WO2013185442A1 - Substrat de réseau et son procédé de fabrication, panneau d'affichage à cristaux liquides et son procédé de fonctionnement - Google Patents

Substrat de réseau et son procédé de fabrication, panneau d'affichage à cristaux liquides et son procédé de fonctionnement Download PDF

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Publication number
WO2013185442A1
WO2013185442A1 PCT/CN2012/085770 CN2012085770W WO2013185442A1 WO 2013185442 A1 WO2013185442 A1 WO 2013185442A1 CN 2012085770 W CN2012085770 W CN 2012085770W WO 2013185442 A1 WO2013185442 A1 WO 2013185442A1
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pixel
sub
liquid crystal
electrode
main
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PCT/CN2012/085770
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English (en)
Chinese (zh)
Inventor
谷新
柳在健
张培林
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京东方科技集团股份有限公司
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Publication of WO2013185442A1 publication Critical patent/WO2013185442A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134336—Matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
    • 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
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
    • 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
    • G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/13624—Active matrix addressed cells having more than one switching element per pixel

Definitions

  • Embodiments of the present invention relate to an array substrate and a method of fabricating the same, a liquid crystal display panel, and a method of operating the same. Background technique
  • liquid crystal display technology has developed rapidly, and single-view mode displays have been unable to meet the needs of users.
  • Liquid crystal displays need to have their own ability to switch between wide and narrow viewing angle modes.
  • the wide viewing angle mode is used; when the user wants to protect the display information, the narrow viewing angle mode is used.
  • the viewing angle controllable display is a new type of liquid crystal display that can automatically realize wide and narrow viewing angle mode conversion at any time.
  • most of the view-controlled displays use the added viewing angle control device to control the change in viewing angle.
  • the embodiment of the invention provides an array substrate and a manufacturing method thereof, a liquid crystal display panel and a working method thereof, which can realize different wide and narrow viewing angle display modes of the liquid crystal display panel, and effectively reduce the thickness, cost and energy consumption of the liquid crystal display panel. .
  • An aspect of the invention provides an array substrate, comprising: a substrate and a gate line disposed on the substrate, a data line intersecting the gate line, a plurality of pixel regions, each of the pixel regions including a main pixel region And a sub-pixel region, wherein a main pixel electrode is disposed in the main pixel region, and a sub-pixel electrode is disposed in the sub-pixel region; a main pixel thin film transistor and a sub-pixel thin film transistor are disposed in each of the pixel regions;
  • the data lines of the pixel area providing the data signal include a main pixel data line and a sub-pixel data line; a drain of the main pixel thin film transistor is connected to the main pixel electrode, and a source is connected to the main pixel data line, a gate is connected to a corresponding gate line of the pixel region;
  • the drain of the sub-pixel thin film transistor is connected to the sub-pixel electrode, the source is connected to the sub-pixel data line, and the gate is connected to the
  • Another aspect of the present invention provides a liquid crystal display panel comprising the array substrate provided by the embodiment of the present invention and a counter substrate disposed on the array substrate, wherein the array substrate and the opposite substrate are provided with liquid crystal .
  • a further aspect of the present invention provides a method of fabricating an array substrate, comprising: providing a substrate;
  • a metal thin film on the substrate forming a gate line, a gate of the main pixel thin film transistor, and a gate of the sub-pixel thin film transistor by a patterning process; forming a gate line, a gate of the main pixel thin film transistor, and a sub-pixel film
  • An insulating film is deposited on the substrate of the gate of the transistor; a metal film is deposited on the substrate on which the gate line, the gate of the main pixel thin film transistor, the gate of the sub-pixel thin film transistor, and the insulating film are formed, and data is formed by a patterning process a line, a source and a drain of the main pixel thin film transistor, and a source and a drain of the sub-pixel thin film transistor; an insulating film, a gate line, a data line, a gate of the main pixel thin film transistor, and a source are formed And a transparent conductive film is deposited on the substrate of the gate, the source and the drain of the drain and sub-pixel thin film transistors,
  • a method for operating a liquid crystal display panel includes: controlling a main pixel area and a sub-pixel area by a data signal respectively provided by a main pixel data line and a sub-pixel data line when performing wide viewing angle mode display
  • the liquid crystal is deflected or deformed so that the main pixel region and the sub-pixel region simultaneously transmit light; when performing the narrow viewing angle mode display, the main pixel region and the sub-pixel region are controlled by the data signals respectively provided by the main pixel data line and the sub-pixel data line.
  • the liquid crystal is deflected or deformed so that the main pixel area is transparent, and the sub-pixel area is opaque.
  • the liquid crystal display panel and the working method thereof, the array substrate and the manufacturing method thereof are provided in the embodiment of the present invention, and the main and sub-pixel thin film transistors are respectively arranged on the array substrate to control the main and the second, respectively, compared with the prior art added viewing angle control device.
  • the liquid crystal deflection of the pixel area realizes different display modes, reducing the thickness, cost and power consumption of the liquid crystal display panel.
  • Figure la is a plan view of a pixel area of a liquid crystal display panel according to an embodiment of the present invention.
  • FIG. 1b is a plan view of a plurality of pixel regions of a liquid crystal display panel according to an embodiment of the present invention
  • FIG. 2a is a cross-sectional view of a liquid crystal display panel in a wide viewing angle mode according to an embodiment of the present invention
  • FIG. 2b is a cross-sectional view of a liquid crystal display panel in a narrow viewing angle mode according to an embodiment of the present invention
  • 3a is a cross-sectional view of another liquid crystal display panel in a wide viewing angle mode according to an embodiment of the present invention
  • FIG. 3b is a cross-sectional view of another liquid crystal display panel in a narrow viewing angle mode according to an embodiment of the invention. detailed description
  • Connected” or “connected” and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
  • "Up”, “Down”, “Left”, “Right”, etc. are only used to indicate relative position Relationship, when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
  • the array substrate of the embodiment of the present invention includes a plurality of gate lines and a plurality of data lines, the gate lines and the data lines crossing each other thereby defining pixel units arranged in a matrix, each of the pixel units including a thin film transistor as a switching element and A pixel electrode that controls the arrangement of liquid crystals.
  • the following description is mainly made for a single or a plurality of pixel units, but other pixel units may be formed identically.
  • One embodiment of the present invention provides an array substrate 11 as shown in Figures la, lb, 2a, and 2b.
  • the array substrate 11 includes a substrate 21 on which a gate line 22, a data line 23, and a plurality of pixel regions 24 are disposed; the data lines 23 intersect, for example, perpendicular to the gate lines 22; each pixel region 24 includes two portions: Main pixel area 241 and sub-pixel area 242; data line 23 for providing data signals for each pixel area 24 includes two parts, main pixel data line 231 and sub-pixel data line 232; gates for providing gate signals for each pixel area 24 Line 22 passes through the middle of the pixel area 24, thereby dividing the pixel area 24 into a main pixel area 241 and a sub-pixel area 242.
  • the array substrate 11 includes pixel regions shown by a plurality of layers la or lb.
  • Each of the pixel regions 24 is provided with a main pixel thin film transistor 32 and a sub-pixel thin film transistor 42.
  • the main pixel thin film transistor 32 includes a drain 321 , a source 322 , and a gate 323 .
  • the sub-pixel thin film transistor 42 includes a drain 421 , a source 422 , and a gate 423 .
  • the gate 323 and the gate 423 are both part of the gate line 22 . However, it may be a branch extending from the gate line 22.
  • the main pixel region 241 is provided with a main pixel electrode 31, the drain 321 of the main pixel thin film transistor 32 is connected to the main pixel electrode 31, the source 322 is connected to the main pixel data line 231, and the gate 323 and the gate line of the main pixel thin film transistor 32 are connected. 22 connected.
  • the sub-pixel region 242 is provided with a sub-pixel electrode 41, the drain 421 of the sub-pixel thin film transistor 42 is connected to the sub-pixel electrode 41, the source 422 is connected to the sub-pixel data line 232, and the gate 423 and the gate line of the sub-pixel thin film transistor 42 are connected. 22 connected.
  • the primary and secondary pixel electrodes may be made of a transparent conductive material such as indium tin oxide (ITO), indium oxide (IZO), or the like.
  • ITO indium tin oxide
  • IZO indium oxide
  • the aspect ratio of each of the pixel regions 24 may be 3:1, and the area ratio of the main pixel region and the sub-pixel region may be 4:1 to 1:1.
  • a counter substrate such as a color filter substrate
  • the color filter substrate 12 is disposed on and A thin film transistor on the array substrate 21, a data line, a black matrix corresponding to the position and size of the gate line, and a color film corresponding to the position and size of the main and sub-pixel regions on the array substrate 21.
  • the main pixel electrode 31 uses a FFS (Fringe Field Switching) mode in the horizontal electric field mode, and is distributed in stripes.
  • FFS Flexible Field Switching
  • a common electrode 51 is disposed under the main pixel electrode 31, and an insulating layer 34 is disposed between the common electrode and the main pixel electrode.
  • a horizontal electric field formed between the main pixel electrode 31 and the common electrode 51 controls the deflection of the liquid crystal in the main pixel region.
  • the sub-pixel electrode 41 is distributed in a strip shape by using an oblique electric field mode.
  • a corresponding common electrode 51 with the sub-pixel electrode 41 may be disposed on the color filter substrate 12, and an oblique electric field is formed between the common electrode 51 and the sub-pixel electrode 41 to control the deflection of the liquid crystal in the sub-pixel region.
  • the specific arrangement of the common electrode on the color filter substrate 12 of the present invention is not limited.
  • the main pixel data line provides a data signal for the main pixel region, and a strong horizontal electric field is generated between the common electrode 51 and the main pixel electrode 31, and the main pixel region is controlled.
  • the liquid crystal is deflected to transmit light.
  • the sub-pixel data line 232 provides a data signal for the sub-pixel region, forms an oblique electric field between the common electrode 51 and the sub-pixel electrode 41, controls the deflection of the liquid crystal in the sub-pixel region, and also transmits light.
  • Both the primary and secondary pixel areas are transparent, that is, the wide viewing angle mode.
  • the wide viewing angle display mode can also be implemented when the main pixel area 241 is energized and the sub-pixel area 242 is powered off.
  • the data signal provided by the sub-pixel data line 232 is turned off, so that the liquid crystal of the sub-pixel region returns to the initial position where the light can be transmitted, so that the main pixel region transmits light, and the sub-pixel region transmits light, that is, the wide viewing angle mode. .
  • the main pixel data line provides a data signal for the main pixel region, and a strong horizontal electric field is generated between the common electrode 51 and the main pixel electrode 31, and the main pixel region is controlled.
  • the liquid crystal is deflected to transmit light.
  • the sub-pixel data line provides a data signal for the sub-pixel region, and an oblique electric field is formed between the common electrode 51 and the sub-pixel electrode 41 to control the deflection of the liquid crystal in the sub-pixel region to make the light impenetrable.
  • the main pixel area is transparent, and the sub-pixel area is opaque, that is, a narrow viewing angle display mode.
  • the narrow viewing angle display mode can also be implemented when the main pixel region 241 is energized and the sub-pixel region 242 is powered off.
  • the data signal provided by the sub-pixel data line 232 is turned off, so that the liquid crystal of the sub-pixel region returns to an initial position where the light is not transparent, so that the main pixel region is transparent, and the sub-pixel region is opaque, that is, a narrow viewing angle. mode.
  • the sub-pixel region may also be a vertical electric field type pixel electrode.
  • the color film substrate 12 may be provided with a common electrode corresponding to the vertical electric field type pixel electrode, and for example It is also possible to provide protrusions on the vertical electric field type pixel electrode and the corresponding common electrode to form an oblique electric field in the sub-pixel region.
  • the specific arrangement of the common electrode on the color filter substrate 12 of the present invention is not limited.
  • the sub-pixel region may also adopt a horizontal electric field mode, such as an FFS mode in the horizontal electric field mode, an IPS (In Plane Switching) mode, or other electric field modes, which is not limited in the present invention.
  • the main pixel region can also use the IPS electric field mode or other electric field mode in the horizontal electric field mode, which is not limited in the present invention, and the electric field modes used in the main and sub-pixel regions can be selected and combined as needed.
  • a main pixel region and a sub-pixel region are disposed in each pixel region, and liquid crystal deflections of the main and sub-pixel regions are respectively controlled by the main and sub-pixel thin film transistors.
  • the liquid crystal panel has a wide viewing angle display mode; when the main pixel region is transparent and the sub-pixel region is opaque, the liquid crystal panel is in a narrow viewing angle display mode.
  • the main and sub-pixel thin film transistors are respectively disposed on the array substrate to control the liquid crystal deflection of the main and sub-pixel regions, thereby realizing different display modes, reducing the thickness and cost of the liquid crystal display panel. And energy consumption.
  • the initial position of the sub-pixel region liquid crystal in the orientation in the embodiment of the present invention can be realized by the liquid crystal alignment layer.
  • a liquid crystal alignment layer 14 is disposed on the surface of the array substrate 11 adjacent to the liquid crystal 13, and the liquid crystal alignment layer 14 includes a main pixel region liquid crystal alignment layer 141 corresponding to the main pixel region 241 and corresponds to the sub-pixel region 242.
  • the sub-pixel region liquid crystal alignment layer 142 By the liquid crystal alignment layer 14, the liquid crystals 13 can be aligned in the alignment direction of the liquid crystal alignment layer in the absence of an electric field.
  • the liquid crystal alignment layer is provided in the sub-pixel region so that the light is not transmitted when the liquid crystal is not in an electric field, so that the main pixel can be energized and the sub-pixel region can be turned off to realize a narrow viewing angle mode.
  • the liquid crystal alignment layer is provided in the sub-pixel region 242 so that the light can be transmitted when the liquid crystal has no electric field, so that the main pixel region 241 can be energized, and the sub-pixel region 242 can be turned off to realize the wide viewing angle mode.
  • a common wide viewing angle mode or a narrow viewing angle mode is implemented, which further reduces power consumption.
  • the liquid crystal display panel includes the array substrate 11 provided by the embodiment of the present invention. And a counter substrate 12 disposed opposite to the array substrate (ie, oppositely disposed to form a liquid crystal cell), the counter substrate being, for example, a color filter substrate 12.
  • a liquid crystal 13 is disposed between the array substrate 11 and the color filter substrate 12.
  • a color film for filtering may not be provided on the opposite substrate.
  • the main and sub-pixel thin film transistors are respectively arranged on the array substrate to control the liquid crystal deflection of the main and sub-pixel regions to realize different display.
  • the mode reduces the thickness, cost and energy consumption of the LCD panel.
  • the sub-pixel electrode 41 is an oblique electric field type pixel electrode and distributed in a strip shape
  • the color film substrate 12 is disposed with the oblique electric field.
  • the common electrode 51 corresponding to the pixel electrode.
  • the sub-pixel electrode 41 when the sub-pixel electrode 41 is a vertical electric field type pixel electrode, it is distributed in a sheet shape, and the vertical electric field type pixel electrode may further be provided with a protrusion.
  • a common electrode 51 corresponding to the vertical electric field type pixel electrode is disposed on the color filter substrate 12, and a protrusion may be further disposed on the common electrode.
  • the protrusions provided on the pixel electrode and the common electrode may correspond to each other or may be alternately arranged with each other.
  • a liquid crystal alignment layer is disposed on a surface of the color filter substrate adjacent to the liquid crystal, and the liquid crystal alignment layer includes a main pixel region liquid crystal alignment layer corresponding to the main pixel region. And a sub-pixel region liquid crystal alignment layer corresponding to the sub-pixel region.
  • the liquid crystal 13 is a blue phase liquid crystal having a Kerr effect.
  • the blue phase liquid crystal is an isotropic spherical liquid crystal when it is de-energized, and is anisotropic when it is energized and deformed according to the direction of the electric field.
  • the main pixel electrode 31 uses the IPS electric field mode in the horizontal electric field mode. As shown in FIGS. 3a and 3b, the main pixel electrode 31 is distributed in a strip shape and is divided into a first main pixel electrode 311 and a second main electrode.
  • the pixel electrode 312, the first main pixel electrode 311 and the second main pixel electrode 312 are arranged one on another, and a horizontal electric field is formed between the first pixel element electrode 311 and the second main pixel electrode 312 to control deformation of the blue phase liquid crystal in the main pixel region.
  • the sub-pixel electrode 41 is in an oblique electric field mode, and the sub-pixel electrodes 41 are distributed in a strip shape.
  • a corresponding common electrode 51 to the sub-pixel electrode 41 is disposed on the color filter substrate 12, and an oblique electric field is formed between the common electrode 51 and the sub-pixel electrode 41 to control deformation of the blue phase liquid crystal in the sub-pixel region.
  • the main pixel data line provides a data signal for the main pixel region, and a horizontal electric field is formed between the first main pixel electrode 311 and the second main pixel electrode 312, and the main pixel region is controlled.
  • the blue star liquid crystal deforms to transmit light.
  • Sub-pixel data line The domain provides a data signal, and an oblique electric field is formed between the common electrode 51 and the sub-pixel electrode 41, and the deformation of the blue phase liquid crystal of the sub-pixel region 242 is controlled to transmit light.
  • the main pixel area is transparent, and the sub-pixel area is also transparent, that is, a wide viewing angle mode.
  • the main pixel data line 231 provides a data signal for the main pixel region, and a horizontal electric field is formed between the first main pixel electrode 311 and the second main pixel electrode 312, and the main pixel is controlled.
  • the blue phase liquid crystal of the region 241 is deformed to transmit light.
  • the sub-pixel data line 232 supplies a data signal to the sub-pixel region 242, and forms an oblique electric field between the common electrode 51 and the sub-pixel electrode 41, and controls the deformation of the blue phase liquid crystal of the sub-pixel region 242 to make the light impenetrable.
  • the main pixel area is transparent, and the sub-pixel area is opaque, that is, a narrow viewing angle mode.
  • the narrow viewing angle display mode can also be implemented when the main pixel region 241 is energized and the sub-pixel region 242 is powered off.
  • the blue phase liquid crystal of the sub-pixel region is a spherical liquid crystal when the power is off, and the sub-pixel region is opaque; thus, the main pixel region is transparent, and the sub-pixel region is not transparent.
  • Light that is, a narrow viewing angle mode.
  • the blue phase liquid crystal has a short response time, and the blue phase liquid crystal can greatly improve the response speed of the liquid crystal display panel, presenting a more natural moving picture and improving the display quality.
  • the blue phase liquid crystal is applied to the 3D display, it can reduce the nuisance during 3D display and provide a user experience.
  • the main and sub-pixel thin film transistors are respectively arranged on the array substrate to control the liquid crystal deflection of the main and sub-pixel regions to realize different display. Mode, which can reduce the thickness, cost and energy consumption of the LCD panel.
  • another embodiment of the present invention further provides a method of fabricating the above array substrate, the method comprising the following steps.
  • the substrate is preferably a transparent glass substrate, and may be a plastic substrate or the like.
  • the steps of the patterning process are, for example, first coating or depositing on the metal film to form a layer of photoresist, and masking the portion to be retained by using a mask, such as exposure with ultraviolet light, and then exposing the exposed photoresist. Forming a photoresist pattern; then, etching is performed using the photoresist pattern to remove metal film removed by the photoresist pattern; and finally, the remaining light on the metal film is removed Glue can be used.
  • the patterning process in the other steps is similar and will not be described in detail.
  • An insulating film is deposited on a substrate on which a gate line, a gate of the main pixel thin film transistor, and a gate of the sub-pixel thin film transistor are formed.
  • a transparent conductive film on a substrate formed with an insulating film, a gate line, a data line, a gate of the main pixel thin film transistor, a source, a drain, and a gate, a source, and a drain of the sub-pixel thin film transistor,
  • the main pixel electrode and the sub-pixel electrode are formed by a patterning process.
  • the transparent conductive film may be indium tin oxide, indium oxide or the like.
  • a main pixel region and a sub-pixel region are disposed in each pixel region, and liquid crystal deflections of the main and sub-pixel regions are respectively controlled by the main and sub-pixel thin film transistors.
  • the mode is a wide viewing angle display mode; when the main pixel region is made transparent and the sub-pixel region is opaque, it is a narrow viewing angle display mode.
  • the main and sub-pixel thin film transistors are respectively arranged on the array substrate to control the liquid crystal deflection of the main and sub-pixel regions, thereby realizing different display modes, reducing the thickness and cost of the liquid crystal display panel. And energy consumption.
  • the main pixel region adopts an electric field mode of the FFS mode
  • step 102 is: depositing a metal thin film on the substrate, and forming a gate line, a gate of the main pixel thin film transistor by a patterning process a gate of the sub-pixel thin film transistor and a common electrode.
  • the method further comprises: forming an insulating film, a gate line, a data line, a gate of the main pixel thin film transistor, a source, a drain, a gate of the sub-pixel thin film transistor, a source, a drain, and And a liquid crystal alignment layer is formed on the substrate of the main pixel electrode and the sub-pixel electrode.
  • a photo-alignment material for example, a commercially available photo-alignment material
  • a photo-alignment material is applied to the main pixel regions of the array substrate and the color filter substrate, and is cured to form a liquid crystal alignment layer.
  • a photo-alignment material for example, a commercially available photo-alignment material
  • it is cured at a temperature of 250 ° C for 20 minutes to form an 800 nm liquid crystal alignment layer.
  • the sub-pixel region is first blocked by a mask, and the main pixel region is vertically irradiated with linear ultraviolet polarized light of 254 nm, so that the liquid crystal alignment layer of the main pixel region can align the liquid crystal.
  • the mask is moved to block the sub-pixel region, and the main pixel region is still irradiated with the linear ultraviolet polarization of 254 nm in parallel, so that the liquid crystal alignment layer of the sub-pixel region can align the liquid crystal.
  • a photo-alignment material is applied to the pixel regions of the array substrate and the color filter substrate, and is cured to form a liquid crystal alignment layer.
  • Curing at a temperature of 250 ° C for 20 minutes formed an 800 nm liquid crystal alignment layer.
  • the pixel region is vertically irradiated with linear ultraviolet polarized light of 254 nm so that the liquid crystal alignment layer of the pixel region can align the liquid crystal, and the liquid crystal orientations of the main and sub-pixel regions are oriented in the same direction.
  • the liquid crystals 13 can be aligned in the alignment direction of the liquid crystal alignment layer in the absence of an electric field.
  • orientation direction of the liquid crystal alignment layer of the main and sub-pixel regions may be selected and combined as needed, and the present invention is not limited thereto.
  • the embodiment of the present invention further provides a working method of the above liquid crystal panel, and the method comprises the following steps.
  • the liquid crystal deflection and deformation of the main pixel area and the sub-pixel area are controlled by the data signals respectively provided by the main pixel data line and the sub-pixel data line, so that the main pixel area and the sub-pixel area are simultaneously transparent. Light.
  • the main pixel data line 231 and the sub-pixel data line 232 provide data signals for the primary and secondary pixel electrodes through the main pixel thin film transistor 32 and the sub-pixel thin film transistor 42, respectively, so that a level is generated between the main pixel electrode and the common electrode.
  • the electric field generates a vertical electric field between the sub-pixel electrode and the common electrode, and controls the deflection of the liquid crystal in the main and sub-pixel regions, respectively.
  • the main pixel region uses the electric field of the FFS mode, the main pixel electrode is distributed in a strip shape, the distance between the main pixel electrode and the sub-pixel electrode is small, and the generated electric field is strong, and the main pixel is controlled.
  • the liquid crystal of the area is deflected.
  • the display mode is a wide viewing angle; when the deflection angle of the liquid crystal in the main pixel region can transmit light, and the deflection angle of the liquid crystal in the sub-pixel region is not When light is transmitted, as shown in 2b, it is a narrow viewing angle display mode.
  • the liquid crystal 13 is a blue phase liquid crystal.
  • Main pixel data line The 231 and sub-pixel data lines 232 provide data signals to the main and sub-pixel electrodes through the main pixel thin film transistor 32 and the sub-pixel thin film transistor 42, respectively, to generate a horizontal electric field between the main pixel electrode and the common electrode, and between the sub-pixel electrode and the common electrode.
  • the vertical electric field controls the deformation of the blue phase liquid crystal in the primary and secondary pixel regions, respectively. As shown in FIG. 3a and FIG.
  • the main pixel region uses an electric field of the IPS mode, and the main pixel electrode 31 is distributed in a strip shape, and is divided into a first main pixel electrode 311 and a second main pixel electrode 312, and the first main pixel.
  • the electrode 311 and the second main pixel electrode 312 are arranged one on another, and a horizontal electric field is formed between the first pixel element electrode 311 and the second main pixel electrode 312 to control deformation of the blue phase liquid crystal in the main pixel region.
  • 3a it is a wide viewing angle display mode; when the deformation of the blue phase liquid crystal in the main pixel region can transmit light, and the sub-pixel region blue phase liquid crystal The result of the deformation does not allow light to pass through, as shown in 3b, which is a narrow viewing angle display mode.
  • the working method of the liquid crystal display panel provided by the embodiment of the present invention is similar to the prior art adding the viewing angle control device, and the main and sub-pixel thin film transistors are respectively disposed on the array substrate to control the blue phase liquid crystals of the main and sub-pixel regions respectively. Deformation, achieving different display modes, reducing the thickness, cost and energy consumption of the liquid crystal display panel.
  • the step 201 includes: when performing the wide viewing angle mode, controlling the liquid crystal deflection of the main pixel area by the data signal provided by the main pixel data line, so that the main pixel area is transparent, and the closing is performed by the The data signal provided by the pixel data line controls the liquid crystal of the sub-pixel region not to be deflected or deformed, so that the sub-pixel region is transparent.
  • the step 202 includes: when performing the narrow viewing angle mode display, controlling the liquid crystal deflection or deformation of the main pixel region by using the data signal provided by the main pixel data line, so that the main pixel region is transparent, and the pass-through is closed.
  • the data signal provided by the sub-pixel data line controls the liquid crystal of the sub-pixel region not to be deflected or deformed, so that the sub-pixel region is opaque.
  • the data signals provided by the main and sub-pixel data lines are controlled to be deflected or not deflected; and for the blue phase liquid crystals, the deformation or non-deformation is controlled.
  • the data signal provided by the sub-pixel data line is turned off, and the liquid crystal in the sub-pixel region is controlled not to be deflected or deformed, that is, the liquid crystal alignment direction is an initial arrangement manner when there is no electric field, that is, the initial arrangement of the liquid crystal is used to achieve light transmission or not.
  • the initial alignment direction required can be achieved by the orientation function of the liquid crystal alignment layer.
  • the main and sub-pixel regions are transparent, the main pixel region is light-transmissive, and the sub-pixel region is opaque to a narrow viewing angle mode. This further reduces energy consumption.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Geometry (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un substrat de réseau (11) et son procédé de fabrication, un panneau d'affichage à cristaux liquides et son procédé de fonctionnement, de façon à mettre en œuvre différents modes d'affichage, et en même temps à réduire l'épaisseur, le coût et la consommation d'énergie d'un panneau d'affichage à cristaux liquides. Le substrat de réseau (11) comprend un substrat (21), une ligne de grille (22) disposée sur le substrat (21), une ligne de données (23) croisant la ligne de grille (22), et une pluralité de régions de pixel (24). Chaque région de pixel (24) comprend une région de pixel principal (241) et une région de sous-pixel (242). Un transistor en couches minces de pixel principal et un transistor en couches minces de sous-pixel (32, 42) sont disposés sur chaque région de pixel (24). Une électrode de pixel principal et une électrode de sous-pixel (31, 41) sont prévues sur la région de pixel principal et la région de sous-pixel (241, 242), respectivement. La ligne de données (23) permettant de fournir un signal de données à chaque région de pixel (24) comprend une ligne de données de pixel principal (231) et une ligne de données de sous-pixel (232).
PCT/CN2012/085770 2012-06-15 2012-12-03 Substrat de réseau et son procédé de fabrication, panneau d'affichage à cristaux liquides et son procédé de fonctionnement WO2013185442A1 (fr)

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CN102707528B (zh) * 2012-06-15 2016-06-08 京东方科技集团股份有限公司 阵列基板及其制作方法、液晶显示面板及其工作方法
CN104280953A (zh) * 2014-10-24 2015-01-14 京东方科技集团股份有限公司 一种显示面板及其制作方法
CN104460138B (zh) * 2014-12-31 2017-10-24 深圳市华星光电技术有限公司 一种可切换视角的液晶显示面板及其驱动方法
CN104808844A (zh) * 2015-04-03 2015-07-29 深超光电（深圳）有限公司 触控显示装置
CN104808378B (zh) * 2015-05-14 2017-12-29 深圳市华星光电技术有限公司 用于制作液晶显示面板的方法及液晶显示面板
CN105068351B (zh) * 2015-08-28 2018-01-09 武汉华星光电技术有限公司 蓝相液晶显示模组、蓝相液晶显示器及其制作方法
CN105093766B (zh) 2015-09-15 2018-11-23 深圳市华星光电技术有限公司 一种蓝相液晶显示面板
KR102577171B1 (ko) * 2016-10-31 2023-09-08 엘지디스플레이 주식회사 표시장치와 그의 구동방법
CN112859395B (zh) * 2021-01-13 2023-05-02 惠州市华星光电技术有限公司 一种阵列基板及液晶显示面板
CN114637138B (zh) * 2022-03-31 2023-05-30 广州华星光电半导体显示技术有限公司 液晶显示面板及其驱动方法

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