CN1268943C - Method of making optical film module - Google Patents
Method of making optical film module Download PDFInfo
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- CN1268943C CN1268943C CN 03142547 CN03142547A CN1268943C CN 1268943 C CN1268943 C CN 1268943C CN 03142547 CN03142547 CN 03142547 CN 03142547 A CN03142547 A CN 03142547A CN 1268943 C CN1268943 C CN 1268943C
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- blooming
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Abstract
The present invention relates to a method for making optical film modules, which comprises the following steps: firstly, providing a plurality of optical film materials; successively, overlapping the optical film materials; then, cutting the overlapped optical film materials in order to form a plurality of optical films; sticking the optical films at the same time of forming the optical films in order to make the optical membranes form an optical film mould. The present invention overlaps a plurality of optical film materials before cutting, and therefore, a plurality of optical films can be obtained only by cutting once, and the phenomena of cutting cost waste and man-hour waste, which are caused by cutting for many times when the existing known methods make a plurality of optical films, can be voided. In addition, at the time of cutting or after cutting, a plurality of optical films are stuck to form an optical film mould which can be used in the process of making a backlight module only needing one-time assembly, and therefore, the cost of assembling a backlight module and man hours can be reduced. The present invention has practicability, and therefore, the present invention has wide utility value in industry.
Description
Technical field
The present invention relates to optical diaphragm set in the semiconductor devices of a kind of essential electronic element field, particularly relate to a kind of be applied to backlight module processing procedure in, can reduce the cost of backlight module assembling and the optical diaphragm set in man-hour.
Background technology
Multimedia society is progressive rapidly at present, is the tremendous progress that is indebted to semiconductor subassembly or man-machine display device mostly.With regard to display, cathode-ray tube (CRT) (Cathode Ray Tube is called for short CRT) because have excellent display quality and its economy, is monopolized monitor market in recent years always.Yet, the environment of most terminating machine/display equipments of operating on the table for the individual, or cut with the viewpoint of environmental protection, if predicted with the trend of saving the energy, above-mentioned cathode-ray tube (CRT) is because of still having a lot of problems in its space utilization and the energy resource consumption, then can't effectively provide solution for the demand of light, thin, short, little and low consumpting power.Therefore, have that high image quality, space availability ratio are good, the LCD (Liquid Crystal Display is called for short LCD) of low consumpting power, advantageous characteristic such as radiationless becomes the main flow in market gradually.It should be noted that, because liquid crystal panel itself can't be luminous in the LCD, so must provide liquid crystal panel required area source by backlight module (BacK Light is called for short B/L), make liquid crystal panel reach the effect of demonstration, obtain enough brightness and contrast simultaneously.
Seeing also shown in Figure 1ly, is the exploded perspective synoptic diagram of existing known backlight module.As shown in the figure, should existing known backlight module (be module backlight, below all claim backlight module) 100, it mainly is by a framework (frame) 110, a reflector plate (reflector) 120,130 and three 140 formations of blooming piece (optical film) of a light guide plate (LightGuide Plate is called for short LGP).Should have the assembling mode of known backlight module 100 now, be that reflector plate 120 is disposed in the framework 110, then light guide plate 130 is disposed on the reflector plate 120, afterwards, three blooming pieces 140 are disposed on the light guide plate 130 one by one, finish assembling with a metal framework 150 above-mentioned framework 110, reflector plate 120, light guide plate 130 and three blooming pieces 140 of carrying at last.
It should be noted that, in order to promote presenting of backlight module 100 briliancy, normally configuration is provided with a plurality of blooming pieces 140 on light guide plate 130, with among Fig. 1 on light guide plate 130 configuration to be provided with three blooming pieces 140 be example, because these three blooming pieces 140 are all independent member, so need repeat to assemble three times, so loaded down with trivial details Assembly Action is to cause the cost of backlight module 100 assemblings and the principal element that improves man-hour.In addition, need just to be reached through cutting three times owing to make above-mentioned three blooming pieces 140, therefore, cost that cuts and man-hour also improve thereupon.
This shows that above-mentioned existing optical diaphragm set still has many defectives, and demands urgently further being improved.
In order to solve the defective of existing optical diaphragm set, relevant manufacturer there's no one who doesn't or isn't seeks the road that solves painstakingly, but does not see always that for a long time suitable design finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing optical diaphragm set exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of new optical diaphragm set, can improve general existing on the market conventional optical diaphragm set, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing optical diaphragm set exists, and provide a kind of new optical diaphragm set, technical problem underlying to be solved is it need once to be cut promptly can obtain the optical diaphragm group be made up of a plurality of blooming piece, and can avoid in the prior art making a plurality of blooming piece the time, need to cause the cost that cuts and the wasting phenomenon in man-hour, thereby have the extensive value on the industry by repeatedly cutting.
Another object of the present invention is to, a kind of optical diaphragm set is provided, technical matters to be solved is to apply in the processing procedure of backlight module when optical diaphragm group of the present invention, can effectively shorten the assembly cost and the man-hour of backlight module, thereby have the effect of enhancement on the whole, and have more practicality.
Purpose of the present invention and to solve its technical problem underlying be to adopt following technical scheme to realize.According to a kind of optical diaphragm set that the present invention proposes, it may further comprise the steps: provide a plurality of blooming pieces former material; The former material of described a plurality of blooming pieces is superimposed; And cut the former material of described a plurality of blooming pieces after superimposed, forming a plurality of blooming pieces, and when forming described a plurality of blooming pieces, stick together described a plurality of superimposed blooming piece.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
Aforesaid optical diaphragm set, the method for the former material of wherein said superimposed described a plurality of blooming pieces is to utilize a rolling mechanism that the former material of described a plurality of blooming pieces is seized on both sides by the arms jointly.
Aforesaid optical diaphragm set, wherein said method of sticking together described a plurality of blooming pieces, it comprises: coating one glue material on a cutter; And cut the former material of described a plurality of blooming pieces after superimposed, and when cutting, make this glue material on this cutter be attached to the periphery of described a plurality of blooming pieces with this cutter.
Aforesaid optical diaphragm set, wherein said method of sticking together described a plurality of blooming pieces, it comprises: coating one glue material on the surface of the former material of described a plurality of blooming pieces after superimposed; And cut on the former material of described a plurality of blooming pieces after superimposed with a cutter and to have the zone of this glue material, and when cutting, make this glue material be attached to the periphery of described a plurality of blooming pieces.
Aforesaid optical diaphragm set, wherein said a plurality of blooming pieces comprise a diffusion barrier sheet.
Aforesaid optical diaphragm set, wherein said a plurality of blooming pieces comprise that one spreads-add lustre to diaphragm.
Aforesaid optical diaphragm set, wherein said a plurality of blooming pieces comprise the diaphragm that adds lustre to.
Aforesaid optical diaphragm set, the former material of wherein said each described a plurality of blooming piece is to take in the mode of a winding.
Purpose of the present invention and solve its technical problem underlying and also realize by the following technical solutions.According to a kind of optical diaphragm set that the present invention proposes, it may further comprise the steps: provide a plurality of blooming pieces former material; The former material of described a plurality of blooming pieces is superimposed; Cut the former material of described a plurality of blooming pieces after superimposed, to form a plurality of blooming pieces; And after the action that cuts the former material of described a plurality of blooming pieces after superimposed is finished, stick together described a plurality of superimposed blooming piece.
The object of the invention to solve the technical problems can also be further achieved by the following technical measures.
Aforesaid optical diaphragm set, the method for the former material of wherein said superimposed described a plurality of blooming pieces is to utilize a rolling mechanism that the former material of described a plurality of blooming pieces is seized on both sides by the arms jointly.
Aforesaid optical diaphragm set, wherein said method of sticking together described a plurality of blooming pieces is after the action that cuts the former material of described a plurality of blooming pieces after superimposed is finished, and utilizes an apparatus for coating one glue material to be coated the periphery of described a plurality of blooming pieces.
Aforesaid optical diaphragm set, wherein said a plurality of blooming pieces comprise a diffusion barrier sheet.
Aforesaid optical diaphragm set, wherein said a plurality of blooming pieces comprise that one spreads-add lustre to diaphragm.
Aforesaid optical diaphragm set, wherein said a plurality of blooming pieces comprise the diaphragm that adds lustre to.
Aforesaid optical diaphragm set, the former material of wherein said each described a plurality of blooming piece is to take in the mode of a winding.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:
Optical diaphragm set of the present invention, it may further comprise the steps: at first, provide a plurality of blooming pieces former material, then, the former material of described a plurality of blooming pieces is superimposed, afterwards, cut described a plurality of former material of blooming piece after superimposed, forming a plurality of blooming pieces, and when forming described a plurality of blooming pieces, stick together described a plurality of blooming piece, make described a plurality of blooming piece become an optical diaphragm group.
Equally in order to reach aforementioned goal of the invention, the present invention reintroduces a kind of optical diaphragm set, and it may further comprise the steps: at first, provide a plurality of blooming pieces former material, then, the former material of described a plurality of blooming pieces is superimposed, afterwards, cut described a plurality of former material of blooming piece after superimposed, to form a plurality of blooming pieces, at last, after the action that cuts is finished, stick together described a plurality of blooming piece, make described a plurality of blooming piece become an optical diaphragm group.
According to preferred embodiment of the present invention, wherein stick together the method for described a plurality of blooming pieces, it is coating one glue material on a cutter, then cut the former material of described a plurality of blooming pieces after superimposed, and when cutting, make glue material on the cutter be attached to the periphery of described a plurality of blooming pieces with cutter.
According to preferred embodiment of the present invention, wherein stick together the method for described a plurality of blooming pieces, it is coating one glue material on the surface of the former material of described a plurality of blooming pieces after superimposed, then, cut the former material of described a plurality of blooming pieces after superimposed with a cutter, and when cutting, make this glue material be attached to the periphery of described a plurality of blooming pieces.
According to preferred embodiment of the present invention, wherein stick together the method for described a plurality of blooming pieces, be after the action that cuts is finished, utilize an apparatus for coating one glue material to be coated the periphery of described a plurality of blooming pieces.
According to preferred embodiment of the present invention, the method for the former material of wherein superimposed described a plurality of blooming pieces for example utilizes a rolling mechanism that the former material of described a plurality of blooming pieces is seized on both sides by the arms jointly.In addition, the former material of each blooming piece is for example taken in the mode of a winding.In addition, be for example to be that the diaphragm (Prism), that adds lustre to spreads-add lustre to a diaphragm (Diffuser-Prism) or a diffusion barrier sheet (Diffuser) via cutting formed a plurality of blooming piece.
By above-mentioned manufacture method, optical diaphragm set of the present invention has following advantage at least:
1, the present invention is superimposed because be about to the former material of a plurality of blooming pieces before cutting, so only need to obtain a plurality of blooming pieces through once cutting, in the time of can avoiding existing known manufacture method to make a plurality of blooming piece, need to cause the cost that cuts and the wasting phenomenon in man-hour, thereby have the extensive value on the industry by repeatedly cutting.
2, the present invention is because when cutting action or afterwards, being about to a plurality of blooming pieces sticks together and forms an optical diaphragm group, this optical diaphragm group is used in only to be needed in the processing procedure of backlight module can finish through assembling once, so can reduce the cost and the man-hour of backlight module assembling, thereby have the effect of enhancement on the whole, and have more practicality.
In sum, the optical diaphragm set that the present invention is special, it is at first to provide a plurality of blooming pieces former material, then that the former material of described a plurality of blooming pieces is superimposed, and cut described a plurality of former material of blooming piece after superimposed, forming a plurality of blooming pieces, and when forming described a plurality of blooming pieces, stick together described a plurality of blooming piece, make described a plurality of blooming piece become an optical diaphragm group.Above-mentioned optical diaphragm group applies in the processing procedure of backlight module, can reduce the cost and the man-hour of backlight module assembling.It has above-mentioned plurality of advantages and practical value, really belongs to innovation on manufacture method, and more existing optical diaphragm set has the multinomial effect of enhancement, and has the extensive value of industry.No matter it is all having bigger improvement on manufacture method or on the function, and has large improvement technically, and has produced handy and practical effect, and has the effect of enhancement really, thereby is suitable for practicality more, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the exploded perspective synoptic diagram that has known backlight module now.
Fig. 2 is the process flow diagram according to a preferred embodiment of the present invention optical diaphragm set.
Fig. 3 be according in a preferred embodiment of the present invention in order to implement the gallery device structural representation of an optical diaphragm set.
Fig. 4 is according to a kind of action synoptic diagram that cuts and stick together simultaneously that reaches in a preferred embodiment of the present invention.
Fig. 5 can reach the action synoptic diagram that cuts and stick together simultaneously according to another kind of in a preferred embodiment of the present invention.
Fig. 6 is the exploded perspective synoptic diagram of backlight module of the present invention.
100: backlight module 110: framework
120: reflector plate 130: light guide plate
140: optics matrix 150: metal framework
200: the former material 202 of blooming piece: the former material of blooming piece
204: the former material 206 of blooming piece: the former material of the blooming piece after superimposed
210: rolling mechanism 220: cutter sweep
222: cutter 224: carrying platform
230: optical diaphragm group 300: the glue material
300 ': the glue material
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its concrete manufacture method of optical diaphragm set, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
The present invention mainly provides a kind of optical diaphragm set, be applicable in the processing procedure of backlight module, and the specific embodiment of the method for making of optical diaphragm group of the present invention such as following Fig. 2 is to shown in Figure 6.
See also Fig. 2, shown in Figure 3, Fig. 2 is the process flow diagram according to a preferred embodiment of the present invention optical diaphragm set, Fig. 3 be according in a preferred embodiment of the present invention in order to implement the gallery device structural representation of an optical diaphragm set.
Please consult Fig. 2 and shown in Figure 3 jointly, disclosed optical diaphragm set in the preferred embodiment of the present invention, be that the former material of a plurality of blooming pieces (steps A) at first is provided, wherein, be to be that example describes with three former materials 200,202,204 of blooming piece in the present embodiment, the former material the 200,202, the 204th of this each blooming piece is taken in the mode of a winding.Then, with three former materials 200,202,204 of blooming piece superimposed (step B), wherein superimposed method is to utilize a rolling mechanism 210 the former material 200,202,204 of described a plurality of blooming pieces is seized on both sides by the arms jointly and to be superimposed with each other, and the former material 206 of the blooming piece after superimposed pushed towards a cutting device 220, this cutter sweep 220 is made of a cutter 222 and a carrying platform 224, wherein, carrying platform 224 is in order to carry the former material 206 of blooming piece after superimposed.Afterwards, utilize cutter 222 to cut this former material 206 of blooming piece after superimposed, forming three blooming pieces, and when forming this three blooming piece, this three blooming piece is sticked together (step C), make described a plurality of blooming piece become an optical diaphragm group 230.In addition, be for example to be that a diffusion barrier sheet, spreads-add lustre to diaphragm and a diaphragm that adds lustre to through cutting formed three blooming pieces among the figure.And above-mentionedly be about to the mode that this three blooming piece sticks together when cutting and in the hypomere content, disclose explanation reaching.
Seeing also shown in Figure 4ly, is to cut and stick together the action synoptic diagram simultaneously according to a kind of reaching in a preferred embodiment of the present invention.As shown in Figure 4, for ease of explanation, only show the side that cutter 222 cuts the former material 206 of blooming piece after superimposed among the figure.Wherein reach the method for sticking together three blooming pieces when cutting, be on cutter 222, to be coated with a glue material 300, then, cut the former material 206 of blooming piece after superimposed with cutter 222, glue material 300 on the cutter 222 promptly can be attached to the periphery of three blooming pieces along with this action that cuts at this moment, and forms optical diaphragm group 230.
Seeing also shown in Figure 5ly, is can reach according to another kind in a preferred embodiment of the present invention to cut and stick together the action synoptic diagram simultaneously.As shown in Figure 5, for convenience of explanation, equally only show the side that cutter 222 cuts the former material 206 of blooming piece after superimposed among the figure.Wherein reach the other method of sticking together three blooming pieces when cutting, be on the surface of the former material 206 of the blooming piece after superimposed, to be coated with a glue material 300 ', then, cut the zone that has glue material 300 ' on the former material 206 of blooming piece after superimposed with cutter 222, glue material 300 ' is understood equally along with this action that cuts is attached to the periphery of three blooming pieces when cutting, and forms an optical diaphragm group 230.
Yet, being familiar with this skill person should know, the present invention is confined to above-mentionedly just this three blooming piece be sticked together when cutting action, it also can be after the action that cuts be finished, utilize an apparatus for coating again, a hairbrush is for example coated the periphery of this three blooming piece with the glue material, and three blooming pieces are sticked together mutually becomes an optical diaphragm group.
Seeing also shown in Figure 6ly, is the exploded perspective synoptic diagram of backlight module of the present invention.Please consult Fig. 1 and shown in Figure 6 simultaneously, because above-mentioned optical diaphragm group 230 is a single member after completing, and have the structure of trilamellar membrane sheet simultaneously concurrently, the Assembly Action once of its need, this optical diaphragm group 230 can be assembled on the light guide plate 130 of backlight module 100, so with existing known manufacture method with three blooming pieces 140 be disposed at one by one assembling on the light guide plate 130 move compare under, use the backlight module 100 of optical diaphragm group 230 of the present invention, the cost of its assembling and man-hour can decrease.
In addition, being familiar with this skill person should know, diaphragm number in the optical diaphragm group 230 of the present invention is not that what illustrated is three diaphragms in limitation as the above-mentioned preferred embodiment, but the demand that can present according to backlight module 100 briliancy, and formation is set by two sandwich constructions of forming more than the diaphragm.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (15)
1, a kind of optical diaphragm set is characterized in that it may further comprise the steps:
Provide a plurality of blooming pieces former material;
The former material of described a plurality of blooming pieces is superimposed; And
Cut the former material of described a plurality of blooming pieces after superimposed, forming a plurality of blooming pieces, and when forming described a plurality of blooming pieces, stick together described a plurality of superimposed blooming piece.
2, optical diaphragm set according to claim 1, the method that it is characterized in that the former material of wherein said superimposed described a plurality of blooming pieces is to utilize a rolling mechanism that the former material of described a plurality of blooming pieces is seized on both sides by the arms jointly.
3, optical diaphragm set according to claim 1 is characterized in that wherein said method of sticking together described a plurality of blooming pieces, and it comprises:
Coating one glue material on a cutter; And
Cut the former material of described a plurality of blooming pieces after superimposed with this cutter, and when cutting, make this glue material on this cutter be attached to the periphery of described a plurality of blooming pieces.
4, optical diaphragm set according to claim 1 is characterized in that wherein said method of sticking together described a plurality of blooming pieces, and it comprises:
Coating one glue material on the surface of the former material of described a plurality of blooming pieces after superimposed; And
Cut on the former material of described a plurality of blooming pieces after superimposed with a cutter and to have the zone of this glue material, and when cutting, make this glue material be attached to the periphery of described a plurality of blooming pieces.
5, optical diaphragm set according to claim 1 is characterized in that wherein said a plurality of blooming piece comprises a diffusion barrier sheet.
6, optical diaphragm set according to claim 1 is characterized in that wherein said a plurality of blooming piece comprises that one spreads-add lustre to diaphragm.
7, optical diaphragm set according to claim 1 is characterized in that wherein said a plurality of blooming piece comprises the diaphragm that adds lustre to.
8, optical diaphragm set according to claim 1 is characterized in that the former material of wherein said each described a plurality of blooming piece is to take in the mode of a winding.
9, a kind of optical diaphragm set is characterized in that it may further comprise the steps:
Provide a plurality of blooming pieces former material;
The former material of described a plurality of blooming pieces is superimposed;
Cut the former material of described a plurality of blooming pieces after superimposed, to form a plurality of blooming pieces; And
After the action that cuts the former material of described a plurality of blooming pieces after superimposed is finished, stick together described a plurality of superimposed blooming piece.
10, optical diaphragm set according to claim 9, the method that it is characterized in that the former material of wherein said superimposed described a plurality of blooming pieces is to utilize a rolling mechanism that the former material of described a plurality of blooming pieces is seized on both sides by the arms jointly.
11, optical diaphragm set according to claim 9, it is characterized in that wherein said method of sticking together described a plurality of blooming pieces is after the action that cuts the former material of described a plurality of blooming pieces after superimposed is finished, and utilizes an apparatus for coating one glue material to be coated the periphery of described a plurality of blooming pieces.
12, optical diaphragm set according to claim 9 is characterized in that wherein said a plurality of blooming piece comprises a diffusion barrier sheet.
13, optical diaphragm set according to claim 9 is characterized in that wherein said a plurality of blooming piece comprises that one spreads-add lustre to diaphragm.
14, optical diaphragm set according to claim 9 is characterized in that wherein said a plurality of blooming piece comprises the diaphragm that adds lustre to.
15, optical diaphragm set according to claim 9 is characterized in that the former material of wherein said each described a plurality of blooming piece is to take in the mode of a winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03142547 CN1268943C (en) | 2003-06-13 | 2003-06-13 | Method of making optical film module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03142547 CN1268943C (en) | 2003-06-13 | 2003-06-13 | Method of making optical film module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1567000A CN1567000A (en) | 2005-01-19 |
| CN1268943C true CN1268943C (en) | 2006-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03142547 Expired - Fee Related CN1268943C (en) | 2003-06-13 | 2003-06-13 | Method of making optical film module |
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| CN (1) | CN1268943C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285773A (en) * | 2022-09-30 | 2022-11-04 | 常州市武进天龙发展有限公司 | Optical film conveying apparatus |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365484C (en) * | 2005-07-25 | 2008-01-30 | 友达光电股份有限公司 | Optical diaphragm assembly, its processing method and device |
| CN101382696B (en) * | 2007-09-07 | 2010-08-25 | 群康科技(深圳)有限公司 | Optical film auto-assembling system and optical film auto-assembling method |
| CN101963314B (en) * | 2010-08-31 | 2012-06-27 | 友达光电（苏州）有限公司 | Backlight module, display device and manufacturing method of diffusion sheet |
| TWI656938B (en) * | 2017-12-11 | 2019-04-21 | 住華科技股份有限公司 | Cutting apparatus and cutting method using the same |
-
2003
- 2003-06-13 CN CN 03142547 patent/CN1268943C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285773A (en) * | 2022-09-30 | 2022-11-04 | 常州市武进天龙发展有限公司 | Optical film conveying apparatus |
| CN115285773B (en) * | 2022-09-30 | 2022-12-06 | 常州市武进天龙发展有限公司 | Optical film conveying apparatus |
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| Publication number | Publication date |
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| CN1567000A (en) | 2005-01-19 |
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