JPH05219464A - Display device - Google Patents

Abstract

PURPOSE:To obtain the display device not causing any defect of a display picture even with a rocking reflecting mirror of a simple structure with a long returning round time. CONSTITUTION:A returning around operating time of a rocking reflection mirror Mg making round turning operation corresponding to a vertical scanning period of an original picture signal being a display object is set longer than a vertical blanking period of the original picture signal being a display object. Optical information sets arranged in a line in a predetermined specific direction are generated with a picture signal resulting from time axis compression of the original picture signal so that a part of the picture signal for a period except the vertical blanking period within a forward operating time of the rocking reflection mirror Mg reduced attended with the increase in the returning operating time of the rocking reflecting mirror Mg and the optical information is given to the rocking reflecting mirror Mg for the forward operating time. The optical information in the opposite direction is generated and given to the rocking reflecting mirror Mg for the returning operating period. Three-primary color signals of face sequencing may be used for the signals to obtain the optical information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device.

[0002]

2. Description of the Related Art A light beam whose intensity is modulated by a time-series information signal is projected onto a screen by a projection optical system,
A display device capable of displaying a two-dimensional image has been conventionally known. Further, in the above-mentioned conventional technique, a high-luminance and high-resolution optical 2 is used by using a time-series signal.
Even if it is required to form a two-dimensional image, for example, a high-definition two-dimensional image in which 4000 pixels are arranged vertically and horizontally, in a state close to real time, a signal conversion element that can realize that Therefore, in order to solve the problem that such a requirement could not be satisfied, the applicant of the present invention previously radiated from a light source as disclosed in Japanese Patent Laid-Open No. 3-196121. The light beam having a linear cross-section is made incident on the light modulator having a structure capable of displacing a large number of reflecting members provided for each pixel according to pixel information, and is made incident on the light modulator at the light modulator. A light beam with a linear cross section is emitted as a light beam with a linear cross section whose intensity is modulated for each pixel in the linear direction, and the light beam emitted from the above-mentioned light modulator is converted into a light beam by a rotating mirror car. The by deflected by incident on the projection lens in the horizontal direction at a predetermined cycle, it was proposed a display device which is adapted to Utsude a two-dimensional image by projecting the screen onto the screen by the projection lens.

However, in the above-mentioned proposed device, there is a problem that the intensity modulation operation of the light by the pixel information performed in the light modulator of the device is slow, and a solution thereof has been sought. Information on pixels corresponding to the respective light emitting elements is supplied to the N light emitting elements in the light emitting element array in which the N light emitting elements corresponding to the N pixels are linearly arranged. Then, the N light emitting elements in the light emitting element array are simultaneously made to emit light for the period, and the light emitting elements are arranged in the direction orthogonal to the alignment direction of the light emitted from the light emitting elements of the light emitting element array. The emitted light is deflected at the same time, and the deflected light includes at least a photoconductive layer member and a light modulation material layer member between two electrodes. Figure is imaged on the photoconductive layer, and the image information read from the optical over beam converter giving a readout light to the optical over light conversion element so as to out movies on the screen in 8
Proposed a display device as exemplified in.

In FIG. 8, REA corresponds to N (where N is a natural number of 2 or more) pixels and N (where N is 2).
The writing light emitted from the N light emitting elements in the light emitting element array REA is the light emitting element array in which the light emitting elements of the above natural numbers are linearly arranged. The light emission intensity according to the information of N pixels on one straight line can simultaneously emit light for a predetermined period. That is, when the image information to be displayed is supplied from the signal source of the image information to the display device as a time-series image signal, for example, it is output from the signal source of the image information. The N pixel information in the generated time-series image signal is converted into a simultaneous signal by a serial / parallel conversion circuit (for example, a shift register) and supplied to the light emitting element array REA. The N light fluxes emitted from the N light emitting elements in the light emitting diode array REA while being intensity-modulated by the N pixel information are incident on the optical deflecting device by the swing reflecting mirror Mg via the lens L. To do. Since the oscillating reflector Mg is oscillated in the direction of the arrow in the figure at a predetermined cycle, the light flux incident on the oscillating reflector Mg moves at a constant moving speed from the top to the bottom of the light-light conversion element SLM. The light-to-light conversion element SL is repeated by repeating the operation in the movement mode
The light is projected onto the M, and the light is imaged as writing light on the photoconductive layer member of the light-light conversion element (spatial light modulation element) SLM, and is displayed on the light-light conversion element SLM. Image information is written.

The above-described light emitting element array REA is intensity-modulated by N pixel information on one straight line in an image to be displayed by N light emitting elements linearly arranged. The luminous flux is radiated for a predetermined period, but after the lapse of the predetermined constant period described above, another N lines on another straight line in the image to be displayed are displayed. A light flux whose intensity is modulated by pixel information is radiated over a predetermined period, and thus the intensity is modulated by N pieces of image information on different straight lines in an image to be displayed. Of the light are emitted one after another for a predetermined fixed time, whereby the light-to-light conversion element S
Bright writing light will be provided on the LM. The light-to-light conversion element SLM used in the display device shown in FIG. 8 includes, for example, as shown in FIG. 9, a transparent substrate BP1, a transparent electrode Et1, a photoconductive layer member PCL, and a dielectric. Even if it is a so-called reflection type light-to-light conversion element which is configured by laminating the body mirror DML, the light modulation material layer member PML, the transparent electrode Et2 and the transparent substrate BP2, or a transmission type not shown. The light-to-light conversion element may be used.

The structure and operation of the light-light conversion element SLM described above will be described below with reference to FIG. The transparent electrode E described above in the light-light conversion element SLM
Each of t1 and Et2 is composed of a thin film of a transparent conductive material, and the photoconductive layer member PCL is composed of a material exhibiting photoconductivity in the wavelength range of light used. Further, as the dielectric mirror DML, a well-known type configured as a multilayer film so as to be able to reflect light in a predetermined wavelength band can be used, and further, as the light modulation material layer member PML, it is applied. An optical modulator that changes the state of light according to the electric field strength, for example, a crystal having an electro-optic effect, a liquid crystal exhibiting birefringence characteristics, and other optical modulator material layer members are used. Further, in FIG. 9, E is a transparent electrode E
It is a power supply for applying a predetermined voltage between t1 and Et2.

WL in FIG. 9 is writing light which is incident from the substrate BP1 side in the light-to-light conversion element SLM and is condensed on the photoconductive layer member PCL, and this writing light WL is targeted for display. The intensity is modulated by the existing information.
Therefore, in the display device shown in FIG. 8, from the transparent substrate BP1 side in the light-to-light conversion element SLM in which a predetermined voltage is supplied from the power source E between the transparent electrodes Et1 and Et2,
When the N writing light fluxes whose intensity is modulated by the image information reflected by the oscillating reflecting mirror Mg are focused on the photoconductive layer member PCL by the lens L, the portions where the N writing light fluxes are focused are collected. The electric resistance value of the photoconductive layer member PCL of the photoconductive layer member PCL changes according to the amount of light irradiated.
At the boundary between L and the dielectric mirror DML, a charge image corresponding to the irradiation light quantity of the N writing lights whose intensity is modulated by the image information to be displayed is formed favorably, and Thus, the photoconductive layer member PCL and the dielectric mirror D are provided in the light modulation material layer member PML of the light-light conversion element SLM.
An electric field is applied by N charge images formed at the boundary with ML.

Reference numeral LS in FIG. 8 is a light source for read light, and the read light RL emitted from the light source LS for read light described above.
Is incident on the polarization beam splitter PBS, the S-polarized light component of the read light RL is reflected by the polarization beam splitter PBS toward the read side of the light-light conversion element SLM, and the read side of the light-light conversion element SLM. Is incident from the transparent substrate BP2. As described above, the light-light conversion element SL
The read light RL incident from the transparent substrate BP2 side of M is shown in FIG.
As already described with reference to, the reflected light of the read light which reaches the dielectric mirror DML by the path of the transparent substrate BP2 → the transparent electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML, The light is emitted from the light-to-light conversion element SLM along the route of the dielectric mirror DML → light modulation material layer member PML → transparent electrode Et2 → transparent substrate BP2 →.

As described above, the light fluxes of the N pieces of readout light emitted simultaneously from the light-to-light conversion element SLM are in a state in which the electric charges of the electric charges corresponding to the N pieces of sequential pixel information are arranged. Since the light flux is a light flux that travels back and forth through the light modulation material layer member PML to which an electric field based on a charge image is applied, the light flux changes the state of the polarization plane corresponding to the information of N sequential pixels linearly arranged. It is what you are doing. And
The N pieces of readout light emitted from the light-to-light conversion element SLM at the same time enter the polarization beam splitter PBS, and the P-polarized light component of the incident light is given from the polarization beam splitter PBS to the projection lens Lp at the same time. The projection lens Lp simultaneously projects it as N light spots linearly arranged on the screen S.

[0010]

Now, as in the display device described with reference to FIG. 8, optical information linearly arranged in a predetermined direction is converted by the optical deflecting device using the swing reflecting mirror Mg. When the light is deflected in the direction orthogonal to the direction in which the optical information is arranged, the oscillating reflecting mirror Mg is moved forward in the image signal period (video signal period) of the image signal being displayed. A normal display image cannot be displayed on the screen S unless the movement is performed and the backward rotation movement is performed during the vertical blanking period. That is, the oscillating reflector Mg performs forward rotation during the image signal period (video signal period) of the image signal to be displayed, and reverse rotation during the vertical blanking period. It is necessary to perform the individual operations, but if the image signal to be displayed now is, for example, as shown in FIG. Mg is the image signal period in the image signal targeted for display as described above.
Corresponding to (video signal period) and vertical blanking period, FIG.
It is required to perform the reciprocating rotation operation as shown in (b) of FIG.

By the way, the oscillating reflecting mirror Mg is a member which itself has a mechanical impedance consisting of mass, stiffness, mechanical resistance, etc., and oscillates to drive the oscillating reflecting mirror Mg. Since it forms a part of a mechanical vibration system composed of a mass of the rocking drive unit 3 connected to the reflecting mirror Mg, a component having mechanical impedance due to stiffness, mechanical resistance, etc., The drive displacement mode follows the drive displacement characteristics of the mechanical vibration system described above. However, a mechanical vibration system including an oscillating reflecting mirror Mg generally has a large mechanical impedance in a high frequency range. Therefore, since only a small speed is generated with respect to the driving force supplied during the backward rotation operation performed during the short vertical blanking period, for example, FIG. Corresponding to the vertical blanking period in the image signal to be displayed as shown in (a), the oscillating reflector Mg is moved back and forth as shown in (b) of FIG. Since it is difficult to perform the rotational movement, the reciprocating rotational movement time of the oscillating reflecting mirror Mg is the vertical feedback in the image signal to be displayed as shown in FIG. It may be longer than the line erase period, and as a result, part of the image signal may not be displayed. To solve the above-mentioned problem, for example, as a mechanical vibration system including an oscillating mirror Mg, the same backward rotation as the vertical blanking period in the image signal to be displayed is used. It may be possible to use the one having a construction capable of obtaining the production time, but such a high performance one is expensive and cannot be adopted as a constituent part of the display device.

When a color image is displayed using image signals of three primary colors in a frame sequential manner, one complete color image is displayed by superimposing images of the three primary colors. In this case, In order to display a flicker-free color image, the number of fields per second is naturally large, so that a swinging mirror Mg having a short swinging period is also required. A high-performance one that can obtain the same backward rotation and operation time as the vertical blanking period in the image signal to be displayed by the reflecting mirror is expensive and cannot be used as a component of the display device. Further, when the displacement of the oscillating reflecting mirror during the oscillating operation is non-linear, shading may occur in the displayed image. However, the displacement of the oscillating reflecting mirror on the time axis is a problem. The problem of non-linearity becomes particularly serious when a resonance type oscillating reflector is used as the oscillating reflector, but it also becomes a problem in the non-resonant oscillating mirror. Therefore, conventionally, a solution to the above problems has been demanded.

[0013]

SUMMARY OF THE INVENTION The present invention comprises an oscillating reflector for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of arrangement of the above-mentioned light information, A display in which light deflected by the above-mentioned swinging reflecting mirror is made incident on a light-to-light conversion element including at least a photoconductive layer member and a light modulation material layer member between two electrodes. In the device, the reciprocal rotation operation time in the above-described swinging reflection mirror that performs reciprocating rotation operation at an oscillation cycle corresponding to the vertical scanning cycle of the original image signal to be displayed is set as the display object. It is set to be larger than the vertical blanking period of the original image signal, and the forward rotation of the oscillating reflecting mirror is shortened with the increase of the backward rotating operation time of the oscillating reflecting mirror. The part of the image signal during the working time excluding the vertical blanking period The optical signal is generated by linearly arranging the original image signal in a specific direction in the predetermined direction by the image signal which is time-axis compressed for the original image signal, and the optical information is forwarded to the swing reflecting mirror. A display device adapted to be applied to a swing reflecting mirror during a dynamic motion period, and a swing for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the array of the light information described above. A light-to-light conversion element comprising a reflecting mirror and configured to include the light deflected by the oscillating reflecting mirror described above and including at least a photoconductive layer member and a light modulation material layer member between two electrodes. In the display device in which the light is incident, the reciprocal rotation operation in the oscillating reflecting mirror, which performs the reciprocal rotation operation in an oscillating cycle corresponding to the vertical scanning cycle of the original image signal to be displayed. Time vs. display Set to a larger value than the vertical blanking period of the original image signal, and the forward rotation of the oscillating reflecting mirror is shortened with the increase of the backward rotating operation time of the oscillating reflecting mirror. An image signal that has been time-axis compressed with respect to the original image signal so that all of the image signal during the period other than the vertical blanking period can be accommodated within the production time linearly in a specific direction in the predetermined direction described above. By generating the optical information lined up and giving the optical information to the swinging reflector during the forward turning sequence in the swinging reflecting mirror, and within the backward turning sequence during the swinging reflecting mirror, The above-mentioned predetermined value is determined by an image signal obtained by performing time-axis compression on the original image signal so that all of the same image signals as the image signals used for display are accommodated within the forward rotation time of the swing reflecting mirror. Opposite to the specific direction in the given direction A display device which generates optical information linearly aligned in a direction and gives the optical information to the oscillating reflecting mirror during the backward rotation operation period of the oscillating reflecting mirror, and in a predetermined direction. An oscillating reflecting mirror for deflecting linearly arranged optical information in a direction orthogonal to the direction of the arrangement of the optical information is provided, and the light deflected by the oscillating reflecting mirror is provided between two electrodes. In a display device configured to enter a light-to-light conversion element including at least a photoconductive layer member and a light modulation material layer member, a forward rotation operation time and a reverse rotation time in the swing reflecting mirror described above are set. The turning operation time and the vertical scanning period of the original image signal which is the object of display are set to be equal to each other, and within the forward turning operation time of the oscillating reflecting mirror,
Optical information linearly arranged in a specific direction in a predetermined direction is generated by the image signal of the n-th vertical scanning period in the original image signal, and the optical information is moved forward and backward in the rocking reflecting mirror. It is applied to the inside oscillating reflecting mirror, and within the above-described reciprocating rotation operation time of the oscillating reflecting mirror, by the image signal in the (n + 1) th vertical scanning period of the original image signal, a specific direction in a predetermined direction A display device, a brain, and a display device configured to generate optical information linearly arranged in a direction opposite to the direction and to provide the optical information to the swing reflecting mirror during the backward rotation operation period in the swing reflecting mirror. Light information linearly arranged in a predetermined direction is provided with an oscillating reflecting mirror that deflects in a direction orthogonal to the direction of the arrangement of the optical information, and the light deflected by the oscillating reflecting mirror described above, At least the photoconductive layer portion between the two electrodes 1 in an in and has a display device so as to be incident on the light over the light conversion device is configured to include a light modulating material layer member, the frame sequential three primary image signal
The oscillating reflector is reciprocally rotated in a cycle twice as long as the vertical scanning cycle of one primary color signal, and one vertical scanning of the image signals of each of the frame sequential primary colors arranged continuously on the time axis. When the optical information based on the image signal for each period is deflected during forward and backward movements of the oscillating reflecting mirror, the optical information arranged linearly in a specific direction in a predetermined direction based on the image information described above is used. The optical information generated by the image signal of each of the frame sequential image signals of the primary colors, which are continuously arranged on the time axis, is deflected when the oscillating reflecting mirror is rotated back and forth. In this case, the display device is configured to generate light information linearly arranged in a direction opposite to the specific direction in the predetermined direction, and to give the light information to the swing reflecting mirror. , And light information linearly arranged in a predetermined direction, A swing reflecting mirror for deflecting the light in a direction orthogonal to the array direction of the optical information, and at least the photoconductive layer member and the light modulator between the two electrodes for deflecting the light deflected by the swing reflecting mirror. In a display device configured to enter a light-to-light conversion element including a layer member, one of image signals of three frame-sequential primary colors is provided.
A means for reciprocally rotating the oscillating reflector at a period twice the vertical scanning period of one primary color signal, and a time position that does not cause image distortion due to nonlinearity of displacement of the oscillating reflector on the time axis. Means for giving optical information to the oscillating reflector and changing the light intensity of the above-mentioned optical information with the non-linearity of the displacement of the oscillating reflector on the time axis so that shading does not occur in the image. Means and the optical information of the image signal of each frame-sequential primary color which is deflected during the forward and backward movements of the oscillating reflecting mirror, in the direction predetermined by the above-mentioned image information. Optical information based on the image signals for each vertical scanning period of the image signals of each of the frame sequential primary colors that are arranged in a line in a specific direction and are deflected during the backward rotation of the oscillating reflecting mirror is: Specific direction in the above-mentioned predetermined direction And a display device provided with a means for linearly arranging in a direction opposite to that, and the optical information linearly arranging in a predetermined direction with the direction of the arrangement of the optical information. An oscillating reflector for deflecting in a direction orthogonal to each other is provided, and the light deflected by the oscillating reflector is configured to include at least a photoconductive layer member and a light modulation material layer member between two electrodes. In the display device which is made to enter the light-to-light conversion element, the means for reciprocally rotating the oscillating reflecting mirror in correspondence with the vertical scanning period of the image signal, and the displacement time of the oscillating reflecting mirror. Means for giving optical information to the oscillating reflector at a time position that does not cause image distortion due to non-linearity on the axis, and the light intensity of the optical information described above as nonlinearity on the time axis of displacement of the oscillating reflector. Correspondingly, shading is generated in the image. Provides a display device comprising a means for changing so as not.

[0014]

According to the present invention, the backward rotation operation time in the oscillating reflecting mirror which performs the reciprocating rotation operation at the oscillation cycle corresponding to the vertical scanning cycle of the original image signal to be displayed is set as the display object. The vertical movement of the oscillating reflector is shortened with the increase of the backward rotation and operation time of the oscillating reflector, which is set larger than the vertical blanking period of the original image signal. An image signal obtained by performing time-axis compression on the original image signal is generated so that the portion of the image signal during the period other than the vertical blanking period can be accommodated within the working time. Then, using the image signal described above, optical information linearly arranged in a specific direction in a predetermined direction is generated, and the optical information is oscillated and reflected by the oscillating reflecting mirror during the forward rotation period. Give to the mirror. Further, the backward rotation operation time in the oscillating reflecting mirror which performs the reciprocating rotation operation in the oscillation cycle corresponding to the vertical scanning cycle of the original image signal to be displayed is set as the display object. It is set larger than the vertical blanking period of the original image signal, and the forward rotation operation of the oscillating reflecting mirror is shortened as the backward rotation operation time of the oscillating reflecting mirror is increased. An image signal is generated by performing time-axis compression on the original image signal so that the entire image signal during the period excluding the vertical blanking period can be accommodated within the time.

Using the above-mentioned image signal, light information linearly arranged in a specific direction in a predetermined direction is generated, and the light information is generated during the forward rotation operation period in the swing reflecting mirror. Giving to the rocking reflector. Further, all the same image signals as the image signals used for the display are set within the forward rotation operation time of the oscillating reflecting mirror within the backward rotation operation time of the oscillating reflecting mirror. An image signal obtained by performing time-axis compression on the original image signal is generated. The image signal generates optical information linearly arranged in a direction opposite to a specific direction in a predetermined direction, and the optical information is oscillated during the backward rotation operation period in the oscillating reflecting mirror. Give to the dynamic reflector.

Further, the forward rotation operation time and the backward operation time of the oscillating reflecting mirror are set to be equal to the vertical scanning cycle of the original image signal to be displayed, respectively.
Within the forward rotation cycle time of the oscillating reflector, the optical information linearly arranged in a specific direction predetermined by the image signal of the n-th vertical scanning period in the original image signal is generated. The optical information is given to the swing reflecting mirror during the forward rotation operation period of the swing reflecting mirror. In addition, n + in the original image signal is returned within the above-described backward rotation operation time of the swing reflecting mirror.
The image signal of the first vertical scanning period is used to generate optical information linearly arranged in a direction opposite to a specific direction in a predetermined direction, and the optical information is re-rotated in the swing reflecting mirror. It is given to the rocking reflector during the work period.

Furthermore, when a color image is displayed by image signals of three primary colors in a frame sequential manner, when the oscillating reflecting mirror is reciprocally rotated at a cycle twice the vertical scanning cycle of each primary color signal, In the case where the optical information based on the image signal of each of the frame sequential primary colors arranged continuously on the time axis in each vertical scanning period is deflected during the forward and backward movement of the oscillating reflector. , Generating optical information linearly arranged in a specific direction in a predetermined direction based on the image information and supplying the optical information to the oscillating reflecting mirror, and, on the other hand, a frame-sequential arrangement arranged continuously on the time axis. In the case where the optical information of the image signal of each primary color image signal in each vertical scanning period is deflected during forward and backward movements of the oscillating reflector, the specific direction in the predetermined direction is An oscillating reflector that generates optical information linearly arranged in opposite directions Give.

Further, the distortion of the shape generated in the image due to the non-linearity of the displacement of the oscillating reflector on the time axis corresponds to the non-linearity of the displacement of the oscillating reflector on the time axis of the oscillating reflection. Eliminates by changing the time position where optical information is given to the mirror. Even when the time position for giving the optical information to the oscillating reflector is changed as described above, in correspondence with the non-linearity of the displacement of the oscillating reflector on the time axis so that shading does not occur in the image, The intensity of the optical information supplied to the oscillating mirror is changed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the display device of the present invention will be described in detail below with reference to the accompanying drawings. 1 and 5
2 is a perspective view of an embodiment of the display device of the present invention, FIGS. 2 and 3 and 6 are block diagrams of a part of the constituent circuits, and FIGS. 4 and 7 to 10 are for explaining the constituent principle and the operating principle. FIG. 12 is a waveform diagram showing a configuration example of the light-light conversion element. 1 and 5 showing the display device of the present invention, the same reference numerals as those used in FIG. 11 are used for the components corresponding to those in the display device described above with reference to FIG. The sign is used. In FIGS. 1 and 5 showing the display device of the present invention, REA is N (where N is a natural number of 2 or more) pixels and N (where N is a natural number of 2 or more) light emitting elements corresponding to the pixels. Is a light emitting element array in which are linearly arranged. In each drawing, 1 is a signal source for generating an image signal to be displayed, and writing is radiated from N light emitting elements by the image signal supplied from the signal source 1 to the light emitting element array REA. The light is emitted with an emission intensity according to the information of N pixels on one straight line in the image to be displayed.

When the image information to be displayed is a time-series image signal, the above-mentioned light emitting element array REA
When the writing light to be emitted from the N light emitting elements by the image signal supplied to the display device is simultaneously emitted for a predetermined period, it is supplied from the signal source of the image information to the display device. In such a case, for example, N pixel information in a time-series image signal output from a signal source of image information is converted into a simultaneous signal by a serial / parallel conversion circuit (for example, a shift register), and a light emitting element array is obtained. It may be supplied to REA. The light emitting element array REA is intensity-modulated by N pixel information.
The N light fluxes emitted from the N light emitting elements in (3) enter the optical deflecting device using the swing reflecting mirror Mg via the lens L.

Now, the image signal shown in FIG. 4 (a) is vertically deflected by the optical deflecting device using the oscillating reflecting mirror Mg for vertical display, and is required for accurate display of the oscillating reflecting mirror Mg. The mode of displacement on the time axis is as shown in FIG. 4B, but the oscillating reflecting mirror Mg is moved within the vertical blanking period in the image signal illustrated in FIG. 4A. As described above, it is difficult to construct an optical deflecting device using an oscillating reflector so that the oscillating reflector can be rotated back and forth. However, in the display device shown in FIG. Is set to a longer time to facilitate the configuration of the optical deflecting device using the swing reflecting mirror Mg, and the swing reflecting mirror M described above is used.
The time axis of the image signal to be displayed is converted in response to the change in the time length of the backward rotation operation of g so as to solve the conventional problems.

In the display device shown in FIG. 1, reciprocating rotation operation is performed at a swing period corresponding to the vertical scanning period 1V of the original image signal to be displayed as shown in FIG. 4A. As shown in (d) of FIG. 4, the period of the reciprocal rotation operation of the oscillating reflecting mirror Mg of the optical deflecting device is performed as shown in (d) of FIG. The vertical retrace period is set within the forward rotation operation time of the oscillating reflector, which is shortened as the backward rotation operation time of the oscillating reflector Mg increases. The signal source 1 generates an image signal as shown in FIG. 4C in which the original image signal is time-axis-compressed so that the portion of the image signal in the excluded period is contained, and the image signal is generated by the light emitting element array REA. Writing light emitted from N light emitting elements to the lens L
The light is made incident on the optical deflecting device by the oscillating reflecting mirror Mg via. The above-mentioned light flux that has entered the oscillating reflecting mirror Mg moves repeatedly from the top to the bottom of the light-light conversion element SLM at a constant moving speed, and the operation is repeated. Is projected onto the light-to-light conversion element SLM, and the light is imaged as writing light on the photoconductive layer member of the light-to-light conversion element (spatial light modulation element) SLM, and the light-to-light conversion is performed. Image information to be displayed is written in the element SLM.

The reading of the information signal from the light-to-light conversion element SLM in which the image information to be displayed is written and the projection operation on the screen S are as shown in FIGS. 11 and 12.
And as described above with reference to. That is,
Readout light R emitted from the light source LS of the readout light in FIG.
When L is incident on the polarization beam splitter PBS, the S-polarized light component of the read light RL is reflected by the polarization beam splitter PBS toward the read side of the light-light conversion element SLM, and the light-light conversion element SLM. The incident read light RL from the transparent substrate BP2 on the read side of FIG.
As already described with reference to, the reflected light of the read light which reaches the dielectric mirror DML by the path of the transparent substrate BP2 → the transparent electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML, Dielectric mirror DML → light modulation material layer member PML → transparent electrode Et2 → transparent substrate BP2 → the light is emitted from the light-to-light conversion element SLM, is incident on the polarization beam splitter PBS, and is P-polarized light in the incident light. The components are simultaneously given from the polarization beam splitter PBS to the projection lens Lp, which projects them onto the screen S.
The light is projected as N light spots linearly arranged on the upper side.

FIG. 2 shows the display device of the present invention shown in FIG. 1 in which the vertical blanking period is longer than that of the original image signal to be displayed as shown in FIG. FIG. 5 is a block diagram showing a configuration example of a signal generation unit that is also capable of generating an image signal as shown in (c), (e), and (g) of FIG. 4 having a vertical blanking period. , Also Fig. 3
FIG. 3 is a block diagram of a signal generator configured by using a FIFO (20) as a storage device. The signal generator illustrated in FIGS. 2 and 3 is a part of the component of the signal source 1 shown in FIG. 2 and 3, 6 is an input terminal for the original image signal to be displayed {for example, the original image signal to be displayed as shown in FIG. 4 (a)}, and 19 is an output terminal. Is. The original image signal to be displayed, which is supplied to the input terminal 6 in FIG.
In accordance with the switching operation of the signal switching device 7, the image signals for each vertical scanning period are sequentially and alternately stored through the lines 8 and 9 in the storage devices 10 and 1.
Supply to 1. In the following description, the image signals stored in the storage devices 10 and 11 are as follows for the sake of simplicity.
It is said that the image signal has a time length of one vertical scanning period from the start end of the vertical blanking period in the successive vertical scanning periods.

A frame memory, for example, can be used as the storage device 10 or 11. The signal switching operation in the signal switch 7 is performed by the switching control signal generated in the write / read control unit 4. In the write / read controller 4, the switching generated based on the periodic signal such as the vertical synchronizing signal of the original image signal to be displayed, which is supplied from the input terminal 6 through the line 25. A control signal is supplied to the signal switches 7 and 18 via lines 24 and 14, a write control signal and a read control signal are supplied to the storage devices 10 and 11 via lines 12 and 13, and a line 23 is used. A control signal is supplied to the address signal generator 5 via the.

The operation of the signal generator shown in FIG. 2 when the image signal shown in FIG. 4A is time-axis compressed and converted into the image signal shown in FIG. 4C, for example. Is as follows: For example, the signal switch 7 to which the original image signal shown in FIG.
The switching operation is performed by the switching control signal supplied from the line 24 to the image signals shown in FIG. Are sequentially and alternately supplied to the storage devices 10 and 11 via. The storage devices 10 and 11 include the write / read controller 4
From the write control signal or the read control signal supplied via the lines 12 and 13, and the address signal generator 5.
When one storage device 10 (or 11) is performing the storage operation for one vertical scanning period by the address signal supplied from the address supply lines 15a and 15b from the other storage device 11 ( Or 1
0) is set to a state in which the reading operation is performed for one vertical scanning period, so that the writing operation and the reading operation are sequentially and alternately performed, and the writing operation and the reading operation are performed. By changing the cycle of the clock signal in and, a predetermined time base compression is performed on the image signal.

The image signals read from the storage devices 10 and 11 are supplied to the signal switch 18 via lines 16 and 17. The signal switch 18 is connected to the line 14 from the read / write controller 4.
The image signals read from the storage devices 10 and 11 are sent to the output terminal 19 as they are switched by the switching control signal supplied via the. As described above, FIG.
(A) of the swing deflecting mirror Mg of the optical deflecting device for reciprocating and swinging at the swing period corresponding to the vertical scanning period 1V of the original image signal to be displayed As illustrated in FIG. 4D, the period of the dynamic motion is set to be larger than the vertical blanking period of the original image signal to be displayed, and the oscillating reflector Mg (C) in FIG. 4 so that the portion of the image signal during the period excluding the vertical blanking period falls within the forward rotation sequence time of the oscillating reflecting mirror shortened with the increase in the backward rotation sequence time in FIG. As shown in (3), if the light emitted by the image signal obtained by compressing the original image signal on the time axis is vertically deflected by the oscillating reflecting mirror Mg, the image signal It is possible to easily display an image in a state in which the contents are not lost.

When the display mode performed by the display device shown in FIG. 1 is performed as described with reference to FIGS. 4 (c) and 4 (d), the swing reflecting mirror Mg rotates. Driving of the oscillating reflecting mirror Mg is facilitated by the length of the oscillating reflecting mirror set, but naturally, the brightness of the image is increased by the amount of setting of the oscillating reflecting mirror Mg. However, the problem is that the compression mode of the time axis of the image signal is made to be as illustrated in, for example, (e) and (g) of FIG. This can be solved by setting the manner of setting the rotation cycle time as illustrated in FIGS. 4 (f) and 4 (h).

First, FIGS. 4 (e) and 4 (f) show the above-mentioned diagrams as exemplified by FIG. 4 (f) showing the manner of setting the rotational movement time of the oscillating reflecting mirror Mg. 4 (d) is significantly larger than the case of (d) of FIG. 4 (in FIG. 4 (f), the forward rotation operation time of the swing reflecting mirror Mg and the backward rotation operation time of the swing reflecting mirror Mg are set. The case where both are equal and both are set to 1 V / 2 is illustrated. However, in carrying out the present invention, the forward and backward operation time of the oscillating reflecting mirror Mg and the backward oscillating movement of the oscillating reflecting mirror Mg. The work time does not have to be equal. }, And light generated by the same image signal is generated in the swing reflecting mirror Mg both during the forward turning of the swing reflecting mirror Mg and during the backward turning of the swing reflecting mirror Mg. The original image signal shown in FIG. 4 (a) is illustrated in FIG. 4 (e) by a signal generator as illustrated in FIG. 2 so that it can be reflected by the same reflecting surface. After being converted into the image signal as shown in FIG. 4, the image signal as illustrated in FIG. 4E is the tip of the arrow written between FIG. 4E and FIG. The figure shows the case where the light is reflected by the oscillating reflecting mirror Mg during the time indicated by.

The image signals illustrated in FIG. 4E are the image signals F1, F2 ... Of the original image signal shown in FIG. Two storage devices 10, 1 in the signal generator illustrated in FIG.
The point that the data is sequentially written alternately in 1 is (c) in FIG.
Similar to the case already described with reference to (d), the image signal of one vertical scanning period written in the storage device 10 (or 11) has a time length of one vertical scanning period of the original image signal. 1 /
After being read out once for a time length of 2, the next 1 of the original image signal is read.
The oscillating reflecting mirror Mg is read once again in a reading manner opposite to the reading manner at the time of reading the image signal, which has a half of the time length of the vertical scanning period.
At the time of both forward and backward movements of the oscillating reflecting mirror Mg, and light at the time of returning and oscillating movement of the oscillating reflecting mirror Mg, light by the same image signal is reflected by the same reflecting surface of the oscillating reflecting mirror Mg. It is.

The above operating state is shown in FIG. 4 (e) in the vertical scanning period F1 (α, β) → vertical scanning period F1 (β, α) → vertical scanning period F2 (α, β) → vertical scanning period. F2 (β, α) → vertical scanning period F3 (α, β) → vertical scanning period F3 (β, α) → ... and written between (e) and (f) in FIG. Although illustrated and described by arrows, the above-mentioned write and read operations in the memory devices 10 and 11 include the control of the generation mode of the address signal in the address signal generator 5 and the write and read operations in the memory devices 10 and 11. This can be achieved satisfactorily by the control operation of the write / read controller 4 that controls the above.

Next, FIGS. 4 (g) and 4 (h) show swing rocking mirror Mg as shown in FIG. The forward rotation operation time of Mg and the backward rotation operation time of the oscillating reflecting mirror Mg are set to be 1 V / 2, which is larger than the case of (d) of FIG. 4 described above. The width is large, and at the time of the forward rotation of the swing reflecting mirror Mg and the backward rotation of the swing reflecting mirror Mg,
When the light from the image signal of one successive vertical scanning period is reflected by the oscillating reflecting mirror Mg, the display images displayed by the oscillating reflecting mirror Mg are sequentially alternated from the storage devices 10 and 11 so that the displayed image is in a normal state. The image signals of one sequential vertical scanning period F1, F2, ... Read in the vertical scanning period F1 (α, β)
→ vertical scanning period F2 (β, α) → vertical scanning period F3 (α, β) →
The reading mode is as follows. Storage device 10,
The above-mentioned write / read operation in 11 controls the generation of the address signal in the address signal generation section 5, and the control operation of the write / read control section 4 that controls the write operation and read operation of the storage devices 10 and 11. Needless to say, it is well realized by.

As described above, the vertical scanning period 1 of the original image signal to be displayed as shown in FIG.
As shown in FIGS. 4 (f) and 4 (h), modes of reciprocating rotation operation of the oscillating reflecting mirror Mg of the optical deflecting device which performs reciprocating rotation operation at an oscillation cycle corresponding to V are illustrated. , Is set larger than the vertical blanking period of the original image signal to be displayed, and both the forward rotation period and the backward rotation period of the swing reflecting mirror Mg are set. Light emitted by an image signal obtained by compressing the original image signal in the time axis as shown in (e) and (g) of FIG. 4 so that the portion of the image signal during the period excluding the vertical blanking period is accommodated in each period. Rocking reflector Mg
If the vertical deflection is performed by, it is possible to easily display an image in a state in which the contents of the image signal are not lost even if the swinging / reflecting mirror Mg takes a long time for each backward rotation.

In implementing the display device of the present invention having the structure as shown in FIG. 1, the light vertically deflected by the rocking reflecting mirror Mg is intensity-modulated by, for example, an image signal. The light beam may be a light beam which is deflected in one direction in the above state. Further, in carrying out the present invention, the manner of setting the rotation and rotation time of the oscillating reflector Mg is shown in FIG. As illustrated in (h), a state in which the forward rotation operation time of the oscillating reflecting mirror Mg and the backward rotation operation time of the oscillating reflecting mirror Mg are made equal, and both are set to 1V / 2. At the time of the forward rotation operation of the oscillating reflecting mirror Mg and the backward turning operation of the oscillating reflecting mirror Mg, the light generated by the image signal in one vertical scanning period is sequentially transmitted. When reflected by, the display image displayed by it will be in a normal state. In so that, successively one vertical scanning is sequentially read alternately from the memory devices 10 and 11 periods F1, F2
The image signal of ... Is read in the vertical scanning period F1 (α, β) → vertical scanning period F2 (β, α) → vertical scanning period F3 (α, β) → ..., or the vertical scanning period F1 ( The state of the display image can be inverted upside down by adopting a reading mode such as β, α) → vertical scanning period F2 (α, β) → vertical scanning period F3 (β, α) →. Further, if the reading from the storage devices 10 and 11 is reversed on the left and right on the display screen, the left and right display images are also reversed. As a result, a display image in which the top, bottom, left, and right are inverted can be easily displayed, so that a display device that can be used for both the front projector and the rear projector can be easily provided.

Next, in the display device of the present invention shown in FIG. 5, REA corresponds to N pixels (where N is a natural number of 2 or more) and N pixels (where N is a natural number of 2 or more). ) Is a light emitting element array in which the light emitting elements are linearly arranged, and 1 is a signal source for generating a color image signal to be displayed. In the following description, the color image signal supplied from the signal source 1 to the light emitting element array REA is assumed to be a frame-sequential color image signal by the three primary color signals R, G, B of additive color mixture. The writing light emitted from the N light emitting elements by the frame-sequential color image signal supplied from the signal source 1 to the light emitting element array REA is N on one straight line in the image to be displayed. Light is emitted with an emission intensity according to the information of each pixel. Writing light to be emitted from N light emitting elements according to the image signal supplied to the light emitting element array REA described above,
In order to make the light sources simultaneously emit light for a predetermined period, for example, N pixel information in a time-series image signal output from a signal source of image information is serial-parallel conversion circuit (eg, shift register). It suffices to convert the signal to a simultaneous signal by the above and supply it to the light emitting element array REA.
The N light fluxes emitted from the N light emitting elements in the light emitting element array REA are transmitted through the lens L to the swing reflecting mirror Mg.
Will be incident on the optical deflector.

(A) in each of FIGS. 7 to 10,
The diagram (b) has the same contents as the diagrams (a) and (b) of FIG. 4 described above. 1 V image signal of one vertical scanning period (one field period) of
Symbols such as 2, F3 ... Show field numbers. Further, in the image signal of each successive 1 V vertical scanning period which is continuously arranged on the time axis shown in FIG. In the above, the part denoted by the symbol α is 1 V in each vertical scanning period.
Shows the beginning part of the image signal, and the part denoted by the symbol β shows the end part of the image signal in each vertical scanning period 1V. The meanings of the symbols α and β are the same as the symbols α and β used in (c) to (f) in each of FIGS. 7 to 10.

Each of the above-mentioned FIGS. 7 to 10
In the figure of (c), the symbols F1R, F2R, F3R ... Indicate the signals of the red primary color signal R in one vertical scanning period in the image signals of the three primary colors (three primary color signals). In each figure of (d) in each of FIGS. 7 to 10, F1G, F2G, F3
The reference symbol G ... indicates a signal of the green primary color signal G in the three primary color signals in one sequential vertical scanning period.
Through (e) in each figure of FIG. 10, F1B, F2
B, F3B ... Are signals of the blue primary color signal B of the three primary color signals in one sequential vertical scanning period, and are shown in (c) to (e) of each of FIGS. 7 to 10. The three primary color signals are simultaneous signals as can be seen from the field numbers shown in the figure.

Further, each of the drawings in FIGS.
In (g), the displacement mode on the time axis due to the rotational movement of the swing reflecting mirror Mg used in the display device shown in FIG. 5, that is, the swing of the swing reflecting mirror Mg. The mode of motion is shown, and each of the figures in FIGS.
(f) shows each (g) in each of the above-mentioned FIGS. 7 to 10.
The field-sequential image signal for generating the optical information which is sub-scanned by the oscillating motion of the oscillating reflecting mirror Mg shown in FIG. In addition, the field sequential sequential three-primary-color signals shown in (f) in each of FIGS. 7 to 10 have a vertical scanning period of an image signal (each primary-color signal) of each primary color. It is 1/3 of the vertical scanning period in the simultaneous signals of the three primary color signals shown in (c) to (e) of each of FIGS. 7 to 10. By the way, the frame sequential (field sequential) three primary color signals shown in (f) in each of FIGS. 8 to 10 are shown in each (g) in each of FIGS. 8 to 10. The sub-scanning of the optical information by the above-mentioned three primary color signals is carried out only in the forward and backward movements in the swinging movement of the swingable reflecting mirror Mg, but the three sequential primary colors shown in FIG. The signal is a light based on the above-described three primary color signals during both forward rotation and reverse rotation in the swing motion of the swing reflecting mirror Mg shown in FIG. 7G. Since sub-scanning of information is performed, the arrangement of signals in each one vertical scanning period on the time axis is shown in FIG. 7 (f).
As can be seen from the symbol α indicating the beginning of one vertical scanning period and the symbol β indicating the end of one vertical scanning period shown therein, the state is inverted every one vertical scanning period.

Each of (c) to FIG. 7 to FIG. 10 described above
To obtain the frame sequential three primary color signals as shown in (f) of each figure by subjecting the simultaneous signals of the three primary color signals shown in (e) to time axis compression and other signal processing. The signal conversion processing is performed in the signal source 1 that operates under the control of the control unit 2 in the display device in FIG. 5, and the frame sequential three primary color signals generated in the signal source 1 are the light emission in FIG. The writing light supplied to the element array REA and emitted from the light emitting element array REA is incident on the optical deflecting device by the swing reflecting mirror Mg via the lens L. The above-mentioned light flux incident on the oscillating reflecting mirror Mg moves repeatedly from the top to the bottom of the light-to-light conversion element SLM at a constant moving speed, and the configuration and operation are repeated with reference to FIG. Is projected onto the light-to-light conversion element SLM, and the light is used as writing light.
(Spatial light modulator) Imaged on the photoconductive layer member of the SLM,
Image information to be displayed is written in the light-to-light conversion element SLM.

The basic operation of reading the information signal from the light-to-light conversion element SLM in which the image information to be displayed is written and projecting it onto the screen S is as shown in FIG.
1 and FIG. 12 as described above. The read light RL of white light emitted from the light source LS of the read light in FIG. 5 is incident on the polarization beam splitter PBS through the rotary type frame sequential optical filter CF that transmits the primary color lights in the frame sequential manner. Of course, as the above-mentioned frame sequential optical filter CF, for example, a liquid crystal shutter type may be used, and the primary colors incident on the polarization beam splitter PBS via the above described frame sequential optical filter CF. It is a matter of course that the light types are switched so that color synchronization is established between the two so as to be performed in a state in which the types of primary color signals in the frame sequential three primary color signals are correctly associated.

The S-polarized light component of the read light RL for each specific primary color is reflected by the polarization beam splitter PBS toward the read side of the light-light conversion element SLM, and the light-light conversion element S is reflected.
The light enters from the transparent substrate BP2 on the read side of the LM. As described above with reference to FIG. 12, the read light RL reaches the dielectric mirror DML through the path of the transparent substrate BP2 → the transparent electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML, and is reflected there. The reflected light of the read-out light is emitted from the light-light conversion element SLM along the route of the dielectric mirror DML → the light modulation material layer member PML → the transparent electrode Et2 → the transparent substrate BP2 →, and enters the polarization beam splitter PBS. The P-polarized light component in the incident light is the polarization beam splitter PBS.
From the projection lens Lp at the same time
Causes it to be projected as N light spots of light for each specific primary color linearly arranged on the screen S.

FIG. 6 shows the display device of the present invention shown in FIG. 5, in which (c) through (c) in each of FIGS.
The simultaneous signals of the three primary color signals shown in (e) are subjected to time-axis compression and other signal processing to perform frame sequential (field sequential) 3 as shown in (f) of each figure. FIG. 7 is a block diagram of a signal generation unit for generating a primary color signal, and the signal generation unit illustrated in FIG. 6 constitutes a part of the component of the signal source 1 shown in FIG. 5. In FIG. 6, 27 to 29 are input terminals for simultaneous signals of three primary color signals, and 19 is an output terminal for frame sequential signals of three primary color signals.
The terminal 27 is supplied with the red primary color signal (R signal) shown in each (c) in each of FIGS. 7 to 10, and the terminal 28 is connected to the terminal shown in FIGS. The green primary color signal (G signal) shown in each (d) in each figure of FIG. 10 is supplied, and the terminal 29 described above is supplied to each (e) in each figure of FIGS. 7 to 10 described above. The blue primary color signal (B signal) shown is provided.

The R signal supplied to the above-mentioned terminal 27 is
In accordance with the switching operation of the signal switching device 30, the R signal for each one vertical scanning period is sequentially and alternately stored via the lines 35 and 38 in the storage device 4.
The G signal supplied to the terminals 1 and 44 and to the terminal 28 described above is supplied to the line 3 according to the switching operation of the signal switch 31.
The G signal for each vertical scanning period is sequentially and alternately supplied to the storage devices 42 and 45 via 6, 39, and the B signal supplied to the above-mentioned terminal 29 corresponds to the switching operation of the signal switch 32. B through the vertical lines 37 and 40 for each vertical scanning period
The signals are sequentially and alternately supplied to the storage devices 43 and 46. In the following description, for simplification of description, the image signal stored in each of the storage devices 41 to 46 is an image signal having a length of one vertical scanning period from the start of the vertical blanking period in the successive vertical scanning periods. Is said to be.

As the above-mentioned storage devices 41 to 46,
For example, a frame memory can be used, and in the signal switching operation in each of the signal switching devices 30 to 32, the switching control signal generated in the writing / reading control unit 4 is supplied via the lines 47 to 49. It is done by In the write / read controller 4, the switching control signal generated based on the periodic signal such as the direct sync signal of the image signal supplied from the input terminal 26 is transmitted through the lines 47 to 49 as described above. To the respective signal switching devices 30 to 32, to the signal switching device 18 via the line 14 or to write control signals and read control signals to the storage devices 41 to 46 via the lines 50 to 55. Supply or wire 23
A control signal is supplied to the address signal generator 5 via the. The address signal generated by the address signal generator 5 is sent to each storage device 41 via the address supply lines 56 to 61.
~ 46. The image signals read from the storage devices 41 to 46 are supplied to the signal switch 18 via the transmission lines 62 to 67, and the image signals output from the signal switch 18 are amplitude-adjusted by the output adjuster 69. Is adjusted and then supplied to the light emitting element array REA in FIG. 5 through the output terminal 19.

The frame sequential three primary color signals shown in (f) in each of FIGS. 7 to 10 are as shown in (g) in each of FIGS. 7 to 10. It is a frame sequential three primary color signal used to generate optical information for sub-scanning by the oscillating reflecting mirror Mg having various displacement characteristics.
Here, the simultaneous signals of the three primary color signals shown in (c) to (e) of FIGS. 7 to 10 are supplied to the signal generating section shown in FIG. Time-axis compression and other signal processing are performed on the simultaneous signals, and the same as in FIGS.
(F) of each figure required for generating the optical information which is sub-scanned by the oscillating reflecting mirror Mg having the displacement characteristic as shown in the figure (g) of each figure. As an example, as shown in FIG. 7G, the operation of the signal generating unit in FIG. 5 when generating the field sequential three primary color signals as shown in FIG. A swing reflector Mg having swing characteristics such that the forward rotation period and the backward rotation period are the same is used, and the forward rotation period and the backward rotation period of the swing reflecting mirror Mg are used. In each period of
7 (c) to 7 (e) in FIG. 7 are the three sequential primary field signals of field sequential (field sequential) as shown in FIG. 7 (f) which are used to generate optical information to be sub-scanned.
To the simultaneous signals of the three primary color signals shown in
The operation of the signal generating section shown in FIG. 5 when other signal processing is performed to generate the signal will be described as follows.

The signal switching unit 30 to which the R signal is supplied via the terminal 27 performs the switching operation by the switching control signal supplied from the write / read control unit 4 via the line 47, so that one vertical signal of the R signal is output. Image signals for each time length of the scanning period are sequentially and alternately supplied to the storage devices 41 and 44 through the lines 35 and 38. The storage devices 41 and 44 are supplied with write control signals or read control signals from the write / read control unit 4 via lines 50 and 53, and from the address signal generation unit 5 via address supply lines 56 and 59. One of the storage devices 41 depending on the supplied address signal.
When (or 44) is in the state of performing the storage operation for one vertical scanning period, the other storage device 44 (or 41) is set in the state of performing the reading operation for one vertical scanning period. , The write operation and the read operation are alternately performed in sequence. Then, the cycle of the clock signal during the read operation in the memory device 41 (or 44) is set to 1/3 of the cycle of the clock signal during the write operation, and the data is read from the memory device 41 (or 44). The R signal in the frame sequential three-primary-color signal is converted into a signal in which the time axis compression of ⅓ of the simultaneous R signal supplied to the input terminal 27 is performed.

As described above, among the three primary color signals supplied as the simultaneous signals to the terminals 27 to 29, the R signal shown in FIG. 7C supplied to the terminal 27 is stored. Field sequential 3 read out sequentially from the storage devices 41, 44
The R signal in the primary color signal is supplied to the terminal 27 in FIG.
The signals F1R → F2R → F3R ... Of one sequential vertical scanning period in the R signal shown in (c) of the above are converted into signals which are time-axis compressed to 1/3 as described above. At the same time, the state of the array of signals in the R signals of successive vertical scanning periods that are continuous on the time axis is in a state of being inverted every vertical scanning period. The above-mentioned point is that the R signal in one vertical scanning period to which an odd field number is added in the array of the primary color signals of the frame sequential three primary color signals shown in (f) of FIG. This can be easily known from the positional relationship of α and β shown in the R signal of one vertical scanning period to which the field number is attached, respectively.

The R signal Fo in the frame sequential three primary color signals sequentially read from the storage devices 41 and 44 in which the R signal shown in FIG. 7C supplied to the terminal 27 is stored.
R → ... F1R → ... F2R → ... F3R → is supplied to the signal switch 18 via the lines 62 and 65, and as described above, the switching control supplied from the read / write control unit 4 via the line 14. The R signal in the frame sequential three primary color signal that has passed through the signal switch 18 that performs the switching operation according to the signal is
After the amplitude is adjusted in the output adjuster 69, it is supplied to the light emitting element array REA via the output terminal 19. By the way, the signal arrangement for only the above-mentioned R signal, that is, the signal arrangement shown as FoR → ... F1R → ... F2R → ... FoR shown in (f)
→ FoG → FoB → F1R → F1G → F1B → F2R → F2G
This corresponds to the signal arrangement in the state where only the R signal is extracted in the signal arrangement of F2B → F3R → F3G → F3B →.

In the above description, among the three primary color signals supplied as the simultaneous signals to the terminals 27 to 29, the R signal shown in FIG.
The signal processing is performed until the signal is stored in the storage devices 41 and 44 and then sequentially read out to be finally supplied from the output terminal 19 to the light emitting element array REA as an R signal in the frame sequential three primary color signals. I came to the terminal 27
Of the three primary color signals supplied as simultaneous signals to
Signal processing performed using the storage devices 42 and 45, the signal switching device 18, the output adjuster 69, and the like for the G signal shown in FIG. 7D supplied to the terminal 28, and the terminals 27 to 29. Among the three primary color signals supplied as the simultaneous signals to the storage device 43, 46 and the signal switcher 18 for the B signal shown in (e) of FIG.
Also, the signal processing performed using the output adjuster 69,
The same signal processing as described above for the R signal is performed.

As a result, with respect to the input terminals 27 to 29 of the signal generating section illustrated in FIG. 6, each of the three primary color signals of the simultaneous signals as illustrated in (c) to (e) of FIG. When the primary color signals are supplied, the signal array of the primary color signals in each one vertical scanning period in the frame sequential three primary color signals output from the output terminal 19 of the signal generation unit illustrated in FIG. As shown in f), FoR → FoG → FoB → F1
R → F1G → F1B → F2R → F2G → F2B → F3R → F3
The signal arrangement is G → F3B →. Figure 7 as above
Signal arrangement shown in (f) of FoR → FoG → FoB → F1
R → F1G → F1B → F2R → F2G → F2B → F3R → F3
In G → ..., the state of signal arrangement in the primary color signals of successive vertical scanning periods continuous on the time axis is such that the signals are inverted every vertical scanning period. Can be easily known from the positional relationship of α and β shown in the respective primary color signals of the frame sequential three primary color signals shown in FIG. 7 (f).

By the way, when there is non-linearity in the displacement of the oscillating reflecting mirror Mg during the oscillating motion of the oscillating reflecting mirror Mg, the above-mentioned azimuth of the oscillating reflecting mirror Mg is changed along the time axis. Corresponding to the non-linearity of the displacement, the image shape is distorted in the sub-scanning direction of the display image. For example, as shown in (g) of FIG. 7, the mode of displacement of the oscillating reflecting mirror Mg is such that the rotation speed of the oscillating reflecting mirror Mg changes sinusoidally on the time axis. In this case (even when a resonance type mirror is used as the oscillating reflecting mirror Mg, the mode of speed change on the time axis of the oscillating reflecting mirror Mg is sinusoidal on the time axis). The displacement state of the dynamic reflecting mirror Mg on the time axis is naturally non-linear. However, as described above, even when the displacement of the rocking reflector Mg on the time axis during the rocking motion of the rocking reflector Mg is non-linear, the rocking reflector Mg on the time axis is not changed. By changing the time at which the optical information is supplied to the oscillating reflecting mirror Mg in accordance with the mode of the speed change in the above, it is possible to prevent the image shape in the sub-scanning direction in the display image from being distorted. , That is very easy to do. That is, as described above, the time at which the optical information is supplied to the oscillating reflector Mg is changed corresponding to the non-linearity of the displacement of the oscillating reflector Mg on the time axis. The primary color signals in the frame sequential three primary color signals are read from the storage devices 41 to 46 which store the simultaneous signals of the three primary color signals shown in (c) to (e) in each of FIGS. 7 to 10. This can be realized by changing the reading speed at the time of output in correspondence with the mode of speed change of the oscillating reflecting mirror Mg on the time axis.

However, as described above, in correspondence with the non-linearity of the displacement of the oscillating reflecting mirror Mg on the time axis during the oscillating movement of the oscillating reflecting mirror Mg, the frame-sequential recording from the storage devices 41 to 46 is performed. The sub-scanning is performed by the oscillating reflecting mirror Mg by changing the reading speed at the time of reading the respective primary color signals of the three primary color signals in accordance with the mode of speed change of the oscillating reflecting mirror Mg on the time axis. Swinging reflector Mg for optical information
When the time of supply to the optical information is changed, the light intensity of the optical information corresponds to the change mode of the reading speed when reading each primary color signal of the three frame primary color signals from the storage devices 41 to 46 described above. Changes and causes unevenness in brightness (shading) in the display image. However, the problem that shading occurs in the display image due to the above-mentioned causes corresponds to the mode of change in the speed of the swing reflecting mirror Mg on the time axis. The amplitude of each primary color signal in the frame sequential three primary color signals read from the storage devices 41 to 46 according to the reading speed of each primary color signal in the frame sequential three primary color signals from the storage devices 41 to 46 changed. By supplying an amplitude control signal from the write / read controller 4 to the output regulator 69 shown in FIG. It can be.

The description of the operation example of the signal generating section illustrated in FIG. 6 performed so far with reference to FIG. 7 will be made with reference to the time axis of the rocking reflecting mirror Mg shown in FIG. In the case where the above-described swing mode is as shown in FIG. 7 (g) in which the forward rotation period and the backward rotation period of the swing reflecting mirror Mg are the same, Sub scanning of optical information is performed by a signal of one vertical scanning period of each of the sequential primary color signals in the three sequential primary color signals in each of the forward and reverse rotation periods of the mirror Mg. In this case, the period of reciprocating rotation of the swing reflecting mirror Mg shown in (g) of FIG.
The period is twice as long as the vertical scanning period of each sequential primary color signal in the frame sequential three primary color signals for which sub-scanning of optical information is performed by g.

FIG. 10 (f) shows the case where the mode of the rotational displacement of the oscillating reflecting mirror Mg on the time axis is the same as that of FIG. 7 (g) described above. The signal on the time axis when the optical information is sub-scanned during one vertical scanning period of each of the sequential primary color signals in the frame-sequential three primary color signals only during the forward rotation period in the dynamic reflecting mirror Mg. Although the array state is illustrated as an example, each of the sequential primary color signals in the frame sequential three primary color signals shown in (f) of FIG. Is shaken on the time axis as illustrated in (g) of FIG. 10 for some reason, the simultaneous signals of the three primary color signals shown in (c) to (e) of FIG. Stored storage devices 41 to 46
From Fig. 5, the read speed at the time of reading each primary color signal in the three frame primary color signals is changed in accordance with the fluctuation in time of the reciprocating rotation movement period of the oscillating reflecting mirror Mg. ing. In this way, the display image is changed by changing the read speed at the time of reading each of the primary color signals in the three frame-sequential primary color signals in response to the fluctuation in time of the reciprocating rotation operation period of the swing reflecting mirror Mg. Can be free of shape distortion.

Further, the light intensity of the light information changes corresponding to the changing mode of the reading speed when reading the respective primary color signals in the frame sequential three primary color signals from the above-mentioned storage devices 41 to 46.
The unevenness in brightness (shading) caused in the display image thereby is changed corresponding to the changing mode of the speed of the oscillating reflecting mirror Mg on the time axis.
In order to change the amplitude of each primary color signal in the frame sequential three primary color signals read from the storage devices 41 to 46 according to the reading speed of each primary color signal in the frame sequential three primary color signals from. As described above, the problem can be solved by supplying the amplitude control signal from the write / read controller 4 to the output adjuster 69 shown in FIG. 5 via 68.

FIG. 8 and FIG. 9 show that the sub information of the optical information by the signal of one vertical scanning period of each of the sequential primary color signals of the frame sequential three primary color signals is obtained only in each forward rotation operation period of the oscillating reflecting mirror Mg. This is for explaining the signal processing in the case where scanning is performed, and FIG. 8 shows the swinging reflecting mirror Mg used for sub-scanning of optical information in FIG. 8 (g). As described above, FIG. 9 is an explanatory diagram for an ideal operating state in which reciprocating rotation operations are performed at a constant repetition cycle. Further, FIG. 9 shows an oscillating reflecting mirror Mg used for sub scanning of optical information. It is a figure for demonstrating the case where it is shaking for some reason on a time-axis, as shown in (g) of FIG. As shown in (g) of FIG. 8, when the oscillating reflecting mirror Mg performs ideal oscillating motion at a constant repetition period, Storage devices 41 to 4 storing the simultaneous signals of the three primary color signals shown
6, it is possible to obtain a display image with no shape distortion by keeping the reading speed at the time of reading each primary color signal of the three frame primary color signals constant, and at this time, the display image is bright. Shading does not occur.

However, FIG. 9 shows a case where the reciprocating rotational movement period of the oscillating reflecting mirror Mg is fluctuated on the time axis as illustrated in FIG. of
The read speed at the time of reading each of the primary color signals in the frame sequential three primary color signals from the storage devices 41 to 46 storing the simultaneous signals of the three primary color signals shown in (c) to (e) is varied. The figure shows a state in which the reflecting mirror Mg is changed in correspondence with the time fluctuation of the reciprocating rotation operation period. In this manner, the reading speed at the time of reading each primary color signal in the three sequential primary color signals is changed in accordance with the fluctuation in time of the reciprocating rotation operation period of the oscillating reflecting mirror Mg, and the sequential reading is performed. 9 shows the case where the respective primary color signals of the three primary color signals of are displayed in the state shown in FIG. 9F so that the display image has no shape distortion.

Also in the case of FIG. 9 described above, the light intensity of the optical information corresponds to the change mode of the reading speed when reading each primary color signal among the three frame primary color signals from the storage devices 41 to 46 described above. The unevenness in brightness (shading) that changes in the display image due to the change is changed in accordance with the changing mode of the speed of the oscillating reflecting mirror Mg on the time axis. The amplitude of each primary color signal in the frame sequential three primary color signals read from the storage devices 41 to 46 can be changed according to the reading speed of each primary color signal in the primary color signals.
Of course, this can be solved by supplying the amplitude control signal from the write / read controller 4 to the output regulator 69 shown in FIG. 5 via the line 68.

[0059]

As is apparent from the above-described detailed description, the swing reflector for performing the reciprocating swing operation at the swing period corresponding to the vertical scanning period of the original image signal to be displayed. Is set to be larger than the vertical blanking period of the original image signal to be displayed, so that the backward rotation operation time in the swing reflecting mirror is increased. The time-axis-compressed image signal is generated from the original image signal so that the part of the image signal during the period other than the vertical blanking period can be accommodated within the forward rotation time of the oscillating reflector shortened with , Generating optical information linearly aligned in a specific direction in a predetermined direction by using the image signal, and transmitting the optical information to the swing reflecting mirror during the forward turning operation period in the swing reflecting mirror. The vertical scanning cycle of the original image signal that is given or displayed The reciprocating rotation operation time of the oscillating reflecting mirror that performs reciprocating rotation operation in a corresponding oscillation cycle is set to be larger than the vertical blanking period of the original image signal to be displayed. In addition, all the image signals during the period excluding the vertical blanking period are accommodated within the forward rotation operation time of the oscillating reflecting mirror shortened with the increase of the backward rotation operation time in the oscillating reflecting mirror. As described above, an image signal that is time-axis-compressed with respect to the original image signal is generated, and the image signal is used to generate optical information that is linearly aligned in a specific direction in a predetermined direction. Information is given to the swing reflecting mirror during the forward turning operation period of the swing reflecting mirror, and the forward turning movement of the swing reflecting mirror is performed within the backward turning operation time of the swing reflecting mirror. Make sure that all of the same image signals used for display are accommodated within the working time An image signal that is time-axis compressed is generated for the image signal, and optical information that is linearly arranged in a direction opposite to a specific direction in a predetermined direction by the image signal is generated, and the optical information is generated. The original image which is given to the swing reflecting mirror during the backward rotation operation period of the swing reflecting mirror, and the forward rotation operation time and the return operation time of the swing reflecting mirror are respectively displayed. The signal is set to be equal to the vertical scanning period of the signal, and is specified in a direction predetermined by the image signal of the n-th vertical scanning period in the original image signal within the forward rotation operation time of the swing reflecting mirror described above. Optical information that is linearly aligned in any direction is given to the oscillating reflecting mirror during the forward turning operation of the oscillating reflecting mirror, and the optical information is returned to the oscillating reflecting mirror. Within the time, the n + 1th vertical run in the original image signal The image signal of the scanning period causes the optical information to be arranged linearly in the direction opposite to the specific direction in the predetermined direction, and the optical information is oscillated during the backward rotation operation period in the oscillating reflecting mirror. When applied to a reflecting mirror or displaying a color image by image signals of three primary colors in a frame sequential manner, the oscillating reflecting mirror is reciprocally rotated at a cycle twice the vertical scanning cycle of each primary color signal. Occasionally, the optical information based on the image signal of each of the frame sequential primary color image signals arranged continuously on the time axis for each vertical scanning period is deflected during forward and backward movements of the oscillating mirror. , The optical information generated linearly aligned in a specific direction in a predetermined direction by the image information is supplied to the oscillating reflecting mirror, while the surface arranged continuously on the time axis. Light from image signals of each primary color image signal for each vertical scanning period When the information is deflected during the forward and backward movements of the oscillating reflecting mirror, the optical information is linearly arranged in a direction opposite to the specific direction in the above-described predetermined direction to generate the oscillating motion. In addition to giving to the reflecting mirror, the distortion of the shape caused in the image by the non-linearity of the displacement of the oscillating reflector on the time axis, in correspondence with the non-linearity of the displacement of the oscillating reflector on the time axis, Even if the time position where the optical information is given to the oscillating reflector is changed as described above, it is eliminated so that shading does not occur in the image. Since the intensity of the optical information supplied to the oscillating reflecting mirror is changed in correspondence with the non-linearity of the displacement of the moving reflecting mirror on the time axis, the display device of the present invention is expensive. The structure can be changed without using a light deflection device. According to the present invention, a single oscillating reflecting mirror can be used to easily provide a small-sized display device having good characteristics and no shading or the like in shape or brightness of a displayed image. The above-mentioned conventional problems can be easily solved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a display device of the present invention.

FIG. 2 is a block diagram of a part of a constituent circuit.

FIG. 3 is a block diagram of part of a constituent circuit.

FIG. 4 is a waveform diagram for explaining a configuration principle and an operation principle.

FIG. 5 is a perspective view of an embodiment of the display device of the present invention.

FIG. 6 is a block diagram of a part of a constituent circuit.

FIG. 7 is a waveform diagram for explaining a configuration principle and an operation principle.

FIG. 8 is a waveform diagram for explaining a configuration principle and an operation principle.

FIG. 9 is a waveform diagram for explaining a configuration principle and an operation principle.

FIG. 10 is a waveform diagram for explaining a configuration principle and an operation principle.

FIG. 11 is a perspective view of an example of a conventional display device.

FIG. 12 is a diagram showing a configuration example of a light-light conversion element.

[Explanation of symbols]

REA ... Light emitting element array, Mg ... Oscillating reflector, SLM ...
Light-light conversion element, LS ... Read light source, PBS ... Polarization beam splitter, Lp ... Projection lens, S ... Screen, 1 ... Signal source, 2 ... Control section, 4 ... Write / read control section, 5 ... Address signal generation Part, 7, 18, 30-32 ...
Signal switcher 10, 11, 41 to 46 ... Storage device, 27
... 29 ... 3 primary color signal simultaneous signal input terminals, 30 to 32
... Signal changer, 41-46 ... Storage device, 69 ... Output adjuster,

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 13, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

However, in the above-mentioned proposed device, there is a problem that the light intensity modulation operation by the pixel information performed in the light modulator of the device is slow, and a solution thereof has been demanded. Information on pixels corresponding to the respective light emitting elements is supplied to the N light emitting elements in the light emitting element array in which the N light emitting elements corresponding to the N pixels are linearly arranged. Then, the N light emitting elements in the light emitting element array are caused to emit light simultaneously over the period, and the light emitting elements in the light emitting element array are arranged in a direction orthogonal to the alignment direction of the light emitted from the light emitting elements. A light-to-light conversion element configured to simultaneously deflect emitted light, the deflected light including at least a photoconductive layer member and a light modulation material layer member between two electrodes. It is imaged on the photoconductive layer in the light -
FIG. 1 in which read light is given to the light conversion element so that the image information read from the light-light conversion element is displayed on the screen.
1 proposed a display device.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

In FIG. 11, N REAs (however, N
Is a natural number greater than or equal to 2 and corresponds to N pixels (however, N
Is a light emitting element array in which light emitting elements of a natural number of 2 or more) are linearly arranged, and the light emitting element array REA
The writing light emitted from the N light-emitting elements can emit light at the same time for a predetermined period with the emission intensity according to the information of N pixels on one straight line in the image to be displayed. Is done. That is, when the image information to be displayed is supplied from the signal source of the image information to the display device as a time-series image signal, for example, it is output from the signal source of the image information. The N pixel information in the generated time-series image signal is converted into a simultaneous signal by a serial / parallel conversion circuit (for example, a shift register) and supplied to the light emitting element array REA. The N light fluxes emitted from the N light emitting elements in the light emitting diode array REA are intensity-modulated by the N pixel information,
The light enters the optical deflecting device using the swing reflecting mirror Mg via.
Since the oscillating reflector Mg is oscillated in the direction of the arrow in the figure at a predetermined cycle, the light flux incident on the oscillating reflector Mg moves at a constant moving speed from the top to the bottom of the light-light conversion element SLM. Is repeatedly projected onto the light-light conversion element SLM, and the light is imaged as writing light on the photoconductive layer member of the light-light conversion element (spatial light modulation element) SLM. Thus, the image information to be displayed is written in the light-light conversion element SLM.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction content]

The above-described light emitting element array REA is intensity-modulated by N pixel information on one straight line in an image to be displayed by N light emitting elements linearly arranged. The luminous flux is emitted for a predetermined period of time, but after the lapse of the predetermined period of time described above, another N lines on one straight line in the image to be displayed are displayed. The light flux whose intensity is modulated by the pixel information of is radiated over a predetermined period, and the intensity is modulated by N pieces of image information on different straight lines in the image to be displayed. The light of the state is radiated one after another for a fixed period of time, whereby the light-light conversion element S
Bright writing light will be provided on the LM. As the light-light conversion element SLM used in the display device shown in FIG. 11, for example, as illustrated in FIG. 12, a transparent substrate BP1 and a transparent electrode Et1.
Even a so-called reflection type light-to-light conversion element, which is configured by laminating a photoconductive layer member PCL, a dielectric mirror DML, a light modulation material layer member PML, a transparent electrode Et2, and a transparent substrate BP2. Alternatively, a transmissive light-to-light conversion element (not shown) may be used.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

The structure and operation of the light-light converting element SLM described above will be described below with reference to FIG. In the light-to-light conversion element SLM, the transparent electrodes Et1 and Et2 described above are composed of thin films of a transparent conductive material, and the photoconductive layer member PCL is made of a material exhibiting photoconductivity in the wavelength range of light used. Composed. Also,
As the dielectric mirror DML, a well-known type configured as a multilayer film so as to be able to reflect light in a predetermined wavelength band can be used. Furthermore, as the light modulation material layer member PML, the applied electric field strength can be used. It is said that a light modulation material that changes the state of light in accordance with the above, for example, a crystal having an electro-optical effect, a liquid crystal exhibiting birefringence characteristics, and other light modulation material layer members are used. Further, in FIG. 12, E is a power source for applying a predetermined voltage between the transparent electrodes Et1 and Et2.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

WL in FIG. 12 is made incident from the substrate BP1 side in the light-to-light conversion element SLM, and is photoconductive layer member PCL.
The writing light WL focused on the writing light WL is intensity-modulated by the information to be displayed. Therefore, in the display device shown in FIG. 11, the transparent substrate BP in the light-light conversion element SLM in which a predetermined voltage is supplied from the power source E between the transparent electrodes Et1 and Et2.
When N writing light fluxes, which are intensity-modulated by the image information reflected by the oscillating reflecting mirror Mg, are condensed from the 1 side by the lens L on the photoconductive layer member PCL,
Photoconductive layer member PCL of the portion where the writing light flux of the book is condensed
The electric resistance value of N changes according to the amount of light applied, and at the boundary between the photoconductive layer member PCL and the dielectric mirror DML, the N pieces of which the intensity is modulated by the image information to be displayed as described above. A charge image corresponding to the irradiation light amount by the writing light is formed well, and as a result, the light modulation material layer member PML of the light-light conversion element SLM is provided at the boundary between the photoconductive layer member PCL and the dielectric mirror DML. An electric field based on the formed N charge images is applied.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

LS in FIG. 11 is a light source for reading light,
Read-out light R emitted from the above-mentioned read-out light source LS
When L enters the polarization beam splitter PBS, the S-polarized light component of the read light RL is reflected by the polarization beam splitter PBS toward the read side of the light-light conversion element SLM, and the light-light conversion element SLM is read. The light enters from the transparent substrate BP2 on the side. As described above, the light-light conversion element S
The readout light RL incident from the transparent substrate BP2 side of the LM is, as described above with reference to FIG. 12, the transparent substrate BP2 → the transparent electrode Et2 → the light modulation material layer member PML → the dielectric mirror DM.
The reflected light of the read light that reaches the dielectric mirror DML by the path of L and is reflected there is dielectric mirror DML → light modulation material layer member PML → transparent electrode Et2 → transparent substrate BP2 →
The light is emitted from the light-to-light conversion element SLM along the path.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

[0010]

Now, as in the display device described with reference to FIG. 11, optical information linearly arranged in a predetermined direction is converted by the optical deflecting device using the oscillating reflecting mirror Mg. When the light is deflected in the direction orthogonal to the direction in which the optical information is arranged, the oscillating reflection mirror Mg is moved forward in the image signal period (video signal period) of the image signal to be displayed. A normal display image cannot be displayed on the screen S unless the movement is performed and the backward rotation movement is performed during the vertical blanking period. That is,
The oscillating reflector Mg performs forward rotation movement during the image signal period (video signal period) of the image signal to be displayed, and also reverse movement movement during the vertical blanking period. However, when the image signal to be displayed now is, for example, as shown in FIG. 4 (a), the oscillating reflecting mirror Mg is Corresponding to the image signal period (video signal period) and the vertical blanking period in the image signal to be displayed, the reciprocating rotation operation as shown in FIG. 4B is performed. Required to do.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tetsuji Suzuki 3-12 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa Prefecture, Japan Victor Company of Japan, Ltd. (72) Inventor Reiji Futami, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama 12th in Victor Company of Japan (72) Inventor Ryusaku Takahashi 3-chome Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa Prefecture 12th Place in Victor Company of Japan (72) Hiroyuki Bonde 3 Moriya-cho, Kanagawa-ku, Kanagawa 12-chome, Nihon Victor Co., Ltd. (72) Inventor Tsutomu Matsumura 3--12 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa Pref., Nihon Victor Co., Ltd.

Claims (6)

[Claims] 1. An oscillating reflector for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the arrangement of the optical information is provided. In a display device in which the deflected light is made incident on a light-to-light conversion element configured to include at least a photoconductive layer member and a light modulation material layer member between two electrodes, a display target is displayed. The reciprocating rotation operation time in the oscillating reflecting mirror, which performs reciprocating rotation operation at the oscillation cycle corresponding to the vertical scanning cycle of the original image signal being displayed, is set to the original image signal to be displayed. The vertical blanking is set larger than the vertical blanking period and shortened with the increase in the backward rotation operation time of the oscillating reflector, and within the forward rotation operation time of the oscillating reflector. The original image signal so that the part of the image signal during the period excluding the period is contained The optical information generated by linearly arranging in a specific direction in the predetermined direction is generated by the image signal subjected to the time axis compression, and the optical information is generated during the forward rotation operation period in the swing reflecting mirror. A display device designed to be applied to an oscillating mirror. 2. An oscillating reflecting mirror for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the arrangement of the above-mentioned optical information is provided. In a display device in which the deflected light is made incident on a light-to-light conversion element configured to include at least a photoconductive layer member and a light modulation material layer member between two electrodes, a display target is displayed. The reciprocating rotation operation time in the oscillating reflecting mirror, which performs reciprocating rotation operation in a rocking cycle corresponding to the vertical scanning cycle of the original image signal being displayed, is set to the original image signal to be displayed. It is set larger than the vertical blanking period, and the vertical return is set within the forward rotation operation time of the oscillating reflector, which is shortened as the backward rotation operation time of the oscillating reflector increases. The original image signal is received so that all of the image signals during the line period are not included. Signal generated by linearly arranging in a specific direction in the above-mentioned predetermined direction by an image signal subjected to time-axis compression for the signal No. The same image signal as that applied to the oscillating reflecting mirror during the period and used for display during the backward turning operation time of the oscillating reflecting mirror described above. Of the original image signal so that all of the image signal of the image signal is subjected to time-axis compression to generate optical information linearly arranged in a direction opposite to the specific direction in the predetermined direction described above. A display device adapted to give the above-mentioned optical information to the swinging reflector during the backward rotation operation period of the swinging reflector. 3. An oscillating reflector for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the arrangement of the above-mentioned optical information, wherein the oscillating reflector is used. In the display device in which the deflected light is incident on the light-to-light conversion element including at least the photoconductive layer member and the light modulation material layer member between the two electrodes, the above-mentioned oscillation The forward rotation operation time and the backward operation time of the reflecting mirror are set to be equal to the vertical scanning cycle of the original image signal to be displayed, and the forward rotation operation time of the swing reflecting mirror is set. In the inside, optical information linearly arranged in a specific direction in a predetermined direction is generated by the image signal in the n-th vertical scanning period in the original image signal, and the optical information is forward-rotated in the swing reflecting mirror. Giving to the rocking reflector during the production period, Further, within the above-described backward rotation operation time of the oscillating reflecting mirror, the image signal of the (n + 1) th vertical scanning period of the original image signal linearly moves in a direction opposite to the specific direction in the predetermined direction. A display device which generates optical information arranged in line with each other and gives the optical information to the swing reflecting mirror during the backward rotation operation period of the swing reflecting mirror. 4. An oscillating reflecting mirror for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the arrangement of the above-mentioned optical information is provided. In a display device in which the deflected light is made incident on a light-to-light conversion element that is configured to include at least a photoconductive layer member and a light modulation material layer member between two electrodes, a frame sequential 3 The oscillating reflecting mirror is reciprocally rotated at a cycle twice as long as the vertical scanning cycle of one primary color signal in the primary color image signal, and each of the frame sequential primary colors arranged continuously on the time axis. When the optical information based on the image signal for each vertical scanning period of the image signal is deflected when the swing reflecting mirror is rotated forward and backward, a straight line is formed in a specific direction predetermined by the image information. Light information that is lined up in a When the optical information based on the image signals of the image signals of the primary colors of the frame-sequential primary colors which are continuously arranged on the intermediate axis is deflected during the backward rotation of the oscillating reflecting mirror, A display device which generates optical information linearly aligned in a direction opposite to a specific direction in the predetermined direction and gives the optical information to the oscillating reflector. 5. An oscillating reflecting mirror for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the arrangement of the above-mentioned optical information is provided. In a display device in which the deflected light is made incident on a light-to-light conversion element configured to include at least a photoconductive layer member and a light modulation material layer member between two electrodes, a frame sequential 3 Means for reciprocally rotating the oscillating reflecting mirror in a cycle twice as long as the vertical scanning cycle of one primary color signal in the image signals of the primary colors, and image distortion due to non-linearity of displacement of the oscillating reflecting mirror on the time axis. Means for giving optical information to the oscillating reflector at a time position that does not cause the above-mentioned problem, and the above-mentioned light intensity of the optical information in correspondence with the nonlinearity of the displacement of the oscillating reflector on the time axis, so that shading occurs in the image. Means to change it so that it does not occur, The optical information of the image signal of each of the frame-sequential primary colors that is deflected during the forward and backward movements of the oscillating reflecting mirror is the optical information based on the image signal for each vertical scanning period. The optical information of the image signal of each frame sequential primary color image signal for each vertical scanning period, which is deflected during the backward rotation of the oscillating reflecting mirror, is set in advance as described above. A display device, which is arranged so as to be linearly aligned in a direction opposite to a specific direction in a defined direction. 6. An oscillating reflecting mirror for deflecting light information linearly arranged in a predetermined direction in a direction orthogonal to the direction of the arrangement of the above-mentioned optical information is provided. In a display device in which the deflected light is incident on a light-to-light conversion element including at least a photoconductive layer member and a light modulation material layer member between two electrodes, vertical scanning of an image signal is performed. A means for reciprocally rotating the oscillating reflector in correspondence with the cycle, and optical information for the oscillating reflector at a time position that does not cause image distortion due to nonlinearity of displacement of the oscillating reflector. A display device comprising: a means for providing the light information and a means for varying the light intensity of the light information with the non-linearity of the displacement of the oscillating reflector on the time axis so that shading does not occur in the image. .