JPS61206134A - Planar discharge display element - Google Patents

Abstract

PURPOSE:To realize high brightness and high light emission efficiency while to make fine the cell by forming the discharge display space thick in normal direction against the light transmission face plate then making one end thin and folding to be coupled to the auxiliary discharge space. CONSTITUTION:A cathode 5, a resistor 7 for memory and a lead wire 8 are provided on an insulated substrate 2 then an insulation layer 9 is formed entirely except the cathode 5 and an auxiliary anode 6 is provided. The discharge cell is composed of a discharge display space 10, an auxiliary discharge space 11 and a cathode space 12 common to both discharges where the discharge display space 10 is formed in normal direction against the face plate 1 with such size as approximately same with the cell pitch then one end is made thin and folded to be coupled with the auxiliary discharge space. A display anode 4 is provided on the other end of the discharge display space 10 or the face plate side while the auxiliary discharge space 11 is extending over the substrate and including an auxiliary anode 6. Fluorescent material 13 is applied onto the wall face of said space 10 and excited by ultraviolet ray produced through display dis charge to provide a light emission display.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to the structure of a flat discharge display element that displays one character, nine images, etc. by exciting a phosphor to emit light using ultraviolet rays generated by a gas discharge.

[Background of the invention]

The structure of the conventional flat discharge display element with memory resistance is the first patented structure.
As described in No. 074223, a long and narrow discharge space is provided parallel to the face plate, and a positive column of glow discharge is generated in this space to excite the phosphor to emit light, thereby achieving high brightness and high luminous efficiency. However, when displaying, for example, a television image using this flat discharge display element.

The problem was that the luminous efficiency was still insufficient, the amount of heat generated was large, and it was not possible to display bright images. In addition, the auxiliary anode was printed on a spacer and taken out through a through hole, or a metal wire was used. However, this method has drawbacks such as an enormous amount of work time required to take out the terminals of the auxiliary anode when increasing the size of the device, and poor reliability.

[Purpose of the invention]

The purpose of the present invention is to improve these drawbacks and provide high brightness.

An object of the present invention is to provide a flat discharge display element that is highly efficient, easy to manufacture, and highly reliable.

[Summary of the invention]

In order to achieve the above object, the present invention focuses on the fact that the cross-sectional area of the discharge space that generates the positive column and the efficiency are almost proportional, and the discharge space of the display discharge, which accounts for most of the power consumption, is made as wide as possible. Basically, the auxiliary discharge space should be formed small. In the cell structure, a display discharge space is provided wide in a direction perpendicular to the face plate, one end of which is bent to make it narrower and continuous with an auxiliary discharge space, and a cathode is provided through a space common to both of the display spaces.

Further, the auxiliary anode is formed on the insulating substrate at the same time as the terminal using, for example, a thick film printing method.

As a result, a flat discharge display element with high luminous efficiency and high reliability even when increased in size can be obtained.

This structure is particularly advantageous when used as a flat discharge display element using Townsend discharge, which has extremely high ultraviolet light emission efficiency.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing the basic cell structure of a flat discharge display element according to the present invention.

The light-transmitting insulating face plate 1, the insulating substrate 2, and the space provided in the spacer 3 form a discharge cell.

A cathode 5, a memory resistor 7 (connected in series to each cathode), and a lead wire 8 are provided on the insulating substrate 2, an insulating layer 9 is formed on the entire surface except for the cathode 5, and an auxiliary anode 6 is further provided. .

An insulating layer is also applied to the entire surface except for the II3 electrode 5 and the auxiliary anode 6.

The discharge cell includes a display discharge space 10, an auxiliary discharge space 11, and a cathode space 12 common to both discharges.
As shown in the figure, 0 is formed with a size close to the cell pitch in the direction perpendicular to the face plate 1, one end of which is made thin and bent, and the other end of the 0 display discharge space 10 connected to the auxiliary discharge space is placed on the side of the face plate. is provided with a display anode 4 and an auxiliary discharge space 11
extends onto the substrate and includes an auxiliary anode 6.

A phosphor 13 is coated on the wall surface of the display discharge space 10, and is excited by ultraviolet rays generated in one display discharge to perform a light-emitting display.

A cathode space 12 is provided at a location away from directly below the display discharge space 10, and a cathode 5 common to both the display and auxiliary discharges is located.

The display anode 4 and the cathode lead wire 8 are arranged in parallel, and the auxiliary anode 6 is arranged so as to intersect with the former two, forming a matrix element.

FIG. 2 is a partially sectional exploded perspective view showing the structure of a flat discharge display device according to the present invention.

Here, 1 is a translucent insulating face plate made of soda glass or the like,
A display anode 4 is formed on the face plate 1 by a thick film printing method or the like, and a black insulating layer 16 is further provided except for the display portion.

2 is an insulating substrate made of soda glass, ceramic, etc., on which a Ni electrode 14 and a memory resistor 7. A lead wire 8 is formed by a thick film printing method or the like, and an insulating layer 9 is formed on the entire surface except for the electrode 14.
is applied. An auxiliary anode 6 made of Ni is placed on the insulating layer 9.
is formed by a thick film printing method, etc., and furthermore, the entire surface except for the electrode 14 and the part that acts as an anode of the auxiliary anode 6 is absolutely JIJI! Covered by t9'. The terminal of the auxiliary anode is also formed on the substrate by a printing method and connected to the auxiliary anode.

A barium cathode 15 is provided on the Ni electrode 14 to reduce operating voltage and improve luminous efficiency.

The barium cathode is 1, for example barium azide (B a (N
3) Formed by thermally decomposing 2) in vacuum.

3 is a spacer for forming a discharge space, and is used by etching thin glass (about 0.2 am) as an M layer, or by etching photosensitive glass such as photoceram.

For example, when the cell pitch is 1 mm, the display discharge space 10 has a cross section of 0.8 m and a width of 0.5 to 3 m in the vertical direction to the one-sided plate 1.
The length is 0.3m, and one end (opposite side of the face plate) is 0.3m long.
It is made thinner, bent, and connected to the auxiliary discharge space 11.

A phosphor 13 is coated on the peripheral wall and bottom of the display discharge space at the 0.8 wm port, and the fluorescent substance 13 is applied to emit light using ultraviolet rays generated by the display discharge.For example, each cell is painted in one color, red, green, or blue. If separated, it is possible to display color television images, etc.

The cross section of the auxiliary discharge space 11 is 0.3 m wide and 0.2 m high.
m, a cathode space 12 is provided at the connection part between the 1-display discharge space and the auxiliary discharge space, which is bent into an L shape and extends over the substrate, and the auxiliary anode 6 made of Ni is exposed. A cathode 15 is located there.

The display anode 4 and the cathode lead wire 8 are arranged in parallel and the auxiliary anode 6 is arranged so as to intersect, forming a three-electrode matrix panel.

The flat discharge display element manufactured with the above configuration further has Xe, A
One or a mixture of rare gases such as r, He, Ne, and Kr are sealed and completed.

When a barium cathode is not used, enclosing Hg is effective in preventing spatter.

〔Effect of the invention〕

As described in detail above, in the flat discharge display element having the structure of the present invention, the discharge space for the display discharge, which accounts for most of the power consumption, is formed thickly in the direction perpendicular to the translucent face plate, and one end thereof is made thin and bent. By connecting it with the auxiliary discharge space, high brightness and high luminous efficiency are achieved, and in total, it is possible to improve the definition of the cell. In addition, by bending the display space and connecting it to the cathode space, the negative glow of the cathode cannot be seen directly, and the sputtered material from the cathode does not adhere to the display discharge space, resulting in less brightness deterioration and good mantrast. Also have.

Further, by providing the auxiliary anode on the substrate, the problem of terminal processing can be solved, and the flat discharge display element can be replaced with ease of farming and high reliability.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the basic cell structure of a flat discharge display element, and FIG. 2 is a partially sectional exploded perspective view showing the structure of the flat discharge display element.

Claims (1)

[Claims] 1. Comprising a translucent insulating face plate, an insulating substrate, and a spacer forming a discharge space placed between the two insulating plates,
In a matrix-type flat discharge display element consisting of three electrodes: a cathode connected to a resistor for memory operation, a display anode, and an auxiliary anode, the resistor, cathode, and auxiliary anode are provided on an insulating substrate to perform display discharge. A display discharge space is formed in a direction perpendicular to the translucent face plate, one end of which is bent horizontally to be combined with an auxiliary discharge space, and a cathode is arranged through a space common to both discharges. A flat discharge display element.