CN106847590B - A kind of production method of film key switch and thin-film key panel - Google Patents
A kind of production method of film key switch and thin-film key panel Download PDFInfo
- Publication number
- CN106847590B CN106847590B CN201710247388.9A CN201710247388A CN106847590B CN 106847590 B CN106847590 B CN 106847590B CN 201710247388 A CN201710247388 A CN 201710247388A CN 106847590 B CN106847590 B CN 106847590B
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- Prior art keywords
- layer
- thin
- halftone
- film key
- pet
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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
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric 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
- H01H13/02—Details
-
- 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
-
- 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
-
- 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
- H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
- H05K1/0257—Overvoltage protection
- H05K1/0259—Electrostatic discharge [ESD] protection
Abstract
The invention discloses the production method of a kind of film key switch and thin-film key panel, film key switch is made of the thin-film key panel of printed circuit board and covering on a printed circuit；Printed circuit board is followed successively by ground plane, bus plane and several signals layers from the bottom to top；TVS power supply protector is connected between ground plane and bus plane；ESD electrostatic impedor is connected between the ground plane and several signals layers；Thin-film key panel is from top to bottom successively are as follows: the first protective layer, antistatic backing, pet substrate, pattern layer, shielded layer, the second protective layer, conductive adhesive layer and key bed course；The ground plane of the printed circuit board and the shielded layer of thin-film key panel and antistatic backing connect.The present invention using between bus plane and ground plane and connect TVS power protection device come reduce moment generation electromagnetic interference; using between signal wire and ground wire and connect ESD electrostatic impedor come reduce due to touch act on and generate electrostatic phenomenon, protect protection key thin film switch itself.
Description
Technical field
The present invention relates to the production methods of a kind of film key switch and thin-film key panel.
Background technique
Operation panel is used as using film key switch on current many electronic products, is bringing easy to operate and beauty big
While square, the problem of also encountering electromagnetic shielding and electrostatic interference: on the one hand since there are a large amount of for film key switch itself
Gap, the shielding of this electron product brings very big problem, the route and component of another aspect switch sections be easy by
The interference of radio frequency and electrostatic leads to the malfunction of operation, therefore it is particularly critical to solve its shielding problem.
Summary of the invention
The first purpose of the invention is to provide a kind of film key switches.
The technical solution for realizing first purpose of the invention is a kind of film key switch, by printed circuit board and is covered on
Thin-film key panel composition on printed circuit board；
The printed circuit board is followed successively by ground plane, bus plane and several signals layers from the bottom to top；The ground plane and electricity
TVS power supply protector is connected between active layer；ESD electrostatic impedor is connected between the ground plane and several signals layers；
The thin-film key panel is from top to bottom successively are as follows: the first protective layer, antistatic backing, pet substrate, pattern layer, screen
Cover layer, the second protective layer, conductive adhesive layer and key bed course；First protective layer, antistatic backing, pet substrate, pattern layer,
One transparent window is set on shielded layer, the second protective layer and conductive adhesive layer；The antistatic backing, pet substrate, pattern layer, screen
It covers and at least one technique via hole is set on layer, the second protective layer and conductive adhesive layer, antistatic backing, shielded layer and conductive adhesive layer are connected
It connects；
The ground plane of the printed circuit board and the shielded layer of thin-film key panel and antistatic backing connect.
The antistatic backing is transparent conductive ink；First protective layer and the second protective layer are UV ink；The screen
Covering layer is silver paste.
The conductive adhesive layer area is greater than each layer in portion disposed thereon.
A second object of the present invention is to provide a kind of production methods of thin-film key panel.
The technical solution for realizing second purpose of the invention is a kind of production method of thin-film key panel, including following step
It is rapid:
Step 1: the structure of thin-film key panel is determined；
Step 2: prepare PET base material, and the printing pattern layer in PET base material；
Step 3: shielded layer is made in pattern layer；
Step 4: antistatic backing is made using silk-screen printing in the another side of PET base material；
Step 5: the second protective layer is covered on the shielding layer；The first protective layer is covered on antistatic backing；In the second protection
Conductive adhesive layer and key bed course are successively pasted on layer.
The step 2 method particularly includes: printing color ink obtains pattern layer in the PET base material of 0.2mm thickness, warp
98 DEG C of ± 2 DEG C of hot drying tunnel 2.5min preliminary drying dry-cure are crossed, are then 0.06mm blue in the colored ink face cladding thickness of pattern layer
Color LK-820B protective film；
The specific way of the step 3 are as follows:
A, the material for obtaining step 2 is sent to puncher, punches to obtain diameter 2mm location hole；
B, punched material is sent to laser cutting machine, is aligned on laser cutting machine using location hole, the company of being cut into
The technique via hole of the positive and negative conductive materials of PET base material is connect, is sent after the completion of cutting to screen process press；
C, halftone of the replacement equipped with shielding layer pattern on screen process press, the spacing of halftone and printing machine platform is 4~
5mm；
D, scraper select shore hardness be 70 degree of perpendicular type frictioning, and be mounted on screen process press doctor blade holder with halftone at
75 degree of angles；Select solid content 59%, density 1.84kg/L, viscosity 4600~7400, the silver paste of 100~200g of weight on a halftone left side
Side operates the ink-retruning blade tool on screen process press, silver paste is uniformly bulldozed on halftone；
E, colored ink, is placed in silk-screen printing machine table top by the PET material that halftone takes step b to obtain after rising up,
The blue LK-820B protective film on PET is sucked using the wind inlet on table top, and with dedusting idler wheel that the dust of material surface is clear
Except clean；
F, operation screen process press puts down halftone, and mobile scraper, conductive silver paste is by the area of the pattern on halftone, in pattern
The colored ink face of layer leaves shielded layer；
G, stop air draught, move on to 98 DEG C of ± 2 DEG C of hot drying tunnels from printing table by the PET sheet material with pattern layer and shielded layer
Conveyer belt on, be placed on net vehicle after 3.5min preliminary drying dry-cure.
In the step 3, the diameter of technique via hole is the circular hole of 0.12mm, and the pattern of shielded layer is line width 1.0mm, line
The rectangular mesh of sky ratio 1:4.2.
The step 4 method particularly includes:
A, replacement is equipped with the halftone of antistatic backing pattern on screen process press, and the spacing of halftone and printing machine platform is 4~
5mm；
B, selecting scraper shore hardness is 70 degree of perpendicular type frictioning, is installed on screen process press doctor blade holder and halftone
At 70 degree of angles；Select 15~60dPas of viscosity, sheet resistance value≤700ohm transparent conductive ink, in centrifuge with 1500 turns/
Minute stirring uses after 30 minutes, then operates the ink-retruning blade on screen process press and is uniformly bulldozed electrically conductive ink slurry on halftone；
C, the PET sheet material that halftone takes step 3 to obtain after rising, shielded layer are placed in silk-screen printing machine table top downward, utilize platform
PET is sucked in wind inlet on face, and is removed the dust of material surface completely with dedusting idler wheel；
E, operation screen process press puts down halftone, mobile scraper, and transparent conductive ink is starched through the area of the pattern on halftone,
The pattern of antistatic backing is left on PET base material surface；
F, stop air draught moving on to PET sheet material from printing table on the conveyer belt of 98 DEG C of ± 2 DEG C of hot drying tunnels, it is pre- by 2min
It is placed into after drying and processing on net vehicle；
G, molding panel is sent into 130 DEG C ± 3 DEG C of oven heat baking, waits 30min curing process；After heat cure
What the surface of PET sheet material was formed prevents quiet layer；
H, whether had been turned on resistance measuring instrument test PET base material two sides, the panel that test passes through is re-fed into 130 DEG C
± 3 DEG C of oven heat baking waits 20min curing process；After heat cure PET base material front be completely spread it is transparent with a thickness of 4um
The antistatic backing of conductive materials, the back side are the shielded layer with a thickness of 6um silver paste grid.
After above-mentioned technical proposal, present invention offers below the utility model has the advantages that (1) present invention is using in bus plane
Between ground plane and connect TVS power protection device to reduce the electromagnetic interference of moment generation, using signal wire and ground wire it
Between and connect ESD electrostatic impedor come reduce due to touch act on and generate electrostatic phenomenon；Ensure subsequent circuit element from
The impact of transient state high-energy and damage, avoid the maloperation of electrostatic bring or button malfunction, protect protection key film open
Close itself.
(2) antistatic backing, shielded layer and conductive adhesive layer are passed through multiple technique mistakes that key frame surrounding is arranged in by the present invention
Hole is connected, then is connected by conductive adhesive layer with metal chassis, so that forming a strict shielding cavity with equipment monolithic case, makes
Intracavitary component is obtained by Global Macros, can guarantee component steady production under the conditions of no radio frequency and electrostatic interference.
(3) one layer of key bed course is arranged in the present invention between printed circuit board 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 effectiveness, has high conductivity and high electromagnetic shielding efficiency, passes through control
The type of wire printing material processed, thickness, linear and shape reach the shield effectiveness to different wave frequencies.
(5) antistatic backing of the invention uses transparent conductive coating silk-screen in transparent window area, both meets viewfinder area
Display effect, while the efficiency of antistatic can also be reached.
(6) technique of the invention significantly reduces the manufacturing cost of film key switch, is suitable for producing in enormous quantities, can answer
EMI for aerospace, mine ocean and fine measuring instrument equipment operation key panel is shielded.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the main view that film key of the invention switchs.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is circuit diagram of the invention.
Numbering in the drawing are as follows:
Printed circuit board 1, ground plane 11, bus plane 12, several signals layers 13, thin-film key panel 2, the first protective layer
21, antistatic backing 22, pet substrate 23, pattern layer 24, shielded layer 25, the second protective layer 26, conductive adhesive layer 27, key bed course 28,
Transparent window 29, technique via hole 210, key 211.
Specific embodiment
(embodiment 1)
See that Fig. 1 and Fig. 2, a kind of film key switch of the present embodiment by printed circuit board 1 and are covered on printed circuit board
Thin-film key panel 2 on 1 forms；Printed circuit board 1 is followed successively by ground plane 11, bus plane 12 and several signals layers from the bottom to top
13.Thin-film key panel 2 is from top to bottom successively are as follows: the first protective layer 21, antistatic backing 22, pet substrate 23, pattern layer 24, screen
Cover layer 25, the second protective layer 26, conductive adhesive layer 27 and key bed course 28；In the first protective layer 21, antistatic backing 22, pet substrate
23, a transparent window 29 is set on pattern layer 24, shielded layer 25, the second protective layer 26 and conductive adhesive layer 27；Antistatic backing 22,
At least one technique via hole is set on pet substrate 23, pattern layer 24, shielded layer 25, the second protective layer 26 and conductive adhesive layer 27
210, antistatic backing 22, shielded layer 25 and conductive adhesive layer 27 are connected；Antistatic backing 22 is transparent conductive ink；First protective layer
21 and second protective layer 26 be UV ink；Shielded layer 25 is silver paste.27 area of conductive adhesive layer is greater than each layer in portion disposed thereon, uses
In with chassis contact.
See Fig. 3, TVS power supply protector is connected between ground plane 11 and bus plane 12；Ground plane 11 and several signals layers 13
Between connect ESD electrostatic impedor；The ground plane 11 of printed circuit board 1 and the shielded layer 25 of thin-film key panel 2 and antistatic
Layer 22 connects.Ground plane 11, bus plane 12 and several signals layers 13 of printed circuit board 1 be all it is conductive, face many interference,
There are the Hz noise of 50HZ on bus plane 12, the different interference signal of all kinds of frequency contents can be sealed on signals layer 13,
For bus plane, using between bus plane and ground plane and TVS power protection device is connect, since transient high voltages and electric current are dry
Disturb is the main reason for causing circuit to damage.It is a kind of good electromagnetism interference means that TVS is used in film key switch.
When TVS power supply protector both ends are by moment high energy impact events, it can be made with high speed (up to 1/ (10^12) second)
Its impedance reduces suddenly, while absorbing interference electric current, by its both end voltage clamp in a predetermined value, so that it is guaranteed that subsequent
Circuit element is damaged from interference impact.It is as far as possible that ground wire cloth is wide or ground is filled up in the place of leaving a blank of printed circuit board in wiring
Line, to reduce interference that conductor resistance itself generates or handle as shielded layer the place of leaving a blank.For signal line layer, using
Between signal wire and ground wire and ESD electrostatic impedor is connect, will be generated on the surface of film key switch since touch acts on
Electrostatic phenomenon；Since potential difference can be generated on key conducting wire, the device breakdown being connected on the lead can be caused to damage.Using
ESD electrostatic impedor eliminates the electrostatic effect of key switch panel, and effect is fine.It will be as far as possible by low-and high-frequency in cloth signal wire
Signal separates, and modulus signal is separated, interferes with each other to avoid various types of signal.
About the production method of thin-film key panel and the key of the present embodiment.The following steps are included:
Step 1: determine that the structure of thin-film key panel 2 is as depicted in figs. 1 and 2；
Step 2: prepare PET base material 23, and the printing pattern layer 24 in PET base material 23；Method particularly includes: in 0.2mm thickness
PET base material 23 on printing color ink obtain pattern layer 24, by 98 DEG C of ± 2 DEG C of hot drying tunnel 2.5min preliminary drying dry-cure, so
It is afterwards 0.06mm blue LK-820B protective film in the colored ink face cladding thickness of pattern layer 24；
Step 3: shielded layer 25 is made in pattern layer 24；
A, the material for obtaining step 2 is sent to puncher, punches to obtain diameter 2mm location hole；
B, punched material is sent to laser cutting machine, is aligned on laser cutting machine using location hole, the company of being cut into
The technique via hole 210 of the positive and negative conductive materials of PET base material is connect, is sent after the completion of cutting to screen process press；The diameter of technique via hole 210
For the circular hole of 0.12mm.
C, halftone of the replacement equipped with shielding layer pattern on screen process press, the spacing of halftone and printing machine platform is 4~
5mm；, the pattern of shielded layer 25 is the rectangular mesh of line width 1.0mm, line sky ratio 1:4.2；
D, scraper select shore hardness be 70 degree of perpendicular type frictioning, and be mounted on screen process press doctor blade holder with halftone at
75 degree of angles；Select solid content 59%, density 1.84kg/L, viscosity 4600~7400, the silver paste of 100~200g of weight on a halftone left side
Side operates the ink-retruning blade tool on screen process press, silver paste is uniformly bulldozed on halftone；
E, colored ink, is placed in silk-screen printing machine table top by the PET material that halftone takes step b to obtain after rising up,
The blue LK-820B protective film on PET is sucked using the wind inlet on table top, and with dedusting idler wheel that the dust of material surface is clear
Except clean；
F, operation screen process press puts down halftone, and mobile scraper, conductive silver paste is by the area of the pattern on halftone, in pattern
The colored ink face of layer 24 leaves shielded layer 25；
G, stop air draught, move on to 98 DEG C of ± 2 DEG C of heat from printing table by the PET sheet material with pattern layer 24 and shielded layer 25
On the conveyer belt of drying tunnel, it is placed on net vehicle after 3.5min preliminary drying dry-cure.
Step 4: antistatic backing 22 is made using silk-screen printing in the another side of PET base material 23；
A, replacement is equipped with the halftone of antistatic backing pattern on screen process press, and the spacing of halftone and printing machine platform is 4~
5mm；
B, selecting scraper shore hardness is 70 degree of perpendicular type frictioning, is installed on screen process press doctor blade holder and halftone
At 70 degree of angles；Select 15~60dPas of viscosity, sheet resistance value≤700ohm transparent conductive ink, in centrifuge with 1500 turns/
Minute stirring uses after 30 minutes, then operates the ink-retruning blade on screen process press and is uniformly bulldozed electrically conductive ink slurry on halftone；
C, the PET sheet material that halftone takes step 3 to obtain after rising, shielded layer 25 are placed in silk-screen printing machine table top downward, utilize
PET is sucked in wind inlet on table top, and is removed the dust of material surface completely with dedusting idler wheel；
E, operation screen process press puts down halftone, mobile scraper, and transparent conductive ink is starched through the area of the pattern on halftone,
The pattern of antistatic backing is left on 23 surface of PET base material；
F, stop air draught moving on to PET sheet material from printing table on the conveyer belt of 98 DEG C of ± 2 DEG C of hot drying tunnels, it is pre- by 2min
It is placed into after drying and processing on net vehicle；
G, molding panel is sent into 130 DEG C ± 3 DEG C of oven heat baking, waits 30min curing process；After heat cure
What the surface of PET sheet material was formed prevents quiet layer 22；
H, whether had been turned on resistance measuring instrument test 23 two sides of PET base material, the panel that test passes through is re-fed into 130
DEG C ± 3 DEG C of oven heat baking waits 20min curing process；23 front of PET base material is completely to spread with a thickness of 4um after heat cure
The antistatic backing 22 of transparent conductive material, the back side are the shielded layer 25 with a thickness of 6um silver paste grid.
The antistatic backing and shielded layer of film key switch accomplish design all over the screen as far as possible, can adopt at the transparent place of thin film switch
With whole face coating or silk-screen, coating or silk-screen are carried out using transparent conductive ink, thickness is generally at 3~6 microns.In impermeable daylight
It can be printed using silk screen printing process, be printed as the rectangle net trellis latticed, pattern is, (can be Saint Andrew's cross or positive cross
Intersect)；Line width 0.5-2.5, for septal line sky than control in 1:1.2-1:4.2, i.e. septal line sky is more conducive to high-frequency electrical than smaller
The shielding of magnetic wave, on the contrary i.e. the septal line sky than the big more be conducive to the shielding of low-frequency electromagnetic wave.Applied thickness control is micro- 3~15
Rice
Step 5: the second protective layer 26 is covered on shielded layer 25；The first protective layer 21 is covered on antistatic backing 22；?
Conductive adhesive layer 27 and key bed course 28 are successively pasted on second protective layer 26.
Then antistatic backing 22, shielded layer 25 and conductive adhesive layer 27 are connected by multiple technique via holes 210, then are bonded and lead
Electric glue-line 27, key bed course 28 can form thin-film key panel, then carry out hot-forming processing, form key cavity space, by
This promotes feel and presses effect, has finally just obtained film key switch with the connection of printed circuit board 1 again.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (6)
1. a kind of production method of thin-film key panel, it is characterised in that the following steps are included:
Step 1: the structure of thin-film key panel (2) is determined；
Thin-film key panel (2) is by printed circuit board (1) and thin-film key panel (2) group being covered on printed circuit board (1)
At；The printed circuit board (1) is followed successively by ground plane (11), bus plane (12) and several signals layers (13) from the bottom to top；It is described
TVS power supply protector is connected between ground plane (11) and bus plane (12)；The ground plane (11) and several signals layers (13) it
Between connect ESD electrostatic impedor；
The thin-film key panel (2) is from top to bottom successively are as follows: the first protective layer (21), antistatic backing (22), pet substrate
(23), pattern layer (24), shielded layer (25), the second protective layer (26), conductive adhesive layer (27) and key bed course (28)；Described
One protective layer (21), antistatic backing (22), pet substrate (23), pattern layer (24), shielded layer (25), the second protective layer (26) and
One transparent window (29) is set on conductive adhesive layer (27)；The antistatic backing (22), pet substrate (23), pattern layer (24), screen
It covers and at least one technique via hole (210) is set on layer (25), the second protective layer (26) and conductive adhesive layer (27), by antistatic backing
(22), shielded layer (25) and conductive adhesive layer (27) connection；
The ground plane (11) of the printed circuit board (1) and the shielded layer (25) of thin-film key panel (2) and antistatic backing (22)
Connection；
The antistatic backing (22) is transparent conductive ink；First protective layer (21) and the second protective layer (26) are UV oil
Ink；The shielded layer (25) is silver paste；
Conductive adhesive layer (27) area is greater than each layer in portion disposed thereon；
Step 2: prepare PET base material (23), and the printing pattern layer (24) on PET base material (23)；
Step 3: shielded layer (25) are made on pattern layer (24)；
Step 4: antistatic backing (22) are made using silk-screen printing in the another side of PET base material (23)；
Step 5: the second protective layer (26) are covered on shielded layer (25)；The first protective layer is covered on antistatic backing (22)
(21)；Conductive adhesive layer (27) and key bed course (28) are successively pasted on the second protective layer (26).
2. a kind of production method of thin-film key panel according to claim 1, it is characterised in that:
The step 2 method particularly includes: printing color ink obtains pattern layer in the PET base material (23) of 0.2mm thickness
(24), by 98 DEG C of ± 2 DEG C of hot drying tunnel 2.5min preliminary drying dry-cure, then in the colored ink face cladding thickness of pattern layer (24)
For 0.06mm blue LK-820B protective film；
The specific way of the step 3 are as follows:
A, the material for obtaining step 2 is sent to puncher, punches to obtain diameter 2mm location hole；
B, punched material is sent to laser cutting machine, is aligned on laser cutting machine using location hole, be cut into connection PET
The technique via hole (210) of the positive and negative conductive materials of substrate is sent after the completion of cutting to screen process press；
C, the spacing of halftone of the replacement equipped with shielding layer pattern on screen process press, halftone and printing machine platform is 4~5mm；
D, it is 70 degree of perpendicular type frictioning that scraper, which selects shore hardness, and is mounted on screen process press doctor blade holder with halftone into 75 degree
Angle；Select solid content 59%, density 1.84kg/L, viscosity 4600~7400, the silver paste of 100~200g of weight on the left of halftone,
The ink-retruning blade tool on screen process press is operated, silver paste is uniformly bulldozed on halftone；
E, colored ink, is placed in silk-screen printing machine table top by the PET material that halftone takes step b to obtain after rising up, is utilized
The blue LK-820B protective film on PET is sucked in wind inlet on table top, and removes the dust of material surface with dedusting idler wheel and do
Only；
F, operation screen process press puts down halftone, and mobile scraper, conductive silver paste is by the area of the pattern on halftone, in pattern layer
(24) colored ink face leaves shielded layer (25).
3. a kind of production method of thin-film key panel according to claim 2, it is characterised in that: in the step 3 also
Include: g, stop air draught, moves on to 98 DEG C ± 2 DEG C from printing table by the PET sheet material with pattern layer (24) and shielded layer (25)
On the conveyer belt of hot drying tunnel, it is placed on net vehicle after 3.5min preliminary drying dry-cure.
4. a kind of production method of thin-film key panel according to claim 3, it is characterised in that: in the step 3,
The diameter of technique via hole (210) is the circular hole of 0.12mm, and the pattern of shielded layer (25) is the square of line width 1.0mm, line sky ratio 1:4.2
Shape grid.
5. a kind of production method of thin-film key panel according to claim 4, it is characterised in that:
The step 4 method particularly includes:
A, the spacing of halftone of the replacement equipped with antistatic backing pattern on screen process press, halftone and printing machine platform is 4~5mm；
B, selecting scraper shore hardness is 70 degree of perpendicular type frictioning, is installed on screen process press doctor blade holder with halftone at 70
Spend angle；15~60dPas of viscosity, sheet resistance value≤700ohm transparent conductive ink are selected, with 1500 revs/min in centrifuge
Stirring uses after 30 minutes, then operates the ink-retruning blade on screen process press and is uniformly bulldozed electrically conductive ink slurry on halftone；
C, the PET sheet material that halftone takes step 3 to obtain after rising, shielded layer (25) are placed in silk-screen printing machine table top downward, utilize platform
PET is sucked in wind inlet on face, and is removed the dust of material surface completely with dedusting idler wheel；
E, operation screen process press puts down halftone, mobile scraper, transparent conductive ink slurry by the area of the pattern on halftone,
PET base material (23) surface leaves the pattern of antistatic backing；
F, stop air draught moving on to PET sheet material from printing table on the conveyer belt of 98 DEG C of ± 2 DEG C of hot drying tunnels, by 2min prebake
It is placed into after processing on net vehicle；
G, molding panel is sent into 130 DEG C ± 3 DEG C of oven heat baking, waits 30min curing process；PET sheet after heat cure
What the surface of material was formed prevents quiet layer (22).
6. a kind of production method of thin-film key panel according to claim 5, it is characterised in that: the step 4 is also wrapped
It includes: h, whether being had been turned on resistance measuring instrument test PET base material (23) two sides, the panel that test passes through is re-fed into 130 DEG C
± 3 DEG C of oven heat baking waits 20min curing process；PET base material (23) front is completely to spread with a thickness of 4um after heat cure
The antistatic backing (22) of transparent conductive material, the back side are the shielded layer (25) with a thickness of 6um silver paste grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247388.9A CN106847590B (en) | 2017-04-14 | 2017-04-14 | A kind of production method of film key switch and thin-film key panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107799347B (en) * | 2017-10-30 | 2019-03-15 | 武汉理工大学 | A kind of in-mould injection thin film switch |
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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 |
| 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 |
| CN104684239A (en) * | 2013-11-27 | 2015-06-03 | 鸿富锦精密工业（深圳）有限公司 | Circuit board capable of reducing signal crosstalk |
| CN206619535U (en) * | 2017-04-14 | 2017-11-07 | 常州信息职业技术学院 | A kind of film key switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5958476B2 (en) * | 2014-01-17 | 2016-08-02 | Tdk株式会社 | Transparent conductor and touch panel |
-
2017
- 2017-04-14 CN CN201710247388.9A patent/CN106847590B/en not_active Expired - Fee Related
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 |
| 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 |
| CN104684239A (en) * | 2013-11-27 | 2015-06-03 | 鸿富锦精密工业（深圳）有限公司 | Circuit board capable of reducing signal crosstalk |
| 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 |
| CN206619535U (en) * | 2017-04-14 | 2017-11-07 | 常州信息职业技术学院 | A kind of film key switch |
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