JPS59209246A - Gas discharge type flat display device - Google Patents

Abstract

PURPOSE:To obtain highly minute color display by a method in which s spacer having numbers of main discharge spaces arranged in the shape of a matrix between a substrate and a face plate is provided while applying phosphors for color display to the side walls of the main discharge spaces. CONSTITUTION:Numbers of the mutually parallel first electrodes 20 are provided on a substrate 10 made of glass or the like by print-firing Ni-paste or the like while polyphase connecting in four phases. A spacer 80 made of glass or the like and having numbers of main discharge spaces 90 arranged in the matrix shape is set up. Phosphors 100 for color display are applied to the side walls of the main discharge spaces 90. Numbers of the mutually parallel second electrodes 70, in which Ni-and-Au paste is print-fired, are set up on the back of a face plate 60 made of glass or the like while setting up a black film 140, on which black glass paste is print-fired excepting the display part 130 for heightening display contrast. After piling the substrate 10 and the face plate 60 through the spacer 80 and sealing the surroundings airtightly, a rare gas such as He+Xe or the like is enclosed while heating and exhausting up to a high vacuum.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a flat display device using gas discharge, particularly a flat display device that uses a gas discharge.
The present invention relates to a high-definition color one-plane display device suitable for displaying figures and the like.

[Background of the invention]

An example of a high-definition flat display device using gas discharge is S ID
, 1982. Digest, P160.

A partial sectional view of this flat display device is shown in FIG. In this flat display device, a large number of third electrodes (trigger electrodes) 30 are provided on a substrate lo, and a large number of first electrodes (cathode) 20 and barrier ribs 40 are further provided via a dielectric layer 11. A large number of second electrodes (anodes) 70 are provided on the back surface so as to be orthogonal to the cathode 20, and these substrates and a face plate are superimposed. For this reason, (1) color display is not possible; (2) the trigger electrode 3o must be divided into multiple pieces as shown in FIG. ), and by periodically connecting the cathodes (Kφ to φ4), if the number of cathodes is n, the number of drive circuits on the cathode side, including the trigger circuit, can be reduced to 2v'T. If there is an additional need for further reduction, for example, if n=400, 40 drive circuits on the cathode side will still be required.

[Purpose of the invention]

An object of the present invention is to provide a flat display device capable of high-definition color display that solves the problems of the prior art described above.

[Summary of the invention]

As shown in the schematic diagram of FIG. 2, the present invention provides a multi-phase connection by providing a large number of first electrodes 20 parallel to each other on a substrate 1°, for example, a four-phase connection Eφ凰 to Eφ4), and connects the substrate 10 and the face plate 60. A spacer 80 having a main discharge space 90 arranged in a rack-like arrangement is provided between the spacers 80 and a phosphor 100 for color display is coated on the side wall of the main discharge space 90. It is characterized by solving technical problems.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be explained in Fig. 2 (cross-sectional view) and Fig. 3.
This will be explained using a figure (an exploded perspective view). A large number of mutually parallel first electrodes 20 are provided on a substrate lo made of an insulating material such as glass by printing and baking N1-paste or the like.

Connect 21. Next, barrier ribs 4o that are parallel to each other and perpendicular to the first electrode 2o are provided by printing and firing a glass paste or the like. Note that the barrier ribs 40 may be formed using glass fiber. The line width of the first electrode 20 is 0.0
3-0.1 ran, electrode pitch 0.1-0.5
Approximately tm is appropriate. Also, the width of the barrier rib is 0.0
Approximately 5 to 0.1 wn and height of 0.05 to 0.5 wa are suitable. Next, the main discharge spaces 90 (0, IXo, 1om~0.5 x
0.5no++) spacer 8 made of glass or the like
0 (thickness 0.1 to 1 cm). On the side wall of the main discharge space 90 is a phosphor 1o for color display.

Apply.

On the other hand, on the back side of the transparent face plate 60 made of an insulating material such as glass, a large number of mutually parallel second electrodes 70 (perpendicular to the first electrodes 20) printed and fired with Ni or Au paste are shown, for example, in FIG. Furthermore, black glass paste is printed on the entire area except for the display part 130 to increase the contrast of the display! A black film 140 is provided.

Note that the phosphor 100 may also be applied to the display section 130. Further, it is preferable to process the surface of the face plate 60 into a total reflection surface to prevent a decrease in visibility due to reflection of external light.

The substrate 10 and the face plate 6o formed in this way are connected by a spacer 8.
After stacking them with each other through 0 and sealing the surroundings airtight to withstand high vacuum, heat and evacuate to high vacuum at 400 r for 2 hours or more to 1 O-7 Torr), He+Xe.

10-5o with rare gases such as Ne+Xe and Xe as the main components.

Enclose TOrr.

Note that, between the spacer 80 and the barrier rib 4o, there are a large number of ionization channels 120 (0.03 to 0.1 φ) arranged in a matrix corresponding to the main discharge space 90.
A thin sheet 110 (thickness: 0.02 to 0.1 wm) made of e-Ni alloy or the like is provided, and a phosphor 100 is applied to the area facing the discharge space 90 to improve brightness characteristics and contrast. be able to.

Next, a method for driving this panel will be briefly explained using FIG. 4. FIG. 4(a) is a schematic diagram showing the electrode arrangement and wiring of the panel, and FIG. 4(b) is a waveform diagram showing an example of the driving voltage. One end of the large number of first electrodes 20 is used as a reset electrode R and is connected to a terminal BE. The remaining first electrodes E1 to El are periodically connected to four groups (four-phase connection) and connected to terminals Eφ1 to Eφ4, respectively. Each terminal E
G6+ to Eφ4 are time-series four-phase bipolar pulse voltages (amplitudes: Vm, -Vg,
Period: T1 pulse width t5=1 to 500 μs) is applied. Further, a pulse voltage (amplitude: Vi) with a period T1 and a pulse width of 1° (10 to 500 μs) is applied to the soset terminal E. Apply such pulse voltage to each terminal (几E.

When applying voltage to Eφ heavy to Eφ4), first, electrode RE is applied.

A reset discharge occurs in the auxiliary discharge space 50 between E
+ Bs, Ex Ex, Ell E4
, . . . The auxiliary discharge space 50 is transferred as a discharge between En and En, and a self-scanning function is provided.

Note that in order to facilitate the generation of reset discharge, it is preferable to provide a pair of keep-alive electrodes (not shown) near the reset electrode to generate DC discharge.

On the other hand, information is displayed by applying a pulse voltage (pulse width: to
(tacts) amplitude: Vo) to each terminal (A+=Ar
n). Note that the pulse may be modulated with a high frequency (pulse width tp (0 (tp < 3 μs), period Tp (0 (Tp (t o ), amplitude vo) as shown in Am. The sheet 110 may be floating or Apply an appropriate bias potential.

With this configuration, (1) color display is possible; (2) the number of drive circuits and the number of electrode terminals are the same as the number of first electrodes (
In other words, regardless of the number of display pixels (proportional to the number of display pixels), it can be significantly reduced to a total of 5 for reset and 4-phase first electrodes, and reliability can also be improved. Due to the charged particles of
There are great advantages such as the main discharge of the display between the electrode and the second electrode occurring at high speed and at low voltage.

〔Effect of the invention〕

As described above, the flat display device of the present invention (1) replaces the main discharge between the first electrode and the second electrode of the display device with the surface discharge (auxiliary discharge) between the first electrodes provided on the same plane on the substrate. (discharge) to achieve high-speed, low-voltage operation (
2) The first electrode is multiphase connected and equipped with a self-scanning function that transfers surface discharge by applying a bipolar pulse voltage, which significantly reduces the number of drive circuits and terminals, and improves reliability. (3) An independent discharge space is provided for each display picture element (main discharge), and a color display is achieved by coating the side walls of the discharge space with a phosphor.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view showing a conventional flat display device, Fig. 2 is a partial sectional view showing an embodiment of the present invention, Fig. 3 is an exploded perspective view thereof, and Fig. 4(a) is its electrode connection. FIG. 4(b) is a diagram schematically showing the driving voltage waveform. DESCRIPTION OF SYMBOLS 10... Substrate, 20... First electrode, 21... First
Electrode multiphase connection, 4o... Barrier lip, 5o... Auxiliary discharge space, 60... Face plate, 70... Second electrode, 8o
... Spacer, 90... Main discharge space, 1oo...
Fluorescent material, 11o...C), 120...Ionization coupling path, 13o...Display part,

Claims (1)

[Claims] 1. A large number of first electrodes are provided on the substrate at regular intervals in parallel with each other, and on the substrate, a large number of barrier ribs are provided at regular intervals in parallel to each other and are perpendicular to the first electrodes, and barrier ribs are provided between the barrier ribs on the face plate. A large number of second electrodes are provided in parallel, and the substrate and the face plate are overlapped via a spacer having a discharge space arranged in an IJ rack shape, and the periphery is hermetically sealed and gas is filled. 2. The gas discharge type flat display device according to claim 1, wherein the gas discharge type flat display device is provided with a self-scanning function by applying a bipolar pulse voltage.