CN102680472B - Method and device for detecting film - Google Patents
Method and device for detecting film Download PDFInfo
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- CN102680472B CN102680472B CN201210133192.4A CN201210133192A CN102680472B CN 102680472 B CN102680472 B CN 102680472B CN 201210133192 A CN201210133192 A CN 201210133192A CN 102680472 B CN102680472 B CN 102680472B
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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, relevant for a kind of detection method and pick-up unit, refers to a kind of film detection method and pick-up unit especially.
Background technology
Consulting Fig. 1, is the existing phase retardation film 900 that is attached at display panel (not shown), and major function is for producing 3D image.This phase retardation film 900 comprises a plurality of the first phase place viewing areas 910 and a plurality of the second phase place viewing area 920, and these a plurality of first phase place viewing areas 910 and this plurality of the second phase place viewing areas 920 are parallel to each other and are spaced.In actual applications, because phase retardation film 900 can be subject to 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 pixel on cannot accurate corresponding panel, and then affect the 3D effect of image.
Yet, common detection method is to measure the total length Dtotal of phase retardation film 900 now, follow the quantity of computed phase delay film 900 has the first phase place viewing area 910 and the second phase place viewing area 920, the last quantity divided by total phase place viewing area by the total length Dtotal of phase retardation film, can obtain the mean breadth Dpixel (average) of each phase place viewing area.And with Dpixel (average) whether in preset range, and then estimate phase retardation film 900 in the performance of panel, but this detection method also cannot be learnt the width D pixel data of each phase place viewing area in this phase retardation film 900, therefore cannot 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 deficiencies in the prior art, the 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.
According to one of object of the present invention, propose a kind of film detection method, for detection of 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) in this film to be measured, to capturing multiple with the spacing distance of fixing on should the Pixel arrangement direction of display panel, detect images; (C) calculate these multiple detect in images should the calibrating position of reference position and the range difference of this reference position, and a plurality of off-set values of corresponding generation; And (D) export the plurality of off-set value.
As optional technical scheme, this step (D) is that all off-set values that processing unit is produced are exported in patterned mode.
As optional technical scheme, this film to be measured comprises a plurality of being parallel to each other and spaced the 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 one first phase place viewing area wherein and contiguous the 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 respectively the first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
According to another object of the present invention, propose a kind of film detection method, for detection of 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) in this film to be measured, to capturing multiple with the spacing distance of fixing on should the Pixel arrangement direction of display panel, detect images; (C) by this, multiple detection images subtract each other with reference to image with this respectively, to produce a plurality of difference images; (D), according to the plurality of difference image, produce the side-play amount to uniformity coefficient that should film to be measured; And (E) export this side-play amount.
As optional technical scheme, this step (A) is to capture this with reference to image on this film to be measured.
As optional technical scheme, if the GTG value of this difference image higher than this preset value, is looked this difference image for complete white picture, if the GTG value of this difference image, lower than this preset value, is complete black picture depending on this difference image.
As optional technical scheme, this step (D) comprises following sub-step: (D-1) calculate the GTG value of the plurality of difference image higher than the quantity of preset value; (D-2) calculated GTG value is divided by higher than the quantity of the difference image of preset value and the resolution of the plurality of detection image, in the hope of GTG value in the plurality of detection image higher than the ratio of this preset value; And (D-3) according to GTG value in the plurality of detection image higher than the ratio of this preset value, produce side-play amount that should ratio.
According to another object of the present invention, propose a kind of pick-up unit, for detection of 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 capturing multiple detection images with the spacing distance of fixing in the Pixel arrangement 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 the plurality of detection image a plurality of off-set values of calibrating position generation corresponding to the range difference of this reference position that should reference position; And output unit, be coupled to this processing unit, in order to export the plurality of off-set value.
As optional technical scheme, all off-set values that this output unit produces this processing unit are exported in patterned mode.
As optional technical scheme, this output unit is exported the plurality of off-set value to testing circuit, and this testing circuit compares the plurality of off-set value respectively with standard deviation, 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 spaced the 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 one first phase place viewing area wherein and contiguous the 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 respectively the first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
According to of the present invention, in an object, a kind of pick-up unit is proposed, for detection of 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 capturing multiple detection images with the spacing distance of fixing in the Pixel arrangement 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 the plurality of detection image is subtracted each other with reference to image with this respectively, to produce a plurality of difference images, and according to the plurality of difference image, produce side-play amount that should film equality to be measured; 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, the GTG value that judges the plurality of difference image when this processing unit is during higher than preset value, control this counting unit counting, in this processing unit difference image that this counting unit is counted, the complete white quantity of picture and the resolution of the plurality of detection image are divided by, in the hope of GTG value in the plurality of detection image, higher than the ratio of this preset value, then will produce this side-play amount according to this ratio.
As optional technical scheme, this is captured by this image unit with reference to image on this film to be measured, and is stored in this storage element, and this processing unit reads this with reference to image again from this storage element; Or this is stored in this storage element in advance with reference to image, 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 display panel by graphical film to be measured, detects more accurately film to be measured, and can be applicable to robotization and detect film to be measured, reduces the manpower detecting and expends, and improves detection efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the phase retardation film of explanation prior art;
Fig. 2 is the process flow diagram of the film detection method of explanation the first embodiment;
Fig. 3 is the schematic diagram of the pick-up unit of explanation the first embodiment;
Fig. 4 is the schematic diagram of explanation the present invention film to be measured;
Fig. 5 is that explanation image unit captures the schematic diagram that multiple detect image in the Pixel arrangement direction of the corresponding display panel of film to be measured;
Fig. 6 is wherein four schematic diagram that detect image that explanation image unit captures;
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 schematic diagram that explanation pick-up unit of the present invention coordinates tester table to use;
Figure 10 is that explanation detects the corresponding performance diagram of film to be measured passing through;
Figure 11 is that explanation detects the corresponding performance diagram of unsanctioned film to be measured;
Figure 12 is the process flow diagram of the film detection method of explanation the second embodiment;
Figure 13 is the schematic diagram of the pick-up unit of explanation the second embodiment;
Figure 14 is that explanation image unit captures the schematic diagram that multiple detect image in the Pixel arrangement direction of the corresponding display panel of film to be measured;
Figure 15 be explanation detect image with reference to the completely overlapping schematic diagram of image;
Figure 16 is that explanation detects image and with reference to image, occurs the schematic diagram of deviation;
Figure 17 is that explanation detects image and with reference to image deviation, reaches the schematic diagram of a pixel distance;
Figure 18 is that the processing unit of explanation the second embodiment produces the process flow diagram of side-play amount according to the plurality of difference image;
Figure 19 is the table of comparisons of the complete white aspect ratio of explanation and side-play amount.
Embodiment
For making that object of the present invention, structure, feature and function thereof are had to further understanding, hereby coordinate embodiment to be described in detail as follows.
Consult Fig. 2 to Fig. 4, the first embodiment for film detection method of the present invention, this detection method is applied to pick-up unit 100, for detecting in order to be attached at the film to be measured 200 of display panel (not shown), in the present embodiment, pick-up unit 100 is automated optical detection equipment (Automated Optical Inspection, AOI), film 200 to be measured is phase retardation film, wherein comprises a plurality of being parallel to each other and spaced the 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 memory body, in order to store the reference position Pref relevant with film 200 to be measured.Image unit 20 can be the imaging apparatuss such as charge coupled cell (Charge Coupled Device, CCD) or CMOS (Complementary Metal Oxide Semiconductor) sensor (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, the image capturing in order to process image unit 20, and produce corresponding off-set value.Output unit 40 is coupled to processing unit 30, in order to output offset value.
Consult Fig. 2, Fig. 3 and Fig. 5, the idiographic flow of the film detection method of this first embodiment is as follows:
Step S11, processing unit 30 reads the reference position Pref of film 200 to be measured from storage element 10, first be positioned the position, boundary of one first phase place viewing area 210 wherein and contiguous the second phase place viewing area 220 thereof, using as the starting point with reference to position Pref, in the present embodiment, in the Pixel arrangement direction of film 200 corresponding display panels to be measured, from starting point, start to read a positional information as with reference to position Pref every 40 pixel distances again, and reference position Pref is arranged in the center of the detection image that step S12 image unit 20 captures, but not as limit, in other embodiment, reference position Pref is the rightmost side of detection image or the boundary position of the leftmost side that in step S12, image unit 20 captures.
Step S12, image unit 20 captures multiple with the spacing distance of fixing and detects image 50 in the Pixel arrangement direction of film 200 corresponding display panels to be measured.Coordinate and consult Fig. 6, the image unit 20 of the present embodiment is to detect image 50 (center of detection image to the center position of the detection image being adjacent is 40 pixels) every one of 40 pixel distances (pixel distance) acquisition, every is detected image 50 and all comprises at least two the first phase place viewing areas 210, and at least two the 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 convenience of explanation, in Fig. 6, only illustrate four and detect image 50, and label is 51～54 respectively, but the first phase place viewing area 210 comprising in the image number of spacing distance, acquisition and every detection image and the quantity of the second phase place viewing area 220 are neither limited with the present embodiment.
Step S13, processing unit 30 calculates the calibrating position (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.Take Fig. 6 as example, and four calibrating positions that detect image 51～54 are D1～D4 with the range difference of reference position Pref respectively.What specify is, because the reference position Pref of the present embodiment is the middle that is set at every image, and in theory, the width of each first phase place viewing area 210 and the second phase place viewing area 220 is all the width of a pixel in display panel, therefore, in the situation that the setting accuracy of image unit 20 is enough, in every detection image 51～54, the calibrating position corresponding with reference position Pref ought to be completely overlapping with reference position Pref, if there is deviation between the two, represent that the first phase place viewing area 210 or the second phase place viewing area 220 may not be the width of a pixel because 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, for judging that the calibrating position of 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 from the present embodiment, for example: detect in image 51～54 and be positioned at rightmost the first phase place viewing area 210 and 220 positions, boundary, the second phase place viewing area, or be positioned at leftmost the first phase place viewing area 210 and 220 positions, boundary, the second phase place viewing area, with centre position, be not limited.
Step S14, a plurality of off-set values of output unit 40 output.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, as shown in Figure 7.The transverse axis of Fig. 7 is the spacing number of phase place viewing area, the longitudinal axis is the actual shifts value (μ m) of corresponding phase viewing area, Fig. 7 can show that the off-set value characteristic of whole film 200 to be measured distributes, and the variation that sees through curve is judged the uniformity coefficient of film 200 to be measured.
Consult Fig. 5 to Fig. 7, in the present embodiment, image unit 20 is with the spacing distance acquisition of fixing, to detect image 50 from the direction of the past wherein opposite side (as the right side of film 200 to be measured) of a wherein side (as the left side of film 200 to be measured) of film 200 to be measured, yet the detection image 50 of each acquisition, its corresponding off-set value producing can for example, for the width error of each first phase place viewing area 210 and the second phase place viewing area 220 in distance (40 pixel distances) and, therefore, 50 corresponding deviates that produce of 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 position, boundary of the first middle phase place viewing area 210 of film 200 to be measured and the second phase place viewing area 220, image unit 20 can have a common boundary centered by position, two opposition sides acquisitions of the past film 200 to be measured respectively on one the first from left right side detect images 50, so, 50 corresponding deviates that produce of detection image in the middle of film 200 contiguous to be measured can be lower than 50 corresponding deviates that produce 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, the present invention is not limited with the present embodiment.
In practical application, the pick-up unit 100 of the present embodiment can be used in conjunction with tester table (not shown), as shown in Figure 9, the film of entire volume sees through the conveying of tester table and cuts and form the film to be measured 200 of the display panel that is applicable to different size, the above-mentioned detection method of pick-up unit 100 recycling, respectively for example, for two opposition sides (two T point positions) of each film 200 to be measured spacing distance acquisition images that detect to fix in the Pixel arrangement direction of corresponding display panel respectively more, and respectively produced a plurality of off-set values are depicted as to two performance diagrams, for tester, be able to detect by two performance diagrams the uniformity coefficient of film 200 to be measured.If a plurality of off-set values are all less than the typical curve L1 of the specification of corresponding display panel, as shown in figure 10, be considered as detecting and pass through, tester table is delivered to non-defective unit district by film 200 to be measured; Otherwise, if a plurality of off-set value has part to be greater than typical curve L1, as shown in dotted line frame part in Figure 11, being considered as detecting and not passing through, tester table is delivered to film 200 to be measured repairing or scraps district.So can reach more accurately and detect more quickly the object of each film 200 to be measured.
What specify is, in order to reach full-automatic, detect, output unit 40 also can export all off-set values to testing circuit, and (figure does not show, it can be built-in or be placed on processing unit 30), testing circuit in order to by a plurality of off-set values respectively with the standard deviation of corresponding typical curve L1 (as shown in Figures 10 and 11, its value is 150) compare, if all off-set value is all less than standard deviation, represent to detect to pass through; If there is at least one off-set value to be greater than standard deviation, represent to detect not pass through, tester table coordinates the comparative result of testing circuit that film 200 to be measured is delivered to 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 is also 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 number of position, to detect more accurately each film 200 to be measured.
Consult Figure 12 and Figure 13, the 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 memory body, the image capturing in order to store image unit 20 '.Image unit 20 ' can be the imaging apparatuss such as charge coupled cell (CCD) or CMOS (Complementary Metal Oxide Semiconductor) sensor (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 ', the image capturing in order to process image unit 20 ', and produce corresponding off-set value.Output unit 40 ' is coupled to processing unit 30 ', in order to 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 as follows:
Step S21, image unit 20 ' captures one with reference to image Image (ref) on film 200 to be measured, and is stored in storage element 10 ', for processing unit 30 ', reads.
Step S22, image unit 20 ' captures multiple with the spacing distance of fixing and detects image Image (N) in the Pixel arrangement direction of film 200 corresponding display panels to be measured, and wherein N is positive integer.The image unit 20 ' of the present embodiment is also to detect image every 40 one of pixel distance acquisitions, and every image capturing range size that detects image is all identical.
Step S23, processing unit 30 ' detects image Image (N) by multiple and subtracts each other with the reference image Image (ref) being stored in storage element 10 ' respectively, to produce a plurality of difference image Image_delta, as shown in Figure 15 to Figure 17.
Consult Figure 15 to Figure 17, if the width of each first phase place viewing area 210 and the second phase place viewing area 220 is with identical with reference to the width of each first phase place viewing area 210 and the second phase place viewing area 220 in image Image (ref) in detection image Image (N), after both subtract each other, difference image Image_delta can help black picture, as shown in figure 15, if there is deviation between the two, represent that the first phase place viewing area 210 or the second phase place viewing area 220 may not be the width of a pixel because fabrication errors causes its width, in difference image Image_delta, there will be white stripes picture, as shown in figure 16, if detect the first phase place viewing area 210 and the second phase place viewing area 220 and completely staggered with reference to the first phase place viewing area 210 in image Image (ref) and 220 positions, the second phase place viewing area in image Image (N), be that deviation reaches a pixel distance, difference image Image_delta can help white picture, as shown in figure 17.From Figure 15 to Figure 17, the ratio that sees through white picture in difference image Image_delta can judge the developed width that detects the first phase place viewing area 210 in image Image (N) or the second phase place viewing area 220.
Therefore consult Figure 12 and Figure 13, step S24, processing unit 30 ', according to a plurality of difference image Image_delta, produces the side-play amount of the uniformity coefficient of corresponding film to be measured 200.At length, coordinate and consult Figure 18, step S24 also comprises following sub-step:
Step S241, processing unit 30 ' judges that respectively whether the GTG of a plurality of difference image Image_delta is higher than preset value, if, perform step S242, processing unit 30 ' parallax value image Image_delta is complete white picture, and controls counting unit 60 ' counting, performs step afterwards S244; If not, perform step S243, processing unit 30 ' parallax value image Image_delta is complete black picture, performs step afterwards S244.
Step S244, in the difference image that processing unit 30 ' is counted counting unit 60 ', the quantity of complete white picture is divided by with the resolution (as 640 * 480) that detects image Image (N), in the hope of in a plurality of detection image Image (N) being the ratio of complete white picture.
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 as Figure 19 with the table of comparisons of side-play amount, as shown in figure 19, its transverse axis is the ratio of complete white picture, the longitudinal axis is side-play amount (μ m), the curve that processing unit 30 ' sees through in Figure 19, can learn how many is that the full quantity of the detection image Image (N) of picture in vain can cause how many side-play amounts, and its side-play amount is that a plurality of detection image Image (N) are the spacing distance that the full ratio of picture is in vain multiplied by pick-up image.
In step S245, produce after side-play amount, can perform step S25.
Step S25, output unit 40 ' output offset amount, 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 the first embodiment, different is, the film detection method of the present embodiment is prior to capturing an image on film 200 to be measured when image for referencial use, and be stored in storage element 10 ', then from the Pixel arrangement direction of film 200 corresponding display panels to be measured, capture multiple detection image Image (N) again, and to take with reference to image be benchmark, compare with all detection image Image (N), its corresponding side-play amount producing 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 the present embodiment also can be stored in storage element 10 ' in advance, and in step S21, processing unit 30 ' can read with reference to image Image (ref) and compare with detecting image Image (N) from storage element 10 ', with the present embodiment, is not limited.
In sum, film detection method of the present invention, by the calibrating position that multiple are detected in image 50, compare with reference position, to produce a plurality of off-set values of reacting the uniformity coefficient of film 200 to be measured, or multiple are detected to 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, difference detection method like this, can be affixed on the performance on display panel by graphical film 200 to be measured, detect more accurately film 200 to be measured, therefore really can reach object of the present invention.
The present invention is described by above-mentioned related embodiment, yet above-described embodiment is only for implementing example of the present invention.Must be pointed out that, the embodiment having disclosed does not limit the scope of the invention.On the contrary, the change done without departing from the spirit and scope of the present invention and retouching, all belong to scope of patent protection of the present invention.
Claims (18)
1. a film detection method, the film to be measured for detection of being attached at display panel, is characterized in that, this film detection method comprises following steps:
(A) read the reference position of this film to be measured;
(B) in this film to be measured, to capturing multiple with the spacing distance of fixing on should the Pixel arrangement direction of display panel, detect images;
(C) calculate these multiple detect in images should the calibrating position of reference position and the range difference of this reference position, and a plurality of off-set values of corresponding generation; And
(D) export the plurality of off-set value.
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 in 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 spaced the 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 second phase place viewing area of this first phase place viewing area and vicinity 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 positioned at respectively the 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, the film to be measured for detection of being attached at display panel, is characterized in that, this film detection method comprises following steps:
(A) read the reference image of this film to be measured;
(B) in this film to be measured, to capturing multiple with the spacing distance of fixing on should the Pixel arrangement direction of display panel, detect images;
(C) by this, multiple detection images subtract each other with reference to image with this respectively, to produce a plurality of difference images;
(D), according to the plurality of difference image, produce the side-play amount to 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 to capture this with reference to image on this film to be measured.
8. film detection method as claimed in claim 6, is characterized in that, if the GTG value of this difference image higher than preset value, is looked this difference image for complete white picture, if the GTG value of this difference image, lower than this preset value, is complete black picture depending on this difference image.
9. film detection method as claimed in claim 6, is characterized in that, this step (D) comprises following sub-step:
(D-1) calculate the GTG value of the plurality of difference image higher than the quantity of preset value;
(D-2) calculated GTG value is divided by higher than the quantity of the difference image of preset value and the resolution of the plurality of detection image, in the hope of GTG value in the plurality of detection image higher than the ratio of this preset value; And
(D-3) according to GTG value in the plurality of detection image higher than the ratio of this preset value, produce side-play amount that should ratio.
10. a pick-up unit, the film to be measured for detection of being attached at display panel, 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 capturing multiple detection images with the spacing distance of fixing in the Pixel arrangement 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 the plurality of detection image a plurality of off-set values of calibrating position generation corresponding to the range difference of this reference position that should reference position; And
Output unit, is coupled to this processing unit, in order to export the plurality of off-set value.
11. pick-up units as claimed in claim 10, is characterized in that, all off-set values that this output unit produces this processing unit are exported in patterned mode.
12. pick-up units as claimed in claim 10, is characterized in that, this output unit is exported the plurality of off-set value to testing circuit, and this testing circuit compares the plurality of off-set value respectively with standard deviation, to detect this film to be measured.
13. pick-up units 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 spaced the 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 second phase place viewing area of this first phase place viewing area and vicinity thereof.
14. pick-up units 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 units as claimed in claim 14, is characterized in that, this calibrating position is positioned at respectively the first phase place viewing area of this detection image zone line and the position, boundary of the second phase place viewing area.
16. 1 kinds of pick-up units, the film to be measured for detection of being attached at display panel, is characterized in that, this pick-up unit comprises:
Image unit, is used to this film to be measured to capturing multiple detection images with the spacing distance of fixing in the Pixel arrangement 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 the plurality of detection image is subtracted each other with reference to image with this respectively, to produce a plurality of difference images, and according to the plurality of difference image, produce side-play amount that should film equality to be measured; And
Output unit, is coupled to this processing unit, in order to export this side-play amount.
17. pick-up units as claimed in claim 16, it is characterized in that, also comprise the counting unit that is coupled to this processing unit, the GTG value that judges the plurality of difference image when this processing unit is during higher than preset value, control this counting unit counting, in this processing unit difference image that this counting unit is counted, the complete white quantity of picture and the resolution of the plurality of detection image are divided by, in the hope of GTG value in the plurality of detection image, higher than the ratio of this preset value, then will produce this side-play amount according to this ratio.
18. pick-up units as claimed in claim 16, is characterized in that, this is captured by this image unit with reference to image on this film to be measured, and are stored in this storage element, and this processing unit reads this with reference to image again from this storage element; Or this is stored in this storage element in advance with reference to image, this processing unit reads this with reference to image in this storage element.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109544472A (en) * | 2018-11-08 | 2019-03-29 | 苏州佳世达光电有限公司 | Object drive device and object driving method |
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