JPS603835A - Gas discharge type plane display panel - Google Patents

Abstract

PURPOSE:To obtain a highly minute display panel by a method, in which a large number of positive poles are provided in parallel each other on a substrate, on which a large number of negative poles are provided in parallel each other so as to meet at right angles with the positive poles through a dielectric layer, while a large number of auxiliary positive poles are provided in parallel each other corresponding to the positive poles on a transparent face plate. CONSTITUTION:A large number of mutually parallel positive poles 70 are provided at equal intervals on a substrate 10, on which a large number of mutually parallel negative poles 40 are provided at equal intervals so as to meet the positive poles at right angles through a dielectric layer 30 for being polyphase (in this Fig. three phase) - connected inside the panel while providing further thereon each space between positive poles with a barrier rib 50 parallel to the positive poles 70. On the other hand, the back of a transparent face plate 60 is provided with a large number of auxiliary positive poles 80 mutually parallel so as to meet at least with the negative poles 40 at right angles. Then, said substrate 10 and face plate 60 are piled up so that the negative poles 40 may meet the auxiliary positive poles 80 at right angles for constituting the panel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a particularly high-definition (high-density) flat display panel that displays characters, figures, etc. using gas discharge.

[Background of the invention]

A conventional high-definition flat display panel using gas discharge is shown schematically in FIG. 1 (SID, 1982 Digest).

As shown in P160), a large number of cathodes 40 and a large number of barrier ribs 50 orthogonal to the cathodes are provided on the substrate 10 via a large number of trigger electrodes 20 and a dielectric layer 30 in the same direction as the trigger electrode 20, A large number of anodes 70 are provided on the back surface of the substrate so as to be perpendicular to the cathodes, and these substrates and a face plate are stacked one on top of the other.

Then, a Norms voltage is applied between the cathode 40 and the trigger electrode 20 to generate an auxiliary discharge, and the charged particles generated at this time are used to apply a pulse voltage between the cathode 40 and the anode 70 to generate information. A method of generating display discharge (direct current discharge form) for display is used. For this reason, as the number of display pixels (i.e., the number of cathodes) increases, (1) brightness decreases in inverse proportion to n, so higher brightness is necessary; (2) the number of terminals and drive circuits for trigger and cathode There were still problems such as the need for 21/n pieces.

[Purpose of the invention]

An object of the present invention is to provide a high-definition gas discharge type flat display panel that solves the problems of the prior art described above.

[Summary of the invention]

The panel of the present invention is constructed as shown in the schematic diagram of FIG. That is, a large number of mutually parallel anodes 70 are disposed on the substrate 10.
are provided at regular intervals, and an anode 7 is placed on top of the dielectric layer 30 via a dielectric layer 30.
A large number of mutually parallel cathodes 40 are provided at equal intervals so as to be orthogonal to
Furthermore, barrier ribs 50 parallel to the anodes 70 are provided between the anodes. On the other hand, a large number of auxiliary anodes 80 are provided on the back surface of the transparent face plate, which are parallel to each other and at least perpendicular to the cathode 70. The substrate 10 and the face plate 60 are stacked so that the cathode 70 and the auxiliary anode 80 are perpendicular to each other to form a panel. A time-series pulse voltage is applied between the cathode 40 and the auxiliary anode 80 to generate an auxiliary discharge (DC pulse discharge), and a so-called self-scanning function is provided to transfer this discharge. On the other hand, the number t of information displays (alternating current discharge form) is generated between the cathode 40 and the anode &70 by utilizing the ionization coupling effect with the auxiliary discharge, and a continuous pulsed voltage 1 of bipolar nature is applied to the anode 70. '''C
)-e+) function 60.1 [Embodiment of the invention] Hereinafter, one example of feeding of the present invention is shown in Fig. 2 (cross-sectional view) and Fig. 3.
This will be explained using a diagram (an exploded perspective view).

On a substrate 10 made of glass or the like, a large number of mutually parallel anodes 70 are provided at approximately equal intervals by printing and baking a conductive paste such as 71u, Ag, At, or the like.

Dielectric layer 3 on which glass paste or the like is printed and fired
Set 0. Next, a large number of mutually parallel cathodes 40 are formed perpendicularly to the anode using Ni, At, or the like paste using a printing technique or the like. In addition, the cathode 40 is made of multi-phase (in the case of the figure, three phases from φ1 to φ) inside the channel using multilayer technology.
3) Connect 41.

Also, the space between the cathodes should be coated with a substance 31 with a large secondary electron emission coefficient such as MgO. Next,
A large number of barrier ribs 50 parallel to the anodes 70 are provided between each of the anodes 70 by printing and firing a glass paste or the like.

On the other hand, on the back side of the transparent face plate 60 made of glass or the like,
Auxiliary anode 80 made of a transparent conductor such as indium oxide
is provided to correspond to the cathode 70. Note that, in order to increase the contrast of the display, a black film 110 formed by printing and firing a black glass paste is provided except for the display portion lOO. Further, in the case of color display, the display section 100 is provided with a phosphor (not shown). Furthermore, it is preferable that the surface of the face plate 600 be processed into a total reflection surface to prevent a decrease in visibility due to reflection of external light.

The substrate 10 and the face plate 60 on which electrodes etc. are formed in this way
are stacked so that the cathode 40 and the auxiliary anode 80 are perpendicular to each other, the surroundings are hermetically sealed to withstand high vacuum, and then heated and evacuated to high vacuum, and placed in the discharge space 90 formed by the barrier lip 50. Ne-Ar, Ne-Xe, He-Xe,
10 to 70 Q Torr with noble gas such as xe as the main component
Encapsulate.

In addition, the pitch of each electrode is optimally high definition (high density) of 1 to 8 electrodes/electrode. Also, the height of the barrier lip 50 is 0.0
Approximately 5 to 0.5 w is appropriate.

Next, a method for driving this panel will be briefly explained using FIG. 4. One end of the many arranged cathodes 40 is used as a reset electrode and connected to terminal R to generate a reset pulse PR (pulse width: 1R, amplitude: V m
*Period: T) is applied.

On the other hand, φ1. φ2 and φ3 are time-series three-phase cathode pulses PK (pulse m: tK) as shown in FIG.

Amplitude knee VK1 cycle: TK) is applied. Auxiliary anode 80
are connected to a common terminal SA via a current limiting resistor r, and a potential Vs (a pulse voltage may be superimposed) is applied thereto. In this way, when a pulse voltage or the like is applied to the reset electrode, the cathode, and the auxiliary anode, a reset discharge is first generated between the auxiliary anode 80 and the reset electrode, and then, as the pulse voltage is applied to the cathode, the reset discharge is generated at the auxiliary anode. A self-scanning function is provided in which the discharge between the cathode and the cathode is sequentially transferred within the discharge space 90 in the order of the number of cathodes. When operated in this way, the number of terminals and drive circuits is 1 for the auxiliary anode, 1 for the reset, and 1 for the cathode, regardless of the number of cathodes, that is, the number of display pixels. 3), which simplifies terminal processing, improves reliability, and furthermore reduces cost, which is a huge advantage.

On the other hand, information can be displayed by constantly applying a bipolar pulse voltage (amplitude: ±VA, pulse width: t^9 period: T^) as shown in FIG. 4 to the terminal A of the anode 70. Discharge sustaining pulse) 1 Write pulse Pw (pulse width 1 tW + amplitude: Vw) or erase pulse Pz (pulse width tE, amplitude: Vz) is applied at a timing according to the information to be displayed, as shown in Figure 4. It is maintained in a υ pulse manner by a sustaining pulse (AC type discharge form), and has a so-called memory function. At this time, the write pulse Pw is set so that the display discharge is generated only by the ionization coupling effect with the auxiliary discharge. Note that display discharge does not occur with only the sustaining pulse. Also, 1 of the cathode application pulse. and VK, and T, which determines the repetition of the auxiliary discharge, are set so that the contrast of the display does not deteriorate due to the occurrence of the auxiliary discharge.

〔Effect of the invention〕

Wow, let's go 6.4□. 24 Oh. Not only is it ideal for displaying high-definition images in a single unit, but it also (1) has a self-scanning function, which significantly reduces the number of terminals and drive circuits, reducing costs and improving reliability. that we aimed to
and (2) the provision of a memory function solves the problem of reduced brightness due to an increase in the number of display pixels.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional panel, Fig. 2 is a schematic sectional view of the panel of the present invention, Fig. 3 is an exploded perspective view of the panel of the present invention, and Fig. 4 is a diagram of the driving voltage waveform of the panel of the present invention. It is a figure showing an example. DESCRIPTION OF SYMBOLS 10... Substrate, 30... Dielectric layer, 40... Cathode, 50... Barrier rib, 60... Face plate, 70...
Anode, 80...Fig. 1, 2nd, 3rd

Claims (1)

[Scope of Claims] 1. At least a large number of anodes are provided on the substrate in parallel with each other and spaced apart from each other, and a number of cathodes are provided on the substrate, parallel to each other and spaced apart from each other at equal intervals, so as to be orthogonal to the anodes. barrier ribs parallel to the anodes are provided between the anodes, and a large number of auxiliary anodes are provided on the transparent face plate at least in correspondence with the anodes, parallel to each other and equally spaced apart, A gas discharge type flat display panel characterized in that the cathode and the auxiliary anode are stacked on top of each other so that the cathode and the auxiliary anode are orthogonal to each other, the periphery is hermetically sealed, and a gas is filled. 2. In the gas discharge type flat display panel described in item 1,
A gas discharge type flat display panel characterized in that the cathode is connected in multiple phases and is provided with a self-scanning function. 3. A gas discharge type flat display panel according to item 1 or 2, characterized in that a continuous bipolar pulse voltage is applied to the anode to provide a memory function. . 4. A gas discharge type flat display panel according to item 1, item 2, or item 3, wherein at least the face plate is coated with a phosphor.