CN104749811A - Liquid crystal panel and display device - Google Patents
Liquid crystal panel and display device Download PDFInfo
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- CN104749811A CN104749811A CN201510191077.6A CN201510191077A CN104749811A CN 104749811 A CN104749811 A CN 104749811A CN 201510191077 A CN201510191077 A CN 201510191077A CN 104749811 A CN104749811 A CN 104749811A
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- liquid crystal
- substrate
- crystal layer
- light
- cholesteric
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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
- G02F1/133553—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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention relates to a liquid crystal panel and a display device. The liquid crystal panel comprises a first substrate and a second substrate which are oppositely arranged; a first cholesteric liquid crystal layer is arranged at one side of the second substrate, far away from the first substrate and can be used for selectively enabling the transmission of the first part of the external light and reflecting the second part of the external light; a selecting reflecting layer is arranged between the first cholesteric liquid crystal layer and the first substrate and used for enabling the transmission of the first part of light under the first state and reflecting the first part of light under the second state. The liquid crystal panel has the beneficial effects that the first cholesteric liquid crystal layer and the selecting reflecting layer are arranged to achieve an efficient mirror display.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of panel and display device.
Background technology
Along with the development of technology, people also become variation to the requirement of display, display has been improved as having various additional function, mirror function is one wherein, namely, when display does not show image, mirror or reflective as mirror can be used as, but, the common structure of existing mirror liquid crystal display is the semi-transparent semi-reflecting film material (as APF) of common LCD surface laminating mirror effect, because this film reduces the light efficiency that transmitance reduces display.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of panel and display device, adopt cholesteric liquid crystal to make display realize the function of mirror, and owing to not adopting polaroid, improve the efficient of light.
In order to achieve the above object, the technical solution used in the present invention is: a kind of liquid crystal panel, comprises the first substrate and second substrate that are oppositely arranged,
Described second substrate is provided with the first cholesteric crystal layer away from the side of described first substrate, optionally through the Part I light in extraneous light and the Part II light in reflect external light;
Be provided with between described first cholesteric crystal layer and described first substrate and select reflection horizon, select reflection horizon to be used in a first state through described Part I light, reflect described Part I light in the second condition.
Further, described selection reflection horizon comprises the second cholesteric crystal layer be arranged between described first substrate and described second substrate.
Further, described first substrate and described second substrate are provided with transparency electrode, between described first substrate and described selection reflection horizon, are provided with the first absorption layer,
When described transparency electrode applies voltage to described selection reflection horizon, described selection reflection horizon is in described first state, described first absorption layer Absorbable rod from described selection reflection horizon through described Part I light;
When described transparency electrode does not apply voltage to described selection reflection horizon, described selection reflection horizon is in described second state, and described Part I light is after described selection reflective layer reflects, through described first cholesteric crystal layer.
Further, described Part I light is left-handed rotation, and described Part II light is right-handed rotation.
Further, described first cholesteric crystal layer is provided with the 3rd substrate, described 3rd substrate is used for the liquid crystal cell with described second substrate, box-like being become to accommodating described first cholesteric crystal layer.
Further, described Selective absorber layer comprises:
Be arranged at the phase retardation plate between described first cholesteric crystal layer and described second substrate;
Be arranged at the host and guest's property liquid crystal layer between described first substrate and second substrate, described host and guest's property liquid crystal layer through the light launched through described phase retardation plate, can reflect the light launched through described phase retardation plate in a third condition under the 4th state.
Further, described Part I light is left-handed rotation, and described Part II light is right-handed rotation, and described phase retardation plate is quarter-wave plate, and described Part I light can be become line polarisation by described phase retardation plate.
Further, described first substrate and described second substrate are provided with transparency electrode, between described first substrate and described host and guest's property liquid crystal layer, are provided with the second absorption layer,
Under the described third state, described transparency electrode applies voltage to described host and guest's property liquid crystal layer, described second absorption layer Absorbable rod from described host and guest's property liquid crystal layer through light;
Under described 4th state, described transparency electrode does not apply voltage to described host and guest's property liquid crystal layer, described line polarisation through described host and guest's property liquid crystal layer reflects, to become left-handed rotation through described phase retardation plate, then through described first cholesteric liquid crystal.
Further, the axis of orientation of described first cholesteric crystal layer and the angle of described phase retardation plate are-45 to spend, and the angle of the axis of orientation of described phase retardation plate and described host and guest's property liquid crystal layer is 45 degree.
Further, relative with the one side arranging described first cholesteric crystal layer on described second substrate another side is provided with color film.
The present invention also provides a kind of display device, comprises above-mentioned liquid crystal panel.
The invention has the beneficial effects as follows: the setting in the first cholesteric liquid crystal and selection reflection horizon, realizes high efficiency mirror display.
Accompanying drawing explanation
Fig. 1 represents embodiment of the present invention liquid crystal panel structure schematic diagram;
Fig. 2 represents on state of and dark-state contrast schematic diagram in the embodiment of the present invention;
Fig. 3 represents another embodiment of the present invention liquid crystal panel structure schematic diagram;
Fig. 4 represents another embodiment of the present invention liquid crystal panel structure schematic diagram; '
Fig. 5 represents on state of and dark-state contrast schematic diagram in another embodiment of the present invention.
Embodiment
Be described in detail to characteristic sum principle of the present invention below in conjunction with accompanying drawing, illustrated embodiment, only for explaining the present invention, not limits scope with this.
As shown in Figure 1, the present embodiment provides a kind of liquid crystal panel, comprises the first substrate 1 and second substrate 2 that are oppositely arranged,
Described second substrate 2 is provided with the first cholesteric crystal layer 3 away from the side of described first substrate 1, optionally through the Part I light in extraneous light and the Part II light in reflect external light;
Be provided with between described first cholesteric crystal layer 3 and described first substrate 1 and select reflection horizon, select reflection horizon to be used in a first state through described Part I light, reflect described Part I light in the second condition.
In the present embodiment, described Part I light is left-handed rotation, described Part II light is right-handed rotation, outside light shines described first cholesteric crystal layer 3, left-handed rotation in described first cholesteric crystal layer 3 transmissive extraneous light right-handed rotation in reflect external light makes liquid crystal panel realize the effect of mirror, select reflection horizon when the first state, from described first cholesteric crystal layer 3 through left-handed rotation can directly through select reflection horizon, display dark-state; Select reflection horizon when the second state, from described first cholesteric crystal layer 3 through left-handed rotation launch through described selection reflection horizon, then towards described first cholesteric crystal layer 3 advance and from described first cholesteric crystal layer 3 through, therefore, present on state of.No matter be on state of or dark-state, right-handed rotation is irradiated in the first cholesteric crystal layer 3 and all can occurs to launch with the effect making liquid crystal panel have mirror, select reflection horizon in the first state, namely during dark-state, from described first cholesteric crystal layer 3 through left-handed rotation directly through select reflection horizon and can not again from described first cholesteric crystal layer 3 through, so mirror effect is better, select reflection horizon arrange realize on state of and dark-state switching, to realize the display of image.
The specific constructive form in described selection reflection horizon can have multiple, as long as by a first state through described Part I light, in the second condition reflect described Part I light, with the switching realizing liquid crystal panel on state of and dark-state all can, below introduce the specific constructive form in the selection reflection horizon adopted in several embodiment of the present invention:
In one embodiment, described selection reflection horizon comprises the second cholesteric crystal layer 4 be arranged between described first substrate 1 and described second substrate 2.
In the present embodiment, the first cholesteric crystal layer 3 is cholesteric crystal layer of the right-handed spiral configuration of nematic liquid crystal, polymerisable monomer, right-handed chirality compound and light trigger composition.
Second cholesteric crystal layer 4 is cholesteric crystal layer of the left-handed spiral configuration of nematic liquid crystal, polymerisable monomer, left-handed chipal compounds and light trigger composition.
Further, described first substrate 1 and described second substrate 2 are provided with transparency electrode, between described first substrate 1 and described selection reflection horizon, are provided with the first absorption layer 5,
When described transparency electrode applies voltage to described selection reflection horizon, described selection reflection horizon is in described first state, described first absorption layer 5 Absorbable rod from described selection reflection horizon through described Part I light;
When described transparency electrode does not apply voltage to described selection reflection horizon, described selection reflection horizon is in described second state, and described Part I light is after described selection reflective layer reflects, through described first cholesteric crystal layer 3.
By the transparency electrode on first substrate 1 and second substrate 2, voltage is applied to the second cholesteric crystal layer 4, described first state is in make the second cholesteric crystal layer 4, now, liquid crystal in second cholesteric crystal layer 4 arranges along the direction of electric field, through described first cholesteric crystal layer 3 through left-handed rotation can from described second cholesteric crystal layer 4 through, then absorbed by the first absorption layer 5, therefore, liquid crystal panel presents dark-state.
When described transparency electrode does not apply voltage to described selection reflection horizon, described selection reflection horizon is in described second state, through described first cholesteric crystal layer 3 through left-handed rotation reflect in described second cholesteric crystal layer 4, and advance to described first cholesteric crystal layer 3, and from described first cholesteric crystal layer 3 through, therefore, liquid crystal panel presents on state of.
In the present embodiment, the contrast schematic diagram of the on state of of liquid crystal panel and dark-state as shown in Figure 2.
Further, described first cholesteric crystal layer 4 is provided with the 3rd substrate 7, described 3rd substrate 7 is for becoming the liquid crystal cell of accommodating described first cholesteric crystal layer 3 with described second substrate 2 pairs of box-likes.
Described first cholesteric crystal layer 3 can be solid-state, also can be the liquid crystal state of fluid, when described first cholesteric crystal layer 3 is liquid crystal state, described first cholesteric crystal layer 3 is fixing unstable only by described second substrate 2, easy leakage, in order to head it off, arranges the 3rd substrate 7 in the present embodiment, 3rd substrate 7 and described second substrate 2 pairs of box-likes become the liquid crystal cell of accommodating described first cholesteric crystal layer 3 with fixing described first cholesteric crystal layer 3, as shown in Figure 3.
In another embodiment, as shown in Figure 4, described Selective absorber layer comprises:
Be arranged at the phase retardation plate 8 between described first cholesteric crystal layer 3 and described second substrate 2;
Be arranged at the host and guest's property liquid crystal layer 10 between described first substrate 1 and second substrate 2, described host and guest's property liquid crystal layer 10 through the light launched through described phase retardation plate 8, can reflect the light launched through described phase retardation plate 8 in a third condition under the 4th state.
Further, described Part I light is left-handed rotation, and described Part II light is right-handed rotation, and described phase retardation plate 8 is quarter-wave plate, and described Part I light can be become line polarisation by described phase retardation plate 8.
Further, described first substrate 1 and described second substrate 2 are provided with transparency electrode, between described first substrate 1 and described host and guest's property liquid crystal layer 10, are provided with the second absorption layer 9,
Under the described third state, described transparency electrode applies voltage to described host and guest's property liquid crystal layer 10, described second absorption layer 9 Absorbable rod from described host and guest's property liquid crystal layer 10 through light;
Under described 4th state, described transparency electrode does not apply voltage to described host and guest's property liquid crystal layer 10, and described line polarisation reflects through described host and guest's property liquid crystal layer 10, become left-handed rotation through described phase retardation plate 8, then through described first cholesteric liquid crystal 3.
By the transparency electrode on first substrate 1 and second substrate 2, voltage is applied to host and guest's property liquid crystal layer 10, the described third state is in make host and guest's property liquid crystal layer 10, in a third condition, liquid crystal in host and guest's property liquid crystal layer 10 arranges along the direction of electric field, after described phase retardation plate 8, become line polarisation by the left-handed rotation of the first cholesteric crystal layer 3, this line polarisation can from host and guest's property liquid crystal layer 10 through, then absorbed by the second absorption layer 9, therefore, liquid crystal panel presents dark-state.
Transparency electrode on first substrate 1 and second substrate 2 does not apply voltage to host and guest's property liquid crystal layer 10, now, host and guest's property liquid crystal layer 10 is in described 4th state, under the 4th state, after described phase retardation plate 8, become line polarisation by the left-handed rotation of the first cholesteric crystal layer 3, this line polarisation reflects through host and guest's property liquid crystal layer 10, then turn back to phase retardation plate 8 and become left-handed rotation, this left-handed rotation can pass through described first cholesteric crystal layer 3, and therefore, liquid crystal panel presents on state of.
In another embodiment, liquid crystal panel presents the contrast schematic diagram of on state of and dark-state as shown in Figure 5.
Preferably, the described axis of orientation of the first cholesteric crystal layer 3 and the angle of described phase retardation plate 8 are-45 to spend, and described phase retardation plate 8 is 45 degree with the angle of the axis of orientation of described host and guest's property liquid crystal layer 10.
It should be noted that, can there is error in the described axis of orientation of the first cholesteric crystal layer 3 and the angle of described phase retardation plate 8 in practical operation, and in practical operation, the angle of this angle can between 40 degree ~ 50 degree; Can there is error with the angle of the axis of orientation of host and guest's property liquid crystal layer 10 is same in practical operation in phase retardation plate 8, in practical operation, the angle of this angle can between 40 degree ~ 50 degree.
In the present embodiment, host and guest's property liquid crystal layer 10 is made up of nematic liquid crystal and dichroic dye.
It should be noted that, transparency electrode on the transparency electrode of the above first substrate 1 and described second substrate 2 applies voltage to host and guest's property liquid crystal layer 10, form vertical electric field, liquid crystal in host and guest's property liquid crystal layer 10 arranges along the direction of electric field, so can be through after host and guest's property liquid crystal layer 10 by the later line polarisation of phase retardation plate 8, absorbed at the second absorption layer 9, therefore shown dark-state.
Can be through after host and guest's property liquid crystal layer 10 by the later line polarisation of phase retardation plate 8 as long as realize, voltage is applied to host and guest's property liquid crystal layer 10, formed horizontal component of electric field also can, now, described first substrate 1 or second substrate 2 are provided with and form two transparency electrodes of horizontal component of electric field.Liquid crystal now in host and guest's property liquid crystal layer 10 adopts nematic phase negative liquid crystal.
Optionally, relative with the one side arranging described first cholesteric crystal layer 3 on described second substrate 2 another side is provided with color film 6.
In the embodiment of the present invention, the cooperation in the first cholesteric crystal layer 3 and selection reflection horizon, realizes the mirror display not needing polaroid, can greatly improve the efficient of light.
The present invention also provides a kind of display device, comprises above-mentioned liquid crystal panel.
Be more than present pre-ferred embodiments, it should be noted that, to those skilled in the art, under the prerequisite not departing from principle of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as scope.
Claims (11)
1. a liquid crystal panel, comprises the first substrate and second substrate that are oppositely arranged, it is characterized in that,
Described second substrate is provided with the first cholesteric crystal layer away from the side of described first substrate, optionally through the Part I light in extraneous light and the Part II light in reflect external light;
Be provided with between described first cholesteric crystal layer and described first substrate and select reflection horizon, select reflection horizon to be used in a first state through described Part I light, reflect described Part I light in the second condition.
2. liquid crystal panel according to claim 1, is characterized in that, described selection reflection horizon comprises the second cholesteric crystal layer be arranged between described first substrate and described second substrate.
3. liquid crystal panel according to claim 2, is characterized in that, described first substrate and described second substrate are provided with transparency electrode, is provided with the first absorption layer between described first substrate and described selection reflection horizon,
When described transparency electrode applies voltage to described selection reflection horizon, described selection reflection horizon is in described first state, described first absorption layer Absorbable rod from described selection reflection horizon through described Part I light;
When described transparency electrode does not apply voltage to described selection reflection horizon, described selection reflection horizon is in described second state, and described Part I light is after described selection reflective layer reflects, through described first cholesteric crystal layer.
4. liquid crystal panel according to claim 1, is characterized in that, described Part I light is left-handed rotation, and described Part II light is right-handed rotation.
5. liquid crystal panel according to claim 1, is characterized in that, described first cholesteric crystal layer is provided with the 3rd substrate, and described 3rd substrate is used for the liquid crystal cell with described second substrate, box-like being become to accommodating described first cholesteric crystal layer.
6. liquid crystal panel according to claim 1, is characterized in that, described Selective absorber layer comprises:
Be arranged at the phase retardation plate between described first cholesteric crystal layer and described second substrate;
Be arranged at the host and guest's property liquid crystal layer between described first substrate and second substrate, described host and guest's property liquid crystal layer through the light launched through described phase retardation plate, can reflect the light launched through described phase retardation plate in a third condition under the 4th state.
7. liquid crystal panel according to claim 6, it is characterized in that, described Part I light is left-handed rotation, and described Part II light is right-handed rotation, described phase retardation plate is quarter-wave plate, and described Part I light can be become line polarisation by described phase retardation plate.
8. liquid crystal panel according to claim 7, is characterized in that, described first substrate and/or described second substrate are provided with transparency electrode, is provided with the second absorption layer between described first substrate and described host and guest's property liquid crystal layer,
Under the described third state, described transparency electrode applies voltage to described host and guest's property liquid crystal layer, described second absorption layer Absorbable rod from described host and guest's property liquid crystal layer through light;
Under described 4th state, described transparency electrode does not apply voltage to described host and guest's property liquid crystal layer, described line polarisation through described host and guest's property liquid crystal layer reflects, to become left-handed rotation through described phase retardation plate, then through described first cholesteric liquid crystal.
9. liquid crystal panel according to claim 6, is characterized in that, the axis of orientation of described first cholesteric crystal layer and the angle of described phase retardation plate are-45 to spend, and the angle of the axis of orientation of described phase retardation plate and described host and guest's property liquid crystal layer is 45 degree.
10. liquid crystal panel according to claim 1, is characterized in that, another side relative with the one side arranging described first cholesteric crystal layer on described second substrate is provided with color film.
11. 1 kinds of display device, is characterized in that, comprise the liquid crystal panel described in any one of claim 1-10.
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| CN201510191077.6A CN104749811B (en) | 2015-04-21 | 2015-04-21 | A kind of liquid crystal display panel and display device |
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| CN201510191077.6A CN104749811B (en) | 2015-04-21 | 2015-04-21 | A kind of liquid crystal display panel and display device |
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| CN104749811A true CN104749811A (en) | 2015-07-01 |
| CN104749811B CN104749811B (en) | 2018-09-21 |
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Cited By (1)
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| CN104749811B (en) | 2018-09-21 |
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