CN109828406A - A kind of dot structure, display device, display device and projection display system - Google Patents
A kind of dot structure, display device, display device and projection display system Download PDFInfo
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Abstract
The present invention provides a kind of dot structure, display device, display device and projection display systems, including first substrate, the second substrate and the photic zone between first substrate and the second substrate；First substrate has the first reflectance coating towards the side of the second substrate, the second substrate has the second reflectance coating towards the side of first substrate, so that first substrate and the second substrate constitute Fabry-Perot-type cavity, and shown using the reflected light or transmitted light of Fabry-Perot-type cavity；First substrate has first electrode towards the side of the second substrate, the second substrate has second electrode towards the side of first substrate, to adjust euphotic refractive index by adjusting the electric field level between first electrode and second electrode, by adjusting the reflected light of euphotic refractive index adjustment Fabry-Perot-type cavity or the interference light intensity of transmitted light, to adjust the display brightness of dot structure, without polaroid, and then the structure of device is simplified, improves the integrated level of device.
Description
Technical field
The present invention relates to field of display technology, more specifically to a kind of dot structure, display device, display device
And projection display system.
Background technique
The 80% of mankind's external world acquisition information comes from vision, and therefore, display device is that modern people obtain information
Important channel, display technology is the important development direction of message area.With people have to the acquisition of information it is more higher
It is required that just having more expectations to the performance of display, the research of display technology and device is also just more and more important.
In existing display device, as shown in FIG. 1, FIG. 1 is a kind of existing displaying principle signals of liquid crystal display device
Figure, when between upper lower glass substrate that electric field is not added, incident light follows liquid crystal to do 90 through down polaroid, that is, polarizing layer 1
Degree torsion is simultaneously emitted from upper polaroid, that is, polarizing layer 2, so that display device is shown as illuminated state；When between upper lower glass substrate plus
When entering electric field, liquid crystal molecule can be rearranged so that incident light no longer reverses but maintains former direction outgoing, and the light being emitted
It can not be appeared by the masking of upper polaroid, that is, polarizing layer 2, so that display device is shown as dark-state.That is, existing display
Device needs to realize the modulation of display brightness using upper down polaroid, this results in the structure of existing display device more multiple
Miscellaneous, integrated level is lower.
Summary of the invention
In view of this, the present invention provides a kind of dot structure, display device, display device and projection display system, with
The integrated level for simplifying device architecture, improving device.
To achieve the above object, the invention provides the following technical scheme:
A kind of dot structure, including first substrate, the second substrate and be located at the first substrate and the second substrate
Between photic zone；
The first substrate has the first reflectance coating towards the side of the second substrate, and the second substrate is towards institute
The side for stating first substrate has the second reflectance coating, so that the first substrate and the second substrate constitute Fabry-Perot
Chamber, and shown using the reflected light or transmitted light of the Fabry-Perot-type cavity；
The first substrate has first electrode towards the side of the second substrate, and the second substrate is described in
The side of first substrate has second electrode, with big by adjusting the electric field between the first electrode and the second electrode
The small adjustment euphotic refractive index, adjusts the anti-of the Fabry-Perot-type cavity by adjusting the euphotic refractive index
The interference light intensity of light or transmitted light is penetrated, to adjust the display brightness of the dot structure.
Optionally, the photic zone includes liquid crystal layer, also, the first substrate is towards the side table of the liquid crystal layer
Face have the first alignment film, the second substrate towards a side surface of the liquid crystal layer have the second alignment film, described first
Alignment film is identical with the frictional direction of second alignment film.
Optionally, the material of the reflectance coating is MgF2、SiO2、Al2O3、ZrO2、TiO2Or one of materials such as ZnS
Or it is a variety of.
A kind of display device, including multiple dot structures, the dot structure are described in any item pixel knots as above
Structure.
Optionally, the thickness of the Fabry-Perot-type cavity of dot structure described in any two is identical.
Optionally, the display device includes multiple pixel units, and each pixel unit includes at least two pixels
The thickness of structure, the Fabry-Perot-type cavity of the dot structure in the same pixel unit is different.
A kind of projection display system, the display including narrow-band light source and on the narrow-band light source emitting light path
Part, the display device are display device as described above.
Optionally, the narrow-band light source includes the first narrow-band light source, the second narrow-band light source and third narrow-band light source, described
Display device includes the first display device, second display part and third display device, and the projection display system further includes the
One semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, third semi-transparent semi-reflecting lens and light-integrating subassembly；
First semi-transparent semi-reflecting lens are used to the first light that first narrow-band light source issues reflexing to described first
Display device；The first light that first display device issues first narrow-band light source reflects, and by specific light
The first strong beam projecting is to first semi-transparent semi-reflecting lens；First semi-transparent semi-reflecting lens are also used to show described first
First light of device outgoing is transmitted through the light-integrating subassembly；
Second semi-transparent semi-reflecting lens are used to the second light that second narrow-band light source issues reflexing to described second
Display device；The second light that the second display part issues second narrow-band light source reflects, and by specific light
The second strong beam projecting is to second semi-transparent semi-reflecting lens；Second semi-transparent semi-reflecting lens are also used to show described second
Second light of device outgoing is transmitted through the light-integrating subassembly；
The third semi-transparent semi-reflecting lens are used to the third light that the third narrow-band light source issues reflexing to the third
Display device；The third light that the third display device issues the third narrow-band light source reflects, and by specific light
Strong third beam projecting is to the third semi-transparent semi-reflecting lens；The third semi-transparent semi-reflecting lens are also used to show the third
The third light of device outgoing is transmitted through the light-integrating subassembly；
The light-integrating subassembly is used to first light, second light and the third light synthesizing light beam,
It is projected with the light beam using the synthesis.
Optionally, the narrow-band light source includes the first narrow-band light source, the second narrow-band light source and third narrow-band light source, described
Display device includes the first display device, second display part and third display device, and the projection display system further includes closing
Optical assembly；
First narrow-band light source is for emitting the first light；
Second narrow-band light source is for emitting the second light；
The third narrow-band light source is for emitting third light；
First light of certain light intensity is transmitted through the light-integrating subassembly by first display device；
Second light of certain light intensity is transmitted through the light-integrating subassembly by the second display part；
The third light of certain light intensity is transmitted through the light-integrating subassembly by the third display device；
The light-integrating subassembly is used to first light, second light and the third light synthesizing light beam,
It is projected with the light beam using the synthesis.
Optionally, first narrow-band light source is the laser light source that launch wavelength is 632.8nm feux rouges, and described first is aobvious
Show the Fabry-Perot-type cavity in device with a thickness of 3062nm, the reflectivity of the reflectance coating in first display device is
48%, the variation range of the refractive index of liquid crystal layer is 1.498~1.550 in first display device；
Second narrow-band light source is the laser light source that launch wavelength is 530nm green light, in the second display part
Fabry-Perot-type cavity with a thickness of 2564nm, the reflectivity of the reflectance coating in the second display part is 42%, described the
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in two display devices；
The third narrow-band light source is the laser light source that launch wavelength is 450nm blue light, in the third display device
Fabry-Perot-type cavity with a thickness of 2177nm, the reflectivity of the reflectance coating in the third display device is 37%, described the
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in three display devices.
A kind of display device, the display device including narrow-band light source and on the narrow-band light source emitting light path, institute
Stating display device is display device as described above.
Optionally, the narrow-band light source includes the first narrow-band light source, the second narrow-band light source and third narrow-band light source；It is described
Pixel unit includes the first dot structure, the second dot structure and third dot structure；
First dot structure is used to transmit the light that first narrow-band light source issues and is shown, and described second
Dot structure is used to transmit the light that second narrow-band light source issues and is shown that the third dot structure is for transmiting
The light that the third narrow-band light source issues is shown.
Optionally, first narrow-band light source is the laser light source that launch wavelength is 632.8nm feux rouges, first picture
The Fabry-Perot-type cavity of plain structure with a thickness of 3062nm, the reflectivity of the reflectance coating in first dot structure is
48%, the variation range of the refractive index of liquid crystal layer is 1.498~1.550 in first dot structure；
Second narrow-band light source is the laser light source that launch wavelength is 530nm green light, in second dot structure
Fabry-Perot-type cavity with a thickness of 2564nm, the reflectivity of the reflectance coating in second dot structure is 42%, described the
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in two dot structures；
The third narrow-band light source is the laser light source that launch wavelength is 450nm blue light, in the third dot structure
Fabry-Perot-type cavity with a thickness of 2177nm, the reflectivity of the reflectance coating in the third dot structure is 37%, described the
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in three dot structures.
Compared with prior art, the technical scheme provided by the invention has the following advantages:
Dot structure, display device, display device and projection display system provided by the present invention, by having first
The reflected light or transmission of the first substrate of reflectance coating and the Fabry-Perot-type cavity of the second substrate composition with the second reflectance coating
Light is shown, by adjusting the electric field level between first electrode and second electrode, adjustable euphotic refractive index,
So as to adjust the reflected light of Fabry-Perot-type cavity or the interference light intensity of transmitted light, and then does not need polaroid and can be adjusted
The display brightness of dot structure improves the integrated level of device to a certain extent, the thickness for reducing device, simplifies device
Structure.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
The embodiment of the present invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to the attached drawing of offer.
Fig. 1 is the displaying principle schematic diagram of existing liquid crystal display device；
Fig. 2 is a kind of structural schematic diagram of dot structure provided in an embodiment of the present invention；
Fig. 3 a and Fig. 3 b are the displaying principle schematic diagram of dot structure provided in an embodiment of the present invention；
Fig. 4 is the reflected light and transmitted light schematic diagram of Fabry-Perot-type cavity provided in an embodiment of the present invention；
Fig. 5 is the transmission and reflection characteristic of dot structure provided in an embodiment of the present invention with the change curve of phase difference；
Fig. 6 is that the transmission and reflection characteristic of dot structure provided in an embodiment of the present invention is bent with the variation of liquid-crystal refractive-index
Line chart；
Fig. 7 is a kind of overlooking structure diagram of display device provided in an embodiment of the present invention；
Fig. 8 is a kind of the schematic diagram of the section structure of display device provided in an embodiment of the present invention；
Fig. 9 is the schematic diagram of the section structure of another display device provided in an embodiment of the present invention；
Figure 10 is a kind of structural schematic diagram of reflective projection display system provided in an embodiment of the present invention；
Figure 11 is a kind of structural schematic diagram of transmissive projection display device provided in an embodiment of the present invention；
Figure 12 is the intensity in transmission adjustment curve figure that wavelength provided in an embodiment of the present invention is 632.8nm feux rouges；
Figure 13 is the reflected intensity adjustment curve figure that wavelength provided in an embodiment of the present invention is 632.8nm feux rouges；
Figure 14 is the intensity in transmission adjustment curve figure for the green light that wavelength provided in an embodiment of the present invention is 530nm；
Figure 15 is the reflected intensity adjustment curve figure for the green light that wavelength provided in an embodiment of the present invention is 530nm；
Figure 16 is the intensity in transmission adjustment curve figure that wavelength provided in an embodiment of the present invention is 450nm feux rouges；
Figure 17 is the reflected intensity adjustment curve figure that wavelength provided in an embodiment of the present invention is 450nm feux rouges；
Figure 18 is the structural schematic diagram of another reflective projection display system provided in an embodiment of the present invention.
Specific embodiment
It is core of the invention thought above, to keep the above objects, features and advantages of the present invention more obvious easily
Understand, following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clearly and completely
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of dot structures, as shown in Fig. 2, the dot structure includes first substrate 20,
Two substrates 21 and the photic zone 22 between the first substrate 20 and the second substrate 21.
Wherein, first substrate 20 has the first reflectance coating 23 towards the side of the second substrate 21, and the second substrate 21 is towards the
The side of one substrate 21 has the second reflectance coating 24, so that first substrate 20 and the second substrate 20 constitute Fabry-Perot-type cavity
(Fabry-P é rot, abbreviation FP chamber), and shown using the reflected light or transmitted light of Fabry-Perot-type cavity；
First substrate 20 has first electrode towards the side of the second substrate 21, and the second substrate 21 is towards first substrate 21
Side there is second electrode, by adjusting the electric field level adjustment photic zone 22 between first electrode and second electrode
Refractive index adjusts the reflected light of Fabry-Perot-type cavity or the interference light intensity of transmitted light by adjusting the refractive index of photic zone 22,
To adjust the display brightness of dot structure.
In the embodiment of the present invention, by adjusting photic zone 22 refractive index adjustment Fabry-Perot-type cavity reflected light or thoroughly
The interference light intensity of light is penetrated, adjusts dot structure by adjusting the reflected light of Fabry-Perot-type cavity or the interference light intensity of transmitted light
Display brightness is shown without being realized the adjustment of display brightness using polaroid compared to existing direct view liquid crystal
Device and silicon-base liquid crystal display device, improve the efficiency of light energy utilization and display brightness.
Optionally, as shown in Fig. 2, photic zone 22 includes liquid crystal layer, also, first substrate 20 is towards the side of liquid crystal layer
Surface has the first alignment film 25, and the second substrate 21 has the second alignment film 26 towards a side surface of liquid crystal layer.Further may be used
Selection of land, the liquid crystal in liquid crystal layer includes nematic liquid crystal, blue phase liquid crystal and ferroelectric liquid crystals etc..Certainly, in the embodiment of the present invention only
It is illustrated, is not limited to that so that photic zone 22 is liquid crystal layer as an example, optionally, the material of the photic zone 22 in the present invention
It can also be other phase-modulation electrooptical materials etc., and the variation of refractive index can occur by modulation for electrooptical material.
Optionally, first substrate 20 and the second substrate 21 are transparent substrate, are further chosen as transparent glass substrate or saturating
Bright plastic base.Optionally, the material of first electrode and second electrode be ITO (Indium Tin Oxide, tin indium oxide),
FTO (Fluorine Tin Oxide, fluorine doped indium oxide) or graphene (Graphene) etc., the first alignment film 25 and second is matched
To the material of film 26 be PI (Polyimide, polymer polyimide) or other are met light and excite polymerizable polymerized monomer.It needs
The first electrode in dot structure being noted that in the embodiment of the present invention is the electrode layer for covering 20 surface of first substrate,
Second electrode is the electrode layer for covering 21 surface of the second substrate.
Optionally, reflectance coating i.e. the first reflectance coating 23 and the second reflectance coating 24 are MgF2、SiO2、Al2O3、 ZrO2、TiO2Or
One of ZnS or the transparent dielectric film of a variety of formation, metallic reflective coating or metal clad stack the reflectance coating to be formed, also
It is to say, the first reflectance coating 23 or the second reflectance coating 24 can be SiO2、 Al2O3、ZrO2、TiO2Or a variety of compositions in ZnS is folded
Layer structure.
It, can also be with it should be noted that the material of the first reflectance coating 23 and the second reflectance coating 24 can be identical in the present invention
It is different.Equally, the reflectivity of the first reflectance coating 23 and the second reflectance coating 24 may be the same or different.But first is anti-
The reflectivity of film 23 and the second reflectance coating 24 is penetrated all in the range of 20%~60%, including endpoint value.Optionally, first is anti-
Penetrating the distance between film 23 and the second reflectance coating 23 i.e. thickness range of Fabry-Perot-type cavity is 1000nm~5000nm.
In one embodiment of the present of invention, the nematic phase with positive dielectric anisotropy is used with the liquid crystal in liquid crystal layer
It is illustrated for liquid crystal, the first alignment film 25 is identical with the frictional direction of the second alignment film 26, and liquid crystal layer is configured to put down
Row alignment nematic liquid crystal.
When voltage is not added in first electrode and second electrode, as shown in Figure 3a, FP intracavitary liquid crystal director is parallel to
Substrate 20 or 21 place planar alignments, when polarization direction vertical incidence of the light 0 to be parallel to liquid crystal director, liquid-crystal refractive-index
For extra-ordinary index of refraction ne；When making alive in first electrode and second electrode, as shown in Figure 3b, under the action of electric field E, when
When liquid crystal deflection reaches saturation, liquid crystal director is approximately perpendicular to substrate 20 or 21 place planes, uses the incidence in same direction
When light 0 is incident, liquid-crystal refractive-index becomes ordinary index of refraction no.That is, by changing first electrode in the embodiment of the present invention
Liquid-crystal refractive-index is realized from n so that the rotation between 0 ° -90 ° occurs for liquid crystal molecule with the voltage in second electrodeeTo no
Consecutive variations, to not only realize the phase delay to light.
As shown in figure 4, incident light 0 can enter FP chamber in the intracavitary progress multiple reflections of FP and repeatedly refraction, incident light 0
When be divided into the reflected beams 1 and deflecting light beams, which and is divided into transmitted light beam while lower surface is reflected
1' and the reflected beams.It reflects and reflects repeatedly, infinite multiple the reflected beams 1,2,3,4 ... and infinite more can be obtained
A transmitted light beam 1', 2', 3', 4' ....Wherein, n is the refractive index of the intracavitary medium of FP, and such as the refractive index of the intracavitary liquid crystal of FP, d is
The thickness of FP chamber, θ are the angle of FP intracavitary light and normal.
Wherein, either the reflected beams or transmitted light beam have fixed phase difference between adjacent two-beamAs having fixed phase difference between the reflected beams 1 and 2 and between transmitted light beam 1' and 2'Meet the relevant condition of light, thus can interfere.
Enable r and t be respectively light outside FP chamber to FP intracavitary amplitude reflectance and transmissivity, r' and t' be respectively light from
The intracavitary amplitude reflectance and transmissivity to outside FP chamber of FP.Since the refractive index of FP chamber media of both sides is identical, meet Stokes
Reverse-power, therefore, r=-r', t2+ tt'=1.
Assuming that the amplitude of incident light 0 is A, reflected light complex amplitude isTransmitted light complex amplitude isEach beam then can be obtained
The complex amplitude of reflected light and each beam transmitted light:
......
...,
Wherein, the complex amplitude of reflected light 1Negative sign afterwards is damaged from half-wave.
Total complex amplitude of reflected lightForThe total light intensity I of reflected lightRFor
Total complex amplitude of transmitted lightForThe total light intensity I of transmitted lightTFor
Wherein, j=1,2,3,4 ....
When not considering to absorb, optical power conservation leads to total light intensity I0Conservation then has IR+IT=I0.Since reflected light 1 is deposited
It is damaged in half-wave, considers preferential calculating total transmission light intensity IT, then pass through IR=I0-ITObtain total reflection light intensity IR。
It can be obtained by analyzing above, total complex amplitude of transmitted lightThe sum of the series
ForThe then total light intensity I of transmitted lightTAre as follows:
Wherein, R=r2For the intensity reflectance of FP chamber upper and lower surfaces, as the first reflecting layer 23 and the second reflecting layer
24 intensity reflectance, I0=A2For the total light intensity of incident light.
The total light intensity I of reflected lightRAre as follows:
As shown in figure 5, Fig. 5 is the transmission and reflection characteristic of the FP chamber of dot structure with the change curve of phase difference.It is used
Parameter setting are as follows: the reflectivity R=48% of reflectance coating, wavelength X=632.8nm of incident light, thickness d=3062nm of FP chamber,
Angle theta=0 ° of FP intracavitary light and normal.Wherein, solid line is coverage diagram, and dotted line is transmission characteristic.It needs
Illustrate, dot structure provided in an embodiment of the present invention both can use the reflection light display image of FP chamber, also can use
The transmission light display image of FP chamber.
When a branch of light intensity is I0Incident light when impinging perpendicularly on dot structure surface, reflected if choosing by upper surface
Reflected light 1,2,3,4 ... show image, intensity reflectance IR/I0It may be expressed as:
Wherein,For the fineness of FP chamber, δ is the adjacent two beam reflection being emitted at the first reflectance coating 23
The phase difference of light；R is the reflectivity of the first reflectance coating 23 and the second reflectance coating 24；λ is the wave of the incident light of narrow-band light source outgoing
It is long；nLCFor the refractive index of nematic liquid crystal；D is the distance between the first reflectance coating 23 and the second reflectance coating 24, is also FP chamber
Thickness；θ is angle, that is, incident light of the intracavitary light of FP and normal at the inclination angle of the intracavitary multiple reflections of FP, herein, θ=0 °.
It can be seen that from the solid line in Fig. 5 when phase difference δ is the odd-multiple of π, intensity reflectance IR/I0Reach maximum
Value, choosing is herein as the illuminated state for showing image；When phase difference δ is the even-multiple of π, intensity reflectance IR/I0Reach minimum value,
Choosing is herein as the dark-state for showing image.Such as under a certain voltage, the positive benefit of the difference of the reflective phase as caused by liquid-crystal refractive-index
In the position of δ/π=30, then show that image is complete dark.By changing applied voltage, so that the refractive index of liquid crystal changes,
Phase difference δ changes, intensity reflectance IR/I0Start to increase, when the phase difference as caused by liquid-crystal refractive-index changes π, arrive
Up to the position of δ/π=29, intensity reflectance I at this timeR/I0Maximum, display image are most bright.And between 29 < δ/π < 30, it can be used as
Intermediate luminance is shown.
Using same incident light vertical incidence dot structure surface, the transmission that lower surface transmits can be equally chosen
Light 1', 2', 3', 4' ... show image, transmisivity IT/I0It may be expressed as:
Equally,For the fineness of FP chamber, δ is the adjacent two beam transmission being emitted at the second reflectance coating 24
The phase difference of light；R is the reflectivity of the first reflectance coating 23 and the second reflectance coating 24；λ is the wave of the incident light of narrow-band light source outgoing
It is long；nLCFor the refractive index of nematic liquid crystal；D is the distance between the first reflectance coating 23 and the second reflectance coating 24, is also FP chamber
Thickness；θ is angle, that is, incident light of the intracavitary light of FP and normal at the inclination angle of the intracavitary multiple reflections of FP, herein, θ=0 °.
As shown in phantom in Figure 5, when phase difference δ is the even-multiple of π, transmisivity IT/I0Reach maximum value, selects this
Locate the illuminated state as display image；When phase difference δ is the odd-multiple of π, transmisivity IT/I0Reach minimum value, choosing is herein
Dark-state as display image；Assuming that under a certain voltage, the transmitted light phase difference as caused by liquid-crystal refractive-index be exactly in δ/
The position of π=30 then shows that image is all light.By changing applied voltage, phase difference δ is caused to send out by liquid-crystal refractive-index change
Changing, transmisivity IT/I0Start to reduce, when the phase difference caused by liquid-crystal refractive-index changes π, reaches the position of δ/π=29
It sets, this moment transmisivity IT/I0Minimum, display image are most dark.And between 29 < δ/π < 30, then it can be used as intermediate luminance
Display.
As shown in fig. 6, the curve that the reflection and transmission characteristic that Fig. 6 is dot structure changes with liquid-crystal refractive-index.Parameter used
Setting are as follows: R=48%, λ=632.8nm, d=3062nm, θ=0 °.Wherein, solid line indicates that coverage diagram, dotted line indicate
Transmission characteristic.From Fig. 6 it can also be seen that with liquid-crystal refractive-index change, the light intensity of transmitted light or the light of reflected light
It can also change by force.
That is, by applying voltage in first electrode and second electrode, can make in the embodiment of the present invention
The refractive index of liquid crystal is in ne~noBetween change, when the reflected light of FP chamber or the phase difference of transmitted light become between (29 π, 30 π)
When change, change the display brightness of dot structure between most bright and most dark, thus the case where not needing polaroid
Under, realize the adjustment of dot structure display brightness.
It should be noted that the dot structure in the embodiment of the present invention is only modulated monochromatic light, for example, only to red
Light, blue light or green light are modulated.Certainly, when being modulated to the monochromatic light of different colours, need to parameter to dot structure into
Row adjustment, details are not described herein.
The embodiment of the invention also provides a kind of display devices, as shown in fig. 7, the display device includes multiple pixel knots
Structure 70, the dot structure 70 are the dot structure that any of the above-described embodiment provides.It should be noted that the embodiment of the present invention mentions
The display device of confession further includes the driving circuit etc. of the first electrode and second electrode offer voltage into dot structure, herein
It repeats no more.
Optionally, as shown in figure 8, in display device the Fabry-Perot-type cavity of any two dot structure 70 thickness d
It is identical, so that the FP chamber of all dot structures 70 constitutes a big FP chamber.It should be noted that the display device is single
Color display device, if the display device is that feux rouges display device, green light display device, blue light display device or other colors are aobvious
Show device.
Optionally, display device includes multiple pixel units, and each pixel unit includes at least three dot structures, together
The thickness of the Fabry-Perot-type cavity of dot structure in one pixel unit is different.It should be noted that the present invention is real
Applying can be by keeping the distance between first substrate 20 and the second substrate 21 different, so that the thickness of Fabry-Perot-type cavity in example
It is different.
As shown in figure 9, each pixel unit 9 includes the first dot structure 90, the second dot structure 91 and third pixel knot
The thickness of structure 92, the FP chamber of the first dot structure 90, the second dot structure 91 and third dot structure 92 is different, so that
First dot structure 90, the second dot structure 91 and third dot structure 92 transmit the monochromatic light of different colours.Such as the first pixel
Structure 90 transmits blue light, the second dot structure 91 transmission green light, third dot structure 92 and transmits feux rouges, is based on this, each pixel
After feux rouges, blue light and green light mixing in unit, color image can be shown.That is, display device shown in Fig. 9 is
It can show the display device of color image.
It should be noted that in the configuration shown in fig. 8, first electrode and second electrode can be the entire bases of covering
The flood electrode of plate, and in Fig. 8 and structure shown in Fig. 9, being also possible to first electrode is to cover the flood of first substrate 20
Electrode, second electrode are the single-piece electrode in each dot structure, and the second electrode of different pixels structure is mutually indepedent,
That is, first electrode is equivalent to the public electrode in available liquid crystal display device, it is aobvious that second electrode is equivalent to available liquid crystal
Pixel electrode in showing device.Based on this, each picture can individually be controlled by the electric field between first electrode and second electrode
The refractive index of liquid crystal in plain structure to control the gray scale of each dot structure, and then controls the display figure of whole display part
As being to need image to be shown.
The embodiment of the invention also provides a kind of projection display system, including narrow-band light source and go out positioned at narrow-band light source
The display device in optical path is penetrated, which is monochrome display part shown in Fig. 8.Optionally, which can
To be applied in the projection display apparatus such as projector or TV.Wherein, projector include movie theatre, home theater and teaching or
Preceding throwing or rear projector for projecting used in exhibition room.Optionally, which is laser light source, and certainly, the present invention simultaneously not only limits
In this, narrow-band light source may be LED light source etc. in other embodiments.
In the embodiment of the present invention, illuminated using narrow-band light source, due to the line width very little (about 1~2nm) of narrow-band light source, and
The reflectivity of FP chamber is not also high, therefore, so that the full width at half maximum (about 10nm) of FP chamber is very wide relative to the line width of light source,
" optical filtering " is carried out using wide modulated spectrum of the narrow light source luminescent spectrum to Fabry-Perot-type cavity, has been obviously improved display device
Color domain coverage ratio.
It is as shown in Figure 10 reflective projection display system, narrow-band light source includes the first narrow-band light source 101, the second narrowband
Light source 102 and third narrow-band light source 103, display device include that the first display device 104, second display part 105 and third are aobvious
Show device 106, projection display system further includes that the first semi-transparent semi-reflecting lens 107, the second semi-transparent semi-reflecting lens 108, third are semi-transparent semi-reflecting
Mirror 109 and light-integrating subassembly 110.
Wherein, the first semi-transparent semi-reflecting lens 107 are used to the first light that the first narrow-band light source 101 issues reflexing to first
Display device 104；The first light that first display device 104 issues the first narrow-band light source 101 reflects, and will be specific
First beam projecting of light intensity is to the first semi-transparent semi-reflecting lens 107；First semi-transparent semi-reflecting lens 107 are also used to the first display device
First light of 104 outgoing is transmitted through light-integrating subassembly 110；
Second semi-transparent semi-reflecting lens 108 are used to the second light that the second narrow-band light source 102 issues reflexing to second display
Part 105；The second light that second display part 105 issues the second narrow-band light source 102 reflects, and by certain light intensity
Second beam projecting to the second semi-transparent semi-reflecting lens 108；Second semi-transparent semi-reflecting lens 108 are also used to for second display part 105 being emitted
The second light be transmitted through light-integrating subassembly 110；
Third semi-transparent semi-reflecting lens 109 are used to the third light that third narrow-band light source 103 issues reflexing to third display
Part 106；The third light that third display device 106 issues third narrow-band light source 103 reflects, and by certain light intensity
Third beam projecting is to third semi-transparent semi-reflecting lens 109；Third semi-transparent semi-reflecting lens 109 are also used to for third display device 106 being emitted
Third light be transmitted through light-integrating subassembly 110；
Light-integrating subassembly 110 is used to the first light, the second light and third light synthesizing light beam, to utilize synthesis
Light beam is projected.
In another embodiment of the invention, as shown in figure 11, projection display system can also show for transmissive projection
System, narrow-band light source include the first narrow-band light source 111, the second narrow-band light source 112 and third narrow-band light source 113, display device packet
The first display device 114, second display part 115 and third display device 116 are included, projection display system further includes light combination group
Part 117 and projecting lens 118.
Wherein, the first narrow-band light source 111 is for emitting the first light；Second narrow-band light source 112 is for emitting the second light
Line；Third narrow-band light source 113 is for emitting third light；First light of certain light intensity is transmitted through by the first display device 114
Light-integrating subassembly 117；Second light of certain light intensity is transmitted through light-integrating subassembly 117 by second display part 115；Third display
The third light of certain light intensity is transmitted through light-integrating subassembly 117 by part 116；Light-integrating subassembly 117 is used for the first light, the second light
Line and third light synthesize light beam, to be projected using the light beam of synthesis.
Optionally, the first narrow-band light source is the laser light source that launch wavelength is 632.8nm feux rouges, in the first display device
The thickness d of Fabry-Perot-type cavity be 3062nm, the reflectivity R of the reflectance coating in the first display device is 48%, and first is aobvious
The variation range for showing the refractive index n of liquid crystal layer in device is 1.498~1.550；
Second narrow-band light source is the laser light source that launch wavelength is 530nm green light, the Fabry-in second display part
The thickness d of Perot cavity is 2564nm, and the reflectivity R of the reflectance coating in second display part is 42%, liquid in second display part
The variation range of the refractive index n of crystal layer is 1.498~1.550；
Third narrow-band light source is the laser light source that launch wavelength is 450nm blue light, the Fabry-in third display device
The thickness d of Perot cavity is 2177nm, and the reflectivity R of the reflectance coating in third display device is 37%, liquid in third display device
The variation range of the refractive index n of crystal layer is 1.498~1.550.
In the present embodiment, liquid crystal refractive index in the state that voltage is not added is 1.550.
When the first narrow-band light source 101 is the laser light source that launch wavelength is 632.8nm feux rouges, in the first display device 104
The thickness d of Fabry-Perot-type cavity be 3062nm, the reflectivity R of the reflectance coating in the first display device 104 is 48%, is chosen
The transmitted light of FP chamber shows that as shown in figure 12, solid line, thick dashed line and dotted line are respectively refractive index n=1.550, n of liquid crystal
The case where=1.540 and n=1.498, thin straight dotted line correspond to feux rouges 632.8nm wavelength, it can be clearly seen that, when voltage is not added,
Solid line and thin straight dotted line point of intersection light intensity are maximum, are shown as illuminated state, are herein just the central wavelength of FP chamber, at this time the half of FP chamber
High overall with about 10nm (is determined) that the line width (about 2nm) relative to light source is very big, and light utilizes effect by reflectivity R and thickness d
Rate is close to 100%.When addition voltage makes n=1.498, the point of intersection light intensity of dotted line and thin straight dotted line is minimum, is shown as dark
State.So display brightness may be implemented and exist when adjusting voltage changes liquid crystal effective refractive index between 1.498 to 1.550
Bright dark variation.
Same parameter, when being shown with the reflected light of FP chamber, as shown in figure 13, solid line, thick dashed line and dotted line difference
For liquid crystal refractive index n=1.550, n=1.540 and n=1.498 the case where, thin straight dotted line corresponds to feux rouges 632.8nm wavelength,
, it is apparent that solid line and thin straight dotted line intersection point light intensity are minimum when voltage is not added, it is shown as dark-state.Make when voltage is added
When n=1.498, the intersection point light intensity of dotted line and thin straight dotted line is maximum, is shown as illuminated state.And reflection spectral line is corresponded at this time, half is high
Overall with is very wide, much larger than the line width of light source, the feux rouges for being wavelength 632.8nm for this narrow linewidth central wavelength, maximum luminous energy
Utilization rate is about 88% or so.When adjusting voltage changes liquid crystal effective refractive index between 1.498 to 1.550, Ke Yishi
Existing bright dark variation.
By the above parameter available one single pixel structure for red light modulation, when integrating multiple single pixel knots
A red modulation panel be can be obtained by when structure to get to the first display device 104.
When the second narrow-band light source 102 is the laser light source that launch wavelength is 530nm green light, in second display part 105
The thickness d of Fabry-Perot-type cavity is 2564nm, when the reflectivity R of the reflectance coating in second display part 105 is 42%, is chosen
The transmitted light of FP chamber shows that as shown in figure 14, solid line, thick dashed line and dotted line are n=1.550, n=1.540, n=1.498
The case where, thin straight dotted line corresponds to green light 530nm wavelength, it can be clearly seen that, when voltage is not added, solid line and thin straight dotted line intersection point
Light intensity is maximum, is shown as illuminated state, is herein just the central wavelength of above-mentioned parameter FP chamber, at this time the full width at half maximum of FP chamber about 10nm,
Line width (about 2nm) relative to light source is very big, does not consider to absorb scattering effect, and light utilization ratio is close to 100%.When adding
When entering voltage and making n=1.498, the intersection point light intensity of dotted line and thin straight dotted line is minimum, is shown as dark-state.So adjusting voltage makes
When liquid crystal effective refractive index changes between 1.498 to 1.550, bright dark variation may be implemented.
As shown in figure 15, it is shown with reflected light, similarly, it can be clearly seen that, when voltage is not added, solid line and thin straight void
Line intersection point light intensity is minimum, is shown as dark-state.When addition voltage makes n=1.498, the intersection point light intensity of dotted line and thin straight dotted line
Maximum is shown as illuminated state.And corresponding reflection spectral line, full width at half maximum are very wide at this time, much larger than the line width of light source, for this
The green light that kind narrow linewidth central wavelength is wavelength 530nm, the maximum efficiency of light energy utilization is about 83% or so.So adjusting voltage
When changing liquid crystal effective refractive index between 1.498 to 1.550, bright dark variation may be implemented.
By the above parameter available one single pixel structure for green light modulation, when integrating multiple single pixel knots
A green light modulation panel be can be obtained by when structure to get second display part 105 is arrived.
When third narrow-band light source 103 is the laser light source that launch wavelength is 450nm blue light, in third display device 106
The thickness d of Fabry-Perot-type cavity is 2177nm, when the reflectivity R of the reflectance coating in third display device 106 is 37%, is chosen
The transmitted light of FP chamber shows that as shown in figure 16, solid line, thick dashed line and dotted line are n=1.550, n=1.540, n=1.498
The case where, thin straight dotted line corresponds to blue light 450nm wavelength, it can be clearly seen that, when voltage is not added, solid line and thin straight dotted line intersection point
Light intensity is maximum, is shown as illuminated state, is herein just the central wavelength of above-mentioned parameter FP chamber, at this time the full width at half maximum of FP chamber about 10nm,
Line width (about 2nm) relative to light source is very big, does not consider to absorb scattering effect, and light utilization ratio is close to 100%.When adding
When entering voltage and making n=1.498, the intersection point light intensity of dotted line and thin straight dotted line is minimum, is shown as dark-state.So adjusting voltage makes
When liquid crystal effective refractive index changes between 1.498 to 1.550, bright dark variation may be implemented.
As shown in figure 17, it is shown with reflected light, similarly, it can be clearly seen that, when voltage is not added, solid line and thin straight void
Line intersection point light intensity is minimum, is shown as dark-state.When addition voltage makes n=1.498, the intersection point light intensity of dotted line and thin straight dotted line
Maximum is shown as illuminated state.And corresponding reflection spectral line, full width at half maximum are very wide at this time, much larger than the line width of light source, for this
The green light that kind narrow linewidth central wavelength is wavelength 450nm, the maximum efficiency of light energy utilization is about 78% or so.So adjusting voltage
When changing liquid crystal effective refractive index between 1.498 to 1.550, bright dark variation may be implemented.
By the above parameter available one single pixel structure for blue light modulation, when integrating multiple single pixel knots
A blue light modulation panel be can be obtained by when structure to get second display part 106 is arrived.
It should be noted that the conversion speed of nematic liquid crystal is about in millisecond magnitude, that is, this mode modulate it is aobvious
Analog form can be referred to as by showing.The refractive index of liquid crystal is adjusted by voltage, each refractive index corresponds to different luminous intensities, real
Existing different display effect.
It should also be noted that, enabling the π of δ=4 neThe π of d/ λ=30, i.e. phase difference are the even-multiple of π, due to the wavelength X of feux rouges
Thickness d=3062nm of=632.8nm, FP chamber, when voltage is not added, the refractive index n of liquid crystaleAbout 1.550, transmission-type can be shown
Illuminated state, as the π of δ '=4 neffThe π of d/ λ=29, that is, phase difference reduce π, are just changed to dark-state then showing, at this point, neff=
The 29 π * π of λ/4 d=1.498.Blue light and the calculating of green light are also similar, and details are not described herein.
Since incident light is vertical incidence device surface (i.e. θ=0 °) in above-mentioned reflective projection display system, because
This, is distinguished using semi-transparent semi-reflecting lens in the ipsilateral incident light of modulation panel and reflected light, but semi-transparent semi-reflecting lens in system
Though using the incident light and modulated emergent light that distinguish into modulation panel, light it is every by a semi-transparent semi-reflecting lens when
Have the luminous energy loss of half.Need to improve the luminous intensity of narrow-band light source at this time to reach higher brightness.Such case
When being only limitted to vertical incidence.And works as and modulation face is incident to as shown in figure 18 with (1~2 °) of a low-angle incident device surface
The incident light of plate and modulated emergent light are just no longer overlapped, because that can realize light modulation without semi-transparent semi-reflecting lens.With small
Angle is incident, and modulation thought describes identical, but the relevant parameter and Figure 12-of above-mentioned device with above-described embodiment
Adjustment curve in 17 can change, this is that those skilled in the art thought according to the present invention can be expected easily
's.
The embodiment of the invention also provides a kind of display device, which includes narrow-band light source and is located at described
Display device on narrow-band light source emitting light path, the display device are display device as shown in Figure 9.Optionally, the display
Device can for TV, wear display equipment, video glass, mobile phone, computer, wrist-watch etc., wherein TV include laser television,
The back projection TVs such as large-curtain projecting TV set.
Wherein, narrow-band light source includes the first narrow-band light source, the second narrow-band light source and third narrow-band light source；In pixel unit
At least three dot structures include the first dot structure 90, the second dot structure 91 and third dot structure 92；First pixel
The light that structure 90 is used to transmit the sending of the first narrow-band light source is shown that the second dot structure 91 is for transmiting the second narrowband
The light that light source issues is shown that the light that third dot structure 92 is used to transmit the sending of third narrow-band light source is shown.
Optionally, the first narrow-band light source be emit the light source of feux rouges, the second narrow-band light source is the light source for emitting green light, the
Three narrow-band light sources are the light source for emitting blue light.Still optionally further, the first narrow-band light source, the second narrow-band light source and third narrowband
Light source is laser light source, and certainly, the present invention is not limited to this, in other embodiments, the first narrow-band light source, the second narrowband
Light source and third narrow-band light source can also be LED light source etc..
Optionally, the first narrow-band light source is the laser light source that launch wavelength is 632.8nm feux rouges, the first dot structure
Fabry-Perot-type cavity with a thickness of 3062nm, the reflectivity of the reflectance coating in the first dot structure is 48%, the first pixel knot
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in structure；
Second narrow-band light source is the laser light source that launch wavelength is 530nm green light, the Fabry-in the second dot structure
Perot cavity with a thickness of 2564nm, the reflectivity of the reflectance coating in the second dot structure is 42%, liquid crystal in the second dot structure
The variation range of the refractive index of layer is 1.498~1.550；
Third narrow-band light source is the laser light source that launch wavelength is 450nm blue light, the Fabry-in third dot structure
Perot cavity with a thickness of 2177nm, the reflectivity of the reflectance coating in third dot structure is 37%, liquid crystal in third dot structure
The variation range of the refractive index of layer is 1.498~1.550.
Light source and the corresponding relationship of transmissivity are as shown in Figure 12 to Figure 17, and details are not described herein.
In the red transmission mode of wavelength 632.8nm as an example, as shown in figure 12, most bright state is in refractive index n=
When 1.550, light source transmissivity at central wavelength 632.8nm is 1, but light source has certain line width, in the intensity of 632.8nm
Maximum, and intensity is different between (such as 631nm to 635nm) elsewhere.The transmissivity of practical light can be from this formula
ReactionWherein P (λ) is the intensity distribution function of light source, and T (λ) is the transmittance function of device, λ1-λ2
The wave-length coverage of corresponding narrow-band light source luminescent spectrum.That is, correspond to light source each wavelength, FP chamber have one it is right
The transmissivity answered, such as transmissivity is that transmissivity is that transmissivity is 0.95 at 1,633nm at 0.9,632.8nm at 632nm, is used
Such weighted average carrys out the transmissivity of calculating device.In illuminated state n=1.550, transmissivity is about 97%, and is corresponded to
When dark-state n=1.498, transmissivity is about 12%, to obtain contrast CFP=97%/12%=8.1:1.
And when being shown with reflected light, in n=1.550, light source reflects most dark state at central wavelength 632.8nm
Rate is 0.Namely light source is minimum in the reflected intensity of 632.8nm, and strong in (such as 631nm to 635nm) elsewhere reflection
Degree is different.The reflectivity of practical light can be reacted from this formulaWherein P (λ) is the intensity spectrum of light source
Line function, R (λ) are device reflectivity functions.That is, correspond to light source each wavelength, FP chamber have one it is corresponding
Reflectivity, with such weighted average come the reflectivity of calculating device.In dark-state n=1.550, reflectivity is about 3%,
And when illuminated state n=1.498, reflectivity is about 88%, to obtain contrast CFP=88%/3%=29.3:1.
In addition to all of above bright dark-state referred to, other positions can be also chosen as illuminated state or dark-state.It is saturating with Figure 12
It penetrates for spectral line, when voltage is not added, the refractive index of liquid crystal is n=1.550, and display is most bright, increases voltage when passing through, so that liquid
Brilliant refractive index is begun to decrease to close to 1.498 nearby (such as n=1.500), can also be used as the dark-state of display here；Together
Sample, by taking Figure 13 reflects spectral line as an example, when voltage is not added, the refractive index of liquid crystal is n=1.550, and display is most dark, is increased when passing through
Voltage, so that the refractive index of liquid crystal begins to decrease to the illuminated state close to (such as n=1.500) near 1.498 as display.With this
Mode reduces the variation range of liquid-crystal refractive-index while sacrificing a small amount of contrast, and then reduces required voltage, reduces
Power consumption.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with its
The difference of his embodiment, the same or similar parts in each embodiment may refer to each other.To the disclosed embodiments
Above description enables those skilled in the art to implement or use the present invention.Various modifications to these embodiments are to this
It will be apparent for the professional technician in field, the general principles defined herein can not depart from this hair
In the case where bright spirit or scope, realize in other embodiments.Therefore, the present invention is not intended to be limited to illustrated herein
These embodiments, and be to fit to the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. a kind of dot structure, which is characterized in that including first substrate, the second substrate and be located at the first substrate and described
Photic zone between the second substrate；
The first substrate has the first reflectance coating towards the side of the second substrate, and the second substrate is towards described first
The side of substrate has the second reflectance coating, so that the first substrate and the second substrate constitute Fabry-Perot-type cavity, and benefit
It is shown with the reflected light of the Fabry-Perot-type cavity or transmitted light；
The first substrate has first electrode towards the side of the second substrate, and the second substrate is towards first base
The side of plate has second electrode, to adjust institute by adjusting the electric field level between the first electrode and the second electrode
State euphotic refractive index, by adjusting the euphotic refractive index adjust the Fabry-Perot-type cavity reflected light or thoroughly
The interference light intensity of light is penetrated, to adjust the display brightness of the dot structure.
2. dot structure according to claim 1, which is characterized in that the photic zone includes liquid crystal layer, also, described
One substrate has the first alignment film towards a side surface of the liquid crystal layer, and the second substrate is towards the side of the liquid crystal layer
Surface has the second alignment film, and first alignment film is identical with the frictional direction of second alignment film.
3. dot structure according to claim 1, which is characterized in that the material of the reflectance coating is MgF2、SiO2、Al2O3、
ZrO2、TiO2Or one of materials such as ZnS or a variety of.
4. a kind of display device, which is characterized in that including multiple dot structures, the dot structure is that claims 1 to 3 is any
Dot structure described in.
5. display device according to claim 4, which is characterized in that the Fabry-Perot of dot structure described in any two
The thickness of sieve chamber is identical.
6. display device according to claim 4, which is characterized in that the display device includes multiple pixel units, often
A pixel unit includes at least two dot structures, the Fabry-Perot of the dot structure in the same pixel unit
The thickness of sieve chamber is different.
7. a kind of projection display system, which is characterized in that including narrow-band light source and be located on the narrow-band light source emitting light path
Display device, the display device be claim 5 described in display device.
8. system according to claim 7, which is characterized in that the narrow-band light source includes the first narrow-band light source, second narrow
Band light source and third narrow-band light source, the display device include the first display device, second display part and third display device,
The projection display system further includes the first semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, third semi-transparent semi-reflecting lens and light-integrating subassembly；
First semi-transparent semi-reflecting lens are used to reflex to the first light that first narrow-band light source issues first display
Device；The first light that first display device issues first narrow-band light source reflects, and by certain light intensity
First beam projecting is to first semi-transparent semi-reflecting lens；First semi-transparent semi-reflecting lens are also used to first display device
The first light penetrated is transmitted through the light-integrating subassembly；
Second semi-transparent semi-reflecting lens are used to reflex to the second light that second narrow-band light source issues second display
Device；The second light that the second display part issues second narrow-band light source reflects, and by certain light intensity
Second beam projecting is to second semi-transparent semi-reflecting lens；Second semi-transparent semi-reflecting lens are also used to the second display part
The second light penetrated is transmitted through the light-integrating subassembly；
The third semi-transparent semi-reflecting lens are shown for the third light that the third narrow-band light source issues to be reflexed to the third
Device；The third light that the third display device issues the third narrow-band light source reflects, and by certain light intensity
Third beam projecting is to the third semi-transparent semi-reflecting lens；The third semi-transparent semi-reflecting lens are also used to the third display device
The third light penetrated is transmitted through the light-integrating subassembly；
The light-integrating subassembly is used to first light, second light and the third light synthesizing light beam, with benefit
It is projected with the light beam of the synthesis.
9. system according to claim 7, which is characterized in that the narrow-band light source includes the first narrow-band light source, second narrow
Band light source and third narrow-band light source, the display device include the first display device, second display part and third display device,
The projection display system further includes light-integrating subassembly；
First narrow-band light source is for emitting the first light；
Second narrow-band light source is for emitting the second light；
The third narrow-band light source is for emitting third light；
First light of certain light intensity is transmitted through the light-integrating subassembly by first display device；
Second light of certain light intensity is transmitted through the light-integrating subassembly by the second display part；
The third light of certain light intensity is transmitted through the light-integrating subassembly by the third display device；
The light-integrating subassembly is used to first light, second light and the third light synthesizing light beam, with benefit
It is projected with the light beam of the synthesis.
10. system according to claim 8 or claim 9, which is characterized in that first narrow-band light source is that launch wavelength is
The laser light source of 632.8nm feux rouges, Fabry-Perot-type cavity in first display device with a thickness of 3062nm, described
The reflectivity of reflectance coating in one display device is 48%, the variation range of the refractive index of liquid crystal layer in first display device
It is 1.498~1.550；
Second narrow-band light source is the laser light source that launch wavelength is 530nm green light, the method cloth in the second display part
In-Perot cavity with a thickness of 2564nm, the reflectivity of the reflectance coating in the second display part is 42%, second display
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in device；
The third narrow-band light source is the laser light source that launch wavelength is 450nm blue light, the method cloth in the third display device
In-Perot cavity with a thickness of 2177nm, the reflectivity of the reflectance coating in the third display device is 37%, and the third is shown
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in device.
11. a kind of display device, which is characterized in that aobvious including narrow-band light source and on the narrow-band light source emitting light path
Show that device, the display device are display device described in claim 5 or 6.
12. display device according to claim 11, which is characterized in that the narrow-band light source include the first narrow-band light source,
Second narrow-band light source and third narrow-band light source；The pixel unit includes the first dot structure, the second dot structure and third picture
Plain structure；
First dot structure is used to transmit the light that first narrow-band light source issues and is shown, the second pixel knot
Structure is used to transmit the light that second narrow-band light source issues and is shown that the third dot structure is for transmiting the third
The light that narrow-band light source issues is shown.
13. display device according to claim 12, which is characterized in that first narrow-band light source is that launch wavelength is
The laser light source of 632.8nm feux rouges, the Fabry-Perot-type cavity of first dot structure with a thickness of 3062nm, described first
The reflectivity of reflectance coating in dot structure is 48%, and the variation range of the refractive index of liquid crystal layer is in first dot structure
1.498~1.550；
Second narrow-band light source is the laser light source that launch wavelength is 530nm green light, the method cloth in second dot structure
In-Perot cavity with a thickness of 2564nm, the reflectivity of the reflectance coating in second dot structure is 42%, second pixel
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in structure；
The third narrow-band light source is the laser light source that launch wavelength is 450nm blue light, the method cloth in the third dot structure
In-Perot cavity with a thickness of 2177nm, the reflectivity of the reflectance coating in the third dot structure is 37%, the third pixel
The variation range of the refractive index of liquid crystal layer is 1.498~1.550 in structure.
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| WO2021184925A1 (en) * | 2020-03-19 | 2021-09-23 | 深圳光峰科技股份有限公司 | Projection system |
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| CN106019789A (en) * | 2016-07-29 | 2016-10-12 | 上海誉沛光电科技有限公司 | Optical engine of color projection display |
| CN106125478A (en) * | 2016-08-08 | 2016-11-16 | 哈尔滨理工大学 | Not timesharing colorful digital projection arrangement and method |
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| CN109870858A (en) * | 2019-04-24 | 2019-06-11 | 京东方科技集团股份有限公司 | Display panel and 3D printing device |
| CN110568692A (en) * | 2019-08-30 | 2019-12-13 | 华中科技大学 | Display device based on phase-change material and quantum dots |
| CN110568692B (en) * | 2019-08-30 | 2020-05-19 | 华中科技大学 | Display device based on phase-change material and quantum dots |
| WO2021184925A1 (en) * | 2020-03-19 | 2021-09-23 | 深圳光峰科技股份有限公司 | Projection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109828406B (en) | 2021-03-30 |
| JP2020149040A (en) | 2020-09-17 |
| JP6873499B2 (en) | 2021-05-19 |
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