KR100635747B1 - Plasma Display Panel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device. In particular, the present invention relates to a plasma display device that can increase the rigidity of a boss by forming a binding means in a boss fixed to a chassis base formed of a thin plate, thereby increasing the contact area and binding force with the chassis base. It is about.

In the plasma display device of the present invention, a plasma panel on which an image is implemented and a chassis base supported on a front surface of the plasma panel are coupled to the chassis base and the boss to which a plurality of bosses are press-fitted at predetermined positions, and drive to generate an electrical signal for driving the plasma panel. A plasma display device comprising a circuit unit, wherein the chassis base includes a press-fitting hole through which a boss is press-fitted, and the boss includes a press-fitting means press-fitted into the press-hole and fastened to the front surface of the chassis base to support the boss. It is done.

Plasma display, chassis base, boss, fastening means, rigidity increase

Description

Plasma Display Panel {Plasma Display Panel}

1 is a partial cross-sectional view showing a coupling state of a conventional chassis base and the boss.

2 is a perspective view of a plasma display device according to an embodiment of the present invention.

3A is a partial cross-sectional view of the chassis base indentation hole used in the plasma display device according to the embodiment of the present invention;

3B is a cross-sectional view of a boss used in the plasma display device according to the embodiment of the present invention.

3C is a partial cross-sectional view illustrating a state in which the boss of FIG. 3B is pressed into and coupled to the press-in hole of the chassis base of FIG. 3A;

Figure 4 is a partial cross-sectional view showing a coupling state of the chassis base and the boss according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10-Plasma Display 20-Plasma Panel

22-Front Panel 24-Rear Panel

26-heat sink 28-adhesive member

40-Chassis Base 42-Press-In Hole

48-reinforcement

50-Boss 52-Coupling Groove

54-Indentation 56-Binding Plate

60-drive circuit 62-circuit board

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device. More particularly, the present invention relates to a plasma display device, in which a binding means is formed in a boss fixed to a chassis base formed of a thin plate, thereby increasing the contact area and the binding force with the chassis base, thereby increasing the rigidity of the boss. It relates to a display device.

Plasma Display Panel (Plasma Display Panel) forms a discharge electrode on each of the opposing surfaces of two opposing substrates, and discharges predetermined power to each discharge electrode while injecting the discharge gas into the closed discharge space between the substrates. A flat display device using a plasma display panel that implements an image by using light emitted from a fluorescent material of a phosphor layer that is excited by ultraviolet rays generated in a discharge space by applying.

Plasma displays can be formed thinner than Cathode ray tube (CRT) displays, which occupy a large volume, and thus are suitable for realizing a large screen with a relatively small volume. In addition, the plasma display device does not need to form an active element such as a transistor, compared to other flat panel display devices such as LCDs (Liduid Crystal Display), and has a general characteristic of wide viewing angle and high luminance.

The plasma display device manufactures a front panel and a rear panel, respectively, and combines them to form a plasma panel, and a chassis base is assembled on the back of the plasma panel, and a driving circuit unit capable of transmitting an electrical signal with the plasma panel to the rear of the chassis base. It is manufactured by mounting and mounting them to a case.

 In the plasma display device, since the chassis base supports the plasma panel and discharges heat transferred from the plasma panel, the chassis base is formed of a thermally conductive metal, and generally formed of aluminum having good thermal conductivity. Recently, as the plasma display device becomes thinner, the thickness of the chassis base is required to be thinner. However, when the thickness of the chassis base becomes thinner, the function of supporting the plasma panel is weakened. There is a way to reinforce the reinforcing member installed on the back of the chassis base to prevent the twist or bending of the chassis base that can be generated as the thickness of the chassis base becomes thin. However, these reinforcing members may be provided in plural numbers on the rear surface of the chassis base, but if the reinforcing members are unnecessarily installed, the reinforcing members are limited in space utilization on the back of the chassis base. In particular, it is restricted to arrange the circuit board of the driving circuit unit through the boss on the rear surface of the chassis base, and assembling of other components may be difficult. In addition, due to the increase in the reinforcing members there is a problem that the production cost, such as material costs and process costs increases.

Therefore, in addition to the reinforcement of the reinforcing member as described above, the chassis base material is also a conventional aluminum material (the chassis base thickness is 1.5 to 2.0mm) from the steel material (the chassis base thickness is aluminum) May be made thinner). However, as the thickness of the chassis base is reduced, there are problems such as stiffness of the boss or the like coupled to the chassis base is weakened.

1 illustrates a structure in which a boss is press-fitted to a chassis base in the related art. Referring to FIG. 1, when the thickness of the chassis base 1 becomes thin when the boss 2 is pressed into the chassis base 1, an area in contact with the boss 2 and the chassis base 1 ( Proportional to the thickness of the chassis base) and thus the binding force is reduced, thereby causing a weakness of the rigidity of the boss 2. Therefore, there is a problem in that the driving circuit part fixed to the boss 2 is not firmly fixed.

The present invention is to solve the above problems, by forming a binding means to the boss fixed to the chassis base formed of a thin plate to increase the contact area and the binding force with the chassis base plasma display that can increase the rigidity of the boss It is an object to provide a device.

Plasma display device of the present invention devised to solve the above problem is coupled to the plasma base and the chassis base and the boss that is supported on the front surface and a plurality of bosses are pressed in a predetermined position, A plasma display device including a driving circuit unit for generating an electrical signal for driving a plasma panel, wherein the chassis base is formed with a plurality of press-in holes through which the boss is press-fitted, and the boss is formed at one end of the chassis base. It is characterized in that formed on the front surface comprising a binding means for supporting the boss. At this time, the chassis base is preferably formed of a galvanized steel sheet having a thickness of less than 1.0mm. In addition, the boss is coupled to the chassis base by a coupling groove and a press-in end formed on one side and the driving circuit portion is coupled by a screw to a screw groove formed on the other side, the binding means is formed in contact with the press-in end. The binding means may be formed in a dome shape and a flat surface may be attached to the front surface of the chassis base. In addition, the binding means is formed such that the surface bound to the chassis base is formed in a circular, square or polygonal shape and the area of the surface bound to the chassis base has an area of at least 50% larger than the area of the press-in hole, the plasma panel It is preferably formed to a height smaller than the distance of the space formed between the chassis base.

In addition, in the present invention, the binding means may be formed in a plate shape of a predetermined thickness, the horizontal cross-section horizontal to the chassis base may be formed in a circular or square or polygonal. In addition, the binding means may be formed such that the area of the horizontal cross-section is at least 50% larger than the area of the press-in hole, and the thickness is smaller than the distance between the space formed between the plasma panel and the chassis base. It is preferably formed.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is a perspective view of a plasma display device according to an exemplary embodiment of the present invention. 3A is a partial cross-sectional view of the press-fit hole of the chassis base used in the plasma display device according to the embodiment of the present invention. 3B is a cross-sectional view of a boss used in the plasma display device according to the embodiment of the present invention. 3C is a partial cross-sectional view illustrating a state in which the boss of FIG. 3B is pressed into and coupled to the press-in hole of the chassis base of FIG. 3A. Figure 4 is a partial cross-sectional view showing a coupling state of the chassis base and the boss according to another embodiment of the present invention. 5 is a cross-sectional view of a boss according to another embodiment of the present invention.

Referring to FIG. 2, a plasma display device 10 according to an exemplary embodiment of the present invention includes a chassis base 40 mounted on a back surface of the plasma panel 20 and the plasma panel 20 and the plasma panel 20. The driving circuit unit 60 is formed on the rear surface of the chassis base 40, which is the opposite surface of the mounting surface.

The plasma panel 20 includes a front panel 22 and a rear panel 24, and emits a phosphor layer using ultraviolet rays generated when a gas filled therein is discharged, thereby realizing an image. In more detail, the plasma panel 20 is a discharge cell (not shown) which is a space where a discharge formed by the front panel 22 and the rear panel 24 is generated, and is charged and discharged in the discharge cell. Discharge gas, phosphor applied to the surface of the discharge cell and electrodes to which a voltage is applied (not shown) are provided, and discharge is generated in the discharge cell by DC or AC voltage applied between the electrodes. Ultraviolet rays generated and emitted from the discharge gas excite the phosphor to emit visible light, thereby realizing an image.

The chassis base 40 is formed of a steel sheet having a thickness of less than 1.0 mm, preferably a thickness of less than 0.8 mm and is zinc plated on the surface to form a galvanized steel sheet having excellent corrosion resistance. The chassis base 40 is conventionally formed of an aluminum plate having a thickness of at least 1.5 mm. However, when the chassis base 40 is formed of steel steel, the chassis base 40 has a strength capable of supporting the plasma panel even when the chassis base 40 has a thickness smaller than 1.0 mm. do.

The chassis base 40 supports the plasma panel 20 while releasing heat conducted from the plasma panel 20 to prevent the temperature of the plasma panel 20 from rising above an appropriate level, and the plasma panel 20 ) Is prevented from being deformed by heat or broken by external impact. At this time, the heat dissipation plate 26 is provided between the plasma panel 20 and the chassis base 40, and may be attached by an adhesive member 28 such as a double-sided tape. Therefore, the chassis base 40 should support the plasma panel 20 to prevent the plasma panel 20 from being deformed or damaged, so that the chassis base 40 has sufficient rigidity. The chassis base 40 includes a reinforcing member 48 suitable for the rear surface 40b of the chassis base 40, that is, the surface opposite to the surface on which the plasma panel 20 is supported.

Referring to FIG. 3A, the chassis base 40 passes through a front surface 40a on which the plasma panel 20 is supported and a rear surface 40b on which the circuit board 62 of the driving circuit unit 60 is fixed. , The plurality of bosses 42 are press-fitted with a plurality of indentation holes 42 are formed. The indentation hole 42 is formed in a plurality of predetermined positions of the chassis base 40 according to the mounting position of the circuit board 62 of the driving circuit unit 60 determined according to the design of the plasma display device.

Referring to FIG. 3B, the boss 50 has a substantially cylindrical shape with a coupling groove 52, a press fit end 54, and a binding means 56 formed at one side thereof, and the other side has an inner diameter of the press fit hole 42. It has an outer diameter corresponding to and is formed in the shape of a tube 58 in which a screw groove 59 is formed inside. A plurality of bosses 50 are respectively press-fitted into the press-in holes 42 of the chassis base 40. The boss 50 is primarily press-fitted into the chassis base 40 by a coupling groove 52 and a press-fit end 54 formed at one side thereof, and the chassis base is secondary by the binding means 56. The rigidity is improved while being bound to and supported on the front surface 40a of the 40. In addition, the boss 50 is fixed to the driving circuit part 60 by a screw on the other side of the screw groove 59.

The coupling groove 52 is spaced a predetermined distance from one end on the outer peripheral surface of the boss 50 is formed in a predetermined width and depth. In addition, the press-fit end 54 is formed to extend as a whole in a direction perpendicular to the outer circumferential surface from the outer circumferential surface of the boss 50, preferably formed to have the same cross-sectional shape as that of the boss 50. That is, the press-fit end 54 is formed to protrude from the outer circumferential surface of the boss 50 to have an outer diameter larger than the outer diameter of the boss 50. The indentation end 54 is formed such that the length projecting from the outer surface of the boss 50, that is, the outer surface of the tube 58, is preferably at least the depth of the coupling groove 52. In addition, the press-fit end 54 is formed such that its width is at least the width of the coupling groove 52.

The binding means 56 is generally dome-shaped, the front surface 56a is formed in a curved shape, the back surface 56b, that is, the surface in contact with the chassis base 40 is formed in a plane. In addition, the binding means 56 may be formed in the shape of the back surface 56b in a circular, quadrangular or polygonal shape, but is not limited thereto. Preferably, the binding means 56 is integrally formed in contact with the indentation end 54, and a separate binding means 56 is formed by being coupled to the indentation end 54 by riveting, bolting, or welding. Of course it can. The binding means 56 is formed such that the area of the back surface 56a has an area of at least 50% larger than the area of the press-in hole 42. When the area of the binding means 56 is too small, that is, when the binding area between the binding means 56 of the boss 50 and the chassis base 40 is small, the boss 50 and the chassis base are small. The increase in the binding area of the 40 becomes small, so that it is insufficient to increase the rigidity of the boss 50.

In addition, the binding means 56 should preferably be formed at a height smaller than the distance of the space formed between the plasma panel 20 and the chassis base 40. If the height of the binding means 56 is too large, there is a problem in coupling the plasma panel 20 and the chassis base 40. Since the space between the plasma panel 20 and the chassis base 40 is variable according to the specification of the plasma display device, it is of course not necessary to set the absolute value here.

Referring to FIG. 3C, the chassis base 40 and the boss 50 have a tube 58 portion of the boss 50 inserted into the press-in hole 42, and then the boss 50 is press-fitted. It is fixed. In more detail, the tube 58 portion of the boss 50 is inserted into the press-in hole 42 of the chassis base 40 so that the press-in end 54 and the press-in hole 42 contact each other. In this case, since the diameter of the press-fit end 54 is larger than the inner diameter of the press-fit hole 42, the press-fit end 54 is in contact with the chassis base 40 of the outside of the press-fit hole 42. In this state, when the boss 50 is press-fitted by a press jig (not shown in the drawing), the press-fit end 54 pressurizes the chassis base 40 outside the press-fit hole 42 and the press-hole (42) The chassis base 40 of the outer part is partially moved to the engaging groove 52 of the boss 50 so that the boss 50 is fixed to the chassis base 40. In addition, the back surface 56b of the binding means 56 is bound to the front surface of the chassis base 40 to improve the rigidity of the boss 50. That is, the boss 50 is supported by the chassis base 40 by the coupling groove 52 and the binding means 56, so that the boss 50 is more firmly supported by the chassis base 40. It is supported so that it does not move or break when it is forced in the vertical and horizontal directions.

In addition, the bosses 50 are formed to have a predetermined thickness so that the rigidity required as the support means of the driving circuit unit 60 can be at least satisfied. Here, the thickness of the boss 50 means a thickness corresponding to the difference between the inner diameter of the screw groove 59 formed inside the boss 50 and the outer diameter of the boss 50, the boss 50 is supported It is determined according to the size of the driving circuit unit 60.

The driving circuit unit 60 may include circuit boards 62 including electrodes (not shown) provided in the plasma panel 20 and electrode switching elements for controlling electrical signals applied to the electrodes. It is formed to include. The circuit boards 62 are fixed to the boss 50 and coupled to the chassis base 40.

Figure 4 is a partial cross-sectional view showing a coupling state of the chassis base and the boss according to another embodiment of the present invention.

In the chassis base 140 according to another embodiment of the present invention, referring to FIG. 4, a plurality of press-in holes 142 are press-fitted with a plurality of bosses 150 for fixing the driving circuit unit to the chassis base 140. Is formed. The indentation hole 142 penetrates through the front surface 140a on which the plasma plasma panel 20 of the chassis base 40 is supported and the rear surface 140b on which the circuit board 62 of the driving circuit unit 60 is fixed. It is formed to a predetermined size.

Boss 150 according to another embodiment of the present invention, referring to Figure 4, the coupling groove 152, the press-in end 154 and the binding means 156 is formed on one side in a substantially cylindrical shape, the other side is It has an outer diameter corresponding to the inner diameter of the press-in hole 142 and is formed in the shape of a tube 158 in which a screw groove 159 is formed. The boss 150 is primarily press-fitted into the chassis base 140 by a coupling groove 152 and a press-fit end 154 formed at one side thereof, and secondly by the binding means 156, the chassis base. The rigidity is improved while being bound to and supported by the front surface 140a of the 140. In addition, the boss 150 is fixed to the drive circuit unit 60 by a screw in the screw groove 159 of the other side.

The coupling groove 152 is spaced a predetermined distance from one end to the outer peripheral surface of the boss 150 is formed in a predetermined width and depth. In addition, the press-fit end 154 extends from the outer circumferential surface of the boss 150 in a direction perpendicular to the outer circumferential surface, and is preferably formed to have the same cross-sectional shape as that of the boss 150. That is, the press-fit end 154 is formed to protrude from the outer peripheral surface of the boss 150 to have an outer diameter larger than the outer diameter of the boss 150. The indentation end 154 is formed such that the length projecting from the outer surface of the boss 150, that is, the outer surface of the tube 158 is preferably at least the depth of the coupling groove 152. In addition, the press-fit end 154 is formed such that its width is at least the width of the coupling groove 152.

The binding means 156 has a plate shape having a substantially uniform predetermined thickness, and the front surface 156a and the rear surface 156b are formed in a substantially flat surface. In addition, the fastening means 156 may be formed in a horizontal cross section, that is, a horizontal cross section horizontal to the front surface 156a or the chassis base 40 in a circular, quadrangular, or polygonal shape. no. The binding means 156 is preferably integrally formed in contact with the press-fit end 154, and a separate binding means 156 is coupled to the press-fit end 154 by riveting, bolting or welding to be formed. Of course it can. The binding means 156 is formed such that the area of the back surface 156a has an area of at least 50% larger than the area of the press-in hole 142. When the area of the binding means 156 is too small, that is, when the binding area between the binding means 156 of the boss 150 and the chassis base 140 is small, the boss 150 and the chassis base are small. The increase in the binding area of the 140 becomes small, so that it is insufficient to increase the rigidity of the boss 150.

In addition, the binding means 156 should preferably be formed to a thickness smaller than the distance of the space formed between the plasma panel 20 and the chassis base 140. If the height of the binding means 156 is too large, there is a problem in coupling the plasma panel 20 and the chassis base 140. Since the space between the plasma panel 20 and the chassis base 140 is variable according to the specification of the plasma display device, it is of course not necessary to set the absolute value here.

Next, the operation of the chassis base and the boss according to the embodiment of the present invention will be described.

In the chassis base 40 and the boss 50 according to the embodiment of the present invention, the tube 58 of the boss 50 is inserted into the press-in hole 42, and then the boss 50 is press-fitted and fixed. . When the boss 50 is press-fitted by a press-fit jig (not shown) in the state where the press-fit end 54 is in contact with the chassis base 40 of the press-in hole 42, the press-fit end 54 Pressure is applied to the chassis base 40 outside the press-in hole 42. Therefore, the metal material of the chassis base 40 outside the press-in hole 42 moves to the coupling groove 52 of the boss 50 to be filled in the defect groove 52, so that the boss 50 is It is fixed to the chassis base 40. In addition, since the bottom 56b of the binding means of the boss 50 contacts the front surface of the chassis base 40, the boss 50 is bound, thereby improving the rigidity of the boss 50. Therefore, the boss 50 is fixed to the chassis base 40 by the coupling groove 52 and the binding means 56, so that the boss 50, even if the chassis base 40 is formed of a thin plate Is more firmly fixed to the chassis base 40 so that the boss 50 does not move when the force is applied in the vertical direction and the horizontal direction. That is, when the driving circuit unit 60 is fixed to the screw groove 59 of the boss 50, the driving circuit unit 60 can be more firmly supported.

As described above, the present invention is not limited to the specific preferred embodiments described above, and any person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Various modifications are possible, of course, and such changes are within the scope of the claims.

According to the plasma display device according to the present invention, the boss is firmly coupled to the chassis base by the fastening means so that the rigidity can be more firmly supported and the driving circuit part fixed to the boss can be more firmly formed, thereby making the chassis base thinner. It's effective.

In addition, according to the present invention, since the chassis base may be formed of a thin plate, the overall thickness of the plasma display device may be reduced.

Claims (10)

A plasma display including a plasma panel on which an image is implemented, a chassis base on which a front surface of the plasma panel is supported and a plurality of bosses are pressed into a predetermined position, and a driving circuit unit coupled to the boss and generating an electrical signal for driving the plasma panel. In the apparatus, The chassis base is formed with a plurality of indentation holes through which the boss is pressed, And the boss is formed at one end of the boss, and is attached to a front surface of the chassis base to support the boss. The method of claim 1, And the chassis base is formed of a galvanized steel sheet having a thickness of less than 1.0 mm. The method of claim 1, The boss is coupled to the chassis base by a coupling groove and a press-in end formed on one side, and the driving circuit unit is coupled by a screw to a screw groove formed on the other side, and the binding means is formed in contact with the press-in end. Plasma display device. The method of claim 1, And the binding means is formed in a dome shape and a flat surface is bound to the front surface of the chassis base. The method of claim 4, wherein And wherein the binding means has a surface bound to the chassis base having a circular shape, a square shape, or a polygon shape. The method of claim 5, And wherein the binding means is formed such that an area of a surface of the surface bonded to the chassis base has an area of at least 50% larger than that of the press-in hole. The method of claim 1, And the binding means is formed in a plate shape having a predetermined thickness. The method of claim 7, wherein And wherein the binding means has a horizontal cross section horizontally formed on the chassis base in a circle, a square, or a polygon. The method of claim 8, And the binding means is formed such that an area of the horizontal cross section has an area of at least 50% larger than that of the press-in hole. The method of claim 1, And the binding means has a thickness smaller than a distance between the plasma panel and the chassis base.

Images