JPS625531A - Manufacture of planar display device - Google Patents

Abstract

PURPOSE:To prevent deformation of electron beam passage by forming an electron beam flow control electrode and a horizontal deflection electrode provided with continuous crosspieces and, after joining both sides of the crosspieces with other electrodes through spacers, cutting the crosspieces. CONSTITUTION:A back electrode, linear cathode, vertical focusing electrode, a deflection electrode, electron beam flow control electrode, horizontal focusing electrode deviation electrode, acceleration electrode and screen plate are housed in a glass bulb to form a planar display device. Horizontal deflection electrodes 22a-22n are provided with continuous crosspieces 23 of which both sides are connected to horizontal focusing electrodes via spacers 24a, 24b with glass frit 25. Then the crosspieces 23 are cut off the disconnect the electrodes 22a-22n electrically. The electron beam flow control electrode is formed in the same manner. Thus landing accuracy can be improved without generating deformation in an electron beam passage 26 when cutting the crosspieces 23.

Description

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

BACKGROUND OF THE INVENTION In recent years, with the aim of achieving a device that can display color television images on a flat display device using electron beams, the screen has been divided vertically into a plurality of sections. For each section, the electron beam is deflected vertically to display multiple lines, and further divided into multiple sections horizontally, and phosphors such as R, G, and B are sequentially emitted in each section. There is a system that displays a television image as a whole by controlling the amount of electron beam irradiation to the R, G, B, etc. phosphors using color video signals.

An example of the above-mentioned conventional flat panel display device will be described below with reference to the drawings.

As shown in FIG. 4, the conventional flat display device has a back electrode 1. Line cathode as electron beam source2. Vertical focusing electrodes 3a, 3b,
Vertical deflection electrode 4. Electron beam flow control electrode6. Horizontal focusing electrode 6. A horizontal deflection electrode 7, an electron beam accelerating electrode 8, and a glass container 9 are arranged, and the components are housed in the glass container and evacuated.

The electron beam flow control electrodes 6 each include a conductor 11 having a vertically long slit 10, and a plurality of electron beam flow control electrodes 6 are arranged in parallel in the horizontal direction at predetermined intervals. In this configuration example, 320 control electrode conductive plates 11a to 11n are provided (only 10 are shown in the figure). Each of the control electrodes 5 separates and extracts the electron beam into one picture element in the horizontal direction, and controls the amount of electron beam passing therethrough in accordance with the video signal for displaying each picture element.

Therefore, if 320 control electrodes 6 are provided, 32o picture elements per horizontal line can be displayed.

In addition, in order to display images in color, each picture element is R9G, B
Display is performed using phosphors of three colors, and the R, G, and B video signals are sequentially applied to each control electrode 5. Also 32
320 sets of video signals for one line are simultaneously applied to the zero control electrodes 6, and the video for one line is displayed at one time.

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

The horizontal deflection electrode A is composed of a plurality of conductive plates 13a and 1ab arranged vertically on both sides of a slit 12 provided in the horizontal focusing electrode 6, and a horizontal deflection voltage is applied between each conductive plate 13a and 1ab. is applied, the electron beams for each picture element are deflected in the horizontal direction, and the R, G, and B phosphors are sequentially irradiated on the screen 9 to cause them to emit light.

In this embodiment, the deflection range is the width of one picture element for each electron beam.

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 are made of a continuous crosspiece 16 with conductive plates 14 arranged in parallel at regular intervals.
For example, special @//f, 5
As shown in Japanese Patent No. 9-66927, the continuous crosspiece is cut after at least the surface is made of an insulating material or is connected to a spacer whose surface is insulated or connected to another electrode via a spacer. FIG. 6 shows an enlarged view of essential parts of a conventional example in which a horizontal deflection electrode 16 and a horizontal focusing electrode 1a are bonded via a spacer 18 and a bonding glass frit 19.

Problems to be Solved by the Invention However, with such a structure, when cutting the continuous crosspiece 2Q as shown in FIG. The trajectory of the electron beam was bent at the location where the beam passing portion 21 was greatly deformed, and the landing accuracy of the electron beam onto the screen was poor, causing local color unevenness. A similar thing happened at the electron beam flow control electrode.

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

Means for solving the problems and technical means of the present invention for solving the above problems are to support both sides of the continuous crosspieces of the element beam flow control electrode and the horizontal deflection electrode with spacers, and to attach a glass frit for bonding. It is to be joined with.

For production The effect of this technical means is as follows.

In other words, the continuous crosspiece of the electron beam flow control electrode and the horizontal deflection electrode is cut after the left and right sides of the crosspiece are joined even if there is no water parallel to the crosspiece. There is no deformation effect outside the joints on both sides. The trajectory of this useless electron beam is not bent,
The landing accuracy of the electron beam on the screen is improved.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. FIG. 1 is an enlarged view of the main parts of an embodiment of the present invention in which a horizontal deflection electrode and a horizontal focusing electrode are bonded with a glass frit for bonding via a spacer whose surface is made of an insulating material or whose surface is insulated. It is. In Figure 1, 2
2a 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 includes spacers 24&, 24
Horizontal focusing electrode 2 with bonding glass 7 lit 25 via b
It is joined with 9. The spacers 26 are provided on both sides of the crosspieces 23 in parallel with the continuous crosspieces 23, and when viewed from the Y-Y cross-sectional view, the spacers 26 support the crosspieces 23 on both sides.

For this reason, the crosspiece 23 is cut so that the horizontal deflection electrodes 22a to 22
When the electron beams are electrically separated from each other, the deformation that occurs at the cutting location is limited to only between the spacer 24a and the spacer 24b, and does not affect the electron beam passage section 26.

FIG. 2 shows a method of bonding a horizontal deflection electrode and a horizontal focusing electrode using seven pieces of bonding glass via a spacer in an embodiment of the present invention. In FIG. 2, a spacer 31 is formed by applying a bonding glass frit 30 to the surface of a horizontal focusing electrode 29 on a fired substrate 28 provided with pins 27. Install the horizontal deflection electrodes 32, align them in the X-Y directions with the bins 27, apply pressure in the Z direction with a stand bar, and heat to the melting/recrystallization temperature of the bonding glass film 30 in an atmospheric furnace. After the glass frit for bonding is recrystallized, it is cooled to complete the bonding.

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

Further, as another embodiment, electron beam flow control electrodes 34a to 34n are used as shown in FIG.
space + parallel to the continuous crosspiece 35 provided on both sides.
The same effect as the horizontal deflection electrode can be obtained by cutting the continuous crosspiece 35 and electrically separating the electron beam flow control electrodes 34a to 34n after supporting and bonding them with j3sa and 38b.

Effects of the Invention The present invention provides an electron beam flow control electrode and a horizontal deflection electrode having a shape having continuous crosspieces, and when joining with a spacer or bonding and fixing with another electrode via the spacer, the electron beam flow control electrode and the horizontal deflection electrode are formed in a shape parallel to the continuous crosspieces. Since both sides of the crosspiece are joined and fixed with spacers, and then the crosspiece is cut, the deformation that occurs at the branch cutting point does not affect the electron beam passage area, so the electron beam can reach the screen without bending the trajectory of the electron beam. The landing accuracy can be improved, and the reliability of the flat display device can be significantly improved.

[Brief explanation of the drawing]

Fig. 1a is an enlarged view of the main part showing the joining point of the horizontal deflection electrode and the horizontal focusing electrode according to an embodiment of the present invention;
FIG. 2 is a sectional view showing a method of joining a horizontal deflection electrode and a horizontal focusing electrode according to an embodiment of the present invention; FIG. Fig. 3 is a cross-sectional view taken along the Y-Y/ line in Fig. 3a, and Fig. 4 is a conventional plan view. Perspective view showing the mold display device, No. 5
The figure is a plan view showing the electron beam flow control electrode and the horizontal deflection electrode, FIG. It is a sectional view taken along YY/ line. 22a-22n...horizontal deflection electrode, 23...
... Crosspiece, 24a, 24b ... Spacer, 26
...Glass frit for bonding, 26...
Electron beam passing section, 34a to 34n... Electron beam flow control electrode, 35... Crosspiece, 36a, s6b
······Spacer. Name of agent: Patent attorney Toshio Nakao and one other person? J
---Ki M1・Las 7 Rizu 1 26-Denta Bee 4 Toue Shuttle 25 tJ pAz Diagram [Figure 3

Claims (1)

[Claims] It is equipped with a back electrode, a line cathode as an electron beam source, a vertical focusing electrode, a vertical deflection electrode, an electron beam flow control electrode, a horizontal focusing electrode, a horizontal deflection electrode, an electron beam accelerating electrode, and a screen plate. The electron beam flow control electrode and the horizontal deflection electrode are housed in a vacuum, and the electron beam flow control electrode and the horizontal deflection electrode are shaped to have a continuous crosspiece, and at least the surface is made of an insulating material, or the surface is bonded to a spacer whose surface has been insulated, or is connected to another surface through a spacer. When bonding and fixing the continuous crosspiece to the electrode, after bonding and fixing at least the left and right sides of the continuous crosspiece parallel to the crosspiece, the continuous crosspiece is cut, and the electron beam flow control electrode and the horizontal deflection electrode are connected horizontally. A method for manufacturing a flat display device characterized by electrically dividing the display device in a direction.