CN109739035B - Peeling detection system and peeling detection method of liquid crystal panel - Google Patents
Peeling detection system and peeling detection method of liquid crystal panel Download PDFInfo
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- CN109739035B CN109739035B CN201910214419.XA CN201910214419A CN109739035B CN 109739035 B CN109739035 B CN 109739035B CN 201910214419 A CN201910214419 A CN 201910214419A CN 109739035 B CN109739035 B CN 109739035B
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Abstract
The invention provides a peeling detection system and a peeling detection method of a liquid crystal panel. The stripping detection system comprises an image acquisition device and an alignment film removal device, wherein the alignment film removal device comprises a heating carrying platform and an alignment film remover dripping device. When the peeling detection of the liquid crystal panel is carried out, the second substrate of the liquid crystal panel is peeled off from the frame glue, the peeling area of the second substrate is shot by the image acquisition device, then the alignment film removing liquid is dripped to the peeling area of the second substrate by the alignment film removing liquid dripping device, the second substrate is heated by the heating carrier, then the peeling area of the second substrate is shot for the second time by the image acquisition device, the two shot images are compared, if the two shot images are consistent, the alignment film is judged to be peeled from the second substrate, otherwise, the alignment film is judged to be peeled from the frame glue, and the peeling position of the liquid crystal panel can be accurately and effectively judged.
Description
Technical Field
The invention relates to the technical field of display, in particular to a peeling detection system and a peeling detection method of a liquid crystal panel.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Display (LCD) devices have been widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, and the like, and become the mainstream of Display devices, because of their advantages such as high image quality, power saving, thin body, and wide application range.
Most of the existing liquid crystal display devices generally include: a liquid crystal panel and a backlight module (backlight module). The liquid crystal panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, a plurality of vertical and horizontal fine electric wires are arranged between the two glass substrates, the liquid crystal molecules are controlled to change directions by electrifying or not, and light rays of the backlight module are refracted out to generate pictures.
Generally, a Liquid Crystal panel includes a Color Filter (CF) substrate, a Thin Film Transistor (TFT) substrate, a Liquid Crystal (LC) sandwiched between the Color Filter substrate and the Thin Film Transistor substrate, and a sealant (seal), wherein the sealant mainly functions to fix the Color Filter substrate and the Thin Film Transistor substrate by combining their own viscosity, so as to protect the Liquid Crystal from being contacted by external moisture and impurities and prevent the Liquid Crystal from flowing out. Meanwhile, usually, alignment films made of Polyimide (PI) are respectively disposed on the sides of the color film substrate and the array substrate close to each other to align the liquid crystal, and in the liquid crystal panel with a narrow frame, the sealant and the alignment films are overlapped (overlapped). In the use process of a liquid crystal panel, if peeling (peeling) occurs between an array substrate and a color film substrate, the quality of the liquid crystal panel is greatly affected, and peeling detection is usually performed in the prior art, specifically, peeling is performed between the array substrate and the color film substrate, and a peeling interface is detected, analyzed and judged at a position where the peeling interface is located, so as to provide a definite direction for improving the adhesion of a subsequent material interface. In a liquid crystal panel with a narrow frame, since the alignment film overlaps the sealant, peeling may occur between the alignment film and the sealant, or between the alignment film and the array substrate or the color film substrate, but since the alignment film is thin, the peeling position is not easily checked under an optical microscope, which affects accurate determination of the peeling position.
Disclosure of Invention
The invention aims to provide a peeling detection system which can accurately and effectively judge the peeling position of a liquid crystal panel.
Another object of the present invention is to provide a method for detecting peeling of a liquid crystal panel, which can accurately and effectively determine the peeling position of the liquid crystal panel.
In order to achieve the above object, the present invention provides a peeling detection system, including an image acquisition device and an alignment film removal device;
the alignment film removing device comprises a heating carrying platform and an alignment film removing liquid dripping device positioned above the heating carrying platform; the image acquisition device is positioned above the heating carrying platform; the alignment film removing and liquid drop dropping device is used for dropping an alignment film removing liquid.
The peeling detection system further comprises a driving device; the driving device is connected with the image acquisition device and the alignment film remover dripping device and is used for driving the image acquisition device and the alignment film remover dripping device to move.
The driving device is a movable gantry.
The image acquisition device is an optical microscope;
the heating stage is a quartz heating stage.
The alignment film removing device also comprises an alignment film removing liquid providing device connected with the alignment film removing liquid drop device; the alignment film remover supply device is used for supplying the alignment film remover to the alignment film remover dripping device;
the alignment film removing liquid is a liquid containing hypochlorous acid groups.
The invention also provides a peeling detection method of the liquid crystal panel, which comprises the following steps:
step S1, providing a peeling detection system and a liquid crystal panel;
the peeling detection system comprises an image acquisition device and an alignment film removal device; the alignment film removing device comprises a heating carrying platform and an alignment film removing liquid dripping device positioned above the heating carrying platform; the image acquisition device is positioned above the heating carrying platform;
the liquid crystal panel comprises a first substrate and a second substrate which are arranged oppositely, frame glue arranged between the first substrate and the second substrate, and an alignment film arranged between the frame glue and the second substrate;
step S2, peeling the sealant from the second substrate, wherein a peeling region is formed at a position of the second substrate corresponding to the sealant;
step S3, placing the second substrate on the heating stage, so that the side of the second substrate close to the sealant faces upward before the second substrate is peeled off from the sealant;
step S4, carrying out first image acquisition on the stripping area of the second substrate by using an image acquisition device;
step S5, dropping the alignment film remover to the stripping area of the second substrate by using the alignment film remover dropping device, and heating the second substrate by using the heating carrier after a preset time interval;
step S6, carrying out secondary image acquisition on the stripping area of the second substrate by using the image acquisition device;
step S7, comparing the image acquired by the first image acquisition with the image acquired by the second image acquisition, if the image acquired by the first image acquisition is consistent with the image acquired by the second image acquisition, determining that the alignment film is peeled from the second substrate, otherwise determining that the alignment film is peeled from the sealant.
One of the first substrate and the second substrate is a color film substrate, and the other substrate is a thin film transistor substrate.
The peeling detection system further comprises a driving device; the driving device is connected with the image acquisition device and the alignment film remover dripping device;
before the step S4, the method further includes the step of driving the image acquisition device and the alignment film remover dripping device to move to a position above the peeling region of the second substrate by using a driving device;
the driving device is a movable gantry.
The image acquisition device is an optical microscope;
the heating stage is a quartz heating stage.
The alignment film removing device also comprises an alignment film removing liquid providing device connected with the alignment film removing liquid drop device;
in step S5, the alignment film remover supplying device supplies an alignment film remover to the alignment film remover dripping device;
the alignment film is made of polyimide; the alignment film removing liquid is a liquid containing hypochlorous acid groups;
the preset time period in the step S5 is 2-3 minutes.
The invention has the beneficial effects that: the stripping detection system comprises an image acquisition device and an alignment film removal device, wherein the alignment film removal device comprises a heating carrying platform and an alignment film remover dripping device. When the peeling detection of the liquid crystal panel is carried out, the second substrate of the liquid crystal panel is peeled off from the frame glue, the peeling area of the second substrate is shot by the image acquisition device, then the alignment film removing liquid is dripped to the peeling area of the second substrate by the alignment film removing liquid dripping device, the second substrate is heated by the heating carrier, then the peeling area of the second substrate is shot for the second time by the image acquisition device, the two shot images are compared, if the two shot images are consistent, the alignment film is judged to be peeled from the second substrate, otherwise, the alignment film is judged to be peeled from the frame glue, and the peeling position of the liquid crystal panel can be accurately and effectively judged. The peeling detection method of the liquid crystal panel can accurately and effectively judge the peeling position of the liquid crystal panel.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a schematic diagram of a peel detection system according to the present invention;
FIG. 2 is a flowchart illustrating a method for detecting peeling of a liquid crystal panel according to the present invention;
fig. 3 is a schematic structural diagram of the liquid crystal panel provided in step S1 of the method for detecting peeling of a liquid crystal panel according to the present invention;
FIG. 4 is a diagram illustrating the step S2 of the peeling detection method of the liquid crystal panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of steps S3 and S4 of the method for detecting peeling of a liquid crystal panel according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a step S5 of the peeling detection method of the liquid crystal panel according to an embodiment of the present invention;
fig. 7 is a schematic diagram of step S6 of the method for detecting peeling of the liquid crystal panel according to an embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1, the present invention provides a peeling detection system, which includes an image capturing device 10 and an alignment layer removing device 20.
The alignment film removing device 20 includes a heating stage 21, and an alignment film removing liquid dropping device 22 located above the heating stage 21. The image capturing device 10 is located above the heating stage 21. The alignment film remover dripping device 22 is used for dripping the alignment film remover.
Specifically, referring to fig. 1, the peeling detection system further includes a driving device 30. The driving device 30 is connected with the image acquisition device 10 and the alignment film remover dripping device 22, and is used for driving the image acquisition device 10 and the alignment film remover dripping device 22 to move.
Specifically, the driving device 30 is a moving gantry.
In particular, the image acquisition device 10 is an optical microscope.
Specifically, the heating stage 21 is a quartz heating stage.
Specifically, referring to fig. 1, the alignment film removing device 20 further includes an alignment film remover supplying device 23 connected to the alignment film remover dripping device 22. The alignment film remover supplying device 23 is used for supplying the alignment film remover to the alignment film remover dripping device 22.
Preferably, the alignment film removing liquid is a liquid containing a hypochlorous acid group.
The peeling detection system of the present invention is used for peeling detection of the liquid crystal panel 90. Referring to fig. 3, the liquid crystal panel 90 includes a first substrate 91 and a second substrate 92 disposed opposite to each other, a sealant 93 disposed between the first substrate 91 and the second substrate 92, and an alignment film 94 made of a polyimide material disposed between the sealant 93 and the second substrate 92. Taking the embodiments shown in fig. 3 to 7 as examples, one of the first substrate 91 and the second substrate 92 is a color film substrate, and the other is a thin film transistor substrate, the specific process of performing the peeling detection on the liquid crystal panel 90 by using the peeling detection system of the present invention is as follows:
first, referring to fig. 4, the sealant 93 is peeled off from the second substrate 92, and a peeling region 921 is formed at a position of the second substrate 92 corresponding to the sealant 93. In the embodiment shown in fig. 4, when the sealant 93 and the second substrate 92 are peeled off, an actual peeling interface is located between the sealant 93 and the alignment film 94, that is, the sealant 93 and the alignment film 94 are peeled off, and the alignment film 94 is left on the surface of the second substrate 92. In other embodiments of the present invention, when the sealant 93 and the second substrate 92 are peeled off, there is a situation that the actual peeling interface is located between the second substrate 92 and the alignment film 94, that is, the alignment film 94 is left on the surface of the sealant 93.
Next, referring to fig. 5, the second substrate 92 is placed on the heating stage 21, such that the side of the second substrate 92 close to the sealant 93 faces upward before the second substrate is peeled from the sealant 93, and then the driving device 30 drives the image capturing device 10 and the alignment film remover dripping device 22 to move to above the peeling region 921 of the second substrate 92, so as to perform the first image capturing on the peeling region 921 of the second substrate 92 by using the image capturing device 10. In the embodiment shown in fig. 5, since the alignment film 94 remains on the surface of the second substrate 92 during the peeling process, the alignment film 94 exists in the image captured by the first image capturing of the peeling region 921 of the second substrate 92. In other embodiments of the present invention, if the alignment film 94 is left on the surface of the sealant 93 after the sealant 93 and the second substrate 92 are peeled off, the alignment film 94 does not exist in the image collected by the first image collection.
Referring to fig. 6, the alignment film remover is dropped onto the peeling region 921 of the second substrate 92 by the alignment film remover dropping device 22, in the embodiment shown in fig. 6, since the alignment film 94 remains on the surface of the second substrate 92 during the peeling process, after the alignment film remover is dropped onto the peeling region 921 of the second substrate 92, the portion of the alignment film 94 corresponding to the peeling region 921 reacts with the alignment film remover, and after a predetermined time interval (e.g., 2-3 minutes), the second substrate 92 is heated by the heating stage 21, so that the liquid remaining after the reaction between the alignment film 94 and the alignment film remover is volatilized, and the alignment film 94 is no longer present on the peeling region 921 of the second substrate 92. In other embodiments of the present invention, if the alignment film 94 is left on the surface of the sealant 93 after the sealant 93 is peeled from the second substrate 92, the alignment film 94 is naturally not present on the peeling region 921 of the second substrate 92 after the step is finished.
Then, referring to fig. 7, the image capturing device 10 is used to perform a second image capturing on the peeling region 921 of the second substrate 92, compare the image obtained by the first image capturing with the image obtained by the second image capturing, determine that the alignment film 94 is peeled from the second substrate 92 if the image obtained by the first image capturing is consistent with the image obtained by the second image capturing, otherwise determine that the alignment film 94 is peeled from the sealant 93. In the embodiment shown in fig. 7, since the alignment film 94 is not present on the peeling region 921 of the second substrate 92, the alignment film 94 is not present in the image acquired by the first image acquisition of the peeling region 921 of the second substrate 92, so that the image acquired by the first image acquisition is inconsistent with the image acquired by the second image acquisition, and accordingly it is determined that the sealant 93 is peeled from the alignment film 94, that is, the actual peeling interface is located between the sealant 93 and the alignment film 94, while in other embodiments of the present invention, if the alignment film 94 is left on the surface of the sealant 93 after the sealant 93 is peeled from the second substrate 92, the alignment film 94 is not present in the image acquired by the first image acquisition and the image acquired by the second image acquisition, and the images are consistent, and accordingly it is determined that the alignment film 94 is peeled from the second substrate 92, that the actual peeling interface is located between the alignment film 94 and the second substrate 92, therefore, when the liquid crystal panel with the narrow frame is subjected to peeling detection, even if the frame glue is overlapped with the alignment film, the peeling position of the liquid crystal panel can be effectively and accurately judged, so that a clear direction is provided for improving the subsequent material interface bonding force.
In addition, the peeling detection system of the present invention may further determine whether or not there is a peeling between the black matrix on the color filter substrate side and the substrate of the color filter substrate, specifically, the color filter substrate peeled from the thin film transistor substrate is placed on the heating stage 21, the image acquisition device 10, specifically, an optical microscope, is used to photograph the black matrix region on the color filter substrate, and if there is a light-transmitting region in the black matrix region, this indicates that the black matrix and the substrate are peeled.
Based on the same inventive concept, please refer to fig. 2, the invention further provides a peeling detection method of a liquid crystal panel, comprising the following steps:
in step S1, please refer to fig. 1 and fig. 3, a peeling detection system and a liquid crystal panel 90 are provided.
The peeling detection system comprises an image acquisition device 10 and an alignment film removing device 20. The alignment film removing device 20 includes a heating stage 21, and an alignment film removing liquid dropping device 22 located above the heating stage 21. The image capturing device 10 is located above the heating stage 21.
The liquid crystal panel 90 includes a first substrate 91 and a second substrate 92 disposed opposite to each other, a sealant 93 disposed between the first substrate 91 and the second substrate 92, and an alignment film 94 disposed between the sealant 93 and the second substrate 92.
Specifically, referring to fig. 1, the peeling detection system further includes a driving device 30. The driving device 30 is connected with the image acquisition device 10 and the alignment film remover dripping device 22, and is used for driving the image acquisition device 10 and the alignment film remover dripping device 22 to move.
Specifically, the driving device 30 is a moving gantry.
In particular, the image acquisition device 10 is an optical microscope.
Specifically, the heating stage 21 is a quartz heating stage.
Specifically, referring to fig. 1, the alignment film removing device 20 further includes an alignment film remover supplying device 23 connected to the alignment film remover dripping device 22.
Specifically, one of the first substrate 91 and the second substrate 92 is a color filter substrate, and the other is a thin film transistor substrate.
Specifically, the material of the alignment film 94 is polyimide.
In step S2, please refer to fig. 4, the sealant 93 is peeled off from the second substrate 92, and a peeling region 921 is formed at a position of the second substrate 92 corresponding to the sealant 93.
Specifically, in the embodiment shown in fig. 4, when the sealant 93 is peeled off from the second substrate 92, the actual peeling interface is located between the sealant 93 and the alignment film 94, that is, the sealant 93 is peeled off from the alignment film 94, and the alignment film 94 is left on the surface of the second substrate 92. In other embodiments of the present invention, when the sealant 93 and the second substrate 92 are peeled off, there is a situation that the actual peeling interface is located between the second substrate 92 and the alignment film 94, that is, the alignment film 94 is left on the surface of the sealant 93.
Step S3, please refer to fig. 5, in which the second substrate 92 is placed on the heating stage 21, such that the side of the second substrate 92 close to the sealant 93 faces upward before the second substrate 92 is peeled off from the sealant 93.
In step S4, referring to fig. 5, the image capturing device 10 is used to capture a first image of the peeling area 921 of the second substrate 92.
Specifically, the step S4 is preceded by a step of driving the image capturing device 10 and the alignment film remover dripping device 22 to move above the peeling region 921 of the second substrate 92 by using the driving device 30.
Specifically, in the embodiment shown in fig. 5, since the alignment film 94 remains on the surface of the second substrate 92 during the peeling process, the alignment film 94 exists in the image captured by the first image capturing of the peeling region 921 of the second substrate 92. In other embodiments of the present invention, if the alignment film 94 is left on the surface of the sealant 93 after the sealant 93 and the second substrate 92 are peeled off, the alignment film 94 does not exist in the image collected by the first image collection.
In step S5, referring to fig. 6, the alignment film remover is dropped onto the peeling region 921 of the second substrate 92 by the alignment film remover dropping device 22, and after a preset time interval, the second substrate 92 is heated by the heating stage 21.
Specifically, in step S5, the alignment film remover supplying device 23 is used to supply the alignment film remover to the alignment film remover dripping device 22. The alignment film removing liquid is a liquid containing hypochlorous acid groups. The preset time period in the step S5 is 2-3 minutes.
Specifically, in the embodiment shown in fig. 6, since the alignment film 94 remains on the surface of the second substrate 92 during the peeling process, after the alignment film removing solution is dropped onto the peeling region 921 of the second substrate 92, the portion of the alignment film 94 corresponding to the peeling region 921 reacts with the alignment film removing solution, and after a predetermined time interval, the second substrate 92 is heated by the heating stage 21, so that the liquid remaining after the reaction between the alignment film 94 and the alignment film removing solution is volatilized, and thus the alignment film 94 no longer exists on the peeling region 921 of the second substrate 92. In other embodiments of the present invention, if the alignment film 94 is left on the surface of the sealant 93 after the sealant 93 is peeled from the second substrate 92, the alignment film 94 is naturally not present on the peeling region 921 of the second substrate 92 after the step is finished.
In step S6, referring to fig. 7, the image capturing device 10 is used to capture a second image of the peeling area 921 of the second substrate 92.
Step S7, comparing the image acquired by the first image acquisition with the image acquired by the second image acquisition, if the image acquired by the first image acquisition is consistent with the image acquired by the second image acquisition, determining that the alignment film 94 is peeled from the second substrate 92, otherwise determining that the alignment film 94 is peeled from the sealant 93.
Specifically, in the embodiment shown in fig. 7, since the alignment film 94 is not present on the peeling region 921 of the second substrate 92, the alignment film 94 is not present in the image acquired by the first image acquisition of the peeling region 921 of the second substrate 92, so that the image acquired by the first image acquisition is inconsistent with the image acquired by the second image acquisition, and thus it is determined that the sealant 93 is peeled from the alignment film 94, that is, the actual peeling interface is located between the sealant 93 and the alignment film 94, while in other embodiments of the present invention, if the alignment film 94 is left on the surface of the sealant 93 after the sealant 93 is peeled from the second substrate 92, the alignment film 94 is not present in the image acquired by the first image acquisition and the image acquired by the second image acquisition, and the images are consistent, and thus it is determined that the alignment film 94 is peeled from the second substrate 92, that the actual peeling interface is located between the alignment film 94 and the second substrate 92, therefore, when the liquid crystal panel with the narrow frame is subjected to peeling detection, even if the frame glue is overlapped with the alignment film, the peeling position of the liquid crystal panel can be effectively and accurately judged, so that a clear direction is provided for improving the subsequent material interface bonding force.
In summary, the peeling detection system of the present invention includes an image capturing device and an alignment film removing device, wherein the alignment film removing device includes a heating stage and an alignment film remover dripping device. When the peeling detection of the liquid crystal panel is carried out, the second substrate of the liquid crystal panel is peeled off from the frame glue, the peeling area of the second substrate is shot by the image acquisition device, then the alignment film removing liquid is dripped to the peeling area of the second substrate by the alignment film removing liquid dripping device, the second substrate is heated by the heating carrier, then the peeling area of the second substrate is shot for the second time by the image acquisition device, the two shot images are compared, if the two shot images are consistent, the alignment film is judged to be peeled from the second substrate, otherwise, the alignment film is judged to be peeled from the frame glue, and the peeling position of the liquid crystal panel can be accurately and effectively judged. The peeling detection method of the liquid crystal panel can accurately and effectively judge the peeling position of the liquid crystal panel.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (5)
1. A peeling detection method of a liquid crystal panel is characterized by comprising the following steps:
step S1, providing a peeling detection system and a liquid crystal panel (90);
the peeling detection system comprises an image acquisition device (10) and an alignment film removing device (20); the alignment film removing device (20) comprises a heating carrying platform (21) and an alignment film removing liquid dropping device (22) positioned above the heating carrying platform (21); the image acquisition device (10) is positioned above the heating carrying platform (21);
the liquid crystal panel (90) comprises a first substrate (91) and a second substrate (92) which are arranged oppositely, frame glue (93) arranged between the first substrate (91) and the second substrate (92), and an alignment film (94) arranged between the frame glue (93) and the second substrate (92);
step S2, peeling the sealant (93) from the second substrate (92), wherein a peeling region (921) is formed on the second substrate (92) at a position corresponding to the sealant (93);
step S3, placing the second substrate (92) on the heating stage (21) so that the side of the second substrate (92) close to the frame glue (93) faces upwards before being peeled off from the frame glue (93);
step S4, carrying out first image acquisition on the peeling area (921) of the second substrate (92) by using the image acquisition device (10);
step S5, dripping the alignment film removing liquid to the stripping area (921) of the second substrate (92) by using the alignment film removing liquid dripping device (22), and heating the second substrate (92) by using the heating carrying platform (21) after a preset time interval;
step S6, carrying out secondary image acquisition on the peeling area (921) of the second substrate (92) by using the image acquisition device (10);
and step S7, comparing the image acquired by the first image acquisition with the image acquired by the second image acquisition, judging that the alignment film (94) is peeled from the second substrate (92) if the image acquired by the first image acquisition is consistent with the image acquired by the second image acquisition, and otherwise judging that the alignment film (94) is peeled from the frame glue (93).
2. The method for detecting peeling of a liquid crystal panel according to claim 1, wherein one of the first substrate (91) and the second substrate (92) is a color filter substrate, and the other is a thin film transistor substrate.
3. The peeling detection method of a liquid crystal panel according to claim 1, wherein the peeling detection system further comprises a driving device (30); the driving device (30) is connected with the image acquisition device (10) and the alignment film remover dripping device (22);
the step S4 is preceded by a step of driving the image acquisition device (10) and the alignment film remover dripping device (22) to move to the upper part of the stripping area (921) of the second substrate (92) by the driving device (30);
the driving device (30) is a movable gantry.
4. The method for detecting peeling of a liquid crystal panel according to claim 1, wherein the image pickup device (10) is an optical microscope;
the heating stage (21) is a quartz heating stage.
5. The method for detecting peeling of a liquid crystal panel according to claim 1, wherein the alignment film removing device (20) further comprises an alignment film removing liquid supplying device (23) connected to the alignment film removing liquid dropping device (22);
in the step S5, the alignment film remover supplying device (23) is used to supply the alignment film remover to the alignment film remover dripping device (22);
the material of the alignment film (94) is polyimide; the alignment film removing liquid is a liquid containing hypochlorous acid groups;
the preset time period in the step S5 is 2-3 minutes.
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| CN201910214419.XA CN109739035B (en) | 2019-03-20 | 2019-03-20 | Peeling detection system and peeling detection method of liquid crystal panel |
| PCT/CN2019/081343 WO2020186559A1 (en) | 2019-03-20 | 2019-04-03 | Peeling detection system, and peeling detection method for liquid crystal panel |
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| CN201910214419.XA CN109739035B (en) | 2019-03-20 | 2019-03-20 | Peeling detection system and peeling detection method of liquid crystal panel |
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| CN109739035B true CN109739035B (en) | 2020-12-25 |
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