JPH0679464B2 - Method of manufacturing flat display device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a flat-panel display device in video equipment.

2. Description of the Related Art In recent years, with the object of achieving a device capable of displaying a color television image on a flat display device using an electron beam, the screen on the screen is divided vertically into a plurality of sections. The electron beam is vertically deflected for each section to display a plurality of lines, and further divided into a plurality of sections in the horizontal direction to sequentially emit R, G, B and other fluorescent substances for each section. In some cases, a television image is displayed as a whole by controlling the irradiation amount of the electron beam to the R, G, B and other fluorescent bodies by a color video signal.

Hereinafter, an example of the above-described conventional flat-panel display device will be described with reference to the drawings.

As shown in the concrete structure of FIG. 4, the conventional flat-panel display device has a back electrode 1, a line cathode 2 as an electron beam source, vertical focusing electrodes 3a and 3b, and vertical deflection electrodes in order from the rear to the front.
4, electron beam flow control electrode 5, horizontal focusing electrode 6, horizontal deflection electrode
7. An electron beam accelerating electrode 8 and a glass container 9 are arranged and configured, and constituent parts are housed in the glass container to create a vacuum.

Each of the electron beam flow control electrodes 5 is composed of a conductor 11 having a slit 10 which is long in the vertical direction, and a plurality of the electron beam flow control electrodes 5 are arranged side by side in the horizontal direction at a predetermined interval. In this configuration example, 320 control electrode conductive plates 11a to 11n are provided (only 10 are shown in the figure). This control electrode 5 is
Each of them extracts an electron beam in the horizontal direction by dividing it into picture elements, and controls the passing amount according to a video signal for displaying each picture element.

Therefore, if 320 control electrodes 5 are provided, 320 picture elements can be displayed per horizontal line. Also, in order to display the image in color, each picture element is to be displayed in a fluorescent body of three colors of R, G, B, and each of the R, G, B image signals is sequentially displayed on each control electrode 5. Added. Further, 320 sets of video signals for one line are simultaneously applied to the 320 control electrodes 5, and the video for one line is displayed at one time.

Therefore, the control electrode conductive plates 11a to 11n need to be electrically separated from each other.

The horizontal deflection electrode 7 is a slit provided in the horizontal focusing electrode 6.
It is composed of a plurality of conductive plates 13a, 13b arranged in a vertical direction at positions on both sides of each of 12, and a voltage for horizontal deflection is applied between them to generate an electron beam for each picture element, respectively. It is deflected horizontally and R, G, B on the screen 9
The phosphors are sequentially irradiated to emit light. The deflection range is the width of one picture element for each electron beam in this embodiment.

Therefore, the conductive plates 13a and 13b need to be electrically separated.

As shown in FIG. 5, the electron beam flow control electrode and the horizontal deflection electrode have a shape in which a conductive plate 14 arranged in parallel at a constant interval is reinforced by a continuous crosspiece 15, for example, Japanese Patent Application No. 59-66927. As disclosed in the publication, at least the surface is made of an insulating material, or the surface is joined with a spacer having an insulating treatment, or after joining with another electrode through the spacer, a continuous crosspiece is cut. FIG. 6 shows an enlarged view of a main part in the case where the horizontal deflection electrode 16 and the horizontal focusing electrode 17 are joined by the joining glass frit 19 via the spacer 18 as a conventional example.

However, in the case of such a structure, when the continuous crosspiece 20 is cut as shown in FIG. 6, the influence of the deformation (shown by a chain double-dashed line) generated at the time of cutting is The orbit of the electron beam was bent at the portion that reached the beam passing portion 21 and was greatly deformed, and the landing accuracy of the electron beam on the screen was poor, causing partial color unevenness. The same thing happened in the electron beam flow control electrode.

Therefore, the present invention is intended to prevent the influence of the deformation that occurs when the continuous beam of the electron beam flow control electrode and the horizontal deflection electrode is cut off from reaching the portion through which the electron beam passes.

Means for Solving the Problems And the technical means of the present invention for solving the above problems is to support a glass frit for bonding by supporting both sides of the continuous beam of the element beam flow control electrode and the horizontal deflection electrode with spacers. Are to be joined together.

Action The action will be as follows by this technical means. That is,
The continuous beam of the electron beam flow control electrode and the horizontal deflection electrode cuts the beam after joining the left and right sides of the beam even if there is no water in parallel to the beam, so that even if deformation occurs at the cutting point, The deformation does not affect the outside of the joint. Therefore, the trajectory of the electron beam is not bent, and the landing accuracy of the electron beam on the screen is improved.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an enlarged view of an essential part in the case where a horizontal deflection electrode and a horizontal focusing electrode according to an embodiment of the present invention are joined with a glass frit for joining via a spacer at least the surface of which is made of an insulator or the surface of which is subjected to an insulation treatment. Is. In FIG. 1, 22
Reference numerals a to 22n are horizontal deflection electrodes (only four are shown in the figure), and 23 is a continuous crosspiece provided on the horizontal deflection electrode 22. The horizontal deflection electrode 22 is joined to the horizontal focusing electrode 29 by a joining glass frit 25 via spacers 24a and 24b.
The spacers 25 are provided on both sides of the crosspiece 23 in parallel with the continuous crosspiece 23, and the crosspiece YY 'supports the crosspiece 23 on both sides. Therefore, when the crosspiece 23 is cut and the horizontal deflection electrodes 22a to 22n are electrically separated from each other, the deformation generated at the cutting position is limited to only between the spacer 24a and the spacer 24b, and affects the electron beam passage portion 26. It is supposed not to.

FIG. 2 shows a method of joining the horizontal deflection electrode and the horizontal focusing electrode with a joining glass frit through a spacer in one embodiment of the present invention. Firing substrate 28 provided with pin 27 in FIG.
A horizontal focusing electrode 29, a spacer 31 coated with a glass frit 30 for bonding on the surface, and a horizontal deflection electrode 32 are installed, and a pin 27
Each of them is aligned in the XY direction with a stamper, pressure is applied from the arrow Z direction, and the glass frit for bonding is recrystallized by heating to the melting / recrystallization temperature of the glass frit for bonding 30 in an atmosphere furnace and then cooled. And complete the joining.

In the embodiment of the present invention, an example in which the horizontal deflection electrode is joined to the horizontal focusing electrode via the spacer and then the continuous bar is cut is shown, but the joining to the horizontal deflection is not limited to the horizontal focusing electrode. Any other electrode on the back electrode side or the screen side of the horizontal deflection electrode may be used, or the crosspiece provided on the horizontal deflection electrode may be cut by joining only with the spacer.

As another embodiment, also in the electron beam flow control electrode, as shown in FIG. 3, spacers 36a and 36b are provided on both sides in parallel to the continuous crosspieces 35 provided on the electron beam flow control electrodes 34a to 34n.
After being supported and bonded and fixed by, the continuous beam 35 is cut to electrically separate the electron beam flow control electrodes 34a to 34n, and the same effect as the horizontal deflection electrode can be obtained.

According to the present invention, the electron beam flow control electrode and the horizontal deflection electrode are formed in a shape having a continuous crosspiece, and are parallel to the continuous crosspiece when they are joined to a spacer or fixed to another electrode through the spacer. After joining and fixing both sides of the crosspiece with spacers, the crosspiece is cut, so the deformation that occurs at the crosscutting point does not affect the electron beam passage part, so the electron beam trajectory does not bend and the electron beam to the screen Landing accuracy can be improved and the reliability of the flat panel display device can be significantly improved.

[Brief description of drawings]

FIG. 1a is an enlarged view of a main part showing a joint portion of a horizontal deflection electrode and a horizontal focusing electrode, which is an embodiment of the present invention, and FIG.
FIG. 2 is a sectional view taken along line YY 'in FIG. A, FIG. 2 is a sectional view for explaining a method of joining the horizontal deflection electrode and the horizontal focusing electrode showing one embodiment of the present invention, and FIG. 3a is another embodiment of the present invention. FIG. 3B is a cross-sectional view taken along line YY ′ of FIG. 3A, and FIG. 4 shows a conventional flat-panel display device. FIG. 5 is a plan view showing the electron beam flow control electrode and the horizontal deflection electrode, FIG. 6a is an enlarged view of a main portion showing a joint portion between the conventional horizontal deflection electrode and the horizontal focusing electrode, and FIG. 6b. Is YY 'in Fig. 6a
It is sectional drawing of a line. 22a to 22n …… horizontal deflection electrodes, 23 …… bars, 24a, 24b …… spacers, 25 …… bonding glass frit, 26 …… electron beam passage section, 34a–34n …… electron beam flow control electrodes, 35… …
Crosspieces, 36a, 36b ... Spacers.

Claims (1)

[Claims] 1. A back electrode, a line cathode as an electron beam source,
Vertical focusing electrode, vertical deflection electrode, electron beam flow control electrode,
A horizontal focusing electrode, a horizontal deflection electrode, an electron beam accelerating electrode, and a screen plate are provided, and these are housed in the vacuum of a flat glass bulb, and the electron beam flow control electrode and the horizontal deflection electrode have a shape having continuous bars. When at least the surface is made of an insulating material, or when the surface is joined to a spacer having an insulation treatment or is joined and fixed to another electrode via the spacer, the continuous bar is parallel to the bar and at least both left and right sides of the bar are connected. After joining and fixing, the continuous bar is cut, and the electron beam flow control electrode and the horizontal deflection electrode are electrically divided in the horizontal direction.