JP2007240974A - Method for manufacturing plasma display device and plasma display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To standardize a flexible wiring substrate which connects a display panel part and a drive circuit board in at least two kinds of plasma display devices with specifications of the display panel part different from each other. <P>SOLUTION: In a method for manufacturing at least two kinds of plasma display devices whose specifications of display panel parts are different from each other, each plasma display device is formed of: a display panel part consisting of a front substrate having a plurality of lines of display electrode and a rear substrate having a plurality of columns of address electrode; a drive circuit part; and first and second flexible wiring substrates which drive the display electrodes and the address electrodes by connecting them to the drive circuit part, respectively, wherein a first connection terminal for performing relay connection between the display electrodes and the first flexible wiring board is formed on the rim of each front substrate, a second connection terminal for performing relay connection between the address electrodes and the second flexible wiring substrate is formed on the rim of each rear substrate and at least one of the first and second connection terminals is formed so that the number and arrangement of terminals become the same between both plasma display devices. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method of manufacturing a plasma display device and a plasma display device manufactured by the method.

  In general, in a plasma display device, an ultraviolet ray is generated by gas discharge, and a phosphor is excited by the ultraviolet ray to emit light to perform color display. And the display cell divided by the partition on the board | substrate is provided, and it has the structure that a fluorescent substance layer is formed in this.

  The structure of the display panel portion of such a plasma display device has a pair of display electrodes adjacent in parallel on one substrate, and address electrodes and partitions arranged in a direction intersecting the display electrodes on the other substrate. And having a phosphor layer.

  Then, by applying a write pulse between the address electrode and the display electrode, an address discharge is performed between the address electrode and the display electrode, a discharge cell is selected, and then alternately inverted between adjacent display electrode pairs. By applying a periodic sustain pulse, surface discharge is performed and a predetermined display is performed.

In such a plasma display device, the terminal extraction portion (connection terminal) of the display electrode and the address electrode is a unit of the number of terminals of one flexible wiring board (also referred to as a flexible cable, hereinafter referred to as FPC). It is divided into a plurality of connection blocks, and an FPC is connected to each of the connection blocks (see, for example, Patent Document 1).
JP-A-2005-340131

  However, when manufacturing a plurality of types of devices as a product series of such plasma display devices, if the display panel unit is different in resolution and driving method, even if the display panel unit has the same screen size, the connection terminal Number and arrangement change. Therefore, a new FPC must be designed in response to changes in the wiring pattern including the number and arrangement of connection terminals. Along with this, there is a problem that many types of FPCs must be stocked.

  The present invention has been made in consideration of such circumstances, and products having different manufacturing methods and specifications of plasma display devices that can commonly use the same FPC even if the resolution and driving method are different in the product series. It is an object of the present invention to provide a plasma display device having a connection terminal array that can share an FPC between series, thereby reducing the manufacturing cost.

  The present invention relates to a method of manufacturing at least two types of plasma display devices having different specifications of the display panel unit, wherein each plasma display device includes a front substrate having a plurality of rows of display electrodes and a rear substrate having a plurality of columns of address electrodes. A display panel unit, a drive circuit unit, and first and second flexible wiring boards that are driven by connecting the display electrode and the address electrode to the drive circuit unit. A first connection terminal for relay connection to the first flexible wiring board is formed, and a second connection terminal for relay connection of the address electrode and the second flexible wiring board is formed on the periphery of each back substrate. At least one of the first connection terminal and the second connection terminal is a plasma display in which the number and arrangement of the terminals are the two types. There is provided a method of manufacturing a plasma display device which is formed to be the same in 置間.

The specifications of the display panel unit in the two types of plasma display devices may be different in the resolution and driving method of the display panel unit.
The number and arrangement of the first connection terminals may be the same between the two plasma display devices.
The number and arrangement of the second connection terminals may be the same between the two plasma display devices.

In at least one of the plasma display devices, the address electrode may be divided at the center of the display panel portion.
In at least one of the plasma display devices, the second connection terminal may include a third connection terminal connected to one end of the plurality of address electrodes and a fourth connection terminal connected to the other end.

In one of the plasma display devices, the first connection terminal may include a terminal that is connected to the first flexible substrate but is not connected to the display electrode.
In one of the plasma display devices, the second connection terminal may include a terminal connected to the second flexible substrate but not connected to the address electrode.
The display electrode and the address electrode may be divided into a plurality of blocks, and the first and second connection terminals may be divided corresponding to each block.
This invention provides the plasma display apparatus manufactured by the said method from another viewpoint. More specifically, a rectangular front substrate having an array of display electrode pairs extending in the horizontal direction and defining a plurality of display rows, and a rectangle having an array of address electrodes extending in the vertical direction and defining a plurality of display columns Are arranged opposite to each other so that at least one end edge in the electrode extending direction of each substrate protrudes from the overlapping portion of the both substrates, and further, the protruding end edge is connected to the electrodes on these substrates. In the plasma display panel having a configuration in which electrode terminals are arranged, the electrode terminal arrangement pattern with respect to the electrodes on the at least one substrate is changed to an electrode of at least one high-order plasma display panel having more corresponding electrodes. A flexible wiring board that is formed in the same array pattern as the terminals and is connected to the electrode terminals is flexible to the higher-order panel. There is provided a plasma display panel device is characterized in that to enable shared with.

  According to the present invention, at least one of the first and second connection terminals is formed so that the number and arrangement of the terminals are the same between at least two types of plasma display devices, and thus is common between both plasma displays. A flexible wiring board can be used, and the total manufacturing cost can be reduced by reducing the types of parts used.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. This does not limit the invention.
A display panel portion of a plasma display device (PDP) to which the present invention is applied has a display area having an aspect ratio of 9:16 between two opposing substrates that are generally rectangular, and is configured by a matrix arrangement of discharge cells. A discharge is locally generated in a cell, and a phosphor layer partitioned for each cell is excited and emitted. This is composed of a pair of substrate assemblies as shown in FIG. 1, that is, a back substrate 50 and a front substrate 50a (for one pixel).

  In the front substrate 50a, electrodes X and Y extending in the lateral direction for generating surface discharge along the substrate surface are arranged on the inner surface of the front glass substrate 11 as a display electrode pair S that defines a display row. . The electrodes X and Y are each composed of a wide band-shaped transparent electrode 41 made of an ITO thin film and a narrow band-shaped bus electrode 42 made of a metal thin film.

  The bus electrode 42 is an auxiliary electrode for ensuring proper conductivity. A dielectric layer 17 is provided so as to cover the electrodes X and Y. A protective film 18 is deposited on the surface of the dielectric layer 17. Both the dielectric layer 17 and the protective film 18 are translucent.

  Next, in the rear substrate 50, the address electrodes A are arranged on the inner surface of the glass substrate 21 on the rear side in the vertical direction orthogonal to the electrodes X and Y. Between each address electrode A, one linear (or lattice) rib r is provided. It is also possible to cover the address electrode A with a dielectric layer and provide the rib r on the dielectric layer.

  In the rear substrate 50, the ribs r divide the discharge space (discharge cells) 30 for each subpixel (unit light emitting region) EU and define the gap size of the discharge space 30.

  A phosphor layer 28 of three colors R, G, and B for color display is provided so as to cover the rear side wall surface including the upper portion of the address electrode A and the side surface of the rib r.

  The rib r is made of low-melting glass and is opaque to ultraviolet rays. As a method for forming the rib r, a step of providing an etching mask by photolithography on a solid film-like low-melting glass layer and patterning by sandblasting is used.

  A display electrode S corresponds to one row in the matrix display, and one address electrode A corresponds to one column. Three columns correspond to one pixel (pixel) EG. That is, one pixel EG is composed of three subpixels EU of R, G, and B arranged in the line direction.

  By the counter discharge between the address electrode A and the electrode Y, the accumulation state of the wall charges in the dielectric layer 17 is controlled. When pulses are alternately applied to the electrodes X and Y, a surface discharge (main discharge) is generated in the subpixel EU in which a predetermined amount of wall charges exists.

  The phosphor layer 28 is excited locally by ultraviolet rays generated by surface discharge and emits visible light of a predetermined color. Of this visible light, the light transmitted through the glass substrate 11 becomes display light. Since the arrangement pattern of the ribs r is a so-called stripe pattern, the portion corresponding to each column in the discharge space 30 is continuous in the column direction across all the lines. The light emission colors of the subpixels EU in each column are the same.

  FIG. 2 is an exploded perspective view showing the configuration of the plasma display device. As shown in the figure, an aluminum chassis plate 15 is provided on the back surface of the display panel unit 11 including the front substrate 50 and the rear substrate 50a. A plurality of bosses 15 a protrude from the rear surface of the chassis plate 15.

  A plurality of circuit boards for driving the display panel unit 11, that is, display electrode drive circuit boards 21X and 21Y, address electrode drive circuit boards 22a and 22b, and display and address electrode drive circuits that receive display data from the outside A control circuit board 23 for controlling 21X, 21Y, 22a, 22b is attached to the boss 15a.

FIG. 3 is a rear view of the plasma display device.
In the figure, display electrode drive circuit boards 21X and 21Y supply a predetermined signal voltage to the electrodes X and Y of the display electrode pair S (FIG. 1) of the display panel unit 11. The address electrode drive circuit boards 22a and 22b supply a predetermined signal voltage to the address electrodes A (FIG. 1) of the display panel unit 11.

The FPC 24 connects the display electrode connection terminals (described later) of the display panel unit 11 and the display electrode drive circuit boards 21 </ b> X and 21 </ b> Y via the connector 26.
The FPC 25 connects address electrode connection terminals (described later) of the display panel unit 11 and address electrode drive circuit boards 22a and 22b via connectors 27, respectively.

  4 is a perspective view showing the address electrode drive circuit board 22a shown in FIG. 3. One end of the FPC 25 is connected to the address electrode drive circuit 22a via the connector 27. FIG. The FPC 25 is inverted 180 degrees on the outer periphery of the display panel unit 11 and the other end is thermocompression bonded to the address electrode connection terminal of the display panel unit 11 using an anisotropic conductive adhesive. The other address electrode drive circuit board 22b and the FPCs 25 and 24 of the display electrode drive circuit boards 21X and 21Y shown in FIG. 3 have the same connection structure. However, in a panel in which one electrode X of the display electrode pair S is driven in common, the same electrode group is commonly connected at one electrode lead-out edge on the substrate, and the connection form of the FPC is changed accordingly.

  FIG. 5 is an explanatory diagram of the arrangement of display electrode pairs, address electrodes, and connection terminals in the display panel 11. As shown in the figure, the electrodes X and Y constituting the plurality of display electrode pairs S are derived by dividing them into four blocks Sb, for example, 188 pieces at the left and right edge portions on the front substrate. Are divided into eight blocks Ab, for example, 384 pieces at the upper and lower end edges on the rear substrate. As is well known, the rectangular substrates are overlapped so that the two opposing edge portions of each substrate from which the electrodes are led out are projected and exposed, but only one side of each substrate in the electrode extension direction is exposed to expose the electrodes. Can also protrude.

  The left and right display electrode blocks Sb are connected to connection terminals CS provided on the left and right edges of the front substrate of the display panel 11 as terminals of the electrodes X and Y, respectively. Further, both ends of the address electrode block Ab are connected to connection terminals CA provided on the upper and lower edges of the rear substrate of the display panel 11, respectively.

  FIG. 6 is an enlarged view of the display electrode block Sb (FIG. 5) when the vertical resolution of the display panel unit 11 is increased as the highest specification. For example, one lead-out end of 188 Y electrode groups included in the display electrode block Sb is connected to all terminals of the connection terminal CS. That is, the number of Y electrodes used as scanning electrodes of the display electrode block Sb and the number of terminals of the connection terminal CS are the same.

FIG. 7 is an enlarged view of the address electrode block Ab (FIG. 5) in the case where the horizontal resolution of the display panel unit 11 is maximized. The odd-numbered all electrodes of the address electrode block Ab are respectively connected to all the terminals of the upper connection terminal CA, and the even-numbered all electrodes are respectively connected to all the terminals of the lower connection terminal CA. In either case, the number of electrodes and the number of terminals are the same.
FIG. 8 is a modification of FIG. The address electrodes are alternately connected to the terminals of the upper and lower connection terminals CA every three (for each of the emission colors R, G, and B). The resolution is the same as that shown in FIG.

FIG. 9 is an enlarged view of the address electrode block Ab in the case where the horizontal resolution of the display panel unit 11 is halved compared to that of the higher specification of FIG. The address electrode block Ab is provided with half the number of address electrodes in FIG. 7, and both ends thereof are connected to the upper and lower connection terminals CA, respectively. In this case, any one of the upper and lower connection terminals CA may be connected to the address electrode drive circuit board. The substrate size and the screen size in FIGS. 7 and 9 are substantially the same, and the arrangement pattern including the number of terminals and the pitch is also the same.
When the address electrode is disconnected, the function can be recovered by short-circuiting both ends of the disconnected address electrode externally through the connection terminal CA.

  FIG. 10 is an enlarged view of the address electrode block Ab in the case where the horizontal resolution of the display panel unit 11 is further reduced with the same screen size as that of the higher specification of FIG. The address electrode block Ab is provided with a smaller number of address electrodes than the address electrodes of FIG. 9, and both ends thereof are connected to the terminals of the upper and lower connection terminals CA, respectively. In this case, an extra terminal that is not connected to the address electrode exists as a dummy terminal in the connection terminal CA.

FIG. 11 is a modification of FIG. 9 and the number of electrodes in the address electrode block Ab does not change, but only one end of the electrode is connected to each terminal of the connection terminal CA as a so-called single scan type. In this case, the address electrode drive circuit board 22a or 22b shown in FIGS.
FIG. 12 is a modification of FIG. 9, and the number of electrodes in the address electrode block Ab does not change, but each electrode is divided at the center as a so-called dual scan compatible type. In this case, it is necessary to connect both the upper and lower connection terminals CA to the address electrode drive circuit board.

  FIG. 13 is an enlarged view of the display electrode block CS when the vertical resolution of the display panel unit 11 is made lower than that of the higher specification shown in FIG. 6 with substantially the same screen size. The display electrode block Sb is provided with a smaller number of display electrode pairs than the display electrodes of FIG. 6, and one end of these electrodes X and Y is connected to the terminal of the connection terminal CS. In this case, the connection terminal CS has an extra dummy terminal that is not connected to the display electrode.

FIG. 14 is an enlarged view of the display electrode block Sb when the vertical resolution of the display panel unit 11 is half that of the higher-order specification shown in FIG.
The display electrode block Sb is provided with half as many display electrodes as the display electrodes in FIG. 6, and one end of each of the electrodes X and Y is connected so as to share two adjacent terminals of the respective connection terminals CS. ing.

  According to the present invention, in this way, the resolution and driving method of the display panel unit 11 of the plasma display device are set according to the number of terminals and the terminal arrangement of the connection terminals CS for connecting display electrodes and the connection terminals CA for connecting address electrodes. You can change it without changing it. That is, even if the resolution and the driving method are changed, the same FPCs 24 and 25 can be used.

For example, when manufacturing plasma display devices (1) to (3) having different resolutions in series as follows,
(1) Screen size 42 inches, number of pixels 1080 dots (vertical) × 2048 dots (horizontal),
(2) Screen size 42 inches, number of pixels 1080 dots (vertical) × 1920 dots (horizontal),
(3) Screen size 42 inches, number of pixels 1024 dots (vertical) × 1024 dots (horizontal),
6 is applied to the display electrode block (1) which is the highest specification, and the one shown in FIG. 7 or FIG. 8 is applied to the address electrode block (1). The number of electrodes X and Y corresponds to the number of vertical pixels, but the number of address electrodes is three times the number of horizontal pixels. This pixel arrangement forms a screen with an aspect ratio of 9:16.
6 is applied to the display electrode block (2), which is a full high-definition specification lower than the highest level, and the address electrode block (2) shown in FIG. 7 or FIG. Reduce and apply.
The display electrode block shown in FIG. 13 is applied to the display electrode block (3), which is a lower specification of the above (1) or (2), and the one shown in FIG. 9 or 11 is applied to the address electrode block (3).
Thereby, the series of plasma display devices (1) to (3) can use the common FPCs 24 and 25.
It should be noted that the present invention can be applied assuming that the difference in several inches in the screen size indicated by the diagonal dimension of the screen is substantially the same.

It is a principal part cross-sectional perspective view of the display panel part of this invention. It is a disassembled perspective view of the plasma display apparatus of this invention. It is a rear view of the display panel part of this invention. It is a principal part perspective view of the plasma display apparatus of this invention. It is electrode arrangement explanatory drawing of the display panel part of this invention. It is explanatory drawing of the display electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention. It is explanatory drawing of the display electrode block of the display panel part of this invention. It is explanatory drawing of the address electrode block of the display panel part of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Display panel part 15 Chassis board 21X Display electrode drive circuit board 21Y Display electrode drive circuit board 22a Address electrode drive circuit board 22b Address electrode drive circuit board 23 Control circuit board 24 FPC
25 FPC
26 connector 27 connector 28 phosphor layer 30 discharge space 41 transparent electrode 42 bus electrode 50 substrate assembly (front substrate)
50a Board assembly (back board)
A address electrode r rib S display electrode X electrode Y electrode

Claims (10)

In the manufacturing method of at least two types of plasma display devices having different specifications of the display panel unit,
Each plasma display device connects a display panel unit comprising a front substrate having a plurality of rows of display electrodes and a rear substrate having a plurality of columns of address electrodes, a drive circuit unit, and display electrodes and address electrodes to the drive circuit unit. Formed from first and second flexible wiring boards to be driven,
A first connection terminal for relay-connecting the display electrode and the first flexible wiring board is formed on the periphery of each front substrate,
A second connection terminal for relay-connecting the address electrode and the second flexible wiring board is formed on the periphery of each back substrate,
At least one of the first and second connection terminals is a method for manufacturing a plasma display device, wherein the number and arrangement of terminals are formed to be the same between the two types of plasma display devices.   The method of manufacturing a plasma display device according to claim 1, wherein specifications of the display panel unit in the two types of plasma display devices differ in resolution of the display panel unit.   The method of manufacturing a plasma display device according to claim 1, wherein specifications of the display panel unit in the two types of plasma display devices are different in a driving method of the display panel unit.   The method for manufacturing a plasma display device according to claim 1, wherein the number and arrangement of one or both of the first and second connection terminals are the same between the two types of plasma display devices.   2. The device according to claim 1, wherein in at least one of the two types of plasma display devices, one or both of the first and second connection terminals include a terminal connected to a corresponding flexible substrate but not connected to a corresponding electrode. A method for manufacturing a plasma display device.   2. The method of manufacturing a plasma display device according to claim 1, wherein the display electrode and the address electrode are divided into a plurality of blocks, and the first and second connection terminals are divided corresponding to each block.   The plasma display apparatus manufactured by the method as described in any one of Claims 1-6. A rectangular front substrate having an array of display electrode pairs extending in the horizontal direction to define a plurality of display rows, and a rectangular back substrate having an array of address electrodes extending in the vertical direction to define a plurality of display columns, At least one edge in the electrode extension direction of each substrate is arranged to face each other so as to protrude from the overlapping portion of the two substrates, and electrode terminals connected to the electrodes on these substrates are arranged on the protruding edge. In the plasma display panel configured as follows:
The electrode terminal array pattern for the electrodes on the at least one substrate is formed in the same array pattern as the electrode terminals of at least one higher-order plasma display panel having more corresponding electrodes, and connected to the electrode terminals. A plasma display panel device characterized in that a flexible wiring board to be used can be shared with a flexible wiring board for a panel of a higher specification.   9. The plasma display panel according to claim 8, wherein a screen size of the plasma display panel is substantially the same as that of an upper specification panel, and the upper specification is high at a resolution determined by at least one of display rows and display columns. Plasma display panel device.   A terminal connected to the flexible wiring board corresponding to each group, in which the same number of electrode terminal rows as the upper specification provided on at least one edge of the plasma display panel are divided into a plurality of groups with the same arrangement pattern 9. The plasma display panel device according to claim 8, wherein at least one of the terminals is a dummy terminal having no corresponding electrode.

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