line is empty to get over the shielding for being conducive to frequency electromagnetic waves, otherwise i.e. septal line sky than more big more favourable than smaller
In the shielding of low-frequency electromagnetic wave.
See Fig. 3, TVS power supply protectors are connected between ground plane 11 and bus plane 12；The ground plane 11 of printed circuit board (PCB) 1 with
The screen layer 24 of thin-film key panel 2 is connected.The ground plane 11 of printed circuit board (PCB) 1, bus plane 12 and some signals layers 13 are all
Conductive, many interference are faced, the Hz noise of 50HZ is there are on bus plane 12, each quefrency can be sealed on signals layer 13
The different interference signal of composition, for bus plane, using between bus plane and ground plane and connecing TVS power protection devices, by
It is the main cause for causing circuit to damage in transient high voltages and current interference.Using TVS it is a kind of in film key switch
Good electromagnetism interference means.When TVS power supply protectors two ends are subject to moment high energy impact events, it can be with high speed
(up to 1/ (10^12) second) makes its impedance reduce suddenly, while interference electric current is absorbed, its both end voltage clamp is pre- at one
In definite value, so that it is guaranteed that circuit element below is damaged from interference impact.Tried one's best in wiring ground wire cloth is wide or will printed
Ground wire is filled up at the place of leaving a blank of printed circuit board, to reduce interference that conductor resistance produces in itself or locate the place of leaving a blank as screen layer
Reason.
Then screen layer 24 and conductive adhesive layer 26 are passed through into multiple technique vias 28 to be connected, then is bonded conductive adhesive layer 26, presses
Key mat layer 27, you can form thin-film key panel, then carry out hot-forming treatment, forms button cavity space, thus lifts feel
Pressing effect, finally connects with printed circuit board (PCB) 1 and just obtained mining instrument thin-film key switch again.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. a kind of mining instrument thin-film key switch, is pressed by printed circuit board (PCB) (1) and the film being covered on printed circuit board (PCB) (1)
Keyboard plate (2) is constituted；It is characterized in that：
The printed circuit board (PCB) (1) is followed successively by ground plane (11), bus plane (12) and some signals layers (13) from the bottom to top；It is described
TVS power supply protectors are connected between ground plane (11) and bus plane (12)；
The thin-film key panel (2) is from top to bottom followed successively by：First protective layer (21), pet substrate (22), patterned layer (23),
Screen layer (24), the second protective layer (25), conductive adhesive layer (26) and button bed course (27)；The pet substrate (22), patterned layer
(23) at least one technique via (28), is set on screen layer (24), the second protective layer (25) and conductive adhesive layer (26), will be shielded
Layer (24) and conductive adhesive layer (26) connection；
The ground plane (11) of the printed circuit board (PCB) (1) is connected with the screen layer (25) of thin-film key panel (2).
2. a kind of mining instrument thin-film key switch according to claim 1, it is characterised in that：First protective layer
And the second protective layer (25) is UV ink (21)；The screen layer (25) is conductive paste.
3. a kind of mining instrument thin-film key switch according to claim 2, it is characterised in that：The conductive adhesive layer (26)
Each layer of the area more than portion disposed thereon.
4. a kind of preparation method of mining instrument thin-film button screen layer, it is characterised in that comprise the following steps：
Step one：Prepare PET base material (22), and the printing pattern layer (23) in PET base material (22)；
Step 3：Screen layer (24) is made in patterned layer (23)；
A, the technique via (28) for cutting out on laser cutting machine the connection positive and negative conductive materials of PET base material, send after the completion of cutting
To screen process press；
B, half tone of the replacing equipped with shielding layer pattern on screen process press, half tone are 4~5mm with the spacing of printing machine platform；
C, scraper from shore hardness be 70 degree of perpendicular type frictioning, and on screen process press doctor blade holder with half tone into 75 degree
Angle；With conductive paste on the left of half tone, the returning blade tool on operation screen process press is uniformly bulldozed silver paste on half tone, and back and forth one
It is secondary；
D, half tone take the PET material that step b is obtained after rising, and colored ink is faced up and is placed in silk-screen printing machine table top, utilize
Wind inlet on table top holds PET material, and is removed the dust of material surface with dedusting roller clean；
E, operation screen process press put down half tone, move scraper, and conductive silver paste passes through the area of the pattern on half tone, in patterned layer
(23) colored ink face leaves screen layer (24).
5. the preparation method of a kind of mining instrument thin-film button screen layer according to claim 4, it is characterised in that：
The specific method of the step one is：Printing color ink obtains patterned layer in the thick PET base materials (23) of 0.35mm
(24), by 100 DEG C of ± 2 DEG C of hot drying tunnel 2.5min preliminary drying dry-cure, it is positioned over standby on net car.
6. the preparation method of a kind of mining instrument thin-film button screen layer according to claim 5, it is characterised in that：It is described
Also include in step 2：F, stopping air draught, move on to the PET sheet material with patterned layer (23) and screen layer (24) from printing table
On 98 DEG C of conveyer belts of ± 2 DEG C of hot drying tunnels, it is placed on net car by after 3.5min preliminary drying dry-cure, being re-fed into oven heat is carried out
Heat cure is processed, and 130 DEG C ± 3 DEG C of temperature, baking time are 30min.
7. the preparation method of a kind of mining instrument thin-film button screen layer according to claim 6, it is characterised in that：It is described
In step 2, the circular hole of a diameter of 0.12mm of technique via (28), the pattern of screen layer (24) is line width 1.0mm, the empty ratio of line
1：3.2 rectangular mesh.
8. the preparation method of a kind of mining instrument thin-film button screen layer according to claim 7, it is characterised in that：It is described
In step 2, for shield more than 50MHZ signals when, using solid content 59%, density 1.84kg/L, viscosity 4600~7400,
Weight 100~200g silver pastes；For shielding during more than 1000KHZ signals, using solid content 45%, density 1.3kg/L, viscosity
4600~7400, the silver-bearing copper conductive paste of 100~150g of weight；During for magnetic screen, using solid content 48%, density 1.4kg/L,
Viscosity 4600~7400, the nickel conductive paste of 100~180g of weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247612.4A CN106876204B (en) | 2017-04-14 | 2017-04-14 | Mining instrument thin film key switch and manufacturing method of shielding layer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247612.4A CN106876204B (en) | 2017-04-14 | 2017-04-14 | Mining instrument thin film key switch and manufacturing method of shielding layer thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106876204A true CN106876204A (en) | 2017-06-20 |
| CN106876204B CN106876204B (en) | 2020-03-06 |
Family
ID=59162348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710247612.4A Active CN106876204B (en) | 2017-04-14 | 2017-04-14 | Mining instrument thin film key switch and manufacturing method of shielding layer thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106876204B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876204B (en) * | 2017-04-14 | 2020-03-06 | 常州信息职业技术学院 | Mining instrument thin film key switch and manufacturing method of shielding layer thereof |
| CN111935967A (en) * | 2020-08-18 | 2020-11-13 | 无锡华测电子***有限公司 | Electromagnetic shielding structure of multi-channel tile type transceiving component and installation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1870881A (en) * | 2006-05-25 | 2006-11-29 | 七二国际股份有限公司 | Electromagnetic shielded film and its manufacturing method |
| CN1965562A (en) * | 2004-06-04 | 2007-05-16 | 韩郁情报技术有限公司 | El sheet and dome keypad using the same |
| CN200976709Y (en) * | 2006-09-25 | 2007-11-14 | 佛山市顺德区顺达电脑厂有限公司 | Circuit board stack structure capable of suppressing electromagnetic radiation |
| CN101189930A (en) * | 2005-06-20 | 2008-05-28 | 东丽株式会社 | Method for producing electromagnetic wave shielding sheet, electromagnetic wave shielding sheet produced by such method, and filter and display employing same |
| CN204067347U (en) * | 2014-07-14 | 2014-12-31 | 江西亚菲达铜业有限公司 | A kind of riveted joint has the copper coin of ceramic bases |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876204B (en) * | 2017-04-14 | 2020-03-06 | 常州信息职业技术学院 | Mining instrument thin film key switch and manufacturing method of shielding layer thereof |
-
2017
- 2017-04-14 CN CN201710247612.4A patent/CN106876204B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965562A (en) * | 2004-06-04 | 2007-05-16 | 韩郁情报技术有限公司 | El sheet and dome keypad using the same |
| CN101189930A (en) * | 2005-06-20 | 2008-05-28 | 东丽株式会社 | Method for producing electromagnetic wave shielding sheet, electromagnetic wave shielding sheet produced by such method, and filter and display employing same |
| CN1870881A (en) * | 2006-05-25 | 2006-11-29 | 七二国际股份有限公司 | Electromagnetic shielded film and its manufacturing method |
| CN200976709Y (en) * | 2006-09-25 | 2007-11-14 | 佛山市顺德区顺达电脑厂有限公司 | Circuit board stack structure capable of suppressing electromagnetic radiation |
| CN204067347U (en) * | 2014-07-14 | 2014-12-31 | 江西亚菲达铜业有限公司 | A kind of riveted joint has the copper coin of ceramic bases |
Non-Patent Citations (1)
| Title |
|---|
| 郑德海: "《现代丝网印刷应用实例集锦》", 30 March 2003, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876204B (en) * | 2017-04-14 | 2020-03-06 | 常州信息职业技术学院 | Mining instrument thin film key switch and manufacturing method of shielding layer thereof |
| CN111935967A (en) * | 2020-08-18 | 2020-11-13 | 无锡华测电子***有限公司 | Electromagnetic shielding structure of multi-channel tile type transceiving component and installation method |
| CN111935967B (en) * | 2020-08-18 | 2024-02-20 | 无锡华测电子***有限公司 | Method for installing electromagnetic shielding structure of multichannel tile type transceiver component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106876204B (en) | 2020-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106847590B (en) | A kind of production method of film key switch and thin-film key panel | |
| US4670347A (en) | RFI/EMI shielding apparatus | |
| US20100157545A1 (en) | Interference shielded electronics module and method for providing the same | |
| DE3071752D1 (en) | Printed circuit board | |
| TW200618689A (en) | Circuit device and manufacture method for circuit device | |
| CN106876204A (en) | A kind of preparation method of mining instrument thin-film key switch and its screen layer | |
| US5262596A (en) | Printed wiring board shielded from electromagnetic wave | |
| CN106847593B (en) | A kind of production method of weighing instrument film key switch and its antistatic backing | |
| CN106448974A (en) | Pressure-sensitive resistor capable of preventing aluminum electrode layer from hydrothermal ageing and invalidation and preparation method of pressure-sensitive resistor | |
| KR20060087820A (en) | Thin electromagnetic shielding tape, electromagnetic shielding structure using thereof and manufacturing method thereof | |
| CN103092445A (en) | Manufacturing method of capacitive touchpad | |
| CN206619535U (en) | A kind of film key switch | |
| CN107635385B (en) | ESD full-shielding functional foil, full-shielding functional foil circuit board and manufacturing method | |
| CN206657764U (en) | A kind of weighing instrument film key switch | |
| CN207305265U (en) | A kind of shielding construction and terminal | |
| CN206657763U (en) | A kind of mining instrument thin-film key switch | |
| CN105304508A (en) | Electronic packaging module manufacturing method and structure | |
| CN206423015U (en) | A kind of light guide panel of the anti-electromagnetic interference of waterproof | |
| CN210129978U (en) | Semiconductor microwave generating device | |
| CN107221859A (en) | A kind of website distribution box | |
| CN105101622B (en) | A kind of wiring board with shielding construction and preparation method thereof | |
| JPS5662349A (en) | Semiconductor device | |
| CN202664984U (en) | Non-radiation electric heating blanket | |
| CN206977918U (en) | A kind of anti-electromagnetic interference printed circuit board (PCB) | |
| JPS5627962A (en) | Integrated circuit device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200612 Address after: No.120 Xihu Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: CHANGZHOU PULIMAI ELECTRONIC DEVICES Co.,Ltd. Address before: 213164 Changzhou Province, the city of Jiangsu City University Road, No. 22 Patentee before: CHANGZHOU College OF INFORMATION TECHNOLOGY |
|
| TR01 | Transfer of patent right |