TWI568573B - Forming apparatus for a single piece with double sided coating optical film - Google Patents

Description

Single-sided double-coated optical film forming mechanism

The invention relates to an optical film forming mechanism, in particular to an inventor of an innovative optical film forming mechanism capable of achieving single-sided double-side coating and precise alignment.

According to the conventional optical film (such as the glass substrate surface layer film of the liquid crystal display screen), the composite coating structure is generally manufactured by a roll coating molding mechanism, and the roller coating is integrally formed. The molding mechanism is mainly composed of a plurality of array unit rollers that can roll relative to each other and a glue applying device that supplies a glue.

The roller-type coating forming mechanism described in the preceding paragraph basically has no problem when manufacturing a general single-layer optical film, but since the optical film currently has a complicated composite layer or multiple layers depending on the needs of the application field thereof. A composite structure type occurs, for example, an optical film attached to a liquid crystal display screen is often composed of a multilayer optical base layer, a circuit structure layer (such as nano silver), and a package layer; for such a multilayer composite optical film If the product is manufactured by the above-mentioned conventional roller coating forming mechanism, there are considerable problems and disadvantages; the main reason is that the substrate of the multi-adhesive layer is often applied during the coating process of the simple roller coating forming mechanism. Deformation occurs because the distance drawn by the roller is too long. As a result, the alignment accuracy between the adjacent adhesive layers is often difficult to achieve the desired quality in the industry.

Although, in view of the optical film structure of the multi-layer composite type, there is also a related art method of forming a single optical film structure by using a double-substrate coating layer; however, this method needs to be added In addition to the shortcomings of the amount of substrate and the cost, the double substrate has the same error and high precision, and the alignment accuracy is difficult to meet the ideal quality requirements of the industry, and the manufacturing process is more serious and less efficient. It is an important technical issue that deserves to be considered and improved by the industry.

Therefore, in view of the problems existing in the above-mentioned conventional optical film forming mechanism, how to develop an innovative structure that can be more ideal and practical, and the relevant industry must further consider the goals and directions of breakthrough.

In view of this, the inventor has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the inventor has finally obtained the practical invention.

The main purpose of this creation is to provide a single-sided double-coated optical film forming mechanism, and the technical problem to be solved is aimed at how to develop a new optical film forming mechanism which is more ideal and practical. Think about innovation breakthroughs. The forming mechanism includes a first roller set for introducing an optical film substrate, and the first roller set is assembled with a first glue supply device to supply the glue, so that the first roller set can be applied to the optical film substrate. The first surface is roll formed into a first optical layer.

The technical feature of the present invention is mainly that the molding mechanism further comprises: a press-compositing unit disposed at a rear of the flow of the first roller set, and the press-synthesizing unit includes a pressure in which the upper and lower intervals are arranged. a seat and a stage, wherein the stage is used for the optical film substrate to pass and carry, the press seat can generate a pressing action toward the stage, and the pressing surface of the press seat is provided with a second optical a layer, wherein the second optical layer is pressed against the second surface of the optical film substrate, and the second optical layer is positioned opposite to the first optical layer of the first surface; at least one positioning mark is formed on the first optical layer and When the first roller set is synchronously formed on the first surface of the optical film substrate and located at a set interval position of the first optical layer; at least one positioning sensor is disposed at at least one of the press-fit seats of the press-compositing unit and The positioning sensor is located at a set interval position of the second optical layer, and the positioning sensor detects the position mark set by the sensing optical film substrate to obtain the precise position and time when the pressing seat performs the pressing action; and the positioning sensor, Set the interval between the two patterns for the optical layer, with the positioning system, the same as that set by the interval between the first optical layer patterns.

The main effects and advantages of the present invention are that a two-optical layer capable of accurately aligning can be formed on opposite surfaces of a single optical film substrate, thereby achieving practical improvement in reducing manufacturing cost and greatly improving optical film forming precision, quality and efficiency. Better industrial economic benefits.

Please refer to the first, second, third, and fourth drawings, which are preferred embodiments of the single-sided double-coated optical film forming mechanism of the present invention, but the embodiments are for illustrative purposes only, and are on the patent application. It is not limited by the structure; the molding mechanism A includes a first roller set 10, and the first roller set 10 is introduced to introduce an optical film substrate 20 (usually a transparent film), and the first The roller set 10 is further provided with a first glue supply device 30 for supplying a glue 40, so that the first roller set 10 can be rolled on the first surface 201 of the optical film substrate 20 (only shown in Figures 2 and 3). Forming a first optical layer 21; and the features of the present invention include: a press-synthesizing unit 50 disposed at a post-process of the first roller set 10, the press-synthesizing unit 50 including an upper and lower spaced arrangement a press-fit seat 51 and a stage 52, wherein the stage 52 is used for the optical film substrate 20 to pass and carry, and the press-fit seat 51 can generate a press-fit action toward the stage 52, and the press-fit The pressing surface 53 of the seat 51 is provided with a second optical layer 22 for pressing against the second surface 202 of the optical film substrate 20 (only labeled 2 and 4), and the position of the second optical layer 22 is opposite to the position of the first optical layer 21 of the first surface 201; at least one positioning mark 60, as shown in FIG. 3, is formed in the first shape. When the optical layer 21 passes through the first roller set 10, it is synchronously formed on the first surface 201 of the optical film substrate 20 and is located at a set interval position of the first optical layer 21; at least one positioning sensor 70 is disposed at the pressure At least one position of the press-fit base 51 of the composite unit 50 is located at a set interval position of the second optical layer 22, and the position sensor 70 is used to detect the position mark 60 set by the induction optical film substrate 20 to obtain a press fit. The seat 51 performs the pressing position (as indicated by the arrow L1 of the first and fourth figures) of the precise position and time point (Note: the press seat 51 can perform the lateral displacement action according to the sensing signal feedback of the positioning sensor 70 for performing Positioning); and wherein the set interval pattern (including the separation distance and orientation) between the positioning sensor 70 and the second optical layer 22 is set to be between the positioning mark 60 and the first optical layer 21 The type (including the separation distance and the orientation) is the same.

With the above structural composition design, the first and second optical layers 21 and 22 formed by the first and second surfaces 201 and 202 of the optical film substrate 20 can be accurately formed into alignment; The invention combines the technical features of the second optical layer 22 on the second surface 202 of the optical film substrate 20 by the press-forming unit 50, and can pass through a single molding mechanism A before and after the operation flow to the single optical film substrate 20. The first and second surfaces 201, 202 form the first and second optical layers 21, 22, and the first and second optical layers 21, 22 can sense the positioning mark 60 by the positioning sensor 70. And achieving the effect of accurately aligning each other; and the technical characteristics of setting the spacing pattern between the positioning sensor 70 and the second optical layer 22 and setting the spacing pattern between the positioning mark 60 and the first optical layer 21 are the same. When the positioning sensor 70 and the positioning mark 60 are accurately aligned, the first and second optical layers 21 and 22 can be accurately aligned, thereby enabling the industry to achieve the precise alignment effect in the easiest way. .

As shown in FIG. 1, the stage 52 of the press-forming unit 50 may be provided with an irradiation hardening device 80 (which may be an ultraviolet illuminating lamp) to accelerate the hardening of the second optical layer 22.

The positioning sensor 70 can be an image capturing device, and the positioning mark 60 is set as a concentric multi-circle shape (as shown in FIG. 3). The concentric multi-circular shape positioning mark 60 type feature is mainly used to find the center point through the image recognition means searching for the inner circle, so as to achieve the effect of fast and accurate positioning. The positioning sensor 70 and the positioning mark 60 type disclosed in this paragraph are listed as a preferred embodiment, and are not limited thereto; for example, other sensing positioning technologies such as infrared sensing and laser sensing are specific. The type of implementation.

As shown in FIG. 1 , the post-flowing unit of the press-synthesizing unit 50 can be further provided with a rear roller set 90 (or a post-compression type unit) to continue the press-synthesizing unit 50 for subsequent steps. Combined molding operation of multiple optical layers or metal circuit layers. That is, the main core technology of the molding mechanism A of the present invention is that the first and second surfaces 201, 202 of the optical film substrate 20 can be formed into precisely aligned first and second optical layers 21, 22 The characteristic part, as for the number of composite layers of the final finished form of the optical film, is not limited, for example, the final finished form of the optical film disclosed in FIG. 2, the first optical layer 21 and the second optical layer 22 are attached. In order to separately combine a nano-silver circuit layer 23 and a multi-layer composite pattern of an encapsulation layer 24, such an optical film system can be applied as a surface optical constructor of a liquid crystal display panel.

As shown in FIGS. 3 and 4, wherein the first surface 201 of the optical film substrate 20 is at a different position of the positioning position of the positioning mark 60, at least one inspection reference mark 65 may be formed, and the inspection reference is used. The mark 65 is formed synchronously when the first optical layer 21 is formed and passes through the first roller set 10; so that the second optical layer 22 provided in the press-fit base 51 of the press-formed unit 50 is pre-positioned and used for the inspection. Reference mark 65 is matched with the alignment mark 66; thereby, after the second optical layer 22 is pressed against the second surface 202 of the optical film substrate 20, the operator can visually check the alignment mark for the inspection through the naked eye. The alignment state between the reference mark 65 and the reference mark 65 is quickly recognized to determine whether the first and second optical layers 21, 22 of the optical film substrate 20 are in a precise alignment state.

As shown in the third and fourth figures, the reference mark 65 for viewing and the alignment mark 66 for viewing can be set to a circle and the outer cross pattern is matched with an inner cross pattern.

As shown in FIG. 1 , a guiding buffer mechanism 15 is further disposed between the first roller set 10 and the press-forming unit 50 of the molding mechanism A, thereby buffering the guiding action of the optical film substrate 20 . In view of the changing state of the conveying speed; in this detail, since the pressing seat 51 of the press-forming unit 50 generates a pressing action each time, the optical film substrate 20 which is originally displaced forward must be generated for a certain period of time. The pause state, but the first roller set 10 still continues to guide the optical film substrate 20 forward in the process, so as to prevent the optical film substrate 20 interposed therebetween from forming wrinkles due to the speed difference, the guiding buffer mechanism 15 can solve this problem; and the guiding buffer mechanism 15 is embodied as shown in FIG. 1 and can be, but is not limited to, a plurality of rollers that are offset by a gap.

As shown in FIG. 5, the corresponding position of the first roller set 10 of the molding mechanism A can be further provided with a registration detector 16, a forward and backward adjustment screw device 17, and a left and right adjustment screw device 18, which can be borrowed. The alignment detector 16 detects the state of the conduction displacement accuracy of the optical film substrate 20 (including the error state in the front-rear direction and the left-right direction), and adjusts the advancement and retreat of the optical film substrate 20 by the front-back adjustment screw device 17. Further, the right and left positions of the optical film substrate 20 are adjusted by the right and left adjustment screw devices 18, whereby the accuracy of the optical film substrate 20 to guide the displacement state is maintained.

Advantages of the Invention: The "monolithic double-coated optical film forming mechanism" disclosed in the present invention mainly includes the press-compositing unit, positioning mark, and positioning by the first roller set process rear portion. Innovative unique structural types and technical features of the structure of the inductor, etc., enable the present invention to be formed on the opposite surface of a single optical film substrate to be quickly and accurately aligned with respect to the conventional structure proposed in the [Prior Art]. The optical layer achieves the practical improvement of the manufacturing cost and the improvement of the optical film forming precision, quality and efficiency, and the better industrial economic benefits.

In addition, by the other technical feature of the alignment mark for inspection and the reference mark for inspection, after the second optical layer is laminated on the second surface of the optical film substrate, the operator can easily visually observe the pair of views through the naked eye. The alignment state between the bit mark and the reference mark for inspection can quickly identify whether the first and second optical layers of the optical film substrate are accurately aligned, so as to avoid errors in the machine and the operator still does not know the situation. To achieve the advantages of improving the efficiency and quality of optical film forming operation precision monitoring.

The above embodiments are intended to be illustrative of the present invention, and are not to be construed as limiting the scope of the invention. The principles are changed and modified to achieve an equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

A‧‧‧Molding mechanism 10‧‧‧First roller set 15.‧‧Conveying buffer mechanism 16‧‧‧ Alignment detector 17‧‧‧ Forward and backward adjustment screw device 18‧‧‧ Left and right adjustment screw device 20‧ ‧‧Optical film substrate 201‧‧‧ First surface 202‧‧‧Second surface 21‧‧‧First optical layer 22‧‧‧Second optical layer 23‧‧‧Nano silver circuit layer 24‧‧‧ package Layer 30‧‧‧First glue supply 40‧‧‧Glue 50‧‧‧Compression type unit 51‧‧‧ Press seat 52‧‧‧Pushing table 53‧‧‧Fitting surface 60‧‧‧Positioning mark 65‧‧‧Refer to the reference mark 66‧‧ ‧ Alignment mark for inspection 70‧‧‧ Positioning sensor 80‧‧‧Lighting and hardening device 90‧‧‧ Rear roller set

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic plan view of a preferred embodiment of a molding mechanism of the present invention. Fig. 2 is a schematic view showing the change of the molding state of the optical film of the present invention. Fig. 3 is a perspective view showing the state in which the first roller group of the present invention is synchronously formed on the first surface of the optical film substrate to form the first optical layer and the positioning mark. Fig. 4 is a perspective view showing the embodiment of the press-compositing unit of the present invention. Fig. 5 is a perspective view showing a partial structure of the present invention.

A‧‧‧Molding mechanism

10‧‧‧First roller set

15‧‧‧Transfer buffer mechanism

16‧‧‧ Alignment detector

17‧‧‧ Forward and backward adjustment screw device

18‧‧‧ left and right adjustment screw device

20‧‧‧Optical film substrate

21‧‧‧First optical layer

22‧‧‧Second optical layer

30‧‧‧First glue supply device

40‧‧‧gel

50‧‧‧Compressed unit

51‧‧‧ Press seat

52‧‧‧stage

53‧‧‧ Pressing surface

70‧‧‧ Positioning sensor

80‧‧‧Lighting and hardening device

90‧‧‧ Rear Roller Set

Claims (8)

A single-sided double-coated optical film forming mechanism includes a first roller set, wherein the first roller set is introduced into an optical film substrate, and the first roller set is combined with a first glue supply The device is configured to supply a glue, so that the first roller set can roll-form a first optical layer on the first surface of the optical film substrate; and the feature comprises: a press-compositing unit disposed after the flow of the first roller set The press-forming unit comprises a press-fit seat in an upper and lower spaced relationship and a stage, wherein the stage is used for the optical film substrate to pass and carry, and the press seat can be oriented toward the stage a pressing action is generated, and the pressing surface of the pressing seat is provided with a second optical layer for pressing against the second surface of the optical film substrate, and the second optical layer is positioned first with the first surface The optical layer is positioned oppositely; at least one positioning mark is formed on the first surface of the optical film substrate and located at a set interval position of the first optical layer when the first optical layer is formed and passes through the first roller group; At least one positioning sensor, located at pressure The pressing unit of the molding unit is at least one position and located at a set interval position of the second optical layer, and the positioning sensor is configured to detect the position mark set by the sensing optical film substrate to obtain the precise position of the pressing seat to perform the pressing action. And a time interval between the positioning sensor and the second optical layer, and the setting interval pattern between the positioning mark and the first optical layer is the same; thereby, the optical film is made The first and second optical layers formed by the first and second surfaces of the substrate are capable of being accurately aligned. The single-sided double-coated optical film forming mechanism according to claim 1, wherein the stage of the press-forming unit is provided with an irradiation hardening device for accelerating hardening and shaping of the second optical layer. The single-sided double-coated optical film forming mechanism according to claim 2, wherein the positioning sensor is an image capturing device, and the positioning mark is set to be concentric and multi-circular. The forming mechanism of the single-sided double-coated optical film according to claim 3, wherein the post-flowing unit of the press-compositing unit is further provided with a rear roller group or a post-compression type unit to continue the The press-formed unit performs subsequent bonding operations of more optical layers or metal circuit layers. The single-sided double-coated optical film forming mechanism according to claim 4, wherein the first surface of the optical film substrate is formed at at least one reference for different viewing positions at the position where the positioning mark is formed. Marking, the inspection reference mark is formed in the first optical layer and synchronously formed by the first roller group; so that the second optical layer corresponding to the press-fit seat of the press-formed unit is pre-set with the view The alignment mark is matched with the reference mark; thereby, after the second optical laminate is bonded to the second surface of the optical film substrate, the operator can visually check the alignment mark and the inspection reference through the naked eye. The alignment state between the marks quickly identifies whether the first and second optical layers of the optical film substrate are in a precise alignment state. The single-sided double-coated optical film forming mechanism according to claim 5, wherein the inspection reference mark and the inspection alignment mark are both formed in a circle and the outer cross pattern is matched with an inner cross pattern. The mark type. The forming mechanism of the single-sided double-coated optical film according to claim 6, wherein a guiding buffer mechanism is further disposed between the first roller set and the press-forming unit of the molding mechanism, thereby using an optical film base The guiding action of the material generates a buffering action in response to the changing state of the guiding speed. The single-sided double-coated optical film forming mechanism according to claim 7, wherein the first roller set of the molding mechanism is further provided with a pair of position detectors, a front and rear adjustment screw device, and a left and right The adjusting screw device can detect the state of the displacement displacement accuracy of the optical film substrate by the alignment detector, adjust the advancement and retreat of the optical film substrate by the front-back adjustment screw device, and adjust the screw device by the left and right direction. The left and right positions of the optical film substrate are adjusted to maintain the accuracy of the displacement state of the optical film substrate.