KR100731447B1 - Chassis base and plasma display apparatus including the same - Google Patents

Abstract

According to the chassis base of the present invention, in order to increase the size of the chassis base required by the enlargement of the plasma display device, the chassis base formed of a plurality of pieces is bonded to each other to form a single plane by adjoining neighboring pieces to form a flat surface. The problem of increased logistics costs can be overcome.

Description

Chassis Base and Plasma Display with Same {CHASSIS BASE AND PLASMA DISPLAY APPARATUS INCLUDING THE SAME}

1 is a plan view showing how the chassis base of a plurality of pieces are coupled according to an embodiment of the present invention;

2 is a plan view showing the chassis base of the plurality of pieces are coupled according to another embodiment of the present invention;

3 is a cross-sectional view taken along line A-A of FIG. 1 or 2;

4 is a plan view showing a state in which the chassis base of the plurality of pieces are coupled according to another embodiment of the present invention;

FIG. 5 is a schematic exploded perspective view of the PDP having the chassis base of FIG. 1. FIG.

Explanation of symbols on the main parts of the drawings

100: PDP 103: panel

106: heat conductive sheet 108: adhesive member

109, 109 ', 109 ": Chassis Base

110: circuit portion 150: fastening member

160: groove 162: protrusion

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chassis base, and more particularly, to a chassis base having a plurality of pieces, and adjacent pieces being combined with each other to form one plane and a plasma display device having the same.

Recently, many flat display devices (CRTs) have been developed to replace Cathode Ray Tubes (CRTs). Representative examples of such flat panel display devices include liquid crystal display devices (LCDs), electro-luminescence display devices (ELDs), field emission display devices (FEDs), and plasmas. And a display panel (PDP; Plasma Display Panel).

Among such flat panel display apparatuses, the PDP displays an image by plasma discharge, which has the advantages of enabling complete digital implementation and relatively large screen implementation compared to other flat panel display apparatuses.

Such a PDP is composed of a filter assembly, a panel, a heat conductive sheet, a chassis base, a circuit part, a connection member, a protective plate, and various additional devices housed inside the front / rear case.

The chassis base serves to support a panel displaying an image located on the front surface thereof and to fix a circuit portion for driving the panel on the back surface thereof. Such a chassis base serves as the above-mentioned support material, and at the same time, heats the heat generated from the panel and the circuit portion to the outside, and is made of aluminum, which is usually a metal material, for grounding of the circuit portion. Recently, as the PDP 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 panel becomes weaker. Therefore, in order to prevent the twisting or bending of the chassis base, which may occur as the thickness of the chassis base becomes thin, a reinforcement is installed on the rear surface of the chassis base to reinforce the strength of the chassis base.

On the other hand, recently, due to the development of circuit and panel design, the power consumption of the PDP module is reduced and the amount of electro magnetic interference (EMI) and heat generation are decreasing. Efforts to replace the chassis base are ongoing. In addition to the material cost advantages, the plastic chassis base has the advantage of low cost, simple process, and reduced weight and noise of the module by injection molding.

However, as the plasma display device becomes larger, the size of the chassis base for supporting the panel also increases, resulting in a problem of poor manufacturability.

In particular, the chassis base made of plastic is produced by the injection molding method, the larger the size of the injection molding, the problem of shrinkage deformation during solidification, and the problem of increasing the logistics cost according to the transport of a large injection molding.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a chassis base and a plasma display device having the same.

In order to achieve this object, the chassis base according to the present invention,

It is made of a plurality of pieces, characterized in that the adjacent pieces are combined with each other to form a single plane. Here, it is preferable that the two pieces have a complementary shape in a coupling portion where two neighboring pieces are joined.

In addition, the plasma display device according to the present invention to achieve the above object,

In a plasma display device comprising a panel for displaying an image, a chassis base for supporting the panel, and a circuit portion for driving the panel, the chassis base is composed of a plurality of pieces, and adjacent pieces are coupled to each other to form a plane. Characterized in forming. Here, it is preferable that the two pieces have a complementary shape in a coupling portion where two neighboring pieces are joined.

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

FIG. 1 is a plan view illustrating a chassis base of a plurality of pieces coupled according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line A-A of FIG.

Referring to the drawings, the chassis base 109 according to the present invention is composed of a plurality of pieces, neighboring pieces are combined with each other to form a plane. That is, each piece 109a, 109b of the chassis base 109 is composed of a front surface 110, a rear surface 111 facing the front surface 110, and a side surface 112 connecting the front surface 110 and the rear surface 111. At this time, the side 112 of the neighboring pieces are coupled to each other in a complementary form so that the front surface 110 or the rear surface 111 or the front and rear surfaces 110 and 111 form one plane.

The chassis base 109 is a structure for supporting other components, for example, a structure for supporting a panel and a printed circuit board in a PDP.

The plurality of pieces 109a and 109b may be made of a plastic material. In the case of a plastic material, it is generally formed by an injection molding method.

In addition, in the joining portion where two neighboring pieces are joined, the two pieces preferably have a complementary shape in order to make the two pieces convenient and firm to each other. Here, the coupling portion may be regarded as referring to the side coupled to the neighboring pieces of the plurality of sides configured in each piece (109a, 109b).

Referring to FIG. 3, in the joint where two neighboring pieces 109a and 109b are joined, one cross section of one of the two pieces is b-shaped, and the corresponding cross section of the other piece 109b is a. -Shaped, and these two pieces are joined by the same fastening member 150.

As shown in FIG. 1, when a line formed by joining two neighboring pieces is viewed in a direction perpendicular to the plane, it exhibits a sawtooth shape.

FIG. 2 is a plan view illustrating a chassis base of a plurality of pieces coupled according to another embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line A-A of FIG.

The chassis base 109 ′ of the present embodiment also includes a plurality of pieces, and neighboring pieces are combined with each other to form a plane. In addition, at the joining portion where two neighboring pieces are joined, the two pieces 109a 'and 109b' have a complementary shape. That is, each piece 109a ', 109b' of the chassis base 109 'is composed of a front side, a back side, and a side, and the side surfaces 112 of neighboring pieces 109a', 109b 'are joined in a complementary form. In this case, the side at which the coupling is made or more specifically, the coupling portion of the complementary form may be referred to as a coupling portion.

When only the difference from the above-described embodiment is described, the line formed by combining two neighboring pieces 109a 'and 109b' shows a straight line shape when viewed in a direction perpendicular to the plane.

4 is a plan view illustrating a state in which chassis pieces of a plurality of pieces are coupled according to another embodiment of the present invention.

In this embodiment, the chassis base 109 "is also formed of a plurality of pieces, and neighboring pieces are combined with each other to form a single plane. In addition, in the coupling portion where two neighboring pieces are combined, the two pieces 109a", 109b ") has a complementary shape.

In this embodiment, the groove 160 that grows toward the inside of the piece 109a "on the side of one of the two pieces 109a" at the joining portion where the two neighboring pieces 109a "and 109b" are joined. Is formed, and on the corresponding side surface of the other piece 109b ", a protrusion 162 is formed which fits into the groove 160. In this case, adhesion between the groove 160 and the protrusion 162 is performed. The member may be interposed to strengthen the bond between the two.

Accordingly, in the present embodiment, unlike the above-described embodiments, a separate fastening member is unnecessary.

The chassis base in the above three embodiments is composed of two pieces, but the present invention is not limited thereto, and may be composed of two or more pieces.

5 is a schematic separated perspective view of the PDP having the chassis base of FIG. 1.

Referring to the drawings, the plasma display apparatus 100 includes a panel 103, a thermal conductive sheet 106, an adhesive member 108, a chassis base 109, a circuit unit 110, a protective plate 120, and a connection member 130. ).

The panel 103 displays an image by the discharge generated by the drive signal provided from the circuit formed in the circuit section 110. To this end, the panel 103 forms partitions, electrodes, phosphors, dielectrics, and protective films between the two substrates 103a and 103b to form a space in which discharge occurs, that is, a discharge cell. The discharge cell is also filled with an inert gas that emits ultraviolet rays in the wavelength band that excite the phosphor during discharge. The panel 103 is connected to the circuit unit 110 by a flexible printed circuit (FPC) or a chip carrier film (TCP) in which some driving chips are mounted. In addition, accessory members such as an adhesive member 108 and a thermally conductive sheet 106 may be attached to the rear surface of the panel 103.

The thermally conductive sheet 106 is inserted between the panel 103 and the chassis base 109 to transfer heat generated from the panel 103 when the PDP is driven to the chassis base 109 or to dissipate heat to heat the panel 103. To prevent it from rising sharply. In addition, the thermally conductive sheet 106 evens the temperature distribution of the non-uniform panel 103, thereby preventing the panel 103 from being broken or malfunctioned due to local temperature differences.

The adhesive member 108 fixes the panel 103 to the chassis base 109. To this end, the adhesive member 108 is formed in the form of a strip or frame in the edge portion of the thermal conductive sheet 106, as shown in Figure 5, thereby fixing the panel 103 to the chassis base (109). As the adhesive member 108, it is possible to use an adhesive, an adhesive sheet and an adhesive tape.

The chassis base 109 serves to support the panel 103 displaying an image located on the front surface thereof and to fix the circuit portion 110 for driving the panel 103 on the back surface thereof. The chassis base 109 serves as the above-mentioned support material, and at the same time, radiates heat generated from the panel 103 and the circuit unit 110 to the outside, and is usually made of a metal material for grounding the circuit unit 110. It is made of aluminum. Recently, as the PDP becomes thinner, the thickness of the chassis base 109 is required to be thinner, but when the thickness of the chassis base 109 becomes thinner, the function of supporting the panel 103 becomes weaker. Therefore, in order to prevent twisting or bending of the chassis base 109 that may occur while the thickness of the chassis base 109 becomes thin, a reinforcing material is installed on the rear surface of the chassis base 109 to reinforce the strength of the chassis base 109. Done.

Recently, due to the development of circuit and panel design, the power consumption of the PDP module is reduced and the amount of electro magnetic interference (EMI) and heat generation are decreasing. Accordingly, the chassis base made of expensive aluminum is made of low cost plastic. Efforts to replace the chassis base 109 are ongoing. In addition to the material cost advantage, the chassis base 109 made of plastic has the advantage of low cost, simple process, and reduced weight and noise of the module by injection molding.

Chassis base 109 according to the present invention is composed of a plurality of pieces (109a, 109b), the neighboring pieces are combined with each other to form a plane. In addition, at the joint where two neighboring pieces are joined, the two pieces 109a and 109b have a complementary shape. Each embodiment thereof is as described above.

The circuit unit 110 is divided into several pieces of substrates for driving the PDP. That is, the circuit unit 110 includes a power supply unit, a logic circuit unit, an address circuit unit, a scan circuit unit, a sustain circuit unit, and driving buffer boards. The driving buffer boards are provided between each circuit portion and the panel 103, and the drive signal from each circuit portion is provided to the panel 103 via this driving buffer board. In addition, the driving buffer boards are connected to the panel 103 by a connecting member such as TCP or FPC.

The protective plate 120 protects the connection member 130 together with the front case and the rear case from external shocks, and transfers heat generated from the connection member 130 to a heat dissipation member (not shown), and also directly radiates some heat. By preventing the damage and malfunction of the connecting member 130.

Although the present invention has been described using PDP as an example, the contents of the present invention can be applied to other flat panel display devices.

According to an embodiment of the present invention, a chassis base and a plasma display device having the same include a plane in which each chassis base formed of a plurality of pieces is bonded to each other by neighboring pieces in order to increase the size of the chassis base required by the enlargement of the plasma display device. By doing this, it is possible to overcome the problem of shrinkage deformation and logistics cost increase.

Although the present invention has been described with reference to the illustrated embodiments, it is merely exemplary, and the present invention may encompass various modifications and equivalent other embodiments that can be made by those skilled in the art. Will understand.

Claims (11)

Made of a plurality of pieces, Each piece is composed of a front and rear side and the side connecting the front and the rear, The chassis base, characterized in that the side of the neighboring pieces are coupled to each other so that any one of the front and the rear forms one plane. The method of claim 1, The plurality of pieces of the chassis base, characterized in that made of a plastic material. The method according to claim 1 or 2, Chassis base, characterized in that the two pieces have a complementary shape in the coupling portion that the two adjacent pieces are joined. The method of claim 3, wherein And wherein at one end of the two pieces one section of the two pieces is b-shaped, the corresponding section of the other piece is a b-shape and the two pieces are joined by the same fastening member. The method of claim 4, wherein Chassis base characterized in that the sawtooth shape when viewed from the direction perpendicular to the plane formed by the joining of the two neighboring pieces. The method of claim 4, wherein The chassis base, characterized in that the straight line when viewed from the direction perpendicular to the plane formed by combining two neighboring pieces. The method of claim 3, wherein In the coupling portion, the chassis base, characterized in that the grooves that are larger toward the inside of the piece is formed on the side of one of the two pieces, the projection is fitted to the groove on the corresponding side of the other piece. The method of claim 7, wherein A chassis base, characterized in that the adhesive member is interposed between the groove and the protrusion. A plasma display device comprising a panel for displaying an image, a chassis base for supporting the panel, and a circuit portion for driving the panel. The chassis base is composed of a plurality of pieces, each piece is composed of a front side and a rear side and the side connecting the front and the rear, the side of the neighboring pieces are coupled to each other any one of the front and the rear Plasma display device characterized in that one plane. The method of claim 9, And the plurality of pieces are made of a plastic material. The method according to claim 9 or 10, And wherein the two pieces have a complementary shape in a coupling portion where two neighboring pieces are joined.

Images