KR20110030221A - Light shielding tape structure and method of attaching fabricating light shielding tape to liquid crystal display device - Google Patents

Abstract

PURPOSE: A light shielding tape structure and a method of attaching a fabricating light shielding tape to a liquid crystal display device are provided to prevent the deterioration of image quality resulting from light leakage by attaching a shielding tape to an accurate position of a main support unit or a liquid crystal panel. CONSTITUTION: A method of attaching a fabricating light shielding tape to a liquid crystal display device comprises the steps of: arranging a reflection plate(128) at a lower portion of a lower cover(140); arranging main support units(125) on the both surfaces of the lower cover; placing a light guide plate on the reflection plate; placing an LED unit(152) on one surface of the light guide plate; arranging a dispersion sheet and an optical sheet on the light guide plate; and attaching the light shield tape between the main support units and the optical sheet.

Description

LIGHT SHIELDING TAPE STRUCTURE AND METHOD OF ATTACHING FABRICATING LIGHT SHIELDING TAPE TO LIQUID CRYSTAL DISPLAY DEVICE}

The present invention relates to a light shielding tape, and more particularly, to a light shielding tape structure and a method of attaching a light shielding tape to extend the protective film from the light shielding tape so that the light shielding tape can be automatically aligned with the liquid crystal display device when stored in a jig.

Recently, with the development of various portable electronic devices such as mobile phones, PDAs, and notebook computers, there is a growing demand for flat panel display devices for light and thin applications. Such flat panel displays have been actively researched, such as liquid crystal displays (LCDs), plasma display panels (PDPs), field emission displays (FEDs), and vacuum fluorescent displays (VFDs). Currently, liquid crystal displays (LCDs) are mainly in the spotlight for the realization of large-area screens.

The liquid crystal display is a transmissive display and displays a desired image on the screen by controlling the amount of light passing through the liquid crystal layer by the refractive index anisotropy of the liquid crystal molecules. Accordingly, in the liquid crystal display device, a back light, which is a light source passing through the liquid crystal layer, is provided for displaying an image. In general, the backlight can be classified into two types.

The first is a side type backlight that is provided on the side of the liquid crystal panel to provide light to the liquid crystal layer, and the second is a direct type backlight that provides light directly under the liquid crystal panel.

The side backlight may be installed on the side of the liquid crystal panel to supply light to the liquid crystal layer through the reflection plate and the light guide plate. Therefore, since the thickness can be made thin, it is mainly used in notebooks and the like which require a thin display device. However, the side backlight is difficult to apply to a large area liquid crystal panel because the lamp for emitting light is located on the side of the liquid crystal panel, it is difficult to obtain high brightness because light is supplied through the light guide plate. Therefore, there has been a problem that it is not suitable for the large-area liquid crystal panel for LCD TVs, which is in the spotlight recently.

The direct type backlight is used to manufacture a liquid crystal panel for an LCD TV since the light emitted from the lamp is directly supplied to the liquid crystal layer and can be applied to a large area liquid crystal panel as well as high brightness.

On the other hand, in recent years, as a lamp of the backlight, instead of a fluorescent lamp, a light source that emits light itself, such as a light emitting device (Light Emitting Device). Since the light emitting device emits R, G, and B monochromatic light, it has the advantage of good color reproduction and reduction of driving power when applied to the backlight.

1 is a cross-sectional view briefly illustrating a structure of a conventional liquid crystal display device having a backlight including the light emitting device as described above.

 As shown in FIG. 1, the liquid crystal display device includes a first substrate 1 and a second substrate 3 and a liquid crystal layer (not shown) therebetween to implement an image as a signal is applied from the outside. The first polarizing plate 12 and the second polarizing plate disposed on the liquid crystal panel 10 and the front and rear surfaces of the liquid crystal panel 10 to polarize light incident on the liquid crystal panel 10 and exiting from the liquid crystal panel 10. 14, an LED unit 52 provided with a light emitting device (LED) disposed on the lower side of the liquid crystal panel 10 and emitting light, and an LED unit disposed below the liquid crystal panel 10. The light guide plate 20 for guiding the light emitted from the light source 52 to the liquid crystal panel 10, and is provided between the liquid crystal panel 10 and the light guide plate 20 to be guided by the light guide plate 20 to provide a liquid crystal panel ( 10, an optical sheet 34 including a diffusion sheet and a prism sheet for diffusing and condensing the light supplied to the light, and the light guide plate 20 A main support part 25 disposed below the light guide plate 20 to support the liquid crystal panel 10, and light incident on the lower part of the light guide plate 20 to be incident to the liquid crystal panel 10. And a lower cover 40 to which the liquid crystal panel 10, the light guide plate 20, the optical sheet 34, the reflector 28, and the main support part 25 are assembled.

Between the jaw of the main support portion 25 on which the liquid crystal panel 10 is placed and the optical sheet 30, a first light shielding tape 50 is attached to the light emitted from the LED unit 52 and not incident to the light guide plate 20. The leakage between the main support portion 25 and the optical sheet 34 is prevented.

In addition, a second light blocking tape 55 is attached between the main support part 25 and the liquid crystal panel 10. In this case, the second light blocking tape 55 is formed along the entire circumference of the liquid crystal panel 10 to block a gap generated between the main support part 25 and the liquid crystal panel 10. Since the second light blocking tape 55 is made of an opaque material, light may be blocked by light leakage through a gap between the main support part 25 and the liquid crystal panel 10. In particular, the second light blocking tape 55 effectively blocks light from being emitted through the side surface of the liquid crystal panel 10 or propagated through the first polarizing plate 12 to the side surface of the liquid crystal display device, thereby degrading image quality. To prevent them.

2 is a view showing the second light blocking tape 55. As shown in FIG. 2, since the second light blocking tape 55 is disposed along the outer surface of the liquid crystal panel 10, the second light blocking tape 55 has a rectangular band shape, and protective films 57 and 58 are attached to both surfaces having adhesive strength. It is. When the protective films 57 and 58 are transferred to the second light blocking tape 55, the protective films 57 and 58 are attached to the adhesive surface to protect the adhesive force of the adhesive surface from being lowered.

The protective films 57 and 58 may have a rectangular shape or may have a band shape along the shape of the second light blocking tape 55. In the drawing, although the protective films 57 and 58 are formed to have a larger size than the second light blocking tape 55, the protective films 57 and 58 extend outside the second light blocking tape 55. 57, 58) for the purpose of indicating in the figure. The size of the protective films 57 and 58 is substantially similar to that of the second light blocking tape 55 so that the ends of the protective films 57 and 58 and the ends of the second light blocking tape 55 may coincide with each other.

Meanwhile, the handles 57a are formed on the protective films 57 and 58 attached to both surfaces of the second light blocking tape 55. The handle 57a is for applying a force when the operator separates the protective film 57 from the second light shielding tape 55. As shown in FIG. 2, in the conventional light shielding tape 55, the handle 57a is formed to extend from the protective film 57.

In the liquid crystal display device having the above configuration, the reflector plate 28, the LED unit 50, the diffusion sheet 32, the prism sheet 34, and the liquid crystal panel 10 are disposed on the lower cover 40 and the main support part 25. After assembling, the second light blocking tape 55 is attached between the main support portion 25 and the liquid crystal panel 10.

On the other hand, when the second light blocking tape 55 is attached, the second light blocking tape 55 should be attached at the correct position to prevent the light from leaking between the liquid crystal panel 10 and the main support part 25. . Therefore, when attaching the second light shielding tape 55, a jig is used as a means for fixing the second light blocking tape 55 at the correct position.

As shown in FIG. 3, the jig 60 has a plurality of walls 62 and a bottom 64 and has a box shape having an open top. The jig 60 is formed in almost the same size and shape as the liquid crystal display device to be manufactured, so that the liquid crystal display device can be positioned therein.

4 is a view illustrating attaching the second light blocking tape 55 in a state where the liquid crystal display device assembled in the jig 60 is disposed.

As shown in FIG. 4, first, the assembled liquid crystal display device is positioned inside the jig 60. At this time, the liquid crystal display device and the wall 62 of the jig 60 are spaced apart by a predetermined distance (x). The reason is that the liquid crystal display device and the jig may be used to smoothly store the assembled liquid crystal display device into the jig 60. This is because the friction force between the side surface of the liquid crystal display device and the wall 62 must be minimized by separating the wall 62 of the 60 from a predetermined distance.

However, when the liquid crystal display and the wall 62 of the jig 60 are separated by a predetermined distance (x) as described above, the following problem occurs.

That is, since the liquid crystal display element is spaced apart from the wall 62 of the jig 60 by a predetermined distance (x), the liquid crystal display element is accommodated in the jig 60 and then between the liquid crystal panel 10 and the main support part 25. When the second light blocking tape 55 is disposed on the second light blocking tape 55, the second light blocking tape 55 is separated from the original position by a distance x between the liquid crystal panel 10 and the wall 62 of the jig 60. It becomes possible. Typically, since the separation distance x is about 0.2 mm, the second light shielding tape 55 has its original position by the separation distance x between the liquid crystal panel 10 and the wall 62 of the jig 60. Since the second light shielding tape 55 is attached at a position deviated by a maximum error of 0.2 mm from the original position when light is attached from the original position, light leaks between the liquid crystal panel 10 and the main support portion 25 due to this error, and thus the image quality is reduced. This is a defect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and by attaching the light shielding tape to the correct position of the main support portion and the liquid crystal panel of the liquid crystal display device, the light shielding tape structure can prevent the light leakage from the liquid crystal display device and deteriorate the image quality. And a light shielding tape attaching method for a liquid crystal display device.

In order to achieve the above object, a method of attaching a light shielding tape of a liquid crystal display device according to the present invention includes the steps of accommodating the liquid crystal display device in a jig; Accommodating the light blocking tape having the first protective film attached to the jig to align the light blocking tape to the liquid crystal display device; And removing the first protective film attached to the shading tape, wherein the sides of the liquid crystal display device housed in the jig are spaced a certain distance from the wall of the jig, and the protective film attached to the shading tape has two shading tapes. Extending from the two sides of the protective film is in close contact with the wall of the jig is characterized in that the light-shielding tape is aligned with the liquid crystal display device.

Before storing the light blocking tape in the jig, the second protective film attached to the light blocking tape is removed so that the attachment surface of the light blocking tape is attached to the liquid crystal display device.

In addition, the light shielding tape structure according to the present invention is a light shielding tape having an adhesive attached to both sides; Protective films attached to both surfaces of the light-shielding tape; And an extension part formed on two sides of at least one protective film of the double-sided protective film and extending from two sides of the light shielding tape.

In the present invention, since the protective film of the shading tape extends from two sides of the shading tape, when the shading tape is accommodated in the jig, the two sides of the shading tape closely contact the wall of the jig so that the shading tape can be automatically aligned with the liquid crystal display device. Therefore, the light shielding tape can be attached to the correct position of the liquid crystal display device.

In addition, in the present invention, by dispersing the force when the protective film is separated from the light shielding tape by the extended area of the protective film, the main support portion and the liquid crystal panel attached to the light shielding tape can be prevented from flowing.

Hereinafter, a liquid crystal display device according to the present invention will be described in detail with reference to the accompanying drawings.

Typically, the liquid crystal display device is assembled by a lower cover and an upper cover. In the case of the liquid crystal display device having such a structure, a part of the main support part and the liquid crystal panel is covered by the upper cover, so that a gap between the main support part and the liquid crystal panel is prevented. This leakage phenomenon does not occur. However, in recent years, small electronic devices such as mobile communication devices such as mobile phones and portable multi-media players that support video have liquid crystals in which the top cover is not assembled for size reduction, weight reduction, and aesthetics. The display device is applied. In such a liquid crystal display device, light leaks into a gap between the main support part and the liquid crystal panel, thereby causing a problem.

Therefore, the present invention is mainly applied to liquid crystal display devices employed in such small electronic devices, but the present invention is not limited to such small liquid crystal display devices. That is, the present invention may be applied to all kinds of liquid crystal display devices that are not provided with the top cover.

5 is a view showing the structure of a second light blocking tape according to the present invention.

As shown in FIG. 5, since the second light blocking tape 155 is attached to the outer region of the liquid crystal panel, the second light blocking tape 155 has a rectangular band shape having a substantially set width.

In this case, the second light blocking tape 155 may vary in size or shape according to the size or shape of the liquid crystal panel and the size or shape of the backlight. For example, when the liquid crystal panel is formed in a rectangular shape, the second light blocking tape 155 is also made of a rectangular band having a set width, and when the liquid crystal panel is formed in a square shape, the second light blocking tape 155 is also formed in a square shape having a set width. It consists of a band. In addition, the width of the second light blocking tape 155 may also vary depending on the structure of the liquid crystal display device.

The second light blocking tape 155 is formed by coating an acrylic adhesive on both sides of an opaque FET film such as black or white of polyethylene terephtalate (PET) material and having a thickness of several tens of μm. First and second protective films 157 and 158 are formed on both surfaces of the second light blocking tape 155, and first and second extension parts 157b and 157c are formed on the first protection film 157. do.

When the first and second protective films 157 and 158 carry the second light blocking tape 155, the second and second protective films 157 and 158 may prevent the foreign matter from adhering to the second light blocking tape 155 or the adhesive strength of the adhesive may be lowered. It is attached to both surfaces of the light shielding tape 155, and when the second light shielding tape 155 is actually attached, the first and second protective films 157 and 158 are removed by the adhesive force of the adhesive.

The first and second protective films 157 and 158 may be formed in a quadrangular shape to which the band-shaped second light blocking tape 155 is attached, and may be formed in a band shape like the second light blocking tape 155.

Two sides of the first protective film 157 are formed with a first extension part 157b and a second extension part 157c extending from the end of the second light shielding tape 155 by a set distance t, respectively. A handle 157a is formed at one side of the first extension part 157b. At this time, the width of the extension portion 157b is preferably formed to about 0.2mm. The handle 157b may be formed in the second extension part 157c.

As described above, forming the first extension part 157b and the second extension part 157c on the first protective film 157 is to attach the second light blocking tape 155 to a desired precise position of the liquid crystal display. A method of attaching the second light shielding tape 155 to the liquid crystal display device is as follows.

FIG. 6 is a view illustrating a method of attaching the second light blocking tape 155 shown in FIG. 5 to the liquid crystal display.

As shown in FIG. 6, first, the reflective plate 128 is disposed below the lower cover 140, and the main support 125 is disposed on both sides of the lower cover 140, and then the light guide plate is disposed on the reflective plate 128. Place 120. Subsequently, an LED unit 152 including an LED emitting light to one side or both sides of the light guide plate 120 and incident to the light guide plate 120 is disposed and the LED of the LED unit 152 is disposed on the light guide plate 120. After the light is emitted, an optical sheet 134 including a diffusion sheet and a prism sheet for diffusing and condensing the light guided by the light guide plate 120 is disposed, and thereafter, an optical sheet 134 is disposed between the main support 125 and the optical sheet 134. The primary light-emitting tape 150 is attached. Then, the liquid crystal panel 110 is disposed on the optical sheet 134 to assemble the liquid crystal display device 100.

After the liquid crystal display device 100 is assembled as described above, the assembled liquid crystal display device 100 is accommodated in the jig 160.

As shown in FIG. 7A, the jig 160 includes a bottom surface 164 and a wall 162, and an upper portion thereof is opened to accommodate the liquid crystal display device 100 assembled therein.

In addition, as shown in FIG. 7B, the jig 160 may have a pillar 163 formed only at the corners of the bottom surface 164. In this case, the pillars 163 may be disposed at two surfaces perpendicular to each other so that the corners of the liquid crystal display device 100 or the edges of the second light blocking tape 155 are the pillars 163 when the liquid crystal display device 100 is accommodated. It comes in close contact with two sides of. At this time, the two sides of the bottom surface 164 is formed longer than the two sides of the liquid crystal display device 100 is accommodated so that the overall area of the bottom surface 164 is formed larger than the area of the liquid crystal display device 100.

As shown in FIG. 6, after storing the liquid crystal display device 100 assembled in the jig 160, the second light blocking tape 155 is stored in the jig 160 and positioned above the liquid crystal display device 100. Let's do it. In this case, since the second protective film 158 of the second light blocking tape 155 is removed and stored in the jig 160, adhesion of the second light blocking tape 155 to which the second protective film 158 is attached is performed. The surface is attached to the main support part 125 and the liquid crystal panel 110.

When the liquid crystal display device 100 is accommodated in the jig 160, the walls of the liquid crystal display device 100 and the jig 160 are spaced a predetermined distance (x) in order to accommodate the liquid crystal display device smoothly without friction. On the other hand, as shown in Figure 5, the first protective film 157 attached to the second light shielding tape 155, the first extension portion extending from the two sides of the second light shielding tape 155, the set distance (t) 157b and the second extension portion 157c are formed.

At this time, the first extension of the first protective film 157 attached to the second light-shielding tape 155 and having a separation distance x between the liquid crystal display 100 and the wall of the jig 160 is about 0.2 mm. Since the length t of the second extension part 157c and the second extension part 157c is about 0.2 mm, when the second light shielding tape 155 to which the first protective film 157 is attached is stored in the jig 160, FIG. 6. As shown in FIG. 8, the first extension part 157b and the second extension part 157c of the first protective film 157 are in close contact with the wall of the jig 160, and the second light blocking tape 155 is correctly The liquid crystal display 100 is attached to the area between the main support part 125 and the liquid crystal panel 110. That is, after the second light blocking tape 155 is accommodated in the jig 160, the first extension part 157b and the second extension part 157c of the first protective film 157 may be disposed in the jig 160. When the second light blocking tape 155 is automatically aligned with the liquid crystal display device 100 by being in close contact with both walls, the second light blocking tape 155 can be easily attached to a desired position of the liquid crystal display device 100 easily. .

As described above, after attaching the second light blocking tape 155 to the liquid crystal display device 100, an operator grasps the handle 157a of the first protective film 157 and applies a force to the first protective film 157. Is separated from the second light shielding tape 155.

Meanwhile, the first extension part 157b and the second extension part 157c of the first protective film 157 of the second light blocking tape 155 align the second light blocking tape 155 in the jig 160. It does not only play a role but also to securely attach the second light blocking tape 155 to the liquid crystal display device 100. This will be described below.

When the first protective film 157 is separated from the second light blocking tape 155, the first extension part 157b and the second extension part 157c of the first protection film 157 may be attached to the handle 157a. Forces applied are dispersed in the extension 157b.

In the conventional shading tape, when the edges of the sides of the first protective film and the second shading tape coincide with each other, the force applied to the handle is applied to the handle when the first protective film is separated from the second shading tape. The protective film is concentrated in an area adjacent to the handle so that the main support portion and the liquid crystal panel to which the second light shielding tape is attached flow by the force.

However, in the present invention, since the first extension part 157b and the second extension part 157c are formed in the first protective film 155, the first extension part 157b or the second extension part 157c may be used. When the first protective film 155 is separated by applying a force upward to the formed handle 157a, the force applied to the handle 157a is first applied to the first extension part 157b or the second formed with the handle 157a. Is applied to the extension 157c. In this case, since the first extension part 157b or the second extension part 157c is not bonded to the second light shielding tape 155, the force applied to the handle 157a is directly directed to the second light shielding tape 155. It is not transmitted and is applied through the first extension part 157b or the second extension part 157c.

As such, when the force is transmitted to the second light shielding tape 155 through the first extension part 157b or the second extension part 157c, the force is transmitted to the first extension part 157b or the second extension part ( 157c) uniformly dispersed throughout. In this case, since the length of the first extension part 157b or the second extension part 157c is the same as the entire length of the corresponding side of the second light shielding tape 155, it is applied to the handle 157a and thus the first extension part 157b. Or the force applied to the light shielding tape 155 through the second extension portion 157c is uniformly sprayed over the entire side of the second light shielding tape 155. Thus, the force per unit area of the second shading tape 155 is significantly reduced compared to the force initially applied to the handle 157a, which indicates that the impact applied to the second shading tape 155 in the corresponding area is reduced. It means.

That is, the force for separating the first protective film 157 from the second light blocking tape 155 is transmitted to the first protective film 157 as it is, and the first protective film 157 is removed from the second light blocking tape 155. The separation is performed smoothly, but the impact is reduced, so that a force is applied upwardly to the main support part 125 and the liquid crystal panel 110 bonded to the second light shielding tape 155 so that the main support part 125 and the liquid crystal panel 110 are applied. You can prevent it from being heard.

Meanwhile, in FIG. 5, the first protective film 157 is larger than that of the light shielding tape 155, but this is for clearly showing the first protective film 157. Except for the region where the first extension part 157b and the second extension part 157c are formed, the first protective film 157 is the same size as the light shielding tape 155 or finer than the light shielding tape 155. It would be desirable to form them in large sizes.

On the other hand, as shown in Figure 5, the liquid crystal display device is composed of a liquid crystal panel 110 to implement a large image and the backlight for supplying light to the liquid crystal panel 110.

The liquid crystal panel 110 includes a first substrate 111 and a second substrate 113 made of a transparent material such as glass, and a liquid crystal layer disposed between the first substrate 111 and the second substrate 113. Not).

Although not shown in the drawing, a plurality of gate lines and data lines are formed on the first substrate 111 to be arranged horizontally and horizontally to define a plurality of pixel regions, and thin film transistors, which are switching elements, are formed in each pixel region. The formed pixel electrode is formed on the pixel region. The thin film transistor may include a gate electrode connected to a gate line, a semiconductor layer formed by stacking amorphous silicon, etc. on the gate electrode, a source electrode and a drain electrode formed on the semiconductor layer and connected to the data line and the pixel electrode. .

The second substrate 113 is a color filter composed of a plurality of sub-color filters for implementing colors of red (R), green (G), and blue (B), and the sub-color filter. A black matrix for dividing and blocking light passing through the liquid crystal layer, and a transparent common electrode for applying a voltage to the liquid crystal layer.

The first substrate 111 and the second substrate 113 configured as described above are joined to face each other by a sealant (not shown) formed on the outer side of the image display area to form a liquid crystal panel. The first substrate 111 ) And the second substrate 113 are bonded through a bonding key (not shown) formed on the first substrate 111 or the second substrate 113.

Meanwhile, the liquid crystal panel 110 has a pixel electrode formed on the first substrate 111 and a common electrode formed on the second substrate 113 as described above, so that the liquid crystal layer 110 is perpendicular to the surface of the first substrate 111. TN mode (Twisted Nematic mode) may be applied, and the common electrode and the pixel electrode are formed parallel to each other on the first substrate 111 to apply an electric field horizontal to the surface of the first substrate 111 to the liquid crystal layer. It may also be an IPS mode (In-Plane Switching mode).

A first polarizing plate 116 and a second polarizing plate 118 are attached to the first substrate 111 and the second substrate 113, respectively, to polarize light input and output to the liquid crystal panel 110 to implement an image. .

The LED unit 152 is mounted with a plurality of LEDs to supply light to the light guide plate 120 located on the side, and in the light guide plate 120 the incident light is totally reflected inside the upper surface of the light guide plate 120 at an angle greater than or equal to a threshold value. When light is incident, the light is refracted and supplied to the liquid crystal panel 110. In this case, the LED may be an R, G, B LED or a white LED that emits white light of R (Red), G (Green), B (Blue) monochromatic light.

When the LED emitting monochromatic light is arranged, the monochromatic light LEDs of R, G, and B are alternately arranged at regular intervals, and the monochromatic light emitted from the LED is mixed with white light and then supplied to the liquid crystal panel 110 to emit white light. When the LED device is provided, the plurality of LED devices are arranged at a predetermined interval to supply white light to the liquid crystal panel 110.

In this case, the white light LED element is composed of a blue LED emitting blue light and a phosphor absorbing blue monochromatic light to emit yellow light, and the blue monochromatic light output from the blue LED and the yellow monochromatic light emitted from the phosphor are mixed to form a white light. It is supplied to the panel (110).

The light guide plate 120 is used to guide the light input from the LED unit 150 to the liquid crystal panel 110. The light incident on one side of the light guide plate 120 is reflected from the top and bottom surfaces of the light guide plate 120, and thus the other side surface thereof. After propagating up to and outputting to the outside of the light guide plate 120. In this case, the light guide plate 120 is formed of a rectangular parallelepiped, and a pattern or a groove may be formed on the bottom surface of the light guide plate 120, and a reflecting plate 140 is provided below the light guide plate 120 to provide a light guide plate 120. ) Reflects light that is not reflected from the lower surface (angle incident to the lower surface above the critical angle).

The optical sheet 134 is composed of a diffusion sheet and a prism sheet. The diffusion sheet is intended to diffuse the light output from the light guide plate 120 to make the brightness constant. The diffusion sheet is manufactured by distributing a spherical seed made of an acrylic resin on a base film made of polyester (PET). The light output from the light guide plate 120 is diffused from the spherical seed so that the brightness of the light output is uniform. One sheet may be used for this diffusion sheet or a plurality of sheets may be used.

The prism sheet is provided on the diffusion sheet to collect light diffused from the diffusion sheet, and is manufactured by forming a regular prism with an acrylic resin on a base film mainly made of polyester (PET). In this case, the prism is an isosceles triangle extending in the x-direction and the y-direction, and the light is incident perpendicularly to the surface of the liquid crystal panel 110 by condensing the light in the x- and y-directions.

As described above, in the present invention, the protective film formed on the second light shielding tape is formed larger than the light shielding tape so as to extend a predetermined distance from two sides of the light shielding tape so that the second light shielding tape is attached to the liquid crystal display device. The light shielding tape can be easily aligned with the liquid crystal display so that the second light shielding tape can be attached at a predetermined position.

Meanwhile, in the above detailed description, the shapes of the second light shielding tape and the protective film are limited to specific shapes, but the present invention is not limited to these specific shapes. The shape and size of the second light blocking tape may be any shape or size as long as it can block light leakage along the outer portion of the liquid crystal panel, and the shape and size of the protective film may vary depending on the shape and size of the second light blocking tape. will be. In other words, other examples or modifications of the present invention can be easily created by anyone in the technical field to which the liquid crystal display device using the basic concept of the present invention belongs.

1 is a cross-sectional view showing the structure of a conventional liquid crystal display device.

2 is a view showing a structure of a second light blocking tape of a conventional liquid crystal display device.

3 is a view showing a structure of a conventional jig used for attaching a second light shielding tape to a liquid crystal display device.

4 is a view showing that a liquid crystal display device is conventionally housed in a jig.

5 is a view showing a structure of a second light shielding tape according to the present invention.

6 is a view showing that the liquid crystal display device is accommodated in the jig according to the present invention.

7A and 7B show the structure of the jig of the present invention used for attaching the second light shielding tape to the liquid crystal display device.

8 is a view showing that a liquid crystal display element and a second light shielding tape are accommodated in a jig.

Claims (9)

Storing the liquid crystal display in the jig; Accommodating the light blocking tape having the first protective film attached to the jig to align the light blocking tape to the liquid crystal display device; And Comprising the step of removing the first protective film attached to the light-shielding tape, The sides of the liquid crystal display device housed in the jig are spaced apart from the wall of the jig by a certain distance, and the protective film attached to the light shielding tape extends from the two light shielding tapes so that the two extended sides of the protective film adhere to the wall of the jig to shield the light. A method of attaching light shielding tape to a liquid crystal display device, wherein the tape is aligned with the liquid crystal display device. The method of claim 1, wherein the removing of the protective film comprises applying a force to a handle formed on the protective film to separate the protective film from the shading tape. The light blocking of the liquid crystal display device according to claim 1, wherein the second protective film attached to the light shielding tape is removed so that the attachment surface of the light shielding tape contacts the liquid crystal display device before the light shielding tape is stored in the jig. How to attach tape The method of claim 1, wherein the jig is formed in a box shape having the same shape as that of the liquid crystal display device. Shading tapes having adhesives attached to both sides; Protective films attached to both surfaces of the light-shielding tape; And A light shielding tape structure formed on two sides of at least one protective film of the double-sided protective film, and extending from two sides of the light shielding tape. 6. The light shielding tape structure according to claim 5, wherein the light shielding tape has a rectangular band shape. 6. The light shielding tape structure according to claim 5, wherein the protective film has the same size as the light shielding tape. 6. The light shielding tape structure according to claim 5, wherein the extension portion extends 0.2 mm from two sides of the light shielding tape. 6. The light shielding tape structure of claim 5, further comprising a handle formed on the extension part to apply a force to the protective film.

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