WO2010055633A1 - 液晶表示装置及び液晶表示装置の製造方法 - Google Patents
液晶表示装置及び液晶表示装置の製造方法 Download PDFInfo
- Publication number
- WO2010055633A1 WO2010055633A1 PCT/JP2009/005952 JP2009005952W WO2010055633A1 WO 2010055633 A1 WO2010055633 A1 WO 2010055633A1 JP 2009005952 W JP2009005952 W JP 2009005952W WO 2010055633 A1 WO2010055633 A1 WO 2010055633A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- display device
- alignment
- wiring
- crystal display
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- 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
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136213—Storage capacitors associated with the pixel electrode
Definitions
- the present invention relates to a vertical alignment type liquid crystal display device provided with a vertical alignment layer.
- An alignment division type liquid crystal display device having a vertical alignment type liquid crystal layer is known as a liquid crystal display device with improved viewing angle characteristics.
- a liquid crystal display device is called a VA (Vertical Alignment) mode liquid crystal display device.
- VA Vertical Alignment
- Patent Document 1 discloses a MVA (Multi-domain Vertical Alignment) mode liquid crystal display device.
- an alignment regulating structure that regulates the alignment of liquid crystal molecules is provided on each of a pair of substrates opposed via a liquid crystal layer.
- the orientation regulating structure is a protruding structure (convex portion) formed on the electrode or a slit formed on the electrode.
- Patent Document 2 describes a CPA (Continuous Pinwheel Alignment) mode liquid crystal display device as another VA mode liquid crystal display device.
- CPA Continuous Pinwheel Alignment
- an opening or notch is formed in one of a pair of electrodes facing each other through a liquid crystal layer, and liquid crystal molecules are inclined radially using an oblique electric field generated on the opening or notch.
- a wide viewing angle is realized by the orientation.
- Patent Document 3 discloses a technique for stabilizing the radial tilt alignment of liquid crystal molecules in the CPA mode. According to this technique, a radially inclined alignment formed by an alignment regulating structure (an opening or a notch in an electrode that generates an oblique electric field) provided on one substrate is an alignment regulating structure (for example, It is stabilized by the convex part).
- an alignment regulating structure an opening or a notch in an electrode that generates an oblique electric field
- Patent Document 4 Patent Document 5, Patent Document 6, and Patent Document 7 propose a method of forming a polymer structure as an alignment maintaining layer for defining the pretilt angle and pretilt direction of liquid crystal molecules.
- This method is called a PSA (Polymer-Sustained Alignment) method.
- the polymer structure is formed by photopolymerization or thermal polymerization of a polymerizable composition previously mixed in the liquid crystal layer.
- the process of forming the polymer structure (hereinafter referred to as “PSA process”) is not a state in which the liquid crystal molecules are aligned perpendicular to the substrate surface, but the liquid crystal molecules are tilted by applying a predetermined voltage to the liquid crystal layer. It is performed in an oriented state.
- the application of voltage to the liquid crystal layer in the PSA process is performed such that the polarity of the applied voltage is periodically reversed (that is, AC driving is performed) so that the liquid crystal is not polarized.
- a CPA mode liquid crystal display device 500 shown in FIG. 10 is provided with a TFT substrate 510 provided with a TFT (not shown) provided for each pixel, a counter substrate 520 facing the TFT substrate 510, and a gap therebetween.
- a vertical alignment type liquid crystal layer 530 On the counter substrate 520, a protrusion (convex portion) 523 is provided for regulating the alignment of the liquid crystal molecules 531 and fixing the alignment center of the liquid crystal domain.
- the TFT is turned on by applying a gate-on voltage of +10 V from the scanning wiring 514 to the gate electrode of the TFT.
- the pixel electrode A potential of 0 V is applied to 512 via a signal wiring (not shown).
- the potential of the counter electrode 522 is oscillated between +4 V (the state of FIG. 10A) and ⁇ 4 V (the state of FIG. 10B), and the voltage applied to the liquid crystal layer 530 is reduced.
- AC driving in which the polarity is reversed in synchronization with the oscillation of the potential of the counter electrode 522 is realized.
- FIG. 12 is a view of the liquid crystal molecules 531 in one pixel that are inclined and aligned in the PSA process, as viewed from the upper surface side of the liquid crystal display device.
- FIG. 12A shows an ideal tilted alignment state of the liquid crystal molecules 531
- FIGS. 12B and C are tilted alignments that can cause roughness in the display by the methods (1) and (2).
- the state is schematically represented.
- each liquid crystal molecule 531 is illustrated so that a portion close to the counter electrode 522 looks larger in order to represent the tilted alignment of the liquid crystal molecules 531 (the end of the liquid crystal molecule 531 on the side close to the counter electrode 522). Parts are shown in circles).
- the liquid crystal molecules 531 in one pixel are uniformly radially inclined with respect to the protrusions 523 (radially inclined alignment) as shown in FIG. A wide viewing angle display with little display unevenness is realized.
- the counter electrode 522 is always supplied with a potential other than 0 V as shown in FIGS.
- the potential of the auxiliary capacitor wiring 518 is maintained at 0 V, the liquid crystal molecules 531 positioned on these wirings are also tilted.
- the signal wiring 516 extends along the boundary between two adjacent pixels, the liquid crystal molecules 531 on the signal wiring 516 have an alignment regulating force in opposite directions from both pixels almost evenly. Acting (that is, the alignment regulating force from both pixels is offset). Accordingly, the liquid crystal molecules 531 on the signal wiring 516 are inclined and aligned along the direction in which the signal wiring 516 extends, as shown in FIGS. 12B and 12C.
- FIG. 12B shows a state in which all the liquid crystal molecules 531 on the pair of signal wirings 516 are inclined downward along the signal wiring 516
- FIG. 12C shows the state above one of the pair of signal wirings 516.
- the liquid crystal molecules 531 are inclined downward in the figure, and the liquid crystal molecules 531 on the other signal wiring 516 are oriented upward in the figure. In either case, the alignment direction of the liquid crystal molecules 531 in the vicinity of the signal wiring 516 (the regions indicated by a and b in the figure) is irregularly disturbed by the tilted alignment of the liquid crystal molecules 531 on the signal wiring 516.
- the ideal inclined alignment state shown in FIG. 12A cannot be obtained.
- the liquid crystal molecules 531 on one signal line 516 are inclined in the opposite direction with respect to one point on the signal line 516 (for example, upward and downward inclined alignments in the figure).
- the boundary may move along the signal wiring 516 in that case. Even in such a case, the orientation of the liquid crystal molecules 531 in the pixel is irregularly disturbed, and an ideal tilted orientation state cannot be obtained.
- the liquid crystal molecules initially aligned (pretilt) at the time of display are also disturbed by the formed polymer structure.
- the alignment state varies from pixel to pixel, resulting in display roughness (non-uniform luminance).
- a large voltage can be applied to the liquid crystal layer in order to speed up the processing.
- the disturbance of the liquid crystal in the PSA process is strongly imprinted by the alignment regulating force due to the polymer structure. Can cause a greater roughness.
- the present invention has been made in view of the above problems, and an object thereof is to reduce display roughness in a liquid crystal display device and to provide a high-quality display.
- the liquid crystal display device has a plurality of pixels arranged in a matrix along a first direction and a second direction different from the first direction, and is arranged corresponding to each of the plurality of pixels.
- a TFT substrate having a thin film transistor and a pixel electrode, a signal line extending generally in the first direction and supplying a display signal to the thin film transistor, and a scanning line extending generally in the second direction and supplying a gate signal to the thin film transistor
- a counter substrate having a counter electrode opposed to the pixel electrode, a liquid crystal layer disposed between the TFT substrate and the counter substrate, and at least one of the TFT substrate and the counter substrate on the liquid crystal layer side
- the TFT substrate includes an auxiliary capacitance wiring extending in the second direction
- the signal wiring includes the two linear portions and the bent portion, and the bent when viewed from the substrate vertical direction.
- the portion is formed at a position overlapping the auxiliary capacitance wiring.
- At least a part of the bent portion is formed at a position overlapping the pixel electrode.
- the signal wiring and the scanning wiring are not formed on an extension line of the two linear portions between the two linear portions.
- the bent portion is located at the center of one side of the pixel.
- the signal wiring or the scanning wiring is provided on the boundary between the two pixels.
- the boundary of the liquid crystal alignment is formed.
- An embodiment includes an alignment maintaining layer that is formed on the liquid crystal layer side of the alignment film and defines an alignment direction of the liquid crystal molecules with respect to the substrate surface.
- the alignment maintaining layer is made of a polymer structure formed by polymerizing a polymerizable composition contained in the liquid crystal layer.
- Another liquid crystal display device includes a plurality of pixels arranged in a matrix along a first direction and a second direction different from the first direction, and corresponds to each of the plurality of pixels.
- a thin film transistor and a pixel electrode disposed; a signal line extending generally in the first direction and supplying a display signal to the thin film transistor; and a scanning line extending generally in the second direction and supplying a gate signal to the thin film transistor.
- the boundary between the two pixels is A boundary of liquid crystal alignment in the direction along the signal wiring or the scanning wiring is formed.
- At least one of the signal wiring and the scanning wiring includes two linear portions extending linearly in the first direction or the second direction at the boundary between the two pixels, and the two linear shapes. And a bent portion extending around the region.
- the method for manufacturing a liquid crystal display device includes a plurality of pixels arranged in a matrix along a first direction and a second direction different from the first direction, and corresponds to each of the plurality of pixels. Thin film transistors and pixel electrodes, a signal line extending in the first direction and supplying a display signal to the thin film transistor, and a scanning line extending in the second direction and supplying a gate signal to the thin film transistor.
- a TFT substrate, a counter substrate having a counter electrode opposed to the pixel electrode, a liquid crystal layer disposed between the TFT substrate and the counter substrate, and the liquid crystal of at least one of the TFT substrate and the counter substrate An alignment film formed on the layer-side surface and for aligning liquid crystal molecules contained in the liquid crystal layer substantially perpendicularly to the substrate surface.
- an alignment boundary of liquid crystal alignment in a direction along the signal wiring or the scanning wiring is formed on the boundary between the two pixels on the boundary between the two pixels by the liquid crystal molecules maintained substantially vertically in the region in the polymerization step. It is formed.
- At least one of the signal wiring and the scanning wiring has two linear portions extending linearly in the first direction or the second direction at the boundary of the two pixels, and the two linear shapes. And a bent portion that is disposed between the portions and extends around the region.
- liquid crystal molecules on at least one of the signal wiring and the scanning wiring can be stably aligned in a more desirable direction when forming the alignment maintaining layer in the PSA liquid crystal display device.
- the alignment disorder of the liquid crystal molecules on the pixel electrode during the formation of the alignment maintaining layer is reduced, and an ideal initial alignment regulating force can be given to the alignment maintaining layer. Therefore, variations in luminance characteristics from pixel to pixel are reduced, and the occurrence of roughness during display is reduced.
- the liquid crystal molecules on the signal wiring or the scanning wiring can be stably aligned in a desired direction. Therefore, since the alignment disorder of the liquid crystal molecules on the pixel electrode is reduced, the variation in the luminance characteristics of each pixel is reduced, and the occurrence of roughness during display is reduced.
- FIG. 2 is a diagram schematically illustrating a liquid crystal display device 100 according to a preferred embodiment of the present invention, and is a cross-sectional view taken along line A-A ′ in FIG. 1. It is a figure which shows typically the liquid crystal display device 100 in suitable embodiment of this invention, and is a figure showing the equivalent circuit of one pixel.
- FIG. 2 is a diagram schematically showing a liquid crystal display device 100 in a preferred embodiment of the present invention, and is a cross-sectional view taken along line B-B ′ in FIG. 1.
- FIG. 4 is a plan view schematically showing the alignment state of liquid crystal molecules when a voltage is applied to a liquid crystal layer in the liquid crystal display device 100.
- FIG. (A) And (b) is process sectional drawing which shows the manufacturing process of the liquid crystal display device 100 typically.
- (A) to (d) represent potentials applied to the scanning wiring 14, auxiliary capacitance wiring 16, counter electrode 22, signal wiring 15, pixel electrode 12, and liquid crystal layer 30 in the manufacturing process of the liquid crystal display device 100.
- (A) is a microscope picture which shows the orientation state of the liquid crystal molecule by the liquid crystal display device of a reference example
- (b) is a microscope picture which shows the orientation state of the liquid crystal molecule by suitable embodiment of this invention.
- (A) to (c) is a diagram for explaining a first example (method (1)) of a method of applying a voltage to a liquid crystal layer in a PSA process.
- (A) to (c) is a diagram for explaining a second example (method (2)) of applying a voltage to the liquid crystal layer in the PSA process.
- (A) is a diagram schematically showing an ideal alignment state of the liquid crystal
- (b) and (c) are diagrams schematically showing an alignment state including alignment disorder.
- FIG. 1, FIG. 2, and FIG. 3 show a CPA mode liquid crystal display device 100 according to this embodiment.
- FIG. 1 is a plan view schematically showing a region corresponding to one pixel of the liquid crystal display device 100
- FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG. This shows a state where no voltage is applied (or a state where a voltage less than the threshold voltage is applied).
- FIG. 3 shows an equivalent circuit of one pixel of the liquid crystal display device 100.
- the liquid crystal display device 100 includes a liquid crystal display panel 100a and is arranged in a matrix along the vertical direction (first direction) and the horizontal direction (second direction) in FIG. A plurality of pixels 110 are provided.
- the liquid crystal display panel 100 a includes a TFT substrate (active matrix substrate) 10, a counter substrate 20 facing the TFT substrate 10, and a vertical alignment type liquid crystal layer 30 provided between the TFT substrate 10 and the counter substrate 20. Contains.
- the TFT substrate 10 includes a pixel electrode 12 disposed for each pixel 110, a TFT (thin film transistor) 13 that is a switching element electrically connected to the pixel electrode 12, and a scanning wiring (gate signal) that supplies a scanning signal (gate signal) to the TFT 13.
- the TFT 13, the scanning wiring 14, and the signal wiring 15 are provided on a transparent substrate (glass substrate, plastic substrate, etc.) 11.
- the signal wiring 15 extends in the vertical direction in FIG. 1 along the boundaries of the plurality of pixels 110, and the scanning wiring 14 extends in the left-right direction in FIG. 1 along the boundaries of the plurality of pixels 110.
- an auxiliary capacitance line 16 electrically connected to an auxiliary capacitance counter electrode 19 described later extends substantially parallel to the scanning line 14.
- An insulating layer 18 is formed on the TFT 13, the scanning wiring 14, the signal wiring 15, and the auxiliary capacitance wiring 16 (on the liquid crystal layer 30 side), and the insulating layer 18 corresponds to each pixel 110.
- the pixel electrodes 12 are arranged in a matrix. Note that the scanning wiring 14, the auxiliary capacitance wiring 16, and the gate electrode of the TFT 13, and the signal wiring 15 and the source / drain electrode of the TFT 13 are formed in different layers, and another insulating layer is formed between these layers. However, the detailed illustration is omitted here.
- the counter substrate 20 has a counter electrode 22 that faces the pixel electrode 12.
- the counter electrode 22 is provided on a transparent substrate 21 (glass substrate, plastic substrate, etc.).
- Protrusions (convex portions) 23 for restricting the alignment of the liquid crystal molecules 31 and fixing the alignment center of the liquid crystal domain are provided on the counter electrode 22 at positions facing the center of the pixel 110 or the pixel electrode 12. It has been. While the pixel electrode 12 is disposed in each of the plurality of pixels, the counter electrode 22 is typically formed as one transparent conductive film that faces all the pixel electrodes 12. Although not shown here, typically, a color filter is provided between the transparent substrate 21 and the counter electrode 22. Therefore, the counter substrate 20 is also called a color filter substrate.
- each pixel 110 has a liquid crystal capacitor C LC formed by the pixel electrode 12 and the counter electrode 22 and the liquid crystal layer 30 positioned therebetween.
- Each pixel has an auxiliary capacitor C S electrically connected in parallel to the liquid crystal capacitor C LC .
- the storage capacitor C S includes a storage capacitor electrode 17 electrically connected to the pixel electrode 12 and a storage capacitor counter electrode 19 facing the storage capacitor electrode 17 through an insulating material (insulating layer).
- insulating material insulating layer
- the auxiliary capacitance electrode 17 is disposed on the auxiliary capacitance wiring 16 by patterning the same metal layer as that of the signal wiring 15, and a portion overlapping the auxiliary capacitance electrode 17 of the auxiliary capacitance wiring 16 is used as the auxiliary capacitance counter electrode 19. Can do.
- a vertical alignment film 33 is provided on the surface of the TFT substrate 10 on the liquid crystal layer 30 side, and a polymer structure which is an alignment control layer on the surface of the vertical alignment film 33 on the liquid crystal layer 30 side.
- An object 32 is provided.
- such a vertical alignment film is also provided on the surface of the counter substrate 20 on the liquid crystal layer 30 side, and the alignment control is also performed on the surface of the vertical alignment film on the liquid crystal layer 30 side.
- a polymer structure that is a layer is provided.
- optical layers such as a retardation plate and a polarizing plate are provided on the outer sides of the TFT substrate 10 and the counter substrate 20.
- the vertical alignment type liquid crystal layer 30 includes liquid crystal molecules 31 having negative dielectric anisotropy, and further includes a chiral agent as necessary.
- the liquid crystal molecules 31 in the liquid crystal layer 30 are aligned substantially perpendicular to the surface of the vertical alignment film 33 (or the surface of the TFT substrate 10) when no voltage is applied to the liquid crystal layer 30.
- the polymer structure 32 is provided by a method described later, the liquid crystal molecules 31 are not aligned strictly perpendicular to the surface of the vertical alignment film 33.
- FIG. 4 shows a cross section taken along the line B-B 'in FIG. As shown in FIG. 2, the vertical alignment film 33 and the polymer structure 32 are also formed on the signal wiring 15 and the scanning wiring 14.
- the signal wiring 15 includes two linear portions 15a extending linearly in the vertical direction (first direction) at the boundary between two adjacent pixels, and two linear portions 15a. And a bent portion 15b which is disposed between the two linear portions 15a and extends away from the extended line.
- the bent portion 15b is formed on the auxiliary capacitance wiring 16 (or at a position overlapping the auxiliary capacitance wiring 16).
- the bent portion 15b is formed so as to overlap the pixel electrode 12 on the left side of the signal wiring 15 in FIG.
- the bent portion 15 b may be formed so as to overlap the pixel electrode 12 on the right side of the signal wiring 15.
- a gap 15c where the signal wiring 15 is not formed is formed on the extension line of the two linear portions 15a between the two linear portions 15a.
- the liquid crystal molecules 31 on the signal wiring 15 are inclined and oriented so as to approach a direction parallel to the equipotential surface from a direction perpendicular to the substrate surface.
- the liquid crystal molecules 31 on the gap 15c are maintained substantially perpendicular to the substrate surface.
- the liquid crystal molecules 31 on the two linear portions 15a are tilted in accordance with the voltage, but the liquid crystal molecules 31 on the gap 15c maintain the vertical alignment state. As shown in FIG. 4, the liquid crystal molecules 31 on the two linear portions 15a are inclined and aligned so as to be symmetrical with respect to the vertically aligned liquid crystal molecules 31 on the gap 15c.
- the bent portion 15b and the gap 15c function as control means for regulating the alignment direction of the liquid crystal molecules 31 on the signal wiring 15 along the signal wiring 15.
- the bent portion 15 b and the gap 15 c are preferably located at the center of one side of the pixel 110 or the pixel electrode 12 so that the tilted alignment of the liquid crystal molecules 31 is more symmetric in the pixel 110.
- FIG. 5 is a diagram schematically showing a modified example of the signal wiring 15.
- the bent portion b of the signal wiring 15 of the modified example is not bent only to one pixel 110 side but swells in both the left and right directions, and the gap 15c where the signal wiring 15 does not exist at the center. Is formed. Even in this case, the liquid crystal molecules 31 on the gap 15c are maintained substantially perpendicular to the substrate surface, and when the potential difference is generated between the signal wiring 15 and the counter electrode 20 by the gap 15c, the two adjacent liquid crystal molecules 31 are maintained. A region that forms a boundary of alignment of liquid crystal molecules on the boundary of two pixels 110 is formed.
- the signal wiring 15 includes the two linear portions 15a and the bent portion 15b.
- the scanning wiring 14 or both of the scanning wiring 14 and the signal wiring 15 include the above-described two linear portions 15a and 15b.
- a form including the bent portion 15b is also included in the embodiment of the present invention.
- the scanning wiring 14 includes two linear portions 15a and a bent portion 15b
- the sectional view taken along the line CC ′ in FIG. 1 is basically the same as the sectional view shown in FIG. 4 (however, the signal wiring 15 Is replaced with the scanning wiring 14 and the auxiliary capacitance wiring 16 is removed).
- a gap 15c in which the scanning wiring 14 is not formed is formed on the extension line of the two linear portions 15a between the two linear portions 15a of the scanning wiring 14.
- a plurality of bent portions 15 b and gaps 15 c may be formed on one side of the pixel 110 or the pixel electrode 12. In that case, the plurality of bent portions 15b and the gaps 15c are arranged along one side of the pixel 110 or the pixel electrode 12 so that the tilted alignment of the liquid crystal molecules 31 is more symmetric in the pixel 110. It is preferable.
- FIG. 6 shows the alignment state of the liquid crystal molecules 31 when a predetermined voltage (voltage equal to or higher than the threshold voltage) is applied between the pixel electrode 12 and the counter electrode 22.
- a predetermined voltage voltage equal to or higher than the threshold voltage
- the liquid crystal molecules 31 are radially formed on the pixel electrode 12 with respect to the center of the pixel electrode 12 or the pixel 110 as shown in FIG.
- An inclined liquid crystal domain is formed.
- the reason why such a liquid crystal domain having a radially inclined alignment is formed is that an alignment regulating force of an oblique electric field generated at the edge portion of the pixel electrode 12 acts on the liquid crystal molecules 31.
- the electric field generated at the edge of the pixel electrode 12 is tilted toward the center of the pixel electrode 12 and acts to tilt and align the liquid crystal molecules 31 radially.
- the protrusions 23 are provided on the counter substrate 20, the radial tilt alignment of the liquid crystal molecules 31 can be stabilized.
- the protrusion 23 is made of a transparent dielectric material (for example, resin). Note that the protrusion 23 is not necessarily provided, and another alignment regulating structure (for example, an opening formed in the counter electrode 22) may be provided instead of the protrusion 23.
- the gap 15c is formed on the extension of the signal wiring 15, so that when the voltage is applied, Liquid crystal molecules 31 are maintained substantially perpendicular to the substrate surface. Therefore, it is possible to quickly and stably regulate the tilt alignment of the liquid crystal molecules 31 on the linear portion 15a with the liquid crystal molecules 31 as the center or boundary. At this time, the liquid crystal molecules 31 on the two linear portions 15a on both sides of the gap 15c are tilted and aligned with the liquid crystal molecules 31 on the gap 15c as a boundary so that the tilt directions are symmetrical to each other. The liquid crystal molecules 31 are prevented from being aligned in only one direction along the direction in which the wiring extends.
- a polymer structure 32 for defining the alignment direction of the liquid crystal molecules 31 is formed.
- a vertical alignment film 33 is obtained by previously mixing a polymerizable composition (polymerizable monomer or oligomer) into the liquid crystal material constituting the liquid crystal layer 30 and photopolymerizing the polymerizable composition. Formed on top.
- the polymer structure 32 has an alignment regulating force for causing the liquid crystal molecules 31 to be radially inclined and aligned, so that the liquid crystal molecules 31 around the polymer structure 32 are inclined in a voltage-free state when no voltage is applied. Is oriented (pretilt) in the same direction as. That is, by forming the polymer structure 32, the pretilt azimuth of the liquid crystal molecules 31 is regulated so as to match the radial tilt alignment at the time of voltage application even when no voltage is applied. Therefore, alignment stability and response characteristics are improved.
- a liquid crystal display panel 100a including a polymerizable composition in the liquid crystal layer 30 is prepared.
- Each of the TFT substrate 10 and the counter substrate 20 can be formed using various known methods.
- the polymerizable composition various materials (for example, materials disclosed in Patent Documents 4 to 7) used for forming a PSA polymer structure can be used.
- the polymer composition is polymerized by polymerizing the polymerizable composition in the liquid crystal layer 30 in a state where a predetermined voltage is applied to the liquid crystal layer 30 of the liquid crystal display panel 100a. 32 is formed.
- the polymerizable composition has photopolymerizability, and the polymerization is performed by irradiating the liquid crystal layer 30 with light (specifically, ultraviolet light). The irradiation intensity and irradiation time of light are appropriately set according to the polymerizable composition used.
- the polymerizable composition has thermal polymerizability, the polymerization may be performed by heating.
- AC driving to the liquid crystal layer 30 is performed as follows in the PSA process.
- the TFT is turned on by applying a gate-on voltage of +10 V from the scanning wiring 14 to the gate electrode of the TFT.
- a potential of 0 V (GND) is applied to the pixel electrode 12 through the signal wiring 15.
- the potential applied to the liquid crystal layer 30 is changed to + 4V and + 4V by periodically oscillating the potential of the counter electrode 22 to + 4V and ⁇ 4V.
- AC driving is performed to reverse the polarity to -4V.
- the potential of the auxiliary capacitance line 16 also vibrates according to the potential of the counter electrode 22.
- the liquid crystal display panel 100a including the polymer structure 32 shown in FIG. 2 is obtained.
- at least one of the scanning wiring 14 and the signal wiring 15 has the bent portion 15 b, and around the pixel 110, on the extension line of the scanning wiring 14 or the signal wiring 15.
- a gap 15c where no wiring exists is formed.
- the AC drive shown in FIG. 10C when the AC drive shown in FIG. 10C is performed, a difference is generated between the auxiliary capacitance wiring potential and the counter electrode potential, so that a potential difference in the substrate vertical direction is generated in the gap 15c, and the liquid crystal at that position is generated.
- the molecules 31 are tilted.
- the same potential can be applied between the upper and lower substrates at the position of the gap 15c. That is, 0 V is applied to the liquid crystal layer 30 above the gap 15c, and the liquid crystal molecules 31 on the gap 15c can be fixed perpendicularly to the substrate surface.
- the liquid crystal molecules 31 above the gaps 15c are maintained substantially perpendicular to the substrate surface, and the liquid crystal molecules 31 are used as centers or boundaries, It becomes possible to quickly and stably regulate the tilt alignment of the liquid crystal molecules 31 on the linear portion 15a.
- the liquid crystal molecules 31 on the two linear portions 15a on both sides of the gap 15c are tilted and aligned with the liquid crystal molecules 31 on the gap 15c as a boundary so that the tilt directions are symmetrical to each other.
- the liquid crystal molecules 31 are prevented from being aligned in only one direction along the direction in which the wiring extends. As a result, the alignment disorder of the liquid crystal molecules in the vicinity of the wiring as shown in FIGS. 12B and 12C is reduced, and the regulating force for realizing the ideal alignment shown in FIGS.
- a polymer structure 32 is provided.
- the liquid crystal display device 100 Since the liquid crystal display device 100 has the polymer structure 32 formed as described above, the polymer structure when no voltage is applied is displayed by the alignment regulating force (or alignment maintaining force) of the polymer structure 32 in the pixel during display.
- the liquid crystal molecules 31 near the object 32 can be oriented (pretilt) toward the center of the pixel. Therefore, the liquid crystal molecules 31 in the pixel at the time of voltage application can be uniformly tilted and aligned radially. As a result, alignment disturbance during display is reduced, and variations in alignment state between pixels are reduced, thereby preventing occurrence of roughness in display.
- the liquid crystal molecules 31 at the pixel boundary can be quickly aligned with symmetry by the alignment boundary forming force of the gap 15c itself formed by the bent portion 15b. Thereby, the liquid crystal molecules 31 inside the pixel are stably radially aligned in a shorter time.
- bent portion 15b on the auxiliary capacitance wiring 16 that does not affect the transmittance of the pixel, there can be obtained an advantage of preventing a decrease in transmittance due to the provision of the bent portion 15b.
- an unnecessary voltage application action that the bent portion 15b gives to the liquid crystal molecules 31 is prevented by the shielding effect of the pixel electrode 12. .
- FIG. 9A shows a micrograph when liquid crystal molecules are tilted and aligned in a liquid crystal display device of a reference example in which the bent portion 15b is not formed in the signal wiring 15, and FIG.
- the respective micrographs when the liquid crystal molecules are tilted and aligned in the liquid crystal display device 100 are shown.
- the two polarizing plates are arranged in a crossed Nicol state (a state in which the polarization axes are orthogonal to each other). In this arrangement, a region where the liquid crystal molecules are aligned perpendicular to the substrate and a region where the liquid crystal molecules are aligned in an orientation parallel or perpendicular to the polarization axis of the polarizing plate are observed as black.
- the region where the liquid crystal molecules are aligned in the direction inclined with respect to the polarization axis is observed brightly, and the region where the liquid crystal molecules are aligned in the direction forming an angle of 45 ° with respect to the polarization axis is the most. Observed brightly.
- the distribution of bright areas is different between some liquid crystal domains (portions surrounded by solid lines in the figure) and other liquid crystal domains. Yes. This indicates that variation occurs in the liquid crystal alignment state for each pixel.
- the liquid crystal display device 100 of the present embodiment as shown in FIG. 9B, bright areas are distributed in substantially the same manner in a plurality of liquid crystal domains. This indicates that the liquid crystal alignment state for each pixel is substantially uniform.
- more ideal alignment of liquid crystal molecules is stably realized, so that a high-quality display in which display roughness is prevented can be provided.
- the polymer structure 32 can store an ideal radial alignment state.
- the left dark line in the red pixel the pixel surrounded by the upper solid line
- the right dark line in the blue sub-pixel the pixel surrounded by the lower solid line.
- a dark line (black line) curved downward was observed, which appeared due to abnormal alignment of liquid crystal molecules.
- FIG. 9B showing the display state according to the present embodiment the alignment of the liquid crystal molecules is stabilized by providing the bent portion 15b and the gap 15c in the wiring. Therefore, the alignment disorder as shown in FIG. 9A does not appear, and the left and right dark lines in each pixel uniformly extend stably in the left-right direction.
- more ideal radial alignment of liquid crystal molecules is realized at the time of display, and display roughness is reduced.
- the present invention relates to a liquid crystal display device that includes a vertical alignment type liquid crystal layer, and in which a plurality of regions in which liquid crystal molecules are inclined in different directions when a voltage is applied to the liquid crystal layer (that is, alignment division type) It can be used widely, and for example, it is also suitably used for an MVA mode liquid crystal display device.
- the liquid crystal display device 100 which has the polymer structure 32 which is an orientation maintenance layer
- the liquid crystal display device which does not have an orientation control layer except the polymer structure 32 from the liquid crystal display device 100 is also available. It is contained in embodiment by this invention. Even in such an embodiment, the liquid crystal molecules 31 on the wiring are stably aligned with the liquid crystal molecules 31 on the gaps 15c as a base point at the time of display, and the liquid crystal molecules 31 in the pixels are directed toward the center of the pixel. More ideal radial alignment can be achieved.
- the liquid crystal display device according to the present invention is suitably used as a liquid crystal display device from small to large, such as a mobile phone, PDA, notebook PC, monitor, and television receiver.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Liquid Crystal (AREA)
Abstract
Description
11 透明基板
12 画素電極
13 TFT
14 走査配線
15 信号配線
15a 線状部
15b 屈曲部
15c 間隙
16 補助容量配線
17 補助容量電極
18 絶縁層
19 補助容量対向電極
20 対向基板
21 透明基板
22 対向電極
23 突起(凸部)
30 液晶層
31 液晶分子
32 ポリマー構造物(配向制御層)
33 垂直配向膜
100a 液晶表示パネル
100 液晶表示装置
110 画素
Claims (15)
- 第1方向及び前記第1方向とは異なる第2方向に沿ってマトリクス状に配置された複数の画素を有し、
前記複数の画素のそれぞれに対応して配置された薄膜トランジスタ及び画素電極と、概ね前記第1方向に延び、前記薄膜トランジスタに表示信号を供給する信号配線と、概ね前記第2方向に延び、前記薄膜トランジスタにゲート信号を供給する走査配線とを有するTFT基板と、
前記画素電極に対向する対向電極を有する対向基板と、
前記TFT基板と前記対向基板との間に配置された液晶層と、
前記TFT基板及び前記対向基板の少なくとも一方の前記液晶層側の面に形成された、前記液晶層に含まれる液晶分子を基板面に略垂直に配向させるための配向膜と、を備え、
前記信号配線及び前記走査配線の少なくとも一方が、隣り合う2つの画素の境界において前記第1方向または前記第2方向に直線状に延びる2つの線状部と、前記2つの線状部の間に配置され、前記2つの線状部の延長線上から逸れて延びる屈曲部と、を有する、液晶表示装置。 - 前記TFT基板が前記第2方向に延びる補助容量配線を備え、
前記信号配線が前記2つの線状部と前記屈曲部とを有し、
基板鉛直方向から見た場合、前記屈曲部が前記補助容量配線と重なる位置に形成されている、請求項1に記載の液晶表示装置。 - 基板鉛直方向から見た場合、前記屈曲部の少なくとも一部が前記画素電極と重なる位置に形成されている、請求項1または2に記載の液晶表示装置。
- 前記2つの線状部の間の前記2つの線状部の延長線上には、前記信号配線及び前記走査配線が形成されていない、請求項1から3のいずれかに記載の液晶表示装置。
- 前記屈曲部が、画素の一辺の中央に位置する、請求項1から4のいずれかに記載の液晶表示装置。
- 前記屈曲部によって、前記信号配線又は前記走査配線と前記対向電極との間に電位差が生じた時、液晶分子の配向方向が基板面に対して略垂直に維持される領域が形成される、請求項1から5のいずれかに記載の液晶表示装置。
- 前記屈曲部によって、前記信号配線又は前記走査配線と前記対向電極との間に電位差が生じた場合に、前記2つの画素の境界上に、前記信号配線又は前記走査配線に沿った液晶配向の境界が形成される、請求項1から5のいずれかに記載の液晶表示装置。
- 前記配向膜の前記液晶層側に形成され、前記液晶分子の基板面に対する配向方向を規定する配向維持層を備えた、請求項1から7のいずれかに記載の液晶表示装置。
- 前記配向維持層が、前記液晶層に含まれる重合性組成物を重合することによって形成されたポリマー構造物からなる、請求項8に記載の液晶表示装置。
- 第1方向及び前記第1方向とは異なる第2方向に沿ってマトリクス状に配置された複数の画素を有し、
前記複数の画素のそれぞれに対応して配置された薄膜トランジスタ及び画素電極と、概ね前記第1方向に延び、前記薄膜トランジスタに表示信号を供給する信号配線と、概ね前記第2方向に延び、前記薄膜トランジスタにゲート信号を供給する走査配線とを有するTFT基板と、
前記画素電極に対向する対向電極を有する対向基板と、
前記TFT基板と前記対向基板との間に配置された液晶層と、
前記TFT基板及び前記対向基板の少なくとも一方の前記液晶層側の面に形成され、前記液晶層に含まれる液晶分子を基板面に略垂直に配向させるための配向膜と、を備え、
隣り合う2つの画素の境界上に、前記信号配線又は前記走査配線と前記対向電極との間に電位差が生じた場合に、液晶分子の配向方向が基板面に対して略垂直に維持される領域が形成されている、液晶表示装置。 - 前記領域において略垂直に維持された液晶分子によって、前記信号配線又は前記走査配線と前記対向電極との間に電位差が生じた場合に、前記2つの画素の境界上に、前記信号配線又は前記走査配線に沿った方向における液晶配向の境界が形成される、請求項10に記載の液晶表示装置。
- 前記信号配線及び前記走査配線の少なくとも一方が、前記2つの画素の境界において前記第1方向または前記第2方向に直線状に延びる2つの線状部と、前記2つの線状部の間に配置され、前記領域を迂回して延びる屈曲部とを有する、請求項10または11に記載の液晶表示装置。
- 第1方向及び前記第1方向とは異なる第2方向に沿ってマトリクス状に配置された複数の画素を有し、
前記複数の画素のそれぞれに対応して配置された薄膜トランジスタ及び画素電極と、概ね前記第1方向に延び、前記薄膜トランジスタに表示信号を供給する信号配線と、概ね前記第2方向に延び、前記薄膜トランジスタにゲート信号を供給する走査配線とを有するTFT基板と、
前記画素電極に対向する対向電極を有する対向基板と、
前記TFT基板と前記対向基板との間に配置された液晶層と、
前記TFT基板及び前記対向基板の少なくとも一方の前記液晶層側の面に形成され、前記液晶層に含まれる液晶分子を基板面に略垂直に配向させるための配向膜と、を備えた液晶表示装置の製造方法であって、
重合性組成物を含む前記液晶層が前記TFT基板と前記対向基板との間に配置された液晶表示パネルを用意する工程と、
前記液晶層に電圧が印加された状態で、前記液晶層の中の重合性組成物を重合することによって、前記配向膜の前記液晶層側に配向維持層を形成する重合工程と、を含み、
前記重合工程において、隣り合う2つの画素の境界上に、液晶分子の配向方向が基板面に対して略垂直に維持される領域が存在している製造方法。 - 前記重合工程において、前記領域において略垂直に維持された液晶分子によって、前記2つの画素の境界上に、前記信号配線又は前記走査配線に沿った方向における液晶配向の配向境界が形成される、請求項13に記載の製造方法。
- 前記信号配線及び前記走査配線の少なくとも一方に、前記2つの画素の境界において前記第1方向または前記第2方向に直線状に延びる2つの線状部と、前記2つの線状部の間に配置され、前記領域を迂回して延びる屈曲部とが形成されている、請求項13または14に記載の製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801450421A CN102209931A (zh) | 2008-11-11 | 2009-11-09 | 液晶显示装置和液晶显示装置的制造方法 |
US13/128,514 US20110216262A1 (en) | 2008-11-11 | 2009-11-09 | Liquid crystal display device and method for manufacturing liquid crystal display device |
EP09825887A EP2348355A4 (en) | 2008-11-11 | 2009-11-09 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR MANUFACTURING LIQUID CRYSTAL DISPLAY DEVICE |
JP2010537682A JPWO2010055633A1 (ja) | 2008-11-11 | 2009-11-09 | 液晶表示装置及び液晶表示装置の製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-289152 | 2008-11-11 | ||
JP2008289152 | 2008-11-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010055633A1 true WO2010055633A1 (ja) | 2010-05-20 |
Family
ID=42169779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/005952 WO2010055633A1 (ja) | 2008-11-11 | 2009-11-09 | 液晶表示装置及び液晶表示装置の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110216262A1 (ja) |
EP (1) | EP2348355A4 (ja) |
JP (1) | JPWO2010055633A1 (ja) |
CN (1) | CN102209931A (ja) |
WO (1) | WO2010055633A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI790799B (zh) * | 2021-11-01 | 2023-01-21 | 友達光電股份有限公司 | 顯示裝置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202351591U (zh) * | 2011-12-01 | 2012-07-25 | 京东方科技集团股份有限公司 | 一种阵列基板及液晶显示器 |
KR102401621B1 (ko) * | 2015-07-23 | 2022-05-25 | 삼성디스플레이 주식회사 | 액정 표시 장치 및 그 제조 방법 |
WO2018066459A1 (ja) * | 2016-10-04 | 2018-04-12 | Jsr株式会社 | 液晶装置及びその製造方法 |
CN107450240B (zh) * | 2017-09-19 | 2020-06-16 | 惠科股份有限公司 | 阵列基板及其显示面板 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11242225A (ja) | 1997-06-12 | 1999-09-07 | Fujitsu Ltd | 液晶表示装置 |
JP2002023199A (ja) | 2000-07-07 | 2002-01-23 | Fujitsu Ltd | 液晶表示装置およびその製造方法 |
JP2002202511A (ja) | 2000-10-31 | 2002-07-19 | Sharp Corp | 液晶表示装置 |
JP2003043525A (ja) | 2000-08-11 | 2003-02-13 | Sharp Corp | 液晶表示装置 |
JP2003149647A (ja) | 2001-08-31 | 2003-05-21 | Fujitsu Display Technologies Corp | 液晶表示装置及びその製造方法 |
JP2003177408A (ja) | 2001-10-02 | 2003-06-27 | Fujitsu Display Technologies Corp | 液晶表示装置およびその製造方法 |
JP2003307720A (ja) | 2002-04-16 | 2003-10-31 | Fujitsu Ltd | 液晶表示装置 |
JP2006133619A (ja) * | 2004-11-08 | 2006-05-25 | Sharp Corp | 液晶表示装置及びその製造方法 |
JP2008145700A (ja) * | 2006-12-08 | 2008-06-26 | Sharp Corp | 液晶表示装置およびその製造法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI299099B (en) * | 2000-03-30 | 2008-07-21 | Sharp Kk | Active matrix type liquid crystal display apparatus |
US6778229B2 (en) * | 2001-10-02 | 2004-08-17 | Fujitsu Display Technologies Corporation | Liquid crystal display device and method of fabricating the same |
KR101006436B1 (ko) * | 2003-11-18 | 2011-01-06 | 삼성전자주식회사 | 표시 장치용 박막 트랜지스터 표시판 |
KR101300184B1 (ko) * | 2006-08-03 | 2013-08-26 | 삼성디스플레이 주식회사 | 액정 표시 장치 |
WO2008075549A1 (ja) * | 2006-12-18 | 2008-06-26 | Sharp Kabushiki Kaisha | 液晶表示装置 |
-
2009
- 2009-11-09 CN CN2009801450421A patent/CN102209931A/zh active Pending
- 2009-11-09 EP EP09825887A patent/EP2348355A4/en not_active Withdrawn
- 2009-11-09 US US13/128,514 patent/US20110216262A1/en not_active Abandoned
- 2009-11-09 WO PCT/JP2009/005952 patent/WO2010055633A1/ja active Application Filing
- 2009-11-09 JP JP2010537682A patent/JPWO2010055633A1/ja active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11242225A (ja) | 1997-06-12 | 1999-09-07 | Fujitsu Ltd | 液晶表示装置 |
JP2002023199A (ja) | 2000-07-07 | 2002-01-23 | Fujitsu Ltd | 液晶表示装置およびその製造方法 |
JP2003043525A (ja) | 2000-08-11 | 2003-02-13 | Sharp Corp | 液晶表示装置 |
JP2002202511A (ja) | 2000-10-31 | 2002-07-19 | Sharp Corp | 液晶表示装置 |
JP2003149647A (ja) | 2001-08-31 | 2003-05-21 | Fujitsu Display Technologies Corp | 液晶表示装置及びその製造方法 |
JP2003177408A (ja) | 2001-10-02 | 2003-06-27 | Fujitsu Display Technologies Corp | 液晶表示装置およびその製造方法 |
JP2003307720A (ja) | 2002-04-16 | 2003-10-31 | Fujitsu Ltd | 液晶表示装置 |
JP2006133619A (ja) * | 2004-11-08 | 2006-05-25 | Sharp Corp | 液晶表示装置及びその製造方法 |
JP2008145700A (ja) * | 2006-12-08 | 2008-06-26 | Sharp Corp | 液晶表示装置およびその製造法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2348355A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI790799B (zh) * | 2021-11-01 | 2023-01-21 | 友達光電股份有限公司 | 顯示裝置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2010055633A1 (ja) | 2012-04-12 |
EP2348355A1 (en) | 2011-07-27 |
EP2348355A4 (en) | 2012-05-30 |
CN102209931A (zh) | 2011-10-05 |
US20110216262A1 (en) | 2011-09-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6573965B1 (en) | Multi-domain wide viewing angle liquid crystal display having slits on electrodes and bumps above the slits | |
US20090135361A1 (en) | Systems for Displaying Images Involving Alignment Liquid Crystal Displays | |
US9575364B2 (en) | Liquid crystal display | |
US7995887B2 (en) | Liquid crystal display device and electronic device using the same | |
JP2006201451A (ja) | 液晶表示装置 | |
JP4460488B2 (ja) | 液晶表示装置及びその製造方法 | |
WO2014017329A1 (ja) | 液晶表示装置 | |
KR20070007722A (ko) | 멀티 도메인 수직 배향형 액정 디스플레이 장치 | |
US20070013849A1 (en) | Multi-domain vertical alignment liquid crystal display | |
JP5450792B2 (ja) | 液晶表示装置 | |
WO2010055633A1 (ja) | 液晶表示装置及び液晶表示装置の製造方法 | |
WO2018138888A1 (ja) | 液晶表示装置 | |
JP5210677B2 (ja) | 液晶表示装置 | |
WO2010016224A1 (ja) | 液晶表示装置およびその製造方法 | |
JP4662947B2 (ja) | 液晶表示装置およびそれを備えた電子機器 | |
WO2010007761A1 (ja) | 液晶表示装置 | |
JP4759884B2 (ja) | 液晶表示装置 | |
US20030011734A1 (en) | Multi-domain liquid crystal display having bump structures with non-parallel boundaries | |
JP2009122254A (ja) | 液晶表示装置の製造方法 | |
JP2009122255A (ja) | 液晶表示装置の製造方法 | |
JP2010025988A (ja) | 液晶表示装置の製造方法および液晶表示装置 | |
JP4629160B2 (ja) | 液晶表示装置 | |
KR20000073288A (ko) | 액정표시소자 | |
KR100768195B1 (ko) | Ocb 액정표시패널 | |
JP2006023416A (ja) | 液晶配向用基板 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980145042.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09825887 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2010537682 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13128514 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: 2009825887 Country of ref document: EP |