CN106353332B - Utilize the polarisation film detection apparatus of pattern light-transmitting plate - Google Patents
Utilize the polarisation film detection apparatus of pattern light-transmitting plate Download PDFInfo
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- CN106353332B CN106353332B CN201510414176.6A CN201510414176A CN106353332B CN 106353332 B CN106353332 B CN 106353332B CN 201510414176 A CN201510414176 A CN 201510414176A CN 106353332 B CN106353332 B CN 106353332B
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- light
- transmitting plate
- polarizing film
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Abstract
The present invention relates to a kind of polarisation film detection apparatus using pattern light-transmitting plate, it can confirm in previous process whether defect has occurred during light polarizing film passes through diversified optics selection system, to be improved the accuracy and reliability of light polarizing film fabric quality interpretation.For realizing the present invention of the purpose, it is equipped with the first, second lighting unit (10,20) to light polarizing film (S) irradiation light transferred by conveyer belt (100)；Top is equipped with the first, second camera (30,40) of the image for obtaining the light polarizing film that above-mentioned first, second lighting unit (10,20) is irradiated；Above-mentioned each first, second lighting unit (10,20) front is then equipped with the pattern light-transmitting plate (11,21) for foring pattern field (11a, 21a) according to a fixed spacing.
Description
[technical field]
The present invention relates to a kind of polarisation film detection apparatus, and more specifically, check device of the invention relies in light polarizing film
Conveyer automaticly inspects the defect of light polarizing film during transferring.
[background technique]
Light polarizing film for liquid crystal display device (Liquid Crystal Display) etc. only allows the vibration of light
Direction and the identical light transmission of polarizing axis, the light vibrated towards other directions are then absorbed or are reflected using appropriate medium,
To cause the light only vibrated towards specific direction.The light that the backlight (backlight) of LCD mould group is issued is all towards same
Direction vibration allows the mutual right angle of polarizing axis or light polarizing film is adhered in parallel the liquid crystal cell (Liquid of LCD mould group
Crystal Cell) two sides, therefore the intensity of transmitted light can be adjusted by the polarizing axis degree of rotation of liquid crystal cell.It adjusts
The whole transmitted intensity can be achieved with the grey (gray) between the black (black) of liquid crystal display device and white (white),
Therefore light polarizing film is one of very important part in the device of liquid crystal display device etc.
Would generally check whether the state of light polarizing film is good before light polarizing film is adhered to liquid crystal display device etc., such as
Checking whether there is light transmission fleck defect etc. with the presence or absence of foreign matter or bubble or inspection light polarizing film in light polarizing film.It carries out
The inspection equipment of the inspection can enumerate the automatic inspection for having the devices such as CCD camera and robot and automaticly inspecting polarisation membrane stage
Look into equipment.
The check device of an embodiment as the prior art, patent application the 2007-21757th discloses to tilt
It is pressurizeed while form transfers light polarizing film using transfer idler wheel and plate (sheet) and is able to obtain the skill of the distinct image of light polarizing film
Art.
But the above-mentioned prior art be only simply by camera obtain light polarizing film image after checked, therefore compared with
Difficulty selects the pressed part of light polarizing film.
Especially, only simple to utilize since conveyer belt trembles transmitted vibration during light polarizing film transfer
The inspection of selecting of camera progress is difficult clearly to judge light polarizing film with the presence or absence of bad.
[summary of the invention]
[technical task of solution]
Present invention seek to address that above-mentioned problem of the prior art, the purpose of the present invention is be directed to being pressed for light polarizing film easily
It is selected to promote the inspection efficiency of light polarizing film at position.
[technical solution for solving project]
Polarisation film detection apparatus using pattern light-transmitting plate of the invention can reach above-mentioned purpose, and feature of the invention exists
In being equipped with the first, second lighting unit to the light polarizing film irradiation light transferred by conveyer belt；Top is equipped with use
Come obtain the light polarizing film that above-mentioned first, second lighting unit is irradiated image the first, second camera；Above-mentioned each first,
Second lighting unit front is then equipped with the pattern light-transmitting plate for foring certain pattern field.
[beneficial effect]
Aforementioned polarisation film detection apparatus of the invention can be in light polarizing film by the process of diversified optics selection system
Whether defect has occurred in the previous process of middle confirmation, to be improved the accuracy of light polarizing film fabric quality judgement and reliable
Property.
Especially, general foreign matter label and bubble can not only be checked, moreover it is possible to effectively examine by pattern test mode
Look into striking trace or being greatly improved by swaging shape and checked efficiency for film surface.
[Detailed description of the invention]
Fig. 1 is the schematic structural diagram of the polarisation film detection apparatus of the embodiment of the present invention.
Fig. 2 is the pattern form figure of pattern light-transmitting plate of the invention.
Fig. 3 is the sectional structure chart of pressure roller of the invention.
Fig. 4 is that the section view of suction plate of the invention is schemed in detail.
Fig. 5 is the bad products image come detected by slit pattern light-transmitting plate in the present invention.
Fig. 6 is the bad products image come detected by comb mesh pattern light-transmitting plate in the present invention.
[specific embodiment]
The specific embodiment that the invention will now be described in detail with reference to the accompanying drawings.
Firstly, illustrating the structure of the polarisation film detection apparatus of one embodiment of the present of invention, it has been equipped with to by defeated
First, second lighting unit 10,20 of the light polarizing film S irradiation light for sending band 100 to transfer；Top is equipped with for obtaining above-mentioned
One, the first, second camera 30,40 of the image for the light polarizing film that the second lighting unit 10,20 is irradiated；Above-mentioned each first,
The front of two lighting unit 10,20 then in order to illumination light is covered in part and equipped with according to a fixed spacing form pattern field 11a,
The pattern light-transmitting plate 11,21 of 21a.
Especially as shown in Fig. 2, the pattern field 11a for being provided in the pattern light-transmitting plate 11 of the first illumination 10 constitutes slit shape
State, the pattern field 21a for being provided in the pattern light-transmitting plate 21 of above-mentioned second illumination 20 then constitute grid form.
Moreover, 100 lower part of conveyer belt is as illustrated in fig. 4 equipped with the suction plate for being penetratingly formed multiple suction holes 61
60, thus be able to allowed during transfer light polarizing film S by strap surface adsorb so as to steadily maintain flat surface in the case of obtain
Obtain image, it is preferable that be equipped with the Teflon layer 62 of lubricity material in the upper surface of suction plate 60, which can subtract
The frictional force between conveyer belt 100 and conveyer belt 100 is allowed swimmingly to move less.The side of suction plate 60 be equipped with for
The vacuum pump (not shown) of transmitting sucking pressure.
Moreover, each camera 30,40 of the present embodiment is connected to portrait processing unit 35, which receives institute
It is converted into digital image data after the image of acquisition and judges that light polarizing film whether there is by splenium using the data after conversion
Point.
On the other hand, the conveyer belt 100 in a preferred application example be equipped with the light polarizing film S for pressurizeing transferred with
Maintain the pressure roller 50 of the flatness of light polarizing film, above-mentioned 50 surface of pressure roller then roller deformation and equably in order to prevent
Apply pressure and form ceramic coating 51 in a manner of coating to apply, the side of pressure roller 50 can also be equipped with for needing
The far infrared illumination unit 70 of the far infrared of the light polarizing film S to be pressurizeed irradiation certain temperature.
The following detailed description of the light polarizing film checking process carried out using thus configured polarisation film detection apparatus of the invention
And its action and effect.
Firstly, after need to checking that the light polarizing film S of bad presence or absence is entered by the conveyer belt 100 of side, by conveying
During band 100 light polarizing film S make light polarizing film S be maintained flat surface by the uniformly applied pressure of pressure roller 50 and can
Obtain more accurate image.
Especially, 50 surface of pressure roller forms ceramic coating 51 with application pattern, thus can prevent light polarizing film S and
Damage or even deformation occur for roller surface.
Moreover, far infrared linear light is irradiated by far infrared illumination unit 70 in advance before pressure roller 50 is pressurizeed,
So that light polarizing film S effectively obtains the pressure that idler wheel applies to maintain flatness in the state of more flexible (flixible)
Power.
Later, in the state that light polarizing film S is steadily adsorbed on conveyer belt 100 by the adsorption of suction plate 60 into
Row pattern inspection, caused by checking that the surface light polarizing film S whether there is by striking trace or curling using pattern light-transmitting plate 11,21 at this time
Defective mode.
Also that is, the front of the first illumination 10 is mounted with to form the slit pattern light-transmitting plate 11 of slit form pattern field 11a
And make occur slit pattern on light polarizing film S, therefore be formed in light polarizing film surface strike trace or can be from passing through by splenium position
The boundary portion for the pattern that first camera 30 obtains clearly confirms and (please refers to Fig. 5).
Moreover, the front of the second illumination 20 is mounted with to be formed the grid of the pattern field 21a of the grid form in direction in length and breadth
Pattern light-transmitting plate 21 and make occur comb mesh pattern on light polarizing film S, therefore gauffer and curling occur in curly course for light polarizing film
Comb mesh pattern deformation can occur for the position of pressing, so that being able to add their confirmation from the image obtained by second camera 40 (please join
Read Fig. 6).
The bubble or foreign matter for being formed in polarizing filter S can not only be checked when therefore, using check device of the invention,
It can also check during processing and strike trace or pressed and crimped defective mode, select bad products so as to further be promoted
Accuracy.
Although being illustrated and illustrating with the particular embodiment of the present invention above, polarisation film detection apparatus of the invention
Structure can be realized various diversified deformations by those skilled in the art, this is natural.
But the embodiment by deformation cannot be by individually explaining in technical idea or scope of the invention as previously mentioned
It releases, the embodiment by deformation should all be illustrated as being included in the appended claims of the present invention as previously mentioned.
<explanation of main graphical label>
10: the first lighting units 11,21: pattern light-transmitting plate
11a, 21a: 20: the second lighting unit of pattern field
30: first camera 35: portrait processing unit
40: second camera 50: pressure roller
60: suction plate 61: suction hole
100: conveyer belt
Claims (7)
1. a kind of polarisation film detection apparatus using pattern light-transmitting plate, which is characterized in that
Be equipped with to by conveyer belt (100) transfer light polarizing film (S) irradiation light the first, second lighting unit (10,
20)；
Top be equipped with the image for obtaining the light polarizing film that above-mentioned first, second lighting unit (10,20) is irradiated first,
Second camera (30,40)；
Above-mentioned each first, second lighting unit (10,20) front then forms pattern field equipped with according to a fixed spacing
The pattern light-transmitting plate (11,21) of (11a, 21a).
2. the polarisation film detection apparatus according to claim 1 using pattern light-transmitting plate, which is characterized in that
The pattern field (11a) for being provided in the pattern light-transmitting plate (11) of above-mentioned first lighting unit (10) constitutes slit form, matches
The pattern field (21a) of the standby pattern light-transmitting plate (21) in above-mentioned second lighting unit (20) then constitutes grid form.
3. the polarisation film detection apparatus according to claim 1 using pattern light-transmitting plate, which is characterized in that
Above-mentioned first, second camera (30,40) is connected to portrait processing unit (35), and the portrait processing unit (35) receiving is obtained
Digital image data are converted into after the image obtained and judge that light polarizing film whether there is pressed part using the data after conversion.
4. the polarisation film detection apparatus according to claim 1 using pattern light-transmitting plate, which is characterized in that
Said conveyer belt (100) lower part is equipped with the suction plate (60) for being penetratingly formed multiple suction holes (61), thus to inclined
Light film (S) applies sucking pressure and is adjacent to power to enhance belt.
5. the polarisation film detection apparatus according to claim 4 using pattern light-transmitting plate, which is characterized in that
Have Teflon layer (62) in the upper surface of above-mentioned suction plate (60), which can reduce above-mentioned suction plate
(60) frictional force between upper surface and conveyer belt (100) and conveyer belt (100) is allowed swimmingly to move.
6. the polarisation film detection apparatus according to claim 1 using pattern light-transmitting plate, which is characterized in that
It is equipped with for pressurizeing transferred light polarizing film (S) in said conveyer belt (100) to maintain adding for the flatness of light polarizing film
Pressing roller (50), above-mentioned pressure roller (50) surface then in order to prevent roller deformation and uniformly applied pressure and with coating side
Formula forms ceramic coating (51).
7. the polarisation film detection apparatus according to claim 6 using pattern light-transmitting plate, which is characterized in that
The remote red of certain temperature is irradiated in the light polarizing film (S) that the side of above-mentioned pressure roller (50) is equipped with for pressurizeing to needs
The far infrared illumination unit (70) of outside line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414176.6A CN106353332B (en) | 2015-07-15 | 2015-07-15 | Utilize the polarisation film detection apparatus of pattern light-transmitting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414176.6A CN106353332B (en) | 2015-07-15 | 2015-07-15 | Utilize the polarisation film detection apparatus of pattern light-transmitting plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353332A CN106353332A (en) | 2017-01-25 |
| CN106353332B true CN106353332B (en) | 2019-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510414176.6A Active CN106353332B (en) | 2015-07-15 | 2015-07-15 | Utilize the polarisation film detection apparatus of pattern light-transmitting plate |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461948A (en) * | 2002-05-31 | 2003-12-17 | 住友化学工业株式会社 | Method and device for investigating polarization film |
| CN1508536A (en) * | 2002-12-17 | 2004-06-30 | 住友化学工业株式会社 | Method for checking defect of polarizing plate adhered with protective film |
| CN1841052A (en) * | 2005-03-31 | 2006-10-04 | 恩富技术株式会社 | Polarizing film detection apparatus and method |
| WO2009123002A1 (en) * | 2008-03-31 | 2009-10-08 | 住友化学株式会社 | Method of inspecting polarizing film |
| CN102906561A (en) * | 2010-05-25 | 2013-01-30 | 东丽株式会社 | Film defect inspection device, defect inspection method, and release film |
-
2015
- 2015-07-15 CN CN201510414176.6A patent/CN106353332B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461948A (en) * | 2002-05-31 | 2003-12-17 | 住友化学工业株式会社 | Method and device for investigating polarization film |
| CN1508536A (en) * | 2002-12-17 | 2004-06-30 | 住友化学工业株式会社 | Method for checking defect of polarizing plate adhered with protective film |
| CN1841052A (en) * | 2005-03-31 | 2006-10-04 | 恩富技术株式会社 | Polarizing film detection apparatus and method |
| WO2009123002A1 (en) * | 2008-03-31 | 2009-10-08 | 住友化学株式会社 | Method of inspecting polarizing film |
| CN102906561A (en) * | 2010-05-25 | 2013-01-30 | 东丽株式会社 | Film defect inspection device, defect inspection method, and release film |
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| Publication number | Publication date |
|---|---|
| CN106353332A (en) | 2017-01-25 |
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