WO2009157271A1 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
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- WO2009157271A1 WO2009157271A1 PCT/JP2009/059899 JP2009059899W WO2009157271A1 WO 2009157271 A1 WO2009157271 A1 WO 2009157271A1 JP 2009059899 W JP2009059899 W JP 2009059899W WO 2009157271 A1 WO2009157271 A1 WO 2009157271A1
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- liquid crystal
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- crystal display
- display device
- comb
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
-
- 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
- G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
-
- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/124—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode interdigital
Definitions
- the present invention relates to a liquid crystal display device. More specifically, the present invention relates to a liquid crystal display device suitable for a display method in which transmission of light is controlled by bending a liquid crystal layer by applying a voltage.
- Liquid crystal display devices are characterized by thinness, light weight, and low power consumption, and are widely used in various fields. And the display performance has progressed remarkably with the passage of time, and now it has surpassed CRT (Cathode Ray Tube).
- CRT Cathode Ray Tube
- the display method of the liquid crystal display device is determined by how the liquid crystals are arranged in the cell.
- a display method of a liquid crystal display device for example, a TN (Twisted Nematic) mode, an MVA (Multi-domain Vertical Alignment) mode, an IPS (In-plane Switching) mode, an OCB (Optically self-conferencing mode), and the like.
- Various display methods are known.
- Liquid crystal display devices using such a display method are produced in large quantities.
- TN mode liquid crystal display devices are widely used.
- the TN mode liquid crystal display device has room for improvement in that the response is slow and the viewing angle is narrow.
- a slit is formed in the pixel electrode of the active matrix substrate, and a protrusion (rib) for controlling the alignment of liquid crystal molecules is formed in the counter electrode of the counter substrate, and a fringe field (Fringe Field) formed by these.
- rib protrusion
- Fringe Field fringe field
- the MVA mode is a vertical alignment mode, it has a feature that a high contrast can be obtained as compared with the TN, IPS, and OCB modes.
- the manufacturing process is complicated and the response is slow as in the TN mode.
- the IPS mode is a display method that realizes a wide viewing angle with a simpler configuration and switches liquid crystal molecules in the plane, so that the viewing angle is very wide (see, for example, Non-Patent Documents 3 and 4). .
- the IPS mode also has room for improvement in that the response is slow like the TN mode and the MVA mode. Moreover, it is not suitable for portable devices and in-vehicle devices that require high speed at low temperatures.
- the OCB mode is the only display method that can achieve a high-speed response with a simple configuration in which a nematic liquid crystal is sandwiched between two substrates aligned in parallel (for example, Non-patent documents 5 and 6). For this reason, the OCB mode is attracting particular attention in in-vehicle applications where low-temperature response characteristics are a problem.
- the OCB mode exhibits high-speed response, it requires a transition operation from the splay alignment, which is the initial alignment, to the bend alignment during driving when the power is turned on. Since a drive circuit is required, a cost increase factor is inherent. In addition, there is room for further improvement in that the viewing angle characteristics are inferior to those of the MVA mode and the IPS mode.
- a liquid crystal panel and a liquid crystal display device that can simultaneously realize all of high-speed response, wide viewing angle characteristics, and high contrast characteristics have not yet been invented. Also, a liquid crystal panel and a liquid crystal display device that do not require an initial bend transition operation and can realize practical bend alignment have not been invented yet.
- the present invention has been made in view of the above situation, and can achieve excellent wide viewing angle characteristics and high-speed response at the same time, and can perform display by a display method that does not require an initial bend transition operation.
- An object of the present invention is to provide a liquid crystal display device that can be used.
- the inventors of the present invention have made various studies on liquid crystal display devices that can simultaneously realize excellent wide viewing angle characteristics and high-speed response, and can perform display by a display method that does not require an initial bend transition operation.
- a p-type nematic liquid crystal was used as a liquid crystal material, and attention was paid to a display method that defines the orientation direction of liquid crystal molecules by driving with a lateral electric field while maintaining high contrast by vertical alignment.
- the electrode width L and the electrode interval S of the comb-shaped electrodes satisfy the relationship of (S + 1.7) / (S + L) ⁇ 0.7, or the first region and the comb-shaped electrodes are included in one pixel region.
- the electrode width L and the ratio S / L of the electrode spacing S are provided with a second region different from the first region, so that the wide viewing angle characteristics equivalent to those of the MVA mode and the IPS mode and the OCB mode, Alternatively, it has been found that a high-speed response higher than that can be realized at the same time and that a novel display method that does not require an initial bend transition operation can be realized, and that the above problems can be solved brilliantly. Has reached
- the present invention is a liquid crystal display device including a p-type nematic liquid crystal sandwiched between two substrates at least one of which is transparent, and the p-type nematic liquid crystal is in contact with the two substrates when no voltage is applied. At least one of the two substrates has a comb-like electrode, and the electrode width L and the electrode spacing S of the comb-like electrode are (S + 1.7) / (S + L). )
- a liquid crystal display device satisfying a relationship of ⁇ 0.7 hereinafter also referred to as “first liquid crystal display device of the present invention”).
- the configuration of the first liquid crystal display device of the present invention is not particularly limited as long as such components are essential and may or may not include other components. It is not something.
- the present invention is also a liquid crystal display device including a p-type nematic liquid crystal sandwiched between two transparent substrates, at least one of which is a surface of the two substrate surfaces when no voltage is applied. At least one of the two substrates has a comb-like electrode, and the liquid crystal display device includes a first region and the comb-like electrode in one pixel region.
- This is a liquid crystal display device (hereinafter also referred to as “second liquid crystal display device of the present invention”) having a second region in which the ratio S / L of the electrode width L and the electrode spacing S is different from the first region.
- the configuration of the second liquid crystal display device of the present invention is not particularly limited as long as such components are formed as essential, and may or may not include other components. It is not something.
- the term “vertical” does not necessarily have to be strictly vertical, and includes those that can be substantially regarded as vertical in view of the effects of the present invention. More specifically, the pretilt angle in the liquid crystal display device is preferably 88 ° or more. Further, an error that may occur in the manufacturing process may be included.
- the first and second liquid crystal display devices of the present invention may perform monochrome display or color display.
- pixels display images
- the first liquid crystal display device of the present invention has a ratio S / L of the first region, the electrode width L, and the electrode interval S in one pixel region. It is preferable to have a second region different from the first region.
- the number of regions having different S / L ratios arranged in the same pixel region is not particularly limited, and there are three different S / L ratios.
- the above regions may be formed.
- the first and second liquid crystal display devices of the present invention may have a plurality of regions having different ratios S / L of the electrode width L and the electrode spacing S in one pixel region. Good.
- the electrode width L and the electrode interval S are (S + 1.7) / (S + L) ⁇ 0.7 (below) , which is also referred to as formula (1)).
- first liquid crystal display device of the present invention and the second liquid crystal display device of the present invention may be combined.
- the electrode width L and the electrode interval S satisfy a relationship of (S + 1.7) / (S + L) ⁇ 0.8.
- the electrode width L and the electrode interval S are also referred to as (S + 1.7) / (S + L) ⁇ 0.9 (hereinafter also referred to as Expression (2)). It is further preferable to satisfy the relationship of Thereby, not only the reduction of the additional members but also the number of the light sources themselves or the luminance of the light sources themselves can be reduced to achieve the same luminance as the current MVA mode.
- At least one of the electrode width L and the electrode interval S is different from the first region and the second region.
- One or more regions may be further included.
- the opening area of the first area or the second area occupies 50% or more of the pixel opening area.
- the first and second liquid crystal display devices of the present invention have a plurality of regions in which the electrode width L and the ratio S / L of the electrode spacing S are different from each other in one pixel region.
- the opening area of one of the plurality of areas may occupy 50% or more of the pixel opening area.
- the electrode width L and the electrode interval S are set to S / L ⁇ 3.75 (hereinafter referred to as equation (3)). It is preferable to satisfy the relationship.
- the electrode spacing S is preferably 3 ⁇ m (more preferably 3.5 ⁇ m) or more.
- the electrode interval S is preferably 10 ⁇ m (more preferably 8.5 ⁇ m) or less.
- the electrode width L is preferably approximately 7 ⁇ m or less.
- the electrode width L is more preferably about 5 ⁇ m or less.
- the electrode width L is preferably 4 ⁇ m (more preferably 3.5 ⁇ m) or less from the viewpoint of more reliably realizing excellent display characteristics, in particular, high-speed response and high transmittance. That is, the electrode width L preferably satisfies the relationship of L ⁇ 4 ⁇ m (hereinafter also referred to as formula (4)).
- the electrode width L is preferably 2 ⁇ m (more preferably 2.5 ⁇ m) or more. That is, the electrode width L preferably satisfies the relationship of L ⁇ 2 ⁇ m (hereinafter also referred to as Expression (5)).
- the comb-like electrode may include a common electrode group and a pixel electrode group, and the common electrode group and the pixel electrode group may be disposed via an insulating layer.
- the dielectric anisotropy ⁇ of the p-type nematic liquid crystal is preferably 10 or more (more preferably 15 or more).
- an excellent wide viewing angle characteristic and high-speed response can be realized at the same time, and display can be performed by a display method that does not require an initial bend transition operation. More specifically, wide viewing angle characteristics equivalent to those of the MVA mode and the IPS mode are obtained when the electrode width L and the electrode spacing S of the comb-like electrodes satisfy the relationship of (S + 1.7) / (S + L) ⁇ 0.7. In addition, high-speed response comparable to or higher than the OCB mode, high transmittance, and high contrast can be realized at the same time.
- first region and second region having different electrode width L and electrode spacing S ratio S / L in one pixel region, it is equivalent to MVA mode or IPS mode.
- Wide viewing angle characteristics, high-speed response comparable to or higher than that of the OCB mode, and improvement of low gradation characteristics can be realized at the same time.
- FIG. 1 is a schematic perspective view illustrating a basic configuration of a liquid crystal display device according to Embodiment 1.
- FIG. 3 is a cross-sectional view showing an example of a potential distribution in a cell when a voltage is applied to the liquid crystal display device of Embodiment 1.
- FIG. 3 is a cross-sectional view illustrating an example of a liquid crystal alignment distribution when a voltage is applied to the liquid crystal display device of Embodiment 1.
- FIG. 3 is a schematic cross-sectional view showing a basic configuration of a liquid crystal display element of Example 1.
- FIG. 4 is a plan view for explaining a transmission axis direction and an electric field application direction in the liquid crystal display device of Example 1.
- 6 is a graph showing the relationship between the electrode width and electrode interval and the maximum transmittance in the liquid crystal display device of Example 1.
- 6 is a graph showing temperature dependence of response characteristics of the liquid crystal display device of Example 1.
- FIG. 3 is a schematic cross-sectional view for explaining high-speed response of the liquid crystal display device of Embodiment 1.
- 6 is a schematic cross-sectional view showing a basic configuration of a liquid crystal display device of Example 3.
- FIG. 10 is a graph showing voltage-transmittance characteristics of the liquid crystal display device of Example 4.
- 10 is a schematic cross-sectional view showing a basic configuration of an MVA mode liquid crystal display element of Comparative Example 2.
- FIG. 10 is a plan view for explaining a transmission axis direction and an electric field application direction in the liquid crystal display device of Comparative Example 2.
- FIG. 10 is a cross-sectional schematic diagram for demonstrating the liquid crystal orientation of the liquid crystal display element of the MVA mode of the comparative example 2 at the time of an electric field application. It is a graph which shows the suitable range of the electrode width L and the electrode space
- the liquid crystal display device of the present embodiment forms a distribution of electric field strength in a cell by applying an electric field, and realizes a liquid crystal bend alignment.
- the liquid crystal display device according to the present embodiment applies an electric field in a direction transverse to the substrate surface to vertically aligned p-type nematic liquid crystal (nematic liquid crystal having positive dielectric anisotropy).
- the bend-like arrangement is formed by applying an electric field.
- FIG. 1 is a schematic perspective view illustrating a basic configuration of the liquid crystal display device according to the first embodiment. Vertical alignment films 13 and 14 are disposed on the two transparent substrates 11 and 12, and the p-type nematic liquid crystal (liquid crystal molecules 15) exhibits homeotropic alignment when no voltage is applied.
- the liquid crystal molecules 15 in the vicinity of the vertical alignment films 13 and 14 are aligned so that the major axis is substantially perpendicular to the substrates 11 and 12 when no voltage is applied.
- the pretilt angle of the liquid crystal molecules 15 need not be strictly controlled as long as it is substantially vertical, but is preferably 88 ° or more from the viewpoint of obtaining a high contrast ratio.
- the substrates 11 and 12 may be the same substrate as a transparent substrate made of glass or plastic used in a general liquid crystal display device.
- the light transmittance is 75% or more (more preferably). 90% or more), and haze is preferably 5% or less (more preferably 3% or less).
- the common electrode group includes a plurality of common electrodes parallel to each other, and the common electrodes are connected to each other in the peripheral region of the pixel (or picture element).
- a common signal (common signal) is supplied to each pixel (or picture element) to the common electrode group.
- the pixel electrode group also includes a plurality of pixel electrodes parallel to each other, and each pixel electrode is connected to each other in a peripheral region of the pixel (or picture element).
- the pixel electrode group is provided corresponding to each pixel (or picture element), and an image signal is supplied to the pixel electrode group for each pixel (or picture element) at a predetermined timing. Further, polarizing plates 17 and 18 are disposed on the outer main surfaces of the two substrates 11 and 12.
- Patent Document 1 Such a cell configuration is disclosed in Patent Document 1, and a bend-shaped electric field is formed by applying an electric field, and two domains whose director directions are different from each other by 180 ° are formed. Is obtained in Patent Documents 3 and 4.
- Patent Documents 1 to 4 have not been put into practical use due to problems such as high driving voltage and low cell transmittance while having excellent viewing angle characteristics. .
- the degree of the bend orientation can be controlled by setting the electrode width and the distance between electrodes (electrode spacing) to appropriate conditions. As a result, a high light transmittance could be obtained for the first time with a practical driving voltage.
- the degree of bend alignment can be arbitrarily controlled as compared with the conventional case, high-speed response characteristics can be achieved using the flow effect in the same manner as the OCB mode. Value is extremely high.
- the splay alignment transitions to the bend alignment at a voltage slightly higher than the critical voltage.
- the bend alignment at this time shows the maximum curvature, and gradation display is performed between the bend alignment and a gentle bend alignment when a high voltage is applied.
- gradation display is performed between a bend alignment with a large curvature when a high voltage is applied and a vertical alignment when no voltage is applied. The maximum curvature at this time depends on the applied voltage, and increases as the electric field strength increases.
- the maximum curvature when a high voltage is applied can be arbitrarily controlled by the electrode width and the distance between the electrodes, the maximum curvature when a high voltage is applied can be set to the OCB mode or higher, and a high-speed response higher than the OCB mode is achieved. be able to.
- the curvature here means “the degree of bending” and is not physically defined.
- the present invention can achieve a more stable bend alignment state by reducing the surface anchoring energy of the alignment film.
- FIG. 2 shows an equipotential curve in the cell when a voltage of 7 V is applied.
- the liquid crystal molecules are arranged according to the electric field strength distribution and the binding force from the interface.
- the state at this time is shown in FIG.
- the liquid crystal molecules continuously change from homeotropic alignment to bend-like alignment. That is, in normal driving, the liquid crystal layer always exhibits a bend-like arrangement, and a high-speed response is possible with a response between different gradations.
- FIG. 3 shows that the degree of bend deformation is larger in the region where no electrode exists than on the electrode (comb-like electrode 16), and the light modulation rate is larger.
- the present invention is based on the finding that the degree of this bend-like arrangement can be controlled by optimizing the panel configuration. According to the present invention, the degree of bend can be increased and high light transmittance can be obtained.
- the liquid crystal display device of this embodiment as in the OCB mode, when the liquid crystal molecules try to move, the flow of the liquid crystal molecules works in the direction to assist it, so that a high-speed response is possible. Become. Examples will be described below, and the present invention will be described in more detail with reference to the drawings.
- FIG. 4 is a schematic cross-sectional view showing the basic configuration of the liquid crystal display element of Example 1.
- a plurality of liquid crystal display elements having various electrode widths L and electrode intervals S were prepared.
- an alignment film coating JALS-204 (5 wt.%, ⁇ -butyrolactone, manufactured by JSR Co., Ltd.) is placed on a glass substrate 42 having an ITO comb-like electrode (comb-like electrode) 41 set to an electrode width L and an electrode interval S. Solution) was applied by spin coating, followed by baking at 200 ° C. for 2 hours to form an alignment film 44. At this time, the film thickness of the alignment film 44 was 60 nm.
- an alignment film 45 having a film thickness of 60 nm was formed on the glass substrate 43 using the same alignment film paint as the alignment film 44. Thereafter, resin beads 46 (Micropearl SP) having a diameter of 4 ⁇ m manufactured by Sekisui Chemical Co., Ltd. are dispersed on the substrate 42, and a sealing resin 47 (Struct Bond XN-21-S) manufactured by Mitsui Toatsu Chemical Co., Ltd. is applied on the substrate 43. Was printed and these substrates were bonded to each other and baked at 250 ° C. for 3 hours to prepare a liquid crystal cell.
- resin beads 46 Moropearl SP
- a sealing resin 47 Struct Bond XN-21-S
- the relationship between the direction of electric field application at this time and the axial orientation of the polarizing plates 49 and 50 is shown in FIG. As described above, the polarizing plates 49 and 50 are arranged in crossed Nicols, and an electric field is applied in a direction that bisects the angle formed by the transmission axis directions of the polarizing plates 49 and 50.
- FIG. 6 shows the maximum transmittance at room temperature (25 ° C.) when a 30 Hz rectangular wave of 0 V to 20 V is applied to each liquid crystal display element.
- the horizontal axis represents the ratio of the region contributing to the transmittance in the cell.
- the value of 1.7 in the equation is an experimental value, and represents that the region of 1.7 ⁇ m from the electrode end contributes to the improvement in transmittance.
- the numbers in the figure represent electrode width L / electrode spacing S.
- the electrode width L is the width (the length in the short direction) at the portion where the common electrode and the pixel electrode are arranged to face each other
- the electrode interval S is the portion where the common electrode and the pixel electrode are arranged to face each other.
- FIG. 6 shows that the larger the value of (S + 1.7) / (S + L), the higher the maximum transmittance.
- the current MVA mode has a mode transmittance of about 80%, but the transmittance of the liquid crystal layer is 50% or less due to loss of light amount due to the rib region.
- the product is a product of pixel aperture ratio, color filter transmittance, and polarizing plate transmittance, so that the panel transmittance is only 4% to 5%.
- the display method of the present invention does not require ribs, a practical display method can be obtained if the light transmittance in the liquid crystal layer is 50 to 55% or more.
- the mode transmittance is about 50% or more
- the panel transmittance is about the same as that of the current display mode (for example, MVA mode), and a brighter (lower power consumption) liquid crystal display device can be realized.
- the mode transmittance is less than 50%, since the panel structure is simple, the manufacturing cost is low and its practical value is very large.
- FIG. 6 shows that the transmittance can be increased by increasing the value of (S + 1.7) / (S + L) without widening the electrode spacing S, which was first revealed by the present invention.
- FIG. 7 shows the temperature dependence of the response characteristics when the electrode width L is 4 ⁇ m and the electrode interval S is 4 ⁇ m.
- the present invention shows a high-speed response even at low temperatures, and its practical value is extremely large.
- the reason why the liquid crystal display element included in the liquid crystal display device of the present invention exhibits a high-speed response is that liquid crystal molecules rotate and bend when a voltage is applied.
- a voltage is applied, as shown in FIG. 8, a flow (flow in the direction indicated by an arrow in FIG. 8) occurs in the liquid crystal layer, but the disclination occurs in the approximate center between adjacent common electrodes and pixel electrodes.
- the line (dark line) is symmetric and reverse rotation occurs, and torque in the same direction acts near the disclination line. Therefore, unlike the TN mode and the MVA mode, the flow in the liquid crystal layer does not interfere with each other's movement, so that a high-speed response can be shown as in the OCB mode.
- Such high-speed response corresponds to the degree of bending (curvature).
- the degree of this bend depends on the physical properties of the liquid crystal material (in particular, the dielectric anisotropy ⁇ and the elastic constant), but it also depends on the electrode width L, electrode spacing S, liquid crystal layer thickness (cell gap), etc. Change. That is, in the present invention, the degree of bend can be arbitrarily controlled by the distribution of the electric field strength in the cell, and a high-speed response higher than the OCB mode can be achieved.
- the transmittance increases as the electrode spacing S increases, but the effect gradually saturates as the electrode spacing S increases. Specifically, as the electrode spacing S increases, the driving voltage increases and the response characteristics also deteriorate. Therefore, it is not a good idea to increase the electrode spacing S more than necessary.
- the transmittance is a value at an applied voltage of 6.5V.
- Example 2 A liquid crystal cell having the same basic configuration as that shown in FIG. 4, an electrode width L of 4 ⁇ m, an electrode interval S of 4 ⁇ m, and a cell gap of 4 ⁇ m was manufactured by the following method.
- a glass substrate 42 having an ITO comb-like electrode (comb electrode) 41 is mixed with 0.01 mol / l chloroform-NMP of a silane coupling material represented by the chemical formula CF 3- (CF 2 ) 17 -SiCl 3.
- an alignment film 45 was formed on the glass substrate 43 using the same alignment film material as that of the alignment film 44. Thereafter, resin beads 46 (Micropearl SP) having a diameter of 4 ⁇ m manufactured by Sekisui Chemical Co., Ltd. are dispersed on the substrate 42, and a sealing resin 47 (Struct Bond XN-21-S) manufactured by Mitsui Toatsu Chemical Co., Ltd. is applied on the substrate 43. Was printed and these substrates were bonded to each other and baked at 250 ° C. for 3 hours to prepare a liquid crystal cell.
- resin beads 46 Moropearl SP
- a sealing resin 47 Struct Bond XN-21-S
- the relationship between the direction of electric field application at this time and the axial orientation of the polarizing plates 49 and 50 is the same as in the case of Example 1 shown in FIG.
- the maximum transmittance of the liquid crystal display element of Example 2 is 53%, which enables brighter display than the transmittance (42%) of the MVA mode having a rib structure, and its practical value is extremely high.
- the rise response time when a voltage of 7 V was applied and the response time when the voltage was turned off after application of 7 V were 20 ms and 25 ms, respectively, which were insufficient response characteristics.
- k11, k22, and k33 are the elastic constants of the spray, twist, and vent, respectively.
- Example 3 In the same manner as in Example 1, the liquid crystal display elements A to E of Example 3 having different electrode widths L and electrode intervals S and having a liquid crystal layer thickness of 4 ⁇ m were prepared.
- FIG. 9 is a schematic cross-sectional view showing the basic configuration of the liquid crystal display element of Example 3.
- a SiNx film (thickness: 0.2 ⁇ m) was formed as an insulating layer between the electrode groups by vacuum deposition.
- a method for manufacturing the liquid crystal display elements A to E will be described below.
- the SiNx film 93 is vacuum-deposited, and the pixel electrode group 94 is further formed thereon.
- the glass substrate 92 having the comb-like electrode made of ITO (comb-like electrode) produced in this manner is used as a silane coupling material represented by the chemical formula CF 3 — (CF 2 ) 17 —SiCl 3.
- an alignment film 97 was formed on the glass substrate 96 using the same alignment film material as that of the alignment film 95. Thereafter, resin beads 98 (Micropearl SP) having a diameter of 4 ⁇ m made by Sekisui Chemical Co., Ltd. are dispersed on the substrate 92, and a seal resin 99 made by Mitsui Toatsu Chemical Co., Ltd. (Struct Bond XN-21-S) is made on the substrate 96. Was printed and these substrates were bonded to each other and baked at 250 ° C. for 3 hours to prepare a liquid crystal cell.
- resin beads 98 Moropearl SP
- a seal resin 99 made by Mitsui Toatsu Chemical Co., Ltd.
- the relationship between the direction of electric field application at this time and the axial orientation of the polarizing plates 101 and 102 is the same as in the case of Example 1 shown in FIG.
- the table below shows the electrode patterns and maximum transmittances of the liquid crystal display elements A to E, and the fall response time when the applied voltage of 6 V is removed.
- the liquid crystal display element A has a narrow electrode width L, breakage occurs, and cannot be used as a liquid crystal display element.
- the liquid crystal display elements B to D all had high transmittance characteristics and the response time was at an acceptable level.
- the liquid crystal display element E has a slow falling response and cannot obtain practical display characteristics.
- the alignment film used in this example is only an example, and it goes without saying that an alignment film that aligns liquid crystal molecules according to its surface shape, such as a normal polyimide alignment film or inorganic alignment film, is also suitable.
- a monomolecular adsorption film can obtain a uniform alignment film simply by immersing it in a solution, which is a very simple film formation process.
- the conventional display method it is necessary to provide a certain pretilt angle, and it is not easy to control the pretilt angle with a monomolecular adsorption film.
- the monomolecular adsorption film is well matched with the display method of the present invention that does not require precise pretilt angle control.
- the monomolecular adsorption film is an ultra-thin film at a molecular level and has little voltage loss due to the alignment film, and thus is suitable for the display method of the present invention.
- FIG. 10 is a graph showing voltage-transmittance (mode transmittance) characteristics of the liquid crystal display device of Example 4.
- the maximum transmittance tends to increase as the value of the electrode spacing S / electrode width L (S / L) increases, but the rise near the threshold voltage becomes steep, The gradation in the low luminance area has deteriorated.
- it is effective to form a region in the pixel region having a gentle voltage-transmittance characteristic near the threshold voltage, that is, a relatively small S / L value.
- the maximum transmittance is reduced as compared with a region having a relatively large S / L value, but the gradation characteristics at low luminance are remarkably improved. Therefore, the practical value of a liquid crystal display device having a plurality of regions having different S / L values is further increased.
- the electrode when designing with one kind of S / L value, the electrode may not fit exactly within the pixel.
- the inside of the pixel region can be effectively utilized. More specifically, it is possible to eliminate a portion that becomes a dead space due to the absence of a space for inserting one set of electrodes.
- the number of regions having different S / L values arranged in the same pixel region is not particularly limited, but it is preferable that the region is determined while viewing the viewing angle characteristics.
- Example 5 A liquid crystal display element of Example 5 having the same configuration as the schematic cross-sectional view shown in FIG. 4 was produced.
- the electrode width L and the electrode interval S were 3.0 ⁇ m and 5.0 ⁇ m, respectively, and the cell gap was 3.0 ⁇ m. That is, the value of (S + 1.7) / (S + L) was set to about 0.84.
- the transmittance of the polarizing plate 40%, 35% transmittance of the color filter, the pixel aperture ratio of 55% when the backlight luminance is 5000 cd / m 2, panel front luminance becomes 239cd / m 2.
- This value is suitable for a notebook computer or the like. Needless to say, when a high brightness is required for a television or the like, a backlight having a higher brightness may be applied.
- an MVA mode liquid crystal display element having the configuration of FIG. 11 was produced.
- an orientation film coating material JALS-204 (5 wt.%, ⁇ -butyrolactone solution) manufactured by JSR was applied by spin coating onto a glass substrate 142 on which a transparent electrode 151 having an opening 151a having a width of 3.0 ⁇ m was formed.
- the film was baked at 200 ° C. for 2 hours to form an alignment film 144.
- the film thickness of the alignment film 144 was 60 nm.
- a protrusion 153 extended in a direction perpendicular to the paper surface of FIG.
- an alignment film paint JALS-204 (5 wt.%, ⁇ -butyrolactone solution) manufactured by JSR Co. is applied onto the glass substrate 143 by spin coating, and then baked at 200 ° C. for 2 hours to form an alignment film 145. did. At this time, the film thickness of the alignment film 145 was 60 nm.
- FIG. 12 shows the relationship between the extending direction of the opening 151a (the same as the extending direction of the protrusions 153) and the axial orientations of the polarizing plates 149 and 150 at this time. Thereafter, when a voltage of 6 V was applied between the upper and lower electrodes (transparent electrodes 151, 152), the light transmittance at this time was 45%.
- FIG. 13 schematically shows how the liquid crystal molecules 148 rotate at this time.
- the transmittance of the polarizing plate when the transmittance of the polarizing plate is 40%, the transmittance of the color filter is 35%, the pixel aperture is 55%, and the backlight luminance is 5000 cd / m 2 , the panel front luminance is 173 cd / m. It becomes 2 . Therefore, in the current MVA mode, one or more brightness enhancement films are usually inserted into the backlight, and the brightness is increased to about 250 cd / cm 2 .
- Example 5 As described above, from the results of Example 5 and Comparative Example 2, since the liquid crystal display element of Example 5 can obtain high light transmittance, it is not necessary to use a brightness enhancement film that causes a cost increase, and its practical value. Is extremely large.
- Example 6 A liquid crystal display element of Example 6 having the same configuration as the schematic cross-sectional view shown in FIG. 4 was produced.
- the electrode width L and the electrode spacing S were 2.5 ⁇ m and 8.0 ⁇ m, respectively, and the cell gap was 3.3 ⁇ m. That is, the value of (S + 1.7) / (S + L) was set to approximately 0.92.
- the transmittance of the polarizing plate 40%, 35% transmittance of the color filter, the pixel aperture ratio of 55% when the backlight luminance is 5000 cd / m 2, panel front luminance becomes 277cd / m 2. This value is about 16% higher than the luminance 239 cd / cm 2 achieved in Example 5.
- the number of CCFLs CCFLs used in 40-inch class liquid crystal televisions is approximately 15 to 20. Therefore, it can be seen that the number can be reduced by 2 to 3 according to the present embodiment. From the viewpoint of resource saving and low cost, the practical value of this embodiment is extremely large.
- FIG. 15 is a schematic cross-sectional view showing the basic configuration of the liquid crystal display element of Example 7.
- Paint JALS-204 (5 wt.%, ⁇ -butyrolactone solution) was applied by spin coating, and then baked at 200 ° C. for 2 hours to form an alignment film 244 (lower alignment film). At this time, the film thickness of the alignment film 244 was 60 nm.
- a planarization layer 255 made of ultraviolet curable acrylate ( ⁇ 3.7) ( The organic insulating layer was formed with a thickness of 300 nm.
- an alignment film 245 (upper alignment film) having a film thickness of 60 nm was formed using JALS-204.
- resin beads 246 (Micropearl SP) having a diameter of 3.7 ⁇ m manufactured by Sekisui Chemical Co., Ltd. are dispersed on the substrate 242, and a sealing resin 247 manufactured by Mitsui Toatsu Chemical Co., Ltd.
- FIG. 16 is a graph showing voltage-transmittance characteristics of the liquid crystal display element of Example 7.
- UV curable acrylate is used as the material of the planarizing layer 255.
- an unsaturated carboxylic acid such as acrylic acid or methacrylic acid or an ester thereof, or acrylamide or methacrylic acid is used.
- an organic film containing an amide such as an amide or a derivative thereof may be used.
- a planarization resin overcoat material
- a hot-melt polyimide resin is also a suitable material.
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Abstract
Description
本実施形態の液晶表示装置は、電界印加によりセル内に電界強度の分布を形成し、液晶のベンド配列を実現するものである。また、本実施形態の液晶表示装置は、垂直配向されたp型ネマチック液晶(正の誘電異方性を有するネマチック液晶)に対して、基板面に対して横方向に電界を印加する液晶表示装置であり、電界印加によりベンド状の配列が形成されることを特徴としている。図1は、実施形態1の液晶表示装置の基本構成を示す斜視模式図である。2枚の透明な基板11、12上には垂直配向膜13、14が配設されており、電圧無印加の時にはp型ネマチック液晶(液晶分子15)はホメオトロピック配向を示している。より具体的には、垂直配向膜13、14近傍の液晶分子15は、長軸が電圧無印加時に、基板11、12それぞれに対して略垂直に向くように配向している。このように、液晶分子15のプレチルト角は、略垂直であれば特に厳密に制御される必要はないが、高コントラスト比を得る観点からは、88°以上であることが好ましい。また、基板11、12は、一般的な液晶表示装置に利用されるガラスやプラスチックからなる透明な基板と同様の基板でよいが、より具体的には、光透過率が75%以上(より好適には90%以上)であることが好ましく、ヘイズが5%以下(より好適には3%以下)であることが好ましい。光透過率を75%以上にすることにより、本実施形態を安価なタッチパネルに利用することができる。また、光透過率を90%以上にすることにより、本実施形態を通常のTFT-LCDの液晶表示パネルに利用することができる。
以下に実施例を示し、図面を参照しながら本発明について更に詳細に説明する。
実施例1の液晶表示素子の基本構成を示す断面模式図を図4に示す。種々の電極幅L及び電極間隔Sに設定された複数の液晶表示素子を作製した。まず、電極幅L及び電極間隔Sに設定されたITO製の櫛歯状電極(櫛歯電極)41を有するガラス基板42上にJSR社製配向膜塗料JALS-204(5wt.%、γ-ブチロラクトン溶液)をスピンコート法にて塗布した後、200℃にて2時間焼成し、配向膜44を形成した。このときの配向膜44の膜厚は、60nmであった。同様にして、配向膜44と同一の配向膜塗料を用いてガラス基板43上に膜厚60nmの配向膜45を製膜した。その後、基板42上に積水化学工業社製の直径4μmの樹脂ビーズ46(ミクロパールSP)を分散し、基板43上に三井東圧化学工業社製シール樹脂47(ストラクトボンドXN-21-S)を印刷し、これらの基板を貼り合わせ250℃、3時間焼成することにより、液晶セルを作製した。その後、チッソ社製液晶材料48:SD-5654(Δε=16.2、Δn=0.099)を真空注入法にて封入するとともに偏光板49、50を貼合し、実施例1の液晶表示素子を複数作製した。この時の電界印加の方向と偏光板49、50の軸方位との関係を図5に示す。このように、偏光板49、50は、クロスニコルに配置されるとともに、偏光板49、50の透過軸方位のなす角を二等分する方向に電界は印加される。
基本構成が図4と同一であり、電極幅Lが4μm、電極間隔Sが4μm、セルギャップが4μmの液晶セルを下記の方法で作製した。
Δε=15、Δn=0.1、k11=11.2pN、k22=5.2pN、k33=15.6pNの液晶材料を用い、L/S=10μm/14μm、セルギャップが7μmであること以外、実施例1と同様なセル構造を有する比較例1の液晶表示素子を作製した。その後、液晶表示素子に0V~20Vの30Hz矩形波を印加した時の、室温(25℃)での最大透過率を測定したところ、34%であった。また、7Vの電圧を印加した時の立ち上がり応答時間、7V印加時より電圧を切った時の応答時間は、それぞれ20ms、25msであり、不充分な応答特性であった。なお、k11、k22及びk33はそれぞれ、スプレイ、ツイスト及びベントの弾性定数である。
実施例1と同様の方法にて、電極幅L及び電極間隔Sがそれぞれ異なり、液晶層厚が4μmである実施例3の液晶表示素子A~Eを作成した。実施例3の液晶表示素子の基本構成を示す断面模式図を図9に示す。共通電極群及び画素電極群を同一平面上に配置した場合、電極間隔Sが狭まるにつれ、共通電極及び画素電極間でショートが発生する確率が高くなるため、本実施例では、共通電極群と画素電極群との間に絶縁層としてSiNx膜(厚み0.2μm)を真空蒸着法により形成した。実験に用いた液晶材料はメルク社製液晶材料であり、誘電率異方性Δε=21、屈折率異方性Δn=0.11の物性値を有している。以下に液晶表示素子A~Eの製造法を示す。
液晶材料として、メルク社製MJ08356(Δε=20、Δn=0.1)を用い、直径3.7μmのビーズを分散したこと以外は、実施例1と同様にして作製したテストセル(セルギャップ=3.7μm)について、種々の電極幅L/電極間隔Sで電圧-透過率特性を測定した。なお、液晶層の厚み方向におけるリタデーションRthは、260nmであった。図10は、実施例4の液晶表示装置の電圧-透過率(モード透過率)特性を示すグラフである。
図4に示される断面模式図と同じ構成を有する実施例5の液晶表示素子を作製した。ここにおいて、電極幅L及び電極間隔Sは、それぞれ3.0μm、5.0μmとし、セルギャップを3.0μmとした。すなわち、(S+1.7)/(S+L)の値を略0.84に設定した。実施例1と同様の方法にて液晶表示素子を作製し、メルク社製液晶材料:MJ081029(Δε=22.5、Δn=0.100)を真空注入法にて封入するとともに偏光板49、50を貼合した。この時の電界印加の方向と偏光板49、50の軸方位との関係は、図5に示した実施例1の場合と同様である。
実施例5の比較例として、図11の構成を有するMVAモード液晶表示素子を作製した。まず、3.0μm幅の開口部151aを有する透明電極151が形成されたガラス基板142上にJSR社製配向膜塗料JALS-204(5wt.%、γ-ブチロラクトン溶液)をスピンコート法にて塗布した後、200℃にて2時間焼成し、配向膜144を形成した。このときの配向膜144の膜厚は、60nmであった。一方、透明電極152を有するガラス基板143上に、フォトリソグラフィーの手法により図11紙面に垂直な方向に延伸された突起153を形成した。その後、ガラス基板143上にJSR社製配向膜塗料JALS-204(5wt.%、γ-ブチロラクトン溶液)をスピンコート法にて塗布した後、200℃にて2時間焼成し、配向膜145を形成した。このときの配向膜145の膜厚は、60nmであった。
図4に示される断面模式図と同じ構成を有する実施例6の液晶表示素子を作製した。ここにおいて、電極幅L及び電極間隔Sは、それぞれ2.5μm、8.0μmとし、セルギャップを3.3μmとした。すなわち、(S+1.7)/(S+L)の値を略0.92に設定した。実施例1と同様の方法にて液晶表示素子を作製し、メルク社製液晶材料:MJ072330(Δε=22.3、Δn=0.1220)を真空注入法にて封入するとともに偏光板49、50を貼合した。この時の電界印加の方向と偏光板49、50の軸方位との関係は、図5に示した実施例1の場合と同様である。
実施例7の液晶表示素子の基本構成を示す断面模式図を図15に示す。電極幅Lが2.6μm、電極間隔Sが5.0μmに設定されたITO製の櫛歯状電極241(櫛歯電極)を有するガラス基板242(下側ガラス基板)上にJSR社製配向膜塗料JALS-204(5wt.%、γ-ブチロラクトン溶液)をスピンコート法にて塗布した後、200℃にて2時間焼成し、配向膜244(下側配向膜)を形成した。このときの配向膜244の膜厚は、60nmであった。一方、膜厚2.0μmの緑色のカラーフィルタ254が形成されたガラス基板243(上側ガラス基板)のカラーフィルタ254上に、紫外線硬化型アクリレート(ε=3.7)からなる平坦化層255(有機絶縁層)を300nmの厚みで形成した。次に、基板242側と同様にして、JALS-204を用いて、膜厚60nmの配向膜245(上側配向膜)を製膜した。その後、基板242上に積水化学工業社製の直径3.7μmの樹脂ビーズ246(ミクロパールSP)を分散し、基板243上に三井東圧化学工業社製シール樹脂247(ストラクトボンドXN-21-S)を印刷し、これらの基板を貼り合わせ250℃、3時間焼成することにより、液晶セルを作製した。その後、メルク社製液晶材料248:MJ08356(Δε=20、Δn=0.1)を真空注入法にて封入するとともに偏光板250(上側偏光板)及び偏光板249(下側偏光板)を貼合し、実施例7の液晶表示素子を作製した。この時の電界印加の方向と2枚の偏光板249、250の軸方位との関係は、図5に示した実施例1と同様である。すなわち、2枚の偏光板249、250は、クロスニコルに配置されるとともに、偏光板249、250の透過軸方位のなす角を二等分する方向に電界は印加される。
13,14,44,45,95,97,144,145,244,245:配向膜
15,48,100,248:液晶(p型ネマチック液晶)
16,41,91,94,241:電極(櫛歯状電極)
17,18,49,50,101,102,149,150,249,250:偏光板
46,98,146,246:球状スペーサ
47,99,147,247:シール
93:絶縁層
148:液晶(n型ネマチック液晶)
151,152:透明電極
151a:開口部
153:突起(リブ)
254:カラーフィルタ
255:平坦化層
Claims (18)
- 少なくとも一方が透明な二枚の基板間に挟持されたp型ネマチック液晶を含む液晶表示装置であって、
該p型ネマチック液晶は、電圧無印加時に、該二枚の基板面に対して垂直に配向し、
該二枚の基板の少なくとも一方は、櫛歯状電極を有し、
該櫛歯状電極の電極幅L及び電極間隔Sは、(S+1.7)/(S+L)≧0.7の関係を満たすことを特徴とする液晶表示装置。 - 前記液晶表示装置は、一つの画素領域内に、第一領域と、前記電極幅L及び前記電極間隔Sの比S/Lが該第一領域と異なる第二領域とを有することを特徴とする請求項1記載の液晶表示装置。
- 前記第一領域又は前記第二領域の開口領域は、画素開口領域の50%以上を占めることを特徴とする請求項2記載の液晶表示装置。
- 前記電極幅L及び前記電極間隔Sは、S/L≦3.75の関係を満たすことを特徴とする請求項1~3のいずれかに記載の液晶表示装置。
- 前記電極幅Lは、2μm以上であることを特徴とする請求項1~4のいずれかに記載の液晶表示装置。
- 前記電極幅Lは、4μm以下であることを特徴とする請求項1~5のいずれかに記載の液晶表示装置。
- 前記櫛歯状電極は、共通電極群及び画素電極群を含み、
該共通電極群及び該画素電極群は、絶縁層を介して配置されることを特徴とする請求項1~6のいずれかに記載の液晶表示装置。 - 前記電極幅L及び前記電極間隔Sは、(S+1.7)/(S+L)≧0.8の関係を満たすことを特徴とする請求項1~7のいずれかに記載の液晶表示装置。
- 前記電極幅L及び前記電極間隔Sは、(S+1.7)/(S+L)≧0.9の関係を満たすことを特徴とする請求項1~8のいずれかに記載の液晶表示装置。
- 少なくとも一方が透明な二枚の基板間に挟持されたp型ネマチック液晶を含む液晶表示装置であって、
該p型ネマチック液晶は、電圧無印加時に、該二枚の基板面に対して垂直に配向し、
該二枚の基板の少なくとも一方は、櫛歯状電極を有し、
該液晶表示装置は、一つの画素領域内に、第一領域と、該櫛歯状電極の電極幅L及び電極間隔Sの比S/Lが該第一領域と異なる第二領域とを有することを特徴とする液晶表示装置。 - 前記第一領域又は前記第二領域の開口領域は、画素開口領域の50%以上を占めることを特徴とする請求項10記載の液晶表示装置。
- 前記電極幅L及び前記電極間隔Sは、(S+1.7)/(S+L)≧0.7の関係を満たすことを特徴とする請求項10又は11記載の液晶表示装置。
- 前記電極幅L及び前記電極間隔Sは、S/L≦3.75の関係を満たすことを特徴とする請求項10~12のいずれかに記載の液晶表示装置。
- 前記電極幅Lは、2μm以上であることを特徴とする請求項10~13のいずれかに記載の液晶表示装置。
- 前記電極幅Lは、4μm以下であることを特徴とする請求項10~14のいずれかに記載の液晶表示装置。
- 前記櫛歯状電極は、共通電極群及び画素電極群を含み、
該共通電極群及び該画素電極群は、絶縁層を介して配置されることを特徴とする請求項10~15のいずれかに記載の液晶表示装置。 - 前記電極幅L及び前記電極間隔Sは、(S+1.7)/(S+L)≧0.8の関係を満たすことを特徴とする請求項10~16のいずれかに記載の液晶表示装置。
- 前記電極幅L及び前記電極間隔Sは、(S+1.7)/(S+L)≧0.9の関係を満たすことを特徴とする請求項10~17のいずれかに記載の液晶表示装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0914672A BRPI0914672A2 (pt) | 2008-06-27 | 2009-05-29 | dispositivo de visor de cristal líquido |
RU2011102970/28A RU2469366C2 (ru) | 2008-06-27 | 2009-05-29 | Жидкокристаллическое дисплейное устройство |
EP09769981.3A EP2290437B1 (en) | 2008-06-27 | 2009-05-29 | Liquid crystal display device |
JP2010517833A JP5178831B2 (ja) | 2008-06-27 | 2009-05-29 | 液晶表示装置 |
US12/993,151 US20110063558A1 (en) | 2008-06-27 | 2009-05-29 | Liquid crystal display device |
CN200980113309.9A CN102317849B (zh) | 2008-06-27 | 2009-05-29 | 液晶显示装置 |
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EP (1) | EP2290437B1 (ja) |
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WO2012011443A1 (ja) * | 2010-07-22 | 2012-01-26 | シャープ株式会社 | 液晶パネルおよび液晶表示装置 |
JP2012118329A (ja) * | 2010-12-01 | 2012-06-21 | Lg Display Co Ltd | 液晶表示装置 |
JP2012155289A (ja) * | 2011-01-28 | 2012-08-16 | Konica Minolta Advanced Layers Inc | 液晶表示装置 |
US8421975B2 (en) | 2008-10-14 | 2013-04-16 | Sharp Kabushiki Kaisha | Liquid crystal display device |
JP2015135817A (ja) * | 2012-07-20 | 2015-07-27 | 東洋紡株式会社 | レーザーエッチング加工用導電性ペースト、電気回路およびタッチパネル |
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US8934075B2 (en) | 2009-05-27 | 2015-01-13 | Sharp Kabushiki Kaisha | Liquid crystal display device comprising a P-type liquid crystal material and a first alignment layer having an anchoring energy |
US8750857B2 (en) * | 2010-06-04 | 2014-06-10 | Qualcomm Incorporated | Method and apparatus for wireless distributed computing |
WO2013038984A1 (ja) * | 2011-09-12 | 2013-03-21 | シャープ株式会社 | 液晶表示パネルおよび液晶表示装置 |
CN102629041B (zh) * | 2012-02-09 | 2014-04-16 | 京东方科技集团股份有限公司 | 一种3d显示装置及其制造方法 |
CN102629607B (zh) * | 2012-02-09 | 2016-02-10 | 京东方科技集团股份有限公司 | 阵列基板和双视场显示装置及其制造方法 |
US9664957B2 (en) * | 2012-06-25 | 2017-05-30 | Industry-University Cooperation Foundation Hanyang University | Liquid crystal display device and method of driving the same |
KR20140001071A (ko) | 2012-06-25 | 2014-01-06 | 한양대학교 산학협력단 | 액정 조성물 |
WO2014017364A1 (ja) * | 2012-07-25 | 2014-01-30 | シャープ株式会社 | 液晶表示装置 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US8421975B2 (en) | 2008-10-14 | 2013-04-16 | Sharp Kabushiki Kaisha | Liquid crystal display device |
WO2012011443A1 (ja) * | 2010-07-22 | 2012-01-26 | シャープ株式会社 | 液晶パネルおよび液晶表示装置 |
JP2012118329A (ja) * | 2010-12-01 | 2012-06-21 | Lg Display Co Ltd | 液晶表示装置 |
JP2012155289A (ja) * | 2011-01-28 | 2012-08-16 | Konica Minolta Advanced Layers Inc | 液晶表示装置 |
JP2015135817A (ja) * | 2012-07-20 | 2015-07-27 | 東洋紡株式会社 | レーザーエッチング加工用導電性ペースト、電気回路およびタッチパネル |
Also Published As
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US20110063558A1 (en) | 2011-03-17 |
CN102317849A (zh) | 2012-01-11 |
EP2290437A1 (en) | 2011-03-02 |
RU2469366C2 (ru) | 2012-12-10 |
JP5178831B2 (ja) | 2013-04-10 |
EP2290437B1 (en) | 2013-12-11 |
RU2011102970A (ru) | 2012-08-10 |
BRPI0914672A2 (pt) | 2015-10-20 |
JPWO2009157271A1 (ja) | 2011-12-08 |
CN102317849B (zh) | 2015-01-07 |
EP2290437A4 (en) | 2011-12-21 |
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