JP2001154607A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a conventional image display device is inferior in the display performance of a low gradation image and is difficult to obtain an image of high picture quality because of the incomplete light- shielding performance of the liquid crystal panel. SOLUTION: The device is equipped with light-emitting means for red light, green light and blue light each consisting of a line of a plurality of light-emitting elements of the respective colors, which modulate the intensity of light by the electric video signals according to the information of the image to be displayed, and with a compositing means of color light in the succeeding step of the light- emitting means to composit color by superimposing the each color light on the screen, and with a ray scanning means to scan the screen with the composited color light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus for displaying an image by projecting light modulated and emitted from a light source onto a screen (International Patent Classification G09F).
9/00).

[0002]

2. Description of the Related Art In recent years, with the development of video equipment such as video tape recorders and video disk players and video software, there has been an increasing demand for large-screen video display devices for enjoying powerful images. As a conventional large-screen image display device, there is an image display device that uses a liquid crystal panel for an image display unit, spatially modulates light emitted from a light source with the liquid crystal panel, and projects an image on a screen or the like.

FIG. 7 is a configuration diagram showing an example of a conventional video display device using a liquid crystal panel for a video display unit.

In FIG. 1, light emitted from a lamp 701 as a light source and light reflected by a reflecting concave mirror 702 are condensed by a condensing lens 703, and then red by dichroic mirrors 704 and 705 for color separation. Decomposed into green and blue primary light. Each primary color light is guided to a red liquid crystal panel 712, a green liquid crystal panel 713, and a blue liquid crystal panel 714, combined by a color combining prism 715, and then projected on a screen 717 by a projection lens 716. Also, total reflection mirrors 706, 707, 70
Numeral 8 is for changing the optical path of the light beam, and field lenses 709, 710, 711 are for adjusting the angle of the light beam entering each liquid crystal panel. As a lamp as a light source, a white light source such as a discharge-type ultrahigh-pressure mercury lamp, a metal halide lamp, or a thermoluminescent halogen lamp is used.

The liquid crystal panel for red 712, the liquid crystal panel for green 713, and the liquid crystal panel for blue 714 are driven by a red video signal, a green video signal, and a blue video signal, respectively. When passing through the liquid crystal panel, it is spatially modulated and
6 projected on a screen 717 as an image.

[0006]

As described above, in the conventional video display device as described above, the liquid crystal panel is driven by the video signal and the light transmittance by the liquid crystal panel is changed to spatially control the light. However, since the light blocking performance of the liquid crystal panel is not perfect, it is difficult to obtain a high-contrast, high-quality image with poor display performance of a low-gradation image. .

Further, in the above-mentioned conventional image display apparatus, a lamp such as an ultra-high pressure mercury lamp or a metal halide lamp is used as a light source. Since the life is short, there is a problem that it has to be replaced in thousands of hours.

Further, most of the lamps currently used have a low light utilization efficiency, which is a ratio of emitted light to input power, so that a bright lamp with large power consumption must be used in order to obtain a bright projected image. In addition, there is a problem that heat generated from the lamp increases.

[0009]

In order to solve the above-mentioned problems, a video display device according to the first invention of the present application automatically changes to red, green, and blue by an electric video signal corresponding to information of a video to be displayed. A red light emitting unit, a green light emitting unit, a blue light emitting unit, and a red, green, and blue light emitting unit, each of which includes a plurality of light emitting elements that modulate the intensity of emitted light arranged in a line for each color, A color light combining means for combining colors so that each color light is superimposed on a screen; and a light beam scanning means for scanning the combined color light, wherein a horizontal direction or a vertical direction of an image based on the input electric image signal is provided. By simultaneously performing the display of a plurality of pixels in the above, the color light is synthesized on the screen, and by scanning the color light synthesized by the light beam scanning means in a direction orthogonal to the color light direction aligned in a line, Is obtained by the display means displays an image on a serial screen.

[0010] Further, the video display device of the second invention of the present application comprises:
A red light emitting means and a green light emitting means in which a plurality of light emitting elements for modulating the intensity of light that self-luminesces in red, green, and blue, respectively, by an electric image signal corresponding to information of an image to be displayed are arranged in a row for each color. And blue light emitting means, and the red, green,
A color light dividing unit that divides each color light into two at a stage subsequent to the blue light emitting unit, a color light combining unit that combines colors such that the color lights are superimposed on a screen at a stage subsequent to the color light dividing unit, Light beam scanning means for scanning the synthesized color light; displaying a plurality of pixels in a horizontal direction or a vertical direction of an image based on the input electric image signal at the same time; An image is displayed on the screen by scanning the color light synthesized by the light beam scanning means in a direction orthogonal to the direction of the color light that is light-synthesized and arranged in a line.

[0011] The image display device according to the third aspect of the present invention includes:
A red light emitting means and a green light emitting means in which a plurality of light emitting elements for modulating the intensity of light that self-luminesces in red, green, and blue, respectively, by an electric image signal corresponding to information of an image to be displayed are arranged in a row for each color. And blue light emitting means, and the red, green,
A color light splitting unit that splits each color light into two at the subsequent stage of the light emitting unit for each color of blue, an oblique light unit that obliquely emits unnecessary light after the color light dividing unit, and each color light on the screen after the oblique light unit. Color light combining means for combining colors so as to be superimposed, and light beam scanning means for scanning the combined color light, and a plurality of pixels in a horizontal direction or a vertical direction of an image based on the input electric image signal are provided. The display is performed simultaneously, and the color light combined by the light beam scanning unit is scanned on the screen by scanning the color light on the screen in the direction orthogonal to the direction of the color light which is divided into two and color light is arranged in a line. It is characterized by displaying an image.

According to the present invention, the intensity of light in a low gradation region is sufficiently reduced by using a self-luminous element which emits light by itself as a modulating means for converting an electric image signal into a change in intensity of light. Therefore, it is possible to improve the display performance in a low gradation region, provide a high-contrast and good display quality, and provide a video display device in which a light source has a long life and low power consumption.

Further, by using the color light combining means,
There is no color shift, and by using the color light splitting means and the oblique light means, it is possible to fill unnecessary gaps between the self-light emitting elements which are projected as black on the screen and have a rough feeling, and block unnecessary light which lowers the contrast. As a result, it is possible to smooth the image on the screen and improve the contrast.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An image display apparatus according to the present invention comprises a light emitting element for modulating the intensity of self-luminous light in red, green and blue by an electric image signal corresponding to information of an image to be displayed for each color. A plurality of light emitting means for red, light emitting means for green, light emitting means for blue and light emitting means for blue, which are arranged in a line, are combined with each other so that each color light is superimposed on the screen at a stage subsequent to the light emitting means for each of red, green and blue. Color light synthesizing means, and a light beam scanning means for scanning the synthesized color light, and simultaneously displays a plurality of pixels in a horizontal or vertical direction of an image based on the input electric image signal, and displays the image on a screen. The image is displayed on the screen by scanning the color light synthesized by the light beam scanning unit in a direction orthogonal to the direction of the color light synthesized and arranged in a line. Ones, and the to use a self-luminous element and color light combining means itself emits light to the modulating means for converting the electrical image signals to the intensity change of light, no color shift,
Since the light intensity in the low gradation region can be sufficiently reduced, the display performance in the low gradation region can be improved, the display quality can be improved with high contrast, and the light source can be improved. However, it has an effect that the power consumption can be reduced with a long life.

Further, the video display device of the present invention uses the electrical video signal corresponding to the information of the video to be displayed to output red and red, respectively.
Green light emitting means for red, green light emitting means, and blue light emitting means in which a plurality of light emitting elements that modulate the intensity of light that self-luminesces green and blue are arranged in a row for each color, and for each of the red, green, and blue colors. A color light dividing unit that divides each color light into two at a stage subsequent to the light emitting unit; a color light combining unit that combines colors such that the color lights are superimposed on a screen at a stage subsequent to the color light dividing unit; and the combined color light. Light beam scanning means for scanning a plurality of pixels in a horizontal direction or a vertical direction of an image by the input electric image signal at the same time, the two divided on a screen, and color light synthesis is performed, and An image is displayed on the screen by scanning the color light combined by the light beam scanning means in a direction orthogonal to the direction of the color light arranged in a line, and the electric image is displayed. By using a self-luminous element that emits light by itself and a color synthesizing unit as a modulating unit that converts a signal into a change in light intensity, there is no color shift and the light intensity in the low gradation region can be sufficiently reduced. Therefore, the display performance in the low gradation region can be improved, the display quality can be improved with high contrast, and the light source has a long life and the power consumption can be reduced. .

Further, by using the color light dividing means,
It is possible to fill gaps between the self-luminous elements which are projected as black on the screen and give a rough feeling, and as a result, it has an effect that an image on the screen can be smoothed.

A light emitting device for red, comprising a plurality of light emitting elements for modulating the intensity of light that emits light in red, green, and blue, respectively, in accordance with an electric image signal corresponding to information of an image to be displayed, is arranged in a row for each color. Light emitting means for blue and light emitting means for blue,
A color light splitting unit that splits each color light into two at the subsequent stage of the red, green, and blue light emitting units, an oblique light unit that obliquely emits unnecessary light after the color light splitting unit, and a screen that is arranged after the oblique light unit. Color light combining means for combining colors such that the respective color lights are superimposed on each other, and light beam scanning means for scanning the combined color lights, wherein a horizontal or vertical direction of an image based on the input electric image signal is provided. By simultaneously displaying a plurality of pixels, and scanning the color light synthesized by the light beam scanning means in a direction orthogonal to the direction of the color light, which is divided into two and color light is arranged in a line, on a screen. A self-luminous element that emits light by itself and a color light synthesizing means for modulating means for converting an electric image signal into a change in intensity of light, characterized in that an image is displayed on the screen. As a result, there is no color shift and the light intensity in the low gradation region can be sufficiently reduced, so that the display performance in the low gradation region can be improved, and high display quality with high contrast can be obtained. In addition, the light source has a long life and the power consumption can be reduced.

Further, by using the color light dividing means and the oblique light means, it is possible to fill unnecessary gaps between the self-light emitting elements which are projected as black on the screen and give a rough feeling, and block unnecessary light which lowers the contrast. The effect is to smooth the image on the screen as a result,
This has the effect that the contrast can be improved.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

(Embodiment 1) FIG. 1 is a conceptual diagram showing a configuration of an image display device according to an embodiment of the first invention.
In the figure, reference numeral 11 denotes a color light combining unit including red, blue, and green light emitting diodes serving as light emitting means, and a combining prism and a condensing lens serving as means for combining color light from the light emitting diodes. A projection lens for projecting an image formed by the condenser lens of FIG.
Reference numeral 14 denotes a screen for scanning while reflecting light rays from the scanning mirror. Hereinafter, the light emitting diode is referred to as an LED.

FIG. 2 is an enlarged view of the color light combining section 11 of the video display device in FIG. FIG. 5A shows the dichroic mirrors 23 and 24 and the total reflection mirror 2 in the color light combining section.
5 (b) and (c) show the case where dichroic prisms 26 and 27 are used in the color light combining section.

Reference numeral 22R denotes a red light emitting diode array in which a plurality of red light emitting diodes serving as red light emitting means are arranged in one direction, and 22G denotes a green light emitting diode array in which a plurality of green light emitting diodes serving as green light emitting means are arranged in one direction. , 22B is a blue light emitting diode array in which a plurality of blue light emitting diodes as blue light emitting means are arranged in one direction, and 21 is a light condensing device for condensing the color light emitted from each of 22R, 22G, 22B to form an image. The lens 23
A dichroic mirror for transmitting blue reflection green and red, 24 is a dichroic mirror for transmitting red reflection green and blue, 25 is a total reflection mirror 26 is a cube type dichroic prism combining four triangular prisms, and 27 is a combination of three triangular prisms Mirror dichroic prism.

The operation of the video display device according to one embodiment of the first invention will be described below with reference to FIGS.

The LED of each color is driven by an image signal circuit (not shown) so as to change the light emission intensity, and a red light emitting LED array 22R, a green light emitting LED array 22G,
The light beam emitted from the blue light emitting LED array 22B is a dichroic mirror 23 for transmitting blue reflection green and red, a dichroic mirror 24 for transmitting red reflection green and blue, and a total reflection mirror 25.
The color combining means is composed of
And is once formed into an image.

However, it is assumed that a plurality of LED arrays of each color are arranged in the depth direction on the drawing, and the same color composition is performed in the configuration using the color composition means of the dichroic prism 26 and the dichroic prism 27. The light is condensed by the condenser lens 21 and is once formed into an image.

Light rays of the image formed by the condenser lens 21 are projected on a screen 14 via a projection lens 12 by a scanning reflector 13 for reflection and scanning.

As described above, the scanning reflection mirror 13 causes the red light emitting LED array 22R and the green light emitting LED array 22R.
G, by scanning the color light emitted from the blue light emitting LED array 22B and synthesized by, for example, a dichroic prism 26 as a color synthesizing means,
Since the projection images displayed in a line above are displayed in a plane, they can be displayed as images.

Here, the scanning reflecting mirror 13 can be easily constituted by a movable reflecting mirror such as a galvano mirror or a polygon mirror.

The means for changing the optical path of the light beam is not limited to the use of a reflecting mirror, but a prism or the like may be used. The prism of the color synthesizing means is composed of a Philips prism or Kester prism. Clearly what you can do.

As described above, in the image display apparatus of the present embodiment, red, blue, and green LEDs are used as light sources, and color synthesizing means including a dichroic mirror and a total reflection mirror or color synthesizing means including a dichroic prism are used. The display is configured to display images in a low gradation area without color shift, and the light intensity in the low gradation area can be sufficiently weakened, so that the display performance in the low gradation area can be improved. ,
The display quality can be made good with high contrast. In addition, the use of the LED as the light source can extend the life. Further, since the power consumption can be reduced as compared with the conventionally used lamp, a great effect that the power consumption of the video display device can be reduced can be obtained.

In this embodiment, a case where a light emitting diode is used as the light emitting means has been described. However, an electroluminescent element or a semiconductor laser element may be used instead of the light emitting diode.

(Embodiment 2) FIG. 3 is a sectional view of a color light combining section of an image display device according to an embodiment of the second invention, and FIG. 4 is an image according to an embodiment of the second invention. FIG. 3 is an enlarged view of a color light combining unit 11 of the display device. The same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and detailed description thereof will be omitted.

31 is a red light emitting diode array 22
R, a beam splitter array for splitting the color light emitted from one light emitting diode of each of the green light emitting diode array 22G and the blue light emitting diode array into two, 32
A half-wave plate 33 for rotating the vibrating direction of the color light emitted as P-polarized light out of the color light split by the beam splitter array 31 so as to become S-polarized light;
Denotes a color light splitting unit, and a color light splitting unit in which the half-wave plate is attached to the beam splitter array 31. Reference numeral 21 denotes a red LED array 22R, a green LED array 22G,
It is a condenser lens for condensing the color light emitted from the blue LED array 22B to form an image.

The operation of the video display device according to one embodiment of the second invention will be described below with reference to FIGS. 1, 3 and 4.

The LED of each color is driven by an image signal circuit (not shown) so as to change the light emission intensity.
ED array 22R, green LED array 22G, blue LE
The light beam emitted from the D array 22B is
Are divided into P-polarized light and S-polarized light by the beam splitter array 31, and the vibration direction of the P-polarized light is converted to S-polarized light by the half-wave plate 32. It is emitted as polarized light. However, the cross section in FIG. 3 is a red light emitting diode array 22R and a color combining means 26.

The emitted light rays are color-combined by the color-combining means 26, condensed by the condenser lens 21, and once formed into an image.

However, even in the configuration using the color synthesizing means of the dichroic prism 27, the colors are similarly synthesized, condensed by the condensing lens 21, and once formed into an image.

The light beam of the image formed by the condenser lens 21 passes through the projection lens 12 and is reflected by the scanning mirror 13 for scanning as described in the first invention with reference to FIG. Is projected on the screen 14.

As described above, the red LED array 22R, the green LED array 22G, and the blue L
By scanning the color light, which is emitted from the ED array 22B and is divided by the color light dividing unit 33 into two, by the dichroic prism 26, the projected images displayed in a line on the screen 14 are displayed in a plane. Therefore, it can be displayed as an image.

Here, the scanning reflecting mirror 13 can be easily constituted by a movable reflecting mirror such as a galvano mirror or a polygon mirror.

The means for changing the optical path of the light beam is not limited to the use of a reflecting mirror, but a prism or the like may be used. The prism of the color synthesizing means may be constituted by a Philips type prism or Kester type prism. Is clear.

As described above, the image display apparatus of this embodiment uses red, blue, and green LEDs as light sources, and is composed of color light splitting means, color synthesizing means comprising a dichroic mirror and a total reflection mirror, or dichroic prisms. Since it is configured to display video using color synthesis means,
Projected as black on the screen, it can fill the gap between the self-luminous elements that gives a rough feeling, there is no color shift,
Further, since the light intensity in the low gradation region can be sufficiently reduced, the display performance in the low gradation region can be improved, and the display quality can be improved with high contrast. In addition, the life can be extended by using an LED as the light source. Furthermore, since the power consumption can be reduced as compared with the conventionally used lamp, a great effect that the power consumption of the video display device can be reduced can be obtained.

In this embodiment, the case where a light emitting diode is used as the light emitting means has been described. However, an electroluminescent element or a semiconductor laser element may be used instead of the light emitting diode.

(Embodiment 3) FIG. 5 is a sectional view of a color light combining section 11 of an image display device according to an embodiment of the third invention, and FIG. 6 is an image display according to an embodiment of the third invention. FIG. 2 is an enlarged view of a color light combining unit 11 of the device. The same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and detailed description thereof will be omitted.

Reference numeral 51 denotes an oblique light means, which is an aperture for obliquely scattering light from a bonding edge or the like of the beam splitter array 31. Hereinafter, an embodiment according to the third embodiment of the present invention will be described with reference to FIGS. The operation of the video display device will be described.

The LED of each color is driven by an image signal circuit (not shown) so as to change the light emission intensity.
ED array 22R, green LED array 22G, blue LE
The light beam emitted from the D array 22B is
Are divided into P-polarized light and S-polarized light by the beam splitter array 31, and the vibration direction of the P-polarized light is converted to S-polarized light by the half-wave plate 32. It is emitted as polarized light. At this time, the scattered light from the edge of the bonded portion of the beam splitter array 31 is obliquely emitted by the aperture 51. However, the cross section in FIG. 5 is a red light emitting diode array 22R and a color combining means 26.

The emitted light rays are color-combined by the color-combining means 26, condensed by the condenser lens 21, and once formed into an image.

However, even in the configuration using the color synthesizing means of the dichroic prism 27, the colors are similarly synthesized, condensed by the condensing lens 21, and once formed into an image.

The light beam of the image formed by the condenser lens 21 is transmitted through the projection lens 12 in the same manner as described in the first embodiment with reference to FIG. Is projected on the screen 14.

As described above, the scanning reflector 13 causes the red LED array 22R, the green LED array 22G, and the blue L
The color light emitted from the ED array 22B and divided into two by the color light dividing unit 33 is scanned by the color light synthesized by the dichroic prism 26, thereby scanning the screen 14
Since the projection images displayed in a line above are displayed in a plane, they can be displayed as images.

Here, the scanning reflecting mirror 13 can be easily constituted by a movable reflecting mirror such as a galvano mirror or a polygon mirror.

The means for changing the optical path of the light beam is not limited to the use of a reflecting mirror, but a prism or the like may be used. The prism of the color synthesizing means may be constituted by a Philips prism or Kester prism. Is clear.

As described above, in the image display apparatus of this embodiment, the red, blue and green LEDs are used as the light sources, and the color synthesis is made up of the color light dividing means, the oblique light means for obliquely scattering light, the dichroic mirror and the total reflection mirror. Means, or the image is displayed using a color synthesizing means consisting of a dichroic prism, so that ghost light on the screen or flare light that lowers the contrast is blocked,
In addition, the gaps between the self-luminous elements, which are projected as black on the screen and become rough, can be filled, there is no color shift, and the light intensity in the low gradation region can be sufficiently weakened. The display performance in the gradation region can be improved, and the display quality can be improved with high contrast. In addition, the life can be extended by using a light emitting diode as a light source. Furthermore, since the power consumption can be reduced as compared with the conventionally used lamp, a great effect that the power consumption of the video display device can be reduced can be obtained.

In this embodiment, the case where the light emitting diode is used as the light emitting means has been described. However, an electroluminescent element or a semiconductor laser element may be used instead of the light emitting diode.

[0055]

As described above, according to the video display apparatus of the first invention of the present application, the red, blue and green LEDs are used as the light source, and the color synthesizing means comprising the dichroic mirror and the total reflection mirror, or the dichroic prism Since the image is displayed using the color synthesizing means composed of the following, there is no color shift, and the intensity of light in the low gradation area can be sufficiently reduced. Performance can be improved, and display quality can be improved with high contrast. In addition, the use of the LED as the light source can extend the life. Further, since the power consumption can be reduced as compared with the conventionally used lamp, a great effect that the power consumption of the video display device can be reduced can be obtained.

Further, according to the image display device of the second aspect of the present invention, red, blue, and green LEDs are used as light sources, and color combining means including a color light dividing means, a dichroic mirror, and a total reflection mirror, or a dichroic prism. Since the image is configured to be displayed by using a color synthesizing means consisting of, it is projected as black on the screen, and it is possible to fill the gap between the self-luminous elements which has a rough feeling, there is no color shift, and Since the intensity of light in the low gradation region can be sufficiently reduced, display performance in the low gradation region can be improved, and display quality can be improved with high contrast. In addition, the use of the LED as the light source can extend the life. Furthermore, since the power consumption can be reduced as compared with the conventionally used lamp, a great effect that the power consumption of the video display device can be reduced can be obtained.

Further, according to the image display apparatus of the third aspect of the present invention, the light source uses red, blue, and green LEDs, and is composed of color light dividing means, oblique light means for obliquely scattering scattered light, a dichroic mirror, and a total reflection mirror. Since the image is displayed using the color synthesizing means or the color synthesizing means including the dichroic prism, the ghost light or the flare light which lowers the contrast is blocked on the screen, and is projected as black on the screen. The gap between the self-luminous elements, which gives a rough feeling, can be filled, there is no color shift, and the light intensity in the low gradation area can be sufficiently reduced, thus improving the display performance in the low gradation area. The display quality can be improved and the display quality can be improved. In addition, the life can be extended by using a light emitting diode as a light source. Furthermore, since the power consumption can be reduced as compared with the conventionally used lamp, a great effect that the power consumption of the video display device can be reduced can be obtained.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of a video display device according to an embodiment of the first invention.

FIG. 2 is an enlarged view of a color light combining unit of the video display device in FIG.

FIG. 3 is a cross-sectional configuration diagram of a color light combining unit included in the image display device according to one embodiment of the second invention.

FIG. 4 is an enlarged view of a color light combining unit included in the image display device according to one embodiment of the second invention.

FIG. 5 is a cross-sectional configuration diagram of a color light combining unit included in the image display device according to one embodiment of the third invention.

FIG. 6 is an enlarged view of a combining unit of a color light combining unit included in the video display device according to one embodiment of the third invention.

FIG. 7 is a configuration diagram showing a configuration of an example of a liquid crystal display device which is a conventional video display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 color light synthesizing unit 12 projection lens 13 scanning reflector 14 screen 21 condensing lens 22R red light emitting LED 22G green light emitting LED 22B blue light emitting LED 26 die quick prism 33 color light splitting unit 51 aperture

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 9/31 H04N 9/31 C (72) Inventor Hitoshi Noda 1006 Ojidoma, Kadoma City, Osaka Matsushita Electric Industrial Inside (72) Inventor Junji Masumoto 1006 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Reference) 2H045 AA01 BA13 BA22 BA24 BA32 5C060 BA02 BA08 BB11 BC05 BD03 BD06 BE04 BE09 GB06 HC11 HC20 HC21 HC22 HC25 HD07 JA17 JB06 5G435 AA02 BB12 BB17 CC12 DD05 EE26 GG04 GG08

Claims (8)

[Claims] 1. A red light-emitting means in which a plurality of light-emitting elements for modulating the intensity of self-luminous light in red, green, and blue, respectively, by an electric image signal corresponding to information of an image to be displayed are arranged in a line for each color. And a light emitting means for green, a light emitting means for blue, a color light combining means for combining colors such that respective color lights are superimposed on a screen at a stage subsequent to the light emitting means for each color of red, green, and blue, and Light beam scanning means for scanning color light, simultaneously displaying a plurality of pixels in a horizontal or vertical direction of an image based on the input electric image signal, the color light is synthesized on a screen, and arranged in a line An image display device, wherein an image is displayed on the screen by scanning the color light combined by the light beam scanning unit in a direction orthogonal to the direction of the color light. 2. The image display device according to claim 1, wherein said color light combining means comprises a combining optical system comprising a dichroic mirror and a total reflection mirror. 3. The image display device according to claim 1, wherein said color light combining means comprises a combining optical system comprising a dichroic prism. 4. A red light-emitting means in which a plurality of light-emitting elements for modulating the intensity of self-luminous light in red, green, and blue, respectively, by an electric image signal corresponding to information of an image to be displayed are arranged in a line for each color. A light emitting means for green, a light emitting means for blue, a color light dividing means for dividing each color light into two at a stage subsequent to the light emitting means for each color of red, green and blue, and respective colors on a screen after the color light dividing means. Color light combining means for combining colors so that light is superimposed, and light beam scanning means for scanning the combined color light, and a plurality of horizontal or vertical images of the image based on the input electric image signal are provided. By simultaneously displaying the pixels, by scanning the color light combined by the light beam scanning unit in a direction orthogonal to the direction of the color light, which is divided into two, and color light is arranged on a screen, and arranged in a line, An image display device for displaying an image on the screen. 5. A color light dividing optical system comprising a beam splitter array or a color light comprising a half mirror and a total reflection mirror, wherein the color light dividing means for dividing each color light into two so that the color light is arranged between the light emitting elements of each color. The image display device according to claim 4, wherein the image display device is a split optical system. 6. A red light emitting means in which a plurality of light emitting elements for modulating the intensity of self-luminous light in red, green, and blue, respectively, by an electric video signal corresponding to information of a video to be displayed are arranged in a line for each color. A light emitting means for green, a light emitting means for blue, a color light dividing means for dividing each color light into two at a stage subsequent to the light emitting means for each of red, green and blue, and an oblique light at a stage subsequent to the color light dividing means. Oblique light means, a color light synthesizing means for synthesizing colors such that respective color lights are superimposed on a screen at a stage subsequent to the oblique light means, and a light beam scanning means for scanning the synthesized color light. Display of a plurality of pixels in the horizontal direction or the vertical direction of the video by the dynamic video signal at the same time
An image display device, wherein an image is displayed on the screen by scanning the color light synthesized by the light beam scanning means in a direction orthogonal to the direction of the color light synthesized and arranged in a line. 7. An image forming apparatus comprising: an image forming unit configured to form an image of light emitted by the red light emitting unit, the green light emitting unit, and the blue light emitting unit on a screen.
7. The image display device according to 4 or 6. 8. The light emitting device for red light, the light emitting device for green light, and the light emitting device for blue light are respectively a light emitting diode element, an electroluminescent element or a semiconductor laser element. Or the video display device according to 6.