WO2013067875A1 - 液晶显示面板及液晶显示装置 - Google Patents

液晶显示面板及液晶显示装置 Download PDF

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Publication number
WO2013067875A1
WO2013067875A1 PCT/CN2012/082707 CN2012082707W WO2013067875A1 WO 2013067875 A1 WO2013067875 A1 WO 2013067875A1 CN 2012082707 W CN2012082707 W CN 2012082707W WO 2013067875 A1 WO2013067875 A1 WO 2013067875A1
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WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
display panel
conductive structure
panel according
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PCT/CN2012/082707
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English (en)
French (fr)
Inventor
张培林
柳在健
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京东方科技集团股份有限公司
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Priority to US13/704,794 priority Critical patent/US9069195B2/en
Publication of WO2013067875A1 publication Critical patent/WO2013067875A1/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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • 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
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • G02F1/136259—Repairing; Defects
    • G02F1/136272—Auxiliary lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation

Definitions

  • Liquid crystal display panel and liquid crystal display device Liquid crystal display panel and liquid crystal display device
  • Embodiments of the present invention relate to a liquid crystal display panel and a liquid crystal display device. Background technique
  • Thin film field effect transistor liquid crystal display Thin film Transistor-Liquid Crystal
  • TFT-LCD has been widely used in various electronic devices having display functions, including televisions, televisions, monitors, and portable electronic devices.
  • Major panel manufacturers are working hard to improve product performance, reduce energy consumption, increase viewing angles, and reduce response time.
  • the improvement of the residual image of the display panel is particularly important because it directly affects the quality of the display screen.
  • the afterimage is a phenomenon in which the image of the original image is retained when it is converted to another image after driving the specific stop image for a long time.
  • the afterimage can be divided into two types: area image sticking and line image sticking depending on the form and position.
  • the main cause of the afterimage is the residual charge, which includes the polarized charge generated inside the liquid crystal cell by the applied electric field and the impurity charge inside the liquid crystal cell.
  • a liquid crystal display panel comprises: a liquid crystal layer; a conductive structure surrounding the periphery of the liquid crystal layer; and a driving circuit connected to the conductive structure.
  • a liquid crystal display device includes the above liquid crystal display panel.
  • the liquid crystal display panel and the liquid crystal display device of the embodiment of the invention pass the driving circuit and the conductive structure An electric field is applied to the periphery of the panel so that the residual charge that originally accumulated in the pixel region moves toward the periphery of the panel and is led out.
  • the applied voltage is a periodic positive and negative electric field, both positive and negative charges can be moved to the periphery and derived, and finally the impurity charge inside the liquid crystal cell is reduced, thereby achieving the purpose of improving the afterimage, and the structure is simple.
  • FIG. 1 is a schematic structural view of a liquid crystal display panel according to an embodiment of the invention.
  • FIG. 2 is a schematic structural view of a driving circuit in a liquid crystal display panel according to an embodiment of the invention
  • FIG. 3 is a schematic view showing an electric field applied to a conductive structure in a liquid crystal display panel according to an embodiment of the invention
  • FIG. 4 is a schematic view showing a negative electric field applied to a conductive structure in a liquid crystal display panel according to an embodiment of the invention
  • Fig. 5 is a schematic view showing a positive electric field applied to a conductive structure in a liquid crystal display panel according to an embodiment of the present invention. detailed description
  • the afterimage is more likely to occur in the liquid crystal display panel of the horizontal electric field mode.
  • the electric field applied to the liquid crystal cell is a horizontal electric field generated by the pixel electrode and the common electrode provided on the TFT array substrate due to the pixel electrode and the common electrode
  • the distance between the two is smaller, so the electric field strength is larger than other vertical electric field structures, making the polarization charge and impurity charge in the liquid crystal cell easier.
  • Aggregation occurs under the action of an electric field, generating a parasitic electric field.
  • the voltage of the latter picture drives the liquid crystal molecules, the deflection of the liquid crystal molecules cannot be completely in place due to the existence of the parasitic electric field, so the image of the previous picture is retained, so that the afterimage is likely to occur.
  • the embodiment of the present invention can be applied to a liquid crystal display panel of a horizontal electric field mode such as an FFS type or an IPS type, and can also be applied to a liquid crystal display panel of a vertical electric field mode such as a VA type or an MVA type. .
  • a liquid crystal display panel according to an embodiment of the present invention will be described in detail below with reference to Figs.
  • a liquid crystal display panel according to an embodiment of the present invention includes: a counter substrate (not shown), an array substrate 1, and a liquid crystal layer filled between the counter substrate and the array substrate 1. Further, the liquid crystal display panel further includes: a conductive structure 2 surrounding the periphery of the liquid crystal layer and a driving circuit 3 connected to the conductive structure 2.
  • an electric field parallel to the panel is generated, thereby adsorbing residual charges inside the liquid crystal cell, so that residual charges originally accumulated in the liquid crystal cell are moved toward the periphery of the panel, and It leads to the liquid crystal cell, thereby achieving the purpose of improving the afterimage without affecting the display effect.
  • the opposite substrate (not shown) is, for example, a color film substrate or a glass substrate.
  • the array substrate 1 includes a plurality of gate lines Gn and a plurality of data lines Sn, 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 for controlling A pixel electrode in which liquid crystals are arranged.
  • the gate of the thin film transistor of each pixel is electrically connected or integrally formed with the corresponding gate line
  • the source is electrically connected or integrally formed with the corresponding data line
  • the drain is electrically connected or integrally formed with the corresponding pixel electrode.
  • the array substrate 1 may further include a common electrode.
  • the liquid crystal panel includes a display area DA and a peripheral area PA outside the display area DA.
  • the display area DA includes a plurality of pixel units arranged in a matrix for display of a picture.
  • the peripheral area PA does not include a pixel unit and is not used for display; for example, a sealant or the like is formed in the peripheral area PA for forming a liquid crystal cell.
  • the conductive structure 2 surrounding the periphery of the liquid crystal layer is, for example, located in the peripheral region PA.
  • the conductive structure 2 may be enclosed in a closed structure around the display area DA, or may be disposed only at certain positions, such as upper and lower opposite sides or left and right opposite sides of the liquid crystal panel, without being closed.
  • the material and method for forming the conductive structure 2 are not limited as long as the finally formed conductive structure has conductivity.
  • the conductive structure 2 may be disposed on the array substrate, on the opposite substrate, or on both the array substrate and the opposite substrate.
  • the conductive structure 2 is disposed on the array substrate 1 and is prepared simultaneously with other layers on the array substrate during the panel preparation process to simplify the preparation process.
  • the conductive structure 2 can be formed using a metal, a transparent conductive material such as indium tin oxide (ITO) or the like.
  • the electrically conductive structure 2 may be a frame sealant having electrical conductivity.
  • the conductive property of the sealant can be achieved by doping conductive particles in the sealant in the liquid crystal box process, and optionally using a conductive material to directly prepare a sealant having electrical conductivity.
  • the conductive particles contain at least one of Au balls and carbon fibers.
  • the drive circuit 3 can be prepared separately or together with a drive component such as a gate driver or a data driver.
  • the drive circuit 3 can also be located, for example, in the peripheral area PA.
  • the drive circuit 3 includes a power supply circuit 3-1.
  • the power supply circuit 3-1 is connected to the conductive structure 2, and provides the conductive structure 2 with a DC voltage alternating periodically and negatively (as shown in FIG. 3), thereby introducing a periodic positive and negative alternating electric field through the conductive structure 2,
  • the positive and negative impurity charges can be moved to the periphery of the panel.
  • the drive circuit 3 further includes a switch circuit 3-2 having one end connected to the conductive structure 2 and the other end grounded. The switching circuit 3-2 is opened and closed in accordance with the positive and negative changes in the electric field applied to the conductive structure 2 to derive the corresponding impurity charges.
  • the switch circuit 3-2 may further include: a first crystal diode 3-2-1 having a positive electrode connected to the conductive structure 2 and a negative electrode grounded; the second crystal diode 3-2-2 having a negative electrode connected to the conductive structure 2 , the positive pole is grounded.
  • the residual charge inside the liquid crystal cell can be reduced, and the influence of the parasitic electric field on the liquid crystal deflection can be reduced, thereby improving the afterimage.
  • Embodiments of the present invention also provide a liquid crystal display device including the above liquid crystal display panel, and other necessary components constituting the liquid crystal display device well known to those skilled in the art (for example, a backlight mode) Blocks are not to be construed as limiting the apparatus of the present invention.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种液晶显示面板和具有该液晶显示面板的液晶显示装置。液晶显示面板包括液晶层；导电结构（2），围设在液晶层的周边；以及驱动电路（3），与导电结构（2）相连。

Description

液晶显示面板及液晶显示装置 技术领域
本发明的实施例涉及液晶显示面板及液晶显示装置。 背景技术
薄膜场效应晶体管液晶显示器 （Thin Film Transistor-Liquid Crystal
Display, TFT-LCD ) 已经被广泛应用在具有显示功能的各种电子设备中， 包 括电视（ Television, TV ), 监视器（ Monitor )、 以及便携式电子装置等。 各 大面板厂商都在努力提高产品的性能， 降低能耗，增大视角， 减小响应时间。 在提高 TFT-LCD产品性能的各方面努力中， 对于显示面板残像的改善尤为 重要， 因为它直接影响了显示画面的品质。
残像是指长时间驱动特定停止画像后， 变换为其他画像时留有原来画像 的图形的现象。 残像依据发生的形态和位置不同可以分为面残像（ area image sticking )和线残像（line image sticking ) 两种。 对残像机理的研究表明， 产 生残像的主要原因是残留电荷， 残留电荷包括外加电场作用下在液晶盒内部 产生的极化电荷以及在液晶盒内部的杂质电荷。 这些残留的电荷会影响液晶 在液晶盒顶部和底部的取向， 从而使得残像发生。 残像的发生严重影响液晶 显示器的显示效果。 另外， 线残像多发生在面板的周边区域， 这些区域由于 液晶分子容易和封框胶以及其他物质接触，发生污染，所以易产生杂质离子。 当离子聚集到一定程度后， 将在画面的边缘发生线残像。 发明内容
根据本发明的一个方面， 提供了一种液晶显示面板。 该液晶显示面板包 括： 液晶层； 导电结构， 围设在液晶层的周边； 以及驱动电路， 与所述导电 结构相连。
根据本发明的另一个方面， 提供一种液晶显示装置。 该液晶显示装置包 括上述液晶显示面板。
本发明实施例的液晶显示面板及液晶显示装置通过驱动电路和导电结构 对面板周边施加电场， 使得原来在像素区域发生聚集的残留电荷向面板周边 移动并导出。 此外， 由于施加的电压为周期性的正负电场， 所以可以使得正 负电荷均发生向周边的移动并导出， 最终使得液晶盒内部的杂质电荷减少， 从而达到改善残像的目的， 且结构简单。 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 简单地介绍， 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为依照本发明实施例的液晶显示面板的结构示意图；
图 2为依照本发明实施例的液晶显示面板中的驱动电路的结构示意图； 图 3为依照本发明实施例的液晶显示面板中在导电结构上施加的电场的 示意图；
图 4为依照本发明实施例的液晶显示面板中在导电结构上施加负电场时 的示意图；
图 5为依照本发明实施例的液晶显示面板中在导电结构上施加正电场时 的示意图。 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， 下面将结合本发 明实施例的附图，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。
相对于垂直电场模式的液晶显示面板， 残像更容易发生在水平电场模式 的液晶显示面板。 例如， 对于垂直电场模式的 FFS型 TFT-LCD来说， 对液 晶盒所施加的电场为水平电场，该电场由设置在 TFT阵列基板上的像素电极 和公共电极产生， 由于像素电极和公共电极之间的距离较小， 所以电场强度 较其他垂直电场结构要大， 从而使得液晶盒内极化电荷以及杂质电荷更容易 在电场作用下发生聚集， 产生寄生电场。 当后一个画面的电压驱动液晶分子 时， 由于寄生电场的存在， 使得液晶分子的偏转不能完全到位， 所以保留前 一个画面的图像， 从而容易发生残像。
尽管如此，需要说明的是，本发明实施例既可以应用于例如 FFS型、 IPS 型等的水平电场模式的液晶显示面板， 也可以应用于 VA型、 MVA型等的垂 直电场模式的液晶显示面板。
下面将结合图 1至 4详细描述根据本发明实施例的液晶显示面板。
图 1为依照本发明实施例的液晶显示面板的结构示意图。 如图 1所示， 依 照本发明实施例的液晶显示面板包括： 对向基板（未示出）、 阵列基板 1、 以 及填充在对向基板与阵列基板 1之间的液晶层。 此外， 液晶显示面板还包括： 围设在液晶层周边的导电结构 2和与导电结构 2相连的驱动电路 3。 通过由驱动 电路 3在该导电结构 2上施加电场， 从而产生平行于面板的电场， 进而吸附液 晶盒内部的残留电荷， 使得原本将在液晶盒内发生聚集的残留电荷向面板周 边移动， 并将其导出液晶盒， 从而达到改善残像的目的， 且不影响显示效果。
对向基板（未示出）例如为彩膜基板或玻璃基板。
阵列基板 1包括多条栅线 Gn和多条数据线 Sn,这些栅线和数据线彼此交叉 由此限定了排列为矩阵的像素单元， 每个像素单元包括作为开关元件的薄膜 晶体管和用于控制液晶的排列的像素电极。 例如， 每个像素的薄膜晶体管的 栅极与相应的栅线电连接或一体形成， 源极与相应的数据线电连接或一体形 成， 漏极与相应的像素电极电连接或一体形成。 此外， 对于例如 FFS型、 IPS 型等的水平电场模式的液晶显示面板， 阵列基板 1还可以包括公共电极。
该液晶面板包括显示区域 DA和在显示区域 DA之外的周边区域 PA。 显示 区域 DA包括多个排列为矩阵的像素单元， 用于画面的显示。 周边区域 PA不包 括像素单元， 不用于显示； 例如封框胶等形成在周边区域 PA之中， 用于形成 液晶盒。 围设在液晶层周边的导电结构 2例如位于周边区域 PA之中。导电结构 2可以围绕显示区域 DA成封闭结构， 或者仅设置在某些位置， 例如液晶面板 的上下相对侧或左右相对侧 , 而不去†闭。
对形成导电结构 2的材料和方法不作限定， 只要最终形成的导电结构具有 导电性即可。 导电结构 2可以设置在阵列基板上、对向基板上或者阵列基板和对向基板 二者上。 优选地， 导电结构 2设置于阵列基板 1上， 在面板制备工艺过程中， 与阵列基板上的其他层同时制备，以简化制备工艺。导电结构 2可以使用金属、 透明导电材料（例如氧化铟锡（ITO ) )等形成。
此外， 在一个示例中， 导电结构 2可为具有导电性能的封框胶。 封框胶的 导电性能可通过液晶对盒工艺中， 在封框胶中掺杂导电粒子来实现， 也可选 择导电材料直接制备具有导电性能的封框胶。 导电粒子至少包含 Au球、 碳纤 维中的至少之一。
驱动电路 3可以单独制备或者与比如栅极驱动器或数据驱动器等驱动部 件一起制备。 驱动电路 3例如也可以位于周边区域 PA之中。
如图 2所示，在本实施例的液晶显示面板中，驱动电路 3包括电源电路 3-1。 电源电路 3-1与导电结构 2相连， 为导电结构 2提供周期性正负交替变化的直流 电压（如图 3所示）， 由此通过导电结构 2引入周期性正负交替变换的电场， 以 使得正负杂质电荷均可向面板周边移动。此外，驱动电路 3还包括开关电路 3-2 , 一端与导电结构 2相连， 另一端接地。 开关电路 3-2根据施加于导电结构 2的电 场的正负变化而对应开闭， 以导出对应的杂质电荷。
优选地， 开关电路 3-2可进一步包括： 第一晶体二极管 3-2-1 , 其正极与导 电结构 2相连， 负极接地； 第二晶体二极管 3-2-2, 其负极与导电结构 2相连， 正极接地。
如图 4所示， 当导电结构 2上施加负电场时， 液晶盒内部的正电荷将向面 板周边聚集， 当累计的正电荷达到一定程度后， 连接在导电结构 2上的第一晶 体二极管 3-2-1导通，正电荷通过第一晶体二极管 3-2-1接入零电位的地。如图 5 所示，当导电结构 2上施加正电场时，液晶盒内部的负电荷将向面板周边聚集， 当累计的负电荷达到一定程度后，连接在导电结构 2上的第二晶体二极管 3-2-2 导通， 负电荷通过第一晶体二极管 3-2-2接入零电位的地。 从而， 通过调整施 加到导电结构 2上的电压， 可以减少液晶盒内部的残留电荷， 降低寄生电场对 液晶偏转的影响， 从而改善残像。
本发明的实施例还提供了一种包括上述液晶显示面板的液晶显示装置， 本领域技术人员所熟知的构成液晶显示装置的其他必要部件（例如， 背光模 块）在此不 #文赞述， 也不应作为对本发明装置的限制。
以上实施方式仅用于说明本发明， 而并非对本发明的限制， 有关技术领 域的普通技术人员， 在不脱离本发明的精神和范围的情况下， 还可以做出各 种变化和变型， 因此所有等同的技术方案也属于本发明的范畴， 本发明的专 利保护范围应由权利要求限定。

Claims

权利要求书
1、 一种液晶显示面板， 包括：
液晶层；
导电结构， 围设在所述液晶层的周边； 以及
驱动电路， 与所述导电结构相连。
2、 如权利要求 1所述的液晶显示面板， 其中所述驱动电路包括： 电源电路， 与所述导电结构相连并为所述导电结构提供直流电压； 开关电路， 一端与所述导电结构相连， 另一端接地。
3、 如权利要求 2所述的液晶显示面板， 其中所述电源电路为所述导电结 构提供周期性正负交替变化的直流电压。
4、 如权利要求 2所述的液晶显示面板， 其中所述开关电路包括： 第一晶体二极管， 正极与所述导电结构相连， 负极接地；
第二晶体二极管， 负极与所述导电结构相连， 正极接地。
5、 如权利要求 1所述的液晶显示面板， 其中所述液晶面板还包括阵列基 板和对向基板； 并且
其中所述导电结构设置在阵列基板上、 对向基板上或者阵列基板和对向 基板二者上。
6、 如权利要求 5所述的液晶显示面板， 其中所述导电结构设置在阵列基 板上。
7、 如权利要求 1所述的液晶显示面板， 其中所述液晶显示面板还包括封 框胶； 并且
其中该封框胶具有导电性以同时用作所述导电结构。
8、 如权利要求 7所述的液晶显示面板， 其中在所述封框胶中掺杂有导电 粒子以使所述封框胶具有导电性。
9、 如权利要求 8所述的液晶显示面板， 其中所述导电粒子至少包括 Au 球、 碳纤维中的至少之一。
10、 如权利要求 7所述的液晶显示面板， 其中所述封框胶直接由导电材 料形成。
11、 如权利要求 1 所述的液晶显示面板， 其中所述液晶面板包括显示区 域和在所述显示区域之外的周边区域； 并且
其中所述导电结构和 /或所述驱动电路设置在所述周边区域中。
12、 如权利要求 1所述的液晶显示面板， 其中所述导电结构是封闭的。
13、 如权利要求 1所述的液晶显示面板， 其中所述导电结构是不封闭的。
14、 如权利要求 1 所述的液晶显示面板， 其中所述液晶显示面板为水平 电场型液晶显示面板。
15、 一种液晶显示装置， 包括权利要求 1所述的液晶显示面板。
PCT/CN2012/082707 2011-11-11 2012-10-10 液晶显示面板及液晶显示装置 WO2013067875A1 (zh)

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