JPS60109156A - Color image tube - Google Patents

Abstract

PURPOSE:To reduce the number of control electrodes by using n electrode groups each formed by arranging stripe-like electrodes each having n openings at given intervals in horizontal direction and placing the electrode groups, at given intervals in the direction in which electron beams travel, in such a manner as to horizontally shift them from each other. CONSTITUTION:A modulation electrode consists of a first electrode group 41 formed by separately arranging vertical stripe-like electrodes each having three slit-like openings in horizontal direction. Similar electrode groups 42 and 43 are installed at given intervals in the direction in which electron beams travel. In each of the electrode groups 42 and 43, electrodes located at two-electrodes' intervals are connected to each common bus-bar. The electrode groups 41, 42 and 43 are horizontally shifted from each other by 1/3 pitch. A fluorescent screen 48 is formed by locating R, G and B phosphor stripes in positions corresponding to the openings with black stripes interposed. An image display can be performed by applying a signal to the modulation electrode 41 and controlling the passing and blocking of the beams by the voltage of the common bus-bars.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flat color picture tube for displaying color images used in color television receivers, computer terminal displays, and the like.

Conventional example 1. , l, lJ formation and its problems Conventionally, Bianba 4
, as shown in FIG. 1, is described in Japanese Patent Application Laid-Open No. 56-61<9'r', published as a video tube. For example, a phosphor 4b is uniformly formed over the entire surface with a transparent conductive layer 4a interposed therebetween. Opposing this fluorescent surface, control electrodes 8 corresponding to the number of picture elements, each having a long slit 6 in the vertical direction, are arranged at a predetermined distance i from each other along the horizontal direction. .

flj! Mesh electrodes 7 are arranged on the control electrode 8 at predetermined intervals, and the other inner surface 1 b (lil
A main deflection electrode 5 is arranged at l. - force, i. 41;, :1° of the light plane, i.e. 11' in the longitudinal direction of the control electrode 8;
7. ☆False L11; In rl, a vino and αl 2 which emit a horizontally long belt-shaped electron beam 3 are arranged. This beam source 2 consists of a tungsten cathode 2a stretched in the direction of water, an electrode 2C that surrounds this cathode and has a slit partially extending in the horizontal direction, to which approximately the same voltage as the cathode is applied, and a constant positive voltage. It consists of an accelerating electrode to which a voltage is applied. The main deflection type ['l(
, 5 to deflect the band-shaped electron beam 3 (+ii
An i-deflection electrode 2d is arranged.

In such a configuration, the unmodulated band-shaped electron beam 3 emitted from the beam source 2 is pre-deflected by the iffiff-type pole 2d and the main deflection electrode 5, and enters the fluorescent surface 4. is scanned at a constant speed in the vertical direction (in the direction of arrow V).The main deflection electrode 5 is partly placed between the main deflection electrode 5 and the human electrode 7 so that the voltage is low. After passing through the deflection electrode 2d, the electron beam 3 is incident on the fluorescent surface 4 side. -Tsuba image No. 111 is accumulated every 1 horizontal period 11, which is an image of 1 horizontal period. A signal is supplied to each control electrode 8 at the same time (, 1) and sequentially every horizontal period. A desired image is obtained by irradiating a portion corresponding to 8 and sequentially emitting light from the phosphor surface 4 in a line-sequential manner by scanning the band-shaped electron beam.

As mentioned above, there are two major problems with the conventional example:
There is one. The problem with 2i'>1 is that when a high voltage of several KV to 10 Kv is applied to the transparent electrode 4a of the fluorescent surface part 110 and an attempt is made to operate it, this high voltage causes the potential of the slit part 6 of the control electrode 8 to become high. Therefore, in order to control the amount of electron beam passing through the slintro, the control electrode 8
The voltage applied to becomes very high.

This is related to the second problem described below, but the control electrode 8
This greatly increases the power consumption of the circuit that drives the.

The second problem is that the number of control electrodes 8 corresponding to the number of picture elements in the horizontal direction is used, and the same number of circuits for driving each control 11 electrodes (blood 8) are required, and the horizontal angle When the number of control electrodes is increased in order to improve becomes.

When this capacitance becomes large, crosstalk occurs between signals applied to each control electrode 8 and horizontal resolution is impaired. 1. There is no way to prevent damage. Therefore, by increasing the current flowing through the circuit, the power consumption "t!" increases.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks by reducing the number of control electrodes 8 without lowering the horizontal resolution, and provides a one-stroke color picture tube with low power consumption, high resolution, and low resolution. The purpose is to obtain.

Structure of the Invention The present invention comprises a part that forms a horizontally long belt-shaped electron beam, a deflection part that deflects the belt-shaped electron beam in the vertical direction, a 7-trinox modulation part that modulates the electron beam for each pixel, and a picture tube having a face portion in which a phosphor is formed in a predetermined pattern. Note that the 7-Trinox modulation section has asn holes (both a and n are integers greater than 1) in the horizontal direction, or s')-shaped openings, and live electrodes are arranged at predetermined intervals. The first electrodes 11 are arranged in parallel with each other, and n sets of mold sands, in which striped electrodes each having n openings in the horizontal direction are arranged in parallel at a predetermined interval, are horizontally pitched to each other. It is constructed by shifting the beams and arranging them at a certain interval in the straight beam direction.

DESCRIPTION OF THE EMBODIMENTS The basic electrode configuration of the color picture tube of the present invention is shown in FIG. 2A.
, shown in B. A is a perspective view, and B is a view of a vertical section viewed from the horizontal direction.

In the figure, reference numeral 21 denotes an electron gun that generates a long strip beam 29 in the horizontal direction (H), and may have the same configuration as the beam generation source 2 in FIG. Reference numeral 22 denotes a preliminary vertical deflection form, which works together with a back electrode 23-a formed on the glass inner surface of the vacuum container 23 (partially shown) to direct the band-shaped electron beam 29 in the vertical direction (arrow 1 in 1). V) and the back electrode 23
The light is incident almost perpendicularly to the electrode 24 provided opposite to a. This electrode 24 has the same hole or slit-like opening as the matrix modulating section 26 described later, or is a mesh-like electrode, and a voltage is applied to the back electrode 23-a so as to obtain a high voltage. There is a C. Electrode 24
The band-shaped electron beam 29 ij that has passed through is incident on the matrix modulation section 25 . This 7-trinox modulation unit 25 will be described in detail later, but it divides the stray electron beam 29 into the number of picture elements in the horizontal direction, and modulates each divided electron beam in accordance with the image quality.

7 The electron beam iL passes through Trinox J4 section 25.
The high voltage applied to the metal back electrode ffi, 28b passes through the electrode 26, which serves as an electrostatic shield, so that it does not enter the matrix modulation section 26, and enters the screen 28 on which the phosphor 28a is formed, where it is emitted by the phosphor. Display an image on a light surface. The electrode 26 may be similar to the electrode 24, and by keeping the voltage applied to the electrode 26 relatively low, the modulation signal voltage etc. applied to each 11z pole of the matrix modulation section 25 can be reduced.

27 is a face glass.

On the other hand, in the second embodiment of the present invention shown in FIG. 3, the back electrode 23a shown in FIG.
It is divided horizontally into the same number of effective scanning lines in the vertical direction, and the beam scanning in the vertical direction is divided into two parts. This is done by switching the electron beam 29 so that it is incident on the electrode 24 every 1H (denoted as 1H). Therefore, electron gun 2
1, the preliminary vertical modulation electrode 22 shown in FIG. 2 is not required. Furthermore, two electrodes 26a and 26b are provided between the matrix modulation section 25 and the screen 28 to prevent the high voltage applied to the screen from entering the matrix modulation section 25. Each electron beam divided into directions is
Focus in the horizontal direction to obtain a small spot.

These two electrodes 26a.

26b preferably has the same hole or (d) slit-like opening at least in the horizontal direction as the matrix modulating section 25.

Next, the 7-trix modulation section 25 will be described in detail.

FIG. 4 shows a first embodiment of the matrix modulation section,
Figure 2, f! 4 is a horizontal cross-sectional view of the matrix modulation section 25 in FIG. 3. FIG. 3" circular or rectangular or slit-like openings are provided, and the long stripe-shaped electrodes 47i are placed in parallel in the horizontal direction. This is the first electrode. /j7.41 is used as a modulation electrode, and similar electrode groups 42.43 are provided at certain intervals in the direction of beam straight movement.A common bus line 42a is provided for each electrode -1 and every second electrode of these two electrode groups 42 and 43.

42b, 42C, and 43a, 43b, 43c
and each '+[pole group 41, 42°4
3 are arranged so as to be shifted from each other by 1/3 pitch in the water XV force direction. Then, on the phosphor screen 48 iJ: red (5), green (q), and blue (B) phosphor stripes are arranged at positions corresponding to each aperture via black stripes (hatched areas in the figure). A metal back electrode made of aluminum or the like is placed on top of the metal back electrode 4.
8b is formed. 47 is a face glass.

A method of driving the above matrix modulation electrode configuration will be explained using the signal waveform shown in FIG. Note that the signal waveform corresponding to each electrode is given the same number as t, 1, and the electrode.

1st station 4'&i: l! Y41 modulation electrode 41a,
4lb.

41 C371% Ir, -1 F rJ Tsuk.

Small size modulation voltage: 1 provisional 41a to R1 signal (41a -R
lsig), in order for the beam to pass through the aperture of each electrode corresponding to the position of R1 on the fluorescent surface, the generatrix 42
A voltage that allows the beam to pass (hereinafter referred to as beam-on voltage) is applied to the electrodes connected to a, 42c, 43a, and 43b. At this time, G1. The second one on the fluorescent position neck of B1. In order to prevent the beam from passing through the aperture of the third electrode group,
A beam cutoff voltage (hereinafter referred to as beam off voltage) is applied to the electrodes connected to the busbars 42b and 43C. :the result,
The beam modulated by the signal R1 at the modulation electrode 41a is R1
The light enters only the phosphor of the beam, causing it to emit light with an intensity corresponding to the amount of beam.

At this time, G is applied to the modulation electrodes 41b and 41C, respectively.
(4l b-G2sig), B(41c-B3si
g) ((If j is applied, the beam passes only through the apertures corresponding to the phosphor positions of G2. and B3 and enters the phosphor.

Next, a G signal (41a −G1 si
g), the beam passes only through the aperture of each electrode corresponding to the position 01 on the fluorescent surface.
It is sufficient to apply a beam-on voltage to the busbars 2b, 42c, 43a, and 43c, and a beam horn and to-off voltage to the busbars 42a and 43b. At this time, strange J, ++ electric pot 41b
, 41c is B (41b-B2sig).

When R (41c-R3s ig) is applied, the beams modulated by the respective color signals pass only through the apertures at the positions corresponding to the color light beams on the fluorescent surface.

Next, the B signal (41a J 51q) is applied to the modulation electrode 41a.
When applying , the bus lines 42a, 42b, 43b.

When a beam-on voltage is applied to 43C and a beam cut-off voltage is applied to bus lines 42c and 43a, the beam passes through the opening portion of each electrode corresponding to the position B1 on the fluorescent surface. At the same time, the modulation electrodes 41b and 41cK receive the R signal (41b-R
2sig) and a G signal (41C-G3sig), the beam passes through the apertures of each electrode corresponding to the positions of R2 and G3 on the fluorescent surface.

By performing the above two operations within 1H, it is possible to display the transmitted blurry image for 1H.

Next, a second embodiment of the 7-trinox modulator will be shown to the sixth person.

As in FIG. 4, an electrode group 51 in which vertically long striped electrodes each having six slits, round or rectangular openings horizontally provided therein and separated from each other in the horizontal direction and arranged side by side is used as a modulation electrode. Next, the striped electrodes of the first electrode group 51 are divided into two in the horizontal direction, and every other striped electrode has three openings, and a common bus line (52a, 52b),
(63a.

5sb), (54a, s4b,) and arranged horizontally in parallel. Third. Fourth electrode group 62°63, . 5
4 are installed at certain intervals in the beam direction. This second. Third. The fourth electrode group is shifted from each other by 1/3 pinch in the horizontal direction. The fluorescent surface has the same structure as that shown in FIG.

The driving force method for the 416-component matrix modulation section is shown in FIG. 5B. In this case as well, corresponding to each electrode (+ff −f
;;The waveform has the same number as the electrode.

In this case, the modulation electrodes 51a, 61b, 51CI...
Consider each of the... as one block.

- First, make the beam incident on the R1 phosphor block of the light surface 58.
The R signal (61a-Rlsig) is applied to 61a, and the on-voltage (4 beams) is applied to each electrode connected to the IL, I:J lines 52a, 63a, and 64a, and the on voltage is applied to the bus 52b.
, 53b, and 54b, the beam current 11 may be applied to each electrode connected to the electrodes 53b, 54b. In this way, only the beam R1 modulated by the video signal of R1 will be incident on the phosphor.

Next, in order to make the modulated Jl beam incident only on the G1 phosphor of the phosphor surface 58, the G1 signal (61a-G1 sig) is applied to the modulation type (--51a). A; Beam-on voltage is applied to each 'electrode connected to the J lines 52a, 53b, 54a, and the busbars 52b, 53a, 64
A beam-off voltage may be applied to each electrode connected to b.

Below, B1, R2, G2 . of the fluorescent surface 58. In order to make the beam incident on each of the phosphors B2, voltages as shown in FIG. 6B may be applied to each electrode.

By performing the above operations within 1H, the image of the transmitted television signal during 1H can be adjusted to 9.
It is possible to display ζ.

Next, a third embodiment of the 7-trinox modulator is shown in FIG.

Similar to FIG. 5, the first electrode ii! has vertically long strip-shaped electrodes each having six circular, rectangular, or slit-shaped openings, which are separated and placed side by side in the horizontal direction. l(
(!τ61 is used as a modulation electrode, and this modulation electrode is horizontally divided into three vertically long stripes. 62b.

62C), (63a, e3b, esc). The third electrode group 62,63 is set at a certain interval i:/f in the direction of beam curvature.
．． The third electric camellia group is 1/2 pitch in the horizontal direction / ζ position I
It is related to K.

Constructed as above/ζ 1st. Second. 3'11j,)
・Corresponding to the apertures of f+l view 161.62.63, R, G, and B color phosphors I
A fluorescent surface 68a consisting of a sheet is formed on a transparent fluorescent gas 67, and secondly, it is not possible to use metal. 1
68 b. Note that between the third electrode group 63 and the metallographic electrode 68b, there is a shift/converter shown in FIGS. 2 and 3, but there is a is not shown in the figure.

Driving waveform diagram B of the above 7 trinox modulation electrode configuration
Shown below. Also in this case, the modulation electrodes 61 a and 61 b
.

Consider each piece of... as one block.

The signal of R1 (61-Rlsig) is applied to the modulation electrode 61, and the beam is modulated by the signal of R1 at 1C and the beam is
．． In order for the beam to pass through the opening of the third electrode group 62, 63 and to be incident on the R1 phosphor stripe of the illuminant surface 68, the voltage ( Beam-on voltage) is −4, and the third voltage (+j
A beam-on voltage is also applied to the IU line 63a of <11' (il, it, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 3).
B1.112. It is necessary to prevent the beam from entering B2, and for this reason, the other busbars 62b of the second electrode group,
62c and the other busbars 63b and 63c of the third electrode group have a voltage for cutting off the beam (hereinafter referred to as beam cutoff'lt).
X pressure) is applied.

Under the above operating conditions, the modulation electrode 61 has R1 of I1,
When a signal (61-1t1 sig) is applied, one beam modulated by this 117-bow is incident only on the phosphor R1.

Next, the G1 signal (61-Glsig) is sent to the modulation superimposed i61.
In order to make the beam incident only on the phosphor of 113 G 1 to which R is applied, each generatrix of the second electrode group 62 is
The same operating voltage as in operation 1 is applied, the beam-on voltage is applied to the bus bar 63b of the third electrode group 63, and the other N lines 63a and 63c are applied.
It is sufficient to apply a beam cutoff voltage to .

Next, when the B1 signal (61-Blsig) is applied to the modulating electrode 61, in order to apply the beam only to the B1 phosphor, the beam-on voltage 62b is applied to the IU line 62b of the second electrode group 62, and other A beam cut-off voltage may be applied to the busbars 62a and 62C, and the same operational weight as in the operation of G1 may be applied to each busbar of the third electrode group 63.

Next, a signal of R2 (61-R2s i
g)/ At this time, in order to make the beam incident only on the phosphor of R2, apply (I ma t'j J to each generatrix of the second electrode group 62
Apply the same operating voltage as when operating Ii+4 El, and the third voltage 4) < i! -1 of 'I' 63, beam-on voltage on U line 63C, other J: No line 63a.

A beam cutoff voltage is applied to 63b.I) Drop 1:
, 1: I0 Next, when the G2 signal (61-G2sig) is applied to the modulation electrode 61, in order to make beam 1 incident only on the G2 phosphor, Iυ of the second electrode fjF 62 is applied. Beam-on voltage on line 62c, C1l on other busbars 62a, 62i)
, apply the beam cut-off voltage and apply the same voltage as that of the third electrode 63 when the third electrode 63 is in motion. .

Finally, the B2 signal (61-B2sig) is sent to the modulation electrode 61.
In order to make the beam incident only on the phosphor of B2 when G2 is applied, the same operating voltage as in the G2 operation is applied to each bus bar of the second electrode group 62, and the third electrode 7i' 1.63
It is sufficient to apply the same voltage to each bus bar as in the R1 operation.

A modulation electrode 61 in which a large number of the above electrodes 1'1 are arranged side by side in the horizontal direction.
By performing each of these steps within 1H, the image for 1H of the transmitted television signal is displayed.

Three embodiments of the matrix modulation section have been described above, but from the first embodiment, in the case of a modulation electrode having N openings, similar electrodes are generally used (N-1):I... It goes without saying that it is possible to extend the structure to a trinox modulator by constructing (N-1) sets of electrodes connected to N common busbars by shifting them by 1/N pitch in the horizontal direction and providing a certain interval in the beam straight direction. Nor.

Also, from the second embodiment, N=2n (an integer where n≧1)
In the case of a modulating electrode with apertures of 11, divide this into two electrodes and use two common IUs for every other electrode! n connected to
It can be extended to a 7-trinox modulation unit configured by shifting the electrode groups horizontally by 1/n pitch to create a certain interval in the beam straight direction, and furthermore, from the third embodiment, N=3 n ( For the modulating electrode having an aperture of n'l (4: an integer), n sets of electrodes, which are made by dividing the modulating electrode into three and connecting every two electrodes to three common busbars, are connected horizontally. It can be expanded to a x) modulation section that is configured to be shifted by 1/n pitch from each other in the beam direction and spaced at certain intervals in the beam curvature direction.

Therefore, from the above, in general N-・a-o(a, n
In the case of a modulating electrode having apertures (an integer of ≥1), it is divided into a and connected to (a-1), j... and a common four wires to form an n-element +1 electrode. Electricity (-9i /!”f
This is a 7-trinox modulation unit constructed by shifting 1/n pitch from each other in the horizontal direction and leaving a certain interval in the straight direction.

Incidentally, the relationship between the modulation electrode group and other electrode groups with respect to the straight beam direction does not matter.

Effects of the Invention As described above, the present invention is equipped with an electron gun that generates a band-shaped electron beam, and uses a main deflector consisting of a preliminary deflection electrode and a back electrode to convert the band-shaped electron beam into a voltage of the back electrode divided by a small width. Deflect vertically by control, N=a*n(a
A plurality of striped electrodes having apertures (an integer such that , n≧1) are arranged in parallel in the horizontal direction, a modulation signal is applied to the striped electrodes to modulate the beam, and the electrodes are divided into a (a -1)
Every other book, n sets of electrodes connected to a common fiJ lines are shifted by 1/n pitch in the horizontal direction and set at a certain interval in the beam straight direction. By applying a control voltage, a beam is made to enter a predetermined fluorescent surface position.In contrast to the conventional flat picture tube, in which a modulation electrode is configured for each pixel, the number of modulation electrodes is reduced. can be reduced, and the circuit for driving the modulation electrode is also reduced in proportion to this, resulting in a reduction in power consumption.

It's good, at least 2 or 3 7 trinox modulators
By providing one electrostatic shielding electrode within the other, it is also possible to lower the modulation voltage.

In the embodiment of the present invention described above, a band-shaped electron beam is generated, which is split or divided by the cooperation of the preliminary deflector and the back electrode voltage: li! I
7i111 Although a vertically deflected electron beam has been described, a band-shaped electron beam may be generated using the method disclosed in Tokai Publication No. Sho 53-74364, and the electron beam may be guided to the matrix modulation section of the present invention.

[Brief explanation of drawings]

1A and 1B are a front view and a sectional view showing an example of a conventional flat picture tube; FIGS. 2A and 2B are a perspective view and a sectional view showing the electrode configuration of a color picture tube according to the present invention; The figure is a cross-sectional view showing another embodiment of the electrode configuration of a color picture tube according to the present invention, and FIGS. FIG. 2 is a cross-sectional view showing an actual/1tlI example of the electrode configuration and its operation waveform diagram. 21... Band-shaped electron beam source, 22...
・Preliminary deflector, 23a... Back electrode, 24, 2
6... Electrostatic shield electric 4iL 25...
・Matrix modulation section, 28...Color fluorescent surface, 41, 42, 43.51° 52.53, 54, 6
1.62.63... Electrode group, 42a to 42c
, 43a-43c, 52a, 62b. 53a, 5sb, 54a, 54b, 62a ~
62c. 63a-63c... White bus line, 47.57.67 River.
・Face Gazis, 48, 58.68... Fluorescent surface. Name of the person Patent attorney Toshi Nakao 1 person Figure 1 S Figure 2 A Figure 2I71 Figure 4 43C' 5th CB) Figure 6

Claims (2)

[Claims] (1) Each color has a large number of sets of 12-light stripes of the three primary colors red, green, and blue repeatedly arranged at a position phase of 1200 relative to each other in a fixed order, and a fluorescent surface with a metal back layer behind them. Then, in the direction along the river stone scanning plane of the fluorescent surface,
An electronic iron for generating a long even electron beam in the horizontal direction is arranged, and a deflector is provided to change the direction of the electron beam from the electron 'A: to approximately JI'i, ll'Iff, toward the fluorescent surface. A 7-trinox modulation section is disposed on the fluorescent surface and the jl' row, and the matrix modulation section is arranged 1' in the horizontal direction.
J=a e n (a, n, '-1 integers) vertically extending striped electrodes with round, rectangular, or slit-like openings are separated from each other by the same pinch and are separated from each other in the water] 1/ direction. , ]k first electrode group, first electrode 1 step, 7j), each color) 11i11iIa
Divide them and place them horizontally side by side with 11 pieces of thickness,
(a-1) The second set of n sets in which every other book is connected by a common bus bar
~N+1 electrode group horizontally 1/n sequentially or in random order
A color picture tube characterized in that the tubes are pinch-shifted and arranged at predetermined intervals in the straight beam direction. (2) At least two electrodes with the same openings or mesh as the 7-trix modulation section, with a predetermined interval between the 7-trix modulators.
A color picture tube according to claim 1, characterized in that a Trinox modulation section is sandwiched therebetween.