TW513388B - Apparatus and method for etching glass panels - Google Patents

Abstract

An apparatus and a method for etching a plurality of glass panels are disclosed. The apparatus is constructed by mounting a panel holder in an etch tank equipped with a rotating means for rotating the panel holder during the etching process. The panel holder is adapted for receiving a plurality of glass panels and mounting the panels in a vertical position with at least two edges of the panels mounted in a plurality of tracks for protecting conductive elements formed on the edges of the panels and also for holding the panels securely during the rotation of the panel holder. The method for etching the panels can be carried about at a rotational speed between about 5 rpm and about 60 rpm in an etchant solution of a diluted acid such as HF having a concentration of at least 5 vol.%. A suitable immersing time for the plurality of glass panels in the diluted etchant for producing panels of smaller thicknesses is at least 3 min.

Description

513388 V. Description of the invention (1) ftagts ^ tgrrOTW »** · '» »1» __ ι_ι ___ ΙΒ · 1111111_u | N " 5-1 Field of the invention: The present invention relates to a device and method for etching a glass panel, in particular to a device Apparatus and method capable of simultaneously etching a plurality of glass panels on both sides of the panel and having better thickness uniformity, so as to manufacture a thin glass panel which can be used for a liquid crystal display. 5-2 Background of the Invention: Liquid crystal display devices have been used for many years. At first, it was mainly applied to small devices, such as electronic watches and computers. Liquid crystal display devices are now used in digital display and graphic display of instrument panels. The advantages of liquid crystal display devices are their unique properties, such as thin thickness and light weight, which require low driving voltage and low power consumption. Therefore, more applications of color liquid crystal display devices have recently been discovered, such as small-screen TVs, notebook computer display panels, and viewfinders for video cameras to replace traditional picture tube devices.

A liquid crystal display device may be composed of a color unit or a black and white unit. The device can also be constructed as a reflection type or a transmission type depending on the light source used. Since the liquid crystal molecules respond to an externally supplied voltage, the liquid crystal molecules can be used as an optical switch or a light valve. A liquid crystal display element is a single unit composed of two parallel glass substrates.

Page 4 5133 ^ 8 V. Description of the invention (2) The element ‘that is’ an upper glass substrate and a lower glass substrate. Each of the upper base plate and the lower substrate has a polarizing film coated on an outer surface thereof. The hole formed between the two plates is filled with a liquid crystal material. One of the most commonly used liquid crystal materials is a twisted nematic (TN) type, where twisted is a trend of liquid crystals, which forms a long line that rotates from one side of the space between two plates to the other of the space. One side. The angle of this rotation can be controlled through the process of manufacturing. &Amp; & When a light beam passes through the polarizing film and the liquid crystal display element, its polarization direction is rotated according to the physical rotation direction of the liquid crystal molecules. At the exit of the liquid crystal molecules The polarizing film on the side can be positioned to allow a rotated light beam to pass through the polarizing layer. When viewed from the side of the polarizing film, the image of a pixel or a liquid crystal cell is clear, that is, in a transmission mode. A transparent Conductors, such as indium-tirl oxide (ITO), are plated on the inside of the glass plate. The transparent conductor layer can be defined and patterned into a series of mutually perpendicular lines. When provided by a When voltage is applied to drive the appropriate lines of the panel, the liquid crystal molecules rearrange themselves to follow the electric field provided. Then, the liquid crystal molecules become untwisted as long as the voltage is present. The twisted beam will be blocked by the polarizing film on the exit side. When the voltage is turned off, the liquid crystal molecules return to their original state, making the molecules or pixels clear again. As mentioned previously, the typical The relatively low voltage and current make it one of the considerations for battery-operated equipment, of which low power consumption is a must.

513388 V. Description of the invention (3) A typical twisted nematic (TN) liquid crystal element is used in a small display, which has a twist angle of 90 degrees. Recently, a super twisted nematic (STN) material has been developed to form a twist angle of 270 degrees and thus obtain a high contrast. Therefore, many pixel elements can be displayed in multiple stages in a single display. . The above-mentioned liquid crystal display device is a transmissive type, and at the same time, a reflective liquid crystal display can also be used. In a reflection type liquid crystal display, one of the upper flat plate and the lower flat plate is replaced with a reflective flat plate, which can reflect light and make light impenetrable. The reflective plate may be made of a glass substrate with a transistor or other active elements built on it and coated with a metal reflective layer. In a reflective liquid crystal display device, the light source used to illuminate the liquid crystal display comes from the external environment, so the display is viewed in a reflective state. One of the characteristics of the reflective liquid crystal display device is that the noise is reflected from the upper part or the surface glass plate of the display device. In a conventional reflection type liquid crystal device, the reflection flat plate and the upper surface flat plate are parallel to each other. When an external light source is used in a liquid crystal device to generate an image under the law of reflection, the light reflected by the reflective plate and the upper plate have the same reflection angle. The light reflected from the upper surface plate cannot form an image in the liquid crystal display device, and only generates noise that reduces the contrast of the display device. Furthermore, the noise / signal (η o s e / s i g n a 1) ratio of the device is also increased, which affects the image quality produced by the display device.

513388 V. Description of Invention (4)

In order to efficiently apply liquid crystal displays to portable electronic products, such as portable televisions and notebook computers, important factors that must be considered are the reduction in the size and resetting of the liquid crystal display elements. Because the drive circuits and thin-film transistors used in liquid crystal display devices are necessary components and are already set in miniature sizes, it is not possible to further reduce the size of these components. Among liquid crystal display elements, the only element that can achieve weight reduction is a glass substrate. Since the glass substrate is a heavier element in the liquid crystal display element in proportion, the method of reducing the weight of the glass substrate has become an important issue in the field of liquid crystal display at present. In order to reduce the weight of the glass substrate, an obvious method is to reduce its thickness. However, the thinning process of the glass substrate is difficult to implement, because the thin glass is easily damaged due to the reduction in mechanical strength, and further, the thinning process may cause surface roughness, which will directly affect the image of the liquid crystal display element. quality.

Figure 1 illustrates U.S. Patent No. 5,98,45, filed by Kim and discloses an etchant for etching a glass substrate. In this method, an aqueous solution containing at least 5 percent by volume of HF in water and about 5 percent by weight of one alcohol, such as ethanol, methanol, propanol, butanol, and isopropanol, are disposed in a In container 12. A porous flat plate 14 generates bubbles 8 to separate the etching residue and dust particles from the surface of the glass substrate 21. Although the etched residue can be more easily removed by using an etchant containing an alcohol concentration of 5% by volume, but

Page 7 513388 V. Description of the invention (5) This method cannot achieve a uniform finish on a large area of glass substrate, and further, it cannot etch a glass substrate that already has conductive elements formed on the edge of the substrate material. As shown in FIG. 2, another method, US Patent No. 6,071,374 filed by kim, discloses a device for etching a glass substrate, which includes a first bath 1 3 containing at least The porous panel 5 has a plurality of spray holes in the first / valley pond and contains an etchant to spray the etchant onto the glass substrate 30. A container 20 for storing the etchant, and a pump 24 for supplying the etchant to the multi-panel 1 5 through the connection between the pump, the container, and the porous panel. As shown in FIG. 2, the glass substrate 3. It is fixed by at least one pair of projections 18 formed on the frame 18 and arranged between the porous panels 15. By the pressure of the help: the last name of the agent through the injection hole 16; the soil line 25 is provided to the bracket 18 = via the shoe agent supply tube, ^^, Dongyong Z4's roof force is transmitted to the connection to 彡 Mo Er = agent , The agent passes through the spray = more; = ί; 3 and the spray hole 16 is also set at _. The structure of the bubble system from gas to ΓΓ is compared to that shown in Fig. 1: the uniformity of the etching has been improved, the skin is ancient, and the soil / ^ ° This method still has many shortcomings As described on page 8 513388 V. Description of the invention (6), it is difficult to control the etchant sprayed through the spray hole 16 and this method can only be used to etch a plain glass substrate, that is, it cannot be used There is a glass panel with conductive elements set up above. This device does not have any equipment to protect any conductive elements that may be placed on the glass panel. 5-3 Object and Summary of the Invention: The object of the present invention is to provide a device for etching a plurality of glass panels, which does not have the disadvantages and disadvantages of the conventional device. Another object of the present invention is to provide a device for etching a plurality of glass panels, which has a controllability capable of producing a more uniform thickness on the panel. Another object of the present invention is to provide a device for etching a plurality of glass panels, and the device has the ability to improve the flatness across the surface of the panel. Another object of the present invention is to provide a device for etching a plurality of glass panels. The device, wherein the device includes a rotatable panel clamp for holding the glass panel, and rotating the glass panel in the etchant solution. Another object of the present invention is to provide an apparatus for etching a plurality of glass panels, wherein the apparatus includes a panel bracket to protect the surface of the panel.

Page 9

It is another object of the present invention to provide a conductive element that is free from contact with an etchant solution. The present invention provides a method for etching a plurality of broken glass panels at 2 shims by rotating a clamped plurality at a predetermined rotation speed. Dip; Panel fixture for panels in a fixed volume of etchant. Another method of the present invention is to oscillate the panel in a plurality of opposite directions by providing a phase for etching. Glass panel Another method of the present invention is to prepare a glass panel with a

The system provides a predetermined speed for etching a plurality of glass panels, about 5 to 60 r p m, to rotate and immerse the panel. According to the present invention, a method and apparatus for etching a plurality of glass systems to improve flatness and a thick panel are provided. Degree control

Piercing ί τ ί ΐ: In the embodiment, a space for etching a plurality of glass panels is provided, with two parts: a sheet, a bottom wall, and a back wall formed with a small upper opening and a plurality of glass panels. among them. Cooling device, the main two are fixed by friction: the opening is joined by a friction rod to an adjacent side; the bottom wall and the cymbal; ::: the first and second frictional forces of each of the pieces in the glass panel hold a plurality of two Two 'provide several tracks in one step' to the near side; the two side walls are connected with the third and fourth adjacent,, and 0 members of each piece in one to two = to connect to a set of fixtures

Page 10 513388 V. Rotating rod in the groove of the invention description (8); the groove has a space for containing a volume of the etchant solution, and the groove is further provided with a supporting member and a rotating member to form a plurality of glass panels The panel fixture is supported and rotated in a plane to a predetermined rotation speed. In a device for etching a plurality of glass panels, the groove may optionally include a member for circulating an etchant solution. The panel clamping device may be composed of two side walls, a bottom wall, and clamps with openings at the top, front and rear. The top, front, and rear openings are each joined by a friction bar, and the first, second, and third adjacent edges of each of the plurality of glass panels are fixed by friction. The plurality of channels may be composed of a material having sufficient elasticity to provide a frictional joint surface, or may be an elongated block having grooves therein to accommodate the third and fourth of each of the plurality of glass panels. Adjacent edges. The plurality of channels may further be formed by an elongated, elastic block having grooves therein to receive the plurality of panels, one edge of one side, or an edge sufficient to protect the glass panel. The height of the part of the wire. The support member may further include a bearing and a shaft for rotating the bearing. The rotating member may include an electric motor. The invention further discloses a method for etching a plurality of glass panels, the operation steps of which include firstly providing a panel fixture to clamp the plurality of glass panels; positioning the plurality of panels in the panel fixture vertically and at intervals; and positioning the panel The fixture is in an etching bath; a volume of etchant is injected into the etching bath to immerse the plurality of glass panels; and a predetermined rotation speed is used.

Page 11

V. Description of the invention (9) Degree 'on a complex I side, the' includes one in an opening wall 'and each side is made of a member, and the edge formed by the plate includes a plate clamp including a plurality of HFV liquid-retaining liquid for Etch a square shape and make a complex step, a panel edge. The ′ internal friction is reduced separately to provide a broken glass surface in a step, ’or a step, and a plurality of broken glass are engraved in a plurality of molds to rotate the panel fixture in the plane of the panel clamp. The method of breaking the glass panel further includes-having a composite member. Install at a proper position at the rotation speed of the oscillating die. A diluted one-volume plate is recessed in the worm for a panel fixture. The panel contacts the coin carving tool to vertically position the wiper joint member. All steps are included in a slot 'Or provide at least 1 percent of insecticide, or by a method comprising a plurality of glass-type friction grips on a wall, rotating at about 5 to 60 r pm in the opposite direction. Step c for at least 3 minutes The mold has at least two doses. The method further comprises a plurality of slope surfaces ^ fixed by friction at least, and a step of providing a friction joint made of synthetic rubber material in a guideway. During the rotation, the rod joins a plurality of panels and glass panels. This method rotates the face and the panel more alternately. This method is more 5 vol% · concentration when rotating, immersed in the _4 invention detailed description complex. ^ The invention discloses a device for etching a plurality of glass panels: manufacturing a glass panel with improved flatness and thickness. The device of the invention further allows etching of glass panels with wires, or panel edges

Page 12 Jooo 5. Description of the invention (10) _ A panel with conductive elements is formed on it to protect the conductive elements. The device is composed of a panel core rail covering the remaining etching agent, a rotary structure for rotating the panel fixture in the etching groove, and an etching groove. The panel fixture can be one-sided, two, two side walls of the main component,-the bottom wall and a back wall to clamp two vertically :: sub-shaped, by. The panel clamp may have an upper opening and a lower = several broken panel openings are connected by a -friction bar, and are fixed by friction = ^ each of them-the first and second adjacent edges of each piece. In a number of broken panels, in the panel fixture, the back wall and the bottom wall can be inserted into the glass wall with a friction force to fix a plurality of glass panels. Each of the two glass panels is provided with: side. The plurality of tracks can be combined with the fourth and provided with -concave #, to set the panel and cover the eclipse 22: 2, and the inside is formed on the edge ;; ::; by appropriately selecting the height of the track, the shaped wall can Progression is completely protected. The axis of the rotating member on both sides of the panel fixture, for example, with the bearing 4: > bearing and an outer part of the groove for connecting the screw fixture. % ,, ', up' /, can be set with a panel placed inside The volume etching solution of the present invention is provided for the panel ::: engraved: 'has to hold a certain-may be provided with a supporting member " A space inside the groove. The groove and the force turn the member to support and rotate on one of the planes of the plurality of cups, and + θ is provided with a plurality of glass substrates, for example, in an oscillation mode. A predetermined rotation speed'or. The panel clamp is rotated alternately in opposite directions.

V. Description of the invention (n) The present invention further discloses a method of using I to ^ Γ 蚀刻 to etch a plurality of glass faces under a four-work system, engraved with a coin 丨 the square of the mysterious plate, and the cover + d To rotate the panel in liquid. i is to go, rotate in the early direction, the speed is about 5 to 60 垓 the opposite side of the panel 6 > connect α β rpm or in the shaker 2 ″ direction for the bismuth to turn the etchant about f € in the formula where / Chen degrees HF. The 5 volume percent panel I f f3 of the negative white knife is a perspective view of the panel fixture 32 of the present invention. The i 3 panel / tool 32 has a front opening 42 and an upper opening 44. For example, the door opening 42 and the upper opening 44 of each door are each “upper” by a friction bar 46: the two end brackets 48 and 5 are provided. The two side walls 34 are disposed on the side W end brackets. The seats 48 and 50 allow the friction rod 46 to loosen the bracket groove 5 4 (shown as a dashed line in the figure) on the bracket slot 5 4 (shown on the two side walls 34 and 36). Slide. By rotating the bracket 52, the glass panels fin- \ are removed to facilitate the installation or removal of the complex ψ Ά φ ^. 〇. The threads are removed from the threads provided on the side walls 3 4, 36 Ans μ = wooden cymbal 5 2 can further remove the friction rod 4 6 from the ground side wall M, 36. 4f 3 progress shows that there are many installation guides 5 6 on the bottom wall 40. A mounting rail 58 provided on the back wall 38 is used to stand upright, to hold the broken glass panel 60, by joining the first and first fixed edges in the glass panel. The mounting rail 5 6 provides another important function, this function

Page 14

J 丄 JJOO V. Description of the invention (12) ---------- Only the novel device of the present invention can be used to conduct the electrical conductivity of the edge portion of the glass panel 60.

Pieces or wires, which can be * metal or conductive m is not less than ®). These conductive elements (IT0) 0J, such as elastomer (such as synthetic rubber), and the edge portion of the friction material when 60 can be closely attached to the two "glass panel components with sufficient flexibility. Appropriate selection of installation The grooves 62 are held in the road to protect the guides. The recesses 6 in the electrical tracks 56, 58 and the angle of the roads 58 are joined by security. The electrical components can be completely shielded and protected.

It should be noted that the bottom wall 40 and a back wall 38 are not the ones shown in the preferred embodiment, which can be easily obtained by having middle, high, and low. For example, the bottom wall 40 may be sufficient to support the plurality. ^ The support frame is taken as long as the frame holder 32 is in the volumetric engraving agent: J: 6. In the engraving process ’when the panel-step improved the silver engraving in the plural ::? When turning, the hollow frame is also suitable for the back wall Ϊ8 =: glass in f cycle. : As mentioned above, only using-hollow frame can further-further increase the surname

As shown in FIG. 3, a supporting member 64 is disposed on the side walls 34 and 36. The support member 64 can be a bearing element connected to a shaft (not shown) on the groove wall of the etching groove (as shown in FIG. 4) to engage a rotating member, for example, placed on the outer wall of the groove. Electric motor (as shown in Figure 5). This rotating member is of a conventional type, so it is not described in detail in this specification.

P.15 513388 V. Description of the invention (13) The friction bar 46 can be made of a light weight metal. Rough coating, for example, fluorite rubber can be used to provide a variety of materials used to make the panel fixture 32. For example, various acids can be used for engraving glass substrates. Fig. 4 is a three-dimensional E-plate fixture of the etching device of the present invention. 32 is placed in a space of an etching groove 74. 72 is the etching groove 74. A partially exploded view is shown in the figure to show the position of the panel clamp 32. The remaining volume of the filler is filled into the space 72 to a height which is at least completely immersed therein. The etch bath 74 may finally include a member 76, such as a liquid pump, to further enhance the uniform etchant solution in the cycle 72. The preferred illustration in the panel fixture 74 is a cross-sectional view shown in FIG. As shown in FIG. 5, when rotated by a motor 80, ^ is placed in the etching bath 7 by a bearing 64 and a shaft 78, and the panel jig 32 can be adjusted at an appropriately selected rate. The term "about" as used herein refers to the average value of the positive and negative errors. A total of 60 to 30 minutes is required for the plurality of panels, depending on the concentration of the etchant solution. When the HF concentration is greater than 5 percent by volume, the goal of reducing the thickness of the glass panel is to follow the Ming, and to make a rough friction properties. To resist a variety of general dilution solutions. 3. Pay special attention to the inside. Another mention is to show that the liquid (not shown in the figure) can be obtained by allowing the panel fixture 3 2 to have a liquid circulation ring. The space 3 2 is placed in the space 72 of the panel of the panel fixture 3 2 . When the soaking time within 5 to 60 rpm of rotation is within 10 minutes of about 3 times of the rice engraving agent in the preferred embodiment, 513388 Invention description (14) The direction of the erosion at the same time to improve the The panel is dust particles, and when the slot is selected, the novel device for etching a plurality of glass panels can be etched evenly and at a later time. The novel device for etching and thinning both sides of the glass panel is allowed. By flushing the panel with the two glass panel, the uniformity of the etching on the panel can be obviously produced with the entire panel having a uniform thickness. Furthermore, because it is vertically arranged in the etching bath, the chance of contamination by the etching residue or by-products on the surface of the panel is also significantly reduced. When selectively equipped with an etchant circulation device, the circulator filters and removes impurities or dust particles in the etchant, and provides better performance on the panel.

The novel device and method for etching a plurality of glass panels of the present invention have been appropriately disclosed in the above description, and accompanied by Figures 3 to 3. Although the present invention has been properly disclosed, the terminology used herein It should be understood universally and essentially, rather than a limitation on it. 4 Furthermore, although the present invention has been disclosed with a preferred embodiment, anyone familiar with the art in this field can easily apply it and make various changes after reading the description of the present invention. However, all equivalent changes and modifications made in accordance with the scope of patent application of the present invention shall still fall within the scope of the patent of the present invention.

P.17 513388 V. Description of the invention (15) A " Brief description of the drawings: The purpose, features and advantages of the present invention will be clearly understood from the following illustrations and detailed descriptions, of which "" Figure 1 is an explanatory exercise It is known that the method of engraving a glass panel is generated by generating bubbles in the remaining etching solution. Fig. 2 illustrates a second conventional method of spraying a glass etching solution on a glass panel to etch the glass panel. Fig. 3 illustrates the method of the present invention. A perspective view of a glass panel fixture, which holds a plurality of glass panels vertically at an interval. Figure 4 is a perspective view of a device for etching a plurality of glass panels according to the present invention, illustrating a glass panel fixture and an extra groove. 5 is a cross-sectional view of a device for etching a plurality of glass panels according to the present invention, which is provided with a panel fixture, a motor device for rotating the panel fixture, and an extra groove for containing a contact agent.

Page 18 513388 V. Description of the invention (16) Description of component number 8 Bubble 10 Etchant solution 11 Side wall 12 Side wall 13 First bath 14 Multi-well plate 15 Multi-well panel 16 Spray hole 17 Multi-well plate 18 Bracket 19 Projection 20 Storage container 21 glass substrate 22 filter 23 etchant supply line 24 pump 25 etchant supply line 26 gas tank 27 gas supply line 29 etchant supply line 30 glass substrate 32 panel fixture 1

Page 19 513388 5. Description of the invention (17) 34 Side wall 36 Side wall 38 Back wall 40 Bottom wall 42 Front opening α 44 Upper opening π 46 Friction bar 4 8 End bracket 50 End bracket 52 Bracket bolt 54 Bracket Groove 56 Mounting duct 58 Mounting duct 60 Glass panel 62 Groove 64 Support member 70 Etching groove device 72. Space 74 Notch groove 76 Liquid circulation member 78 Bearing 80 Motor

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Claims (1)

513388-Official luxury book _ 6. Scope of patent application ^ — ~ 1. A device for etching a plurality of glass panels, including: a cubic panel fixture consisting of two side walls, a bottom wall and a back wall Is used to vertically hold a plurality of glass panels therein. The clamp has an upper opening and a front opening, each of which is joined by a friction bar, and each of the plurality of glass panels is fixed by friction. The first and second adjacent edges, the back wall and the bottom wall are further provided with a plurality of perforations. The tracks are used to hold the third and fourth adjacent edges of each of the plurality of glass panels by friction. The two side walls are provided with a connecting member to be connected to a rotating member provided on the groove, and the fixture is located in the groove; and a groove having a space for containing a certain volume of the etchant solution, and the panel fixture is The tank is immersed in the volume of the etchant solution, and the tank is further provided with a supporting member and a rotating member ^ to support the panel cooler and rotate the panel fixture in a plane of a plurality of glass panels at a predetermined rotation speed. 2. The device according to item 1 of the patent application scope, wherein the tank further includes a component for circulating the etchant solution. 3. The device according to item 1 of the patent application scope, wherein the panel fixture is composed of two side walls, a bottom wall having the upper, front and back panel fixture openings. 4. For the device in the scope of patent application item 3, wherein the upper opening, the front opening and the back opening are each joined by a friction bar, and the friction is used to fix the device. Page 21 513388 VI. Scope of Patent Application The first, second and third adjacent edges of each panel in a plurality of panels. 5. The device as claimed in claim 1, wherein the plurality of tracks are made of a material having sufficient elasticity to provide a frictional joint surface. 6. The device according to item 1 of the patent application scope, wherein the plurality of tracks are composed of an elongated block having a groove therein for receiving the third and third pieces of each of the plurality of glass panels. Four adjacent sides. 7. The device according to item 1 of the scope of patent application, wherein the plurality of instructions are composed of a slender, elastic block with a groove inside to receive a plurality of panels, one of which has an edge on one side . 8. The device according to item 1 of the patent application, wherein the plurality of tracks form a height sufficient to protect the wires formed on an edge portion of the glass panel. 9. The device of claim 1, wherein the support member includes a bearing and a shaft for rotating the bearing. 10. The device according to item 1 of the patent application scope, wherein the rotating member comprises an electric motor. 11. A method for etching a plurality of glass panels, comprising the following steps Page 22 513388 6. The scope of the patent application provides a panel fixture to hold a plurality of panels; a plurality of glass panels are arranged vertically and spaced in the panel fixture; the panel fixture is placed in an etching tank; a certain volume of An etchant is filled into the etching bath and immersed in the plurality of glass panels; and the panel fixture is rotated in a plane of the plurality of panels at a predetermined rotation speed. 1 2. The method according to item 11 of the scope of patent application, further comprising a step of providing a cubic panel fixture having at least two open sides and allowing the plurality of panels to contact the #etching agent. 1 3. The method according to item 11 of the scope of patent application, further comprising a step of vertically placing the plurality of panels in the panel fixture, and each panel is fixed by friction with at least one by a frictional engagement member. edge. ‘14. The method according to item 13 of the scope of patent application, further comprising a step of providing the frictional engagement member in a track having a groove therein. 15. The method according to item 13 of the scope of patent application, further comprising a step of providing the frictional engagement member in a guideway made of an elastic material. 16. The method according to item 12 of the scope of patent application, further comprising a step of, during the rotation, engaging a compound by at least one friction rod mounted on the opening wall, respectively. Page 513 388 The edges of several panels are used to hold the plurality of panels 17 in an appropriate position. For example, the method of the scope of application for patent application 丨 丨 further includes a step of 'turning the panels alternately in opposite directions in the capping mode. With. 18. The method according to item 丨 丨 of the scope of patent application, further comprising a step of rotating the panel fixture at a rotation speed of 5 to 60 rpm (revolutions per minute, revolutions per minute). 19. The method according to item 11 of the scope of patent application, further comprising a step of providing a volume of money engraving agent in a diluted hydrofluoric acid solution having a concentration of at least 5 percent by volume. ^ 20. Turning around If the method of printing item 11 of the patent scope, it further includes a step of immersing the plurality of panels in the etching solution for at least 3 minutes. Page 24