CN109884820A - Transparent display panel and preparation method thereof - Google Patents
Transparent display panel and preparation method thereof Download PDFInfo
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- CN109884820A CN109884820A CN201910307636.3A CN201910307636A CN109884820A CN 109884820 A CN109884820 A CN 109884820A CN 201910307636 A CN201910307636 A CN 201910307636A CN 109884820 A CN109884820 A CN 109884820A
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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
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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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- 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
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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Dispersion Chemistry (AREA)
- Holo Graphy (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
Embodiment of the disclosure provides a kind of transparent display panel and preparation method thereof.The transparent display panel includes: first substrate and the second substrate, the first substrate include first surface towards the second substrate and back to the second surface of the second substrate and between the first surface and second surface, at least one light incident surface for receiving incident beam；Liquid crystal module between the first substrate and the second substrate, the Liquid crystal module have the multiple pixel units that can switch between light-scattering state and light transmission state；And the transparent holographic film between first substrate and Liquid crystal module.
Description
Technical field
This disclosure relates to field of display technology more particularly to a kind of transparent display panel and preparation method thereof.
Background technique
Transparence display is a kind of display technology with wide application prospect.It can both show image on a display screen,
The scenery that display screen rear is seen at family through display screen can be used again.For example, trade company generally requires both glass cases in shop
Some information are shown on window, it is also desirable to which the people outside the showcase of shop can observe show window through shop showcase
The commodity shown below.In the prior art, it proposes that image projection is located to the transparent back on the inside of showcase by projector
It throws on curtain and realizes transparence display.
Summary of the invention
Embodiment of the disclosure provides a kind of transparent display panel, comprising: first substrate and the second substrate, described first
Substrate include first surface towards the second substrate and back to the second substrate second surface and be located at the first surface and
At least one light incident surface between second surface, for receiving incident beam；Positioned at the first substrate and the second substrate
Between Liquid crystal module, the Liquid crystal module has the multiple pixels that can switch between light-scattering state and light transmission state
Unit；And the transparent holographic film between first substrate and Liquid crystal module.
In some embodiments, the holographic film record has the interference figure formed by object beam and reference beam, described
At least part of incident beam is irradiated to direction and the reference beam on the first surface by the light incident surface
The direction being irradiated on the holographic film when forming the interference figure is consistent.
In some embodiments, the angle between the reference beam and object beam is greater than 30 degree.
In some embodiments, the angle between the reference beam and object beam is greater than 90 degree.
In some embodiments, the refractive index of the holographic film is greater than or equal to the refractive index of the first substrate.
In some embodiments, the refractive index of the part contacted in the Liquid crystal module with the holographic film is greater than or equal to
The refractive index of the holographic film.
In some embodiments, the multiple pixel unit is arranged in a matrix, and the holographic film includes being arranged at distances from one another
Multiple bar shaped portions, orthographic projection of each bar shaped portion on Liquid crystal module be Chong Die with the column pixel unit in the matrix.
In some embodiments, at least one described light incident surface only includes positioned at the first of the side of the first substrate
Light incident surface, the bar shaped portion closer from first light incident surface is on the first surface of first substrate in the multiple bar shaped portion
Orthographic projection area it is smaller.
In some embodiments, at least one described light incident surface includes be located at first substrate reciprocal two
The first light incident surface and the second light incident surface of side, in the multiple bar shaped portion close to the bar shaped portion of first light incident surface and
It is less than and described the close to the area of orthographic projection of the bar shaped portion on the first surface of first substrate of second light incident surface
The area of the orthographic projection of one light incident surface and the separate bar shaped portion of the second light incident surface on the first surface of first substrate.
In some embodiments, the Liquid crystal module includes polymer dispersed liquid crystal layer.
In some embodiments, the Liquid crystal module includes: polymer network stabilized liquid crystal layer, and the polymer network is steady
Determining liquid crystal layer includes towards the 4th surface of first substrate and towards the 5th surface of the second substrate；First alignment layer is located at institute
It states on the 4th surface of polymer network stabilized liquid crystal layer；And second orientation layer, it is located at the polymer network stabilized liquid crystal
On 5th surface of layer.
In some embodiments, the transparent display panel further include: first electrode layer, positioned at the back of the Liquid crystal module
To the side of the second substrate；And the second electrode lay, positioned at the side back to first substrate of the Liquid crystal module, wherein institute
State first electrode layer and the second electrode lay be configured to control the multiple pixel unit light-scattering state and light transmission state it
Between switch.
In some embodiments, the second substrate includes the third surface towards first substrate, the first electrode layer
On the second surface of the first substrate, the second electrode lay is located on the third surface of the second substrate.
In some embodiments, the second substrate includes third surface towards first substrate and back to first base
6th surface of plate, the transparent display panel further include light absorption unit, are arranged in the peripheral surface of the second substrate, described outer
Perimeter surface is between the third surface and the 6th surface.
In some embodiments, the transparent display panel further include: light source, the surface of light source is to the light incident surface cloth
It sets and is configured to provide the incident beam.
Embodiment of the disclosure additionally provides a kind of transparent display panel production method, comprising steps of providing first substrate
And the second substrate；Holographic film is made on the first surface of first substrate；And by Liquid crystal module setting in first substrate and the
Between two substrates and in conjunction with first substrate and the second substrate, and the first surface of first substrate is arranged towards Liquid crystal module.
In some embodiments, described includes: first the step of making holographic film on the first surface of first substrate
Photosensitive material layer is coated on the first surface of substrate；The photosensitive material layer is exposed using reference beam and object beam
Light is to form interference figure in the photosensitive material layer；And by the photosensitive material layer development shape for being formed with interference figure
At holographic film.
In some embodiments, described that the photosensitive material layer is exposed in institute using reference beam and object beam
Stating the step of interference figure is formed in photosensitive material layer includes: in use reference beam and object beam using mask to described photosensitive
The pattern in the multiple bar shaped portions being separated from each other is formed while material layer is exposed in the photosensitive material layer.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of embodiment of the present disclosure, the attached drawing of embodiment will be carried out below
Brief description, it should be appreciated that figures described below merely relates to some embodiments of the present disclosure, rather than to disclosure text
This limitation, in which:
Fig. 1 shows a kind of structural schematic diagram of transparent display panel according to an embodiment of the present disclosure；
Fig. 2 shows the structural schematic diagrams of another transparent display panel according to an embodiment of the present disclosure；
Fig. 3 shows showing for the formation of the interference figure in the holographic film in transparent display panel according to an embodiment of the present disclosure
It is intended to；
Fig. 4 shows the structural schematic diagram of another transparent display panel according to an embodiment of the present disclosure；
Fig. 5 shows the structural schematic diagram of another transparent display panel according to an embodiment of the present disclosure；
Fig. 6 schematically shows the position of pixel unit and holographic film in transparent display panel according to an embodiment of the present disclosure
Set the example of relationship；
Fig. 7 A shows first electrode layer in transparent display panel according to an embodiment of the present disclosure and the second electrode lay
Exemplary schematic diagram；
Fig. 7 B shows first electrode layer in transparent display panel according to an embodiment of the present disclosure and the second electrode lay
Another exemplary schematic diagram；
Fig. 8 shows the flow chart of transparent display panel production method according to an embodiment of the present disclosure；
Fig. 9 schematically shows the specific example of the step S20 in Fig. 8；And
Figure 10 schematically shows the forming process of the holographic film in transparent display panel according to an embodiment of the present disclosure.
Specific embodiment
For the objects, technical solutions and advantages for more clearly illustrating the disclosure, below with reference to attached drawing to the reality of the disclosure
Example is applied to be described in detail.It should be appreciated that the description below with embodiment is intended to solve the general plotting of the disclosure
It releases and illustrates, without being understood as the limitation to the disclosure.In the specification and illustrated in the drawings, the same or similar appended drawing reference
Refer to the same or similar component or component.For clarity, the drawings are not necessarily drawn to scale, and may save in attached drawing
Some well-known components and structure are omited.
Unless otherwise defined, the technical term or scientific term that the disclosure uses should be tool in disclosure fields
The ordinary meaning for thering is the personage of general technical ability to be understood." first ", " second " used in the disclosure and similar word are simultaneously
Any sequence, quantity or importance are not indicated, and are used only to distinguish different component parts.Word "a" or "an" is not
It excludes multiple.The similar word such as " comprising " or "comprising", which means to occur element or object before the word, to be covered and appears in
The element of the word presented hereinafter perhaps object and its equivalent and be not excluded for other elements or object." connection " or " connected "
It is not limited to physics or mechanical connection etc. similar word, but may include electrical connection, either directly
Or it is indirect."upper", "lower", "left", "right" "top" or "bottom" etc. are only used for indicating relative positional relationship, when being described
After the absolute position of object changes, then the relative positional relationship may also correspondingly change.When such as layer, film, region or substrate
When the element of substrate etc is referred to as being located at "above" or "below" another element, which " direct " can be located at another element "upper"
Or "lower", or may exist intermediary element.
Embodiment of the disclosure discloses a kind of transparent display panel 100.As shown in Figure 1, the transparent display panel 100 is wrapped
It includes: first substrate 10, the second substrate 20, the Liquid crystal module 30 between the first substrate 10 and the second substrate 20 and position
Holographic film 40 between first substrate 10 and Liquid crystal module 30.The holographic film 40 can be made of clear material.First substrate
10 include first surface 11 towards the second substrate 20 and back to the second substrate 20 second surface 12 and be located at described first
At least one light incident surface 13 between surface 11 and second surface 12, for receiving incident beam 50.The second substrate 20 is wrapped
Include the third surface 21 towards first substrate 10.Liquid crystal module 30 has multiple pixel units 31, and each pixel unit 31 is at least
With light-scattering state and light transmission state both states, and can switch between light-scattering state and light transmission state.
Respectively different states can be presented (in such as light-scattering state and light transmission state in different pixel units 31 in Liquid crystal module 30
One kind).When pixel unit 31 is in light-scattering state, which will be presented similar " hair under the irradiation of light beam
The fuzzy state of glass ", the transparent form observed by user is different when this is in light transmission state with pixel unit 31
's.Contrast of both states in display effect can be used in forming image.
Since this scheme does not need the structures such as setting polaroid, optical filter, so transparent display panel 100 and routine
Liquid crystal display panel is compared, and can have better transparency, so that user can observe transparent show through transparent display panel 100
Show the scenery at 100 rear of panel.Herein, " transparent display panel " indicates the display panel for being used for transparence display, is showing
The scenery at transparent display panel rear can also be observed while image through the display panel.
In some embodiments, Liquid crystal module 30 may include the composite film of polymer and liquid crystal, such as can be with poly-
Based on conjunction object dispersed LCD (PDLC) material or polymer network stabilized liquid crystal (PSLC) material.
Polymer dispersed liquid crystals (PDLC) material is that liquid crystal is dispersed in organic solid-state in the form of droplet (such as micron dimension)
It is formed by, is freely orientated since the optical axis for the droplet being made of liquid crystal molecule is in, the folding of liquid crystal molecule in polymer matrix body
The refractive index for penetrating rate and polymeric matrix mismatches, and is scattered by droplet along all directions when light passes through matrix, thus polymerize
Object dispersed liquid crystal material is in opaque state or translucent (i.e. light-scattering state).And it is micro- to apply electric field-tunable section liquid crystal
The direction of optic axis of drop, when the refractive index of the refractive index of liquid crystal molecule and polymeric matrix matches, polymer dispersed liquid crystals material
Transparent state (i.e. light transmission state) is presented in material.After removing electric field, liquid crystal droplet restore again it is initial by light to all directions
The state of scattering (in such cases, polymer dispersion liquid crystal material is in light-scattering state).Polymer dispersion liquid crystal material
Above-mentioned characteristic can be used for above-mentioned pixel unit 31 to show image.
Polymer network stabilized liquid crystal (PSLC) material is one kind that a small amount of polymer forms that network is orientated with stabilizing liquid crystal
Photoelectricity composite material.Cause variations in refractive index since oriented of the liquid crystal molecule in polymer network is different, is not applying
When added electric field, transparent state (i.e. light transmission state) is presented in polymer network stabilized liquid crystal material, and after applying appropriate electric field, by
Anchoring effect between polymer network and liquid crystal, by the reorientation of restricted part liquid crystal in the electric field, keeps liquid crystal molecule miscellaneous
Disorderly arrangement, shows different refractive index, is scattered that (i.e. polymer network stabilized liquid crystal material be in light and scatters to incident light
State).The above-mentioned characteristic of polymer network stabilized liquid crystal material can be used for above-mentioned pixel unit 31 to show image.
As an example, the Liquid crystal module based on polymer network stabilized liquid crystal material can be general by pouring into liquid crystal cell
After logical liquid crystal molecule and polymerizable liquid crystal monomer, polymer network is formed by ultraviolet light.By polymeric web
The influence of network, liquid crystal response speed for example can reach 1 millisecond or so.Liquid crystal module based on polymer dispersion liquid crystal material can also
To make in a similar way, details are not described herein.
In some embodiments, comprising polymer network stabilized liquid crystal material or polymer point in each pixel unit 31
Liquid crystal material is dissipated, such as can be by being applied to the polymer network stabilized liquid crystal material or polymer dispersion liquid crystal material two sides
On voltage come control each pixel unit 31 state switching, to obtain display image.
In some embodiments, Liquid crystal module 30 may include polymer dispersed liquid crystal layer 32, as shown in Figure 2.Another
In a little embodiments, as shown in Figure 1, Liquid crystal module 30 may include polymer network stabilized liquid crystal layer 33.It is wrapped in Liquid crystal module 30
In the case where including polymer network stabilized liquid crystal layer 33, it can also be respectively equipped on the two sides of polymer network stabilized liquid crystal layer 33
First alignment layer 34 and second orientation layer 35.For example, polymer network stabilized liquid crystal layer 33 may include towards first substrate 10
The 4th surface 24 and the 5th surface 25 towards the second substrate 20, and can be located at the polymer network steady for first alignment layer 34
Determine on the 4th surface 24 of liquid crystal layer 33, second orientation layer 35 can be located at the 5th table of the polymer network stabilized liquid crystal layer 33
On face 25.
Holographic film 40 can be transparent (being made of clear material), and the aobvious of transparent display panel 100 can be improved
Show uniformity, it is especially even more so in the case where incident beam 50 as shown in Figure 1 is incident from the side of first substrate 10.
If being not provided with holographic film 40, incident beam 50 is irradiated to the pixel in light transmission state after entering first substrate 10
When unit 31, most light beams will approximately along former direction pass through the second substrate 20, in that way it is possible to cause when user in face of
The direction of incident beam can experience very strong brightness when observing transparent display panel 100, and in the other direction, and brightness can be compared with
It is weak.In other words, the exit direction after passing through Liquid crystal module 30 and the second substrate 20 of incident beam 50 compares concentration, thus leads
Cause the brightness irregularities for the light being emitted from the second substrate 20.And holographic film 40 may be used to incident beam 50 and pass through liquid crystal group
Exit direction relative distribution after part 30 and the second substrate 20, to improve the brightness uniformity for the light being emitted from the second substrate 20.
In some embodiments, as shown in figure 3, holographic film 40 records have formed by object beam 51 and reference beam 52 it is dry
Relate to pattern.By the principle of holographic recording it is found that when the holographic film 40 is irradiated by light beam identical with 52 direction of reference beam, from
Holographic film 40 be emitted light beam there will be most along object beam 51 direction propagate (this can be regarded as to object beam 51
The reproduction of wavefront).Using such property of holographic film 40, at least part of incident beam 50 can be entered by the light
The direction that face 40 is irradiated on the first surface 11 is penetrated to be irradiated to the reference beam 52 when forming the interference figure
Direction on the holographic film 40 is consistent.In this manner it is possible to using the output intensity of 40 dispersed transparent display panel of holographic film, with
Improve the uniformity of brightness.
It should be noted that after incident beam 40 is by holographic film 40, and not all outgoing beam is each along object
The direction of light beam 51 is propagated, and is also had sub-fraction outgoing beam and is passed still along former direction (i.e. the direction of reference beam 52)
It broadcasts.This be also achieved that for outgoing beam the direction of propagation it is decentralized.And between object beam 51 and reference beam 52
It is better for the decentralized effect of the direction of propagation of outgoing beam when angle is bigger.In some embodiments, 51 He of object beam
Angle between reference beam 52 can for example be greater than 30 degree, even greater than 90 degree.It in some embodiments, can also be second
Light absorption unit 60 is arranged in the peripheral surface 22 of substrate 20, for absorbing the light for being distributed to the periphery of the second substrate 20 by holographic film 40
Beam part, this is particularly effective in the biggish situation of angle between object beam 51 and reference beam 52.The peripheral surface 22 can
To be located between the third surface 21 and the 6th surface 23 of the second substrate 20, the 6th surface 23 is the second substrate 20 back to first
The surface of substrate 10.
For such as Fig. 1 50 oblique incidence of incident beam the case where, it is expected that when pixel unit 31 is in light transmission state,
The pixel unit 31 is visually in pellucidity.It in the case, is not from the stronger light beam that pixel unit 31 penetrates
It is desired, visual effect may be will affect (as generated speck, brightness irregularities etc.).By above-mentioned holographic film 40 for light beam
The extinction of dispersion and light absorption unit can play the role of weakening or inhibition to these undesirable light beams.
Pixel unit 31 in different states is shown in FIG. 1.Each picture is substantially depicted with parallel dotted line in figure
Region between two adjacent dotted lines can be regarded as a pixel unit 31 by the position of plain unit 31.Incident light in Fig. 1
Beam (being indicated with solid single arrow) becomes the object light along the interference figure formed in holographic film 40 after by holographic film 40
The two-beam of the direction (being indicated in Fig. 1 with solid double-head arrow) of beam and reference beam injection Liquid crystal module 30.The leftmost side in Fig. 1
Pixel unit be in light transmission state, therefore, this two-beam can be respectively transmitted through Liquid crystal module 30.And from a left side in Fig. 1
The pixel unit 31 of number thirds be in light-scattering state, the two-beam of injection Liquid crystal module 30 by the pixel unit 31 scatter to
All directions (are indicated in Fig. 1 with hollow arrow).
In some embodiments, the refractive index of holographic film 40 can be greater than or equal to the refractive index of first substrate 10, this can
To prevent interface of the incident beam 50 into first substrate 10 between first substrate 10 and holographic film 40 to be totally reflected.
Similarly, in some embodiments, the part contacted in Liquid crystal module 30 with holographic film 40 (such as can be polymer dispersion liquid
Crystal layer 32 or first alignment layer 34 etc.) refractive index can be greater than or equal to holographic film 40 refractive index, this can prevent from entering
Interface of the incident beam 50 of first substrate 10 between holographic film 40 and Liquid crystal module 30 is totally reflected.
In some embodiments, holographic film 40 can be designed to discrete form, i.e. holographic film 40 includes being spaced each other
Multiple bar shaped portions 41 of arrangement.As shown in fig. 6, multiple pixel units 31 in Liquid crystal module 30 are arranged into matrix form.The square
Battle array may include multirow pixel unit 31 and multiple row pixel unit 31.Each square in Fig. 6 represents a pixel unit 31.?
Horizontal direction can be regarded as to line direction in Fig. 6, and regard vertical direction as column direction, however, embodiment of the disclosure
Without being limited thereto, " row " and " column " herein should not be understood as any specific of the orientation for pixel unit 31
It limits.Each bar shaped portion 41 in holographic film 40 is in the orthographic projection on Liquid crystal module 30 and the column pixel unit in the matrix
31 overlappings.As an example, the gap between two adjacent bar shaped portions 41 can be lower than the folding of first substrate 10 with refractive index
Penetrate the medium 42 of rate fill (such as make incident beam 50 between first substrate 10 and the medium 42 interface meet be all-trans
Penetrate condition).In this way, when incident beam 50 is irradiated at the position between two bar shaped portions 41, it may be due to the effect of total reflection
Without being emitted.This design of holographic film 40 can suitably cut down the light quantity that Liquid crystal module 30 is injected from first substrate 10,
Thereby may be ensured that has enough backlight intensities in first substrate 10.First substrate 10 can regard light guide plate as.
In such a case, it is possible to change the face in each bar shaped portion 41 in holographic film 40 for each column pixel unit 31
Product, to make transparent display panel outgoing beam light distribution more evenly.For example, for incident beam 50 shown in FIG. 1
It is incident on the situation in first substrate 10 from left side, incident beam 50 is irradiated to each of holographic film 40 after entering first substrate 10
Intensity on a part is different in fact.The light intensity that the part closer from light incident surface 13 receives in holographic film 40 is bigger.
This aspect is entered more concentrating from the light distribution at the closer position of light incident surface 13 from light due to incident beam 50
The light distribution penetrated at 13 remote position of face relatively disperses, on the other hand also with the light intensity of incident beam 50 with incident beam 50
Propagation in first substrate 10 and decayed related.For this purpose, for it is as shown in Figure 1 only include being located at first substrate 10
The situation of the light incident surface 13 (the first light incident surface 131) of side, holographic film 40 can be arranged to multiple in holographic film 40
Positive throwing of the bar shaped portion 41 closer from first light incident surface 131 on the first surface 11 of first substrate 10 in bar shaped portion 41
The area of shadow is smaller.The area of orthographic projection of the bar shaped portion 41 on the first surface 11 of first substrate 10 is smaller, it is meant that from
The intensity of the light beam of one substrate 10 outgoing is also lower.Then, for bar shaped portion 41 area adjustment, can effectively improve out
The uniformity of irradiating light beam.
In other examples, as shown in figure 4, having incident beam injection in the two sides of first substrate 10.That is, the first base
At least one light incident surface 13 of plate 10 includes the first light incident surface for being located at the reciprocal two sides of first substrate 10
131 and second light incident surface 132.In this case, close first light incident surface 131 and the second light incident surface of holographic film 40
132 part will receive the irradiation of stronger light beam, and separate with the first light incident surface 131 and the second light incident surface 132
Holographic film 40 the intensity of light beam that then receives of middle section it is lower.Therefore, holographic film 40 can be arranged to: described more
Close to the bar shaped portion 41 of first light incident surface 131 and close to the bar shaped of second light incident surface 132 in a bar shaped portion 41
The area of orthographic projection of the portion 41 on the first surface 11 of first substrate 10 is less than and first light incident surface 131 and the second light
The area of orthographic projection of the separate bar shaped portion 41 of the plane of incidence 132 on the first surface 11 of first substrate 10.In this way,
By the adjustment of the area for bar shaped portion 41, holographic film 40 also can effectively improve the uniformity of outgoing beam.
In some embodiments, transparent display panel 100 can also include: first electrode layer 71 and the second electrode lay 72.
Wherein, first electrode layer 71 can be located at the side back to the second substrate 20 of the Liquid crystal module 30, and the second electrode lay 72 can position
In the side back to first substrate 10 of the Liquid crystal module 30.The first electrode layer 71 and the second electrode lay 72 can configure
Switch between light-scattering state and light transmission state at the multiple pixel unit 31 is controlled.As previously mentioned, Liquid crystal module 30
State can be changed by the electric field being applied between first electrode layer 71 and the second electrode lay 72, for example, for based on poly-
The Liquid crystal module of object dispersed liquid crystal material is closed, pixel unit 31 thereon is in light transmission in the case where applying electric field appropriate
State, and light-scattering state will be in after removing electric field.Similarly, for based on polymer network stabilized liquid crystal material
Liquid crystal module, pixel unit 31 thereon is in light-scattering state in the case where applying electric field appropriate, and is removing electric field
It will be in light transmission state later.
In some embodiments, as shown in Figure 7 A, one in first electrode layer 71 and the second electrode lay 72 can be set
At the form of point electrode array, wherein each point electrode 711 corresponds to a pixel on Liquid crystal module 30, and first electrode layer
71 and the second electrode lay 72 in another the form of face electrode can be set into.By being sought for each point electrode 711
Location can control the voltage of each 31 two sides of pixel unit.
In further embodiments, as shown in Figure 7 B, first electrode layer 71 includes multiple first electrode items arranged in parallel
712, the second electrode lay 72 includes multiple second electrode items 722 arranged in parallel.The extending direction of first electrode item 712 and second
The extending direction of electrode strip 722 is mutually perpendicular to.Each pixel unit 31 corresponds to first electrode item 712 and second electrode item 722
A crosspoint.It, can be by corresponding first electrode article 712 and the when wishing that some pixel unit 31 changes state
Two electrode strips 722 are powered to realize.The control for each first electrode item 712 and second electrode item 722 can also be passed through in this way
System is to realize that the voltage to each 31 two sides of pixel unit controls.
The arrangement of first electrode layer 71 and the second electrode lay 72 is not limited to Fig. 7 A and figure in embodiment of the disclosure
Form shown in 7B, those skilled in the art can be using any of electrode arrangement forms in this field.For example, the first electricity
Pole layer 71 and the second electrode lay 72 be also arranged so that be point electrode form or one of them be point electrode form,
The other is the form etc. of strip electrode.
In some embodiments, first electrode layer 71 can be located on the second surface 12 of the first substrate 10, and described the
Two electrode layers 72 can be located on the third surface 21 of the second substrate 20.First electrode layer 71 is formed in the first substrate 10
Second surface 12 on, can to avoid with holographic film 40 formed first substrate 10 the same side, can prevent from forming first in this way
The technique of electrode layer 71 impacts holographic film 40, especially when first electrode layer 71 using high temperature deposition to be formed when be even more such as
This.However, embodiment of the disclosure is without being limited thereto, first electrode layer 71 and the second electrode lay 72 can also be located elsewhere,
For example, the second electrode lay 72 can be located at the second substrate 20 back on the surface of first substrate 10.
In some embodiments, which can also include light source 80.Light source 80 is incident in face of the light
Face 13 is arranged and configured to provide the incident beam 50.In some embodiments, which can only include
Light source 80 positioned at the side of first substrate 10, as shown in Figure 1.And in further embodiments, transparent display panel 100 " can
To include the first light source 81 and second light source 82 for being located at the two sides of first substrate 10, as shown in figure 4,81 He of first light source
Second light source 82 is arranged respectively for the first light incident surface 131 and the second light incident surface 132.In embodiment of the disclosure, should
Light source can be known in the art any light source, including light emitting diode, filament, fluorescent tube etc..In some embodiments,
Light source can be monochrome, be also possible to polychrome.For example, can have by switching to realize colorful display effect
The multiple light sources of different colours provide the incident beam of different colours.
In embodiment of the disclosure, incident beam 50 can be the light beam for passing through the general parallel orientation collimated, can be with suitable
When inclination angle inject first substrate 10.
In some embodiments, first substrate 10 and the second substrate 20 may each be glass substrate, for example, first substrate 10
It is transparent with the second substrate 20.
Fig. 2 shows another transparent display panels 100 ' based on embodiment of the disclosure.The transparent display panel
100 ' include the Liquid crystal module 30 based on polymer network stabilized liquid crystal material and have the incidence for being located at 10 unilateral side of first substrate
Light beam.Fig. 5 shows another transparent display panel 100 " based on embodiment of the disclosure '.The transparent display panel 100 " '
Including the Liquid crystal module 30 based on polymer network stabilized liquid crystal material and there is the incident beam for being located at 10 two sides of first substrate.
Fig. 2 and embodiment shown in fig. 5 will only be based on polymer network stabilized liquid crystal compared with Fig. 1 and embodiment shown in Fig. 4
The Liquid crystal module 30 of material has been substituted for the Liquid crystal module 30 based on polymer dispersion liquid crystal material.Detail repeats no more.
Embodiment of the disclosure additionally provides a kind of transparent display panel production method.As shown in figure 8, this method comprises:
Step S10: first substrate and the second substrate are provided；
Step S20: holographic film is made on the first surface of first substrate；And
Step S30: by Liquid crystal module be arranged between first substrate and the second substrate and with first substrate and the second substrate
In conjunction with, and arrange that the first surface of first substrate towards Liquid crystal module.
By the first surface of first substrate towards Liquid crystal module, can make holographic film be located at first substrate and Liquid crystal module it
Between.
In some embodiments, as shown in figure 9, the step S20 includes:
Step S21: photosensitive material layer is coated on the first surface of first substrate；
Step S22: the photosensitive material layer is exposed in the photosensitive material using reference beam and object beam
Interference figure is formed in layer；And
Step S23: by developing to form holographic film to the photosensitive material layer for being formed with interference figure.
Figure 10 gives the process of production holographic film.Stage (a) in Figure 10 provides the first substrate 10 of blank.
Stage (b) in Figure 10 coats photosensitive material layer 90 on the first surface 11 of first substrate 10.The coating procedure for example may be used
It is completed in a manner of through spin coating etc..Stage (c) in Figure 10, reference beam 51 and object beam 52 interfere and to photosensitive
Material layer 90 is exposed, so that forming interference figure in photosensitive material layer 90.If necessary in finally formed holographic film
The multiple bar shaped portions 41 being separated from each other are formed in 40, then at this stage in (c), then can use mask 91 to photosensitive material layer 90
It is exposed, which may include pattern corresponding with the multiple bar shaped portion 41.Thus it is possible to joined using mask
It examines while light beam and object beam are exposed the photosensitive material layer to be formed in the photosensitive material layer and be separated from each other
The pattern in multiple bar shaped portions.In some embodiments, the angle between the reference beam and object beam can be greater than 30 degree, example
Such as larger than 90 degree.Stage (d) in Figure 10 develops to the photosensitive material layer for being formed with interference figure, to be formed complete
Cease film.The developing process can for example be carried out by developer solution.
In some embodiments, as shown in figure 8, the transparent display panel production method further include:
Step S40: before making holographic film on the first surface of first substrate, in first substrate and first table
First electrode layer is made on the opposite second surface in face and the is made on the third surface towards first substrate of the second substrate
Two electrode layers.
This can make first electrode layer 71 and holographic film 40 be respectively formed in the two sides of first substrate, can be holographic in production
First electrode layer 71 is just formed before film 40.This can to avoid the conditions such as high temperature in the technique of first electrode layer 71 for
Holographic film 40 adversely affects.
Above-mentioned transparent display panel production method is only exemplary, and embodiment of the disclosure is without being limited thereto.
Although the disclosure is illustrated in conjunction with attached drawing, embodiment disclosed in attached drawing is intended to the reality to the disclosure
It applies example to illustrate, and should not be understood as a kind of limitation to the disclosure.Dimension scale in attached drawing is only to illustrate
Property, the limitation to the disclosure can not be interpreted as.
Above-described embodiment is only illustrative to illustrate the principle and construction of the disclosure, not for the limitation disclosure, ability
The technical staff in domain it should be appreciated that without departing from the general plotting of the disclosure, to any change made by the disclosure and
Improvement is within the scope of this disclosure.The protection scope of the disclosure, the range that should be defined such as following claims are
It is quasi-.
Claims (18)
1. a kind of transparent display panel, comprising:
First substrate and the second substrate, the first substrate include first surface towards the second substrate and back to the second substrate
Second surface and between the first surface and second surface, at least one light for receiving incident beam it is incident
Face；
Liquid crystal module between the first substrate and the second substrate, the Liquid crystal module has can be in light-scattering state
The multiple pixel units switched between light transmission state；And
Transparent holographic film between first substrate and Liquid crystal module.
2. transparent display panel according to claim 1, wherein the holographic film record has by object beam and reference beam
At least part of the interference figure of formation, the incident beam is irradiated on the first surface by the light incident surface
Direction is consistent with the direction that the reference beam is irradiated on the holographic film when forming the interference figure.
3. transparent display panel according to claim 1, wherein
Angle between the reference beam and object beam is greater than 30 degree.
4. transparent display panel according to claim 3, wherein
Angle between the reference beam and object beam is greater than 90 degree.
5. transparent display panel according to claim 1, wherein
The refractive index of the holographic film is greater than or equal to the refractive index of the first substrate.
6. transparent display panel according to claim 1, wherein
The refractive index of the part contacted in the Liquid crystal module with the holographic film is greater than or equal to the refractive index of the holographic film.
7. transparent display panel according to any one of claim 1 to 6, wherein the multiple pixel unit is at matrix
Arrangement, the holographic film include the multiple bar shaped portions being arranged at distances from one another, orthographic projection of each bar shaped portion on Liquid crystal module with
Column pixel unit overlapping in the matrix.
8. transparent display panel according to claim 7, wherein at least one described light incident surface only includes positioned at described
First light incident surface of the side of first substrate, the bar shaped portion closer from first light incident surface exists in the multiple bar shaped portion
The area of orthographic projection on the first surface of first substrate is smaller.
9. transparent display panel according to claim 7, wherein at least one described light incident surface includes being located at the
The first light incident surface and the second light incident surface of the reciprocal two sides of one substrate, close to described the in the multiple bar shaped portion
The positive throwing of the bar shaped portion of one light incident surface and the bar shaped portion of close second light incident surface on the first surface of first substrate
The area of shadow is less than the bar shaped portion separate with first light incident surface and the second light incident surface in the first table of first substrate
The area of orthographic projection on face.
10. transparent display panel according to any one of claim 1 to 6, wherein the Liquid crystal module includes polymer
Dispersing liquid crystal layer.
11. transparent display panel according to any one of claim 1 to 6, wherein the Liquid crystal module includes:
Polymer network stabilized liquid crystal layer, the polymer network stabilized liquid crystal layer include towards first substrate the 4th surface and
Towards the 5th surface of the second substrate；
First alignment layer, on the 4th surface of the polymer network stabilized liquid crystal layer；And
Second orientation layer, on the 5th surface of the polymer network stabilized liquid crystal layer.
12. transparent display panel according to any one of claim 1 to 6, further includes:
First electrode layer, positioned at the side back to the second substrate of the Liquid crystal module；And
The second electrode lay, positioned at the side back to first substrate of the Liquid crystal module,
Wherein, the first electrode layer and the second electrode lay are configured to control the multiple pixel unit in light-scattering state and light
Switch between transmissive state.
13. transparent display panel according to claim 12, wherein the second substrate includes towards first substrate
Three surfaces, the first electrode layer are located on the second surface of the first substrate, and the second electrode lay is located at described second
On the third surface of substrate.
14. transparent display panel according to any one of claim 1 to 6, wherein the second substrate includes towards
The third surface of one substrate and the 6th surface back to the first substrate:
The transparent display panel further includes light absorption unit, is arranged in the peripheral surface of the second substrate, the peripheral surface position
Between the third surface and the 6th surface.
15. transparent display panel according to any one of claim 1 to 6, further includes:
Light source, the surface of light source are arranged and configured to the light incident surface to provide the incident beam.
16. a kind of transparent display panel production method, comprising steps of
First substrate and the second substrate are provided；
Holographic film is made on the first surface of first substrate；And
Liquid crystal module is arranged between first substrate and the second substrate and in conjunction with first substrate and the second substrate, and by first
The first surface of substrate is arranged towards Liquid crystal module.
17. transparent display panel production method according to claim 16, wherein the first surface in first substrate
The step of upper production holographic film includes:
Photosensitive material layer is coated on the first surface of first substrate；
The photosensitive material layer is exposed to be formed and be interfered in the photosensitive material layer using reference beam and object beam
Pattern；And
By developing to form holographic film to the photosensitive material layer for being formed with interference figure.
18. transparent display panel production method according to claim 17, wherein described to use reference beam and object beam
The photosensitive material layer is exposed and includes: the step of interference figure to be formed in the photosensitive material layer
Using mask in the photosensitive material while being exposed using reference beam and object beam to the photosensitive material layer
The pattern in the multiple bar shaped portions being separated from each other is formed in the bed of material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910307636.3A CN109884820B (en) | 2019-04-16 | 2019-04-16 | Transparent display panel and manufacturing method thereof |
| PCT/CN2020/076788 WO2020211541A1 (en) | 2019-04-16 | 2020-02-26 | Transparent display panel, and method for manufacturing same |
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| CN201910307636.3A CN109884820B (en) | 2019-04-16 | 2019-04-16 | Transparent display panel and manufacturing method thereof |
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| CN110596808A (en) * | 2019-09-20 | 2019-12-20 | 京东方科技集团股份有限公司 | Backlight module and display device |
| WO2020211541A1 (en) * | 2019-04-16 | 2020-10-22 | 京东方科技集团股份有限公司 | Transparent display panel, and method for manufacturing same |
| WO2021233110A1 (en) * | 2020-05-18 | 2021-11-25 | 京东方科技集团股份有限公司 | Display apparatus, fabrication method therefor, and smart mirror |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109884820B (en) | 2021-11-23 |
| WO2020211541A1 (en) | 2020-10-22 |
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