WO2013010482A1 - 液晶面板及其制备方法、液晶显示装置 - Google Patents

液晶面板及其制备方法、液晶显示装置 Download PDF

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Publication number
WO2013010482A1
WO2013010482A1 PCT/CN2012/078814 CN2012078814W WO2013010482A1 WO 2013010482 A1 WO2013010482 A1 WO 2013010482A1 CN 2012078814 W CN2012078814 W CN 2012078814W WO 2013010482 A1 WO2013010482 A1 WO 2013010482A1
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Prior art keywords
substrate
liquid crystal
pixel electrode
common electrode
crystal panel
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PCT/CN2012/078814
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English (en)
French (fr)
Inventor
秦广奎
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京东方科技集团股份有限公司
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Priority to US13/701,670 priority Critical patent/US20130120679A1/en
Publication of WO2013010482A1 publication Critical patent/WO2013010482A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13398—Spacer materials; Spacer properties
    • 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
    • G02F1/136222—Colour filters incorporated in the active matrix substrate

Definitions

  • liquid crystal display device Liquid crystal panel and preparation method thereof, liquid crystal display device
  • Embodiments of the present invention relate to a liquid crystal panel, a method of fabricating the same, and a liquid crystal display device. Background technique
  • IPS In-Plane Switching
  • the advantages of In-Plane Switching (IPS) technology are wide viewing angle, fast response speed, and accurate color reproduction.
  • the products obtained are high-end products in LCD panels.
  • the biggest feature of the panel using IPS technology is that the common electrode and the pixel electrode are all on the same plane, and a horizontal electric field is formed between the two after voltage is applied.
  • the common electrode and the pixel electrode are in two upper and lower planes, and a vertical electric field is formed therebetween.
  • the IPS technology optimizes the arrangement of liquid crystal molecules in a horizontal arrangement; when an external force is encountered, the molecular structure is slightly depressed downward, but the liquid crystal molecules are also horizontal as a whole.
  • a panel using IPS technology is generally referred to as a liquid crystal panel using a hard screen technology.
  • Advanced-Super Dimensional Switching is a wide-angle technology developed by the LCD industry to solve large-size, high-definition desktop displays and LCD TV applications. It is also a hard-screen technology.
  • the technique forms a multi-dimensional electric field by a parallel electric field generated by the pixel electrode or the common electrode edge in the same plane and a longitudinal electric field generated between the pixel electrode and the common electrode in different planes, so that the pixel electrode and the common electrode in the liquid crystal cell are between pixels All of the aligned liquid crystal molecules directly above the electrode or the common electrode are capable of rotating conversion, thereby improving the working efficiency of the planar alignment liquid crystal material and increasing the light transmission efficiency.
  • Advanced super-dimensional field switching technology improves TFT-LCD picture quality with high transmittance, wide viewing angle, high aperture ratio, low chromatic aberration, low response time, and no push mura ripple.
  • the AD-SDS technology overcomes the problem of low light transmission efficiency of the conventional IPS technology, and achieves high light transmission efficiency under the premise of wide viewing angle. However, whether it is a liquid crystal panel using IPS technology or AD-SDS technology, the response time is still not ideal, and the viewing angle width also has room for improvement. Summary of the invention
  • a liquid crystal panel comprises: a thin film crystal A body tube (TFT) substrate, a color film (CF) substrate, a liquid crystal layer filled between the TFT substrate and the CF substrate, a pixel electrode for driving the liquid crystal, and a common electrode.
  • TFT thin film crystal A body tube
  • CF color film
  • the pixel electrode and the common electrode are respectively disposed on the TFT substrate and the CF substrate in the same manner, and the pixel electrode on the TFT substrate is opposite to the pixel electrode on the CF substrate and is applied With the same voltage signal, the common electrode on the TFT substrate is opposed to the common electrode on the CF substrate and the same voltage signal is applied.
  • a liquid crystal display device includes a polarizer and a liquid crystal panel as described above.
  • a display device includes a backlight and a liquid crystal display device.
  • the liquid crystal display device includes the liquid crystal panel as described above.
  • the liquid crystal panel includes: a thin film transistor (TFT) substrate, a color film (CF) substrate, a liquid crystal layer filled between the TFT substrate and the CF substrate, a pixel electrode, and a common electrode.
  • TFT thin film transistor
  • CF color film
  • the method includes: disposing the pixel electrode and the common electrode on the TFT substrate and the CF substrate in the same manner, so that the pixel electrode on the TFT substrate and the CF substrate are The pixel electrodes are opposite and the common electrode on the TFT substrate is opposite to the common electrode on the CF substrate; and the same signal voltage is applied to the pixel electrode on the TFT substrate and the pixel electrode on the CF substrate And applying the same signal voltage on the common electrode on the TFT substrate and the common electrode on the CF substrate.
  • a liquid crystal panel according to an embodiment of the present invention in a thin film transistor (TFT) substrate and a color film
  • Opposing pairs of pixel electrodes and common electrodes are disposed on the (CF) substrate, and the same electrodes on the two substrates are turned on.
  • the LCD panel has a faster response time, and can greatly reduce the driving voltage applied to the electrodes, widening the viewing angle, and providing conditions for timing color control, and further can be applied to the blue phase technology.
  • FIG. 1 is a schematic structural diagram of a liquid crystal panel of an IPS mode
  • FIG. 2 is a schematic structural diagram of a liquid crystal panel of the AD-SDS mode
  • FIG. 3 is a schematic structural diagram of another liquid crystal panel of the AD-SDS mode
  • FIG. 4a is a schematic structural diagram of a liquid crystal panel of an IPS mode according to an embodiment of the present invention.
  • 4b is a schematic structural diagram of a liquid crystal panel of an AD-SDS mode according to an embodiment of the present invention
  • 5 is a working principle diagram of a liquid crystal panel of an IPS mode according to an embodiment of the present invention
  • FIG. 6 is a schematic flow chart of a method of fabricating a liquid crystal panel according to an embodiment of the invention.
  • Fig. 9 is a view showing a comparison of transmittance and voltage relationship of a liquid crystal panel according to a conventional technique and an IPS according to an embodiment of the present invention. detailed description
  • FIG. 1 shows the structure of a liquid crystal panel in IPS mode.
  • the IPS liquid crystal panel includes an array substrate 1, a color filter substrate (CF) 2, and a liquid crystal layer (LC) filled between the color filter substrate and the array substrate.
  • the pixel (Pixel) electrode 3 and the common (Com) electrode 4 are disposed on the TFT substrate, and they are alternately arranged on the same plane in an electrically insulated state.
  • the liquid crystal panel includes an array (TFT) substrate 1, a color filter substrate (CF) 2, and a liquid crystal layer (LC) filled between the color filter substrate and the array substrate.
  • the Com electrode 4 is disposed on the TFT substrate, and the insulating layer 5 is covered on the Com electrode 4, and the pixel electrode 3 is provided on the insulating layer 5.
  • the Com electrode 4 does not have a slit-like opening, and the pixel electrode 3 has a slit-like opening.
  • the liquid crystal panel includes an array (TFT) substrate 1, a color filter substrate (CF) 2, and a liquid crystal layer (LC) filled between the color filter substrate and the array substrate.
  • the pixel electrode 3 is disposed on the TFT substrate 1, and the insulating layer 5 is covered on the pixel electrode 3, and the Com electrode 4 is provided on the insulating layer 5.
  • the pixel electrode 3 does not have a slit shape
  • the mouth, and the Com electrode 4 has a slit-like opening.
  • FIG. 4a is a schematic structural view of a liquid crystal panel of an IPS mode according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of the operation of a liquid crystal panel of an IPS mode according to an embodiment of the present invention.
  • the liquid crystal panel includes: a TFT substrate 41, a CF substrate 42, a pixel electrode 43, and a common electrode 44.
  • the pixel electrode 43 and the common electrode 44 are alternately arranged on the same plane in an electrically insulated state.
  • the pixel electrode 43 and the common electrode 44 are disposed in the same manner as the TFT substrate 41.
  • the pixel electrode 43 on the TFT substrate 41 and the pixel electrode 43 on the CF substrate 42 are opposed to each other and the same voltage signal is applied, and the common electrode 44 on the TFT substrate 41 and the common electrode 44 on the CF substrate 42 are opposed to each other and applied with the same voltage signal. Voltage signal.
  • the above-described pixel electrode 43 and common electrode 44 may be formed on the TFT substrate 41 and the CF substrate 42 by an etching process.
  • the above-described pixel electrode 43 and common electrode 44 may be made of a metal material.
  • the pixel electrode 43 on the TFT substrate 41 and the pixel electrode 43 on the CF substrate 42 can be electrically connected to each other to apply the same voltage signal thereto.
  • the common electrode 44 on the TFT substrate 41 and the common electrode 44 on the CF substrate 42 can be electrically connected to each other to apply the same voltage signal thereto.
  • the same electrode on the array substrate 41 and the CF substrate 42 can be electrically conducted by a spacer made of a conductive material.
  • spacers made of a conductive material may be placed between the pixel electrode 43 on the array substrate 41 and the pixel electrode 41 on the CF substrate 42 to make them conductive to each other.
  • spacers made of a conductive material may be placed between the common electrode 44 on the array substrate 41 and the common electrode 44 on the CF substrate 42 to make them conductive to each other.
  • FIG. 4b is a schematic structural view of a liquid crystal panel of an AD-SDS mode according to an embodiment of the present invention.
  • the device includes: a TFT substrate 41, a CF substrate 42, a pixel electrode 43, and a common electrode 44.
  • a Com electrode 44 is provided on the TFT substrate 41, an insulating layer 45 is covered on the Com electrode 44, and a pixel electrode 43 is provided on the insulating layer 45.
  • the pixel electrode 43 has a slit-like opening.
  • the pixel electrode 43 and the common electrode 44 are provided in the same manner as the TFT substrate 41.
  • TFT substrate The pixel electrode 43 on the 41 and the pixel electrode 43 on the CF substrate 42 are opposed to each other and the same voltage signal is applied, and the common electrode 44 on the TFT substrate 41 and the common electrode 44 on the CF substrate 42 are opposed to each other and the same voltage is applied. signal.
  • a pixel electrode 43 is provided on the TFT substrate 41, an insulating layer 45 is covered on the pixel electrode 43, and a Com electrode 44 is provided on the insulating layer 45.
  • the Com electrode 44 has a slit-like opening.
  • the pixel electrode 43 and the common electrode 44 are disposed in the same manner as the TFT substrate 41.
  • the pixel electrode 43 on the TFT substrate 41 and the pixel electrode 43 on the CF substrate 42 are opposed to each other and the same voltage signal is applied, and the common electrode 44 on the TFT substrate 41 and the common electrode 44 on the CF substrate 42 are opposed to each other and applied with the same Voltage signal.
  • the above-described pixel electrode 43 and common electrode 44 may be formed on the TFT substrate 41 and the CF substrate 42 by an etching process.
  • the above-described pixel electrode 43 and common electrode 44 may be formed of a transparent electrode such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • the pixel electrode 43 on the TFT substrate 41 and the pixel electrode 43 on the CF substrate 42 can be electrically connected to each other to apply the same voltage signal thereto.
  • the common electrode 44 on the TFT substrate 41 and the common electrode 44 on the CF substrate 42 can be electrically connected to each other to apply the same voltage signal thereto.
  • the same electrode on the array substrate 41 and the CF substrate 42 can be electrically conducted by a spacer made of a conductive material.
  • spacers made of a conductive material may be placed between the pixel electrode 43 on the array substrate 41 and the pixel electrode 41 on the CF substrate 42 to make them conductive to each other.
  • spacers made of a conductive material may be placed between the common electrode 44 on the array substrate 41 and the common electrode 44 on the CF substrate 42 to make them conductive to each other.
  • FIG. 6 is a schematic flow chart of a method of fabricating a liquid crystal panel according to an embodiment of the invention.
  • the method can be used to fabricate a liquid crystal panel in an IPS mode or an AD-SDS mode.
  • the method of this embodiment includes the following steps:
  • Step 501 The pixel electrode and the common electrode are disposed in the same manner on the TFT substrate and the CF substrate.
  • the pixel electrode on the TFT substrate is opposite to the pixel electrode on the CF substrate, and the common electrode on the TFT substrate is opposite to the common electrode on the CF substrate. .
  • the pixel electrode and the common electrode are formed on the TFT substrate and the CF substrate, respectively, by a patterning process such as etching.
  • the material of the electrode is, for example, metal
  • the material of the electrode is, for example, ITO.
  • Step 502 applying the same voltage signal on the pixel electrode on the TFT substrate and the pixel electrode on the CF substrate, and applying the same voltage signal on the common electrode on the TFT substrate and the common electrode on the CF substrate.
  • the pixel electrode 43 on the TFT substrate 41 and the pixel electrode 43 on the CF substrate 42 can be electrically connected to each other to apply the same voltage signal thereto.
  • the common electrode 44 on the TFT substrate 41 and the common electrode 44 on the CF substrate 42 can be electrically connected to each other to apply the same voltage signal thereto.
  • the way of conducting the electrodes may be: placing a spacer made of a conductive material between the electrodes to be turned on for electrical connection.
  • Embodiments of the present invention also provide a liquid crystal display device including an optical device such as a polarizer and a liquid crystal panel as shown in FIG. 4a or 4b.
  • an embodiment of the present invention further provides a display device including a backlight and a liquid crystal display device, wherein the liquid crystal display device includes a liquid crystal panel as shown in FIG. 4a or 4b.
  • the display device may be a display device in a device having a display function such as a mobile phone, a notebook computer, a tablet computer, a liquid crystal display, a monitor, or the like.
  • Fig. 7 is a view showing the effect of a liquid crystal display device according to a conventional art and a liquid crystal display device according to an embodiment of the present invention.
  • the left side is a schematic diagram of the operation of the liquid crystal display device according to the conventional technology. Since the two electrodes are driven by the conventional technology, the electric field intensity above the liquid crystal cell is weak, and the liquid crystal deflection speed is slow, thereby affecting the response time. At the same time, the proportion of the transverse electric field is low, which is not conducive to the in-plane deflection of the liquid crystal.
  • the right side of FIG. 7 is a schematic diagram of the operation of the liquid crystal display device according to the embodiment of the present invention.
  • the liquid crystal display has a faster response time, and The driving voltage applied to the pixel electrode can be greatly reduced, and the viewing angle is widened, which provides conditions for timing color control, and can be applied to the blue phase technology in the future.
  • FIG. 8 is a comparison effect diagram of transmittance and voltage relationship of a liquid crystal panel of an AD-SDS mode according to a conventional art and an embodiment of the present invention.
  • the abscissa is the voltage
  • the ordinate is the transmittance
  • the solid line is the curve obtained by applying the embodiment of the present invention
  • the broken line is the curve obtained without applying the embodiment of the present invention.
  • 9 is a view showing a contrast effect of a transmittance and a voltage relationship of a liquid crystal panel according to a conventional art and an IPS according to an embodiment of the present invention. As shown in FIG.
  • the abscissa is a voltage
  • the ordinate is a transmittance
  • the solid line is a curve obtained by applying the embodiment of the present invention
  • the broken line is obtained by not applying the embodiment of the present invention. Curve.

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

提供了一种液晶面板。该液晶面板包括：薄膜晶体管（TFT）基板（41）、彩膜（CF）基板（42）、填充在TFT基板（41）和CF基板（42）之间的液晶层、像素电极（43）和公共电极（44）。所述像素电极（43）和所述公共电极（44）二者以相同的方式分别设置在所述TFT基板（41）和所述CF基板（42）上，所述TFT基板（41）上的像素电极（43）与所述CF基板（42）上的像素电极（43）相对并被施加相同的电压信号，所述TFT基板（41）上的公共电极（44）与所述CF基板（42）上的公共电极（44）相对并被施加相同的电压信号。还提供了上述液晶面板的制备方法以及包括上述液晶面板的液晶显示装置。

Description

液晶面板及其制备方法、 液晶显示装置 技术领域
本发明的实施例涉及一种液晶面板及其制备方法、 液晶显示装置。 背景技术
平面转换（In-Plane Switching, IPS )技术的优势在于可视角度宽、 响应速 度快， 色彩还原准确， 由此获得的产品属液晶面板里的高端产品。 采用 IPS技 术的面板最大的特点在于： 公共电极和像素电极都在同一个平面上， 施加电压 之后在两者之间形成水平电场。 而在传统液晶模式中， 公共电极和像素电极是 在上下两个平面， 两者之间形成垂直电场。 IPS 技术把液晶分子的排列方式进 行了优化， 采取水平排列方式； 当遇到外力时， 分子结构向下稍微下陷， 但是 液晶分子整体还呈水平状。在遇到外力时， 其液晶分子结构坚固性和稳定性好， 所以不会产生画面失真和影响画面色彩， 可以最大程度的保护画面效果不被损 害。 因此， 通常将采用 IPS技术的面板称为采用硬屏技术的液晶面板。
进一步的， 高级超维场开关技术 ( Advanced- Super Dimensional Switching; 简称： AD-SDS )是液晶界为解决大尺寸、 高清晰度桌面显示器和液晶电视应 用而开发的广视角技术， 也是硬屏技术的一种。 该技术通过同一平面内像素电 极或公共电极边缘所产生的平行电场以及在不同平面内的像素电极与公共电极 间产生的纵向电场形成多维电场， 使液晶盒内像素电极和公共电极之间、 像素 电极或公共电极正上方所有取向液晶分子都能够产生旋转转换， 从而提高了平 面取向系液晶材料的工作效率并增大了透光效率。 高级超维场开关技术可以提 高 TFT-LCD 画面品质， 具有高透过率、 宽视角、 高开口率、 低色差、 低响应 时间、 无挤压水波纹（ push Mura ) 波纹等优点。
AD-SDS技术克服了常规 IPS技术透光效率低的问题， 在宽视角的前提下， 实现高的透光效率。但是， 无论是釆用 IPS技术还是 AD-SDS技术的液晶面板， 其响应时间仍然不够理想， 并且视角宽度也还有提升空间。 发明内容
根据本发明的一个实施例， 提供一种液晶面板。 该液晶面板包括： 薄膜晶 体管 （ TFT )基板、 彩膜（ CF )基板、 填充在 TFT基板和 CF基板之间的液晶 层、 用于驱动液晶的像素电极以及公共电极。 所述像素电极和所述公共电极二 者以相同的方式分别设置在所述 TFT基板和所述 CF基板上， 所述 TFT基板上 的像素电极与所述 CF基板上的像素电极相对并被施加相同的电压信号， 所述 TFT基板上的公共电极与所述 CF基板上的公共电极相对并被施加相同的电压 信号。
根据本发明的另一个实施例， 提供一种液晶显示装置。 该液晶显示装置包 括偏光片以及如上所述的液晶面板。
根据本发明的再一个实施例， 提供一种显示设备。 该显示设备包括背光源 和液晶显示装置。 其中所述液晶显示装置中包括如上所述的液晶面板。
根据本发明的再一个实施例， 提供一种液晶面板的制作方法。 该液晶面板 包括： 薄膜晶体管 （TFT )基板、 彩膜 （CF )基板、 填充在 TFT基板和 CF基 板之间的液晶层、 像素电极以及公共电极。 该方法包括： 将所述像素电极和所 述公共电极二者以相同的方式分别设置在所述 TFT基板和所述 CF基板上， 以 使得所述 TFT基板上的像素电极与所述 CF基板上的像素电极相对并且所述 TFT基板上的公共电极与所述 CF基板上的公共电极相对； 以及在所述 TFT基 板上的像素电极上与所述 CF基板上的像素电极上施加相同的信号电压并且在 所述 TFT基板上的公共电极上与所述 CF基板上的公共电极上施加相同的信号 电压。
根据本发明实施例所提供的液晶面板， 在薄膜晶体管 （TFT )基板和彩膜
( CF )基板上设置相对的成对的像素电极和公共电极， 并且将所述两个基板上 相同的电极导通。 使液晶面板具有更快的响应时间， 并可以在很大程度上降低 施加在电极上的驱动电压， 扩大了视角宽度， 为时序彩色控制提供了条件， 进 一步还可以应用到蓝相技术上。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些 实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动性的前提下， 还 可以根据这些附图获得其他的附图。 1为 IPS模式的液晶面板的结构示意图；
2为 AD-SDS模式的一种液晶面板的结构示意图；
3为 AD-SDS模式的另一种液晶面板的结构示意图；
4a为根据本发明实施例的 IPS模式的液晶面板的结构示意图；
4b为根据本发明实施例的 AD-SDS模式的液晶面板的结构示意图； 5为根据本发明实施例的 IPS模式的液晶面板的工作原理图；
6为根据本发明实施例的液晶面板的制作方法的流程示意图；
7 为传统的液晶面板与根据本发明实施例的液晶面板的工作效果对比
8为根据传统技术与根据本发明实施例的 AD-SDS模式的液晶面板的透 光度和电压关系的对比效果图；
图 9为根据传统技术与根据本发明实施例的 IPS的液晶面板的透光度和电 压关系对比效果图。 具体实施方式
为了更好的理解本发明， 首先介绍一下采用 IPS技术（IPS模式） 以及采 用 AD-SDS技术（AD-SDS模式） 的液晶面板的结构。 图 1为 IPS模式的液晶 面板的结构示意图。 如图 1所示， 该 IPS液晶面板包括阵列 （了？丁）基板1、 彩 膜基板（ CF )2以及填充在彩膜基板和阵列基板之间的液晶层（ LC )。像素（ Pixel ) 电极 3和公共 ( Com ) 电极 4均设置在 TFT基板上， 它们在电绝缘的状态下在 同一平面上交替排列。
图 2为 AD-SDS模式的一种液晶面板结构示意图。 如图 2所示， 该液晶面 板包括阵列 （ TFT )基板 1、 彩膜基板（ CF ) 2以及填充在彩膜基板和阵列基板 之间的液晶层（ LC ) 。 Com电极 4设置在 TFT基板上， 并且在 Com电极 4上 覆盖绝缘层 5 , 在绝缘层 5上设置像素电极 3。 Com电极 4不具有狭缝状开口， 而像素电极 3具有狭缝状开口。
图 3为 AD-SDS模式的另一种液晶面板的示意图。 如图 3所示， 该液晶面 板包括阵列 （ TFT )基板 1、 彩膜基板（ CF ) 2以及填充在彩膜基板和阵列基板 之间的液晶层 （LC ) 。 像素电极 3设置在 TFT基板 1上， 并且在像素电极 3 上覆盖绝缘层 5 , 在绝缘层 5上设置 Com电极 4。 像素电极 3不具有狭缝状开 口， 而 Com电极 4具有狭缝状开口。
下面结合附图对本发明的具体实施例进行进一步详细阐述。 显然， 下面所 描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基于本发明 中的实施例， 本领域普通技术人员在没有做出创造性劳动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。
图 4a为根据本发明实施例的 IPS模式的液晶面板的结构示意图， 图 5为根 据本发明实施例的 IPS模式的液晶面板的工作原理图。 如图 4a所示， 该液晶面 板包括： TFT基板 41、 CF基板 42、 像素电极 43和公共电极 44。
在 TFT基板 41上， 像素电极 43和公共电极 44在电绝缘的状态下在同一 平面上交替排列。 在 CF基板 42上， 以与 TFT基板 41相同的方式设置像素电 极 43和公共电极 44。 TFT基板 41上的像素电极 43与 CF基板 42上的像素电 极 43彼此相对并被施加相同的电压信号 , TFT基板 41上的公共电极 44与 CF 基板 42上的公共电极 44彼此相对并被施加相同的电压信号。
可以通过蚀刻工艺在 TFT基板 41及 CF基板 42上形成上述像素电极 43 和公共电极 44。
在 IPS模式下， 上述像素电极 43和公共电极 44可以由金属材料制成。 可以使 TFT基板 41上的像素电极 43与 CF基板 42上的像素电极 43彼此 导通， 以便在它们上施加相同的电压信号。 相似地， 可以使 TFT基板 41上的 公共电极 44与 CF基板 42上的公共电极 44彼此导通， 以便在它们上施加相同 的电压信号。 此外， 可以通过导电材料制成的隔垫物来使阵列基板 41和 CF基 板 42上的相同电极导通。 例如， 可以在阵列基板 41上的像素电极 43与 CF基 板 42上的像素电极 41之间放置导电材料制成的隔垫物以使它们彼此导通。 例 如， 可以在阵列基板 41上的公共电极 44与 CF基板 42上的公共电极 44之间 放置导电材料制成的隔垫物以使它们彼此导通。
图 4b为根据本发明实施例的 AD-SDS模式的液晶面板的结构示意图。 如 图 4b所示 , 所述装置包括： TFT基板 41、 CF基板 42、 像素电极 43和公共电 极 44。
在 TFT基板 41上设置 Com电极 44 , 在 Com电极 44上覆盖绝缘层 45 , 在绝缘层 45上设置像素电极 43。 像素电极 43具有狭缝状开口。 在 CF基板 42 上， 以与 TFT基板 41相同的方式设置像素电极 43和公共电极 44。 TFT基板 41上的像素电极 43与 CF基板 42上的像素电极 43彼此相对并被施加相同的电 压信号， TFT基板 41上的公共电极 44与 CF基板 42上的公共电极 44彼此相 对并被施加相同的电压信号。
需要说明的是， 在上述结构中， 像素电极 43与公共电极 44的位置可以互 换。 在 TFT基板 41上设置像素电极 43 , 在像素电极 43上覆盖绝缘层 45 , 在 绝缘层 45上设置 Com电极 44。 Com电极 44具有狭缝状开口。 在 CF基板 42 上， 以与 TFT基板 41相同的方式设置像素电极 43和公共电极 44。 TFT基板 41上的像素电极 43与 CF基板 42上的像素电极 43彼此相对并被施加相同的电 压信号， TFT基板 41上的公共电极 44与 CF基板 42上的公共电极 44彼此相 对并施加相同的电压信号。
可以通过蚀刻工艺在 TFT基板 41及 CF基板 42上形成上述像素电极 43 和公共电极 44。
在 AD-SDS模式下， 上述像素电极 43和公共电极 44可以由透明电极例如 铟锡氧化物 （ITO ) 形成。
可以使 TFT基板 41上的像素电极 43与 CF基板 42上的像素电极 43彼此 导通， 以便在它们上施加相同的电压信号。 相似地， 可以使 TFT基板 41上的 公共电极 44与 CF基板 42上的公共电极 44彼此导通， 以便在它们上施加相同 的电压信号。 此外， 可以通过导电材料制成的隔垫物来使阵列基板 41和 CF基 板 42上的相同电极导通。 例如， 可以在阵列基板 41上的像素电极 43与 CF基 板 42上的像素电极 41之间放置导电材料制成的隔垫物以使它们彼此导通。 例 如， 可以在阵列基板 41上的公共电极 44与 CF基板 42上的公共电极 44之间 放置导电材料制成的隔垫物以使它们彼此导通。
图 6为根据本发明实施例的液晶面板的制作方法的流程示意图。 所述方法 可以用于制作 IPS模式或 AD-SDS模式的液晶面板。 如图 6所示， 该实施例的 方法包括以下步骤：
步骤 501 , 在 TFT基板和 CF基板上以相同的方式设置像素电极和公共电 极， TFT基板上的像素电极与 CF基板上的像素电极相对， TFT基板上的公共 电极和 CF基板上的公共电极相对。
例如， 通过蚀刻等图案化工艺将像素电极和公共电极分别形成在 TFT基板 和 CF基板上。 在 IPS模式下， 电极的材质例如为金属； 在 AD-SDS模式下， 电极的材质为例如 ITO。
步骤 502, 在 TFT基板上的像素电极与 CF基板上的像素电极上施加相同 的电压信号， 并在 TFT基板上的公共电极与 CF基板上的公共电极上施加相同 的电压信号。
可以使 TFT基板 41上的像素电极 43与 CF基板 42上的像素电极 43彼此 导通， 以便在它们上施加相同的电压信号。 相似地， 可以使 TFT基板 41上的 公共电极 44与 CF基板 42上的公共电极 44彼此导通， 以便在它们上施加相同 的电压信号。
所述导通电极的方式可以为： 将导电材料制成的隔垫物放置在需要导通的 电极之间， 以进行电连接。
本发明实施例还提供一种液晶显示装置， 该液晶显示装置中包括偏光片等 光学器件和如图 4a或 4b所示的液晶面板。
进一步地， 本发明实施例还提供一种显示设备， 该显示设备包括背光源和 液晶显示装置， 所述液晶显示装置中包括如图 4a或 4b所示的液晶面板。 这里， 所述显示设备， 可以为手机、 笔记本电脑、 平板电脑、 液晶显示器、 监视器等 具有显示功能的装置中的显示设备。
图 7为根据传统技术的液晶显示装置与根据本发明实施例的液晶显示装置 的效果对比图。 如图 7所示， 左侧为根据传统技术的液晶显示装置的工作示意 图， 由于传统技术中， 采取两个电极驱动， 液晶盒上方的电场强度较弱， 液晶 偏转速度慢， 从而影响了响应时间， 同时横向电场比例较低， 不利于液晶的面 内偏转。 图 7的右侧为才艮据本发明实施例的液晶显示装置的工作示意图， 由于 在 TFT基板及 CF基板上设置了相对、 并且相同的电极， 使液晶显示屏具有更 快的响应时间， 并可以在很大程度上降低施加在像素电极上的驱动电压， 扩大 了视角宽度， 为时序彩色控制提供了条件， 未来可以应用到蓝相技术上。
图 8为根据传统技术与根据本发明实施例的 AD-SDS模式的液晶面板的透 光度和电压关系的对比效果图。 如图 8所示， 横坐标为电压， 纵坐标为透光度， 实线为应用了本发明实施例所得到的曲线， 虚线为没有应用本发明实施例所得 到的曲线。 图 9为根据传统技术与根据本发明实施例的 IPS的液晶面板的透光 度和电压关系对比效果图。 如图 9所示， 横坐标为电压， 纵坐标为透光度， 实 线为应用了本发明实施例所得到的曲线， 虚线为没有应用本发明实施例所得到 的曲线。 由上述两图可以看出， 应用了本发明实施例之后， 能够在相对较低的 电压下， 获得更好的透光度。
以上所述， 仅为本发明的示范性实施例而已， 并非用于限定本发明的保护 范围。

Claims

权利要求书
1、 一种液晶面板， 包括： 薄膜晶体管（TFT )基板、 彩膜（CF )基板、 填 充在 TFT基板和 CF基板之间的液晶层、 用于驱动液晶的像素电极以及公共电 极，
其中所述像素电极和所述公共电极二者以相同的方式分别设置在所述 TFT 基板和所述 CF基板上， 所述 TFT基板上的像素电极与所述 CF基板上的像素 电极相对并被施加相同的电压信号， 所述 TFT基板上的公共电极与所述 CF基 板上的公共电极相对并被施加相同的电压信号。
2、 根据权利要求 1所述的液晶面板， 其中， 所述 TFT基板上的像素电极 与公共电极在彼此绝缘的状态下相互交替地设置在所述 TFT基板上的同一平面 内， 并且所述 CF基板上的像素电极与公共电极在彼此绝缘的状态下相互交替 地设置在所述 CF基板上的同一平面内。
3、根据权利要求 2所述的液晶面板， 其中所述像素电极和所述公共电极的 材质为金属。
4、 根据权利要求 2所述的液晶面板， 其中通过使 TFT基板上的像素电极 与所述 CF基板上的像素电极导通而在它们上施加相同的电压信号， 或者通过 使所述 TFT基板上的公共电极与所述 CF基板上的公共电极导通而在它们上施 加相同的电压信号。
5、 根据权利要求 4所述的液晶面板， 还包括导电隔垫物， 该导电隔垫物放 置在所述彩膜基板上的像素电极与所述 TFT基板上的像素电极之间以使它们导 通。
6、 根据权利要求 4所述的液晶面板， 还包括导电隔垫物， 该另一导电隔垫 物放置在所述彩膜基板上的公共电极与所述 TFT基板上的公共电极之间以使它 们导通。
7、 根据权利要求 1所述的液晶面板， 还包括：
第一绝缘层， 该第一绝缘层覆盖所述 TFT基板上的公共电极， 所述 TFT 基板上的像素电极设置在该第一绝缘层上并具有狭缝状开口， 并且
第二绝缘层， 该第二绝缘层覆盖所述 CF基板上的公共电极， 所述 CF基板 上的像素电极设置在该第二绝缘层上并具有狭缝状开口。
8、根据权利要求 7所述的液晶面板， 其中所述像素电极和所述公共电极的 材质为透明材料。
9、 根据权利要求 7所述的液晶面板， 其中通过使 TFT基板上的像素电极 与所述 CF基板上的像素电极导通而在它们上施加相同的电压信号， 或者通过 使所述 TFT基板上的公共电极与所述 CF基板上的公共电极导通而在它们上施 加相同的电压信号。
10、 根据权利要求 9所述的液晶面板， 还包括导电隔垫物， 该导电隔垫物 放置在所述彩膜基板上的像素电极与所述 TFT基板上的像素电极之间以使它们 导通。
11、 根据权利要求 9所述的液晶面板， 还包括导电隔垫物， 该另一导电隔 垫物放置在所述彩膜基板上的公共电极与所述 TFT基板上的公共电极之间以使 它们导通。
12、 根据权利要求 1所述的液晶面板， 还包括：
第一绝缘层， 该第一绝缘层覆盖所述 TFT基板上的像素电极， 所述 TFT 基板上的公共电极设置在该第一绝缘层上并具有狭缝状开口， 并且
第二绝缘层， 该第二绝缘层覆盖所述 CF基板上的像素电极， 并且所述 CF 基板上的公共设置在该第二绝缘层上并具有狭缝状开口。
13、根据权利要求 12所述的液晶面板， 其中所述像素电极和所述公共电极 的材质为透明材料。
14、 根据权利要求 12所述的液晶面板， 其中通过使 TFT基板上的像素电 极与所述 CF基板上的像素电极导通而在它们上施加相同的电压信号， 或者通 过使所述 TFT基板上的公共电极与所述 CF基板上的公共电极导通而在它们上 施加相同的电压信号。
15、 根据权利要求 14所述的液晶面板， 还包括导电隔垫物， 该导电隔垫物 放置在所述彩膜基板上的像素电极与所述 TFT基板上的像素电极之间以使它们 导通。
16、 根据权利要求 14所述的液晶面板， 还包括另一导电隔垫物， 该另一导 电隔垫物放置在所述彩膜基板上的公共电极与所述 TFT基板上的公共电极之间 以使它们导通。
17、 一种液晶显示装置， 包括偏光片以及如权利要求 1所述的液晶面板。
18、 一种液晶面板的制备方法， 该液晶面板包括： 薄膜晶体管 （TFT )基 板、 彩膜（CF )基板、 填充在 TFT基板和 CF基板之间的液晶层、 像素电极以 及公共电极， 该方法包括：
将所述像素电极和所述公共电极二者以相同的方式分别设置在所述 TFT基 板和所述 CF基板上， 以使得所述 TFT基板上的像素电极与所述 CF基板上的 像素电极相对并且所述 TFT基板上的公共电极与所述 CF基板上的公共电极相 对；
在所述 TFT基板上的像素电极上与所述 CF基板上的像素电极上施加相同 的信号电压并且在所述 TFT基板上的公共电极上与所述 CF基板上的公共电极 上施加相同的信号电压。
19、 根据权利要求 18所述的方法， 其中， 将所述像素电极与公共电极通过 图案化工艺形成在所述 TFT基板和 CF基板上。
20、 根据权利要求 18所述的方法， 其中， 所述电极的材质为金属或 ITO。
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CN109270740A (zh) * 2018-11-12 2019-01-25 成都中电熊猫显示科技有限公司 液晶显示面板、显示装置及对向基板的制造方法
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CN111103735A (zh) * 2020-01-10 2020-05-05 Oppo广东移动通信有限公司 水平电场型的显示面板、电子设备
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