JPS6129055A - Fluorescent display panel - Google Patents

Abstract

PURPOSE:To improve operation efficiency and to facilitate in-lined and automated operation by forming on the insulation substrate, a thin film conductor layer of thin mesh type etc. placed on the upper face of the insulator layer and on the front face of the fluorescent body layer, so as to form a conductor layer control grid. CONSTITUTION:Stripe-shaped film conductor layers 10, 10'... crossing the stripe- shaped base electrodes 2 at a right angle and wiring layers 11, 11'... extending from one end of the conductor layers 10, 10'... are formed, by etching the thin film conductor layer 10 and end portions of the wiring layer 11, 11'... are connected to conductor supporting units 11, 11'... thus the stripe-shaped thin film conductor layers 10, 10'... are electrically connected to outer terminals 4, 4'.... Then, an electronic control grid is easily formed and connected to the outer connecting terminal. Therefore, operation efficiency can be improved and inlined and automated operation can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Description of the field to which the invention applies
This invention relates to a vacuum fluorescent display device using a low-speed electronic enemy that operates as follows.

(2) Explanation of the prior art Recently, fine-pitch dot display patterns have been put into practical use in vacuum fluorescent display devices as well, but in low-speed and sub-line vacuum fluorescent display devices, electronic In order to control the display pattern, it is necessary to install a control grid between the electron source and the display pattern, facing the display pattern, so for the fine-pitch dot display pattern mentioned above, a metal grid with a thickness of approximately 005 mm is used. The plate is etched into a line or a suitable grid shape, and an appropriate tension is applied to an insulating root of an appropriate height placed outside the display pattern, and the plate is fixed with a fritted horn or the like. Methods are being taken to do so. Furthermore, these control grids can be connected to an external power source by providing external connection pads on the substrate of the vacuum fluorescent display device and connecting them to external connection terminals by wire bonding, or by connecting the control grids to external connection terminals by connecting them to external connection terminals, or Connections with the outside are made by extending the vacuum fluorescent display device outside the container, taking it out, and directly soldering it to a printed circuit board that also serves as a means for fixing the vacuum fluorescent display device.

However, in the conventional control grid formation method and external connection method described above, the work is quite special as it involves handling a large number of thin wires, and a large number of man-hours are required as the number of digits for pattern subdivision increases. are doing.

(3) Purpose of the Invention The purpose of the present invention is to eliminate the operational problems associated with the formation and connection of control grids as described above, and to solve the problem of thick film and thin film, which is generally the main process in manufacturing vacuum fluorescent display devices. The present invention aims to provide a vacuum fluorescent display device that greatly improves workability by forming a control grid using the technology described above, and which can be easily integrated in-line and automated during mass production.

(4) Development of the invention and explanation of its operation The present invention will be described in detail below using the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of a vacuum fluorescent display device according to the present invention. FIG. 2 is a schematic cross-sectional view of the assembly and seal of FIG. 1.

■ is an insulating substrate such as a glass plate, on which Al is applied by vacuum evaporation method! After forming the thin film ~, etching is performed using a photoresist method to form a striped base electrode 2.
2'... is formed.

Furthermore, Ag paste or the like is printed on the insulating substrate 1 to form external connection terminals 3.3'..., 4.4'... and wiring 5.5'... , 6, 6'...
・At this time, the base electrode 2゜2'...
and external connection terminal 3.3', etc. are connected by wiring 5゜5'
This is done by...etc. Also, the wiring 6 connected to the external terminal 4,4'...marked for control grid connection.
Copper paste is printed on the ends of ゜6', . . . to form conductor supports 7, 7', . Next, a phosphor layer 8.8'-... is formed on the display area of the base electrode 2.2'... by electrodeposition, and then the external connection terminals 3, 3 ', 4, 4゜4'..., the outer peripheral portion of the insulating substrate 1, the conductor support portion 7.7
'...Furthermore, the phosphor layers 8, 8'...
By printing the entire insulating layer 9 on the insulating substrate 1, except for
The phosphors 8, 8' are formed thicker. Next, an organic resin layer is applied to the same height as the insulating layer 9 to fill the concave portions of the phosphors m 8 , 8' . . . , and then the insulating layer surface and the organic resin layer surface A thin film conductor layer such as A is formed on the entire surface by vacuum evaporation. Next, the thin film conductor layer is etched and stretched by the 7-photoresist method to form striped thin film conductor layers 10.10', which are perpendicular to the direction of the striped base electrode, and striped electrodes 10.10'. . . . A wiring layer 11, 11' . . . extending from one end is formed, and the wiring layer 11
．． The ends of 11'... are conductor support parts 11.11'
By connecting to..., the striped thin film conductor layer 10.10'.old... becomes the external connection terminal 4.4'.
It is electrically connected to...etc. Thereafter, the organic resin layer is dissolved and removed using a solvent.

Next, an external lead frame 12 for power supply of the thermionic source is integrated between a transparent insulating substrate 18 made of a glass plate with a transparent conductive film such as Nesa film formed on the inner surface, and a side plate 16 which has been prepared and carved with glass. Sandwich the metal support plate of the Fe-Ni-Cr thread, fix it airtight with frit glass 17, etc., and attach the exhaust pipe 19).Fri-to-glass is applied to the bottom of the side plate 16, and a cover glass is attached. Form. Incidentally, the spring-like support 13 is entirely installed on the metal support plate, and a thin wire thermionic source 14, which is a tungsten wire coated with a thermionic emitting material, is installed in a stretched manner between it and the opposing fixed support part 13'. At the same time, a ring-shaped getter 15 is installed.

The insulating substrate 1 and the cover glass which have undergone the above-described steps are used as the external connection terminals 3, 3', 4.4'.
. . . is located outside the container, and the phosphor Ji&10.10' . It is sealed with 7-lit glass coated on the glass to create an airtight seal. After this, it is attached to an exhaust stand, the inside is evacuated to a high vacuum, and then sealed. Next, a part of the ring getter is heated by a frequency heating method, and a getter agent such as Ha is deposited on the inner wall near the ring getter, so that a high vacuum can be continuously maintained.

External connection terminal 3.3'...

4.4'..., the external connection terminals 3.3'... are placed on a heat-resistant organic resin film such as polyimide.
..., 4.4'... Solder the flexible frame leads with Cu thin film conductor wiring installed at the same pitch, and furthermore apply photocuring resin to the soldering part to reinforce it. Vacuum fluorescent display equipment was completed to enable external connections.

Although the present embodiment has been described with respect to a vacuum fluorescent display device with a dot display pattern, it is not possible to implement the present invention with a vacuum fluorescent display device with a so-called segment pattern used for fixed display of a single number or character.

(5) Explanation of Effects As explained above, the vacuum fluorescent display device according to the present invention uses thin film or thick film technology without going through any special processes as in the past, and can easily form electronic control grids and The control grid and external connection terminals are connected. In this way, it is easy to form a fine grid and connect externally, and it is possible to automate and save labor by in-line, and has the advantage of being able to use vacuum fluorescent display devices that are easier to work with and cheaper than conventional ones. .

[Brief explanation of the drawing]

FIG. 1 is an exploded, cut-away view showing one embodiment of a vacuum fluorescent display device according to the present invention, and FIG. 2 is a schematic fragmentary view of FIG. 1 after assembly and sealing. 1...Insulating substrate, 2...Base electrode, 3
(3'...). 4 (4'...)...External connection terminal, 5
(5'...), 6 (6'...)...
... Wiring, 7 (7'...)... Conductor support, 8 (8'...)...-'it gluing body no-no t19... ... Zetto J and J hair fin, 10 (1
0'...)... Thin film conductor layer, 11 (
11'...)...Wiring layer, 12...
...Lead frame for power supply of thermionic source, 13...
・Spring-like support body, 13'...Fixed support part, 14
... Thin wire thermionic source, 15 ... Ring-shaped getter, 16 ... Side plate, 17 ...
・Frit glass, 18...Transparent insulating substrate, 1
9...Exhaust pipe. Ditch 2 diagram

Claims (1)

[Claims] A display section including a fluorescent layer on an insulating substrate, an electron source facing the display section, and a control grid installed between the phosphor layer display section and the electron source, In a fluorescent display panel in which a body layer display section is stimulated to emit light by accelerated control of an electron beam, an insulating layer is provided on the insulating substrate, avoiding the phosphor layer display section and being thicker than the phosphor layer. formed, and the front surface of the phosphor layer display section is thin;
A fluorescent display panel characterized in that a thin film conductor layer in a mesh shape or a stripe shape is formed on the surface of the insulator layer and in front of the phosphor layer, and the thin film conductor layer is used as a control grid.