JP2000298451A5 - - Google Patents

Description

Next, in the "address period", only the discharge cells to be displayed are selectively discharged by selecting the matrix, and the "address discharge" is formed in the discharge cells. Specifically, as shown in FIG. 13, first, the scan pulse Vxg is sequentially applied to the row electrode Xi, and in the discharge cell to be lit, the voltage pulse VwD based on the image data is applied to the column electrode Wj. As a result, a "write discharge" is generated between the column electrode Wj and the row electrode Xi. During the address period, a sub-scanning pulse Vysc is applied to the row electrode Y. At this time, a potential difference (Vxg + Vysc) is applied between the row electrode Xi and the row electrode Yi. This potential difference (Vxg + Vysc) is a potential difference that does not start discharge by itself, but can immediately generate (transfer) “write maintenance discharge” between the row electrodes Xi and Yi triggered by the previous write discharge. By such address discharge, as described above, a positive or positive amount capable of performing maintenance discharge only by applying the subsequent maintenance pulse Vs on the surface of the dielectric layer 106A (see FIG. 10) of the discharge cell. Negative wall charges accumulate.

Following the write discharge between the electrodes Xi and Wj, a “write maintenance discharge” is generated between the row electrode Xi and the left row electrode YLi triggered by the write discharge. The transition from the write discharge to the write maintenance discharge also depends on the potential difference between the electrode pair Xi and YLi. When the sub-scanning pulse Bay1 = 60V applied to the left row electrode YLi, the potential difference between the electrode and Xi and YLi is 240V (= 60V- (-180V)), so that the above discharge transition is sufficiently generated. Can be made to. In contrast, since the right-side row electrodes YRi Ru der ground potential, the electrode pairs Xi potential difference 180V is applied, is between YRi not occur transition of the discharge.

The drive circuits 16 and 17 for the row electrodes X1 to Xn may be arranged at one place, for example, on the left side of the AC-PDP61. However, if the drive circuits 16 and 17 of the row electrodes X1 to Xn are arranged in one place, for example, concentrated on the left side of the AC-PDP61, the mounting density of the installation space on the left side of the AC-PDP61 becomes high. Therefore, as shown in FIG. 1, in the plasma display device 60, the drive circuits for the row electrodes X1 to Xn are divided and arranged on the left and right sides of the AC-PDP61.

Specifically, similarly to the AC-PDP 101, the row electrodes W1 to Wm (corresponding to the row electrodes 108 in FIG. 10) are placed on the surface of the back glass substrate 103 on the discharge space 111 side in the first direction parallel to the surface. It extends along D1 and is arranged at equal pitches in the second direction D2, which is orthogonal to the first direction D1 in the surface. Here, the first and second directions D1 and D2 are the vertical direction and the horizontal direction on the display screen of the AC-PDP71, respectively. Further, the partition walls 10 are arranged in a stripe shape along the first direction D1 like the partition walls 110 in FIG. Then, in the U-shaped groove defined by the surface of the back glass substrate 103 and the opposite side wall surfaces of the adjacent partition walls 10, the phosphor layer 109R for each emission color is formed in the U-shaped groove unit. The phosphor layer of any of 109G and 109B is arranged. A dielectric layer may be provided on the surface of the back glass substrate 103 so as to cover the column electrodes W1 to Wm, and the partition wall 10 and the phosphor layer 109 may be arranged on the dielectric layer.

On the other hand, in the front glass substrate 102, the row electrodes Xi and Yi are strip-shaped mother electrodes Xbi and Ybi extending along the second direction D2 on the surface of the substrate 102 on the discharge space 111 side, and one end of each is a mother electrode. M pieces of, for example, quadrangular transparent electrodes Xt and Yt connected to predetermined positions (described later) of Xbi and Ybi (if necessary, a subscript i such as "transparent electrodes Xti and Yti" are added. , Clarify the attribution relationship with the mother electrodes Xbi and Ybi). At this time, the n mother electrodes Xb1 to Xbn and Yb1 to Ybn are arranged in parallel with each other and alternately at equal pitches in the first direction D1. It is desirable that the mother electrodes Xbi and Ybi have lower impedances than the transparent electrodes Xt and Yt. In FIGS. 4 and 5, the transparent electrodes Xt and Yt are arranged on the surface of the front glass substrate 102 on the discharge space side, and the mother electrodes Xbi and Ybi cover the ends of the transparent electrodes Xti and Yti. Although the structure arranged on the surface is shown, the stacking order of both electrodes may be reversed.

One end of each of the transparent electrodes Xti is connected to the mother electrode Xbi and projects into one of the two unit regions AR adjacent to the first direction D1 with the mother electrode Xbi in between. Moreover, each of the m transparent electrodes Xt is formed so as to project in alternating directions with respect to the first direction D1. That is, the adjacent transparent electrodes Xt are formed so as not to project to the same side. Similarly, each of the m transparent electrodes Yt forming the transparent electrode Yti is connected to the mother electrode Ybi at one end thereof, and in the unit region AR so that its overhanging directions are staggered with respect to the first direction D1. It has an overhanging shape. In particular, as shown in FIG. 5, the edges of the transparent electrode Xt and the transparent electrode Yt on the overhanging side are connected to each other via a predetermined gap (corresponding to a discharge gap as described later) DG in the same unit region AR. We are facing each other. Incidentally, opposed to the transparent electrode Xt, the spacing between Yt (or distance) is referred to as "(gap DG) spacing (or distance) dgl", the transparent electrodes Xt, the length of the opposed portions of each edge of Yt It will be referred to as "width (or length) dgw of the gap DG". On the other hand, the gap between the opposite edges of the two adjacent mother electrodes (corresponding to the non-discharge gap as described later) is called "gap NG", and the distance (or distance) between the two edges is called "gap NG". ) Will be referred to as "interval (or distance) ngl (of gap NG)".

By connecting each of the column electrodes WW1 to WWm / 2 to a predetermined output terminal of the drive IC 182, the AC-PDP 72 can be driven by the same drive method as the AC-PDP 71. At this time, even if the column electrodes WW1 to WWm / 2 are arranged across the two adjacent discharge spaces 111 with the partition wall 10 in between, the AC-PDP 72 is provided along the first and second directions D1 and D2. Since the discharge cells C and the non-discharge cells NC are arranged alternately, the AC-PDP 72 can be driven without causing an erroneous discharge.

< Other variants >
Each of the driving methods according to the above-described first and second embodiments can be applied to the conventional AC-PDP201 (see FIGS. 11 and 12) in addition to the AC-PDPs 61, 71 and 72. That is, the AC-PDPs capable of controlling the discharge in each of the plurality of discharge cells C to which a common voltage is supplied by the voltage (potential difference) independently supplied to each discharge cell C are described above. It can be driven by a driving method.

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