CN107428150B - Laminater - Google Patents
Laminater Download PDFInfo
- Publication number
- CN107428150B CN107428150B CN201680016748.8A CN201680016748A CN107428150B CN 107428150 B CN107428150 B CN 107428150B CN 201680016748 A CN201680016748 A CN 201680016748A CN 107428150 B CN107428150 B CN 107428150B
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- China
- Prior art keywords
- display device
- pressure
- display
- bridging agent
- inner cavity
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1009—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using vacuum and fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
Abstract
In order to compensate the curvature of display device (2) during lamination process, according to the present invention, during applying optics bridging agent (4), carry out on-load pressure in a controlled manner to the inner cavity (20) of display by pressure control equipment (10).
Description
Technical field
Present patent application has the priority of German patent application DE 10 2,015 205 041.6, the German patent application
Content by reference be embodied in this.
Background technique
The device and display device that the present invention relates to a kind of for being laminated display device are on such laminater
Layout.In addition, the method and a kind of display according to the method production that the present invention relates to a kind of for being laminated display device fill
It sets.
In lamination display device, the optical quality of final products is important, and it is equal that the bonding agent needs to form thickness
Even layer.But this is especially difficult in the case where large display screen.For being laminated the method for display device by document US
Known to 2008/0261057 A1.
Summary of the invention
It is a kind of for being laminated the device of display device it is an object of the invention to improve.The purpose is by a kind of for being laminated
The device of display device is realized comprising: for accommodating the receiving equipment of display device, the receiving equipment includes for putting
Set the placement region of display device；With the pressure control equipment for generating controllable pressure, wherein the receiving equipment is described
There is at least one pressure compensation opening, the pressure compensation opening can be by means of at least in pressure-loaded state in placement region
The pressure control equipment is loaded by controllable pressure, so that the display device for being placed on placement region is controllable in side
Pressure-loaded, for compensating the bending of the display device as caused by the weight of display device.
Core of the invention is that structural belt has the dress of the receiving equipment for accommodating display device and pressure control equipment
It sets, wherein the receiving equipment has at least one pressure compensation opening, the display being placed in placement region in placement region
Screen can carry out on-load pressure in side via the hole.
In particular, described device is used to be laminated the display device with cover board, especially cover sheet, especially touch panel.Especially
It, is used for the binder by means of applying in liquid form and thin slice and display screen is protected to bond by thin slice, especially.This is also referred to as
Optics connection.
According to the present invention it is known that the bending also due to gravity can be compensated by display screen side on-load pressure.In particular,
The gravity (it causes the display screen to be bent) that may be implemented to act on downwards by controlling pressure is applied to institute with from side
State the balance of the power between the power of the over-voltage on display screen being reversely directed toward.
In particular, described device is used to be laminated display device, at least 20cm, especially at least 30cm, especially at least
The diagonal line of 50cm, especially at least 100cm, especially at least 150cm, especially at least 200cm.The corresponding side of placement region is long
Degree, especially at least 20cm, especially at least 30cm, especially at least 50cm, especially at least 100cm, especially at least 150cm, especially extremely
Few 200cm.
In particular, the display device may include liquid crystal display (Liquid Crystal Display Panel, LCD
Panel).The display may include the film and/or optical conductor that other coatings, such as brightness or contrast are reinforced.It is described
Display device it is different be laminated together also referred to as display screen heap (display screen stacking).
It can produce and can control until 2*10 by means of pressure control equipment4The over-voltage of Pa.It especially can be described in continuous control
Pressure.It can especially be controlled with being better than the accuracy of 10Pa.Especially realize apply connecting material and and then be laminated with
Pressure control during the cover board of the type, the gravity of the additional connecting material are balanced by adherence pressure.
The receiving equipment is especially constructed like this, so that the equipment can be with side with controllable, especially adjustable
In pressure-loaded to the display device of the placement.
According to an aspect of the present invention, the receiving equipment in addition to surround at least one pressure compensation opening and it is optional at least
Except one pressure-loaded hole, gas-tight seal closed inner cavity outward is also surrounded.The storing apparatus is especially constructed like this, is made
It obtains it and surrounds inner cavity together with the display device being placed as shown in placement region, especially airtightly surround inner cavity outward.
According to other aspects of the invention, it arranges in the placement region for applying the close of gas-tight seal display device
Seal agent.This realization particularly simply produces hermetically arranges display device on storing apparatus.
It may be used as sealant by means of the weld seam that distributor applies.It especially can be in shown placement region around cloth
Set the sealant.The interior zone for being enclosed in the plane for being parallel to the placement region extension can especially be limited.
It can also be in the placement region around arrangement rubber sealant and by means of mechanical force as sealant
On fixed placement device.In addition, display device can be fixed around the band for apparatus for placing is utilized.
According to an aspect of the present invention, the placement region forms circular frame, on frame or in the frame may be used
To arrange the display device.The placement region can be formed simultaneously herein for keeping, particularly for being aligned described show
The mechanical holding device of showing device.
According to other aspects of the invention, the pressure control equipment is configured to the adjusting at least one sensor
Equipment.This is realized, not only can control the pressure (feedforward control) but also adjustable feedback.Pressure can be matched accurately as a result,
It is corresponding to require.The especially described pressure can depend on the amount for the optics bridging agent being applied in the display device, especially weigh
Amount is to adjust.
Especially noncontacting proximity sensor, especially range finder may be used as sensor.Herein can especially optical sensor,
Especially laser sensor.Other sensors equally can also be with.Especially construct and arrange like this sensor, so that by
In the curvature that it detects the display device.The sensor especially in a manner of transmitting data with pressure control equipment phase
Even.
According to other aspects of the invention, this includes display device, is arranged on laminater according to foregoing description.
Here, the display device has frame, display inner cavity is surrounded, the inner cavity is airtight relative to front and is carrying on the back
There is at least one display pressure compensation opening on face.The display inner cavity via it is described at least one display pressure compensation opening by
It can be loaded with controllable pressure in the pressure control equipment.
According to an aspect of the present invention, the placement region of the storing apparatus matches the display device that need to be laminated.Especially
The size for the display device that the matching of its described device need to be laminated.The placement region is especially constructed like this, so that the display
Device can be placed into the placement region in circular fringe region.The especially described placement region has external dimensions, should
Size is substantially corresponding with the external dimensions of the display device.
The display device especially is arranged in shown receiving equipment like this, so that it is collectively formed and airtight is outward
System.In particular, the inner cavity of the storing apparatus and the inner cavity of the display device form outside hermetically sealed system, which exists
It is loaded by means of the pressure control equipment with controllable pressure on the pressure-loaded hole for accommodating equipment.
According to other aspects of the invention, the display device has planar substrates, which has central area and side
Edge region, wherein the central area is lacking benefit when arranging the fringe region in the placement region for accommodating equipment
Sink at least 100 μm in the case where repaying measure relative to the fringe region.
It is interpreted as herein, the placement region is parallel to the horizontal line alignment.The central area is opposite with the side
Edge region is sunk due to the gravity being applied in the substrate.It is described maximum sinkage can be in particular at least 200 μm, especially
It is at least 300 μm, in particular at least 500 μm, in particular at least 1mm, in particular at least 2mm, in particular at least 5mm, in particular
At least 10mm, in particular at least 15mm, in particular at least 20mm.
The substrate is connected with the frame in the fringe region relative to front is airtight.
The substrate especially can be LCD screen.
Other purposes of the invention are, are modified to lamination display device, particularly for the method for optics connection.
The purpose is realized by the method with following step:
Device according to foregoing description is provided；
It places in display device to the placement region,
Wherein, the display device have frame, surround display inner cavity, relative to front airtightly closing and
There is at least one display balance pressure port on the back side；
Apply on optics bridging agent to display device；
Wherein, the display inner cavity is controlled during applying the optics bridging agent by means of the pressure control equipment
System ground carrys out on-load pressure；
It places on cover board to the optics bridging agent；And
Solidify the optics bridging agent.
Core of the invention is, compensates, especially prevents the bending of display by controlled unilateral on-load pressure.
According to an aspect of the present invention, the display inner cavity can come load in the application optics bridging agent
Pressure.Thus, it is possible to compensate the self weight of the display device.Especially this helps to apply the optics company with uniform thickness
Connect the coating of agent.
It especially can be adjusted before applying the optics bridging agent like this, especially adjust the pressure, so that
The display device is not sunk, and has plane surface.
Other aspects according to the present invention, the pressure remain unchanged during solidifying the optics bridging agent.The pressure
Especially at least 20 seconds, especially at least 5 minutes, especially at least 30 minutes, especially at least 2 hours can be kept during curing, especially
Its at least 4 hours, especially at least 8 hours, especially at least 12 hours, especially at least 24 hours constant.
According to an aspect of the present invention, the light being applied in the display is depended on during applying the optics bridging agent
The amount of bridging agent, especially its weight controlled system are learned, is especially adjusted, is especially continuously adjusted and improves the pressure.Alternatively exist
This, the pressure can also be stepped up when applying the bridging agent.
Preferably the method includes following method steps: by improve pressure come balance due to the connecting material and/
Or the increased weight of the cover board.
The optics bridging agent is applied in the display device in liquid condition.Applying the optics bridging agent to institute
When stating in display device, this especially has from the viscosity in about 100mPas to 10000mPas range, especially from about
In the range of 300mPas to 3000mPas, especially 500mPas to 1000mPas.
It is preferred that optics bridging agent is applied to the amount in the display device so that especially the coating of construction uniform thickness it
Afterwards, the thickness of the optics bridging agent is just corresponding with the height of the frame of the display device, the frame along perpendicular to
The direction of the upper surface of the display device has the height, i.e., the described frame is prominent in the upper front maximum of the display device
Play the height.In other words, the volume of the optics bridging agent of the application is just with described in the display device and the lid
The volume of air gap between plate is corresponding.The volume of the optics bridging agent can be greater than the air gap with a small amount of deposit volume
Volume.It therefore ensures that, the air gap between shown display device and the cover board is filled out by the optics bridging agent completely
Full, when placing on the cover board to the display device, optics bridging agent is not spilt over.Especially the optics of the spilling is connected
The amount of agent is restricted in the amount of the deposit volume.
It in principle can also be with the optics bridging agent is applied in the display device with multiple coatings.
According to other aspects of the invention, it is adjusted like this in the display inner cavity during applying the optics bridging agent
In pressure so that the curvature of the display device be less than maximum preset limiting value.The curvature of the display device exists
Here it is interpreted as maximum flexion.It can especially be adjusted and be reduced by means of pressure, especially compensated, is especially fully compensated by described aobvious
The bending of the display device caused by the weight of showing device and/or the optics bridging agent.This causes as a result, in the aobvious of completion
Show that the coating of the optics bridging agent in system has uniform thickness.Especially it has particularly up to 5mm, particularly up to
2mm, particularly up to 1mm, particularly up to 500 μm, particularly up to 300 μm, particularly up to 200 μm, particularly up to 100 μm, especially
50 μm of highest, particularly up to 30 μm, particularly up to 20 μm, particularly up to 10 μm of thickness fluctuation.Thus described complete is improved
Display system optical characteristics.
According to other aspects of the invention, the cover board for being placed on the optics bridging agent is protected by bringing device
It holds and is equipped with preset curvature.
Thus it can realize, the cover board is placed on the optics bridging agent in central area first and opens therefrom
Begin to decline, especially sink.The cover board can also be begun to decline from side onto the optics bridging agent.Thus, it is possible to reliable
Avoid the air inclusion between the cover board and the optics bridging agent.
The especially described cover board can be kept by the bringing device like this, so that it does not apply additional gravity described in
On optics bridging agent or display device under it.
In order to place on the cover board to the optics bridging agent, can be set from 2 minutes to 60 in minute range, especially
It is from 5 minutes to 40 in minute range, especially from 10 minutes to 30 in minute range, especially in minute model from 12 minutes to 15
Duration in enclosing.It may insure high accuracy by slowly placing the cover board.
According to an aspect of the present invention, thermal process is set in order to solidify the bridging agent, is especially heated to arrive at 40 DEG C
Temperature in 60 DEG C of ranges.Alternative curing method equally for example can irradiate activation or solidification by means of ultraviolet light.
It is arranged according to other aspects of the invention, (optics should be connected over this range to limit the range
Agent is connect to be applied in the display device) at least one barrier need to be applied, especially to institute in the form of keeping off bank or gear bank system
It states in display device, especially on same frame.The especially described gear bank system can be configured to interior gear bank and outer gear
Double gear bank systems of bank.Interior gear bank especially described herein can have channel or balance hole for the optics bridging agent.It is described
Outer gear bank also can have corresponding channel or balance hole.Known to, it is advantageous that the balance hole can at targetedly position,
Such as realized at angular region because like this can will likely the bubble of generation press outward via hole.In addition, extra bridging agent
It can be leaked out outward by the hole.Known to, it can be beneficial that it is applied to the mistake of the determination of the bridging agent in the display device
Surplus amount.Excess quantity can especially be in the model from 0.1% to 10% of the total amount for the bridging agent being applied in the display device
In enclosing, especially in the range from 0.3% to 5%, especially in the range from 0.5% to 3%.It is preferred that superfluous bridging agent
Absolute magnitude is highest 1L, particularly up to 100ml, particularly up to 50ml.It is preferred that the amount highest like this and shown interior gear bank with
The volume in range between the outer gear bank is equally big.
Other purposes of the invention are, improve display device.The purpose is filled by the display produced according to the method
It sets to realize.
In particular, there is the bridging agent coating with uniform thickness according to the display device of the method production.The connection
The thickness of agent coating has particularly up to 5mm, particularly up to 2mm, particularly up to 1mm, particularly up to 500 μm, particularly up to 300
μm, particularly up to 200 μm, particularly up to 100 μm, particularly up to 50 μm, particularly up to 30 μm, particularly up to 20 μm, especially most
High 10 μm of maximum fluctuation.
The especially described display device can have at least 20cm, especially at least 50cm, especially minimum 100cm, especially at least
150cm, especially minimum 200cm, especially minimum 250cm, especially minimum 300cm, the diagonal line of especially minimum 400cm.
Due to the uniformity of the thickness of the bridging agent coating, the display device has improved optical characteristics.
Detailed description of the invention
The other details of the present invention, feature and advantage are obtained by the description of embodiment with reference to the accompanying drawings.Wherein:
Fig. 1 shows that display device is arranged in schematical section on laminater before by pressure-loaded in display inner cavity
Face figure,
Fig. 2 show according to Fig. 1, display inner cavity by compensation on-load pressure after diagram,
Fig. 3, which is shown in, applies double gear bank system rear indicators view seen from above,
Fig. 4 shows diagram according to fig. 2, after applying on optics bridging agent to display device,
Fig. 5 shows according to Fig. 4, the diagram when placing on cover board to optics bridging agent, wherein section in Fig. 5 along
Extended in Fig. 3 with the line of VV label, and
Fig. 6 shows according to Fig. 4, the diagram after placing cover board, wherein the section in Fig. 6 along in Fig. 3 with
The line of VIVI label extends.
Specific embodiment
Next, illustrating the structure of the apparatus according to the invention 1 for being laminated display device 2 first.Device 1 is especially
For cover board 3 is be bonded by means of the optics bridging agent 4 applied in liquid form with display device 2.This is also referred to as optical junction.
The display screen large-scale particularly for engagement of device 1.The device has greater than 20cm, especially greater than particularly for engagement
30cm, especially greater than 50cm, especially greater than 100cm, it especially about 150cm, especially greater than 200cm, is especially greater than 250cm, is outstanding
Its cornerwise display screen for being greater than 300cm, especially about 350cm, especially greater than 400cm.
Display device 2 is simplifiedly also referred to as display screen.It especially includes (the Liquid Crystal of liquid crystal display 5
Display,LCD).Next it will be described in greater detail.
Cover board 3 more particularly to cover sheet are especially in cover glass form.Cover board 3 can also be made of plastics.It is especially
It is transparent, especially at least partially transparent.Cover board 3 is also possible to touch panel.
Optical bridging agent 4 is simplifiedly also referred to as optical bond.Two-component silicone bonding agent can be used as optics bridging agent
4.Single-component silicone, polyurethane, epoxy resin derivant and acrylate also are used as optical bridging agent.
Device 1 includes the receiving equipment in 6 form of bracket, for accommodating display device 2.Bracket 6 has aobvious for placing
The placement region 7 of showing device 2.Here, display device without frame, only can also be placed in placement region 7 as LCD panel.
Bracket 6, especially placement region 7 are matched with the display device 2 that need to be engaged.Bracket especially has following size,
It is matched with display device 2 need to being laminated, need to engaging.
Placement region 7 forms the circular frame of the display device 2 for that need to be laminated.Display device 2 is especially mechanically
Fixation, especially locking are on the frame 6.This can be connected by the bolt between display device 2 and bracket 6 and be realized.Display dress
Setting 2 can also clampingly fix on the frame 6.
Bracket 6 has pressure-loaded hole 8.By pressure-loaded hole 8, available pressure loads the inner cavity 9 of bracket 6.
In order to use the inner cavity 9 of pressure-loaded bracket 6, it is equipped with pressure control equipment.Here, be related to pressure generate and control set
It is standby.By means of pressure control equipment 10, controllable pressure can produce.
According to a kind of alternative embodiment, the embodiment is not shown in figures, for generating and controlling pressure
Pressure control equipment 10 be arranged in the inner cavity 9 of bracket 6 or directly with bracket 6 and be connected.In this case, it can abandon pressing
Power loading hole.
In placement region 7, bracket 6 has multiple pressure compensation openings 11.Bracket 6 has extremely especially in placement region 7
A few this pressure compensation opening 11.
Pressure compensation opening 11 and at least one pressure-loaded hole 11 it is in flow communication in.
Next, the structure of the principle of display device 2 is described in more detail.
LCD5 is arranged in frame 12.
LCD5 forms the substrate of plane, which extends along the direction perpendicular to face normal 13.Next it is understood that dress
It sets and is orientated in this way, prolong so that face normal 13 is parallel to vertical direction in the case where display device 2 is placed in placement region
It stretches.
LCD5 has fringe region 14 and central area 15.As schematically showing in Fig. 1, central area 15 exists
Lack sagging relative to fringe region 14 in the case where indemnifying measure.It central area 15 especially can be sagging relative to fringe region 14
Greater than 100 μm, especially greater than 200 μm, especially greater than 300 μm, especially greater than 500 μm, especially greater than 1mm, especially greater than 5mm,
Especially greater than 10mm, especially greater than 15mm, especially greater than 20mm.
On the front 16 of display device 2, LCD5 by sealing element 17, especially circular sealing element 17 airtightly with frame
12 are connected.Sealing element 17 can be formed by the liquid of high viscosity, be applied on the front 16 of display device 2.It is showing
In the region at the back side 18 of device 2, frame 12 has multiple pressure compensation openings 19.
Therefore frame 12 surrounds display inner cavity 20, gas-tight seal towards front 16 and overleaf have at least one on 18
A pressure compensation opening 19.
In arranging arrangement on the device 1 according to the display device 2 of Fig. 1, show inner cavity 20 via at least one
Pressure compensation opening 19 is loaded by means of pressure control equipment 10 with controllable pressure.
In the inner cavity of display device 2 20, multiple light sources are disposed at the rear of LCD panel and/or strengthen the thin of contrast
Film 21.Optical conductor 22 is disposed on the back side of film 21.In inner cavity 20, it can also be disposed with other compositions of display device 2
Component.
In edge region 14, frame 12 covers LCD5.Covering part is preferably less than 3cm, especially less than 2cm, especially
Less than 1cm.
The sealant 23 not shown more accurately in the accompanying drawings is disposed in placement region 7.Apply by distributor
The band of adhesive tape, the seal rubber of insertion or installation can be used as sealant 23.Sealant 23 is especially around arrangement.Its with hang down
Directly closed region is adjacent in the plane of face normal 13.
Pressure control equipment 10 is connected via penstock road 24 with pressure-loaded hole 8.
On penstock road 24 and/or it can be disposed in the region in pressure-loaded hole 8 other pressure control valve,
Such as throttle valve, pressure difference measurer, check-valves etc..
Pressure control equipment is connected in a manner of transmitting data with sensor device 25.
Sensor device 25 include at least one be used for obtain LCD panel 5, especially its front 16 curvature sensor.
Sensor can be related to rangefinder, especially interference sensor.Especially laser sensor or ultrasonic sensor can be used as sensor.
The curvature of LCD panel 5 can be measured by triangulation.
In addition, device 1 may include the sensor for detecting the interior pressure in the inner cavity 9 for being present in bracket 6 at that time.The biography
Sensor can be integrated into pressure control equipment 10.
Sensor device 25 includes at least one this sensor.Sensor for obtaining curvature preferably comes in this way
Arrangement, so that it is obtained in central area 15, especially in the region of center, i.e. in the maximum region of the curvature of LCD5
LCD5 curvature.
According to a kind of alternative embodiment, sensor device 25 includes multiple sensors, by means of the bending of its LCD5
Degree can be in different positions, especially obtain with being not dependent on position.
Together with sensor device 25, pressure control equipment 10 forms pressure adjustment device.
According to a kind of alternative embodiment, device includes multiple for accommodating the bracket 6 of display device 2.Device 1 is especially
It may include two, three, four, six, nine or multiple brackets 6.This makes can side by side, i.e. while being laminated multiple respective numbers
Display device 2.As long as the quantity for the display device 2 that need to be laminated can be clamped independently, i.e. less than the quantity of the bracket 6 of device 1
Each bracket 6 is clamped by pressure control equipment 10 respectively.For this purpose, being equipped in penstock road 24 and/or pressure-loaded hole 8
Corresponding valve.
It will be illustrated next for by display device 2 and the method laminated together of cover board 3.
It provides first according to device 1 explained above.
Then, display device 2 is placed in placement region 7.Here, the frame 12 of display device 2 reclines to be arranged in and put
Set the sealant 23 on region 7.Therefore frame 12 is formed together external airtight, closed system with bracket 6.
Display device 2 is mechanically anchored at bracket 6.Display device is especially fixed in this way, so that it is in bracket 6
Chamber 9 is constant with bracket holding position in its region with the abutment face of bracket 6 in the case where being loaded by over-voltage.
As long as the inner cavity 9 of bracket 6 especially shows that inner cavity 20 is not loaded by over-voltage, LCD5 is since its weight Wx is in
It is slight sag in heart district domain 15.It is sagging in region at its center to be greater than 100 μm, especially greater than 200 μ according to the size of LCD5
M, be especially greater than 300 μm, especially greater than 500 μm, especially greater than 1mm, especially greater than 2mm, especially greater than 5mm, especially greater than
10mm, especially greater than 15mm, especially greater than 20mm.
In order to compensate for the gravity of LCD5, suitable over-voltage p is generated in display inner cavity 20 by pressure control equipment 10x。
The situation is schematically shown in Fig. 2.
According to a kind of alternative, certain pressure p of the pressure-loaded hole 8 by the weight depending on LCD5 thusxAdd
It carries.
The over-voltage p of loaded and displayed inner cavity 20xEspecially correspond essentially to the weight W of LCD panel 5xDivided by its area ALCD, px=
Wx/ALCD。
The gross pressure of loaded and displayed inner cavity 20, then by over-voltage pxWith environmental pressure puSum show that environmental pressure is particularly present
In the front 16 of LCD5.Environmental pressure puThen correspond to atmospheric pressure.As long as being laminated in negative pressure cavity, especially vacuum chamber,
Then environmental pressure puIt is then lower.
According to another alternative, the pressure p for loaded and displayed inner cavity 20 is not set at the beginningx, but adjust in this way
Section especially increases, until the maximum flexion of LCD5 is less than preset, maximum reliable critical value before.The critical value is especially
Less than 1mm, especially less than 500 μm, especially less than 300 μm, especially less than 200 μm, especially less than 100 μm, especially less than 50 μm,
Especially less than 30 μm, especially less than 20 μm, especially less than 10 μm, especially less than 5 μm, especially less than 3 μm, especially less than 2 μm, it is outstanding
It is less than 1 μm.
After contact surface between seal frame 12 and bracket 6, it is necessary to ensure that the contact between frame 12 and LCD5
Face is similarly circumferentially gas-tight seal by sealing element 7, because cannot being designed to ensure that by display device 2.Sealant thus
Circumferentially, it is applied on LCD5 below frame 12 especially along the interior seamed edge of frame 12, especially.Sealant then can be by means of
Distributor applies.Depending on the preset height of height need to overcoming, by frame 12, then sealant can be weighed each other with multicoat
Folded mode applies, to realize the minimum thickness in the maximum situation of sealant height.
It is arranged to according to another alternative, when optical bridging agent 4 to be applied on LCD5, then shows inner cavity 20
Just by pressure-loaded.
It is arranged to according to a kind of advantageous embodiment, before applying optical bridging agent 4, need to be applied for being limited in
The limitation system in the region of optical bridging agent 4 should be applied in display device 2.According in Fig. 3 to modification shown in Fig. 6, limit
System processed includes having double gear bank structures of interior gear bank 26 and outer gear bank 27.
Keep off the baffle that bank 26,27 is used as optical bridging agent 4.It can be applied by means of distributor.It is especially applied to
On frame 12.
Gear bank 26 limits and limits bonding plane, i.e. display device 2 and connects with the lamination of cover board 3, i.e. Nian Jie, i.e. optics in especially
The region of conjunction.
Air inclusion in lamination process in order to prevent, interior gear bank 26 have outlet opening 28.Outlet opening 28 is settable
At at a distance of uniform spacing.
It not only can remove the air being mingled with by outlet opening 28 but also optical bridging agent 4 can be removed from laminating area.
The uncontrolled disengaging of optical bridging agent 4 in order to prevent is respectively disposed with the region of outer gear bank 27 in the region of outlet opening 28.
Outer gear bank 27 can be limited to the region of outlet opening 28 as schematically shown in Fig. 3.According to a kind of alternative,
Outer 27 continuous structure of gear bank.It, can in multiple steps must be overlappingly in order to realize that when keeping off bank width minimum, its height is maximum
Apply gear bank.The height that the need of gear bank reach depends on the desired coating layer thickness of bridging agent herein.
In the next step, optical bridging agent 4 is applied in display device 2, especially on the front of LCD5.
Optical bridging agent 4 is especially applied on the central area 5 of LCD5.The amount for the bridging agent 4 that need to apply is come true in this way
It is fixed, that is, so that volumetric region limited by the frame 12 and interior gear bank 26 of bracket 6, on LCD5 completely by bridging agent 4 come
Filling.Preferably, will apply on slightly more bridging agents 4 to LCD5 than required for.It therefore ensures that, in LCD5 and cover board 3
Between intermediate cavity filled completely by bridging agent 4.The amount of additional bridging agent 4 is in the total of the bridging agent 5 being applied on LCD5
Between 0.1% to 10% region of amount, between especially 0.3% to 5% region, between especially 0.5% to 3% region.
From the point of view of absolute value, the amount of additional bridging agent 4 is up to 500ml, is especially up to 100ml, is especially up to
50ml, especially it is up to 10ml.During applying optical bridging agent 4, display inner cavity 20 by means of pressure control equipment 10 by
To controlled pressure-loaded.Inner cavity 20 is especially in this way by pressure-loaded, so that acting on the volume of the optical bridging agent 4 on LCD5
Outer weight is offset.
Over-voltage of the continuously adjustable in display inner cavity 20 thus.Also it is possible that sublevel improves in display inner cavity 20
Pressure.
Independently with accurate change curve, the pressure in display inner cavity 20 is preferably adjusted in this way, so that complete
After applying optical bridging agent 4, the front of LCD5 is pre- before there is maximum curvature, maximum curvature maximum can reach
If, reliable critical value.Reliable critical value is maximum 2mm, maximum 1mm, be especially less than 500 μm, be especially less than 300 μm,
Especially less than 200 μm, especially less than 100 μm, especially less than 50 μm, especially less than 30 μm, especially less than 20 μm, especially less than 10
μm, especially less than 5 μm, especially less than 3 μm, especially less than 2 μm, especially less than 1 μm.Therefore, apply optical bridging agent 4 it
Afterwards, especially after to display inner cavity on-load pressure, the front 16 of LCD5 has plane, horizontal alignment surface.Thus real
Existing, optical bridging agent 4 has coating 29 in homogeneous thickness especially after putting cover board 3.Coating 29 is after putting cover board 3
The maximum gauge fluctuation especially having, is up to 1mm, is especially up to 500 μm, is especially up to 300 μm, is especially up to
200 μm, be especially up to 100 μm, be especially up to 50 μm, be especially up to 30 μm, be especially up to 20 μm, be especially up to
10 μm, be especially up to 5 μm, be especially up to 3 μm, be especially up to 2 μm, be especially up to 1 μm.
It may also desire to after applying optical bridging agent 4 and before real lamination process, optics bridging agent 4 exists
Coating in central area has the thickness bigger than in the edge region.Therefore ensure that, cover board 3 first in central area with
Optical bridging agent 4 contacts and optical bridging agent 4 is mobile towards fringe region when being placed into display device 2.Pass through conjunction
Suitable control ensured by means of the pressure that pressure control equipment 10 applies, the front 16 of LCD5 formed herein plane, level takes
To surface.
In inner cavity 20 after applying optical bridging agent 4 final effective pressure pyEspecially it is equal to Wy/ALCD, wherein Wy
The sum of the weight of very approximate LCD panel 5 and the total weight for the optical bridging agent being applied on LCD panel.Little deviation is attributable to
The fringe region of the overlapping of frame 12 and/or extra bridging agent 4.
After being fully applied in display device 2 by optical bridging agent 4, cover board 3 is placed into optical bridging agent 4
On.Here, cover board 3 is kept by apparatus for placing not shown in figures.It can ensure that by means of apparatus for placing, cover board 3 is being put
Do not apply when setting or only applies on scheduled gravity to optical bridging agent 4.In principle it is possible that local pressure short time liter
Flowing that is high and therefore accelerating bridging agent.
In addition, cover board 3 can by means of for applying optics bridging agent 4 bringing device, it is as shown in fig. 5 as,
It is arranged to that there is scheduled curvature.Thus it can ensure that, in cover board 3 and optical bridging agent 4 in central area or fringe region
In first contact occur at the position of restriction.By the further sinking of cover board and the reduction of its curvature, cover board 3 can
Towards fringe region or from the side of fringe region towards the opposite flank in other region and bridging agent coating since central area
29 are connected.Be press-connected pressure required for agent proportionally and herein depend on bridging agent viscosity and coating layer thickness
Ground, the pressure of corresponding matching in the lumen.By interior gear bank 26, it can be achieved that the end of the restriction of contact.Below it is understood that by
The bridging agent 4 of flowing is caused not or at least not go out interior gear bank 26 with very big amount overflow in extruding, but by due to interior
It keeps off the limitation that bank 26 is formed and reaches static.
The cover board 3 can protrude past the display device 2 with side.
Then, solidify the optics bridging agent 4.Curing time is at least 20 seconds, in particular at least 5 minutes, in particular extremely
Few 30 minutes, in particular 1 hour, in particular at room temperature about 12 hours, in particular in the range from 40 DEG C to 60 DEG C
Temperature on kept for about 2 hours.Depending on alternatively curing type can be according to bridging agent and/or other requirements, such as by
Activation or solidification are irradiated in ultraviolet light.
During the optics bridging agent 4 solidification, the pressure in display inner cavity 20 is remained unchanged.
After shown optics bridging agent 4 is fully cured, the display of the display device 2 and cover board common form completion
System 30.Then the pressure in the inner cavity can reduce and the display system 30 is far from the placement region 7.
The display system 30 includes the bridging agent coating 29.The bridging agent coating 29 has uniform thickness.It closes
Foregoing description is referred in the thickness maximum fluctuation of the bridging agent coating 29.
The display system 30 especially has at least 30cm, especially at least 50cm, especially at least 100cm, especially at least
150cm, especially at least 200cm, especially at least 250cm, especially at least 300cm, especially at least 350cm, especially at least 400cm's
Diagonal line.The size of the substantially described display system, especially its diagonal line can be selected arbitrarily.However it is described according to the present invention
Method be especially shown in its advantage in the case of large scale.The full-size of the display system 30 is substantially unrestricted.It is logical
Often less than 100m.
Next it rephrases the statement again and describes different aspect of the invention and alternative.
Especially in the case where large scale display device 2, suitable indemnifying measure not curved for the LCD.Benefit
And it according to the method for the present invention can be with optics bridging agent 4 is applied to completely flat for optical junction with the apparatus according to the invention 1
In the substrate in face.Thus, it is possible to improve the uniformity of the bridging agent coating 29.Thus, it is possible to improve the display system 30
Optical characteristics.
By airtightly sealing the LCD5 on the one hand in shown frame 12 and on the other hand in the placement region 7
On the frame 12, the display inner cavity 20 can be made airtightly to be outwardly closed off.
The pressure of controllable restriction can be drawn by means of the pressure control equipment 10 via the pressure-loaded hole 8
Enter into the display inner cavity 20.
It can adjust like this, the pressure in shown display inner cavity 20 especially be adjusted in this wise, so that the display
The front 16 of device 2 is compensated by the over-voltage in the inner cavity 20 due to the curvature of gravity.The over-voltage is especially located
In the range from 10Pa to 20000Pa.Its especially can for more than 100Pa, especially more than 200Pa, especially more than 300Pa,
Especially more than 500Pa, especially more than 1000Pa, especially more than 5000Pa, especially more than 10000Pa, especially more than 20000Pa.
By adjust the over-voltage in the display inner cavity 20 can occur in from it is outer, i.e. be downwardly oriented on LCD5
Power and balance from the power between opposite force that is interior, being upwardly oriented.
The display device 2 is arranged in like this in the placement region 7 of the bracket 6, is allowed to, in the LCD5
In the following, especially generating the pressure of restriction in the display inner cavity 20.It can by the pressure adjusted in the display inner cavity 20
To compensate the gravity of the LCD5 and thus prevent its bending.It especially may be implemented by loading the display inner cavity 20, institute
The front 16 for stating LCD5 is plane.
The curved gravity of the LCD5 is caused to increase when applying the optics bridging agent 4.It is therefore arranged according to the present invention,
Increased the pressure in the display inner cavity 20 by means of the pressure control equipment 10 in this wise during applying the binder
Power, so that permanently ensuring flat surface.The pressure that can be especially continuously adjusted in the display inner cavity 20.In order to adjust
It is described display inner cavity 20 in pressure by means of the sensor device 25, the curved of the LCD5 is for example measured by means of laser
Curvature.Especially it is arranged and adjusts the pressure like this, so that the limiting value one of the curvature highest of the LCD5 and maximum preset
Sample is high.
Once the coating 29 of the bridging agent 4 being applied on the LCD5 realizes the desired coating layer thickness, then
The pressure, the especially described air pressure are maintained at constant in the display inner cavity 20.The pressure-loaded hole 8 can be closed to this.
It can continue to monitor and adjust the pressure in the display inner cavity 20.Especially in engaging process when using high viscosity bridging agent
Period required higher pressure can squeeze out the bridging agent towards edge.The internal pressure must be adjusted in this case is more than
Apply the bridging agent.
To place the cover board 3, this is equipped with slight curvature by means of bringing device.It therefore ensures that, in shown cover board 3
First between the optics bridging agent 4 contacts and occurs in the central area 15.By the cover board 3 further under
Drop, the binder are gradually connected relative to the fringe region with the cover board 3.The especially described underground long like this of cover board 3
Drop, until it is placed on the interior gear bank 26.Therefore, the interior gear bank 26 limits the terminal that the cover board 3 declines.
The cover board 3 can be placed into the coating 29 with the optics bridging agent 4 from side towards opposite side in principle
On.
Assigning process is described in detail again below, that is, applies the optics bridging agent 4.
Less viscous binder is used as optics bridging agent 4.This is assigned directly in the display screen surface in liquid form,
On the front 16 of the i.e. described LCD5.If the case where having the display screen of bias light, seals display screen in advance.It is possible thereby to prevent
The bridging agent 4 may pour into and thus prevent damage display screen.Thixotropic liquid is used in order to seal, due to its characteristic
Although being immersed in the gap that need to be sealed during application by the shearing force generated herein, in addition, will not be further
It is immersed in display screen.
Here it is shown that thixotropic liquid, in the absence of stress viscosity between 200kPa/s to 800kPa/ simultaneously
And in the case where compression viscosity between 5kPa/s to 40kPa/s.
In order to limit the region, the optics bridging agent 4 should be applied on the area, barrier is applied to the display
On device 2.The especially described barrier is applied in the display device 2 except visible region later.Barrier includes at least one
A, preferably two gear banks 26 keep off in 27, one and keep off bank 27 outside bank 26 and one.The gear bank 26,27 is derived from the touching of high viscosity
Denatured liq.Thus on the one hand simplify the assigning process and on the other hand guarantee the shape of the gear bank after the distribution
Shape stability prevents to be lost.Therefore, it is optional rather than required for solidifying the gear bank.
The interior gear bank 26 limits and limitation adhesive surface.The interior gear bank 26 has outlet opening 28, so as in bonding process
Period prevents air inclusion.The air surrounded can be not only leaked out by the outlet opening 28, but also optics company can be leaked out
Connect agent.The outflow that the outer gear bank 27 prevents the optics bridging agent 4 uncontrolled.
Claims (10)
1. one kind is for being laminated the device (1) of display device (2) characterized by comprising
1.1. for accommodating the receiving equipment (6) of display device (2), the receiving equipment includes for placing display device (2)
Placement region (7)；With
1.2. for generating the pressure control equipment (10) of controllable pressure,
1.3. wherein, the receiving equipment (6) has at least one pressure compensation opening (11), institute in the placement region (7)
Stating pressure compensation opening can be added by means of the pressure control equipment (10) by controllable pressure at least in pressure-loaded state
It carries, so that the display device (2) for being placed on placement region (7) is loaded in side by controllable pressure, for compensating due to aobvious
The bending of display device (2) caused by the weight of showing device (2).
2. the apparatus according to claim 1 (1), which is characterized in that in addition to pressure compensation opening described at least one (11) and
Except pressure-loaded hole (8), the other parts for accommodating equipment (6) surround inner cavity (9) hermetic closed outward, via described
Receiving equipment and the pressure control equipment (10) described in pressure-loaded hole are in flowing connection.
3. device (1) according to claim 1 or 2, which is characterized in that
The sealant (23) for applying display device (2) gas-tight seally is disposed in the placement region (7).
4. device (1) according to claim 1 or 2, which is characterized in that
The pressure control equipment (10) is configured to the adjustment equipment at least one sensor (25).
5. the arragement construction of display device (2) is arranged on laminater according to any one of claim 1 to 4 (1),
It is characterized in that,
5.1. the display device (2) has frame (12), which surrounds display inner cavity (20), and the display inner cavity is relative to just
Face (16) is gas-tight seal and overleaf has at least one display pressure compensation opening (19) on (18),
5.2. wherein, the display inner cavity (20) is via display pressure compensation opening (19) described at least one by means of the pressure
Control equipment (10) can be loaded by controllable pressure.
6. arragement construction according to claim 5, which is characterized in that the display device (2) has planar substrates, the base
Bottom has central area (15) and fringe region (14), wherein the central area (15) are when putting in receiving equipment (6)
It sets when arranging the fringe region (14) on region (7) in the case where no indemnifying measure relative to the fringe region (14)
Sink at least 100 μm.
7. method of the one kind for being laminated the display device (2) with cover board (3), characterized in that it comprises the following steps:
7.1. it provides according to any one of claim 1 to 4 for being laminated the device (1) of display device (2)；
7.2. display device (2) is placed on the placement region (7),
7.2.1. wherein, the display device (2) has frame (12), which surrounds display inner cavity (20), the display inner cavity
It is gas-tight seal relative to positive (16) and overleaf there is on (18) at least one display pressure compensation opening (19)；
7.3. apply on optics bridging agent (4) to the display device (2)；
7.4. wherein, the display inner cavity (20) is set during applying the optics bridging agent (4) by means of pressure control
Standby (10) are controllably by pressure-loaded；
7.5. cover board (3) is applied on the optics bridging agent (4), and
7.6. solidify the optics bridging agent (4).
8. the method according to the description of claim 7 is characterized in that the following adjustment during applying the optics bridging agent (4)
Pressure in display inner cavity (20), so that the curvature of the display device (2) is less than preset maximum limit.
9. the method according to any one of claim 7 to 8, which is characterized in that in order to be applied to the optics bridging agent
(4) on, the cover board (3) is kept by bringing device and is equipped with preset curvature.
10. the display system (30) of method production according to any one of claims 7 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015205041.6A DE102015205041A1 (en) | 2015-03-19 | 2015-03-19 | laminating |
| DE102015205041.6 | 2015-03-19 | ||
| PCT/EP2016/056026 WO2016146832A1 (en) | 2015-03-19 | 2016-03-18 | Lamination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107428150A CN107428150A (en) | 2017-12-01 |
| CN107428150B true CN107428150B (en) | 2019-10-29 |
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ID=55586317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680016748.8A Active CN107428150B (en) | 2015-03-19 | 2016-03-18 | Laminater |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN107428150B (en) |
| DE (1) | DE102015205041A1 (en) |
| WO (1) | WO2016146832A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1956899B (en) * | 2004-05-21 | 2011-05-04 | 大日本印刷株式会社 | Substrate reception container, substrate reception body, and substrate conveyance device |
| WO2008115513A1 (en) * | 2007-03-19 | 2008-09-25 | White Electronic Designs Corp. | Enhanced liquid crystal display system and methods |
| US7924362B2 (en) * | 2007-04-20 | 2011-04-12 | Via Optronics, Llc | Bezelless display system having a display assembly with an overlay including a transparent section optically bonded to a display region with an optical layer that includes a pre-cured adhesive preform |
| DE102009022725A1 (en) * | 2009-05-26 | 2010-12-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of a solar module |
| US20130068393A1 (en) * | 2011-09-18 | 2013-03-21 | Kai-Ti Yang | Laminating equipment for touch panel |
| CN202293573U (en) * | 2011-10-19 | 2012-07-04 | 洋华光电股份有限公司 | Panel laminating device with improved structure |
| CN104093569B (en) * | 2012-02-01 | 2016-11-16 | 旭硝子株式会社 | The manufacture method of duplexer and manufacture device |
| CN103302944B (en) * | 2013-06-08 | 2016-02-10 | 上海朗华科贸有限公司 | A kind of pressing system and compression method thereof |
-
2015
- 2015-03-19 DE DE102015205041.6A patent/DE102015205041A1/en active Pending
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2016
- 2016-03-18 CN CN201680016748.8A patent/CN107428150B/en active Active
- 2016-03-18 WO PCT/EP2016/056026 patent/WO2016146832A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016146832A1 (en) | 2016-09-22 |
| CN107428150A (en) | 2017-12-01 |
| DE102015205041A1 (en) | 2016-09-22 |
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