CN1815324A - Optical compensating film, optical compensating polarized light plate and liquid crystal display device - Google Patents
Optical compensating film, optical compensating polarized light plate and liquid crystal display device Download PDFInfo
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- CN1815324A CN1815324A CN 200510005987 CN200510005987A CN1815324A CN 1815324 A CN1815324 A CN 1815324A CN 200510005987 CN200510005987 CN 200510005987 CN 200510005987 A CN200510005987 A CN 200510005987A CN 1815324 A CN1815324 A CN 1815324A
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Abstract
Being assorted to a polarized light module and a polarized light plate with at least one protective layer, the optical compensation film forms an optical compensated polarized light plate. The protective layer is setup on surface of the polarized light module. Each protective layer represents delay in same plane not larger than 10 nano, and delay in direction of thickness not larger than 10 nano. Optical compensation films are pressed on at least one surface of the polarized light plate in order to make slow axis of each optical compensation film cross vertically over absorption axis of the polarized light plate. Number of range of optical compensation film is in 2-8, representing delay in same plane in 10-190 nano. Using optical compensation film, the invention develops polarized light plate capable of increasing visual angle of liquid crystal display unit, and high contrast ratio.
Description
Technical field
Even the present invention about a kind of when a blooming of also watching when changing hardly axial translation that can the genetic horizon compound, it can form the good liquid crystal indicator of display quality, thereby can obtain LCD or its analog of broad viewing angle and high contrast ratio.
Background technology
In the polarisation assembly that is provided with intersection Ni Keer (Crossed-Nicol) kenel, even it can when the position angle being changed into inclination, the problem of leakage of light can take place with in the normal situation about cutting off of light positive in normal (forward) direction.This makes and is intersecting the relation of Nicol optical axis between the polarisation assembly by displacement or destruction because of the change of the angle that is caused by the oblique view angle.About in the known technology in order in the device that solves the leakage of light problem that causes by this kind position angle; known have a kind of setting to represent to have from 0.1 to 0.9Nz with birefringent compensate film from 190 to 320nm delayed-action (retardation); Nz=(nx-nz)/(nx-ny) wherein; and nz is the refractive index of the direction of the Z axle of the thickness direction of expression optical compensation films; nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of the optical compensation films of the thin plate of Z axle; ny is the refractive index that is illustrated in perpendicular to the direction of the Y-axis of the direction of the optical compensation films of Z axle and X-axis, with the slow axis polariscope vertical with the absorption axes of polarisation assembly that causes protective film.
Known have a kind of optical compensation polariscope and phase shift films to improve (Improvement ofPolarizer and Retardation Film for LCD), (show and image, 1993, the 1st volume, the 257th to 264 page).The following manufacturing of this optical compensation polariscope, iodine or to dye material similarly be that the dichromatism dyestuff is absorbed into polyvinyl alcohol film extends this film then.The protective seam of Triafol T (TAC) or analog is arranged on the opposed surface of film, thus the preparation polariscope.Therefore, prior art can provide the situation generation that a kind of optical compensation polariscope leaks to prevent light.Yet the optical compensation polariscope of prior art has the problem of the light variable color that transmits by the optical compensation polariscope, the i.e. problem of wavelength dispersion.
In other words, generally wavelength dispersion can take place, the phenomenon that its delayed-action changes according to wavelength in retardation films.Therefore, retardation films is only effective to the light with specific wavelength as the function of half-wave plate (half-wave plate).For the light with other wavelength, retardation films can't consequently have the linear polarized light property variation of the light of other wavelength exactly as half-wave plate.Therefore can produce the quality problem.By way of parenthesis, when feature optimization with retardation films, peakedly have the light time of approaching the 550nm wavelength to compensate to represent in luminescence efficiency, light with other wavelength is for blue, therefore, when retardation films being applied to liquid crystal indicator or its analog, the quality problem itself become property deterioration in characteristics problem among the display.
Yet the shortcoming that LCD exists at present is its narrow viewing angle and serious color offset phenomenon.At this problem, the researchist had been developed several different display modes in recent years and had been improved narrow angle of watching.One of them is multizone homeotropic alignment (MVA; Multi-domain Vertical Alignment)) thin film transistor-liquid crystal display (TFT LCD; ThinFilm Transistor Liquid Crystal Display) be a kind of notion of new homeotropic alignment, they provide a wide visual angle in visual aspects, the fast-response time of the high contrast in Show Color aspect, high color saturation and demonstration aspect.
Below three kinds of rough LCD systems are introduced in the prior art that will mention with regard to the document " Super High Quality MVA TFT Liquid Crystal Display " of Mr.Yoshio Koike and Dr.Kenji Okamoto institute book.See also shown in Figure 1A, Figure 1B and Fig. 1 C, three kinds of single crystal grain of known LCD are arranged synoptic diagram, TN (the Twisted Nematic of these three kinds of LCD shown in Figure 1A; Stable twisted nematic) LCD of system, the IPS (In-plane-switching shown in Figure 1B; Face internal conversion type) LCD of system and (the Vertically Aligned of the VA shown in Fig. 1 C; Vertically aligned) LCD of system, however all be according to different principle of operation.In traditional stable twisted nematic, when not switching on, i.e. the accompanying drawing on Figure 1A dotted line left side, the arrangement of LC crystal grain is on identical plane with preceding base material and back base material almost.Yet, when a plurality of bar-like grains are arranged, present mutual inclination between two base materials, and the angle that it tilts gradually presents 90 ° dip deviation during from last base material to following base material altogether.When not having electric field to pass through, the Polarizer that light can be by last base material, the Polarizer of the crystal grain layer between base material and following base material up and down are so that light presents on display is white.When electric field passed through, the crystal grain arrangement architecture of the distortion of tilting was destroyed, and it is almost vertical to base material that crystal grain becomes, the polar biased light that enters is not rotated now and just passes through crystal grain layer, promptly because of not rotation, light can be blocked during again by the Polarizer behind the base material down, so produce black on display.In TNLCD, even execute thereon when whole voltage, graphic as Figure 1A dotted line the right, LC crystal grain is also not exclusively vertical.Therefore, when dark state, black is black inadequately, promptly has light leakage phenomena to produce.And when imposing a medium voltage, LC crystal grain can produce different videos from different angles in polynary polarization is arranged.That is to say, can distortion when the angle of observer beyond from the front observed.
Shown in Figure 1B, in the IPS system, the arrangement of crystal grain and base material are on one side, and the angle of its inclination or rotation decide on the voltage of bestowing, and be like this, also solved because of the arrangement of multipolarization crystal grain the narrow problem in the visual angle that derives.Similarly, Figure 1B dotted line the right "on" position, the dotted line left side is "on" position not.But, in IPS, exist some inevitable wavelength to be studded with, so transmission is also different because of different colors.That is to say have some colors can be different and different with the voltage that imposes because of the visual angle.In addition, the reaction of this system is very slow, because LC crystal grain is rotation between two quite weak substrate surfaces of an electric field, this electric field is that the electrode by a pair of precision dieization is formed.Big between this two electrode every between two base materials, separating, so can try to achieve the reaction velocity of known LCD.
Shown in Fig. 1 C, the VA system is different from TN and IPS system.In the VA system, when not bestowing voltage, promptly Fig. 1 C dotted line left side is graphic, and LC crystal grain is arranged vertical with base material, produces a black image on LCD display.When working voltage, promptly Fig. 1 C dotted line the right is graphic, and crystal grain moves to the position of a level, produces the image of a width of cloth white.When not having voltage, all LC crystal grain, comprise those borderline at base material all be fully vertical.Under such state, the polar biased optical channel is can be not interrupted by the LC crystal grain layer between base material about this, but can be intercepted by front polarizer, because this is a kind of obstruct of completeness light, so the black that is produced is a kind of black and what seen by visual angle up and down all is deceiving of same degree.This system has the structure that reaction velocity does not fast but have distortion or tilts, and has the characteristic that LC crystal grain only changes between vertical and horizontal is adjusted.But, as TNLCD, the visual angle size of VA system only belongs to intermediate grade.
See also shown in Figure 2, the visual angle of the multizone homeotropic alignment LCD of the single area homeotropic alignment LCD of known technology and known technology and the comparison synoptic diagram of correlative value.When the single area homeotropic alignment LCD of the left figure of Fig. 2 was presented at the visual angle and is 0 °, correlative value was 50, and when the visual angle is 80 °, correlative value is 10; When the multizone homeotropic alignment LCD of right figure was presented at the visual angle and is 0 °, correlative value was 300, and when the visual angle is 80 °, correlative value is 10.And the Dark grey of right figure and grayish areal distribution are very average, are representing phasic difference very average, and on screen display, the shown colour-difference of different angles is apart from little.Review left figure, its Dark grey and grayish areal distribution are unequal in the extreme.
As mentioned above, in order to promote existing multizone homeotropic alignment LCD (MVA-LCD; Multi-domain Vertical Alignment Liquid Crystal Display) visual angle and contrast, Polarizer utilizes twin shaft extension Polarizer to carry out the phasic difference compensation mostly, its optical measurement result shows that contrast can promote effectively, and contrast (CR) is that 10 zone has the effect that extends to 80 ° of angle of visibilities.Yet, though existing optical compensation method can extend to the visual angle full visual angle, but contrast distribution still can't reach effective expansion, still can't effectively be promoted to contrast particularly in 45 ° of-225 ° of directions in visual angle and 135 ° of-315 ° of directions greater than 20, cause when direction is watched according to this, still have contrast relative deficiency situation and produce.Therefore, how developing a kind of mode of phasic difference compensation, to improve its contrast of above-mentioned two angulars field of view greater than 20, is the technology that the present invention discusses and discloses.
Summary of the invention
Fundamental purpose of the present invention is for providing a kind of optical compensation films, optical compensating polarized light plate and liquid crystal indicator, and it utilizes a kind of Polarizer that increases liquid crystal indicator visual angle and high contrast ratio of optical compensation films development.
For reaching above-mentioned purpose; the invention provides a kind of optical compensation films; wherein this optical compensation films can arrange in pairs or groups have a polarisation assembly and at least one protective clear layer a Polarizer to form an optical compensating polarized light plate; and this protective clear layer is arranged on the surface of this polarisation assembly; each this protective clear layer manifests isoplanar delay that is not more than 10 millimicrons and the thickness direction retardation that is not more than 10 millimicrons; and this optical compensation films is laminated at least one surface of this Polarizer; make the absorption axes of this Polarizer of leap that the slow axis of each optical compensation films is vertical; and this optical compensation films manifest that scope postpones 10 to 190 millimicrons isoplanar and scope 2 to 8; Nz=(nx-nz)/(nx-ny) wherein; this nz is the refractive index of the direction of the Z axle of the thickness direction of expression optical compensation films; nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of the optical compensation films of the thin plate of Z axle, and ny is the refractive index that is illustrated in perpendicular to the direction of the Y-axis of the direction of the optical compensation films of Z axle and X-axis.
According to the present invention, provide the relation and the specific separately optical property of the inter-module optical axis of the aforesaid Polarizer that comprises optical compensation films, such as the delay of protective seam and the delay of optical compensation films.So can obtain a kind of optical compensating polarized light plate, make to be suppressed, because optical compensating polarized light plate can be influenced by the wavelength dissipation hardly because of light leaks the variable color that is caused.When this kind optical compensating polarized light plate is arranged with the form of intersection Ni Keer, can suppress light in orientation and leak from the optic axis displacement, can obtain excellent neutral characteristics (colourless property).Use the Polarizer of this optical compensation films can form excellent display quality, such as liquid crystal indicator or its analog of the high contrast ratio under broad viewing angle.
Be familiar with this skill personage and understand purpose of the present invention, feature and effect for making, now by following specific embodiment, and accompanying drawing shown in cooperating, in detail explanation as after.
Description of drawings
Figure 1A is that the single crystal grain of the LCD of TN system is arranged synoptic diagram;
Figure 1B is that the single crystal grain of the LCD of IPS system is arranged synoptic diagram;
Fig. 1 C is that the single crystal grain of the LCD of VA system is arranged synoptic diagram;
Fig. 2 is the visual angle of multizone homeotropic alignment LCD of the single area homeotropic alignment LCD of known technology and known technology and the comparison synoptic diagram of correlative value;
Fig. 3 is the overall schematic of liquid crystal indicator first preferred embodiment of the present invention;
Fig. 4 is the last Polarizer and the optical compensation films synoptic diagram of the present invention's first preferred embodiment;
Fig. 5 is the following Polarizer and the liquid crystal cells synoptic diagram of the present invention's first preferred embodiment;
Fig. 6 is following Polarizer, liquid crystal cells and the optical compensation films synoptic diagram of the present invention's second preferred embodiment;
Fig. 7 is the synoptic diagram of the present invention's the 3rd preferred embodiment;
Fig. 8 is the synoptic diagram of the present invention's the 4th preferred embodiment.
Symbol description among the figure:
1 liquid crystal indicator
10 optical compensating polarized light plates
100 liquid crystal cells
Polarizer on 110
111 first polarisation assemblies
112 first protective seams
113 second protective seams
120 times Polarizers
121 second polarisation assemblies
122 the 3rd protective seams
123 the 4th protective seams
130 optical compensation films
140 adhesion layers
Embodiment
In Fig. 3, the overall schematic of liquid crystal indicator first preferred embodiment of the present invention.This liquid crystal indicator 1 includes Polarizer 110 on the liquid crystal cells 100,, once Polarizer 120, an optical compensation mould 130 and an adhesion layer 140.
The method of the use kind of this liquid crystal cells 100 and driving liquid crystal cells there is no special restriction, demand on the user is decided, and can use suitable liquid crystal cells 100 all if any TN liquid crystal cells, stn liquid crystal unit, vertical orientation (VA) liquid crystal cells, multi-zone vertical alignment nematic (MVA) liquid crystal cells, OCB liquid crystal cells or IPS liquid crystal cells.
Please cooperate consult shown in Figure 4, the last Polarizer synoptic diagram of the present invention's first preferred embodiment.Should go up Polarizer 110, one first protective seam 112 and one second protective seam 113 that include one first polarisation assembly 111 and fit in these 111 liang of surfaces of first polarisation assembly respectively.
Please cooperate consult shown in Figure 5, the following Polarizer synoptic diagram of the present invention's first preferred embodiment.This time Polarizer 120; one the 3rd protective seam 122 and one the 4th protective seam 123 that in present embodiment, include one second polarisation assembly 121 and fit in these 121 liang of surfaces of second polarisation assembly respectively, and the 4th protective seam 123 of this time Polarizer 120 fits on this liquid crystal cells 100.
Wherein this first polarisation assembly 111 and this second polarisation assembly 121 can use the suitable assembly of the linear transmission-polarizing light of energy, and not have any special restriction when using natural light to be incident on this first polarisation assembly 111 and this second polarisation assembly 121.The first preferable polarisation assembly 111 and this second polarisation assembly 121 can obtain this first polarisation assembly 111 and this second polarisation assembly 121 of the transmitted light of degree of polarization excellence because of good transmittance is arranged.Viewpoint thus, preferable use absorption-type polarisation assembly, when making natural light be incident on this first polarisation assembly 111 and this second polarisation assembly 121, it can linear transmission-polarizing light, absorbs other light simultaneously.Especially by handling character, absorb sexual type polarisation assembly and make preferable by polarizing film such as reducing thickness, flexible or the like viewpoint.Incidentally, this absorption-type polarisation assembly can be by the oriented layer structure that gets via the coating of liquid crystalline dichroic dye.Absorption-type polarisation assembly about being made by polarizing film also can use any suitable assembly.By the viewpoint that in the broad ripple scope of visible light, obtains linearly polarized photon or the like, can use by polymkeric substance such as vinyl alcohol or part formalizing polyvinyl alcohol (PVA) and make polyvinyl alcohol film, this film in utilize suitable system such as adsorption system under, soak iodine or dye such as orientation after azo dyes, anthraquinone dye, tetrazine dyestuff or the like and calibration.Especially, use the uniaxial orientation film preferable.And this first protective seam 112, this second protective seam 113, the 3rd protective seam 122 and the 4th protective seam 123 are postponed by the isoplanar that is not more than 10 millimicrons and the hyaline layer that is not more than 10 millimicrons thickness direction retardation is constituted.Can use any suitable transparent material for forming this first protective seam 112, this second protective seam 113, the 3rd protective seam 122 and the 4th protective seam 123 and do not have any special restriction, it can use the polymkeric substance of transparency excellence as transparent material usually, as can be the made or cholesterol liquid crystal layer of an organic material film and form, in addition, look from the viewpoint that suppresses to postpone to change because produce stress, the transparent material that the photoelasticity number is little is preferable, and the example of polymkeric substance comprises: polycarbonate, the polyene propyl diester, polysulfones, polyolefin such as polypropylene; Polyester such as polyethylene terephthalate or poly-naphthoic acid second diester, polyvinyl alcohol polymer, norbornene polymkeric substance, acrylate copolymer, styrene polymer, cellulosic polymer, and be selected from two or three or the potpourri of multiple polymers of these polymkeric substance.This first protective seam 112, this second protective seam 113, the 3rd protective seam 122 and the 4th protective seam 123 can form by the method for proper method lamination of transparent film such as seeing through adhesive agent, the method for extrusion molding lamination one film or the method for coating and curing macromolecular liquid.Postpone in the isoplanar of this first protective seam 112, this second protective seam 113, the 3rd protective seam 122 and the 4th protective seam 123 and thickness direction retardation can or be made Be Controlled on the program that film formed this layer in cambial program.Perhaps, delay can reduce inner method of twisting and Be Controlled by wherein heating after this layer formation.
On at least one opposed surface of one surface laminated of this optical compensation mould 130 Polarizer 110 on this (in the present embodiment; this optical compensation mould 130 is laminated on second protective seam 113 of Polarizer 110 on this); to form an optical compensating polarized light plate 10; another surface of this optical compensation mould 130 then fits on this liquid crystal cells 100; and the absorption axes of the vertical leap of the slow axis of this optical compensation films 130 Polarizer 110 on this; and this optical compensation films 130 manifest that scope postpones 10 to 190 millimicrons isoplanar and scope 2 to 8; Nz=(nx-nz)/(nx-ny) wherein; this nz is the refractive index of the direction of the Z axle of the thickness direction of expression optical compensation films; nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of the optical compensation films of the thin plate of Z axle, and ny is the refractive index that is illustrated in perpendicular to the direction of the Y-axis of the direction of the optical compensation films of Z axle and X-axis.In explanation; isoplanar delay, thickness direction retardation and Nz be defined as respectively (nx-ny) d, (nx+ny)/2-nz}d and (nx-nz)/(nx-ny); wherein nz is the refractive index of the direction of the Z axle of the thickness direction of expression optical compensation films; nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of the optical compensation films of the thin plate of Z axle; ny is the refractive index that is illustrated in perpendicular to the direction of the Y-axis of the direction of the optical compensation films of Z axle and X-axis, and d is the thickness of each protective seam or each optical compensation films.This optical compensation mould 130 can use any suitable transparent material not have any special restriction for forming making, can preferably use a kind of light transmittance excellent and seldom directed inhomogeneous and postpone uneven material as this optical compensation films 130, it can use the polymkeric substance of transparency excellence as transparent material usually, can be cellulose or macromolecule resin material, for example have: Triafol T (Triacetate Cellulose, TAC), cellulose diacetate (Diacetate Cellulose), cellulose acetate-butyrate (Cellulose Acetate Butyrate), polycarbonate (Polycarbonate), cycloolefin co-polymer (Cyclic Olefin Copolymer), the styrene resin, the vinyl cyanide resin, polyester resin, polysulfones (Polysulfone), polyethersulfone, also can preferably use a kind of polymkeric substance by viewpoint that stress postpones to change looks because of producing with little photoelasticity number.The example of polymkeric substance comprises the material in the explanation that is set forth in above first protective seam 112, second protective seam 113, the 3rd protective seam 121 and the 4th protective seam 123; and the method for making of this optical compensation mould 130 can and be solidified the method for high molecule liquid crystal or forms in conjunction with the method for these methods by proper method such as the method for extending a polymeric membrane, coating, and can use suitable extension method such as uniaxial extension method or twin shaft extension method as for the film extension method that forms optical compensation films 130.Subsidiary one carries, a kind of by being bonded to the also following extension polymeric membrane of the running of the convergent force of the heat shrink films of heating of polymeric membrane, and the method for the thickness direction refractive index of control polymeric membrane, or a kind ofly apply electric field to polymeric membrane by direction in thickness, and after obtaining polymeric membrane, extend polymeric membrane, control the method for the orientation of polymkeric substance simultaneously, can be used in the control isoplanar and postpone and Nz.Yet this optical compensation films of lamination 130 in this on the Polarizer 110, made the slow axis of this optical compensation films 130 cross in the program of the absorption axes of Polarizer 110 on this, with regard to compensation effect, preferable diaxon is perpendicular to one another as much as possible, although with regard to operational paradigm, diaxon does not need fully to be perpendicular to one another.
This adhesion layer 140 similarly is that the viewpoint that dust enters is looked it for avoiding the optical axis displacement and avoiding foreign matter in the present embodiment, on these optical compensation films 130 preferable these second protective seams 113 that are laminated to Polarizer 110 that stick together.Proper method similarly is to see through the method that this adhesion layer 140 sticks together, and can use as sticking together lamination.There is no particular restriction to be used in the adhesive agent that forms this adhesion layer 140.Look from avoiding this optical compensation films 130 and the optical property change separately of this last Polarizer 110, can preferably use without any need for the high temperature program and can harden and dry adhesive agent, and can preferably use without any need for the adhesive agent of long-time sclerosis and drying program.With regard to this respect, can preferably use binder (tackifier) or analog.Subsidiary one carries, and this coheres this optical compensation films 130, and Polarizer 110 adhesion layer 140 each other is not shown in Fig. 3 with being somebody's turn to do upward.And material such as acrylate copolymer, siloxane polymer, polyester polymers, polyurethane polymkeric substance, polyether polymer or synthetic rubber polymkeric substance that this adhesion layer 140 can use suitable polymkeric substance to make.Additional disclosure, shown this adhesion layer 140 among Fig. 3, special adhesion layer, visual occasion needs and is arranged on one of this optical compensating polarized light plate 10 or each opposed surface, for this optical compensating polarized light plate 10 being bonded to the purpose that subject matter similarly is a liquid crystal cells 100 (promptly this optical compensation mould 110 coheres by this adhesion layer 140 with this liquid crystal cells 100).When adhesion layer is exposed to this occasion, can preferably temporarily cover adhesion layer, to avoid the surperficial contaminated of adhesion layer with barrier film or analog.
As shown in Figure 3, this liquid crystal indicator 1 can be by being provided with optical compensating polarized light plate 10 according to the present invention to form for known Polarizer on the opposed surface of this liquid crystal cells 100, be arranged on only surface of Polarizer 110 on this and when being arranged on the liquid crystal cells 100 when this optical compensating polarized light plate 10 has an optical compensation films 130, in this last Polarizer 110 and this optical compensation films 130 any all can be arranged on the side of liquid crystal cells 100, but the viewpoint from display quality is looked it, its preferable this optical compensation films 130 that is provided with on liquid crystal cells 100 sides usually.In the time of on preparation is established optical compensating polarized light plate 10 as for one of liquid crystal cells 100 or each opposition side, usually can be with of the form setting of this optical compensating polarized light plate 10 with intersection Nicol (wherein the absorption axes of optical compensating polarized light plate 10 is perpendicular to one another).Subsidiary one carries, when forming liquid crystal indicator 1, visual occasion needs and uses various optical module such as retardation plate, light diffusing board and the light of incorporating into to 1 li of liquid crystal indicator to assemble sheet, and perhaps close the visual field needs and these optical modules and optical compensating polarized light plate 10 can be combined.Each layer that constitutes liquid crystal indicator 1 can come completely or partially to engage each other by adhesive agent, and optical compensating polarized light plate 10 according to the present invention can be used in and forms liquid crystal indicator 1 or be used in various purposes.When reality is used optical compensating polarized light plate 10, the visual occasion of the laminate layers of suitable optical layers such as resin coated layer, resin molding, anti-reflecting layer, antistatic layer and anti-dazzle photosphere needs and is provided with, for the suitable purpose of strengthening, improve thermotolerance and weatherability.
In former first preferred embodiment; this time Polarizer 120 includes this second polarisation assembly 121; the 3rd protective seam 122 and the 4th protective seam 123; and on two surfaces of this second polarisation assembly 121, the 3rd protective seam 122 is set respectively and the 4th protective seam 123 is protected the second polarisation assembly 121; yet; for increasing the effect of its compensation; embodiment actually can be as shown in Figure 6; the following Polarizer synoptic diagram of the present invention's second preferred embodiment; between the 4th protective seam 123 and this liquid crystal cells 100, also can put this optical compensation films 130, to strengthen the effect of entire compensation.
Actually; if can be under the prerequisite of possessing previous original function; and can remove assembly in this liquid crystal indicator 1; can significantly reduce whole thickness and save cost; see also shown in Figure 7; the synoptic diagram of the present invention's the 3rd preferred embodiment; when second protective seam 113 (seeing also shown in Figure 4) of Polarizer on this 110 is same nature material or identical material (as being TAC) with this optical compensation mould 130; 113 of second protective seams should going up Polarizer 110 can omit; mainly just protect the effect of this first polarisation assembly 111 with it because of this optical compensation films 130; though the above Polarizer 110 of present embodiment is an example; yet this time Polarizer 120 is embodiment execution like this also.
See also shown in Figure 8; the synoptic diagram of the 4th preferred embodiment of the present invention; present embodiment is in being coated with and the curing high molecule liquid crystal when this second protective seam 113 with the different of the 3rd preferred embodiment; and after the extension via single shaft or twin shaft; then can form the protective seam of tool compensation effect, so then can omit this optical compensation films 130 (seeing also shown in Figure 4), though the above Polarizer 110 of present embodiment is an example; yet this time Polarizer 120 is embodiment execution like this also.
Thus, the invention provides, can increase liquid crystal indicator visual angle and high contrast ratio, so the present invention has progressive and meet the important document of applying for patent of invention, file an application in accordance with the law relevant for a kind of optical compensation films.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is looked described the claim scope person of defining and is as the criterion.
Claims (11)
1. optical compensation films, it is characterized in that, this optical compensation films manifest that scope postpones in the isoplanar of 10 to 190 millimicrons (nm) and the Nz scope 2 to 8, Nz=(nx-nz)/(nx-ny) wherein, this nz is the refractive index of the direction of the Z axle of the thickness direction of this optical compensation films of expression, this nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of this optical compensation films of the thin plate of this Z axle, this ny for expression perpendicular to the two the refractive index of direction of Y-axis of direction of this optical compensation films of this Z axle and this X-axis.
2. optical compensation films as claimed in claim 1 is characterized in that the material of this optical compensation films can be cellulose, and this cellulose can be following arbitrary option: Triafol T, cellulose diacetate, cellulose acetate-butyrate.
3. optical compensation films as claimed in claim 1, it is characterized in that, the material of this optical compensation films can be macromolecule resin material, and this macromolecule resin material material can be following arbitrary option: polycarbonate, cycloolefin co-polymer, styrene resin, vinyl cyanide resin, polyester resin, polysulfones, polyethersulfone.
4. an optical compensating polarized light plate is characterized in that, comprises:
One optical compensation films, this optical compensation films manifest that scope postpones 10 to 190 millimicrons isoplanar and the Nz scope 2 to 8, Nz=(nx-nz)/(nx-ny) wherein, this nz is the refractive index of the direction of the Z axle of the thickness direction of this optical compensation films of expression, this nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of this optical compensation films of the thin plate of this Z axle, this ny for expression perpendicular to the two the refractive index of direction of Y-axis of direction of this optical compensation films of this Z axle and this X-axis; And
One Polarizer, this Polarizer includes:
One polarisation assembly and at least one protective seam; this protective seam manifests isoplanar delay that is not more than 10 millimicrons and the thickness direction retardation that is not more than 10 millimicrons; and this optical compensation films is laminated at least one surface of this Polarizer, makes the slow axis of each this optical compensation films perpendicular to the absorption axes of this Polarizer.
5. optical compensating polarized light plate as claimed in claim 4 is characterized in that the material of this optical compensation films can be cellulose, and this cellulose can be following arbitrary option: Triafol T, cellulose diacetate, cellulose acetate-butyrate.
6. optical compensating polarized light plate as claimed in claim 4, it is characterized in that, the material of this optical compensation films can be macromolecule resin material, and this macromolecule resin material material can be following arbitrary option: polycarbonate, cycloolefin co-polymer, styrene resin, vinyl cyanide resin, polyester resin, polysulfones, polyethersulfone.
7. optical compensating polarized light plate as claimed in claim 4 is characterized in that, this polarisation assembly is an absorption-type polarisation assembly, and this absorption-type polarisation assembly selectivity is made by the polyvinyl alcohol (PVA) complex thin film of iodine or dyestuff.
8. a liquid crystal indicator is characterized in that, comprises:
One liquid crystal cells and an optical compensating polarized light plate, and this optical compensating polarized light plate is arranged at least one surface of this liquid crystal cells, and this optical compensating polarized light plate includes:
A kind of optical compensation films, this optical compensation films manifest that scope postpones 10 to 190 millimicrons isoplanar and the Nz scope 2 to 8, Nz=(nx-nz)/(nx-ny) wherein, this nz is the refractive index of the direction of the Z axle of the thickness direction of this optical compensation films of expression, this nx is the refractive index that is illustrated in perpendicular to the direction of the X-axis of the direction of this optical compensation films of the thin plate of this Z axle, this ny for expression perpendicular to the two the refractive index of direction of Y-axis of direction of this optical compensation films of this Z axle and this X-axis; And a Polarizer, this Polarizer includes:
One polarisation assembly; And at least one protective seam; this protective seam manifests isoplanar delay that is not more than 10 millimicrons and the thickness direction retardation that is not more than 10 millimicrons; and this optical compensation films is laminated at least one surface of this Polarizer, makes the slow axis of each this optical compensation films perpendicular to the absorption axes of this Polarizer.
9. liquid crystal indicator as claimed in claim 8 is characterized in that the material of this optical compensation films can be cellulose, and this cellulose can be following arbitrary option: Triafol T, cellulose diacetate, cellulose acetate-butyrate.
10. liquid crystal indicator as claimed in claim 8, it is characterized in that, the material of this optical compensation films can be macromolecule resin material, and this macromolecule resin material material can be following arbitrary option: polycarbonate, cycloolefin co-polymer, styrene resin, vinyl cyanide resin, polyester resin, polysulfones, polyethersulfone.
11. liquid crystal indicator as claimed in claim 8 is characterized in that, this polarisation assembly is an absorption-type polarisation assembly, and this absorption-type polarisation assembly selectivity is made by the polyvinyl alcohol (PVA) complex thin film of iodine or dyestuff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510005987 CN1815324A (en) | 2005-02-02 | 2005-02-02 | Optical compensating film, optical compensating polarized light plate and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510005987 CN1815324A (en) | 2005-02-02 | 2005-02-02 | Optical compensating film, optical compensating polarized light plate and liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN1815324A true CN1815324A (en) | 2006-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510005987 Pending CN1815324A (en) | 2005-02-02 | 2005-02-02 | Optical compensating film, optical compensating polarized light plate and liquid crystal display device |
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| CN (1) | CN1815324A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101529284B (en) * | 2006-09-15 | 2012-05-30 | Mgc菲尔须特股份有限公司 | Retardation film |
| CN106019448A (en) * | 2015-03-31 | 2016-10-12 | 东友精细化工有限公司 | Composite polarizing plate |
| CN106597730A (en) * | 2016-12-27 | 2017-04-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display |
| CN107209420A (en) * | 2015-01-19 | 2017-09-26 | 奥特司科技株式会社 | Liquid crystal display device and head-up display device |
| US10146000B2 (en) | 2014-03-31 | 2018-12-04 | Samsung Sdi Co., Ltd. | Polarizing plate, method for manufacturing the same, and optical display including the same |
| CN111971595A (en) * | 2018-04-17 | 2020-11-20 | 株式会社Lg化学 | Elliptically polarizing plate and organic light-emitting device |
-
2005
- 2005-02-02 CN CN 200510005987 patent/CN1815324A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101529284B (en) * | 2006-09-15 | 2012-05-30 | Mgc菲尔须特股份有限公司 | Retardation film |
| US10146000B2 (en) | 2014-03-31 | 2018-12-04 | Samsung Sdi Co., Ltd. | Polarizing plate, method for manufacturing the same, and optical display including the same |
| CN107209420A (en) * | 2015-01-19 | 2017-09-26 | 奥特司科技株式会社 | Liquid crystal display device and head-up display device |
| CN106019448A (en) * | 2015-03-31 | 2016-10-12 | 东友精细化工有限公司 | Composite polarizing plate |
| CN106597730A (en) * | 2016-12-27 | 2017-04-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display |
| CN111971595A (en) * | 2018-04-17 | 2020-11-20 | 株式会社Lg化学 | Elliptically polarizing plate and organic light-emitting device |
| CN111971595B (en) * | 2018-04-17 | 2022-05-31 | 株式会社Lg化学 | Elliptically polarizing plate and organic light-emitting device |
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