JPH02288129A - Manufacture of display device electrode - Google Patents

Abstract

PURPOSE:To prevent adhesion of sputters at the time of laser irradiation and remove burrs at the cut part generated by laser irradiation easily by irradiating a joint with laser in the condition that an electrode is immersed in a non- combustive liquid, severing the joint, and dividing a sash bar. CONSTITUTION:A unit is formed by adhering electrodes 3, 5 having sash bars 3a in continuity with each other through a joint 3b are adhered together through a spacer 4 consisting of insulative substance. This unit is immersed in a non-inflammable liquid, and the whole unit is covered with a layer 1 of this liquid. The cut part 3b of unit covered with the layer 1 of liquid is irradiated with laser 6 and severed, and the sash bar 3a of the electrode 3 is divided. Therein the liquid 1 enclosing the surface of the electrode 3 cools sputters produced at the time of severing. This prevents attachment of sputters to the electrode 3, and burrs produced when the electrode 3 is severed and divided can be removed easily by irradiating the burrs with laser 6.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing electrodes for display devices.

BACKGROUND OF THE INVENTION As shown in FIG. 3, a thin plate electrode 9 having crosspieces 10 connected to each other via a connecting portion 11 is connected to another thin plate electrode 9 with a spacer 14 coated with an insulating material as shown in FIG. One electrode I5 is adhesively fixed, and an inorganic adhesive I3 is applied to the electrode 9.
The unit 16 is constructed by coating the surface of the unit 16. The connecting portion 11 is cut by irradiation with the laser I2 to separate the front crosspiece IO. After cleaning the unit IG with an organic solvent, the unit 16 is fired in an electric furnace or the like to completely remove the inorganic adhesive 13, and the unit IG is completed. Furthermore, as shown in FIG. 5, two units 1G, 1
G is adhesively fixed via a spacer 23 made of an insulator. As described above, the plurality of units 16 are adhesively fixed via the spacer 23, and the electrode assembly 26 is completed.

Problems to be Solved by the Invention However, in manufacturing the electrode unit 16, the laser 1
Although an inorganic adhesive 13 is applied for the purpose of preventing adhesion of spatter generated during irradiation of the inorganic adhesive 13, the scattered spatter is not sufficiently cooled. Further, the inorganic adhesive 13 is melted by the heat held by the sputter, and the inorganic adhesive 13 is attached to the electrode 9.
be fused to. Moreover, the paris 24 of the cut portion 18 generated when the electrode is cut and divided by irradiating the laser 12
The electrode 9 and the spacer 23 come into contact with the spacer 23 when adhesively fixing the plurality of units 16 to each other.
It is conductive.

Further, when the electrode units HEi and IG are bonded and fixed to each other, the pads 24 fall off, and conduction occurs between each electrode 9.15 or between each electrode 9.15 and each spacer 14.

As described above, it is extremely difficult to obtain a high-quality display device using conventional electrode manufacturing methods.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing an electrode for a display device, which can prevent spatter adhesion during laser irradiation and easily remove burrs at cut portions caused by laser irradiation.

Means for Solving the Problems The present invention prevents adhesion of spatter generated during laser irradiation by immersing the electrode to be cut and divided in a non-flammable liquid, and irradiates the laser onto the spatter generated during cutting. It is to remove.

Function: The electrode to be cut and divided is immersed in a non-flammable liquid, and the liquid covering the electrode surface can cool spatter scattered during cutting, thereby preventing spatter from adhering to the electrode.

Moreover, the pars generated when the electrode is cut and divided can be easily removed by irradiating the pars with a laser.

By manufacturing electrodes using such a method, a high-quality display device can be obtained.

EXAMPLE Hereinafter, a method for manufacturing electrodes for a display device according to an example of the present invention will be described with reference to the drawings. FIG. 1 shows laser cutting of the electrode unit in this example. An electrode 3 having a crosspiece 3a continuous to each other via a connecting portion 3b and the other electrode 5 are adhesively fixed via a spacer 4 made of an insulating material to form a unit. Immerse this unit in a non-flammable liquid, e.g.
The entire unit is coated with a layer 1 of the liquid.

Cutting section 3b of said unit covered with said layer 1 of liquid
The beams 3a of the electrodes 3 are mutually divided by irradiating them with a laser 6 and cutting them.

Next, FIG. 2 shows a state in which the crosspieces 3a are mutually cut and divided at the cutting portion 3c. The laser 7 is irradiated on the paris 8 generated during the cutting and dividing, and after the paris 8 is removed, the liquid is dried to complete the unit free of spatter.

Next, after manufacturing a plurality of units through the above steps, the plurality of units are stacked and fixed via spacers made of an insulating material, thereby completing an electrode structure (see FIG. 5).

Note that laser cutting may be performed underwater.

Effects of the Invention The present invention covers the connection part with a layer of non-flammable liquid to prevent the adhesion of spatter when cutting the connection part, and also prevents the formation of spatter when cutting the connection part by laser irradiation. By removing the electrodes, electrical contact between each electrode, electrode, and spacer can be reduced, resulting in stable image quality and a highly reliable, high-quality display device. can be manufactured.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a mouth and an electrode unit showing a state in which crosspieces are cut and separated from each other at a connecting portion in a method for manufacturing electrodes for a display device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a cutting portion of a crosspiece in the same method. a perspective view of an electrode showing a state in which paris is removed;
FIG. 3 is a plan view of an electrode pattern, FIG. 4 is a sectional view of an electrode unit of a conventional display device electrode manufacturing method, and FIG. 5 is a sectional view of an electrode structure unit constructed using the same electrode. . 111. liquid, 3. ,,electrode, 3a,,,crosspiece, 3
b, , Connection part, 3 c, , Cutting part, 4.1. Spacer, 519. Electrode, 6.7. ,, Laser 860.
Name of agent: Patent attorney Shigetaka Kurino Number 1 Figure #Sakaibe b Figure LL Figure 3

Claims (2)

[Claims] (1) A display device having an electrode structure in which a plurality of electrodes each having a continuous crosspiece are provided between a cathode and a phosphor via a connecting portion, and these electrodes are bonded and fixed via a spacer made of an insulating material. 2. A method for manufacturing an electrode for a display device, comprising: irradiating the connection portion with a laser to cut the connection portion while the electrode is immersed in a nonflammable liquid, and dividing the crosspieces from each other. Method. (2) The method for manufacturing an electrode for a display device according to claim 1, wherein the cut portion of the crosspiece is irradiated with a laser.