JPH08186843A - Stereoscopic image display device - Google Patents

Abstract

PURPOSE: To simply realize the image quality with high accuracy by adopting the configuration that a lenticular lens is arranged on a glass face being a fluorescent material front face in the vertical direction and left/right images are alternately displayed on the fluorescent material corresponding to the lenticular lens. CONSTITUTION: A lenticular lens 53 sticked to a front face of a glass case 52 is arranged in parallel with a fluorescent material 51. A part 53 of the lenticular lens 53 and fluorescent materials 51a, 51b correspond respectively to one part or plural parts in the horizontal direction. The light emitted from the fluorescent material 51a reaches a left eye with the lenticular lens 53 corresponding in this way and the light emitted from the fluorescent material 51b reaches a right eye, then the image is recognized as a stereoscopic image pattern. That is, the left video signal and the right video signal are alternately displayed on the screen and the video image is seen through the lenticular lens 53, then the left video image reaches the left eye and the right video image reaches the right eye, then the stereoscopic image is recognized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention displays an image as a whole by deflecting an electron beam for each section when a screen on a screen is divided into a plurality of pieces in the vertical direction to display a plurality of lines. Related to the device.

[0002]

2. Description of the Related Art The basic structure of a conventional image display device will be described with reference to FIG.

The display element has a back electrode 1, a line cathode 2 as a beam source, a beam extraction electrode 3, a beam flow control electrode 4, a focusing electrode 5, a horizontal deflection electrode 6, and a vertical deflection electrode 7 in this order from the rear to the anode side. , A screen plate 8, etc. are arranged and housed inside a vacuum container.

A linear cathode 2 as a beam source is stretched in the horizontal direction so as to generate an electron beam which is linearly distributed in the horizontal direction. In the invention, only 7 of 2 a to 2 g are shown). In this configuration, the line cathode spacing is 3 m
Assuming that the number of m is 30 and the number of the line cathodes is 2 to 2 mm. The distance between the line cathodes cannot be set freely, and is regulated by the distance between the vertical deflection electrode 7 and the screen 8 which will be described later. These wire cathodes 2
In this structure, a surface of a tungsten rod having a diameter of 10 to 30 μm is coated with an oxide cathode material. As will be described later, the above-mentioned line cathode 2 is controlled so as to sequentially emit an electron beam from the upper line cathode 2a to the lower line cathode 2 at regular intervals. The beam extraction electrode 3 has a plurality of through holes 10 which are arranged in a row in the horizontal direction facing each of the line cathodes 2a to 2m at regular intervals, and through which the electron beam emitted from the line cathode 2 is penetrated. Take out through.

The beam flow control electrode 4 controls the amount of the electron beam generated from the line cathode 2 in synchronization with the horizontal deflection timing, which will be described later, corresponding to the picture element of the video signal.

The horizontal deflection electrode 6 is the beam flow control electrode 4
The through holes 14 are composed of a plurality of conductive plates 18a and 18b arranged vertically along both sides in the horizontal direction, and a horizontal deflection voltage is applied to each conductive plate. The electron beam for each picture element is deflected in the horizontal direction, and the R, G, and B phosphors are sequentially irradiated on the screen 8 to emit light. In this configuration, each electron beam is deflected by 2 trio.

The vertical deflection electrode 7 is composed of a plurality of conductive plates 19a and 19b arranged in the horizontal direction at intermediate positions in the vertical direction of the through hole 14, and the vertical deflection voltage is applied to each pole. Corresponding 30 pairs of vertical deflection conductors are constructed, drawing 240 horizontal scan lines vertically on the screen 8. As described above, in this configuration, the horizontal deflection electrodes 6 and the vertical deflection electrodes 7 are arranged in a comb shape. Further, by setting the distance to the screen 8 longer than the distance between the horizontal and vertical deflection electrodes, it becomes possible to irradiate the screen 8 with the electron beam with a small deflection amount. This makes it possible to reduce horizontal and vertical deflection distortion.

The screen 8 is formed by coating the back surface of a glass plate with a phosphor in a stripe shape. Although not shown, metal back and carbon are also applied. The phosphor is profitable by irradiating the electron beam for one electrode of the beam flow control electrode 4 in the horizontal direction to irradiate the phosphor pairs of three colors of R, G, and B for two trios, and vertically. It is applied in stripes in the direction.

In FIG. 5, the broken lines drawn on the screen 8 indicate vertical divisions displayed corresponding to the plurality of line cathodes 2, and the two-dot chain line indicates each of the plurality of beam control electrodes 4. The corresponding horizontal divisions are shown. FIG. 6 shows an enlarged view of one section partitioned by a broken line and a two-dot chain line. As shown in FIG. 6, the R, G, and B phosphors for 2 trios in the horizontal direction and the width for 8 lines in the vertical direction are provided. The size of one section is 1m in the horizontal direction in this example.
m, vertical direction 3 mm.

Although the phosphors of three colors R, G and B are shown in a stripe shape in FIG. 6, they may be arranged in a delta shape. However, when they are arranged in a delta shape, it is necessary to apply a horizontal deflection waveform and a vertical deflection waveform suitable for each.

Note that, in FIG. 6, for convenience of explanation, the vertical and horizontal dimensional ratios are different from the actual image displayed on the screen.

Further, in this structure, R, G, and B phosphors for 2 trio are provided for each electrode of the beam flow control electrode 4, but it is composed for 1 trio or 3 trio or more. May be. However, the R, G, and B video signals of 1 trio or 3 trios or more are sequentially applied to the beam flow control electrode 4, and it is necessary to perform horizontal deflection in synchronization therewith.

Next, the operation of the drive circuit for driving this display element will be described with reference to FIG. First, the drive part that irradiates the screen 8 with the electron beam to display the electron beam will be described.

The power supply circuit 22 is a circuit for applying a predetermined bias voltage to each electrode of the display element, and applies a DC voltage of V3 to the beam extraction electrode 3 and a DC voltage of V8 to the screen 8. The line cathode drive circuit 26 uses the vertical synchronizing signal V and the horizontal synchronizing signal H to create a line cathode drive pulse (i-ma). FIG. 8 shows the timing chart. Each wire cathode 2a ~
As shown in FIG. 7 (a-m), the second pulse is heated by the current flowing while the drive pulse is at a high potential, so that the drive pulse (a-m) emits electrons during a low potential period. The heating state is maintained. As a result, electrons are emitted from the 30 line cathodes 2a to 2ma only during the 8 horizontal scanning periods in which low potential drive pulses (a to ma) are applied. During the period in which a high potential is applied, the potential applied to the line cathodes 2a to 2m is higher than the potential around the line cathode 2 determined by the bias voltage applied to the beam control electrode 4 and the beam extraction electrode 3. Electrons are not emitted from the line cathode because the potential that is present is higher. In order to configure one screen, it is sufficient to sequentially switch the potentials from the upper line cathode 2a to the lower line cathode 2m by every 8 scanning periods.

Next, the deflection portion will be described. The deflection voltage generation circuit 40 includes a direct memory access controller (hereinafter referred to as a DMA controller) 41, a deflection voltage waveform storage memory (hereinafter referred to as a deflection memory) 42, and a digital-analog converter (hereinafter referred to as a D / A converter). 43h,
The vertical deflection signals v1 and v2 and the horizontal deflection signals h1 and h2 are generated.

In this configuration, regarding the vertical deflection signal,
In consideration of overscan, 240 horizontal scanning periods are displayed in one field. Further, the memory address area storing the vertical deflection position information corresponding to each line is divided into a first field and a second field, and each has a set of memory capacity. When displaying, the data is read from the corresponding deflection memory 42 and the D / A converter 4 is read.
It is converted into an analog signal at 3v and applied to the vertical deflection electrode 7. The vertical deflection position information stored in the deflection memory 42 is composed of substantially regular data for every 8 horizontal scanning periods, and the D / A converted waveform also becomes a vertical deflection signal of approximately 8 stages. However, as described above, the memory capacity for two fields is provided so that the position can be finely adjusted for each horizontal scanning.

Further, with respect to the horizontal deflection signal, it is necessary to horizontally deflect the electron beam in six steps in one horizontal scanning period, and a memory is provided so that the deflection potential can be finely adjusted for each horizontal scanning. Therefore, in order to display 480 horizontal scanning periods in one frame, a memory of 480 × 6 = 2880 bytes is required, but since the data of the first field and the second field is shared, it is actually 1440 bytes. You are using memory. At the time of display, the deflection information corresponding to each horizontal scanning line is read from the deflection memory 42, and D
The signal is converted into an analog signal by the / A converter 43h and added to the horizontal deflection electrode 6. In summary, during the display period excluding the vertical blanking period of the vertical period, the electron beam emitted from the line cathode applying the low-potential drive pulse of the line cathodes 2a to 2m is the beam. It is horizontally divided into 120 sections by the extraction electrode 3 to form 120 electron beam arrays. The electron beam is controlled by the beam control electrode 4 for each section, as will be described later, and the horizontal deflection is applied with a pair of horizontal deflection signals h1 and h2 which change in almost six steps as shown in FIG. Electrodes 7 a, 7
R, G of the screen 8 during each horizontal display period
Phosphors such as 1, B1 and R2, G2, B2, etc. are sequentially irradiated for each horizontal display period / 6. Thus, the raster of each horizontal line will emit an electron beam for each of the 120 sections.
A color image can be displayed on the screen 8 by modulating with a video signal corresponding to 1, G1, B1 and R2, G2, B2.

Next, the electron beam modulation control portion will be described. First, in FIG. 7, signal input terminals 23R, 23
Each R, G, B video signal added to G, 23B is 1
It is added to 20 sets of sample and hold circuit sets, 31a to 31n. The sample and hold groups 31a to 31n are respectively for R1, G1, B1, and R2, G2,
It is composed of six sample and hold circuits for B2. The sampling pulse generation circuit 34 has a horizontal cycle (6
In the horizontal display period (about 50 μs) of 3.5 μs), each of the 120 sets of sample hold circuits 31a to 31n is for R1, G1, B1, and R2, G2, B.
720 corresponding to the sample and hold circuit for 2 (12
0 × 6) sampling pulses Ra1 to Rn2 are sequentially generated. The 720 sampling pulses are distributed to 120 sample hold circuit groups 31a to 31n, respectively.
As a result, the video signals of R1, G1, B1, R2, G2, and B2 for each two picture elements when one line is divided into 120 pieces are individually added to each sample and hold circuit group. Sampled and held. 120 sets of sample-held R1, G1, B1, R
The video signals of 2, G2, and B2 are simultaneously transferred by the transfer pulse t to the 120 sets of memories 32a to 32n after the completion of the sample hold for one line, and are held there for the next one horizontal scanning period. The held signal is applied to 120 switching circuits 35a to 35n. The switching circuits 35a to 35n are R1, G1, B1, and R, respectively.
2, G2, B2, and individual output terminals and a common output terminal for sequentially switching and outputting them, and the switching pulses r1, g1, b1, r2, g added from the switching pulse generating circuit 36.
Switching control is performed simultaneously by 2 and b2.

The switching pulses r1, g1, b
1, r2, g2, and b2 divide each horizontal display period into six, and each horizontal display period / 6 switching circuit 35a-3.
5n are switched and the respective video signals of R1, G1, B1, R2, G2, and B2 are time-divided and sequentially output, and supplied to the pulse width modulation circuits 37a to 37n. Each switching circuit 3
The outputs of 5a to 35n are added to 120 pulse width modulation (hereinafter referred to as PWM) circuits 37a to 37n, and R1 and
The pulse width is modulated according to the magnitude of each of the video signals of G1, B1, R2, G2, and B2, and the output. The outputs of the pulse width modulation circuits 37a to 37n serve as control signals for modulating the electron beam, and are output from the beam control electrode 4 of the display element 120.
Each is individually added to the conductive plate of the book.

Next, the timing of horizontal deflection and display will be described. R in the switching circuits 35a to 35n
Switching of video signals of 1, G1, B1, R2, G2, and B2, and electron beams R1 and G by the horizontal deflection drive circuit 41
The synchronous control is performed so that the switching timing and the order of the horizontal deflection of the phosphors of 1, B1, R2, G2, and B2 to the phosphors completely match. Thus, when the R1 phosphor is irradiated with the electron beam, the irradiation amount of the electron beam is R1.
Controlled by a control signal, hereinafter G1, B1, R2, G
2 and B2 are controlled similarly, and R1 of each picture element,
The emission of each of the G1, B1, R2, G2, and B2 phosphors is controlled by the video signals of R1, G1, B1, R2, G2, and B2 of the picture element, and each picture element becomes the input video signal. Therefore, the light is displayed. This control is simultaneously executed for 120 sets of one line (two pixel elements each), an image of 240 pixel elements on one line is displayed, and 240 lines of one field are sequentially performed from the upper line, An image is displayed on the screen 8. Further, the above-described operations are repeated for each field of the input video signal, and a television signal or the like is displayed on the screen 8.
Is displayed in. The basic clock required for this configuration is shown in FIG.
Is supplied from the pulse generating circuit 39 shown in FIG. 1 and the timing is controlled by the horizontal synchronizing signal H and the vertical synchronizing signal V.

[0021]

However, the image display device configured as described above has a problem that a flat screen is displayed but a stereoscopic screen is not displayed. The present invention provides a stereoscopic image display device by simple means.

[0022]

In order to solve the above problems, in the stereoscopic image display device of the present invention, the electron beam, which is a feature of the image display device, is reliably irradiated to a predetermined phosphor. The input video signal position and the projected display position have a one-to-one relationship, and the display position is fixed.
Taking advantage of such characteristics, a lenticular lens is arranged vertically on the glass surface in front of the phosphor, and the left and right images are alternately projected on the phosphor corresponding to the lenticular lens and viewed through the lenticular lens. You can see a stereoscopic image.

[0023]

According to the present invention, with the above construction, a stereoscopic image can be viewed without special glasses.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIGS. 1 (a), 1 (b),
2C, FIG. 2A, FIG. 2B, and FIG. 2C are examples of a partial configuration diagram of the stereoscopic image display device of the present invention. 3 and 4 are examples of configuration diagrams of the drive circuit. The first embodiment will be described below with reference to FIGS. 1 and 3.

In FIG. 1, reference numeral 51 is a phosphor coated in the order of R, G, B in a stripe pattern. 52 is a glass container. Reference numeral 53 denotes a lenticular lens attached to the front surface of the glass container, which is arranged in parallel with the phosphor 51.

FIG. 1A is a partial perspective view of the stereoscopic image display device according to the first embodiment of the present invention. As shown in FIG. 1B, 53a forming a part of the lenticular lens 53 and phosphors 51a and 51b are respectively R in FIG.
1, G1, B1, R2, G2, B2 correspond to one or more sections in the horizontal direction. The light emitted from 51a reaches the left eye and the light emitted from 51b reaches the right eye by the lenticular lenses 53 corresponding to each other, and is recognized as a stereoscopic screen. FIG. 1 (c) is a view of a glass container in which the front surface is integrally processed as a lenticular lens.

FIG. 3 shows an example of the drive circuit in the first embodiment. In FIG. 3, 22 is a power supply circuit, 23
R, 23G and 23B are left side video signals, 24R, 24G,
Reference numeral 24B denotes a right side video signal, and these signals change with time, but are shown as fixed symbols for convenience. Two
6 is a line cathode drive circuit, 31a-n are sample hold circuits, 32a-n are memories, 34 is a sampling pulse generation circuit, 35a-n are switches, 36 is a switching pulse generation circuit, 37a-n are PWM circuits, 39 is Pulse generator circuit, 41 DMA controller, 42 deflection memory, 43h, v digital-analog converter (D / A)
Is.

The operation of the drive circuit of the stereoscopic image display device configured as described above will be described with reference to FIGS.

The left-side video signals 23R, 23G and 23B and the right-side video signals 24R, 24G and 24B enter sample hold circuits 31a to 31n, respectively. 23R of the left side video signal goes to Ra1 of the sample hold circuit 31a, and 2R
3G goes to Ga1 of 31a, 23B goes to Ba1 of 31a,
In addition, 24R of the right side video signal goes to Ra2 of 31a and 24G
Is connected to Ga2 of 31a, and 24B is connected to Ba2 of 31a, and the same is connected to 31b to 31n. By connecting in this way, the sample-hold circuits 31a to 31n receive horizontal pulses of the left-side video signals 23R, 23G and 23B and the right-side video signals 24R, 24G and 24B from 31a to 31n by the pulse from the sampling and hold pulse generating circuit 34. Holds two trio of directions. In the case of this circuit, the width of the lenticular lens 53 is 2 trios in the horizontal direction of the phosphor 51.

After sample-holding these video signals,
It is transferred to the memories 32a to 32n. In this case, the memory 31
In the entire a to n, one line of the left and right video signals is alternately stored in memory, and the video signals stored in the memories 32a to n are sequentially switched by the switches 35a to 35n by the switching pulse output from the switching pulse generation circuit 36. , P
The pulse width is modulated by the WM circuits 37a to 37n and applied to each beam flow control electrode 4. In this way, the left side video signals 23R, 23G, 23B and the right side video signals 24R, 24G, 24B are alternately displayed on the screen 8. By watching this image through the lenticular lens,
As shown in FIG. 1B, the left image reaches the left eye and the right image reaches the right eye, which can be viewed as a stereoscopic screen. Here, unlike the conventional cathode ray tube (CRT), the electron beam emitted from the cathode ray 2, which is a feature of the present image display device, reaches a certain phosphor surely, so that the input left image shown in FIG. The signals 23R, 23G, and 23B and the right-side video signals 24R, 24G, and 24B are sure to be ensured by the phosphor 51.
A and 51b are reached, and a stereoscopic screen with high accuracy and no image shift is obtained.

Further, in order to set the width of the lenticular lens to 4 trio in the horizontal direction of the phosphor 51, the sample hold circuits 31a to 31n, the memories 32a to n, and the switches 35a to 35n.
It suffices that each n has a double capacity. In this way, the width of the lenticular lens can be arbitrarily set.

As described above, the stereoscopic image display device can be constructed extremely easily without significantly changing the conventional circuit.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS.

In FIG. 2, reference numeral 51 is a phosphor coated in the order of R, G, B in a stripe shape. 52 is a glass container. Reference numeral 54 denotes a lenticular lens that is attached to the glass container 52 and is alternately arranged in the vertical direction for each predetermined section, and is arranged so as to be parallel to the phosphor 51.

FIG. 2A is a partial perspective view of a stereoscopic image device according to the second embodiment of the present invention. As shown in FIG. 2B, 54a and phosphors 51a, 51b and 54b and 51c, 51d, which form a part of the lenticular lens 54, which are alternately arranged in the vertical direction for every certain section, are shown in FIG. It corresponds to one section or a plurality of sections in the horizontal direction such as R1, G1, B1, R2, G2 and B2.
The light emitted from 51a by the corresponding lenticular lens 54 reaches the left eye, the light emitted from 51b reaches the right eye, the light emitted from 51c reaches the right eye, and the light emitted from 51d reaches the left eye. Here, the lenticular lenses 54a and 54b are just the lenticular lenses 54.
The position is displaced by half the width of. Therefore, the right-side video signal and the left-side video signal are switched in the vertical direction of the lenticular lens 54 by a certain section by a method described later. In this way, the light reaching the left and right eyes is recognized as a stereoscopic screen. In FIG. 2C, the front surface of the glass container is integrally processed as a lenticular lens as in the first embodiment.

FIG. 4 shows a second embodiment of the drive circuit. In FIG. 4, 22 is a power supply circuit, 23R, 23G,
23B is a left side video signal, 24R, 24G and 24B are right side video signals, 25 is a left and right video signal switching circuit, 26 is a line cathode drive circuit, 27 is a left and right video signal switching pulse generating circuit, 31a to n are sample and hold circuits, 32a. ~ N
Is a memory, 35a to n are switches, 36 is a switching pulse generation circuit, 37a to n are PWM circuits, 39 is a pulse generation circuit, 41 is a DMA controller, 42 is a deflection memory, 43h and v are digital / analog converters (D / D).
A).

The operation of the drive circuit of the stereoscopic image display device configured as described above will be described with reference to FIGS. 2 and 4.

The left-side video signals 23R, 23G and 23B and the right-side video signals 24R, 24G and 24B enter the left and right video signal switching circuit 25, respectively, and the switching pulse from the left and right video signal switching pulse generating circuit 27 causes the lenticular lens to move. It is switched at the timing of the period corresponding to one division in the vertical direction. The switched left and right video signals enter the sample and hold circuits, respectively.

23R of the left side video signal at a certain timing
Goes to Ra1 of the sample hold circuit 31a, and 3G goes to 3
1a to Ga1, 23B to 31a of Ba1, and 24R of the right side video signal is Ra of the sample and hold circuit 31a.
2、24G to 31a Ga2、24B to 31a B
connected to a2. Sample hold circuit 31b to
Similarly connected to n. At the next timing, 23R of the left side video signal is Ga2 of the sample hold circuit 31a.
23G to 31a Ga2, 23B to 31a Ba
2 and 24R of the right side video signal is the sample and hold circuit 3
1A is connected to Ra1, 24G is connected to 31a of Ga1, and 24B is connected to 31a of Ba1. Thereafter, the sample and hold circuits 31b to 31n are similarly connected.

At the next timing, the connection is switched to the initial connection. After that, it is repeated in sequence. In this way, the left and right video signals 23R, 23G, and 23B and the right video signal 24 from 31a to n are respectively caused by the pulse from the sample hold circuit 31a to n bankruptcy pull hold pulse generation circuit 34.
Holds two trio of R, 24G, and 24B in the horizontal direction, and switches each one section in the vertical direction of the lenticular lens. In the case of this circuit, the width of the lenticular lens 54 corresponds to 2 trios of the phosphor 51 in the horizontal direction. These video signals are transferred to the memories 32a to 32n after the sample hold. In this case, the left and right video signal lines for one line are alternately stored in the memories 31a-n as a whole, and the video signals stored in the memories 32a-n by the switches 35a-n by the switching pulses output from the switching pulse generation circuit 36. Are sequentially switched, the pulse widths can be modulated by the PWM circuits 37a to 37n, and the pulse widths are applied to each beam electrode 4. In this way, the left side video signals 23R, 2 are displayed on the screen 8.
3G, 23B and right side video signals 24R, 24G, 24B are projected alternately in the horizontal direction and shifted by 2 trios for each section in the vertical direction.

By viewing this image through the lenticular lenses which are alternately shifted by half width for each vertical section, the left image reaches the left eye and the right image reaches the right eye as shown in FIG. It can be seen as a screen. The electron beam emitted from the cathode ray 2, which is also a feature of this image display device, reaches the predetermined phosphor unlike the conventional cathode ray tube (CRT), so that the input left side image signal shown in FIG. 23R, 23G, 23
B and the right side video signals 24R, 24G, 24B surely reach the phosphors 51a, 51b, 51c, 51d, and form a highly accurate stereoscopic screen without image shift. In addition, since the lenticular lenses are vertically shifted for each fixed section, a finer image can be obtained.

Further, in order to set the width of the lenticular lens to be 4 trio in the horizontal direction of the phosphor 51, the sample hold circuits 31a to 31n, the memories 32a to n, and the switches 35a to 35a.
It suffices that each n has a double capacity. In this way, the width of the lenticular lens can be arbitrarily set.

As described above, also in the second embodiment, the stereoscopic image display device can be constructed very easily without significantly changing the conventional circuit.

Next, FIG. 1C and FIG. 2C will be described in detail. FIG. 1C shows the lenticular lens 53 of the first embodiment integrally formed on the front surface of the glass container 52 with the container. FIG. 2C shows the lenticular lens 54 of the second embodiment integrally formed on the front surface of the glass container 52 with the container. In either case, conventionally, it was necessary to form the lenticular lens from a molded product such as acrylic and bond the lenticular lens to the glass container of the display device with an adhesive or the like. In this case, it is necessary to precisely align the positions of the fluorescent screen stripe and the lenticular lens, but it is difficult because there is a distance (glass thickness) between the fluorescent screen and the lenticular lens. If this alignment is misaligned, the stereoscopic screen will not be accurate, and the image itself will be distorted and displayed.

On the contrary, in the present invention, since the glass container of the display device is integrally molded with the lenticular lens, the positional relationship between the glass container and the lenticular lens is fixed, so that the fluorescent substance can be applied very easily and accurately. The positional relationship with the lenticular lens will be accurate. Therefore, the present invention can realize a stereoscopic image device with extremely high accuracy. Further, since the lenticular lens and the glass container of the display device are integrally molded, it is not necessary to prepare an individual lenticular lens, the cost can be reduced, and the time for mounting and the like can be saved. Become.

[0047]

As described above, according to the present invention, a stereoscopic image display device can be easily constructed by a simple method, and it is possible to provide a highly accurate and efficient device which has not been available in the past.

[Brief description of drawings]

FIG. 1A is a perspective view of a part of a stereoscopic image display device according to a first embodiment of the present invention. FIG. 1B is a positional relationship diagram between a phosphor and a lenticular lens of the stereoscopic image display device. Image of integrated processing of lenticular lens of image display device with glass container

FIG. 2A is a perspective view of a part of a stereoscopic image display device according to a second embodiment of the present invention. FIG. 2B is a positional relationship diagram between a phosphor and a lenticular lens of the stereoscopic image display device. Image of integrated processing of lenticular lens of image display device with glass container

FIG. 3 is a drive circuit diagram of a stereoscopic image display device that is a first embodiment of the present invention.

FIG. 4 is a drive circuit diagram of a stereoscopic image display device that is a second embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a basic structure of a conventional image display device.

FIG. 6 is an enlarged view of the screen

FIG. 7 is a basic drive circuit diagram of a conventional image display device.

FIG. 8 is a timing chart of various waveforms of the image display device.

[Explanation of symbols]

2 wire cathode 3 beam extraction electrode 4 beam flow control electrode 5 focusing electrode 6 horizontal deflection electrode 7 vertical deflection electrode 8 screen 22 power supply circuit 23 right input video signal 24 left input video signal 25 left and right video signal switching circuit 26 line cathode drive circuit 26 'Linear cathode front stage drive circuit 27 Left and right video signal switching pulse generation circuit 31 Sample hold circuit 32 Memory 34 Sampling pulse generation circuit 35 Switching circuit 36 Switching pulse generation circuit 37 PWM circuit 39 Pulse generation circuit 40 Deflection signal generation circuit 41 DMA controller 42 Deflection Memory 43 D / A converter 50 Line cathode drive output transistor 51 Phosphor 52 Glass container 53 Lenticular lens 54 in the first embodiment of the present invention 54 Lenticular lens in the second embodiment of the present invention

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04N 5/74 DA

Claims (3)

[Claims] 1. A screen coated with a phosphor that emits light when irradiated with an electron beam, a line cathode that generates an electron beam for each vertical section obtained by vertically dividing the screen on the screen, and A vertical deflection electrode for vertically deflecting the electron beam generated by the line cathode, a separating means for separating the electron beam into horizontal sections and irradiating the screen with the horizontal section, On the screen of the screen, a horizontal deflection electrode for horizontally deflecting the electron beam in a plurality of steps until reaching the screen and an amount of irradiation of the screen with the electron beam separated for each horizontal section are controlled. A beam flow control electrode for controlling the light emission amount of each picture element, and a lenticular lens arranged in the vertical direction on the front surface of the screen,
A stereoscopic image display device in which the beam flow control electrodes hold the left and right video signals in a sample and hold circuit and sequentially switch them through a memory circuit so that the left and right video signals are projected alternately corresponding to a lenticular lens. 2. A screen coated with a phosphor that emits light when irradiated with an electron beam, a line cathode that generates an electron beam for each vertical section obtained by vertically dividing the screen on the screen, and A vertical deflection electrode for vertically deflecting the electron beam generated by the line cathode, a separating means for separating the electron beam into horizontal sections and irradiating the screen with the horizontal section, On the screen of the screen, a horizontal deflection electrode for horizontally deflecting the electron beam in a plurality of steps until reaching the screen and an amount of irradiation of the screen with the electron beam separated for each horizontal section are controlled. And a beam flow control electrode for controlling the light emission amount of each picture element of the above, and a lenticule that intersects with the front surface of the screen in the vertical direction in the longitudinal direction at regular intervals. A stereoscopic image display device in which a horizontal lens is arranged, and the left and right video signals are switched and displayed corresponding to the lenticular lens, and the left and right signals are switched at a fixed vertical dimension. 3. The stereoscopic image display device according to claim 1, wherein the lenticular lens is a lenticular lens integrally formed by processing a screen side surface of a glass container which is a vacuum container. .