CN106200042B - Polaroid attaching method and polaroid attaching machine - Google Patents
Polaroid attaching method and polaroid attaching machine Download PDFInfo
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- CN106200042B CN106200042B CN201610588599.4A CN201610588599A CN106200042B CN 106200042 B CN106200042 B CN 106200042B CN 201610588599 A CN201610588599 A CN 201610588599A CN 106200042 B CN106200042 B CN 106200042B
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- G—PHYSICS
- G02—OPTICS
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- G—PHYSICS
- G02—OPTICS
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses an attaching method of a polarizer, which comprises the following steps: placing the substrate into a polarizer attaching machine; judging whether the substrate is qualified or not through the polaroid attaching machine; putting the polaroid into the polaroid attaching machine; judging whether the polaroid is qualified or not through the polaroid attaching machine; and if the substrate is qualified and the polaroid is qualified, attaching the polaroid to the substrate. The attaching method of the polaroid has high attaching precision. The invention also discloses a polaroid attaching machine.
Description
Technical Field
The invention relates to the technical field of polarizer attachment, in particular to a polarizer attachment method and a polarizer attachment machine.
Background
The polarizer is an optical film which is formed by compounding multiple layers of high molecular materials and has the function of generating polarized light, converts natural light without polarization into polarized light, and enables light which is vertical to an electric field to pass through, so that the liquid crystal display panel can normally display images and is an essential part for imaging of the liquid crystal display. In the latter stage of the liquid crystal display, a polarizer needs to be attached to a glass substrate to which a flexible circuit board has been attached.
In the conventional automatic polarizer attaching machine, a glass substrate and a polarizer to be attached are generally aligned, and then the polarizer is moved and attached to the glass substrate through conversion. The glass substrate is aligned by grabbing two cross MARKs (MARKs) in the peripheral area of the glass substrate, and the polarizer is aligned by grabbing three sides of the polarizer. However, since the automatic polarizer attaching machine cannot detect a Cutting (CUT) error of the glass substrate and the polarizer, the glass substrate and the polarizer (the glass substrate or/and the polarizer having a cutting error) which originally have a cutting error are easily and erroneously attached together, resulting in low attaching precision of the polarizer and high product defect rate.
Disclosure of Invention
The invention aims to provide a method for attaching a polarizer with high attachment precision.
In addition, still provide a polaroid and attach machine.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in one aspect, a method for attaching a polarizer is provided, including:
placing the substrate into a polarizer attaching machine;
judging whether the substrate is qualified or not through the polaroid attaching machine;
putting the polaroid into the polaroid attaching machine;
judging whether the polaroid is qualified or not through the polaroid attaching machine;
and if the substrate is qualified and the polaroid is qualified, attaching the polaroid to the substrate.
Wherein, the step of judging whether the substrate is qualified through the polaroid attaching machine comprises the following steps:
acquiring coordinate positions of four corners of the substrate;
calculating the lengths of the four sides of the substrate;
judging whether the lengths of the four edges of the substrate are within a first preset range, if so, determining that the substrate is qualified; if not, the substrate is unqualified.
The attaching method of the polarizer further comprises the following steps:
and if the substrate is unqualified, placing a new substrate into the polarizer attaching machine, and judging whether the new substrate is qualified or not again.
Wherein, the step of judging whether the polaroid is qualified through the polaroid attaching machine comprises the following steps:
acquiring coordinate positions of four corners of the polarizer;
calculating the lengths of the four sides of the polaroid;
judging whether the lengths of the four sides of the polaroid are within a second preset range or not, if so, determining that the polaroid is qualified; if not, the polaroid is unqualified.
The attaching method of the polarizer further comprises the following steps:
and if the polaroid is unqualified, putting a new polaroid into the polaroid attaching machine, and judging whether the new polaroid is qualified or not again.
Wherein the acquiring the coordinate positions of the four corners of the substrate includes:
aligning four corners of the substrate respectively through four image sensors to obtain coordinate positions of the four corners of the substrate;
the step of obtaining the coordinate positions of the four corners of the polarizer comprises the following steps:
and aligning the four corners of the polaroid through four image sensors respectively to obtain the coordinate positions of the four corners of the polaroid.
Wherein attaching the polarizer to the substrate comprises:
converting the relative position of the polaroid and the substrate according to the position coordinates of the four corners of the substrate and the position coordinates of the four corners of the polaroid;
moving the polarizer according to the relative position to align the region to be attached of the substrate; and
and attaching the polarizer to the to-be-attached area of the substrate.
Wherein the difference between the maximum value and the minimum value of the first predetermined range is a first value, the difference between the maximum value and the minimum value of the second predetermined range is a second value, and the first value is smaller than the second value.
In another aspect, there is provided a polarizer attaching machine including:
the detection module is used for detecting the position coordinates of the four corners of the substrate and the polaroid;
the judging module is used for judging whether the substrate and the polaroid are qualified or not according to the position coordinates; and
and the attaching module attaches the qualified polaroid to the qualified substrate.
Wherein the detection module comprises at least eight image sensors;
the four image sensors are used for respectively aligning the four corners of the substrate so as to obtain the coordinate positions of the four corners of the substrate;
and the other four image sensors are used for aligning the four corners of the polaroid respectively so as to obtain the coordinate positions of the four corners of the polaroid.
Compared with the prior art, the invention has the following beneficial effects:
the polaroid attaching method comprises the steps of firstly judging whether the base plate and the polaroid are qualified or not, and attaching the polaroid to the base plate when the base plate is qualified and the polaroid is qualified, so that the unqualified base plate and the polaroid can be timely eliminated by the polaroid attaching method, and the attaching precision of the polaroid is effectively controlled. Therefore, the polaroid attached by the attaching method of the polaroid has high attaching precision and high yield.
Meanwhile, the judging action of whether the base plate is qualified or not and the judging action of whether the polaroid is qualified or not are separately carried out, so that whether the polaroid is unqualified or the base plate can be accurately and quickly judged, and the unqualified polaroid or the base plate can be quickly eliminated, so that the smooth implementation of an attaching process is facilitated, and the attaching precision of the polaroid can be effectively controlled.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a polarizer attached to a substrate according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart illustrating an attaching method of a polarizer according to an embodiment of the present invention.
FIG. 3 is a schematic diagram illustrating Step21 of a method for attaching a polarizer according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of Step41 of an attaching method of a polarizer according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of a polarizer attaching machine according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, an embodiment of the invention provides a method for attaching a polarizer, which is applied to a liquid crystal display manufacturing process. The attaching method of the polarizer comprises the following steps:
step 1: placing the substrate 1 into a polaroid attaching machine;
step 2: judging whether the substrate 1 is qualified or not through the polaroid attaching machine;
step 3: putting the polarizer 2 into the polarizer attaching machine;
step 4: judging whether the polaroid 2 is qualified or not through the polaroid attaching machine;
step 5: and if the substrate 1 is qualified and the polaroid 2 is qualified, attaching the polaroid 2 to the substrate 1.
In this embodiment, since the polarizer attaching machine firstly determines whether the substrate 1 and the polarizer 2 are qualified, and attaches the polarizer 2 to the substrate 1 when the substrate 1 is qualified and the polarizer 2 is qualified, the attaching method of the polarizer 2 can timely remove the unqualified substrate 1 and the polarizer 2, thereby effectively controlling the attaching precision of the polarizer 2. Therefore, the polaroid attached by the attaching method of the polaroid has high attaching precision and high yield.
Meanwhile, the judging action of whether the substrate 1 is qualified or not and the judging action of whether the polaroid 2 is qualified or not are separately carried out, so that whether the polaroid or the substrate is unqualified or not can be accurately and quickly judged, and the unqualified polaroid or the substrate is quickly removed, so that the smooth implementation of an attaching process is facilitated, and the attaching precision of the polaroid 2 can be effectively controlled.
It should be understood that, in the present embodiment, Step1 and Step2 are used to provide an acceptable substrate 1, and Step3 and Step4 are used to provide an acceptable polarizer 2, so that Step1 and Step2 can be performed simultaneously with Step3 and Step4, or before Step3 and Step4, or after Step3 and Step 4.
The substrate 1 is typically a glass substrate.
Further, referring to fig. 1 to fig. 3 together, as an alternative embodiment, Step2 includes:
step 21: acquiring coordinate positions of four corners of the substrate 1;
step 22: calculating the lengths of the four sides of the substrate 1;
step 23: judging whether the lengths of the four sides of the substrate 1 are within a first preset range; if yes, the substrate 1 is qualified; if not, the substrate 1 is unqualified.
In this embodiment, the polarizer attaching machine obtains the coordinate positions of the four corners of the substrate 1, so that the lengths of the four sides of the substrate 1 can be calculated according to the coordinate positions of the four corners of the substrate 1, and whether the substrate 1 is qualified or not is judged, and the substrate 1 with unqualified size caused by cutting errors and other reasons is prevented from being continuously used, so that the attaching precision of the polarizer 2 is effectively controlled.
It is understood that the "first predetermined range" is a size range allowed by the qualified substrate 1.
Further, referring to fig. 1 and fig. 2 together, as an alternative embodiment, the method for attaching a polarizer further includes:
step 24: and if the substrate is unqualified, placing a new substrate into the polarizer attaching machine, and judging whether the new substrate is qualified or not again.
In other words, if the polarizer attaching machine detects that the current substrate is qualified, the current substrate enters a subsequent attaching process; and if the polaroid attaching machine detects that the current substrate is unqualified, replacing the current substrate with a new substrate, and detecting again until the qualified substrate is detected, wherein the qualified substrate is not subjected to the subsequent attaching process.
Further, referring to fig. 1, fig. 2 and fig. 4 together, as an alternative embodiment, Step4 includes:
step 41: acquiring coordinate positions of four corners of the polarizer 2;
step 42: calculating the lengths of the four sides of the polarizer 2;
step 43: judging whether the lengths of the four sides of the polaroid 2 are within a second preset range, if so, determining that the polaroid 2 is qualified; if not, the polaroid 2 is unqualified.
In this embodiment, the polarizer attaching machine acquires the coordinate positions of four corners of the polarizer 2, so that the lengths of four sides of the polarizer 2 can be calculated according to the coordinate positions of four corners of the polarizer 2, and whether the polarizer 2 is qualified or not is judged, the polarizer 2 with unqualified size caused by cutting errors and other reasons is prevented from being continuously used, and the attaching precision of the polarizer 2 is effectively controlled.
It is understood that the "second predetermined range" is a size range allowed by the qualified polarizer 2.
Further, referring to fig. 1 and fig. 2 together, as an alternative embodiment, the method for attaching the polarizer 2 further includes:
step 44: and if the polaroid is unqualified, putting a new polaroid into the polaroid attaching machine, and judging whether the new polaroid is qualified or not again.
In other words, if the polarizer attaching machine detects that the current polarizer is qualified, the current polarizer enters a subsequent attaching process; and if the polarizer attaching machine detects that the current polarizer is unqualified, replacing the current polarizer with a new polarizer, and detecting again until the qualified polarizer is detected, wherein the qualified polarizer enters a subsequent attaching process.
Further, referring to fig. 1 to 4 together, as an alternative embodiment, Step21 includes:
four image Sensors (CCDs) 3 are respectively aligned to four corners of the substrate 1 to obtain coordinate positions of the four corners of the substrate 1.
Step41 includes:
four corners of the polarizer 2 are respectively aligned by four image sensors (CCD) 3 to obtain coordinate positions of the four corners of the polarizer 2.
In this embodiment, counterpoint through different image sensor 3 respectively base plate 1 with polaroid 2, consequently base plate 1 with the counterpoint action of polaroid 2 is mutually independent, base plate 1 with whether qualified judgement action of polaroid 2 also separately goes on, consequently can accurately, judge unqualified polaroid 2 or base plate 1 fast to get rid of fast, be favorable to going on smoothly of attaching process, and can effectively manage and control the attached precision of polaroid 2.
Further, referring to fig. 1 to 4 together, as an alternative embodiment, Step5 includes:
step 51: converting the relative position of the polarizer 2 and the substrate 1 according to the position coordinates of the four corners of the substrate 1 and the position coordinates of the four corners of the polarizer 2;
step 52: moving the polarizer 2 according to the relative position to align the region to be attached of the substrate 1; and
step 53: and attaching the polarizer 2 to the to-be-attached area of the substrate 1.
In this embodiment, the position coordinates of the four corners of the substrate 1 and the position coordinates of the four corners of the polarizer 2 may be used to detect whether the substrate 1 and the polarizer 2 are qualified, and simultaneously, the relative positions of the substrate 1 and the polarizer 2 may be accurately calculated, so as to further improve the attachment precision of the polarizer 2. Of course, both the substrate 1 and the polarizer 2 entering Step5 are acceptable.
Further, as an optional embodiment, a difference between a maximum value and a minimum value of the first predetermined range is a first value, a difference between a maximum value and a minimum value of the second predetermined range is a second value, and the first value is smaller than the second value. In other words, the tolerance range of the substrate 1 is smaller than that of the polarizer 2.
Preferably, the second value is 100 μm or less.
Referring to fig. 1 to 5, an embodiment of the invention further provides a polarizer attaching machine 100, including: a detection module 10, a determination module 20 and an attaching module 30. The detection module 10 is configured to detect position coordinates of four corners of the substrate 1 and the polarizer 2, respectively. The judging module 20 judges whether the substrate 1 and the polarizer 2 are qualified according to the position coordinates. The attaching module 30 is used for attaching the qualified polarizer 2 to the qualified substrate 1.
In this embodiment, since the polarizer attaching machine 100 can first determine whether the substrate 1 and the polarizer 2 are qualified, and then attach the qualified polarizer 2 to the qualified substrate 1, the polarizer attaching machine 100 has high attachment accuracy and high yield. Meanwhile, the polarizer attaching machine 100 separately performs the qualified judgment action of the substrate 1 and the qualified judgment action of the polarizer 2, so that the unqualified polarizer 2 or substrate 1 can be accurately and quickly judged, and the unqualified polarizer 2 or substrate 1 can be quickly removed, thereby being beneficial to the smooth proceeding of the attaching process and effectively managing and controlling the attaching precision of the polarizer 2.
Preferably, when the determining module 20 determines that the substrate and/or the polarizer are not qualified, a new substrate and/or a new polarizer are replaced, the detecting module 10 detects the new substrate and/or the new polarizer again, and the determining module 20 determines whether the substrate and/or the polarizer is qualified according to the detection. If the judgment result is qualified, the attaching stage is entered (Step 5), otherwise, the substrate and/or the polarizer are replaced again.
It is understood that the attaching method of the polarizer according to any of the above embodiments can be implemented on the polarizer attaching machine 100.
Further, referring to fig. 2 to 5, as an alternative embodiment, the detecting module 10 includes at least eight image sensors 3. The four image sensors 3 are used for aligning four corners of the substrate 1 respectively to obtain coordinate positions of the four corners of the substrate 1. The other four image sensors 3 are used for aligning the four corners of the polarizer 2 respectively to obtain the coordinate positions of the four corners of the polarizer 2.
In this embodiment, the polaroid attaching machine 100 is counterpointed through different image sensor 3 respectively base plate 1 with polaroid 2, consequently base plate 1 with the counterpoint action of polaroid 2 is mutually independent, base plate 1 with whether qualified judgement action of polaroid 2 also separately goes on, consequently can accurately, judge unqualified polaroid 2 or base plate 1 fast to get rid of fast, be favorable to going on smoothly of attached process, and can effectively manage and control the attached precision of polaroid 2.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A method for attaching a polarizer, comprising:
placing the substrate into a polarizer attaching machine;
judging whether the substrate is qualified or not through the polaroid attaching machine;
putting the polaroid into the polaroid attaching machine;
judging whether the polaroid is qualified or not through the polaroid attaching machine;
if the substrate is qualified and the polaroid is qualified, attaching the polaroid to the substrate;
wherein, the step of judging whether the substrate is qualified through the polaroid attaching machine comprises the following steps:
acquiring coordinate positions of four corners of the substrate;
calculating the lengths of the four sides of the substrate;
judging whether the lengths of the four edges of the substrate are within a first preset range, if so, determining that the substrate is qualified; if not, the substrate is unqualified;
the step of judging whether the polaroid is qualified or not through the polaroid attaching machine comprises the following steps:
acquiring coordinate positions of four corners of the polarizer;
calculating the lengths of the four sides of the polaroid;
judging whether the lengths of the four sides of the polaroid are within a second preset range or not, if so, determining that the polaroid is qualified; if not, the polaroid is unqualified.
2. The method of attaching a polarizer of claim 1, wherein the method further comprises:
and if the substrate is unqualified, placing a new substrate into the polarizer attaching machine, and judging whether the new substrate is qualified or not again.
3. The method of attaching a polarizer of claim 1, wherein the method further comprises:
and if the polaroid is unqualified, putting a new polaroid into the polaroid attaching machine, and judging whether the new polaroid is qualified or not again.
4. The method of claim 1, wherein the obtaining the coordinate positions of the four corners of the substrate comprises:
aligning four corners of the substrate respectively through four image sensors to obtain coordinate positions of the four corners of the substrate;
the step of obtaining the coordinate positions of the four corners of the polarizer comprises the following steps:
and aligning the four corners of the polaroid through four image sensors respectively to obtain the coordinate positions of the four corners of the polaroid.
5. The method of claim 1, wherein the attaching the polarizer to the substrate comprises:
converting the relative position of the polaroid and the substrate according to the position coordinates of the four corners of the substrate and the position coordinates of the four corners of the polaroid;
moving the polarizer according to the relative position to align the region to be attached of the substrate; and
and attaching the polarizer to the to-be-attached area of the substrate.
6. The method of attaching a polarizer of claim 1, wherein a difference between a maximum value and a minimum value of the first predetermined range is a first value, and a difference between a maximum value and a minimum value of the second predetermined range is a second value, wherein the first value is smaller than the second value.
7. A polarizer attaching machine, comprising:
the detection module is used for detecting the position coordinates of the four corners of the substrate and the polaroid;
the judging module is used for judging whether the substrate and the polaroid are qualified or not according to the position coordinates; and
the attaching module attaches the qualified polaroid to the qualified substrate;
the detection module comprises at least eight image sensors;
the four image sensors are used for respectively aligning the four corners of the substrate so as to obtain the coordinate positions of the four corners of the substrate;
and the other four image sensors are used for aligning the four corners of the polaroid respectively so as to obtain the coordinate positions of the four corners of the polaroid.
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| CN201610588599.4A CN106200042B (en) | 2016-07-22 | 2016-07-22 | Polaroid attaching method and polaroid attaching machine |
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| CN201610588599.4A CN106200042B (en) | 2016-07-22 | 2016-07-22 | Polaroid attaching method and polaroid attaching machine |
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| JP3948522B2 (en) * | 2003-01-30 | 2007-07-25 | 株式会社タカトリ | LCD panel polarizing plate adhesion accuracy inspection method |
| JP4774123B1 (en) * | 2010-03-18 | 2011-09-14 | 住友化学株式会社 | Method for inspecting bonding accuracy of polarizing plate and apparatus for inspecting bonding accuracy |
| CN104391390B (en) * | 2014-12-18 | 2017-05-10 | 合肥鑫晟光电科技有限公司 | Substrate checking device and method |
| CN104808363B (en) * | 2015-05-14 | 2018-03-27 | 苏州市邦成电子科技有限公司 | A kind of pinpoint polarized light sheet pasting device |
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