WO2014190730A1 - 半透半反式液晶面板、显示装置、阵列基板、彩膜基板及制作方法 - Google Patents

半透半反式液晶面板、显示装置、阵列基板、彩膜基板及制作方法 Download PDF

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Publication number
WO2014190730A1
WO2014190730A1 PCT/CN2013/089322 CN2013089322W WO2014190730A1 WO 2014190730 A1 WO2014190730 A1 WO 2014190730A1 CN 2013089322 W CN2013089322 W CN 2013089322W WO 2014190730 A1 WO2014190730 A1 WO 2014190730A1
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Prior art keywords
liquid crystal
substrate
common electrode
color filter
crystal layer
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Ceased
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PCT/CN2013/089322
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English (en)
French (fr)
Inventor
崔贤植
李会
徐智强
严允晟
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US14/380,845 priority Critical patent/US9513506B2/en
Publication of WO2014190730A1 publication Critical patent/WO2014190730A1/zh
Anticipated expiration legal-status Critical
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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G02F1/133555—Transflectors
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode

Definitions

  • Embodiments of the present invention relate to a transflective liquid crystal panel, a display device, an array substrate, a color filter substrate, and a method of fabricating the same. Background technique
  • the liquid crystal display panel can be divided into: reflective, transmissive and transflective.
  • the reflective liquid crystal display panel uses ambient light around the liquid crystal display panel as an illumination source, and the reflective liquid crystal display panel is provided with a reflective surface for reflecting ambient light. Since the reflective liquid crystal display panel has no backlight, the power consumption is relatively It is low, but the picture is not easy to watch when the surrounding ambient light is dim.
  • a backlight is provided on the back surface of the thin film transistor array substrate of the liquid crystal display panel, and the backlight emitted from the backlight is transmitted through the liquid crystal display panel to display a desired screen.
  • the transflective liquid crystal display panel can be regarded as a combination of a transmissive and reflective liquid crystal display panel, and is provided with a reflective area and a transmissive area, and can be simultaneously displayed by using a backlight and an external light source.
  • the transflective liquid crystal display panel has the advantages of both transmissive and reflective liquid crystal display panels, and can be used indoors in a dark environment to display bright images, or can be used outdoors. Therefore, it is widely used in display devices for portable mobile electronic products.
  • the liquid crystal display panel can be further divided into: TN type (Twisted Nematic), IPS type (In Plane Switching), and ADS type (Advanced Super Dimension Switch). .
  • the liquid crystal display panel of the ADS display mode rotates all liquid crystal molecules between the electrodes or directly above the electrodes.
  • the ADS display mode has high picture quality, high resolution, high transmittance, and low power consumption. , wide viewing angle, high aperture ratio, low chromatic aberration, and waterless ripple (Push Mura).
  • a transflective liquid crystal display panel including: a first substrate; a second substrate disposed opposite to the first substrate; and the first substrate and the first substrate A liquid crystal layer between the two substrates.
  • the liquid crystal display panel includes a plurality of pixel units, and the pixel unit includes: a transmissive area and a reflective area, wherein a thickness of the liquid crystal layer corresponding to the transmissive area is equal to a thickness of the liquid crystal layer corresponding to the reflective area.
  • a surface of the first substrate facing the liquid crystal layer is provided with a first common electrode corresponding to the reflective area and the transmissive area, and a second common electrode corresponding to the transmissive area.
  • a surface of the second substrate facing the liquid crystal layer is provided with a pixel electrode corresponding to the transmissive area and the reflective area, and a side of the second substrate facing the liquid crystal layer is provided with a reflective layer corresponding to the reflective area, the reflection The layer is disposed below the pixel electrode of the reflective area.
  • a first electric field strength between the second common electrode and a pixel electrode of the transmissive area is equal to twice a second electric field strength between the first common electrode and a pixel electrode of the reflective area.
  • the pixel electrode in the pixel unit includes a plurality of pixel electrodes arranged at intervals, and the voltages of the two adjacent pixel electrodes are equal and opposite in polarity.
  • a surface of the first common electrode facing the liquid crystal layer is provided with a color filter film, and the second common electrode is located on a side of the color filter film facing the liquid crystal layer.
  • a surface of the first common electrode facing the liquid crystal layer is provided with a color filter film, and a surface of the color filter film facing the liquid crystal layer is further provided with a transmission layer, and the second common electrode is located at the transmission layer. To one side of the liquid crystal layer.
  • the first substrate is further provided with a first polarizer on a side facing away from the liquid crystal layer; and a second polarizer is further disposed on a side of the second substrate facing away from the liquid crystal layer.
  • the light transmission axis directions of the first polarizer and the second polarizer are perpendicular to each other.
  • the first polarizer and the second polarizer are polarizers incorporating a ⁇ /4 phase retardation film.
  • the pixel electrode is a strip electrode.
  • a side of the first substrate facing the liquid crystal layer is further provided with: a first alignment layer corresponding to the entire transmissive area and the reflective area and covering the second common electrode; and the second substrate is facing One side of the liquid crystal layer is further provided with a second alignment layer corresponding to the entire transmissive area and the reflective area and covering the pixel electrode.
  • a display device comprising the transflective liquid crystal display panel as described above.
  • a color film substrate is further provided, including: a substrate substrate; a first common electrode disposed on a side of the substrate substrate facing the liquid crystal layer corresponding to the reflective region and the transmissive region, and a second common electrode corresponding to the transmissive area; and a color filter film disposed on a side of the first common electrode facing the liquid crystal layer.
  • the second common electrode is located on a side of the color filter film facing the liquid crystal layer.
  • the color filter substrate further includes: a transmissive layer disposed on a side of the color filter film facing the liquid crystal layer, wherein the second common electrode is located on a side of the transmissive layer facing the liquid crystal layer.
  • an array substrate including: a plurality of pixel units, each of which is provided with a plurality of pixel electrodes arranged at intervals, and voltages of two adjacent pixel electrodes are equal The opposite polarity is provided; a reflective layer is disposed at a reflective area corresponding to the pixel unit, and a pixel electrode of the reflective area is disposed on the reflective layer.
  • a method for fabricating a color filter substrate includes: providing a village substrate; forming a first common electrode, a color filter on a portion of the substrate substrate corresponding to the transmissive region and the reflective region a light film; a second common electrode is formed at a portion of the village substrate corresponding to the transmission region.
  • the step of forming the first common electrode and the color filter film on the portion of the substrate substrate corresponding to the transmissive region and the reflective region includes: forming a first common portion in a portion of the substrate substrate corresponding to the transmissive region and the reflective region An electrode; the color filter film is formed on the first common electrode.
  • the step of forming the second common electrode in the portion of the village substrate corresponding to the transmissive region includes: forming the second common electrode at a portion of the color filter film corresponding to the transmissive region.
  • the method further includes: forming a transmissive layer on the color filter film; corresponding to the transmissive region of the substrate substrate.
  • the step of forming the second common electrode includes: forming the second common electrode at a portion of the transmission layer corresponding to the transmission region.
  • FIG. 1 is a structure of a transflective liquid crystal display panel in an unpowered state according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing another structure of a transflective liquid crystal display panel according to an embodiment of the present invention when no power is applied;
  • FIG. 3 is a schematic view showing a reflective state of a liquid crystal display panel of FIG. 1 in a bright state and a dark state;
  • FIG. 4 is a schematic view showing a transparent region and a dark state of a transmission region of the liquid crystal display panel shown in FIG. 1;
  • 1 is a schematic structural view of a transflective liquid crystal display panel shown in FIG. 1;
  • FIG. 6 is a schematic structural view of a color filter substrate of the transflective liquid crystal display panel shown in FIG. detailed description
  • an embodiment of the present invention provides a transflective liquid crystal display panel, including: a first substrate 11; the first substrate 11 may be, for example, a color filter substrate; opposite to the first substrate 11
  • the second substrate 21 is provided, for example, an array substrate, preferably a thin film transistor array substrate, and a liquid crystal layer 31 disposed between the first substrate 11 and the second substrate 21.
  • a surface of the first substrate 11 facing the liquid crystal layer 31 is provided with a first common electrode 12 corresponding to the reflective area and the transmissive area, and a second common electrode 15 corresponding to the transmissive area.
  • a surface of the second substrate 21 facing the liquid crystal layer 31 is provided with a pixel electrode corresponding to the transmissive area and the reflective area.
  • the pixel electrode is a plurality of pixel electrodes 23 arranged at intervals, and the voltages of the two adjacent pixel electrodes are equal and opposite in polarity.
  • the pixel electrode may be a strip electrode.
  • the pixel electrode may also be other regularly shaped electrodes.
  • a reflective layer 22 is disposed on the second substrate 21 corresponding to the reflective region, and the reflective layer 22 is disposed Below the pixel electrode 23 of the reflective area.
  • a first electric field intensity E1 between the second common electrode 15 and the pixel electrode 23 of the transmissive area is equal to a second electric field strength E2 between the first common electrode 12 and the pixel electrode 23 of the reflective area 2 times.
  • the liquid crystal layer of the transmissive region When the liquid crystal display panel of the embodiment of the present invention is displayed, the liquid crystal layer of the transmissive region generates a phase retardation amount of: dl x Anl, and the phase retardation amount of the liquid crystal layer of the reflective region is: 2 d2 ⁇ 2 relax ⁇ nl And ⁇ 2 are the phase delays generated when the light passes through the liquid crystal in the transmissive region and the reflective region, respectively; dl is the thickness of the liquid crystal layer in the transmissive region, and is also the optical path of the transmissive region, that is, the distance of the light passing through the liquid crystal layer; d2 is the reflective region The thickness of the liquid crystal layer, 2 x d2, is the optical path of the liquid crystal layer through which the ambient light passes through the reflective region.
  • a first electric field intensity E1 between the second common electrode 14 and the pixel electrode 23 of the transmissive area is equal to the first common electrode 12 and the pixel electrode 23 of the reflective area.
  • ⁇ ⁇ dl 2 ⁇ ⁇ 2 ⁇ d2
  • the liquid crystal of the transmissive region and the phase retardation amount of the liquid crystal in the reflection region are matched, and finally the transflective display effect is achieved.
  • a surface of the first common electrode 12 facing the liquid crystal layer is provided with a color filter film 13, and the second common electrode 15 is located on a side of the color filter film 13 facing the liquid crystal layer, and the The thickness of the color filter film 13 is such that the distance between the pixel electrode of the transmissive area and the second common electrode 15 is 1/2 of the distance between the pixel electrode of the area and the first common electrode 12;
  • a color filter film 13 is disposed on a surface of the first common electrode 12 facing the liquid crystal layer, and the color filter film surface 13 is further provided with a transmission layer 14 on one side of the liquid crystal layer, the second common The electrode 15 is located on a side of the transmissive layer 14 facing the liquid crystal layer, and the distance between the pixel electrode of the transmissive area and the second common electrode 15 can be adjusted by adjusting the thickness of the color filter film and the thickness of the transmissive layer. ⁇ 1/2 of the distance between the area pixel electrode and the first common electrode 12.
  • the thickness of the color filter film may be 2.5 microns, and the thickness of the transmission layer 14 may be any value between 1.5 microns and 3 microns.
  • the first substrate 11 is further provided with a first polarizer 10 on a side facing away from the liquid crystal layer; and a second polarizer 20 is further disposed on a side of the second substrate 21 facing away from the liquid crystal layer.
  • the light transmitting axis directions of the first polarizer 10 and the second polarizer 20 are perpendicular to each other.
  • the first polarizer 10 and the second polarizer 20 may be 90-degree and 0-degree polarizers, respectively.
  • the first polarizer 10 and the second polarizer 20 may be polarizers incorporating a ⁇ /4 phase retardation film.
  • the ⁇ /4 phase retardation film is located on the side of the first polarizer 10 facing the first substrate 11 and is located at the second offset
  • the light sheet 20 faces one side of the second substrate 21.
  • the liquid crystal molecules in the liquid crystal layer are parallel to the light transmission axis direction of the first polarizer 10 or the second polarizer 20 Orientation (as shown in Figure 1), that is, when no electric field is applied, the liquid crystal molecules are not deflected, and do not delay the passing light, and only the linearly polarized light that is consistent with the direction of the light transmission axis of the polarizer can pass through.
  • the polarizer therefore, the liquid crystal display panel is a dark field when no electric field is applied.
  • the data lines in the same pixel unit of the array substrate are not limited in number, as long as the adjacent pixel electrodes are applied with the same magnitude and opposite polarity voltages. In this embodiment, only The case of two data lines is explained.
  • the first substrate 11 may face One side of the liquid crystal layer is provided with: a first alignment layer 16 corresponding to the entire transmissive region and the reflective region and covering the second common electrode 15; and a side of the second substrate 21 facing the liquid crystal layer is provided with: A second alignment layer 24 corresponding to the entire transmissive area and the reflective area and covering the pixel electrode.
  • the orientation directions of the first alignment layer 16 and the second alignment layer 24 may be set to coincide with the light transmission axis direction of the first polarizer 10, that is, perpendicular to the light transmission axis of the second polarizer 20;
  • the orientation directions of the first alignment layer 16 and the second alignment layer 24 may be set to coincide with the light transmission axis direction of the second polarizer 20, that is, perpendicular to the light transmission axis of the first polarizer 10.
  • 3 is a schematic diagram of realizing a bright state and a dark state of a reflective region in the embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing a bright state and a dark state of a transmissive region according to an embodiment of the present invention;
  • the polarization direction of the first polarizer 10 is a vertical direction (such as a 90-degree polarizer) and the polarization direction of the second polarizer 20 is a horizontal direction (such as a 0-degree polarizer).
  • the embodiment of the present invention does not. Limited to this.
  • the principle of the liquid crystal display panel for displaying the bright state and the dark state is as follows:
  • the ambient light is natural light, which is a collection of linearly polarized light in various directions, and the ambient light passes through the first polarizer 10 (such as a 90-degree polarizer), and is generated in parallel with the light transmission axis direction of the first polarizer 10.
  • the first polarizer 10 such as a 90-degree polarizer
  • Circularly polarized light the right-handed circularly polarized light enters the liquid crystal layer again, passes through the first ⁇ /4 phase retardation film again without delay, and becomes linearly polarized light perpendicular to the light transmission axis of the first polarizer 10, and therefore cannot Emitting from the first polarizer 10 to form a dark state of the reflective region;
  • the light emitted from the backlight passes through the second polarizer 20 (eg, a 0-degree polarizer), wherein the light transmitting axis of the second polarizer 20 and the light transmitting axis direction of the first polarizer 10 vertical.
  • the light emitted by the backlight is similar to natural light, and is a collection of linearly polarized light in various directions.
  • the light passes through the second polarizer 20, and generates linearly polarized light parallel to the axial direction of the second polarizer 20, and passes through the second.
  • the first ⁇ /4 phase retardation film and the first polarizer 10 are composited in the same optical film
  • the phase retardation film and the second polarizer 20 are also composited in the same optical film, but in order to clearly describe the implementation of the present embodiment, they are separately described in terms of their effects on light.
  • the ⁇ /4 phase retardation film and the polarizer may be formed separately.
  • both the transmissive area and the reflective area are in a bright state, and the specific light simulation is shown in the column of the bright state in FIG. 3 and FIG. 4, when the voltage is applied to the liquid crystal display panel.
  • the liquid crystal molecules in the liquid crystal layer of the transmissive region and the reflective region are deflected by the fringe field effect (as shown in FIG. 5), and the polarized light passes through the liquid crystal layer, causing a ⁇ /2 phase delay, as follows:
  • ambient light passes through the first polarizer 10 to generate a polarization direction and a first polarizer.
  • the light of 10 passes through the linearly polarized light parallel to the axial direction and passes through the first ⁇ /4 phase retardation film, thereby generating left-handed circularly polarized light, and the left-handed circularly polarized light passes through the liquid crystal layer due to the ⁇ /2 phase of the liquid crystal molecules of the liquid crystal layer.
  • the light becomes linearly polarized light whose polarization direction is perpendicular to the transmission axis of the first polarizer, and then passes through the reflective layer, and after being delayed by ⁇ /2 of the reflective layer, the polarization direction and the light transmittance of the first polarizer remain.
  • the light emitted from the backlight passes through the second polarizer 20 (eg, a 0-degree polarizer), and the light passes through the second polarizer 20 because the light of the second polarizer 20 passes through the axial direction in the horizontal direction.
  • the second polarizer 20 eg, a 0-degree polarizer
  • the embodiment of the present invention can realize the transflective display of the liquid crystal display panel of a single cell thickness (i.e., the thickness of the liquid crystal layer in the transmissive region is equal to the thickness of the liquid crystal layer of the reflective region). Further, while the transflective liquid crystal display panel realizes the dark state and the bright state display, the same two pixels of opposite polarity and opposite polarity are applied to the adjacent two pixel electrodes in the pixel unit, and the picture can be realized.
  • the above-mentioned transflective liquid crystal display panel of the embodiment of the present invention realizes display while ensuring uniformity and stability of the displayed picture.
  • Embodiments of the present invention also provide a display device including the transflective liquid crystal display panel as described above.
  • an embodiment of the present invention further provides a color filter substrate, including:
  • the substrate substrate 11 is the same as the first substrate 11 in the liquid crystal display panel embodiment; the first common electrode 12 corresponding to the reflective region and the transmissive region is disposed on a side of the substrate substrate facing the liquid crystal layer, And a second common electrode 15 corresponding to the transmissive area;
  • the color filter film 13 is disposed on a side of the first common electrode 12 facing the liquid crystal layer.
  • the second common electrode 15 is located on a side of the color filter film 13 facing the liquid crystal layer.
  • the color filter substrate further includes: a transmissive layer 14 disposed on a surface of the color filter film 13 facing the liquid crystal layer, wherein the second common electrode 15 is located on a side of the transmissive layer 14 facing the liquid crystal layer.
  • a side of the substrate substrate facing the liquid crystal layer is further provided with: a first alignment layer corresponding to the entire transmissive region and the reflective region and covering the common electrode.
  • the color filter substrate described in this embodiment is used for a transflective liquid crystal display panel or a display device.
  • An embodiment of the present invention further provides an array substrate, including: a plurality of pixel units, each of which is provided with a plurality of pixel electrodes arranged at intervals, and the voltages of the two adjacent pixel electrodes are equal and opposite in polarity.
  • the pixel electrode may be a strip electrode or other regular forms.
  • the pixel unit is provided with a reflective layer corresponding to the reflective area, and the pixel electrode of the reflective area is disposed above the reflective layer.
  • a side of the substrate substrate facing the liquid crystal layer is further provided with a second alignment layer corresponding to the entire transmissive region and the reflective region and covering the pixel electrode.
  • the array substrate provided in this embodiment is applied to a transflective liquid crystal display panel or a display device.
  • An embodiment of the present invention further provides a method for fabricating a color filter substrate, including:
  • Step 11 providing a village bottom substrate
  • Step 12 forming a first common electrode and a color filter film on a portion of the substrate substrate corresponding to the transmissive area and the reflective area;
  • Step 13 Form a second common electrode on a portion of the village substrate corresponding to the transmission region.
  • step 12 includes:
  • Step 121 forming a first common electrode in a portion of the village substrate corresponding to the transmissive area and the reflective area;
  • Step 122 forming the color filter film on the first common electrode.
  • step 13 may include:
  • Step 131 forming the second common electrode in a portion of the color filter film corresponding to the transmissive area.
  • the method further includes: Step 123, forming a transparent layer on the color filter film;
  • the above step 13 may include: forming the second common electrode at a portion of the transmission layer corresponding to the transmissive area.
  • the manufacturing method provided in this embodiment is for producing a color filter substrate which is capable of realizing a transflective display effect, which is used in the above liquid crystal display panel or display device.

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Abstract

一种半透半反式液晶显示面板、显示装置、阵列基板、彩膜基板及制作方法。半透半反式液晶显示面板包括：第一基板（11）；与第一基板（11）相对设置的第二基板（21）；设置于第一基板（11）和第二基板（21）之间的液晶层（31）。液晶显示面板包括多个像素单元，像素单元包括：透射区域和反射区域；透射区域对应的液晶层（31）厚度（d1）等于反射区域对应的液晶层（31）的厚度（d2）。第一基板（11）面向液晶层（31）的一面设有对应于反射区域和透射区域的第一公共电极（12），以及对应于透射区域的第二公共电极（15）。第二基板（21）面向液晶层（31）的一面设有对应于透射区域和反射区域的像素电极（23），并且第二基板（21）面向液晶层（31）的一面设有对应于反射区域的反射层（22），反射层（22）设置在反射区域的像素电极（23）的下方。第二公共电极（15）与透射区域的像素电极（23）之间的第一电场强度（E1）等于第一公共电极（12）与反射区域的像素电极（23）之间的第二电场强度（E2）的2倍。

Description

半透半反式液晶面板、 显示装置、 阵列基板、 彩膜基板及制作方法 技术领域
本发明的实施例涉及一种半透半反式液晶面板、 显示装置、 阵列基板、 彩膜基板及制作方法。 背景技术
液晶显示面板按照光源可以分为： 反射式、 透射式和半透半反式。 反射 式液晶显示面板是利用液晶显示面板周围的环境光作为照明光源， 在反射式 液晶显示面板中设有用于反射环境光的反射面， 反射式液晶显示面板由于自 身没有背光源， 耗电量相对较低， 但是在周围的环境光偏暗的情况下， 画面 不易观看。
透射式液晶显示面板是在液晶显示面板的薄膜晶体管阵列基板的背面设 置背光源， 利用背光源发出的背景光透过液晶显示面板， 显示需要的画面。
半透半反式液晶显示面板则可视为透射式与反射式液晶显示面板的结 合， 既设置有反射区， 又设置有透射区， 可以同时利用背光源以及外界光源 进行显示。
半透半反式液晶显示面板兼具透射式和反射式液晶显示面板的优点， 既 可以在暗的环境下显示明亮的图像而在室内使用，也可以在室外使用。 因此， 它被广泛用于便携式移动电子产品的显示设备。
目前，液晶显示面板按照显示模式还可以分为： TN型（ Twisted Nematic, 扭曲向列）、 IPS型（ In Plane Switching ,平面转换 )和 ADS型（ Advanced Super Dimension Switch, 高级超维场转换）等。 ADS显示模式的液晶显示面板是 使在电极之间或者电极正上方的所有液晶分子发生旋转， 相对于 IPS显示模 式， ADS显示模式具有高画面品质、 高分辨率、 高透过率、低功耗、 宽视角、 高开口率、 低色差、 无水波纹（Push Mura )等优点。 发明内容 根据本发明的一个实施例， 提供一种半透半反式液晶显示面板， 包括： 第一基板； 与所述第一基板相对设置的第二基板； 设置于所述第一基板和所 述第二基板之间的液晶层。 所述液晶显示面板包括多个像素单元， 所述像素 单元包括： 透射区域和反射区域， 所述透射区域对应的液晶层厚度等于所述 反射区域对应的液晶层的厚度。 所述第一基板面向所述液晶层的一面设有对 应于反射区域和透射区域的第一公共电极， 以及对应于透射区域的第二公共 电极。 所述第二基板面向所述液晶层的一面设有对应于透射区域和反射区域 的像素电极， 并且所述第二基板面向所述液晶层的一面设有对应于反射区域 的反射层， 该反射层设置在所述反射区域的像素电极的下方。 所述第二公共 电极与所述透射区域的像素电极之间的第一电场强度等于所述第一公共电极 与所述反射区域的像素电极之间的第二电场强度的 2倍。
例如， 所述像素单元内所述像素电极包括多个间隔排列的像素电极， 且 相邻的两个所述像素电极的电压相等， 极性相反。
例如， 所述第一公共电极面向液晶层的一面设有彩色滤光膜， 所述第二 公共电极位于所述彩色滤光膜面向液晶层的一面。
例如， 所述第一公共电极面向液晶层的一面设有彩色滤光膜， 所述彩色 滤光膜面向液晶层的一面还设有透过层， 所述第二公共电极位于所述透过层 面向液晶层的一面。
例如， 所述第一基板在背向所述液晶层的一面还设有第一偏光片； 所述 第二基板背向所述液晶层的一面还设有第二偏光片。
例如， 所述第一偏光片和所述第二偏光片的光透过轴方向相互垂直。 例如， 所述第一偏光片和所述第二偏光片为内置有 λ /4相位延迟膜的偏 光片。
例如， 所述像素电极为条状电极。
例如， 所述第一基板面向所述液晶层的一侧还设有： 对应于整个透射区 域和反射区域且覆盖所述第二公共电极的第一取向层； 并且所述第二基板上 面向所述液晶层的一侧还设有对应于整个透射区域和反射区域且覆盖所述像 素电极的第二取向层。
根据本发明的另一个实施例， 提供一种显示装置， 包括如上所述的半透 半反式液晶显示面板。 根据本发明的再一个实施例， 还提供一种彩膜基板， 包括： 村底基板； 设置于所述村底基板面向液晶层的一面的对应于反射区域和透射区域的第一 公共电极， 以及对应于透射区域的第二公共电极； 以及设置于所述第一公共 电极面向液晶层的一面的彩色滤光膜。
例如， 所述第二公共电极位于所述彩色滤光膜面向液晶层的一面。
例如， 所述彩膜基板还包括： 设置于所述彩色滤光膜面向液晶层的一面 的透过层， 所述第二公共电极位于所述透过层面向液晶层的一面。
根据本发明的又一个实施例，提供一种阵列基板， 包括： 多个像素单元， 每个像素单元内设有多个间隔排列的像素电极， 且相邻的两个所述像素电极 的电压相等， 极性相反； 对应于所述像素单元的反射区域处设有反射层， 所 述反射区域的像素电极设置于所述反射层之上。
根据本发明的又一个实施例， 提供一种彩膜基板的制作方法， 包括： 提 供一村底基板； 在所述村底基板对应于透射区域和反射区域的部分形成第一 公共电极、 彩色滤光膜； 在所述村底基板的对应于透射区域的部分形成第二 公共电极。
例如， 在所述村底基板对应于透射区域和反射区域的部分形成第一公共 电极、 彩色滤光膜的步骤包括： 在所述村底基板对应于透射区域和反射区域 的部分形成第一公共电极； 在所述第一公共电极上形成所述彩色滤光膜。
例如， 在所述村底基板对应于透射区域的部分形成第二公共电极的步骤 包括： 在所述彩色滤光膜对应于透射区域的部分形成所述第二公共电极。
例如， 在所述村底基板的对应于透射区域的部分形成第二公共电极的步 骤之前还包括： 在所述彩色滤光膜上形成透过层； 在所述村底基板的对应于 透射区域的部分形成第二公共电极的步骤包括： 在所述透过层对应于透射区 域的部分形成所述第二公共电极。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为根据本发明实施例的半透半反式液晶显示面板在不加电时的结构 示意图；
图 2为根据本发明实施例的半透半反式液晶显示面板的在不加电时的另 一结构示意图；
图 3为图 1所示的液晶显示面板的反射区域实现亮态和暗态的示意图； 图 4为图 1所示的液晶显示面板的透射区域实现亮态和暗态的示意图； 图 5为图 1所示的半透半反式液晶显示面板在加电时的结构示意图； 图 6为图 1所示的半透半反式液晶显示面板的彩膜基板的结构示意图。 具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图， 对本发明实施例的技术方案进行清楚、 完整地描述。 显然， 所描述的实施例 是本发明的一部分实施例， 而不是全部的实施例。 基于所描述的本发明的实 施例， 本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实 施例， 都属于本发明保护的范围。
需要说明的是， 下面的描述主要针对单个像素单元进行， 但是其他像素 单元可以相同地形成。
如图 1所示，本发明的实施例提供一种半透半反式液晶显示面板， 包括： 第一基板 11; 该第一基板 11例如可以是彩膜基板； 与所述第一基板 11相对 设置的第二基板 21 , 该第二基板 21例如可以是阵列基板， 优选是薄膜晶体 管阵列基板； 设置于所述第一基板 11和所述第二基板 21之间的液晶层 31。 所述半透半反式液晶显示面板包括多个像素单元， 所述像素单元包括： 透射 区域和反射区域;所述透射区域的液晶层厚度 dl等于所述反射区域的液晶层 的厚度 d2, 即 dl=d2。
所述第一基板 11面向所述液晶层 31的一面设有对应于反射区域和透射 区域的第一公共电极 12, 以及对应于透射区域的第二公共电极 15。
所述第二基板 21面向所述液晶层 31的一面设有对应于透射区域和反射 区域的像素电极。 例如， 所述像素电极为多个间隔排列的像素电极 23, 且相 邻的两个所述像素电极的电压相等， 极性相反。 例如， 所述像素电极可以为 条状电极。 当然， 所述像素电极也可以是其它规则形状的电极。
所述第二基板 21上对应于反射区域处设有反射层 22,该反射层 22设置 在所述反射区域的像素电极 23的下方。
所述第二公共电极 15与所述透射区域的像素电极 23之间的第一电场强 度 E1等于所述第一公共电极 12与所述反射区域的像素电极 23之间的第二 电场强度 E2的 2倍。
本发明的该实施例所述的液晶显示面板在显示时， 透射区域的液晶层产 生的相位延迟量为： dl x Anl, 反射区域的液晶层产生的相位延迟量为： 2 d2 Δη2„ △ nl 和△ η2分别为光线在透射区和反射区通过液晶时产生的 相位延迟； dl为透射区域的液晶层的厚度， 也为透射区域的光程， 即光线通 过液晶层的距离； d2为反射区域的液晶层的厚度， 2 x d2为外部环境光通过 反射区域的液晶层的光程。
要实现半透半反显示， 光线通过透射区域的液晶层产生的相位延迟量和 光线通过反射区域的液晶层产生的相位延迟量要匹配， 即 dl x Anl =2x d2 Δη2, 由于 dl = d2, 因此， 需要使 Δηΐ = 2 χ Δη2。 在本发明的实施例中， 由于所述第二公共电极 14与所述透射区域的像素电极 23之间的第一电场强 度 E1等于所述第一公共电极 12与所述反射区域的像素电极 23之间的第二 电场强度 Ε2的 2倍， 即 E1 = 2 X Ε2, 所以可以使透射区域的液晶层的液晶 在第一电场强度 E1的作用下产生的延迟量 Δηΐ为反射区域的液晶层的液晶 在第二电场强度 Ε2的作用下产生的延迟量 Δη2的两倍。 也就是， 由于 El = 2 Ε2, 所以 Δη1 = 2 χ Δη2。 整体效果上看， Δηΐ χ dl = 2 χ Δη2 χ d2, 透 射区域的液晶和反射区域的液晶的相位延迟量相匹配， 并最终达到半透半反 的显示效果。
此外， 当在像素单元中相邻的两个像素电极 23施加大小相同、且极性相 反的电压时， 可以实现画面的均匀和稳定， 原因如下。
通过为阵列基板的同一像素单元的两根相邻的数据线施加大小相等， 极 性相反的输入电压， 使得在两根数据线中的第一数据线通过 TFT (薄膜晶体 管） 为像素电极传递第一强度的电压信号， 第二数据线为像素电极传递第二 强度的电压信号时，第一强度的电压信号与第二强度的电压信号的电量相等， 极性相反， 这样第一数据线与像素电极所产生的耦合电容与第二数据线与像 素电极所产生的耦合电容的大小相等， 由于第一强度的电压信号与第二强度 的电压信号的极性相反， 当第一数据线与像素电极所产生的第一耦合电容导 致的跳变电压使像素电极电压增大时， 第二数据线与像素电极所产生的第二 耦合电容导致的跳变电压则会使像素电极电压降低， 第一耦合电容与第二耦 合电容引起的像素电极的跳变电压相互抵消， 使像素电极的电压趋于稳定， 从而避免了由于数据线与像素电极之间的耦合电容而产生的跳变电压导致画 面显示不均匀的现象。
为了实现上述 Ε1 = 2 χ Ε2, 根据均匀电场场强公式： E=U/d ( d为沿场强 方向两点间距离， U为沿场强方向两点间的电压） ， 可以看出， 可以在透射 区域施加的像素电极与第二公共电极 15之间的电压是在反射区域施加的像 素电极与第一公共电极 12之间的电压的 2倍；或者使透射区域像素电极与第 二公共电极 15之间的距离 ^^射区域像素电极与第一公共电极 12之间的距 离的 1/2。
为了使透射区域像素电极与第二公共电极 15之间的距离^ ^射区域像 素电极与第一公共电极之间的距离的 1/2, 可以通过下述方式实现：
第一种： 所述第一公共电极 12面向液晶层的一面设有彩色滤光膜 13, 所述第二公共电极 15位于所述彩色滤光膜 13面向液晶层的一面， 可通过调 整所述彩色滤光膜 13的厚度， 使透射区域像素电极与第二公共电极 15之间 的距离^^射区域像素电极与第一公共电极 12之间的距离的 1/2;
第二种： 所述第一公共电极 12面向液晶层的一面设有彩色滤光膜 13, 所述彩色滤光膜面 13向液晶层的一面还设有透过层 14, 所述第二公共电极 15位于所述透过层 14面向液晶层的一面， 可通过调整所述彩色滤光膜的厚 度以及所述透过层的厚度,使透射区域像素电极与第二公共电极 15之间的距 离^^射区域像素电极与第一公共电极 12之间的距离的 1/2。
上述两种实现方式中， 彩色滤光膜的厚度可以为 2.5微米， 而透过层 14 的厚度可以 1.5微米 -3微米之间任一值。
例如，所述第一基板 11在背向所述液晶层的一面还设有第一偏光片 10; 所述第二基板 21背向所述液晶层的一面还设有第二偏光片 20。 所述第一偏 光片 10和所述第二偏光片 20的光透过轴方向相互垂直， 例如所述第一偏光 片 10和所述第二偏光片 20可以分别为 90度和 0度偏光片。另外，所述第一 偏光片 10和所述第二偏光片 20可以为内置有 λ /4相位延迟膜的偏光片。 λ /4相位延迟膜位于第一偏光片 10面向第一基板 11的一面， 并且位于第二偏 光片 20面向第二基板 21的一面。
上述液晶显示面板在实现显示的过程中， 未在像素电极与公共电极之间 加电场时， 液晶层中的液晶分子沿着第一偏光片 10或者第二偏光片 20的光 透过轴方向平行取向（如图 1所示）， 即在未加电场时， 液晶分子没有偏转， 不会对通过的光线产生延迟作用， 且由于只有与偏光片的光透过轴方向一致 的线偏光才能透过偏光片， 因此， 未加电场时， 液晶显示面板为暗场。
需要说明的是,上述阵列基板的同一像素单元中的数据线并不限制数量， 只要保证相邻的像素电极被施加大小相同、 且极性相反的电压即可， 在本实 施例中， 仅以两根数据线的情况进行说明。
进一步地， 如图 2所示， 为了使液晶层中的液晶分子的快速轴方向和第 一偏光片 10或者第二偏光片 20的光透过轴方向平行，还可以在第一基板 11 面向所述液晶层的一侧设有： 对应于整个透射区域和反射区域且覆盖所述第 二公共电极 15的第一取向层 16;在第二基板 21上面向所述液晶层的一侧设 有： 对应于整个透射区域和反射区域且覆盖所述像素电极的第二取向层 24。
例如， 可以将第一取向层 16和第二取向层 24的取向方向设置为与第一 偏光片 10的光透过轴方向一致， 即与第二偏光片 20的光透过轴垂直；反之， 也可以将第一取向层 16和第二取向层 24的取向方向设置为与第二偏光片 20 的光透过轴方向一致， 即与第一偏光片 10的光透过轴垂直。这样在未加电场 图 3为本发明实施例中反射区域实现亮态和暗态的示意图， 图 4为本发 明实施例中透射区域实现亮态和暗态的示意图； 图 3和图 4仅以第一偏光片 10的偏振方向为竖直方向（如 90度偏光片）而第二偏光片 20的偏振方向为 水平方向 （如 0度偏光片）为例进行说明， 但本发明的实施例不局限于此。
如图 3和图 4所示， 结合液晶显示面板的上述具体结构， 液晶显示面板 实现亮态和暗态显示的原理如下：
( 1 )在液晶显示面板未加电压时， 透射区域和反射区域均呈暗态， 其具 体的光线模拟情况如图 3和图 4中的暗态一栏中所示：
在反射区域内， 环境光为自然光， 是各个方向上的线偏振光的集合， 环 境光通过第一偏光片 10 (如 90度偏光片）， 产生和第一偏光片 10光透过轴 方向平行的线偏振光，并经过第一 λ /4相位延迟膜，从而产生左旋圓偏振光， 左旋圓偏振光经过液晶层， 由于液晶层的液晶分子未有电场影响， 对左旋圓 偏振光无延迟作用，所以左旋圓偏振光进入反射层，经过反射层 λ /2延迟后， 变成右旋圓偏振光， 该右旋圓偏振光再次进入液晶层， 无延迟并再次通过第 一 λ /4相位延迟膜， 变成和第一偏光片 10光透过轴垂直的线偏振光， 因此， 无法从第一偏光片 10射出， 从而形成反射区域的暗态；
在透射区域内， 从背光源发射出的光线经过第二偏光片 20 (如 0度偏光 片） ， 其中， 第二偏光片 20的光透过轴和第一偏光片 10的光透过轴方向垂 直。 背光源发出的光线近似于自然光， 是各个方向上的线偏振光的集合， 光 线通过第二偏光片 20,产生和第二偏光片 20光透过轴方向平行的线偏振光， 并经过第二 λ /4相位延迟膜， 从而产生右旋圓偏振光， 右旋圓偏振光经过液 晶层， 由于液晶层的液晶分子未有电场影响， 对右旋圓偏振光无延迟作用， 所以右旋圓偏振光直接进入第一 λ /4相位延迟膜， 变成和第一偏光片 10光 透过轴垂直的线偏振光， 因此， 无法从第一偏光片 10射出，从而形成透射区 域的暗态。
需要说明的是， 在本发明实施例的半透半反式液晶显示面板结构中， 第 一 λ /4相位延迟膜和第一偏光片 10是复合在同一光学膜中的， 第二 λ /4相 位延迟膜和第二偏光片 20也是复合在同一光学膜中的，但为了清楚地描述本 实施例的实施过程， 按照对光的作用不同予以分开描述。 显然， 在本发明的 实施例中， λ /4相位延迟膜和偏光片也可以分开形成。
( 2 )在液晶显示面板加电压时， 透射区域和反射区域均呈亮态， 其具体 的光线模拟情况如图 3和图 4中的亮态一栏中所示， 在液晶显示面板加电压 时， 透射区域和反射区域的液晶层中的液晶分子在边缘场效应的作用下偏转 排列 （如图 5所示） ， 偏振光在通过液晶层时， 发生 λ /2相位延迟， 具体情 况如下：
在反射区域内， 环境光通过第一偏光片 10, 产生偏振方向和第一偏光片
10的光透过轴方向平行的线偏振光， 并经过第一 λ /4相位延迟膜， 从而产生 左旋圓偏振光， 左旋圓偏振光经过液晶层， 由于液晶层的液晶分子的 λ /2相 位延迟， 光线变成偏振方向和第一偏光片的光透过轴垂直的线偏振光， 再经 过反射层， 经过反射层的 λ /2延迟后， 依然为偏振方向和第一偏光片的光透 过轴垂直的线偏振光，光线再次进入液晶层经过延迟后， 变成右旋圓偏振光， 再次通过第一 λ /4相位延迟膜， 变成偏振方向和第一偏光片 10的光透过轴 平行的线偏振光，从而能够通过第一偏光片 10射出，从而形成反射区域的亮 态；
在透射区域内， 从背光源发射出的光线经过第二偏光片 20 (如 0度偏光 片）， 由于第二偏光片 20的光透过轴方向沿水平方向， 光线通过第二偏光片 20,产生偏振方向与第二偏光片 20的光透过轴平行的线偏振光，并经过第二 λ /4相位延迟膜， 从而产生右旋圓偏振光， 再经过液晶层的 λ /2相位延迟， 变成左旋圓偏振光， 然后直接进入第一 λ /4相位延迟膜， 变成偏振方向与第 一偏光片 10的光透过轴平行的线偏振光， 从而能够通过第一偏光片 10 (如 上述 90度的偏光片）射出， 形成透射区域的亮态。
可见， 本发明的实施例可以实现单盒厚（即透射区域的液晶层厚度等于 所述反射区域的液晶层厚度） 的液晶显示面板的半透半反显示。 进一步的， 上述半透半反式液晶显示面板在实现暗态以及亮态显示的同时， 由于像素单 元中相邻的两个像素电极施加大小相同、 且极性相反的电压， 还可以实现画 面的均匀和稳定， 因此本发明实施例的上述半透半反式液晶显示面板实现显 示的同时， 还可以保证显示的画面的均匀和稳定。
本发明的实施例还提供一种显示装置， 包括如上所述的半透半反式液晶 显示面板。
如图 6所示， 本发明的实施例还提供一种彩膜基板， 包括：
村底基板 11 , 即与上述液晶显示面板实施例中的第一基板 11相同； 设置于所述村底基板面向所述液晶层的一面的对应于反射区域和透射区 域的第一公共电极 12, 以及对应于透射区域的第二公共电极 15; 以及
设置于所述第一公共电极 12面向液晶层的一面的彩色滤光膜 13。
所述第二公共电极 15位于所述彩色滤光膜 13面向液晶层的一面。
例如，上述彩膜基板还包括：设置于所述彩色滤光膜 13面向液晶层的一 面的透过层 14,所述第二公共电极 15位于所述透过层 14面向液晶层的一面。
例如， 所述村底基板面向所述液晶层的一侧还设有： 对应于整个透射区 域和反射区域且覆盖所述公共电极的第一取向层。
该实施例所述的彩膜基板用于半透半反的液晶显示面板或者显示装置。 本发明的实施例还提供一种阵列基板， 包括： 多个像素单元， 每个像素单元内设有多个间隔排列的像素电极， 且相邻 的两个所述像素电极的电压相等， 极性相反。 例如， 所述像素电极可以为条 状电极， 也可以为其它规则形态。
像素单元对应于反射区域处设有反射层， 所述反射区域的像素电极设置 于所述反射层之上。
例如， 所述村底基板面向所述液晶层的一侧还设有对应于整个透射区域 和反射区域且覆盖所述像素电极的第二取向层。
该实施例提供的阵列基板应用于半透半反液晶显示面板或者显示装置。 本发明的实施例还提供一种彩膜基板的制作方法， 包括：
步骤 11 , 提供一村底基板；
步骤 12,在所述村底基板对应于透射区域和反射区域的部分形成第一公 共电极、 彩色滤光膜；
步骤 13, 在所述村底基板的对应于透射区域的部分形成第二公共电极。 例如， 步骤 12包括：
步骤 121 , 在所述村底基板对应于透射区域和反射区域的部分形成第一 公共电极；
步骤 122, 在所述第一公共电极上形成所述彩色滤光膜。
例如， 上述步骤 13可以包括：
步骤 131 , 在所述彩色滤光膜对应于透射区域的部分形成所述第二公共 电极。
例如， 上述步骤 13之前还包括： 步骤 123, 在所述彩色滤光膜上形成透 过层；
相应的，上述步骤 13可以包括：在所述透过层对应于透射区域的部分形 成所述第二公共电极。
该实施例提供的制作方法用于制作上述液晶显示面板或者显示装置所采 用的能够实现半透半反显示效果的彩膜基板。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、 一种半透半反式液晶显示面板， 包括： 第一基板； 与所述第一基板相 对设置的第二基板； 设置于所述第一基板和所述第二基板之间的液晶层； 其 中
所述液晶显示面板包括多个像素单元， 所述像素单元包括： 透射区域和 反射区域， 所述透射区域对应的液晶层厚度等于所述反射区域对应的液晶层 的厚度；
所述第一基板面向所述液晶层的一面设有对应于反射区域和透射区域的 第一公共电极， 以及对应于透射区域的第二公共电极；
所述第二基板面向所述液晶层的一面设有对应于透射区域和反射区域的 像素电极， 并且所述第二基板面向所述液晶层的一面设有对应于反射区域的 反射层， 该反射层设置在所述反射区域的像素电极的下方； 并且
所述第二公共电极与所述透射区域的像素电极之间的第一电场强度等于 所述第一公共电极与所述反射区域的像素电极之间的第二电场强度的 2倍。
2、根据权利要求 1所述的半透半反式液晶显示面板，其中所述像素单元 内所述像素电极包括多个间隔排列的像素电极， 且相邻的两个所述像素电极 的电压相等， 极性相反。
3、根据权利要求 1或 2所述的半透半反式液晶显示面板，其中所述第一 公共电极面向液晶层的一面设有彩色滤光膜， 所述第二公共电极位于所述彩 色滤光膜面向液晶层的一面。
4、根据权利要求 1或 2所述的半透半反式液晶显示面板，其中所述第一 公共电极面向液晶层的一面设有彩色滤光膜， 所述彩色滤光膜面向液晶层的 一面还设有透过层， 所述第二公共电极位于所述透过层面向液晶层的一面。
5、根据权利要求 1-4任一项所述的半透半反式液晶显示面板， 其中所述 第一基板在背向所述液晶层的一面还设有第一偏光片； 所述第二基板背向所 述液晶层的一面还设有第二偏光片。
6、根据权利要求 5所述的半透半反式液晶显示面板，其中所述第一偏光 片和所述第二偏光片的光透过轴方向相互垂直。
7、根据权利要求 5或 6所述的半透半反式液晶显示面板，其中所述第一 偏光片和所述第二偏光片为内置有 λ /4相位延迟膜的偏光片。
8、根据权利要求 2所述的半透半反式液晶显示面板，其中所述像素电极 为条状电极。
9、 根据权利要求 1-8任一项所述的半透半反式液晶显示面板， 其中 所述第一基板面向所述液晶层的一侧还设有： 对应于整个透射区域和反 射区域且覆盖所述第二公共电极的第一取向层； 并且
所述第二基板上面向所述液晶层的一侧还设有对应于整个透射区域和反 射区域且覆盖所述像素电极的第二取向层。
10、 一种显示装置， 其中包括如权利要求 1-9任一项所述的半透半反式 液晶显示面板。
11、 一种彩膜基板， 包括：
村底基板；
设置于所述村底基板面向液晶层的一面的对应于反射区域和透射区域的 第一公共电极， 以及对应于透射区域的第二公共电极； 以及
设置于所述第一公共电极面向液晶层的一面的彩色滤光膜。
12、根据权利要求 11所述的彩膜基板，其中所述第二公共电极位于所述 彩色滤光膜面向液晶层的一面。
13、根据权利要求 11所述的彩膜基板， 其中所述彩膜基板还包括： 设置 于所述彩色滤光膜面向液晶层的一面的透过层， 所述第二公共电极位于所述 透过层面向液晶层的一面。
14、 一种阵列基板， 包括：
多个像素单元， 每个像素单元内设有多个间隔排列的像素电极， 且相邻 的两个所述像素电极的电压相等， 极性相反；
对应于所述像素单元的反射区域处设有反射层， 所述反射区域的像素电 极设置于所述反射层之上。
15、 一种彩膜基板的制作方法， 包括：
提供一村底基板；
在所述村底基板对应于透射区域和反射区域的部分形成第一公共电极、 彩色滤光膜；
在所述村底基板的对应于透射区域的部分形成第二公共电极。
16、根据权利要求 15所述的彩膜基板的制作方法，其中在所述村底基板 对应于透射区域和反射区域的部分形成第一公共电极、 彩色滤光膜的步骤包 括：
在所述村底基板对应于透射区域和反射区域的部分形成第一公共电极； 在所述第一公共电极上形成所述彩色滤光膜。
17、 根据权利要求 15或 16所述的彩膜基板的制作方法， 其中在所述村 底基板对应于透射区域的部分形成第二公共电极的步骤包括：
在所述彩色滤光膜对应于透射区域的部分形成所述第二公共电极。
18、根据权利要求 15所述的彩膜基板的制作方法，其中在所述村底基板 的对应于透射区域的部分形成第二公共电极的步骤之前还包括：
在所述彩色滤光膜上形成透过层；
在所述村底基板的对应于透射区域的部分形成第二公共电极的步骤包 括：
在所述透过层对应于透射区域的部分形成所述第二公共电极。
PCT/CN2013/089322 2013-05-27 2013-12-13 半透半反式液晶面板、显示装置、阵列基板、彩膜基板及制作方法 Ceased WO2014190730A1 (zh)

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