JPS603486Y2 - display device - Google Patents

Description

[Detailed description of the invention] The present invention is capable of displaying a very large panel screen, such as 1m x 2r'n or 4m x 5m, and with high brightness, and is suitable for displaying large-screen color televisions, etc. The present invention relates to a display device suitable for application to this section.

For display devices that perform flat discharge display, a highly efficient and high-luminance panel is desired.

Therefore, instead of using Ni or Fe discharge tubes, which have a working voltage of about 300 V, it was considered to use a neon lamp with a working voltage of about 100 V to lower the discharge operating voltage and increase efficiency. This is difficult to achieve.

In other words, applying this oxide electrode to a display device that displays discharge on a flat surface requires that a large number of neon pilot lamps be used, since the oxide electrode of each neon pilot lamp requires thermal decomposition treatment during the manufacturing process. Display devices arranged vertically and horizontally are extremely complicated to manufacture.

In view of this, the present invention proposes a display device in which, for example, a neon pilot lamp is manufactured at the time of manufacturing the display device, thereby eliminating the above-mentioned drawbacks.

Hereinafter, one embodiment of the display device of the present invention will be described in detail with reference to FIGS. 1 to 8.

1 is a display element, which includes a long substrate 2, a long mounting plate 3 airtightly adhered to the long substrate 2, a cathode electrode 4, and an anode electrode 5 coated thereon. More intimidating with multiple caps 6.

A groove 7 is bored in the long substrate 2 along its longitudinal direction, and a plurality of lead wire outlet ports 10 are provided between one side surface 8 of the groove 7 and one side surface 4 of the substrate 2. It will be established over the period.

Note that this groove 7 may be provided on the elongated mounting plate 3 side.

Further, an exhaust port 18 is bored in the center of the bottom of the groove 7.

Further, a long mounting plate 3 is airtightly adhered to the upper surface 11 of the substrate 2 via an adhesive glass 12.

This mounting plate 3 has a plurality of through holes 13 formed therethrough in its longitudinal direction, and silver Ag is coated on one longitudinal end of the upper surface 14 of the mounting plate 3 to form an anode electrode. A field 15 is formed.

A lens upper part 36 is formed on the upper part of each of the plurality of caps 6, and silver Ag is applied by dipping to the inner surface of the plurality of caps 6 extending up to the opening edge 17 to form the anode electrode 5. .

Further, the plurality of caps 6 are airtightly mounted on the mounting plate 3 so as to close the respective through holes 13, and the anode electrode 5 is in electrical contact with the anode electrode lead 15.

Incidentally, the vicinity of the opening edge 17 of the plurality of caps 6 is molded on the upper surface 14 of the elongated mounting plate 3 together with the anode electrode 15.

On the other hand, the cathode electrode 4 is made of rod-shaped or pipe-shaped Ni and BaAl as an oxide.

A lead wire 16 having a hook portion is attached to the end of the cathode electrode 4 by welding or caulking.

The cathode electrodes 4 are inserted into the plurality of caps 6 through the plurality of through holes 13 penetrated through the mounting plate 3, and are arranged to face the anode electrodes 5 formed on the plurality of caps 6.

Next, a method for manufacturing the display element 1 will be briefly described.

FIG. 3 shows a cathode electrode material 20 used in manufacturing the display element 1. As shown in FIG.

A plurality of lead wires 36 are attached in the longitudinal direction of the substrate 19, and a rod-shaped or pipe-shaped cathode electrode 4 is planted at the end of the lead wire 36.
After being inserted into the cap 6, the lead wire 36 is separated from the substrate 14 at its constricted end.

Further, the display element 1 is sandwiched between a pair of carbon jigs 21 and 22 as shown in FIG.
22 is sandwiched between heat-resistant clips (not shown), and then a load is applied in the direction of the arrow to seal it.

Then, m display elements 1 are arranged in parallel to form a single display device 23.

15 is an anode electrode attached to the end of the mounting plate 3;
6a to 16j are a plurality of lead wires provided alternately on both sides of the mounting plate 3 in the longitudinal direction.

Note that the plurality of lead wires 16a to 16j may be provided only on one side of the mounting plate 3.

A suitable number of these single display devices 23 are arranged in the vertical and horizontal directions and have a predetermined size, for example, 1 m x 2 rr! or 5m
The display device 24 is a numeric display panel, a character display panel, or a panel for a color television or the like.

The anode electrode lead wires 15 of the single display devices 23 arranged in the vertical direction are connected in common, and the lead wires 16a, 1 of the cathode electrodes 4 of the single display devices 23 in the horizontal direction are connected in common.
6b, 16c, . . . are display elements 1a that are commonly connected and arranged in the horizontal direction.

1b, 1c, . . . constitute each of the 525 scanning lines in television broadcasting.

Next, a driving method for displaying numbers or characters on the display device 24 will be explained with reference to FIG.

The display device 24 is composed of a display element 1 having, for example, 400 dots in the horizontal direction and 525 dots in the vertical direction.

First, as described above, the display elements 1a, lb, lc, .
c... are commonly connected, and discharge protection resistors 25a, 25b, 25c...
are connected to the output terminals of the input drive path 26 via the respective output terminals of the input drive path 26.

On the other hand, the lead wires 15 of the anode electrodes 5 of the vertically arranged single display devices 23 are connected in common as described above, and the fixed contacts 28at 28 of the changeover switch 27 are connected to each other in common.
Connected to bt 28c..., selector switch 2
The movable contact 29 of No. 7 is grounded.

Next, the operation of this drive circuit will be explained.

First, the input drive circuit 26 generates a drive signal corresponding to numbers, characters, figures, etc. to be displayed on the display device 24.

This drive signal is applied to the current limiting resistors 25a and 25.
b, 25c, . . . to each display element 1a, lb, lc, . . . of the single display device 23.

On the other hand, the changeover switch 27 selects the display elements ``law'' in the vertical column.
Fixed contacts 28a, 28b, 28c... to sequentially discharge lbv lc... by self-scanning.
· are sequentially switched to be grounded via the movable contact 29.

As a result, arbitrary numbers, characters, figures, etc. are discharged and displayed on the display device 24.

Next, another embodiment of the present invention will be described with reference to FIGS. 9 and 10, in which parts corresponding to those in FIG. 1 are given the same reference numerals.

In this example, the cathode electrode 4 is formed into a funnel shape to ensure a reliable discharge operation as a so-called hollow cathode.

A magnetic material or glass 3 as a long mounting plate is placed on a photographic plate glass 2 as a long substrate, and a sealing paste 3 is placed on it.
0 to be airtightly bonded.

A groove 7 is provided in the center of the magnetic material or glass 3 along its longitudinal direction, and the end of the funnel-shaped hollow cathode 4 is placed near the inside of the sealing paste 30.

The funnel-shaped hollow cathode 4 has a leader wire 31 in contact with it.
The lead wire 31 is arranged above the sealing paste 30 as shown in FIG. 10.

32 is a mercury getter placed in the exhaust pipe 18.

Thus, according to the display device of the present invention, the neon pilot lamp can be manufactured at the same time as the display device in a simple manufacturing process, and can be manufactured easily and fully automatically through machining.

Further, the lens processing of the plurality of caps can be easily performed mechanically, and by providing the plurality of caps with lens-like portions, the luminance can be effectively concentrated and displayed with high luminance.

Furthermore, when phosphor is applied to the inner side surfaces of a plurality of caps, the color discharge display of each color can be observed from the outside through a lens.

In addition, the oxide of the cathode electrode is Ba(AlO2)2.XH
When 2O2 is selected, the thermal decomposition treatment can be performed at a relatively low temperature, and the display device can be used with a long life even when used in a high brightness state.

Further, when the cathode electrode is a hollow cathode, the discharge operation can be performed more reliably.

In addition, since there is a gap between the long substrate and the long mounting plate, it is easy to perform exhaust and preliminary discharge, and the mercury getter can be sealed, allowing for more stable discharge compared to display devices using conventional neon lamps. It can be used for a long life.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a display element of the display device of the present invention, Fig. 2 is an exploded perspective view of the main part thereof, Fig. 3 is a perspective view of a part thereof, and Fig. 4
The figure is a cross-sectional view, FIG. 5 is a side view of a single display device, FIG. 6 is a plan view thereof, FIG. 7 is a plan view of the display device, FIG. 8 is a drive circuit diagram thereof, and FIG. 9 is a main A sectional view of another embodiment of the invention, and FIG. 10 is a plan view of the main part thereof. 2 is a long substrate, 3 is a long mounting plate, 4 is a plurality of cathode electrodes, 5 is an anode electrode, 6 is a plurality of caps, 7 is a groove, 13 is a plurality of through holes, 15 is a lead for the anode electrode ,
36 is a lens-shaped portion.

Claims (1)

[Scope of utility model registration request] It has a long substrate, a long mounting plate airtightly adhered to the substrate, a plurality of caps, and a plurality of cathode electrodes, and a lens-shaped portion is formed on the top of each of the caps. , an anode electrode extending at least to the edge of the opening is adhered to the inner surface, and a groove is formed along the longitudinal direction of one or both of the bonding surfaces of the substrate and the mounting plate, A plurality of through holes are formed through the plate, and an anode electrode lead is formed on the top surface, and the plurality of caps close the respective through holes on the mounting plate, and the anode electrode leads are formed on the top surface of the plate. The display device is airtightly attached in electrical contact with an anode electrode lead, and the cathode electrode is inserted into the cap through the through hole of the husband and faces the anode electrode.