CN106200094A - A kind of reflective display and preparation method thereof - Google Patents
A kind of reflective display and preparation method thereof Download PDFInfo
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- CN106200094A CN106200094A CN201610539631.XA CN201610539631A CN106200094A CN 106200094 A CN106200094 A CN 106200094A CN 201610539631 A CN201610539631 A CN 201610539631A CN 106200094 A CN106200094 A CN 106200094A
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- polarized light
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- 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
- G02F1/133553—Reflecting elements
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13478—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells based on selective reflection
Abstract
The embodiment of the invention discloses a kind of reflective display and preparation method thereof, relate to Display Technique field, be lost, in order to solve luminous energy during the reflective LCD device of prior art passes through colored filter because of light, the problem that the light transmission rate caused is low.This reflective display, including: rotatory polarization sheet；Liquid crystal layer, described liquid crystal layer is positioned at the lower section of described rotatory polarization sheet, changes between left circularly polarized light and two kinds of polarization states of right-circularly polarized light for controlling the light of described rotatory polarization sheet outgoing；Cholesteric crystal layer, described cholesteric crystal layer is positioned at the lower section of described liquid crystal layer, for reflecting left circularly polarized light and not reflecting right-circularly polarized light, or it is used for reflecting right-circularly polarized light and not reflecting left circularly polarized light, wherein, described cholesteric crystal layer is divided into multiple reflector element, described reflector element to include the pitch difference of the cholesteric liquid crystal in multiple reflection subelement and different reflection subelement.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of reflective display and preparation method thereof.
Background technology
Continuous progressive recently as science and technology, lcd technology the most perfect, liquid crystal display product (example
As, liquid crystal display LCD, English full name is Liquid Crystal Display) gradually spread over the every nook and cranny that we live.
Wherein, it is good that reflective liquid-crystal display has outdoor readable, low in energy consumption and paid close attention to by people.
Fig. 1 shows the core component structural representation in the reflective liquid-crystal display that prior art provides.This reflection
Formula liquid crystal display includes: the polaroid (Polarizer, POL) that sets gradually, quarter-wave plate, color membrane substrates, liquid crystal
Layer, reflecting layer and array base palte.
When forming electric field between color membrane substrates and array base palte, to control the liquid crystal molecule of liquid crystal layer, not change light inclined
Shake state.Ambient light (light that natural light or light source send) sequentially passes through POL down from above and quarter-wave plate becomes
Circularly polarized light, such as left circularly polarized light；Afterwards, it is still left circularly polarized light through liquid crystal layer, directive reflecting layer；Through reflection
The reflection of layer, the polarization state change of this left circularly polarized light, become right-circularly polarized light；This right-circularly polarized light is from bottom to top
Sequentially pass through liquid crystal layer and quarter-wave plate, become the linear polarization that when polarization state and incidence, the light of POL outgoing is perpendicular
Light, therefore, it can not pass through POL, so that reflective liquid-crystal display display dark-state.
When not forming electric field between color membrane substrates and array base palte, the liquid crystal molecule of liquid crystal layer can change polarization of light shape
State.Ambient light sequentially passes through polaroid from the top down, quarter-wave plate becomes circularly polarized light, such as left circularly polarized light；It
After, become line polarized light through liquid crystal layer；And through the reflection in reflecting layer, upwards penetrate with the original polarization state of this line polarized light
Go out；Sequentially passing through liquid crystal layer and quarter-wave plate, it still keeps the line polarized light identical with the light of POL outgoing time incident,
Therefore, it can through POL, so that reflective liquid-crystal display display on state of.
According to the above-mentioned transmission of light in reflective liquid-crystal display, it is known that the reflecting layer of ambient light incident to display
During, need the colored filter on a color membrane substrates (may be simply referred to as color film), and reflecting through reflecting layer
After outgoing during, in addition it is also necessary to through a colored filter.But, it is unnecessary that light can cause through chromatic filter layer
Luminous energy is lost, and the light transmission rate causing reflective liquid-crystal display is low.
Summary of the invention
Embodiments of the invention provide a kind of reflective display and preparation method thereof, in order to solve the anti-of prior art
Penetrate luminous energy during formula liquid crystal indicator passes through colored filter because of light and problem that the light transmission rate that caused low is lost.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
First aspect, embodiments provides a kind of reflective display, including:
Rotatory polarization sheet；
Liquid crystal layer, described liquid crystal layer is positioned at the lower section of described rotatory polarization sheet, for controlling the light of described rotatory polarization sheet outgoing
Line changes between left circularly polarized light and two kinds of polarization states of right-circularly polarized light；
Cholesteric crystal layer, described cholesteric crystal layer is positioned at the lower section of described liquid crystal layer, is used for reflecting Left-hand circular polarization
Light and do not reflect right-circularly polarized light, or be used for reflecting right-circularly polarized light and not reflecting left circularly polarized light, wherein, described
Cholesteric crystal layer is divided into multiple reflector element, described reflector element to include multiple reflection subelement and different reflection subelement
In the pitch of cholesteric liquid crystal different.
Optionally, described rotatory polarization sheet includes: linear polarizer plate and be positioned at four below described linear polarizer plate/
One wave plate, wherein, the optical axis of described quarter-wave plate and described linear polarizer plate through between axle in 45 degree.
Optionally, reflective display also includes: be positioned at the light-absorption layer below described cholesteric crystal layer.
Optionally, the material of described light-absorption layer is black resin.
Optionally, described reflector element includes: red reflex subelement, is used for reflecting HONGGUANG；Green reflection subelement, uses
In reflection green glow；And blueness reflection subelement, it is used for reflecting blue light.
Optionally, in described cholesteric crystal layer, the most adjacent two described reflection subelements are divided by lighttight barrier wall
Separate.
Optionally, reflective display also includes: the first base between described rotatory polarization sheet and described liquid crystal layer
Plate, and it is positioned at the second substrate below described cholesteric liquid crystal.
Optionally, if described reflective display includes light-absorption layer, the most described second substrate is positioned at described light-absorption layer
Lower section.
Optionally, reflective display also includes: between described liquid crystal layer and described cholesteric crystal layer every
Absciss layer.
Second aspect, embodiments provides the manufacture method of a kind of reflective display, including:
Forming cholesteric crystal layer on second substrate, described cholesteric crystal layer is used for reflecting left circularly polarized light and not
Reflection right-circularly polarized light, or be used for reflecting right-circularly polarized light and not reflecting left circularly polarized light, wherein, described cholesteric phase
Liquid crystal layer is divided into multiple reflector element, each described reflector element to include in multiple reflection subelement and different reflection subelement
The pitch of cholesteric liquid crystal different；
Will be formed with the second substrate of described cholesteric crystal layer with first substrate to box, and described in be formed with described cholesteric
Being filled with liquid crystal layer between second substrate and the described first substrate of phase liquid crystal layer, described liquid crystal layer is positioned at described rotatory polarization sheet
Lower section, for control the light of described rotatory polarization sheet outgoing left circularly polarized light and two kinds of polarization states of right-circularly polarized light it
Between change；
Described to box before or after, described manufacture method also includes: arrange rotatory polarization sheet on described first substrate.
Optionally, described in will be formed with the second substrate of described cholesteric crystal layer and first substrate to box before, described
Method also includes: on the second substrate being formed with cholesteric crystal layer, forms the sealing coat covering described cholesteric crystal layer.
Optionally, the described cholesteric crystal layer that formed on second substrate includes: use lighttight material described the
Barrier wall is made, to be separated out multiple receiving chamber on two substrates；The cholesteric liquid crystal with different pitch is filled into not respectively
In same described receiving chamber, to form each described reflection subelement.
Reflective display that the embodiment of the present invention provides and preparation method thereof, owing to cholesteric crystal layer both can rise
To the effect of reflection light, can play again the effect of the light selecting certain specific wavelength, therefore this cholesteric crystal layer is same
Time there is reflecting layer and the effect of colored filter in prior art.Due to the reflective display in the present embodiment, it is not necessary to
As prior art, incident process and outgoing process twice are through colored filter, it is thus possible to reduce colored filter to light
The loss that energy is unnecessary such that it is able to promote the light transmission rate of reflective display.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only some realities of the present invention
Execute example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.
The structural representation of the reflective LCD device that Fig. 1 provides for prior art；
One of structural representation of reflective LCD device that Fig. 2 provides for the embodiment of the present invention；
The two of the structural representation of the reflective LCD device that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 is the top view of the cholesteric crystal layer in Fig. 2 or Fig. 3；
Fig. 5 a, 5b are respectively reflective LCD device display on state of, the work of dark-state that the embodiment of the present invention provides
One of schematic diagram；
Fig. 6 a, 6b are respectively reflective LCD device display on state of, the work of dark-state that the embodiment of the present invention provides
The two of schematic diagram；
Fig. 7 a, 7b are respectively reflective LCD device display on state of, the work of dark-state that the embodiment of the present invention provides
The three of schematic diagram；
Fig. 8 a, 8b are respectively reflective LCD device display on state of, the work of dark-state that the embodiment of the present invention provides
The four of schematic diagram；
The manufacture method flow chart of the reflective LCD device that Fig. 9 provides for the embodiment of the present invention.
Reference:
1-reflective display；11-rotatory polarization sheet, 111-linear polarizer plate, 112-quarter-wave plate；12-liquid crystal
Layer；13-cholesteric crystal layer；14-light-absorption layer；15-first substrate；16-second substrate；17-sealing coat；20-reflector element,
201-reflects subelement, 201_R-red reflex subelement, and 201_G-green reflection subelement, 201_B-blueness reflection is single
Unit；21-barrier wall.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
In describing the invention, it is to be understood that the orientation of the instructions such as term " " center ", " on ", D score or position
Relation is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description rather than refer to
Show or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as limitation of the present invention.
Embodiment one
As in figure 2 it is shown, embodiments provide a kind of reflective display 1, including: rotatory polarization sheet 11, liquid crystal
(Liquid Crystal, referred to as LC) layer 12, and cholesteric liquid crystal (cholesteric liquid crystal, abbreviation
For CLC) layer 13.
Wherein, ambient light can be converted to circularly polarized light by rotatory polarization sheet 11, is converted into left circularly polarized light and the right side here
Rounding polarized light is the most permissible.
Preferably, as it is shown on figure 3, rotatory polarization sheet 11 may include that linear polarizer plate 111 and is positioned at linear polarizer plate
Quarter-wave plate 112 below 111, wherein, the optical axis of quarter-wave plate 112 and linear polarizer plate 111 through axle it
Between in 45 degree.Ambient light can become line polarized light after linear polarizer plate 111, and this line polarized light becomes after quarter-wave plate
Become circularly polarized light.If (suitable through axial right rotation relative to described linear polarizer plate 111 of the optical axis of quarter-wave plate 112
Hour hands rotate) 45 degree, then ambient light can be converted to right-circularly polarized light.If on the contrary, the optical axis of quarter-wave plate 112
Relative to described linear polarizer plate 111 through axial anticlockwise (counterclockwise rotate) 45 degree, then ambient light can be converted to
Left circularly polarized light.
Liquid crystal layer 12 is positioned at the lower section of rotatory polarization sheet 11, for controlling the light of rotatory polarization sheet 11 outgoing at Left-hand circular polarization
Change between light and two kinds of polarization states of right-circularly polarized light.So-called change between two kinds of polarization states means: through circle partially
The light of mating plate 11 outgoing, can be left circularly polarized light, left-handed elliptically polarized light in the state presented after liquid crystal layer 12
And/or right-handed elliptical polarization light and right-circularly polarized light, further, this state can also is that line polarized light.
The polarization state of light can be controlled by controlling the rotation of liquid crystal in liquid crystal layer 12.For liquid crystal layer 12
Control to be referred to prior art.Concrete, reflective display 1 can change the liquid crystal of polarization of light state with any one
Display device, such as, can be FFS (Fringe Field Switching, fringe field switching) type liquid crystal indicator, TN
(Twist Nematic, twisted-nematic) type liquid crystal indicator, IPS (In Plane Switch, in-plane switching) type liquid crystal
Showing device, AD-SDS (Advanced-Super Dimensional Switching, senior super dimension field switch) type liquid crystal display
Device etc..
Cholesteric crystal layer 13 is positioned at the lower section of liquid crystal layer 12.Optionally, cholesteric crystal layer 13 can be used for reflecting left-handed
Circularly polarized light and do not reflect right-circularly polarized light, does not reflect right-circularly polarized light and means to pass through right-circularly polarized light, when
So cholesteric crystal layer 13 can also be by absorbing right-circularly polarized light, or right-circularly polarized light is partially absorbed part thoroughly
Cross so that it is meet the characteristic not reflecting right-circularly polarized light.Or optional, cholesteric crystal layer 13 can be used for reflecting dextrorotation circle
Polarized light and do not reflect left circularly polarized light, does not reflect left circularly polarized light and means to pass through left circularly polarized light, certainly
Cholesteric crystal layer 13 can also by absorb left circularly polarized light, or left circularly polarized light be partially absorbed part pass through,
It is made to meet the characteristic not reflecting left circularly polarized light.Suitable chiral agent can be added by cholesteric crystal layer 13, with
Cholesteric crystal layer 13 is made to meet above-mentioned optical characteristics.Concrete, reflect left circularly polarized light to cholesteric crystal layer 13
And do not reflect right-circularly polarized light, then can be selected for left-handed chiral agent；To cholesteric crystal layer 13 reflect right-circularly polarized light and
Do not reflect left circularly polarized light, then can be selected for right-handed chirality agent.
It should be appreciated by those skilled in the art that when the pitch of cholesteric liquid crystal and the wavelength of light are basically identical, so that it may right
The light of this wavelength has strong reflection, so that cholesteric liquid crystal is provided with the spy to light with selective reflecting
Property.Based on this principle, in order to allow cholesteric crystal layer 13 possess the effect of colored filter (or claiming color film).With reference to Fig. 4, this
Cholesteric crystal layer 13 in embodiment can be divided into multiple reflector element 20, and reflector element 20 includes multiple reflection subelement 201
And the pitch of the cholesteric liquid crystal in difference reflection subelement 201 is different.Here, each reflector element 20 is cholesteric liquid crystal
Minimum repetitive in layer 13, generally corresponds to a pixel of reflective display, and each reflection subelement 201 is corresponding
A sub-pix in reflective display.Those skilled in the art can be according to the light needing reflection in a reflector element 20
Color, determine the cholesteric liquid crystal which needs to select in this reflector element 20 plant pitch.Example, a picture of display device
Element needs to comprise trichromatic sub-pix, then can comprise three kinds of reflection subelements 201 in above-mentioned reflector element 20, these are three years old
Plant reflection subelement 201 to be respectively used to reflect trichromatic light.Preferably, reflector element 20 includes: red reflex subelement
201_R, is used for reflecting HONGGUANG；Green reflection subelement 201_G, is used for reflecting green glow；And blueness reflection subelement 201_B,
For reflecting blue light.It is said that in general, different types of reflection subelement only has one in a reflector element 20, naturally it is also possible to
It is arranged as required to multiple, at this without limitation.In addition, it is necessary to explanation is that above-mentioned three primary colors can also be cyan, magenta, Huang
Color, above-mentioned reflector element 20 can also arrange the reflection subelement of these three color.
In order to reduce the interference between the light that neighboring reflection subelement 201 reflects, preferred reference in the present embodiment
Fig. 4, in cholesteric crystal layer 13, the most adjacent two reflection subelements 201 are separated by lighttight barrier wall 21.Example,
Barrier wall 21 can illustrate in network, the barrier wall 21 of this network has been separated out multiple receiving chamber, accommodate chamber
The cholesteric liquid crystal of middle filling one constant pitch, is the formation of the reflection subelement 201 of respective color.The material of this barrier wall 21 can
To be macromolecular material, such as, it can be black resin.
It addition, the cholesteric crystal layer 13 in the present embodiment is preferably the film of the cured formation of cholesteric liquid crystal.Now, gallbladder
Cholesteric liquid crystal in steroid phase liquid crystal layer 13 is the most flowable, also implies that the state of cholesteric liquid crystal no longer changes.So i.e.
Just cholesteric crystal layer 13 is in electric field, and cholesteric liquid crystal will not be affected by electric field.
The reflective display that the embodiment of the present invention provides, both can play reflection light due to cholesteric crystal layer
Effect, can play again the effect of the light selecting certain specific wavelength, and therefore this cholesteric crystal layer has existing skill simultaneously
Reflecting layer and the effect of colored filter in art.Due to the reflective display in the present embodiment, it is not necessary to as prior art one
Sample incidence process and outgoing process twice are through colored filter, it is thus possible to reduce colored filter to the unnecessary damage of luminous energy
Consumption such that it is able to promote the light transmission rate of reflective display.
It should be appreciated by those skilled in the art that usual liquid crystal indicator is intended to what box-like was become by two substrates, therefore,
The present embodiment also includes: the first substrate 15 being oppositely arranged and second substrate 16.Wherein, first substrate 15 is positioned at liquid crystal layer 12
Top, second substrate 16 is positioned at below cholesteric crystal layer 13.So, cholesteric crystal layer 13 is positioned at first substrate 15 and
In the box that two substrates 16 are constituted, ambient light is during inciding cholesteric crystal layer 13 and launching, it is not necessary to through the second base
The Rotating fields of plate 16 such that it is able to there is higher transmitance.Further preferred, first substrate 15 is positioned at described rotatory polarization
Between sheet 11 and liquid crystal layer 12, second substrate 16 is positioned at below cholesteric crystal layer 13.So so that rotatory polarization sheet 11 can
To be attached on the upper surface of first substrate 15, to facilitate setting.The layer arranged on above-mentioned first substrate 15 and second substrate 16
Depending on structure can be by the type of drive needed for liquid crystal layer 12.Example, if reflective LCD device is TN type, then the second base
Plate 16 can be the array base palte of TN type liquid crystal indicator, and this second substrate 16 includes the pixel being arranged on inside underlay substrate
Electrode, pixel electrode can use tin indium oxide ITO material, certain second substrate 16 is additionally provided with and provides electricity into pixel electrode
The circuit structure of signal, this circuit structure can comprise grid line, data wire and switching transistor etc..First substrate 15 is permissible
Being the substrate after the color film of color membrane substrates removal of TN type liquid crystal indicator, this first substrate 15 can include being arranged on substrate base
Transparency electrode on plate, transparency electrode can use ITO material, this transparency electrode as drive liquid crystal layer 12 public electrode,
Further can also include, at first substrate 15, the chock insulator matter (PS) that is arranged on underlay substrate, to ensure first substrate
Gap between 15 and second substrate 16.Wherein, the position of first substrate 15 and second substrate 16 can be exchanged.And due to array
There is multiple Rotating fields on substrate, in order to ensure light transmission rate, be preferably the former.
Example again, if reflective LCD device is AD-SDS type, then second substrate 16 can be AD-SDS type liquid
The array base palte of crystal device, now second substrate 16 includes being arranged on pixel electrode and public electrode on underlay substrate, with
And give the circuit that pixel electrode and public electrode power；First substrate 15 can be the color film base of AD-SDS type liquid crystal indicator
The substrate after color film removed by plate, and the inner side on first substrate 15 can be provided with PS.For other kinds of liquid crystal indicator
Can also be not added with at this repeating with reference to above-mentioned implementation method.
Optionally, in order to further prevent a part of incident ray from cholesteric crystal layer 13 outgoing, and cause reflection
There is the problem of light leak in formula display device, and with reference to shown in Fig. 3, above-mentioned reflective display 1 can also include: is positioned at cholesteric
Light-absorption layer 14 below phase liquid crystal layer 13.Optionally, the material of light-absorption layer is black resin, it is of course also possible to select as required
Use other materials light absorbent, such as, can be the offside that is arranged on the display surface of reflective display such as black backboard, tool
Body can be the lower section of second substrate 16 in figure 3.
Owing to the first substrate 15 in the present embodiment is without comprising colored filter, and colored filter bag in prior art
Need through too much exposing, develop, etch containing R, G, B filter unit, the formation of the technique such as after bake, technique is relative complex.The present embodiment
In can eliminate these steps.It addition, black matrix can be retained on first substrate 15, black square preferably can also be not provided with
Battle array, to save technological process further.Further, if not setting black matrix and colored filter on first substrate 15, then
Also it is no need for arranging flatness layer/protective layer (OC, over coat), to save technological process further, it is also possible to reduce display dress
The thickness put.
Optionally, if reflective display 1 includes light-absorption layer 14, then second substrate 16 is positioned at the lower section of light-absorption layer 14.
That is, light-absorption layer 14 is positioned at the inner side of second substrate 16.Preferably, light-absorption layer 14 is carried by second substrate 16, is i.e. produced on
On two substrates 16, such light-absorption layer 14 closer to cholesteric crystal layer 13, thus can strengthen extinction effect.Preferably, extinction
Layer 14 contacts with cholesteric crystal layer 13, to prevent display device light leak.
In the present embodiment, the cholesteric crystal layer that cholesteric crystal layer 13 is the most cured, so can avoid gallbladder
In steroid phase liquid crystal layer 13, liquid crystal pitch (temperature, electric field etc.) affected by environment changes.Now, cholesteric crystal layer 13 is solid
Change, then liquid crystal layer 12 can also directly contact with cholesteric crystal layer 13, but in order to by liquid crystal layer 12 and cholesteric phase liquid
Crystal layer 13 is kept apart, and prevents both interpenetrate, and in the present embodiment, reflective display 1 preferably also includes: be positioned at liquid
Sealing coat 17 between crystal layer 12 and cholesteric crystal layer 13.Can be by liquid crystal layer 12 and cholesteric crystal layer 13 in the present embodiment
Between any layer structure of setting be referred to as sealing coat 17.Further, this sealing coat 17 can also is that cholesteric crystal layer 13
Encapsulated layer, encapsulated layer is for being encapsulated in second substrate 16 by cholesteric crystal layer 13.
The material of above-mentioned sealing coat 17 can be Si3N4(silicon nitride), SiO2(silicon dioxide), SiNO (silicon oxynitride), PI
(polyimides), or glass etc., this sealing coat 17 is referred to as the 3rd substrate, if this sealing coat 17 plays the work of encapsulation
With, then it is also referred to as base plate for packaging.Certainly this sealing coat 17 can also is that organic material, uses the film-forming process such as coating or deposition
Make sealing coat 17, to cover cholesteric crystal layer 13, the most at least cover cholesteric crystal layer 13 upper surface, preferably can be coated with
Cholesteric crystal layer 13, i.e. covers cholesteric crystal layer 13 upper surface and side.Owing to sealing coat 17 is positioned at first substrate 15 He
In the box of second substrate 16, in order to avoid sealing coat 17 can produce harmful effect to the electric field driving liquid crystal layer 12, generally encapsulate
The thickness of substrate is less than first substrate 15 thickness and the thickness of second substrate 16.
Below, the operation principle of above-mentioned offer reflective LCD device is described in detail.
Ambient light can be converted into left circularly polarized light by scheme 1, rotatory polarization sheet 11, and cholesteric crystal layer 13 can realize reflection
Left circularly polarized light, through right-circularly polarized light.
Fig. 5 a shows that this reflective LCD device realizes the process of on state of.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes left circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
It is applied to the nematic crystal of TN type liquid crystal indicator, then can drive liquid crystal layer 12 so that the liquid crystal in liquid crystal layer 12 is vertical
Arrangement, liquid crystal layer 12 now does not change the polarization state of light, so light is constant, still through liquid crystal layer 12 rear polarizer state
For left circularly polarized light.After the reflection through cholesteric crystal layer 13, be still left circularly polarized light, through liquid crystal layer 12, with
And quarter-wave plate 112 becomes the line polarized light consistent with polarization direction time incident, thus can go out from linear polarizer plate 111
Penetrate.
Fig. 5 b shows that this reflective LCD device realizes the process of dark-state.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes left circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
Being applied to the nematic crystal of TN type liquid crystal indicator, time the most not powered, liquid crystal layer 12 is equivalent to 1/2nd wave plates, now
Left circularly polarized light can be converted to right-circularly polarized light by liquid crystal layer 12, and right-circularly polarized light can be saturating from cholesteric crystal layer 13
Cross, further can also be positioned at the light-absorption layer below cholesteric crystal layer 13 and absorb, thus realize dark-state.Wherein, at TN
In type liquid crystal indicator, to make liquid crystal layer 12 be equivalent to 1/2nd wave plates when not powered, the most optionally, it is arranged on
The differently-oriented directivity of the first alignment films (not shown) of first substrate 15 inner surface can with linear polarizer plate 111 through axle
Direction is parallel, and be arranged on second substrate 16 inner surface the second alignment films (not shown) differently-oriented directivity can with linearly
Polaroid 111 vertical through direction of principal axis；Or optional, it is arranged on the first alignment films of first substrate 15 inner surface (in figure
Not shown) differently-oriented directivity can vertical through direction of principal axis with linear polarizer plate 111, and be arranged on second substrate 16 inner surface
The differently-oriented directivity of the second alignment films (not shown) can parallel through direction of principal axis with linear polarizer plate 111.
When the electric field applied to liquid crystal layer 12 is less than the electric field intensity shown in Fig. 5 a, liquid crystal layer 12 can be by inclined for left-handed circle
The light that shakes is converted to left-handed elliptically polarized light, owing to cholesteric crystal layer 13 has the characteristic of reflection left circularly polarized light, thus right
Can only be partially reflective in left-handed elliptically polarized light, so that reflective LCD device is between above two state, can
Realize the display of different GTG.Further, if left circularly polarized light can be converted to line polarized light or the right side by liquid crystal layer 12
Rotation elliptically polarized light, then reflective LCD device can be now dark-state, is certainly also likely to be partially reflective fractional transmission.
Ambient light can be converted into left circularly polarized light by scheme 2, rotatory polarization sheet 11, and cholesteric crystal layer 13 can realize reflection
Right-circularly polarized light, through left circularly polarized light.
Fig. 6 a shows that this reflective LCD device realizes the process of on state of.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes left circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
Being applied to the nematic crystal of TN type liquid crystal indicator, time the most not powered, liquid crystal layer 12 is equivalent to 1/2nd wave plates, now
Left circularly polarized light can be converted to right-circularly polarized light by liquid crystal layer 12, and right-circularly polarized light can be anti-by cholesteric crystal layer 13
Penetrate；The right-circularly polarized light reflected is converted into again left circularly polarized light through liquid crystal layer 12, afterwards, through quarter-wave plate
112 become the line polarized light consistent with polarization direction time incident, thus can be from linear polarizer plate 111 outgoing.
Fig. 6 b shows that this reflective LCD device realizes the process of dark-state.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes left circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
It is applied to the nematic crystal of TN type liquid crystal indicator, then powers up so that liquid crystal layer 12 is in electric field, now liquid crystal layer 12
In liquid crystal be vertically arranged, liquid crystal layer 12 now does not change the polarization state of light, so light retrodeviates through liquid crystal layer 12
State of shaking is constant, is still left circularly polarized light, and left circularly polarized light can pass through from cholesteric crystal layer 13, the most all right
It is positioned at the light-absorption layer below cholesteric crystal layer 13 to absorb, thus is realized dark-state.
When the electric field applied to liquid crystal layer 12 is less than the electric field intensity shown in Fig. 6 b, liquid crystal layer 12 can be by inclined for left-handed circle
The light that shakes is converted to right-handed elliptical polarization light, owing to cholesteric crystal layer 13 has the characteristic of reflection right-circularly polarized light, thus right
Can only be partially reflective in right-handed elliptical polarization light, so that reflective LCD device is between above two state, can
Realize the display of different GTG.Further, if left circularly polarized light can be converted to line polarized light or a left side by liquid crystal layer 12
Rotation elliptically polarized light, then reflective LCD device can be now dark-state, is certainly also likely to be partially reflective fractional transmission.
Ambient light can be converted into right-circularly polarized light by scheme 3, rotatory polarization sheet 11, and cholesteric crystal layer 13 can realize reflection
Left circularly polarized light, through right-circularly polarized light.
Fig. 7 a shows that this reflective LCD device realizes the process of on state of.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes right-circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
Being applied to the nematic crystal of TN type liquid crystal indicator, time the most not powered, liquid crystal layer 12 is equivalent to 1/2nd wave plates, now
Right-circularly polarized light can be converted to left circularly polarized light by liquid crystal layer 12, and right-circularly polarized light can be anti-by cholesteric crystal layer 13
Penetrate；The left circularly polarized light reflected is converted into again right-circularly polarized light through liquid crystal layer 12, afterwards, through quarter-wave plate
112 become the line polarized light consistent with polarization direction time incident, thus can be from linear polarizer plate 111 outgoing.
Fig. 7 b shows that this reflective LCD device realizes the process of dark-state.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes right-circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
It is applied to the nematic crystal of TN type liquid crystal indicator, then powers up so that liquid crystal layer 12 is in electric field, now liquid crystal layer 12
In liquid crystal be vertically arranged, liquid crystal layer 12 now does not change the polarization state of light, so light retrodeviates through liquid crystal layer 12
State of shaking is constant, is still right-circularly polarized light, and right-circularly polarized light can pass through from cholesteric crystal layer 13, the most all right
It is positioned at the light-absorption layer below cholesteric crystal layer 13 to absorb, thus is realized dark-state.
When the electric field applied to liquid crystal layer 12 is less than the electric field intensity shown in Fig. 7 b, liquid crystal layer 12 can be by inclined for left-handed circle
The light that shakes is converted to left-handed elliptically polarized light, owing to cholesteric crystal layer 13 has the characteristic of reflection left circularly polarized light, thus right
Can only be partially reflective in left-handed elliptically polarized light, so that reflective LCD device is between above two state, can
Realize the display of different GTG.Further, if left circularly polarized light can be converted to line polarized light or the right side by liquid crystal layer 12
Rotation elliptically polarized light, then reflective LCD device can be now dark-state, is certainly also likely to be partially reflective fractional transmission.
Ambient light can be converted into right-circularly polarized light by scheme 4, rotatory polarization sheet 11, and cholesteric crystal layer 13 can realize reflection
Right-circularly polarized light, through left circularly polarized light.
Fig. 8 a shows that this reflective LCD device realizes the process of on state of.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes right-circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
It is applied to the nematic crystal of TN type liquid crystal indicator, then can drive liquid crystal layer 12 so that the liquid crystal in liquid crystal layer 12 is vertical
Arrangement, liquid crystal layer 12 now does not change the polarization state of light, so light is constant, still through liquid crystal layer 12 rear polarizer state
For right-circularly polarized light.After the reflection through cholesteric crystal layer 13, be still right-circularly polarized light, through liquid crystal layer 12, with
And quarter-wave plate 112 becomes the line polarized light consistent with polarization direction time incident, thus can go out from linear polarizer plate 111
Penetrate.
Fig. 8 b shows that this reflective LCD device realizes the process of dark-state.Ambient light is from the top down through linear inclined
Mating plate 111 becomes line polarized light, and line polarized light becomes right-circularly polarized light through quarter-wave plate 112.If liquid crystal layer 12 is
Being applied to the nematic crystal of TN type liquid crystal indicator, time the most not powered, liquid crystal layer 12 is equivalent to 1/2nd wave plates, now
Right-circularly polarized light can be converted to left circularly polarized light by liquid crystal layer 12, and left circularly polarized light can be saturating from cholesteric crystal layer 13
Cross, further can also be positioned at the light-absorption layer below cholesteric crystal layer 13 and absorb, thus realize dark-state.
When the electric field applied to liquid crystal layer 12 is less than the electric field intensity shown in Fig. 8 a, liquid crystal layer 12 can be by inclined for left-handed circle
The light that shakes is converted to right-handed elliptical polarization light, owing to cholesteric crystal layer 13 has the characteristic of reflection right-circularly polarized light, thus right
Can only be partially reflective in right-handed elliptical polarization light, so that reflective LCD device is between above two state, can
Realize the display of different GTG.Further, if left circularly polarized light can be converted to line polarized light or a left side by liquid crystal layer 12
Rotation elliptically polarized light, then reflective LCD device can be now dark-state, is certainly also likely to be partially reflective fractional transmission.
The work of above-mentioned on state of and dark-state by reflective LCD device for detailing four kinds of schemes as a example by TN type is former
Reason, during it is true that be other types for reflective LCD device, equally has above-mentioned four kinds of schemes, at this no longer
Repeat.
No matter the reflective display that the present embodiment provides can be display motion (such as, video) or fixing (example
Such as, rest image) no matter and word or any device of the image of picture.More particularly, it is contemplated that described embodiment can
It is implemented in associating in multiple electronic installation or with multiple electronic installation, the such as (but not limited to) mobile electricity of described multiple electronic installation
Words, wireless device, personal digital assistant (PDA), hand-held or portable computer, gps receiver/omniselector, camera, MP3
Player, video camera, game console, wrist-watch, clock, computer, TV monitor, flat faced display, computer monitor,
Automotive displays (such as, odometer display etc.), navigator, Cockpit Control Unit and/or display, the display of camera view
(such as, the display of rear view camera in vehicle), electronic photographs, electronic bill-board or direction board, projector, building structure, bag
Dress and aesthetic structures (such as, for the display of image of a jewelry) etc..Can also is that reflecting type liquid crystal display panel etc.
Display unit.
Embodiment two,
The manufacture method of a kind of reflective display is embodiments provided with reference to Fig. 9, including:
S101, on second substrate formed cholesteric crystal layer.
Wherein, described cholesteric crystal layer is used for reflecting left circularly polarized light and not reflecting right-circularly polarized light, or uses
In reflecting right-circularly polarized light and not reflecting left circularly polarized light, wherein, described cholesteric crystal layer is divided into multiple reflector element,
Each described reflector element includes that the pitch of the cholesteric liquid crystal in multiple reflection subelement and different reflection subelement is different.
Preferably, this step may include that
First, use lighttight material to make barrier wall on second substrate, to be separated out multiple receiving chamber.Wherein,
Lighttight material can be macromolecular material, such as, can be black resin.Such as: first can make one on second substrate
Black resin layer, then this black resin layer composition is formed barrier wall.Concrete patterning processes can include coating photoresist, covering
The steps such as film exposes, develops, etching, wherein the process of mask exposure can be selected and color membrane substrates in common liquid crystals display device
Identical or similar mask plate, has formed the barrier wall with network.
Afterwards, the cholesteric liquid crystal with different pitch is filled in different receiving chambeies respectively, anti-to form each
Penetrate subelement, thus define cholesteric crystal layer.Such as: silk-screen printing technique can be used, by the cholesteric phase of different pitch
Liquid crystal printing is in different receiving chambeies.
Example, if second substrate is array base palte, then can be to complete grid line, data wire, switch element (such as
TFT), pixel electrode etc., after driving the Rotating fields of liquid crystal layer 12, makes cholesteric crystal layer according to this step above-mentioned.This
Sample can avoid the Rotating fields driving liquid crystal layer 12 impact on light penetration.
S102 (optionally), on the second substrate being formed with cholesteric crystal layer, formed cover described cholesteric liquid crystal
The sealing coat of layer.
Preferably, this sealing coat can be also used for encapsulating cholesteric crystal layer, and now this step can be: uses sealing coat
Described cholesteric crystal layer is encapsulated on described second substrate, with the position of fixing cholesteric crystal layer, will cholesteric phase liquid
Crystal layer is fixed between sealing coat and second substrate.
Concrete can be by sealing coat (can be substrate or in type thin film etc., wherein substrate can be rigidity,
Can also be flexible) covering in cholesteric crystal layer, can make cholesteric liquid crystal not by curing process after this
Flowable.It is of course also possible to the most first cholesteric crystal layer solidified, then use film forming work in step s 102
Skill forms the sealing coat of cladding cholesteric crystal layer or covers the sealing coat of cholesteric crystal layer upper surface.
Wherein step S101 and step S102 part sequencing, can first carry out step S101, carry out step S102 again,
Can also be in turn, it is also possible to carry out the most simultaneously.
S103, the second substrate that will be formed with described cholesteric crystal layer and first substrate are to box, and are formed with described gallbladder
It is filled with liquid crystal layer between second substrate and the described first substrate of steroid phase liquid crystal layer.
Wherein, liquid crystal layer is positioned at the lower section of described rotatory polarization sheet, for controlling the light of described rotatory polarization sheet outgoing on a left side
Change between rounding polarized light and two kinds of polarization states of right-circularly polarized light.
This step is referred to prior art, and concrete can be before to box, drip liquid on a substrate wherein
Crystalline substance, and on another substrate, coat sealed plastic box, so that two substrates is to forming the liquid crystal panel being filled with liquid crystal layer after box；Also
Can be to coat sealed plastic box wherein on a substrate, afterwards box-like be become by two substrates cavity, and in cavity, injects liquid crystal.
If it should be noted that without step S102, then it is generally required to cholesteric crystal layer is through solid before this step
After change.
S104, rotatory polarization sheet is set on the first substrate.
Step S104 can be before S103, it is also possible to (as example in figure) after S103.Example, it is also possible to
Before step S101, the outer surface of first substrate arranges rotatory polarization sheet, wherein the outer surface of first substrate and rotatory polarization sheet
Between can also be arranged as required to other Rotating fields.Certainly it may also is that first substrate includes underlay substrate, this step also may be used
To be to arrange rotatory polarization sheet on the inner surface of underlay substrate, now also can root between inner surface and the rotatory polarization sheet of underlay substrate
Arrange other Rotating fields according to needs, such as, as the ITO layer of public electrode, certain ITO layer may also be arranged on the interior of rotatory polarization sheet
Side.
The manufacture method of the reflective display that the embodiment of the present invention provides, by being produced on reflective display
Position, reflecting layer arranges cholesteric crystal layer, and this cholesteric crystal layer both can play the effect of reflection light, the most permissible
Play the effect of light selecting certain specific wavelength, therefore this cholesteric crystal layer have in prior art simultaneously reflecting layer and
The effect of colored filter, it is possible to reduce colored filter to the unnecessary loss of luminous energy such that it is able to promote reflective display
The light transmission rate of device.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (12)
1. a reflective display, it is characterised in that including:
Rotatory polarization sheet；
Liquid crystal layer, described liquid crystal layer is positioned at the lower section of described rotatory polarization sheet, exists for controlling the light of described rotatory polarization sheet outgoing
Change between left circularly polarized light and two kinds of polarization states of right-circularly polarized light；
Cholesteric crystal layer, described cholesteric crystal layer is positioned at the lower section of described liquid crystal layer, be used for reflecting left circularly polarized light and
Do not reflect right-circularly polarized light, or be used for reflecting right-circularly polarized light and not reflecting left circularly polarized light, wherein, described cholesteric
Phase liquid crystal layer is divided into multiple reflector element, described reflector element to include in multiple reflection subelement and different reflection subelement
The pitch of cholesteric liquid crystal is different.
Device the most according to claim 1, it is characterised in that described rotatory polarization sheet includes: linear polarizer plate and being positioned at
Quarter-wave plate below described linear polarizer plate, wherein, the optical axis of described quarter-wave plate and described linear polarizer plate
Through between axle in 45 degree.
Device the most according to claim 1, it is characterised in that also include: be positioned at the suction below described cholesteric crystal layer
Photosphere.
Device the most according to claim 3, it is characterised in that the material of described light-absorption layer is black resin.
Device the most according to claim 1, it is characterised in that described reflector element includes:
Red reflex subelement, is used for reflecting HONGGUANG；
Green reflection subelement, is used for reflecting green glow；
And blueness reflection subelement, it is used for reflecting blue light.
Device the most according to claim 1, it is characterised in that in described cholesteric crystal layer, the most adjacent two described instead
Penetrate subelement to be separated by lighttight barrier wall.
7. according to the device described in any one of claim 1-6, it is characterised in that also include: be positioned at described rotatory polarization sheet and institute
State the first substrate between liquid crystal layer, and be positioned at the second substrate below described cholesteric liquid crystal.
Device the most according to claim 7, it is characterised in that if described reflective display includes light-absorption layer, then institute
State second substrate and be positioned at the lower section of described light-absorption layer.
Device the most according to claim 7, it is characterised in that also include: be positioned at described liquid crystal layer and described cholesteric phase liquid
Sealing coat between crystal layer.
10. the manufacture method of a reflective display, it is characterised in that including:
Forming cholesteric crystal layer on second substrate, described cholesteric crystal layer is used for reflecting left circularly polarized light and not reflecting
Right-circularly polarized light, or be used for reflecting right-circularly polarized light and not reflecting left circularly polarized light, wherein, described cholesteric liquid crystal
Layer is divided into multiple reflector element, each described reflector element to include the gallbladder in multiple reflection subelement and different reflection subelement
The pitch of steroid phase liquid crystal is different；
Will be formed with the second substrate of described cholesteric crystal layer with first substrate to box, and described in be formed with described cholesteric phase liquid
Being filled with liquid crystal layer between second substrate and the described first substrate of crystal layer, described liquid crystal layer is positioned under described rotatory polarization sheet
Side, for controlling the light of described rotatory polarization sheet outgoing between left circularly polarized light and two kinds of polarization states of right-circularly polarized light
Change；
Described to box before or after, described manufacture method also includes: arrange rotatory polarization sheet on described first substrate.
11. manufacture methods according to claim 10, it is characterised in that described in will be formed with described cholesteric crystal layer
Before second substrate and first substrate are to box, described method also includes:
On the second substrate being formed with cholesteric crystal layer, form the sealing coat covering described cholesteric crystal layer.
12. according to the manufacture method described in claim 10 or 11, it is characterised in that described formation cholesteric phase on second substrate
Liquid crystal layer includes:
Lighttight material is used to make barrier wall on described second substrate, to be separated out multiple receiving chamber；
The cholesteric liquid crystal with different pitch is filled into respectively in different described receiving chambeies, to form each described reflection
Subelement.
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