WO2010016284A1 - 垂直配向型液晶表示装置 - Google Patents
垂直配向型液晶表示装置 Download PDFInfo
- Publication number
- WO2010016284A1 WO2010016284A1 PCT/JP2009/052152 JP2009052152W WO2010016284A1 WO 2010016284 A1 WO2010016284 A1 WO 2010016284A1 JP 2009052152 W JP2009052152 W JP 2009052152W WO 2010016284 A1 WO2010016284 A1 WO 2010016284A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- display device
- crystal display
- refractive index
- retardation
- Prior art date
Links
Images
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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134336—Matrix
-
- 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
- G02F1/13712—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 the liquid crystal having negative dielectric anisotropy
-
- 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
- G02F2202/00—Materials and properties
- G02F2202/40—Materials having a particular birefringence, retardation
-
- 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
- G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
- G02F2413/01—Number of plates being 1
-
- 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
- G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
- G02F2413/02—Number of plates being 2
-
- 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
- G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
- G02F2413/12—Biaxial compensators
Definitions
- the present invention relates to a vertical alignment type liquid crystal display device that performs simple matrix driving (duty driving).
- Patent Document 1 describes a vertical alignment type liquid crystal display element that performs a display operation with a large duty ratio by a time-division driving method.
- the ON transmittance is lowered, so that the display becomes dark and the contrast is lowered.
- the present invention provides a vertical alignment type liquid crystal display in which the contrast and viewing angle are improved by increasing the ON transmittance during high duty driving by increasing the retardation value in the thickness direction of the liquid crystal layer beyond the normal range.
- the characteristics required for the vertical alignment type liquid crystal display device include high contrast, high-speed response, wide viewing angle, etc.
- the thickness direction retardation value of the liquid crystal layer (liquid crystal cell) is in the range of 80 nm to 400 nm. It is generally known that the appropriate region is further narrowed in consideration of high contrast and high-speed response, and the target value is 240 to 280 nm.
- the present invention provides a transparent first glass substrate provided with the first transparent electrode of the first and second transparent electrodes facing each other with a gap, as described in claim 1, and Between the transparent second glass substrate provided with the second transparent electrode, it has a negative dielectric anisotropy, and the orientation of the liquid crystal molecules is substantially perpendicular to the first and second glass substrates.
- a voltage is applied between the first and second transparent electrodes, a liquid crystal layer in which the alignment of the liquid crystal molecules is substantially parallel to the first and second glass substrates is sandwiched,
- a first polarizing plate having an absorption axis in a predetermined direction is disposed on a side of the first glass substrate opposite to the side in contact with the liquid crystal layer, and a side in contact with the liquid crystal layer of the second glass substrate.
- the retardation value in the thickness direction of the liquid crystal layer given by ⁇ n ⁇ d is set in the range of 500 nm to 1600 nm, and the first and second polarizations are set.
- retardation value in the thickness direction given by ⁇ d1 is 22 Is set in the range of nm ⁇ 1320 nm, the vertical alignment type liquid crystal display device characterized by having an optical axis perpendicular to the first and second glass substrates, is intended to resolve.
- retardation plate is a biaxial retardation plate having a refractive index anisotropy as a n x> n y> n z , when a thickness of d3,
- the in-plane retardation value given by is set in the range of 1 nm to 100 nm, and the thickness direction retardation value given by
- ⁇ d3 is in the range of 220 nm to 1320 nm.
- FIG. 3 is a cross-sectional view showing a basic configuration of an embodiment of a VA liquid crystal display device according to claims 1 to 3 of the present invention.
- FIG. 3 is a plan view showing an electrode structure according to an embodiment of the VA liquid crystal display device according to claims 1 to 3 of the present invention.
- FIG. 5 is a plan view showing a polarizing plate according to an embodiment of the VA liquid crystal display device according to claims 1 to 3 of the present invention.
- FIG. 5 is a schematic view showing a retardation plate insertion portion of the embodiment according to the VA liquid crystal display device according to claims 1 to 3 of the present invention.
- FIG. 5 is a schematic diagram which shows the structure of one Embodiment of the VA type
- FIG. 3 shows the structure of one Embodiment of the VA type
- VA type liquid crystal display device vertical alignment type liquid crystal display device
- VA vertical alignment
- FIG. 1 is a sectional view showing a basic configuration of an embodiment of a VA type liquid crystal display device according to claims 1 to 3 of the present invention
- FIG. 2 is a VA type according to claims 1 to 3 of the present invention
- FIG. 3 is a plan view showing a polarizing plate of an embodiment according to the VA type liquid crystal display device according to claims 1 to 3 of the present invention
- FIG. 3 is a plan view showing the electrode structure of the embodiment according to the liquid crystal display device.
- 4 (a) is a schematic diagram showing liquid crystal alignment in a non-driven state according to the embodiment of the VA liquid crystal display device described in claims 1 to 3 of the present invention
- FIG. FIG. 5 is a schematic diagram showing liquid crystal alignment in a driving state according to the embodiment of the VA liquid crystal display device described in ranges 1 to 3.
- VA-type liquid crystal display devices 1, 2, 3 (1: VA-type liquid crystal display device according to an embodiment of the VA-type liquid crystal display device described in claim 1 of the present invention, 2: in claim 2 of the present invention) VA-type liquid crystal display device according to the embodiment of the VA-type liquid crystal display device described above, 3: VA-type liquid crystal display device according to the embodiment of the VA-type liquid crystal display device according to claim 3 of the present invention)
- the liquid crystal panel 4 is included and an image is displayed using the liquid crystal panel 4.
- a transparent first transparent electrode 5a is formed on the entire substrate surface on one side, and a first alignment film 5b is formed on the first transparent electrode 5a.
- a transparent first glass substrate 5 obtained by rubbing the first alignment film 5b and a transparent second transparent electrode 6a formed on the entire substrate surface on one side are formed.
- the second transparent electrode A second alignment film 6b is formed on 6a, and a transparent second glass substrate 6 in which the second alignment film 6b has been rubbed with the polymer sphere 7 as a spacer material.
- the alignment film 5b and the second alignment film 6b are bonded together so as to face each other, and the periphery is sealed with a sealing material (not shown) to form the panel body 4a.
- a liquid crystal having a negative dielectric anisotropy (nematic) is formed in a gap (cell gap) between the first and second glass substrates 5 and 6 by a vacuum injection method or a dropping method.
- Liquid crystal) 8 is sealed to form a liquid crystal layer 8.
- the thickness d of the liquid crystal layer 8 is set by the diameter of the polymer sphere 7 as a spacer material.
- the first polarizing plate 9 is attached to the substrate surface (panel back surface) opposite to the side in contact with the liquid crystal layer 8 of the first glass substrate 5, and the second polarizing plate 9 is attached.
- a second polarizing plate 10 is attached to the substrate surface (panel front surface) opposite to the side in contact with the liquid crystal layer 8 of the glass substrate 6, and the liquid crystal panel 4 is completed.
- the first and second transparent electrodes 5 a and 6 a are formed such that the first transparent electrode 5 a is parallel to the lateral direction of the first glass substrate 5 (the left-right direction in FIG. 2).
- the scanning electrode connected to the scanning side driving circuit 11 and the second transparent electrode 6b are formed in parallel to the vertical direction of the second glass substrate 6 (vertical direction in FIG. 2).
- the intersection point of the first and second transparent electrodes 5a and 6a formed in parallel in the horizontal direction and the vertical direction is one pixel.
- the liquid crystal panel 4 arranges pixels in a grid pattern, and arranges the first and second transparent electrodes 5a and 6a in the horizontal direction and the vertical direction with respect to the pixels arranged in the grid pattern.
- the first and second transparent electrodes 5a and 6a in the required vertical and horizontal directions are selected and a voltage is applied.
- the liquid crystal layer 8 (liquid crystal cell) of the pixel at the intersection of the selected first and second transparent electrodes 5a and 6a in the vertical and horizontal directions is driven. That is, the liquid crystal panel 4 is driven by a simple matrix method.
- the driving is time-division multiplex driving.
- the first and second polarizing plates 9 and 10 have an absorption axis in the direction indicated by the arrow 9a, and the second polarizing plate 10 is indicated by the arrow 10a. It has an absorption axis in the direction shown. That is, the first polarizing plate 9 and the second polarizing plate 10 are disposed so that the absorption axes 9a and 10a are orthogonal to each other.
- the liquid crystal panel 4 configured as described above is in a non-driven state in which no voltage is applied between the first and second transparent electrodes 5a and 6a.
- the liquid crystal molecules 8a in the liquid crystal layer 8 (liquid crystal cell) sandwiched between the second transparent electrodes 5a and 6a are brought into contact with the first and second glass substrates 5 by the action of the first and second alignment films 5b and 6b.
- And 6 are almost perpendicular to the light beam, and the polarization state of the light passing therethrough hardly changes.
- the light transmitted through the first polarizing plate 9 on the incident side (back side) of the liquid crystal panel 4 is almost directly incident on the second polarizing plate 10 on the output side (front side) of the liquid crystal panel 4 and almost there. Is absorbed, resulting in a dark display (black display).
- the first and second transparent electrodes 5a and 6a are applied to the first and second transparent electrodes 5a and 6a.
- the liquid crystal molecules 8a in the sandwiched liquid crystal layer 8 are in a direction substantially perpendicular to the electric field due to the negative dielectric anisotropy, that is, substantially parallel to the first and second glass substrates 5 and 6. Orients and changes the polarization state of light passing through it.
- the light transmitted through the first polarizing plate 9 on the incident side of the liquid crystal panel 4 changes the polarization state and exits the liquid crystal layer 8, so that the absorption by the second polarizing plate 10 on the outgoing side of the liquid crystal panel 4 is performed.
- the polarization component of the transmission axis orthogonal to the axis 10 increases, resulting in bright display (white display).
- the VA liquid crystal display devices 1, 2, and 3 have the transparent first provided with the first transparent electrode 5a of the first and second transparent electrodes 5a and 6a facing each other with a gap therebetween.
- the first glass substrate 5 and the transparent second glass substrate 6 provided with the second transparent electrode 6a have a negative dielectric anisotropy, and the orientation of the liquid crystal molecules 8a is the first and first When the voltage is applied between the first and second transparent electrodes 5a and 6a, the liquid crystal molecules 8a are aligned in the first and second directions.
- 1 polarizing plate 9 and the second glass group A vertical alignment type liquid crystal display in which a second polarizing plate 10 having an absorption axis 10a in a direction orthogonal to the absorption axis 9a of the first polarizing plate 9 is disposed on the side opposite to the side in contact with the liquid crystal layer 8 of FIG.
- the apparatus performs simple matrix driving (duty driving), but performs high duty driving in response to the demand for larger capacity and higher definition.
- FIG. 5 is a schematic diagram showing a configuration of an embodiment of a VA liquid crystal display device according to claim 1 of the present invention.
- the thickness direction retardation value of the liquid crystal layer 8 in the liquid crystal panel 4 is increased beyond the normal range (80 nm to 400 nm). That is, it is set in the range of 500 nm to 1600 nm.
- the retardation value in the thickness direction of the liquid crystal layer 8 is given by ⁇ n ⁇ d.
- a ⁇ n n e -n o
- n e is the long axis direction of the refractive index of the liquid crystal molecules 8a (extraordinary refractive index of)
- n o is the minor axis direction of the refractive index of the liquid crystal molecules 8a (ordinary of Refractive index).
- D is the thickness of the liquid crystal layer 8.
- the first retardation plate 13 is inserted between the first and second polarizing plates 9 and 10 in the liquid crystal panel 4.
- ⁇ d1 is set in a range of 220 nm to 1320 nm, and is perpendicular to the first and second glass substrates Which compensates for the birefringence of the liquid crystal layer 8.
- FIG. 6 is a schematic view showing a retardation plate insertion portion of the embodiment according to the VA type liquid crystal display device according to claims 1 to 3 of the present invention.
- (a), (b), (c), (d), (e), and (f) indicate the following retardation plate insertion locations in the liquid crystal panel 4.
- the VA liquid crystal display device 1 shown in FIG. 5 has a configuration in which one first retardation plate 13 is inserted in (a) of the liquid crystal panel 4 to compensate for the birefringence of the liquid crystal layer 8.
- the birefringence of the liquid crystal layer 8 can be compensated by inserting it in any of (A) to (F) instead of (A). Further, even if the two first retardation plates 13 are inserted into (a) and (f) or (b) and (e) or (c) and (d), the birefringence of the liquid crystal layer 8 is compensated.
- the retardation values in the thickness direction of the two first retardation plates 13 are set so that the sum thereof is 220 nm to 1320 nm.
- FIG. 7 is a schematic diagram showing a configuration of an embodiment of a VA liquid crystal display device according to claim 2 of the present invention.
- the VA liquid crystal display device 2 shown in FIG. 7 further includes a second phase difference between the first and second polarizing plates 9 and 10 in the liquid crystal panel 4 of the VA liquid crystal display device 1 shown in FIG. An additional plate 14 is inserted.
- ⁇ d2 is set in a range of 1 nm to 100 nm, and has optical axes parallel to the first and second glass substrates 5 and 6.
- one first retardation plate 13 is inserted into (a) and one second retardation plate 14 is inserted into (f) in the liquid crystal panel 4.
- the first phase difference plate 13 is inserted into (a), and the second phase difference plate 14 is inserted into (e), or one plate is added to (c).
- the first retardation plate 13 may be inserted, and one second retardation plate 14 may be inserted into (d).
- one first retardation plate 13 and one second retardation plate 14 may be inserted in any one of the positions (a) to (f) (the same insertion position) in a stacked state ( A) and (f) or (b) and (e) or (c) and (d) may be inserted in a stacked state, respectively.
- the first retardation plate 13 is disposed outside the second retardation plate 14. Further, the in-plane retardation values of the two second retardation plates 14 are set so that the sum thereof is 1 nm to 100 nm. Furthermore, the light incidence side of the liquid crystal layer 8 (A), (b), the second phase difference plate 14 which is inserted into (c) in-plane slow axis n x is the light incident side of the liquid crystal layer 8
- the second retardation plate 14 disposed so as to be orthogonal to the absorption axis 9a of the first polarizing plate 9 and inserted into (d), (e), (f) on the light emitting side of the liquid crystal layer 8 is , plane slow axis n x is arranged so as to be perpendicular to the absorption axis 10a of the second polarizing plate 10 on the light emission side of the liquid crystal layer 8.
- FIG. 8 is a schematic diagram showing a configuration of an embodiment of a VA liquid crystal display device according to claim 3 of the present invention.
- the VA type liquid crystal display device 3 shown in FIG. 8 has a third retardation plate 13 instead of the first retardation plate 13 and the second retardation plate 14 inserted in the liquid crystal panel 4 of the VA type liquid crystal display device 2 shown in FIG.
- the retardation plate 15 is inserted between the first and second polarizing plates 9 and 10 in the liquid crystal panel 4.
- the third retardation plate 15 is a biaxial retardation plate having a refractive index anisotropy that satisfies n x > n y > nz, and when the thickness is d3,
- ⁇ d3 is set in the range of 1 nm to 100 nm, and the retardation value in the thickness direction given by
- the VA type liquid crystal display device 3 shown in FIG. 8 shows a configuration in which one third retardation plate 15 is inserted into (a) in the liquid crystal panel 4, but (a) to (a) are replaced with (a). It may be inserted into any of the above. Further, it may be inserted in two places (a) and (f) or (b) and (e) or (c) and (d).
- the sum of the in-plane retardation values of the two third retardation plates 15 is 1 nm to 100 nm
- the retardation values in the thickness direction of the two third retardation plates 15 are: The total is set to be 220 nm to 1320 nm.
- the light incidence side of the liquid crystal layer 8 (A), (B), the third phase difference plate 15 which is inserted into (c) in-plane slow axis n x is the light incident side of the liquid crystal layer 8
- the third retardation plate 15 is disposed so as to be orthogonal to the absorption axis 9a of the first polarizing plate 9 and is inserted into (d), (e), (f) on the light emission side of the liquid crystal layer 8.
- plane slow axis n x is arranged so as to be perpendicular to the absorption axis 10a of the second polarizing plate 10 on the light emission side of the liquid crystal layer 8.
- the VA liquid crystal display device 1 Compared with the optical compensation of the liquid crystal panel 4 by using one or a plurality of the first retardation plates 13 in the VA liquid crystal display device 1 for the VA liquid crystal display devices 1, 2 and 3, the VA liquid crystal display device. 3, the combination of the two third retardation plates 15 and the combination of the first retardation plate 13 and the second retardation plate 14 of the VA liquid crystal display device 2 are highly effective.
- FIG. 9 is a schematic diagram showing a configuration of an embodiment of such a VA liquid crystal display device according to a modified example (claim 1 + claim 3) of the present invention.
- the VA liquid crystal display device 40 shown in FIG. 9 is further illustrated in FIG. 8 between the first and second polarizing plates 9 and 10 in the liquid crystal panel 4 of the VA liquid crystal display device 1 shown in FIG.
- a third retardation plate 15 is additionally inserted, or instead of the second retardation plate 14 inserted into the liquid crystal panel 4 of the VA liquid crystal display device 2 shown in FIG. 7, the third retardation plate 15 shown in FIG.
- the retardation plate 15 is inserted between the first and second polarizing plates 9 and 10 in the liquid crystal panel 4, or the first and second liquid crystal panels 4 in the VA liquid crystal display device 3 shown in FIG.
- the first retardation plate 13 shown in FIG. 5 is additionally inserted between the polarizing plates 9 and 10.
- one first retardation plate 13 is inserted into (a) and one third retardation plate 15 is inserted into (f) in the liquid crystal panel 4.
- the configuration is shown.
- the insertion positions of the first and third retardation plates 13 and 15, the direction of the slow axis, the retardation value, and the like are appropriately set following the VA liquid crystal display devices 1, 2, and 3.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Polarising Elements (AREA)
Abstract
Description
4 液晶パネル
4a パネル本体
5 第1のガラス基板
5a 第1の透明電極
6 第2のガラス基板
6a 第2の透明電極
8 液晶層
8a 液晶分子
9 第1の偏光板
9a 吸収軸
10 第2の偏光板
10a 吸収軸
13 第1の位相差板
14 第2の位相差板
15 第3の位相差板
(ア):第1のガラス基板5と第1の偏光板9の間
(イ):第1のガラス基板5と第1の透明電極5aの間
(ウ):第1の透明電極5aと第1の配向膜5bの間
(エ):第2の透明電極6aと第2の配向膜6bの間
(オ):第2のガラス基板6と第2の透明電極6aの間
(カ):第2のガラス基板6と第2の偏光板10の間
すなわち、(ア)~(ウ)は液晶層8の光入射側の位相差板挿入箇所、(エ)~(カ)は液晶層8の光出射側の位相差板挿入箇所となる。また、(ア)および(カ)はパネル本体4a外の位相差板挿入箇所、(イ)~(オ)はパネル本体4a内の位相差板挿入箇所となる。
Claims (3)
- ギャップを隔てて対向する第1および第2の透明電極の前記第1の透明電極を設けた透明な第1のガラス基板および前記第2の透明電極を設けた透明な第2のガラス基板の間に、負の誘電率異方性を有し、液晶分子の配向が前記第1および第2のガラス基板に対して略垂直の液晶からなり、前記第1および第2の透明電極間に電圧を印加すると、前記液晶分子の配向が前記第1および第2のガラス基板に対して略平行になる液晶層を挟持し、
前記第1のガラス基板の前記液晶層に接する側とは反対側に、所定方向に吸収軸を有する第1の偏光板を配置するとともに、前記第2のガラス基板の前記液晶層に接する側とは反対側に、前記第1の偏光板の吸収軸と直交する方向に吸収軸を有する第2の偏光板を配置する垂直配向型液晶表示装置であって、
前記液晶分子の長軸方向の屈折率をne、短軸方向の屈折率をno、ne-no=Δnとし、前記液晶層の厚さをdとするとき、Δn・dで与えられる前記液晶層の厚さ方向の位相差値を500nm~1600nmの範囲に設定するとともに、
前記第1および第2の偏光板の間に第1の位相差板を挿入し、
該第1の位相差板は、面内の最大屈折率を示す遅相軸方向の屈折率をnx、面内の前記遅相軸方向と直交する進相軸方向の屈折率をny、厚さ方向の屈折率をnzとするとき、nx=ny>nzとなる負の屈折率異方性を有する一軸性位相差板であって、
厚さをd1とするとき、|(nx+ny)/2-nz|・d1で与えられる厚さ方向の位相差値が220nm~1320nmの範囲に設定され、
前記第1および第2のガラス基板に垂直な光軸を有することを特徴とする垂直配向型液晶表示装置。 - 前記第1および第2の偏光板の間に第2の位相差板を追加挿入し、
該第2の位相差板は、nx>ny=nzとなる正の屈折率異方性を有する一軸性位相差板であって、
厚さをd2とするとき、|(nx-ny)|・d2で与えられる面内の位相差値が1nm~100nmの範囲に設定され、
前記第1および第2のガラス基板に平行な光軸を有することを特徴とする請求の範囲1記載の垂直配向型液晶表示装置。 - 前記第1および第2の位相差板の代わりに前記第1および第2の偏光板の間に第3の位相差板を挿入し、
該第3の位相差板は、nx>ny>nzとなる屈折率異方性を有する二軸性位相差板であって、
厚さをd3とするとき、|(nx-ny)|・d3で与えられる面内の位相差値が1nm~100nmの範囲に設定され、|(nx+ny)/2-nz|・d3で与えられる厚さ方向の位相差値が220nm~1320nmの範囲に設定され、
前記第1および第2のガラス基板に平行な面内の遅相軸を有することを特徴とする請求の範囲2に記載の垂直配向型液晶表示装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980130225.6A CN102112910B (zh) | 2008-08-06 | 2009-02-09 | 垂直取向型液晶显示装置 |
EP09804771A EP2322982A4 (en) | 2008-08-06 | 2009-02-09 | VERTICAL ALIGNMENT LIQUID CRYSTAL DISPLAY DEVICE |
AU2009278568A AU2009278568B2 (en) | 2008-08-06 | 2009-02-09 | Vertically aligned liquid crystal display device |
US13/057,590 US8390768B2 (en) | 2008-08-06 | 2009-02-09 | Vertically aligned liquid crystal display device |
MX2011001272A MX2011001272A (es) | 2008-08-06 | 2009-02-09 | Dispositivo de pantalla de cristal liquido alineada verticalmente. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-203129 | 2008-08-06 | ||
JP2008203129A JP2010039281A (ja) | 2008-08-06 | 2008-08-06 | 垂直配向型液晶表示装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010016284A1 true WO2010016284A1 (ja) | 2010-02-11 |
Family
ID=41663511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/052152 WO2010016284A1 (ja) | 2008-08-06 | 2009-02-09 | 垂直配向型液晶表示装置 |
Country Status (10)
Country | Link |
---|---|
US (1) | US8390768B2 (ja) |
EP (1) | EP2322982A4 (ja) |
JP (1) | JP2010039281A (ja) |
KR (1) | KR20110025872A (ja) |
CN (1) | CN102112910B (ja) |
AU (1) | AU2009278568B2 (ja) |
MX (1) | MX2011001272A (ja) |
MY (1) | MY154151A (ja) |
TW (1) | TW201007270A (ja) |
WO (1) | WO2010016284A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017198774A (ja) * | 2016-04-26 | 2017-11-02 | スタンレー電気株式会社 | 液晶表示装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010039281A (ja) * | 2008-08-06 | 2010-02-18 | Hosiden Corp | 垂直配向型液晶表示装置 |
CN103105691A (zh) * | 2013-01-30 | 2013-05-15 | 江苏亿成光电科技有限公司 | 一种彩色垂直排列液晶显示器 |
US9722566B1 (en) * | 2013-10-31 | 2017-08-01 | Board Of Trustees Of The University Of Alabama, For And On Behalf Of The University Of Alabama In Huntsville | Systems and methods for tuning resonators |
KR20220014395A (ko) * | 2020-07-24 | 2022-02-07 | 주식회사 엘지화학 | 광변조 디바이스 |
KR102619980B1 (ko) * | 2020-07-28 | 2024-01-02 | 주식회사 엘지화학 | 광변조 디바이스 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10153802A (ja) * | 1996-09-30 | 1998-06-09 | Fujitsu Ltd | 液晶表示装置 |
JPH10197858A (ja) | 1997-01-13 | 1998-07-31 | Stanley Electric Co Ltd | 液晶表示素子とその製造方法 |
JP2007304155A (ja) * | 2006-05-09 | 2007-11-22 | Stanley Electric Co Ltd | 液晶表示装置 |
JP2008116489A (ja) * | 2006-10-31 | 2008-05-22 | Optrex Corp | 液晶表示装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6642981B1 (en) * | 1996-09-30 | 2003-11-04 | Fujitsu Display Technologies Corporation | Liquid crystal display device operating in a vertically aligned mode including at least one retardation film |
EP2085815B1 (en) * | 1997-06-12 | 2013-03-13 | Sharp Kabushiki Kaisha | Vertically aligned (VA) liquid-crystal display device |
JP4613079B2 (ja) * | 2005-03-04 | 2011-01-12 | 富士フイルム株式会社 | 液晶組成物、位相差板および楕円偏光板 |
US8269929B2 (en) * | 2006-09-28 | 2012-09-18 | Stanley Electric Co., Ltd. | Vertically aligned liquid crystal display device with visual angle compensation |
JP2008203382A (ja) * | 2007-02-19 | 2008-09-04 | Hitachi Displays Ltd | 液晶表示装置 |
JP2010039281A (ja) * | 2008-08-06 | 2010-02-18 | Hosiden Corp | 垂直配向型液晶表示装置 |
-
2008
- 2008-08-06 JP JP2008203129A patent/JP2010039281A/ja active Pending
-
2009
- 2009-02-09 MX MX2011001272A patent/MX2011001272A/es active IP Right Grant
- 2009-02-09 MY MYPI2011000411A patent/MY154151A/en unknown
- 2009-02-09 KR KR1020117002515A patent/KR20110025872A/ko not_active Application Discontinuation
- 2009-02-09 US US13/057,590 patent/US8390768B2/en not_active Expired - Fee Related
- 2009-02-09 AU AU2009278568A patent/AU2009278568B2/en not_active Ceased
- 2009-02-09 CN CN200980130225.6A patent/CN102112910B/zh not_active Expired - Fee Related
- 2009-02-09 WO PCT/JP2009/052152 patent/WO2010016284A1/ja active Application Filing
- 2009-02-09 EP EP09804771A patent/EP2322982A4/en not_active Withdrawn
- 2009-04-13 TW TW098112184A patent/TW201007270A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10153802A (ja) * | 1996-09-30 | 1998-06-09 | Fujitsu Ltd | 液晶表示装置 |
JPH10197858A (ja) | 1997-01-13 | 1998-07-31 | Stanley Electric Co Ltd | 液晶表示素子とその製造方法 |
JP2007304155A (ja) * | 2006-05-09 | 2007-11-22 | Stanley Electric Co Ltd | 液晶表示装置 |
JP2008116489A (ja) * | 2006-10-31 | 2008-05-22 | Optrex Corp | 液晶表示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2322982A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017198774A (ja) * | 2016-04-26 | 2017-11-02 | スタンレー電気株式会社 | 液晶表示装置 |
Also Published As
Publication number | Publication date |
---|---|
TW201007270A (en) | 2010-02-16 |
US20110134375A1 (en) | 2011-06-09 |
US8390768B2 (en) | 2013-03-05 |
EP2322982A4 (en) | 2012-08-22 |
JP2010039281A (ja) | 2010-02-18 |
MY154151A (en) | 2015-05-15 |
EP2322982A1 (en) | 2011-05-18 |
AU2009278568A1 (en) | 2010-02-11 |
CN102112910B (zh) | 2014-06-11 |
KR20110025872A (ko) | 2011-03-11 |
CN102112910A (zh) | 2011-06-29 |
AU2009278568B2 (en) | 2012-08-16 |
MX2011001272A (es) | 2011-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018221413A1 (ja) | 表示装置 | |
JP4894036B2 (ja) | 液晶表示装置 | |
US20080049178A1 (en) | Liquid crystal display device | |
JP4899153B2 (ja) | 液晶表示装置 | |
JPH11271759A (ja) | 液晶表示装置 | |
WO2011030596A1 (ja) | 液晶表示装置 | |
WO2010016284A1 (ja) | 垂直配向型液晶表示装置 | |
JP4705330B2 (ja) | 補償フィルムを備えた液晶表示装置 | |
US20090002609A1 (en) | Liquid crystal display device | |
JP5301927B2 (ja) | 液晶表示素子 | |
KR100762034B1 (ko) | Ocb 모드 액정표시장치 | |
KR100672656B1 (ko) | 액정표시장치 | |
JP2009204851A (ja) | 液晶表示装置 | |
WO2012090839A1 (ja) | 液晶パネル、及び、液晶ディスプレイ | |
KR20080059832A (ko) | 표시장치 | |
KR101152548B1 (ko) | 시야각이 향상되는 액정표시소자 | |
US20080291372A1 (en) | Liquid crystal display device | |
US20140307188A1 (en) | Display device | |
JP4686164B2 (ja) | 液晶表示装置 | |
JP2009003432A (ja) | 液晶表示装置 | |
JP4824443B2 (ja) | 液晶表示装置 | |
JP2007072148A (ja) | 液晶装置および電子機器 | |
JP5072520B2 (ja) | 液晶表示装置 | |
JP2009075549A (ja) | 液晶表示装置 | |
JP3649986B2 (ja) | 液晶表示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980130225.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09804771 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009278568 Country of ref document: AU |
|
ENP | Entry into the national phase |
Ref document number: 20117002515 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2011/001272 Country of ref document: MX |
|
ENP | Entry into the national phase |
Ref document number: 2009278568 Country of ref document: AU Date of ref document: 20090209 Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13057590 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009804771 Country of ref document: EP |