JP3187406B2 - DC plasma display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION

The present invention relates to a DC plasma display device.

[Prior art]

In a flat panel display device, it has been proposed to simultaneously drive a plurality of rows of electrodes in order to maintain the resolution and brightness when the size is increased. One of them is a DC type plasma display device disclosed in Japanese Patent Publication No. 46-884. FIG. 2 shows the arrangement of the display cells used in this method and the connection with the electrodes. As shown in the drawing, two column electrodes X1A and X1B are provided in each column, for example, C1, and adjacent columns, for example, display cells P11 and P21 in the same column of R1 and R2 have different column electrodes X1.
Connected to A and X1B. Then, adjacent rows, for example, row electrodes Y1 and Y2 of R1 and R2 are simultaneously driven by simultaneously applying voltages to these rows.

[Problems to be solved by the invention]

In the above-mentioned DC type plasma display device, two electrodes are provided in each column, and in order to connect each electrode to every other display cell, it is necessary to bypass other display cells. There is a problem that it is difficult to make such an electrode. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and its object is to make it easy to produce and to simultaneously drive a plurality of rows of electrodes. Another object of the present invention is to provide a DC plasma display device having the same.

[Means for Solving the Problems]

In the DC plasma display device according to the present invention, the plurality of display cells are arranged in the row direction and the column direction, and the display cells in adjacent rows are shifted from each other in the column direction, so that these adjacent display cells are adjacent to each other. The display cells of the rows constitute different columns, and the display cells of each row are divided into an upper block and a lower block, and a row electrode commonly connected to the display cells of each row of the upper block. A column electrode commonly connected to display cells of each column of the upper block, a row electrode commonly connected to display cells of each row of the lower block, and a common connection to display cells of each column of the lower block. And the driving means for simultaneously driving the row electrodes of two adjacent rows of the upper block and the row electrodes of two adjacent rows of the lower block, respectively. Those were example.

【Example】

FIG. 1 shows an arrangement of display cell arrays and connection of electrodes in a DC plasma display device according to one embodiment of the present invention. This display cell array is shown in the figure for simplicity.
Assume 16 rows and 16 columns. However, in an actual device, for example, it is configured as a display cell array of about 400 rows × 640 rows. As shown, the display cell array includes a plurality of display cells P0101 to P0101 arranged along row directions R01 to R16 of row electrodes Y01 to Y16 and column directions C01 to C16 of column electrodes X01A, X01B to X16A, X16B. It has P1616. Row electrode Y0
1 to Y16 are commonly connected to eight display cells arranged in the row direction. For example, the row electrode Y01 is
The row electrode Y02 is commonly connected to the eight display cells P0201 to P0216 in the row R02, and the row electrode Y02 is commonly connected to the eight display cells P0202 to P0216 in the row R02. These display cell arrays are divided into an upper block B1 and a lower block B2, and column electrodes X01A to X16A are provided for the upper block B1, and column electrodes X01B to X16B are provided for the lower block B2. Electrode X01A or
Although the lower end of X16A and the upper ends of column electrodes X01B to X16B are close to each other, they are separated and insulated from each other. For example,
The column electrodes X01A to X16A are commonly connected to four display cells arranged in the column direction of the upper block B1, and the column electrodes X01B to X16B are four display cells arranged in the column direction of the lower block B2. Are connected in common. Each of the electrodes Y01, Y03,... Y of the odd-numbered rows R01, R03,.
15 is a first row electrode drive circuit taken out from the left end
Connected to RD1. On the other hand, even-numbered rows R02, R04,
The electrodes Y02, Y04,... Y16 of... R16 are taken out from the right end and connected to the second row electrode drive circuit RD2. Further, the column electrodes X01A to X16A of all the columns C01 to C16 of the upper block B1 are taken out from the upper end portion and are taken out of the first block.
Column electrode drive circuit CD1. On the other hand, the column electrodes X01B to X01B of all the columns C01 to C16 of the lower block B2.
X16B is taken out from the lower end and connected to the second column electrode drive circuit CD2. The row electrodes Y01 to Y16 are cathode electrodes and scanning electrodes, while the column electrodes X01A, X01B to X16A, X16B
Is an anode electrode and a data electrode. P0101 and P0202 which are display cells of adjacent rows, for example, R01 and R02
Are shifted from each other in the column direction, and form different columns C01 and C02. Then, by the row electrode driving circuits RD1 and RD2 cooperating with each other by a control circuit (not shown), the display cells of two adjacent rows of the upper block B1 and the display cells of two adjacent rows of the lower block B2 (that is, four rows) are displayed. Are simultaneously driven. That is, for example, the rows R01 and R02 and R09 and R10 are driven at the same time, and then the rows R03 and R04 and R11 and R12 are driven at the same time. On the other hand, corresponding to the simultaneous driving of the four rows described above, the upper block B1 and the lower block B1 are driven by the column electrode driving circuits CD1 and CD2.
All the column electrodes X01A to X16A and X01B to X16B of B2 are simultaneously driven. However, the contents of signals (video signals) used to drive each column electrode are different from each other. FIG. 3 is a diagram showing a panel on which a cell array is formed and external terminals formed thereon. In FIG. 1, reference numeral 1 denotes a rear plate, and reference numerals 2a to 2d denote upper odd-row external terminals, upper even-row external terminals, lower odd-row external terminals, and lower even-row external terminals, respectively, formed on the rear plate 1.
External terminal extracted from the left end of the upper block B1
2a is an external terminal 2b connected to the odd-numbered row electrodes of the upper block b1 and taken out from the right end of the upper block B1.
Are connected to the even-numbered row electrodes of the upper block B1. The external terminal 2c extracted from the left end of the lower block B2 is connected to an odd-numbered row electrode of the lower block B2, and the external terminal 2d extracted from the right end of the lower block B2 is connected to the lower block B2. Are connected to even-numbered row electrodes. Reference numeral 3 denotes a front plate made of glass, 4a and 4b denote upper column electrode external terminals and lower column electrode external terminals formed on the front plate 3, and external terminals taken out from the upper end of the upper block B1. 4a is connected to the column electrode of the upper block B1, and the external terminal 4b taken out from the lower end of the lower block B2 is connected to the column electrode of the lower block B2. FIG. 4 shows the DC plasma display device of FIG.
FIG. 3 is a cross-sectional view showing details of the cell array when configured as a DC type color gas discharge panel. On the rear plate 1, a trigger electrode 11 is formed. A dielectric layer 12 is formed on the trigger electrode 11, and a row electrode (cathode electrode) 13 is formed thereon. Row electrode
13 is the same as the row electrodes Y01 to Y16 in FIG.
The row electrodes 13 extend in a direction perpendicular to the plane of FIG. A partition wall 14 extending in parallel with the row electrode 13 is provided between adjacent row electrodes 13. The trigger electrode 11 is for generating a trigger discharge as an auxiliary discharge, and has a configuration in which the row electrode 13 and the trigger electrode 11 face each other with the dielectric layer 12 interposed therebetween. A column electrode (anode electrode) 15 is formed on the front plate 3. The column electrodes 15 correspond to the column electrodes X01A and X01B shown in FIG.
X16A and X16B, and extend in a direction parallel to and horizontal to the plane of FIG. Thus, the column electrodes 15 extend in a direction orthogonal to the row electrodes 13.
On the column electrode 15, a conductive phosphor layer 16 is formed. The top 14a of the partition 14 is in contact with the conductive phosphor layer 16.
At the position where the row electrode 13 and the column electrode 15 intersect, the discharge space
17 are formed, and discharge spaces 17 adjacent in the column direction are separated from each other by partition walls 14. When a discharge occurs in the discharge space 17,
The ultraviolet light excites the phosphor layer 16 to emit light. The emitted light passes through the column electrode (transparent electrode) 15 and the front plate (glass) 3 and goes outside. Next, an example of a method of manufacturing the DC plasma display device shown in FIGS. 1, 3 and 4 will be described. First, the external terminals 2a to 2d are formed on the back plate 1.
Next, the trigger electrode 11 is formed. For this, for example, a silver thick film (DS-5002, manufactured by Okuno Pharmaceutical Co., Ltd.) is used. Next, the dielectric layer 12 is formed. For this, for example, a glass paste is used. Next, the row electrodes 13 are formed. For example, a nickel thick film (ESL- # 2554, Electro-Science Laboratorie)
s, Inc.) at 580 ° C. Next, an overcoat (not shown) is formed. For example, a thick dielectric film (9741, manufactured by DuPont) is used for this.
Bake at 30 ° C. Next, an exhaust pipe (not shown) is formed. On the other hand, the column electrodes 15 are formed on the front plate 3. In this method, for example, a conductor pattern is formed by etching after depositing ITO (Indium-Tin-Oxide) over the entire surface. At this time, the column electrode of the upper block B1 is separated from the column electrode of the lower block B2 by also removing the boundary between the upper block B1 and the lower block B2. During the etching, the column electrodes may be continuous without being separated at the boundary between the upper block and the lower block, and may be cut later by a laser beam. This makes the seams between the blocks less noticeable. Next, a light shielding film (not shown) is formed. For example, baking is performed at 530 ° C. using a black paste (Okuno 503, manufactured by Okuno Pharmaceutical Co., Ltd.). Next, the external terminals 4a and 4b are formed. Next, a conductive phosphor layer 16 is formed. For this purpose, for example, a paste formed by mixing fine phosphor powder and fine ITO powder and further mixing it with screen oil is used. The above steps are all based on the thick film printing method except for the formation of the column electrodes. After that, the back plate and the front plate are overlapped and sealed,
At this time, gas is sealed.

【The invention's effect】

Since the present invention is configured as described above, it has the following effects. First, the electrodes of each column of the DC plasma display device have a linearly extending shape, and it is not necessary to avoid every other display cell, so that the structure is simple and the fabrication is easy. Second, row electrodes of two adjacent rows of the upper block,
In addition, since the row electrodes of two adjacent rows of the lower block, and thus four rows can be driven at the same time, the driving time of each row electrode can be increased, thereby increasing the brightness of the display cell.

[Brief description of the drawings]

FIG. 1 is a diagram showing a cell array of a DC plasma display device according to an embodiment of the present invention, FIG. 2 is a diagram showing a cell array of a conventional device, and FIG. 3 is a diagram showing external terminals of FIG. FIG. 4 is a sectional view of the display cell of FIG. P0101 to P1616 …… Display cell, R01 to R16 …… Line, C01 to C16
…… Column, Y01 to Y16,13 …… Row electrode, X01A to X16A, X01B to X1
6B, 15 ... column electrode, 17 ... discharge space.

──────────────────────────────────────────────────続 き Continuation of the front page (72) The inventor Nobumasa Higemoto 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. (56) References JP-A-1-146224 (JP, A) JP-A-52-134330 (JP, A) JP-A-63-163396 (JP, A) JP-A-52-50619 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01J 17/49 G09G 3/20 622 G09G 3/28 G09G 3/282

Claims (1)

(57) [Claims] 1. A plurality of display cells are arranged in a row direction and a column direction, and display cells in adjacent rows are shifted from each other in a column direction, so that display cells in these adjacent rows are different from each other. A display cell array in which columns are formed, and display cells in each row are divided into an upper block and a lower block; row electrodes commonly connected to display cells in each row of the upper block; A column electrode commonly connected to display cells; a row electrode commonly connected to display cells in each row of the lower block; a column electrode commonly connected to display cells in each column of the lower block; A DC electrode comprising: row electrodes of two adjacent rows of an upper block; and drive means for simultaneously driving row electrodes of two adjacent rows of the lower block. The display device.