JPH0772503A - Projection image display device - Google Patents

Abstract

PURPOSE:To provide the projection image display device which has superior spatial frequency characteristics. CONSTITUTION:For an electrically image writable transmission matrix liquid crystal display element part LCD, its substrate on the counter electrode side is composed of an optical fiber plate FOs, and liquid crystal which outputs light having an intensity distribution corresponding to a two-dimensional electric field intensity distribution upon image information is used for a liquid crystal layer which is given the electric field intensity distribution. For an optical writable reflection spatial optical modulating element part SLM, its substrate on the write light incidence side is constituted by using an optical fiber plate FO1; and projected luminous flux is varied in intensity corresponding to sequential pixel information of an image to be displayed by a polarization beam splitter PBS by using a display image light output element DIO constituted integrally while the end parts of the optical fiber plates FOs and OFl are optically connected abutting on each other, and the luminous flux is projected on a acreen S through a projection lens Lp to project the object image.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A projection type image display device is provided which is capable of displaying a two-dimensional image by projecting a light beam whose intensity is modulated by a time series information signal onto a screen by a projection optical system. One is that the output light from the electric image writing type transmissive matrix liquid crystal display element section is made incident on the optical writing type reflection type spatial light modulating element section by an optical fiber plate, and the optical writing type reflection type space described above is provided. 2. Description of the Related Art There is known a projection type image display device in which light read from a light modulation element section is projected on a screen by a projection lens system. FIG. 9 shows an electric image writing type transmissive matrix liquid crystal display element section and an optical writing type reflective spatial light modulating element section used in the above projection type image display apparatus, which are connected by an optical fiber plate, It is a side sectional view of a display image light output element integrally configured,
FIG. 10 is a perspective view (partial perspective view) of the display image light output element described above. 9 and 10, LCD is an electric image writing type transmissive matrix liquid crystal display element section, SLM is an optical writing type reflective spatial light modulating element section, and FO is an optical fiber plate. is there.

An electric image writing type transmissive matrix liquid crystal display element section LCD (hereinafter, simply referred to as a transmissive matrix liquid crystal display element) which constitutes the above-mentioned display image light output element shown in FIGS. 9 and 10. Part LCD), for example, a thin film transistor (TFT)
A switch matrix laminated / transmissive liquid crystal display panel is known. That is, for example, a pixel electrode side substrate made of a transparent material in which the pixel electrodes 2 made of a transparent conductive film such as an ITO film and the gate electrodes made of a conductive material such as chromium are formed in a predetermined pattern ( (Eg glass substrate)
1, a silicon dioxide film (SiO2 film), a silicon nitride film
(SiNx film) is laminated, and an amorphous silicon film (a-Si film), a source electrode, and a drain electrode are provided in the vicinity of a region facing the above-mentioned gate electrode formation portion, thereby forming a thin film transistor TFT. In addition, between the counter electrode side substrate (for example, a glass substrate) 4 made of a transparent material in which the counter electrode 3 made of a transparent conductive film such as an ITO film is formed, and the pixel electrode side substrate 1 described above. Is the state of light depending on the applied electric field strength
A liquid crystal layer 5 using, for example, a nematic liquid crystal that changes (a polarization state of light, a rotation state of light) is provided. 6 is an analyzer. The counter electrode side substrate 4 may be provided with a black matrix having a predetermined pattern.

Further, an optical writing type reflective spatial light modulator element SLM which constitutes the above-mentioned display image light output element.
(Hereinafter, it may be simply referred to as the reflective spatial light modulator element SLM.) As shown in FIG. 8, for example, the transparent substrate BP1 on the incident side of the writing light and the transparent electrode Et1 are provided. , Photoconductive layer member PCL and dielectric mirror DML
And a light modulating material layer member PML, a transparent electrode Et2, and a transparent substrate BP2 on the incident and emitting side of the reading light are laminated, and the transparent electrodes Et1 and Et2 are thin films of a transparent conductive material. (It may be configured to have a light-shielding film). The photoconductive layer member PC
L is made of a substance exhibiting photoconductivity in the wavelength range of light used, and the dielectric mirror DML is of a well-known form constituted as a multilayer film capable of reflecting light of a predetermined wavelength band. Further, as the light modulation material layer member PML, a light modulation material (for example, a nematic liquid crystal) that changes a light state (a light polarization state, a light rotation state) according to an applied electric field strength is used. , Lithium niobate, BSO, PLZT). E is a transparent electrode Et
A power supply for applying a predetermined voltage between 1 and Et2,
Although the power source E is shown as an AC power source in the drawing, it may be a DC power source or an AC power source depending on the constituent material of the light modulation material layer member PML.

The transmissive matrix liquid crystal display element section LCD and the reflective spatial light modulation element section SLM described above are
The pixel electrode side substrate 1 in the transmissive matrix liquid crystal display element section LCD and the transparent substrate BP1 on the writing light incident side in the reflective spatial light modulation element section SLM are optically connected by an optical fiber plate FO. To form a display image light output element. In FIG. 9, DCT is a drive circuit. The transmissive matrix liquid crystal display element unit LCD in the display image light output element is supplied with a time-series image signal to be displayed from the drive circuit DCT and a drive signal for scanning. At the same time, when the light emitted from the light source enters through the polarizer, the transmissive matrix liquid crystal display element unit LCD
Then, the light incident thereon is selectively applied to the liquid crystal layer 5 between the counter electrode 3 provided on the counter electrode side substrate 4 and the pixel electrodes 2, 2 ... Provided on the pixel electrode side substrate 1. The generated voltage is changed by the thin film transistor TFT for each pixel according to the image signal to be displayed, so that the state of the polarization plane is changed for each pixel arranged two-dimensionally by the above-mentioned image signal. The light is changed to a light in which the intensity of the light is changed for each pixel by the analyzer 6, and the writing light is incident on the reflection-type spatial light modulator element SLM via the optical fiber plate FO. It is incident on the transparent substrate BP1 on the side.

As described above, the light whose intensity is modulated by the image information to be displayed is the transparent substrate BP1 side on the incident side of the writing light in the reflective spatial light modulator element SLM (see FIG. 8). Incident from the photoconductive layer member PC
When applied to L, the reflection type spatial light modulation element section S in which a predetermined voltage is supplied from the power source E between the transparent electrodes Et1 and Et2
In the LM, the electric resistance value of the photoconductive layer member PCL at the portion where the writing light WL is condensed changes according to the light amount of the incident light, and the light modulation material layer member PML displays An electric field that changes corresponding to the light quantity of the writing light WL whose intensity is modulated by the targeted information is applied. When the reading light RL is made incident from the transparent substrate BP2 side in the reflective spatial light modulator element SLM, the reading light RL is a dielectric by a path of the transparent substrate BP2 → the electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML. The reflected light of the read light that reaches the mirror DML and is reflected there exits from the reflective spatial light modulator element SLM along the route of the dielectric mirror DML → light modulator material layer member PML → electrode Et2 → transparent substrate BP2 →. Reflective spatial light modulator element SLM
The light flux of the readout light emitted from the light flux travels back and forth through the light modulation material layer member PML to which the electric field in a state corresponding to the pixel information of the image to be displayed is applied. The state of light is changed corresponding to the pixel information of the target image.

Then, the constituent material of the light modulation material layer member PML in the reflection type spatial light modulation element portion SLM described above is in a polarization state of light passing therethrough or birefringence according to the electric field strength applied thereto. In the case where the state is changed, the reflected light flux of the readout light emitted from the reflective spatial light modulator element SLM as described above is the pixel information of the image to be displayed. The state of polarization is changed corresponding to the sequential pixel information in 1., and the light flux emitted from the reflective spatial light modulator element SLM is passed through the analyzer to output the display image light. The reflected light flux of the reading light emitted from the reflective spatial light modulator element SLM that constitutes the element corresponds to the sequential pixel information in the pixel information of the image to be displayed, and the intensity of the light. Since the assumed state is changing, if projected it by the projection lens onto the screen, it exits movies the image being on the subject of the display screen.

[0008]

By the way, the electric image writing type transmission type matrix liquid crystal display element section LCD and the optical writing type reflection type spatial light modulating element section which have already been described with reference to FIGS. 9 and 10. Fiber Optic Plate FO with SLM
In the conventional display image light output element connected by means of the above, the pixel of the transparent material in the electric image writing type transmissive matrix liquid crystal display element section LCD used as a constituent part thereof. The electrode side substrate 1 is
Since it is provided on the output side of the output light from the electric image writing type transmission type matrix liquid crystal display element unit LCD,
The state of the light (the polarization state of the light,
Between the liquid crystal layer 5 using nematic liquid crystal and the optical fiber plate FO for changing the optical rotation state of the light,
The pixel electrode side substrate 1 made of the transparent material and the polarizing plate 6 are interposed, and therefore the distance between the liquid crystal layer 5 and the optical fiber plate FO is several hundred μm.
However, the spatial frequency characteristic (resolution) of the image is greatly deteriorated, and it is difficult to display a high-resolution display image on the screen. In order to solve the above-mentioned problems, conventionally, the incident light to the electric image writing type transmissive matrix liquid crystal display element unit LCD is set to be substantially parallel light, but the incident light is completely parallel. The problem of resolution deterioration cannot be solved unless it is light, and it is extremely difficult to convert the incident light into perfectly parallel light, so a solution thereof has been sought.

[0009]

According to the present invention, a light beam intensity-modulated by image information to be displayed, which is output from an electric image writing type transmission matrix liquid crystal display element section, is optically written. Of a light beam whose intensity is modulated by the image information to be displayed, which is given as writing light to the reflection type spatial light modulating element unit of the optical type and is read from the reflection type spatial light modulating element unit of the optical writing type described above. A projection type image display device for projecting an image on a screen by a system to display an image on the screen, wherein the counter electrode side substrate of the transmission type matrix liquid crystal display element unit of the electric image writing type is an optical fiber. The liquid crystal layer, which is composed of a plate and is provided with a two-dimensional electric field intensity distribution according to image information, outputs light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution. The optical writing type reflective spatial light modulating element is used as the optical writing plate side substrate, and the optical writing plate is used as the writing light incident side substrate. The optical fiber plate end of the image writing type transmissive matrix liquid crystal display element part and the end part of the optical fiber plate of the optical writing type reflective spatial light modulating element part are abutted to each other to optically A projection type image display device having a display image light output element integrally configured in a connected state, and an object of display output from an electric image writing type transmission type matrix liquid crystal display element section. The optical flux whose intensity is modulated by the image information is given to the optical writing type reflective spatial light modulating element section as writing light, and the optical writing type reflective spatial light modulating element section A projection-type image display device for displaying an image on a screen by projecting a light flux whose intensity is modulated with image information read out to be displayed on a screen by a projection optical system, and serving as a counter electrode side substrate. While using an optical fiber plate,
Electrical image writing using a liquid crystal layer capable of outputting light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution by giving a two-dimensional electric field intensity distribution according to image information Type transmissive matrix liquid crystal display element section and the optical writing type reflection formed by using the optical fiber plate in the electric image writing type transmissive matrix liquid crystal display element section described above as a substrate on the incident side of writing light. Provided is a projection-type image display device provided with a display image light output element integrally configured with a mold spatial light modulation element section.

[0010]

As an electric image writing type transmissive matrix liquid crystal display element LCD, the substrate on the side of the counter electrode 3 thereof is composed of the optical fiber plate FOs, and the two-dimensional electric field intensity distribution according to the image information is obtained. The liquid crystal layer 5 to be provided is constituted by using a liquid crystal capable of outputting light having an intensity distribution corresponding to the above-mentioned two-dimensional electric field intensity distribution, and the optical writing type reflective spatial light modulation is used. As the element portion SLM, one formed by using an optical fiber plate FO1 as a substrate on the writing light incident side is used, and further, the end of the optical fiber plate FOs of the above-mentioned electric image writing type transmission matrix liquid crystal display element portion LCD. And the end of the optical fiber plate FOl of the optical writing type reflection type spatial light modulator element SLM are butted against each other to make optical contact between them. In the display image light output element DIO integrally formed in a controlled state, the pixel electrodes 2, 2 ... By the transparent conductive film of the transmission type matrix liquid crystal display element section LCD of the electric image writing type, and the gate by the conductive material The writing light is made incident from the side of the substrate 1 on the side of the pixel electrode made of a transparent material in which the electrodes and the like are formed in a predetermined pattern.

The writing light incident on the electric image writing type transmissive matrix liquid crystal display element section LCD is provided on the counter electrode 3 provided on the optical fiber FOs used as a substrate and the substrate 1 on the pixel electrode side. The voltage selectively applied to the liquid crystal layer 5 between the selected pixel electrodes 2, 2 ... Is changed by the thin film transistor TFT for each pixel according to the image signal to be displayed, Light in a state in which the intensity of the light is changed for each of the pixels arranged two-dimensionally is used as write light for the reflective spatial light modulation element section SLM, and the writing light is incident on the reflective spatial light modulation element section SLM. The light is focused on the photoconductive layer member PCL via the optical fiber plate FOl used as the transparent substrate of the above and the transparent electrode Et1.

The photoconductive layer member P of the portion where the writing light WL is condensed in the reflection type spatial light modulator element SLM in which a predetermined voltage is supplied from the power source E between the transparent electrodes Et1 and Et2.
The electric resistance value of CL changes according to the amount of the incident light. As a result, an electric field that changes according to the amount of the writing light WL whose intensity is modulated by the information to be displayed is applied to the light modulation material layer member PML. In the reflective spatial light modulator element SLM of the display image light output element DIO, the read light emitted from the light source LSr of the read light is transparent in the reflective spatial light modulator element SLM via the polarization beam splitter PBS. Board BP2
Since it is incident from the side, the readout light RL reaches the dielectric mirror DML through the path of the transparent substrate BP2 → electrode Et2 → light modulation material layer member PML → dielectric mirror DML,
The reflected light of the read light reflected there is the dielectric mirror DM.
L → light modulation material layer member PML → electrode Et2 → transparent substrate BP2
The light is emitted from the reflection type spatial light modulation element section SLM of the display image light output element DIO.

The light flux of the readout light emitted from the reflective spatial light modulator element SLM is an optical modulator material layer member PML to which an electric field corresponding to the pixel information of the image to be displayed is applied. Since the light flux reciprocates through the light flux, the light flux changes its light state in accordance with the pixel information of the image to be displayed. When the constituent material of the light modulating material layer member PML of the SLM is such that it changes the polarization state or the birefringence state of the light passing therethrough according to the electric field strength applied to it. The reflected light flux of the readout light emitted from the reflective spatial light modulator element SLM as described above changes the polarization state corresponding to the sequential pixel information in the pixel information of the image to be displayed. Even when It has become. Therefore, the display image light output element DIO reflective spatial light modulator element SLM described above is used.
The light beam emitted from the light beam is changed in intensity by the polarization beam splitter PBS in correspondence with the sequential pixel information in the pixel information of the image to be displayed, which is the projection lens Lp. The image projected on the screen S is displayed by the screen S and is displayed on the screen.

The substrate on the side of the counter electrode 3 is composed of an optical fiber plate FOc, and the liquid crystal layer 5 is applied with a two-dimensional electric field intensity distribution according to the image information, so that
An electric image writing type transmissive matrix liquid crystal display element unit LCD configured by using a liquid crystal capable of outputting light having an intensity distribution corresponding to a three-dimensional electric field intensity distribution,
Optical fiber plate FOc in the above-mentioned electric image writing type transmissive matrix liquid crystal display element LCD
However, the electric image writing type transmissive matrix liquid crystal display element section LCD and the optical writing type reflection type spatial light modulating element section SLM are also used as a substrate on the writing light incident side. The pixel electrodes 2, 2 formed of a transparent conductive film of the electric image writing type transmission matrix liquid crystal display element unit LCD in the display image light output element DIO integrally configured, the gate electrode formed of a conductive material, and the like, Writing light is incident from the side of the substrate 1 on the side of the pixel electrode made of a transparent material and formed in a predetermined pattern.

The writing light incident on the electric image writing type transmissive matrix liquid crystal display element section LCD is provided on the counter electrode 3 provided on the optical fiber FOc used as a substrate and on the substrate 1 on the pixel electrode side. The voltage selectively applied to the liquid crystal layer 5 between the selected pixel electrodes 2, 2 ... Is changed two-dimensionally by the thin film transistor TFT for each pixel according to the image signal to be displayed. Through the optical fiber plate FOc, which is used as a transparent substrate on the incident side of the writing light in the reflective spatial light modulator element SLM, the light in the state where the intensity of the light is changed for each pixel that is arranged The light is focused on the photoconductive layer member PCL of the reflective spatial light modulator element SLM.

The photoconductive layer member P of the portion where the writing light WL is condensed in the reflection type spatial light modulator element SLM in which a predetermined voltage is supplied from the power source E between the transparent electrodes Et1 and Et2.
The electric resistance value of CL changes according to the amount of the incident light. As a result, an electric field that changes according to the amount of the writing light WL whose intensity is modulated by the information to be displayed is applied to the light modulation material layer member PML. The reading light emitted from the reading light source LSr is
When it enters from the transparent substrate BP2 side in the reflection type spatial light modulation element section SLM of the display image light output element DIO via the polarization beam splitter PBS, the read light RL is transparent substrate BP2 → electrode Et2 → light modulation material layer member PML → It reaches the dielectric mirror DML by the path of the dielectric mirror DML,
The reflected light of the read light reflected there is the dielectric mirror DM.
L → light modulation material layer member PML → electrode Et2 → transparent substrate BP2
The light is emitted from the reflection type spatial light modulation element section SLM of the display image light output element DIO in the path of.

The light flux of the readout light emitted from the reflective spatial light modulator element SLM reciprocates through the light modulator material layer member PML to which the electric field in a state corresponding to the pixel information of the image to be displayed is applied. Since it is a luminous flux that has changed, the luminous flux changes its light state in correspondence with the pixel information of the image to be displayed. However, the reflective spatial light in the display image light output element DIO The constituent material of the light modulation material layer member PML of the modulation element section SLM is such that the polarization state or the birefringence state of light passing therethrough is changed according to the electric field strength applied thereto. In this case, the reflective spatial light modulator element SLM as described above is used.
The reflected light flux of the readout light emitted from the device is in a state where the polarization state is changed corresponding to the sequential pixel information in the pixel information of the image to be displayed. Therefore, the luminous flux emitted from the reflective spatial light modulator element SLM in the display image light output element DIO is
The polarization beam splitter PBS changes the light intensity corresponding to the sequential pixel information in the pixel information of the image to be displayed, which is projected on the screen S by the projection lens Lp. Has been
The image to be displayed is displayed on the screen.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete contents of the projection type image display apparatus of the present invention will be described in detail below with reference to the accompanying drawings. 1 and 2 are block diagrams of respective different embodiments of the projection type image display apparatus of the present invention, and FIG. 3 constitutes a part of a display image light output element used in the projection type image display apparatus of the present invention. FIG. 4 is a perspective view showing a schematic configuration of an example of an electric image writing type transmissive matrix liquid crystal display element section, and FIG. 4 shows a part of a display image light output element used in the projection type image display apparatus of the present invention. FIG. 5 is a perspective view showing a schematic configuration of an example of the optical writing type reflection type spatial light modulating element section, and FIG. 5 shows a schematic configuration of an example of a display image light output element used in the projection type image display device of the present invention. 6 is a perspective view showing the guest-host mode, FIG. 7 is a diagram showing an example of sensitivity characteristic curves with respect to wavelengths of constituent members, and FIG. 8 is a cross-sectional view showing a structural example of an optical writing type reflective spatial light modulator element. Fig. 9 and Fig. 9 are conventional display image light output devices. Side view for explaining the diagrams 10 is a perspective view showing a display image light output element (partially perspective view). 2 and the components indicated by the reference numeral DIO in FIG.
The respective constituent parts respectively designated by the drawing symbols DIOr, DIOg, and DIOb are a transmission type matrix liquid crystal display element section LCD and a reflection type spatial light modulation element section SLM.
Is a display image light output element having a special structure in which the above are optically connected by an optical fiber plate used as a part of each of the above-mentioned components to form an integral structure.

Now, FIG. 3 is a perspective view of a configuration example of a transmissive matrix liquid crystal display element section LCD used as a constituent member of the display image light output element DIO shown in FIG. FIG. 4 is a perspective view of a configuration example of the reflective spatial light modulator element SLM used as a component member of the display image light output element DIO shown in FIG. An electric image writing type transmissive matrix liquid crystal display element section LCD in the display image light output element DIO used in the projection type image display apparatus of the present invention shown in FIG.
As shown in FIG. 3, the pixel electrode 2 made of a transparent conductive film, the thin film transistor TFT and the like are formed in a predetermined pattern on the substrate side of the pixel electrode made of a transparent material and the optical fiber plate. When a two-dimensional electric field strength distribution according to image information is given between the pixel electrode 2 and the counter electrode 3 between the substrate FOs on the side of the counter electrode 3 formed of (FOs). In addition, by enclosing the liquid crystal in a liquid crystal layer 5 made of a liquid crystal having a characteristic capable of outputting light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution, for example, a hole of a porous polymer film, This is a configuration mode in which a liquid crystal layer 5 (or a liquid crystal layer 5 made of liquid crystal having a guest-host effect) formed of a polymer-liquid crystal composite film that exhibits a scattering effect is provided.

By the way, the liquid crystal exhibiting the guest-host effect which can be used for the construction of the liquid crystal layer 5 of the above-mentioned electric image writing type transmissive matrix liquid crystal display element LCD is a solute in the liquid crystal used as a solvent. Is composed of a mixed liquid crystal in which a dichroic dye is dissolved. 2 above
Chromatic dyes are dyes that differ in the degree of absorption of light (different colors) depending on the direction of the plane of polarization with respect to the dye molecular structure,
When this dichroic dye is dissolved in nematic liquid crystal molecules, the dye molecules are aligned in a certain direction by interaction with the liquid crystal molecules used as a solvent, so that the dichroism of the dye molecules is preserved. When the alignment state of the liquid crystal molecules in which the dichroic dye is dissolved as a solute in the liquid crystal used as is changed by the electric field applied to the liquid crystal layer, the alignment state of the dichroic dye is changed accordingly. The dichroic dye changes the absorption state of light incident from a certain direction according to the electric field applied to the liquid crystal layer.

FIG. 6 shows a guest-host type cell P having a liquid crystal layer composed of liquid crystal having a guest-host effect.
It is a figure explaining operation | movement of MLgh, and this FIG. 6 has shown the electro-optical effect about the guest host type cell PMLgh which made Np liquid crystal which melt | dissolved the p-type dichroic dye as a liquid crystal layer align horizontally. . In FIG. 6, WL is writing light of indefinite polarization in the wavelength range absorbed by the dye molecule, and the writing light WL is made into linearly polarized light having a specific polarization plane by the polarizer PL, and liquid crystal having a guest-host effect is used. The light is incident on the guest-host cell PMLgh having the configured liquid crystal layer. FIG. 6A shows the state of the guest host type cell PMLgh when no electric field is applied, and when the electric field is not applied to the guest host type cell PMLgh, the guest host type cell P
Since the vibration direction of the linearly polarized light incident on the MLgh and the light absorption axis of the dye molecule in the guest-host cell PMLgh match and the light is absorbed by the dye molecule, the light is not emitted from the guest-host cell PMLgh. .

When an electric field is applied to the guest-host type cell PMLgh, as shown in FIG. 6B, the vibration direction of the linearly polarized light incident on the guest-host type cell PMLgh and the guest-host type cell are shown. Since the light absorption axis of the dye molecule in PMLgh is perpendicular to the light absorption axis of the dye molecule, the light absorption by the dye molecule is not performed.
Light is emitted from MLgh. When an n-type dichroic dye and Nn liquid crystal are used as the liquid crystal layer of the guest-host type cell PMLgh, the electric field is applied to the guest-host type cell PMLgh in the opposite manner to the above case. , The guest-host type cell PMLgh absorbs light and the emitted light from the guest-host type cell PMLgh disappears, and in the state where no electric field is applied to the guest-host type cell PMLgh, the guest-host type cell PMLgh absorbs light. Is not performed and light is emitted from the guest-host type cell PMLgh.

Further, the display image light output element D used in the projection type image display apparatus of the present invention shown in FIG.
Optical writing type reflective spatial light modulator element SL in IO
As shown in FIG. 4, M uses an optical fiber plate FOL as a substrate on the side of incidence of writing light.
The optical fiber plate FOL is used as a substrate, and the transparent electrode Et1, the photoconductive layer member PCL, the dielectric mirror DML, the optical modulation material layer member PML, and the transparent substrate BP2 are laminated. If necessary, between the photoconductive layer member PCL and the dielectric mirror DML,
A light shielding layer may be provided. Photoconductive layer member PC described above
As L, for example, an amorphous silicon film or a hydrogenated amorphous silicon film is used. FIG. 7 is a diagram showing an example of spectral sensitivity characteristics of a hydrogenated amorphous silicon film, and the sensitivity is maximized at a wavelength of 700 nm.

As the photoconductive layer member PCL in the photo-writing type reflective spatial light modulator element SLM in the display image light output element DIO, as shown in FIG.
When a hydrogenated amorphous silicon film having a spectral sensitivity characteristic showing the maximum sensitivity at 00 nm is used,
As the dichroic dye used in the structure of the liquid crystal layer 5 made of liquid crystal exhibiting the guest-host effect in the above-mentioned electric image writing type transmissive matrix liquid crystal display element LCD, a dichroic dye capable of absorbing light having a wavelength of 700 nm And the light that is made incident from the light source LSw (FIG. 1) of the writing light on the electrical image writing type transmission matrix liquid crystal display element section LCD in the display image light output element DIO is also the filter F (FIG. 1). By setting the light in the wavelength band around 700 nm as described above, optical writing is performed in a good state on the photoconductive layer member PCL of the reflection type spatial light modulator of the optical writing type SLM. The transparent electrodes Et1 and Et2 in the above-mentioned light-writing type reflective spatial light modulator element SLM are made of, for example, an ITO film, and the dielectric mirror DML is formed by alternately laminating thin films of Si, SiO2, TiO2 and the like. Can be configured by Also,
The light modulation material layer member PML may be configured by using vertically aligned nematic liquid crystal having low wavelength dependence.

The electric image writing type transmissive matrix liquid crystal display element section LCD described with reference to FIG. 3 and FIG.
The optical writing type reflection type spatial light modulating element section SLM described with reference to FIGS. 1A and 1B is an end portion of the optical fiber plate FOs of the electric image writing type transmission type matrix liquid crystal display element section LCD and the optical writing type. The end portion of the optical fiber plate FOL of the reflective spatial light modulator element SLM of FIG.
As shown therein, the display image light output element DIO is integrated by being brought into abutment and optically connected state.

In the projection type image display device of the present invention shown in FIG. 1, the display image light output element DIO has an electric image writing type transmission type matrix liquid crystal display element section LC.
The light emitted from the light source LSw of the writing light is incident on D via the filter F and the polarizer PL. The above-mentioned filter F electrically receives light in a predetermined wavelength band (for example, light in a wavelength band of 700 nm) so that a good writing operation can be performed in the optical writing type reflective spatial light modulator section SLM. The one having a filtering characteristic that can be applied to the photoconductive layer member PCL of the photowriting type reflection type spatial light modulation element unit SLM via the image writing type transmissive matrix liquid crystal display element unit LCD is used. It

For the transmissive matrix liquid crystal display element section LCD in the display image light output element DIO, a time-series image signal to be displayed by the drive circuit DCT and a drive signal for scanning are provided. As described above, the light emitted from the light source LSw for writing light is supplied,
Through the filter F and the polarizer PL, the pixel electrodes 2, 2 made of a transparent conductive film of the electric image writing type transmission type matrix liquid crystal display element unit LCD, the gate electrode made of a conductive material, and the like are predetermined. When writing light enters from the side of the substrate 1 on the side of the pixel electrode made of a transparent material formed in the pattern, the writing light is applied to the counter electrode 3 provided on the optical fiber FOs used as the substrate and the side of the pixel electrode. The voltage selectively applied to the liquid crystal layer 5 between the pixel electrodes 2, 2 provided on the substrate 1 of the substrate changes depending on the image signal to be displayed by the thin film transistor TFT. As a result, the optical fiber used as the counter electrode side substrate is made into the light in which the light intensity is changed by the image signal for each of the pixels arranged two-dimensionally. Is injected into over plate Fos, the light is incident on the optical fiber plate FOl used as the substrate on the incident side of the writing light in the reflection type spatial light modulator portion SLM.

As described above, the light whose intensity is modulated by the image information to be displayed is used as a substrate on the incident side of the writing light in the reflection type spatial light modulator element SLM. When incident on the photoconductive layer member PCL and applied to the transparent electrode Et1,
In the reflective spatial light modulator element SLM to which a predetermined voltage is supplied from the power source E between Et2, the electric resistance value of the photoconductive layer member PCL at the portion where the writing light WL is condensed is the above-mentioned incidence. The light modulation material layer member P is changed in accordance with the amount of light.
An electric field that changes corresponding to the light quantity of the writing light WL whose intensity is modulated by the information to be displayed is applied to the ML. On the transparent substrate BP2 side of the reflective spatial light modulator element SLM, the read light RL emitted from the light source LSr of the read light is incident via the polarization beam splitter PBS. The transparent substrate BP2 → the electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML reaches the dielectric mirror DML, and the reflected light of the read light reflected by the dielectric mirror DML → the light modulation material layer member PML → The light is emitted from the reflective spatial light modulator element SLM along the path of the electrode Et2 → the transparent substrate BP2 →.

The light flux of the readout light emitted from the reflective spatial light modulator element SLM reciprocates through the light modulator material layer member PML to which an electric field corresponding to the pixel information of the image to be displayed is applied. Since it is a luminous flux that has been generated, the luminous flux has its light state changed corresponding to the pixel information of the image to be displayed. Then, the constituent material of the light modulation material layer member PML in the reflective spatial light modulation element section SLM described above changes the polarization state or the birefringence state of the light passing therethrough in accordance with the electric field strength applied thereto. If it is changed, the reflected light flux of the reading light emitted from the reflective spatial light modulation element unit SLM as described above is sequentially reflected in the pixel information of the image to be displayed. It is in a state in which the state of polarization changes corresponding to the pixel information. Then, the light beam emitted from the reflection-type spatial light modulation element unit SLM is passed through the polarization beam splitter PBS to read out the light emitted from the reflection-type spatial light modulation element unit SLM forming the display image light output element. The reflected light flux of is changed to a state in which the intensity of light changes corresponding to the sequential pixel information in the pixel information of the image to be displayed. The light emitted from the polarization beam splitter PBS is imaged on the screen S by the projection lens Lp, and the image to be displayed is displayed on the screen S.

FIG. 2 shows an example of the construction of a projection type image display device in the case where the image to be displayed is a color image. In FIG. 2, DIOr, DIOg and DIOb are three primary colors of additive color mixture. A display image light output element provided in correspondence with the image signal of each primary color individually,
Each of the above-mentioned display image light output elements DIOr, DIOg, D
As the IOb, for example, the electric image writing type transmissive matrix liquid crystal display element unit LCD described with reference to FIG. 3 and the optical writing type reflection type spatial light modulation element described with reference to FIG. The section SLM includes an end portion of an optical fiber plate FOs of an electric image writing type transmissive matrix liquid crystal display element section LCD and an end portion of an optical fiber plate FOl of a light writing type reflective spatial light modulating element section SLM. As shown in FIG. 1, an integrated configuration in which the components are butted and optically connected to each other (or the configuration as described with reference to FIG. 5) is used.

Each display image light output element DIOr,
In DIOg and DIOb, a display image light output element DI
An electrical image writing type transmissive matrix liquid crystal display element section LC used as a constituent part of Or is shown in FIG.
An image signal of the red primary color image of the three primary color images of additive color mixture is supplied to D from a drive circuit DCT (not shown), and is used as a component of the display image light output element DIOg. An image signal of a green primary color image of the three primary color images of additive color mixture is supplied from an unillustrated drive circuit DCT to the electric image writing type transmissive matrix liquid crystal display element unit LCD that is being operated. Further, the display image light output element DIOb is added to an electric image writing type transmissive matrix liquid crystal display element section LCD used as a component thereof from a drive circuit DCT (not shown). The image signal of the blue primary color image of the three primary color images of mixed colors is supplied.

Reference numerals 1r, 1g and 1b denote display image light output elements DIOr, which are provided for the respective primary color images.
The writing light source portion provided for each of DIOg and DIOb is shown, and the writing light source portions 1r, 1g, and
Each of the light sources 1b includes a light source LSw for writing light as shown in FIG. The light emitted from each of the writing light source portions 1r, 1g, and 1b described above is transmitted through the filter F and the polarizer PL, which are individually provided, to each of the display image light output elements DIOr, DIOg, and DI.
The light is incident on the substrate 1 on the pixel electrode side of the electric image writing type transmissive matrix liquid crystal display element section LCD in Ob. DP in FIG. 2 is a dichroic prism, PBS
Is a polarization beam splitter, LSr is a light source for reading light, L
p is a projection lens and S is a screen. In FIG. 2, the power source E provided for each reflection type spatial light modulation element section SLM in each display image light output element DIOr, DIOg, DIOb is omitted, and as described above, each display is performed. The drive circuit DCT provided for each of the transmissive matrix liquid crystal display element sections LCD in the image light output elements DIOr, DIOg, DIOb is not shown.

In each transmissive matrix liquid crystal display element section LCD in each display image light output element DIOr, DIOg, DIOb shown in FIG. 2, as described above, from the individual drive circuit DCT not shown respectively, The light of each primary color image in the state of which the intensity is modulated by the image signal of each of the three primary colors of the additive color mixture supplied individually is emitted to the optical fiber plate FOs used as the counter electrode side substrate, and the light is emitted. Is incident on the optical fiber plate FOl used as the substrate on the incident side of the writing light in each reflective spatial light modulator element SLM in each display image light output element DIOr, DIOg, DIOb. As described above, the light whose intensity is individually modulated by each primary color image information to be displayed is used as the substrate on the incident side of the writing light in each reflective spatial light modulator element SLM. When the light enters the plate FOL and is applied to the photoconductive layer member PCL, the transparent electrode E
In each reflective spatial light modulator element SLM to which a predetermined voltage is supplied from the power source E between t1 and Et2, the electric resistance value of the photoconductive layer member PCL in the portion where the writing light is condensed is
By changing in accordance with the light quantity of the incident light, the light modulating material layer member PML changes in accordance with the light quantity of each of the above-mentioned writing lights whose intensity is modulated by the information to be displayed. An electric field is being applied.

Each reflective spatial light modulator element SLM described above
On the transparent substrate BP2 side of the light source LSr of the reading light.
The reading light RL emitted from the light source is supplied via the polarization beam splitter PBS and the dichroic prism DP.
The reading light supplied to the transparent substrate BP2 side of the LM is the reading light RL emitted from the reading light source LSr.
Is reflected by the polarization beam splitter PBS, enters the dichroic prism DP, and is separated into three colors by the dichroic prism DP. Therefore, the reflection type space used as a component of the display image light output element DIOr is used. Red primary color light is incident on the transparent substrate BP2 in the light modulation element section SLM, and the green color is applied to the transparent substrate BP2 in the reflective spatial light modulation element section SLM used as a component of the display image light output element DIOg. Primary color light is incident on the display image light output element DI.
The blue primary color light is incident on the transparent substrate BP2 of the reflective spatial light modulator element SLM used as a component of Ob.

The individual read light RL in the wavelength range of each of the primary color lights is the display image light output element DIOr, DIOg, DI.
In each reflective spatial light modulator element SLM in Ob, the transparent substrate BP2 → the electrode Et2 → the light modulator material layer member PML.
→ Dielectric mirror DML by the route of dielectric mirror DML
The reflected light of the read light that has reached and has exited there is emitted from each reflection type spatial light modulation element section SLM along the route of the dielectric mirror DML → light modulation material layer member PML → electrode Et2 → transparent substrate BP2 →. The luminous flux of the reading light in the wavelength range of each primary color light emitted from each reflective spatial light modulator element SLM as described above is an electric field in a state corresponding to the pixel information of each primary color image to be displayed. Is a light flux that has traveled back and forth through the applied light modulation material layer member PML, so that the light flux of the readout light in the wavelength range of each primary color light corresponds to the pixel information of each primary color image to be displayed. The state of light is changing.

Then, each display image light output element D described above
The constituent material of the light modulation material layer member PML in each reflection type spatial light modulation element unit SLM in IOr, DIOg, and DIOb is in the polarization state of the light passing therethrough or in the birefringence according to the electric field strength applied thereto. In such a case, the reflected light flux of the readout light emitted from each reflective spatial light modulator element SLM as described above is converted into the primary color image to be displayed. The state of polarization is changed corresponding to the sequential pixel information corresponding to the pixel information of the above, and each reflection type spatial light modulation in each of the display image light output elements DIOr, DIOg, DIOb is performed. The light flux of each primary color image emitted from the element unit SLM is combined into three colors by the dichroic prism DP, and then passes through the polarization beam splitter PBS to enter the projection lens Lp. Each display image light output element DI
The reflected light flux of the read light by each primary color light emitted from each reflective spatial light modulator element SLM in Or, DIOg, DIOb is a sequential pixel corresponding to the pixel information of each primary color image to be displayed. Since the light intensity is changed in correspondence with the sequential pixel information in the information, when the light emitted from the polarization beam splitter PBS is imaged on the screen S by the projection lens Lp, the screen is changed. On S, a color image to be displayed is displayed.

FIG. 5 shows another configuration mode of the display image light output element DIO used in the projection type image display device of the present invention. The display image light output element DIO shown in FIG.
Is the substrate on the side of the counter electrode 3 is the optical fiber plate FOc
And a liquid crystal layer 5 which is capable of outputting light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution by applying a two-dimensional electric field intensity distribution according to image information. The electric image writing type transmissive matrix liquid crystal display element unit LCD configured as described above, and the optical fiber plate FOc in the electric image writing type transmissive matrix liquid crystal display element unit LCD described above are optical writing type reflection type The electric image writing type transmissive matrix liquid crystal display element section L is also used as a substrate on the writing light incident side of the spatial light modulation element section SLM.
It is a display image light output element DIO in which a CD and an optical writing type reflection type spatial light modulation element section SLM are integrally configured.

The display image light output device D shown in FIG.
The electric image writing type transmissive matrix liquid crystal display element section LCD in IO has a pixel electrode 2 made of a transparent conductive film, a thin film transistor TFT, etc. formed in a predetermined pattern on the pixel electrode side made of a transparent material. The pixel electrode 2 described above is provided between the substrate 1 side and the substrate FOc on the side of the counter electrode 3 formed of an optical fiber plate (FOc).
When a two-dimensional electric field intensity distribution according to image information is provided between the counter electrode 3 and the counter electrode 3, it is possible to output light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution. A liquid crystal layer 5 made of a liquid crystal including, for example, a liquid crystal layer 5 made of a polymer-liquid crystal composite film in which liquid crystal is enclosed in the pores of a porous polymer film to exhibit a scattering effect (or, for example, a guest-host effect). And a liquid crystal layer 5) made of a liquid crystal having

The optical writing type reflection type spatial light modulation element section SLM in the display image light output element DIO shown in FIG. 5 is the optical fiber plate (FOc) in the transmission type matrix liquid crystal display element section LCD described above. The substrate FOc on the side of the counter electrode 3 configured is also used as the substrate on the incident side of the writing light, and the optical fiber plate FOc is used as the substrate, the transparent electrode Et1, the photoconductive layer member PCL, the dielectric mirror DML, Light modulation material layer member PM
It is constituted by laminating L and the transparent substrate BP2. If necessary, a light shielding layer may be provided between the photoconductive layer member PCL and the dielectric mirror DML. An amorphous silicon film or a hydrogenated amorphous silicon film is used as the photoconductive layer member PCL. FIG. 7 is a diagram showing an example of spectral sensitivity characteristics of a hydrogenated amorphous silicon film, which has a wavelength of 700 nm.
The sensitivity is maximum.

As the photoconductive layer member PCL in the photo-writing type reflective spatial light modulation element section SLM in the display image light output element DIO, as shown in FIG.
When a hydrogenated amorphous silicon film having a spectral sensitivity characteristic showing the maximum sensitivity at 00 nm is used,
As the dichroic dye used in the structure of the liquid crystal layer 5 made of liquid crystal exhibiting the guest-host effect in the above-mentioned electric image writing type transmissive matrix liquid crystal display element LCD, a dichroic dye capable of absorbing light having a wavelength of 700 nm And the light incident from the light source of the writing light on the electric image writing type transmission matrix liquid crystal display element unit LCD in the display image light output element DIO is also filtered by the filter F in the wavelength band near 700 nm described above. If the light is set to, the optical writing is performed in a good state on the photoconductive layer member PCL of the optical writing reflection type spatial light modulator element SLM. The transparent electrodes Et1 and Et2 in the above-mentioned light-writing type reflective spatial light modulator element SLM are made of, for example, an ITO film, and the dielectric mirror DML is formed by alternately laminating thin films of Si, SiO2, TiO2 and the like. Can be configured by Further, the light modulation material layer member PML may be configured by using vertically aligned nematic liquid crystal having low wavelength dependence.

The display image light output element DIO having the above-described configuration outputs the display image light in the projection type image display device of the present invention shown in FIG. 1 or the projection type image display device of the present invention shown in FIG. Element DIO (DIOr, DIOg, D
Used as IOb). Now, the case where the display image light output element DIO having the configuration shown in FIG. 5 is used in the projection type image display device of the present invention shown in FIG. 1 will be described as follows. With respect to the electric image writing type transmission type matrix liquid crystal display element section LCD of the display image light output element DIO having the configuration shown in FIG.
The light emitted from the light source LSw of the writing light enters through the filter F and the polarizer PL. Filter F described above
Is a light of a predetermined wavelength band (for example, light of a wavelength band of 700 nm) which enables a good writing operation in the reflection type spatial light modulator element SLM of the optical writing type to be an electric image writing type. A material having a filtering characteristic that can be applied to the photoconductive layer member PCL of the photo-writing type reflection type spatial light modulation element section SLM via the transmission type matrix liquid crystal display element section LCD is used.

For the transmissive matrix liquid crystal display element section LCD in the display image light output element DIO, a time-series image signal to be displayed from the drive circuit DCT and a drive signal for scanning are provided. As described above, the light emitted from the light source LSw for writing light is supplied,
Through the filter F and the polarizer PL, the pixel electrodes 2, 2 made of a transparent conductive film of the electric image writing type transmission type matrix liquid crystal display element unit LCD, the gate electrode made of a conductive material, and the like are predetermined. When incident as writing light from the side of the substrate 1 on the side of the pixel electrode made of a transparent material formed in the pattern, the writing light is transmitted to the substrate of the transmissive matrix liquid crystal display element unit LCD in the display image light output element DIO.
The counter electrode 3 provided on the optical fiber FOc that is also used as the substrate on the incident side of the writing light of the optical writing type reflective spatial light modulator element SLM in the display image light output element DIO, and the substrate 1 on the pixel electrode side. The pixel electrode 2 provided on the
The voltage selectively applied to the liquid crystal layer 5 between 2 and 2 is changed two-dimensionally by the thin film transistor TFT for each pixel depending on the image signal to be displayed. For each pixel, the light whose intensity has been changed by the image signal is emitted to the optical fiber plate FOc, and the light is incident on the reflective spatial light modulator element SLM.

As described above, the light whose intensity is modulated by the image information to be displayed is used as the substrate on the side of the writing light in the reflection type spatial light modulator element SLM on the side of the optical fiber plate FOc. When incident on the photoconductive layer member PCL and applied to the transparent electrode Et1,
In the reflective spatial light modulator element SLM to which a predetermined voltage is supplied from the power source E between Et2, the electric resistance value of the photoconductive layer member PCL at the portion where the writing light WL is condensed is the above-mentioned incidence. The light modulation material layer member P is changed in accordance with the amount of light.
An electric field that changes corresponding to the light quantity of the writing light WL whose intensity is modulated by the information to be displayed is applied to the ML. On the transparent substrate BP2 side of the reflective spatial light modulator element SLM, the read light RL emitted from the light source LSr of the read light is incident via the polarization beam splitter PBS. The transparent substrate BP2 → the electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML reaches the dielectric mirror DML, and the reflected light of the read light reflected by the dielectric mirror DML → the light modulation material layer member PML → The light is emitted from the reflective spatial light modulator element SLM along the path of the electrode Et2 → the transparent substrate BP2 →.

The light flux of the readout light emitted from the reflection type spatial light modulation element section SLM reciprocates through the light modulation material layer member PML to which the electric field corresponding to the pixel information of the image to be displayed is applied. Since it is a luminous flux that has been generated, the luminous flux has its light state changed corresponding to the pixel information of the image to be displayed. Then, the constituent material of the light modulation material layer member PML in the reflective spatial light modulation element section SLM described above changes the polarization state or the birefringence state of the light passing therethrough in accordance with the electric field strength applied thereto. If it is changed, the reflected light flux of the reading light emitted from the reflective spatial light modulation element unit SLM as described above is sequentially reflected in the pixel information of the image to be displayed. It is in a state in which the state of polarization changes corresponding to the pixel information. Then, the light beam emitted from the reflection-type spatial light modulation element unit SLM is passed through the polarization beam splitter PBS to read out the light emitted from the reflection-type spatial light modulation element unit SLM forming the display image light output element. The reflected light flux of is changed to a state in which the intensity of light changes corresponding to the sequential pixel information in the pixel information of the image to be displayed. The light emitted from the polarization beam splitter PBS is imaged on the screen S by the projection lens Lp, and the image to be displayed is displayed on the screen S.

[0045]

As is apparent from the above description in detail, in the projection type image display device of the present invention, an electric image writing type transmission type matrix liquid crystal display element portion is provided on the counter electrode side. The substrate is composed of an optical fiber plate, and the liquid crystal layer to which a two-dimensional electric field intensity distribution according to image information is given can output light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution. The optical writing type reflective spatial light modulator is used as the optical writing type reflective spatial light modulator element, and the optical fiber plate is used as the writing light incident side substrate. Of the optical fiber plate in the image writing type transmissive matrix liquid crystal display element part and the optical fiber plate in the optical writing type reflective spatial light modulating element part Display image light output element integrally formed in a state in which both of them are butted to each other are optically connected, or the counter electrode side substrate is formed of an optical fiber plate, and the liquid crystal layer is formed as an image. By applying a two-dimensional electric field intensity distribution according to information, an electric image writing type of liquid crystal that is configured by using a liquid crystal capable of outputting light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution The transmission type matrix liquid crystal display element section and the optical fiber plate in the electric image writing type transmission matrix liquid crystal display element section are also used as a substrate on the side where the writing light is incident, so that Using a display image light output element in which an image writing type transmissive matrix liquid crystal display element section and an optical writing type reflective spatial light modulating element section are integrally configured, The intensity of the light emitted from the reflective spatial light modulator in the display image light output element is changed by the polarization beam splitter in correspondence with the sequential pixel information in the pixel information of the image to be displayed. As a state in which the projection image is projected on the screen by the projection lens to project the image to be displayed on the screen, in the projection type image display device of the present invention, Optical fiber plate without forming an unnecessary extra space between the electric image writing type transmission type matrix liquid crystal display element section and the optical writing type reflection type spatial light modulating element section in the display image light output element. Since it can be coupled by means of electrical transmission of information light from the electric image writing type transmissive matrix liquid crystal display element section to the optical writing type reflective spatial light modulating element section. Since the transmission can be performed without deteriorating the spatial frequency characteristic at times, the above-mentioned problems in the conventional device can be solved well, and a projection type image display device capable of displaying a high resolution image can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram of a projection type image display device of the present invention.

FIG. 2 is a block diagram of a projection type image display device of the present invention.

FIG. 3 shows a schematic configuration of an example of an electric image writing type transmissive matrix liquid crystal display element section which constitutes a part of a display image light output element used in the projection type image display apparatus of the present invention. It is a perspective view.

FIG. 4 is a perspective view showing a schematic configuration of an example of an optical writing type reflection type spatial light modulation element portion which constitutes a part of a display image light output element used in the projection type image display device of the present invention. is there.

FIG. 5 is a perspective view showing a schematic configuration of an example of a display image light output element used in the projection type image display device of the present invention.

FIG. 6 is a diagram for explaining a guest host mode.

FIG. 7 is an example diagram of sensitivity characteristic curves with respect to wavelengths of constituent members.

FIG. 8 is a cross-sectional view showing a configuration example of an optical writing type reflective spatial light modulation element portion.

FIG. 9 is a side view for explaining a conventional display image light output element.

FIG. 10 is a perspective view (partial perspective view) showing a display image light output element.

[Explanation of symbols]

LCD ... Electrical image writing type transmissive matrix liquid crystal display element section, SLM ... Optical writing type reflective spatial light modulating element section, FO, FOs, FOl, FOc ... Optical fiber plate, DIO, DIOr, DIOg, DIOb ... Display image light output element, TFT ... Thin film transistor TFT, P
CL ... Photoconductive layer member, Et1, Et2 ... Transparent electrode, E ... Power supply, WL ... Writing light, RL ... Read light, PML ... Light modulation material layer member, DML ... Dielectric mirror, BP1, BP2 ... Transparent substrate, PBS … Polarizing beam splitter, S… Screen,
LSr ... Readout light source, Lp ... Projection lens, 1 ... Pixel electrode side substrate, 2 ... Pixel electrode, 3 ... Counter electrode, 4 ... Substrate, 5 ... Liquid crystal layer,

Claims (4)

[Claims] 1. A reflection type spatial light modulator of optical writing type, which emits a light beam which is intensity-modulated by image information output from an electric image writing type transmission type matrix liquid crystal display element section and is to be displayed. Given as a writing light to the section, the light beam whose intensity is modulated by the image information which is the object of the display read from the above-mentioned optical writing type reflective spatial light modulating element section is projected on the screen by the projection optical system, A projection type image display device for displaying an image on a screen, wherein the counter electrode side substrate of the electric image writing type transmission type matrix liquid crystal display element section is composed of an optical fiber plate, and image information is provided. A liquid crystal layer to which a two-dimensional electric field intensity distribution according to is applied is constructed by using a liquid crystal capable of outputting light having an intensity distribution corresponding to the two-dimensional electric field intensity distribution. And the optical writing type reflective spatial light modulating element configured by using an optical fiber plate as the substrate on the side where the writing light enters, and the electrical image writing type transmission type described above. The end of the optical fiber plate of the matrix liquid crystal display element part and the end of the optical fiber plate of the optical writing type reflection type spatial light modulation element part are butted, and both are integrally connected in a state where they are optically connected. A projection-type image display device comprising a configured display image light output element. 2. A reflective spatial light modulator of an optical writing type, which emits a light beam whose intensity is modulated by image information which is output from an electric image writing type transmissive matrix liquid crystal display element section and which is to be displayed. Given as a writing light to the section, the light beam whose intensity is modulated by the image information which is the object of the display read from the above-mentioned optical writing type reflective spatial light modulating element section is projected on the screen by the projection optical system, A projection type image display device for displaying an image on a screen, wherein a two-dimensional electric field is obtained by using an optical fiber plate as a counter electrode side substrate and providing a two-dimensional electric field intensity distribution according to image information. An electric image writing type transmissive matrix liquid crystal display element section configured by using a liquid crystal layer capable of outputting light having an intensity distribution corresponding to the intensity distribution, The optical fiber plate in the image writing type transmissive matrix liquid crystal display element section,
A projection type image display device comprising a display image light output element integrally formed with a reflection type spatial light modulator element of an optical writing type which is used as a substrate on the side of incidence of writing light. 3. An electric image writing type transmissive matrix liquid crystal display element section comprising a liquid crystal layer constituted by using a liquid crystal having a guest-host effect as a liquid crystal layer is used. Projection type image display device. 4. An electric image writing type transmissive matrix liquid crystal display element section comprising a liquid crystal layer made of liquid crystal exhibiting a scattering effect is used.
Projection image display device.