Semi-automatic laminating device and process for optical film adhesive

Abstract

The present invention discloses a semi-automatic bonding device and process for optical film adhesive, comprising a bottom plate, an inner groove, an outer groove, adhesive, an arc stopper and an optical film frame. The bottom plate is provided with an inner groove and an outer groove, both of which are annular structures, the inner groove is a groove formed by the bottom of the outer groove being depressed downward, the adhesive is annular strip, the adhesive is arranged in the inner groove, the height of the adhesive is higher than the depth of the inner groove and lower than the depth of the outer groove, the arc stopper is arranged outside the four corners of the outer groove on the bottom plate, the optical film frame is installed in the outer groove, and the bottom of the optical film frame is bonded with the top of the adhesive. The advantages of the present invention are: reducing the possibility of producing optical films by manual bonding; expanding the types of products that can be produced, improving the utilization rate of optical films, and reducing production costs.

Description

Technical Field

[0001] The invention relates to the technical field of mask manufacturing, and in particular to a semi-automatic laminating device and process for optical film adhesive. Background Art

[0002] The mask is also called a photomask. It is made of quartz glass as the substrate. First, a layer of metal chromium is plated on the quartz glass substrate, and then a photoresist (also known as photoresist, a photosensitive material whose chemical properties change under the irradiation of light of a specific wavelength) is coated on the chromium layer. The designed circuit pattern is exposed to the photoresist through an electronic laser device. The exposed area is developed by the photoresist and the chromium layer is etched to form a pattern that is consistent with the design. Figure 1 The same circuit pattern is formed, thus becoming a photomask master similar to the exposed film. In recent years, the domestic LCD panel industry has developed rapidly, from small and medium-sized 4.5 generations to G8.5, G11 and other high generations, from ordinary a-SiTFT to flexible AMOLED, various new display panel products have emerged in an endless stream, and the continuous innovation of the panel industry has also driven the development of the photomask industry.

[0003] At present, the production of flat panel display masks is mainly concentrated in 4.5, 6, 8.5 and 10 generations. Its types can be divided into masks for CF (color filter) and masks for TFT-Array (thin film transistor array). The manufacturing process includes photolithography, development, etching, stripping, inspection, repair, cleaning, film pasting, etc. A layer of optical film (English name Pellicle) with high transmittance needs to be attached to its surface to block dust and particles. The optical film is also called a dust cover. The mask needs to be inspected and cleaned regularly during use. Since the above-mentioned TFT-Array mask is attached with an optical film, the optical film must be pried off and then cleaned. After cleaning, a new optical film must be re-attached to meet the product use requirements. Improper operation by personnel or abnormalities such as particles appear on the inner surface of the film and the surface of the mask after film pasting will lead to film pasting failure. Once the film pasting fails, the adhesive on the frame of the optical film is easily deformed or damaged by external force, so that the optical film can only be pasted once in actual production and cannot be reused. In addition, if the mask has a Haze problem and must be pried and cleaned, this will also cause the optical film to be scrapped. At present, the production and manufacturing of optical films are mainly monopolized by Japanese and Korean companies, so the price of each optical film is very expensive, especially for the two large-size mask optical films G8.5 and G11. Failure to apply the film or pry the film for cleaning will cause serious economic losses.

[0004] Therefore, in the case where the optical film is intact but the bonding adhesive cannot be reused, in order to reduce the product manufacturing cost and achieve the repeatable bonding of the mask optical film, the purpose is to provide a device for improving the reuse rate of the mask optical film and a process method for re-bonding the mask optical film. Summary of the invention

[0005] The present invention aims to provide a device for improving the reuse rate of a mask optical film and a process method for re-bonding the mask optical film.

[0006] The present invention is achieved through the following technical solutions:

[0007] A semi-automatic bonding device for an optical film adhesive comprises a base plate, an inner groove, an outer groove, adhesive, an arc stopper and an optical film frame, wherein the inner groove and the outer groove are arranged on the base plate, both of which are annular structures, the inner groove is a groove formed by a downward depression at the bottom of the outer groove, the adhesive is annular strip, the adhesive is arranged in the inner groove, the height of the adhesive is higher than the depth of the inner groove and lower than the depth of the outer groove, the arc stopper is arranged on the outside of the four corners of the outer groove on the base plate, the optical film frame is installed in the outer groove, the width of the optical film frame is consistent with the width of the outer groove, and the bottom of the optical film frame is bonded with the top of the adhesive.

[0008] In the prior art, after manual film pasting, particles and other abnormalities appear on the inner surface of the film and the surface of the mask, and improper operation by personnel often leads to film pasting failure.

[0009] The present invention adds an annular groove, an arc stopper and a positioning cylinder. Multiple groups of "return"-shaped grooves of different sizes are milled on the front and back of the acrylic plate, and each group of grooves is divided into an inner groove (for adhesive) and an outer groove (for optical film frame). The sizes of the inner groove and the outer groove are customized according to the sizes of the adhesive and the optical film frame, respectively. They can accurately fix the fitting position of the adhesive and the frame; the arc stopper can further control the fitting position of the frame and the adhesive by matching the groove; and the positioning cylinder can locate the placement position of the entire fixture. In summary, this device design structure achieves the effect of fitting the mask optical film frame and the adhesive through the combination of the "return"-shaped groove, the arc stopper and the positioning cylinder.

[0010] The shape of the adhesive in the present invention is die-cut into an overall "U"-shaped double-sided adhesive tape, which can fit into an inner groove of a corresponding size on a glue sticking jig. The "U"-shaped double-sided adhesive tape only needs to be embedded in the inner groove of a corresponding size of the glue sticking jig to complete the fixation, and the operation is simple and flexible. At the same time, after the overall "U"-shaped double-sided adhesive tape and the optical film are bonded, no interface, gap, etc. are generated, which not only effectively improves the viscosity between the two, but also prevents particles in the environment from entering the interior of the optical film to the greatest extent, thereby greatly improving product quality.

[0011] Furthermore, it also includes positioning cylinders, which are arranged at the four corners of the bottom plate;

[0012] The positioning cylinder can locate the placement of the entire fixture.

[0013] Furthermore, the bottom plate has inner grooves and outer grooves on the front side or the back side or both sides;

[0014] The front side of the bottom plate is provided with 2 annular grooves, and the back side is provided with 3 annular grooves.

[0015] Further, the width of the outer groove is consistent with the width of the optical film frame;

[0016] The consistent width allows the optical film frame and the adhesive to be precisely aligned, thereby achieving the fit between the two and achieving the purpose of repeatable lamination of the mask optical film.

[0017] Furthermore, the arc stopper is an L-shaped structure;

[0018] The groove is matched with a corresponding arc stopper to control the fitting position of the frame and the adhesive.

[0019] Further, the connection between the two side walls of the arc stopper is arc-shaped;

[0020] Further, the width of the adhesive is smaller than the width of the inner groove;

[0021] The width of the adhesive is smaller than the width of the inner groove so that the adhesive can be better fitted and installed.

[0022] Furthermore, the base plate is made of acrylic material;

[0023] The acrylic material has good transparency, chemical stability and weather resistance, is easy to dye, easy to process, and has a beautiful appearance.

[0024] A semi-automatic laminating device and process for optical film adhesive is implemented, comprising the following steps:

[0025] S1: Fix the glue-bonding jig and precisely fix the jig on the optical platform at an angle of 60° upward to complete the visual positioning and bonding;

[0026] S2: Fixing the adhesive by embedding the adhesive into an inner groove of a corresponding size of the adhesive sticking jig;

[0027] S3: AGV grabs the optical film frame, and uses the AGV's mechanical arm to grab the upper and lower sides of the optical film frame;

[0028] S4: Tear off the release film, and tear off the release film on the adhesive;

[0029] S5: Mechanical visual inspection;

[0030] S6: After accurate alignment, the optical film and adhesive are bonded and visually inspected;

[0031] S7: AOI detects defects and determines whether it is qualified;

[0032] S8: Ion wind blowing to clean impurities;

[0033] S9: AOI inspection, as long as it meets the standards.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] 1 . The semi-automatic bonding device of an optical film adhesive of the present invention can realize the bonding of optical film frames and adhesives of masks of all sizes of G11 (1620mm*1780mm*17mm) and below on the same substrate.

[0036] 2. The present invention is a semi-automatic bonding device for optical film adhesive, the main structure of which mainly includes a "return"-shaped groove, an arc stopper and a positioning cylinder. The combination of the three can ensure the precise bonding of the optical film frame and the adhesive, which not only reduces the possibility of manual bonding to produce optical films, but also improves product accuracy.

[0037] 3. The semi-automatic bonding device of the optical film adhesive of the present invention realizes the bonding function of optical film frames and adhesives of masks of different sizes, has a simple and safe structure, is convenient and efficient in operation, expands the types of products that can be produced, improves the utilization rate of optical films, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0039] Figure 1 It is a schematic diagram of the structure of the bonding fixture device.

[0040] Figure 2 Schematic diagram of positioning cylinder and arc stopper.

[0041] Figure 3 Schematic diagram of the structure of the optical film and the fixture.

[0042] Figure 4 This is a flow chart of the third embodiment of the present invention.

[0043] Figure 5 This is a flow chart of a fourth embodiment of the present invention.

[0044] Figure 6 This is a flow chart of a fifth embodiment of the present invention.

[0045] Figure 7 This is a flow chart of the sixth embodiment of the present invention.

[0046] 1-bottom plate, 2-inner groove, 3-outer groove, 4-adhesive, 5-positioning cylinder, 6-arc stopper, 7-optical film frame DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0048] Example 1

[0049] like Figure 1-7 As shown, the present invention is a semi-automatic bonding device for an optical film adhesive, comprising a base plate 1, and also comprising an inner groove 2, an outer groove 3, adhesive 4, an arc stopper 6 and an optical film frame 7. The inner groove 2 and the outer groove 3 are arranged on the base plate 1, and the inner groove 2 and the outer groove 3 are both annular structures. The inner groove 2 is a groove formed by the bottom of the outer groove 3 being depressed downward, the adhesive 4 is an annular strip, the adhesive 4 is arranged in the inner groove 2, the height of the adhesive 4 is higher than the depth of the inner groove 2 and lower than the depth of the outer groove 3, the arc stopper 6 is arranged on the outside of the four corners of the outer groove 3 on the base plate 1, the optical film frame 7 is installed in the outer groove 3, and the bottom of the optical film frame 7 is bonded with the top of the adhesive 4.

[0050] Example 2

[0051] like Figure 1-7 As shown, this embodiment is based on embodiment 1, and further includes a positioning cylinder 5, and the positioning cylinder 5 is arranged on the four corners of the base plate 1; the front or back side or both sides of the base plate 1 have an inner groove 2 and an outer groove 3; the width of the outer groove 3 is consistent with the width of the optical film frame 7; the arc stopper 6 is an L-shaped structure, and the connection between the two side walls of the arc stopper 6 is arc-shaped; the width of the adhesive 4 is smaller than the width of the inner groove 2; the base plate 1 is made of acrylic material.

[0052] Example 3

[0053] like Figure 1-7 As shown, this embodiment is based on Embodiments 1 and 2 to implement a process of a semi-automatic bonding device for optical film adhesive, including the following steps:

[0054] S1: Fixing the glue sticking jig, the jig is precisely fixed on an optical platform inclined upward at 60°. The glue sticking jig in this step has outer grooves 3 and inner grooves 2 of different sizes processed on its upper surface. It contains the sizes of optical film and adhesive 4 for G4.5-G10 mask plates, which can match the fitting of optical film frame 7 and adhesive 4. At the same time, the upper surface of the fitting jig is designed with positioning cylinders 5 and arc blocks 6 for positioning, through which AGV can complete mechanical vision positioning and fitting.

[0055] S2: The adhesive 4 is fixed by embedding the adhesive 4 in the inner groove 2 of the corresponding size of the adhesive laminating jig; the adhesive 4 in this step is die-cut into an integral "U"-shaped double-sided adhesive tape, the size of which matches the size of the optical film frame 7 to be laminated, and it has two layers of release film on the upper and lower surfaces. The adhesive can be fixed by embedding the "U"-shaped double-sided adhesive tape in the inner groove 2 of the corresponding size of the adhesive laminating jig, and the operation is simple and flexible.

[0056] S3: AGV grabs the optical film frame 7, and uses the mechanical arm of the small AGV to grab the upper and lower sides of the optical film frame 7; in this step, the optical film film is well preserved, but the original adhesive 4 is damaged and cleaned, creating conditions for the bonding of the optical film and the adhesive 4.

[0057] S4: tear off the release film, and tear off the release film on the upper layer of the adhesive; further, the adhesive 4 is still fixed on the adhesive sticking jig, and the upper layer of the adhesive 4 is in a condition to be stuck to the optical film frame 7.

[0058] S5: Mechanical vision inspection, using the CCD positioning system of the AGV, and then judging the bonding position of the optical film frame 7 and the adhesive 4 based on the positioning cylinder 5 and the arc stopper 6 on the bonding fixture, and continuously adjusting the direction of the robot arm through the CCD positioning system until the grasped optical film frame 7 and the corresponding adhesive 4 on the optical platform are accurately aligned.

[0059] S6: After accurate alignment, the optical film frame 7 and the adhesive 4 are bonded together; in this step, the adhesive 4 on the optical platform is fixed, and the optical film is grasped by a mechanical arm to complete the bonding, which can effectively prevent particles caused by the bonding process from falling on the optical film.

[0060] S7: Visual inspection, check the integrity of the optical film after adhesive bonding and the bonding effect of the adhesive; this step is mainly to conduct preliminary screening of the optical film after bonding to prevent unqualified optical films from entering the optical inspection stage and reduce unnecessary processes.

[0061] S8: AOI inspection, to detect the number of particles on the surface of the optical film and defects that are invisible to the naked eye; this step takes into account the existence of manual judgment errors. In order to ensure that unqualified optical films do not enter the product film lamination process, AOI is used for further screening.

[0062] S9: Optical films that pass the inspection can be sealed or used.

[0063] Example 4

[0064] like Figure 1-7 As shown, this embodiment is based on Embodiments 1, 2 and 3, and is different from Embodiment 3 in that:

[0065] S1: After the optical film frame 7 and the adhesive 4 are bonded, they are visually inspected. The optical films that pass the inspection enter the AOI inspection stage, and the optical films that fail the inspection are processed according to the situation.

[0066] S2: If the optical film is found to be damaged under visual inspection, the optical film shall be directly scrapped;

[0067] S3: If the optical film is found to be intact under visual observation, but the bonding effect of the adhesive 4 is not up to standard, the optical film can be re-bonded by tearing off the adhesive 4.

[0068] Example 5

[0069] like Figure 1-7 As shown, this embodiment is based on embodiments 1, 2, 3 and 4, and is different from embodiment 3 in that:

[0070] S1: After the optical film frame 7 and the adhesive 4 are bonded together, an AOI inspection is performed on them. The optical film that passes the inspection is a qualified product, and the optical film that fails the inspection is processed according to the situation.

[0071] S2: If the optical film is found to have irreparable defects under AOI inspection, the optical film will be directly scrapped;

[0072] S3: If the optical film has no irreparable defects under AOI inspection, but the number and size of particles on the film surface exceed the standard, the particles on the film surface can be cleared by ion wind, so as to achieve the purpose of cleaning the particles on the film surface. Finally, the product standard can be met after passing the AOI inspection.

[0073] Example 6

[0074] like Figure 1-7 As shown, this embodiment is based on embodiments 1, 2, 3, 4 and 5, and is different from embodiment 3 in that: if the optical film is found to have no irreparable defects under AOI inspection, but the number and size of particles on the surface of the film exceed the standard, the particles on the surface of the film can be processed in a cycle of "AOI→ion wind blowing→AOI" process until the optical film meets the product standards and is judged to be qualified.

[0075] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A semi-automatic laminating device for optical film adhesive, comprising a base plate (1), characterized in that: The optical film frame (7) further comprises an inner groove (2), an outer groove (3), an adhesive (4), an arc stopper (6) and an optical film frame (7). The inner groove (2) and the outer groove (3) are arranged on the bottom plate (1). The front side of the bottom plate (1) has the inner groove (2) and the outer groove (3). The inner groove (2) and the outer groove (3) are both annular structures. The inner groove (2) is a groove formed by the bottom of the outer groove (3) being depressed downward. The adhesive (4) is an annular strip. The adhesive (4) is arranged in the inner groove (2). The height of the adhesive (4) is higher than the depth of the inner groove (2) and lower than the depth of the outer groove (3). The arc stopper (6) is arranged on the outer sides of the four corners of the outer groove (3) on the bottom plate (1). The optical film frame (7) is installed in the outer groove (3). The bottom of the optical film frame (7) is in contact with the top of the adhesive (4).

2. The semi-automatic laminating device for optical film adhesive according to claim 1, characterized in that: It also comprises positioning cylinders (5), which are arranged on the four corners of the base plate (1).

3. The semi-automatic laminating device of optical film adhesive according to claim 1, characterized in that: The width of the outer groove (3) is consistent with the width of the optical film frame (7).

4. The semi-automatic laminating device for optical film adhesive according to claim 1, characterized in that: The arc stopper (6) is an L-shaped structure.

5. The semi-automatic laminating device for optical film adhesive according to claim 4, characterized in that: The connection between the two side walls of the circular arc stopper (6) is arc-shaped.

6. The semi-automatic laminating device for optical film adhesive according to claim 1, characterized in that: The width of the adhesive (4) is smaller than the width of the inner groove (2).

7. The semi-automatic laminating device for optical film adhesive according to claim 1, characterized in that: The bottom plate (1) is made of acrylic material.

8. A process for a semi-automatic laminating device for an optical film adhesive according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Fix the adhesive fixture and accurately fix the fixture on the optical platform with an angle of 60° upward; S2: fixing the adhesive (4), wherein the size of the adhesive (4) matches the optical film frame (7); S3: AGV grabs the optical film frame (7); S4: tear off the release film; S5: The optical film is grasped by a robotic arm to complete the bonding.

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