WO2017000325A1 - 蓝相液晶面板 - Google Patents

蓝相液晶面板 Download PDF

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Publication number
WO2017000325A1
WO2017000325A1 PCT/CN2015/084180 CN2015084180W WO2017000325A1 WO 2017000325 A1 WO2017000325 A1 WO 2017000325A1 CN 2015084180 W CN2015084180 W CN 2015084180W WO 2017000325 A1 WO2017000325 A1 WO 2017000325A1
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Prior art keywords
common electrode
liquid crystal
blue phase
phase liquid
common
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PCT/CN2015/084180
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English (en)
French (fr)
Inventor
唐岳军
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武汉华星光电技术有限公司
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Priority to US14/778,237 priority Critical patent/US9958740B2/en
Publication of WO2017000325A1 publication Critical patent/WO2017000325A1/zh

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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
    • 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
    • G02F1/133345—Insulating layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13793—Blue phases
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel

Definitions

  • the invention belongs to the technical field of liquid crystal display, and in particular relates to a blue phase liquid crystal panel.
  • blue phase liquid crystals are widely used in liquid crystal displays due to their excellent characteristics.
  • the optical isotropy of a blue phase liquid crystal makes the liquid crystal display to which it is applied has the advantages of high response speed, wide viewing angle, good dark state, and the like; and since the liquid crystal display using the blue phase liquid crystal does not need to provide an alignment layer necessary for other liquid crystal displays.
  • blue phase liquid crystals also face the problem of excessive driving voltage.
  • the industry generally adopts a method of improving the performance of blue phase liquid crystal materials or optimizing the electrode structure to reduce the driving voltage of blue phase liquid crystal.
  • the method of improving the performance of the blue phase liquid crystal material for example, a blue phase liquid crystal material for preparing a large Kerr constant, the process involving synthesizing the blue phase liquid crystal material is complicated, and thus the development cost is very expensive; and for the optimization of the electrode structure
  • the penetration depth of the lateral electric field generated by the parallel electrodes is limited, and thus a higher driving voltage is still required.
  • the present invention provides a novel blue phase liquid crystal panel.
  • a blue phase liquid crystal panel includes an upper substrate and a lower substrate disposed opposite to each other, and a blue phase liquid crystal disposed between the upper substrate and the lower substrate, and a surface of the upper substrate facing the blue phase liquid crystal is provided
  • a common electrode is disposed on a side of the lower substrate facing the blue phase liquid crystal with a second common electrode and a plurality of pixel electrodes. Wherein the pixel electrode extends toward the first common electrode to form a horizontal electric field between the upper substrate and the lower substrate.
  • the pixel electrode extends toward the first common electrode such that the pixel electrode has a length extending toward the first common electrode.
  • the pixel electrode and the first common electrode, the pixel electrode and the second common electrode An electric field is generated between each of them, and by setting the extension length of the pixel electrode, the electric field generated between the pixel electrode and the first common electrode, the pixel electrode and the second common electrode has more horizontal components in the liquid crystal layer, thereby
  • the liquid crystal layer has a higher electric field strength in the horizontal direction, and the higher electric field intensity causes liquid crystal molecules in the blue phase liquid crystal to have more shape variables in the horizontal direction, which reduces external driving of the blue phase liquid crystal Voltage.
  • the pixel electrode may extend from the second common electrode toward the first common electrode, or may extend from the lower substrate toward the first common electrode.
  • the horizontal direction in the liquid crystal layer referred to in the present invention means a direction parallel to the upper substrate and the lower substrate, and the horizontal electric field, that is, the electric field in the horizontal direction, is also referred to as a lateral electric field.
  • an end of the pixel electrode facing the first common electrode is provided with an insulating layer.
  • the insulating layer is used on the one hand to enable the pixel electrode to be maximally close to the first common electrode of the upper substrate, and on the other hand to prevent the extended pixel electrode from contacting the first common electrode, thereby protecting the pixel electrode. Avoid display problems after the upper substrate is pressed.
  • the first common electrode completely covers the upper substrate
  • the second common electrode completely covers the lower substrate
  • the pixel electrode extends insulatively from the second common electrode.
  • a third common electrode is disposed between adjacent two pixel electrodes, and the third common electrode extends from the second common electrode toward the first common electrode.
  • a horizontal electric field is formed between the third common electrode and the adjacent pixel electrode, which further enhances the electric field intensity in the horizontal direction in the liquid crystal layer.
  • the third common electrode and the second common electrode can be made into a unitary structure.
  • an end of the third common electrode facing the first common electrode is provided with an insulating layer.
  • the insulating layer can protect the third common electrode from display problems after the upper substrate is subjected to pressing.
  • the first common electrode completely covers the upper substrate
  • the second common electrode includes a plurality of second sub-common electrodes spaced apart on the lower substrate
  • the pixel electrodes are disposed on the adjacent two second sub-common electrodes of the lower substrate Between the areas.
  • the second common electrode is disposed as a plurality of second sub-common electrodes, each of which generates a horizontal electric field between the adjacent sub-pixel electrodes.
  • the second common electrode completely covers the lower substrate
  • the first common electrode includes a plurality of first sub-common electrodes spaced apart on the upper substrate
  • the pixel electrodes are insulated from the second common electrode toward the adjacent two A region between the first sub-common electrodes extends.
  • a third common electrode may be disposed between adjacent two pixel electrodes, and the third common electrode and the second common electrode may be formed into a unitary structure.
  • the first common electrode includes a plurality of first sub-common electrodes spaced apart on the upper substrate
  • the second common electrode includes a plurality of second sub-common electrodes spaced apart on the lower substrate, wherein the pixel electrode is disposed On the area of the lower substrate between the adjacent two second sub-common electrodes.
  • a horizontal electric field is formed between each of the first sub-common electrodes and the corresponding pixel electrodes, each of the second sub-common electrodes, and the corresponding pixel electrode.
  • the first sub-common electrode corresponds exactly to the second sub-common electrode. At this time, the field intensity distribution generated in the liquid crystal layer is more uniform.
  • the extension length of the pixel electrode is greater than or equal to half the pitch between the upper substrate and the lower substrate and smaller than the spacing between the upper substrate and the lower substrate. Reasonable setting of the extension length of the pixel electrode within the pitch range can effectively improve the horizontal field strength in the liquid crystal layer.
  • the present invention provides more electrode structures which can generate more horizontal field strength in the liquid crystal layer, thereby reducing the external driving voltage for driving the blue phase liquid crystal.
  • an insulating layer is provided on the extended end of the pixel electrode, thereby ensuring the safety of use of the liquid crystal display panel.
  • FIG. 1 is a schematic structural view of a first embodiment of a blue phase liquid crystal panel according to the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of a blue phase liquid crystal panel according to the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of a blue phase liquid crystal panel according to the present invention.
  • FIG. 4 is a schematic structural view of a fourth embodiment of a blue phase liquid crystal panel according to the present invention.
  • Figure 5 is a schematic structural view of a fifth embodiment of a blue phase liquid crystal panel according to the present invention.
  • Figure 6 is a schematic view showing the structure of a sixth embodiment of a blue phase liquid crystal panel according to the present invention.
  • Figure 7 is a schematic view showing the structure of a seventh embodiment of a blue phase liquid crystal panel according to the present invention.
  • the blue phase liquid crystal panel 100 includes an upper substrate 10 and a lower substrate 20 which are oppositely disposed, and a blue phase liquid crystal 30 disposed between the upper substrate 10 and the lower substrate 20, and a surface of the upper substrate 10 facing the blue phase liquid crystal is provided
  • a common electrode 11 and a second common electrode 21 and a plurality of pixel electrodes 22 are disposed on one surface of the lower substrate 20 facing the blue phase liquid crystal.
  • the pixel electrode 22 extends toward the first common electrode 11, so that a horizontal electric field as indicated by an arrow in FIG. 1 is formed between the upper substrate and the lower substrate.
  • the pixel electrode 22 extends toward the first common electrode 11 such that the pixel electrode 22 has a length extending toward the first common electrode 11. At this time, an electric field is generated between the pixel electrode 22 and the first common electrode 11, the pixel electrode 22, and the second common electrode 21.
  • the pixel electrode 22 and the first common electrode 11 are set by setting the extension length of the pixel electrode 22.
  • the electric field generated between the pixel electrode 22 and the second common electrode 21 has more horizontal components in the liquid crystal layer, so that the liquid crystal layer has a higher electric field strength in the horizontal direction, and the higher electric field strength makes the blue phase
  • the liquid crystal molecules in the liquid crystal have greater optical anisotropy in the horizontal direction, which reduces the external driving voltage of the blue phase liquid crystal.
  • the pixel electrode 22 may extend from the second common electrode 21 toward the first common electrode 11 or may extend from the lower substrate 20 toward the first common electrode 11.
  • the horizontal direction in the liquid crystal layer referred to in the present invention means a direction parallel to the upper substrate 10 and the lower substrate 20, and a horizontal electric field, that is, an electric field in the horizontal direction, is also referred to as a lateral electric field.
  • an insulating layer 221 is provided at one end of the pixel electrode 22 facing the first common electrode 11.
  • the insulating layer 221 is used on the one hand to enable the pixel electrode 22 to be maximally close to the upper substrate.
  • the first common electrode 11 of 10 serves to prevent the extended pixel electrode 22 from contacting the first common electrode 11, thereby protecting the pixel electrode 22 from occurring to prevent display problems after the upper substrate 10 is subjected to pressing.
  • the first common electrode 11 completely covers the upper substrate 10
  • the second common electrode 21 completely covers the lower substrate 20
  • the pixel electrode 22 extends insulatively from the second common electrode 21.
  • the fabrication process of the first common electrode 11 and the second common electrode 21 is simplified.
  • a third common electrode 23a is disposed between two adjacent pixel electrodes 22a, and the third common electrode 23a is disposed from the second common electrode 21a. It extends toward the first common electrode 11a.
  • a horizontal electric field is formed between the third common electrode 23a and the adjacent pixel electrode 22a, which further enhances the electric field intensity in the horizontal direction in the liquid crystal layer.
  • the third common electrode 23a and the second common electrode 21a can be made into a unitary structure.
  • an end of the third common electrode 23a facing the first common electrode 11a is provided with an insulating layer 231a.
  • the insulating layer 231a can protect the third common electrode 23a from the display problem after the upper substrate is subjected to pressing.
  • the first common electrode 11b completely covers the upper substrate 10b
  • the second common electrode includes a plurality of second sub-common electrodes 211b spaced apart on the lower substrate 20b
  • the pixel electrode 22b is disposed on the lower substrate 20b.
  • the second common electrode is disposed as a plurality of second sub-common electrodes 211b, and each of the second sub-common electrodes 211b generates a horizontal electric field between the adjacent pixel electrodes 22b.
  • the pixel electrode 22b may be directly disposed on the lower substrate 20b as shown in FIG. 3, or may be disposed on the lower substrate 20c through the insulating layer 221c as shown in FIG.
  • the second common electrode 21d completely covers the lower substrate 20d, and the first common electrode includes a plurality of first sub-common electrodes 111d spaced apart on the upper substrate 10d, and the pixel electrodes 22d are from the second The common electrode 21d extends in an insulating manner toward a region between adjacent two first sub-common electrodes 111d.
  • a third common electrode 23d may be disposed between the adjacent two pixel electrodes 22d, and the third common electrode 23d and the second common electrode 21d may be formed in a unitary structure.
  • the first common electrode includes a plurality of first sub-common electrodes 111e spaced apart on the upper substrate 10e
  • the second common electrode includes a plurality of second sub-commons spaced apart on the lower substrate 20e.
  • Electrode 211e wherein, the pixel electrode 22e is disposed on the lower substrate 20e in the adjacent two second sub-commons On the area between the common electrodes 211e.
  • a horizontal electric field is formed between the first sub-common electrode 111e and the pixel electrode 22e, the second sub-common electrode 211e, and the pixel electrode 22e.
  • the insulating layer 221e may be selectively disposed between the pixel electrode 22e and the lower substrate 20e.
  • the first sub-common electrode 111e and the second sub-common electrode 211e completely correspond. At this time, the field intensity distribution generated in the liquid crystal layer is more uniform.
  • the extending length of the pixel electrode 22 is greater than or equal to half the pitch between the upper substrate 10 and the lower substrate 20 and smaller than the spacing between the upper substrate 10 and the lower substrate 20.
  • a reasonable setting of the extension length of the pixel electrode 22 within the pitch range can effectively increase the horizontal field strength in the liquid crystal layer.
  • the length of the pixel electrode 22 may be preferably set to, for example, two-thirds, three-quarters, or the like of the pitch between the upper substrate 10 and the lower substrate 20.
  • the upper substrate 10 further includes a color resist layer and a black matrix layer, and the like
  • the lower substrate 20 further includes a semiconductor layer, a flat layer, and the like, which are all conventional designs, and are not specifically illustrated in the drawings.
  • the common electrodes and the pixel electrodes in the present invention may be disposed on the corresponding layers according to specific design requirements, and are not described herein again.

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

Abstract

一种蓝相液晶面板（100），包括相对设置的上基板（10）和下基板（20），以及设置在上基板（10）和下基板（20）之间的蓝相液晶（30），上基板（10）的朝向蓝相液晶（30）的一面上设置有第一公共电极（11），下基板（20）的朝向蓝相液晶（30）的一面上设置有第二公共电极（21）和多个像素电极（22）。其中，像素电极（22）朝向第一公共电极（11）延伸，从而在上基板（10）和下基板（20）之间形成水平电场。由于能够产生更高的水平场强，因而大大减小了蓝相液晶（30）的外部驱动电压。

Description

蓝相液晶面板
相关申请的交叉引用
本申请要求享有于2015年6月30日提交的名称为“蓝相液晶面板”的中国专利申请CN201510380874.9的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明属于液晶显示技术领域，具体涉及一种蓝相液晶面板。
背景技术
在现有的液晶显示技术领域中，蓝相液晶由于其自身的优良特性而被广泛应用于液晶显示器中。例如，蓝相液晶的光学各向同性使应用其的液晶显示器具有响应速度高、视角宽、暗态好等优点；同时由于应用蓝相液晶的液晶显示器无需设置其他液晶显示器中所必需的取向层，这便简化了液晶显示器的制造工艺，从而降低了生产成本；另外，由于应用蓝相液晶的显示器的液晶盒盒厚超过电场的穿透深度时，液晶盒盒厚的变化对透射率的影响可忽略不计，这种特性使其尤其适合制作大屏幕或单板液晶显示装置。
然而蓝相液晶也面临着驱动电压过大的问题，目前业界通常采用改进蓝相液晶材料的性能或者优化电极结构的方式来降低蓝相液晶的驱动电压。然而，对于采用改进蓝相液晶材料性能的方式，例如是制备大克尔常数的蓝相液晶材料，其涉及合成蓝相液晶材料的过程复杂，因此研发成本十分昂贵；而对于采用优化电极结构的方式来说，由于使用的IPS结构的驱动方式中，平行电极所产生的侧向电场的穿透深度有限，因而仍然需要较高的驱动电压。
针对上述技术存在的问题，在本领域中希望寻求一种蓝相液晶面板，其所具有的电极结构能够进一步增强液晶层内的侧向电场强度，从而达到降低蓝相液晶的驱动电压的目的。
发明内容
针对上述技术问题，本发明提供了一种新型蓝相液晶面板。
根据本发明提供的一种蓝相液晶面板，包括相对设置的上基板和下基板，以及设置在上基板和下基板之间的蓝相液晶，上基板的朝向蓝相液晶的一面上设置有第一公共电极，下基板的朝向蓝相液晶的一面上设置有第二公共电极和多个像素电极。其中，像素电极朝向第一公共电极延伸，从而在上基板和下基板之间形成水平电场。
本发明提供的蓝相液晶面板中，像素电极朝向第一公共电极延伸，使像素电极具有朝向第一公共电极延伸的长度，此时，像素电极与第一公共电极、像素电极与第二公共电极之间均产生电场，通过对像素电极的延伸长度进行设定，使像素电极与第一公共电极、像素电极与第二公共电极之间产生的电场具有在液晶层内更多的水平分量，从而使液晶层内在水平方向上具有更高的电场强度，该更高的电场强度使蓝相液晶内的液晶分子在水平方向上具有更多的形变量，这便减小了蓝相液晶的外部驱动电压。值得注意的是，像素电极可以是从第二公共电极上朝向第一公共电极延伸，也可以是从下基板上朝向第一公共电极延伸。另外，本发明所指的液晶层内的水平方向是指平行于上基板和下基板的方向，水平电场即在该水平方向上的电场，也称为侧向电场。
在一些实施方案中，像素电极的朝向第一公共电极的一端设置有绝缘层。该绝缘层一方面用于使像素电极能够最大限度地靠近上基板的第一公共电极，另一方面用于避免延伸的像素电极与第一公共电极接触，从而对对像素电极起保护作用，以避免上基板遭受按压后出现显示问题。
在一些实施方案中，第一公共电极完全覆盖上基板，第二公共电极完全覆盖下基板，像素电极从第二公共电极中绝缘式地延伸出来。该设置中由于第一公共电极和第二公共电极完全覆盖在相应的基板上，从而简化了第一公共电极和第二公共电极的制作工艺。
在一些实施方案中，相邻两个像素电极之间设置有第三公共电极，第三公共电极从第二公共电极中朝向第一公共电极延伸。该第三公共电极与相邻的像素电极之间均形成水平电场，进一步增强了液晶层内水平方向上的电场强度。优选地，该方案中可将第三公共电极与第二公共电极制成一体式结构。
在一些实施方案中，第三公共电极的朝向第一公共电极的一端设置有绝缘层。该绝缘层可对第三公共电极起保护作用，以避免上基板遭受按压后出现显示问题。
在一些实施方案中，第一公共电极完全覆盖上基板，第二公共电极包括多个间隔设置在下基板上的第二子公共电极，像素电极设置在下基板的处于相邻两个第二子公共电极之间的区域上。将第二公共电极设置成多个第二子公共电极，每个第二子公共电极均与相邻的像素电极之间产生水平电场。
在一些实施方案中，第二公共电极完全覆盖下基板，第一公共电极包括多个间隔设置在上基板上的第一子公共电极，像素电极从第二公共电极中绝缘式地朝向相邻两个第一子公共电极之间的区域延伸。在该方案中，相邻的两个像素电极之间还可设置第三公共电极，该第三公共电极与第二公共电极可制成一体式结构。
在一些实施方案中，第一公共电极包括多个间隔设置在上基板上的第一子公共电极，第二公共电极包括多个间隔设置在下基板上的第二子公共电极，其中，像素电极设置在下基板的处于相邻两个第二子公共电极之间的区域上。该方案中各个第一子公共电极与对应的像素电极、各个第二子公共电极与相应的像素电极之间均形成水平电场。
在一些实施方案中，第一子公共电极与第二子公共电极完全对应。此时在液晶层内产生的场强分布更均匀。
在一些实施方案中，像素电极的延伸长度大于等于上基板与下基板之间的间距的一半并且小于上基板与下基板之间的间距。在该间距范围内对像素电极的延伸长度进行合理的设置，可有效提高液晶层内的水平场强。
与现有技术相比，本发明提供了更多的电极结构，这些电极结构均能使液晶层内产生更多的水平场强，从而降低了用于驱动蓝相液晶的外部驱动电压。另外，在像素电极的延伸端设置绝缘层，从而保证了液晶显示面板的使用安全。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1是根据本发明的蓝相液晶面板的第一实施例的结构示意图；
图2是根据本发明的蓝相液晶面板的第二实施例的结构示意图；
图3是根据本发明的蓝相液晶面板的第三实施例的结构示意图；
图4是根据本发明的蓝相液晶面板的第四实施例的结构示意图；
图5是根据本发明的蓝相液晶面板的第五实施例的结构示意图；
图6是根据本发明的蓝相液晶面板的第六实施例的结构示意图；
图7是根据本发明的蓝相液晶面板的第七实施例的结构示意图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明作进一步说明。
这里所介绍的细节是示例性的，并仅用来对本发明的实施例进行例证性讨论，它们的存在是为了提供被认为是对本发明的原理和概念方面的最有用和最易理解的描述。关于这一点，这里并没有试图对本发明的结构细节作超出于基本理解本发明所需的程度的介绍，本领域的技术人员通过说明书及其附图可以清楚地理解如何在实践中实施本发明的几种形式。
图1显示了根据本发明提供的一种蓝相液晶面板100的第一实施例的结构示意图。该蓝相液晶面板100包括相对设置的上基板10和下基板20，以及设置在上基板10和下基板20之间的蓝相液晶30，上基板10的朝向蓝相液晶的一面上设置有第一公共电极11，下基板20的朝向蓝相液晶的一面上设置有第二公共电极21和多个像素电极22。其中，像素电极22朝向第一公共电极11延伸，从而在上基板和下基板之间形成如图1中箭头所示的水平电场。
本发明提供的蓝相液晶面板100中，像素电极22朝向第一公共电极11延伸，使像素电极22具有朝向第一公共电极11延伸的长度。此时，像素电极22与第一公共电极11、像素电极22与第二公共电极21之间均产生电场，通过对像素电极22的延伸长度进行设定，使像素电极22与第一公共电极11、像素电极22与第二公共电极21之间产生的电场具有在液晶层内更多的水平分量，从而使液晶层内在水平方向上具有更高的电场强度，该更高的电场强度使蓝相液晶内的液晶分子在水平方向上具有更大的光学异向性，这便减小了蓝相液晶的外部驱动电压。值得注意的是，像素电极22可以是从第二公共电极21上朝向第一公共电极11延伸，也可以是从下基板20上朝向第一公共电极11延伸。另外，本发明所指的液晶层内的水平方向是指平行于上基板10和下基板20的方向，水平电场即在该水平方向上的电场，也称为侧向电场。
如图1所示的实施例中，像素电极22的朝向第一公共电极11的一端设置有绝缘层221。该绝缘层221一方面用于使像素电极22能够最大限度地靠近上基板 10的第一公共电极11，另一方面用于避免延伸的像素电极22与第一公共电极11接触，从而对对像素电极22起保护作用，以避免上基板10遭受按压后出现显示问题。
优选地，如图1所示，第一公共电极11完全覆盖上基板10，第二公共电极21完全覆盖下基板20，像素电极22从第二公共电极21中绝缘式地延伸出来。该设置中由于第一公共电极11和第二公共电极21完全覆盖在相应的基板上，从而简化了第一公共电极11和第二公共电极21的制作工艺。
在如图2所示的实施例中，与实施例一的不同之处在于，相邻两个像素电极22a之间设置了第三公共电极23a，第三公共电极23a从第二公共电极21a中朝向第一公共电极11a延伸。该第三公共电极23a与相邻的像素电极22a之间均形成水平的电场，进一步增强了液晶层内水平方向上的电场强度。优选地，该方案中可将第三公共电极23a与第二公共电极21a制成一体式结构。
优选地，第三公共电极23a的朝向第一公共电极11a的一端设置有绝缘层231a。该绝缘层231a可对第三公共电极23a起保护作用，以避免上基板遭受按压后出现显示问题。
在如图3所示的实施例中，第一公共电极11b完全覆盖上基板10b，第二公共电极包括多个间隔设置在下基板20b上的第二子公共电极211b，像素电极22b设置在下基板20b的处于相邻两个第二子公共电极211b之间的区域上。将第二公共电极设置成多个第二子公共电极211b，每个第二子公共电极211b均与相邻的像素电极22b之间产生水平电场。可以理解的是，像素电极22b可以直接设置在如图3所示的下基板20b上，也可以如图4所示，通过绝缘层221c设置在的下基板20c上。
在如图5所示的实施例中，第二公共电极21d完全覆盖下基板20d，第一公共电极包括多个间隔设置在上基板10d上的第一子公共电极111d，像素电极22d从第二公共电极21d中绝缘式地朝向相邻两个第一子公共电极111d之间的区域延伸。优选地，如图6所示，相邻的两个像素电极22d之间还可设置第三公共电极23d，该第三公共电极23d与第二公共电极21d可制成一体式结构。
如图7所示的实施例中，第一公共电极包括多个间隔设置在上基板10e上的第一子公共电极111e，第二公共电极包括多个间隔设置在下基板20e上的第二子公共电极211e。其中，像素电极22e设置在下基板20e的处于相邻两个第二子公 共电极211e之间的区域上。该方案中第一子公共电极111e与像素电极22e、第二子公共电极211e与像素电极22e之间均形成水平电场。在该实施方案中，像素电极22e与下基板20e之间可选择性设置绝缘层221e。优选地，第一子公共电极111e与第二子公共电极211e完全对应。此时在液晶层内产生的场强分布更均匀。
根据本发明，以图1所示的实施例为例，像素电极22的延伸长度大于等于上基板10与下基板20之间的间距的一半并且小于上基板10与下基板20之间的间距。在该间距范围内对像素电极22的延伸长度进行合理的设置，可有效提高液晶层内的水平场强。其中，像素电极22的长度例如可以优选设置成上基板10与下基板20之间的间距的三分之二、四分之三等。
在本发明中，可以理解的是，上基板10还包括色阻层和黑矩阵层等，下基板20还包括半导体层以及平坦层等，这些均属于常规设计，在图中并未具体示出，而本发明中的各公共电极和像素电极可根据具体的设计需要设置在相应的层上，这里也不再赘述。
应注意的是，前面所述的例子仅以解释为目的，而不能认为是限制了本发明。虽然已经根据示例性实施例对本发明进行了描述，然而应当理解，这里使用的是描述性和说明性的语言，而不是限制性的语言。在当前所述的和修改的所附权利要求的范围内，在不脱离本发明的范围和精神的范围中，可以对本发明进行改变。尽管这里已经根据特定的方式、材料和实施例对本发明进行了描述，但本发明并不仅限于这里公开的细节；相反，本发明可扩展到例如在所附权利要求的范围内的所有等同功能的结构、方法和应用。

Claims (18)

  1. 一种蓝相液晶面板，包括相对设置的上基板和下基板，以及设置在所述上基板和所述下基板之间的蓝相液晶，所述上基板的朝向所述蓝相液晶的一面上设置有第一公共电极，所述下基板的朝向所述蓝相液晶的一面上设置有第二公共电极和多个像素电极，
    其中，所述像素电极朝向所述第一公共电极延伸，从而在所述上基板和下基板之间形成水平电场。
  2. 根据权利要求1所述的蓝相液晶面板，其中，所述像素电极的朝向所述第一公共电极的一端设置有绝缘层。
  3. 根据权利要求1所述的蓝相液晶面板，其中，所述第一公共电极完全覆盖所述上基板，所述第二公共电极完全覆盖所述下基板，所述像素电极从所述第二公共电极中绝缘式地延伸出来。
  4. 根据权利要求3所述的蓝相液晶面板，其中，相邻两个所述像素电极之间设置有第三公共电极，所述第三公共电极从所述第二公共电极中朝向所述第一公共电极延伸。
  5. 根据权利要求4所述的蓝相液晶面板，其中，所述第三公共电极的朝向所述第一公共电极的一端设置有绝缘层。
  6. 根据权利要求2所述的蓝相液晶面板，其中，所述第一公共电极完全覆盖所述上基板，所述第二公共电极完全覆盖所述下基板，所述像素电极从所述第二公共电极中绝缘式地延伸出来。
  7. 根据权利要求6所述的蓝相液晶面板，其中，相邻两个所述像素电极之间设置有第三公共电极，所述第三公共电极从所述第二公共电极中朝向所述第一公共电极延伸。
  8. 根据权利要求7所述的蓝相液晶面板，其中，所述第三公共电极的朝向所述第一公共电极的一端设置有绝缘层。
  9. 根据权利要求1所述的蓝相液晶面板，其中，所述第一公共电极完全覆盖所述上基板，所述第二公共电极包括多个间隔设置在所述下基板上的第二子公共电极，所述像素电极设置在所述下基板的处于相邻两个所述第二子公共电极之间的区域上。
  10. 根据权利要求2所述的蓝相液晶面板，其中，所述第一公共电极完全覆盖所述上基板，所述第二公共电极包括多个间隔设置在所述下基板上的第二子公共电极，所述像素电极设置在所述下基板的处于相邻两个所述第二子公共电极之间的区域上。
  11. 根据权利要求1所述的蓝相液晶面板，其中，所述第二公共电极完全覆盖所述下基板，所述第一公共电极包括多个间隔设置在所述上基板上的第一子公共电极，所述像素电极从所述第二公共电极中绝缘式地朝向相邻两个所述第一子公共电极之间的区域延伸。
  12. 根据权利要求2所述的蓝相液晶面板，其中，所述第二公共电极完全覆盖所述下基板，所述第一公共电极包括多个间隔设置在所述上基板上的第一子公共电极，所述像素电极从所述第二公共电极中绝缘式地朝向相邻两个所述第一子公共电极之间的区域延伸。
  13. 根据权利要求1所述的蓝相液晶面板，其中，所述第一公共电极包括多个间隔设置在所述上基板上的第一子公共电极，所述第二公共电极包括多个间隔设置在所述下基板上的第二子公共电极，其中，所述像素电极设置在所述下基板的处于相邻两个所述第二子公共电极之间的区域上。
  14. 根据权利要求2所述的蓝相液晶面板，其中，所述第一公共电极包括多个间隔设置在所述上基板上的第一子公共电极，所述第二公共电极包括多个间隔设置在所述下基板上的第二子公共电极，其中，所述像素电极设置在所述下基板的处于相邻两个所述第二子公共电极之间的区域上。
  15. 根据权利要求13所述的蓝相液晶面板，其中，所述第一子公共电极与所述第二子公共电极完全对应。
  16. 根据权利要求14所述的蓝相液晶面板，其中，所述第一子公共电极与所述第二子公共电极完全对应。
  17. 根据权利要求1所述的蓝相液晶面板，其中，所述像素电极的延伸长度大于等于所述上基板与所述下基板之间的间距的一半并且小于所述上基板与所述下基板之间的间距。
  18. 根据权利要求2所述的蓝相液晶面板，其中，所述像素电极的延伸长度大于等于所述上基板与所述下基板之间的间距的一半并且小于所述上基板与所述下基板之间的间距。
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