WO2003052505A1 - Cellule d'affichage a cristaux liquides - Google Patents
Cellule d'affichage a cristaux liquides Download PDFInfo
- Publication number
- WO2003052505A1 WO2003052505A1 PCT/JP2002/012916 JP0212916W WO03052505A1 WO 2003052505 A1 WO2003052505 A1 WO 2003052505A1 JP 0212916 W JP0212916 W JP 0212916W WO 03052505 A1 WO03052505 A1 WO 03052505A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- film
- transparent
- crystal display
- display cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- G02F1/139—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 orientation effects in which the liquid crystal remains transparent
- G02F1/141—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 orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- 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
- G02F1/133337—Layers preventing ion diffusion, e.g. by ion absorption
-
- 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
- G02F1/133345—Insulating layers
-
- 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
- G02F1/133357—Planarisation layers
Definitions
- the present invention relates to a liquid crystal display cell excellent in high-speed response, impact resistance, high viewing angle, bistable memory, high contrast, large screen display, and the like.
- a pair of substrates with a transparent electrode film is used in which a transparent electrode film such as ITO and an alignment film made of a high molecule such as polyimide are sequentially laminated on the surface of a glass substrate.
- a transparent electrode film such as ITO
- an alignment film made of a high molecule such as polyimide
- the alignment film is damaged by a foreign substance mixed inside the liquid crystal cell during the manufacturing process, and as a result, conduction occurs between the upper and lower electrodes, and display defects caused by this conduction are reduced. May occur.
- a highly hydrophobic resin such as a polyimide resin is often used as the alignment film.
- the adhesion between the insulating film and the alignment film can be improved.
- the liquid crystal display cell may have insufficient display performance and display unevenness.
- one of the applicants of the present application disclosed in Japanese Patent Application Laid-Open No. Hei 4-124747 a coating solution containing an inorganic compound having a specific particle size in order to form an insulating film having excellent adhesion to an alignment film. Has been proposed.
- liquid crystal materials have been improved in order to reduce power consumption.
- liquid crystals having a strong polar functional group exhibiting a low threshold voltage have been used as a liquid crystal material.
- a panel using such a liquid crystal has a problem of poor display due to movable ions in the liquid crystal as compared with a conventional panel for a liquid crystal display device. For this reason, mobile ions (ionic impurities) in the liquid crystal have been reduced, but it is difficult to remove them at a high level and effectively. The solution has not been reached.
- the amount of information that is sent Den is expected to be a 1 0 3 to 1 0 6 times, beautiful video on the liquid crystal display equipment It is required that the display be possible.
- a display using this ferroelectric liquid crystal usually has a thin cell thickness. It is used in a comb-stabilized state, and in this case, it is said to have a microsecond high-speed response, a wide viewing angle, and a bistable memory.
- the present inventors have further studied the underlying substrate of the alignment film, and as a result, when the alignment film is formed on a transparent film containing ion-adsorbing inorganic oxide fine particles having a specific particle size range, In addition to solving the above-mentioned problems in the conventional technology, an alignment film having excellent surface smoothness can be obtained. As a result, the alignment of the liquid crystal is improved, so that structural defects do not occur and a certain degree of impact is obtained.
- the present invention has been found to be able to improve the electro-optical characteristics of the liquid crystal cell, such as lowering the operating voltage and improving the voltage holding ratio, because the liquid crystal layer exhibits a stable orientation to the liquid crystal layer and the amount of mobile ions in the liquid crystal layer can be reduced. Was completed.
- An object of the present invention is to provide a liquid crystal display cell which has a good orientation of a ferroelectric liquid crystal or an antiferroelectric liquid crystal and can be applied to a high-speed response, a high viewing angle, a bistable memory property, a high contrast, a large screen display, and the like.
- a pair of substrates with a transparent electrode film in which a transparent electrode film, a transparent film, and an alignment film are sequentially laminated, are arranged at predetermined intervals so that the respective transparent electrode films face each other.
- a liquid crystal display sensor in which liquid crystal is sealed in a gap provided between the pair of substrates with a transparent electrode film,
- the transparent coating is composed of a matrix (A) and ion-adsorbing inorganic oxide fine particles.
- the average surface roughness of the alignment film is 7 ⁇ or less
- the liquid crystal is a ferroelectric liquid crystal or an antiferroelectric liquid crystal
- the ferroelectric liquid crystal is a smectic liquid crystal or a chiral smectic liquid crystal. It is preferable that a polymer stabilizer is further contained together with the ferroelectric liquid crystal or the antiferroelectric liquid crystal. As the polymer stabilizer, a photofunctional resin is preferable.
- liquid crystal display cell a pair of substrates with a transparent electrode film in which a transparent electrode film, a transparent film, and an alignment film are sequentially laminated on at least one surface of the substrate, and the respective transparent electrode films face each other.
- the liquid crystal is sealed in a gap provided between the pair of substrates with a transparent electrode film as described above.
- the substrate is not particularly limited, and examples thereof include a glass substrate, a ceramic substrate, a metal substrate, and a plastic substrate, which are appropriately selected according to the application.
- One of the substrates only needs to be transparent, and therefore, two types of substrates made of different materials can be used as a pair.
- the liquid crystal display cell according to the present invention will be specifically described with reference to FIG. You.
- FIG. 1 is a cross-sectional view schematically illustrating one embodiment of the liquid crystal display cell according to the present invention.
- the liquid crystal display cell 1 has a pair of transparent electrode film substrates 2, 2 in which a transparent electrode film 12, a transparent film 13, and an alignment film 14 are sequentially laminated on a surface of a glass substrate 11. , 12 are arranged at a predetermined interval d so as to face each other, and the liquid crystal 4 is sealed in the gap between the substrates provided with the transparent electrode films 12 at the predetermined interval d. To provide a predetermined distance d between the transparent electrode films 12. A plurality of spacer particles 5 may be interposed.
- the transparent film 13 is a film formed by applying and drying a coating liquid for forming a transparent film described later on the substrate on which the transparent electrode film 12 is formed.
- the transparent film 13 has an extremely flat surface, high surface hardness, excellent transparency and abrasion resistance, high insulation resistance, and good adhesion between the transparent film 13 and the alignment film 14. In addition, mobile ions in the liquid crystal panel can be effectively reduced.
- a substrate with a transparent electrode film in which an alkali passivation film such as a SiO 2 film is further formed between the glass substrate 11 and the transparent electrode film 12 may be used.
- an alkali passivation film such as a SiO 2 film
- the “average surface roughness” in relation to the smoothness of the surfaces of the transparent electrode film, the transparent film and the alignment film is based on JIS B 0601-1982, and is twice the center line average roughness (Ra). , Ie, 2 (Ra). Also, at this time, the concave and convex of the surface were measured using an atomic force microscope (AMF) (Seiko Electronics Co., Ltd .: SPI37 00).
- AMF atomic force microscope
- the transparent electrode film 12 formed on the surface of the glass substrate a conventionally known transparent electrode film such as a conductive oxide such as ITO and a metal such as gold and silver can be used.
- the average surface roughness of the transparent electrode film is not particularly limited, but is preferably 30 nm or less, more preferably 10 nm or less. If the average surface roughness exceeds 30 nm, the surface average roughness of the finally obtained alignment film (formed on the transparent film) may not be less than 7 nm, and structural defects may occur when ferroelectric liquid crystal is used. In some cases, display performance may be degraded.
- Such a transparent electrode film can be manufactured by a known method such as a CVD method or a coating method.
- the thickness of the transparent electrode film may be any thickness that can maintain continuity and does not impair transparency.
- the transparent film is formed on the transparent electrode film and comprises (A) a matrix component and (B) ion-adsorbing inorganic oxide fine particles, and functions as an insulating film.
- the transparent coating preferably has a thickness in the range of 10 to 500 nm. More preferably, it is in the range of 30 to 200 nm.
- the thickness of the transparent film is less than the lower limit, uncoated portions due to pinhole defects and repelling of the film easily occur in the transparent film, which not only does not function as an insulating film, but also does not function as an insulating film. Uniform surface roughness is obtained May not be possible.
- the thickness of the transparent film exceeds the upper limit, the voltage loss due to the transparent film increases when driving the voltage of the liquid crystal panel, so that the power consumption of the liquid crystal panel increases and the practicality decreases.
- the pore volume of the transparent coating is 0.01 to 0.3 ml / g, more preferably 0.05 to 0.SmlZg, and the average pore diameter is 1 to 10 nm, more preferably 2 to 8 nm. It is desirable to have.
- the pore volume is less than 0.01 ml / g, the pores are so small that the ion adsorption capacity of the inorganic oxide particles cannot be sufficiently exhibited. If the pore volume exceeds 0.3 ml / g, the membrane strength becomes insufficient. Sometimes.
- the average pore diameter is less than 1 nm, the diffusion rate of ions when a voltage is applied is low, and the ion-adsorbing inorganic oxide particles may not be able to sufficiently exhibit the ion-adsorbing ability.
- the average pore diameter exceeds lOnm, the strength of the membrane may be insufficient, and the average surface roughness of the transparent coating surface may exceed 10 nm.
- the pore volume and average pore diameter of such a transparent film are measured by peeling the transparent film formed on the substrate, and measuring the peeled transparent film by the N 2 adsorption method.
- the (A) matrix component constituting such a transparent film is selected from (a) an acetylacetonatochelate compound, (b) an organic silicon compound, (c) a polysilazane and (d) a metal alkoxide. Those derived from more than one matrix-forming component are preferred.
- the acetyl acetonato chelate compound has excellent film-forming properties, and the (a) acetyl acetonato chelate compound has a matrix component derived therefrom. When it is contained, a transparent film excellent in alkali resistance, acid resistance, salt water resistance, water resistance, solvent resistance and the like can be formed.
- a transparent coating containing a matrix component derived from an organic silicon compound has excellent scratch resistance, acid resistance, alkali resistance, water resistance, and insulation properties.
- a transparent coating containing a matrix component derived from a metal alkoxide has excellent scratch resistance, acid resistance, alkali resistance, water resistance, and insulation properties.
- an acetyl acetonato chelate compound (b) an organic silicon compound, (c) polysilazane, and (a component derived from a metal alkoxide, When converted to oxides and nitrides, that is, (a) the component derived from the acetyl acetonato chelate compound is represented by ( ⁇ ), (b) the component derived from the organic silicon compound is represented by (Si ⁇ 2 ), When c) the component derived from polysilazane is represented by (SiN), and (d) the component derived from metal alkoxide is represented by (M 2 O x ), it is preferable that the weight ratio of each component satisfies the following relationship. .
- the mixing ratio of the component derived from the organic silicon compound, the component derived from the polysilazane, and the component derived from the metal alkoxide is as follows.
- the average particle diameter of the ion-adsorbing inorganic oxide fine particles is Inn! 5050 nm, and a more preferred range is 2-40 nm.
- the average particle diameter of the ion-adsorbing inorganic oxide fine particles is in the above range, regardless of the surface roughness of the transparent electrode film, the transparent film formed on the transparent electrode film with a thickness of 10 to 500 nm, The average surface roughness is within the range of lOnm or less with good reproducibility, and it has excellent adhesion to the hydrophobic alignment film and reproduces a smooth alignment film with an average surface roughness of 7 nm or less and 3 nm or less on its surface. It can be formed well.
- the average particle diameter of such inorganic oxide fine particles can be determined by a laser Doppler method or TEM observation.
- the ion-adsorbing inorganic oxide fine particles, among such oxides, crystal water is preferable as it has (a may be a hydroxyl group), specifically ⁇ ⁇ ⁇ the inorganic oxide in Itaita 2 when expressed as ⁇ , crystal water other than water of adhesion, structural water acid, the inorganic metal oxide particles moles when the surface hydroxyl groups were converted to eta 2 0 eta has the range of 0.02 to 5 is preferred . More preferably, the range of the number of moles of water ⁇ is 0 ::! ⁇ 5.
- the mole of water such as crystallization water in the above-mentioned ion-adsorbing inorganic oxide fine particles 6
- the ion adsorption capacity is too small to effectively adsorb the ions in the liquid crystal. It is difficult to obtain, and even if it is obtained, water molecules may be desorbed from the inorganic oxide fine particles, which may hinder the alignment of the liquid crystal.
- the value of the number of moles n of water in such ion-adsorbing inorganic oxide fine particles is up to 500 ° C by differential thermal analysis of the ion-adsorbing inorganic oxide fine particles dried at 120 ° C and made constant. Can be determined by calculating the amount of water that has been reduced as a number of moles of water per mole of the inorganic metal oxide.
- the (B) ion-adsorbing inorganic oxide fine particles are inorganic and / or organic ions, inorganic and Z or organic ions present in the liquid crystal as impurities in the liquid crystal or eluted from the alignment film or the sealant.
- the fine particles are capable of adsorbing water, and have an ion adsorption capacity in the range of 0.1 to 3.0 mmol Zg. If the ion adsorption capacity is smaller than the lower limit, the reduction of movable ions in the liquid crystal layer becomes insufficient, the high-voltage holding characteristics may be reduced, the reliability may be reduced, and display defects may occur or power consumption may be reduced. Sometimes it cannot be reduced. In addition, it is difficult to obtain (B) inorganic oxide fine particles having a large ion adsorption capacity exceeding the above upper limit.
- the ions that can be adsorbed by the ion-adsorbing inorganic oxide fine particles include, for example, Na +, K +, Rb C s + , Li ⁇ Ag Mg + , Ca + , S r +, Ba ⁇ NH 4 + such inorganic cations, F-, Cl @ -, S_ ⁇ 4 2 - inorganic, such as Anion, formate ion, an organic such as acetic acid I on ⁇ - one, tetraethyl ammonium Niu-ion, and organic cations such as tetrapropylammonium ⁇ Nmoniumuion is No.
- the ion adsorption capacity of the ion-adsorbing inorganic oxide fine particles is measured by the following method. 12
- the aqueous solution of NaCl 100g of concentration 1 wt 0/0, the I ON adsorbing inorganic oxide fine particles 1.5g was constant weight by being dried at 120 ° C was added and after 15 hours stirred at room temperature (25 ° C), filtered
- the filtrate is sampled, the Na ion concentration in the filtrate is analyzed by atomic absorption spectrometry, and the difference between the Na ion concentration of the original NaCl aqueous solution and the Na ion concentration is used to determine the amount of inorganic cations adsorbed by the ion-adsorbing inorganic oxide fine particles. (Mmol / g ).
- the concentration of 1 wt 0/0 of tetramethylammonium Yu arm Hyde port oxide solution 100 g, a 120 ° C in a dry ion-adsorbing inorganic oxide fine particles 1.5g was constant weight by the addition, stirred for 15 hours at room temperature (25 ° C) Then, the filtrate is collected by filtration, and the concentration of tetramethylammonium ion in the filtrate is analyzed by ion chromatography, and from the concentration difference from the original aqueous solution, the organic cation adsorption amount of g).
- the filtrate was collected by filtration, and the acetate ion concentration in the filtrate was analyzed by ion chromatography. From the concentration difference from the original aqueous solution, the organic anion adsorption amount (mm o lZ g).
- insulating or conductive inorganic compound particles other than the (B) ion-adsorbing inorganic oxide fine particles may be used in combination.
- the conductive inorganic oxide fine particles are preferably used in the form of a sol dispersed in water or an organic solvent. However, as long as the inorganic oxide fine particles can be dispersed in the coating liquid for forming a transparent film in a monodisperse or nearly monodisperse state. Inorganic oxide fine particles in a state other than the sol may be used.
- the content of the (A) matrix component in the transparent coating is preferably in the range of 30 to 95% by weight in terms of oxides and nitrides, and (B) the content of the ion-adsorbing inorganic oxide particles is preferably It is preferably in the range of 5 to 70% by weight in terms of oxide.
- the alignment film formed of a highly hydrophobic resin such as a polyimide resin on the surface of the transparent coating When the matrix component and the ion-adsorbing inorganic oxide particles are present in the transparent coating within such a range, the alignment film formed of a highly hydrophobic resin such as a polyimide resin on the surface of the transparent coating.
- a transparent film capable of effectively reducing ions in the liquid crystal panel can be formed while being able to form with good adhesion. If the surface roughness of the transparent electrode film is 30 nm or less, the transparent film becomes a smooth transparent film with an average surface roughness of 1 Onm or less, and an alignment film made of a highly hydrophobic resin such as a polyimide resin.
- the alignment film formed on the surface becomes a smooth film with an average surface roughness of 7 nm or less, and an alignment film with excellent alignment of liquid crystals without structural defects can be obtained. Therefore, it is possible to obtain a liquid crystal display cell excellent in high-speed response, high viewing angle, bistable memory property, high contrast, and large-screen display performance. 6
- the inorganic cations, inorganic anions, organic cations, and organic anions that exist in or elute from the liquid crystal, the alignment film, the sealant, or the like. Can be absorbed, so that the ion concentration in the liquid crystal layer can be made substantially free of ions, so that the operating voltage is low, the voltage holding ratio is high, and the power consumption can be reduced. .
- the surface roughness of the transparent electrode film is 30 nm or less, a smooth transparent film having an average surface roughness of 1 Onm or less can be formed, and furthermore, a resin having strong hydrophobicity such as a polyimide resin can be formed.
- a resin having strong hydrophobicity such as a polyimide resin
- the average surface roughness referred to in the present invention is shown as a value twice as large as the following center line average roughness (Ra) in JISB0601-1982.
- the method for forming such a transparent film it can be formed, for example, by coating and drying (firing as necessary) a coating solution for forming a transparent film described below.
- ( ⁇ ′) matrix component precursor and ion-adsorbing inorganic oxide particles are dispersed in a mixed solvent composed of water and an organic solvent.
- the (II,) matrix component precursor one or a mixture of two or more selected from acetyl acetonato chelate compounds, organic silicon compounds, polysilazanes and metal alkoxides is used.
- the chelate compound is a chelate compound having acetylacetone as a ligand, and is a compound represented by the following chemical formula (1) or a condensate thereof.
- M 1 is selected from Periodic Tables IB, IIA, B, IIIA, B, IVA, B, VA, B, VIA, VIIA, VIII Elemental or vanadyl (VO 2). Of these, preferred combinations of these elements and a and b are as shown in the following table. ]
- Such compounds include, for example, dibutoxy-bisacetylacetonatozirconium, tributoxymonoacetylacetonatozirconium, lead bisacetylacetonatolead, trisacetylacetonatoiron, Toxibisacetylacetonatohafnium, monoacetylacetonatotributoxyhafnium and the like.
- R is one C n H 2n + 1
- R ′ is _C n H 2n + 1 or one C 2 H 4 OC n H 2n + 1
- a is an integer of 0 to 3.
- n is an integer of 1 to 4.
- organic silicon compound specifically, for example, tetramethoxysilane, tetraethoxysilane, monomethyltrimethoxysilane, monoethyltriethoxysilane, monoethyltrimethoxysilane, monomethyltriethoxysilane and the like are preferably used.
- organic silicon compounds may be used as they are or after partial hydrolysis.
- partial hydrolysis can be obtained according to a conventional method, for example, a method in which an organic silicon compound is mixed with an alcohol such as methanol or ethanol, and water and an acid are added to perform partial hydrolysis. be able to.
- the coating liquid for forming a transparent film used in the present invention to which the above-mentioned organic silicon compound is added is applied on a substrate, and the obtained film is dried and baked to obtain scratch resistance, acid resistance, alkali resistance, water resistance and the like.
- the surface of the subsequently formed alignment film can be made extremely smooth.
- M 2 in the above formula is not Rukoto particularly limited as long as it is a metal, preferred M 2, Be, Al, Sc , Ti, V, Cr, Fe, Ni, Zn, Ga, Ge, As , Se, Y, Zr, Nb, In, Sn, Sb, Te, Hf, Ta, W, Pb, Bi, Ce or Cu.
- metal alkoxide specifically, tetrabutoxyzirconium, diisopropoxydioctyloxytitanium, diethoxylead and the like are preferably used.
- polysilazane a polysilazane having a repeating unit represented by the following formula (3) is used.
- RR 2 and R 3 are each a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.
- the polysilazane represented by the formula (3) is used as the matrix component precursor, a polysilazane in which the alkyl group is a methyl group, an ethyl group, or a propyl group is preferable.
- the alkyl group is a methyl group, an ethyl group, or a propyl group.
- the polysilazane having a repeating unit represented by the above formula (3) may be linear or cyclic, and contains a mixture of linear polysilazane and cyclic polysilazane. You may.
- the number average molecular weight of such a polysilazane is desirably in the range of 500 to 100,000, preferably in the range of 1,000 to 4,000. If the number average molecular weight is less than 500, the low molecular weight polysilazane volatilizes during heat curing, and the resulting transparent film tends to be porous. If the molecular weight exceeds 10,000, the fluidity of the coating solution is reduced. And the surface flatness of the transparent coating tends to decrease.
- the matrix component precursors may be used alone or in combination of two or more.
- the coating liquid for forming a transparent film which can be suitably used in the present invention, comprises (A) a matrix-forming component and (B) ion-adsorbing inorganic oxide particles which are uniformly dissolved or dispersed in a mixed solvent composed of water and an organic solvent. ing.
- organic solvents selected from alcohols, ethers, glycols, ketones, and the like are used as the organic solvent used in such a coating liquid for forming a transparent film. Such organic solvents may be used alone or in combination of two or more.
- the solid content concentration in the coating solution is 15% by weight or less as a total value of (A) the matrix component precursor and (B) the ion-adsorbing inorganic oxide particles converted to oxides and nitrides. preferable. If this value exceeds 15% by weight, the storage stability of the coating solution tends to decrease, while the solid content concentration decreases. If it is extremely low, it depends on the thickness of the transparent film, but it is necessary to repeat the coating operation many times to obtain the desired film thickness. Therefore, the solid content concentration of 0.1% by weight or more is practical. It is.
- the matrix forming component is preferably contained in the coating solution in such an amount as to be 30 to 95% by weight in the formed transparent film in terms of oxide or nitride.
- the ion-adsorbing inorganic oxide particles are preferably contained in the coating solution in such an amount as to be 5 to 70% by weight in the formed transparent film in terms of oxide.
- the surface of the transparent film obtained from this coating solution is further oriented on a surface of a highly hydrophobic resin such as a polyimide resin.
- a film can be formed with good adhesion, and a transparent film that can effectively reduce the ions in the liquid crystal panel can be formed. If it exceeds 70% by weight, the adhesion between the transparent film and the transparent electrode film decreases. In some cases, the average surface roughness of the transparent film may not be less than 10 nm.
- the coating solution contains the ion-adsorbing inorganic oxide particles and the ion-adsorbing inorganic oxide particles. Fine particles other than the conductive inorganic oxide particles are preferably present in the formed transparent film in an amount of 5 to 70% by weight in total of oxides and nitrides.
- the water concentration in the coating solution is preferably in the range of 0.1 to 50% by weight. If this value is less than 0.1 wt 0/0, ⁇ cetyl ⁇ Setona Toki rate compound, an organic Kei-containing compound, a polysilazane and metal alkoxide hydrolysis, Condensation polymerization, complexation, etc. are not sufficiently performed, and the resulting coating has a tendency to decrease in abrasion resistance and durability. When the water concentration exceeds 50% by weight, the coating solution repels from the base material during application. It may be easily damaged, and it may be difficult to form a film.
- the mixing ratio of the ( ⁇ ′) matrix forming precursor and the ( ⁇ ) ion-adsorbing inorganic oxide particles contained in the coating liquid, and the metal species contained in the ( ⁇ ′) matrix component precursor (I) The refractive index and the dielectric constant of the obtained film can be freely controlled by the type of the ion-adsorbing inorganic oxide particles and the like.
- the electrode By forming a transparent film having a controlled refractive index on the transparent electrode film of the substrate with a transparent electrode film in this manner, for example, the electrode can be made to have a refractive index higher than that of a direction film formed thereon. Can be prevented from being seen through.
- the transparent coating is applied to the surface of a substrate such as a glass substrate with a transparent electrode film by a method such as dipping, spinner, spray, roll coater, or flexographic printing. Then, it is dried at room temperature to 90 ° C., and is further heated to 200 ° C. or higher, and in some cases, heated to 300 ° C. or higher to cure the film.
- the transparent film formed on the substrate may be subjected to a curing acceleration treatment by the following method.
- the uncured coating film has a wavelength shorter than that of visible light.
- the treatment include irradiating a short electromagnetic wave or exposing the uncured film to a gas atmosphere that promotes a curing reaction.
- electromagnetic wave applied to the uncured coating before heating include ultraviolet rays, electron beams, X-rays, and y-rays, and ultraviolet rays are particularly preferable.
- a high-pressure mercury lamp light intensity is 1 OmWZcm 2 or more is used as an ultraviolet source, LOOmjZcm 2 or more, preferably It is desirable to irradiate an ultraviolet ray having an energy amount of 100 OmjZcm 2 or more.
- Examples of a gas that promotes a film curing reaction in an uncured stage before heating include ammonia, ozone, and the like. When performing such a gas treatment, it is desirable to expose the uncured film to the above-mentioned active gas atmosphere having a gas concentration of 100 to 100,000 ppm, preferably 1000 to 100,000 ppm for 1 to 60 minutes. .
- the alignment film used in the liquid crystal display cell of the present invention has an average surface roughness of 7 nm. Or less, preferably 3 nm or less. If the average surface roughness of the alignment film exceeds 7 nm, the liquid crystal alignment becomes non-uniform and structural defects (zigzag defects) may occur, resulting in a problem that the display performance is reduced.
- an alignment film made of a polyimide resin is preferable.
- the polyimide resin has a small average surface roughness, and it is easy to obtain an alignment film having excellent smoothness.
- a polyimide resin for example, SE-150 and RN1199 manufactured by Nissan Chemical Industries, Ltd., and RIXO N ARIGHNER PIA-2910 manufactured by Chisso Corporation are recommended.
- the alignment film thus obtained is formed on a transparent film having an average surface roughness of 1 Onm or less, and the average surface roughness of the alignment film is 7 nm or less, preferably 3 nm or less.
- Alignment film forming method When the average surface roughness of the alignment film is 7 nm or less, no structural defects (zigzag defects) occur even when ferroelectric liquid crystal and antiferroelectric liquid crystal are used, high-speed response, high viewing angle, and bistable A liquid crystal display cell having excellent memory properties, high contrast, and large screen display performance can be obtained. Alignment film forming method
- such an alignment film is formed by applying, for example, a resin coating for forming an alignment film as described below by a flexographic printing method, a dive method, a spin coating method, a spray method, a roll coater method, etc., followed by drying and then heat treatment.
- a resin coating for forming an alignment film used at this time, a precursor of the above-described polyimide resin, for example, polyamic acid is used as necessary.
- a solution dispersed and dissolved in an organic solvent such as amide can also be used. When such a solution is used as a resin coating material for forming an alignment film, an alignment film having low average surface roughness and excellent in smoothness is easily obtained. In such a case, it is necessary to finally perform heat treatment to form polyimide.
- liquid crystal used in the liquid crystal display cell of the present invention a ferroelectric liquid crystal or an antiferroelectric liquid crystal is suitably used.
- such a liquid crystal can switch the dipole direction, that is, the direction of the liquid crystal molecules instantly, depending on the positive or negative polarity of the voltage, and is excellent in high-speed response. It has memory characteristics and bistability.
- the ferroelectric liquid crystal be a smectic liquid crystal, especially a chiral smectic liquid crystal.
- K layer S mK *
- G layer S mG *
- F layer S mF *
- ferroelectric liquid crystals include the following ferroelectric liquid crystals, in which the absolute value of the spontaneous polarization of the liquid crystal molecules is 2 to 500 nC Z cni 2 , and further 3 to 200 nC Z cm 2 It is preferably within the range.
- the response speed may be insufficient although it varies depending on the operating temperature and the viscosity of the liquid crystal.
- the response speed may be insufficient.
- Examples of the above ferroelectric liquid crystal include those represented by the following formula.
- C 10 H 21 O- CH COOCH 2 C * H (CH 3) C 2 H 5 4nC / cm 2
- liquid crystals derived from these liquid crystals can also be preferably used.
- the ferroelectric liquid crystal used in the present invention may have a V-shaped switching characteristic (transmittance is a target for the polarity of drive application) or a half-V-shaped switching characteristic (a polarity for drive application polarity) as necessary. It can also be used as a ferroelectric liquid crystal cell that shows transmittance.
- V-shaped switching characteristic transmittance is a target for the polarity of drive application
- half-V-shaped switching characteristic a polarity for drive application polarity
- a polymer stabilizer may be contained together with the liquid crystal.
- a polymer resin is used as the polymer stabilizer.
- the polymer stabilizer is included, a liquid crystal layer exhibiting the V-shaped switching characteristic or the half-V-shaped switching characteristic can be easily formed.
- the mixing ratio of the liquid crystal and the liquid crystal stabilizer at this time varies depending on the type of the liquid crystal used, but the liquid crystal stabilizer accounts for 1% of the total weight of the liquid crystal and the polymer stabilizing agent. It is preferably in the range of -30% by weight, more preferably 2-10% by weight.
- the liquid crystal layer may not be able to be stably held on the SmC * layer, for example, although it varies depending on the type of liquid crystal.
- a ferroelectric liquid crystal cell exhibiting the V-shaped switching characteristic or the half-V-shaped switching characteristic may not be obtained. If the proportion of the polymer stabilizer exceeds 30% by weight, the amount of the polymer stabilizer is too large, and the high-speed response, high viewing angle, bistable memory properties, contrast, etc. tend to decrease. Confuse.
- an organic resin is used as such a polymer stabilizer.
- a photofunctional resin is preferred, and a monovalent or polyvalent acrylate monomer, a methacrylate monomer, and a mixture thereof, which are particularly ultraviolet-curable or electron beam-curable, are preferable.
- 1,6-hexanediol acrylate, 2- (2-ethoxyethoxy) ethyl acrylate, stearyl acrylate, 1,3-butanediol acrylate, cyclohexyl methacrylate, indecyl Metatallate and the like can be mentioned.
- the liquid crystal layer containing the above-mentioned polymer stabilizer is formed by, for example, blending the above-mentioned ultraviolet curable resin monomer and liquid crystal, sealing the mixture between substrates with a transparent electrode film, and applying a voltage to the liquid crystal layer (S m C *). It can be obtained by irradiating ultraviolet rays while holding a defect-free liquid crystal layer such as (SmH *) and (Sml *) to cure the ultraviolet-curable resin monomer.
- liquid crystal display cell having a liquid crystal layer containing a polymer stabilizer can easily form a defect-free crystal layer and can be stably maintained for a long period of time. Excellent high-speed response, high viewing angle, bistable memory, contrast, etc. Susa
- a spacer can be interposed between the transparent electrode films arranged opposite to each other and / or at the periphery.
- conventionally known spacers can be used, and for example, inorganic oxide particles such as silica and alumina, organic-inorganic composite particles such as polyorganosiloxane particles, and organic resin particles can be used. .
- the average particle size of the spacer at this time is preferably smaller than the helical pitch of the liquid crystal used, and is usually preferably in the range of 0.5 to 10 xm, more preferably 1 to 5 m. Range.
- the average particle diameter of the spacer is in the range of 0.5 to 10 m and the thickness of the liquid crystal layer is made smaller than the helical pitch of the liquid crystal, the helical structure of the liquid crystal is canceled and the liquid crystal molecules are reduced. Become aligned in the direction.
- the direction of the dipole that is, the direction of the liquid crystal molecules can be switched according to the positive or negative polarity of the voltage.
- the switching time is much faster than that of a nematic liquid crystal element or the like, and a liquid crystal display having a high-speed response on the order of microseconds. A cell is obtained.
- liquid crystal display cell having a memory characteristic that the alignment state of the liquid crystal molecules is maintained even when the voltage is removed and a bistability in which the orientation of the liquid crystal molecules is in two stable states can be obtained.
- the liquid crystal display cell according to the present invention forms a transparent electrode film on the glass substrate surface as described above, and then forms a transparent film on the transparent electrode film surface, After forming an alignment film on the surface of the transparent coating, if necessary, the alignment film is rubbed once in one direction so that the rubbing directions are parallel to each other.
- a sealant is printed on the periphery of the substrate (excluding the liquid crystal injection port), and spacer particles are dispersed as necessary, and the substrates are bonded together so that the transparent electrode films face each other. It can be made by injecting the liquid crystal and, if necessary, the polymer stabilizer, and then sealing the inlet with a sealing material.
- thermosetting resin such as an epoxy resin or a phenol resin
- spacer particles may be included as described above.
- the transparent film constituting the liquid crystal display cell according to the present invention contains ion-adsorbing inorganic oxide particles having a specific particle size range, it is formed on the transparent electrode film.
- the surface of the transparent film has excellent smoothness, and also has excellent adhesion to a hydrophobic alignment film formed on the transparent film.
- the surface of the alignment film formed on the transparent film is extremely smooth, the alignment of the liquid crystal is excellent.
- the liquid crystal is formed using the polymer stabilizer, no structural defects occur for a long period of time. Therefore, when the liquid crystal display cell according to the present invention is used, high-speed response and bistable memory characteristics Thus, a display device excellent in impact resistance and the like can be obtained.
- the transparent film used in the present invention contains inorganic oxide particles having an inorganic ion adsorption ability, mobile ions in the liquid crystal layer or the like can be reduced by adsorbing them. It has high voltage holding characteristics, Power consumption can be reduced and display performance is excellent.
- Example 1 the present invention will be described with reference to examples, but the present invention is not limited to these examples.
- Example 1 the present invention will be described with reference to examples, but the present invention is not limited to these examples.
- E chill silicate 28 as matrix component precursor (Si_ ⁇ 2 concentration: 28 by weight%) 150 g in Puchiruse port cellosolve 40 g, hexylene glycol 304.4 g, was added concentration 61 wt% nitric acid 0.4g and pure water 15 g at room temperature For 2 hours. 15 g of both ion-exchange resins (Mitsubishi Chemical Corporation: Diaion) was added, and the mixture was stirred for 1 hour to deionize. Then, both ion-exchange resins were removed, and the partial hydrolyzate (oligomer) of ethyl silicate was dispersed. A liquid was obtained.
- ion-exchange resins Mitsubishi Chemical Corporation: Diaion
- diisopropoxy - di O Chi Ruo alkoxy titanium isopropyl alcohol solution (Ti_ ⁇ 2 concentration: 1 0 wt 0/0) 60 g
- Toributokishi - butanol Le solution (Zr_ ⁇ 2 concentration of mono ⁇ cetyl ⁇ Setona preparative zirconium: 13.5 wt 0/0) 22.2 g
- Zr_ ⁇ 2 concentration of mono ⁇ cetyl ⁇ Setona preparative zirconium 13.5 wt 0/0
- solids concentration 6.0% by weight of a transparent film-shaped formed coating solution (a) was prepared.
- Table 2 shows the average surface roughness of the transparent coating.
- a polyimide film-forming paint manufactured by Nissan Chemical Industries, Ltd .: RN 1199 was applied on the transparent film (A) by flexographic printing, dried at 100 ° C for 5 minutes, and then dried at 240 ° C for 30 minutes. Heat treatment was performed for minutes to form an alignment film (polyimide film). At this time, the average surface roughness of the alignment film and the following adhesion were measured. Table 2 shows the results.
- the alignment film is rubbed once in one direction so that the rubbing directions are parallel on the upper and lower substrates, and a transparent electrode film, a transparent film (A), and a rubbed alignment film are sequentially laminated on a glass substrate.
- a substrate with a transparent electrode film was obtained.
- the obtained pair of substrates with a transparent electrode film is sealed with a sealing material made of an epoxy resin and silica fine particles (SW-D1, manufactured by Catalyst Chemical Industry Co., Ltd., average particle size 1.8 ⁇ m) on the sealing part of one of the substrates.
- SW-D1 silica fine particles
- liquid crystal display cell (A) was evaluated for the amount of movable ions, display unevenness, presence or absence of structural defects, and impact resistance by the following methods.
- the surface of the alignment film is cut in parallel with a knife at a distance of 1 mm vertically and horizontally to make 100 squares, and an adhesive tape (cellophane tape (trademark)) is adhered to the squares.
- an adhesive tape (cellophane tape (trademark)
- the number of squares in which the alignment film remained without peeling when peeled was classified into the following four grades, and the adhesion was evaluated.
- the amount of mobile ions in the obtained liquid crystal display cell (A) was measured using an ion density measuring device (MTR-1 manufactured by Toyo Corporation) under the conditions of an applied voltage of 10 V and a triangular wave frequency of 0.1 Hz. It was measured.
- MTR-1 ion density measuring device manufactured by Toyo Corporation
- the presence or absence of structural defects in the aligned liquid crystal was observed with a polarizing microscope.
- the formation of the transparent film (A) was separately performed on ten substrates, and the average surface roughness of the transparent film was measured.
- the average value of the average surface roughness of the ten transparent films was 6.9 nm, the maximum was 7.3 nm, and the minimum was 6.8 nm.
- An alignment film (A) was formed on each of the transparent coatings (A), and the surface roughness of a total of ten alignment films was measured.
- the average value of the average surface roughness of the ten alignment films was 2.2 nm, the maximum value was 2.3 nm, and the minimum value was 2.1 nm.
- Silica-alumina fine particles (0.75SiO 2 '0.25Al) having an average particle diameter of 25 nm and an ion adsorption capacity of 0.
- Sinmol g obtained by drying silica'alumina (USB sol, manufactured by Catalyst Chemical Industry Co., Ltd.) as inorganic oxide fine particles
- a coating solution (B) for forming a transparent film was prepared in the same manner as in Example 1 except that 2 O 3 '0.3H 2 O) was used.
- a transparent film and an alignment film were formed in the same manner as in Example 1, and the average surface roughness and adhesion of the alignment film were measured.
- Example 3 a liquid crystal display cell (B) was prepared in the same manner as in Example 1. The obtained liquid crystal display cell (B) was evaluated for the amount of mobile ions, the presence or absence of structural defects, and the impact resistance. Table 2 shows the results. Example 3
- a ferroelectric liquid crystal (Clariant) containing 6% by weight of an atalylate monomer UCL-003 (manufactured by Dai Nippon Ink Co., Ltd.) as a photofunctional resin monomer was formed in the liquid crystal layer.
- a liquid crystal display cell (C) having a liquid crystal layer thickness of 2 m was prepared by irradiating 365 nm, irradiation intensity: 2 mWZcm 2 ) for 240 seconds.
- the obtained liquid crystal display cell (C) was evaluated for the amount of movable ions, the presence or absence of structural defects, and the impact resistance.
- Matrix component precursor as E chill silicate 28 (Si0 2 concentration of 28 by weight%) 160 g in Buchiruse port cellosolve 40 g, hexylene glycol 304.4 g, was added nitric acid 0.4 g and pure water 15 g of concentration 61% by weight at room temperature 2 Stirred for hours. 15 g of both ion-exchange resins (Mitsubishi Chemical Corporation: Diaion) was added, and the mixture was stirred for 1 hour to deionize. Then, both ion-exchange resins were removed, and the partial hydrolyzate (oligomer) of ethyl silicate was dispersed. A liquid was obtained.
- diisopropoxy - di O Chi Ruo carboxymethyl isopropyl alcohol solution of titanium Ti0 2 concentration. 10 wt ./) 90 g, Toributokishi - Monoasechiru ⁇ Setona DOO zirconium butanol solution. (Zr_ ⁇ 2 concentration: 13.5 wt%) 44.4 ⁇ to added a mixture of xylenes da recall 265.8g stirred for 48 h, solids concentration 6.0% by weight of the transparent film-forming coating liquid ( B) was prepared.
- a liquid crystal display cell (D) was prepared in the same manner as in Example 1, except that the coating liquid (B) for forming a transparent film was used.
- the formation of the transparent film (E) was separately performed on ten substrates, and the average surface roughness of the transparent film was measured.
- the average value of the average surface roughness of the 10 transparent films was 12.5 nm, the maximum value was 15.3 nm, and the minimum value was 11.8 nm.
- An alignment film (E) was formed on each of the transparent coatings (E), and the surface roughness of a total of 10 alignment films was measured.
- the average value of the average surface roughness of the ten alignment films was 3.5 nm, the maximum value was 4.1 nm, and the minimum value was 2.9 nm. Comparative Example 2
- Catalyst Kasei Kogyo Co., Ltd . Transparent coating in the same manner as in Example 1 except that Cataroid SI-80P, silica particles (SiO 2 '0.1H 2 O) obtained by drying an average particle diameter of 80 nm were used. A coating liquid for formation (C) was prepared.
- a liquid crystal display cell (E) was prepared in the same manner as in Example 1 except that the coating liquid (C) for forming a transparent film was used.
- a liquid crystal display cell (F) was prepared in the same manner as in Example 3 except that the transparent film was not formed.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2004-7009378A KR20040066913A (ko) | 2001-12-17 | 2002-12-10 | 액정 표시 셀 |
| US10/499,045 US20050046782A1 (en) | 2001-12-17 | 2002-12-10 | Liquid crystal display cell |
| EP02788769A EP1465005A4 (en) | 2001-12-17 | 2002-12-10 | LIQUID CRYSTAL DISPLAY CELL |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-383662 | 2001-12-17 | ||
| JP2001383662A JP2003186054A (ja) | 2001-12-17 | 2001-12-17 | 液晶表示セル |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003052505A1 true WO2003052505A1 (fr) | 2003-06-26 |
Family
ID=19187613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/012916 Ceased WO2003052505A1 (fr) | 2001-12-17 | 2002-12-10 | Cellule d'affichage a cristaux liquides |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20050046782A1 (ja) |
| EP (1) | EP1465005A4 (ja) |
| JP (1) | JP2003186054A (ja) |
| KR (1) | KR20040066913A (ja) |
| CN (1) | CN1605043A (ja) |
| TW (1) | TW200301393A (ja) |
| WO (1) | WO2003052505A1 (ja) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006019032A1 (ja) * | 2004-08-17 | 2006-02-23 | Matsushita Electric Industrial Co., Ltd. | プラズマディスプレイパネルとその製造方法 |
| TWI318235B (en) * | 2005-08-29 | 2009-12-11 | Univ Chung Yuan Christian | Liquid crystal composite material |
| TW200742610A (en) * | 2006-05-10 | 2007-11-16 | Tpk Touch Solutions Inc | Method of hiding transparent electrodes on a transparent substrate |
| JP4968262B2 (ja) * | 2006-12-20 | 2012-07-04 | 富士通株式会社 | 液晶表示素子及びそれを用いた電子ペーパー |
| CN103231568B (zh) * | 2007-04-13 | 2016-03-02 | 宇部兴产株式会社 | 一面平滑的聚酰亚胺薄膜 |
| FR2934380B1 (fr) * | 2008-07-25 | 2010-09-03 | Nemoptic | Procede de realisation de dispositifs a cristaux liquides nematiques bistables. |
| CN104098725B (zh) | 2014-06-05 | 2016-02-10 | 京东方科技集团股份有限公司 | 一种组合物、取向层及其制备方法、液晶取向单元、液晶显示面板 |
| US11300837B2 (en) * | 2016-06-07 | 2022-04-12 | Lg Chem, Ltd. | Method of applying particles |
| CN112424650B (zh) * | 2018-07-20 | 2022-10-11 | 3M创新有限公司 | 包括聚合物光学反射器和不连续透明涂层的光学膜 |
| CN109976017B (zh) * | 2019-04-10 | 2021-09-24 | 深圳市华星光电半导体显示技术有限公司 | 显示面板及其制作方法 |
| US11502104B2 (en) | 2019-08-15 | 2022-11-15 | Sandisk Technologies Llc | Antiferroelectric memory devices and methods of making the same |
| US11430813B2 (en) | 2019-08-15 | 2022-08-30 | Sandisk Technologies Llc | Antiferroelectric memory devices and methods of making the same |
| CN114614244B (zh) * | 2020-12-04 | 2023-09-08 | 上海中航光电子有限公司 | 一种液晶天线及其制作方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0836165A (ja) * | 1994-07-21 | 1996-02-06 | Canon Inc | 強誘電性液晶素子及びそれを用いた液晶装置 |
| JPH09211462A (ja) * | 1996-01-31 | 1997-08-15 | Shunsuke Kobayashi | 液晶表示素子 |
| JPH11119263A (ja) * | 1997-10-09 | 1999-04-30 | Citizen Watch Co Ltd | 反強誘電性液晶パネルの製造方法 |
| JP2000169766A (ja) * | 1998-12-04 | 2000-06-20 | Catalysts & Chem Ind Co Ltd | 透明イオンゲッター膜形成用塗布液、被膜付基材および液晶表示セル |
-
2001
- 2001-12-17 JP JP2001383662A patent/JP2003186054A/ja active Pending
-
2002
- 2002-12-10 EP EP02788769A patent/EP1465005A4/en not_active Withdrawn
- 2002-12-10 WO PCT/JP2002/012916 patent/WO2003052505A1/ja not_active Ceased
- 2002-12-10 KR KR10-2004-7009378A patent/KR20040066913A/ko not_active Withdrawn
- 2002-12-10 CN CNA02825192XA patent/CN1605043A/zh active Pending
- 2002-12-10 US US10/499,045 patent/US20050046782A1/en not_active Abandoned
- 2002-12-16 TW TW091136245A patent/TW200301393A/zh unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0836165A (ja) * | 1994-07-21 | 1996-02-06 | Canon Inc | 強誘電性液晶素子及びそれを用いた液晶装置 |
| JPH09211462A (ja) * | 1996-01-31 | 1997-08-15 | Shunsuke Kobayashi | 液晶表示素子 |
| JPH11119263A (ja) * | 1997-10-09 | 1999-04-30 | Citizen Watch Co Ltd | 反強誘電性液晶パネルの製造方法 |
| JP2000169766A (ja) * | 1998-12-04 | 2000-06-20 | Catalysts & Chem Ind Co Ltd | 透明イオンゲッター膜形成用塗布液、被膜付基材および液晶表示セル |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1465005A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040066913A (ko) | 2004-07-27 |
| CN1605043A (zh) | 2005-04-06 |
| US20050046782A1 (en) | 2005-03-03 |
| EP1465005A4 (en) | 2006-06-21 |
| EP1465005A1 (en) | 2004-10-06 |
| TW200301393A (en) | 2003-07-01 |
| JP2003186054A (ja) | 2003-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102317848B (zh) | 喷墨涂布用液晶取向剂、液晶取向膜及液晶显示元件 | |
| EP1465005A1 (en) | Liquid crystal display cell | |
| JP2011059692A (ja) | 液晶表示セル | |
| WO1997049775A1 (en) | Coating fluid for transparent coating, substrate with transparent coating, and use thereof | |
| JP4744657B2 (ja) | 透明イオンゲッター膜形成用塗布液、被膜付基材および液晶表示セル | |
| JP3914011B2 (ja) | 液晶表示セルおよび該液晶表示セル用塗布液 | |
| JP2009223138A (ja) | 液晶装置及びその製造方法、電子機器 | |
| JP4002385B2 (ja) | 透明イオンゲッター膜形成用塗布液、該膜付基材および液晶表示セル | |
| JP3913483B2 (ja) | 液晶表示セル | |
| JP4033620B2 (ja) | スペーサ粒子および該スペーサ粒子を用いた液晶表示装置 | |
| JP2003149653A (ja) | 液晶表示セルおよびシール剤 | |
| JP2006003571A (ja) | Ips用カラーフィルタおよび液晶表示装置 | |
| JPS6261124B2 (ja) | ||
| DE2916670A1 (de) | Verfahren zur herstellung von fluessigkristall-anzeigen | |
| US5702636A (en) | Gel-glass dispersed liquid crystals | |
| JP3153281B2 (ja) | 液晶分子の垂直配向処理方法 | |
| JPS6179645A (ja) | 透明積層導電フイルム | |
| JPS6262328B2 (ja) | ||
| JPH039323A (ja) | 液晶表示パネル用電極基板 | |
| JPS6179646A (ja) | 透明積層導電フイルム | |
| JPH11106754A (ja) | 液晶複合膜及びその作製方法 | |
| JP2000352709A (ja) | 液晶表示装置用のフィルム基板 | |
| JPS61151617A (ja) | 液晶ライトバルブ | |
| JPS60128526A (ja) | 表示兼入力装置 | |
| JPH06331991A (ja) | 液晶パネルとその製造法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR |
|
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 10499045 Country of ref document: US Ref document number: 1020047009378 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2002825192X Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2002788769 Country of ref document: EP |
|
| WWP | Wipo information: published in national office |
Ref document number: 2002788769 Country of ref document: EP |




