JPS60218750A - Plate-type display device - Google Patents

Abstract

PURPOSE:To prevent any warping of electrodes and improve their positional accuracy by fixing the electrodes while maintaining their insulation from each other by means of sleeves, spacer sleeves and pins. CONSTITUTION:Each pin 23 is inserted into the holes of a spacer sleeve 25, a sleeve 21, a spacer sleeve 22, a sleeve 20 and a spacer sleeve 24. The head 26 of the pin 23 and its end 27 are clamped to fix electrodes 16 and 17. The distance between the electrodes 16 and 17 can be secured by the thickness of the spacer sleeve 22. The electrode 16 is insulated from the electrode 17 by means of the sleeves 20 and 21 and spacer sleeves 22, 24 and 15. As no sintering is performed, no residual stress is produced between the electrodes. Accordingly it is possible to increase the positional accuracy between the electrodes 16 and 17 thereby preventing any warping of the electrode block.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flat display device for video equipment.

Structure of the conventional example and its problems In the conventional electrode manufacturing method, as shown in Figure 1A, Ni is first manufactured.
- Pbo -8 on both the front and back sides of the thin plate 1 of the Cr-Fe alloy
102. Paste glass consisting of glass fine powder mainly composed of Coo and an organic binder is applied by screen printing method or the like, and the glass fine powder is crystallized by firing at a temperature of 550''C to 600'C. As shown in Figure 1, a spacer is manufactured by forming an insulating glass layer 2 on the surface of the Ni-Cr-Fe alloy thin plate 1.Next, as shown in Figure 2, a spacer is manufactured using a Ni-Cr-Fe based alloy. - PbO, Z
A low melting point glass bonding material made of a low melting point glass fine powder containing nO, B2O3 as main components and an organic binder is applied by screen printing or the like and then dried to form the bonding layer 4.

When bonding the electrodes, a spacer 7 with the bonding layer 4 formed thereon is inserted between the electrodes 6 as shown in FIG.
Align the positions of the electrode 5, electrode 6, and spacer 7 in the direction of arrow X and the direction of arrow Y through the positioning pin hole 8, and align the stamper plane (not shown) from the electrode 6 side to the electrode 6 side. ), the bonding layer 9 formed on the surface of the spacer 7 is heated to a temperature at which it melts and recrystallizes while applying pressure from the electrode 6 side to the electrode 6 side with a flat surface of a firing jig (not shown), and then cooled. Do a reversal. In this way, the electrodes 6 can be joined to each other with a predetermined distance maintained through the spacer 7. However, when bonding using this method, since an insulating glass layer is formed on the surface of the spacer 7, the coefficient of thermal expansion is smaller than that of the electrodes 6, 6, and 6.
When the spacer 7 is heated for bonding, the bond is completed and the electrode 61 is cooled, the spacer 7 and the electrode 61. Residual stress was generated between the electrodes 6, causing warpage and mutual positional deviation between the electrodes 5 and 6. In flat display devices using such electrodes, the accuracy of the position of the electron beam reaching the phosphor type was poor, resulting in a significant drop in image quality.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned conventional drawbacks, eliminates warping of electrodes, and improves electrode position accuracy.

Constituent structure of the invention A flat display device in which a plurality of electrodes, a sleeve made of an insulating material, a spacer sleeve made of an insulating material, and an electrode block formed of a pin are arranged between a cathode and a phosphor,
A spacer sleeve is placed between each electrode and on one or both sides of the outside of the electrode, the sleeve is placed in a hole provided in the electrode, the pin is inserted into the hole in the spacer sleeve and the hole in the sleeve, and the pin is inserted into the hole provided in the electrode. By fixing each electrode at a predetermined interval while maintaining insulation, it is possible to improve the positional accuracy of the electrodes and eliminate warping of the electrode block. This will be explained based on FIGS. FIG. 4 shows an electrode block according to an embodiment of the present invention, in which reference numerals 10 and 11 are electrodes, and each crosspiece 1
A hole is provided in 2.13, and the electrodes 10 and 11 are fixed with a pin 15 while maintaining a predetermined distance with a sleeve 14. In order to explain the details of the electrode manufacturing constant force method, FIG. 5 shows an enlarged view of the section AA' in FIG. 4. 16.17 in Figure 6
is an electrode provided with holes 18 and 19 for fixing to the crosspiece.

20.21 is made of an insulating material, has an outer diameter smaller than the hole 18.19 provided in the electrode, has a thickness thinner than the electrode 18.19, and has a hole in the center of the sleeve; the hole 18 provided in the electrode.
．． It is inserted in 19. 22 is made of an insulating material, has an outer diameter larger than the hole 18°19 provided in the electrode, has a hole diameter in the center larger than the diameter of the pin 23, and has a sleeve 20.2.
It is a spacer sleeve provided with a hole smaller in outer diameter than the electrode 16 and the electrode 170. 24.25
is a spacer sleeve made of the same material and shape as 22, and is arranged outside the electrodes 16 and 17. The pin 23 is connected to the spacer sleeve 26, sleeve 21, and spacer sleeve 22.
, the sleeve 20 is inserted into the hole of the spacer sleeve 24, and the electrode 16 and the electrode 17 are caulked at the end 27 opposite to the pin head 26, which has a larger hole diameter in the spacer sleeve.
to be fixed. The distance between the electrodes 16 and 17 can be ensured by the thickness of the spacer sleeve 22,
The insulation between the electrodes 16 and 17 is maintained by the spacer sleeves 22, 24, and 25.

In addition, although the above example shows a method for fixing two layers of electrodes, when fixing multiple electrodes, a sleeve is similarly inserted into the hole provided in the electrode, and a spacer sleeve is inserted between each electrode. A multilayer electrode block can be accurately fixed by inserting a pin into the hole provided in the sleeve or spacer sleeve and caulking the end opposite to the head of the pin to maintain a predetermined electrode spacing. is also possible.

Effects of the Invention In this invention, each electrode can be assembled and fixed with high accuracy while maintaining insulation using sleeves, spacer sleeves, and pins, and since there is no firing process, residual stress generated between each electrode can be reduced. The positional deviation between the electrodes can be reduced by a length of 200 mm.
It was possible to reduce the thickness to 20 μm or less. The warpage of the electrode block after assembly and fixation was also reduced to 30 μm or less.

Through the above-mentioned methods, the accuracy of the doubling of the shimiko beam onto the phosphor has been improved, and it has become possible to make a significant contribution to improving the image quality of flat panel display devices.

[Brief explanation of drawings]

Figure 1 A9 is a sectional view showing the spacer manufacturing method;
The figure is a cross-sectional view showing the bonding layer forming method, FIG. 3 is a plan view showing the electrode firing state, FIG. 4 is a plan view showing the fixing method using a pin in one embodiment of the present invention, and FIG. FIG. 3 is a cross-sectional view showing details of a fixing state using a pin in one embodiment. 6.6... Electrode, 7... Spacer, 1
6.17... Electrode, 18.19... Hole provided in the electrode, 20.21... Sleeve,
22, 24.25...Suhesas! J-bu, 2
3...Pin, 26...Pin head, 27
・・・・・・The end opposite to the head of the pin. Name of agent: Patent attorney Toshio Nakao and 1 other person
1v! J diagram

Claims (2)

[Claims] (1) A plurality of electrodes between the cathode and the phosphor, a sleeve made of insulating material, and a spacer 7leap made of insulating material,
A flat display device with electrode blocks made of pins. (2) the thickness of the sleeve is the same as or thinner than the thickness of the electrode;
An outer diameter is provided in the electrode, and the cutout hole is smaller, an inner diameter is larger than the outer diameter of the pin, the thickness of the spacer sleeve is the same as the spacing between each electrode, and the outer diameter is provided in the front C' electrode. Claim 1: The hole is larger, the inner diameter is smaller than the outer diameter of the sleeve and larger than the outer diameter of the pin, and the diameter of the pin head is larger than the inner diameter of the sleeve and the spacer sleeve. The flat display device described above. G3) Place a spacer 7 leap between each electrode and on one or both sides of the outside of the electrode, place a sleeve in the hole provided in the electrode, and insert the pin into the hole in the spacer sleeve and the hole in the sleeve. 2. A flat panel display device according to claim 1, wherein the ends of the pins opposite to the heads are caulked or the like to prevent the pins from coming off and fix each electrode.