CN203241665U - Phase difference plate and display device - Google Patents
Phase difference plate and display device Download PDFInfo
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- CN203241665U CN203241665U CN2013203046436U CN201320304643U CN203241665U CN 203241665 U CN203241665 U CN 203241665U CN 2013203046436 U CN2013203046436 U CN 2013203046436U CN 201320304643 U CN201320304643 U CN 201320304643U CN 203241665 U CN203241665 U CN 203241665U
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Abstract
The utility model relates to the technology of displays, and discloses a phase difference plate and a display device, wherein the phase difference plate comprises a plurality of constant width strip areas which are formed on a base plate, the strip areas are made from liquid crystal optical orientation materials, the strip areas with horizontal orientation liquid crystal molecules in the liquid crystal optical orientation materials and the strip areas with vertical orientation liquid crystal molecules in the liquid crystal optical orientation materials are arranged in a staggered mode, horizontal orientation is the direction which is parallel to the base plate, and the vertical orientation is the direction which is vertical to the base plate. The strip areas with horizontal orientation or vertical orientation liquid crystal molecules which are arranged in the staggered mode and are equal in width are formed on the base plate, and the strip areas are made from the liquid crystal optical orientation materials, and can reduce formation technology difficulty of phase difference in a display panel.
Description
Technical field
The utility model relates to the display technology field, particularly relates to a kind of polarizer and display device.
Background technology
As everyone knows, we at ordinary times seen 2D display can't as real world, provide depth of view information for us.Why we can distinguish the depth of field (3D effect), and key is that two eyes of people have the position difference that the interpupillary distance about 60mm produces.Have the two secondary figure of " binocular parallax " to become a pair of " stereopair ", it has just produced stereoeffect through the fusion of people's brain visual cortex.The 3D demonstration is divided into bore hole formula and spectacle, and the technology of spectacle main flow has aberration formula, shutter (shutter glass) technology and pattern to postpone (pattern retard) technology.
And the stereo display of polaroid glasses formula belongs to above-mentioned pattern delay technology, is a kind of mainstream technology in current stereo display field, and the basic structure of this technology is exactly that the device that can regulate the emergent light polarization direction is installed before display panel.This device can be a polarizer, also can be a liquid crystal cell, and perhaps other can regulate the device of different pixels emergent light polarization direction.Wherein, the principle of polarizer stereo display as shown in Figure 1.On the display panel, delegation shows right eye figure, delegation shows left eye figure, places a polarizer in his front, and the λ of delegation/4 postpone, delegation-λ/4 postpone, such polarizer λ/4 ,-λ/4 postpone alternately to produce left and right sides circularly polarized light, the left and right sides circularly polarized light glasses of putting on corresponding rotation direction can produce stereoeffect, as shown in Figure 1.So just can make right eye only see the formed eye image of light that the right eye pixel is sent, left eye is only seen the formed left-eye image of light that the left eye pixel is sent, thereby these two kinds of image stacks produce the stereoeffect in the perception in human brain.
The light-dividing principle of polarizer, make from the line polarisation of liquid crystal panel (Panel) outgoing become respectively with major axis or the minor axis of quarter wave plate+45 ° and-the 45° angle degree, transfer respectively left light and right-hand circularly polarized light to thereby the line polarisation turned.
Utilize the light orientation technology realize different farmlands to quarter wave plate, the manufacturing process of present liquid crystal polarizer as shown in Figure 2, under mask plate, expose, adopt the UV linearly polarized light exposure of different polarization direction to induce to zones of different and form different liquid crystal molecule director orientation.
Said method need adopt special photosensitivity monomer and liquid crystal material, need in addition ultraviolet light (UV) exposure sources must produce linear polarization UV light, must realize that liquid crystal solidifies along the light orientation of different directions by changing linear polarization UV polarisation of light direction, its technology difficulty is larger, and what carry out all is the planar orientation parallel with substrate surface that liquid crystal molecule is carried out.Conventional LCD UV exposure sources can't satisfy the condition of above-mentioned liquid crystal molecule light orientation, has therefore increased cost of manufacture.
The utility model content
The technical matters that (one) will solve
The technical problems to be solved in the utility model is how to reduce the technology difficulty that forms phase differential in the display panel.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of polarizer, it comprises a plurality of wide strip region that is formed on the substrate, described strip region is made by the liquid crystal light control oriented material, in a plurality of described strip regions, wherein the liquid crystal molecule in the liquid crystal light control oriented material be the strip region of horizontal alignment and wherein the liquid crystal molecule in the liquid crystal light control oriented material be that the strip region that is vertically oriented is staggered, described horizontal alignment is the direction parallel with described substrate, and described being vertically oriented is the direction vertical with described substrate.
Further, described substrate is color membrane substrates, and each described strip region equates with the width of a sub-pixel of described color membrane substrates along the width on the staggered direction.
The utility model also provides a kind of display device, and it comprises above-mentioned polarizer.
(3) beneficial effect
A kind of polarizer and display device that technique scheme provides, being horizontal alignment at substrate formation liquid crystal molecule is staggered and wide a plurality of strip regions with being vertically oriented, and this strip region is made by the liquid crystal light control oriented material, make it have different orientations, can reduce the technology difficulty that forms phase differential in the display panel.
Description of drawings
Fig. 1 is the schematic diagram of polarizer stereo display;
Fig. 2 is conventional light orientation process preparation technology schematic flow sheet;
Fig. 3 is the structural representation of the utility model polarizer;
Fig. 4 is that the Cis-trans structures of azobenzene liquid crystal material changes schematic diagram;
Fig. 5 is that azobenzene liquid crystal material liquid crystal molecular orientation changes schematic diagram;
Fig. 6 is that the strip region that the utility model is vertically oriented forms schematic diagram;
Fig. 7 is that the strip region of the utility model horizontal alignment forms schematic diagram.
Wherein, 10, color membrane substrates; 11, chromatic filter layer; 111, sub-pixel; 12, underlay substrate; 20, polarizer; A, the strip region that is vertically oriented; The strip region of B, horizontal alignment; 30, upper polarizer; 40, mask plate.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
Embodiment one
As shown in Figure 3, a kind of polarizer of the utility model embodiment, this polarizer 20 comprises a plurality of wide strip region that is formed on the substrate, strip region is made by the liquid crystal light control oriented material, in a plurality of strip regions, wherein the liquid crystal molecule in the liquid crystal light control oriented material be the strip region of horizontal alignment and wherein the liquid crystal molecule in the liquid crystal light control oriented material be that the strip region that is vertically oriented is staggered, horizontal alignment is the direction parallel with substrate, is vertically oriented to be the direction vertical with substrate.Among Fig. 3, A is the strip region that is vertically oriented, and B is the strip region of horizontal alignment.
Preferably, above-mentioned substrate is color membrane substrates 10, on staggered direction, the width of each strip region equates with the width of a sub-pixel 111 of color membrane substrates 10, and with the direction of staggered perpendicular direction on, the length of each strip region can be the integral multiple of the length of a sub-pixel.A sub-pixel of color membrane substrates refers to a kind of colored pixels, and take the RGB color membrane substrates as example, the red, green, blue pixel is respectively a sub-pixel.
The liquid crystal light control oriented material that strip region of the present utility model adopts is mainly mixed by azo-like liquid crystal material, photopolymerizable monomer, ultraviolet initiator and visible light initiator.
Wherein:
The azobenzene liquid crystal material mainly is to contain azobenzene functional group for realizing the main body core material of polarizer, can carry out at different-waveband the organism of light orientation, and it can be along with different wave band molecule generation different orientations; This azo-like liquid crystal material can be one or more in polyacrylate side chain azobenzene liquid crystal, polyurethane-type side chain azobenzene liquid crystal, polystyrene type side chain azobenzene liquid crystal, carbene type side chain azobenzene liquid crystal, polysilane type side chain azobenzene liquid crystal, polyester-type side chain azobenzene liquid crystal, polyether-type side chain azobenzene liquid crystal, the polyimide type side chain azobenzene liquid crystal;
Photopolymerizable monomer can be carried out photopolymerisable compound for containing active function groups, is mainly the esters of acrylic acid material, and its effect is that the liquid crystal that certain orientation is orientated is cured; This photopolymerizable monomer can be one or more in BDO acrylate, isobornyl acrylate, 1,6 hexanediyl ester, the polyethyleneglycol diacrylate;
The effect of visible light initiator is to impel photopolymerizable monomer to carry out polymerization at visible light wave range; This visible light initiator can be in luxuriant one or more of fluorinated diphenyl titanium luxuriant, two (pentafluorophenyl group) titanium;
The effect of ultraviolet initiator is by absorbing the photoemissive ultraviolet quantum of strong uviol lamp, thereby initiated polymerization is crosslinked and graft reaction; This ultraviolet initiator can be one or more among 2-hydroxy-2-methyl-1-phenyl-1-acetone (being called for short UV1173), styrax diethyl ether (being called for short UV651), 1-hydroxy-cyclohexyl phenyl ketone (being called for short UV184), 2-methyl isophthalic acid-(4-methyl mercapto) phenyl-2-morpholinyl-1-acetone (being called for short UV907), 2-phenyl benzyl-2-dimethyl amine-4-morpholino butyrophenone (being called for short UV369), UV1490, the UV1700.
The quality of the composite material of visible light light trigger and ultraviolet initiator accounts for 1%～20% of photopolymerizable monomer quality of materials in mixture layer, is preferably 5%～10%; The abundant reaction of the material that provides in the potpourri more is provided preferred situation, avoids mixing the material of each component of species not enough or residue is arranged, thereby reaches the better display effect of use material production still less.
In mixture layer the quality of photopolymerizable monomer material account for photopolymerizable monomer and azobenzene liquid crystal the composite material quality 1%～40%, be preferably 10%～30%.In like manner, the abundant reaction of the material that provides in the potpourri more is provided preferred situation, avoids mixing the material of each component of species not enough or residue is arranged, thereby reaches the better display effect of use material production still less.
Cis-trans isomerism claims again rotamerism, in the molecule because two key (〉 C=C＜..., C=N-,-N=N-) or the ring the reasons such as existence, the rotation of key is hindered, cause that atom (or atomic group) produces two kinds of different space arrangement modes, this spatial isomerism is called cis-trans isomerism.The used special liquid crystal material of the utility model is the azobenzene liquid crystal material, and (N=N-), the azo group two ends are connected to the organic pigment of aromatic hydrocarbons, and this material has and has the cis-trans isomerism characteristic to contain azo group in its chemical constitution.Should be noted, this material is under the light irradiation of different-waveband, and have different orientations: under the UV-irradiation of specific wavelength, the azobenzene of transconfiguration can change cis-configuration into; Under the visible light effect, cis-configuration can be returned to transconfiguration, and as shown in Figure 4, correspondingly, the liquid crystal molecule in the azobenzene liquid crystal material is respectively under the effect of ultraviolet light or visible light and is vertically oriented or horizontal alignment, as shown in Figure 5.
λ/Δ the n of the thickness d of strip region=(m+1/2), wherein, m is integer, and λ is the incident light wavelength, and Δ n is the birefraction of azo-like liquid crystal material.
The optical path difference of the strip region that is vertically oriented is without delay, and the optical path difference of the strip region of horizontal alignment is (m+1/2) λ, and wherein, m is nonnegative integer, and λ is the incident light wavelength.
The utility model forms liquid crystal molecule at substrate and is horizontal alignment or is vertically oriented and be staggered and wide a plurality of strip regions, and strip region made by the liquid crystal light control oriented material, can reduce the technology difficulty that forms phase differential in the display panel; And strip region adopts the composite material of special liquid crystal material-azo-like liquid crystal material, photopolymerizable monomer, ultraviolet initiator and visible light initiator, under the light radiation of different-waveband, make it have different orientations, thereby utilize mask plate to form different orientation area, finish the making of polarizer.The upper polarizer of existing display panel generally is located on the color membrane substrates, and adopt the display panel of this polarizer, upper polarizer 30 can external, also can be built-in, or integrated as one deck with polarizer, can be located at any one deck of liquid crystal layer and color membrane substrates, be illustrated in figure 3 as upper polarizer built-in, be located between the underlay substrate 12 and colored filter 11 on the color membrane substrates 10.
Embodiment two
The present embodiment is a kind of display device, comprises the polarizer described in the embodiment one.Display device with this polarizer 20 can produce spectacle 3D display effect, and its stereoscopic sensation is stronger.
Embodiment three
As shown in Figure 6 and Figure 7, the present embodiment is the method for making of the polarizer 20 described in the embodiment one, and it may further comprise the steps:
S1, form the liquid crystal light control oriented layer at substrate; Particularly, can adopt the mode that applies or spray to be coated with one deck liquid crystal light control oriented material at substrate, for the strip region that next step forms is prepared;
S2, the liquid crystal light control oriented layer is double exposed, forming wide a plurality of strip regions so that wherein the strip region that is oriented to horizontal alignment of liquid crystal molecule and wherein the strip region that is vertically oriented that is oriented to of liquid crystal molecule be staggered; Wherein, horizontal alignment is the direction parallel with substrate, is vertically oriented to be the direction vertical with substrate.
Preferably, aforesaid substrate is color membrane substrates, and on staggered direction, the width of each transmission region or lightproof area all equates with the width of a sub-pixel of color membrane substrates.
Preferably, the material of liquid crystal light control oriented layer is mixed by azo-like liquid crystal material, photopolymerizable monomer, ultraviolet initiator and visible light initiator.Among the step S1, be in particular, azo-like liquid crystal material, photopolymerizable monomer, ultraviolet initiator, visible light initiator material are mixed, evenly be coated to according to the coating thickness of setting and form the liquid crystal light control oriented layer on the color membrane substrates.
Among the step S2 of the present embodiment re-expose is carried out in liquid crystal light control oriented layer subregion, in Fig. 6 and Fig. 7, the strip region that is vertically oriented is made as the A district, and the strip region of horizontal alignment is made as the B district.
Particularly, the step S2 of the present embodiment may further comprise the steps:
S10, as shown in Figure 6 adopts transmission region and the staggered mask plate of lightproof area to place the top of liquid crystal light control oriented layer;
S20, first that lightproof area is relative with the B zone, so that the A district exposes, adopt ultraviolet light by the transmission region of mask plate the liquid crystal light control oriented layer to be exposed, form the strip region A that is vertically oriented so that the liquid crystal molecule of azo-like liquid crystal material is vertical and color membrane substrates is orientated; At this moment, ultraviolet initiator is excited, and can absorb the energy of ultraviolet wavelength, produces free radical, kation etc., carry out polymerization crosslinking at the ultraviolet light wave band and solidify thereby cause photopolymerizable monomer, and then the fixing vertical orientated state of the liquid crystal molecule of azo-like liquid crystal material;
S30, as shown in Figure 7 moves mask plate the distance of a sub-pixel, so that transmission region and the exchange of lightproof area position, at this moment, A is blocked by lightproof area in district, the exposure of B district;
S40, adopt visible light by the transmission region of mask plate the liquid crystal light control oriented layer to be exposed, the visible light of this wave band is to the liquid crystal molecule horizontal alignment of azo liquid crystal material, thereby forms parallel-oriented strip region B; At this moment, visible light initiator is excited, and can absorb the energy of this visible wavelength, produces free radical, kation etc., carry out polymerization crosslinking at visible light wave range and solidify thereby cause photopolymerizable monomer, and then the fixing horizontal alignment state of the liquid crystal molecule of azo-like liquid crystal material.
The formation order of above-mentioned step S20 and step S40 can be exchanged.
An above-mentioned strip region is corresponding with the sub-pixel of a color membrane substrates.
The condition of the light of the present embodiment orientation is: can under the room temperature about 25 degrees centigrade, polymerization get final product, and the photopolymerization speed, time shutter 0.1-15 minute, preferably 3-10 minute, so that the abundant polymerization of polymkeric substance and guarantee economic timeliness; More than the light intensity 10mw, light intensity is stronger, and polymerization speed is faster.
The method for making of above-mentioned polarizer should satisfy following some:
The optical path difference of the strip region that 1, is vertically oriented is without delay, and the optical path difference of the strip region of horizontal alignment is (m+1/2) λ, and wherein, m is nonnegative integer, and λ is the incident light wavelength;
2, the λ/Δ n of the thickness d of strip region=(m+1/2), wherein, m is nonnegative integer, and λ is the incident light wavelength, and Δ n is the birefraction of described azo-like liquid crystal material;
This polarizer is in the use procedure of display device, for two lightlike lines (light of namely telling from horizontal zone and vertically regional strip region) the polarization direction quadrature that guarantees to tell in the display panel, need point to the liquid crystal molecule of B district horizontal alignment the arrow angle from the line polarisation polarization direction of display panel outgoing be 45 degree.
Embodiment four
The difference of the method for making of the polarizer of the present embodiment four and embodiment three only is, among the step S1: at first form a plurality of wide zones at substrate, mode by inkjet printing, inject alternately different liquid crystal light control oriented materials in a plurality of zones on substrate, formation has the liquid crystal light control oriented layer in a plurality of wide zones, wherein a kind of is can be by the liquid crystal light control oriented material of visible-light curing, and another kind is can be by the liquid crystal light control oriented material of ultraviolet light polymerization.
In step S2, adopt respectively visible light and ultraviolet light that above-mentioned liquid crystal light control oriented material layer with a plurality of wide zones is carried out exposure irradiation, particularly, visible light exposes to the zone of liquid crystal light control oriented material with visible-light curing, ultraviolet light exposes to the zone of liquid crystal light control material with ultraviolet light polymerization, so that the material of zones of different solidifies respectively, thereby form the different strip region of liquid crystal molecular orientation, form parallel-oriented strip region in the exposure area of visible light, form the strip region that is vertically oriented in the exposure area of ultraviolet light.
Preferably, can mainly be to be mixed by azo-like liquid crystal material, photopolymerizable monomer and visible light initiator by the liquid crystal light control oriented material of visible-light curing.
Preferably, the liquid crystal light control oriented material by ultraviolet light polymerization mainly is to be mixed by azo-like liquid crystal material, photopolymerizable monomer and ultraviolet initiator.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (3)
1. polarizer, it is characterized in that, comprise a plurality of wide strip region that is formed on the substrate, described strip region is made by the liquid crystal light control oriented material, in a plurality of described strip regions, wherein the liquid crystal molecule in the liquid crystal light control oriented material be the strip region of horizontal alignment and wherein the liquid crystal molecule in the liquid crystal light control oriented material be that the strip region that is vertically oriented is staggered, described horizontal alignment is the direction parallel with described substrate, and described being vertically oriented is the direction vertical with described substrate.
2. polarizer as claimed in claim 1 is characterized in that, described substrate is color membrane substrates, and each described strip region equates with the width of a sub-pixel of described color membrane substrates along the width on the staggered direction.
3. a display device is characterized in that, comprises polarizer as claimed in claim 1 or 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203046436U CN203241665U (en) | 2013-05-30 | 2013-05-30 | Phase difference plate and display device |
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| CN2013203046436U CN203241665U (en) | 2013-05-30 | 2013-05-30 | Phase difference plate and display device |
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| CN203241665U true CN203241665U (en) | 2013-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293585A (en) * | 2013-05-30 | 2013-09-11 | 京东方科技集团股份有限公司 | Phase difference board, display device and method for producing phase difference board |
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- 2013-05-30 CN CN2013203046436U patent/CN203241665U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293585A (en) * | 2013-05-30 | 2013-09-11 | 京东方科技集团股份有限公司 | Phase difference board, display device and method for producing phase difference board |
| WO2014190724A1 (en) * | 2013-05-30 | 2014-12-04 | 京东方科技集团股份有限公司 | Phase difference plate and manufacturing method thereof, and display device |
| CN103293585B (en) * | 2013-05-30 | 2015-11-25 | 京东方科技集团股份有限公司 | Polarizer, display device and polarizer method for making |
| US9995943B2 (en) | 2013-05-30 | 2018-06-12 | Boe Technology Group Co., Ltd. | Phase difference plate and manufacturing method thereof, display device |
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Granted publication date: 20131016 |