KR20080094221A

KR20080094221A - Plasma display device

Info

Publication number: KR20080094221A
Application number: KR1020070038365A
Authority: KR
Inventors: 심수석
Original assignee: 엘지전자 주식회사
Priority date: 2007-04-19
Filing date: 2007-04-19
Publication date: 2008-10-23

Abstract

A plasma display apparatus is provided to reduce the rework time in an error process by implementing test pins in a data IC of flexible circuit boards which connect a plasma display panel with a data drive board. A plasma display apparatus includes a plasma display panel, a data drive board, and plural flexible circuit boards(300). The data drive board is disposed in a rear surface of the plasma display panel. The flexible circuit boards connect the plasma display panel with the data drive board and include a data IC(Integrated Circuit)(320) mounted thereon. The data IC further includes first and second pins(321,322) and a resistor(323) connected between the first and second pins. Adjacent flexible circuit boards are connected to each other through the first and second pins.

Description

Plasma Display Device

1 is a perspective view showing an embodiment of a plasma display panel according to the present invention;

2 is a diagram illustrating an embodiment of a panel and a driving unit of a plasma display device;

3 illustrates an embodiment of a flexible circuit board for a plasma display device according to the present invention;

4 to 5 illustrate a connection structure of flexible circuit boards for a plasma display device according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly, to a flexible circuit board connecting a plasma display panel and a panel driver.

In general, a plasma display panel (hereinafter referred to as a PDP) generates a discharge by applying a predetermined voltage to electrodes installed in a discharge space, and an image including a character or a graphic is generated by the plasma generated during gas discharge by exciting a phosphor. As a device for displaying a display device, it is easy to increase in size, light weight, and planar thickness, and provides a wide viewing angle up, down, left, and right, and realize full color and high brightness. The plasma display panel is driven by a driving signal applied from a driver. The data IC for driving the plasma display panel is mounted on a flexible circuit board connecting the panel and the driver. For example, the data IC uses either a Chip on Film (COF) type or a Tape Carrier Package (TCP) type as a package.

Such a flexible circuit board is difficult to check a bad state in the manufacture of the PDP, and since the PDP is actually driven after mounting the flexible circuit board, it is possible to determine the connection state. When it is bad, there is a difficulty in remanufacturing, and waste time and money.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a plasma display apparatus which can check a defect and a connection state when a flexible circuit board connecting a panel and a driving unit is installed. have.

Plasma display device according to the present invention for solving the above technical problem, the plasma display panel; A data driver board disposed on a rear surface of the panel; And a plurality of flexible circuit boards connecting the panel and the data driver board and having a data IC mounted thereon, the plasma display device comprising: first and second pins further formed on the data IC; A resistor is connected between the first and second pins, and the flexible circuit boards adjacent to each other are connected by the first and second pins.

In the flexible circuit boards adjacent to each other, it is preferable that the second pin of one flexible circuit board and the first pin of the other flexible circuit board are connected.

At least one of the first and second pins of the flexible circuit board disposed at an edge of the flexible circuit boards may not be connected to the flexible circuit boards adjacent to each other.

Hereinafter, a plasma display device according to the present invention will be described in detail with reference to the accompanying drawings. 1 is a view showing an embodiment of a plasma display panel according to the present invention.

As shown in FIG. 1, the plasma display panel includes a scan electrode 11, a sustain electrode 12, a sustain electrode pair formed on the upper substrate 10, and an address electrode 22 formed on the lower substrate 20. It includes.

The sustain electrode pairs 11 and 12 generally include transparent electrodes 11a and 12a and bus electrodes 11b and 12b formed of indium tin oxide (ITO), and the bus electrodes 11b and 12b. 12b) may be formed of a metal such as silver (Ag) or chromium (Cr) or a stack of chromium / copper / chromium (Cr / Cu / Cr) or a stack of chromium / aluminum / chromium (Cr / Al / Cr). . The bus electrodes 11b and 12b are formed on the transparent electrodes 11a and 12a to reduce the voltage drop caused by the transparent electrodes 11a and 12a having high resistance.

Meanwhile, according to an exemplary embodiment of the present invention, the sustain electrode pairs 11 and 12 may not only have a structure in which the transparent electrodes 11a 12a and the bus electrodes 11b and 12b are stacked, but also the buses without the transparent electrodes 11a and 12a. Only the electrodes 11b and 12b may be configured. This structure does not use the transparent electrodes (11a, 12a), there is an advantage that can lower the cost of manufacturing the panel. The bus electrodes 11b and 12b used in this structure may be various materials such as photosensitive materials in addition to the materials listed above.

Light between the scan electrodes 11 and the sustain electrodes 12 between the transparent electrodes 11a and 12a and the bus electrodes 11b and 11c to absorb external light generated outside the upper substrate 10 to reduce reflection. A black matrix (BM, 15) is arranged that functions to block and to improve the purity and contrast of the upper substrate 10.

The black matrix 15 according to the exemplary embodiment of the present invention is formed on the upper substrate 10, the first black matrix 15 and the transparent electrodes 11a and 12a formed at positions overlapping the partition wall 21. And the second black matrices 11c and 12c formed between the bus electrodes 11b and 12b. Here, the first black matrix 15 and the second black matrices 11c and 12c, also referred to as black layers or black electrode layers, may be simultaneously formed and physically connected in the formation process, or may not be simultaneously formed and thus not physically connected. . In addition, when physically connected and formed, the first black matrix 15 and the second black matrix 11c and 12c may be formed of the same material, but when physically separated and formed, they may be formed of different materials. .

The upper dielectric layer 13 and the passivation layer 14 are stacked on the upper substrate 10 having the scan electrode 11 and the sustain electrode 12 side by side. Charged particles generated by the discharge are accumulated in the upper dielectric layer 13, and the protective electrode pairs 11 and 12 may be protected. The protective film 14 protects the upper dielectric layer 13 from sputtering of charged particles generated during gas discharge, and increases the emission efficiency of secondary electrons.

In addition, the address electrode 22 is formed in a direction crossing the scan electrode 11 and the sustain electrode 12. In addition, the lower dielectric layer 23 and the partition wall 21 are formed on the lower substrate 20 on which the address electrode 22 is formed.

In addition, phosphor layers are formed on the surfaces of the lower dielectric layer 23 and the partition wall 21. The partition wall 21 has a vertical partition wall 21a and a horizontal partition wall 21b formed in a closed shape, and physically distinguishes discharge cells, and prevents ultraviolet rays and visible light generated by the discharge from leaking into adjacent discharge cells.

In an embodiment of the present invention, not only the structure of the partition wall 21 illustrated in FIG. 1, but also the structure of the partition wall 21 having various shapes may be possible. For example, a channel in which a channel usable as an exhaust passage is formed in at least one of the differential partition structure, the vertical partition 21a, or the horizontal partition 21b having different heights of the vertical partition 21a and the horizontal partition 21b. A grooved partition structure having a groove formed in at least one of the type partition wall structure, the vertical partition wall 21a, or the horizontal partition wall 21b may be possible.

Here, in the case of the differential partition wall structure, the height of the horizontal partition wall 21b is more preferable, and in the case of the channel partition wall structure or the groove partition wall structure, it is preferable that a channel is formed or the groove is formed in the horizontal partition wall 21b. something to do.

Meanwhile, in one embodiment of the present invention, although the R, G and B discharge cells are shown and described as being arranged on the same line, it may be arranged in other shapes. For example, a Delta type arrangement in which R, G, and B discharge cells are arranged in a triangular shape may be possible. In addition, the shape of the discharge cell may be not only rectangular, but also various polygonal shapes such as a pentagon and a hexagon.

In addition, the phosphor layer is emitted by ultraviolet rays generated during gas discharge to generate visible light of any one of red (R), green (G), and blue (B). Here, an inert mixed gas such as He + Xe, Ne + Xe and He + Ne + Xe for discharging is injected into the discharge space provided between the upper / lower substrates 10 and 20 and the partition wall 21.

2 is a diagram illustrating an embodiment of a panel and a driving unit of a plasma display device.

Referring to FIG. 2, the plasma display apparatus includes a panel 100 for displaying an image and a driver 200 for driving by applying a driving signal to the panel 100.

The driving unit 200 includes a Y board 210 for applying a scan driving signal to a scan electrode of the panel 100, a Z board 220 for applying a sustain driving signal to a sustain electrode, and an X for applying an address driving signal to an address electrode. The board 230 is mounted, and the Y board 210, the Z board 220 and the X board 230 use a high voltage to generate a discharge between the electrodes of the panel 100, and the high voltage and the low voltage are repeated. Many switch elements such as FETs and transistors for generating and applying driving pulses are mounted.

In order to transmit the driving signal generated by the driving unit 200 to the panel 100, a flexible circuit board is provided between the panel 100 and the driving unit 200 to provide electrodes and driving boards 210 of the panel 100. , 220, 230).

In particular, a tape carrier package (TCP) or a chip on film (COF) may be used as the flexible circuit board 300 provided between the X board 230 of the driving unit 200 and the address electrode of the panel 100. TCP is used mainly for ease of operation and cost reduction.

Meanwhile, in the driving unit 200 of the plasma display apparatus illustrated in FIG. 2, two X boards 230 are mounted on the upper and lower sides of the driving unit 200, but the present invention is not limited thereto. When driven, it may be mounted only on any one of the upper and lower sides of the driving unit 200.

3 is a view showing an embodiment of a flexible circuit board for a plasma display device according to the present invention.

Referring to FIG. 3, the flexible circuit board 300 for a plasma display apparatus according to the present invention includes a connector 330 connected to a driver and data for driving a plasma display panel when a driving data signal is applied to the connector 330. IC 320 is bonded onto base film 310.

The data IC 320 is for applying an address driving signal generated from the X board to the address electrode, and may be manufactured in various specifications according to the needs of those skilled in the art. The data IC 320 according to the present invention further forms two pins (Pin, 321, and 322) at the time of its manufacture, and installs a resistor therebetween. As described above, the two pins 321 and 322 are used to check the connection state of the flexible circuit boards 300 when fabricating the plasma display apparatus, and may be formed at the edge of the data IC 320. In such a case, it is easy to connect using two additional pins 321 and 322 of the data IC 320 mounted on the flexible circuit board 300 adjacent to each other, and check the connection state using a multimeter or the like. Work can be simple.

As shown in Figs. 4 to 5, the flexible circuit boards A1, A2, ..., An for the plasma display device according to the present invention use the two pins added to each of the flexible circuit boards adjacent to each other. I can connect it. At this time, it is preferable that the pin located at the outer side of the two pins of the flexible circuit boards A1 and An installed at the edge portion of the panel is not used for connection with the flexible circuit boards. This is for checking the connection state after connecting all the flexible circuit boards A1, A2, ..., An. Referring to FIG. 4, a connection line is formed from a pin formed in the data IC of each flexible circuit board to a connector side, and thus may be connected to adjacent flexible circuit boards. In such a case, it is possible to check the defective state of each connector of the flexible circuit board, and if the failure occurs by checking the connecting lines formed at the edge part with a multimeter, etc. It can be found easily. In this case, as shown in FIG. 4, the connection lines extending from the pins may extend to the connector side and be connected to adjacent flexible circuit boards. In such a case, it is possible to check the defective state of the connector of the flexible circuit board. Alternatively, as shown in FIG. 5, the connecting lines extending from the pins may extend to opposite sides of the connector to be connected to adjacent flexible circuit boards, and in such a case, it is possible to check a bad state of the output of the flexible circuit board.

Although preferred embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that the present invention may be made without departing from the spirit and scope of the invention as defined in the appended claims. It will be appreciated that various modifications or changes can be made. Accordingly, changes in the future embodiments of the present invention will not depart from the technology of the present invention.

Plasma display device of the present invention configured as described above can be connected to the flexible circuit boards adjacent to each other by adding a test pin to the data IC provided in the flexible circuit boards connecting the panel and the driving unit, accordingly, the plasma display It is possible to check the connection of the flexible circuit boards in the manufacture of the device, thereby reducing the rework time in the event of a failure, and reduce the manufacturing cost.

Claims

A plasma display panel;

A data driver board disposed on a rear surface of the panel; And

A plasma display device comprising a plurality of flexible circuit boards connecting the panel and the data driver board and mounted with a data IC,

First and second pins further formed in the data IC; A resistor connected between the first and second pins,

And the flexible circuit boards adjacent to each other are connected by the first and second pins.

The method according to claim 1,

In the flexible circuit boards adjacent to each other,

And the second pin of one of the flexible circuit boards and the first pin of the other of the flexible circuit board are connected to each other.

The method according to claim 1,

And at least one of the first and second pins of the flexible circuit board disposed at an edge of the flexible circuit boards is not connected to the flexible circuit board adjacent to each other.