CN102680472A - Method and device for detecting film - Google Patents
Method and device for detecting film Download PDFInfo
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- CN102680472A CN102680472A CN2012101331924A CN201210133192A CN102680472A CN 102680472 A CN102680472 A CN 102680472A CN 2012101331924 A CN2012101331924 A CN 2012101331924A CN 201210133192 A CN201210133192 A CN 201210133192A CN 102680472 A CN102680472 A CN 102680472A
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Abstract
The invention discloses a method and a device for detecting a film, which are used for detecting a film to be detected on a display panel. The method for detecting the film comprises the following steps of: (A) reading the reference position of the film to be detected; (B) capturing a plurality of detection images in the pixel arrangement direction of the film to be detected corresponding to the display panel at fixed intervals; (C) calculating distance difference between the calibration positions of a plurality of detection images corresponding to the reference position and the reference position, and correspondingly producing a plurality of deviation values; and (D) outputting a plurality of deviation values. By the method and the device, representation of the film to be detected on the display panel can be imaged, so that the film to be detected is accurately detected; and the method and the device can be applied to automatic detection of the film to be detected, so that manpower consumption for the detection is reduced and the detection efficiency is improved.
Description
Technical field
The present invention is meant a kind of film detection method and pick-up unit especially relevant for a kind of detection method and pick-up unit.
Background technology
Consult Fig. 1, be the existing display panel phase retardation film 900 of (figure does not show) that is attached at, major function is for producing the 3D image.This phase retardation film 900 comprises a plurality of first phase place viewing areas 910 and a plurality of second phase place viewing area 920, and these a plurality of first phase place viewing areas 910 and these a plurality of second phase place viewing areas 920 are parallel to each other and are spaced.In practical application; Because phase retardation film 900 can receive the characteristic of the breathing of its polymeric membrane own; Cause the width D pixel of the first phase place viewing area 910 and the second phase place viewing area 920 produce to change, and the pixel on can't accurate corresponding panel, and then influence the 3D effect of image.
Yet; Common now detection method is the total length Dtotal of Measurement Phase phase shift films 900; Then 900 of computed phase delay films have the quantity of the first phase place viewing area 910 and the second phase place viewing area 920; With the total length Dtotal of phase retardation film quantity, can obtain the mean breadth Dpixel (average) of each phase place viewing area at last divided by total phase place viewing area.And with Dpixel (average) whether in preset range; And then estimate the performance of phase retardation film 900 in panel; But this detection method also can't be learnt the width D pixel data of each phase place viewing area in this phase retardation film 900, therefore can't accurately estimate each phase place viewing area 3D effect on display panel on this phase retardation film 900.
Summary of the invention
Therefore, in view of the deficiency of prior art, the present invention provides a kind of film detection method and pick-up unit that can more accurately detect the uniformity coefficient of film to be measured.
Propose a kind of film detection method according to one of the object of the invention, be used to detect the film to be measured that is attached at display panel, this film detection method comprises following steps: the reference position of (A) reading film to be measured; (B) on should the line of pixels column direction of display panel, detect images apart from many of acquisitions in this film to be measured with fixed distance; (C) calculate these many and detect in the images the calibrating position and the range difference of this reference position that should the reference position, and a plurality of off-set values of corresponding generation; Reach (D) these a plurality of off-set values of output.
As optional technical scheme, this step (D) is that all off-set values that processing unit is produced are exported with patterned mode.
As optional technical scheme; This film to be measured comprises a plurality of being parallel to each other and the spaced first phase place viewing area and the second phase place viewing area, and the starting point of this reference position is positioned at the position, boundary of the one first phase place viewing area wherein and the contiguous second phase place viewing area thereof.
As optional technical scheme, this reference position is positioned at the respectively center of this detection image.
As optional technical scheme, this calibrating position is to be positioned at the respectively first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
Propose a kind of film detection method according to another object of the present invention, be used to detect the film to be measured that is attached at display panel, this film detection method comprises following steps: the reference image that (A) reads this film to be measured; (B) on should the line of pixels column direction of display panel, detect images apart from many of acquisitions in this film to be measured with fixed distance; (C) should subtract each other with reference to image with this respectively by many detection images, to produce a plurality of difference images; (D) according to this a plurality of difference images, generation is to the side-play amount of uniformity coefficient that should film to be measured; Reach and (E) export this side-play amount.
As optional technical scheme, this step (A) is that acquisition should be with reference to image on this film to be measured.
As optional technical scheme, if the GTG value of this difference image is higher than this preset value, then look this difference image for complete white picture, if the GTG value of this difference image is lower than this preset value, then looks this difference image and be complete black picture.
As optional technical scheme, this step (D) comprises following substep: the GTG value of (D-1) calculating these a plurality of difference images is higher than the quantity of preset value; (D-2) resolution of quantity and these a plurality of detection images that the GTG value of being calculated is higher than the difference image of preset value is divided by, and is higher than the ratio of this preset value in the hope of GTG value in these a plurality of detection images; And (D-3) being higher than the ratio of this preset value according to GTG value in this a plurality of detection images, generation is to side-play amount that should ratio.
Propose a kind of pick-up unit according to another object of the present invention, be used to detect the film to be measured that is attached at display panel, this pick-up unit comprises: storage element stores the reference position of this film to be measured; Image unit is used to this film to be measured to detecting image with fixed distance apart from many of acquisitions on the line of pixels column direction of display panel; Processing unit; Be coupled to this storage element and this image unit; This processing unit reads this reference position from this storage element, and calculates in these a plurality of detection images a plurality of off-set values of the corresponding generation with the range difference of this reference position of calibrating position that should the reference position; And output unit, be coupled to this processing unit, in order to these a plurality of off-set values of output.
As optional technical scheme, this output unit is exported all off-set values that this processing unit produced with patterned mode.
As optional technical scheme, these these a plurality of off-set values of output unit output are to testing circuit, and this testing circuit should a plurality of off-set values compare with the standard difference respectively, to detect this film to be measured.
As optional technical scheme; This film to be measured comprises a plurality of being parallel to each other and the spaced first phase place viewing area and the second phase place viewing area, and the starting point of this reference position is positioned at the position, boundary of the one first phase place viewing area wherein and the contiguous second phase place viewing area thereof.
As optional technical scheme, this reference position is positioned at the respectively center of this detection image.
As optional technical scheme, this calibrating position is to be positioned at the respectively first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
In a purpose a kind of pick-up unit is proposed according to of the present invention; Be used to detect the film to be measured that is attached at display panel; This pick-up unit comprises: image unit is used to this film to be measured to detecting image with fixed distance apart from many of acquisitions on the line of pixels column direction of display panel; Storage element stores the reference image that this image unit captures; Processing unit; Be coupled to this storage element and this image unit; This processing unit reads the reference image of this film to be measured, and should subtract each other with reference to image with this respectively by a plurality of detection images, to produce a plurality of difference images; And, produce side-play amount that should film equality to be measured according to these a plurality of difference images; And output unit, be coupled to this processing unit, in order to export this side-play amount.
As optional technical scheme; Also comprise the counting unit that is coupled to this processing unit; When this processing unit judges that the GTG value of these a plurality of difference images is higher than preset value, control this counting unit counting, the quantity of complete white picture is divided by with the resolution of these a plurality of detection images in this processing unit and the difference image that this counting unit is counted; Be higher than the ratio of this preset value in the hope of GTG value in these a plurality of detection images, will produce this side-play amount according to this ratio again.
As optional technical scheme, this is captured on this film to be measured by this image unit with reference to image, and is stored in this storage element, and this processing unit reads this with reference to image again from this storage element; Perhaps, this is stored in this storage element in advance with reference to image, and this processing unit reads this with reference to image in this storage element.
Benefit of the present invention is, can be affixed on the performance on the display panel by graphical film to be measured, detects film to be measured more accurately, and can be applicable to robotization and detect film to be measured, reduces the manpower that detects and expends, and improves detection efficiency.
Description of drawings
Fig. 1 is the synoptic diagram of the phase retardation film of explanation prior art;
Fig. 2 is the process flow diagram of the film detection method of explanation first embodiment;
Fig. 3 is the synoptic diagram of the pick-up unit of explanation first embodiment;
Fig. 4 is the synoptic diagram of explanation the present invention film to be measured;
Fig. 5 is explanation image unit many synoptic diagram that detect image of acquisition on the line of pixels column direction of the corresponding display panel of film to be measured;
Fig. 6 is explanation wherein four synoptic diagram that detect image that image unit captured;
Fig. 7 is a kind of performance diagram of explanation film equality to be measured;
Fig. 8 is the another kind of performance diagram of explanation film equality to be measured;
Fig. 9 is the synoptic diagram that explanation pick-up unit of the present invention cooperates tester table to use;
Figure 10 is that explanation detects the pairing performance diagram of film to be measured that passes through;
Figure 11 is that explanation detects the pairing performance diagram of unsanctioned film to be measured;
Figure 12 is the process flow diagram of the film detection method of explanation second embodiment;
Figure 13 is the synoptic diagram of the pick-up unit of explanation second embodiment;
Figure 14 is explanation image unit many synoptic diagram that detect image of acquisition on the line of pixels column direction of the corresponding display panel of film to be measured;
Figure 15 be explanation detect image with reference to image overlapping synoptic diagram fully;
Figure 16 is that explanation detects image and the synoptic diagram that occurs deviation with reference to image;
Figure 17 is that explanation detects image and the synoptic diagram that reaches a pixel distance with reference to image deviation;
Figure 18 is the processing unit of explanation second embodiment produces side-play amount according to these a plurality of difference images a process flow diagram;
Figure 19 is the table of comparisons of complete white aspect ratio of explanation and side-play amount.
Embodiment
For making the object of the invention, structure, characteristic and function thereof there are further understanding, cooperate embodiment to specify as follows now.
Consult Fig. 2 to Fig. 4; First embodiment for film detection method of the present invention; This detection method is applied to pick-up unit 100, to detecting in order to the film to be measured 200 that is attached at display panel (figure does not show), in the present embodiment; Pick-up unit 100 is automated optical detection equipment (Automated Optical Inspection; AOI), film 200 to be measured is a phase retardation film, wherein comprises a plurality of being parallel to each other and the spaced first phase place viewing area 210 and the second phase place viewing area 220.
Pick-up unit 100 comprises storage element 10, image unit 20, processing unit 30 and output unit 40.Storage element 10 is a memory body, in order to store the reference position Pref relevant with film to be measured 200.Image unit 20 can be charge coupled cell (Charge Coupled Device, CCD) or CMOS sensor imaging apparatuss such as (CMOS sensor), in order to capture the image of film 200 to be measured.Processing unit 30 is coupled to storage element 10 and image unit 20, in order to 20 picked image of processing image unit, and produces corresponding off-set value.Output unit 40 is coupled to processing unit 30, in order to the output offset value.
Consult Fig. 2, Fig. 3 and Fig. 5, the idiographic flow of the film detection method of this first embodiment is following:
Step S11; Processing unit 30 reads the reference position Pref of film 200 to be measured from storage element 10; Be positioned the position, boundary of the one first phase place viewing area 210 wherein and the contiguous second phase place viewing area 220 thereof earlier; With the starting point of position Pref as a reference, in the present embodiment, on the line of pixels column direction of film 200 corresponding display panels to be measured, begin whenever to read positional information position Pref as a reference again at a distance from 40 pixel distances from starting point; And reference position Pref is arranged in the center of the detection image that step S12 image unit 20 captured; But not as limit, in other embodiment, reference position Pref is the rightmost side of the detection image that image unit 20 is captured among the step S12 or the boundary position of the leftmost side.
Step S12, image unit 20 detect image 50 with fixed distance apart from many of acquisitions on the line of pixels column direction of film 200 corresponding display panels to be measured.Cooperate and consult Fig. 6; The image unit 20 of present embodiment is whenever to detect image 50 (center position that detects center to the detection image that is adjacent of image is 40 pixels) at a distance from one of 40 pixel distances (pixel distance) acquisition; Every is detected image 50 and all comprises at least two first phase place viewing areas 210; And at least two second phase place viewing areas 220; The second phase place viewing area 220 is spaced with the first phase place viewing area 210 respectively, and every size that detects image 50 is all identical.For the ease of explanation; Only illustrate four among Fig. 6 and detect image 50; And label is 51～54 respectively, and the quantity of the first phase place viewing area 210 that comprised in the image and the second phase place viewing area 220 is neither exceeds with present embodiment but spacing distance, picked image number and every detect.
Step S13; Processing unit 30 calculates the calibrating position (promptly being positioned at the first phase place viewing area 210 of detection image 51～54 zone lines and the position, boundary of the second phase place viewing area 220) of corresponding reference position Pref in a plurality of detection images 51～54 and the range difference of reference position Pref, and a plurality of off-set values of corresponding generation.With Fig. 6 is example, and four calibrating positions that detect images 51～54 are D1～D4 with the range difference of reference position Pref respectively.What specify is; Because the reference position Pref of present embodiment is the middle that is set at every image; And in theory; The width of each the first phase place viewing area 210 and the second phase place viewing area 220 is all the width of a pixel in the display panel, therefore, and under the enough situation of the setting accuracy of image unit 20; The calibrating position corresponding with reference position Pref ought to be overlapping fully with reference position Pref in every detection image 51～54; If deviation occurs between the two, represent that promptly the first phase place viewing area 210 or the second phase place viewing area 220 possibly not be the width of a pixel because of fabrication errors or expansion characteristics own cause its width, therefore see through each off-set value and can detect the actual shifts width of learning the first phase place viewing area 210 or the second phase place viewing area 220.Certainly; The calibrating position that is used to judge the width of the first phase place viewing area 210 or the second phase place viewing area 220 also can be set in other the different positions with present embodiment; For example: be positioned at rightmost first phase place viewing area 210 and position, 220 boundary, the second phase place viewing area in the detection image 51～54; Or be positioned at leftmost first phase place viewing area 210 and position, 220 boundary, the second phase place viewing area, do not exceed with the centre position.
Step S14, a plurality of off-set values of output unit 40 outputs.In the present embodiment, output unit 40 is that all off-set values that processing unit 30 is produced are depicted as a performance diagram output, and is as shown in Figure 7.The transverse axis of Fig. 7 is the spacing number of phase place viewing area, and the longitudinal axis is the actual shifts value (μ m) of corresponding phase viewing area, and Fig. 7 can show the off-set value profile of whole film 200 to be measured, and the variation that sees through curve is able to judge the uniformity coefficient of film 200 to be measured.
Consult Fig. 5 to Fig. 7; In the present embodiment; Image unit 20 is to detect image 50 with fixed distance apart from acquisition from the wherein side (like the left side of film 200 to be measured) of film 200 to be measured toward the direction of opposite side (like the right side of film 200 to be measured) wherein; Yet the detection image 50 of each acquisition; Its corresponding off-set value that produces can for the width error of each the first phase place viewing area 210 and the second phase place viewing area 220 in the distance (for example 40 pixel distances) with, therefore, 50 corresponding deviates that produce of the detection image in contiguous film to be measured 200 left sides can be lower than 50 corresponding deviates that produce of detection image on contiguous film to be measured 200 right sides.Certainly; Also can be positioned the film to be measured 200 first phase place viewing area 210 and the position, boundary of the second phase place viewing area 220 in the middle of; Image unit 20 position that can have a common boundary is the center; The two opposition sides acquisition of the past film 200 to be measured respectively that one the first from left is right detects image 50, and so, film 200 middle 50 corresponding deviates that produce of detection image contiguous to be measured then can be lower than the deviates of 50 corresponding generations of detection image of 200 liang of opposition sides of contiguous film to be measured; The performance diagram that its output unit 40 is exported can be as shown in Figure 8, and the present invention is not exceeded with present embodiment.
In practical application; The pick-up unit 100 of present embodiment can be used with tester table (figure does not show); As shown in Figure 9; The film of whole volume sees through the conveying of tester table and cuts and form the film to be measured 200 of the display panel that is fit to different size, and pick-up unit 100 utilizes above-mentioned detection method again, respectively to two opposition sides (for example two T point position) of each film 200 to be measured respectively on the line of pixels column direction of corresponding display panel with fixed distance apart from the many detections of acquisition images; And respectively a plurality of off-set values that produced are depicted as two performance diagrams, be able to detect the uniformity coefficient of film 200 to be measured by two performance diagrams for the tester.If a plurality of off-set values are shown in figure 10 all less than the typical curve L1 of the specification of corresponding display panel, then be regarded as detecting and pass through, tester table is delivered to the non-defective unit district with film 200 to be measured; Otherwise, if a plurality of off-set values have part overgauge curve L1, shown in frame of broken lines part among Figure 11, then being regarded as detecting and not passing through, tester table is delivered to film 200 to be measured repairing or scraps the district.So can reach more accurately and detect more quickly the purpose of each film 200 to be measured.
What specify is; Detect in order to reach full-automatic, output unit 40 also can with all off-set values export to testing circuit (figure do not show, its can in build or be placed on processing unit 30); Testing circuit in order to a plurality of off-set values respectively with the standard difference of corresponding typical curve L1 (like Figure 10 and shown in Figure 11; Its value is 150) compare, if all off-set value is all less than the standard difference, i.e. expression detects to be passed through; If at least one off-set value overgauge difference is arranged, i.e. expression detects not to be passed through, and tester table cooperates the comparative result of testing circuit that film 200 to be measured is delivered to the corresponding region more afterwards, so can more save the manpower of test, reduces testing cost.In addition, the position of pick-up unit 100 pick-up images also is not limited to two opposition sides of film 200 to be measured, can be two opposition sides and the centre position of film 200 to be measured, or any a plurality of position, to detect each film 200 to be measured more accurately.
Consult Figure 12 and Figure 13; Second embodiment for film detection method of the present invention; In the present embodiment, detection method is applied to pick-up unit 100 ', and pick-up unit 100 ' comprises storage element 10 ', image unit 20 ', processing unit 30 ', output unit 40 ' and counting unit 60 '.Storage element 10 ' is a memory body, in order to store image unit 20 ' institute's picked image.Image unit 20 ' can be charge coupled cell (CCD) or CMOS sensor imaging apparatuss such as (CMOS sensor), in order to capture the image of film 200 to be measured.Processing unit 30 ' is coupled to storage element 10 ' and image unit 20 ', in order to processing image unit 20 ' institute's picked image, and produces corresponding off-set value.Output unit 40 ' is coupled to processing unit 30 ', in order to the output offset amount.Counting unit 60 ' is coupled to processing unit 30 ', and its function is in follow-up explanation.
Consult Figure 12 to Figure 14, the idiographic flow of the film detection method of this second embodiment is following:
Step S21, image unit 20 ' capture one with reference to image Image (ref) on film 200 to be measured, and it is stored in the storage element 10 ', read for processing unit 30 '.
Step S22, image unit 20 ' detect image Image (N) with fixed distance apart from many of acquisitions on the line of pixels column direction of film 200 corresponding display panels to be measured, wherein N is a positive integer.The image unit 20 ' of present embodiment also is whenever to detect image at a distance from 40 one of pixel distance acquisitions, and every image capturing range size that detects image is all identical.
Step S23, processing unit 30 ' detect image Image (N) with many and subtract each other with the reference image Image (ref) that is stored in the storage element 10 ' respectively, and be to produce a plurality of difference image Image_delta, extremely shown in Figure 17 like Figure 15.
Consult Figure 15 to Figure 17; If the width of each the first phase place viewing area 210 and the second phase place viewing area 220 is with identical with reference to the width of each the first phase place viewing area 210 and the second phase place viewing area 220 among the image Image (ref) among the detection image Image (N); After then both subtracted each other, difference image Image_delta can help black picture, and was shown in figure 15; If occur deviation between the two; Represent that promptly the first phase place viewing area 210 or the second phase place viewing area 220 possibly not be the width of a pixel because of fabrication errors causes its width, then the white stripes picture can occur among the difference image Image_delta, shown in figure 16; If detect the first phase place viewing area 210 and the second phase place viewing area 220 and staggered fully among the image Image (N) with reference to first phase place viewing area 210 among the image Image (ref) and 220 positions, the second phase place viewing area; Be that deviation reaches a pixel distance, then difference image Image_delta can help white picture, and is shown in figure 17.Can know that by Figure 15 to Figure 17 the ratio that sees through white picture among the difference image Image_delta can be judged the developed width that detects the first phase place viewing area 210 among the image Image (N) or the second phase place viewing area 220.
Therefore consult Figure 12 and Figure 13, step S24, processing unit 30 ' produce the side-play amount of the uniformity coefficient of corresponding film to be measured 200 according to a plurality of difference image Image_delta.At length, cooperate and consult Figure 18, step S24 also comprises following substep:
Step S241, processing unit 30 ' judge respectively whether the GTG of a plurality of difference image Image_delta is higher than preset value, if; Execution in step S242 then; Processing unit 30 ' parallax value image Image_delta is complete white picture, and control counting unit 60 ' counting, execution in step S244 afterwards; If not, execution in step S243 then, processing unit 30 ' parallax value image Image_delta are complete black picture, execution in step S244 afterwards.
The quantity of complete white picture is divided by with the resolution (as 640 * 480) that detects image Image (N) in the difference image that step S244, processing unit 30 ' count counting unit 60 ', in the hope of among a plurality of detection image Image (N) be the ratio of picture in vain entirely.
Step S245, processing unit 30 ' is the ratio of complete white picture according to a plurality of detection image Image (N), produces the side-play amount of corresponding ratio.In the present embodiment; Processing unit 30 ' is to produce corresponding side-play amount according to the complete white aspect ratio like Figure 19 with the table of comparisons of side-play amount; Shown in figure 19; Its transverse axis is the ratio of complete white picture, and the longitudinal axis is side-play amount (μ m), the curve that processing unit 30 ' sees through among Figure 19; Can learn how many side-play amounts what can cause for the full quantity of the detection image Image (N) of picture in vain, and its side-play amount is a plurality of detection image Image (N) are multiplied by pick-up image for the ratio of complete white picture a spacing distance.
After step S245 produces side-play amount, can execution in step S25.
Step S25, output unit 40 ' output offset amount is to judge the uniformity coefficient of film 200 to be measured according to side-play amount.
What specify is; The film detection method of this second embodiment is compared to first embodiment; Different is that the film detection method of present embodiment is to work as image for referencial use prior to image of acquisition on the film 200 to be measured, and it is stored in the storage element 10 '; Then detect image Image (N) from many of the line of pixels column direction acquisitions of film 200 corresponding display panels to be measured again; And to be benchmark with reference to image, to detect image Image (N) with all and compare, its corresponding side-play amount that produces can be reacted the uniformity coefficient of film 200 to be measured equally.
In addition; Consult Figure 12, Figure 13 and Figure 15; The reference image Image (ref) of present embodiment also can be stored in the storage element 10 ' in advance; And in step S21, processing unit 30 ' can read from storage element 10 ' with reference to image Image (ref) and compare with detecting image Image (N), does not exceed with present embodiment.
In sum; Film detection method of the present invention is compared with the reference position by the calibrating position that many are detected in the image 50, to produce a plurality of off-set values of reacting the uniformity coefficient of film 200 to be measured; Or many detected image Image (N) and compare with reference to image Image (ref); To produce the side-play amount of the uniformity coefficient that can react film 200 to be measured, so difference detection method can be affixed on the performance on the display panel by graphical film 200 to be measured; Detect film 200 to be measured more accurately, so can reach the object of the invention really.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is merely the example of embodiment of the present invention.Must be pointed out that the embodiment that has disclosed does not limit scope of the present invention.On the contrary, change and retouching not breaking away from the spirit and scope of the present invention to be done all belong to scope of patent protection of the present invention.
Claims (18)
1. a film detection method is used to detect the film to be measured that is attached at display panel, it is characterized in that, this film detection method comprises following steps:
(A) read the reference position of this film to be measured;
(B) on should the line of pixels column direction of display panel, detect images apart from many of acquisitions in this film to be measured with fixed distance;
(C) calculate these many and detect in the images the calibrating position and the range difference of this reference position that should the reference position, and a plurality of off-set values of corresponding generation; And
(D) these a plurality of off-set values of output.
2. film detection method as claimed in claim 1 is characterized in that, this step (D) is that all off-set values that processing unit is produced are exported with patterned mode.
3. film detection method as claimed in claim 1; It is characterized in that; This film to be measured comprises a plurality of being parallel to each other and the spaced first phase place viewing area and the second phase place viewing area, and the starting point of this reference position is positioned at the position, boundary of the one first phase place viewing area wherein and the contiguous second phase place viewing area thereof.
4. film detection method as claimed in claim 3 is characterized in that, this reference position is positioned at the respectively center of this detection image.
5. film detection method as claimed in claim 4 is characterized in that, this calibrating position is to be positioned at the respectively first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
6. a film detection method is used to detect the film to be measured that is attached at display panel, it is characterized in that, this film detection method comprises following steps:
(A) read the reference image of this film to be measured;
(B) on should the line of pixels column direction of display panel, detect images apart from many of acquisitions in this film to be measured with fixed distance;
(C) should subtract each other with reference to image with this respectively by many detection images, to produce a plurality of difference images;
(D) according to this a plurality of difference images, generation is to the side-play amount of uniformity coefficient that should film to be measured; And
(E) export this side-play amount.
7. film detection method as claimed in claim 6 is characterized in that, this step (A) is that acquisition should be with reference to image on this film to be measured.
8. film detection method as claimed in claim 6; It is characterized in that,, then look this difference image and be complete white picture if the GTG value of this difference image is higher than this preset value; If the GTG value of this difference image is lower than this preset value, then looks this difference image and be complete black picture.
9. film detection method as claimed in claim 6 is characterized in that, this step (D) comprises following substep:
(D-1) the GTG value of calculating these a plurality of difference images is higher than the quantity of preset value;
(D-2) resolution of quantity and these a plurality of detection images that the GTG value of being calculated is higher than the difference image of preset value is divided by, and is higher than the ratio of this preset value in the hope of GTG value in these a plurality of detection images; And
(D-3) be higher than the ratio of this preset value according to GTG value in this a plurality of detection images, generation is to side-play amount that should ratio.
10. a pick-up unit is used to detect the film to be measured that is attached at display panel, it is characterized in that this pick-up unit comprises:
Storage element stores the reference position of this film to be measured;
Image unit is used to this film to be measured to detecting image with fixed distance apart from many of acquisitions on the line of pixels column direction of display panel;
Processing unit; Be coupled to this storage element and this image unit; This processing unit reads this reference position from this storage element, and calculates in these a plurality of detection images a plurality of off-set values of the corresponding generation with the range difference of this reference position of calibrating position that should the reference position; And
Output unit is coupled to this processing unit, in order to these a plurality of off-set values of output.
11. pick-up unit as claimed in claim 10 is characterized in that, this output unit is exported all off-set values that this processing unit produced with patterned mode.
12. pick-up unit as claimed in claim 10 is characterized in that, these these a plurality of off-set values of output unit output are to testing circuit, and this testing circuit should a plurality of off-set values compare with the standard difference respectively, to detect this film to be measured.
13. pick-up unit as claimed in claim 10; It is characterized in that; This film to be measured comprises a plurality of being parallel to each other and the spaced first phase place viewing area and the second phase place viewing area, and the starting point of this reference position is positioned at the position, boundary of the one first phase place viewing area wherein and the contiguous second phase place viewing area thereof.
14. pick-up unit as claimed in claim 13 is characterized in that, this reference position is positioned at the respectively center of this detection image.
15. pick-up unit as claimed in claim 14 is characterized in that, this calibrating position is to be positioned at the respectively first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
16. a pick-up unit is used to detect the film to be measured that is attached at display panel, it is characterized in that this pick-up unit comprises:
Image unit is used to this film to be measured to detecting image with fixed distance apart from many of acquisitions on the line of pixels column direction of display panel;
Storage element stores the reference image that this image unit captures;
Processing unit; Be coupled to this storage element and this image unit; This processing unit reads the reference image of this film to be measured, and should subtract each other with reference to image with this respectively by a plurality of detection images, to produce a plurality of difference images; And, produce side-play amount that should film equality to be measured according to these a plurality of difference images; And
Output unit is coupled to this processing unit, in order to export this side-play amount.
17. pick-up unit as claimed in claim 16; It is characterized in that; Also comprise the counting unit that is coupled to this processing unit; When this processing unit judges that the GTG value of these a plurality of difference images is higher than preset value, control this counting unit counting, the quantity of complete white picture is divided by with the resolution of these a plurality of detection images in this processing unit and the difference image that this counting unit is counted; Be higher than the ratio of this preset value in the hope of GTG value in these a plurality of detection images, will produce this side-play amount according to this ratio again.
18. pick-up unit as claimed in claim 16 is characterized in that, this is captured on this film to be measured by this image unit with reference to image, and is stored in this storage element, and this processing unit reads this with reference to image again from this storage element; Perhaps, this is stored in this storage element in advance with reference to image, and this processing unit reads this with reference to image in this storage element.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04198744A (en) * | 1990-11-28 | 1992-07-20 | Sekisui Chem Co Ltd | Surface state inspecting device |
| WO2008015311A1 (en) * | 2006-08-03 | 2008-02-07 | Chun Ye | Method and equipment for measurement of intact pulp fibers |
| JP2008241469A (en) * | 2007-03-27 | 2008-10-09 | Fujinon Corp | Defect inspection apparatus |
| TW201250219A (en) * | 2011-06-10 | 2012-12-16 | Benq Materials Corp | Detecting method and system for 3D micro-retardation film |
| TW201310012A (en) * | 2011-08-31 | 2013-03-01 | Fujifilm Corp | Apparatus and method of detecting defect for patterned retardation film and method of manufacturing patterned retardation film |
-
2012
- 2012-05-02 CN CN201210133192.4A patent/CN102680472B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04198744A (en) * | 1990-11-28 | 1992-07-20 | Sekisui Chem Co Ltd | Surface state inspecting device |
| WO2008015311A1 (en) * | 2006-08-03 | 2008-02-07 | Chun Ye | Method and equipment for measurement of intact pulp fibers |
| JP2008241469A (en) * | 2007-03-27 | 2008-10-09 | Fujinon Corp | Defect inspection apparatus |
| TW201250219A (en) * | 2011-06-10 | 2012-12-16 | Benq Materials Corp | Detecting method and system for 3D micro-retardation film |
| TW201310012A (en) * | 2011-08-31 | 2013-03-01 | Fujifilm Corp | Apparatus and method of detecting defect for patterned retardation film and method of manufacturing patterned retardation film |
Non-Patent Citations (2)
| Title |
|---|
| J. E. HAYDEN,S. D. JACOBS: "Automated spatially scanning ellipsometer for retardation measurements of transparent materials", 《APPLIED OPTICS》 * |
| 沈奕，王勇竞，王琳静等: "延迟膜光谱分析测试***及应用", 《光学精密工程》 * |
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