JPS63116346A - Plate type picture display device - Google Patents

Abstract

PURPOSE:To simplify positioning work by laminating electrodes on a reference pin and laying an electrode on the side of a linear cathode on a vertical scanning electrode for inserting the tip part of the reference pin into an escape part. CONSTITUTION:A vertiyal scanning electrode 12, a glass substrate 13, an insulating spacer 11 and an electrode 1 and pressed to be fixed as a whole for producing thickness accuracy of the laminated electrodes 1-3. And, the tip part of a reference pin 8 is inserted inside an escape part 14. Accordingly the projection length from a supporting stand 7 of the reference pin 8 exceeds a prescribed distance from the supporting stand 7 to the glass substrate 13 provided with the vertical scanning electrode 12. Thereby, the work to position the electrode 1 or the like on the reference pin 8 is simplified moreover being able to surely perform it and prevent a linear cathode 10 from breaking away from the reference pin 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flat image display device used in color television receivers, computer terminal displays, and the like.

2. Description of the Related Art Recently, flat image display devices have been widely used in the field of displaying images, characters, and the like. These flat image display devices include flat picture tubes. The present applicant previously filed Japanese Patent Application Laid-open No. 60-189848 and Japanese Patent Application Laid-open No. 60-19
A flat picture tube was proposed in Publication No. 3242.

The configuration will be explained below with reference to FIG.

In reality, each electrode is housed in a glass container, which is a vacuum envelope, but the vacuum envelope is omitted except for some parts in the figure to make the internal electrodes clear. Further, in order to clarify the horizontal and vertical directions of the screen on which images, characters, etc. are displayed, a horizontal direction H and a vertical direction V are illustrated on the face plate portion. Vertically long linear cathode 101
A plurality of linear cathodes 01 are arranged independently at equal intervals, and an oxide cathode is formed on the surface of the tungsten wire. The number of linear cathodes 101 and the spacing between them are arbitrary. For example, if the display screen size is 10 inches, the spacing between the linear cathodes 101 and 20 linear cathodes 101 is approximately 10 inches. It is arranged with a length of approximately ]60III m in the direction. A face plate portion 102, which is a screen portion separated from the linear cathode 101, and a vertical scanning electrode 103 adjacent to the linear cathode 101 are arranged so as to sandwich the linear cathode 101. The vertical scanning electrodes 103 are horizontally elongated (equal pitch, electrically divided and supported on an insulating support 104. These vertical scanning electrodes 103 display, for example, a normal television image. If the number of horizontal scanning lines in the vertical direction (NTSC
(approximately 480 electrodes) are formed as independent electrodes. Note that the vertical scanning electrode 103 is 1/1 of the number of horizontal scanning lines.
It may be n books. Between the linear cathode 101 and the face plate 102, from the linear cathode 101 side, a first grid electrode (hereinafter referred to as G electrode) 105, a second grid electrode (hereinafter referred to as G electrode) 106, A third grid electrode (hereinafter referred to as G3 electrode) 107 and a fourth grid electrode (hereinafter referred to as G4 electrode) 108 are arranged. The G1 electrode 105 is a planar electrode having an opening 109 (see FIG. 5) in a portion corresponding to the linear cathode 101, and is divided between adjacent linear cathodes 101, and a video signal is applied to each electrode. beam modulation. G, electrode 106 and G, electrode 107 have openings 110, 111 (see FIG. 5) similar to G1 electrode 105, and are not vertically divided. G4 electrode 108 is G2 electrode, pole 106
, G, has an aperture 112 (see FIG. 5) that is the same as the apertures 110 and 111 of the electrode 107, or is wider in the horizontal direction than in the vertical direction. G4 electrode 108 and face plate 10
20 horizontal deflection electrodes 113A, 113B, 113C
are arranged symmetrically with respect to the straight axis of the electron beam from each linear cathode 101 and at the same spacing as the linear cathode spacing.

The horizontal deflection electrodes 113A, 113B, and 113C are formed on the surface of the insulating support 114 by plating or vacuum deposition, and perform horizontal focusing and horizontal deflection. A light emitting layer consisting of a phosphor 115 and a metal back electrode 116 is formed on the inner surface of the face plate 102. The phosphor 115 is formed as stripes or dots of light (R1, green (Gl), and blue (Bl) in the horizontal direction during color display.

Next, the operation of the flat picture tube described above will be explained.

In FIG. 5, a current is passed through the linear cathode 101 to heat it, and a voltage approximately the same as the potential of the linear cathode 101 is applied to the G1 electrode 105 and the vertical scanning electrode 103. At this time, the electron beam also travels through the linear cathode 101 toward the G1 electrode 105, G electrode 106, and each electrode 105.1
A voltage (approximately 100 to 500 V) higher than the potential of the linear cathode 101 is applied to the G2 electrode 106 so that the electron beam passes through the opening provided at 06 and 10.111. Here, the electron beam is Gl, Gt electrode 105.106
To control the amount passing through each aperture 110,111 of
This is done by changing the voltage of the G+ electrode 105. The electron beam that has passed through the aperture 111 of the Gt electrode 106 is transferred to the G electrode 107, the G4 electrode 108, and the horizontal deflection electrodes 113A, 113B, and 113C that face each other with the electron beam in between.
A predetermined voltage is applied to these electrodes so that the electron beam forms a small spot on the fluorescent screen. Here, the beam focus in the vertical direction is performed by an electrostatic lens formed at the exit of the aperture 112 of the electrode 108, and the beam focus in the horizontal direction is performed by the horizontal deflection electrodes 113A, 1.
It can be obtained by changing each center voltage applied to 13B and 113C. Further, these horizontal deflection electrodes 113A, 113B, and 113C each have two systems of common devices a113A-aSb, 113B-a, b.
, 113 C-aSb, and through these busbars, a sawtooth wave or step wave deflection power with a horizontal scanning period is simultaneously superimposed on each horizontal focus voltage, and each electron beam is horizontally aligned with a predetermined width. deflected in the direction

The deflected electron beam stimulates the phosphor 115 to form a luminescent image on the screen. At this time, in order to obtain a color image, etc., when each electron beam horizontally scans the phosphor 115 as described above, a modulation signal of a color corresponding to the phosphor of each color on which the electron beam is incident is sent to the G1 electrode 105. It is sufficient to apply it to .

Next, vertical scanning will be explained with reference to FIGS. 6 and 7. As described above, by controlling the voltage of the vertical scanning electrode 103 so that the potential of the space surrounding the linear cathode 101 is more positive or negative than the potential of the linear cathode 101, the voltage from the linear cathode 101 is reduced. The generation of electrons is controlled. At this time, the linear cathode 101 and the vertical scanning electrode 1
03, the voltage for controlling ON/OFF of the electron beam from the linear cathode 101 can be small. When the interlace method is adopted for the vertical scanning electrode 103, in the first field, an electron beam is generated from the vertical scanning electrode 103A for one horizontal scanning period (IH) (hereinafter referred to as ON). 1 between the next IH
A signal to turn on the electron beam is applied to 03C, and then a signal to turn on the electron beam only during IH is applied to every other vertical scanning electrode, and when 103X, which corresponds to the bottom of the screen, is completed, the signal to turn on the electron beam is applied to every other vertical scanning electrode. The scan is complete. In the next second field, a signal is simultaneously applied from the vertical scanning electrode 103B to turn on the electron beam only during IH, and one frame of vertical scanning is finally completed by scanning up to 103Y.

Figures 8 and 9 also show the signal processing system applied to the G1 electrode for displaying television images using a cathode ray tube having multiple electron beam generation sources in the horizontal direction, such as the flat color cathode ray tube mentioned above. Refer to and explain. Based on the television synchronization signal 142, a timing pulse generator '144 generates timing pulses for driving circuit blocks to be described later. First, the video 141 demodulated by one of the timing pulses is converted into a digital signal by the A/D converter 143, and the signal between IH is input to the first line memo IJ-145. When all the signals between IHs are input, the signals are simultaneously transferred to the second line memory 146, and the next IH signal is also input to the first line memory 145. Second line memo IJ-146
The signals transferred to D are stored and retained during IH, and
The signal is sent to the /A converter (or pulse width converter) 147, where it is converted to the original analog signal (or pulse width modulation signal), amplified, and applied to each 01 electrode of the cathode ray tube. be done.

Here, the line memory is used for time axis conversion, and its specific explanation will be given using FIG. 9. Number of electron beams used to scan the display screen area (
In other words, if the number of cathodes is A, then the video signal insertion time T of the video signal 151 between certain IHs is divided into T/A, and the time axis of the video signal of each divided period is multiplied by T time. This signal 152 is applied to each corresponding G electrode 105. In this way, an image covering the entire IH is displayed, and by sequentially performing vertical scanning, the entire image can be synthesized on the screen.

In this flat picture tube, a plurality of electrodes 105.1
It is important to stack the electrodes 06, 107, and 108 with good precision (alignment).In a conventional flat picture tube (image display device), each electrode 105, 106 .107 (108 is omitted from illustration) and an insulating spacer 91 interposed between these are provided with reference holes 92 that serve as positional references, and these reference holes 9
2 is fitted into a reference pin 94 fixed to a support stand 93,
The electrodes 105, 106, 107 and the insulating spacer 91 are laminated with high precision. A spring member 95 is attached to the support base 93.
The linear cathode 101 stretched by the electrode 105 is brought into contact with the spacer 96 provided on the electrode 105 to maintain a constant distance from the electrode 105, and the linear cathode 101 is brought into contact with the reference pin 94 so that the electrode 105 is kept constant. It is aligned with the center line of the electron beam passage hole 109 etc. (see FIG. 5).

A vertical scanning electrode 103 is arranged on the electrode 105 with an insulating spacer 97 interposed therebetween. The vertical scanning electrodes 103 are made by patterning a conductive material made of metal or oxide on a glass substrate 104 or the like using a photoetching method. Appropriate weight is applied over the entire surface. Therefore, the glass substrate 104 provided with the vertical scanning electrodes 103 is set to have the same size as the outer diameter of the electrodes 105, 106, and 107, or a larger size. Therefore, the height of the reference pin 94 for positioning the electrodes 105, 106, 107 and the linear cathode 101 is higher than the insulating spacer 97 that determines the distance between the electrode 105 and the vertical scanning electrode 103. Don't let it stand out.

Problems to be Solved by the Invention However, the thickness of the insulating spacer 97 is actually 0.1 mm.
Since the length of the reference pin 94 is approximately 1 mm, the length of the reference pin 94 is approximately 1 mm.
05, 106, 107, and the thickness of the insulating spacer 91, it becomes quite short, about 1 to 3 fl. Therefore, in addition to handling, alignment, and processing, warping may occur in the insulating spacer 91, electrodes 1, 05, 106, 107, etc.

Even if the reference hole 92 of the electrode 105 etc. is once fitted into the reference bottle 94 and stacked, the electrode 105 etc. will be removed from the reference bottle 9 during one operation or the like.
4, it becomes difficult to finally align each electrode 105 and the like. In addition, when the linear cathode 101 is brought into contact with the reference bottle 94 as described above to improve positional accuracy, the linear cathode 101 and the vertical scanning electrode 103
Since the distance between the reference bin 94 and the reference bin 94 is similarly narrow, there is no margin for the length of the reference bin 94, so even if the linear cathode 101 is brought into contact with the reference bin 94, there is a risk that the linear cathode 101 may come off from the reference bin 94.

The present invention solves the above-mentioned conventional problems, and allows the positioning of electrodes etc. to be performed easily and reliably, and even when the linear cathode is brought into contact with the reference bottle, the linear cathode can be separated from the reference bottle. It is an object of the present invention to provide a flat panel image display device that can prevent such problems from occurring.

Means for solving the problems and the technical means of the present invention for solving the above problems is that a plurality of electrodes are positioned with insulating spacers interposed in a reference bottle set on a support stand. are laminated,
The electrode on the linear force hood side, which is stretched on the support base, is overlapped with the vertical scanning electrode arranged on the glass substrate via an insulating spacer, and the tip of the reference bottle is connected to the recess formed on the glass substrate. It was inserted into the section.

Effects According to the present invention, the above-mentioned configuration allows the reference bin to be made longer than the conventional configuration, so that one positioning operation can be easily and reliably performed without electrodes etc. coming off the reference bin. Further, even when the linear cathode is brought into contact with the reference bottle, it can be stably positioned.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

First, a first embodiment of the present invention will be described.

1 and 2 show a flat panel image display device according to a first embodiment of the present invention, with FIG. 1 being a side view of the main parts, and FIG. 2 being a perspective view of vertical scanning electrodes and a glass substrate.

As shown in FIG. 1, a plurality of (three in the illustrated example) electrodes 1
．． 2.3 is formed by etching a metal plate, etc., and is an electron beam passage for guiding electrons generated by heating a linear cathode 10 (described later) onto a fluorescent screen (see reference numeral 14 in FIG. 4). Holes (see numerals 109 to 112 in FIG. 5) are formed.

These electrodes 1.2.3 are maintained at a predetermined distance with an insulating spacer 4 interposed therebetween. A reference hole 5 (one not shown) is provided at both ends of these electrodes 1.2.3 and an insulating spacer 40, and a thin wire-shaped spacer 6 made of an insulating material is provided at both ends of the electrode 1.・Ru. Electrode 1.2.
A pair of support stands 7 for supporting the parts 3 and the like are used (one is not shown), and are made of an insulating material. Support stand 7
A reference bottle 8 is planted inside by adhesive or other means,
A spring member 9 is attached to the outside of the support base 7. The reference holes 5 formed in the electrodes 1, 2, 3, etc. are fitted into the reference bin 8, and the electrodes 1, 2, 3 are precisely positioned on the support base 7 with the insulating spacer 4 interposed. It is laminated. A linear cathode 10 is stretched between spring members 9 provided on a support stand 7 (one may be a fixed stand), and this linear cathode 10 is brought into contact with a spacer 6 to maintain a constant distance from the electrode 1. It is also in contact with the reference bottle 8 and aligned on the center line of the electron beam passage hole of the electrode 1 and the like. A vertical scanning electrode 12 is provided on the electrode 1 via an insulating spacer 11, and as is clear from FIGS.
Alternatively, a conductive material made of oxide is photoetched. A reference bottle 8 is attached to the glass substrate 13.
A slit-shaped relief portion 14 is formed at a position corresponding to . These vertical scanning electrodes 12, glass substrate 13, insulating spacers] 1, electrodes 1, etc. are stacked electrodes 1.2.3
In order to achieve thickness accuracy, the entire structure is fixed under pressure. The tip of the reference bottle 8 is inserted into the recess 14. Therefore, the hanging length of the reference bottle 8 from the support base 7 is such that the length of the reference bottle 8 protrudes vertically from the support base 7 to a predetermined distance or more from the glass substrate 13 on which the electrode 12 is provided. The work of positioning the first grade to the base pin 8 can be easily and reliably performed, and the linear cathode 1o can be prevented from coming off from the reference bin 8.

FIG. 3 shows a second embodiment of the invention.

In this embodiment, the relief portion 14 is formed in the shape of a round hole, and the other configurations are the same as in the first embodiment.

Note that the glass substrate 13 on which the vertical scanning electrodes 12 are formed is as follows:
It may be a part of the pure nitrogen envelope. In this case, the second
The circular hole-shaped relief portion 14 of the embodiment is closed by adhering a high-grade material to the outside thereof, or is formed into a blind hole. In addition, electrode 1.
2.3 is the reference bottle 8 by gluing the insulating spacer 4 with adhesive.
It may be arranged so that it fits into the . In addition, the vertical scanning electrode 12
may be separated from the glass substrate 13. In addition, the present invention can be modified in various ways without departing from its basic technical idea.

Effects of the Invention As described above, according to the present invention, a plurality of electrodes are positioned and stacked on a reference bottle set up on a support base with an insulating spacer interposed, and the electrodes are stacked on a glass substrate with an insulating spacer interposed. The tip of the reference bottle is inserted into a recess formed in the glass substrate, overlapping the vertical scanning electrode placed on the glass substrate. Therefore, the reference bin can be made longer than the conventional configuration, so even if the electrode part warps when positioning it in the reference bin, the electrode part will not come off from the reference bin, and the positioning process will be easier. can be done easily and reliably. Further, even when the linear cathode is positioned by contacting the reference bottle, the linear cathode does not come off the reference bottle.

[Brief explanation of the drawing]

1 and 2 show a flat panel image display device according to a first embodiment of the present invention, in which FIG. 1 is a side view of main parts, FIG. 2 is a perspective view of vertical scanning electrodes and a glass substrate, and FIG. The figures show a second embodiment of the present invention, in which a perspective view similar to that shown in FIG. 2, FIG. A perspective view of the electrode section, FIG. 7 is a timing chart for explaining the operation of the vertical scanning electrode, FIG. 8 is a signal processing system diagram of the flat image display device, FIG. 9 is a diagram explaining the video signal, and FIG. 10 is a conventional diagram. FIG. 2 is a side view of main parts of the flat-plate image display device of FIG. 1.2.3... Electrode, 4... Insulating spacer, 5...
・Reference hole, 6...Spacer, 7...Support stand, 8...
- Reference bottle, 10... Linear cathode, 11... Insulating spacer, ]2... Vertical scanning electrode, 13... Glass substrate, 14... Relief part. Name of agent: Patent attorney Toshio Nakao and one other persontJ
x Figure H2 Figure 4 Bochchi/Ran Figure 3 Figure 5 Trace Figure 7 "] 1038 , J
j L-1111----"/ρ3's/σJY-----1------11--
Gotoichiichi Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] A plurality of electrodes are positioned and stacked on reference pins set up on a support stand with an insulating spacer interposed between them, and a linear cathode side electrode stretched on the support stand is attached to a glass substrate through an insulating spacer. A flat image display device, wherein the reference pin is overlapped with a vertical scanning electrode disposed above, and a tip end of the reference pin is inserted into a relief part formed in the glass substrate.