TW201227015A - Light guide panel and fabricating method thereof - Google Patents

Abstract

A light guide panel (LGP) having a surface which has a first direction and a second direction vertical with each other is provided. The LGP includes an optical element array and a rubbing portion. The optical element array is disposed on the surface of the LGP and extended in the first direction. The rubbing portion is disposed on the surface of the LGP and extended in the second direction. Moreover, a fabricating method of the LGP by utilizing a cutting tool is also provided.

Description

201227015 GLT10032TW(I) 36512twf.doc/n VI. Description of the Invention: [Technical Field] The present invention relates to a light guide plate and a method of fabricating the same, and more particularly to a light guide plate having an array of optical elements, and A method of fabricating a light guide plate of the optical element array on a light guide plate by using a cutting tool. Eight [previous technology]

In the field of precision machining, it is common to use a cutter to cut a variety of light guide plates to form an optical microstructure. Taking the surface treatment of the light guide plate as an example, when a light guiding microstructure is to be formed on the light guide plate, the groove can be scribed on the surface of the light guide plate with a single tool. However, such an approach has the following disadvantages: 'First' the life of the tool will be shortened. In the process of scribed grooves, since the tool continuously rubs directly with the light guide plate, the tool is prone to wear, deformation, hardness reduction, fracture due to high heat, and the like, and when the tool is damaged, The precision of the grooved groove will also drop, which will result in a failure in the yield of the light guide plate. Furthermore, the above processing method is extremely slow. Since each gully is operated back and forth with a single-tool pin, the overall machining time is lengthened when the number of grooves is large and the area scribed is considerable. Look at the 'can also try to close the single-row of short tools to increase the processing speed, but this way will be due to the knife, method, and produce instant high heat, but shorten the life of the tool. ~ Speed moving, the above The tool is not suitable for the special shape of the microstructure processing disk 201227015 GLT10032TW (I) 36512twf.doc / n mass production. When the user wants to have a special need to change the different tools to carry out the different. ^, and there is the first - micro Structure (4) - The groove needs the first type of tool to be closed, and the second groove with the second type of microstructure needs to be scribed with the second type of tool. This will cause the machining path of the tool to be difficult to drag. The big county is awkward. It is complicated to do so. The structure of the 2 疋 述 早 — 刀具 刀具 刀具 刀具 刀具 制作 制作 制作 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具 刀具(4) A method for fabricating a light guide plate that solves the prior art is required. SUMMARY OF THE INVENTION The present invention provides a light guide plate having an optical element and also having a score line capable of improving the optical effect of the light guide plate. The invention provides The present invention provides a light guide plate, which has a surface, a surface direction and a second direction, the first direction and the second direction. The light guide plate comprises: an array of optical elements and an array of engraved scribe lines disposed on a surface of the light guide plate, and wherein the line of the first direction is disposed on the surface of the light guide plate and in the second direction The present invention further provides a method for fabricating a light guide plate. The first = a light guide plate having a surface having a second supply to the same direction - the first direction and the second direction Loss between - corner direction and second direction again 201227015 GLT10032TW(I) 36512twf.doc/n

At least one cutting tool is provided, wherein each cutting tool includes a base, at least one cut, and a plurality of microstructures. The base has a rotating shaft. The cutting portions are provided on the base and arranged along the extending direction of the rotating shaft. The microstructure is disposed on the cutting portion. Thereafter, the cutting tool is rotated to cut the light guide plate, wherein the cut light guide plate includes: an array of optical elements and a score line. The optical element array is disposed on the surface of the light guide plate and extends in the first direction. The scribe line is disposed on the surface of the light guide plate and extends in the second direction. In an embodiment of the invention, the scribe lines are distributed on the same horizontal/vertical reference line of the surface or on different horizontal/vertical reference lines. In an embodiment of the invention, the angle is 90 ± 10 degrees. In an embodiment of the invention, the surface includes: a light incident surface, a light exit surface or a light reflecting surface of the light guide plate. In an embodiment of the invention, the optical element array includes: a plurality of optical microlenses protruding from a surface of the light guide plate, and the shape of the optical microlens is selected from the group consisting of a semicircular shape, a V shape, and an R groove. combination. In an embodiment of the invention, the optical element array includes: an optical microlens, recessed on a surface of the light guide plate, and the shape of the optical microlens is selected from a semicircular shape, a v shape, and a R groove. And their combinations. In the embodiment, the optical element array described above includes: the optical microlenses are different from each other in size relative to one or more optical microlenses of the present invention. In one embodiment of the invention, the cutting portions are coaxially arranged in the extending direction. 201227015 GLT10032TW(I) 36512twf.doc/ „ In one embodiment of the invention, the cutting portions are spirally arranged along the extending direction of the rotating shaft. In an embodiment of the invention, the base portion and the cutting portion are In the embodiment of the present invention, the microstructure is protruded from the cutting ridge, and the shape of the microstructure is selected from the group consisting of a semicircle, a V shape, a R groove, and a group thereof. And the shape of the microstructure is complementary to the shape of the optical microlens of the optical element array. In the present invention, the shape of the above-mentioned microstructure is concave and the shape of the microstructure is selected from the group consisting of a half κ shape and a V shape. The R groove and the core and the shape of the microstructure are complementary to the shape of the wire micro-transparent of the optical element array. The size of the above-mentioned microstructures is based on the above. The light guide plate of the present invention has an optical element array. The engraved line 'where the scribing line can provide the optical effect of atomizing light. Using the two HH for the guide wire to ride on the _ or the surface, it can be on the guide wire (4) the ground wire element, the wire. Especially the 'light guide plate Suitable for making The optical element array and the scribe line are formed on the extremely thin thickness of the light guide plate. The above features and advantages of the present invention can be more clearly understood, and the embodiments will be described in detail below with reference to the accompanying drawings. 201227015 GLT 10032TW(I) 36512twf.doc/n [Embodiment]

[Light Guide Plate I] FIG. 1 is a schematic perspective view of a light guide plate according to an embodiment of the present invention, and a schematic view of an optical microstructure of a surface of the light guide plate. Referring to Fig. 1, the light guide plate LGP has a surface S1 (S2 or S3) having a first direction D1 and a second direction D2 which is at an angle Θ to the first direction D1. In one embodiment, the surface S1 of the light guide plate LGP may be a light incident surface, the surface S2 of the light guide plate LGP may be a light exit surface, and the surface S3 of the light guide plate LGP may be a light reflecting surface. The angle Θ may be 90 ± 10 degrees, preferably 90 degrees. The optical microstructure of the light guide plate L G P may include an optical element array OPA and a scribe line CL. The optical element array OPA may be disposed on the surfaces si, S2, S3 of the light guide plate LGP and extend in the first direction D1. In more detail, the optical element array OPA may include: a plurality of optical microlenses LEN' are recessed on the surface of the light guide plate LGP, and the shape of the optical microlens LEN is selected from semicircular, v-shaped, R-grooves and Combined (complementary to the microstructure 13〇 protruding from the cutting portion 12〇 shown in Fig. 6). In addition, the optical element array OPA may further include: a plurality of optical microlenses LEN protruding from the surface of the light guide plate LGP, and the shape of the optical microlens 1EN may be selected from a semicircular shape, a V shape, an R groove, and a combination thereof (complementary Subsequent to the microstructure 13 内) recessed in the cutting portion 12A shown in FIG. Furthermore, the dimensions of the plurality of optical microlenses LEN of the optical element array 〇PA may be the same or different, wherein the same or different dimensions mean the same or different, or the same or no volume the same. Learning element array 201227015 GLT10032TW(I) 36512twf.doc/n Column OPA can be regularly or randomly arranged on the surface SI, S2, S3 of the light guide LGP to see the desired optical effect. Referring again to Fig. 1, the scribe line CL may be disposed on the surfaces SI, S2, and S3 of the light guide plate LGP and extended in the second direction D2. In more detail, the optical element array OPA and the scribe line C1 may be formed on at least one surface SI, S2 or S3 of the light guide plate LGP, or on all of the surfaces SI, S2, S3. Furthermore, the scribe lines CL may be randomly distributed on the surfaces SI, S2, S3, that is, the scribe lines CL may be distributed on the same horizontal/vertical reference line (not yet) or different from the surface S1. Horizontal/vertical reference line. In more detail, the surface S1 may have a plurality of horizontal reference lines, and the horizontal reference line may be regarded as a plurality of vertical reference lines by turning 90 degrees, and the scribe line cl may be located at the same horizontal reference line (regularity) Set), or the position of a different horizontal reference line (random setting), so that the optical effect of the matte surface can be caused by the setting of the scribe line CL. The method of producing the light guide plate of the present invention will be further described below. [Manufacturing Method of Light Guide Plate] FIG. 2 is a schematic flow chart showing a manufacturing method of a light guide plate according to an embodiment of the present invention. Figure 3 is a schematic illustration of a cutting tool in accordance with an embodiment of the present invention. The method of manufacturing the light guide plate M100 of the present invention will be understood by referring to Figs. 1, 2 and 3. As can be seen from FIG. 2, the method 100 of manufacturing the light guide plate includes steps S110 to S130. First, in step S110, at least one light guide plate LGP as shown in FIG. 1 is provided. The light guide plate LGP has a surface SI1, S2, S3, which is 201227015 GLT10032T W (I) 36512twf. doc/n surface SI, S2 S3 has a first direction D1 and a second direction D2 that is at an angle Θ to the first direction D1.

Further, in step S120, at least all of the cutting tools 100 as shown in Fig. 3 are provided, wherein each cutting tool 100 includes a base 110, at least one cutting portion 120, and a plurality of microstructures 130. The base 110 has a rotating shaft 110a. The cutting portion 120 is provided on the base portion 110 and arranged along the extending direction L of the rotation axis 11a. The microstructures 130 are disposed on the cutting portion 120. The number, length, position of the dicing portions 120, and the like arranged in the base portion 11 can be changed 'that is, designed according to the optical effect required for the light guide plate LGP. Thereafter, in step S130, the cutting tool 1 is rotated to cut the light guide plate LGP, wherein the light guide plate LGP shown in Fig. i after cutting includes the optical element array 〇PA and the scribe line cL. The optical element array OPA is disposed on the surfaces SI, S2, S3 of the light guide plate LGP and extends in the first direction D1. The scribe lines (^ are disposed on the surfaces SI, S2, S3 of the light guide plate LGp and extend in the second direction D2. It is worth noting that 'the cutting tool can be used at least on the surface S1, S2 of the light guide plate LGp < S3, or all surface s2, morphing or surface treatment, to form the optical element array 〇pA and the scribed green CL. Green shows three cutting parts 12〇, however, the quantity is: And: respectively, the same or different from each other, the micro-tops are respectively set to each other 201227015 GLT10032TW (I) 36512twf.doc / n The above cutting tool 100 by placing the microstructure 130 on the cutting portion 120 'to make the g cutting tool 1 When the idling rotation is performed, the microstructure I% can cut or scribe the light guide plate LGP that is in contact with the microstructure 130 in the tangential direction of the rotation direction R of the cutting tool 100. As a result, the light guide plate is cut. At the same time, the optical element array OPA and the score line CL are naturally formed on the cut surface of the light guide plate LGp, and the shape of the optical microlens LEN of the optical element array 〇pA and the microstructure of the cutting tool 1〇〇 are The shapes are complementary to each other. Please refer again 3' cutting portion 120 may be coaxially arranged along the extending direction L of the rotating shaft 11A. In another embodiment, the cutting portion 12A may also adopt other arrangements. FIG. 4 is another embodiment of the present invention. A schematic view of a cutting tool. Referring to Figure 4, the same components of the cutting tool 1 2 and the cutting tool 1 of Figure 3 are labeled with the same symbols. It may be noted that in this embodiment, the cutting portion 120 is along The rotation axes 110 & are arranged in a spiral direction. By means of a coaxial arrangement or a spiral arrangement, the plurality of microstructures 13 on the cutting portion 120 can be cut or surface-engraved, so that the cutting tool 100 is suitable. For the cutting or surface treatment of a workpiece having a large area, the problem of the tool damage caused by the repeated cutting by a single tool can be solved. Referring again to FIG. 3, the base 110 and the cutting portion 12 are In one piece, that is, the cutting portion 12 can be formed directly on a cylinder (not shown) by precision machining or electromachining, so that the cutting portion 12 and the base 110 are one. Connected. In another embodiment, the base 110 of the cutting portion 120 may be employed 201227015 GLT10032TW (I) 36512twf.doc / n

Other connection methods. Figure 5 is a schematic illustration of still another cutting tool in accordance with an embodiment of the present invention. Referring to FIG. 5, the same components of the cutting tool 104 as the cutting tool 100 of FIG. 3 are denoted by the same reference numerals. It may be noted that in the embodiment, the base 110 and the cutting portion 12 are assembled to each other. In more detail, the base 110 and the cutting portion 12A are separately manufactured, and the cutting portion 120 can be fixed to the base portion by using a point or a special fitting structure or the like to make the cutting. When the tool 104 is rotated at a high speed, the cutting portion base portion 110 is detached. θ Figure 6 is a schematic view showing the microstructure of a cutting tool according to an embodiment of the present invention. Referring to Fig. 6, the area of the cutting portion 丨2〇 is enlarged, and the shape of the microstructure 130 is seen. Referring to FIG. 6 , in an embodiment, the microstructure 130 may protrude from the cutting portion 120 , and the shape of the microstructure 13 可以 may be selected from a semicircular shape, a V shape, an R groove, and a combination thereof. That is, as shown in FIG. 6, the semicircular microstructures 13a, the v-shaped microstructures 13, and the R-channel microstructures 130c, 130d. With the microstructure 130 protruding from the cutting portion 12A shown in Fig. 6, an optical microlens [内 which is recessed on the surface of the light guide plate LGP can be cut on the surface of the light guide plate LGP. Fig. 7 is a schematic view showing the microstructure of a cutting tool according to another embodiment of the present invention. Referring to FIG. 7, in another embodiment, after the area B of the cutting portion 12A is enlarged, it can be seen that the microstructure 13 is concave in the cutting portion 12A, and the shape of the microstructure 130 may be selected from The combination of a semicircular shape, an inverted v shape, and a ruler groove f, that is, a semicircular microstructure 13 as shown in FIG. 7, such as a V subshaped microstructure 130b, an R groove microstructure uoc, 13〇d. The optical structure protruding from the surface of the light guide plate LGP can be cut on the surface of the light guide plate LGP 11 201227015 GLT10032TW(I) 36512twf. doc/π by using the microstructure 丨3 内 recessed in the cutting portion 120 shown in FIG. Microlens LEN. The above various microstructures 130a to 130d may have the same or different sizes from each other. For example, R groove microstructures 130c, 130d' having different sizes or a plurality of semicircular microstructures 13a of the same size may be used. Wait. Those skilled in the art will be able to combine the types, sizes, and the like of the microstructures 130a to 13〇d according to design requirements. In this way, a wide variety of microstructures 13 can be combined directly on the cutting portion 120, and the conventional solution can be solved.

It is necessary to replace the machining path of the tool caused by different tools, and the problem of changing the tool sequence becomes extremely complicated. Fig. 8 is a schematic view showing the cutting of the light guide plate by the cutting tool according to the embodiment of the present invention. Referring to Fig. 8, the cutting tool 1 can be rotated at a high speed in the rotational direction R to cut a single sheet of the plurality of stacked light guide plates LGP in the cutting direction c. It is to be noted that, since the cutting portion 12 of the ten-cutting tool 1 is provided with the microstructure 13 〇, the surface s (light-in surface) of the light guide plate LGp can be formed while cutting the light guide plate LGP. The optical element array 〇pA and the line CL shown in Fig. 1 . 2

According to the above, the cutting tool 1 可 can be used for the multi-layer stacked light guide plate LGP, and the potential time of the LGp can be adjusted, or the surface S1 (human light surface) of the light guide plate LGP can be formed. The required optical element array 0PA and the scribe line (^. In particular, for the relatively light-thickness light guide plate LGP, the cutting tool 1 〇〇 can be easily used for the table φ S1 of the light plate LGP (person; ^ face) Engraved|Extracted optical component column OPA 〇12 201227015 GLT10032TW(I) 36512twf.doc/n

Fig. 9 is a schematic view showing the surface treatment of the light guide plate by the cutting tool according to the embodiment of the present invention. Referring to FIG. 9, the cutting tool 100 can be rotated at a high speed. Then, the light guide plate LGP is transported on the conveyor belt (not shown) in the conveying direction D. The microstructure 130 on the cutting portion 12 is connected to the light guide plate LGP. The surface S2 (light-emitting surface) or S3 (reflective surface) is in contact with the optical element array OPA and the scribe line CL. The formed optical element array OPA is, for example, a lens array that provides the desired optical effect, and the scribe line CL can be used to atomize light. Figure 10 is a schematic illustration of a cutting tool module in accordance with an embodiment of the present invention. Referring to Fig. 10, the cutting tool module 200 includes a plurality of the above-described cutting tools 100, wherein the cutting tools 1 are arranged in the extending direction L of the rotating shaft u〇a. As shown in Fig. 9, only one cutting tool 1 is not intended to be surface-treated, however, the present invention is not limited to the use of one cutting tool 1 00. More specifically, when the area of the light guide plate LGp is increased, the cutting tool module 200 constituted by the cutting tool 10 can be easily cut or surface-treated for the large-area light guide plate LGP. Further, a light guide plate LGp two tool set 200 corresponding to the specific size can be assembled to perform a second or surface treatment for the light guide plate of the specific size. Furthermore, when any of the cutting aids module measurement has 100 damage (four), the damaged (four) guards can be directly replaced to facilitate the improvement of maintenance efficiency. In particular, it is also possible to arbitrarily combine various cutting tools 100 to just to form a cutting tool 200. As a result, 13 201227015 GLT10032TW(I) 36512twf.doc/n can produce various types of optical element arrays 〇PA. In summary, the light guide plate of the present invention and the manufacturing method thereof have at least the following advantages: the cutting or surface treatment of the light guide plate by the cutting and protecting device according to the embodiment of the present invention can form an optical element array on the surface of the light guide plate. Carefully scribing 'the towel', the scribing line provides the optical effect of atomizing light. And the method of fabricating the light guide plate is suitable for forming an array of optical elements and scribe lines on a light guide plate having an extremely small thickness. When cutting or surface treatment is performed, a plurality of micro φ structures provided on the cutting portion can be scribed for the light guide plate' to increase the processing speed of the cutting tool and extend the life of the cutting tool. In addition, by forming a wide variety of microstructures on the dicing portion, any desired array of optical elements can be formed on the light guide plate, and processing of the array of optical elements suitable for a particular shape is performed. The disclosure of the invention is not intended to limit the invention as to the ordinary knowledge of the art, and the scope of protection of the invention may be changed without departing from the spirit and scope of the invention. The scope defined in the patent application is subject to change. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a light guide plate and an optical microstructure of a surface of a light guide plate according to an embodiment of the invention. FIG. 2 is a schematic flow chart of a method for fabricating a light guide plate according to an embodiment of the invention. 3 is a schematic view of a cutting tool according to an embodiment of the present invention. 14 201227015 GLT10032TW(I) 36512twf.doc/n Schematic diagram of the cutting tool. Figure 4 is a schematic illustration of an embodiment of the invention. Figure 5 is a schematic view of a microstructure of an embodiment of the present invention. Figure 6 is a schematic view of a microstructure of a cutting device according to another embodiment of the present invention. Figure 7 is a cross-sectional view showing another embodiment of the present invention.曰, ' Fig. 8 is a schematic view showing the cutting of the light plate by the cutting "" according to the embodiment of the present invention. Fig. 9 is a schematic view showing surface treatment by dicing in accordance with an embodiment of the present invention. ° Guard for Light Guide Figure 10 is a schematic view of a dicing block module in accordance with an embodiment of the present invention. [Main component symbol description] 100, 102, 104: cutting tool 110: base 110a: rotating shaft 120: cutting portion 130: microstructure 130a: semicircular microstructure 130b: V-shaped microstructure 130c, 130d: R groove microstructure 200: Cutting tool module A, B. Area C: Cutting direction 15 201227015 GLT10032TW(I) 36512twf.doc/n CL : scribe line D: conveying direction D1: first direction D2: second direction LGP: light guide plate L : Extension direction of the rotating shaft M100 : Method of manufacturing the light guide plate OPA : Optical element array R : Direction of rotation S : Surface 51 of the workpiece : Light-incident surface 52 : Light-emitting surface 53 : Reflective surface S110, S120, S130 : Step 16

Claims (1)

201227015 GLT10032TW(I) 36512twf.doc/n VII. Patent Application Range: 1. A light guide plate having a surface having a first direction and a second direction, between the first direction and the second direction The light guide plate includes: an optical element array disposed on the surface of the light guide plate and extending in the first direction; and a scribe line disposed on the surface of the light guide plate, and The second direction extends. 2. The light guide plate of claim 1, wherein the scribe line is distributed on the same horizontal/vertical reference line of the surface or on a different horizontal/vertical reference line. 3. The light guide plate of claim 1, wherein the angle is 90 ± 10 degrees. 4. The light guide plate of claim 1, wherein the surface comprises: a light incident surface, a light exit surface or a reflective surface of the light guide plate. 5. The light guide plate of claim 1, wherein the optical element array comprises: a plurality of optical microlenses protruding from the surface of the light guide plate, and the shape of the optical microlenses is selected from the group consisting of Semicircular, V-shaped, R-groove and combinations thereof. 6. The light guide plate of claim 1, wherein the optical element array comprises: a plurality of optical microlenses recessed on the surface of the light guide plate, and the shape of the optical microlenses is selected from the group consisting of In semicircular, V-shaped, R-groove and combinations thereof. 7. The light guide plate of claim 1, wherein the light 17 201227015 ULi'anjUTW (1) 36512 twf.doc/n element array comprises: a plurality of optical microlenses, the thin optical lens The dimensions are the same or different. 8. A method of fabricating a light guide plate, comprising: providing at least one light guide plate having a surface having a first direction and a second direction, between the second direction and the second direction An at least one cutting tool, comprising: a base portion having a rotating car; at least one cutting portion disposed on the base plate and arranged along an extending direction of the rotating car; a plurality of microstructures Provided in the cutting, the upper portion of the upper jaw and the cutting tool for cutting the light guide plate, wherein the cut light guide plate comprises: - an array of optical elements disposed on the surface of the light guide plate And extending in the first direction; and a scribe line disposed on the surface of the light guide plate and extending in the second direction. 9. The method of fabricating a light guide according to claim 8, wherein the score line is distributed on a cabinet/horizontal/vertical reference line of the surface or on a different horizontal/vertical reference line. > 10. In the method of fabricating a light guide plate according to item 8 of the patent application, the angle is 90 ± 10 degrees. U. The method of fabricating a light guide plate according to claim 8 wherein the surface comprises: a light incident surface, a light exit surface or a reverse surface of the light guide plate; 201227015 GLT10032TW(I) 36512twf.doc/n smooth surface Going to the second X: The makers 4 of the light guide plate described in Item 8 of Shangliwei are arranged coaxially along the extending direction of the rotating shaft. 13. The method of producing a light guide plate according to the eighth aspect of the invention, wherein the 5th cutting portion is spirally arranged along the extending direction of the rotating shaft. 14. The method of fabricating a light guide plate according to claim 8, wherein the base portion is integrally formed with the cut portion or assembled to each other. 15. The manufacturer of the light guide plate according to item 8 of the patent application of claim 8: the micro structure protrudes from the cutting portion, and the shape of the microstructures is selected from a semicircular shape, a ν shape, and a R groove. And a combination thereof, the shape of the optical microlens of the array of optical elements:,,,. =· For example, please refer to the patent _8th material light guide plate method, in which the S-thin microstructure is concave in the cutting portion, and the square shape is selected from the semicircular shape, the v shape, the R groove and the shape The shape of the structure is complementary to the lining of the forest element. 4 micro-junctions! 7. The shape as claimed in item 8 of the patent application. In the method, the size plates of the structure are identical or different from each other. 19