JPH0244636A - Display device - Google Patents

Abstract

PURPOSE:To form a stereophonic image and high precision image by using one set of electron beam and two sets of electron beams totally six corresponding to three colors, red, green and blue. CONSTITUTION:One set of electron beams and two sets of electron beams 10a, 10b corresponding to red, green and blue are generated independently by an electron gun 11 simultaneously and deflected independently by a deflection coil simultaneously. The electron beams 10a, 10b are irradiated while pinching the center line X-X of the electron gun so as to pass the through hole 6a in a shadow mask, and run against two sets of 3-color fluorescent substances 13a. By this irradiation of two sets of electron beams the two sets can be made brighter with the identical information signal and the scanning density is made dense, and projection with stereophonic image is made practicable through a lenticular lens 18 with different information signal.

Description

DETAILED DESCRIPTION OF THE INVENTION C. Industrial Application Field The present invention relates to a display device, and particularly to one for displaying stereoscopic images and high-definition images.

[Conventional technology]

Color picture tubes generally used in display devices are most often of the shadow mask type. The conventional color picture tube 1 is
As shown in FIG. 7, there is a fluorescent screen 2 painted in three colors R-G-B, a shadow mask 3, and three R beams 417, G beams 4G, and B corresponding to R-G-B. Beam 4B
and an electron gun 5 that generates an electron beam 4 consisting of.

The electron beam 4 is deflected by a deflection coil 6 and strikes a predetermined fluorescent screen 2 via a shadow mask 3.

FIG. 8(A) is an enlarged view of part A in FIG. 7.

Shown as (B) and (C). In FIG. 8(A), the shadow mask 3 has a circular passage hole 6a formed therein, and the phosphor screen 2 has phosphors 7a of three colors R, G, and B arranged in a dot shape. . In FIG. 8(B), the shadow mask 3 is formed with a slot-shaped passage hole 6b, and the phosphor screen 2 is formed into a short R-G-
Phosphors 7b of three colors (B) are arranged. Figure 8 (
In C), the shadow mask 3 is formed with a blind grid (aperture grille) passing hole 6c, and the phosphor screen 2 has a striped radius.
Phosphors 7C of three colors G-B are arranged.

These various types of shadow masks 3 are placed approximately 10 mm in front of the phosphor screen 2, and are coated on a thin iron plate with a diameter of 0.2 mm.
Passing holes 6a (or 6b) in which holes of about 0.25 mm are regularly arranged at a pitch of 0.56 to 0.75 mm.

6c). This passage hole 6a (or 6b
, 6c), each phosphor 7a (or 7b, 7c) of three dots of R, G, and B on the phosphor screen 2 is used as one set.

The electron beam 4 generated from the electron gun 4 has a delta beam array in FIG. 8(A), a delta beam array in FIG. 8(B),
In (C), it is an inline type beam arrangement. This electron beam 4 is polarized by a deflection coil 6 based on the signal to be displayed and scans the entire surface of the phosphor screen 2, but each beam 4R, 4G, 4B passes through the passage hole 6a (or 6b, 6c) of the shadow mask 3. It reaches the phosphor screen 2 only when it passes through. Each beam 4R, 4G arrived.

4B is the corresponding R-G-B dot phosphor 7a.
(or 7b, 7c) only. That is, each beam 4R
, 4G, 4B deflection center and the passage hole 6 of the shadow mask 3
When the straight lines connecting the centers of a (or 6b, 6c) are extended, the respective R-G-B dot phosphors 7a (
or 7b, 7C).

Therefore, since each beam 4R, 4G, 4B is modulated by a color signal, a set of R-G-
It is designed to reproduce all colors by selectively emitting light from B/7 phosphors.

[Problem to be solved by the invention]

However, in the conventional display device, only dots of the RGBI group were passed through the passage hole of one shadow mask, so it was not suitable for displaying two-dimensional images such as stereoscopic images or displaying high-resolution images.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a display device suitable for stereoscopic images and high-definition images.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a 6-channel system that responds to a per-hole signal for passing an electron beam toward a shadow mask.
The present invention relates to a display device characterized by comprising an electron gun for generating an electron beam, and a fluorescent screen arranged with respect to the electron gun with the passage hole in between.

[Operation] The electron gun simultaneously generates six electron beams in response to signals, and these six electron beams pass through the passage holes of the shadow mask. Then, the amount of information of the signal reaching the phosphor screen is increased.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1, 2, and 3, and the same parts as those in the prior art will be given the same reference numerals and the explanation thereof will be omitted.

The color picture tube 1 is provided with two sets of electron guns 11, one set of three corresponding to R-G-B, that is, six electron beams 10 directed toward the shadow mask 3. This electron beam 10 consists of a set of three R-G-B electron beams 1.
0a and 10b, which are generated independently and simultaneously according to two types of color signals. The electron beams 10a and 10b are simultaneously deflected by deflection coils 12, 13 independently and simultaneously using two types of color signals, and reach the shadow mask 3. Furthermore, before the electron beam 10 reaches the shadow mask 3, as shown in FIG. It looks like this. Then, the electron beams 10a, 1
0b simultaneously passes through the single round passage hole 7a and strikes the phosphor screen 2, but this phosphor screen 2 is dot-shaped with R-G-B.
Two sets of phosphors 13a of three colors are arranged.

As shown in FIG. 2, an anode film 14 for the cathode of the electron gun 11 is arranged on the back side of the phosphor screen 2. The fluorescent screen 2 is formed on the back surface of the front glass 15 of the color picture tube 1. On the surface of the surface glass I5, a set of R-G-B phosphors 13a is provided, and a relay lens 16 is provided corresponding to each of the - lines. A lenticular lens 18 is provided on the surface of the relay lens 16 via a light shielding plate 17 for preventing leakage of light from the adjacent relay lens 16. Then, the light 19a corresponding to the electron beam 10a generated from the phosphor screen 2 is focused by the relay lens 10 just before the lenticular lens l8,
Thereafter, the parallel light beams are emitted from the lenticular lens 18 onto the surface of the color picture tube 1 at a predetermined angle. On the other hand, light 19b from the phosphor screen 2 corresponding to the electron beam 10b is transmitted through the relay lens 16 and
Although the light becomes parallel through the lenticular lens 18, it is emitted from the surface of the color picture tube 1 at a different angle from the light 19a.

Next, the operation of the apparatus of the present invention having the above configuration will be explained.

The electron gun 11 has a first set of different information contents. By supplying the second color signal, an electron beam 10a modulated by the first color signal is generated from the electron gun 11, and an electron beam 10a modulated by the second color signal is generated.
b is generated. These electron beams 10a and lOb are
The light is deflected by the deflection coils 11 and 12, passes through the shadow mask 30 passing holes 6a one after another, and reaches the phosphor screen 2. A phosphor 13a emitted by these electron beams 10a and 10b
The lights 19a and 19b are emitted to the front of the color picture tube 1 via the relay lens 16 and the lenticular lens 18. By setting the angle formed by these lights 19a and 19b to a value that allows the person observing the color picture tube to reach the left and right eyes independently at the observation position, the observer can simultaneously see different eyes. 1. An image that reproduces the second color signal can be viewed. Therefore, the first. If the second color signal is for a stereoscopic image, the viewer can view the stereoscopic image by looking directly into the color picture tube 1. Moreover,
The light shielding plate 17 prevents light from leaking from the adjacent relay lens 16, thereby reproducing a clear image.

In addition, as shown in FIG. 4, the angle formed by the lights 19a and 19b is increased so that the light 19a is emitted to the left of the color picture tube 1 in the direction indicated by the arrow R, and the light 19b is emitted to the right in the direction indicated by the arrow R. Make it radiate in the direction shown. And the first. If the second color signal is a completely different video signal, images P and Q of different information can be seen in the arrow R direction. That is, it is possible to receive images of dual information using a single picture tube.

Also, the lenticular lens 18 is removed, and the first. If the second color signal is the same information signal, the brightness of the front surface of the color picture tube 1 is two lights 19a.

19b, so it is twice as bright as before.

Further, the electron gun 11 has two sets of electron beams 10a, 10
b can be generated, so an image can be scanned at twice the scanning density for a single electron beam. The color signal obtained at this scanning density allows the electron beam to
0 is generated, and an electron beam [O] having twice as much information per single electron beam as in the prior art passes through the passage hole 6a of the shadow mask 3 and reaches the phosphor screen 2. Therefore, high-definition image light is generated from the phosphor screen 2.

In the above embodiment of the present invention, the shadow mask 3 is a circular passage hole 6a, and the phosphor screen 2 is applied to a color picture tube in which the phosphor 13a is arranged in a dot shape. Although described above, the present invention can also be applied to a color picture tube consisting of a slot-shaped passage hole 6b and a strip-shaped phosphor 13b, as shown in FIG. In this case, the electron beams 10a and iob are positioned across the center line XX. The phosphor 13b has two sets of three colors R, G, and B corresponding to a single passage hole 6b. Further, the present invention, as shown in FIG.
Passing hole 6c of blind lattice, phosphor 13c arranged in stripes
It can also be applied to color picture tubes made of In this case as well, the electron beams 10a and 10b are positioned with the center line XX in between. Similarly, two sets of phosphors 13c of R-G-8 are sequentially arranged in a striped pattern for a single passage hole 6b.

〔Effect of the invention〕

As described above, according to the present invention, the electron gun simultaneously generates six electron beams in response to a signal, and the electron beams pass through a single passage hole in the shadow mask and reach the phosphor screen.
The amount of information converted into light obtained from the phosphor screen is twice that of the conventional method. Therefore, it is possible to provide a display device particularly suitable for stereoscopic images and high-definition images.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a color picture tube applied to a display device according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of part A in FIG. 1, and FIG. 3 is an embodiment of the present invention. FIG. 4 is an explanatory diagram showing an example of use in an embodiment of the present invention, and FIG. 5 is an explanatory diagram showing an example of a color picture tube applied to the present invention. 6 is an explanatory diagram showing another example of a color picture tube applied to the present invention, FIG. 7 is a sectional view showing a color picture tube of a conventional device, and FIGS. 8(A) and (B) , (C) are respectively seventh
FIG. 2 is an explanatory diagram showing various forms of conventional color picture tubes by enlarging portion A of the figure. ■...Color picture tube, 2...Phosphor screen, 3...Shadow mask, 6a, 6b, 6c-passing hole, 10.10a, lOb...Electron beam, 11...
Electron gun, 13a13b, 13C...phosphor, 16...
・Relay lens, 18... Lenticular lens,
19a, 19b...light. (The horns are shown in Figure 2. Figure 1? 3c. Figure 6.

Claims (1)

[Claims] Equipped with an electron gun for generating six electron beams in accordance with a signal per passage hole for electron beams to pass toward a shadow mask, and a phosphor screen arranged with respect to the electron gun across the passage hole. A display device characterized by: