CN116176100A - Film pasting equipment and film pasting method for pasting optical film - Google Patents

Abstract

The invention discloses a film pasting device and a film pasting method for pasting an optical film, wherein the film pasting device comprises a device bracket, an optical measuring device, a first pasting platform and a second pasting platform; at least one of the first bonding platform and the second bonding platform is movably arranged on the equipment support, the first bonding platform is used for adsorbing a first to-be-bonded membrane of the optical membrane, the second bonding platform is used for adsorbing a second to-be-bonded membrane of the optical membrane, and the first bonding platform and the second bonding platform can be oppositely arranged; the optical measuring device is used for detecting optical parameters of the optical diaphragm; under the condition that the optical parameters of the optical membrane are preset optical parameters, the first laminating platform and the second laminating platform are mutually laminated, so that the first membrane to be laminated and the second membrane to be laminated are laminated. The problem that the alignment laminating precision of the optical film is poor can be solved by the scheme.

Description

Film pasting equipment and film pasting method for pasting optical film

Technical Field

The invention relates to the technical field of optical film lamination, in particular to a laminating device and a laminating method for laminating an optical film.

Background

With the continuous development of electronic devices, the electronic devices have become indispensable daily necessities for people, such as mobile phones, notebook computers, personal digital assistants, and other electronic devices. The display module is an important component of the electronic device and is used for displaying different information. In order to improve the display effect of the display module, the display module is generally provided with a plurality of types of optical films so as to reduce the interference of external interference factors on the display module, thereby improving the display effect of the display module.

For example, the optical film compounded by the polaroid and the phase difference film can solve the problems of large-visual-angle light leakage, integral black and the like of the display module. For another example, the optical film compounded by the phase difference films with different optical axis angles can prevent the reflected light of the metal electrode in the display module from entering human eyes to improve the contrast ratio, so as to reduce the interference of the ambient light on the display.

However, each film layer of the optical film has a certain directionality, so that the lamination angle error is larger in the lamination process of each film of the optical film in the related art, so that the alignment lamination precision of the optical film is poor.

Disclosure of Invention

The invention discloses a film pasting device and a film pasting method for pasting an optical film, which are used for solving the problem of poor alignment pasting precision of the optical film.

In order to solve the problems, the invention adopts the following technical scheme:

a film laminating device for laminating an optical film, the film laminating device comprising a device bracket, an optical measuring device, a first laminating platform and a second laminating platform;

at least one of the first attaching platform and the second attaching platform is movably arranged on the equipment support, the first attaching platform is used for adsorbing a first to-be-attached membrane of the optical membrane, the second attaching platform is used for adsorbing a second to-be-attached membrane of the optical membrane, and the first attaching platform and the second attaching platform can be oppositely arranged;

the optical measuring device is used for detecting optical parameters of the optical diaphragm; the optical measurement device comprises a light source and a measurement mechanism, the first lamination platform and the second lamination platform are respectively positioned between the light source and the measurement mechanism, and light rays emitted by the light source sequentially pass through the first to-be-laminated membrane and the second to-be-laminated membrane and then are received by the measurement mechanism;

the first attaching platform and the second attaching platform can move relatively and can be used for adjusting the relative positions of the first to-be-attached membrane and the second to-be-attached membrane so as to adjust the optical parameters of the optical membrane to preset optical parameters;

Under the condition that the optical parameters of the optical membrane are the preset optical parameters, the first laminating platform and the second laminating platform are mutually laminated, so that the first membrane to be laminated and the second membrane to be laminated are laminated.

A film-sticking method for an optical film, the film-sticking method being applied to the film-sticking apparatus described above, the film-sticking method comprising:

respectively adsorbing a first to-be-laminated membrane and a second to-be-laminated membrane to a first lamination platform and a second lamination platform;

detecting optical parameters of the optical membrane through the optical measuring device, and adjusting the optical parameters of the optical membrane to preset optical parameters;

under the condition that the optical parameters of the optical membrane are the preset optical parameters, the first laminating platform and the second laminating platform are driven to laminate mutually, so that the first membrane to be laminated and the second membrane to be laminated are laminated mutually.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the film laminating equipment disclosed by the invention, the light rays emitted by the light source can pass through the first film to be laminated and the second film to be laminated which are adsorbed on the first laminating platform and the second laminating platform, and the measuring mechanism receives the light rays passing through the first film to be laminated and the second film to be laminated, so that the optical parameters of the first film to be laminated and the second film to be laminated after being overlapped can be measured, and the optical parameters of the first film to be laminated and the second film to be laminated are the optical parameters of the optical film. Under the condition that the optical parameters of the optical membrane exceed the preset optical parameters, the relative positions of the first to-be-laminated membrane and the second to-be-laminated membrane can be adjusted by adjusting the relative positions of the first to-be-laminated platform and the second to-be-laminated platform, and then the optical parameters of the optical membrane are adjusted to the preset optical parameters. Under the condition that the optical parameters of the optical membrane are preset optical parameters, the first laminating platform and the second laminating platform can be driven to laminate mutually, so that the first membrane to be laminated and the second membrane to be laminated are laminated mutually. In the scheme, the optical parameters of the films to be bonded are measured, the relative positions of the films to be bonded can be adjusted, so that the optical parameters of the films to be bonded are adjusted to preset optical parameters, and then the bonding operation of the optical films is performed. According to the technical scheme, the alignment and lamination precision of the optical membrane can be improved, so that the lamination angle error of the optical membrane is reduced, and the optical membrane is promoted to have better optical performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 and fig. 2 are schematic structural diagrams of a film laminating apparatus according to an embodiment of the present invention;

fig. 3 to 9 are schematic structural views of part of the film laminating apparatus according to the embodiment of the present invention;

fig. 10 is a flowchart of a film laminating method according to an embodiment of the present invention.

Reference numerals illustrate:

100-equipment support, 110-support main body, 120-sliding platform, 200-optical measuring device, 210-light source, 220-measuring mechanism, 221-light measuring instrument, 222-terminal equipment, 230-power supply, 300-first attaching platform, 310-first adsorption surface, 320-first light transmission area, 330-first vent, 400-second attaching platform, 410-second adsorption surface, 420-second light transmission area, 430-second vent, 500-detection calibration piece, 510-first calibration membrane, 520-second calibration membrane, 610-first rotating piece, 620-second rotating piece, 710-first limiting piece, 720-second limiting piece, 730-attaching roller, 740-adjusting piece, 750-elastic piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The technical scheme disclosed by each embodiment of the invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 9, an embodiment of the present invention discloses a film laminating apparatus for laminating an optical film, the disclosed film laminating apparatus including an apparatus bracket 100, an optical measuring device 200, a first lamination stage 300, and a second lamination stage 400.

The device bracket 100 provides a mounting base for other component parts of the film laminating apparatus. At least one of the first bonding stage 300 and the second bonding stage 400 is movably disposed to the apparatus bracket 100. The first lamination stage 300 is used for adsorbing a first film to be laminated of the optical film. The second attaching platform 400 is used for adsorbing a second film to be attached of the optical film. The first bonding stage 300 and the second bonding stage 400 may be disposed opposite to each other. Because the first lamination stage 300 and the second lamination stage 400 need to laminate the two films to be laminated together, the first film to be laminated and the second film to be laminated need to be adsorbed on the opposite surfaces of the first lamination stage 300 and the second lamination stage.

Specifically, the first attaching platform 300 has a first adsorption surface 310, the first film to be attached is adsorbed to the first adsorption surface 310, the second attaching platform 400 has a second adsorption surface 410, and the second film to be attached is adsorbed to the second adsorption surface 410. In the bonding operation, the first suction surface 310 and the second suction surface 410 are disposed opposite to each other.

The optical measurement device 200 is used for detecting optical parameters of the optical film. The optical parameters of the optical film refer to the optical parameters of the first film to be laminated and the second film to be laminated after being overlapped. The optical measurement device 200 includes a light source 210 and a measurement mechanism 220, the first bonding stage 300 and the second bonding stage 400 are respectively located between the light source 210 and the measurement mechanism 220, and the measurement mechanism 220 is configured to receive light emitted by the light source 210. The light source 210 and the measuring mechanism 220 may be disposed on the device bracket 100, and of course, the light source 210 and the measuring mechanism 220 may also be separately disposed on a mounting bracket for mounting and fixing.

The light emitted by the light source 210 can pass through the first to-be-laminated membrane and the second to-be-laminated membrane adsorbed on the first lamination platform 300 and the second lamination platform 400, and the measuring mechanism 220 receives the light passing through the first to-be-laminated membrane and the second to-be-laminated membrane, so that the optical parameters of the first to-be-laminated membrane and the second to-be-laminated membrane after lamination can be measured. The optical parameters may be ellipsometry, refractive index, optical axis angle, and other optical parameters, but may be other optical parameters, and are not limited herein.

The first lamination platform 300 and the second lamination platform 400 can relatively move, so that the relative positions of the first to-be-laminated film and the second to-be-laminated film can be adjusted by adjusting the relative positions of the first lamination platform 300 and the second lamination platform 400, and the optical parameters of the optical film can be adjusted to preset optical parameters; the preset optical parameters herein refer to parameters that can ensure the optical properties of the product in the final product. For example, the ellipsometry of the optical film compounded by the polarizer and the phase difference film may be greater than or equal to 98%, so that the preset optical parameter of the optical film may be greater than or equal to 98%.

In the case that the optical parameters of the optical film are preset optical parameters, the first bonding platform 300 and the second bonding platform 400 are bonded to each other, so that the first film to be bonded and the second film to be bonded are bonded.

In a specific operation process, first, the first to-be-laminated film and the second to-be-laminated film are respectively adsorbed to the first lamination platform 300 and the second lamination platform 400. Then, the light source 210 emits light, the light passes through the first to-be-laminated membrane and the second to-be-laminated membrane adsorbed on the first lamination platform 300 and the second lamination platform 400, and the measuring mechanism 220 receives the light passing through the first to-be-laminated membrane and the second to-be-laminated membrane so as to measure the optical parameters of the first to-be-laminated membrane and the second to-be-laminated membrane after lamination. When the optical parameter measured by the measuring mechanism 220 exceeds the preset optical parameter, the optical parameter of the optical film is adjusted to the preset optical parameter by adjusting the relative positions of the first bonding platform 300 and the second bonding platform 400. And then the first lamination platform 300 and the second lamination platform 400 are driven to laminate the first to-be-laminated membrane and the second to-be-laminated membrane.

In the embodiment of the application disclosed, the pad pasting equipment can measure the optical parameter of treating the laminating diaphragm, can also adjust the position of treating the laminating diaphragm simultaneously to adjust the optical parameter of optical diaphragm, thereby improved the counterpoint laminating precision of optical diaphragm, and then reduced the laminating angle error of optical diaphragm, impel optical diaphragm to have better optical performance.

In addition, in the scheme disclosed by the application, the optical performance of the product is effectively controlled before the films to be laminated are combined into the optical film, so that the optical performance and effect of the product are guaranteed, the quality control of the product before generation is realized, and the yield of the product is greatly prompted.

In addition, the laminating equipment disclosed by the application does not limit the size of the membrane material and the type of the membrane material, so that the laminating equipment can be compatible with various types of membrane materials and membrane materials with multiple sizes. Therefore, the film sticking equipment disclosed by the application has better compatibility.

The application discloses integrated optics of pad pasting equipment detects, counterpoint is adjusted, multiple technologies such as diaphragm laminating to pad pasting efficiency and pad pasting precision have effectively been improved.

In the above embodiment, the measuring mechanism 220 may include a light meter 221, and the light meter 221 may detect an optical parameter of the film to be bonded. Alternatively, the light measuring instrument 221 may be a polarization measuring instrument, a light sensor, or other components, but the light detecting instrument is not limited herein. The polarization measuring device may be used to detect the linear polarization, circular polarization, ellipsometry, and other optical parameters of the optical film, so the measurement mechanism 220 may generally select the polarization measuring device. The specific principles of operation of the polarization measuring device are known in the art and are not limited herein.

In another alternative embodiment, measurement mechanism 220 may include light gauge 221 and terminal device 222, and first bonding stage 300 and second bonding stage 400 may be positioned between light source 210 and light gauge 221, respectively, with light source 210 opposite light gauge 221 and coaxially disposed. The light meter 221 is configured to receive light emitted from the light source 210. The terminal device 222 is electrically connected to the light meter 221, and is used for processing and displaying the optical parameters detected by the light meter 221. In this solution, the data detected by the light meter 221 is transmitted to the terminal device 222, and the terminal device 222 can process the data detected by the light meter 221 and display the processed optical parameters on the display panel, so as to facilitate the observation of the operator.

In a specific operation, the terminal device 222 is provided with optical data testing software, such as ellipsometry software. The data detected by the light meter 221 is transmitted to the terminal device 222, and the optical data testing software in the terminal device 222 displays specific optical test data through an output column of the software. It is thus possible to determine whether the optical parameters of the product specifications are met based on the output optical test data.

In this scheme, the optical parameters of the film to be laminated can be observed more clearly through the terminal device 222, so that on-line detection is realized, and the working efficiency of the film laminating device is improved.

Optionally, the terminal device 222 may be a computer, a tablet computer, an upper computer, or the like. Of course, the terminal device 222 may also be other structures for processing and displaying data, and is not limited herein. The optical test software may be selected according to the optical parameters actually required, and is not limited herein.

In the above embodiment, the optical measurement device 200 may further include a power supply 230, where the power supply 230 is configured to supply power to the light source 210, the light measuring instrument 221, and the terminal device 222.

Alternatively, the light source 210 may be a light emitting component such as a laser, a spotlight, or the like, and of course, the light source may be other light emitting components, which is not limited herein.

In order to improve the film laminating accuracy of the film laminating apparatus, in another alternative embodiment, the film laminating apparatus may further include a detection calibration member 500, where the detection calibration member 500 may be disposed between the light source 210 and the measuring mechanism 220, and the light emitted by the light source 210 passes through the detection calibration member 500 and then enters the measuring mechanism 220, where the detection calibration member 500 is used to calibrate the optical path of the optical measuring device 200.

In a specific operation process, before the optical film is attached, the optical path of the optical measurement device 200 is first calibrated, the detection calibration piece 500 is placed between the light source 210 and the measurement mechanism 220, so that the light emitted by the light source 210 passes through the detection calibration piece 500 and then enters the measurement mechanism 220, and then the optical measurement device 200 is in an optimal state by adjusting the relative positions of the light source 210, the measurement mechanism 220 and the detection calibration piece 500. Then, the film pasting operation is carried out.

For example, the detection calibration member 500 may be a polarizer, and the preset optical parameters are obtained through the position of the polarizer, the relative positions of the light source 210 and the measuring mechanism 220, so that the optical measuring device 200 has better detection accuracy.

In this embodiment, the optical path of the optical measurement device 200 is calibrated by the detection calibration piece 500, so that the alignment and lamination accuracy of the optical film can be further improved, and the optical performance of the optical film can be further improved.

In the above embodiments, the single calibration diaphragm has low calibration accuracy. Based on this, in another alternative embodiment, the detection calibration piece 500 may include a first calibration membrane 510 and a second calibration membrane 520, and the first calibration membrane 510 may be disposed opposite the second calibration membrane 520. In this scheme, the optical path of the optical measurement device 200 is calibrated by the two calibration films, so that the measurement of the real bonding state of the two films to be bonded can be simulated, and the optical path calibration accuracy of the optical measurement device 200 is higher.

In the above embodiment, one of the first calibration film 510 and the second calibration film 520 may be a linear polarizer, and the other may be a circular polarizer. Alternatively, one of the first and second calibration films 510 and 520 may be a polarizer, and the other may be a phase difference film. Of course, the first calibration film 510 and the second calibration film 520 may have other structures, and the first calibration film 510 and the second calibration film 520 may be flexibly selected according to the laminated film materials.

In the above embodiment, after the optical path correction of the optical measurement device 200 is completed, the first calibration film 510 and the second calibration film 520 need to be removed from between the light source 210 and the measurement mechanism 220. For example, in performing the calibration operation, the first calibration film 510 and the second calibration film 520 may be respectively adsorbed on the first bonding stage 300 and the second bonding stage 400. For another example, a support member for supporting the first calibration membrane 510 and the second calibration membrane 520 may be disposed on the device support 100, where the support member drives the first calibration membrane 510 and the second calibration membrane 520 to rotate between the light source 210 and the measurement mechanism 220 when the optical path needs to be calibrated; when the calibration is completed, the support rotates to the area outside the light source 210 and the measuring mechanism 220, and the area of the film is not affected.

When the same optical film is attached, only one calibration can be performed, and then the film is attached, so that multiple calibrations are not needed. When changing different types of optical films, recalibration is required using the corresponding detection calibrator 500.

In the above embodiment, in order to enable the first bonding platform 300 and the second bonding platform 400 to pass light, the first bonding platform 300 and the second bonding platform 400 may be made of a light-transmitting material, and the cost of the materials for manufacturing the first bonding platform 300 and the second bonding platform 400 is high.

Based on this, in another alternative embodiment, the first bonding stage 300 may be provided with the first light-transmitting region 320. The second attaching platform 400 may be provided with a second light-transmitting region 420. The first light-transmitting region 320 and the second light-transmitting region 420 may be disposed opposite to each other. The light source 210 and the measuring mechanism 220 are disposed opposite the first light transmissive region 320 and the second light transmissive region 420. The light emitted by the light source 210 passes through the first light-transmitting region 320 and the second light-transmitting region 420 and then enters the measuring mechanism 220.

In this scheme, first laminating platform 300 and second laminating platform 400 are provided with the region that can the printing opacity, therefore make first laminating platform 300 and second laminating platform 400 little to the restriction of material, consequently can reduce the cost of manufacture of laminating equipment.

Alternatively, the first light-transmitting area 320 and the second light-transmitting area 420 may be light-transmitting holes, that is, through holes penetrating in the thickness direction are formed in the first bonding stage 300 and the second bonding stage 400. Alternatively, the first light-transmitting region 320 is a region where the light-transmitting material embedded in the first bonding stage 300 is located, and the second light-transmitting region 420 is a region where the light-transmitting material embedded in the second bonding stage 400 is located. For example, light-transmitting quartz glass is embedded in each of the first bonding stage 300 and the second bonding stage 400. Of course, other light transmissive materials may be embedded as well, without limitation.

In the above embodiment, the first to-be-laminated membrane and the second to-be-laminated membrane may be adsorbed on the corresponding lamination platform by the adhesion between the membrane and the lamination platform. In this scheme, because the diaphragm also has certain dead weight, consequently cause the diaphragm to drop from laminating platform easily to make laminating equipment's reliability relatively poor.

Based on this, in another alternative embodiment, the film laminating apparatus further includes a vacuum pump, and the first lamination stage 300 may be provided with a first vent 330, and the first vent 330 may be in communication with the vacuum pump. In this scheme, the vacuum pump can bleed to first air vent 330, and first air vent 330 is the negative pressure this moment to can adsorb first film to be laminated on first laminating platform 300, first air vent 330 has great adsorption affinity to first film to be laminated, consequently can avoid first film to be laminated to drop from first laminating platform 300, thereby has further improved the reliability of pad pasting equipment.

Further, the number of the first ventilation holes 330 may be multiple, and the first ventilation holes 330 are arranged at intervals, so that the first ventilation holes 330 are convenient to be communicated with the vacuum pump, a first connection channel is arranged in the first lamination platform 300, and the first ventilation holes 330 are communicated with the vacuum pump through the first connection channel.

Similarly, the second attaching platform 400 may be provided with a second air vent 430, and the second air vent 430 may be in communication with a vacuum pump. The effect of this scheme is the same as the above scheme and will not be described again.

Further, the number of the second air holes 430 may be multiple, and the second air holes 430 are arranged at intervals, so that the second air holes 430 are convenient to be communicated with the vacuum pump, a second connecting channel is arranged in the second attaching platform 400, and the second air holes 430 are communicated with the vacuum pump through the second connecting channel.

In the above-mentioned scheme, when the first to-be-laminated diaphragm is laminated with the second to-be-laminated diaphragm, the suction pressure of the first vent 330 or the second vent 430 can be reduced to reduce the adsorption force of the first to-be-laminated diaphragm or the second to-be-laminated diaphragm, so that the first to-be-laminated diaphragm and the second to-be-laminated diaphragm can be better laminated.

In another scheme, the first to-be-laminated membrane and the second to-be-laminated membrane can be adsorbed with the corresponding lamination platform through electrostatic force.

In an alternative embodiment, the second conforming platform 400 is movable in a horizontal direction on the support surface of the equipment rack 100, where the movement may be either movement or rotation or a combination of movement and rotation. The second attaching platform 400 may be disposed between the first attaching platform 300 and the device support 100, where the first attaching platform 300 may be connected to the device support 100 through a telescopic mechanism, and the first attaching platform 300 may be close to or far away from the second attaching platform 400 along the vertical direction.

In a specific working process, the first lamination platform 300 moves to a preset position along a direction away from the second lamination platform 400, and the first film to be laminated and the second film to be laminated are respectively adsorbed to the corresponding lamination platforms. The optical parameters of the optical film are then measured by the optical measurement device 200. The second lamination platform 400 is driven to move so as to adjust the optical parameters of the optical membrane, and the second lamination platform 400 is lowered until the first membrane to be laminated and the second membrane to be laminated are laminated under the condition that the optical parameters of the optical membrane are preset optical parameters.

In another alternative embodiment, one end of the first attaching platform 300 may be rotatably coupled to the apparatus bracket 100 by the first rotating member 610, and the first attaching platform 300 may be rotated about the first rotation axis. Alternatively, the first rotating member 610 may be a rotating member such as a shaft, a hinge, or the like, although the first rotating member 610 may be other rotating structures, which are not limited herein. The first axis of rotation here may be a central axis of the first rotation member 610. The direction of the first axis of rotation is as indicated by the X-axis in fig. 7.

The second attaching platform 400 may be rotatably coupled to the apparatus bracket 100 by a second rotating member 620. The second conforming platform 400 can rotate about a second axis of rotation. Alternatively, the second rotating member 620 may be a rotating shaft, a crossed roller bearing, or the like. The second axis of rotation here may be the central axis of the second rotor. The direction of the second axis of rotation is as shown by the Z-axis in fig. 6.

The second axis of rotation may be perpendicular to the second conforming platform 400, the first axis of rotation may be perpendicular to the second axis of rotation, and at least a portion of the second conforming platform 400 may be located between the equipment support 100 and the first conforming platform 300.

In this solution, the second rotation axis may be perpendicular to the second attaching platform 400, the second rotation axis is perpendicular to the thickness direction of the second attaching platform 400, and the first rotation axis is perpendicular to the second rotation axis, so that the second rotation axis is perpendicular to the plane where the first rotation axis is located, and the second attaching platform 400 rotates in the plane where the first rotation axis is located, so that the second attaching platform 400 rotates relative to the first attaching platform 300. At this time, not only the angle adjustment of the first bonding stage 300 and the second bonding stage 400 in the parallel direction can be realized, but also the movement direction of the second bonding stage 400 is simple.

In addition, one end of the first lamination platform 300 is rotatably connected with the equipment support 100 through the first rotating member 610, so that the first lamination platform 300 can be turned over, one side of the first lamination platform 300, to which the first membrane to be laminated is attached, is turned upwards, and the first lamination platform 300 and the second lamination platform 400 are convenient to perform the adsorption operation of the membrane to be laminated.

In another alternative embodiment, the device bracket 100 may include a bracket body 110 and a sliding platform 120, the first fitting platform 300 may be connected to the bracket body 110 by a first rotation member 610, and the sliding platform 120 may be slidably connected to the bracket body 110 in a first direction. The sliding platform 120 may be disposed between the second rotating member 620 and the bracket main body 110, and the second attaching platform 400 may be rotatably connected to the sliding platform 120 through the second rotating member 620. The first direction may intersect the first rotation axis and be perpendicular to the second rotation axis. Preferably, the first direction may be perpendicular to the first rotation axis. The first direction is the direction shown by the Y-axis in fig. 3.

In a specific film pasting operation process, the first laminating platform 300 is pressed down, the first laminating platform 300 rotates, one end of the first laminating platform 300, deviating from the first rotating piece 610, is contacted with the second laminating platform 400, so that the first film to be laminated and the first end of the second film to be laminated are laminated together, then the sliding platform 120 is driven to move in the direction deviating from the first rotating piece 610, so that one end of the first laminating platform 300, deviating from the first rotating piece 610, is pressed from the first end of the first film to be laminated and the first end of the second film to be laminated to the tail end of the first film to be laminated and the second film to be laminated, and the first film to be laminated and the second film to be laminated are laminated.

In this scheme, through driving second laminating platform 400 along first direction for second laminating platform 400 removes to can make at the in-process of pad pasting, the tip of first laminating platform 300 can treat to laminate the diaphragm with the second and exert pressure to first diaphragm and the second, thereby makes first diaphragm and the second of treating laminating more inseparable laminating together, improves the reliability of pad pasting.

Alternatively, the support main body 110 and the sliding platform 120 may be slidably connected through a sliding rail assembly, a sliding rail may be provided on the support main body 110, and the sliding platform 120 is connected with a slider, where the slider is slidably matched with the sliding rail. Or the sliding platform 120 is provided with a sliding protrusion, and the bracket main body 110 is provided with a sliding groove which is in sliding fit with the sliding protrusion. Of course, the bracket main body 110 and the sliding platform 120 may also be slidably engaged by other sliding members, which is not limited herein.

Further, the film laminating apparatus may further include an attaching roller 730, where the attaching roller 730 may be disposed at an end of the first laminating platform 300 opposite to the first rotating member 610, and the attaching roller 730 may be used for rolling the first film to be laminated and the second film to be laminated. In this scheme, the attaching roller 730 applies more uniform pressure to the first to-be-attached membrane and the second to-be-attached membrane, thereby further improving the reliability of the membrane. In addition, the pressure of the attaching roller 730 is relatively uniform, and the contact area with the attaching membrane is relatively large, so that the first membrane to be attached and the second membrane to be attached are not easily damaged.

Alternatively, the attaching roller 730 may be fixedly connected to the first attaching platform 300, or may be in rolling connection with the first attaching platform 300. When the attaching roller 730 is in rolling connection with the first attaching platform 300, the rolling axis of the attaching roller 730 is parallel to the first rotation axis.

In order to avoid the sliding platform 120 from being separated from the bracket body 110, in an alternative embodiment, the bracket body 110 may be provided with a first stopper 710 and a second stopper 720, the sliding platform 120 may be located between the first stopper 710 and the second stopper 720, and the first stopper 710 and the second stopper 720 may be in a stopper-fit with the sliding platform 120 along a first direction.

In this embodiment, the first limiting member 710 and the second limiting member 720 can limit the sliding distance of the sliding platform 120, so as to avoid the sliding platform 120 from being separated from the bracket main body 110.

Optionally, when the ends of the first attaching platform 300 and the second attaching platform 400 facing away from the first rotating member 610 are flush, the sliding platform 120 abuts against the first limiting member 710; when the end of the first attaching platform 300 opposite to the first rotating member 610 is flush with the end of the second attaching platform 400 opposite to the first rotating member 610, the sliding platform 120 abuts against the second limiting member 720.

In the above embodiment, the first limiting member 710 and the second limiting member 720 may be limiting structures such as limiting protrusions and limiting screws, however, the first limiting member 710 and the second limiting member 720 may also be other limiting structures, which is not limited herein.

In the above embodiment, the operator may directly rotate the second attaching platform 400 by means of manual driving, however, this method has poor adjustment accuracy. To this end, in another alternative embodiment, the adjusting member 740 may be disposed on the device bracket 100, and the adjusting member 740 may be connected to the second attaching platform 400, where the adjusting member 740 is used to adjust the relative position of the second attaching platform 400 and the first attaching platform 300, so as to adjust the optical parameters of the optical film. In this scheme, through adjusting part 740, can be more accurate adjust second laminating platform 400 for the rotation angle of second laminating platform 400 to the adjustment accuracy of second laminating platform 400 has been improved.

Alternatively, the adjustment member 740 may include an adjustment knob and a transmission mechanism, which may be a rack and pinion transmission, a worm and gear transmission. When the second attaching platform 400 is rotated, the adjusting knob is screwed, the adjusting knob drives the transmission mechanism to move, and the transmission mechanism drives the second attaching platform 400 to rotate. Of course, the adjusting member 740 may also be a micrometer, and a micro-motion screw rod in the micrometer is in transmission connection with the second attaching platform 400, and then is adjusted by screwing an adjusting knob of the micrometer. The angle precision of the micrometer can reach 0.1 degrees, so that the high-precision rotation alignment function can be realized. Other transmission mechanisms may of course be employed, without limitation.

To further improve the rotational accuracy of the second attaching platform 400, in another alternative embodiment, the film laminating apparatus further includes an elastic member 750, one end of the elastic member 750 may be connected to the second attaching platform 400, and the other end of the elastic member 750 may be connected to the apparatus bracket 100. In this aspect, the elastic member 750 can apply an elastic force to the second bonding stage 400 and the apparatus bracket 100, so that a gap between each component can be eliminated, thereby further improving the rotational accuracy of the second bonding stage 400.

In another alternative embodiment, when the device holder 100 includes the holder body 110 and the sliding platform 120 described above, the elastic member 750 and the adjusting member 740 are both disposed on the sliding platform 120.

In the above embodiment, the first bonding platform 300 and the second bonding platform 400 may be provided with an operating handle, so as to facilitate an operator to operate the first bonding platform 300 and the second bonding platform 400. Of course, the film laminating apparatus is not limited to manual film laminating, and corresponding driving mechanisms may be provided for the first lamination stage 300, the second lamination stage 400, the sliding stage 120, and other components, and the driving mechanisms may be connected to the control system. The control system sends out corresponding control commands, and the corresponding driving system controls the corresponding components to operate so as to realize the automation of the film laminating equipment.

Based on the film laminating equipment disclosed in the embodiment of the application, the embodiment of the application discloses a film laminating method for laminating an optical film, the disclosed film laminating method is applied to the film laminating equipment as described above, as shown in fig. 10, and the disclosed detection method comprises the following steps:

s100, the first film to be laminated and the second film to be laminated are respectively adsorbed to the first lamination platform 300 and the second lamination platform 400.

Because the first lamination stage 300 and the second lamination stage 400 need to laminate the two films to be laminated together, the first film to be laminated and the second film to be laminated need to be adsorbed on the opposite surfaces of the first lamination stage 300 and the second lamination stage.

Specifically, the first attaching platform 300 has a first adsorption surface 310, the first to-be-tested membrane is adsorbed to the first adsorption surface 310, the second attaching platform 400 has a second adsorption surface 410, and the second to-be-attached membrane is adsorbed to the second adsorption surface 410. In the bonding operation, the first suction surface 310 and the second suction surface 410 are disposed opposite to each other.

S200, detecting the optical parameters of the optical film by the optical measuring device 200, and adjusting the optical parameters of the optical film to preset optical parameters.

The optical parameters refer to the optical parameters of the first to-be-laminated film and the second to-be-laminated film after being overlapped. The light emitted by the light source 210 can pass through the first to-be-laminated membrane and the second to-be-laminated membrane adsorbed on the first lamination platform 300 and the second lamination platform 400, and the measuring mechanism 220 receives the light passing through the first to-be-laminated membrane and the second to-be-laminated membrane, so that the optical parameters of the first to-be-laminated membrane and the second to-be-laminated membrane after lamination can be measured. The light parameter may be an optical parameter such as ellipsometry, refractive index, optical axis angle, etc., and of course, may be other optical parameters, which are not limited herein.

And S300, driving the first lamination platform 300 and the second lamination platform 400 to laminate with each other under the condition that the optical parameters of the optical film are preset optical parameters, so that the first film to be laminated and the second film to be laminated are laminated.

The different connection modes of the first bonding platform 300 and the second bonding platform 400 are different in bonding mode, and two different bonding modes are disclosed hereinabove, which are not described herein.

In the embodiment of the application disclosed, the film laminating equipment can measure the optical parameters of the film to be laminated, and can adjust the position of the film to be laminated simultaneously so as to adjust the optical parameters of the optical film, thereby improving the alignment laminating precision of the optical film, further reducing the laminating angle error of the optical film and promoting the optical film to have better optical performance.

In addition, in the scheme disclosed by the application, the optical performance of the product is effectively controlled before the films to be laminated are combined into the optical film, so that the optical performance and effect of the product are guaranteed, the quality control of the product before generation is realized, and the yield of the product is greatly prompted.

In addition, the laminating equipment disclosed by the application does not limit the size of the membrane material and the type of the membrane material, so that the laminating equipment can be compatible with multiple types of membrane materials and multiple sizes of membrane materials. Therefore, the film sticking equipment disclosed by the application has better compatibility.

In another alternative embodiment, before S100, the method may further include:

s400, calibrating the optical path of the optical measurement device 200.

Before the optical film is attached, firstly, the optical path of the optical measurement device 200 is calibrated, the detection calibration piece 500 is placed between the light source 210 and the measurement mechanism 220, so that the light emitted by the light source 210 passes through the detection calibration piece 500 and then enters the measurement mechanism 220, and then the optical measurement device 200 is in an optimal state by adjusting the relative positions of the light source 210, the measurement mechanism 220 and the detection calibration piece 500. Then, the film pasting operation is carried out.

In this embodiment, the optical path of the optical measurement device 200 is calibrated by the detection calibration piece 500, so that the alignment and lamination accuracy of the optical film can be further improved, and the optical performance of the optical film can be further improved.

In a specific scheme, when the lamination operation of the polarizer and the phase difference film is performed, the first film to be laminated can be the polarizer, and the second film to be laminated can be the phase difference film. One of the first calibration film 510 and the second calibration film 520 may be a linear polarizer, and the other may be a circular polarizer.

In a specific process of attaching the polarizer and the phase difference mold, the optical path of the optical measurement device 200 is first calibrated through the linear polarizer and the circular polarizer. Then, the first attaching platform 300 is turned over so that the first adsorption surface 310 faces upward, the polarizer is adsorbed on the first adsorption surface 310, and the phase difference film is adsorbed on the second adsorption surface 410. The first bonding stage 300 is then turned over to a position opposite to the second bonding stage 400, where the first bonding stage 300 may be parallel to the second bonding stage 400 or may have a certain angle, which is not limited herein.

And then, measuring the ellipsometry after the polarizer and the phase difference film are overlapped by the optical measuring device 200, and adjusting the ellipsometry after the polarizer and the phase difference film are overlapped to be within a preset ellipsometry range. Then, the first lamination platform 300 is pressed down, the first lamination platform 300 rotates, one end of the first lamination platform 300, deviating from the first rotating piece 610, is contacted with the second lamination platform 400, so that the first membrane to be laminated and the first end of the second membrane to be laminated are laminated together, then the sliding platform 120 is driven to move in the direction deviating from the first rotating piece 610, the first membrane to be laminated and the second membrane to be laminated are applied with pressure by the in-process lamination roller 730, and the first membrane to be laminated and the second membrane to be laminated are pressed by the lamination roller 730 from the first end of the first membrane to be laminated and the second end of the second membrane to be laminated, so that the first membrane to be laminated and the second membrane to be laminated are laminated.

The foregoing embodiments of the present invention mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in view of brevity of line text, no further description is provided herein.

The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.

Claims (13)

1. A film laminating apparatus for laminating an optical film, characterized in that the film laminating apparatus comprises an apparatus bracket (100), an optical measurement device (200), a first lamination stage (300) and a second lamination stage (400);

at least one of the first attaching platform (300) and the second attaching platform (400) is movably arranged on the equipment bracket (100), the first attaching platform (300) is used for adsorbing a first to-be-attached membrane of the optical membrane, the second attaching platform (400) is used for adsorbing a second to-be-attached membrane of the optical membrane, and the first attaching platform (300) and the second attaching platform (400) can be oppositely arranged;

the optical measuring device (200) is used for detecting optical parameters of the optical membrane; the optical measurement device (200) comprises a light source (210) and a measurement mechanism (220), the first lamination platform (300) and the second lamination platform (400) are respectively positioned between the light source (210) and the measurement mechanism (220), and light rays emitted by the light source (210) sequentially pass through the first to-be-laminated film and the second to-be-laminated film and are then received by the measurement mechanism (220);

the first attaching platform (300) and the second attaching platform (400) can move relatively, and can be used for adjusting the relative positions of the first to-be-attached membrane and the second to-be-attached membrane so as to adjust the optical parameters of the optical membrane to preset optical parameters;

Under the condition that the optical parameters of the optical membrane are the preset optical parameters, the first bonding platform (300) and the second bonding platform (400) are bonded with each other, so that the first membrane to be bonded and the second membrane to be bonded are bonded with each other.

2. The film laminating apparatus according to claim 1, wherein said measuring mechanism (220) comprises a light measuring instrument (221) and a terminal device (222), said first laminating platform (300) and said second laminating platform (400) are respectively located between said light source (210) and said light measuring instrument (221), said light source (210) is opposite to said light measuring instrument (221) and coaxially arranged, and said light measuring instrument (221) is configured to receive light emitted by said light source (210); the terminal device (222) is electrically connected with the light measuring instrument (221) and is used for processing and displaying optical parameters detected by the light measuring instrument (221).

3. The film laminating apparatus according to claim 1, further comprising a detection calibration member (500), wherein the detection calibration member (500) is disposed between the light source (210) and the measuring mechanism (220), and light emitted by the light source (210) passes through the detection calibration member (500) and then enters the measuring mechanism (220), and the detection calibration member (500) is used for calibrating an optical path of the optical measuring device (200).

4. A film laminating apparatus according to claim 3, wherein said detection and calibration member (500) comprises a first calibration film (510) and a second calibration film (520), said first calibration film (510) and said second calibration film (520) being disposed opposite each other.

5. The film laminating apparatus according to claim 1, wherein said first lamination stage (300) is provided with a first light-transmitting region (320), said second lamination stage (400) is provided with a second light-transmitting region (420), said first light-transmitting region (320) is disposed opposite to said second light-transmitting region (420), and said light source (210) and said measuring mechanism (220) are disposed opposite to said first light-transmitting region (320) and said second light-transmitting region (420).

6. The film laminating apparatus according to claim 1, further comprising a vacuum pump, wherein said first lamination stage (300) is provided with a first vent hole (330), said first vent hole (330) being in communication with said vacuum pump; the second attaching platform (400) is provided with a second ventilation hole (430), and the second ventilation hole (430) is communicated with the vacuum pump.

7. The film laminating apparatus according to claim 1, wherein one end of said first lamination stage (300) is rotatably connected to said apparatus bracket (100) via a first rotation member (610), and said first lamination stage (300) is rotated about a first rotation axis; the second laminating platform (400) through second rotating piece (620) with equipment support (100) rotates to be connected, second laminating platform (400) is rotated around second axis of rotation, second axis of rotation perpendicular to second laminating platform (400), first axis of rotation with second axis of rotation looks perpendicular, at least part of second laminating platform (400) can be located equipment support (100) with between first laminating platform (300).

8. The film laminating apparatus according to claim 7, wherein said apparatus frame (100) includes a frame main body (110) and a slide table (120), said first attaching table (300) is connected to said frame main body (110) through said first rotating member (610), said slide table (120) is slidably connected to said frame main body (110) in a first direction, said slide table (120) is disposed between said second rotating member (620) and said frame main body (110), and said second attaching table (400) is rotatably connected to said slide table (120) through said second rotating member (620); the first direction intersects the first rotation axis and is perpendicular to the second rotation axis.

9. The film laminating apparatus according to claim 8, wherein said holder main body (110) is provided with a first stopper (710) and a second stopper (720), said slide platform (120) is located between said first stopper (710) and said second stopper (720), and said first stopper (710) and said second stopper (720) are in a stopper fit with said slide platform (120) in said first direction.

10. The film laminating apparatus according to claim 8, further comprising an attaching roller (730), wherein the attaching roller (730) is disposed at an end of the first laminating platform (300) facing away from the first rotating member (610), and the attaching roller (730) is configured to roll the first film to be laminated and the second film to be laminated.

11. The film laminating apparatus according to claim 7, further comprising an adjusting member (740) and an elastic member (750), wherein the adjusting member (740) is disposed on the apparatus support (100), the adjusting member (740) is connected to the second laminating platform (400), and the adjusting member (740) is configured to adjust a relative position of the second laminating platform (400) and the first laminating platform (300) so as to adjust an optical parameter of the optical film; one end of the elastic piece (750) is connected with the second attaching platform (400), and the other end of the elastic piece (750) is connected with the equipment support (100).

12. A film-sticking method for sticking an optical film, characterized in that the film-sticking method is applied to the film-sticking apparatus according to any one of claims 1 to 11, the film-sticking method comprising:

adsorbing a first to-be-laminated membrane and a second to-be-laminated membrane to a first lamination platform (300) and a second lamination platform (400) respectively;

detecting optical parameters of the optical membrane by the optical measuring device (200) and adjusting the optical parameters of the optical membrane to preset optical parameters;

and under the condition that the optical parameters of the optical membrane are the preset optical parameters, driving the first bonding platform (300) and the second bonding platform (400) to bond with each other so that the first membrane to be bonded and the second membrane to be bonded are bonded with each other.

13. The film laminating method according to claim 12, further comprising, before the step of adsorbing the first film to be laminated and the second film to be laminated to the first lamination stage (300) and the second lamination stage (400), respectively:

the optical path of the optical measuring device (200) is calibrated.

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