KR100592265B1 - Plasma display - Google Patents

Abstract

The present invention discloses a plasma display device. According to the invention, a panel for displaying an image; A driving circuit unit for controlling driving of the panel; A chassis base supporting and dissipating the panel and having a driving circuit mounted thereon; Signal transmission means for connecting an electric signal to the panel by connecting the panel and the driving circuit part, the signal transmitting means being grouped into at least two or more groups, between the driving circuit part and the chassis base; The fastening space for fastening is characterized in that it is provided.

Description

Plasma display apparatus

1 is a cross-sectional view of a unit discharge cell of a conventional plasma display device.

2 is an exploded perspective view of a conventional plasma display device.

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

4 is a front view showing a state in which the signal transmitting means of FIG.

5 is a front view according to another example of the state in which signal transmitting means are arranged in FIG. 4;

<Brief description of the major symbols in the drawings>

111 Panel 112 Chassis base

113. Drive circuit 114. Buffer board

120,121,122..Signal transmission means 124.Tightening space

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly, to a plasma display device having an improved structure such that a stable coupling between a signal transmission means and a driving circuit unit can be achieved.

Typically, the plasma display device forms light on the opposite surfaces of the substrates, and applies a predetermined power while injecting a discharge gas into the spaces between the substrates, thereby emitting light emitted by the ultraviolet light generated in the discharge space. Refers to a flat panel display that implements an image. Such a plasma display device can be manufactured with a thin thickness of several centimeters or less, has a large screen, and is in the spotlight as a next-generation image display device in view of having a wide viewing angle of 150 ° or more.

1 illustrates a unit discharge cell of a conventional plasma display device.

Referring to the drawings, the discharge cell 10 includes first and second substrates 11 and 21 disposed to face each other. On the lower surface of the first substrate 11, a sustain electrode pair 12 formed of a pair of X electrodes 13 and Y electrodes 14 spaced apart from each other by a discharge gap is formed. The X electrode 13 and the Y electrode 14 serve as the common electrode and the scan electrode, respectively, and are formed on the lower surfaces of the transparent electrodes 13a and 14a and the transparent electrodes 13a and 14a to form a voltage. Each of the bus electrodes 13b and 14b is applied. The pair of sustain electrodes 12 is buried by the first dielectric layer 15, and a protective layer 16 is formed on the lower surface of the first dielectric layer 15.

The address electrode 22 is formed on the second substrate 21 facing the first substrate 11. The address electrode 22 is buried by the second dielectric layer 23, and partition walls 24 are formed on the second dielectric layer 23 to be spaced apart at predetermined intervals. The phosphor layer 25 is formed of a fluorescent material on the inner side of the partitions 24 and the upper surface of the second dielectric layer 23, and a discharge gas is injected into the inner space.

A plurality of discharge cells configured as described above are provided in the plasma display device. In FIG. 2, an example of a conventional plasma display device is illustrated.

Referring to the drawings, the plasma display device 30 includes a panel 31 displaying an image, a chassis base 32 supporting the panel 31, and a driving circuit unit 33 driving the panel 31. And signal transmission means 35 for transmitting a signal from the driving circuit part 33 to the panel 31.

The panel 31 may include a plurality of discharge cells 10 (refer to FIG. 1) as described above. The sustain electrode pairs 12 and the address electrodes 22 disposed in the discharge cells 10 may be provided. In the field, at least one terminal portion is connected to the driving circuit portion 33 via the signal transfer means 35.

Meanwhile, the address electrodes 22 are distributed in the vertical direction of the panel 31 based on the drawings, so that the terminal portions of the address electrodes 22 are buffered through the plurality of signal transmission means 35. ) Typically, since the number of terminal portions of the address electrodes 22 is greater than the number of the signal transmitting means 35, the terminal portions of the plurality of address electrodes 22 are connected to one signal transmitting means 35. As described above, the signal transmission means 35 connected to the address electrodes 22 are spaced at regular intervals and connected to the buffer substrate 34, and screwed into the spaces 37 between the portions 36 to be connected. 38 are each disposed so that the buffer substrate 34 is coupled with the chassis base 32.

However, as the buffer substrate is fastened to the chassis base as described above, when the number of address electrodes is small, sufficient space for fastening may be secured. However, the number of address electrodes is recently increased due to the fine pitch of the panel. When is increased, the number of signal transmission means correspondingly increases, so the space for the fastening as described above is inevitably reduced due to the size of the signal transmission means. As a result, the fastening may not be easy, and the buffer substrate may be damaged during the fastening operation, or connection failure may be generated at the connection portion between the signal transmission means and the buffer substrate. In addition, since heat dissipation is not smoothed from the signal transmission means, which may cause problems such as malfunction of the panel, a solution for this is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plasma display device which enables a stable coupling between a signal transmission means and a driving circuit unit in accordance with a trend of high definition.

Plasma display device according to the present invention for achieving the above object,

A panel displaying an image;

A driving circuit unit controlling driving of the panel;

A chassis base supporting and dissipating the panel and having the driving circuit unit mounted thereon;

And signal transmission means for connecting the panel and the driving circuit unit to transfer an electrical signal to the panel.

The signal transmitting means are grouped into at least two groups, and a fastening space for fastening the driving circuit unit and the chassis base is provided between the groups.

It is preferable that the address electrodes of the panel are connected to the signal transmission means grouped into the groups.

The signal transmission means is connected to a buffer substrate provided in the driving circuit portion, it is preferable that the fastening spaces are provided in the buffer substrate.

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

3 is an exploded perspective view of the plasma display device according to an exemplary embodiment of the present invention, and FIG. 4 is a front view showing a state in which the signal transmitting means of FIG. 3 is disposed.

Referring to the drawings, the plasma display device 100 according to an exemplary embodiment of the present invention includes a panel 111, a chassis base 112 supporting the panel 111, and a mounting on the chassis base 112. Basically, the driving circuit section 113 is provided.

The panel 111 displays an image and includes a front panel and a rear panel. The front panel includes a plurality of storage electrode pairs including a pair of X electrodes and Y electrodes, a first dielectric layer filling the storage electrode pairs, and a protective layer coated on a surface of the first dielectric layer. The back panel is sealed to face the front panel, and includes a plurality of address electrodes in a form orthogonal to the sustain electrode pairs, a second dielectric layer filling the address electrodes, and a second dielectric layer on the second dielectric layer. Barrier ribs formed on the barrier ribs to define discharge cells and prevent cross-talk, and red, green, and blue phosphor layers applied inside the discharge cells partitioned by the barrier ribs.

A filter including an electromagnetic shielding layer or the like is installed on the front surface of the panel 111 to block electromagnetic waves harmful to a human body generated when the panel 111 is driven.

The chassis base 112 disposed at the rear of the panel 111 supports the panel 111 and receives heat from the panel 111 to release the heat. The panel 111 and the chassis base 112 It can be fixed to each other by an adhesive member such as a double-sided tape. In addition, a heat dissipation means for the panel, which is a heat conducting medium, is further interposed between the panel 111 and the chassis base 112 so that heat generated from the panel 111 is smoothly transferred to the outside via the chassis base 112. May be discharged.

A reinforcing member 115 is further installed on at least one side of the chassis base 112 to prevent bending of the chassis base 112 and to increase an area radiated from the chassis base 112 to increase heat dissipation efficiency. The reinforcing member 115 may be fixed to the chassis base 112 by a screw or the like, but is not limited thereto. The reinforcing member 115 may be integrally formed with the chassis base.

A plurality of electronic components for driving the panel 111 are mounted in the driving circuit unit 113 mounted at the rear of the chassis base 112. The electronic components may include various components such as components for supplying power to the panel 111 and components for applying an electrical signal to implement an image on the panel 111. The driving circuit unit 113 is accommodated in a case not shown together with the panel 111 and the chassis base 112 to form the plasma display apparatus 100.

Meanwhile, the driving circuit unit 113 drives the panel 111 by applying an electrical signal to the sustain electrode and the address electrode provided in the panel 111. Electrically connected to the (111).

According to the present embodiment, the signal transmission means 120 may be a tape carrier package (TCP), a chip on film (COF), or the like. Here, the TCP is formed in a package by mounting an element and a Y-turn drive IC in a tape form, and the COF is an element mounted on a film constituting a flexible printed cable (FPC). Since TCP and COF have flexibility and many devices can be mounted, the size of the driving circuit can be reduced, which is advantageous.

The signal transmission means 120 are signal transmission means 121 disposed on the left and right sides of the chassis base 112, respectively, and signal transmission means 122 disposed on the upper and lower sides of the chassis base 112, respectively. Include them. Signal transmission means 122 disposed at the upper side and the lower side of the chassis base 112 to connect between the panel 111 and the driving circuit unit 113 may include address electrodes of the panel 111 according to the present embodiment. Connected.

In more detail, a plurality of conductors are arranged in the signal transmission means 122 via elements, and address electrodes are respectively connected to and correspond to the conductors. Accordingly, one end of one signal transmission means 122 is connected to a plurality of address electrodes are assembled, the other end can be connected to the buffer substrate 114 provided in the driving circuit unit 113.

In this case, the signal transmission means 122 may be disposed on the reinforcing member 115 installed in the chassis base 112, and means for heat dissipation of the device may be provided on both sides of the signal transmission means 122, respectively. . In addition, a plate for protecting the outer side of the signal transmission means 122 may be further provided.

On the other hand, according to one feature of the invention, the signal transmission means 122 disposed on the upper side of the chassis base 112 is grouped into at least two or more groups (group), likewise arranged below the chassis base 112 The signal transmission means 122 are also grouped into at least two groups.

As shown in FIGS. 3 and 4, the signal transmitting means 122 is provided at the top 10 and the lower side of the chassis base 112, respectively. 4, 3, 3, 2 dogs are grouped together.

On the other hand, since the ten signal transmission means 122 may be arranged in groups, one, four, four, one by one, as shown in Figure 5, the arrangement is not limited to the bar shown in various Of course it can be done. And, as shown, the number of the signal transmission means is provided by 10, but this is exemplary and may vary depending on conditions such as the resolution of the panel.

As described above, the signal transmission means 122 grouped into groups should be arranged so that the distance between the groups is larger than the distance between the signal transmission means 122 constituting a group, at least the interval between the groups It is preferable that the distance between the signal transmitting means 122 forming a group is 1.5 times or more.

As described above, the signal transmission means 122 is connected to the buffer substrate 114 in a grouped state, so that the connection portions 123 between the signal transmission means 122 and the buffer substrate 114 are also provided. The signal transmitting means 122 may be grouped and arranged in groups such as grouped and arranged in groups.

Accordingly, in the connecting portions 123 grouped into a plurality of groups, the spacing between the groups may be larger than that between the connecting portions 123 grouped into one group, so that the spaces between the groups are increased. Fastening spaces 124 for fastening between the buffer substrate 114 and the chassis base 112 may be sufficiently secured. The width A of the fastening space 124 is preferably 1.5 times or more of the width B of the space between the connecting portions 123 tied into one group.

As the fastening spaces 124 are sufficiently secured as described above, the fastening spaces 124 between the buffer substrate 114 and the chassis base 112 are fastened by fastening means 125 such as screws having a predetermined size in the fastening spaces 124. The fastening operation may be easier, and thus the breakage of the buffer substrate 114 may be prevented during the fastening operation. In addition, the connection failure can be prevented at the connection portion 123 between the signal transmission means 122 and the buffer substrate 114, while the heat radiation from the signal transmission means 122 can be made more smoothly, Malfunction of the panel 111 can be prevented.

As described above, the panel 111 has a high resolution at a resolution of 1366 × 768 or more and the number of address electrodes increases, so that the number of the signal transmitting means 122 is correspondingly increased. In the case where is increased, it can be made larger.

As described above, according to the present invention, even when the panel is high in size and the number of signal transmitting means is increased, sufficient space for fastening between the buffer substrate to which the signal transmitting means is connected and the chassis base can be secured. Thus, fastening can be facilitated. In addition, heat dissipation may be smoothly performed from the signal transmission means due to the above space, thereby preventing a malfunction of the panel.

In addition, during the fastening operation as described above, damage to the buffer substrate can be prevented, and a connection failure can be obtained at the connection portion between the signal transmission means and the buffer substrate.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Could be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

Claims (7)

A panel displaying an image; A driving circuit unit controlling driving of the panel; A chassis base supporting and dissipating the panel and having the driving circuit unit mounted thereon; And signal transmission means for connecting the panel and the driving circuit unit to transfer an electrical signal to the panel. And the signal transmitting means are grouped into at least two groups, and a fastening space for fastening the driving circuit unit and the chassis base is provided between the groups. The method of claim 1, And the address electrodes of the panel are connected to the signal transmitting means grouped into the groups. The method of claim 2, The signal transmission means is connected to a buffer substrate provided in the driving circuit portion, characterized in that the fastening spaces are provided in the buffer substrate. The method according to claim 1 or 2, The signal transmission means is a plasma display device, characterized in that any one selected from TCP, COF. The method of claim 1, And the spacing between the groups is at least 1.5 times the spacing between the signal transmitting means in the group. The method of claim 1, And the panel has a resolution of at least 1366 × 768. The method of claim 1, And at least one side of the chassis base further includes a reinforcing member for preventing bending of the chassis base, and signal transmitting means mounted on the reinforcing member.

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