CN114764989A - Polaroid attaching device and method - Google Patents
Polaroid attaching device and method Download PDFInfo
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- CN114764989A CN114764989A CN202110035805.XA CN202110035805A CN114764989A CN 114764989 A CN114764989 A CN 114764989A CN 202110035805 A CN202110035805 A CN 202110035805A CN 114764989 A CN114764989 A CN 114764989A
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- roller
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- contact
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
Abstract
The invention discloses a polaroid attaching device and a method, wherein the device comprises: a first roller and a second roller; the first roller and the second roller are used for clamping and pressing the substrate; when the first roller and the second roller clamp the substrate to attach the polarizer, a second contact size of the second roller is larger than a first contact size of the first roller, wherein the first contact size is the length of a contact area of the first roller and the substrate along a preset moving direction of the substrate; the second contact size is the length of a contact area of the second roller and the substrate along the preset moving direction of the substrate. The device and the method for attaching the display panel with the polaroid misplaced are high in efficiency and quality.
Description
Technical Field
The invention relates to the technical field of display, in particular to a polarizer attaching device and method.
Background
Polarizer attachment devices commonly used by display panel manufacturers have two types, one-sided attachment (e.g., horizontal attachment) with one roller and two-sided attachment (e.g., vertical attachment) with two rollers.
For the products with frames, the polaroids on the two sides of the display panel are symmetrical, and the existing double-side attaching device can be adopted for attaching the polaroids. For the borderless product, the polaroids on the two sides of the display panel are often staggered, the roller on one side cannot be pressed from the initial end part of the polaroid under the condition of keeping the pressing balance on the two sides by adopting the double-side attaching device, so that various quality problems are caused, and the problem of low production efficiency is caused by adopting the single-side attaching device.
Therefore, an attaching device for attaching a display panel with a dislocated polarizer, which is efficient and has high quality, is lacking at present.
Disclosure of Invention
In view of the above problems, an apparatus and a method for attaching a polarizer are provided to improve the efficiency and quality of attaching a misaligned polarizer.
In a first aspect, a polarizer attaching apparatus is provided, including:
a first roller and a second roller; the first roller and the second roller are used for clamping the substrate and rolling and attaching the polaroid to two sides of the substrate;
when the first roller and the second roller clamp the substrate to attach the polarizer, a second contact size of the second roller is larger than a first contact size of the first roller, wherein the first contact size is the length of a contact area of the first roller and the substrate along a preset moving direction of the substrate; the second contact size is the length of a contact area of the second roller and the substrate along the preset moving direction of the substrate.
Optionally, the diameter of the second roller is larger than that of the first roller, and/or the hardness of the second roller is smaller than that of the first roller.
Optionally, the shore hardness of the first roller is 70-80, and the shore hardness of the second roller is 50-60.
Optionally, the apparatus further comprises: the main lifting mechanism is connected with the first roller and the second roller so as to control the integral lifting of the first roller and the second roller; and the correction lifting mechanism is connected with the first roller to control the lifting of the first roller, or is connected with the second roller to control the lifting of the second roller.
Optionally, the first roller is a roller that contacts with a filter side of the substrate when the substrate is clamped; the second roller is a roller which is contacted with the thin film transistor side of the substrate when the substrate is clamped.
In a second aspect, a polarizer attaching method is provided, where the method is applied to a polarizer attaching apparatus including a first roller and a second roller, and the method includes:
controlling the first roller and the second roller to clamp the substrate, and enabling the second contact size of the second roller to be larger than the first contact size of the first roller; the first contact size is the length of a contact area of the first roller and the substrate along the preset moving direction of the substrate; the second contact size is the length of a contact area of the second roller and the substrate along the preset moving direction of the substrate;
And controlling the first roller and the second roller to rotate so as to drive the substrate to move along the preset moving direction, and respectively rolling and attaching the first polaroid and the second polaroid to two sides of the substrate.
Optionally, the controlling the first roller and the second roller to clamp the substrate includes: and controlling the first roller and the second roller to clamp the substrate, and enabling the initial end part of a first polaroid on the first side of the substrate to be pressed between the first roller and the body of the substrate, and the initial end part of a second polaroid on the second side, opposite to the first side, of the substrate to be pressed between the second roller and the body of the substrate.
Optionally, the controlling the first roller and the second roller to clamp the substrate includes: controlling the first roller and the second roller to clamp the substrate, and enabling the starting end part of the first polaroid to be positioned on the side to be pressed of the midpoint of the contact area of the first roller and the substrate, and enabling the starting end part of the second polaroid to be positioned on the side to be pressed of the midpoint of the contact area of the second roller and the substrate; and the side to be pressed is the side opposite to the preset moving direction.
Optionally, the controlling the first roller and the second roller to clamp the substrate includes: and controlling the first roller and the second roller to clamp the substrate, and enabling the contact area of the first roller and the substrate to be located in a preset area, wherein the preset area is an orthographic projection of the contact area of the second roller and the substrate on a first side surface, and the first side surface is a surface pressed by the first roller on the substrate.
Optionally, the controlling the first roller and the second roller to clamp the substrate includes: and controlling the first roller and the second roller to clamp the substrate, and aligning the boundary of the contact area formed by the first roller and the substrate, which faces the preset moving direction, with the boundary of the contact area formed by the second roller and the substrate, which faces the preset moving direction.
Optionally, the controlling the first roller and the second roller to clamp the substrate includes: controlling the first roller and the second roller to clamp the substrate, and satisfying the following formula: d-d 2-1/2 d1, wherein d is the maximum polarizer misalignment distance of the first polarizer and the second polarizer relative to the substrate, and d1 is the first polarizer A contact size, d2 being the second contact size; wherein the content of the first and second substances,
d1 is the diameter of the first roller, D2 is the diameter of the second roller, b1 is the maximum distance the first roller is pressed into in the pressing direction, and b2 is the maximum distance the second roller is pressed into in the pressing direction.
Optionally, the controlling the rotation of the first roller and the second roller includes: the first roller is controlled to rotate in a first direction at a first angular speed, and the second roller is controlled to rotate in a second direction opposite to the first direction at a second angular speed, wherein the ratio of the first angular speed to the second angular speed is equal to the ratio of the diameter of the second roller to the diameter of the first roller.
Optionally, the controlling the first roller and the second roller to clamp the substrate includes: and controlling the first roller to press the filter side of the substrate, and controlling the second roller to press the thin film transistor side of the substrate so as to clamp the substrate.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
in the polarizer attaching device and method provided by the embodiment of the invention, the first roller and the second roller for clamping the substrate are improved, so that when the polarizer is attached to the clamped substrate, the second contact size of the second roller is larger than the first contact size of the first roller, namely, the length of the second roller for pressing the substrate along the preset moving direction of the substrate is larger than the length of the first roller for pressing the substrate in the same direction, so that the substrate with the staggered polarizer can be pressed, the improved device can also be adopted, and the second roller with larger pressing contact size is used for pressing the shorter side of the polarizer, so that the two rollers can start to press from the initial end parts of the polarizers on the two sides under the condition of keeping the pressing balance on the two sides. Thereby can be through the attached raise the efficiency that comes of both sides polaroid while, also can avoid indentation, bubble or polaroid quality problems such as drop through the inconsistent contact size of pressing that sets up two gyro wheels.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a diagram illustrating a polarizer attachment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a substrate clamped by the polarizer attaching apparatus according to the embodiment of the present invention;
FIG. 3 is a diagram illustrating a quality problem in the prior art;
FIG. 4 is a second diagram illustrating a quality problem in the prior art;
FIG. 5 is a third illustration of a quality problem in the prior art;
FIG. 6 is a schematic view of an embodiment of the present invention in which the diameter of the second roller is larger than the diameter of the first roller;
FIG. 7 is a schematic view of an embodiment of the present invention in which the hardness of the second roller is less than the hardness of the first roller;
FIG. 8 is a flowchart illustrating a method for attaching a polarizer according to an embodiment of the present invention;
FIG. 9 is a first step diagram illustrating the steps of clamping the substrate for polarizer attachment according to the present invention;
FIG. 10 is a step chart II illustrating the steps of clamping the substrate for polarizer attachment according to the embodiment of the present invention;
FIG. 11 is a step-by-step diagram III illustrating the steps of clamping the substrate for polarizer attachment in accordance with the present invention;
FIG. 12 is a step chart of a fourth step of pressing a substrate for polarizer attachment in accordance with an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1 and 2, fig. 1 is a structural diagram of a polarizer attachment apparatus according to an embodiment of the present invention, and fig. 2 is a schematic diagram of a substrate clamped by the polarizer attachment apparatus according to the embodiment of the present invention, the apparatus including:
A first roller 1 and a second roller 2 for nipping the substrate 32; when the first roller 1 and the second roller 2 clamp the substrate 32 to attach the polarizer to the substrate 32, the second contact size 21 of the second roller 2 is greater than the first contact size 11 of the first roller 1, wherein the first contact size 11 is a length of a contact area between the first roller 1 and the substrate 32 along a preset substrate moving direction a; the second contact dimension 21 is a length of a contact area between the second roller 2 and the substrate 32 along the preset moving direction a of the substrate.
Specifically, since the display panel of the borderless product needs to leave a device region or a paste region at the side edge of the thin film transistor, the second polarizer 33 on the thin film transistor side tends to be shorter than the first polarizer 31 on the filter side. The two rollers of the conventional double-roller polarizer attaching device have the same parameters, and are mainly suitable for attaching the polarizers 31 and 33 which are basically symmetrical (the distance between the end portions of the polarizers 31 and 33 on both sides and the edge of the substrate 32 is less than 3 mm). When the polarizers 31 and 33 on two sides are misaligned (the distance between the end portions of the polarizers 31 and 33 on two sides and the edge of the substrate body 32 is not less than 3mm), the current dual-roller polarizer attachment apparatus needs to keep the two rollers symmetrical with respect to the substrate in order to maintain the stress balance of the substrate, which may cause the polarizer 31 on one side shown in fig. 3 to be unable to be attached from the initial end portion, thereby causing the problem of indentation or bubbles, and cause the polarizer 33 on one side shown in fig. 4 to be unable to be pressed by the rollers, thereby causing the problem of dropping the polarizer 33. If the two rollers are dislocated to the proper polarizer pressing position, the substrate 32 may be deflected due to uneven stress on the substrate 32 as shown in fig. 5.
The polarizer attaching device 100 provided in this embodiment sets the first roller 1 and the second roller 2 to clamp the substrate 32 and the polarizers 31 and 33 for rolling and attaching the polarizers, the second contact size 21 is larger than the first contact size 11, so as to make the substrate 32 dislocated with the first polarizer 31 and the second polarizer 33, and an improved device may also be used, and the second polarizer 33 is pressed by the second roller 2 with a larger size of the contact area after pressing, so that the two rollers can start to press from the initial ends of the polarizers on both sides in a state of keeping both sides pressed in balance.
It should be noted that the circular roller in fig. 2 is a cross section of the cylindrical roller in fig. 1. In a specific attachment process, the polarizer attachment apparatus 100 is preferably a vertical attachment apparatus as shown in FIG. 2, i.e., the display surface of the substrate 32 is perpendicular to the ground plane during attachment, so that the attachment forces on both sides are close. Of course, the polarizer attachment apparatus 100 may also be a horizontal attachment apparatus, i.e., the display surface of the substrate 32 is parallel to the ground plane during attachment, which is not limited herein.
When the first roller 1 and the second roller 2 are used for clamping the substrate 32, the second contact size 21 of the second roller 2 is larger than the first contact size 11 of the first roller 1 in various ways, and three ways are listed as follows:
First, the diameter of the second roller 2 is set larger than that of the first roller 1.
As shown in fig. 6, in the case where the diameter of the second roller 2 is larger than that of the first roller 1, even if the hardnesses of the two rollers are the same, that is, the press-in amounts b1 and b2 of the two rollers are equal, it is possible to realize the second contact size 21 larger than the first contact size 11.
Second, the hardness of the second roller 2 is set to be smaller than that of the first roller 1.
As shown in fig. 7, in the case where the hardness of the second roller 2 is smaller than that of the first roller 1, even if the diameters of the two rollers are the same, since the second roller 2 is softer, when the two rollers nip the substrate 32, the second contact dimension 21 is larger than the first contact dimension 11 by the press-in amount b2 of the second roller 2 being larger than the press-in amount b1 of the first roller 1.
Optionally, the shore hardness of the first roller is 70-80, and the shore hardness of the second roller is 50-60, so as to obtain a larger difference between the second contact size 21 and the first contact size 11 on the basis of meeting the clamping pressure degree and the shape stability degree of the two rollers.
The hardness of the first roller 1 and the second roller 2 may be set by using different materials and different densities, which is not limited herein.
Thirdly, the diameter of the second roller 2 is larger than that of the first roller 1, and the hardness of the second roller 2 is smaller than that of the first roller 1.
By combining the first and second methods, a larger difference between the second contact dimension 21 and the first contact dimension 11 can be obtained, so that the polarizer attaching apparatus 100 can be applied to the substrate attachment in which the distance between the starting ends of the two-sided polarizers 31 and the edges of the substrate 32 is larger.
Of course, other ways of achieving the second contact dimension 21 being larger than the first contact dimension 11 may be used to provide the two rollers, and is not limited herein.
In an alternative embodiment, the polarizer attaching apparatus 100 may further include: the main lifting mechanism 9 is connected with the first roller 1 and the second roller 2 so as to control the integral lifting of the first roller 1 and the second roller 2; and a compensation lifting mechanism 10 connected with one of the first roller 1 or the second roller 2 to control the independent lifting of the first roller 1 or the second roller 2. The main lifting mechanism 9 can be a motor or an air cylinder and the like, and is used for driving the first roller 1 and the second roller 2 to lift together. The correction lifting mechanism 10 may be a motor, an air cylinder, or the like, and may have a rail 4 (lead screw) structure as shown in fig. 1, for example, to drive the first roller 1 or the second roller 2 to independently lift along the rail 4, so as to adjust the displacement of the two rollers on both sides of the substrate 32. The main lifting mechanism 9 and the correction lifting mechanism 10 are arranged to realize convenient automatic adjustment of the position of the roller without manual mechanical adjustment. Here, the lifting means that the roller is vertically lifted in a direction parallel to the substrate moving direction a.
In an alternative embodiment, the first roller 1 is a roller that contacts with the filter side of the substrate 32 when the substrate 32 is pressed, and the second roller 2 is a roller that contacts with the tft side of the substrate 32 when the substrate 32 is pressed, so as to meet the requirement of the installation layout of the frameless product.
As shown in fig. 1, the polarizer attaching apparatus 100 may further include a rotation driving mechanism 51 of the first roller 1 and a rotation driving mechanism 52 of the second roller 2, for example, a motor. The side parts of the two attaching rollers (the first roller 1 and the second roller 2) can be respectively provided with a supporting roller 6, the supporting rollers 6 are in parallel contact with the attaching rollers, the respective supporting rollers 6 are driven to rotate when the two attaching rollers rotate, the hardness of the supporting rollers 6 is greater than that of the two attaching rollers, for example, the supporting rollers made of metal materials are arranged to provide supporting force to prevent the attaching rollers from deforming in the attaching process of the optical filter. A plurality of press-in rollers 7 can be arranged on one side of the supporting roller 6 far away from the attaching roller, and the press-in rollers 7 are arranged on the bracket 8 and support and contact the supporting roller 6 so as to further provide a supporting effect for the supporting roller 6.
Based on the same inventive concept, an embodiment of the present invention further provides a polarizer attaching method, which is applied to the polarizer attaching apparatus 100 shown in fig. 1, as shown in fig. 8, which is a flowchart of the polarizer attaching method in the embodiment of the present invention, and the method includes:
Step S801, controlling a first roller 1 and a second roller 2 to clamp the substrate 32, wherein a second contact size 21 of the second roller 2 is greater than a first contact size 11 of the first roller; wherein, the first contact size 21 is a length of a contact area between the first roller 1 and the substrate 32 along a preset moving direction a of the substrate 32; the second contact size 11 is the length of the contact area between the second roller 2 and the substrate 32 along the preset moving direction a of the substrate 32;
step S802, controlling the first roller 1 and the second roller 2 to rotate, so as to drive the substrate 32 and the polarizers 31 and 33 to move along the predetermined moving direction a, and attaching the polarizers to two sides of the substrate by clamping.
Specifically, the step S801 of controlling the first roller 1 and the second roller 2 to clamp the substrate 32 may be divided into sub-steps as shown in fig. 9 to 12:
as shown in fig. 9, first, the substrate 32 and the both- side polarizers 31 and 33 are positioned by the suction cups or the grippers such that the substrate 32 is located at a predetermined position of the polarizer attaching apparatus 100 where the substrate 32 is about to enter between the first roller 1 and the second roller 2 to be nipped and driven by the first roller 1 and the second roller 2. And initial end portions of the polarizers 31 and 33 on both sides are respectively brought into contact with predetermined portions of the substrate 32, and the other opposite end portions are away from the substrate 32, so that the polarizers 31 and 33 are inclined with respect to the substrate 32 to facilitate the nip-bonding from the initial end portions.
Then, as shown in fig. 10, the main lifting mechanism 9 controls the first roller 1 and the second roller 2 to move to the centers of the two attachment rollers (the first roller 1 and the second roller 2) to align with the start end of any polarizer 31 to be clamped, and the correction lifting mechanism 10 controls the first roller 1 or the second roller 2 to move independently, so that the centers of the two attachment rollers are dislocated relative to the substrate 3 until the two attachment rollers align with the start ends of the polarizers 31 on the sides where the two attachment rollers are located, respectively. Specifically, the alignment may be that the centers of the two attaching rollers and the start end portion of any one of the polarizers 31 are located at the same horizontal plane, or that the distance between the horizontal plane where the centers of the two attaching rollers and the horizontal plane where the start end portion of any one of the polarizers 31 is located corresponds to a predetermined distance.
Next, as shown in fig. 11 and 12, the first roller 1 and the second roller 2 may be moved one after another, or the first roller 1 and the second roller 2 may be moved close to the substrate 2 to clamp the starting ends of the first polarizer 31 and the second polarizer 33 on the substrate 32, respectively. Optionally, one of the rollers may be used as a reference side, the other roller may be used as a movable side, the roller on the reference side is pushed to contact the substrate by the cylinder adjusted by the pressure regulating valve, and the roller on the movable side is controlled by the motor to move so as to accurately adjust the gap between the first roller 1 and the second roller 2. Optionally, the reference side roller is a second roller 2, and the movable side roller is a first roller 1. Optionally, under the condition that the thickness of the substrate 32 is 1mm and the thicknesses of the polarizers 31 and 33 are 0.2mm, the gap between the two attaching rollers can be adjusted between 0.4 mm and 1.0mm when the substrate 32 is not arranged between the two attaching rollers.
In an optional implementation process, in the process of controlling the first roller 1 and the second roller 2 to clamp the substrate 32 in step S801, quality problems such as indentation, bubble, polarizer falling off, or substrate 32 deflection in the attaching process can be avoided by adjusting the positions of the two attaching rollers, which is specifically described below:
it may be arranged to control the first roller 1 and the second roller 2 to nip the substrate 32 by using the first roller 1 to contact the first polarizer 31 having a longer length (the initial end is closer to the edge of the substrate on the side of the end), by using the second roller 2 to contact the second polarizer 33 having a shorter length (the initial end is farther from the edge of the substrate on the side of the end), to ensure that not only the initial end portion of the first polarizer 31 of the first side of the substrate 32 is pressed between the first roller 1 and the substrate 32, and the starting end of the shorter second polarizer 33 on the other side of the substrate 32 is also pressed between the second roller 2 and the substrate 32, therefore, the two attaching rollers can press the starting ends of the polaroids 31 and 33 on the two sides on the substrate 32, the problem that the polaroid in the figure 4 drops because the polaroid is not clamped is effectively avoided, and the problems of bubbles and indentation caused by starting clamping from the middle part of the polaroid in the figure 3 are also avoided.
Further, when the first roller 1 and the second roller 2 are controlled to clamp the substrate 32, it is ensured that the two attaching rollers can press the starting ends of the polarizers on the two sides onto the substrate 32, it is also required to ensure that the starting end of the first polarizer 31 is located on the side to be pressed of the midpoint of the contact area between the first roller 1 and the substrate 32, and the starting end of the second polarizer 33 is located on the side to be pressed of the midpoint of the contact area between the second roller 2 and the substrate 32; the side to be pressed is the side opposite to the preset moving direction of the substrate 32. As shown in fig. 2, in the vertical polarizer attaching apparatus, the predetermined moving direction of the substrate 32 during attaching the polarizer is upward (upward in the figure), and the side to be pressed is the lower side of the middle points O and O' of the contact areas between the two attaching rollers and the substrate 32. That is, it is necessary to ensure that the starting ends of the two polarizers are not only pressed against the substrate 32 by the two attaching rollers, but also both located at the lower side of the midpoints O and O'. Therefore, the problem of warping of the starting end of the polaroid due to insufficient pressure can be avoided, and the generation of starting end bubble lines can also be avoided.
Further, when the first roller 1 and the second roller 2 are controlled to clamp the substrate 32, it is ensured that the contact area of the first roller 1 and the substrate 32 is located in a preset area, wherein the preset area is an orthographic projection of the contact area of the second roller 2 and the substrate 32 on a first side surface, the first side surface is a surface of the substrate 32 pressed by the first roller 1, and the orthographic projection is a projection formed in a direction perpendicular to the first side surface. That is, when the substrate 32 is clamped, the boundary of the contact area formed by the first roller 1 and the substrate 32 does not exceed the orthographic projection of the boundary of the contact area formed by the second roller 2 and the substrate 32 on the first side surface, so that the two sides of the substrate 32 can be basically ensured to be stressed evenly, and the problem of substrate deflection caused by uneven stress on the substrate as shown in fig. 5 can be avoided.
For example, as shown in fig. 2, the upper boundary of the contact area formed by the first roller 1 and the substrate 32 in the vertical polarizer attaching apparatus cannot be higher than the upper boundary of the contact area formed by the second roller 2 and the substrate 32. Preferably, the upper boundary of the contact area formed by the first roller 1 and the substrate 32 is aligned with the upper boundary of the contact area formed by the second roller 2 and the substrate 32, so that the maximum polarizer misalignment distance can be obtained under the condition of basically ensuring that the stress on the two sides of the substrate is balanced.
In an alternative embodiment, the first roller 1 can be controlled to press the filter side of the substrate 32 when the substrate 32 is pressed by the first roller 1, and the second roller 2 can be controlled to press the tft side of the substrate 32 when the substrate 32 is pressed by the second roller 2, so as to meet the requirement of the installation layout of the frameless product.
After the two attaching rollers clamp the substrate 32 at the start position, step S802 is performed to control the first roller 1 and the second roller 2 to rotate simultaneously, so as to drive the substrate 32 and the polarizers on the two sides of the substrate to advance along the predetermined moving direction a, and further attach the polarizers on the two sides to the substrate 32 during the moving and clamping processes.
Alternatively, as shown in fig. 2, the first roller 1 may be controlled to rotate in a first direction c1 at a first angular velocity, and the second roller 2 may be controlled to rotate in a second direction c2 opposite to the first direction c1 at a second angular velocity, wherein the ratio of the first angular velocity to the second angular velocity is equal to the ratio of the diameter of the second roller to the diameter of the first roller. Therefore, the moving speeds of the two attaching rollers on the substrate 32 are consistent in the attaching process, and the moving stability of the substrate 32 in the attaching process of the polarizer is further ensured.
It should be noted that, when the substrate 32 is clamped, the second contact size of the second roller 2 is larger than the first contact size of the first roller 1, so that the polarizer on the side of the starting end farther from the edge of the substrate 32 can be clamped by the second roller 2 to adapt to the attachment of the polarizer in the misalignment. However, for different polarizer misalignment degrees, there are different requirements for the difference between the first contact size and the second contact size. If necessary, three pressing conditions can be simultaneously met: the two attaching rollers can uniformly press the starting end parts of the polaroids on the two sides on the substrate 32; the initial end parts of the two polaroids are positioned on the sides to be pressed of the middle points of the contact areas of the two side attaching rollers and the substrate 32; thirdly, if the contact area between the first roller 1 and the substrate 32 is located in the predetermined area, the following calculation method may be used to calculate the maximum misalignment distance between the centers of the two attaching rollers and the substrate 32, and further calculate the maximum misalignment distance between the polarizers on both sides and the substrate 32:
when the substrate 32 is clamped and pressed, the formula is adopted
(1) Calculating a first contact size 11 of a contact area of the first roller 1 and the substrate 32, wherein D1 is the first contact size 11, D1 is the diameter of the first roller 1, and b1 is the press-in amount of the first roller 1 (the press-in amount is the pressing-in force) The maximum distance it is pressed in the direction). Using a formula
(2) Calculating a second contact size 21 of a contact area between the second roller 2 and the substrate 32, wherein D2 is the second contact size 21, D2 is the diameter of the second roller 2, and b2 is the pressing amount of the second roller 2. The press-in amount is related to the hardness of the roller, under the same pressure, if the hardness is high, the press-in amount is small, and if the hardness is low, the press-in amount is large, so that the press-in amount can be adjusted through the setting of the hardness and the setting of the pressures on two sides.
If the above three pressing conditions are satisfied, the maximum roller misalignment distance of the centers of the two bonding rollers with respect to the substrate 32 is (d2-d1)/2, and the maximum roller misalignment distance is the maximum distance of the orthographic projections of the centers of the two bonding rollers on the same side of the substrate 32. At this time, the maximum polarizer misalignment distance of the two-sided polarizer applicable to the polarizer attachment apparatus with respect to the substrate 32 is d (d2-d1)/2+ d2/2 (d 2-1/2d1(3), and the maximum polarizer misalignment distance is the maximum distance of the orthographic projections of the two-sided polarizers on the same side of the substrate 32. Thus, the required d2 and d1 conditions may be set according to the offset distance between the polarizers 31 and 33 to be attached to the substrate 32, and the required d2 and d1 conditions may be achieved by improving the hardness or size of the roller.
And (3) is substituted into (1) and (2), whether the polaroid attaching device can be used for attaching the dislocated polaroid or not can be determined by judging whether the dislocated distance of the polaroid of the substrate to be attached is less than d, and if not, the diameter and/or hardness of an attaching roller needs to be further adjusted to obtain larger d.
For example, if two attaching rollers are not modified as provided in the present embodiment, the diameter is 80mm, the hardness is the same, and the pressing amount on both sides is 0.2 mm. The maximum polarizer dislocation distance can be calculated to be 4.46mm, and most frameless products are not suitable.
After the improvement provided by the embodiment is adopted, the diameter of the first roller 1 is assumed to be 40mm, and the pressing amount is assumed to be 0.15 mm; the diameter of the second roller 2 is 80mm, and the press-in amount is 0.25 mm. The maximum roller misalignment distance can be calculated to be 3.24mm, the maximum polarizer misalignment distance is 7.7mm, and accordingly the requirement for the substrate polarizer misalignment distance of a conventional frameless product to be 4-7 mm can be met, and the requirement for the substrate polarizer misalignment distance of the conventional frameless product to be 4-7 mm can be met.
Since the polarizer attaching method introduced in the embodiment of the present invention is a control method corresponding to the polarizer attaching device introduced in the embodiment of the present invention, and the specific implementation manner thereof has been described in the process of introducing the polarizer attaching device, based on the polarizer attaching device introduced in the embodiment of the present invention, a person skilled in the art can understand the specific flow and deformation of the method, and thus, no further description is given here. All the control methods corresponding to the polarizer attaching device of the embodiments of the present invention belong to the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
in the polarizer attaching device and method provided by the embodiment of the invention, the first roller and the second roller for clamping the substrate are improved, so that when the polarizer is attached to the clamped substrate, the second contact size of the second roller is larger than the first contact size of the first roller, namely, the length of the second roller for pressing the substrate along the preset moving direction of the substrate is larger than the length of the first roller for pressing the substrate in the same direction, so that the substrate with the staggered polarizer can be pressed, the improved device can also be adopted, and the second roller with larger pressing contact size is used for pressing the shorter side of the polarizer, so that the two rollers can start to press from the initial end parts of the polarizers on the two sides under the condition of keeping the pressing balance on the two sides. Thereby can be through the attached raise the efficiency simultaneously of both sides polaroid, also can avoid indentation, bubble or polaroid quality problems such as drop through the inconsistent contact size of pressing that sets up two gyro wheels.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of an embodiment may be adaptively changed and disposed in one or more apparatuses other than the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (13)
1. A polarizer attaching apparatus, comprising:
a first roller and a second roller; the first roller and the second roller are used for clamping the substrate and rolling and attaching the polaroid to two sides of the substrate;
when the first roller and the second roller clamp the substrate to attach the polarizer, a second contact size of the second roller is larger than a first contact size of the first roller, wherein the first contact size is the length of a contact area of the first roller and the substrate along a preset moving direction of the substrate; the second contact size is the length of a contact area of the second roller and the substrate along the preset moving direction of the substrate.
2. The apparatus of claim 1, wherein:
the diameter of the second roller is larger than that of the first roller, and/or the hardness of the second roller is smaller than that of the first roller.
3. The apparatus of claim 2, wherein:
the Shore hardness of the first roller is 70-80, and the Shore hardness of the second roller is 50-60.
4. The apparatus of claim 1, further comprising:
The main lifting mechanism is connected with the first roller and the second roller so as to control the integral lifting of the first roller and the second roller;
and the correction lifting mechanism is connected with the first roller to control the lifting of the first roller, or is connected with the second roller to control the lifting of the second roller.
5. The apparatus of any of claims 1-4, wherein:
the first roller is a roller which is contacted with the side of the optical filter of the substrate when the substrate is clamped;
the second roller is a roller which is contacted with the thin film transistor side of the substrate when the substrate is clamped.
6. A polarizer attaching method is applied to a polarizer attaching device comprising a first roller and a second roller, and comprises the following steps:
controlling the first roller and the second roller to clamp the substrate, and enabling the second contact size of the second roller to be larger than the first contact size of the first roller; the first contact size is the length of a contact area of the first roller and the substrate along the preset moving direction of the substrate; the second contact size is the length of a contact area of the second roller and the substrate along the preset moving direction of the substrate;
And controlling the first roller and the second roller to rotate so as to drive the substrate to move along the preset moving direction, and respectively rolling and attaching the first polaroid and the second polaroid to two sides of the substrate.
7. The method of claim 6, wherein the controlling the first roller and the second roller to nip the substrate comprises:
and controlling the first roller and the second roller to clamp the substrate, and enabling the initial end part of the first polaroid on the first side of the substrate to be pressed between the first roller and the body of the substrate, and the initial end part of the second polaroid on the second side of the substrate, which is opposite to the first side, to be pressed between the second roller and the body of the substrate.
8. The method of claim 7, wherein the controlling the first roller and the second roller to nip the substrate comprises:
controlling the first roller and the second roller to clamp the substrate, and enabling the starting end part of the first polaroid to be positioned on the side to be pressed of the midpoint of the contact area of the first roller and the substrate, and enabling the starting end part of the second polaroid to be positioned on the side to be pressed of the midpoint of the contact area of the second roller and the substrate; and the side to be pressed is the side opposite to the preset moving direction.
9. The method of claim 6, wherein the controlling the first roller and the second roller to nip the substrate comprises:
and controlling the first roller and the second roller to clamp the substrate, and enabling the contact area of the first roller and the substrate to be located in a preset area, wherein the preset area is an orthographic projection of the contact area of the second roller and the substrate on a first side surface, and the first side surface is a surface pressed by the first roller on the substrate.
10. The method of claim 6, wherein the controlling the first roller and the second roller to nip the substrate comprises:
and controlling the first roller and the second roller to clamp the substrate, and aligning the boundary of the contact area formed by the first roller and the substrate, which faces the preset moving direction, with the boundary of the contact area formed by the second roller and the substrate, which faces the preset moving direction.
11. The method of claim 6, wherein the controlling the first roller and the second roller to nip the substrate comprises:
controlling the first roller and the second roller to clamp the substrate, and satisfying the following formula:
d-d 2-1/2 d1, wherein d is the maximum polarizer misalignment distance of the first polarizer and the second polarizer relative to the substrate, d1 is the first contact size, and d2 is the second contact size; wherein the content of the first and second substances,
d1 is the diameter of the first roller, D2 is the diameter of the second roller, b1 is the maximum distance the first roller is pressed into in the pressing direction, and b2 is the maximum distance the second roller is pressed into in the pressing direction.
12. The method of claim 6, wherein said controlling rotation of said first roller and said second roller comprises:
controlling the first roller to rotate along a first direction at a first angular speed, and controlling the second roller to rotate along a second direction opposite to the first direction at a second angular speed, wherein the ratio of the first angular speed to the second angular speed is equal to the ratio of the diameter of the second roller to the diameter of the first roller.
13. The method of any of claims 6-12, wherein the controlling the first roller and the second roller to nip the substrate comprises:
and controlling the first roller to press the filter side of the substrate, and controlling the second roller to press the thin film transistor side of the substrate so as to clamp the substrate.
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