JP2011044289A - Plasma display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plasma display device reducing the number of circuit boards, resulting in reduced cost and effective use of a space on the back side of a chassis member. <P>SOLUTION: The plasma display device includes a plasma display panel (PDP) 10 where a front plate 21 having scanning sustaining electrodes and common sustaining electrodes and a back substrate 31 having address electrodes are arranged opposing each other to form a discharge space therebetween, and the chassis member 200 holding the PDP 10 on the front side and having the circuit boards arranged on the back side for driving the PDP 10. The lead terminals of each of the scanning sustaining electrodes, the common sustaining electrodes and the address electrodes, and the circuit boards 211, 213 for giving potential to the lead terminals are arranged to be point-symmetric with the PDP 10 as an axis, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a plasma display apparatus using a plasma display panel (hereinafter also referred to as PDP) as a display device.

The types of PDPs are broadly classified according to drive format and discharge format. There are two types of driving, AC type and DC type, and there are two types of discharge types, a surface discharge type and a counter discharge type. Due to the structure suitable for high definition, the large screen, and the simplicity of manufacturing, the mainstream of the PDP is currently the AC type surface discharge type with a three-electrode structure.
A typical structure of a surface discharge type PDP is a sealing material in which a pair of substrates (a front substrate and a back substrate) made mainly of glass are arranged opposite to each other with a discharge space in between, and are arranged around both substrates. The inner space is sealed and discharge gas is sealed in the discharge space.
The front substrate is provided with a plurality of pairs of display electrodes each consisting of a scan sustain electrode and a common sustain electrode on one main surface of the substrate glass, and a dielectric layer and a protective layer covering the pair are sequentially formed.

  On the other hand, the rear substrate is provided with a plurality of data electrodes on one main surface of the substrate glass, and a barrier rib having a cross-like shape for partitioning the discharge space for each discharge cell. A discharge cell is formed in a position surrounded by the barrier ribs so that the pair of display electrodes and one data electrode are opposed to each other with the discharge space interposed therebetween. On the surface of the back substrate surrounded by the barrier ribs, a phosphor layer that receives ultraviolet rays generated at the time of discharge and emits fluorescent light in any one of red, green, and blue is disposed.

In the PDP having such a configuration, vacuum ultraviolet light having a short wavelength is generated by discharge generated in the discharge space during driving, thereby exciting the phosphor. And color display is performed when the discharge cell corresponding to each color of red, green, and blue emits predetermined visible light.
The above-mentioned PDP is made of a metal such as aluminum and is held on the front side of the chassis member. On the back side of the chassis member, a circuit board constituting a drive circuit for causing the PDP to emit light is electrically connected to the PDP. The plasma display device is configured by being mounted (see, for example, Patent Document 1).

JP 2003-131580 A

  By the way, in the conventional plasma display device, as shown schematically in FIG. 4, the electrode arrangement viewed from the back side of the PDP 100, the lead terminals of the scan sustain electrodes SC <b> 1 to SCn are on the left side of the PDP 100, and the common sustain electrodes Are arranged on the right side of the PDP, and the extraction terminals of the address electrodes D1 to q are arranged on the lower side of the PDP.

  In general, a drive voltage having a different voltage and waveform is applied to each of the scan sustain electrode, the common sustain electrode, and the address electrode, so that a circuit for applying the drive voltage to each of them is configured. The electronic parts to be used are usually different. Specifically, in the conventional plasma display device, as shown schematically in a plan view in FIG. 5, on the back side of the chassis member 300, the scanning sustain electrode lead terminal 301, the common sustain electrode lead terminal 302, and the address A circuit board is separately connected to each of the electrode lead terminals 303. Therefore, each circuit board is arranged on the left side (circuit board 311), the right side (circuit board 312), and the lower side (circuit boards 313 and 314) according to the arrangement of the lead terminals of the respective electrodes. It has been arranged.

On the other hand, cost reduction is required in plasma display devices. Therefore, a reduction in the number of parts is required, and the above-described circuit board is also the object.
The present invention has been made in view of such a situation, and provides a plasma display device that realizes a reduction in the number of circuit boards, thereby enabling low cost and effective use of the space on the back side of the chassis member. Objective.

  In order to achieve the above object, a plasma display apparatus of the present invention has a front plate having a scan sustain electrode and a common sustain electrode, and a rear substrate having an address electrode, facing each other so that a discharge space is formed therebetween. A plasma display panel, and a chassis member that holds the plasma display panel on the front side and a circuit board for driving the plasma display panel on the back side. A part of the terminals are arranged on the right side of the plasma display panel and the remaining lead terminals are arranged on the left side of the plasma display panel so as to be symmetric with respect to the plasma display panel. , A part of the drawer terminal that aggregated it is on the right of the plasma display panel The remaining aggregated lead terminals are arranged on the left side of the plasma display panel so as to be point-symmetric with respect to the plasma display panel, and the address electrodes have a part of the lead terminals of the plasma display panel. On the upper side of the display panel, the remaining lead terminals are arranged on the lower side of the plasma display panel so as to be symmetric with respect to the plasma display panel, and the scan sustain electrodes, the common sustain electrodes, and the addresses The circuit board for applying a potential to the electrodes is arranged in a point-symmetric manner in accordance with the point-symmetric arrangement of the scanning sustain electrodes, the common sustain electrodes, and the lead terminals of the address electrodes.

  According to the present invention, it is possible to provide a plasma display device that can realize a reduction in the number of circuit boards, thereby enabling low cost and effective use of the space on the back side of the chassis member.

1 is an exploded perspective view showing a schematic structure of a PDP used in a plasma display device according to an embodiment of the present invention. It is a figure which shows typically the electrode arrangement | sequence of PDP used for the plasma display apparatus by one embodiment of this invention. It is a top view which shows schematic structure of the plasma display apparatus by one embodiment of this invention. It is a figure which shows typically the electrode arrangement | sequence of PDP used for the conventional plasma display apparatus. It is a top view which shows schematic structure of the conventional plasma display apparatus.

Hereinafter, a plasma display device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing a schematic structure of a PDP 10 used in a plasma display device according to an embodiment of the present invention.
On the front plate 21 made of glass, a plurality of display electrode pairs 28 each including a scan sustain electrode 22 and a common sustain electrode 23 are formed. A dielectric layer 24 is formed so as to cover the scan sustain electrode 22 and the common sustain electrode 23, and a protective layer 25 is formed on the dielectric layer 24. A plurality of address electrodes 32 are formed on the back plate 31, a dielectric layer 33 is formed so as to cover the address electrodes 32, and a grid-like partition wall 34 is formed thereon. On the side surface of the partition wall 34 and on the dielectric layer 33, a phosphor layer 35 that emits light of each color of red (R), green (G), and blue (B) is provided.

  The front plate 21 and the back plate 31 are arranged to face each other so that the display electrode pair 28 and the address electrode 32 intersect each other with a minute discharge space interposed therebetween, and the outer peripheral portion is sealed with a sealing material such as glass frit. It is worn. For example, a mixed gas of neon and xenon is enclosed in the discharge space as a discharge gas. In the present embodiment, a discharge gas with a xenon partial pressure of 10% is used to improve luminance. The discharge space is partitioned into a plurality of sections by partition walls 34, and discharge cells are formed at the intersections between the display electrode pairs 28 and the address electrodes 32. These discharge cells discharge and emit light to display an image.

Note that the structure of the PDP 10 is not limited to that described above, and for example, a structure having a stripe-shaped partition may be used.
FIG. 2 is a diagram schematically showing an electrode arrangement of the PDP 10 used in the plasma display device according to the embodiment of the present invention, as viewed from the back side. The PDP 10 includes n scan sustain electrodes SC1 to SCm and SCm + 1 to SCn (scan sustain electrodes 22 in FIG. 1) that are long in the row direction, and n common sustain electrodes SS1 to SSm and SSm + 1 to SSn (common to FIG. 1). It has a sustain electrode 23). Note that the common sustain electrodes SS1 to SSm are aggregated in the SSU as lead terminals, and the common sustain electrodes SSm + 1 to SSn are gathered in the SSD as lead electrodes.

Further, the PDP 10 has q address electrodes D1 to Dp and Dp + 1 to Dq (address electrodes 32 in FIG. 1) that are long in the column direction. Discharge cells are formed at the intersection of one display electrode pair and one address electrode, and n × q discharge cells are formed in the discharge space.
The lead terminals of the respective electrodes are distributed in the following manner on the top, bottom, left, and right sides of the PDP. That is, for example, SC1 to SCm and SSD (SSm + 1 to SSn) are on the right side of the PDP 10, SCm + 1 to SCn and SSU (SS1 to SSm) are on the left side of the PDP 10, D1 to Dp are above the PDP 10, and Dp + 1 to Dq are below the PDP 10. In this structure, the lead terminals are distributed on the side.

With the above-described configuration, SC1 to SCm and SCm + 1 to SCn, SSD (SSm + 1 to SSn) and SSU (SS1 to SSm), and D1 to Dp and Dp + 1 to Dq are respectively PDP10. Is arranged at a point-symmetrical position with respect to the axis.
In order to equalize the load when driving the PDP 10, it is desirable that n = 2m, q = 2p, that is, the PDP 10 is divided into two parts in the vertical and horizontal directions.

FIG. 3 is a plan view showing the schematic structure of the plasma display device according to the embodiment of the present invention, as viewed from the back side.
The above-described PDP 10 is held on the front side of the chassis member 200 made of metal such as aluminum or iron (it is not visible in the figure because it is located on the back side of the page). Further, a circuit board such as an integrated circuit board 211 and an extension board 213 is fixed to the rear side (front side of the paper) of the chassis member 200 by a method such as screwing, and is usually electrically connected to the lead terminal of the PDP 10 via the FFC. Has been.

  Here, as described with reference to FIG. 2, in the PDP 10 according to the embodiment of the present invention, the lead terminals of the scan sustain electrodes SC1 to SCm and the scan sustain electrodes SCm + 1 to SCn having the same function are provided. In addition, a lead terminal SSU that consolidates the common sustain electrodes SS1 to SSm, a lead terminal SSD that consolidates the common sustain electrodes SSm + 1 to SSn, a lead terminal for the address electrodes D1 to Dp, and a lead terminal for the address electrodes Dp + 1 to Dq Are arranged at point-symmetrical positions about the PDP 10 as an axis. Therefore, it is possible to share a circuit board by combining them.

  That is, for example, a group of SC1 to SCm and SSD (SSm + 1 to SSn) having a lead terminal on the right side of the PDP 10 and D1 to Dp having a lead terminal on the upper side of the PDP 10 is formed as one set, and is drawn to the left side of the PDP 10 By handling a set of SCm + 1 to SCn and SSU (SS1 to SSm) with terminals and Dp + 1 to Dq with lead terminals on the lower side of the PDP 10 as one set, each set is symmetric with respect to the PDP 10 as an axis. Will be placed in position. Thereby, SC1 to SCm and SSD (SSm + 1 to SSn), FFC (Flexible Flat Cable) and circuit board for D1 to Dp, respectively, and FFC for SCm + 1 to SCn, SSU (SS1 to SSm) and Dp + 1 to Dq, respectively. The circuit board can be shared.

  In FIG. 3, as an example, a common scan sustaining electrode FFC201 is used as an FFC for SC1 to SCm and SCm + 1 to SCn, and a common common as an FFC for SSD (SSm + 1 to SSn) and SSU (SS1 to SSm). As the circuit board to which the sustain electrode FFC 202 is used, the common address electrode driver / FFC 203 is used as the FFC for D1 to Dp and Dp + 1 to Dq, and the above FFC is connected, the common integrated circuit board 211 is also used. An example in which a circuit board is formed by combining the extension board 213 and the extension board 213 is shown.

  As shown in FIG. 3, in the plasma display device according to the embodiment of the present invention, the scan sustaining electrode FFC201 and the common sustaining are respectively provided from SC1 to SCm and SSD (SSm + 1 to SSn) having a lead terminal on the right side of the PDP 10. The electrode FFC 202 and SCm + 1 to SCn and SSUs (SS1 to SSm) having a lead terminal on the left side of the PDP 10 are respectively connected to the scan sustain electrode FFC 201, the common sustain electrode FFC 202, and the lead terminal D1 is located on the upper side of the PDP 10 The address electrode driver / FFC 203 is pulled out from Dp, and the address electrode driver / FFC 203 is also pulled out from Dp + 1 to Dq having a lead terminal on the lower side of the PDP 10, and fixed to the rear side of the chassis member 200. Integrated circuit board 11 and the extension board 213 has a configuration that is connected in accordance with each set.

  Thus, SC1 to SCm, SSD (SSm + 1 to SSn), and Dp + 1 to Dq are grouped together, and SCm + 1 to SCn, SSU (SS1 to SSm), and D1 to Dp are separated from the electrodes. By treating them as one set, each other set is arranged at a point-symmetrical position about the PDP 10 as an axis. For this reason, it becomes possible to make the circuit board for applying the driving voltage to each pair of lead terminals into a circuit board combining the integrated circuit board 211 and the extension board 213, which is a common circuit board. . Therefore, in the configuration of the conventional plasma display device, three different types of circuit boards are required for each of the scan electrode, the sustain electrode, and the address electrode, and a single circuit board (an integrated circuit board 211, an extension board 213, and Circuit board).

As described above, according to the plasma display device according to the embodiment of the present invention, it is possible to improve the development efficiency, simplify the manufacturing process and the mounting process, and procure a large number of materials to be used by sharing the circuit board. Thus, the cost of the product can be reduced.
Further, by improving the design accuracy, a product with higher reliability can be obtained.
In addition, since the arrangement positions of the lead terminals are symmetrical with respect to each other, the distribution of the drive signal to the PDP 10 becomes more uniform, and the image quality is further improved.

In addition, since the number of circuit boards can be reduced, it is possible to rationalize the connection wiring between the boards, and to suppress the generation of radiation noise emitted from the connection wiring.
Furthermore, since it becomes possible to obtain a space in which no circuit board is arranged on the chassis member, a mounting portion of a stand for arranging another circuit board or holding the plasma display device is provided in the space. It can be used as an area, and design with a high degree of freedom is possible in terms of functionality and design.

  In the plasma display device described above, the configuration including the integrated circuit board 211 and the extension board 213 is shown as an example of the circuit board. However, a data driver circuit that applies address discharge drive pulses to the address electrodes is provided in the integrated circuit board 211. By mounting, the circuit board configuration can be configured by only one circuit board, which is preferable because the number of components such as the circuit board can be further reduced.

  As described above, the present invention is useful for providing a large-screen, high-definition plasma display device.

10 Plasma display panel (PDP)
21 Front plate 22 Scan sustain electrode 23 Common sustain electrode 31 Back plate 32 Address electrode 200 Chassis member

Claims (1)

A plasma display panel in which a front plate having a scan sustain electrode and a common sustain electrode and a rear substrate having an address electrode are arranged to face each other so that a discharge space is formed therebetween;
The plasma display panel is held on the front side, and a chassis member on which a circuit board for driving the plasma display panel is disposed on the back side,
The scan sustaining electrode is divided so that a part of the lead terminal is on the right side of the plasma display panel and the other lead terminal is on the left side of the plasma display panel, and is symmetrical with respect to the plasma display panel. Arranged,
The common sustain electrode is point-symmetrical with respect to the plasma display panel, with a part of the lead terminals aggregated on the right side of the plasma display panel and the remaining aggregated lead terminals on the left side of the plasma display panel. Divided and arranged,
The address electrodes are divided so that a part of the lead terminals is symmetric with respect to the plasma display panel, with a part of the lead terminals on the upper side of the plasma display panel and the remaining lead terminals on the lower side of the plasma display panel. Arranged,
A circuit board that applies a potential to the scan sustain electrode, the common sustain electrode, and the address electrode is arranged point-symmetrically according to the point-symmetric arrangement of the scan sustain electrode, the common sustain electrode, and the lead terminal of the address electrode. A plasma display device characterized by comprising:

Images