JP2008304760A - Display part surface protective cover material for flat panel display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display part surface protective cover material for a flat panel display for improving the operability. <P>SOLUTION: In the display part surface protective cover material 11 for the flat panel display, bent parts 11a and 11b are formed, by bending the end parts of the cover material so that the cover material covers the upper and lower faces 14a and 14b of a bezel 14 that are adjacent to the surface of a display part 13 of the flat panel display. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a protective cover material suitable for protecting the surface of a display part of a flat panel display such as a liquid crystal display or a plasma display used for a personal computer, a television or the like.

  Usually, the surface of the module display of flat panel displays used in personal computers, televisions, etc. is protected by a surface protection cover material to prevent dust, dust, etc. from adhering, scratching, and soiling during the assembly and transportation processes. The Such a surface protective cover material is, for example, a method of attaching a polyethylene, polypropylene, polyethylene terephthalate film or the like having a releasable adhesive material layer on the surface in contact with the flat panel display display surface to the flat panel display display surface. It has been known. In addition, a method of superimposing polyethylene, polypropylene, polyethylene terephthalate film, etc. that does not have an adhesive material layer on the flat panel display display surface side and fixing to the flat panel display using an adhesive tape or the like at the film edge Etc. are known. Of these methods for protecting the surface of the display portion, the latter method that does not use an adhesive layer is economically excellent and has been widely used in recent years.

However, when it is actually used in the distribution process, especially when it is used after distribution and storage under high-temperature and high-humidity conditions, when the protective cover material is peeled off, the optical color change is recognized on the display surface, and the display It is known to reduce the reliability of the device. A method for solving this problem by using a polymer film having an excellent moisture permeation amount for the protective cover material, thereby reducing the difference in moisture absorption between the protective cover material and the adhesion portion and the non-adhesion portion of the polarizing plate surface. It has been proposed (see Patent Document 1). As the polymer film, a film having a moisture permeability of 100 g / m ² · 72 hr or more after 72 hours in an environment of 35 ° C. and 80% RH is used.

  Aside from the above problem, in the type of protective cover material that does not have an adhesive layer, the flat panel display display surface and the protective cover material are in close contact with each other, where water vapor accumulates and becomes wet. There was a problem in that the optical color change in the wet part of the display, and the surface of the display part was extremely dirty after the wet part was dried. In addition, there is a problem that foreign matter that has entered between the surface of the flat panel display unit and the protective cover member is rubbed against the surface of the display unit due to vibration during transportation and is damaged.

  For this reason, the non-adhesive type protective cover material is only fixing the frame-shaped fixing frame on the peripheral edge called the bezel and the film end portion of the liquid crystal module display part using an adhesive tape or the like, It is thought that there is a cause for water vapor to freely enter from the peripheral portion. Further, the non-adhesive type protective cover material is fixed to the bezel portion of the liquid crystal module, and basically the protective cover material and the display unit surface of the liquid crystal module are not in close contact with each other. However, in actuality, there are many cases where the contact is made particularly near the center of the display part due to the way of sticking, drooping of the protective cover material due to environmental conditions, curling, or the like. In this state, when water vapor freely enters from the peripheral portion, it is considered that the water vapor is accumulated near the center of the display unit and becomes wet. In addition, this problem occurs even when the polymer film excellent in moisture permeability proposed in Patent Document 1 is used for the protective cover material. Therefore, the moisture permeability of the protective cover material (moisture permeability after being left in a high humidity atmosphere). It cannot be dealt with only by adjusting the amount. The same problem may occur not only in the protective cover material on the display unit surface of the liquid crystal module but also in the protective cover material on the display unit surface of a flat panel display such as a plasma display.

  Furthermore, these problems are particularly prominent when a protective cover having a high surface smoothness is used for a flat panel display having a surface of a type having a high surface smoothness. This is caused by water vapor and foreign matter entering from the peripheral portion and being sandwiched between the surface of the smooth display portion and the protective cover surface.

In order to solve these problems, a method has been proposed in which the surface of the sheet is processed to have a predetermined unevenness to prevent excessive adhesion between the surface of the display portion and the surface of the protective cover (see Patent Document 2). In particular, in large flat panel displays, the entire module is wrapped in a polyethylene or polypropylene bag, or wrapped around the entire surface from the display surface to the back to prevent water vapor from entering the periphery. A method such as fastening with an adhesive tape is used.
JP 2001-209039 A Japanese Patent No. 3825794

  Since the problems as described above are known, as a protective cover material for a relatively small module of about 50.8 cm (20 inches) or less, such as a liquid crystal module for a notebook personal computer or a monitor liquid crystal module for a desktop personal computer, A protective cover material of a type that does not have an adhesive material layer and in which the sheet surface is processed with a predetermined unevenness is widely used.

  However, with the recent increase in the size of flat panel display modules, it has become difficult to cope with conventional protection methods. For example, when protecting the surface of a large module display unit, a protective cover material of a type that does not have an adhesive layer is superimposed on the surface of the flat panel display unit, and an adhesive tape or the like is used at the end of the film. The method of fixing to is used. However, if the number of stopping points is small, the interval between the stopping points is widened, and the display surface and the protective cover material are greatly opened due to dripping due to the film's own weight, curling of the film, etc. It becomes easy for water vapor and foreign matter to enter.

  Further, during normal shipment, the protective cover material is stuck on the bezel part of the module, the module end face is faced down, the module is stood up by being inserted into a concavo-convex molded tray. When inserting into a concavo-convex molded tray, the gap between the surface of the display portion and the protective cover material is greatly opened, and troubles such as the molded convex portion of the tray being caught in the folded portion and the protective cover being peeled off have occurred.

  In contrast, methods such as simply increasing the number of points of adhesive tape or attaching the entire side with adhesive tape are economically disadvantageous, increase the number of work steps to be applied or removed, and bezel There are problems such as adhesive residue on the skin, which is not practical.

  On the other hand, in the method of attaching a polyethylene film or the like having a releasable adhesive layer on the surface in contact with the surface of the flat panel display unit to the surface of the flat panel display unit, as described above, the size of the flat panel display is small. However, it has not been adopted because there is a concern about the change in the optical color tone of the surface of the display section at the distribution stage.

  In addition, in particular for large flat panel display modules, the entire module is wrapped in a polyethylene or polypropylene bag, or a similar sheet, so that the surface of the display and the protective packaging material do not touch each other. Another packaging method is used, such as wrapping the entire circumference from the front surface to the back surface of the display unit and fastening it with tape.

  However, these methods cover portions other than the surface of the display portion that are not necessarily required, increase the packaging material, and are not economically efficient, but also increase the amount of waste after use. In addition, when wrapping the entire large flat panel display module, the load on the work surface such as the need to lift the module is large.

In addition, it is difficult to attach the display unit surface and the protective cover so as not to completely contact each other.
An object of the present invention is to provide a display part surface protective cover material for a flat panel display capable of improving workability.

  In order to solve the above problems, in the present invention, for example, attention is paid to the fact that the module thickness increases with an increase in the size of a flat panel display, and a protective cover material of a type having no adhesive layer is placed on the surface of the display unit. It was configured to be folded into the side surface of the flat panel display so as to cover at least a part of at least one of the side surfaces adjacent to the surface. It has been found that the workability when inserting into a concavo-convex molded tray, for example, from the folded side surface is remarkably improved.

  In addition, when the side to be inserted into the unevenly formed tray and the opposite side are similarly folded along the side of the flat panel display, when storing and transporting the flat panel display module in the state of being attached to the tray, It was discovered that the effect of preventing foreign matter from the top surface is greatly improved because the folded protective sheet becomes a roof.

  In order to achieve the above object, the invention according to claim 1 is a display unit surface protective cover material for a flat panel display, wherein the cover material is provided on a side surface adjacent to the display unit surface of the flat panel display. Among them, the end of the cover material is bent so as to cover at least a part of at least one side surface.

  According to a second aspect of the present invention, in the display unit surface protective cover material of the flat panel display according to the first aspect, the cover material has a 10-point average roughness of the surface roughness of the portion in contact with the display unit surface. It is a polymer film in the range of 0.5 μm to 20 μm.

  According to a third aspect of the present invention, in the display portion surface protective cover material of the flat panel display according to the second aspect, the polymer film is subjected to an antistatic treatment.

  According to a fourth aspect of the present invention, in the display panel surface protective cover material of the flat panel display according to the third aspect, the antistatic treatment is performed by kneading a permanent antistatic agent into a polymer material. It is characterized by.

  According to a fifth aspect of the present invention, in the display unit surface protective cover material for a flat panel display according to any one of the second to fourth aspects, the polymer film is made of a styrene resin. Features.

  ADVANTAGE OF THE INVENTION According to this invention, workability | operativity can be improved in the display part surface protection cover material of a flat panel display.

Hereinafter, an embodiment of a display surface protection cover material for a flat panel display embodying the present invention will be described with reference to FIG.
As shown in FIGS. 1 (a) and 1 (b), the display panel surface protective cover material (hereinafter referred to as "protective cover material") 11 of the flat panel display of the present embodiment has its upper edge and lower edge rearward, respectively. And bent portions 11a and 11b formed by bending substantially at right angles. A flat panel display module (hereinafter referred to as a “module”) 12 to which the protective cover material 11 is attached includes a display portion 13 and a metal bezel (fixed frame) 14 attached to the outer peripheral portion thereof. The protective cover material 11 is attached so as to cover the entire surface of the display unit 13. The bent portion 11 a of the protective cover material 11 is attached so as to cover a part of the upper surface 14 a among the side surfaces of the bezel 14 adjacent to the display portion 13. Similarly, the bent portion 11 b of the protective cover material 11 is attached so as to cover a part of the lower surface 14 b of the side surface of the bezel 14 adjacent to the display portion 13.

  The configuration for forming the bent portion 11b that covers the lower surface 14b of the bezel 14 of the protective cover material 11 is a shape in which the side (the lower side in the figure) to be inserted into the unevenly formed tray (not shown) is folded into the side surface of the module 12. Therefore, it is possible to prevent the tray from being caught on the molding convex portion.

  In addition, not only the side to be inserted into the unevenly formed tray but also the side opposite to the side (the upper side in the figure) is similarly bent and folded on the side surface of the module 12, so that the module 12 is mounted on the tray. When storing and transporting in the inserted state, the protective cover material 11 is formed into a roof shape by the bent portion 11a, so that foreign matter from the upper surface can be prevented.

  The bent portions 11a and 11b may be formed so as to cover at least a part of the outer peripheral surface of the bezel 14 (side surface of the module 12). However, if the width of the bent portions 11a and 11b is equal to or greater than the width of the bezel 14 (the thickness of the side surface of the module 12), the portion protruding from the side surface causes a new catch. Preferably there is. In this case, as shown in FIG. 3 to be described later, it is possible to solve the problem by bending the protruding portion to the back surface of the module 12 again. On the other hand, if the bent portions 11a and 11b are folded too short, the bent portions themselves are lifted and are caught when inserted into the tray, which is not preferable.

  A known method can be appropriately used as a method for forming the bent portions 11a and 11b, and is not particularly limited. For example, a ruled line process for forming perforations, a method for making a crease with a sharp die, a method for half-cutting, a method for making a crease using a heating bar, an ultrasonic welder, a high-frequency welder, and the like can be mentioned.

  The protective cover material 11 preferably has irregularities with a certain size or more on the surface in contact with the surface of the display unit 13. More specifically, the protective cover material 11 is preferably a polymer film in which the roughness of the surface in contact with the surface of the display unit 13 is in the range of 0.5 μm to 20 μm in terms of 10-point average roughness. More preferably, it is 0 μm to 10 μm. The 10-point average roughness is defined in JIS B0601.

  When the 10-point average roughness is less than 0.5 μm, the surface of the display unit 13 and the protective cover material 11 are in close contact with each other during distribution and storage under high-temperature and high-humidity conditions. The surface of the display unit 13 at the wet part has a problem of optical color change or the surface of the display unit 13 becomes extremely dirty after the wet part is dried. In addition, the effect of preventing damage caused by foreign matters mixed during transportation is reduced.

  On the other hand, when the 10-point average roughness exceeds 20 μm, the surface unevenness is large, and therefore, when the surface state of the module 12 is confirmed through the protective cover material 11, sufficient visual recognition cannot be performed. In addition, the surface of the display unit 13 of the flat panel display and the protective cover material 11 are rubbed due to transportation or the like, and the unevenness of the surface of the protective cover material 11 is scraped off.

  In the protective cover material 11 of the present invention, a known method can be appropriately used as a method for imparting unevenness to the surface. For example, an inorganic filler or a rubber component is mixed into a polymer material, and the film itself is fine. The method of making it have unevenness is mentioned. In addition, a method of transferring a concavo-convex shape by pressing a rubber roll or a metal roll having such a surface roughness when forming a polymer film, or a method of roughening the surface by corona treatment or the like can be mentioned.

  The film thickness of the protective cover material 11 is based on the function of protecting the surface of the display unit 13 of the flat panel display from scratches and the usage form in which only the end of the protective cover material 11 is stopped with the adhesive tape 15. If it is too thin, the protective effect cannot be obtained, and the problem arises that the protective cover material 11 hangs down and does not function. Therefore, the film thickness of 50 μm or more is necessary, and 75 μm or more is more preferable. On the other hand, when the film thickness is too thick, the flexibility and transparency required for the protective cover material 11 are impaired, and since it is not preferable in terms of economy from the usage form of being disposable, 500 μm or less is preferable, and 300 μm or less. Is more preferable.

Other than the above, any material that satisfies the requirements of the present invention can be used.
The protective cover material 11 has a role of protecting the surface of the display portion 13 of the flat panel display from dust, dust and the like, and preferably has a film subjected to antistatic treatment.

  The antistatic treatment of the present invention includes kneading an antistatic agent into a polymer material, a method of laminating the kneaded layer on the surface of the polymer film by coextrusion molding, and the like, A known treatment method such as laminating a film subjected to surface coating and antistatic treatment to a polymer film can be used.

  Further, the kind of the antistatic agent is not limited as long as it can be added to the polymer material. For example, various surfactants such as cation type, anion type, and nonionic type, urethane, acrylic, polyester, etc. Antistatic paint as binder, permanent antistatic agent made of alloyed hydrophilic polymer such as acrylic resin, conductive filler using carbon black and graphite, metal oxide such as zinc oxide and tin oxide, etc. Can be used.

  Among these, the permanent antistatic agent is not deteriorated in the antistatic performance under the low-humidity environment as seen in various surfactants, and the antistatic performance is not deteriorated by precipitation or wiping of the antistatic agent. It can be made transparent (visualization), which is difficult to realize with graphite or the like, and is also excellent in terms of economy as compared with metal oxides and the like, and is therefore preferable in the present invention.

  The polymer film that can be used in the present invention should be transparent to such an extent that the state of the surface of the display portion 13 of the flat panel display (whether there are no scratches or dust) can be visually recognized with the protective cover material 11 attached. It is not particularly limited as long as it is desirably a synthetic resin material having the characteristics. Examples thereof include a polyethylene film, a polypropylene film, a polystyrene film, a polyethylene terephthalate film, a polyvinyl alcohol film, a polyvinyl chloride film, a nylon film, a cellulose film, a polyacrylonitrile film, and a polymethacrylic acid film. Among these, a polystyrene film is preferable because it can easily form a surface irregular shape, has excellent bending workability, has a large sheet when enlarged, and is easy to handle.

  The permanent antistatic agents described above often have a refractive index in the range of about 1.49 to 1.53. In order to make the film transparent, the refractive index of the base polymer material is preferably permanently charged. The refractive index of the inhibitor must be within ± 0.02.

  The protective cover material 11 configured as described above is used, for example, in an assembly process or a transport process of a module having a smooth display section surface (the display section surface has an average roughness of 10 points or less of 0.1 μm or less). It is preferably used to prevent the adhesion, scratches, and dirt of dust, dust and the like to the surface. The protective cover material 11 is fixed on the outer peripheral surface of the bezel 14 using an adhesive tape 15 so as to cover the surface of the display unit. In FIG. 1 (b), the protective cover material 11 and the adhesive tape 15 are drawn greatly exaggerating their thickness in order to facilitate understanding. Further, it is assumed that the protective cover material 11 and the adhesive tape 15 are in contact with or bonded to the bezel 14.

Next, the embodiment will be described more specifically with reference to examples.
Example 1
70 parts by weight of a copolymer composed of a styrene monomer and a (meth) acrylic acid ester monomer (trade name: Clearpact TI300: manufactured by Dainippon Ink & Chemicals, Inc.) and a polyether ester amide (trade name: Pelestat NC7530: 30 parts by weight of Sanyo Chemical Co., Ltd.) was mixed with pellets. Next, it is put out from a sheet base along a matted metal cast roll having a 10-point average roughness of 8 μm, and one surface is pressed with an 8 μm silicone rubber roll with an average roughness of 10 points, and a surface unevenness processed sheet having a thickness of 100 μm. To form a film.

  The sheet is matched to the surface size of the display to be protected, and one end (upper end) of the long side and the side (lower end) opposite to the long side are bent backward and substantially at right angles as shown in FIG. The protective cover material 11 was produced by forming each. Next, the sheet is covered with the display unit 13, and the bent portions 11 a and 11 b are in contact with the upper surface 14 a and the lower surface 14 b of the bezel 14 on the side surface of the flat panel display module 12, respectively, using the adhesive tape 15. The part of was pasted and fixed.

(Example 2)
70 parts by weight of a copolymer composed of a styrene monomer and a (meth) acrylic acid ester monomer (trade name: Clearpact TI300: manufactured by Dainippon Ink & Chemicals, Inc.) and a polyether ester amide (trade name: Pelestat NC7530: 30 parts by weight of Sanyo Chemical Co., Ltd.) was mixed with pellets. Next, it is put out from a sheet base along a matted metal cast roll having a 10-point average roughness of 8 μm, and one surface is pressed with an 8 μm silicone rubber roll with an average roughness of 10 points, and a surface unevenness processed sheet having a thickness of 100 μm. To form a film.

  This sheet is matched to the surface size of the display to be protected, and one end (lower end) of the long side is bent backward and substantially at right angles as shown in FIG. 2 to form a bent portion 21a. Produced. Next, the sheet was covered with the display portion 13, and the bent portion 21 a was brought into contact with the lower surface 14 b of the bezel 14 on the side surface of the flat panel display module 12 and adhered with the adhesive tape 15. The upper end of the sheet was also fixed by sticking along the upper surface 14 a of the bezel 14 using the adhesive tape 15.

(Example 3)
70 parts by weight of a copolymer composed of a styrene monomer and a (meth) acrylic acid ester monomer (trade name: Clearpact TI300: manufactured by Dainippon Ink & Chemicals, Inc.) and a polyether ester amide (trade name: Pelestat NC7530: 30 parts by weight of Sanyo Chemical Co., Ltd.) was mixed with pellets. Next, it is put out from a sheet base along a matted metal cast roll having a 10-point average roughness of 8 μm, and one surface is pressed with an 8 μm silicone rubber roll with an average roughness of 10 points, and a surface unevenness processed sheet having a thickness of 100 μm. To form a film.

  This sheet is matched to the surface size of the display unit 13 to be protected as shown in FIG. 3, and one end (lower end) of the long side is bent at a substantially right angle on the side surface (rear side), and further wrapped around the back side of the module. The protective cover material 31 was produced by forming a bent portion 31a that was bent at a substantially right angle. Next, the sheet was covered with the display unit 13 while fitting the bent portion 31 a to the lower surface 14 b of the bezel 14. And the edge part of the bending part 31a was affixed on the back surface of the module 12 with the adhesive tape 15. FIG. Similarly, the upper end of the sheet was fixed by sticking along the upper surface 14 a of the bezel 14 using the adhesive tape 15.

<Workability>
The module of each example is packaged in a state where it is inserted and stood in a tray formed with unevenness. When any of the modules was inserted into a concavo-convex molded tray, a large opening was formed between the display surface and the protective cover material, so that no folded portion was formed. Then, the problem that the protective cover was peeled off by being caught by the forming convex portion of the tray did not occur.

<Adhesion of dust>
There were some dust deposits that could be discerned visually, and nothing that was not recognized. As a result, no dust was observed in any of the modules of each example.

<Close contact state>
The film was left in a high-temperature and high-humidity tank at a temperature of 40 ° C. and a humidity of 95% RH so that the film was on the upper surface, and the adhesion state between the film and the module display surface after 500 hours was visually observed. As a result, in Examples 1 to 3, no adhesion was observed.

From the above, it was confirmed that when the protective cover material of each example was used, the workability was excellent and the adhesion of dust could be prevented.
This embodiment has the following effects.

  (1) In the present embodiment, by forming a bent portion at the end of the protective cover material 11, it is possible to suppress the occurrence of an opening between the surface of the display portion and the protective cover material due to a curl of the film, a turn-up portion, or the like. it can.

  (2) In the present embodiment, the bent portion 11b that covers the lower surface 14b of the bezel 14 is formed. Therefore, since the side (the lower side in the figure) to be inserted into the unevenly formed tray (not shown) is folded into the side surface of the module 12, it is possible to prevent the tray from being caught on the molding convex portion. That is, workability is significantly improved.

  (3) In this embodiment, the shape (bending part 11a) which bend | folds and bends to the side surface of the module 12 so that the upper surface 14a of the bezel 14 may be covered was employ | adopted. Therefore, when the module 12 is stored and transported in a state of being attached to the tray, the protective cover material 11 becomes a roof shape by the bent portion 11a, so that foreign matter from the upper surface can be prevented.

  (4) Moreover, when attaching the protective cover material 11 to the module 12 by the bending part 11a or the bending part 11b, positioning work is easy. In this respect, workability is remarkably excellent.

  (5) In the present embodiment, the protective cover material 11 in contact with the surface of the display unit 13 is composed of a polymer film whose surface roughness is in the range of 0.5 μm to 20 μm with an average roughness of 10 points. Therefore, when the module is used in a state of covering the surface of the display unit with high surface smoothness, the protective cover material is prevented from coming into close contact with the surface of the display unit even during distribution and storage under high temperature and high humidity conditions. As a result, water vapor does not accumulate in the contact area between the protective cover material and the display surface, resulting in an optical color change on the wet display area or after the wet area has dried. The problem that the surface of the display unit is extremely dirty can be prevented.

  (6) In the present embodiment, the polymer film constituting the protective cover material 11 is preferably subjected to antistatic treatment. Therefore, the protective cover material can be prevented from adsorbing dirt.

  (7) In this embodiment, when the antistatic treatment is a kneading of a permanent antistatic agent into a polymer material, the display unit surface protective cover material stably adsorbs dirt even in a high humidity environment. Can be prevented. Further, the antistatic agent derived from the packaging material is less likely to contaminate the surface of the flat panel / display unit as compared with the surface coating method of the antistatic agent.

  (8) In this embodiment, the polymer material of the main component constituting the polymer film and the polymer material functioning as a permanent antistatic agent are mixed in a pellet and extruded from the sheet die along the metal cast roll. The polymer film was manufactured by forming a film. Accordingly, the antistatic treatment is less time-consuming than the antistatic treatment such as the surface coating of the antistatic agent after the production of the polymer film and the antistatic treatment such as bonding the film subjected to the antistatic treatment to the polymer film.

  (9) In this embodiment, a copolymer composed of a styrene monomer and a (meth) acrylic acid ester monomer is used as the main polymer material constituting the polymer film, and a polyether is used as the permanent antistatic agent. When ester amide is used, the dispersibility of the polymer material that functions as a permanent antistatic agent is improved.

The embodiment is not limited to the above, and may be embodied as follows, for example.
In the above embodiment, the bent portion 11b that covers the lower surface 14b of the bezel 14 and the bent portion 11a that covers the upper surface 14a are formed. However, the end portion of the cover material may be bent so as to cover at least one of the side surfaces adjacent to the surface of the display unit 13. For example, as shown in Example 2, the protective cover material 21 may be produced by bending only one end (lower end) of the long side as shown in FIG. 2 to form a bent portion 21a. Even in such a configuration, it is possible to prevent the tray from being caught on the forming convex portion. That is, workability is remarkably excellent. In addition, workability such as positioning can be remarkably improved, and an opening between the surface of the display unit and the protective cover material, generation of a turned-up part, and the like can be suppressed. In FIG. 2B, the protective cover material 21 and the adhesive tape 15 are greatly drawn with their thicknesses exaggerated for easy understanding. Further, it is assumed that the protective cover material 21 and the adhesive tape 15 are in contact with the bezel 14.

  ・ As shown in FIG. 3, in accordance with the surface size of the display to be protected, one end (lower end) of the long side is bent at a substantially right angle to the side surface, and the portion protruding from the rear end of the side surface goes further to the back side of the module. Thus, the protective cover material 31 may be produced by forming the bent portion 31a that is bent at a substantially right angle. In such a configuration, it is possible to further improve the effect of preventing the tray from being caught on the molding convex portion, the positioning effect, the opening between the display portion surface and the protective cover material, the occurrence of the turn-up portion, and the like. In FIG. 3 (b), the protective cover material 31 and the adhesive tape 15 are greatly drawn with their thicknesses exaggerated for easy understanding. Further, it is assumed that the protective cover material 31 and the adhesive tape 15 are in contact with the bezel 14.

  In particular, among flat panel display modules, especially small ones are becoming thinner, and there are those whose side thickness is small, but in this case, a sufficient folding length cannot be obtained. Further, a method of bending from the bent side surface so as to wrap around the back surface of the module is preferable.

  ・ The size of the module is not particularly limited. A relatively small module of about 50.8 cm (20 inches) or less, such as a liquid crystal module for a notebook computer or a monitor liquid crystal module for a desktop personal computer, or a relatively large size exceeding that. It may be applied to any of the modules.

  The width of the bent portion may be the same or different with respect to the long side direction of the module. In addition, the bending angle of the bent portion is substantially a right angle in the above-described embodiment, but is not limited thereto, and the bent portion is in contact with the side surface of the module due to resin elasticity when pasted with an adhesive tape. As long as it can be fixed, the bending angle of the bent portion may be smaller than 90 ° or larger than 90 °.

-Lubricants and processing aids used in general plastic processing may be added to the protective cover material. Moreover, you may add a stabilizer, a plasticizer, a coloring agent, etc. as needed.
-In the said embodiment, the kind of flat panel display is not specifically limited, The protective cover material which protects the display part surface of a liquid crystal module, The protective cover material which protects the display part surface of flat panel displays, such as a plasma display panel You may apply to.

Next, the technical idea that can be grasped from the embodiment will be described below.
(A) The display unit surface protective cover material of the flat panel display is covered on the display unit surface of the flat panel display, and the bent part is covered on the side surface adjacent to the display unit surface. A method for protecting a display portion of a flat panel display, characterized by being fixed with an adhesive tape.

The display part surface protection cover material of the flat panel display of this embodiment. (A) The perspective view at the time of attaching a protective cover material to a flat panel display. (B) The side view at the time of the protection cover material being assembled | attached to the flat panel display. As an example, a display panel surface protective cover material for a flat panel display. (A) The perspective view at the time of attaching a protective cover material to a flat panel display. (B) The side view at the time of the protection cover material being assembled | attached to the flat panel display. As an example, a display panel surface protective cover material for a flat panel display. (A) The perspective view at the time of attaching a protective cover material to a flat panel display. (B) The side view at the time of the protection cover material being assembled | attached to the flat panel display.

Explanation of symbols

  11, 21, 31, protective cover material, 12, flat panel display module, 11 a, 11 b, 21 a, 31 a, bent portion, 13, display portion, 14, bezel.

Claims (5)

  A display panel surface protection cover material for a flat panel display, wherein the cover material covers at least a part of at least one of the side surfaces adjacent to the display panel surface of the flat panel display. A display panel surface protective cover material for a flat panel display, characterized by bending.   2. The flat panel according to claim 1, wherein the cover material is a polymer film having a surface roughness of a portion in contact with the surface of the display unit in a range of 0.5 μm to 20 μm with an average roughness of 10 points.・ Surface protection cover material for display part of display.   3. The display unit surface protective cover material for a flat panel display according to claim 2, wherein the polymer film is subjected to an antistatic treatment.   4. The display part surface protective cover material for a flat panel display according to claim 3, wherein the antistatic treatment is performed by kneading a permanent antistatic agent into a polymer material.   The said polymer film consists of styrene resin, The display part surface protection cover material of the flat panel display as described in any one of Claims 2-4 characterized by the above-mentioned.

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