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WO2013185390A1 - 液晶显示装置及其制造方法 - Google Patents

液晶显示装置及其制造方法 Download PDF

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Publication number
WO2013185390A1
WO2013185390A1 PCT/CN2012/078011 CN2012078011W WO2013185390A1 WO 2013185390 A1 WO2013185390 A1 WO 2013185390A1 CN 2012078011 W CN2012078011 W CN 2012078011W WO 2013185390 A1 WO2013185390 A1 WO 2013185390A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal layer
polarizing plate
display device
crystal molecules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/078011
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English (en)
French (fr)
Inventor
马小龙
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TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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.)
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/581,476 priority Critical patent/US20140240646A1/en
Publication of WO2013185390A1 publication Critical patent/WO2013185390A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal display device and a method of fabricating the same.
  • a conventional liquid crystal display device includes a backlight, a first polarizing plate, an array substrate, a liquid crystal layer, a color filter substrate, and a second polarizing plate, the backlight, the first polarizing plate, the array substrate, the liquid crystal layer, and the color filter.
  • the substrate and the second polarizing plate are sequentially stacked and integrated into one body.
  • the polarization direction of the first polarizing plate of the liquid crystal display device is perpendicular to the polarization direction of the second polarizing plate, and the liquid crystal display device controls the orientation of the liquid crystal molecules by applying a voltage to the liquid crystal molecules in the liquid crystal layer, thereby changing the polarization state of the light, thereby The polarized light output from the first polarizing plate can pass through the second polarizing plate, thereby realizing display of an image.
  • TN Transmission Nematic, Twisted nematic mode
  • VA Vertical Alignment
  • IPS In Panel Switching, In-plane switching
  • the liquid crystal display device of the TN mode has a superior response speed compared to the liquid crystal display devices of the other two modes due to the special arrangement of the liquid crystal molecules. Since the display of the 3D image has a higher response time to the liquid crystal display, the This advantage is even more pronounced in the case of 3D image display.
  • the liquid crystal molecules of the liquid crystal display device are arranged in a direction parallel to the direction of the array substrate and the color filter substrate in a default state, and the liquid crystal molecules are gradually twisted by a certain angle around the substrate normal, due to the optical rotation effect,
  • the polarized light emitted from the first polarizing plate is rotated by 90° with the liquid crystal molecules, and the polarization direction of the polarized light is parallel to the transmission axis of the second polarizing plate when incident on the second polarizing plate, so that the light penetrates the first polarizing plate.
  • the second polarizing plate realizes image display.
  • the liquid crystal display device in TN mode is displayed in a bright state when it is not powered (Normally White), when it is powered on, it is displayed in a dark state. At this time, most of the liquid crystal molecules in the liquid crystal layer are arranged in a direction perpendicular to the array substrate and the color filter substrate. Due to the anchoring force of the alignment layer, the alignment layer is close to the alignment layer. The alignment direction of the liquid crystal molecules is still parallel to the direction of the array substrate and the color filter substrate, so optical retardation occurs, thereby causing light leakage.
  • the liquid crystal display device in the TN mode is relatively inferior in contrast because it transmits light in a dark state.
  • An object of the present invention is to provide a liquid crystal display device which can avoid the phenomenon of light leakage of a liquid crystal display device, improve display contrast, and maintain the fast response speed of the TN mode liquid crystal display device.
  • Another object of the present invention is to provide a method of fabricating a liquid crystal display device which can avoid the phenomenon of light leakage of the liquid crystal display device, improve display contrast, and maintain the fast response speed of the TN mode liquid crystal display device.
  • the present invention provides a liquid crystal display device including a backlight, a first polarizing plate, an array substrate, a first liquid crystal layer, a color filter substrate, and a second polarizing plate, the backlight, the first polarizing plate,
  • the array substrate, the first liquid crystal layer, the color filter substrate, and the second polarizing plate are sequentially stacked and integrated, and the first liquid crystal layer includes a first surface and a second surface, and the first a liquid crystal molecule on a surface is arranged in a direction perpendicular to an alignment direction of liquid crystal molecules on the second surface, and further includes a liquid crystal polymer film disposed on the first polarizing plate and the array Between the substrates; a second liquid crystal layer is disposed in the liquid crystal polymer film, wherein the alignment direction of the liquid crystal molecules in the second liquid crystal layer is parallel to a plane in which the liquid crystal polymer film is located, and the second liquid crystal layer includes a third surface and a fourth surface, the alignment direction of the liquid crystal molecules on the third surface being
  • the third surface of the second liquid crystal layer faces the first liquid crystal layer.
  • the fourth surface of the second liquid crystal layer faces the first polarizing plate.
  • the arrangement direction of the liquid crystal molecules on the fourth surface of the second liquid crystal layer is parallel to the direction in which the transmission axis of the first polarizing plate is located.
  • the alignment direction of the liquid crystal molecules on the third surface of the second liquid crystal layer is parallel to the alignment direction of the liquid crystal molecules on the second surface of the first liquid crystal layer.
  • Another object of the present invention is to provide a liquid crystal display device which can avoid the phenomenon of light leakage of a liquid crystal display device, improve display contrast, and maintain the advantage of a fast response speed of the TN mode liquid crystal display device.
  • the present invention provides a liquid crystal display device including a backlight, a first polarizing plate, an array substrate, a first liquid crystal layer, a color filter substrate, and a second polarizing plate, the backlight, the The first polarizing plate, the array substrate, the first liquid crystal layer, the color filter substrate, and the second polarizing plate are sequentially stacked and integrated, and the first liquid crystal layer includes a first surface and a second surface.
  • the alignment direction of the liquid crystal molecules on the first surface is perpendicular to the alignment direction of the liquid crystal molecules on the second surface, and further includes a liquid crystal polymer film, wherein the liquid crystal polymer film is disposed on the first polarizing plate Between the array substrate; or the liquid crystal polymer film is disposed between the color filter substrate and the second polarizer.
  • a second liquid crystal layer is disposed in the liquid crystal polymer film, and an alignment direction of liquid crystal molecules in the second liquid crystal layer is parallel to a plane in which the liquid crystal polymer film is located, and the second The liquid crystal layer includes a third surface and a fourth surface, the alignment direction of the liquid crystal molecules on the third surface being perpendicular to the alignment direction of the liquid crystal molecules on the fourth surface.
  • the second liquid crystal layer has the same phase difference as the first liquid crystal layer.
  • the liquid crystal display device if the liquid crystal polymer film is disposed between the first polarizing plate and the array substrate, the third surface of the second liquid crystal layer faces the first liquid crystal layer, The fourth surface of the second liquid crystal layer faces the first polarizing plate, and an arrangement direction of liquid crystal molecules on the fourth surface of the second liquid crystal layer and a transmission axis of the first polarizing plate Parallel to the direction in which the alignment direction of the liquid crystal molecules on the third surface of the second liquid crystal layer is parallel to the alignment direction of the liquid crystal molecules on the second surface of the first liquid crystal layer.
  • the liquid crystal display device if the liquid crystal polymer film is disposed between the first polarizing plate and the array substrate, the third surface of the second liquid crystal layer faces the first liquid crystal layer, The fourth surface of the second liquid crystal layer faces the first polarizing plate, and an arrangement direction of liquid crystal molecules on the fourth surface of the second liquid crystal layer and a transmission axis of the first polarizing plate Parallel to the direction in which the alignment direction of the liquid crystal molecules on the third surface of the second liquid crystal layer is parallel to the alignment direction of the liquid crystal molecules on the second surface of the first liquid crystal layer.
  • the liquid crystal display device if the liquid crystal polymer film is interposed between the color filter substrate and the second polarizing plate, the third surface of the second liquid crystal layer faces the second a polarizing plate, the fourth surface of the second liquid crystal layer faces the first liquid crystal layer, and an arrangement direction of liquid crystal molecules on the fourth surface of the second liquid crystal layer is opposite to that of the first polarizing plate
  • the direction in which the transmission axis is located is parallel, and the alignment direction of the liquid crystal molecules on the fourth surface of the second liquid crystal layer is parallel to the alignment direction of the liquid crystal molecules on the first surface of the first liquid crystal layer.
  • the liquid crystal display device if the liquid crystal polymer film is interposed between the color filter substrate and the second polarizing plate, the third surface of the second liquid crystal layer faces the second a polarizing plate, the fourth surface of the second liquid crystal layer faces the first liquid crystal layer, and an arrangement direction of liquid crystal molecules on the fourth surface of the second liquid crystal layer is opposite to that of the first polarizing plate
  • the direction in which the transmission axis is located is parallel, and the alignment direction of the liquid crystal molecules on the fourth surface of the second liquid crystal layer is parallel to the alignment direction of the liquid crystal molecules on the first surface of the first liquid crystal layer.
  • Another object of the present invention is to provide a method of fabricating a liquid crystal display device which can avoid the phenomenon of light leakage of the liquid crystal display device, improve display contrast, and maintain the fast response speed of the TN mode liquid crystal display device.
  • the present invention provides a method of fabricating a liquid crystal display device including a backlight, a first polarizing plate, an array substrate, a first liquid crystal layer, a color filter substrate, and a second polarizing plate.
  • the first liquid crystal layer includes a first surface and a second surface, the alignment direction of the liquid crystal molecules on the first surface is perpendicular to the alignment direction of the liquid crystal molecules on the second surface, and the method includes the backlight
  • the source, the first polarizing plate, the array substrate, the first liquid crystal layer, the color filter substrate, and the second polarizing plate are sequentially stacked and integrated into one step, and the liquid crystal display device further includes a liquid crystal polymer film, the method further comprising the steps of: (A) disposing the liquid crystal polymer film between the first polarizing plate and the array substrate; or (B) polymerizing the liquid crystal The material film is disposed between the color filter substrate and the second polarizing plate.
  • a second liquid crystal layer is disposed in the liquid crystal polymer film, and an alignment direction of liquid crystal molecules in the second liquid crystal layer is parallel to a plane in which the liquid crystal polymer film is located,
  • the second liquid crystal layer includes a third surface and a fourth surface, the alignment direction of the liquid crystal molecules on the third surface being perpendicular to the alignment direction of the liquid crystal molecules on the fourth surface.
  • the second liquid crystal layer has the same phase difference as the first liquid crystal layer.
  • the method further includes the following steps: (c1), the second liquid crystal The third surface of the layer faces the first liquid crystal layer; (c2), the fourth surface of the second liquid crystal layer faces the first polarizing plate; (c3), the second liquid crystal layer The arrangement direction of the liquid crystal molecules on the fourth surface is parallel to the direction in which the transmission axis of the first polarizing plate is located; (c4), the arrangement of the liquid crystal molecules on the third surface of the second liquid crystal layer The direction is parallel to the alignment direction of the liquid crystal molecules on the second surface of the first liquid crystal layer.
  • the method further includes the following steps: (c1), the second liquid crystal The third surface of the layer faces the first liquid crystal layer; (c2), the fourth surface of the second liquid crystal layer faces the first polarizing plate; (c3), the second liquid crystal layer The arrangement direction of the liquid crystal molecules on the fourth surface is parallel to the direction in which the transmission axis of the first polarizing plate is located; (c4), the arrangement of the liquid crystal molecules on the third surface of the second liquid crystal layer The direction is parallel to the alignment direction of the liquid crystal molecules on the second surface of the first liquid crystal layer.
  • the method further includes the following steps: (d1), the first The third surface of the two liquid crystal layers faces the second polarizing plate; (d2), the fourth surface of the second liquid crystal layer faces the first liquid crystal layer; (d3), the second liquid crystal
  • the alignment direction of the liquid crystal molecules on the fourth surface of the layer is parallel to the direction in which the transmission axis of the first polarizing plate is located; (d4), the liquid crystal molecules on the fourth surface of the second liquid crystal layer
  • the alignment direction is parallel to the alignment direction of the liquid crystal molecules on the first surface of the first liquid crystal layer.
  • the method further includes the following steps: (d1), the first The third surface of the two liquid crystal layers faces the second polarizing plate; (d2), the fourth surface of the second liquid crystal layer faces the first liquid crystal layer; (d3), the second liquid crystal
  • the alignment direction of the liquid crystal molecules on the fourth surface of the layer is parallel to the direction in which the transmission axis of the first polarizing plate is located; (d4), the liquid crystal molecules on the fourth surface of the second liquid crystal layer
  • the alignment direction is parallel to the alignment direction of the liquid crystal molecules on the first surface of the first liquid crystal layer.
  • the present invention provides liquid crystal polymer film by providing a liquid crystal polymer film between the first polarizing plate and the array substrate or a liquid crystal polymer film between the color filter substrate and the second polarizing plate.
  • the film can act as an optical rotation for the polarized light, and the first liquid crystal layer functions to allow and prohibit the penetration of the polarized light between the first polarizing plate and the second polarizing plate, thereby fundamentally solving the TN mode liquid crystal display device.
  • the technical problem of light leakage avoids the phenomenon of light leakage in the TN mode liquid crystal display device, improves the display contrast of the liquid crystal display device, and maintains the advantage of the fast response speed of the conventional TN mode liquid crystal display device.
  • FIG. 1 is a schematic view showing a state in which a voltage is not applied to a liquid crystal in the first embodiment of the liquid crystal display device of the present invention
  • FIG. 2 is a schematic view showing a state in which a voltage is applied to a liquid crystal according to a first embodiment of the liquid crystal display device of the present invention
  • FIG. 3 is a schematic view showing a state in which a voltage is not applied to a liquid crystal in the second embodiment of the liquid crystal display device of the present invention
  • FIG. 4 is a schematic view showing a state in which a voltage is applied to a liquid crystal in a second embodiment of the liquid crystal display device of the present invention
  • Figure 5 is a flow chart showing a first embodiment of a method of fabricating a liquid crystal display device of the present invention
  • Fig. 6 is a flow chart showing a second embodiment of a method of manufacturing a liquid crystal display device of the present invention.
  • the present invention aims to provide a liquid crystal display device capable of simultaneously having a fast response speed and being displayed as a dark state under normal conditions, avoiding the conventional TN (Twisted) Nematic,
  • the twisted nematic mode liquid crystal display device exhibits a light leakage phenomenon in a dark state, improves the display contrast of the liquid crystal display device, and adapts to the trend that the liquid crystal display device has higher and higher response speed requirements and higher contrast requirements.
  • the liquid crystal display device includes a backlight 111, a first polarizing plate 110, an array substrate 106, a first liquid crystal layer 104, a color filter substrate 102, and a second polarizing plate 101.
  • the liquid crystal display device of the present embodiment further includes a liquid crystal polymer film 108 disposed between the first polarizing plate 110 and the array substrate 106.
  • the inside of the liquid crystal polymer film 108 has a plurality of liquid crystal molecules, which are referred to as a second liquid crystal layer, and the alignment direction of the liquid crystal molecules in the second liquid crystal layer (that is, the direction of the long axis of the liquid crystal molecules) and the liquid crystal polymer film 108 The planes in which they are located are parallel.
  • the second liquid crystal layer has upper and lower surfaces, which are respectively referred to as a third surface 107 and a fourth surface 109, and the alignment direction of the liquid crystal molecules on the third surface 107 (ie, the direction of the long axis of the liquid crystal molecules) is the same,
  • the alignment direction of the liquid crystal molecules on the four surfaces 109 i.e., the direction of the long axis of the liquid crystal molecules
  • the alignment direction of the liquid crystal molecules on the third surface 107 and the alignment direction of the liquid crystal molecules on the fourth surface 109 are the same. vertical.
  • Liquid crystal molecules are also present between the third surface 107 and the fourth surface 109 of the second liquid crystal layer, and liquid crystal molecules in the second liquid crystal layer start from the third surface 107 along the normal direction of the liquid crystal polymer film 108.
  • the fourth surface 109 is gradually rotated by a certain angle, that is, the liquid crystal molecules in the second liquid crystal layer start from the third surface 107, and gradually rotate from a zero degree angle to a ninety degree angle along the normal direction of the liquid crystal polymer film 108. End to the fourth surface 109.
  • the second liquid crystal layer has the same phase difference as the first liquid crystal layer 104, so that the liquid crystal display device of the present invention is dark under normal conditions, preventing the occurrence of light leakage.
  • the positional relationship between the liquid crystal polymer film 108 and the first polarizing plate 110 and the array substrate 106 is such that the third surface 107 of the second liquid crystal layer of the liquid crystal polymer film 108 faces the first liquid crystal layer 104, and the fourth liquid crystal layer
  • the surface 109 faces the first polarizing plate 110, and the alignment direction of the liquid crystal molecules on the fourth surface 109 of the second liquid crystal layer (that is, the direction of the long axis of the liquid crystal molecules) is parallel to the direction in which the transmission axis of the first polarizing plate 110 is located.
  • the alignment direction of the liquid crystal molecules on the third surface 107 of the second liquid crystal layer is parallel to the alignment direction of the liquid crystal molecules on the second surface 105 of the first liquid crystal layer 104.
  • Fig. 2 is a view showing a state in which a voltage is applied to a liquid crystal in the first embodiment of the liquid crystal display device of the present invention.
  • the liquid crystal display device of the present invention when the array substrate 106 applies a voltage to the liquid crystal molecules in the first liquid crystal layer 104, the liquid crystal molecules of the first liquid crystal layer 104 are deflected to be perpendicular to the array substrate 106 and the color filter.
  • the polarization direction of the polarized light emitted from the first polarizing plate 110 when entering the first liquid crystal layer 104 is rotated by ninety degrees, and the first liquid crystal layer 104 is incident on the first liquid crystal layer 104.
  • the polarized light therein does not function as an optical rotation, and therefore, after passing through the first liquid crystal layer 104 and the color filter substrate 102, the polarization direction of the polarized light incident on the second polarizing plate 101 and the penetration of the second polarizing plate 101
  • the directions in which the axes are located are parallel, so that light can penetrate the first polarizing plate 110 and the second polarizing plate 101.
  • Fig. 3 is a view showing a state in which a voltage is not applied to a liquid crystal in the second embodiment of the liquid crystal display device of the present invention.
  • the liquid crystal display device of the present embodiment further includes a liquid crystal polymer film 108 disposed between the color filter substrate 102 and the second polarizing plate 101.
  • the inside of the liquid crystal polymer film 108 has a plurality of liquid crystal molecules, which are referred to as a second liquid crystal layer, and the alignment direction of the liquid crystal molecules in the second liquid crystal layer (that is, the direction of the long axis of the liquid crystal molecules) and the liquid crystal polymer film 108 The planes in which they are located are parallel.
  • the second liquid crystal layer has upper and lower surfaces, which are respectively referred to as a third surface 107 and a fourth surface 109, and the alignment direction of the liquid crystal molecules on the third surface 107 (ie, the direction of the long axis of the liquid crystal molecules) is the same,
  • the alignment direction of the liquid crystal molecules on the four surfaces 109 i.e., the direction of the long axis of the liquid crystal molecules
  • the alignment direction of the liquid crystal molecules on the third surface 107 and the alignment direction of the liquid crystal molecules on the fourth surface 109 are the same. vertical.
  • Liquid crystal molecules are also present between the third surface 107 and the fourth surface 109 of the second liquid crystal layer, and liquid crystal molecules in the second liquid crystal layer start from the third surface 107 along the normal direction of the liquid crystal polymer film 108.
  • the fourth surface 109 is gradually rotated by a certain angle, that is, the liquid crystal molecules in the second liquid crystal layer start from the third surface 107 and gradually rotate from a zero degree angle to a ninety degree angle along the normal direction of the polymer film 108.
  • the second liquid crystal layer and the first liquid crystal layer 104 have the same phase difference, so that the liquid crystal display device of the present invention is dark under normal conditions, preventing the occurrence of light leakage.
  • the positional relationship between the liquid crystal polymer film 1080 and the color filter substrate 102 and the second polarizing plate 101 is such that the third surface 107 of the second liquid crystal layer of the liquid crystal polymer film 108 faces the second polarizing plate 101, and the second liquid crystal layer The fourth surface 109 faces the first liquid crystal layer 104.
  • the alignment direction of the liquid crystal molecules on the fourth surface 109 of the second liquid crystal layer (that is, the direction of the long axis of the liquid crystal molecules) is parallel to the alignment direction of the liquid crystal molecules on the first surface 103 of the first liquid crystal layer 104, and the second liquid crystal
  • the alignment direction of the liquid crystal molecules on the third surface 107 of the layer is parallel to the direction in which the transmission axis of the second polarizing plate 101 is located, that is, the alignment direction of the liquid crystal molecules on the fourth surface 109 of the second liquid crystal layer and the first polarization.
  • the direction in which the penetrating axes of the plates 110 are located is parallel.
  • Fig. 4 is a view showing a state in which a voltage is applied to a liquid crystal in a second embodiment of the liquid crystal display device of the present invention.
  • the liquid crystal display device of the present invention when the array substrate 106 applies a voltage to the liquid crystal molecules in the first liquid crystal layer 104, the liquid crystal molecules of the first liquid crystal layer 104 are deflected to be perpendicular to the array substrate 106 and the color filter.
  • the first polarizing plate 110 In the state of the substrate 102, the first polarizing plate 110 outputs polarized light to the first liquid crystal layer 104, and the polarization direction of the polarized light is parallel to the alignment direction of the liquid crystal molecules of the fourth surface 109 of the liquid crystal polymer film 108, and the first liquid crystal layer 104
  • the polarized light incident on the polarized light does not rotate, and the polarized light emitted from the first polarizing plate 110 is rotated by ninety degrees when entering the second liquid crystal layer due to the optical rotation of the liquid crystal polymer film 108.
  • the polarization direction of the polarized light incident on the second polarizing plate 101 is parallel to the direction in which the transmission axis of the second polarizing plate 101 is located to allow light to penetrate the first polarizing plate 110 and the second polarizing plate 101.
  • step 501 the liquid crystal polymer film 108 is placed between the first polarizing plate 110 and the array substrate 106.
  • the facing directions of the third surface 107 and the fourth surface 109 of the liquid crystal polymer film 108 are set.
  • the third surface 107 of the liquid crystal polymer film 108 faces the array substrate 106, and the liquid crystal polymer is The fourth surface 109 of the film 108 faces the first polarizing plate 110.
  • step 503 the arrangement direction of the liquid crystal molecules of the fourth surface 109 of the liquid crystal polymer film 108 is set.
  • the arrangement direction of the liquid crystal molecules of the fourth surface 109 is parallel to the direction in which the transmission axis of the first polarizing plate 110 is located.
  • the alignment direction of the liquid crystal molecules of the second surface 105 of the first liquid crystal layer 104 is set such that the alignment direction of the liquid crystal molecules of the second surface 105 of the first liquid crystal layer 104 and the third surface of the liquid crystal polymer film 108
  • the alignment direction of the liquid crystal molecules of 107 is parallel.
  • step 601 the liquid crystal polymer film 108 is placed between the color filter substrate 102 and the second polarizing plate 101.
  • the facing directions of the third surface 107 and the fourth surface 109 of the liquid crystal polymer film 108 are set.
  • the third surface 107 of the liquid crystal polymer film 108 faces the second polarizing plate 101, and the liquid crystal is The fourth surface 109 of the polymer film 108 faces the color filter substrate 102.
  • step 603 the arrangement direction of the liquid crystal molecules of the fourth surface 109 of the liquid crystal polymer film 108 is set.
  • the arrangement direction of the liquid crystal molecules of the fourth surface 109 is parallel to the direction in which the transmission axis of the first polarizing plate 110 is located.
  • the alignment direction of the liquid crystal molecules of the first surface 103 of the first liquid crystal layer 104 is set such that the alignment direction of the liquid crystal molecules of the first surface 103 of the first liquid crystal layer 104 and the fourth surface of the liquid crystal polymer film 108 The alignment direction of the liquid crystal molecules of 109 is parallel.
  • the liquid crystal polymer film 108 is disposed between the first polarizing plate 110 and the array substrate 106, or the liquid crystal polymer film 108 is disposed between the color filter substrate 102 and the second polarizing plate 101, Therefore, the liquid crystal polymer film 108 of the present invention can function as an optical rotation for polarized light, and the first liquid crystal layer 104 functions to allow and prohibit the penetration of polarized light between the first polarizing plate 110 and the second polarizing plate 101.
  • the technical problem of light leakage of the TN mode liquid crystal display device is fundamentally solved.
  • the invention will be a traditional TN (Twisted Nematic,
  • the twisted nematic mode liquid crystal display device is displayed in a bright state when no voltage is applied to the first liquid crystal layer 104, and is displayed in a dark state when a voltage is applied to the first liquid crystal layer 104 so as not to apply a voltage to the first liquid crystal layer 104.
  • When it is displayed in a dark state it is displayed in a bright state when a voltage is applied to the first liquid crystal layer 104, so that leakage of light in the dark state of the TN mode liquid crystal display device can be avoided.
  • the present invention maintains the advantage that the liquid crystal display device in the conventional TN mode has a corresponding speed.

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Description

液晶显示装置及其制造方法 技术领域
本发明涉及液晶显示技术领域，特别涉及一种液晶显示装置及其制造方法。
 背景技术
传统的液晶显示装置包括背光源、第一偏光板、阵列基板、液晶层、彩色滤光片基板和第二偏光板，该背光源、第一偏光板、阵列基板、液晶层、彩色滤光片基板和第二偏光板依次叠加组合为一体。液晶显示装置的第一偏光板的偏振方向与第二偏光板的偏振方向垂直，液晶显示装置通过向液晶层中的液晶分子施加电压来控制液晶分子的取向，改变光的偏振状态，从而使从第一偏光板输出的偏振光能够通过第二偏光板，从而实现图像的显示。
传统的液晶显示装置有以下几种分类：TN（Twisted Nematic， 扭曲向列）模式、VA（Vertical Alignment， 垂直取向排列）模式、IPS（In Panel Switching， 面内切换）模式等。TN模式的液晶显示装置由于特殊的液晶分子排列，相比于其它两种模式的液晶显示装置具有响应速度快的优点，由于3D影像的显示对液晶显示屏的响应时间的要求较高，因此在3D影像显示的情况下这个优势更为突出。
TN模式中，液晶显示装置的液晶分子在默认状态下的排列方向为平行于阵列基板和彩色滤光片基板的方向，并且液晶分子会围绕基板法线逐渐扭曲一定的角度，由于旋光效应，从第一偏光板出射的偏振光会随着液晶分子旋转90°，在入射到第二偏光板时偏振光的偏振方向与第二偏光板的穿透轴平行，从而使得光线穿透第一偏光板和第二偏光板，实现影像显示。TN模式下的液晶显示装置在不加电时显示为亮态（Normally White），在加电时显示为暗态，此时液晶层中大部分的液晶分子的排列方向为垂直于阵列基板和彩色滤光片基板的方向，由于配向层的锚定力，靠近配向层的液晶分子的排列方向仍然是平行于阵列基板和彩色滤光片基板的方向，因此会发生光学延迟，从而造成漏光。TN模式下的液晶显示装置由于在暗态时透光，对比度相对来讲较差。
 技术问题
本发明的一个目的在于提供一种液晶显示装置，其能避免液晶显示装置出现漏光的现象，提高显示对比度，同时保持TN模式液晶显示装置响应速度快的优点。
本发明的另一个目的在于提供一种液晶显示装置制造方法，其能避免液晶显示装置出现漏光的现象，提高显示对比度，同时保持TN模式液晶显示装置响应速度快的优点。
 技术解决方案
本发明提供了一种液晶显示装置，包括背光源、第一偏光板、阵列基板、第一液晶层、彩色滤光片基板和第二偏光板，所述背光源、所述第一偏光板、所述阵列基板、所述第一液晶层、所述彩色滤光片基板和所述第二偏光板依次叠加组合为一体，所述第一液晶层包括第一表面和第二表面，所述第一表面上的液晶分子的排列方向与所述第二表面上的液晶分子的排列方向垂直，其还包括液晶聚合物膜，所述液晶聚合物膜设置于所述第一偏光板与所述阵列基板之间；所述液晶聚合物膜内设有第二液晶层，所述第二液晶层中的液晶分子的排列方向与所述液晶聚合物膜所在的平面平行，所述第二液晶层包括第三表面和第四表面，所述第三表面上的液晶分子的排列方向与所述第四表面上的液晶分子的排列方向垂直；所述第二液晶层具有与所述第一液晶层相同的相位差；所述第三表面上的液晶分子的排列方向均相同，所述第四表面上的液晶分子的排列方向均相同，所述液晶分子的排列方向为所述液晶分子的长轴所在的方向。
在上述液晶显示装置中，所述第二液晶层的所述第三表面面向所述第一液晶层。
在上述液晶显示装置中，所述第二液晶层的所述第四表面面向所述第一偏光板。
在上述液晶显示装置中，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行。
在上述液晶显示装置中，所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
本发明的另一个目的在于提供一种液晶显示装置，其能避免液晶显示装置出现漏光的现象，提高显示对比度，同时保持TN模式液晶显示装置响应速度快的优点。
为解决上述问题，本发明提供了一种液晶显示装置，包括背光源、第一偏光板、阵列基板、第一液晶层、彩色滤光片基板和第二偏光板，所述背光源、所述第一偏光板、所述阵列基板、所述第一液晶层、所述彩色滤光片基板和所述第二偏光板依次叠加组合为一体，所述第一液晶层包括第一表面和第二表面，所述第一表面上的液晶分子的排列方向与所述第二表面上的液晶分子的排列方向垂直，还包括液晶聚合物膜，所述液晶聚合物膜设置于所述第一偏光板与所述阵列基板之间；或者所述液晶聚合物膜设置于所述彩色滤光片基板与所述第二偏光板之间。
在上述液晶显示装置中，所述液晶聚合物膜内设有第二液晶层，所述第二液晶层中的液晶分子的排列方向与所述液晶聚合物膜所在的平面平行，所述第二液晶层包括第三表面和第四表面，所述第三表面上的液晶分子的排列方向与所述第四表面上的液晶分子的排列方向垂直。
在上述液晶显示装置中，所述第二液晶层具有与所述第一液晶层相同的相位差。
在上述液晶显示装置中，若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述第二液晶层的所述第三表面面向所述第一液晶层，所述第二液晶层的所述第四表面面向所述第一偏光板，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
在上述液晶显示装置中，若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述第二液晶层的所述第三表面面向所述第一液晶层，所述第二液晶层的所述第四表面面向所述第一偏光板，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
在上述液晶显示装置中，若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述第二液晶层的所述第三表面面向所述第二偏光板，所述第二液晶层的所述第四表面面向所述第一液晶层，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
在上述液晶显示装置中，若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述第二液晶层的所述第三表面面向所述第二偏光板，所述第二液晶层的所述第四表面面向所述第一液晶层，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
本发明的另一个目的在于提供一种液晶显示装置制造方法，其能避免液晶显示装置出现漏光的现象，提高显示对比度，同时保持TN模式液晶显示装置响应速度快的优点。
为解决上述问题，本发明提供了一种液晶显示装置制造方法，所述液晶显示装置包括背光源、第一偏光板、阵列基板、第一液晶层、彩色滤光片基板和第二偏光板，所述第一液晶层包括第一表面和第二表面，所述第一表面上的液晶分子的排列方向与所述第二表面上的液晶分子的排列方向垂直，所述方法包括将所述背光源、所述第一偏光板、所述阵列基板、所述第一液晶层、所述彩色滤光片基板和所述第二偏光板依次叠加组合为一体的步骤，所述液晶显示装置还包括液晶聚合物膜，所述方法还包括以下步骤：（A）、将所述液晶聚合物膜设置于所述第一偏光板与所述阵列基板之间；或者（B）、将所述液晶聚合物膜设置于所述彩色滤光片基板与所述第二偏光板之间。
在上述液晶显示装置制造方法中，所述液晶聚合物膜内设有第二液晶层，所述第二液晶层中的液晶分子的排列方向与所述液晶聚合物膜所在的平面平行，所述第二液晶层包括第三表面和第四表面，所述第三表面上的液晶分子的排列方向与所述第四表面上的液晶分子的排列方向垂直。
在上述液晶显示装置制造方法中，所述第二液晶层具有与所述第一液晶层相同的相位差。
在上述液晶显示装置制造方法中，若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述方法还包括以下步骤：（c1）、将所述第二液晶层的所述第三表面面向所述第一液晶层；（c2）、所述第二液晶层的所述第四表面面向所述第一偏光板；（c3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；（c4）、所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
在上述液晶显示装置制造方法中，若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述方法还包括以下步骤：（c1）、将所述第二液晶层的所述第三表面面向所述第一液晶层；（c2）、所述第二液晶层的所述第四表面面向所述第一偏光板；（c3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；（c4）、所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
在上述液晶显示装置制造方法中，若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述方法还包括以下步骤：（d1）、所述第二液晶层的所述第三表面面向所述第二偏光板；（d2）、所述第二液晶层的所述第四表面面向所述第一液晶层；（d3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；（d4）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
在上述液晶显示装置制造方法中，若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述方法还包括以下步骤：（d1）、所述第二液晶层的所述第三表面面向所述第二偏光板；（d2）、所述第二液晶层的所述第四表面面向所述第一液晶层；（d3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；（d4）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
 有益效果
相对现有技术，本发明由于在第一偏光板和阵列基板之间设置有液晶聚合物膜或者在彩色滤光片基板和第二偏光板之间设置有液晶聚合物膜，本发明的液晶聚合物膜能对偏振光起到旋光的作用，第一液晶层起到允许和禁止偏振光在第一偏光板和第二偏光板之间穿透的作用，从根本上解决了TN模式液晶显示装置漏光的技术问题，避免TN模式液晶显示装置出现漏光的现象，提高液晶显示装置的显示对比度，同时保持了传统的TN模式液晶显示装置响应速度快的优点。
 附图说明
图1为本发明的液晶显示装置的第一个实施例在不向液晶施加电压时的状态的示意图；
图2为本发明的液晶显示装置的第一个实施例在向液晶施加电压时的状态的示意图；
图3为本发明的液晶显示装置的第二个实施例在不向液晶施加电压时的状态的示意图；
图4为本发明的液晶显示装置的第二个实施例在向液晶施加电压时的状态的示意图；
图5为本发明的液晶显示装置制造方法的第一个实施例的流程图；
图6为本发明的液晶显示装置制造方法的第二个实施例的流程图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。
本发明旨在提供一种能同时具备响应速度快而且在常态下显示为暗的液晶显示装置，避免传统的TN（Twisted Nematic， 扭曲向列）模式液晶显示装置在暗态状态下出现漏光现象的情况，提高液晶显示装置的显示对比度，适应液晶显示装置对响应速度要求越来越高和对对比度要求越来越高的趋势。
参考图1，图1为本发明的液晶显示装置的第一个实施例在不向液晶施加电压时的状态的示意图。在本实施例中，液晶显示装置包括背光源111、第一偏光板110、阵列基板106、第一液晶层104、彩色滤光片基板102、第二偏光板101。本实施例的液晶显示装置还包括液晶聚合物膜108，该液晶聚合物膜108设置于第一偏光板110与阵列基板106之间。该液晶聚合物膜108的内部具有若干液晶分子，记为第二液晶层，该第二液晶层中的液晶分子的排列方向（即，液晶分子的长轴的方向）与该液晶聚合物膜108所在的平面平行。该第二液晶层具有上下两个表面，分别记为第三表面107和第四表面109，第三表面107上的液晶分子的排列方向（即，液晶分子的长轴的方向）均相同，第四表面109上的液晶分子的排列方向（即，液晶分子的长轴的方向）均相同，并且该第三表面107上的液晶分子的排列方向与该第四表面109上的液晶分子的排列方向垂直。该第二液晶层的第三表面107和第四表面109之间还存在液晶分子，该第二液晶层内的液晶分子沿着该液晶聚合物膜108的法线方向自第三表面107开始至第四表面109结束逐渐旋转一定的角度，即该第二液晶层内的液晶分子自第三表面107开始，沿着该液晶聚合物膜108的法线方向从零度角逐渐旋转至九十度角，至第四表面109结束。该第二液晶层与第一液晶层104相同的相位差，使得本发明的液晶显示装置在常态下是暗的，防止漏光情况的发生。该液晶聚合物膜108与第一偏光板110和阵列基板106的位置关系为：液晶聚合物膜108的第二液晶层的第三表面107面向第一液晶层104，第二液晶层的第四表面109面向第一偏光板110，第二液晶层的第四表面109上的液晶分子的排列方向（即，液晶分子的长轴的方向）与第一偏光板110的穿透轴所在的方向平行，第二液晶层的第三表面107上的液晶分子的排列方向与第一液晶层104的第二表面105上的液晶分子的排列方向平行。
参考图2，图2为本发明的液晶显示装置的第一个实施例在向液晶施加电压时的状态的示意图。在本发明的液晶显示装置中，当阵列基板106向第一液晶层104中的液晶分子施加电压时，该第一液晶层104的液晶分子便会偏转至垂直于阵列基板106和彩色滤光片基板102的状态，由于液晶聚合物膜108的旋光作用，自第一偏光板110出射的偏振光在进入第一液晶层104时的偏振方向便会旋转九十度，第一液晶层104对入射至其中的偏振光不起旋光作用，因此，在经过第一液晶层104和彩色滤光片基板102后，入射至第二偏光板101的偏振光的偏振方向与第二偏光板101的穿透轴所在的方向平行，从而使光能够穿透第一偏光板110和第二偏光板101。
参考图3，图3为本发明的液晶显示装置的第二个实施例在不向液晶施加电压时的状态的示意图。在本实施例中，与第一实施例相同的部分不再赘述。本实施例的液晶显示装置还包括液晶聚合物膜108，该液晶聚合物膜108设置于彩色滤光片基板102和第二偏光板101之间。该液晶聚合物膜108的内部具有若干液晶分子，记为第二液晶层，该第二液晶层中的液晶分子的排列方向（即，液晶分子的长轴的方向）与该液晶聚合物膜108所在的平面平行。该第二液晶层具有上下两个表面，分别记为第三表面107和第四表面109，第三表面107上的液晶分子的排列方向（即，液晶分子的长轴的方向）均相同，第四表面109上的液晶分子的排列方向（即，液晶分子的长轴的方向）均相同，并且该第三表面107上的液晶分子的排列方向与该第四表面109上的液晶分子的排列方向垂直。该第二液晶层的第三表面107和第四表面109之间还存在液晶分子，该第二液晶层内的液晶分子沿着该液晶聚合物膜108的法线方向自第三表面107开始至第四表面109结束逐渐旋转一定的角度，即该第二液晶层内的液晶分子自第三表面107开始，沿着该聚合物膜108的法线方向从零度角逐渐旋转至九十度角，至第四表面109结束，该第二液晶层与第一液晶层104具有相同的相位差，使得本发明的液晶显示装置在常态下是暗的，防止漏光情况的发生。该液晶聚合物膜1080与彩色滤光片基板102和第二偏光板101的位置关系为：液晶聚合物膜108的第二液晶层的第三表面107面向第二偏光板101，第二液晶层的第四表面109面向第一液晶层104。第二液晶层的第四表面109上的液晶分子的排列方向（即，液晶分子的长轴的方向）与第一液晶层104的第一表面103上的液晶分子的排列方向平行，第二液晶层的第三表面107上的液晶分子的排列方向与第二偏光板101的穿透轴所在的方向平行，即，第二液晶层的第四表面109上的液晶分子的排列方向与第一偏光板110的穿透轴所在的方向平行。
参考图4，图4为本发明的液晶显示装置的第二个实施例在向液晶施加电压时的状态的示意图。在本发明的液晶显示装置中，当阵列基板106向第一液晶层104中的液晶分子施加电压时，该第一液晶层104的液晶分子便会偏转至垂直于阵列基板106和彩色滤光片基板102的状态，第一偏光板110向第一液晶层104输出偏振光，该偏振光的偏振方向与液晶聚合物膜108的第四表面109的液晶分子的排列方向平行，第一液晶层104对入射至其中的偏振光不起旋光作用，由于液晶聚合物膜108的旋光作用，自第一偏光板110出射的偏振光在进入第二液晶层时的偏振方向便会旋转九十度，因此入射至第二偏光板101的偏振光的偏振方向便会与第二偏光板101的穿透轴所在的方向平行从而使光能够穿透第一偏光板110和第二偏光板101。
参考图5，图5为本发明的液晶显示装置制造方法的第一个实施例的流程图。在步骤501，将液晶聚合物膜108置于第一偏光板110和阵列基板106之间。在步骤502，设置液晶聚合物膜108的第三表面107和第四表面109的面对方向，具体地，将该液晶聚合物膜108的第三表面107面向阵列基板106，将该液晶聚合物膜108的第四表面109面向第一偏光板110。在步骤503，设置液晶聚合物膜108的第四表面109的液晶分子的排列方向，具体地，该第四表面109的液晶分子的排列方向与第一偏光板110的穿透轴所在的方向平行。在步骤504，设置第一液晶层104的第二表面105的液晶分子的排列方向，使得该第一液晶层104的第二表面105的液晶分子的排列方向与液晶聚合物膜108的第三表面107的液晶分子的排列方向平行。
参考图6，图6为本发明的液晶显示装置制造方法的第二个实施例的流程图。在步骤601，将液晶聚合物膜108置于彩色滤光片基板102和第二偏光板101之间。在步骤502，设置液晶聚合物膜108的第三表面107和第四表面109的面对方向，具体地，将该液晶聚合物膜108的第三表面107面向第二偏光板101，将该液晶聚合物膜108的第四表面109面向彩色滤光片基板102。在步骤603，设置液晶聚合物膜108的第四表面109的液晶分子的排列方向，具体地，该第四表面109的液晶分子的排列方向与第一偏光板110的穿透轴所在的方向平行。在步骤604，设置第一液晶层104的第一表面103的液晶分子的排列方向，使得该第一液晶层104的第一表面103的液晶分子的排列方向与液晶聚合物膜108的第四表面109的液晶分子的排列方向平行。
在本发明中，由于在第一偏光板110和阵列基板106之间设置有液晶聚合物膜108，或者在彩色滤光片基板102和第二偏光板101之间设置有液晶聚合物膜108，因此，本发明的液晶聚合物膜108能对偏振光起到旋光的作用，第一液晶层104起到允许和禁止偏振光在第一偏光板110和第二偏光板101之间穿透的作用，从根本上解决了TN模式液晶显示装置漏光的技术问题。本发明将传统的TN（Twisted Nematic， 扭曲向列）模式液晶显示装置在不向第一液晶层104施加电压时显示为亮态，在向第一液晶层104施加电压时显示为暗态改造成为在不向第一液晶层104施加电压时显示为暗态，在向第一液晶层104施加电压时显示为亮态，因此能避免TN模式液晶显示装置在暗态时出现漏光的现象。此外，本发明保持了传统的TN模式下的液晶显示装置相应速度快的优点。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
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Claims (19)

  1. 一种液晶显示装置，包括背光源、第一偏光板、阵列基板、第一液晶层、彩色滤光片基板和第二偏光板，所述背光源、所述第一偏光板、所述阵列基板、所述第一液晶层、所述彩色滤光片基板和所述第二偏光板依次叠加组合为一体，所述第一液晶层包括第一表面和第二表面，所述第一表面上的液晶分子的排列方向与所述第二表面上的液晶分子的排列方向垂直，其还包括液晶聚合物膜，
    所述液晶聚合物膜设置于所述第一偏光板与所述阵列基板之间；
    所述液晶聚合物膜内设有第二液晶层，所述第二液晶层中的液晶分子的排列方向与所述液晶聚合物膜所在的平面平行，所述第二液晶层包括第三表面和第四表面，所述第三表面上的液晶分子的排列方向与所述第四表面上的液晶分子的排列方向垂直；
    所述第二液晶层具有与所述第一液晶层相同的相位差；
    所述第三表面上的液晶分子的排列方向均相同，所述第四表面上的液晶分子的排列方向均相同，所述液晶分子的排列方向为所述液晶分子的长轴所在的方向。
  2. 根据权利要求1所述的液晶显示装置，其中
    所述第二液晶层的所述第三表面面向所述第一液晶层。
  3. 根据权利要求2所述的液晶显示装置，其中
    所述第二液晶层的所述第四表面面向所述第一偏光板。
  4. 根据权利要求3所述的液晶显示装置，其中
    所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行。
  5. 根据权利要求4所述的液晶显示装置，其中
    所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
  6. 一种液晶显示装置，包括背光源、第一偏光板、阵列基板、第一液晶层、彩色滤光片基板和第二偏光板，所述背光源、所述第一偏光板、所述阵列基板、所述第一液晶层、所述彩色滤光片基板和所述第二偏光板依次叠加组合为一体，所述第一液晶层包括第一表面和第二表面，所述第一表面上的液晶分子的排列方向与所述第二表面上的液晶分子的排列方向垂直，其还包括液晶聚合物膜，
    所述液晶聚合物膜设置于所述第一偏光板与所述阵列基板之间；或者
    所述液晶聚合物膜设置于所述彩色滤光片基板与所述第二偏光板之间。
  7. 根据权利要求6所述的液晶显示装置，其中
    所述液晶聚合物膜内设有第二液晶层，所述第二液晶层中的液晶分子的排列方向与所述液晶聚合物膜所在的平面平行，所述第二液晶层包括第三表面和第四表面，所述第三表面上的液晶分子的排列方向与所述第四表面上的液晶分子的排列方向垂直。
  8. 根据权利要求7所述的液晶显示装置，其中
    所述第二液晶层具有与所述第一液晶层相同的相位差。
  9. 根据权利要求8所述的液晶显示装置，其中
    若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述第二液晶层的所述第三表面面向所述第一液晶层，所述第二液晶层的所述第四表面面向所述第一偏光板，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
  10. 根据权利要求8所述的液晶显示装置，其中
    若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述第二液晶层的所述第三表面面向所述第二偏光板，所述第二液晶层的所述第四表面面向所述第一液晶层，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
  11. 根据权利要求7所述的液晶显示装置，其中
    若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述第二液晶层的所述第三表面面向所述第一液晶层，所述第二液晶层的所述第四表面面向所述第一偏光板，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
  12. 根据权利要求7所述的液晶显示装置，其中
    若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述第二液晶层的所述第三表面面向所述第二偏光板，所述第二液晶层的所述第四表面面向所述第一液晶层，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行，所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
  13. 一种液晶显示装置制造方法，所述液晶显示装置包括背光源、第一偏光板、阵列基板、第一液晶层、彩色滤光片基板和第二偏光板，所述第一液晶层包括第一表面和第二表面，所述第一表面上的液晶分子的排列方向与所述第二表面上的液晶分子的排列方向垂直，所述方法包括将所述背光源、所述第一偏光板、所述阵列基板、所述第一液晶层、所述彩色滤光片基板和所述第二偏光板依次叠加组合为一体的步骤，其中
    所述液晶显示装置还包括液晶聚合物膜，所述方法还包括以下步骤：
    （A）、将所述液晶聚合物膜设置于所述第一偏光板与所述阵列基板之间；或者
    （B）、将所述液晶聚合物膜设置于所述彩色滤光片基板与所述第二偏光板之间。
  14. 根据权利要求13所述的液晶显示装置制造方法，其中
    所述液晶聚合物膜内设有第二液晶层，所述第二液晶层中的液晶分子的排列方向与所述液晶聚合物膜所在的平面平行，所述第二液晶层包括第三表面和第四表面，所述第三表面上的液晶分子的排列方向与所述第四表面上的液晶分子的排列方向垂直。
  15. 根据权利要求14所述的液晶显示装置制造方法，其中
    所述第二液晶层具有与所述第一液晶层相同的相位差。
  16. 根据权利要求15所述的液晶显示装置制造方法，其中
    若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述方法还包括以下步骤：
    （c1）、将所述第二液晶层的所述第三表面面向所述第一液晶层；
    （c2）、所述第二液晶层的所述第四表面面向所述第一偏光板；
    （c3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；
    （c4）、所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
  17. 根据权利要求15所述的液晶显示装置制造方法，其中
    若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述方法还包括以下步骤：
    （d1）、所述第二液晶层的所述第三表面面向所述第二偏光板；
    （d2）、所述第二液晶层的所述第四表面面向所述第一液晶层；
    （d3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；
    （d4）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
  18. 根据权利要求14所述的液晶显示装置制造方法，其中
    若所述液晶聚合物膜置于所述第一偏光板与所述阵列基板之间，所述方法还包括以下步骤：
    （c1）、将所述第二液晶层的所述第三表面面向所述第一液晶层；
    （c2）、所述第二液晶层的所述第四表面面向所述第一偏光板；
    （c3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；
    （c4）、所述第二液晶层的所述第三表面上的液晶分子的排列方向与所述第一液晶层的所述第二表面上的液晶分子的排列方向平行。
  19. 根据权利要求14所述的液晶显示装置制造方法，其中
    若所述液晶聚合物膜置于所述彩色滤光片基板和所述第二偏光板之间，所述方法还包括以下步骤：
    （d1）、所述第二液晶层的所述第三表面面向所述第二偏光板；
    （d2）、所述第二液晶层的所述第四表面面向所述第一液晶层；
    （d3）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一偏光板的穿透轴所在的方向平行；
    （d4）、所述第二液晶层的所述第四表面上的液晶分子的排列方向与所述第一液晶层的所述第一表面上的液晶分子的排列方向平行。
PCT/CN2012/078011 2012-06-15 2012-07-02 液晶显示装置及其制造方法 Ceased WO2013185390A1 (zh)

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CN108563060B (zh) * 2018-01-26 2021-06-01 惠州市华星光电技术有限公司 液晶显示面板和液晶显示装置
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