CN101770115B - Alignment film rubbing process and device - Google Patents
Alignment film rubbing process and device Download PDFInfo
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- CN101770115B CN101770115B CN2008102475438A CN200810247543A CN101770115B CN 101770115 B CN101770115 B CN 101770115B CN 2008102475438 A CN2008102475438 A CN 2008102475438A CN 200810247543 A CN200810247543 A CN 200810247543A CN 101770115 B CN101770115 B CN 101770115B
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Abstract
The invention discloses an alignment film rubbing process and an alignment film rubbing device, relates to a method and a device for processing a liquid crystal display, and solves the problems that in the conventional alignment film rubbing process, the alignment film has uneven groove mark and low production efficiency. The embodiment of the invention comprises the following steps of: fixedly coating a film base plate which is used for forming the alignment film on a fixed device; loading a rubbing cloth on a loading device, wherein the base plate is parallel and opposite to the surface of the rubbing cloth; forming relative motion along the direction of the surface of the base plate between the rubbing cloth and the base plate; forming surface contact between the film and the flat surface of the rubbing cloth; and then separating the film from the flat surface of the rubbing cloth. The embodiment of the invention is mainly used in the process of manufacturing the liquid crystal display and the process of obtaining the alignment film by rubbing the film, such as the process of forming the alignment film on a color filter base plate and a TFT array base plate.
Description
Technical field
The present invention relates to the processing technology and the equipment of liquid crystal display device, relate in particular to the technology that in preparation liquid crystal display device process, the film that has applied is rubbed, and the equipment that friction process adopted.
Background technology
The principle of work of liquid crystal display device is: the deflection angle that is applied to the voltage change liquid crystal molecule on the liquid crystal by change, thereby control polarized light sense of rotation and polarization state, and then the control polarized light can see through polaroid or can not see through polaroid, with the change of realization liquid crystal display device show state.For example: TFT (Thin Film Transistor, Thin Film Transistor (TFT)) display panels mainly comprises colored filter substrate (CF), tft array substrate and the liquid crystal of instillation between colored filter substrate and tft array substrate, after applying voltage by the TFT circuit on the tft array substrate, described liquid crystal molecule deflects, thus the sense of rotation and the polarization state of control polarized light.
In the ordinary course of things, the arrangement of long axis of liquid crystal molecule direction is that random orientation and distribution are rambling, for the long axis direction that makes most of liquid crystal molecule can be arranged along a direction, need on two substrates, form alignment films, form groove mark on this alignment films, make the long axis direction of liquid crystal molecule to arrange regularly along the direction of groove mark with certain orientation.For the TFT display panels, need on colored filter substrate and tft array substrate, form alignment films.
The formation of alignment films comprises coated technique and friction process: wherein coated technique is to make the film that is used to form alignment films by spin coated and printing mode on the substrate after the cleaning, and wherein the material of film is a polyimide; Friction process is that the film of making is carried out friction orientation.
Friction process is in the prior art: be tied with the friction cloth that is covered with tiny fine hair and form a friction roller on the circle roller, by friction roller and be coated with relative motion between the substrate of film, make the fine hair on the friction roller rub to film surface, thereby formed the groove mark with certain orientation on film, this film with groove mark can be described as alignment films.
State in realization in the process of friction process, the inventor finds that there are the following problems at least in the prior art:
Along with the size of liquid crystal display device substrate constantly increases, because the size of substrate is bigger, make that the relative motion distance is longer between friction roller and the substrate, may cause in the friction process like this, friction roller changes with respect to the movement angle of substrate, causes the homogeneity of alignment films groove mark direction to be difficult to guarantee; Simultaneously,, do not changing under the situation of friction roller with respect to the movement velocity of substrate, needing the time of lengthening friction process, causing the reduction of production efficiency because the distance of friction roller motion is elongated.
Summary of the invention
Embodiments of the invention provide a kind of alignment film rubbing process and equipment, with the homogeneity of assurance alignment films groove mark direction, and enhance productivity.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of alignment film rubbing process comprises:
On stationary installation, fixedly be coated with the substrate of the film that is used to form alignment films, carrying friction cloth on bogey, described substrate is parallel relative state with rubbing between the cloth surface;
This technology also comprises:
(1) between described friction cloth and described substrate, forms along the relative motion of the direction of substrate surface;
(2) formation face contacts between the flat surface of described film and described friction cloth;
(3) flat surface of described film of separation and described friction cloth.
A kind of alignment film rubbing equipment comprises:
Bogey is used for carrying friction cloth;
Stationary installation is used for fixing the substrate that is coated with the film that is used to form alignment films, and described substrate is parallel relative state with rubbing between the cloth surface;
Power system is used for forming between described friction cloth and described substrate along the relative motion of the direction of substrate surface; This power system is used for also that formation face contacts between the flat surface of described film and described friction cloth, and separates the flat surface of described film and described friction cloth.
Alignment film rubbing process that the embodiment of the invention provides and equipment, when rubbing, the film on the substrate is that face contacts with rubbing between the cloth, and the surface of friction cloth is smooth, film on the substrate just can be once by the groove mark that rubs like this, and then forms alignment films.This film and the mode that employing face contacts between the cloth that rubs can guarantee that in the moment of rubbing, the direction of relative movement of the friction that film bore on the substrate is identical with speed; And the flat surface of above-mentioned friction cloth can guarantee that the friction depth of film is identical.Because in friction process and equipment that the embodiment of the invention provides, the direction of relative movement that rubs is identical with speed, and friction depth is identical, can guarantee the groove mark direction that rubs out at last and the homogeneity of the degree of depth preferably.
Simultaneously, because alignment film rubbing process and equipment that the embodiment of the invention provides, can in once the contacting of friction cloth and film, finish the friction of whole base plate upper film, for needing the long distance of friction roller motion just can finish in the prior art once to rub, the embodiment of the invention has higher friction efficiency, thereby has improved production efficiency.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the process flow diagram of alignment film rubbing process in the embodiment of the invention 1;
Fig. 2 is the schematic diagram of alignment film rubbing equipment in the embodiment of the invention 1;
Fig. 3 is the sectional view of the embodiment of the invention 1 middle regulator;
Fig. 4 is the process flow diagram of alignment film rubbing process in the embodiment of the invention 2;
Fig. 5 is the schematic diagram of alignment film rubbing equipment in the embodiment of the invention 2;
Fig. 6 is the principle of dynamics figure of alignment film rubbing equipment in the embodiment of the invention 2;
Fig. 7 is the schematic diagram of another kind of alignment film rubbing equipment in the embodiment of the invention 2.
Embodiment
The invention provides a kind of alignment film rubbing process, before rub cloth and film rub, friction cloth be need on bogey, carry, and its film and the parallel relative state in friction cloth surface the substrate that is coated with the film that is used to form alignment films will be fixed into; In concrete production run, to between friction cloth and substrate, form relative motion earlier along the substrate surface direction, allow film contact then, contact the flat surface of back separating film and friction cloth at film with the flat surface of friction cloth with the flat surface of friction cloth.
In general, the flat surface of above-mentioned mobile film and friction cloth contact and the flat surface of separating film and friction cloth all is a process that moves rapidly.
The invention provides a kind of alignment film rubbing equipment, this equipment comprises: bogey, stationary installation and power system.Described bogey is used for carrying friction cloth, and before rub cloth and film rub, friction cloth to be formed the state of surfacing on bogey, and be fixed into the surperficial parallel relative state of its film and the cloth that rubs by the substrate that stationary installation will be coated with film; In concrete production run, between friction cloth and substrate, form along the relative motion of substrate surface direction by power system, allow film contact by power system then with the flat surface of friction cloth, at film with after the flat surface of friction cloth contact, by the flat surface of the power system separating film and the cloth that rubs.
Above-mentioned power system finishes that film contacts with the flat surface of friction cloth and the flat surface of separating film and friction cloth all is a process that moves rapidly, makes the touch controls of flat surface and film of friction cloth at one in the time range of weak point.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment 1:
Carrying friction cloth is second base station in the present embodiment, and fixes by the substrate that first base station that is provided with the vacuum suction structure will be coated with film.As shown in Figure 1, the alignment film rubbing process of the embodiment of the invention comprises:
101, one whole friction cloth is attached on the table top of second base station, and the friction cloth surface after attaching is smooth, formed the flat surface of friction cloth; Because first base station is provided with the vacuum suction structure, so can will be coated with the substrate of the film that is used to form alignment films by the mode of vacuum suction is fixed on the table top of first base station, the table top of this first base station is parallel relative with described friction cloth surface, so just can be so that the film of described substrate is in parallel relative state with friction cloth surface.
102, decide direction of relative movement substrate and friction cloth between by preestablishing second base station and the first base station direction of relative movement actual when carrying out friction process, in order to obtain the different alignment films of groove mark direction, also need to adjust the side of described substrate and the angle of described direction of relative movement in the present embodiment, generally can realize the adjustment of above-mentioned angle by the angle of adjusting first base station.
If in friction process, desired alignment films groove mark direction is corresponding with the current first base station angle, then can adjust the side of substrate and the angle of described relative motion direction of motion, just can save 102 processes.
103 and move along the direction of substrate surface by driving described second base station, driving described friction cloth motion, thereby make the friction cloth of surfacing move, to form the relative motion between substrate and the friction cloth along the direction of substrate surface.
Generally speaking, above-mentioned motion should be a linear uniform motion, guaranteeing the obtaining better alignment films of homogeneity in the follow-up friction, and the speed of this linear uniform motion can be got about 8m/s.
104, in order to improve the friction quality, the area of friction cloth need be greater than the area of substrate upper film, when second base station moves to friction cloth fully during the position of the film on the covered substrate, move first base station rapidly, described film is contacted with the flat surface of described friction cloth thereby make to move on the base station of winning.
105, at film with after the flat surface of friction cloth contact, mobile rapidly once more first base station separates the flat surface of described film and described friction cloth.
Add man-hour actual, also can drive first base station earlier and move, thereby make substrate move, to form the relative motion between substrate and the friction cloth along the direction of substrate surface along the direction of substrate surface; Move to friction cloth fully during the position of the film on the covered substrate when first base station then, mobile rapidly second base station makes the friction cloth on second base station move to the flat surface and the described film state of contact of described friction cloth; And with after the flat surface of friction cloth contact, mobile rapidly once more second base station separates the flat surface and the described film of described friction cloth at film.
Corresponding to above-mentioned alignment film rubbing process, the embodiment of the invention also provides a kind of alignment film rubbing equipment, as shown in Figure 2, this equipment comprises: realize first base station 21, adjusting gear 22, first propulsion system 23 of finishing the power system function and second propulsion system 24 of stationary installation function and second base station 25 of realizing the bogey function, the alignment film rubbing equipment use-pattern that present embodiment provides is as follows:
Adding man-hour according to friction process, one whole friction cloth 1 to be attached on the table top of second base station 25 earlier, and friction cloth 1 surface after attaching is smooth, the flat surface of cloth obtains rubbing, fixedly be coated with the substrate 2 of film then by first base station 21 of realizing the stationary installation function, and the table top of this first base station is parallel relative with the flat surface of described friction cloth, and is parallel relative with the flat surface of friction cloth to guarantee film.On first base station 21 the vacuum suction structure can be set in the present embodiment, the mode by vacuum suction is fixed to the described substrate 2 that is coated with film on the table top of first base station 21 then.
In order to obtain the different alignment films of groove mark direction, also need to adjust the angle of direction of relative movement between the side of described substrate 2 and described friction cloth 1 and the substrate in the present embodiment, generally can realize the adjustment of above-mentioned angle by the angle of adjusting first base station 21, adjusting gear 22 in the present embodiment is exactly to be used to adjust the side of described substrate and the angle of described friction cloth direction of motion, and adjusting gear 22 is can realize what above-mentioned angle was adjusted by the angle of adjusting first base station.During specific implementation, the support that supports first base station 21 can be designed to rotatablely, the function of described adjusting gear 22 just can be finished by the rotational structure of support.
Adjusting gear 22 in the present embodiment is installed on the connecting rod 243 in second telecontrol equipment, and adjusting gear is realized by a cylindrical bar, adopt axial ways of connecting between this cylindrical bar and the connecting rod 243, specifically as shown in Figure 3, on the cylindrical bar 31 of realizing adjusting gear 22 functions, be provided with a fixed orifice 32, and on connecting rod 243, be provided with a plurality of pilot holes 33, adopt fixed pin 34 to connect between pilot hole 32 and the fixed orifice 33, pass the anglec of rotation that pilot hole different on the connecting rod 243 33 changes cylindrical bar 31 by register pin 34, so just the anglec of rotation that is fixed on first base station 21 on the cylindrical bar 31 be can change, the side of substrate 2 and the angle of described friction cloth 1 direction of motion realized adjusting.
After carrying out above-mentioned preliminary work, utilize the smooth friction cloth of described first propulsion system, 23 drive surfaces to move, to form the relative motion between friction cloth surface and the substrate along the direction of substrate surface.Because the friction cloth in the present embodiment is attached on the table top of second base station 25, so described first propulsion system 23 can drive described friction cloth motion by driving 25 motions of described second base station.When second base station moves to friction cloth fully during the position of the film on the covered substrate, move first base stations 21 rapidly by second propulsion system 24, make substrate on the base station 21 of winning move to the flat surface state of contact of described film and described friction cloth.At film after cloth contact with friction, once more by second propulsion system, 24 rapidly mobile first base stations, so that separate the flat surface of described film and described friction cloth.
The embodiment of the invention does not limit first base station and the concrete relative position of second base station, and generally speaking, its relative position includes but not limited to following two kinds: first base station up, second base station below; Perhaps first base station below, second base station up.
All can change the direction of motion of first base station and second base station in the above-mentioned implementation by rotating and reverse of motor.
Alignment film rubbing process that the embodiment of the invention provides and equipment, when rubbing, the film and the mode that employing face contacts between the cloth that rubs can guarantee that in the moment of rubbing, the direction of relative movement of the friction that film bore on the substrate is identical with speed; And the flat surface of above-mentioned friction cloth can guarantee that the friction depth of film is identical.Because in friction process and equipment that the embodiment of the invention provides, the direction of relative movement that rubs is identical with speed, and friction depth is identical, can guarantee the groove mark direction that rubs out at last and the homogeneity of the degree of depth preferably.
Except the homogeneity of the groove mark direction that guarantees alignment films and the degree of depth, alignment film rubbing process that the embodiment of the invention provides and equipment also have following effect with respect to prior art:
The first, because alignment film rubbing process and equipment that the embodiment of the invention provides, can in once the contacting of friction cloth and film, finish the friction of whole base plate upper film, for the friction that the distance that needs the friction roller motion to grow in the prior art just can be finished a whole base plate upper film, the embodiment of the invention has higher friction efficiency, thereby has improved production efficiency.
When the second, carrying out the friction of alignment films according to the friction process of prior art, regulate following parameter according to different needs: friction number of times, friction depth, friction roller rotating speed, friction roller radius and substrate are with respect to the translational speed in friction roller axle center; When adopting alignment film rubbing process provided by the invention and equipment to carry out the friction of alignment films, need to regulate following parameter: the movement velocity of friction number of times, friction depth, friction cloth; So the parameter that the present invention need regulate will be lacked with respect to prior art, make that the adjusting of friction process is comparatively simple.
If the 3rd adopts friction roller of the prior art, to the large-size substrate carry out friction process the time, whenever finish once friction, the friction cloth on the friction roller need have repeatedly with film and contact, causes the cloth loss that rubs bigger, and alignment film rubbing process in the embodiment of the invention and equipment, whenever finish once friction, friction cloth only needs to contact once with film, has reduced the loss of friction cloth, so also can reduce the number of times of changing friction cloth, the adjusting time of the technology of further reducing friction.
As a kind of disposable implementation, the power system in the embodiment of the invention in the alignment film rubbing equipment can also realize by the 3rd propulsion system and the 4th propulsion system, replace existing first propulsion system and second propulsion system.
Concrete friction process is: the smooth friction cloth of wall-attached surface on second base station; Fixedly be coated with the substrate of the film that is used to form alignment films on first base station, described substrate is parallel relative state with rubbing between the cloth surface; Adjust the angle of direction of relative movement between the side of described substrate and friction cloth and the substrate then by adjusting gear.After finishing these preliminary works, drive described first base station by the 3rd propulsion system and make substrate move along the direction of substrate surface; When second base station moves to friction cloth fully during the position of the film on the covered substrate, moving described second base station by the 4th propulsion system makes described film contact with the flat surface of described friction cloth, with after the flat surface of described friction cloth contacts, move described second base station to separate the flat surface of described film and described friction cloth at described film by the 4th propulsion system.Wherein, the 3rd propulsion system can be with reference to the implementation of second propulsion system, and the 4th propulsion system can be with reference to the implementation of first propulsion system.
Conspicuous, for the needs of real technology, first propulsion system all can be linked to each other with bogey with the 4th propulsion system, second propulsion system are all linked to each other with stationary installation with the 3rd propulsion system, select propulsion system according to actual needs.
Embodiment 2:
Because present embodiment has mainly adopted the mode of band transmission to realize friction process, in order to help to understand the technical scheme of present embodiment, simply introduces earlier the band transmission.The system of band transmission is made up of at least two belt wheels (being equivalent to the transfer roller among the following embodiment) and the annular driving band that tightly is enclosed within on the belt wheel, one of them belt wheel is driving wheel (being that power is applied on this belt wheel), and the burnishing surface of the friction cloth of mentioning among the embodiment is the pilled-in selvedge of annular driving band.
The embodiment of the invention provides a kind of alignment film rubbing process, and as shown in Figure 4, this technology comprises:
401, rub cloth on two transfer rollers with one whole,, the diameter of transfer roller can be taken as 130mm in the present embodiment; The substrate that will be coated with the film that is used to form alignment films by vacuum suction structure on first base station is fixed on the table top of first base station, the table top of this first base station is parallel relative with friction cloth surface, so just can be so that the film of described substrate is in parallel relative state with friction cloth surface.The friction cloth surface of mentioning in this process is meant the upper and lower surface parallel with substrate.
402, in order to obtain the different alignment films of groove mark direction, also need to adjust the side and the burnishing surface of friction cloth and the angle of the direction of relative movement of substrate, the general adjustment that can realize above-mentioned angle by the angle of adjusting first base station of described substrate in the present embodiment.
If in friction process, desired alignment films groove mark direction is corresponding with the current first base station angle, then can adjust the side of substrate and the angle of described pilled-in selvedge friction cloth direction of motion, just can save 402 processes.
The direction of motion of pilled-in selvedge friction cloth is the direction along substrate surface in this process.
403 and rotate to drive described friction cloth motion by driving one of them transfer roller, thereby make the friction cloth of pilled-in selvedge move along the direction of substrate surface, after transfer roller rotated, the pilled-in selvedge of friction cloth was exactly a flat surface, had formed the flat surface of friction cloth.
Generally speaking, the motion of the friction cloth of above-mentioned pilled-in selvedge is a linear uniform motion, to guarantee the obtaining better alignment films of homogeneity in the follow-up friction.By of the speed uniform rotation of driving transfer roller, can realize the linear uniform motion of the friction cloth of pilled-in selvedge in the present embodiment with 1000 rpms.
404, move first base station rapidly, make substrate on the base station of winning move to the friction cloth cover state of contact of described film and described pilled-in selvedge.
405, at film after cloth contact with friction, mobile rapidly once more first base station, the state that the friction cloth that makes substrate on the base station of winning move to described film and described pilled-in selvedge separates.
Corresponding to above-mentioned alignment film rubbing process, the embodiment of the invention also provides a kind of alignment film rubbing equipment, as shown in Figure 5 and Figure 6, this equipment comprises: realize first base station 41, adjusting gear 42, first propulsion system 43 and second propulsion system 44 of realizing the power system function and two transfer rollers 45 that are used to finish the bogey function of stationary installation function, the alignment film rubbing equipment use-pattern that present embodiment provides is as follows:
Adding man-hour according to friction process, earlier will be on two transfer rollers 45 with one whole friction cloth 3, fixedly be coated with the substrate 4 of film then at described first base station 41 by the vacuum suction structure on first base station 41, and after having preestablished active transfer roller and rotation direction, can learn that transfer roller rotates the pilled-in selvedge of back friction cloth, so that the film of substrate need be with the pilled-in selvedge of friction cloth 3 in the present embodiment is surperficial parallel relative.
In order to obtain the different alignment films of groove mark direction, also need to adjust the side of described substrate and the angle of described friction cloth 3 direction of motion in the present embodiment, generally can realize the adjustment of above-mentioned angle by the angle of adjusting first base station, adjusting gear 42 in the present embodiment is exactly to be used to adjust the side of described substrate and the angle of described friction cloth pilled-in selvedge and substrate direction of relative movement, and adjusting gear 42 is can realize what above-mentioned angle was adjusted by the angle of adjusting first base station.During specific implementation, can adopt that the represented mode of Fig. 3 realizes adjusting gear 42 among the embodiment 1.
After carrying out above-mentioned preliminary work, utilize the smooth friction cloth of described first propulsion system, 43 drive surfaces to move along the direction of substrate surface, because the friction cloth in the present embodiment is on two transfer rollers 45, so, described first propulsion system 43 can also move to drive described friction cloth by driving one of them transfer roller rotation, thereby make the friction cloth of pilled-in selvedge move along the direction of substrate surface.Described second propulsion system 44 are used for moving first base station rapidly, make substrate on the base station of winning move to the friction cloth surface state of contact of described film and described pilled-in selvedge.At film after cloth contact with friction, once more by second propulsion system, 44 rapidly mobile first base stations, the state that the friction cloth surface that makes substrate on the base station of winning move to described film and described pilled-in selvedge separates.
The embodiment of the invention does not limit the concrete relative position of first base station and pilled-in selvedge friction cloth, and generally speaking, its relative position includes but not limited to following two kinds: first base station up, pilled-in selvedge friction cloth below; Perhaps first base station below, pilled-in selvedge friction cloth up.
In order to make the friction cloth surface of the pilled-in selvedge relative more smooth with alignment films, present embodiment alignment film rubbing equipment also comprises conflict plate 46, as shown in Figure 5, this conflict plate 46 is arranged between the pilled-in selvedge and slack list of described friction cloth, and should the conflict plate 46 inconsistent with the pilled-in selvedge of described friction cloth.This conflict plate 46 can be just inconsistent with pilled-in selvedge, also can be simultaneously all inconsistent with pilled-in selvedge and slack list.
In order to make the friction cloth surface of the pilled-in selvedge relative more smooth with alignment films, present embodiment can also adopt other implementation, as shown in Figure 7, between the pilled-in selvedge of described friction cloth and slack list, also be provided with at least one transfer roller 47, prop up the friction cloth of pilled-in selvedge by these transfer rollers 47, make it more smooth.
Can the adopting but be not limited to following implementation of first propulsion system 43 in the present embodiment: rotate the rotation that directly drives transfer roller 45 by motor, the rotation of transfer roller 45 can directly form the rectilinear motion of friction cloth part.
Can the adopting but be not limited to following implementation of second propulsion system 44 in the present embodiment: provide power source by motor 441, by leading screw 442 circular motion of motor 441 is changed into rectilinear motion then, to need driven first base station to be connected to leading screw by connecting rod 443 threadably, thus, when the driven by motor leading screw rotates, the rotation of leading screw makes the base station of winning do rectilinear motion along leading screw, finishes the first base station mode of motion in the present embodiment.
Alignment film rubbing process that the embodiment of the invention provides and equipment, when rubbing, the film and the mode that employing face contacts between the cloth that rubs can guarantee that in the moment of rubbing, the direction of relative movement of the friction that film bore on the substrate is identical with speed; And the flat surface of above-mentioned friction cloth can guarantee that the friction depth of film is identical, can guarantee the groove mark direction that rubs out at last and the homogeneity of the degree of depth so preferably.
Except the homogeneity of the groove mark direction that guarantees alignment films and the degree of depth, alignment film rubbing process that the embodiment of the invention provides and equipment also have following effect with respect to prior art:
The first, because alignment film rubbing process and equipment that the embodiment of the invention provides, in once the contacting of friction cloth and film, finish the friction of whole base plate upper film, for the friction that the distance that needs the friction roller motion to grow in the prior art just can be finished a whole base plate upper film, the embodiment of the invention has higher friction efficiency, thereby has improved production efficiency.
When the second, carrying out the friction of alignment films according to the friction process of prior art, regulate following parameter according to different needs: friction number of times, friction depth, friction roller rotating speed, friction roller radius and substrate are with respect to the translational speed in friction roller axle center; When adopting alignment film rubbing process provided by the invention and equipment to carry out the friction of alignment films, need to regulate following parameter: the movement velocity (being the slewing rate of transfer roller) of friction number of times, friction depth, friction cloth; So the parameter that the present invention need regulate will be lacked with respect to prior art, make that the adjusting of friction process is comparatively simple.
If the 3rd adopts friction roller of the prior art, to the large-size substrate carry out friction process the time, whenever finish once friction, the friction cloth on the friction roller need have repeatedly with film and contact, causes the cloth loss that rubs bigger, and alignment film rubbing process in the embodiment of the invention and equipment, whenever finish once friction, friction cloth only needs to contact once with film, has reduced the loss of friction cloth, so also can reduce the number of times of changing friction cloth, the adjusting time of the technology of further reducing friction.
The embodiment of the invention is mainly used in the liquid crystal display device process, and film is rubbed to be obtained in the technology of alignment films, for example: in the technology of colored filter substrate and tft array substrate formation alignment films.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection domain with claim.
Claims (16)
1. an alignment film rubbing process is characterized in that, comprising:
On stationary installation, fixedly be coated with the substrate of the film that is used to form alignment films, carrying friction cloth on bogey, described substrate is parallel relative state with rubbing between the cloth surface;
This technology also comprises:
(1) between described friction cloth and described substrate, forms along the relative motion of the direction of substrate surface;
(2) formation face contacts between the flat surface of described film and described friction cloth;
(3) flat surface of described film of separation and described friction cloth.
2. alignment film rubbing process according to claim 1 is characterized in that, in (2) before, this technology also comprises:
Adjust the side of described substrate and the angle of described direction of relative movement.
3. alignment film rubbing process according to claim 1 is characterized in that,
Described (1) is: drive described bogey and make friction cloth move along the direction of substrate surface;
Described (2) are: move described stationary installation and make described film contact with the flat surface of described friction cloth;
Described (3) are: move described stationary installation and make the flat surface of described film and described friction cloth be separated; Perhaps
Described (1) is: drive described stationary installation and make substrate move along the direction of substrate surface;
Described (2) are: move described bogey and make the flat surface of described friction cloth contact with described film;
Described (3) are: move described bogey and make the flat surface of described friction cloth and described film be separated.
4. alignment film rubbing process according to claim 1, it is characterized in that, describedly be: be provided with the substrate that fixedly is coated with the film that is used to form alignment films on first base station of vacuum suction structure at the substrate that fixedly is coated with the film that is used to form alignment films on the stationary installation.
5. alignment film rubbing process according to claim 1 is characterized in that, at carrying friction cloth on the bogey is: the smooth friction cloth of wall-attached surface on the table top of second base station.
6. alignment film rubbing process according to claim 1 is characterized in that, at carrying friction cloth on the bogey is: twine friction cloth on two transfer rollers; Described (1) is: drive one of them transfer roller rotation and drive described friction cloth motion feasible friction cloth formation pilled-in selvedge and slack list, the flat surface of described friction cloth is described pilled-in selvedge.
7. alignment film rubbing process according to claim 6 is characterized in that, this technology also comprises: the conflict plate is set between described pilled-in selvedge and slack list, and the described conflict plate described pilled-in selvedge of conflicting.
8. alignment film rubbing process according to claim 6 is characterized in that, this technology also comprises: at least one transfer roller also is set between described pilled-in selvedge and slack list, and described at least one transfer roller conflict described pilled-in selvedge and slack list.
9. an alignment film rubbing equipment is characterized in that, comprising:
Bogey is used for carrying friction cloth;
Stationary installation is used for fixing the substrate that is coated with the film that is used to form alignment films, and described substrate is parallel relative state with rubbing between the cloth surface;
Power system is used for forming between described friction cloth and described substrate along the relative motion of the direction of substrate surface; This power system is used for also that formation face contacts between the flat surface of described film and described friction cloth, and separates the flat surface of described film and described friction cloth.
10. alignment film rubbing equipment according to claim 9 is characterized in that, this equipment also comprises:
Adjusting gear is used to adjust the side of described substrate and the angle of described direction of relative movement.
11. alignment film rubbing equipment according to claim 9 is characterized in that, described power system comprises:
First propulsion system are used to drive described bogey and make friction cloth move along the direction of substrate surface; Second propulsion system are used for moving described stationary installation and make described film contact with the flat surface of described friction cloth; These second propulsion system also are used for moving described stationary installation makes the flat surface of described film and described friction cloth be separated; Perhaps
The 3rd propulsion system are used to drive described stationary installation and make substrate move along the direction of substrate surface;
The 4th propulsion system are used for moving described bogey and make described film contact with the flat surface of described friction cloth; The 4th propulsion system also are used for moving described bogey makes the flat surface of described film and described friction cloth be separated.
12. alignment film rubbing equipment according to claim 9 is characterized in that, described stationary installation is first base station that is provided with the vacuum suction structure.
13. alignment film rubbing equipment according to claim 9 is characterized in that, described bogey is second base station, and described friction cloth is attached to the flat surface that forms friction cloth on the table top of second base station.
14. alignment film rubbing equipment according to claim 11, it is characterized in that, described bogey comprises two transfer rollers, described friction cloth is wrapped on described two transfer rollers, described first propulsion system pass through to drive one of them transfer roller rotation and drive described friction cloth motion feasible friction cloth formation pilled-in selvedge and slack list, and the flat surface of described friction cloth is described pilled-in selvedge.
15. alignment film rubbing equipment according to claim 14 is characterized in that, also is provided with the conflict plate between described pilled-in selvedge and the slack list, and the described conflict plate described pilled-in selvedge of conflicting.
16. alignment film rubbing equipment according to claim 14 is characterized in that, also is provided with at least one transfer roller between described pilled-in selvedge and the slack list, and described at least one transfer roller conflict described pilled-in selvedge and slack list.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102475438A CN101770115B (en) | 2008-12-30 | 2008-12-30 | Alignment film rubbing process and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102475438A CN101770115B (en) | 2008-12-30 | 2008-12-30 | Alignment film rubbing process and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101770115A CN101770115A (en) | 2010-07-07 |
| CN101770115B true CN101770115B (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102475438A Expired - Fee Related CN101770115B (en) | 2008-12-30 | 2008-12-30 | Alignment film rubbing process and device |
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| Country | Link |
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| CN (1) | CN101770115B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645792B (en) * | 2012-04-25 | 2014-10-22 | 青岛海信电器股份有限公司 | Friction machine for fabrication of liquid crystal cell, liquid crystal cell and its fabrication method, and liquid crystal display device |
| CN103278967B (en) * | 2013-05-13 | 2015-07-22 | 北京京东方光电科技有限公司 | Orientation device |
| CN103407179B (en) * | 2013-07-04 | 2015-08-19 | 青岛科技大学 | A kind of apparatus and method preparing film with high orientation degree |
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2008
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| CN101770115A (en) | 2010-07-07 |
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