JP2897588B2 - Display device - Google Patents

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 As a display device capable of displaying an image having a high resolution, a display device using a spatial light modulator has been conventionally proposed. A display device using a spatial light modulation element forms an image of light containing image information to be displayed on a photoconductive layer member of the spatial light modulation element, so that the spatial light modulation element can display the light. The image information is written, and the spatial light modulation element is provided with readout light to read out the image information and obtain a display image.

[0003]

In a display device using the above-mentioned spatial light modulator, means for writing light having image information to be displayed into the spatial light modulator includes, for example, a cathode ray modulator. Although a tube, a light emitting element array (for example, see Japanese Patent Application Laid-Open No. Hei 4-25290) and the like have been used, deflection distortion in a cathode ray tube, variation in the arrangement of light emitting elements in a light emitting element array, and spatial light modulation elements are displayed on a spatial light modulation element. In order to project an image in a state where no image distortion occurs due to a distortion of a lens provided for imaging light having image information that is present, a deflection distortion by an optical deflector, etc. on the screen, the above-described optical writing is performed. As a means, a device having a complicated optical system is required, and the problem is that the display device becomes expensive and large, which requires a measure for improvement. It was.

[0004]

The present invention comprises a charge-coupled circuit for converting a time-series image signal into a two-dimensional image signal array, and at least a light modulating material layer member between two electrodes. A display information output element comprising: a spatial light modulation element section that has been driven; and a unit that drives the spatial light modulation element section by a two-dimensional image signal output from the charge-coupled circuit section; Means for providing readout light to the spatial light modulation element section of the display information output element, and forming output light emitted from the spatial light modulation element section of the display information output element containing image information on a screen. A display device provided with a projection optical system, a charge-coupled circuit unit for converting a time-series image signal into a two-dimensional image signal array, and at least a light modulation material layer member between two electrodes. A display information output element comprising: a spatial light modulation element unit; and a unit for driving the spatial light modulation element unit by a two-dimensional image signal output from the charge-coupled circuit unit; Means for providing read light to the spatial light modulation element section in the information output element;
A projection optical system for forming an image of output light emitted from the spatial light modulation element section of the display information output element containing image information on a screen, and between a light source of readout light and the screen. A display device provided with an optical filter whose transmission wavelength range is switched and changed in synchronization with the color switching cycle of the field sequential three primary color signals input to the display information output element in the optical path, and a three-color synthesis / decomposition. The optical system is optically coupled to the three-color combining / separating optical system so that image information of each color light of the three primary colors can be individually supplied to the three-color combining / separating optical system. A charge-coupled circuit for converting into a two-dimensional image signal array, a spatial light modulator element including at least a light-modulating material layer member between two electrodes, and a signal output from the charge-coupled circuit. Second Means for driving the spatial light modulation element unit with a typical image signal, three display information output elements respectively provided, and a spatial light modulation element unit in the three display information output elements, Means for providing readout light of a specific primary color via the three-color combining / separating optical system, and output light emitted from the spatial light modulation element section of each display information output element in a state containing image information. Means for synthesizing an image with a three-color synthesis / decomposition optical system;
A display device including a projection optical system for forming an image of the light emitted from the color combining / separating optical system on a screen, and a pixel array aligned in one of two orthogonal directions in a two-dimensional image. For each time-series image signal, individual divided time-series signals in a divided time-series signal in a state where the time-series image signal is divided at predetermined time lengths on the time axis are individually supplied. In some cases, a plurality of charge-coupled circuit sections for converting the divided time-series signals into a two-dimensional image signal array, and spatial light including at least a light modulation material layer member between two electrodes A display information output element comprising: a modulation element section; and a means for driving the spatial light modulation element section by a two-dimensional image signal output from the charge coupled circuit section; and the display information output element described above. Space light in A display for providing readout light to the modulation element section, and a projection optical system for forming an image of output light emitted from the spatial light modulation element section of the display information output element containing image information on a screen. For each of the sequential time-series image signals corresponding to the pixel arrangement arranged in one of the two orthogonal directions in the two-dimensional image, the time-series image signal is determined on the time axis. When individual divided time-series signals in a divided time-series signal in a state of being divided for each time length are individually supplied, a plurality of divided time-series signals are converted into a two-dimensional image signal array for each of the divided time-series signals. The charge coupled circuit section, the spatial light modulation element section including at least the light modulating material layer member between the two electrodes, and the two-dimensional image signal output from the charge coupled circuit section described above. Spatial light change A display information output element comprising means for driving the element section; a means for providing read light to the spatial light modulation element section in the display information output element; and a spatial light modulation element section in the display information output element. A projection optical system for imaging output light emitted in a state containing image information on a screen, and in the optical path between a light source for readout light and the screen, input to the display information output element. Face sequential 3
A display device provided with an optical filter whose transmission wavelength range is switched and changed in synchronization with a color switching period of a primary color signal, a three-color combining / separating optical system, and the above-described three-color combining of image information of each color light of the three primary colors The sequential time when the optical system is optically coupled to the three-color combining / separating optical system so that it can be individually supplied to the separating optical system, and corresponds to a pixel array arranged in one of two orthogonal directions in a two-dimensional image. For each sequential image signal, when the individual divided time-series signals in the divided time-series signals in a state in which the time-series image signal is divided for each predetermined time length on the time axis are individually supplied. A plurality of charge-coupled circuit units for converting the divided time-series signals into a two-dimensional image signal array, and a spatial light modulation element including at least a light modulation material layer member between two electrodes Part and the charge-coupled circuit part described above. And means for driving the spatial light modulator portion described above by two-dimensional image signal force, and three display information output device comprises respectively, and the three
Means for providing readout light of a specific primary color to the spatial light modulation element section in each of the display information output elements via the three-color combining / separating optical system, and spatial light modulation in each of the display information output elements. The device includes means for combining output light emitted from the element section while containing image information with a three-color combining / decomposing optical system, and a projection optical system for forming an image of the light emitted from the three-color combining / separating optical system on a screen. Display device, and 1 in two orthogonal directions in a two-dimensional image.
For each sequential time-series image signal corresponding to the pixel array arranged in one direction, a plurality of divisions obtained by dividing the time-series image signal at predetermined time lengths on the time axis A plurality of signal processing circuits for generating a plurality of sets of parallel image signals based on the time-series signals, and a specific set of parallel image signals among the plurality of sets of parallel image signals output from the signal processing circuit are individually A plurality of charges having a function of transferring the parallel image signal in the direction of the pixel array orthogonal to the direction of the pixel array in one direction when supplied to the pixel array. A coupling circuit section, a spatial light modulation element section including at least a light modulation material layer member between two electrodes, and the space described above by a two-dimensional image signal output from the charge coupling circuit section. Means for driving the light modulation element unit A display information output device and a,
Means for providing readout light to the spatial light modulation element in the display information output element, and image formation of output light emitted from the spatial light modulation element in the display information output element while containing image information on a screen Display device provided with a projection optical system for causing
For each sequential time-series image signal corresponding to a pixel array arranged in one direction in the direction, the time-series image signal is obtained by dividing the time-series image signal by a predetermined time length on a time axis. A plurality of signal processing circuits for generating a plurality of sets of parallel image signals based on the plurality of divided time-series signals; and a specific one of the plurality of sets of parallel image signals output from the signal processing circuit.
When a set of parallel image signals is individually supplied, a component having a function of transferring the parallel image signals in a pixel array direction orthogonal to the pixel array direction in the one direction is provided. A plurality of charge-coupled circuit sections provided;
A spatial light modulating element configured to include at least a light modulating material layer member between two electrodes, and the spatial light modulating element based on a two-dimensional image signal output from the charge coupled circuit. A display information output element comprising: a driving means; a means for providing readout light to the spatial light modulation element in the display information output element; and image information from the spatial light modulation element in the display information output element. A projection optical system for forming an image on the screen of the output light emitted in a state in which the display information is output to the display information output element in the optical path between the light source of the readout light and the screen. A display device provided with an optical filter whose transmission wavelength range is switched and changed sequentially in synchronization with the color switching period of the three primary color signals, and one of the two directions in two orthogonal directions in a two-dimensional image A plurality of divided time-series signals obtained by dividing the time-series image signal by a predetermined time length on a time axis for each of the sequential time-series image signals corresponding to the pixel array A plurality of signal processing circuits for generating a plurality of sets of parallel image signals, a three-color synthesis / decomposition optical system,
A plurality of sets output from the signal processing circuit are optically coupled to the three-color combining / separating optical system so that image information of each of the three primary color light beams can be individually supplied to the three-color combining / separating optical system. When a specific set of parallel image signals among the parallel image signals is individually supplied, the parallel image signals are transferred in a pixel array direction orthogonal to the pixel array direction in the one direction. A plurality of charge-coupled circuit sections having components having functions, a spatial light modulation element section including at least a light modulation material layer member between two electrodes, and the above-described charge-coupled circuit Means for driving the spatial light modulating element section with a two-dimensional image signal output from the section, and three display information output elements each provided with: Light modulation Means for providing readout light of specific primary colors to the sub-units via the three-color combining / separating optical system described above, and a state in which image information is included from the spatial light modulation element unit in each of the display information output elements described above. Provided is a display device comprising: means for combining emitted output light with a three-color combining / separating optical system; and a projection optical system for forming light emitted from the three-color combining / separating optical system on a screen.

[0005]

A charge-coupled circuit unit for converting a time-series image signal into a two-dimensional image signal array, and a spatial light modulation element unit including at least a light modulation material layer member between two electrodes. And a means for driving the spatial light modulation element section with a two-dimensional image signal output from the charge-coupled circuit section. The output image information does not have distortion which has been a problem in the conventional device, and therefore, a good display image can be projected on a screen by a device having a simple configuration. Further, for each sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in the two-dimensional image, the time-series image signal is converted into a predetermined signal on a time axis. A display including individual charge-coupled circuit units in a plurality of charge-coupled circuit units for converting individual divided time-series signals in a divided time-series signal in a state divided for each time length into a two-dimensional image signal array By supplying the information to the information output element, the light output from the display information output element can be increased, and furthermore, the sequential arrangement corresponding to the pixel array arranged in one of two orthogonal directions in the two-dimensional image is achieved. For each time-series image signal, based on a plurality of divided time-series signals obtained by dividing the time-series image signal for each predetermined time length on the time axis,
A plurality of sets of parallel image signals are generated by a plurality of signal processing circuits, and a specific set of parallel image signals in the plurality of sets of parallel image signals output from the signal processing circuit are converted into the one direction described above. By supplying to a display information output element configured with a plurality of charge-coupled circuit units having a component having a function of transferring in the pixel array direction orthogonal to the pixel array direction, As a driving pulse used for the operation of the display information output element, a pulse having a long repetition period can be used, and the light output from the display information output element can be increased.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific contents of a display device according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 3 are block diagrams of a display device according to an embodiment of the present invention. FIGS. 4 and 6 are perspective views showing a schematic configuration of a display information output element used in the display device of the present invention. FIG. 7 is a diagram illustrating a configuration example of an image signal supply circuit of a display information output element. 1 to 3, PBS is a polarizing beam splitter, L is a projection lens, S is a screen, E is a bias power supply,
DIO in FIGS. 1 and 3 and DIOr, DIOg, and DIOb in FIG. 2 each include a charge-coupled circuit unit that converts a time-series image signal into a two-dimensional image signal array, and a circuit between the two electrodes. A spatial light modulating element configured to include at least a light modulating material layer member; and a unit configured to drive the spatial light modulating element with a two-dimensional image signal output from the charge coupled circuit. The display information output element is provided. CDP in FIG. 2 is a three-color combining / separating optical system, F in FIG.
Is a signal processing circuit, DA is a drive circuit, and 1 in FIGS. 1 and 3 and 1r, 1g, and 1b in FIG. 2 are input terminals of image signals to be displayed.

Here, first, the pixel is configured so as to be capable of outputting planar optical information by arranging optical information corresponding to each pixel so as to have a two-dimensionally fixed arrangement mode. Display information output element DIO (DIOr,
The specific configuration of DIOg, DIOb) will be described with reference to FIGS. 4 and 6, 2 is a transparent substrate, 3 is a transparent electrode, 4 is a light modulating material layer member, 5 is a dielectric mirror layer, 6 is a light shielding layer, and 7 is a silicon substrate constituting a CCD reading layer ( CCD readout layer), 8 is a charge-coupled circuit for converting a time-series image signal into a two-dimensional image signal array.
(DIOr, DIOg, DIOb), silicon substrate (CCD readout layer) constituting CCD readout layer
7 and a charge-coupled circuit unit 8 for converting a time-series image signal into a two-dimensional image signal array constitute a charge-coupled circuit part. As the configuration of the charge-coupled circuit portion, for example, a well-known buried channel type CCD structure, a well-known surface channel type CCD structure, or, for example, the above-mentioned buried channel type CCD structure and a surface channel type CCD structure Any of the configurations with a structure in which the above is mixed may be adopted.

The silicon substrate (CCD readout layer) 7 constituting the aforementioned CCD readout layer, the light-shielding layer 6, the dielectric mirror layer 5, the light modulating material layer member 4, and the transparent electrode 3 It constitutes a spatial light modulator. Each of the above-mentioned layers is laminated on the transparent substrate 2 to constitute a display information output element DIO. The display information output element DIO shown in FIG. 4 and FIG.
Although the light-shielding layer 6 is provided between the CCD and the CCD readout layer 7, the display information output element DIO having a structure in which the light-shielding layer 6 is removed may be used. The aforementioned display information output element DIO (DIOr, DI
Og, DIOb), the transparent electrode 2 is made of a thin film of a transparent conductive material, and the light modulating material layer member 4 has a light state (polarization of light) according to the applied electric field intensity. Light modulating material that changes the state, the optical rotation state, and the light scattering state) When, for example, a nematic liquid crystal is used as the light modulating material, the light modulating material is set to a TN mode, a hybrid field effect (HFE) mode, a guest host (GH).
It may be operated in a mode such as a mode, an electric field induced birefringence mode (vertical alignment, horizontal alignment), a dynamic scattering mode, a phase transition mode, or the like. In particular, by using a vertically aligned nematic liquid crystal in the electric field induced birefringence mode, the dependence on the wavelength of the readout light is reduced, and a high contrast ratio can be obtained. Further, a smectic liquid crystal or a ferroelectric liquid crystal may be used. Lithium niobate, BSO
電 気 which can also use an electro-optic crystal such as
Further, the dielectric mirror layer 5 is of a well-known type configured as a multilayer film (for example, a multilayer film of SiO2 / TiO2) so as to reflect light in a predetermined wavelength band. Further, the display information output elements DIOr, shown in FIG.
As the dielectric mirror layer 5 in DIOg and DIOb, for example, a red / red
It is desirable to use one configured to exhibit good reflectance characteristics with respect to read light in the green and blue light wavelength regions.

First, the charge-coupled circuit section 8 in the display information output element DIO (DIOr, DIOg, DIOb) illustrated in FIG. 4 is provided on a silicon substrate 7 constituting a CCD readout layer with an embedded channel CCD. It has a structure in which a serial register and a CCD surface channel / parallel structure are configured, and the time-series image signal supplied to the input terminal 1 (1r, 1g, 1b) of the time-series image signal is Are sequentially transferred one line at a time in the X direction in the figure by the serial clock signal supplied to the input terminal 9 and loaded into the embedded channel CCD serial register. Next, the entire image information for one line loaded into the embedded channel CCD serial register is transferred to the first stage of the CCD surface channel parallel structure by the parallel transfer clock signal supplied to the input terminal 10. (Y direction in the figure).

The image signal for one line after the image signal for one line is transferred to the CCD surface channel parallel structure by repeating the above-described operation. When an image signal for one frame is transferred to the CCD surface channel parallel structure, all the gates are opened at the same time, and thus the CCD surface channel parallel structure is generated as described above. The charge pattern based on the image signal for one frame is transferred to the opposite side of the silicon substrate 7 constituting the CCD readout layer, and thereby the display information output elements DIO (DIOr, DIO) are transferred.
g, DIOb), an electric field pattern generated by the charge pattern transferred from the charge-coupled circuit section 8 to the opposite side of the silicon substrate 7 constituting the CCD readout layer is applied to the light modulation material layer member 4. Will be.

The display information output element D already described with reference to FIG.
In the charge coupled circuit unit 8 in the IO (DIOr, DIOg, DIOb), the input terminal 1 (1
r, 1g, 1b) are sequentially transferred one line at a time in the X direction in the figure by the serial clock signal supplied to the input terminal 9 to embed the channel CCD serial register. 5, the display information output element DIO (DIOr, DIOg, DIOb) illustrated in FIG. 5 divides its charge-coupled circuit unit 8 into a plurality of sections in the X direction. With such a structure, it is possible to simultaneously supply individual time-series image signals to the individual areas in the plurality of areas, and to increase the display rate without increasing the transfer rate. Elements DIO (DIOr, DIOg, DIOb) are obtained. In the block diagram shown in FIG. 5, reference numeral 1 denotes an input terminal for a time-series image signal, 14 denotes a serial-parallel conversion circuit, The time-series image signal supplied to the input terminal 1 is converted into a plurality of image areas A 1, A 2, A 3, and A 4 by the serial-parallel conversion circuit 14 as a parallel image signal. Display information output element DIO (DIO
r, DIOg, DIOb), the transmission paths 15 to 18 are provided to the individual input units provided corresponding to the plurality (N) of image areas A1, A2, A3, A4 (N = 4 in FIG. 5). Is entered via

The image information loaded from the serial / parallel conversion circuit 14 into the embedded channel CCD serial registers of the plurality of input sections divided in correspondence with the plurality of image areas A1, A2, A3, A4. Indicates that each input unit simultaneously transfers in the X direction by a serial clock signal, and the embedded channel CCD / serial register of each input unit causes a 1-bit transfer.
When the image information for one line is accumulated, the entire image information for one line is transferred to the first stage of the CCD surface channel parallel structure by the parallel transfer clock signal supplied to the input terminal 10 ( When the above operation is sequentially repeated and the image information for one frame is accumulated in the CCD surface channel parallel structure, the charge pattern by the image signal for one frame constitutes the CCD readout layer. Is transferred to the opposite side of the silicon substrate 7. By performing the above-described operation, the display information output element DIO (DIOr, DIOg, DIOb) illustrated in FIG. 5 can easily provide a multi-pixel display information output element without increasing the transfer rate. It can be realized. In addition. The display information output element DIO (DIOr, DIOr,
DIOg, DIOb) are also the display information output elements DIO (DIOr, DIOg, DI) of multiple pixels described above with reference to FIG.
As in the case of Ob), its charge-coupled circuit unit 8
It may have a structure in which a buried channel CCD serial register and a CCD surface channel parallel structure are formed on a silicon substrate 7 constituting a CD read layer. The combination structure of the embedded channel CCD / serial register and the CCD surface channel / parallel structure may be the reverse of the above.
A structure composed of any one of a CCD surface channel parallel structure may be used.

Next, the display information output elements DIO (DIOr, DIOg, DIOb) described with reference to FIGS.
Has a configuration in which charge transfer is performed in two orthogonal directions X and Y, whereas the display information output element DIO (DIO) illustrated in FIG.
(r, DIOg, DIOb) show a configuration example of a display information output element having a configuration in which the transfer direction of electric charges is only in the Y direction so that display information of a two-dimensional image can be output. The time series supplied to the input terminal 1 of the time-series image signal in FIG. 7 shown to help explain the configuration and operation of the display information output elements DIO (DIOr, DIOg, DIOb) illustrated in FIG. A typical image signal is converted by a serial / parallel conversion circuit 14 into a parallel image signal (corresponding to a plurality of image areas A1, A2, A3, A4, each area is time-series, and Signal), the parallel signal processing circuit 2
4 and is converted into a parallel image signal obtained by subjecting the parallel image signal to predetermined signal processing in the parallel signal processing circuit 24, and this is a display information output element DIO
(DIOr, DIOg, DIOb).

In FIG. 7, reference numeral 23 denotes an input terminal of a clock signal required for the operation of the parallel signal processing circuit 24. Reference numerals 24a1, 24a2, 24a3, and 24a4 denote display information output elements DIO (multiple pixels). DIOr, DIOg, DI
Ob) a plurality of (N) image areas A1, A2, A3, A4
(N = 4 in FIG. 7) is a signal processing block provided correspondingly. As the parallel signal processing circuit 24, for example, a circuit arrangement having a configuration as disclosed in JP-A-4-354418 can be used. Display information output device DI shown in FIGS. 6 and 7
In O (DIOr, DIOg, DIOb), a parallel transfer clock signal is supplied from an input terminal 10 to an input section to which a parallel image signal is supplied from the parallel signal processing circuit 24 described above.

Therefore, the display information output element DIO (DIO
r, DIOg, DIOb), the charge of each pixel by the parallel image signal supplied from the parallel signal processing circuit 24 is transferred to the CCD surface by the parallel transfer clock signal supplied from the input terminal 10. Transfer (Y direction) to the first stage of the channel / parallel structure. When the above operation is sequentially repeated and one frame of image information is accumulated in the CCD surface channel parallel structure, the charge pattern based on one frame of image signal constitutes the CCD readout layer of the silicon substrate 7. Moved to the other side of

In the display device illustrated in FIG.
When a time-series image signal to be displayed is supplied to the input terminal 1 of the display information output element DIO, the display information output element DIO ( As shown in FIG. 4, the light modulating material layer member 4 in the configuration shown in FIGS. 5 and 6 may be used as the display information output element. The electric field pattern corresponding to the two-dimensionally arranged image information generated by the charge pattern transferred from the charge-coupled circuit section 8 to the opposite side of the silicon substrate 7 constituting the CCD readout layer (supplied to the input terminal 1) Image information for one frame by a time-series image signal is
By the operation of the charge-coupled circuit section 8 and the silicon substrate 7 constituting the CCD readout layer, an electric field pattern corresponding to the image information converted into the two-dimensionally arranged image information is provided. When the reading light emitted from the reading light source LS is incident on the polarizing beam splitter PBS and the S-polarized light component is incident on the transparent substrate 2 side of the display information output element DIO from the polarizing beam splitter PBS, the reading is performed. The S-polarized light component of the light passes through the transparent electrode 3 and the light modulating material layer member 4 and then is reflected by the dielectric mirror layer 5 and passes through the light modulating material layer member 4 and the transparent electrode 3 again to display information. The light is emitted from the transparent substrate 2 side of the output element DIO.

As described above, the luminous flux of the reading light emitted from the display information output element DIO corresponds to one frame of image information based on the time-series image signal supplied to the input terminal 1 as described above. Since the light beam is a light beam that has reciprocated through the light modulating material layer member 4 in a state where an electric field due to a charge image is applied, the light beam is generated by the electric field corresponding to the image to be displayed as described above. The state of the polarization plane is changing. Display information output element DIO
Of the readout light emitted from the polarization beam splitter P
When incident on the BS, a P-polarized light component in the incident light is given from the polarizing beam splitter PBS to the projection lens L, which forms an image on the screen S,
An image to be displayed is displayed on the screen S.

Next, in the display device illustrated in FIG. 2, each primary color signal (red primary color signal, green primary color signal, and blue primary color signal) in the three primary color image signals is represented by three pieces of display information. Output elements DIOr, DIOg, DIOb (see FIG. 4,
The display information output elements may be configured as shown in FIGS. 5 and 6). The display information output elements are individually supplied to predetermined elements at input terminals 1r, 1g, and 1b. . That is, the input terminal 1r of the display information output element DIOr that outputs the display image information of the red primary color image is
A red primary color signal in a time-series image signal to be displayed is supplied, and a display information output element DIOg that outputs display image information of a green primary color image is displayed. A green primary color signal in a time-series image signal is supplied, and a display information output element DIOb that outputs display image information of a blue primary color image is input to an input terminal 1b of the display information output element DIOb. A blue primary color signal in the image signal is supplied.

The three display information output elements DIOr,
DIOg and DIOb are each supplied with a predetermined bias voltage from an individual bias power supply E. Therefore, each of the display information output elements DIOr, DI
As described above, the light modulating material layer members 4 of Og and DIOb have the charge generated by the charge pattern transferred from the charge coupled circuit section 8 to the opposite side of the silicon substrate 7 constituting the CCD readout layer. An electric field pattern corresponding to the image information arranged in a three-dimensional manner (each primary color image information for one frame based on a time-series image signal supplied to the input terminals 1r, 1g, 1b) is stored in the charge-coupled circuit unit 8 and the CCD readout layer. And an electric field pattern corresponding to each primary color image information in a state of being converted into each primary color image information in a two-dimensional arrangement by the operation with the silicon substrate 7 constituting.

On the other hand, when the readout light emitted from the readout light source LS is incident on the polarizing beam splitter PBS, the S-polarized light component is incident on the three-color combining / decomposing optical system CDP from the polarizing beam splitter PBS. . The three-color combining / decomposing optical system CDP reflects the red primary color light and passes the green primary color light and the blue primary color light through the dichroic mirror 12.
And a dichroic mirror 13 that reflects blue primary color light and passes green primary color light. Therefore, in the above-described three-color combining / decomposing optical system CDP, the read light of the red primary color light is transmitted to the transparent substrate 2 of the display information output element DIOr.
And the readout light of the green primary color light is made incident on the transparent substrate 2 side of the display information output element DIOg, and the readout light of the blue primary color light is made incident on the transparent substrate 2 side of the display information output element DIOb. Let it.

Each of the display information output elements DIOr, DIOg, DIOb for outputting the display image information of each of the primary color images described above.
The S-polarized light components of the reading light by the primary color lights incident on the display information output elements DIOr, DIOg,
After passing through the transparent electrode 3 and the light modulating material layer member 4 of DIOb, it is reflected by the dielectric mirror layer 5 and passes through the light modulating material layer member 4 and the transparent electrode 3 again, and each display information output element DIOr, DIOg and DIOb are individually injected from each transparent substrate 2 side. From the display information output element DIOr that outputs the display image information of the red primary color image in the luminous flux of the read light individually emitted from each of the display information output elements DIOr, DIOg, and DIOb as described above, the three-color combining / separating optics is used. The readout light of the red primary color light incident on the system CDP is reflected by the dichroic mirror 12 and is reflected by the polarization beam splitter PB.
It is incident on S.

The readout light of the green primary color light that has entered the three-color combining / separating optical system CDP from the display information output element DIOg that outputs the display image information of the green primary color image is transmitted to the dichroic mirror 13 and the dichroic mirror 12. Of the blue primary color light that has entered the three-color combining / decomposing optical system CDP from the display information output element DIOb that outputs the display image information of the blue primary color image after passing through both of them. Light is dichroic mirror 1
After being reflected by 3, the light is transmitted through the dichroic mirror 12 and is incident on the polarizing beam splitter PBS. The read light emitted from the display information output element DIOr as described above corresponds to one frame of image information based on the red primary color signal in the time-series image signal supplied to the input terminal 1r and being displayed. Since the light flux reciprocates through the light modulating material layer member 4 in a state where an electric field is applied by the charge image, the light flux corresponds to the red primary color image to be displayed as described above. The state of the polarization plane is changed by the electric field in the state.

The readout light emitted from the display information output element DIOg is used to output one frame of image information based on the green primary color signal in the time-series image signal to be displayed supplied to the input terminal 1g. Since the light flux reciprocates through the light modulating material layer member 4 in a state where the electric field by the corresponding charge image is applied, the light flux corresponds to the green primary color image to be displayed as described above. The state of the polarization plane is changed by the electric field in the state where the readout light is emitted from the display information output element DIOb and the readout light is supplied to the input terminal 1b. Since the light flux reciprocates through the light modulating material layer member 4 in a state in which an electric field by a charge image corresponding to one frame of image information based on a blue primary color signal in a sequential image signal is applied. The light beam is made to what state of the polarization plane by the electric field of the state correspond to the primary colors blue images that are subject to the display as described above is changing.
Each of the display information output elements DIOr, DIO
g, the luminous flux of each reading light individually emitted from DIOb is
When the light is incident on the polarizing beam splitter PBS while being combined by the three-color combining / decomposing optical system CDP, a P-polarized light component of the incident light is given from the polarizing beam splitter PBS to the projection lens L, and the projection lens L applies the light to the screen S. Then, a color image to be displayed is projected on the screen S.

Next, the display device illustrated in FIG. 3 will be described. In the display device illustrated in FIG.
An input terminal 1 of the display information output element DIO is supplied with a time-sequential color image signal of a frame sequential system from a signal processing circuit SDC. The signal processing circuit SDC includes an AD converter and a plurality of signal converters for performing signal processing for converting a time-series image signal supplied to the input terminal 11 into a time-series color image signal of a frame sequential method. Frame memories, DA
It is configured to include a converter, a control circuit, and the like. So,
A display information output element DIO to which a time-sequential color image signal of a frame sequential method is supplied from an input terminal 1 is supplied with an image signal for one frame sequentially and each primary color signal among three primary color signals. become.

As described above, when a time-sequential color image signal of a frame sequential method is supplied to the input terminal 1 of the display information output element DIO, a predetermined bias voltage is applied from the bias power source E. The light modulation material layer member 4 of the display information output element DIO (see FIG. 4) is transferred from the charge-coupled circuit section 8 to the opposite side of the silicon substrate 7 constituting the CCD readout layer as described above. An electric field pattern corresponding to the two-dimensionally arranged image information generated by the charge pattern (image information of one frame of a specific primary color based on a time-series image signal supplied to the input terminal 1) Silicon substrate 7 constituting CCD readout layer
With the above operation, an electric field pattern corresponding to the specific image information in a state converted into the specific primary color image information in the two-dimensional arrangement is given.

The read light emitted from the light source LS of the read light is supplied to a color filter F (for example, on a transparent disk such as glass, etc.) which is rotating in synchronization with the color image signal of the frame sequential by the drive circuit DA. Color filter disk provided with a color filter piece film that transmits light in the wavelength band of FIG.
Is transmitted to the polarizing beam splitter PBS, and is incident on the polarizing beam splitter PBS.
From the BS, an S-polarized light component of a specific primary color light is incident on the transparent substrate 2 side of the display information output element DIO. The S-polarized light component of the read light by the specific primary color light is
After passing through the light modulating material layer member 4 and reflected by the dielectric mirror layer 5, the light passes through the light modulating material layer member 4 and the transparent electrode 3 again and is emitted from the transparent substrate 2 side of the display information output element DIO. I do. The position where the color filter F is to be installed is not limited to the position shown in FIG. 3, but is provided so as to be located in the optical path between the light source LS of the reading light and the screen S. I just need to. In the implementation, the shapes of the filter pieces R, G, and B of the respective colors in the filter F should, of course, have a predetermined curved shape at the boundary between the filter pieces of the adjacent colors so that color mixing does not occur. is there.

As described above, the luminous flux of the readout light emitted from the display information output element DIO corresponds to one frame of image information based on the time-series image signal supplied to the input terminal 1 as described above. Since the light beam is a light beam that has reciprocated through the light modulating material layer member 4 in a state where an electric field due to a charge image is applied, the light beam is generated by the electric field corresponding to the image to be displayed as described above. The state of the polarization plane is changing. Display information output element DIO
Of the readout light emitted from the polarization beam splitter P
When incident on the BS, a P-polarized light component in the incident light is given from the polarizing beam splitter PBS to the projection lens L, which forms an image on the screen S,
An image to be displayed is displayed on the screen S.

A charge-coupled circuit for converting a time-series image signal into a two-dimensional image signal array and a spatial light modulator comprising at least a light modulating material layer member between two electrodes. And a display information output element including a unit for driving the spatial light modulation element unit with a two-dimensional image signal output from the charge-coupled circuit unit. , A dielectric mirror having an array of dielectric mirrors divided into strips or dots (islands) corresponding to each of the blue image information areas, or a red, green, and blue The color filter strips corresponding to the image information area (the direction of the color filter strips may be in the X direction or the Y direction) or the color filter strips divided into dots (islands) are arranged. Color separation striped filter etc. The present invention may be implemented using those configuration form such as that provided as color combining filter.

[0029]

As is apparent from the above description, the display device of the present invention converts a time-series image signal into two.
A charge-coupled circuit unit for converting into a two-dimensional image signal array;
A spatial light modulating element configured to include at least a light modulating material layer member between the two electrodes, and driving the spatial light modulating element with a two-dimensional image signal output from the charge coupled circuit Image information output from the display information output element does not have distortion which has been a problem in the conventional apparatus, and therefore has a simple configuration. Thus, a good display image can be projected on the screen, and a sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in the two-dimensional image. In each case, a plurality of individual time series signals in a divided time series signal in a state where the time series image signal is divided at predetermined time lengths on a time axis are converted into a two-dimensional image signal array. By supplying to the display information output device is provided with a separate charge-coupled portion of the charge-coupled portion, it is possible to increase the light output from the display information output device, further, orthogonal in the two-dimensional image 2
For each sequential time-series image signal corresponding to a pixel array arranged in one direction in the direction, the time-series image signal is obtained by dividing the time-series image signal by a predetermined time length on a time axis. A plurality of sets of parallel image signals are generated by a plurality of signal processing circuits based on the plurality of divided time-series signals, and a specific set of parallel images in the plurality of sets of parallel image signals output from the signal processing circuits is provided. A plurality of charge-coupled circuit units having a component having a function of transferring a signal in a pixel array direction orthogonal to the pixel array direction in the one direction. By supplying the display information output element, a pulse having a long repetition period can be used as a drive pulse used for the operation of the display information output element, and the light output from the display information output element can be increased. Still further, in the display device of the present invention, when a cathode ray tube is used as a means for writing light having image information to be displayed to the spatial light modulator, deflection distortion in the cathode ray tube or light emission Variations in the arrangement of the light emitting elements in the element array, distortion of the lens provided for imaging light having image information to be displayed on the spatial light modulation element, image distortion due to deflection distortion by the optical deflector, etc. When an image in a state where no image is generated is to be displayed on a screen, all of the conventional problems that have been complicated, large, and expensive devices can be solved satisfactorily. The image information output from the output element does not have the distortion that has been a problem in the conventional device, and even if vibration is applied to the device, the effect does not appear in the reproduced image, and the device has a simple configuration. A display device capable of out movies a good display image on the screen can be easily provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a display device of the present invention.

FIG. 2 is a block diagram of a display device according to an embodiment of the present invention.

FIG. 3 is a block diagram of an embodiment of the display device of the present invention.

FIG. 4 is a perspective view showing a schematic configuration of a display information output element that can be used in the display device of the present invention.

FIG. 5 is a diagram illustrating a configuration example of an image signal supply circuit of a display information output element.

FIG. 6 is a perspective view showing a schematic configuration of a display information output element that can be used in the display device of the present invention.

FIG. 7 is a diagram illustrating a configuration example of an image signal supply circuit of a display information output element.

[Explanation of symbols]

PBS: polarizing beam splitter, L: projection lens, S:
Screen, E ... bias power supply, DIO, DIOr, D
IOg, DIOb: display information output element, CDP: three-color synthesis / separation optical system, F: color filter, SDC: signal processing circuit, DA: drive circuit, 1, 1r, 1g, 1b: image to be displayed Signal input terminal, 2 ... Transparent substrate, 3
... Transparent electrode, 4 ... Light modulating material layer member, 5 ... Dielectric mirror layer, 6 ... Light shielding layer, 7 ... Silicon substrate (CCD reading layer) constituting CCD reading layer, 8 ... Time-series image signal , A charge-coupled circuit unit for converting the image signal into a two-dimensional image signal array, 12, 13... A dichroic mirror, 24.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shintaro Nakagaki 3-12-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Within JVC Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) G09F 9 / 00 360 G02F 1/13 505 H04N 5/74 H04N 9/31

Claims (15)

(57) [Claims] 1. A spatial light modulator comprising a charge-coupled circuit for converting a time-series image signal into a two-dimensional image signal array and at least a light modulating material layer member between two electrodes. A display information output element comprising: a unit for driving the spatial light modulation element unit by a two-dimensional image signal output from the charge coupled circuit unit; and a space in the display information output element. Means for providing read light to the light modulation element section, and a projection optical system for forming an image on the screen of output light emitted from the spatial light modulation element section in the display information output element while containing image information. Display device. 2. A spatial light modulator comprising a charge-coupled circuit for converting a time-series image signal into a two-dimensional image signal array and at least a light modulating material layer member between two electrodes. A display information output element comprising: a unit for driving the spatial light modulation element unit by a two-dimensional image signal output from the charge coupled circuit unit; and a space in the display information output element. Means for providing readout light to the light modulation element section, and a projection optical system for forming an image on the screen of output light emitted from the spatial light modulation element section in the display information output element while containing image information. In addition, a light whose transmission wavelength range is switched and changed in synchronization with the color switching cycle of the three-color primary color signals input to the display information output element in the optical path between the light source of the reading light and the screen. Display device provided with a biological filter. 3. The three-color combining / separating optical system is optically coupled to the three-color combining / separating optical system so that image information of each color light of three primary colors can be individually supplied to the three-color combining / separating optical system. A charge coupled circuit unit that converts a time-series image signal into a two-dimensional image signal array; a spatial light modulation element unit configured to include at least a light modulation material layer member between two electrodes; Three display information output elements each including: means for driving the spatial light modulation element section by a two-dimensional image signal output from the charge-coupled circuit section; Means for providing readout light of specific primary colors to the spatial light modulation element section of the information output element via the three-color combining / separating optical system described above, and the spatial light modulation element section of each display information output element described above. Including image information A display device comprising: means for combining output light emitted in the state with a three-color combining / separating optical system; and a projection optical system for forming light emitted from the three-color combining / separating optical system on a screen. 4. For each sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in a two-dimensional image, the time-series image signal is expressed on a time axis. When individual divided time-series signals in the divided time-series signals in a state of being divided for each predetermined time length are individually supplied, a plurality of divided time-series signals are converted into a two-dimensional image signal array for each of the divided time-series signals. A charge-coupled circuit unit, a spatial light modulation element unit including at least a light modulation material layer member between two electrodes, and a two-dimensional image signal output from the charge-coupled circuit unit. A display information output element comprising: means for driving the spatial light modulation element; a means for providing read light to the spatial light modulation element in the display information output element; and a space in the display information output element. Light modulation A display device, comprising: a projection optical system that forms output light emitted from the element section while containing image information on a screen. 5. For each sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in a two-dimensional image, the time-series image signal is expressed on a time axis. When individual divided time-series signals in the divided time-series signals in a state of being divided for each predetermined time length are individually supplied, a plurality of divided time-series signals are converted into a two-dimensional image signal array for each of the divided time-series signals. A charge-coupled circuit unit, a spatial light modulation element unit including at least a light modulation material layer member between two electrodes, and a two-dimensional image signal output from the charge-coupled circuit unit. A display information output element comprising: means for driving the spatial light modulation element; a means for providing read light to the spatial light modulation element in the display information output element; and a space in the display information output element. Light modulation A projection optical system for forming an image on the screen of output light emitted in a state including image information from the element portion, and the display information output described above is provided in an optical path between the light source of the readout light and the screen. A display device provided with an optical filter whose transmission wavelength range is switched and changed in synchronization with a color switching period of a three-color primary color signal input to an element. 6. A three-color combining / separating optical system which is optically coupled to the three-color combining / separating optical system so that image information of each light of three primary colors can be individually supplied to the three-color combining / separating optical system. For each sequential time-series image signal corresponding to the pixel array arranged in one of two orthogonal directions in the two-dimensional image, the time-series image signal is When individual divided time-series signals in a divided time-series signal in a state of being divided for each time length are individually supplied, a plurality of electric charges are converted into a two-dimensional image signal array for each of the divided time-series signals. A coupling circuit section, a spatial light modulation element section including at least a light modulation material layer member between two electrodes, and the space described above by a two-dimensional image signal output from the charge coupling circuit section. Means for driving the light modulation element section. Each of the three display information output elements provided and the spatial light modulation element section of the three display information output elements is provided with a specific primary color through the three-color combining / decomposing optical system. Means for providing readout light; and output light emitted from the spatial light modulation element section of each display information output element in a state containing image information.
A display device comprising: means for combining with a color combining / separating optical system; and a projection optical system for forming an image of light emitted from the three-color combining / separating optical system on a screen. 7. On a transparent substrate, a transparent electrode, a light modulating material layer member, a dielectric mirror layer, a CCD readout layer, and at least one for converting a time-series image signal into a two-dimensional image signal array. 7. The display device according to claim 1, wherein a display information output element formed by stacking a plurality of charge-coupled circuit units is used. 8. On a transparent substrate, a transparent electrode, a light modulating material layer member, a dielectric mirror layer, a light shielding layer, a CCD readout layer,
The display device according to any one of claims 1 to 6, wherein a display information output element formed by laminating at least one charge-coupled circuit unit that converts a time-series image signal into a two-dimensional image signal array is used. 9. On a transparent substrate, a transparent electrode, a light modulating material layer member, a dielectric mirror layer having wavelength selectivity, a light shielding layer, a CCD readout layer, and a two-dimensional image signal in time series. 9. The display device according to claim 3, wherein a display information output element formed by laminating at least one charge-coupled circuit unit for converting the image signal array is used. 10. For each sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in a two-dimensional image, the time-series image signal is expressed on a time axis. A plurality of signal processing circuits for generating a plurality of sets of parallel image signals based on a plurality of divided time-series signals obtained by dividing each of the predetermined time lengths; and a plurality of sets output from the signal processing circuit. When a specific set of parallel image signals among the parallel image signals is individually supplied, the parallel image signals are transferred in a pixel array direction orthogonal to the pixel array direction in the one direction. A plurality of charge-coupled circuit sections having components having functions, a spatial light modulation element section including at least a light modulation material layer member between two electrodes, and the above-described charge-coupled circuit Two-dimensional output from the part A display information output element comprising: means for driving the spatial light modulation element section with a simple image signal; means for providing read light to the spatial light modulation element section in the display information output element; and display information described above. A display device comprising: a projection optical system that forms output light emitted from a spatial light modulation element section of the output element while containing image information on a screen. 11. For each sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in a two-dimensional image, the time-series image signal is expressed on a time axis. A plurality of signal processing circuits for generating a plurality of sets of parallel image signals based on a plurality of divided time-series signals obtained by dividing each of the predetermined time lengths; and a plurality of sets output from the signal processing circuit. When a specific set of parallel image signals among the parallel image signals is individually supplied, the parallel image signals are transferred in a pixel array direction orthogonal to the pixel array direction in the one direction. A plurality of charge-coupled circuit sections having components having functions, a spatial light modulation element section including at least a light modulation material layer member between two electrodes, and the above-described charge-coupled circuit Two-dimensional output from the part A display information output element comprising: means for driving the spatial light modulation element section with a simple image signal; means for providing read light to the spatial light modulation element section in the display information output element; and display information described above. A projection optical system for forming an image on the screen of output light emitted from the spatial light modulation element section in the output element while containing image information, and in an optical path between a light source of the readout light and the screen. A display device provided with an optical filter whose transmission wavelength range is switched and changed in synchronization with the color switching cycle of the three-color primary color signals input to the display information output element. 12. For each sequential time-series image signal corresponding to a pixel array arranged in one of two orthogonal directions in a two-dimensional image, the time-series image signal is expressed on a time axis. A plurality of signal processing circuits for generating a plurality of sets of parallel image signals based on a plurality of divided time-series signals obtained by being divided for each predetermined time length;
The three-color combining / separating optical system is optically coupled to the three-color combining / separating optical system so that image information of each primary color light can be individually supplied to the three-color combining / separating optical system. A function of, when a specific set of parallel image signals in the parallel image signal is individually supplied, transferring the parallel image signal in a pixel array direction orthogonal to the pixel array direction in the one direction. A plurality of charge-coupled circuit sections having components including: a spatial light modulation element section including at least a light modulation material layer member between two electrodes; and the above-described charge-coupled circuit section Means for driving the spatial light modulating element unit with a two-dimensional image signal output from the display unit, and three display information output elements provided respectively, and spatial light in the three display information output elements. Modulator Means for providing readout light of a specific primary color to the unit via the three-color combining / separating optical system described above, and emitting light containing image information from the spatial light modulation element unit in each of the display information output elements described above. A display device comprising: means for combining the output light obtained by the three-color combining / separating optical system; and a projection optical system for forming an image of the light emitted from the three-color combining / separating optical system on a screen. 13. On a transparent substrate, a transparent electrode, a light modulating material layer member, a dielectric mirror layer, a CCD readout layer, and a plurality of charge-coupled circuit sections for transferring parallel image signals in a predetermined direction are laminated. 11. A display information output element comprising:
13. The display device according to any one of claims 12 to 12. 14. A transparent substrate, a light modulating material layer member, a dielectric mirror layer, a light shielding layer, a CCD readout layer, and a plurality of charge-coupled circuit sections for transferring parallel image signals in a predetermined direction on a transparent substrate. 13. The display device according to claim 10, wherein a display information output element formed by laminating the above is used. 15. A transparent substrate, a light modulating material layer member, a dielectric mirror layer having wavelength selectivity, a light shielding layer, a CCD readout layer, and a plurality of components for transferring parallel image signals in a predetermined direction on a transparent substrate. 13. The display device according to claim 12, wherein a display information output element formed by laminating the charge-coupled circuit unit is used.