WO2006114933A1 - Dispositif d’affichage a cristaux liquides - Google Patents

Dispositif d’affichage a cristaux liquides Download PDF

Info

Publication number
WO2006114933A1
WO2006114933A1 PCT/JP2006/303601 JP2006303601W WO2006114933A1 WO 2006114933 A1 WO2006114933 A1 WO 2006114933A1 JP 2006303601 W JP2006303601 W JP 2006303601W WO 2006114933 A1 WO2006114933 A1 WO 2006114933A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
sub
display device
crystal display
pixel electrode
Prior art date
Application number
PCT/JP2006/303601
Other languages
English (en)
Japanese (ja)
Inventor
Tooru Sonoda
Kazuyoshi Fujioka
Katsuya Ogawa
Masaaki Saitoh
Original Assignee
Sharp Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Publication of WO2006114933A1 publication Critical patent/WO2006114933A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—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
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells

Definitions

  • the present invention relates to a liquid crystal display device, and more particularly to a vertical alignment type liquid crystal display device having a wide viewing angle.
  • An active matrix liquid crystal display device has a switching element such as a TFT (Thin Film Transistor) for each pixel, which is the minimum unit of an image, and can display a fine image. Widely used.
  • a TN (Twisted Nematic) type display method is often used. This TN-type liquid crystal display device changes the orientation direction of the two upper and lower alignment films in contact with the liquid crystal layer formed by the liquid crystal molecules so that the liquid crystal molecules are twisted when no voltage is applied. Is configured.
  • the TN type liquid crystal display device has a problem that the viewing angle characteristics are different depending on the viewing direction and the viewing angle is narrow. Therefore, in order to solve this viewing angle problem, a vertical alignment type display system using liquid crystal molecules having a negative dielectric anisotropy ( ⁇ ⁇ 0) has been proposed (for example, Patent Document 1, (See 2 and 3 etc.)
  • FIG. 17 to FIG. 20 illustrate liquid crystal display devices of the vertical alignment type display method.
  • FIG. 17 is a plan view of the active matrix substrate 120 constituting the transmissive liquid crystal display device 150
  • FIG. 18 is a cross-sectional view of the liquid crystal display device 150 taken along line XVIII-XVIII in FIG. It is.
  • FIG. 19 is a plan view of the active matrix substrate 120 constituting the transflective liquid crystal display device 150 having a transmissive region and a reflective region
  • FIG. 20 is a liquid crystal along the line XX-XX in FIG. 4 is a cross-sectional view of display device 150.
  • FIG. 17 is a plan view of the active matrix substrate 120 constituting the transmissive liquid crystal display device 150
  • FIG. 18 is a cross-sectional view of the liquid crystal display device 150 taken along line XVIII-XVIII in FIG. It is.
  • FIG. 19 is a plan view of the active matrix substrate 120 constituting the transflective liquid crystal display device 150 having a transmis
  • These liquid crystal display devices 150 are composed of an active matrix substrate 120, a counter substrate 130, and a liquid crystal layer 140 sandwiched between the substrates 120 and 130.
  • the active matrix substrate 120 includes a gate line 101 extending in parallel to each other and a source line 104 force extending in a direction orthogonal to the gate line 101 on the insulating substrate 110a. It is. Between each gate line 101, a TFT 105 is provided at each intersection of the capacity line 10 lb force gate line 101 and the source line 104 extending in parallel with the gate line 101. In addition, in each display region surrounded by a pair of adjacent gate lines 101 and a pair of adjacent source lines 104, a total of 10 subpixel electrodes 109a in 5 rows ⁇ 2 columns and each subpixel electrode A pixel electrode 109 configured by a connecting portion 109b that connects the portions 109a is provided. Further, in the transflective active matrix substrate 120 shown in FIGS. 19 and 20, the reflective electrode 114 serving as a reflective region is provided on the sub-pixel electrode 109a on the capacitor line 101b.
  • the counter substrate 130 is provided with a color filter layer 111 and a common electrode 112 stacked in order on an insulating substrate 110b.
  • an alignment regulating portion (hereinafter referred to as “rivet”) 113 protruding in an island shape is provided so as to be arranged at the center of each sub-pixel electrode 109a.
  • a resin layer 116 for compensating for the optical path difference between the reflective region and the transmissive region is provided at a position corresponding to the reflective electrode 114.
  • rivets 113 formed on the counter substrate 130 are also illustrated.
  • the liquid crystal layer 140 includes nematic liquid crystal molecules 115 having electro-optical characteristics.
  • the liquid crystal display device 150 having such a configuration, since the dielectric anisotropy of the liquid crystal molecules 115 is negative, the liquid crystal in the vicinity of each rivet 113 when no voltage is applied to the liquid crystal layer 140. Only the molecules 115 are tilted radially with the rivet 113 as the center, and the liquid crystal molecules 115 apart from the other rivets 113 are aligned substantially perpendicular to the surface of the active matrix substrate 120 (counter substrate 130). . Then, when a voltage is applied to the liquid crystal layer 140, the liquid crystal molecules 115 that are separated from the rivets 113 are also aligned so as to match the above-mentioned radial tilt alignment when V is turned.
  • the pixel electrode 109 is divided into a plurality of sub-pixel electrodes 109a, the liquid crystal molecules 115 are radially inclined and aligned for each sub-pixel electrode 109a. Therefore, the viewing angle characteristics during image display are uniform over all directions, and the viewing angle is widened.
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-264784
  • Patent Document 2 Japanese Patent Laid-Open No. 2003-167253
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2004-69767
  • the pixel electrode 109 is composed of a plurality of sub-pixel electrodes 109a as in the liquid crystal display device 150, the size force of each sub-pixel electrode 109a is an element that determines the aperture ratio and response speed of the pixel. ing. Specifically, it is considered that the sub pixel electrode 109a formed larger improves the aperture ratio of the pixel, and the sub pixel electrode 109a formed smaller improves the response speed.
  • connection unit that connects the sub-pixel electrodes 109a so that the sub-pixel electrodes 109a that can optimize the aperture ratio and response speed of the pixels can be freely arranged. Study was carried out.
  • one large rectangular sub-pixel electrode and two small rectangular sub-pixel electrodes are connected via a connecting portion that extends perpendicularly from opposite sides.
  • a liquid crystal display device was investigated. However, depending on the position of the connecting portion in each subpixel electrode, the alignment of liquid crystal molecules may be disturbed in the vicinity of the connecting portion of each subpixel electrode.
  • FIG. 5 is a plan view showing the alignment state of liquid crystal molecules 115 when a voltage is applied to a liquid crystal layer in a liquid crystal display device connected through a liquid crystal display device.
  • the liquid crystal molecule 115 in the sub-pixel electrode 109a has a rivet 11 as shown in FIGS. 21 and 22 when a voltage is applied to the liquid crystal layer. Oriented radially with 3 twisted around.
  • the liquid crystal molecules 115 on the connecting portion 109b try to align along the extending direction of the connecting portion 109b. Therefore, as shown in FIG. 21, when the orientation of the liquid crystal molecules 115 is affected by the connecting portion 109b on the left side in the figure, As shown in FIG. 22, when the alignment of the liquid crystal molecules 115 is affected by the connecting portion 109b on the right side in the drawing, the alignment disturbance is induced in the region Y. .
  • the degree of the alignment disorder of the liquid crystal molecules 115 varies from pixel to pixel due to various factors such as dimensional variations during pattern formation and variations in electric field distribution during the production of a liquid crystal display device.
  • the alignment state of the liquid crystal molecules 115 differs from pixel to pixel, so that the liquid crystal display device is visually recognized as a rough surface.
  • the liquid crystal molecules 115 are aligned radially around the rivets 113, so that it is considered that the above-mentioned alignment disorder occurs.
  • the present invention has been made in view of the strong point, and an object of the present invention is to connect a vertical alignment type liquid crystal display device in which sub-pixel electrodes having different sizes are connected to each other. This is to suppress the alignment disorder of the liquid crystal molecules.
  • each sub-pixel electrode is connected via a connection portion formed by each branch portion extending in the radial alignment direction of liquid crystal molecules in each sub-pixel electrode. It is what I did.
  • the liquid crystal display device includes an active matrix substrate in which a plurality of pixel electrodes are provided in a matrix, a counter substrate disposed to face the active matrix substrate, and the active A liquid crystal display device provided between a matrix substrate and a counter substrate and provided with a vertically aligned liquid crystal layer, wherein each of the pixel electrodes includes at least a first sub-pixel electrode and the first sub-pixel electrode.
  • the liquid crystal molecules of the liquid crystal layer are connected to each other via a connecting portion and are larger than the first sub pixel electrode, and the liquid crystal molecules of the liquid crystal layer have the voltage applied to the liquid crystal layer.
  • Each sub-pixel electrode and second sub-pixel are configured so as to form a radial orientation for each electrode, and the connecting portion is the first sub-pixel when viewed from the normal direction of the active matrix substrate.
  • a first branch portion extending in the radial alignment direction of the liquid crystal molecules at the pole, and a second branch portion extending in the radial alignment direction of the liquid crystal molecules in the second subpixel electrode.
  • each branch portion constituting the coupling portion is a liquid crystal in each sub-pixel electrode. Formed to extend in the radial direction of the molecule! Therefore, when a voltage is applied to the liquid crystal layer, that is, when the liquid crystal molecules are radially aligned in each subpixel electrode, the liquid crystal molecules that are affected by the connection portion in each subpixel electrode, that is, the connection portion
  • the orientation direction of the liquid crystal molecules in the vicinity of the liquid crystal molecules and the orientation direction of the liquid crystal molecules in each branch portion constituting the connecting portion are almost the same. Therefore, the alignment disorder of the liquid crystal molecules in the vicinity of the connecting portion of each subpixel electrode is suppressed.
  • the disorder of the alignment of the liquid crystal molecules due to the connection is suppressed.
  • subpixel electrodes having different sizes can be connected while suppressing disorder of alignment of liquid crystal molecules, a liquid crystal display device having a desired pixel aperture ratio and response speed can be obtained.
  • an alignment regulating portion that regulates the alignment direction of the liquid crystal molecules may be provided.
  • each branch portion constituting the coupling portion is formed in the radiation direction centering on the alignment regulating portion, and therefore when a voltage is applied to the liquid crystal layer, that is, each subpixel.
  • the alignment direction of the liquid crystal molecules in the vicinity of the connection portion in each subpixel electrode and the alignment direction of the liquid crystal molecules in each branch portion constituting the connection portion Will almost match.
  • the first sub-pixel electrode and the second sub-pixel electrode are formed in a rectangular shape, and the two first sub-pixel electrodes are arranged in a line along one side of the second sub-pixel electrode.
  • the connecting portion may be formed in a three-pronged shape so as to connect each of the first sub-pixel electrodes and the second sub-pixel electrode.
  • the first sub-pixel electrode formed small improves the response speed
  • the second sub-pixel electrode formed large improves the aperture ratio of the pixel.
  • Each of the sub-pixel electrode connection portions is formed by a three-pronged connection portion formed by two first branch portions extending from each first sub-pixel electrode force and one second branch portion extending from the second sub-pixel electrode force. Since the alignment direction of the liquid crystal molecules in the vicinity and the alignment direction of the liquid crystal molecules in each branch part constituting the connection portion are almost the same, the alignment direction of each subpixel electrode is in the vicinity of the connection portion. The alignment disorder of the liquid crystal molecules is suppressed. Therefore, the desired aperture ratio and response speed of the pixel can be obtained while suppressing the alignment disorder of the liquid crystal molecules.
  • a columnar spacer portion provided on the counter substrate on the liquid crystal layer side is sandwiched, and the columnar spacer portion is connected to each first sub substrate. Arranged between the pixel electrodes.
  • the two aligned first subpixel electrodes are connected by the trident connecting portion, and therefore, the columnar space is provided between the two first subpixel electrodes. Even if the spacer portion is arranged, contact between the connecting portion and the columnar spacer portion is suppressed.
  • a switching element is provided on the opposite side of each pixel electrode from the liquid crystal layer side via an insulating layer, and each first sub-pixel electrode is connected via a contact hole formed in the insulating layer. Connected to the switching element, the position of the contact hole and the center position of the radial alignment of the liquid crystal molecules in each of the first sub-pixel electrodes overlap.
  • liquid crystal molecules may be oriented around a contact hole formed at the contact interface, but according to the above configuration, the center of radial orientation of the liquid crystal molecules in each first subpixel electrode. Since the position overlaps with the position of the contact hole connecting each subpixel electrode and the switching element, the alignment disorder of the liquid crystal molecules in each first subpixel electrode is suppressed.
  • Each of the first sub-pixel electrodes may be a reflective electrode that reflects light incident from the counter substrate side.
  • each first sub-pixel electrode is a reflective electrode, in the region where the first sub-pixel electrode is arranged, the alignment state of the liquid crystal molecules may affect the display quality.
  • Possible force since the center position of the radial alignment of the liquid crystal molecules in each first sub-pixel electrode and the position of the contact hole match, the alignment disorder of the liquid crystal molecules in each first sub-pixel electrode Is suppressed, and deterioration of display quality is suppressed. The invention's effect
  • the sub-pixel electrodes are connected via the connecting portions formed by the branch portions extending in the radial alignment direction of the liquid crystal molecules in the sub-pixel electrodes.
  • the alignment direction of the liquid crystal molecules in the vicinity of the connecting portion in each sub-pixel electrode and the alignment direction of the liquid crystal molecules in each branch portion constituting the connecting portion substantially coincide.
  • the alignment disorder of the liquid crystal molecules in the vicinity of the connecting portion of each sub-pixel electrode can be suppressed. Therefore, in a vertically aligned liquid crystal display device in which sub-pixel electrodes having different sizes are connected, the connecting It is possible to suppress the disorder of the alignment of the liquid crystal molecules caused by this.
  • FIG. 1 is a plan view of an active matrix substrate 20 constituting a liquid crystal display device 50 of Embodiment 1.
  • FIG. 1 is a plan view of an active matrix substrate 20 constituting a liquid crystal display device 50 of Embodiment 1.
  • FIG. 2 is a cross-sectional view of the liquid crystal display device 50 taken along line II-II in FIG.
  • FIG. 3 is a plan view showing an alignment state of liquid crystal molecules 15 in a sub pixel electrode 9a formed to be small.
  • FIG. 4 is a plan view showing the alignment state of the liquid crystal molecules 15 in the sub pixel electrode 9c formed large.
  • FIG. 5 is a plan view of an active matrix substrate 20 according to a modification of the first embodiment.
  • FIG. 6 is a plan view of an active matrix substrate 20a that is an example of the first embodiment.
  • FIG. 7 is a plan view of an active matrix substrate 20b that is an example of the first embodiment.
  • FIG. 8 is a plan view of an active matrix substrate 20c that is an example of the first embodiment.
  • FIG. 9 is a plan view of an active matrix substrate 20d that is an example of the first embodiment.
  • FIG. 10 is a graph showing the aperture ratio and response speed of a pixel in each liquid crystal display device having active matrix substrates 20a to 20d.
  • FIG. 11 is a plan view of an active matrix substrate 20 constituting the liquid crystal display device 50 of Embodiment 2.
  • FIG. 12 is a cross-sectional view of the liquid crystal display device 50 taken along line XII-XII in FIG.
  • FIG. 13 is a plan view of an active matrix substrate 20 constituting the liquid crystal display device 50 of Embodiment 3.
  • FIG. 14 is a cross-sectional view of the liquid crystal display device 50 taken along line XIV—XIV in FIG.
  • FIG. 15 is a plan view of an active matrix substrate 20 constituting the liquid crystal display device of Embodiment 4.
  • FIG. 16 is a cross-sectional view of the liquid crystal display device 50 taken along line XVI--XVI in FIG.
  • FIG. 17 is a plan view of an active matrix substrate 120 constituting a conventional transmissive liquid crystal display device 150.
  • FIG. 18 is a cross-sectional view of liquid crystal display device 150 taken along line XVIII-XVIII in FIG.
  • FIG. 19 is a plan view of an active matrix substrate 120 constituting a conventional transflective liquid crystal display device 150.
  • FIG. 20 is a cross-sectional view of liquid crystal display device 150 taken along line XX—XX in FIG.
  • FIG. 21 is a first plan view showing the alignment state of conventional liquid crystal molecules 115.
  • FIG. 22 is a second plan view showing the alignment state of conventional liquid crystal molecules 115.
  • FIG. 23 is a liquid crystal display device which is a comparative example with respect to the liquid crystal display device 50 of the second embodiment.
  • FIG. 2 is a plan view of an active matrix substrate 120 constituting 150.
  • FIG. 24 is a cross-sectional view of liquid crystal display device 150 taken along line XXIV—XXIV in FIG.
  • FIG. 25 is a liquid crystal display device which is a comparative example with respect to the liquid crystal display device 50 of the fourth embodiment.
  • FIG. 2 is a plan view of an active matrix substrate 120 constituting 150.
  • FIG. 26 is a cross-sectional view of liquid crystal display device 150 taken along line XXVI-XXVI in FIG.
  • FIG. 1 is a plan view of the active matrix substrate 20 constituting the liquid crystal display device 50 of Embodiment 1
  • FIG. 2 is a cross-sectional view of the liquid crystal display device 50 taken along line II-II in FIG. FIG. 1
  • a rivet 13 formed on a counter substrate 30 described later is also shown.
  • the liquid crystal display device 50 includes an active matrix substrate 20 and a counter substrate 30 that are disposed to face each other, and a liquid crystal layer 40 sandwiched between the substrates 20 and 30. And.
  • the active matrix substrate 20 has a gate line 1 provided on the insulating substrate 10a so as to extend in parallel with each other, and extends in parallel with each other in a direction orthogonal to each gate line 1. Extending in parallel between the source line 4 and the gate line 1 For each display region surrounded by the capacitor line lb provided in the gate line, the TFT 5 provided at each intersection of the gate line 1 and the source line 4, and the pair of adjacent gate lines 1 and the pair of adjacent source lines 4. And a pixel electrode 9 provided.
  • each pixel electrode 9 includes two sub-pixel electrodes 9d formed in a rectangular shape on the capacitor line lb, and an upper portion across the sub-pixel electrodes 9d. And two sub-pixel electrodes (first sub-pixel electrodes) 9 a formed in a rectangular shape in parallel with each other on the lower portion and the upper portion of the sub-pixel electrode 9 a formed on the upper portion, and the lower side
  • the sub-pixel electrodes 9a, 9c, and 9d are not limited to those having four rectangular corners formed at right angles, but may have a circular arc shape or a cut shape. Different circular shapes may be used.
  • the TFT 5 includes a gate electrode la that is a protruding portion of the gate line 1, a gate insulating film 2 provided so as to cover the gate electrode la, and a gate electrode on the gate insulating film 2.
  • a semiconductor layer 3 provided at a position corresponding to la, and a source electrode 4a and a drain electrode 4b which are provided so as to face each other on the semiconductor layer 3 and are protruding portions of the source line 4 are provided.
  • the drain electrode 4b extends to a region where the capacitor line lb is disposed, and is configured to form an auxiliary capacitor with the capacitor line lb.
  • the active matrix substrate 20 includes a protective layer 6 provided so as to cover the TFT 5 having the above configuration, and an insulating layer 7 provided so as to cover the protective layer 6.
  • a contact hole 8 is formed on the capacitance line lb, and the drain electrode 4b and the sub-pixel electrode 9d are connected via the contact hole 8.
  • the counter substrate 30 is provided with a color filter layer 11 and a common electrode 12 laminated in order on an insulating substrate 10b.
  • a rivet 13 that is an alignment regulating portion protruding in an island shape is provided so as to be arranged at the center of each of the subpixel electrodes 9 a, 9 c, and 9 d. It is.
  • the liquid crystal layer 40 includes liquid crystal molecules 15 that also have a nematic liquid crystal force.
  • the liquid crystal molecules 15 have electro-optical characteristics and negative dielectric anisotropy ( ⁇ ⁇ 0).
  • the connecting portion 9b connects the sub-pixel electrodes 9a (9d) formed to be small in two directions, and extends vertically from the central portion of one side of each sub-pixel electrode 9a (9d). .
  • the connecting portion 9b is arranged on a line connecting the rivets 13 formed for each of the sub-pixel electrodes 9a (9d).
  • the connecting portion 9e connects the two sub-pixel electrodes 9a formed small and the sub-pixel electrode 9c formed large in three directions, and has two first branches extending from each sub-pixel electrode 9a.
  • a portion 9a ′ and a second branch portion 9c ′ extending from the sub-pixel electrode 9c are configured.
  • the first branch portion 9a is formed in a direction extending radially from the rivet 13 which is the center position of the radial alignment of the liquid crystal molecules 15 in the sub-pixel electrode 9a
  • the second branch portion 9c ′ is formed of the sub-pixel electrode 9c.
  • the liquid crystal molecules 15 are formed in a direction extending radially from the rivet 13 which is the center position of the radial alignment of the liquid crystal molecules 15.
  • the connecting portion between the two sub-pixel electrodes 9a formed small and the sub-pixel electrode 9c formed large may be a connecting portion 9f as shown in FIG. .
  • the connecting portion 9f is disposed on a line connecting the rivet 13 of each sub-pixel electrode 9a and the rivet 13 of the sub-pixel electrode 9c, and the sub-pixel electrode 9a side is a first branch portion.
  • the sub-pixel electrode 9c side is the second branch.
  • the liquid crystal display device 50 having such a configuration, one pixel is formed for each pixel electrode 9, and in each pixel, a gate signal is sent from the gate line 1 to the gate electrode la, and TFT5 Is turned on, a source signal is sent from the source line 4 to the source electrode 4a, and the pixel electrode 9, that is, each of the sub-pixel electrodes 9a, 9c, and 9d is transmitted through the semiconductor layer 3 and the drain electrode 4b.
  • a predetermined charge is written in At this time, a potential difference is generated between the pixel electrode 9 and the common electrode 12, and a predetermined voltage is applied to the liquid crystal layer 40. Then, by changing the alignment state of the liquid crystal molecules 15 according to the voltage applied to the liquid crystal layer 40, the light transmittance of the liquid crystal layer 40 is adjusted to display an image.
  • the dielectric anisotropy of the liquid crystal molecules 15 is negative.
  • the liquid crystal molecules 15 in the vicinity of each rivet 13 are radially inclined with respect to the rivet 13, and the liquid crystal molecules 15 separated from the other rivets 13 are aligned. Oriented substantially perpendicular to the surface of the active matrix substrate 20. Then, when a voltage is applied to the liquid crystal layer 40, it is considered that the liquid crystal molecules separated from the rivets 13 are aligned so as to match the radial tilt alignment.
  • the pixel electrode 9 is divided into a plurality of subpixel electrodes 9a, 9c, and 9d, the liquid crystal molecules 15 are radially inclined and aligned for each of the subpixel electrodes 9a, 9c, and 9d. Therefore, the viewing angle characteristics when displaying an image are uniform over all directions, and the viewing angle can be widened.
  • the liquid crystal molecules 15 are centered on the rivet 13 as shown in FIG. Oriented radially. Since the first branch portion 9a ′ constituting the connecting portion 9e is formed in the radial direction around the rivet 13 in each subpixel electrode 9a, the first branch portion 9a ′ of the subpixel electrode 9a The alignment direction of the liquid crystal molecules 15 in the vicinity and the alignment direction of the liquid crystal molecules 15 in the first branch portion 9a ′ substantially coincide. Therefore, the alignment disorder of the liquid crystal molecules 15 in the region A in the vicinity of the connecting portion 9e of the sub-pixel electrode 9a can be suppressed.
  • the liquid crystal molecules 15 are aligned radially around the rivet 13 as shown in FIG. To do. Since the second branch portion 9c ′ constituting the connecting portion 9e is formed in the radial direction centered on the rivet 13 in each subpixel electrode 9a, the vicinity of the second branch portion 9c ′ in the subpixel electrode 9c is formed. Thus, the alignment direction of the liquid crystal molecules 15 and the alignment direction of the liquid crystal molecules 15 in the second branch portion 9c ′ substantially coincide with each other. Therefore, the alignment disorder of the liquid crystal molecules 15 in the region B in the vicinity of the connecting portion 9e of the sub-pixel electrode 9a can be suppressed.
  • the liquid crystal display device 50 is manufactured by sequentially performing the following active matrix substrate manufacturing process, counter substrate manufacturing process, and liquid crystal display device manufacturing process.
  • a metal film made of titanium or the like is spread on the entire substrate on the insulating substrate 10a such as a glass substrate.
  • a film is formed by a sputtering method, and then a pattern is formed by a photolithography technique (Photo Engraving Process, hereinafter referred to as “PEP technique”) to form the gate line 1, the gate electrode la, and the capacitor line lb.
  • PEP technique Photo Engraving Process
  • a silicon nitride film or the like is formed on the entire substrate on the gate line 1, the gate electrode la, and the capacitor line lb by a CVD (Chemica 1 Vapor D mark osition) method to form the gate insulating film 2. .
  • an intrinsic amorphous silicon film and an n + amorphous silicon film doped with phosphorus are continuously formed on the entire substrate on the gate insulating film 2 by the CVD method, and then the gate electrode la is formed by the PEP technique.
  • a semiconductor layer 3 composed of an intrinsic amorphous silicon layer and an n + amorphous silicon layer is formed by patterning in an island shape on top.
  • a metal film made of titanium or the like is formed by sputtering on the entire substrate on the gate insulating film 11 on which the semiconductor layer 3 is formed.
  • a source electrode 4a and a drain electrode 4b are formed.
  • a channel portion (not shown) is formed by etching and removing the n + amorphous silicon layer of the semiconductor layer 6 using the source electrode 4a and the drain electrode 4b as a mask.
  • a silicon nitride film or the like is formed on the entire substrate on the source electrode 4a and the drain electrode 4b by using the CVD method, and a pattern is formed by the PEP technique so as to cover the TFT 5, thereby forming the protective layer 6 To do.
  • photosensitive acrylic resin or the like is applied to the entire substrate on the protective layer 6, and then patterned so as to cover the protective layer 6 by the PEP technique, thereby forming the insulating layer 7.
  • the contact hole 8 is formed by etching away the portion of the insulating layer 7 corresponding to the drain electrode 4b.
  • a transparent conductive film having the same strength as an ITO (Indium Tin Oxide) film is formed on the entire substrate on the insulating layer 7 by a sputtering method, and then patterned by the PEP technique to form sub-pixel electrodes 9a, A pixel electrode 9 having 9c and 9d and connecting portions 9b and 9e is formed.
  • ITO Indium Tin Oxide
  • a polyimide resin is applied to the entire substrate on the pixel electrode 9 by offset printing to form an alignment film (not shown).
  • the active matrix substrate 20 can be formed.
  • the semiconductor layer is formed of amorphous resin.
  • the method of forming the silicon film is exemplified, but it may be formed of the polysilicon film, and further, the amorphous silicon film and the polysilicon film are subjected to laser annealing to improve the crystallinity. Also good.
  • a black matrix (not shown) is formed by patterning using the PEP technique.
  • a color filter layer 11 is formed by patterning any one of red, green, and blue colored layers between the black matrices.
  • an ITO film is formed on the entire substrate on the color filter layer 11 to form the common electrode 12.
  • photosensitive acrylic resin or the like is applied to the entire substrate on the common electrode 12, and then P
  • the rivets 13 are formed by patterning so as to correspond to the center positions of the sub-pixel electrodes 9a, 9c and 9d on the active matrix substrate 20 by the EP technique.
  • a hole is formed on the surface of the common electrode 12 at a position corresponding to the rivet 13, or the pixel electrode 9 on the opposing active matrix substrate 20 is formed. You can also make a hole in the surface!
  • polyimide resin is applied to the entire substrate on the rivet 13 by offset printing.
  • an alignment film (not shown) is formed.
  • the counter substrate 30 constituting the present invention can be manufactured.
  • a seal material having a thermosetting epoxy resin strength and the like is applied to one of the active matrix substrate 20 and the counter substrate 30 by screen printing in a frame-like pattern lacking the liquid crystal inlet portion, and the other.
  • a spherical spacer having a diameter corresponding to the thickness of the liquid crystal layer 40 and having a coercive force such as resin or silica is sprayed on the substrate.
  • the active matrix substrate 20 and the counter substrate 30 are bonded together, the sealing material is hardened, and an empty cell is formed.
  • Liquid crystal material containing liquid crystal molecules 15 and chiral agent is injected by the decompression method to form the liquid crystal layer 40 To do.
  • a UV curable resin is applied to the liquid crystal inlet, the UV curable resin is cured by UV irradiation, and the inlet is sealed.
  • the liquid crystal display device 50 of the present invention can be manufactured.
  • three large sub-pixel electrodes 9c are arranged vertically, and two small sub-pixel electrodes 9a are horizontally arranged on the lower side. They are arranged side by side.
  • two large sub-pixel electrodes 9c are arranged vertically, and six small sub-pixel electrodes 9a are arranged vertically below the sub-pixel electrodes 9c. They are arranged in 3 rows and 2 columns.
  • 10 small sub-pixel electrodes 9a are arranged on the lower side of one large sub-pixel electrode 9c. They are arranged in line.
  • sub-pixel electrodes 9a formed in a small size are arranged in 7 rows and 2 columns.
  • each of the liquid crystal display devices having the active matrix substrates 20a to 20d having the above-described configuration was measured for the aperture ratio (NA) and the response speed ( ⁇ r) of the pixel.
  • NA aperture ratio
  • ⁇ r response speed
  • the aperture ratio is the area ratio of the area where light can be transmitted in each pixel
  • the response speed is the time required for the pixel transmittance to reach a predetermined value when a drive signal is supplied to each pixel. It is.
  • FIG. 10 is a plan view of the liquid crystal display device having active matrix substrates 20a to 20d. It is a graph which shows a mouth rate and a response speed.
  • the aperture ratio increases as the number of subpixel electrodes 9c formed larger, and the response speed decreases as the number of subpixel electrodes 9a formed smaller. It became the conventional knowledge. Under the precondition that the aperture ratio is 45% or more and the response speed is 150 msec or less, among the active matrix substrates 20a to 20d, the combination of the sub-pixel electrodes of the active matrix substrate 20c is optimal.
  • the branch portions 9a ′ and 9c ′ constituting the connecting portion 9e between the sub-pixel electrodes 9a and 9c serve as the sub-pixel electrodes 9a.
  • 9c in the radial direction centered on the rivet 13 when a voltage is applied to the liquid crystal layer 40, that is, in each subpixel electrode 9a and 9c, the liquid crystal molecules 15 are radially centered around the rivet 13.
  • the liquid crystal molecules 15 are affected by the branches 9a ′ and 9c ′ in the subpixel electrodes 9a and 9c, that is, the alignment directions of the liquid crystal molecules 15 near the branches 9a ′ and 9c ′.
  • the orientation directions of the liquid crystal molecules 15 in the respective branch portions 9a ′ and 9c ′ substantially coincide. Therefore, the alignment disorder of the liquid crystal molecules 15 in the vicinity of the connecting portion 9e between the sub-pixel electrodes 9a and 9c can be suppressed. Therefore, in a vertical alignment type liquid crystal display device in which subpixel electrodes having different sizes are connected to each other, it is possible to suppress alignment disorder of liquid crystal molecules due to the connection. Further, since the sub-pixel electrodes having different sizes can be connected while suppressing the alignment disorder of the liquid crystal molecules 15 as in this embodiment, the liquid crystal display device having a desired pixel aperture ratio and response speed. Can be obtained.
  • FIG. 11 and 12 show Embodiment 2 of the liquid crystal display device according to the present invention.
  • FIG. 11 is a main part plan view showing main parts of the sub-pixel electrodes 9a and 9c of the active matrix substrate 20 constituting the liquid crystal display device 50 of the present embodiment
  • FIG. 11 is a cross-sectional view of the liquid crystal display device 50 taken along the line XII-XII.
  • the same portions as those in FIGS. 1 to 10 are denoted by the same reference numerals, and detailed description thereof is omitted.
  • Embodiment 1 described above spherical spacers having a coercive force of silica or silica are dispersed as the spacers between the active matrix substrate 20 and the counter substrate 30.
  • a columnar spacer portion 17 is provided on the counter substrate 20.
  • Other configurations are substantially the same as those in the first embodiment.
  • the columnar spacer portions 17 are formed between the sub-pixel electrodes 9a on the capacitance line lb that cannot transmit light. Then, in the counter substrate manufacturing process of Embodiment 1, the columnar spacer portion 17 is coated with photosensitive acrylic resin after forming the common electrode 12, and the applied photosensitive acrylic resin is PEP. Patterns can be formed by using technology.
  • the two aligned sub-pixel electrodes 9a are connected by the trident connecting portion 9e, so that a columnar shape is provided between the two second sub-pixel electrodes. Even if the spacer portion 17 is disposed, the connecting portion 9e and the columnar spacer portion 17 are less likely to be infested.
  • FIG. 23 is a principal plan view showing a principal part between the sub-pixel electrodes 109 of the active matrix substrate 120 constituting the liquid crystal display device 150 which is a comparative example of the present embodiment
  • FIG. 24 is a cross-sectional view of the liquid crystal display device 150 taken along line XXIV—XXIV in FIG.
  • the columnar spacer 117 formed on the counter substrate 130 overlaps with the connecting portion 109b formed on the active matrix substrate 120. Therefore, when external pressure is applied to the liquid crystal display device 150, the connecting portion 109b may be disconnected by the columnar spacer portion 117.
  • the width of the connecting portion 109b (for example, 7 to: LO / zm) is smaller than the diameter (for example, 12 m) of the columnar spacer portion 117, the columnar spacer portion 117 is evenly distributed. It becomes difficult to contact the connecting portion 109b. In this case, the distance between the active matrix substrate 120 and the counter substrate 130 varies, which may cause display unevenness and deteriorate the display quality.
  • the sub-pixel electrodes 9a are connected via the three-pronged connecting portions 9e, so that the connecting portions 9e and the columnar spacer portions 17 are physically connected. Since it is difficult to contact, the disconnection of the said connection part and the fall of display quality can be suppressed.
  • FIG. 13 is a main part plan view showing the main parts of the sub-pixel electrodes 9a and 9c of the active matrix substrate 20 constituting the liquid crystal display device 50 of the present embodiment
  • FIG. 14 is a cross-sectional view of the liquid crystal display device 50 taken along line XIV-XIV.
  • the transmissive liquid crystal display device 50 is exemplified.
  • the present invention is a transflective liquid crystal display device 50 in which the reflective electrode 14 is formed on the sub-pixel electrode 9c. It's good.
  • the reflective electrode 14 is provided so as to overlap with the sub-pixel electrode 9c formed on the capacitor line lb.
  • the reflective electrode 14 is formed by sequentially forming a molybdenum film and an aluminum film by a sputtering method after forming the pixel electrode 9 made of an ITO film in the active matrix substrate manufacturing process of the first embodiment, and then using the PEP technique. It can be formed by forming a pattern. As a result, among the plurality of subpixel electrodes constituting the pixel electrode 9, the subpixel electrode 9c on which the reflective electrode 14 is formed becomes a reflective region, and the other subpixel electrodes 9a and the like become transmissive regions.
  • the surface of the insulating layer 7 in the reflection region is formed to have an appropriate concavo-convex shape. May be given.
  • the molybdenum film is sandwiched between the aluminum film constituting the reflective electrode 14 and the ITO film constituting the pixel electrode 9, the aluminum film is formed when the aluminum film is patterned by the PEP technique. It is possible to prevent the aluminum film from being electrically corroded without forming a local battery between the ITO film and the ITO film.
  • a resin layer 16 is provided between the color filter layer 11 and the common electrode 12 of the counter substrate 30 in the reflection region. Yes.
  • the film thickness of the resin layer 16 is adjusted so that the thickness of the liquid crystal layer 40 in the reflective region is approximately 1Z2 of the thickness of the liquid crystal layer 40 in the transmissive region.
  • the resin layer 16 is coated with a photosensitive acrylic resin after forming the color filter layer 11 in the counter substrate manufacturing step of the first embodiment, and the applied photosensitive acrylic resin or the like is applied. It can be formed by pattern formation using PEP technology.
  • the transflective liquid crystal display device 50 having such a configuration reflects the external light incident from the counter substrate 30 side in the reflective region by the reflective electrode 14 and also enters the active matrix substrate 20 in the transmissive region. It is configured to transmit light from a knocklight incident from the side! Therefore, a vertically oriented liquid crystal display device in which rectangular sub-pixel electrodes of different sizes are connected to each other, even if it is a transflective type capable of displaying both a transmissive mode and a reflective mode. It is possible to suppress alignment disorder of the liquid crystal molecules due to the connection.
  • FIG. 15 and 16 show Embodiment 4 of the liquid crystal display device according to the present invention.
  • FIG. 15 is a main part plan view showing main parts of the sub-pixel electrodes 9a and 9c of the active matrix substrate 20 constituting the liquid crystal display device 50 of the present embodiment
  • FIG. 16 is a plan view of FIG.
  • FIG. 6 is a cross-sectional view of the liquid crystal display device 50 taken along line XVI—XVI.
  • the reflective electrode 14 is provided on the sub-pixel electrode 9c that is formed large. In this embodiment, the reflective electrode 14 is provided on the sub-pixel electrode 9a that is formed small. It has been. Other configurations are substantially the same as those in the third embodiment.
  • the reflective electrode 14 is provided so as to overlap each of the two sub-pixel electrodes 9a formed on the capacitor line lb.
  • the position of the contact hole 8 on the active matrix substrate 20 overlaps the position of the rivet 13 on the counter substrate 30, so that the alignment disorder of the liquid crystal molecules 15 is prevented. Can be suppressed.
  • FIG. 25 is a principal plan view showing the principal part of the sub-pixel electrode 109a of the active matrix substrate 120 constituting the liquid crystal display device 150 which is a comparative example of the present embodiment
  • FIG. FIG. 6 is a cross-sectional view of the liquid crystal display device 150 taken along line XXVI—XXVI in FIG.
  • this liquid crystal display device 150 a contour in the sub-pixel electrode 109a formed large is used. Two contact holes are provided for one subpixel electrode 109a in order to prevent a contact failure due to a defect of the tato hole. Since the liquid crystal molecules 115 in the liquid crystal layer 140 are not only the rivets 113 formed in the counter substrate 130 but also the contact holes 108 formed in the active matrix substrate 120 are the center of alignment, the alignment of the liquid crystal molecules 115 May disturb the display quality.
  • the position of the orientation center (rivet 13) of the liquid crystal molecules 15 and the position of the contact hole 8 in each first sub-pixel electrode 9a are aligned with each other. 1
  • the alignment disorder of the liquid crystal molecules 15 in the sub-pixel electrode 9a can be suppressed, and the deterioration of display quality can be suppressed.
  • the present invention is useful for a vertical alignment type liquid crystal display device, a display for use in a pile using the same, and the like.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

La présente invention concerne un dispositif d’affichage à cristaux liquides du type à alignement vertical (50) équipé d’un substrat matriciel actif (20) dans lequel une pluralité d’électrodes de pixel (9) est disposée dans la matrice. Chaque électrode de pixel (9) est composée d’une première électrode de sous-pixel (9a) et d’une seconde électrode de sous-pixel (9c) qui est connectée à la première électrode de sous-pixel (9a) par l'intermédiaire d’une partie de connexion (9e) et qui est plus grande que la première électrode de sous-pixel (9a). Des molécules de cristaux liquides (15) peuvent s’aligner de manière radiale, avec un rivet (13) au centre, pour chacune des électrodes de sous-pixel (9a, 9c) lorsqu’une tension est appliquée à une couche de cristaux liquides (40). La partie de connexion (9e) est composée d’une première partie de ramification (9a’) et d’une seconde partie de ramification (9c’) s’étendant dans les sens d’alignement radial des molécules de cristaux liquides (15) des électrodes de sous-pixel (9a, 9c).
PCT/JP2006/303601 2005-04-22 2006-02-27 Dispositif d’affichage a cristaux liquides WO2006114933A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-124476 2005-04-22
JP2005124476A JP2008170462A (ja) 2005-04-22 2005-04-22 液晶表示装置

Publications (1)

Publication Number Publication Date
WO2006114933A1 true WO2006114933A1 (fr) 2006-11-02

Family

ID=37214564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/303601 WO2006114933A1 (fr) 2005-04-22 2006-02-27 Dispositif d’affichage a cristaux liquides

Country Status (2)

Country Link
JP (1) JP2008170462A (fr)
WO (1) WO2006114933A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4826626B2 (ja) 2008-12-05 2011-11-30 カシオ計算機株式会社 液晶表示素子
JP5244634B2 (ja) * 2009-01-27 2013-07-24 株式会社ジャパンディスプレイセントラル 液晶表示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002122886A (ja) * 2000-08-11 2002-04-26 Sharp Corp 液晶表示装置およびその欠陥修正方法
JP2002202511A (ja) * 2000-10-31 2002-07-19 Sharp Corp 液晶表示装置
JP2002323706A (ja) * 2001-02-23 2002-11-08 Nec Corp 横電界方式のアクティブマトリクス型液晶表示装置及びその製造方法
JP2003107458A (ja) * 2001-09-28 2003-04-09 Seiko Epson Corp 液晶表示パネルおよび電子機器
JP2004077698A (ja) * 2002-08-14 2004-03-11 Toshiba Corp 液晶表示装置
JP2004163943A (ja) * 2002-11-14 2004-06-10 Samsung Electronics Co Ltd 液晶表示装置用薄膜トランジスタ基板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002122886A (ja) * 2000-08-11 2002-04-26 Sharp Corp 液晶表示装置およびその欠陥修正方法
JP2002202511A (ja) * 2000-10-31 2002-07-19 Sharp Corp 液晶表示装置
JP2002323706A (ja) * 2001-02-23 2002-11-08 Nec Corp 横電界方式のアクティブマトリクス型液晶表示装置及びその製造方法
JP2003107458A (ja) * 2001-09-28 2003-04-09 Seiko Epson Corp 液晶表示パネルおよび電子機器
JP2004077698A (ja) * 2002-08-14 2004-03-11 Toshiba Corp 液晶表示装置
JP2004163943A (ja) * 2002-11-14 2004-06-10 Samsung Electronics Co Ltd 液晶表示装置用薄膜トランジスタ基板

Also Published As

Publication number Publication date
JP2008170462A (ja) 2008-07-24

Similar Documents

Publication Publication Date Title
US8553189B2 (en) Color filter substrate and liquid crystal display panel including the same
JP4606822B2 (ja) 半透過型液晶表示装置の製造方法
KR20000058018A (ko) 액정 표시 장치 및 그 제조 방법
KR20080071001A (ko) 액정 표시 패널 및 이의 제조 방법
JP2001174824A (ja) 配向分割型液晶表示装置、その製造方法及びその画像表示方法
US7724325B2 (en) Liquid crystal display device and method for manufacturing the same
US20080284965A1 (en) Liquid crystal display device and fabricating method thereof
KR100752950B1 (ko) 씨오티구조 액정표시장치 및 그 제조방법
KR20080025544A (ko) 액정표시패널 및 이의 제조 방법
KR20040108242A (ko) 횡전계 방식의 액정표시장치 및 그 제조방법
KR20050067906A (ko) 액정표시장치 및 그의 제조방법
US8842249B2 (en) Display substrate, a method of manufacturing the same and a display apparatus having the same
KR20070072275A (ko) 수직배향모드 액정표시소자 및 그 제조방법
WO2006114933A1 (fr) Dispositif d’affichage a cristaux liquides
KR101296648B1 (ko) 액정표시장치
KR101186009B1 (ko) 횡전계 방식 액정 표시 장치의 제조 방법 및 배향막 형성방법
KR101232547B1 (ko) 횡전계 방식 액정 표시 장치용 어레이 기판 및 그 제조 방법
KR20080023904A (ko) 액정 표시 장치 및 그 제조 방법
JP2007017756A (ja) 液晶表示装置
KR101130873B1 (ko) 액정표시패널의 제조방법
KR20050113748A (ko) 횡전계 방식 액정 표시 장치용 어레이 기판 및 그 제조 방법
KR20050001952A (ko) 횡전계 방식의 액정표시장치 및 그의 제조방법
KR101238002B1 (ko) 수평 전계 인가형 액정표시장치 및 그 제조 방법
JP2007316234A (ja) 液晶表示装置および液晶表示装置の製造方法
JP2008122799A (ja) 液晶表示パネル

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 06714738

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP