CN104749811B - A kind of liquid crystal display panel and display device - Google Patents
A kind of liquid crystal display panel and display device Download PDFInfo
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- CN104749811B CN104749811B CN201510191077.6A CN201510191077A CN104749811B CN 104749811 B CN104749811 B CN 104749811B CN 201510191077 A CN201510191077 A CN 201510191077A CN 104749811 B CN104749811 B CN 104749811B
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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
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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
- G02F1/137—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 present invention relates to a kind of liquid crystal display panel and display devices, wherein, a kind of liquid crystal display panel, including the first substrate and second substrate being oppositely arranged, side of the second substrate far from the first substrate is equipped with the first cholesteric crystal layer, optionally penetrates the second part light in the first part's light and reflection extraneous light in extraneous light；It is provided with selection reflecting layer between first cholesteric crystal layer and the first substrate, selects reflecting layer for penetrating first part's light in the first state, reflects first part's light in the second condition.The beneficial effects of the invention are as follows：The setting of first cholesteric liquid crystal and selection reflecting layer, realizes efficient mirror display.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of panel and display devices.
Background technology
With the development of technology, requirement of the people to display also becomes diversification, and display is improved for each
Kind additional function, mirror function is one such, i.e., when display does not show image, is used as mirror or as mirror
Son is equally reflective, and still, the common structure of existing mirror liquid crystal display is the half of common LCD surface fitting mirror effect
Saturating half anti-membrane material (such as APF) reduces the light efficiency of display since the film reduces transmitance.
Invention content
In order to solve the above technical problem, the present invention provides a kind of panel and display devices, using cholesteric liquid crystal so that
Display realizes the function of mirror, and due to not using polaroid, improves the effective percentage of light.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of liquid crystal display panel, including be oppositely arranged
One substrate and second substrate,
Side of the second substrate far from the first substrate is equipped with the first cholesteric crystal layer, optionally penetrates
The second part light in first part's light and reflection extraneous light in extraneous light；
It is provided with selection reflecting layer between first cholesteric crystal layer and the first substrate, reflecting layer is selected to be used for
First part's light is penetrated in the first state, reflects first part's light in the second condition.
Further, the selection reflecting layer includes second be set between the first substrate and the second substrate
Cholesteric crystal layer.
Further, be both provided with transparent electrode on the first substrate and the second substrate, the first substrate and
The first absorbed layer is equipped between the selection reflecting layer,
The transparent electrode to the selection reflecting layer apply voltage when, the selection reflecting layer be in first shape
State, the absorbable first part's light penetrated from the selection reflecting layer of first absorbed layer；
The transparent electrode not to the selection reflecting layer apply voltage when, the selection reflecting layer be in second shape
State, first part's light through the selection reflecting layer reflect after, through first cholesteric crystal layer.
Further, first part's light is left-handed rotation, and the second part light is right-handed rotation.
Further, be provided with third substrate in first cholesteric crystal layer, the third substrate be used for it is described
Second substrate forms box the liquid crystal cell of accommodating first cholesteric crystal layer.
Further, the selection absorbed layer includes：
The phase retardation plate being set between first cholesteric crystal layer and the second substrate；
The host and guest's property liquid crystal layer being set between the first substrate and second substrate, host and guest's property liquid crystal layer is in third
The light emitted through the phase retardation plate can be penetrated under state, can be reflected under the 4th state and be sent out through the phase retardation plate
The light penetrated.
Further, first part's light is left-handed rotation, and the second part light is right-handed rotation, the phase retardation plate
For quarter-wave plate, first part's light can be become line polarisation by the phase retardation plate.
Further, be both provided with transparent electrode on the first substrate and the second substrate, the first substrate and
The second absorbed layer is equipped between host and guest's property liquid crystal layer,
Under the third state, the transparent electrode applies voltage to host and guest's property liquid crystal layer, and described second absorbs
The absorbable light penetrated from host and guest's property liquid crystal layer of layer；
Under the 4th state, the transparent electrode does not apply voltage, the line polarisation to host and guest's property liquid crystal layer
Become left-handed rotation through host and guest's property liquid crystal layer reflection, through the phase retardation plate and then penetrates first cholesteric liquid crystal.
Further, the axis of orientation of first cholesteric crystal layer and the angle of the phase retardation plate are -45 degree, institute
It is 45 degree to state phase retardation plate and the angle of the axis of orientation of host and guest's property liquid crystal layer.
Further, on another side opposite with the one side of the first cholesteric crystal layer is arranged on the second substrate
Equipped with color film.
The present invention also provides a kind of display devices, including above-mentioned liquid crystal display panel.
The beneficial effects of the invention are as follows：The setting of first cholesteric liquid crystal and selection reflecting layer, realizes efficient mirror
Display.
Description of the drawings
Fig. 1 shows liquid crystal panel structure schematic diagrames of the embodiment of the present invention；
Fig. 2 indicates that illuminated state and dark-state compare schematic diagram in the embodiment of the present invention；
Fig. 3 indicates another embodiment of the present invention liquid crystal panel structure schematic diagram；
Fig. 4 indicates another embodiment of the present invention liquid crystal panel structure schematic diagram；‘
Fig. 5 indicates illuminated state and dark-state control schematic diagram in another embodiment of the present invention.
Specific implementation mode
The feature and principle of the present invention are described in detail below in conjunction with attached drawing, illustrated embodiment is only used for explaining this hair
It is bright, the scope of the present invention is not limited with this.
As shown in Figure 1, the present embodiment provides a kind of liquid crystal display panels, including the first substrate 1 and second substrate being oppositely arranged
2,
Side of the second substrate 2 far from the first substrate 1 is equipped with the first cholesteric crystal layer 3, optionally
Through the second part light in the first part's light and reflection extraneous light in extraneous light；
It is provided with selection reflecting layer between first cholesteric crystal layer 3 and the first substrate 1, reflecting layer is selected to use
In penetrating first part's light in the first state, first part's light is reflected in the second condition.
In the present embodiment, first part's light is left-handed rotation, and the second part light is right-handed rotation, and external light shines
To first cholesteric crystal layer 3, left-handed rotation in first cholesteric crystal layer, 3 transmissive extraneous light simultaneously reflects
Right-handed rotation in extraneous light makes liquid crystal display panel realize the effect of mirror, selects reflecting layer in first state, from described the
The left-handed rotation that one cholesteric crystal layer 3 penetrates can show dark-state directly through selection reflecting layer；Select reflecting layer in the second state
When, the left-handed rotation penetrated from first cholesteric crystal layer 3 emits by the selection reflecting layer, then towards described the
One cholesteric crystal layer 3 is advanced and is penetrated from first cholesteric crystal layer 3, therefore, illuminated state is presented.Either illuminated state is also
It is dark-state, right-handed rotation, which is irradiated in the first cholesteric crystal layer 3, can all occur transmitting so that liquid crystal display panel has the effect of mirror
Fruit, select reflecting layer in first state, i.e. dark-state, from first cholesteric crystal layer 3 penetrate left-handed rotation directly through
It selects reflecting layer without being penetrated again from first cholesteric crystal layer 3, so mirror effect is more preferable, selects setting for reflecting layer
It sets and realizes the switching of illuminated state and dark-state, to realize the display of image.
The specific constructive form in the selection reflecting layer can there are many, as long as by penetrating described the in the first state
A part of light, reflect in the second condition first part's light, with realize the switching of liquid crystal display panel illuminated state and dark-state all can, with
The lower specific constructive form for introducing the selection reflecting layer used in several embodiment of the present invention：
In one embodiment, the selection reflecting layer includes being set between the first substrate 1 and the second substrate 2
Second cholesteric crystal layer 4.
In the present embodiment, the first cholesteric crystal layer 3 be nematic liquid crystal, polymerisable monomer, right-handed chirality compound and
The cholesteric crystal layer of the right-handed spiral configuration of photoinitiator composition.
Second cholesteric crystal layer 4 is nematic liquid crystal, polymerisable monomer, left-handed chipal compounds and photoinitiator composition
Left-handed spiral configuration cholesteric crystal layer.
Further, transparent electrode, the first substrate 1 are both provided on the first substrate 1 and the second substrate 2
The first absorbed layer 5 is equipped between the selection reflecting layer,
The transparent electrode to the selection reflecting layer apply voltage when, the selection reflecting layer be in first shape
State, the absorbable first part's light penetrated from the selection reflecting layer of first absorbed layer 5；
The transparent electrode not to the selection reflecting layer apply voltage when, the selection reflecting layer be in second shape
State, first part's light through the selection reflecting layer reflect after, through first cholesteric crystal layer 3.
Apply voltage by the second cholesteric crystal layer of transparent electrode pair 4 on first substrate 1 and second substrate 2, so that
It obtains the second cholesteric crystal layer 4 and is in the first state, at this point, the liquid crystal in the second cholesteric crystal layer 4 is along electric field
Direction arranges, and the left-handed rotation penetrated through first cholesteric crystal layer 3 can be penetrated from second cholesteric crystal layer 4, so
It is absorbed afterwards by the first absorbed layer 5, therefore, dark-state is presented in liquid crystal display panel.
The transparent electrode not to the selection reflecting layer apply voltage when, the selection reflecting layer be in second shape
State, the left-handed rotation penetrated through first cholesteric crystal layer 3 reflect in second cholesteric crystal layer 4, and to
First cholesteric crystal layer 3 is advanced, and is penetrated from first cholesteric crystal layer 3, and therefore, liquid crystal display panel presents bright
State.
The control schematic diagram of the illuminated state and dark-state of liquid crystal display panel is as shown in Figure 2 in the present embodiment.
Further, third substrate 7 is provided in first cholesteric crystal layer 4, the third substrate 7 is used for and institute
State the liquid crystal cell that second substrate 2 forms box accommodating first cholesteric crystal layer 3.
First cholesteric crystal layer 3 can be solid-state, or the liquid crystal state of fluid, when first cholesteric phase
When liquid crystal layer 3 is liquid crystal state, first cholesteric crystal layer 3 fixes unstable, easy leakage only by the second substrate 2
It loses, in order to solve the problems, such as this, third substrate 7 is set, third substrate 7, which is formed box with the second substrate 2, to be held in the present embodiment
Set the liquid crystal cell of first cholesteric crystal layer 3 with fixation first cholesteric crystal layer 3, as shown in Figure 3.
In another embodiment, as shown in figure 4, the selection absorbed layer includes：
The phase retardation plate 8 being set between first cholesteric crystal layer 3 and the second substrate 2；
The host and guest's property liquid crystal layer 10 being set between the first substrate 1 and second substrate 2, host and guest's property liquid crystal layer 10
The light emitted through the phase retardation plate 8 can be penetrated in a third condition, can be reflected through the phase under the 4th state
The light that retardation plate 8 emits.
Further, first part's light is left-handed rotation, and the second part light is right-handed rotation, the phase retardation plate
8 be quarter-wave plate, and first part's light can be become line polarisation by the phase retardation plate 8.
Further, transparent electrode, the first substrate 1 are both provided on the first substrate 1 and the second substrate 2
The second absorbed layer 9 is equipped between host and guest's property liquid crystal layer 10,
Under the third state, the transparent electrode applies voltage to host and guest's property liquid crystal layer 10, and described second inhales
Receive the absorbable light penetrated from host and guest's property liquid crystal layer 10 of layer 9；
Under the 4th state, the transparent electrode does not apply voltage to host and guest's property liquid crystal layer 10, and the line is inclined
Light reflects through host and guest's property liquid crystal layer 10, becomes left-handed rotation through the phase retardation plate 8 and then penetrate first cholesteric phase
Liquid crystal 3.
Voltage is applied to host and guest's property liquid crystal layer 10 by the transparent electrode on first substrate 1 and second substrate 2, so that host and guest
Property liquid crystal layer 10 is in the third state, in a third condition, liquid crystal in host and guest's property liquid crystal layer 10 along electric field direction
Arrangement, becomes line polarisation by the left-handed rotation of the first cholesteric crystal layer 3 after the phase retardation plate 8, which can be from
It penetrates in host and guest's property liquid crystal layer 10, is then absorbed by the second absorbed layer 9, therefore, dark-state is presented in liquid crystal display panel.
Transparent electrode on first substrate 1 and second substrate 2 does not apply voltage to host and guest's property liquid crystal layer 10, at this point, host and guest
Property liquid crystal layer 10 is in the 4th state, under the 4th state, by the left-handed rotation of the first cholesteric crystal layer 3 through the phase
Become line polarisation after retardation plates 8, which reflects through host and guest's property liquid crystal layer 10, then returnes to phase retardation plate 8
Become left-handed rotation, which can pass through first cholesteric crystal layer 3, and therefore, illuminated state is presented in liquid crystal display panel.
In another embodiment, illuminated state is presented in liquid crystal display panel and the control schematic diagram of dark-state is as shown in Figure 5.
Preferably, the axis of orientation of first cholesteric crystal layer 3 and the angle of the phase retardation plate 8 are -45 degree, institute
It is 45 degree to state phase retardation plate 8 and the angle of the axis of orientation of host and guest's property liquid crystal layer 10.
It should be noted that the angle of the axis of orientation of first cholesteric crystal layer 3 and the phase retardation plate 8 is in reality
There can be error in the operation of border, in practical operation, the angle of the angle can be between 40 degree~50 degree；Phase retardation plate 8 with
The angle of the axis of orientation of host and guest's property liquid crystal layer 10 can equally have error in practical operation, in practical operation, the angle of the angle
Degree can be between 40 degree~50 degree.
In the present embodiment, host and guest's property liquid crystal layer 10 is made of nematic liquid crystal and dichroic dye.
It should be noted that the transparent electrode pair in the transparent electrode and the second substrate 2 of first substrate 1 described above
Host and guest's property liquid crystal layer 10 applies voltage, forms vertical electric field, and the liquid crystal in host and guest's property liquid crystal layer 10 is arranged along the direction of electric field
Row, so by that can be penetrated after the later line polarisation of phase retardation plate 8 to host and guest's property liquid crystal layer 10, in the second absorbed layer 9
It is absorbed, therefore shows dark-state.
As long as realizing by that can be penetrated after the later line polarisation to host and guest's property liquid crystal layer 10 of phase retardation plate 8, to guest
Main property liquid crystal layer 10 applies voltage, formed horizontal component of electric field also can, at this point, the first substrate 1 or second substrate 2 are equipped with and are formed
Two transparent electrodes of horizontal component of electric field.The liquid crystal in host and guest's property liquid crystal layer 10 uses nematic phase negative liquid crystal at this time.
Optionally, on another side opposite with the one side that first cholesteric crystal layer 3 is arranged on the second substrate 2
Equipped with color film 6.
In the embodiment of the present invention, the cooperation of the first cholesteric crystal layer 3 and selection reflecting layer is implemented without polaroid
Mirror display is greatly improved the effective percentage of light.
The present invention also provides a kind of display devices, including above-mentioned liquid crystal display panel.
It is present pre-ferred embodiments above, it should be noted that those skilled in the art, do not taking off
Under the premise of from principle of the present invention, it can also make several improvements and retouch, these improvements and modifications also should be regarded as this hair
Bright protection domain.
Claims (11)
1. a kind of liquid crystal display panel, including the first substrate and second substrate that are oppositely arranged, which is characterized in that
Side of the second substrate far from the first substrate is equipped with the first cholesteric crystal layer, optionally penetrates outside
The second part light in first part's light and reflection extraneous light in light；
It is provided with selection reflecting layer between first cholesteric crystal layer and the first substrate, reflecting layer is selected to be used for the
First part's light is penetrated under one state, reflects first part's light in the second condition.
2. liquid crystal display panel according to claim 1, which is characterized in that the selection reflecting layer includes being set to described first
The second cholesteric crystal layer between substrate and the second substrate.
3. liquid crystal display panel according to claim 2, which is characterized in that be all provided on the first substrate and the second substrate
It is equipped with transparent electrode, the first absorbed layer is equipped between the first substrate and the selection reflecting layer,
The transparent electrode to the selection reflecting layer apply voltage when, the selection reflecting layer be in the first state, institute
State the absorbable first part's light penetrated from the selection reflecting layer of the first absorbed layer；
The transparent electrode not to the selection reflecting layer apply voltage when, the selection reflecting layer be in second state,
First part's light through the selection reflecting layer reflect after, through first cholesteric crystal layer.
4. liquid crystal display panel according to claim 1, which is characterized in that first part's light be left-handed rotation, described second
Part light is right-handed rotation.
5. liquid crystal display panel according to claim 1, which is characterized in that be provided with third in first cholesteric crystal layer
Substrate, the third substrate are used to form box with the second substrate liquid crystal cell of accommodating first cholesteric crystal layer.
6. liquid crystal display panel according to claim 1, which is characterized in that the selection reflecting layer includes：
The phase retardation plate being set between first cholesteric crystal layer and the second substrate；
The host and guest's property liquid crystal layer being set between the first substrate and second substrate, host and guest's property liquid crystal layer is in the third state
It can penetrate the light that emits through the phase retardation plate down, can reflect under the 4th state and emit through the phase retardation plate
Light.
7. liquid crystal display panel according to claim 6, which is characterized in that first part's light be left-handed rotation, described second
Part light is right-handed rotation, and the phase retardation plate is quarter-wave plate, and the phase retardation plate can be by the first part
Light becomes line polarisation.
8. liquid crystal display panel according to claim 7, which is characterized in that on the first substrate and/or the second substrate
It is provided with transparent electrode, the second absorbed layer is equipped between the first substrate and host and guest's property liquid crystal layer,
Under the third state, the transparent electrode applies voltage to host and guest's property liquid crystal layer, and second absorbed layer can
Absorb the light penetrated from host and guest's property liquid crystal layer；
Under the 4th state, the transparent electrode does not apply voltage to host and guest's property liquid crystal layer, and the line polarisation is through institute
The reflection of host and guest's property liquid crystal layer is stated, become left-handed rotation through the phase retardation plate and then penetrates first cholesteric liquid crystal.
9. liquid crystal display panel according to claim 6, which is characterized in that the axis of orientation of first cholesteric crystal layer and institute
The angle for stating phase retardation plate is -45 degree, and the phase retardation plate and the angle of the axis of orientation of host and guest's property liquid crystal layer are 45
Degree.
10. liquid crystal display panel according to claim 1, which is characterized in that on the second substrate with first courage is set
The another side that the one side of steroid phase liquid crystal layer is opposite is equipped with color film.
11. a kind of display device, which is characterized in that including claim 1-10 any one of them liquid crystal display panels.
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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 CN104749811A (en) | 2015-07-01 |
| CN104749811B true CN104749811B (en) | 2018-09-21 |
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| CN110764307B (en) * | 2019-11-28 | 2022-02-15 | 京东方科技集团股份有限公司 | Liquid crystal display panel and liquid crystal display device |
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| EP1058147A2 (en) * | 1999-06-04 | 2000-12-06 | Eastman Kodak Company | Multi-layer dual-polarity light modulating sheet |
| CN1886679A (en) * | 2003-11-24 | 2006-12-27 | 皇家飞利浦电子股份有限公司 | Mirror with built-in display |
| CN101750784A (en) * | 2008-11-28 | 2010-06-23 | 财团法人工业技术研究院 | Liquid crystal display and manufacture method thereof |
| CN102759823A (en) * | 2012-07-20 | 2012-10-31 | 京东方科技集团股份有限公司 | LCD device |
| CN203376536U (en) * | 2013-08-14 | 2014-01-01 | 京东方科技集团股份有限公司 | Display device |
| CN103913912A (en) * | 2014-03-31 | 2014-07-09 | 京东方科技集团股份有限公司 | Display panel and display control method thereof |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1058147A2 (en) * | 1999-06-04 | 2000-12-06 | Eastman Kodak Company | Multi-layer dual-polarity light modulating sheet |
| CN1886679A (en) * | 2003-11-24 | 2006-12-27 | 皇家飞利浦电子股份有限公司 | Mirror with built-in display |
| CN101750784A (en) * | 2008-11-28 | 2010-06-23 | 财团法人工业技术研究院 | Liquid crystal display and manufacture method thereof |
| CN102759823A (en) * | 2012-07-20 | 2012-10-31 | 京东方科技集团股份有限公司 | LCD device |
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