JPH0266830A - Manufacture of image display device and horizontal deflecting electrode basic member - Google Patents

Abstract

PURPOSE:To make the connection work easier and to improve the mass productivity by using n pieces of electrodes which consist of horizontal deflecting electrodes divided into n pieces, and a horizontal deflecting electrode device which has a binding member to connect between electrodes, and radiating beams to the binding member to divide the basic material into n pieces, after laminating them with a vertical deflecting electrode and the like through insulating spacers. CONSTITUTION:Electrodes 32a to 32f which are separated into three sets of electrode groups, for example, and a basic member 31 which has binding members 34 to connect electrodes each other are used. After laminating to compose an electrode beam control device by laminating the basic member 31 of a horizontal deflecting electrode 29e, other electrodes 29a to 29d, and a vertical deflecting electrode 29f through separators 30a to 30e, laser beams are radiated to the binding members 34 through penetrating holes 36 provided at the electrode 29f and a spacer 35e to separate the basic member 32 into three sets. The terminals 35a to 35f of the electrode 29e are connected to holding legs 37a to 37f of a container electrically and mechanically, and the holding legs 37a to 37f and the drawing-out terminals to a horizontal deflecting output circuit are connected.

Description

[Detailed Description of the Invention] Industrial Field of Application Conventional Technology Traditionally, cathode ray tubes have been mainly used as display elements for displaying color television images. It has been impossible to create a television receiver that is very long and thin in depth. In addition, although EL display elements, plasma display devices, liquid crystal display elements, etc. have recently been developed as flat display elements, all of them are insufficient in terms of performance such as brightness, contrast, and color display, and have not been put into practical use. It has not yet been reached.

Therefore, the present applicant proposed a new display device in Japanese Patent Application No. 5620618 (Japanese Unexamined Patent Publication No. 58-135590) to achieve a flat display device using electron beams.

This method generates an electron beam for each section when the screen is vertically divided into multiple sections, and displays multiple lines by deflecting each electron beam vertically for each section. However, it displays a television image as a whole.

First, a basic configuration example of the image display element used here will be explained with reference to FIG.

This display element includes, in order from the back to the front, a back electrode 1, a line cathode 2 as a beam source, and a vertical focusing electrode 3.
', a vertical deflection electrode 4, a beam flow control electrode 5, a horizontal focusing electrode 6, a horizontal deflection electrode 7, a beam acceleration electrode 8, and a screen plate 9 are arranged, and these are arranged in a flat glass bulb (not shown). It is housed inside a vacuum chamber.

The horizontal deflection electrode 7 is composed of a plurality of conductive plates 10a and 1ob arranged in a vertical direction on each side of the sulin 6a of the horizontal focusing chamber me, each electrode 10IL, 10b is applied with six levels of horizontal deflection voltage to horizontally deflect the electron beam for each picture element, and sequentially irradiate each of the two sets of phosphors R, (, B) on the screen 9. In this embodiment, the deflection range is the width of two picture elements for each electron beam.

The horizontal deflection signals applied to the electrodes 10a and 10b of the horizontal deflection electrode 7 are a pair of horizontal deflection signals ri and h' that change in six steps as shown in FIG.
7, h sequentially decreases and h' sequentially increases, changing in opposite directions. These horizontal deflection signals h' are electrodes 101L and 1 of the horizontal deflection electrode 7, respectively.
0b. As a result, each horizontally divided electron beam is transmitted to the R, G of the screen 9 during each horizontal period.
.

B+ B+ G+ B(Rlt Glr J+ R2+
It is horizontally deflected so that the phosphors of G2+B2) are sequentially irradiated with H/6. Thus, in each line raster, the electron beam is R1+ for each horizontal section.
G1. B1. R2, G2. Each phosphor of B2 is sequentially irradiated.

The vertical deflection operation is repeated for each field of the input television signal so as to correspond to the horizontal deflection operation as described above, and as a result, a moving television image is displayed on the screen 9.

However, in the image display device shown in FIG. 3, it is extremely difficult to assemble the pair of horizontal deflection electrodes located on both sides of each slit of the horizontal focusing electrode 6 according to the design, and in reality, assembly errors occur. arise. In this case, in a certain horizontal section, the electron beam correctly hits the R, G, and B phosphors of the screen 9 sequentially, but in other horizontal sections, the electron beam does not exactly hit a predetermined phosphor. A problem arises in that the phosphor collides with other parts or other phosphors.

Therefore, the present applicant proposed an image display device in Japanese Patent Application No. 58-7803 (Japanese Unexamined Patent Publication No. 59-132547) that solves the above-mentioned problem caused by the assembly error of the horizontal deflection electrode.

7-7 proposed in this patent application No. 58-7803 is divided into n groups (n =
By adding a horizontal deflection signal independently to each divided horizontal deflection electrode group, it is possible to correct the horizontal deflection for each group, and it is possible to correct the horizontal deflection over the entire horizontal range. This allows for accurate horizontal deflection.

FIG. 5 shows an example in which a large number of pairs of horizontal deflection electrodes are divided into two.

In FIG. 5, 11.12 is a pair of horizontal deflection electrodes, 1
3. j4 is a pair of horizontal deflection electrodes installed independently of the horizontal deflection electrodes 11.12, one of which is the horizontal deflection electrode 11.
A step-like horizontal deflection signal that gradually decreases is applied to each electrode 13, and a horizontal deflection signal that increases sequentially is applied to the other horizontal deflection electrodes 12 and 14, respectively.

In FIG. 6, 15 and 16 are digital horizontal deflection signals sent from the horizontal deflection processing circuit.

A digital signal that converts h' (Fig. 4) into an analog signal.
Analog (D/A) converters 17, 18 and 19°2o are horizontal deflection output circuits, respectively; horizontal deflection output circuit 17.
The output of the D/A converter 15 is added to 19, and the output of the D/A converter 16 is added to horizontal deflection output circuits 18 and 20. Then, the horizontal deflection signals changing in mutually opposite directions from the horizontal deflection output circuits 1 and 18 are sent to the horizontal deflection electrode 1.
In addition to signals 1 and 12, horizontal deflection signals changing in opposite directions from horizontal deflection output circuits 19 and 20 are sent to the horizontal deflection electrode 13.
．． Add to 14.

Furthermore, a DC voltage control circuit 21 is provided for the horizontal deflection output circuits 17 and 18, and a DC voltage control circuit 22 is provided for the horizontal deflection output circuits 19 and 20. This DC voltage control circuit 21.22 controls the DC bias voltage (v7 in Figure 4).
By changing the horizontal deflection signals that change in opposite directions, it is possible to change the potential between h' (FIG. 6). Since each can be adjusted independently, the amplitude of the horizontal deflection signal can be adjusted between the pair of horizontal deflection electrodes 11 and 12 and the pair of horizontal deflection types (i13, 14) independently of each other.

When the horizontal deflection electrodes 11, 12, 13, 14, each divided into n groups, are mounted in a flat glass container, a configuration as shown in FIG. 7 is adopted. In addition,
FIG. 7 shows a case where the horizontal deflection electrodes are divided into three sets.

That is, after fixing the horizontal deflection electrode together with each control electrode such as the other vertical deflection electrodes to the glass container 23 at its four corners with screws, etc., the horizontal deflection electrode 11. shown in FIG.
12, 13. Drawer parts 11a, 12 of the connecting part of 14
&, 132L, and 132L, and terminal extension portions 242L to 24f of the horizontal deflection electrodes corresponding to 14a are connected to an external circuit such as the above-mentioned horizontal deflection output circuit. In this connection, insulating tube 2
One end of the thin metal wire 26 passed through the wires 5a to 25f is connected to the lead-out portions 24ia to 24f, and the other end is connected to the terminal 27, respectively. Each terminal 27 is connected to an external circuit. The insulating tube is used in order to withstand vacuum pressure and prevent fluctuations in its absolute position.

It is.

Incidentally, in Japanese Patent Application No. 62-288762, the present applicant has proposed a vertical deflection electrode consisting of two comb-like conductive plates interlocking with each other on the same plane with an appropriate space between them. By using this vertical deflection electrode, as shown in FIG. 7, the electrode for controlling the entire electron beam can be composed of a flat conductive plate and can have a laminated structure.

Problems to be Solved by the Invention However, in the conventional configuration shown in FIG. ~2
There was a problem in that 5f was damaged and dust was generated inside the device and insulation failure occurred.

Furthermore, since the horizontal deflection electrodes were formed by stacking already separated electrodes, the workability of connecting the electrodes was poor, which hindered efforts to increase mass production.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image display device that facilitates connection work and is highly mass-producible.

Means for Solving the Problems In order to achieve the above objects, the horizontal deflection electrode base material of the present invention is provided with a pair of horizontal deflection electrodes sandwiching the path of the electron beam. In addition to emitting light by sequentially irradiating phosphors of multiple colors with horizontal deflection, a large number of pairs of horizontal deflection electrodes are divided into n (
n = an integer of 2 or more), and a horizontal deflection electrode base material constituting a horizontal deflection electrode of an image display device, in which a horizontal deflection signal is applied independently to each divided horizontal deflection electrode group, the horizontal deflection electrode base material comprising a plurality of horizontal deflection electrodes. It has a plurality of electrode parts each consisting of a pair of horizontal deflection electrodes, and these electrode parts are connected by a connecting part. After this horizontal deflection electrode base material is laminated with other electrode groups via insulating spacers, the horizontal deflection electrode base material This method is characterized in that a cutting beam is irradiated onto the joints of the materials, and the horizontal deflection electrode base material is divided into n groups to which horizontal deflection signals are applied independently.

By making the working horizontal deflection electrode base material into a structure in which each electrode part consisting of multiple pairs of horizontal deflection electrodes divided into n parts is connected to each other at a joint part, there is only one horizontal deflection electrode until the joint part is cut. It can be handled as a flat plate, improving workability. Furthermore, after laminating the joint part of this horizontal deflection electrode base material with other electrodes including the vertical deflection electrode via an insulating spacer, the horizontal deflection electrode which has already been cut and divided can be cut by irradiating a cutting beam and cutting it. Compared to the conventional manufacturing method of positioning and laminating the layers, it is possible to manufacture an image display device with good workability and positional accuracy.

Embodiment Hereinafter, an image display device according to an embodiment of the present invention will be described with reference to the drawings.

Each electrode for controlling the electron beam of the image display device and realizing image display, for example, a vertical focusing electrode 29d, a vertical deflection electrode 29f, and a horizontal deflection electrode 29e.

page 13 Horizontal focusing type 11290 + beam flow control electrode 29b.

The beam extraction electrode 29a and the like are stacked as shown in FIG. This laminated electron beam control means 28 has each flat electrode 29! L ~29f
are laminated with flat plate-shaped insulating spacers 3o2L to 3oe interposed therebetween, and their relative positions are adjusted and fixed by adhesive so that they are integrated and the electron beam is not obstructed on the way.

Now, in this embodiment, the horizontal deflection electrode 29el constituting the electron beam control means 28 has a configuration in which it is divided into three parts in a stacked state.

The base material 31 of this horizontal deflection electrode 29e has the structure shown in FIG.

That is, the base material 31 has electrode parts 322L to 32f that constitute three sets of electrode groups after being separated, and connection plate parts 332L and 33b that are unnecessary after being separated, and these electrode parts 322L ~32f, connecting plate portion 331L, 3
3b are connected at a connecting portion 34 so that they can be cut and separated.

Each of the electrode portions A2a to 32f147\- is provided with terminals 35a to 35f for connection to the horizontal deflection output circuit (see FIG. 6).

When stacking this horizontal deflection electrode 296, the above-mentioned base material 31 is first stacked on the stack of electrodes 291L to 29d and spacers 30a to 3od that have already been stacked. After that, the spacer 306 and the vertical deflection electrode 2sf are laminated in this order. These spacers 30e.

The vertical deflection electrode 29f is provided with a through hole 36, which reaches the connecting portion 34 of the base material 31 of the horizontal deflection electrode 298. Therefore, by passing the stacked vertical deflection electrode 29f and the through hole 36 of the spacer 308 and irradiating the connecting portion 34 of the base material 31 with a laser beam, the base material 31 can be connected to the electrodes 32a to 32f, and the electron beam can be controlled. It becomes possible to separate the connecting plate portions 33a and 33b, which are not used for other purposes. After separation, for example, as shown in FIG. 5, three sets of electrodes are formed in which the comb-shaped electrodes are arranged so as to interlock with each other.

Although only a portion of the through holes 36 are shown in FIG. 1, they are provided to correspond to the connecting portions 15'\34 shown in FIG. 2, respectively.

Note that, since the connecting portion 34 and the through hole 36 are located outside the effective screen of the image display device, problems such as deterioration of the reproduced image do not occur.

The electron beam control means 28 having the three-divided horizontal deflection electrode 298 configured as described above has positioning holes 282L to 282L to 28 (i) formed in the squares thereof in a storage container (not shown). , for example, as shown in the conventional example (FIG. 7). At this time, the terminals 35a to 35f of each set of electrodes of the horizontal deflection electrode 29e are bent so that the upper ends provided on the container side can be supported. L-shaped support legs 37a to 37f
electrically connected to. Support legs 37a-3f are each connected to terminal 27 (FIG. 7), and then to a horizontal deflection output circuit.

As described above, according to this embodiment, (1) the electrode section 32 is separated into three electrode groups;
A base material 31 having connectors a to 32f and a connecting portion 34 that connects the electrode portions is used.

(2) Base material 31 of horizontal deflection electrode 298 and other electrodes 29a
~29d, vertical deflection type 1i29f and spacer 30a~
After forming the electron beam control means in a laminated manner by laminating the electron beam control means through the vertical deflection electrode 29f and the through hole 36 provided in the spacer 30e, the laser beam is passed through the connecting portion 34.
The base material 31 is separated into three groups.

(3) Each terminal 35a to 35f of the horizontal deflection electrode 29e
are electrically and mechanically connected to the support legs 372L to 37f of the container, and the support legs 372L to 37f are connected to the extraction terminal 2 to the horizontal deflection output circuit.

As a result, the horizontal deflection type 129e can be treated as a single flat plate during assembly work, which improves workability compared to the conventional method in which separate horizontal deflection electrodes are stacked for each set. can. By still connecting to the horizontal deflection output circuit, which is an external circuit, through the support legs, compared to the conventional method, which used thin metal wires and insulated tubes to connect the terminal of the horizontal deflection electrode and the external circuit. Connection work is easy.

As a result, workability in the manufacturing process of the image display device can be improved, and mass productivity can be increased.

Effects of the Invention According to the present invention, n horizontal deflection electrodes are divided into n parts.
Using a horizontal deflection electrode base material having two electrode parts and a connecting part that connects the electrode parts, this horizontal deflection electrode base material is laminated with a vertical deflection electrode etc. via an insulating spacer, and then the insulating spacer and the vertical deflection The horizontal deflection electrode can be treated as a single flat plate in the process of manufacturing image display devices by irradiating the cutting beam onto the connecting portion through the through hole provided in the electrode to divide the base material into n parts. This makes it possible to improve work efficiency and improve the accuracy of alignment work with other electrodes. As a result, it is possible to provide an image display device that is highly mass-producible.

[Brief explanation of the drawing]

FIGS. 1a and 1b are perspective views and partially cut away perspective views illustrating a method of manufacturing an image display device according to an embodiment of the present invention, and FIGS.
The figure is a plan view of the horizontal deflection electrode base material, FIG. 3 is an exploded perspective view of a conventional image display device, FIG. 4 is a waveform diagram for explaining the operation of the image display device, Go to 18-1 FIG. 6 6 is a plan view of a conventional horizontal deflection electrode, FIG. 6 is a circuit diagram of a main part of a conventional image display device, and FIG. 7 is a partially cutaway perspective view of a conventional image display device. 298 ・ Horizontal deflection electrode, 31 ... base material, 32
a to 32f...electrode section, 34...connection section.

Claims (2)

[Claims] (1) The screen on the screen is divided horizontally into multiple sections. In each horizontal section, phosphors of multiple colors such as red, green, and blue are arranged horizontally, and the electron beam is directed in the horizontal direction. It is divided into sections, and a pair of horizontal deflection electrodes are provided in each section so as to sandwich the path of the electron beam, and each electron beam is deflected in the horizontal direction for each horizontal section by the pair of horizontal deflection electrodes. In each horizontal section, the phosphors of the plurality of colors are sequentially irradiated to emit light, and the plurality of pairs of horizontal deflection electrodes are divided into n (n = an integer of 2 or more). A method for manufacturing an image display device in which a horizontal deflection signal is applied independently to each horizontal deflection electrode group, the method comprising coupling n electrode parts each consisting of n divided horizontal deflection electrodes with the electrode parts. A process of laminating multiple types of electrodes for controlling an electron beam together with the horizontal deflection electrode via the horizontal deflection electrode base material and an insulating spacer, using a horizontal deflection electrode base material having a connecting portion to connect the horizontal deflection electrode base material; A method for manufacturing an image display device, characterized in that the horizontal deflection electrode base material is divided into n parts by irradiating the connecting portion with a cutting beam through a through hole provided in the insulating spacers laminated on the vertical deflection electrode. . (2) The screen is divided horizontally into multiple sections, and phosphors of multiple colors such as red, green, and blue are arranged horizontally in each horizontal section, and the electron beam is directed in the horizontal direction. It is divided into sections, and a pair of horizontal deflection electrodes are provided in each section so as to sandwich the path of the electron beam, and each electron beam is deflected in the horizontal direction for each horizontal section by the pair of horizontal deflection electrodes. In each horizontal section, the phosphors of the plurality of colors are sequentially irradiated to emit light, and the plurality of pairs of horizontal deflection electrodes are divided into n (n = an integer of 2 or more). A horizontal deflection electrode base material for an image display device, in which a horizontal deflection signal is applied independently to each horizontal deflection electrode group, comprising n electrode portions each consisting of a plurality of horizontal deflection electrodes divided into n parts; A horizontal deflection electrode base material having a connecting part that can be cut with a cutting beam that connects electrode parts.