CN107479184A - Optical filter, display device and electronic installation - Google Patents
Optical filter, display device and electronic installation Download PDFInfo
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- CN107479184A CN107479184A CN201710915359.5A CN201710915359A CN107479184A CN 107479184 A CN107479184 A CN 107479184A CN 201710915359 A CN201710915359 A CN 201710915359A CN 107479184 A CN107479184 A CN 107479184A
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- Prior art keywords
- optical filter
- supporting plate
- light
- substrate
- display device
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/001—Optical devices or arrangements for the control of light using movable or deformable optical elements based on interference in an adjustable optical cavity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133521—Interference filters
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a kind of optical filter.The substrate of optical filter printing opacity, the supporting plate of printing opacity and piezoelectric element.Substrate and supporting plate relative spacing are set.Substrate is connected with supporting plate by spring.Substrate includes the first surface relative with supporting plate.Supporting plate includes the second surface relative with substrate.Reflector is provided with first surface and second surface.The plane of incidence opposite with second surface of supporting plate is connected with piezoelectric element.Piezoelectric element is used to drive supporting plate movement to change the gap between substrate and supporting plate.The invention also discloses a kind of display device and electronic installation.Optical filter, display device and the electronic installation of embodiment of the present invention change the gap between two reflectors by piezoelectric element, so that optical filter by the light of multi-wavelength, can be advantageous to the display color of abundant display device and electronic installation.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of optical filter, display device and electronic installation.
Background technology
Liquid crystal display device is applied to various occasions, such as wrist-watch, books, television indicator at present.These display dresses
It is all to combine by the light of three primary colours and realize a series of colors to put, and cause the achievable color of liquid crystal display device scope and
Intensity is restricted.
The content of the invention
The embodiment provides a kind of optical filter, display device and electronic installation.
The optical filter of embodiment of the present invention includes the substrate of printing opacity, the supporting plate and piezoelectric element of printing opacity.The substrate
Set with the supporting plate relative spacing.The substrate is connected with the supporting plate by spring, the substrate include with it is described
The relative first surface of supporting plate, institute's supporting plate include the second surface relative with the substrate, the first surface and described
Reflector, the plane of incidence opposite with the second surface and the piezoelectric element of the supporting plate are provided with second surface
Connection, the piezoelectric element are used to drive the supporting plate movement to change the gap between the substrate and the supporting plate.
The display device of embodiment of the present invention includes light source and above-mentioned optical filter.The optical filter is arranged on the light
In the light extraction light path in source.
The electronic installation of embodiment of the present invention includes housing and above-mentioned display device.The display device is arranged on institute
State on housing.
Optical filter, display device and the electronic installation of embodiment of the present invention by piezoelectric element change two reflectors it
Between gap so that optical filter can be advantageous to abundant display device and electronic installation by the light of multi-wavelength
Show color.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Fig. 2 is the dimensional structure diagram of the optical filter of some embodiments of the present invention.
Fig. 3 is the dimensional structure diagram of the optical filter of some embodiments of the present invention.
Fig. 4 is the spring position arrangement mode schematic diagram of some embodiments of the present invention.
Fig. 5 is the piezoelectric element and spring position arrangement mode schematic diagram of some embodiments of the present invention.
Fig. 6 is the dimensional structure diagram of the optical filter of some embodiments of the present invention.
Fig. 7 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Fig. 8 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Fig. 9 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Figure 10 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Figure 11 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Figure 12 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Figure 13 is the diagrammatic cross-section of the optical filter of some embodiments of the present invention.
Figure 14 is the schematic diagram of the display device of some embodiments of the present invention.
Figure 15 is the schematic diagram of the display device of some embodiments of the present invention.
Figure 16 is the schematic diagram of the electronic installation of some embodiments of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are based on orientation shown in the drawings or position relationship, are for only for ease of
Description is of the invention to be described with simplified, rather than the device or element of instruction or hint meaning must be with specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more feature.
In description of the invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Sign is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and
And purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or setting
Relation.In addition, the invention provides various specific techniques and material examples, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Referring to Fig. 1, the optical filter 100 of embodiment of the present invention includes substrate 10, the supporting plate 20 of printing opacity, the bullet of printing opacity
Spring 30 and piezoelectric element 40.Substrate 10 and supporting plate 20 are connected by spring 30, and relative spacing is set.Substrate 10 include with
The relative first surface 11 of supporting plate 20.Supporting plate 20 includes the second surface 21 relative with substrate 10, in addition to the second table
The opposite plane of incidence 22 in face 21.Reflector 50 is provided with first surface 11 and second surface 21.Reflector 50 is used to reflect
Enter to inject the light for the Fabry-Perot-type cavity that substrate 10 forms with supporting plate 20 via the plane of incidence 22.The plane of incidence of supporting plate 20
22 are connected with piezoelectric element 40, and piezoelectric element 40 is used to drive supporting plate 20 to move to change between substrate 10 and supporting plate 20
Gap.
Specifically, the substrate 10 and supporting plate 20 and two that relative spacing is set are separately positioned on the first of substrate 10
The reflector 50 of the second surface 21 of surface 11 and supporting plate 20 collectively constitutes Fabry-Perot interferometer.Wherein, substrate 10 with
Space between supporting plate 20 is formed as Fabry-Perot-type cavity.Two reflectors are parallel to each other so that Fabry-Perot interferometer
Tuning filter effect it is more preferable.After incident light including multi-wavelength enters Fabry-Perot-type cavity by supporting plate 20, wavelength is full
Very high peak value occurs in the light of sufficient resonance condition in transmission spectrum, correspond to high-transmission rate.Therefore, this kind of light can be in method cloth
In-the interior progress multiple reflections formation interfering beam of Perot cavity, gone out finally by substrate 10 is wholly transmissive, and it is unsatisfactory for resonant bars
The light of part can not pass through substrate 10.Gap of the light between the transmissivity and substrate 10 and supporting plate 20 of Fabry-Perot intracavitary
It is relevant.Under normal circumstances, resonance condition refers to the half of the width (d) in gap for the wavelength (λ) of light, i.e. d=λ/2,
This time has higher transmissivity.Therefore, when piezoelectric element 40 adjusts the size in the gap between substrate 10 and supporting plate 20
When, you can realize the filtering of a variety of light.
Wherein, piezoelectric element 40 based on the inverse piezoelectric effect of piezoelectric to adjust between substrate 10 and supporting plate 20 between
The size of gap.After voltage is applied to the energization of piezoelectric element 40, the piezoelectric in piezoelectric element 40 converts electrical energy into machinery
Can, mechanical deformation occurs for piezoelectric, so as to produce direction towards the pressure of substrate 10 so that the court of supporting plate 20 to supporting plate 20
Moved close to the direction of substrate 10, and then change the gap between supporting plate 20 and substrate 10, now spring 30 is compressed.Its
In, gap length between supporting plate 20 and substrate 10 depends on the size for the voltage being applied in, in other words, when giving piezoelectricity member
Part 40 applies different size of voltage, and piezoelectric element 40 is because the size for the pressure that deformation applies to supporting plate 20 is also different, accordingly
Ground, different size of pressure makes supporting plate 20 also different towards the amount of movement moved close to the direction of substrate 10, thus, it is possible to obtain
Different size of gap.When the voltage on piezoelectric element 40 is removed, the mechanical deformation of piezoelectric disappears, and spring 30 is to branch
Fagging 20 applies a restoring force, and supporting plate 20 is returned to initial position in the presence of restoring force.
Between the optical filter 100 of embodiment of the present invention is utilized between the change substrate 10 of piezoelectric element 40 and supporting plate 20
Gap, so that optical filter 100 can pass through the light of different wave length.It is used for by the optical filter 100 of embodiment of the present invention
During display device 1000 (shown in Figure 14-15), it can avoid using R, G, B three primary colours can only entering in existing display device 1000
The problem of row color of object combines, enrich the display color of display device 1000.
In some embodiments, substrate 10 and supporting plate 20 may each be eyeglass.Eyeglass can be plate glass or stone
English plate.Plate glass and quartz plate are respectively provided with preferably optical property, and translucency is good, and engineering properties and chemical property compared with
For stabilization.Therefore, having more for optical filter 100 can be caused as substrate 10 and supporting plate 20 using plate glass or quartz plate
Excellent light transmittance and more stable structure.
Wherein, the shape of substrate 10 and supporting plate 20 can be circle, ellipse, square, rectangle, regular polygon
Deng.
In some embodiments, reflector 50 can be metallic reflective coating or distribution Bragg reflector
(Distributed Bragg Reflection, DBR).
Wherein, when reflector 50 is metallic reflective coating, the material of metallic reflective coating can be aluminium film, silverskin, golden film, copper
Film, it can also be indium tin oxide (Indium tin oxide, ITO) etc..The conductive film that metal material is formed is to visible ray
Light transmittance it is higher.
Distribution Bragg reflector realizes the high reflection of light based on Bragg reflection principles.Bragg reflection principles refer to
There is periodic pip on the interface of two kinds of different mediums, periodically reflection will be produced when light incidence.Distribution
Bragg mirror is typically by the semiconductor or medium of some different refractivities to two or more being interspersed
Material is formed, and the high reflectance to a certain optical region is obtained with this, wherein, the wave-length coverage of optical region is adjustable.For example,
The wavelength for the light that distribution Bragg reflector containing alumina layer can reflect can almost cover whole visible light wave range.Phase
Compared with for the metallic reflective coating that can absorb part light, the reflectivity of distribution Bragg reflector is higher.
Referring to Fig. 2, in some embodiments, the quantity of piezoelectric element 40 is one, and piezoelectric element 40 is positioned at incidence
The centre position in face 22.Now, to prevent the piezoelectric element 40 for being arranged on centre position from being produced to incident light into the plane of incidence 22
Influenceing, piezoelectric element 40 is made for most preferably using light transmissive material, such as Kynoar (Polyvinylidene Fluoride,
PVDF) etc..In this way, piezoelectric element 40 can produce pressure to change the gap between substrate 10 and supporting plate 20 to supporting plate 20,
And because piezoelectric element 40 is in the centre position of the plane of incidence 22, each point uniform force of the supporting plate 20 around central shaft so that
Gap change latter two reflector 50 remain on it is parallel.
Referring to Fig. 3, the quantity of piezoelectric element 40 is alternatively multiple, multiple piezoelectric elements 40 are in the optical filter 100
Mandrel is uniformly distributed.Wherein, piezoelectric element 40 can be evenly distributed on any of the plane of incidence 22 around the central shaft of optical filter 100
On position, it is preferred that piezoelectric element 40 is evenly distributed on the marginal position of the plane of incidence 22 around the central shaft of optical filter 100.When
When the circular central shaft of piezoelectric element 40 is evenly distributed on the marginal position of the plane of incidence 22, piezoelectric element 40 can use light transmissive material
It is made, reaches the plane of incidence 22 because piezoelectric element 40 will not shut out the light, therefore light-proof material can also be used (for example, pressure
Electroceramics etc.).In this way, piezoelectric element 40 is uniformly distributed around central shaft so that each point stress of the supporting plate 20 around central shaft
Uniformly, latter two reflector 50 of space change remains on parallel.When piezoelectric element 40 is distributed in the plane of incidence 22 around central shaft
The other positions except marginal position on when, piezoelectric element 40 is made for most preferably using light transmissive material.
Referring to Fig. 4, in some embodiments, the quantity of spring 30 is including multiple, and multiple springs 30 are around optical filter
100 central shaft is uniformly distributed.Wherein, multiple springs 30 are evenly distributed on the marginal position of substrate 10.In this way, piezoelectric element 40
Phase supporting plate 20 apply pressure when, multiple forced contractions of spring 30, because spring 30 is uniformly distributed, therefore multiple springs 30 by
Power is roughly equal, so that it is guaranteed that after space change two reflectors 50 remain on it is parallel.
In some embodiments, the quantity of piezoelectric element 40 is one, and the quantity of spring 30 is multiple.Piezoelectric element 40
Positioned at the centre position of the plane of incidence 22, multiple springs 30 are uniformly distributed around central shaft.Such as shown in Fig. 2, a piezoelectric element
40 are located at the center position of the plane of incidence 22, and four springs 30 are evenly distributed on four corner positions of substrate 10 around central shaft
Place.When piezoelectric element 40 applies pressure to supporting plate 20, four springs 30 shrink simultaneously, and uniform stressed.In this way, supporting plate
After 20 movements, the reflector 50 being arranged on the second surface 21 of supporting plate 20 moves, and gap reduces, and is arranged on the second table
Between reflector 50 on face 21 and the reflector 50 being arranged on first surface 11 can keeping parallelism, make the filter of optical filter 100
Light effect is more preferably.
In some embodiments, the quantity of piezoelectric element 40 is multiple that the quantity of spring 30 is multiple.Multiple piezoelectricity members
Part 40 is uniformly distributed around the central shaft of optical filter 100, and multiple springs 30 are uniformly distributed around the central shaft of optical filter 100, more
Individual piezoelectric element 40 is corresponded with spring 30 and set.Such as shown in Fig. 3, four piezoelectric elements 40 are uniformly distributed around central shaft
At four corner positions of supporting plate 20, four springs 30 are evenly distributed on four corner positions of substrate 10 around central shaft
Place, four piezoelectric elements 40 correspond with four springs 30.In this way, when simultaneously each piezoelectric element 40 applies to supporting plate 20
During identical pressure, four springs 30 shrink simultaneously, and uniform stressed.After supporting plate 20 moves, supporting plate 20 is arranged on
Reflector 50 on second surface 21 moves, and gap reduces, and is arranged on the reflector 50 on second surface 21 with being arranged on
Between reflector 50 on first surface 11 can keeping parallelism, make the filter effect of optical filter 100 more preferably.
In some embodiments, the quantity of piezoelectric element 40 is multiple that the quantity of spring 30 is multiple.Multiple piezoelectricity members
Part 40 is around the central shaft non-uniform Distribution of optical filter 100, central shaft non-homogeneous point of multiple springs 30 around optical filter 100
Cloth, and multiple piezoelectric elements 40 and multiple springs 30 are corresponded and set.Such as shown in Fig. 5, five piezoelectric elements 40 are in
The non-homogeneous arrangement of mandrel, corresponding 5 springs 30 are around the non-homogeneous arrangement of central shaft, five piezoelectric elements 40 and five springs 30 1
One correspondence.In this way, although piezoelectric element 40 and spring 30 are not uniformly distributed around central shaft, due to multiple piezoelectric elements 40
The one-to-one relation between multiple springs 30, each piezoelectric element 40 equally can to supporting plate 20 apply uniform pressure so that
Four uniform stresseds of spring 30 shrink.After supporting plate 20 moves, the reflector that is arranged on the second surface 21 of supporting plate 20
50 move, and gap reduces, the reflector 50 being arranged on second surface 21 and the reflector being arranged on first surface 11
Between 50 can keeping parallelism, make the filter effect of optical filter 100 more preferably.
In some embodiments, the quantity of piezoelectric element 40 is multiple that the quantity of spring 30 is multiple, multiple piezoelectricity members
Part 40 is uniformly distributed around the central shaft of optical filter 100, and multiple springs 30 are uniformly distributed around the central shaft of optical filter 100, this
When multiple piezoelectric elements 40 without with multiple springs 30 correspond set.Such as shown in Fig. 6, two piezoelectric elements 40 are in
Mandrel is evenly distributed on the middle position on relative two side of supporting plate 20, and four springs 30 are uniformly distributed around central shaft
At four corner positions of substrate 10.In this way, when two piezoelectric elements 40 are to the application identical pressure of supporting plate 20, four bullets
Spring 30 shrinks simultaneously and uniform force.After supporting plate 20 moves, the reflector that is arranged on the second surface 21 of supporting plate 20
50 move, and gap reduces, the reflector 50 being arranged on second surface 21 and the reflector being arranged on first surface 11
Between 50 can keeping parallelism, make the filter effect of optical filter 100 more preferably.
Referring to Fig. 7, in some embodiments, optical filter 100 also includes Parallel testing component 60, Parallel testing component
Whether 60 is parallel for detecting two reflectors 50.Specifically, Parallel testing component 60 can be arranged on Fabry-Perot-type cavity
It is interior, it can also be arranged on outside Fabry-Perot-type cavity.Parallel testing component 60 can detect two before optical filter 100 is used to filter
Whether individual reflector 50 is parallel, and testing result is sent to piezoelectric element 40.Wherein, testing result can include two reflections
Whether device 50 is parallel, the gap of which position is less than its peripheral location more than gap, the gap of which position of its peripheral location
Gap, the maximum difference in gap etc. of multiple positions.
Piezoelectric element 40 receives the testing result of Parallel testing component 60.If two reflectors 50 are parallel, piezoelectric element
40 do not act, if two reflectors 50 are not parallel, piezoelectric element 40 drives supporting plate 20 to move according to above-mentioned testing result
So that two reflectors 50 are parallel.Such as piezoelectric element 40 changes the pressure being applied in supporting plate 20 so that supporting plate 20 and base
The position maximum in gap of plate 10 be adjacent to each other, in the minimum position in gap away from each other etc..
Referring again to Fig. 7, in some embodiments, Parallel testing component 60 includes at least three not on the same line
Apart from detection unit 61, be used to detect the distance between two reflectors 50 apart from detection unit 61.Specifically, distance detection
Unit 61 detects the distance between at least three groups of points not on the same line of two reflectors 50.If surveyed at least three groups of points
The distance obtained is equal two-by-two, then it represents that two reflectors 50 are parallel；If be not in the distance that at least three groups of points measure it is equal two-by-two,
Then represent that two reflectors 50 are not parallel.
Also referring to Fig. 7 to Fig. 9, in some embodiments, each include being separately positioned on apart from detection unit 61
Pole plate 611 on two reflectors 50, two pole plates 611 are oppositely arranged to form electric capacity.It is used to detect apart from detection unit 61
The size of electric capacity is to detect the distance between two reflectors 50.
Pole plate 611 can be made up of transparent conductive materials such as ITO (tin indium oxide), IZO (indium zinc oxide) not influence
The light path of Fabry-Perot intracavitary.Two relative pole plates 611 can be separately positioned on the relative surface of two reflectors 50
Marginal position (as shown in Figure 7), it is outer (as shown in Figure 8) to be arranged on Fabry-Perot-type cavity, can also be separately positioned on
Between supporting plate 20 and the reflector 50 being placed on the second surface 21 of supporting plate 20, and it is arranged on substrate 10 and is placed in substrate
Between reflector 50 on 10 first surface 11 (as shown in Figure 9).It is appreciated that formed between two relative pole plates 611
Electric capacity, after the distance change of two pole plates 611, the capacitance of electric capacity also correspondingly changes, by the big I for detecting capacitance
Further to obtain the distance between two pole plates 611, that is to say to obtain the distance between two reflectors 50.
Also referring to Figure 10 and Figure 11, in some embodiments, each include transmitter 612 apart from detection unit 61
With receiver 613.Transmitter 612 and receiver 613 are correspondingly arranged.Transmitter 612 is used to launch light or ultrasonic wave, receiver
613 are used to receive light or ultrasonic wave that corresponding transmitter 612 is launched.Light or the ultrasonic wave letter that receiver 613 receives
Electric signal number can be converted into, the power of electric signal can be used for the power for characterizing light or ultrasonic wave, and further characterize two
The size in the gap between reflector 50, specifically, electric signal is more strong then to represent the damage of light or ultrasonic wave in communication process
Lose smaller, that is, the distance between two reflectors 50 are smaller.Alternatively, it is also possible to based on the reflection light of transmitter 612 or super
The time difference of the time point of sound wave and the time point of the reception light of receiver 613 or ultrasonic wave between the two calculates two reflections
The distance between device 50.In addition, can also be based on the light that the light that transmitter 612 is launched receives with receiver 613 therebetween
Phase difference calculate the distance between two reflectors 50.
Specifically, transmitter 612 and receiver 613 can be arranged on outside Fabry-Perot-type cavity, for example, the He of transmitter 612
Receiver 613 is separately positioned on substrate 10 and supporting plate 20 (as shown in Figure 10), and specifically, transmitter 612 is arranged on substrate
When on 10, receiver 613 is arranged in supporting plate 20, and when transmitter 612 is arranged in supporting plate 20, receiver 613 is arranged on
On substrate 10.Transmitter 612 and receiver 613 can be arranged on Fabry-Perot intracavitary, for example, transmitter 612 and receiver
613 are separately positioned on the marginal position for the reflector 50 for being placed in first surface 11 and are placed in the side of the reflector 50 of second surface 21
Edge position (as shown in figure 11), when transmitter 612 is arranged on the marginal position for the reflector 50 for being placed in first surface 11, receiver
613 are arranged on the marginal position for the reflector 50 for being placed in second surface 21, and transmitter 612, which is arranged on, is placed in the anti-of second surface 21
During the marginal position of emitter 50, receiver 613 is arranged on the marginal position for the transmitter 612 for being placed in first surface 11.
In a particular embodiment of the present invention, when transmitter 612 and receiver 613 are arranged at outside Fabry-Perot-type cavity
When, it can avoid having an impact the light path of Fabry-Perot intracavitary.When transmitter 612 and receiver 613 are arranged at method cloth
In-Perot cavity in when, transmitter 612 launch light the angle of divergence it is as far as possible small, so as to avoid to Fabry-Perot intracavitary
Light path has an impact.
Also referring to Figure 12 and Figure 13, in some embodiments, each include transmitter 612 apart from detection unit 61
With receiver 613.Transmitter 612 is corresponding with receiver 613.Transmitter 612 is used to launch light or ultrasonic wave, receiver 613
For the ultrasonic wave for receiving reflected light line or being reflected.The light or ultrasonic signal that receiver 613 receives can turn
Electric signal is turned to, the power of electric signal can be used for the power for characterizing light or ultrasonic wave, and further characterize two reflectors 50
Between gap size, specifically, electric signal is more strong then to represent that the loss in communication process of light or ultrasonic wave is smaller,
It is exactly that the distance between two reflectors 50 are smaller.Alternatively, it is also possible to the time based on the reflection light of transmitter 612 or ultrasonic wave
The time difference of point and the time point of the reception light of receiver 613 or ultrasonic wave between the two is calculated between two reflectors 50
Distance.In addition, can also based on the phase difference of the light that light and the receiver 613 that transmitter 612 is launched receive therebetween come
Calculate the distance between two reflectors 50.
Wherein, transmitter 612 and receiver 613 can be arranged on Fabry-Perot intracavitary, for example, transmitter 612 and connecing
Receive device 613 to be respectively provided with the substrate 10, transmitter 612 and receiver 613 can be also arranged in supporting plate 20 (such as Figure 12 institutes
Show).When transmitter 612 and receiver 613 are respectively provided with the substrate 10, receiver 613 receives what is reflected via supporting plate 20
Light or ultrasonic wave；When transmitter 612 and receiver 613 are arranged in supporting plate 20, receiver 613 is received via substrate
The light or ultrasonic wave of 10 reflections.Transmitter 612 and receiver 613 can also be arranged on outside Fabry-Perot-type cavity, such as are launched
Device 612 and receiver 613 are arranged at the marginal position for the reflector 50 for being placed in first surface 11, or transmitter 612 and connect
Receive the marginal position (as shown in figure 13) that device 613 is arranged at the reflector 50 for being placed in second surface 21.When transmitter 612 and connect
Device 613 is received when being arranged at the marginal position for the transmitter 612 for being placed in first surface 11, receiver 613 is received via being placed in the
The light or ultrasonic wave that the reflector 50 on two surfaces 21 reflects；The second table is placed in when transmitter 612 and receiver 613 are arranged at
During the marginal position of the transmitter 612 in face 21, receiver 613 receives the light or ultrasonic wave reflected via first surface 11.
In a particular embodiment of the present invention, when transmitter 612 and receiver 613 are arranged at outside Fabry-Perot-type cavity
When, it can avoid having an impact the light path of Fabry-Perot intracavitary.When transmitter 612 and receiver 613 are arranged at method cloth
In-Perot cavity in when, transmitter 612 launch light the angle of divergence it is as far as possible small, so as to avoid to Fabry-Perot intracavitary
Light path has an impact.
Figure 14 is referred to, the display device 1000 of embodiment of the present invention includes light source 200 and above-mentioned any one is real
Apply the optical filter 100 described in mode.Optical filter 100 is arranged in the light extraction light path of light source 200.In this way, the light that light source 200 is sent
The light of exportable target wavelength after being filtered via optical filter 100.
Please continue to refer to Figure 14, in some embodiments, light source 200 is backlight module light source 201.Along backlight module light
The light direction in source 201, display device 1000 include light source 200, down polaroid 300, thin film transistor base plate 400, liquid successively
Crystal layer 800, optical filter 100, upper polaroid 500 and cover plate 600.Wherein, display device 1000 only includes an optical filter 100,
The area of optical filter 100 and the area equation or more bigger than the area of upper polaroid 500 of upper polaroid 500.The two of optical filter 100
The light that space change between individual reflector 50 passes through different wave length with timesharing.Specifically, when display device 1000 works,
Gap between two reflectors 50 need to be varied multiple times so that by the light of different wave length, display device 1000 is just in optical filter 100
Object color component can be gone out according to the light combinations of different wave length.For example, display device 1000 need to be entered according to the light of R, G, B three primary colours
Row combination is to obtain object color component, then optical filter 100 is needed between changing three times between two reflectors 50 in the short period of time
Gap then combines the light of these three colors to obtain target so as to getting the light of tri- kinds of colors of R, G, B respectively in three times
Color.Certainly, further to enrich the display color of display device 1000, optical filter 100 can also be anti-by being varied multiple times two
Gap between emitter 50 obtains the light of more colors to be combined to obtain object color component with timesharing.
Incorporated by reference to Figure 15, in some embodiments, light source 200 is backlight module light source 201, along backlight module light source
201 light directions, display device 1000 include light source 200, down polaroid 300, thin film transistor base plate 400, liquid crystal layer successively
800th, optical filter 100, upper polaroid 500 and cover plate 600.Wherein, display device 1000 includes multiple optical filters 100, multiple filters
Mating plate 100 is combined into the filtering structure 700 of whole piece.The gap difference of multiple optical filters 100 with simultaneously pass through different wave length
Light.Specifically, by taking Bayer array as an example, when display device 1000 works, an optical filter 100 is corresponding to contain R, G, G, B
One pixel of four colors, under the same time, the gap by the optical filter 100 of R, G, B different colours is different, in this way, one
Individual pixel can obtain the light of tri- kinds of colors of R, G, B, then the pixel can obtain object color component by the combination to these three light.
Certainly, further to enrich the display color of display device 1000, an optical filter 100 can be also corresponded to comprising more colors
One pixel.It is different by the gap of the optical filters 100 of different colours under the same time, in this way, a pixel can obtain it is a variety of
The light of color, object color component can obtain by the combination of the light to above-mentioned multiple color.
Figure 16 is referred to, the electronic installation 3000 of embodiment of the present invention includes housing 2000 and above-mentioned any one is implemented
Display device 1000 described in mode.Display device 1000 is arranged on housing 2000.Optical filter 100 in display device 1000
The gap between two reflectors 50 can be changed by piezoelectric element 40 by the light of different wave length, can avoid existing aobvious
The problem of can only using R, G, B three primary colours to carry out color of object combination in showing device 1000, enrich the aobvious of display device 1000
Show color.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (13)
- A kind of 1. optical filter, it is characterised in that the supporting plate and piezoelectric element of substrate, printing opacity including printing opacity, the substrate and The supporting plate relative spacing is set, and the substrate is connected with the supporting plate by spring, and the substrate includes and the branch The relative first surface of fagging, institute's supporting plate include the second surface relative with the substrate, the first surface and described Reflector is provided with two surfaces, the plane of incidence opposite with the second surface and the piezoelectric element of the supporting plate connect Connect, the piezoelectric element is used to drive the supporting plate movement to change the gap between the substrate and the supporting plate.
- 2. optical filter according to claim 1, it is characterised in that the reflector includes metallic reflective coating or distribution Bradley Lattice speculum.
- 3. optical filter according to claim 1, it is characterised in that the quantity of the piezoelectric element is one, the piezoelectricity Element is located at the centre position of the plane of incidence；OrThe quantity of the piezoelectric element is multiple, and multiple piezoelectric elements are uniformly distributed around the central shaft of the optical filter.
- 4. optical filter according to claim 1, it is characterised in that the quantity of the spring includes multiple, multiple bullets Circlip is uniformly distributed around the central shaft of the optical filter.
- 5. optical filter according to claim 1, it is characterised in that the quantity of the piezoelectric element is multiple, the spring Quantity include it is multiple, multiple piezoelectric elements are correspondingly arranged with multiple springs.
- 6. optical filter according to claim 1, it is characterised in that the optical filter also includes Parallel testing component, described Whether Parallel testing component is used for two reflectors of detection parallel.
- 7. optical filter according to claim 6, it is characterised in that the Parallel testing component includes at least three not same On one straight line apart from detection unit, it is described to be used to detect the distance between two described reflectors apart from detection unit.
- 8. optical filter according to claim 7, it is characterised in that each described to include being separately positioned on apart from detection unit Pole plate on two reflectors, two pole plates are oppositely arranged to form electric capacity, described to be used to examine apart from detection unit The size of the electric capacity is surveyed to detect the distance between two described reflectors.
- 9. optical filter according to claim 7, it is characterised in that each described to include transmitter apart from detection unit and connect Receive device, the transmitter and the receiver be separately positioned on the substrate and the support member, the transmitter with it is described Receiver is correspondingly arranged, and the transmitter is used to launch light or ultrasonic wave, and the receiver is used to receive the corresponding hair The light or ultrasonic wave of emitter transmitting.
- 10. a kind of display device, it is characterised in that the display device includes：Light source；WithOptical filter described in claim 1 to 9 any one, the optical filter are arranged in the light extraction light path of the light source.
- 11. display device according to claim 10, it is characterised in that the light source is backlight module light source, along light extraction Direction, the display device include successively：The light source, down polaroid, thin film transistor base plate, liquid crystal layer and the optical filtering Piece, the light that the space change of the optical filter passes through different wave length with timesharing.
- 12. display device according to claim 10, it is characterised in that the light source is backlight module light source, along light extraction Direction, the display device include successively：The light source, down polaroid, thin film transistor base plate, liquid crystal layer and multiple filters Mating plate, the gap differences of multiple optical filters is to pass through the light of different wave length simultaneously.
- 13. a kind of electronic installation, it is characterised in that the electronic installation includes：Housing；WithDisplay device described in claim 10 to 12 any one, the display device are set on the housing.
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| CN201710915359.5A CN107479184A (en) | 2017-09-30 | 2017-09-30 | Optical filter, display device and electronic installation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710915359.5A CN107479184A (en) | 2017-09-30 | 2017-09-30 | Optical filter, display device and electronic installation |
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