Special-shaped multi-round-hole OGS (one glass solution) optical film pasting method

Abstract

The invention discloses a method for pasting an optical film on a special-shaped multi-round-hole OGS (one glass solution). The method comprises the following steps: preparing OGS glass with a plurality of first through holes and an uncut optical film; aligning and laminating the periphery of the OGS glass and the periphery of the uncut optical film; the surface of the optical film of the OGS glass attached with the uncut optical film faces upwards and is placed on laser equipment, the laser equipment carries out laser punching and trimming on the surface of the optical film corresponding to the positions of the first through holes in the OGS glass to form second through holes concentrically corresponding to the first through holes, and the peripheral size of the second through holes is larger than that of the first through holes. According to the invention, after the unpunched optical film and the OGS glass are laminated, laser punching and trimming are carried out on the surface of the optical film corresponding to the position of the first through hole in the OGS glass to form the second through hole in the optical film, so that the laminating precision of the corresponding through holes of the optical film and the OGS glass and the peripheral laminating precision of the optical film and the OGS glass can better meet the requirements of customers; and poor lamination is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of an OGS optical film pasting method, in particular to an optical film pasting method for an OGS with special-shaped multiple circular holes. Background Art

[0002] With the increase in the number of intelligent cars, consumers have higher requirements for intuitive appearance. Similarly, car manufacturers have higher and higher quality control on TP dimensional accuracy. In the TP production process, the bonding of OGS glass and optical film is an important process that affects the appearance and display effect of the product, and the bonding accuracy of the corresponding holes on these two materials is very high. In the existing process, the incoming materials of these two materials, OGS glass and optical film, are preset with corresponding holes. However, since the accuracy of the three holes of the optical film and the three holes of the OGS glass need to be controlled, it is necessary to ensure that the accuracy of each hole of the film and the glass is within the same tolerance range during the production process. For example, if the film accuracy is biased towards the upper limit, the OGS glass accuracy must also be biased towards the upper limit to ensure that the overall accuracy is within the guaranteed range when the film and glass are bonded. In this way, the accuracy control requirements for punching materials from two different suppliers are relatively high. If the hole accuracy of one material is biased towards the upper limit and the hole accuracy of the other material is biased towards the lower limit, the possibility of bias when the two materials are bonded is very high. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for laminating an optical film with a special-shaped multi-circular hole OGS by using an uncut optical film, laminating it with OGS and then performing laser drilling and trimming, thereby reducing the control requirements and costs for the drilling accuracy of the incoming optical film material, avoiding the situation where drilling holes in both materials makes it difficult to control the lamination accuracy, and improving the lamination yield.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A method for attaching an optical film to a special-shaped multi-circular hole OGS includes the following steps:

[0006] Step 1: prepare OGS glass and an optical film, wherein the OGS glass includes a viewing area and a non-viewing area, the non-viewing area is provided with a plurality of first through holes, and the optical film is not cut with holes;

[0007] Step 2: Align and bond the periphery of the OGS glass and the periphery of the optical film without a hole cut therein, so that the first through hole is covered by the optical film without a hole cut therein after bonding;

[0008] Step 3: Place the OGS glass that has been bonded to the optical film without holes cut on a laser device with the optical film surface facing upward, and perform laser drilling and trimming on the surface of the optical film corresponding to the positions of the first through holes on the OGS glass, so that second through holes that are concentric with the first through holes on the OGS glass are formed on the optical film, and the outer size of the second through hole is larger than that of the first through hole.

[0009] Furthermore, in the first step, the outer dimension of the optical film without holes cut is 0.3 mm-0.7 mm smaller than the outer dimension of the OGS glass.

[0010] Preferably, in the second step, the periphery of the OGS glass and the uncut optical film are aligned and bonded by CCD capture.

[0011] Preferably, in the third step, the laser device uses a CCD to capture the position of the first through hole on the OGS glass and then performs laser drilling and trimming on the surface of the optical film accordingly.

[0012] Further, the first through holes include A1 through holes, B1 through holes, and C1 through holes, the second through holes include A2 through holes, B2 through holes, and C2 through holes, the A1 through holes are concentric with the A2 through holes, the B1 through holes are concentric with the B2 through holes, and the C1 through holes are concentric with the C2 through holes.

[0013] Furthermore, the periphery of the A2 through hole is 0.3mm-0.7mm larger than the periphery of the A1 through hole, and the periphery of the B2 through hole is 0.3mm-0.7mm larger than the periphery of the B1 through hole.

[0014] Furthermore, the periphery of the C2 through hole is 0.15 mm-0.35 mm larger than the periphery of the C1 through hole.

[0015] Preferably, the optical film is a transparent PET optical film.

[0016] Furthermore, a touch circuit is arranged on the surface of the OGS glass that is bonded to the optical film.

[0017] Furthermore, a semi-transparent touch pattern is silk-screened on the surface of the OGS glass that is bonded to the optical film.

[0018] The method for attaching an optical film to a special-shaped multi-circular hole OGS of the present invention uses an optical film without holes cut and an OGS glass to bond, and then laser drilling and trimming are performed on the optical film surface corresponding to the position of the first through hole on the OGS glass to form a second through hole on the optical film. In this way, the overall accuracy of bonding between the optical film and the OGS glass is easily controlled within a guaranteed range, so there is no need to position and bond the second through hole of the optical film with the first through hole on the OGS glass during the bonding process as in the prior art, so that the bonding accuracy of the corresponding through holes of the optical film and the OGS glass and the peripheral bonding accuracy of the two materials can better meet customer requirements, reducing repeated rework, customer complaints and claims caused by poor bonding. At the same time, the method for attaching an optical film to a special-shaped multi-circular hole OGS of the present invention changes the existing method of pre-drilling of incoming optical film materials. The optical film does not need to be pre-drilled, which reduces the accuracy control requirements for material drilling of optical film suppliers, reduces material costs and reduces incoming material quality inspection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a flowchart of the steps of the method for attaching optical film to the special-shaped multi-circular hole OGS of the present invention;

[0021] Figure 2 This is a schematic diagram of the OGS glass of the present invention;

[0022] Figure 3 This is a schematic diagram of an optical film without holes cut in the present invention;

[0023] Figure 4 Schematic diagram of bonding the OGS glass and the optical film without holes cut in the present invention;

[0024] Figure 5 Schematic diagram of OGS glass with an optical film after laser drilling according to the present invention. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0026] It should be noted that when an element is referred to as being "attached to" another element, it may be directly on the other element or there may be an element in the middle. The terms "first", "second", "outer", "inner" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] See also Figures 1 to 5 An embodiment of a method for attaching an optical film to a special-shaped multi-circular hole OGS, the method comprising the following steps:

[0029] Step 1: prepare an OGS glass 1 and an optical film 2, wherein the OGS glass 1 includes a viewing area 11 and a non-viewing area 12, wherein the non-viewing area 12 is provided with a plurality of first through holes, and the optical film 2 is not cut with holes;

[0030] Step 2: Align and bond the periphery of the OGS glass 1 and the periphery of the optical film 2 without a hole cut therein, so that the first through hole is covered by the optical film 2 without a hole cut therein after bonding;

[0031] Step 3: Place the OGS glass 1 with the un-perforated optical film 2 attached onto the laser device with the optical film 2 facing upwards. The laser device performs laser drilling and trimming on the surface of the optical film 2 corresponding to the positions of the first through holes on the OGS glass 1, thereby forming second through holes on the optical film 2 that are concentric with the first through holes on the OGS glass 1, and the outer dimensions of the second through holes are larger than those of the first through holes.

[0032] In this embodiment, an uncut optical film 2 is bonded to an OGS glass 1, and then laser drilling and trimming are performed on the surface of the optical film 2 corresponding to the position of the first through hole on the OGS glass 1 to form a second through hole on the optical film 2. In this way, the overall bonding accuracy of the optical film 2 and the OGS glass 1 can be easily controlled within a guaranteed range, so there is no need to position and bond the second through hole of the optical film 2 to the first through hole on the OGS glass 1 during the bonding process as in the prior art, so that the bonding accuracy of the corresponding through holes of the optical film 2 and the OGS glass 1 and the peripheral bonding accuracy of the two materials can better meet customer requirements, reduce repeated rework, customer complaints and claims caused by poor bonding, and at the same time, the method for bonding optical films with special-shaped multi-circular holes OGS of the present invention changes the existing method of pre-punching incoming optical films 2. The optical film 2 does not need to be pre-punched, which reduces the accuracy control requirements for material drilling of optical film suppliers, reduces material costs and reduces the cost of quality inspection of incoming materials.

[0033] The outer dimensions of the uncut optical film 2 prepared in the first step of the above method are 0.3 mm to 0.7 mm smaller than the outer dimensions of the OGS glass 1.

[0034] Based on precision considerations, industrial vision is used to take photos during the bonding process of the OGS glass 1 and the optical film 2 and the laser drilling process of the optical film 2. Specifically, in the second step, the periphery of the OGS glass 1 and the uncut optical film 2 are aligned and bonded using CCD capture. In the third step, the laser equipment uses CCD to capture the position of the first through hole on the OGS glass 1 and then performs laser drilling and trimming on the surface of the optical film 2 accordingly.

[0035] In the specific implementation scheme of this embodiment, the first through hole on the OGS glass 1 refers to Figure 2 , including A1 through hole 121, B1 through hole 122, C1 through hole 123, and the second through hole formed by laser drilling and trimming on the optical film 2 refers to Figure 5 , including A2 through hole 201, B2 through hole 202, and C2 through hole 203, wherein A1 through hole 121 is concentric with A2 through hole 201, B1 through hole 122 is concentric with B2 through hole 202, and C1 through hole 123 is concentric with C2 through hole 203. The periphery of A2 through hole 201 is 0.3mm-0.7mm larger than the periphery of A1 through hole 121, the periphery of B2 through hole 202 is 0.3mm-0.7mm larger than the periphery of B1 through hole 122, and the periphery of C2 through hole 203 is 0.15mm-0.35mm larger than the periphery of C1 through hole 123.

[0036] In touch applications, the holes on the optical film 2 are usually used to transmit touch signals. Expanding the aperture helps optimize the transmission of touch signals and improve the sensitivity and accuracy of touch. Precisely controlling the expansion accuracy of the size can ensure the consistency and stability of the product, reduce quality problems caused by dimensional deviations, improve the overall performance and reliability of the product, meet customer expectations and needs, reduce rework and scrap rates in the production process, and reduce production costs and time costs.

[0037] In a specific implementation scheme of the present embodiment, the A1 and B1 through holes 121 and 122 are of the same size and are disposed on the left and right sides of the non-visual area of ​​the OGS glass 1, respectively corresponding to virtual button areas such as volume and frequency modulation. The C1 through hole 123 is smaller than the A1, B1121 and 122 through holes and is disposed at the upper right side of the non-visual area of ​​the OGS glass as a sensing channel.

[0038] Preferably, the optical film 2 is a transparent PET optical film, which has high light transmittance, allowing light to smoothly penetrate the film to ensure image clarity and brightness, and the PET optical film has good adhesion and can be firmly bonded to the OGS glass.

[0039] In a specific implementation of the first embodiment of the present invention, a touch circuit is arranged on the surface of the OGS glass 1 bonded to the optical film 2. Specifically, a semi-transparent touch pattern 13 may be screen-printed on the surface of the OGS glass 1 bonded to the optical film 2. When the user touches these areas, the touch circuit senses the touch operation and converts it into a corresponding electrical signal for transmission and processing.

[0040] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for attaching an optical film to a special-shaped multi-circular hole OGS, characterized in that: The method comprises the following steps: Step 1: prepare a piece of OGS glass and an optical film, wherein the OGS glass comprises a viewing area and a non-viewing area, the non-viewing area is provided with a plurality of first through holes, and the optical film has no holes cut therein; Step 2: Align and bond the periphery of the OGS glass and the periphery of the optical film without a hole cut therein, so that the first through hole is covered by the optical film without a hole cut therein after bonding; Step 3: Place the OGS glass that has been bonded to the optical film without holes cut on a laser device with the optical film surface facing upward, and perform laser drilling and trimming on the surface of the optical film corresponding to the positions of the first through holes on the OGS glass, so that second through holes that are concentric with the first through holes on the OGS glass are formed on the optical film, and the outer size of the second through hole is larger than that of the first through hole.

2. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 1, characterized in that: In the first step, the outer dimension of the optical film without holes cut is 0.3mm-0.7mm smaller than the outer dimension of the OGS glass.

3. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 2, characterized in that: In the second step, the periphery of the OGS glass and the uncut optical film are aligned and bonded by CCD capture.

4. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 1, characterized in that: In the third step, the laser device uses CCD to capture the position of the first through hole on the OGS glass and then performs laser drilling and trimming on the surface of the optical film accordingly.

5. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 1, characterized in that: The first through holes include A1 through holes, B1 through holes, and C1 through holes, and the second through holes include A2 through holes, B2 through holes, and C2 through holes. The A1 through holes are concentric with the A2 through holes, the B1 through holes are concentric with the B2 through holes, and the C1 through holes are concentric with the C2 through holes.

6. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 5, characterized in that: The periphery of the A2 through hole is 0.3mm-0.7mm larger than that of the A1 through hole, and the periphery of the B2 through hole is 0.3mm-0.7mm larger than that of the B1 through hole.

7. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 6, characterized in that: The periphery of the C2 through hole is 0.15 mm to 0.35 mm larger than the periphery of the C1 through hole.

8. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 1, characterized in that: The optical film is a transparent PET optical film.

9. The method for attaching an optical film of a special-shaped multi-circular hole OGS according to claim 1, characterized in that: A touch circuit is arranged on the surface of the OGS glass attached to the optical film.

10. The method for attaching an optical film to a special-shaped multi-circular hole OGS according to claim 9, characterized in that: A semi-transparent touch pattern is silk-screened on the surface of the OGS glass attached to the optical film.

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