KR20120076973A - Light shielding tape and reflecting plate of flat panel display device - Google Patents

Abstract

PURPOSE: A light blocking tape for a flat display device and a reflective plate thereof are provided to prevent a light blocking tape from being separated from an FPCB of an LED assembly when release paper is removed from the light blocking tape. CONSTITUTION: A release paper(163) has a size corresponding to the size of a light blocking tape(161). The release paper is attached to an upper adhesive layer of the light blocking tape. A protrusion portion(163a) is formed on one side of one edge of the release paper. A first length of a first line of a cutting line(163b) is longer than a length which can be punched. The first length of the first line is between 0.6mm and 0.9mm.

Description

LIGHT SHIELDING TAPE AND REFLECTING PLATE OF FLAT PANEL DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light shielding tape capable of blocking light leakage and a reflecting plate for providing light passing through a light guide plate to a liquid crystal panel in a liquid crystal display device.

In line with the recent information age, the display field has also been rapidly developed, and a liquid crystal display device (FPD) is a flat panel display device (FPD) having advantages of thinning, light weight, and low power consumption. LCD, plasma display panel device (PDP), electroluminescence display device (ELD), field emission display device (FED), etc. : It is rapidly replacing CRT.

Among them, LCDs are excellent in moving image display and are most actively used in notebooks, monitors, TVs, etc. due to high contrast ratio. The LCDs are devices that do not have their own light emitting elements. It requires a light source.

As a result, a backlight unit having a lamp is provided on the rear side to irradiate light toward the front of the liquid crystal panel, thereby realizing an image of identifiable luminance.

On the other hand, a cold cathode fluorescent lamp (Cold Cathode Fluoresent Lamp), an external electrode fluorescent lamp (External Electrode Fluoresent Lamp), and a light emitting diode (LED) are used as the light source of the backlight unit.

Among them, LEDs are particularly widely used as display light sources having features such as small size, low power consumption, and high reliability.

1 is a front view of a liquid crystal display module without a liquid crystal panel, and FIG. 2 is a cross-sectional view of the liquid crystal display module of FIG. 1.

As illustrated, the liquid crystal display module 10 includes a backlight unit 20, a support main 30, and a cover bottom 50. The liquid crystal display module 10 shows a state before the liquid crystal panel (not shown) is assembled on the backlight unit 20.

The backlight unit 20 includes an LED assembly 29 arranged along at least one edge length direction of the support main 30, a white or silver reflecting plate 25 seated on the cover bottom 50, and a reflecting plate ( A light guide plate 23 mounted on 25 and a plurality of optical sheets 21 interposed thereon are included.

The LED assembly 29 is configured at one side of the light guide plate 23, and includes a plurality of LEDs 29a emitting light and a flexible printed circuit board 29B on which the LEDs 29a are mounted.

The reflector 25 is positioned on the rear surface of the light guide plate 23 to reflect light passing through the rear surface of the light guide plate 23 toward the liquid crystal panel (not shown).

The light guide plate 23 allows a surface light source to be provided to a liquid crystal panel (not shown) through light incident from each of the plurality of LEDs 29a of the LED assembly 29.

The backlight unit 20 is surrounded by a support frame 30 having a rectangular frame shape, and a cover bottom 50 covering the rear surface of the backlight unit 20 is coupled from the rear to support the support main 30. Are combined.

The light shielding tape 61 for preventing light leakage is attached to the upper surface of the backlight unit 20.

The light shielding tape 61 corresponds to a rectangular frame-shaped double-sided adhesive tape having a central portion open to cover the four edges of the top surface of the backlight unit 20. The adhesive layer of the light blocking tape 61 protects the adhesive layer. A release paper (release paper) 63 is provided, whereby the light shielding tape 61 is attached to the top surface of the backlight unit 20 with the release paper provided.

The release paper 63 is removed from the light blocking tape 61 when a liquid crystal panel (not shown) is attached to the upper portion of the backlight unit 20.

Here, the release paper 63 has a rectangular plate shape corresponding to the size of the light shielding tape 61, and a protrusion 63a is formed at one side of one edge to remove the release paper 63 from the light shielding tape 61. Make it easy.

Hereinafter, the case where the release paper is removed from the shading tape and the case where the release paper is removed from the shading tape will be described with reference to the drawings.

FIG. 3 is a diagram illustrating a peeling force distribution of release paper in the liquid crystal display module of FIG. 1, and FIGS. 4A and 4B are views illustrating an example of removing the release paper from the light-shielding tape of FIG. 2. FIG. 5B is a diagram illustrating a case where the release paper is removed in FIG. 2.

As shown in FIG. 3, the force for removing the release paper 63 from the light-shielding tape 61, that is, the distribution W1 of the release force, is based on the protrusion 63a of the release paper 63. Although the peeling force of the center of the protrusion part 63a is the largest and peeling force decreases toward both edges from the center of the release paper 63 protrusion part 63a, although the peeling force decreases to the edge of the release paper 63 in which the protrusion part 63a was formed as a whole, It can be seen that the peel force is distributed.

Here, when the release paper 63 is removed from the shading tape 61 through the protruding portion 63a of the release paper 63, the adhesion force F1 between the release paper 63 and the shading tape 61 is applied to the shading tape ( 61) is greater than the adhesion force F2 between the FPCB 29b of the LED assembly 29 or the adhesion force F3 between the FPCB 29b of the LED assembly 29 and the support main 30 (F1> F2 or F1). > F3), as shown in FIG. 4A, the release paper 63 and the light shielding tape 61 are held together (F1> F2, F2 <F3), or as shown in FIG. 4B. And the FPCB 29b of the light shielding tape 61 and the LED assembly 29 are brought up together (when F1? F2> F3).

Thus, the lifting phenomenon is generated even when the pressing operation for pressing the upper part of the light incident portion where the LED assembly 29 is located during the backlight unit 20 assembly process is not performed normally.

As a result, as shown in FIG. 5A, a defect in which the LED assembly 29 is inclined is generated, such that light leakage occurs by changing the direction B1 of the light emitted from each of the plurality of LEDs 29a of the LED assembly 29. 5B, some of the lights B2 emitted from each of the plurality of LEDs 29a of the LED assembly 29 are generated due to a failure in which the LED assembly 29 falls from the support main 30. There is a problem that is directly incident to the optical sheets (21).

The present invention for solving the above problems, the release paper provided on the shading tape to be more easily removed to prevent the lifting phenomenon that the FPCB of the shading tape or the shading tape and the LED assembly is lifted when removing the release paper. It is a first object to provide a light shielding tape for a display device.

It is also a second object of the present invention to provide a reflecting plate for a flat panel display device capable of removing the protective sheet provided in the reflecting plate with less force.

In order to achieve the above object, according to the present invention, in a light shielding tape for a flat panel display device positioned between a liquid crystal panel and a backlight unit, the light shielding tape has a size corresponding to the size of the light shielding tape, and thus, an upper portion of the light shielding tape. A release paper attached to the adhesive layer and having a protrusion, wherein the release paper has a first length and a first end of the first line extending along the first protrusion edge line among the first and second protrusion edge lines of the protrusion. It characterized in that the cutting line having a second line of the second length by bending at a right angle toward the second protruding edge line.

The cutting line is characterized in that the 'b' shape or '┌' shape.

The first length of the first line is characterized in that it has a range of 0.6mm to 0.9mm.

Meanwhile, in the reflective plate for a flat panel display device included in a backlight unit, the reflective plate has a size corresponding to the size of the reflective plate, is attached to the rear surface of the reflective plate, and includes a protective sheet having a protrusion, and the protective sheet includes the protective sheet. A first line of a first length extending along the first protrusion edge line among the first and second protrusion edge lines of the protrusion and a second line having a second length having the second line bent at a right angle toward the second protrusion edge line at the end of the first line. It is characterized in that the cutting line is provided.

The cutting line is characterized in that the 'b' shape or '┌' shape.

The first length of the first line is characterized in that it has a range of 0.6mm to 0.9mm.

According to the light-shielding tape and the reflecting plate for a flat panel display device according to the present invention, the peeling paper or the protective sheet can be more easily removed by forming a cutting line on the release paper provided on the light-shielding tape or the protective sheet provided on the reflecting plate.

In particular, by forming a cutting line on the release paper, it is possible to remove the release paper even with a low peeling force.When removing the release paper from the shading tape, it prevents the lifting phenomenon that the shading tape or the shading tape and the FPCB of the LED assembly are lifted together. The occurrence can be eliminated.

1 is a front view of a liquid crystal display module without the liquid crystal panel.
FIG. 2 is a cross-sectional view of the liquid crystal display module of FIG. 1.
3 is a view illustrating a distribution of peeling force of release paper in the liquid crystal display module of FIG. 1.
4A and 4B illustrate an example of removing the release paper from the light shielding tape of FIG. 2.
5A and 5B are views illustrating an example of a liquid crystal display module in which release paper is removed in FIG. 2.
6 is an exploded perspective view of a liquid crystal display module according to an exemplary embodiment of the present invention.
7 is a view showing a light shielding tape and a release paper attached thereto according to a first embodiment of the present invention.
FIG. 8 is a view showing a distribution of peeling force of release paper in the liquid crystal display module before the liquid crystal panel is attached according to an exemplary embodiment of the present invention.
9 is a cross-sectional view of a liquid crystal display module before the liquid crystal panel is attached according to an embodiment of the present invention.
10 is a view showing a reflective plate and a release paper attached thereto according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The light shielding tape or reflecting plate according to the present invention is a liquid crystal display device (LCD), a plasma display panel device (PDP), an electroluminescence display device (ELD), an field emission display device ( Applicable to a flat panel display device (FPD) such as a field emission display device (FED), the following will be described with an example of a liquid crystal display device.

6 is an exploded perspective view of a liquid crystal display module according to an exemplary embodiment of the present invention.

As shown in FIG. 6, the liquid crystal display device module 100 includes a liquid crystal panel 110, a backlight unit 120, a support main 130, a cover bottom 150, and a top cover 140.

First, the liquid crystal panel 110 plays a key role in image expression and includes a first substrate 112 and a second substrate 114 bonded to each other with the liquid crystal layer interposed therebetween.

At this time, although not shown in the drawings under the premise of an active matrix method, a plurality of gate lines and data lines intersect each other and a pixel is defined on an inner surface of the first substrate 112, which is commonly referred to as a lower substrate or an array substrate. Thin film transistors (TFTs) are provided at the intersections of the transistors and are connected one-to-one with the transparent pixel electrodes formed at each pixel.

In addition, the inner surface of the second substrate 114 called the upper substrate or the color filter substrate may correspond to each pixel, for example, a color filter of red (R), green (G), and blue (B) color, and each of them. A black matrix covering the non-display elements such as gate lines, data lines, and thin film transistors is provided. In addition, a transparent common electrode covering them is provided.

A polarizer (not shown) for selectively transmitting only specific light is attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

Also, although not shown in the drawing, a printed circuit board may be provided at one edge of the liquid crystal panel 110 through a connection member such as a flexible circuit board or a tape carrier package (TCP).

Accordingly, in the liquid crystal panel 110 having the above-described structure, when the thin film transistor selected for each gate line is turned on by the on / off signal of the gate driver circuit which is scanned and transmitted, the signal voltage of the data driver circuit is applied to the corresponding pixel through the data line. The direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode.

In addition, the liquid crystal display module 100 according to the present invention is provided with a backlight unit 120 for supplying light from its rear surface such that the difference in transmittance of the liquid crystal panel 110 is expressed to the outside.

The backlight unit 120 includes an LED assembly 129, a white or silver reflecting plate 125, a light guide plate 123 mounted on the reflecting plate 125, and a plurality of optical sheets 121 interposed thereon. It includes.

The LED assembly 129 described above is located at one side of the light guide plate 123 so as to face the light incident part of the light guide plate 123. The LED assembly 129 includes a plurality of LEDs 129a and a plurality of LEDs 129a. It includes a FPCB (129b) that is mounted at a predetermined interval apart.

The light guide plate 123 evenly spreads the light incident from the plurality of LEDs 129a to a wide area of the light guide plate 123 while propagating through the light guide plate 123 by a plurality of total reflections to provide a surface light source to the liquid crystal panel 110. .

The light guide plate 123 may include a pattern of a specific shape on the rear surface to supply a uniform surface light source. The pattern may be configured in various ways such as an elliptical pattern, a polygonal pattern, a hologram pattern, and the like to guide light incident into the light guide plate 123. The lower surface of the light guide plate 123 may be formed by a printing method or an injection method.

The reflective plate 125 is positioned on the rear surface of the light guide plate 123, and reflects light passing through the rear surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the brightness of the light.

The plurality of optical sheets 121 on the light guide plate 123 include a diffusion sheet, at least one light collecting sheet, and the like, and diffuse or collect light passing through the light guide plate 123 to be more uniform with the liquid crystal panel 110. Let the surface light source enter.

Here, the rear surface of the LED assembly 129, the FPCB 129b of the backlight unit 120, and one side of the edge of the support main 30 are attached and fixed to each other through a double-sided adhesive material (not shown).

A light shielding tape 161 is disposed between the liquid crystal panel 110 and the backlight unit 120 to prevent light leakage. The light shielding tape 161 includes a release paper on an upper adhesive layer of the light shielding tape 161. The ridge is attached to the top surface of the backlight unit 120.

In more detail, the light shielding tape 161 includes a light shielding layer, an adhesive layer, and a release paper composed of PET resin and black ink for light shielding of light, and the light shielding tape 161 according to the present invention is a double-sided adhesive tape. The first adhesive layer is positioned above the light-shielding layer, and the second adhesive layer is positioned below the light-shielding layer, and the first release layer corresponding to the main release paper is formed on the outer surfaces of the first adhesive layer and the second adhesive layer, respectively. paper (release paper) (not shown) and a second release paper (not shown) corresponding to the auxiliary release paper is located. Since the present invention relates to the main release paper, hereinafter, the second release paper, which is an auxiliary release paper, is assumed to be removed, and thus the first release paper will be described.

That is, the light blocking tape 161 is attached to the top surface of the backlight unit 120 through the second adhesive layer. When the liquid crystal panel 110 is attached, the first peeling tape 163 is formed of the light blocking tape 161. It is removed from the adhesive layer. This will be described in detail later.

The light shielding tape 161 has a rectangular frame shape in which a central portion thereof is opened to cover circumferential edges of the top surface of the backlight unit 120.

At this time, the three widths of the four sides of the light-shielding tape 161 has the same first width (L1-1), one width has a second width (L1-2) larger than the first width (L1-1) The second width L1-2 corresponds to the FPCB 129b of the LED assembly 129 so that the second width L1-2 completely covers the FPCB 129b of the LED assembly 129 and the width of the FPCB 129b of the LED assembly 129. It is formed to be equal to or larger than L2 so that light does not leak to a portion outside the screen display area of the liquid crystal panel 110.

Meanwhile, the liquid crystal panel 110 and the backlight unit 120 are modularized through the top cover 140, the support main 130, and the cover bottom 150, and the top cover 140 is formed on the top surface of the liquid crystal panel 110. A rectangular frame having a cross section bent in a shape to cover the side edges is opened to open the front surface of the top cover 140 to display an image implemented in the liquid crystal panel 110.

In addition, the cover bottom 150 on which the liquid crystal panel 110 and the backlight unit 120 are seated, and which is the basis for assembling the entire structure of the liquid crystal display device module, has a rectangular plate shape and vertically bends its four edges to a predetermined height. Configure.

In addition, the support main 130 having a rectangular frame shape seated on the cover bottom 150 and covering the edges of the liquid crystal panel 110 and the backlight unit 120 may include the top cover 140 and the cover bottom 150. Combined.

Here, the top cover 140 may also be referred to as a case top or a top case, the support main 130 may also be referred to as a guide panel or a main support, and a mold frame, and the cover bottom 150 may be referred to as a bottom cover or a lower cover. It is also built.

Hereinafter, a light shielding tape for a flat panel display device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 7 is a view showing a light blocking tape and a release paper attached thereto according to a first embodiment of the present invention, and FIG. 8 is a release paper from a light blocking tape of the liquid crystal display module before the liquid crystal panel is attached according to an embodiment of the present invention. 9 is a cross-sectional view of the liquid crystal display module before the liquid crystal panel is attached according to the exemplary embodiment of the present invention.

Here, the release paper corresponds to the first release paper corresponding to the main release paper and is referred to as release paper for explanation.

As shown in FIG. 7, the light blocking tape 161 includes a release paper 163 that protects one adhesive layer of the light blocking tape 161, and the release paper 163 corresponds to the size of the light blocking tape 161. The protruding portion 163a is formed at one side of one edge in a rectangular plate shape, so that the release paper removing process made by hand is easily performed.

In addition, the release paper 163 is, as shown in FIG. 8, the first protrusion edge line 163a-1 of the first and second protrusion edge lines 163a-1 and 163a-2 facing each other. The cutting line 163b having a second line of the second length L2 by bending at a right angle toward the second protruding edge line 163a-2 from the end of the first line and the first line L1 extending along the line. It is characterized in that the provided. This, the cutting line 163b is in the 'b' shape.

Alternatively, although not shown in the drawings, the release paper 163 may be along the second protruding edge line 163a-2 of the first and second protruding edge lines 163a-1 and 163a-2 facing each other of the protrusion 163a. A cutting line having a second line having a second length may be provided by bending at a right angle toward the first protruding edge line 163a-1 from the end of the first line and the first line of the first length to be connected. This, the cutting line is in the '┌' shape.

On the other hand, the first length (L1) of the first line of the cutting line 163b should be more than the size capable of die cutting, at least 0.75mm (possible ± 0.15 error depending on the type of the ridge) Preferably, the second line is formed to have a second length L2 longer than the first length L1 of the first line.

When the release paper 163 is removed from the light shielding tape 161, a force for removing the release paper from the light shielding tape 161 is required, that is, a peeling force. The distribution W2 of the peeling force is described with reference to FIG. 8. Looking at it, it can be seen that since the cutting line 163b is formed on the release paper 163, the peeling force moves to the end of the cutting line along the cutting line. Therefore, the release paper 163 can be removed from the light shielding tape 161 even with a low peeling force.

Table 1 below shows the results of the desorption force test in the test apparatus for testing the desorption force of the release paper 163 is detached from the light-shielding tape 161 as described above.

Number of tests Shading Tape (161 of FIG. 7) Shading Tape (61 in FIG. 1) 1 time 0.039kgf 0.222kgf Episode 2 0.046kgf 0.165kgf 3rd time 0.072kgf 0.171kgf 4 times 0.074kgf 0.170kgf 5 times 0.052kgf 0.189kgf 6th 0.057kgf 0.183kgf

 Accordingly, the average value of the detachment force when the release paper of the light shielding tape 161 has a cutting line is 0.057, and the average value of the detachment force when the release paper of the light blocking tape (61 of FIG. 1) does not have a cutting line is 0.183. It can be seen that the detachment force of 161 is about 3.22 times smaller than that of the conventional light shielding tape (61 in FIG. 1).

Accordingly, as shown in FIG. 9, the protrusion 163a of the release paper 163 is removed when the protrusion 163a of the release paper 163 is lifted up to remove the release paper 163 from the light shielding tape 161. When lifted along the cutting line 163b connected to the light-emitting tape 161, the release paper 163 can be easily removed.

As such, by forming a cutting line on the release paper 163 according to the present invention, the adhesive force between the light shielding tape and the release paper is weakened, so that the release paper can be removed even with a low peeling force. The tape or light-shielding tape and the FPCB of the LED assembly can be prevented from being lifted together and the light leakage caused by the lifting can be prevented.

In the above description, the cutting line is formed in the first peeling tape from the double-sided adhesive light-shielding tape. However, the cutting line may be formed in the release paper of the single-sided adhesive light-shielding tape (comprising of the light-shielding layer, the adhesive layer, and the release paper).

10 is a view showing a reflector and a protective sheet attached thereto according to a second embodiment of the present invention.

As shown in FIG. 10, the rear surface of the reflector plate 125 is provided with a protective sheet 200 to protect it from the outside. The reflector plate 125 is disposed before the reflector plate 125 is seated on the cover bottom 150 (FIG. 6). As the back surface of the protective sheet 200 is provided to protect from scratches.

The reflector 125 is positioned on the rear surface of the light guide plate 123 of FIG. 6 to reflect most of the light passing through the rear surface of the light guide plate 123 of FIG. 6 toward the liquid crystal panel 110 of FIG. .

The reflective plate 125 may be composed of a polyethylene film (not shown) and a reflective layer (not shown) coated with silver (Ag) having a 90% reflectance of visible light on the polyethylene film, and the polyethylene film and the reflective layer. An anchor coat layer (not shown) may be further included as a means for obtaining excellent adhesion strength therebetween. Alternatively, the corona treatment, the plasma treatment, the glow discharge treatment, the reverse sputter treatment, the roughening treatment, etc. may be performed in addition to the anchor coat layer.

Here, as the base film, it is preferable to use a polyethylene series containing terephthalic acid or the like having good dimensional stability as the base film.

The reflective layer may be formed by depositing silver (Ag) metal particles under a high vacuum by vacuum deposition or sputtering on a base film. In this case, in addition to the silver (Ag) metal particles, copper (Cu) having excellent reflection efficiency, Although it may be formed of aluminum (Al), tin (Sn), gold (Au), stainless steel (SUS) or the like, it is most preferable to use silver (Ag) having excellent mirror reflective properties without absorbing light.

On the other hand, the protective sheet 200 forms a protrusion 200a on one side of one edge of the protective sheet so as to easily remove the protective sheet 200 from the reflector plate 125.

At this time, the first line and the first line of the first length connected along the first protrusion edge line 200a-1 among the first and second protrusion edge lines 200a-1 and 200a-2 of the protruding protrusion 200a. A cutting line 200b having a second line having a second length by bending at a right angle toward the second protruding edge line 200a-2 from the end of the line is provided. This, cutting line 200b is a 'b' shape.

Alternatively, although not illustrated, the first length of the first and second protrusion edge lines 200a-1 and 200a-2 of the protruding protrusion 200a may be connected along the second protrusion edge line 200a-2. A cutting line 200b may be provided having a second line having a second length by bending at a right angle from the end of the first line and the first line toward the first protrusion edge line 200a-1. This, the cutting line 200b is to be a '┌' shape.

Here, the first length of the first line of the cutting line 200b should be at least a size capable of die cutting, preferably at least 0.75 mm (± 0.15 error possible depending on the type of ridge).

The protective sheet 200 is removed in the process of seating the reflective plate 125 on the cover bottom (150 of FIG. 6), by lifting the protrusion 200a of the release paper 200 to lift the protective sheet from the reflective plate 125 When the 200 is removed, the protection sheet 200 can be easily removed from the reflecting plate 125 by lifting along the cutting line 200b connected to the protrusion 200a of the protection sheet 200. Since the peeling force is proportional to the attachment area, the larger the attachment area, the larger the peeling force. According to the present invention, the cutting sheet is formed on the protective sheet 200 to distribute the peeling force so that the protective sheet 200 can be easily removed. Will be.

Meanwhile, the reflective plate 125 according to the present invention may be applied to the liquid crystal display device that does not require the cover bottom (150 of FIG. 6). In this case, the case is positioned on the rear surface of the reflective plate. Accordingly, the protective sheet of the reflective plate is removed in the process of assembling the liquid crystal display device into the case to complete the finished product.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

161: shading tape 163: release paper
161a: protrusion 163b: cutting line
125: reflector 200: release paper
200a: protrusion 200b: cutting line

Claims (6)

A light shielding tape for a flat panel display device positioned between a liquid crystal panel and a backlight unit,
It has a size corresponding to the size of the light-shielding tape is attached to the upper adhesive layer of the light-shielding tape, and includes a release paper having a protrusion,
The release paper bends at a right angle toward the second protruding edge line at the end of the first line and the first line of the first length extending along the first protruding edge line among the first and second protruding edge lines of the protrusion, and is formed of the second length of the second protruding edge line. Light blocking tape for a flat panel display device characterized in that a cutting line having two lines.
The method of claim 1,
The cutting line is
Light shielding tape for flat panel display device characterized in that the "b" shape or "┌" shape.
The method of claim 1,
And the first length of the first line has a range of 0.6 mm to 0.9 mm.
In the flat panel display reflector included in the backlight unit,
A protective sheet having a size corresponding to the size of the reflecting plate and attached to the rear surface of the reflecting plate and having a protrusion;
The protective sheet is bent at a right angle toward the second protruding edge line at the end of the first line and the first line of the first length extending along the first protruding edge line among the first and second protruding edge lines of the protruding portion. A reflecting plate for a flat panel display device, characterized in that a cutting line having a second line is provided.
The method of claim 4, wherein
The cutting line is
A reflector for a flat panel display device, characterized in that the "b" shape or "┌" shape.
The method of claim 4, wherein
And the first length of the first line has a range of 0.6 mm to 0.9 mm.

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