WO2016161669A1 - 透反式液晶显示面板和透反式液晶显示器 - Google Patents

透反式液晶显示面板和透反式液晶显示器 Download PDF

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WO2016161669A1
WO2016161669A1 PCT/CN2015/077276 CN2015077276W WO2016161669A1 WO 2016161669 A1 WO2016161669 A1 WO 2016161669A1 CN 2015077276 W CN2015077276 W CN 2015077276W WO 2016161669 A1 WO2016161669 A1 WO 2016161669A1
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Prior art keywords
liquid crystal
crystal display
transflective liquid
display panel
reflective
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English (en)
French (fr)
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谢畅
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US14/778,139 priority Critical patent/US9983434B2/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G02F1/133555—Transflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/09—Function characteristic transflective

Definitions

  • the invention belongs to the field of liquid crystal display technology, and in particular relates to a transflective liquid crystal panel and a transflective liquid crystal display.
  • the existing liquid crystal display panels can be classified into transmissive, reflective and transflective.
  • the transflective liquid crystal display panel can be regarded as a combination of a transmissive and reflective liquid crystal display panel, and is provided with a reflective area and a transmissive area on the array substrate, and can simultaneously use the backlight and the front light source or the external light source to perform display.
  • the transflective liquid crystal display panel has the advantages of both transmissive and reflective liquid crystal display panels, and can display bright images in a dark environment for indoor use or outdoor use. Therefore, transflective liquid crystal display panels are widely used in display devices for portable mobile electronic products.
  • a reflective layer is disposed in the array substrate in the conventional transflective liquid crystal display panel.
  • the reflective layer can be reached later, and the light reflected by the reflective layer is reflected back to be partially reflected.
  • the polarizer absorbs, so the backlight utilization is low.
  • the technical problem to be solved by the present invention is to further improve the utilization rate and light efficiency of the backlight in the transflective liquid crystal display panel.
  • the present invention provides a novel transflective liquid crystal display surface. The board and the liquid crystal display to which it is applied.
  • a transflective liquid crystal display panel includes an array substrate on which a plurality of sub-pixel regions are formed, each sub-pixel region including a transmissive region and a reflective region, and polarized light disposed on an outer surface of the array substrate
  • the sheet has a first surface facing the backlight.
  • a reflective layer is at least partially provided in a region of the first surface corresponding to the reflective region.
  • the present invention since the polarizing plate corresponding to the reflective region is covered with the reflective layer, the light emitted by the backlight in the reflective region is directly reflected back. This further improves backlight utilization and light efficiency, thereby reducing the power consumption of the display.
  • the present invention effectively avoids the light emitted by the backlight from being polarized during the reflection process by covering the polarizing plate with the reflective layer instead of providing the reflective layer in the array substrate. The light loss caused by the absorption of the sheet improves the utilization efficiency of the backlight.
  • the reflective layer is directly covered on the polarizer, the structure is simpler and the production is more convenient.
  • the reflective layer corresponds entirely to the reflective region.
  • the thickness of the reflective layer is set to gradually increase from the end near the transmissive region toward the direction of the reflective region. This embodiment allows light to be reflected back to the backlight to a maximum extent, and light reflected back to the backlight is reflected by a portion of the reflector of the backlight itself into the transmissive region, and another portion continues to be reflected between the reflective layer and the backlight.
  • the reflective layer is a metal layer.
  • the invention can select a metal layer with high reflectivity as a material of the reflective layer, which is directly coated on the polarizer to improve the light utilization efficiency of the backlight, and greatly reduces the production process cost.
  • the metal having high reflectance is preferably aluminum, silver or the like.
  • the surface of the metal layer is configured as a smooth or rough surface.
  • a metal layer with a smooth surface causes specular reflection of light from the backlight to enhance brightness; a metal layer with a rough surface causes diffused reflection of light from the backlight, and the diffusely reflected light is uniform in all directions. Divergence to avoid the appearance of local highlights.
  • the reflective layer includes a transparent film layer disposed on the polarizer and a metal layer coated on the transparent film layer.
  • the invention applies a high reflectivity metal layer on the corresponding position on the transparent film layer, and then places the transparent film layer according to the position of the reflection area, so that the processing technology of the display panel is simpler and the assembly is simpler.
  • the transparent film layer completely covers the polarizer, and the metal layer is at least partially coated on the transparent film layer corresponding to the reflective region.
  • the transparent film layer completely covers the polarizer to prevent the contrast and saturation of the liquid crystal display panel from being transmitted or reflected at the transflective junction.
  • the transparent film layer is made of a transparent plastic.
  • the transparent plastic is preferably polyvinyl chloride or polyethylene or polyethylene terephthalate.
  • the transmissive and reflective regions comprise the same positive liquid crystal material.
  • a transflective liquid crystal display comprising the transflective liquid crystal display panel described above.
  • the present invention has the following advantages:
  • the reflective layer can be directly coated or pasted on the polarizer, the structure is simpler and the production is simpler.
  • FIG. 1 is a schematic structural view of a first embodiment of a transflective liquid crystal display panel according to the present invention
  • FIG. 2 is a schematic view showing the structure of a second embodiment of a transflective liquid crystal display panel according to the present invention.
  • FIG. 1 is a schematic structural view of a transflective liquid crystal display panel 100 according to the present invention.
  • the display panel 100 includes an array substrate 50. A plurality of sub-pixel regions are formed on the array substrate 50, each The sub-pixel regions each include a transmissive area A and a reflective area B.
  • the display panel 100 further includes a polarizer 51 disposed on an outer surface of the array substrate 50, the polarizer 51 having a first surface 511 facing the backlight 70. Therein, a reflective layer is at least partially provided in a region of the first surface 511 corresponding to the reflective region B.
  • the present invention since the reflective layer is covered on the polarizer corresponding to the reflective region B, the light emitted by the backlight in the reflective region B can be directly reflected back, thereby further improving the utilization ratio and light efficiency of the backlight, thereby reducing the power consumption of the display. .
  • the present invention covers the reflective layer on the polarizer 51 instead of providing a reflective layer in the array substrate, and on the one hand, effectively avoids the light emitted by the backlight 70 due to the reflection process.
  • the light loss caused by the absorption by the polarizer improves the utilization efficiency of the backlight 70.
  • the reflective layer is directly covered on the polarizer 51, the production process is simple, the cost is low, and the display can be well used. performance.
  • the reflective layer 30 completely corresponds to the reflective area B.
  • the light emitted from the backlight 70 is completely reflected back in the reflection area B, the light loss of the light in the reflection area B and the absorption of light by the polarizer 51 are avoided, and the reflection efficiency of the light is further improved.
  • the reflective layer 30 is a metal layer.
  • the metal layer is directly coated on the polarizer 51 to improve the light utilization efficiency of the backlight 70.
  • the metal layer is preferably a material having high reflectance such as aluminum, silver or the like.
  • the thickness of the metal layer can be further designed, preferably to be gradually increased from the end near the transmissive area A toward the direction of the reflection area B.
  • This embodiment allows light to be reflected back to the backlight 70 as much as possible, and light reflected back to the backlight 70 is reflected by a portion of the reflector of the backlight 70 itself into the transmissive area A, and another portion continues between the reflective layer 30 and the backlight 70. reflection.
  • the surface of the metal layer may be configured as a smooth or rough surface.
  • a metal layer having a smooth surface causes specular reflection of light emitted by the backlight 70 to enhance brightness; a metal layer having a rough surface causes diffused reflection of light emitted by the backlight 70, and diffusely reflected light The direction is evenly diverged to avoid the appearance of local highlights.
  • the reflective layer 30' includes a transparent film layer 31' provided on the polarizing plate 51' and a metal layer 32' coated on the transparent film layer 31'.
  • the metal layer 32' may have all of the arrangement forms and materials of the above metal layers.
  • the transparent film layer 31' is made of a transparent plastic.
  • the transparent plastic is preferably PET (polyester), PE (polyethylene), and PCV (polyvinyl chloride). Further preferred are PET (polyester) and PCV (polyvinyl chloride), which are flat, antistatic, and have excellent weather resistance, and are environmentally friendly and non-polluting.
  • the present invention applies a highly reflective metal layer 32' at a corresponding position on the transparent film layer 31', and then places the transparent film layer 31' in accordance with the position of the reflection region B' to make the display surface
  • the board's processing technology is simpler and the assembly is simpler.
  • the transparent film layer 31' completely covers the polarizer 51', and the metal layer is at least partially coated on the transparent film layer 31' corresponding to the reflective area B'.
  • the transparent film layer 31' completely covers the polarizer 51' to prevent the contrast and saturation of the liquid crystal display panel 100' from being transmitted or reflected at the transflective interface, thereby ensuring the image quality of the liquid crystal display panel.
  • a reflection portion for further improving the reflection efficiency may be provided on the transparent film layer 31', and the reflection portion may be obtained, for example, by pressing a transparent film corresponding to the reflection region B.
  • a transflective liquid crystal display comprising the transflective liquid crystal display panel described above.
  • the transmissive area A and the reflective area B in the transflective liquid crystal display panel include the same positive liquid crystal material.
  • the working principle of the transflective liquid crystal display is the same as that of the existing double-box transparent transflective liquid crystal display, and will not be described herein.
  • the invention effectively avoids the light loss caused by the light emitted by the backlight due to absorption by the polarizer during the reflection process, thereby further improving the utilization efficiency of the backlight.
  • the present invention can also directly coat or affix a reflective layer on the polarizer to make the structure simpler and greatly reduce the production process cost.

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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)
  • Liquid Crystal (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种透反式液晶显示面板（100）和一种透反式液晶显示器。该透反式液晶显示面板（100）包括阵列基板（50），阵列基板（50）上形成有多个子像素区域，各子像素区域包括透射区（A）和反射区（B），以及设置在阵列基板(50)的外表面上的偏光片（51），偏光片（51）具有朝向背光源（70）的第一表面（511）。其中，在第一表面（511）的对应于反射区（B）的区域内至少部分地设有反射层（30）。有效地避免了背光源（70）发出的光因在反射过程中被偏光片（51）吸收而导致的光损失，从而进一步提高了背光源（70）的利用效率。其结构更简单，大大降低了生产工艺成本。

Description

透反式液晶显示面板和透反式液晶显示器
相关申请的交叉引用
本申请要求享有于2015年4月8日提交的名称为“透反式液晶显示面板和透反式液晶显示器”的中国专利申请CN201510162815.4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，具体涉及一种透反式液晶面板以及一种透反式液晶显示器。
背景技术
根据采用光源类型的不同，目前现有的液晶显示器面板可分为透射式、反射式和透反式。
透反式液晶显示面板可视为透射式与反射式液晶显示面板的结合，其在阵列基板上既设置有反射区，又设置有透射区，可以同时利用背光源以及前光源或者外界光源以进行显示。透反式液晶显示面板兼具透射式和反射式液晶显示面板的优点，既可以在暗的环境下显示明亮的图像以供室内使用，也可以在室外使用。因此，透反式液晶显示面板被广泛用于便携式移动电子产品的显示设备。
为了提高背光源的利用率和光效率，现有的透反式液晶显示面板中在阵列基板内设置了反射层。然而，对于现有技术中的这种设计，由于背光源发出的光首先需要通过设置在阵列基板外的偏光板，随后才能到达反射层，经反射层反射的光再反射回来时部分光线会被偏光片吸收，因此背光源利用率较低。
针对上述技术存在的问题，在本领域中希望寻求一种可进一步提高背光源的利用率和光效率的透反式液晶显示面板，以解决现有技术中的不足之处。
发明内容
本发明要解决的技术问题在于进一步提高透反式液晶显示面板中背光源的利用率和光效率，为达到该技术要求，本发明提供了一种新型透反式液晶显示面 板以及应用其的液晶显示器。
根据本发明提供的一种透反式液晶显示面板，包括阵列基板，阵列基板上形成有多个子像素区域，各子像素区域包括透射区和反射区，以及设置在阵列基板的外表面上的偏光片，偏光片具有朝向背光源的第一表面。其中，在第一表面的对应于反射区的区域内至少部分地设有反射层。
根据本发明，由于在对应反射区的偏光片上覆盖有反射层，因此背光源所发出的处于反射区内的光会被直接反射回去。这进一步提高了背光源的利用率和光效率，从而降低了显示器的功耗。与现有的透反式液晶显示面板相比，本发明通过在偏光片上覆盖反射层而非在阵列基板内设置反射层，一方面有效地避免了背光源发出的光因在反射过程中被偏光片吸收而导致的光损失，从而提高了背光源的利用效率，另一方面由于直接在偏光片上覆盖反射层，其结构更简单，制作更方便。
在一些实施方案中，反射层完全对应于反射区。通过这种设置，背光源发出的光在反射区内被完全反射回来，避免了光在反射区内的光损失以及偏光片对光的吸收，进一步提高了光的反射效率。
在一些实施方案中，反射层的厚度设置成由靠近透射区的一端向反射区的方向上逐渐增加。该实施方案可使光最大限度地反射回背光源，反射回背光源的光经过背光源自身的反射板一部分反射进入透射区，另一部分在反射层与背光源之间继续反射。
在一些实施方案中，反射层为金属层。本发明可选择具有高反射率的金属层作为反射层的材料，其直接涂覆在偏光片上以提高背光源的光利用率，大大降低了生产工艺成本。具有高反射率的金属优选为铝、银等。
在一些实施方案中，金属层的表面构造成光滑面或粗糙面。具有光滑表面的金属层使背光源发出的光在此处发生镜面反射，可增强亮度；具有粗糙表面的金属层使背光源发出的光在此发生漫反射，经漫反射的光在各个方向均匀发散，从而避免局部亮点的出现。
在一些实施方案中，反射层包括设在偏光片上的透明薄膜层和涂覆在透明薄膜层上的金属层。本发明通过在透明薄膜层上的相应位置涂覆高反射率的金属层，再按照反射区的位置相应贴放透明薄膜层，使显示面板的加工工艺更简单，装配也更简单。
在一些实施方案中，透明薄膜层完全覆盖在偏光片上，金属层至少部分地涂覆在对应于反射区的透明薄膜层上。透明薄膜层完全覆盖在偏光片上可避免光在透反交界处发生透射或反射时对液晶显示面板的对比度和饱和度产生影响。
在一些实施方案中，透明薄膜层由透明塑料制成。透明塑料优选为聚氯乙烯或聚乙烯或聚对苯二甲酸乙二酯。
在一些实施方案中，透射区和反射区包括相同的正性液晶材料。
根据本发明提供的一种透反式液晶显示器，该透反式液晶显示器包括上述透反式液晶显示面板。
与现有技术相比，本发明具有以下优点：
1)通过将反射层设置在偏光片的外表面，有效地避免了背光源发出的光因在反射过程中被偏光片吸收而导致的光损失，从而进一步提高了背光源的利用效率。
2)由于可直接在偏光片上涂覆或粘贴反射层，使其结构更简单，制作也更简便。
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是根据本发明的透反式液晶显示面板的第一实施例的结构示意图；
图2是根据本发明的透反式液晶显示面板的第二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透反式液晶显示面板100的结构示意图。该显示面板100包括阵列基板50。在阵列基板50上形成有多个子像素区域，各 子像素区域均包括透射区A和反射区B。显示面板100还包括设置在阵列基板50的外表面上的偏光片51，该偏光片51具有朝向背光源70的第一表面511。其中，在第一表面511的对应于反射区B的区域内至少部分地设有反射层。
根据本发明，由于在对应反射区B的偏光片上覆盖反射层，可以将背光源在反射区B发出的光直接反射回去，进一步提高了背光源的利用率和光效率，从而降低了显示器的功耗。与现有的透反式液晶显示面板相比，本发明在偏光片51上覆盖反射层而非在阵列基板内设置反射层，一方面有效地避免了背光源70发出的光因在反射过程中被偏光片吸收而导致的光损失，从而提高了背光源70的利用效率，另一方面由于直接在偏光片51上覆盖反射层，其生产工艺简单，成本低，同时还能保证显示器良好的使用性能。
根据本发明的第一实施例，如图1所示，反射层30完全对应于反射区B。通过这种设置，背光源70发出的光在反射区B内被完全反射回来，避免了光在反射区B内的光损失以及偏光片51对光的吸收，进一步提高了光的反射效率。
优选地，反射层30为金属层。该金属层直接涂覆在偏光片51上以提高背光源70的光利用率。该金属层优选具有高反射率的材料，如铝、银等。
根据本发明的第一实施例，可以对金属层的厚度进行进一步设计，优选设置成由靠近透射区A的一端向反射区B的方向上逐渐增加。该实施方案可使光最大限度地反射回背光源70，反射回背光源70的光经过背光源70自身的反射板一部分反射进入透射区A，另一部分在反射层30与背光源70之间继续反射。
另外，金属层的表面可构造成光滑面或粗糙面。具有光滑表面的金属层使背光源70发出的光在此处发生镜面反射，可增强亮度；具有粗糙表面的金属层使背光源70发出的光在此发生漫反射，经漫反射的光在各个方向均匀发散，从而避免局部亮点的出现。
根据本发明的第二实施例，如图2所示，反射层30’包括设在偏光片51’上的透明薄膜层31’和涂覆在透明薄膜层31’上的金属层32’。该金属层32’可具有上述金属层的所有设置形式以及材料。其中，透明薄膜层31’由透明塑料制成。透明塑料优选为PET(聚酯)、PE(聚乙烯)和PCV(聚氯乙烯)等。进一步优选为PET(聚酯)和PCV(聚氯乙烯)，此种材料平整、防静电，耐候性优良，并且环保无污染。本发明通过在透明薄膜层31’上的相应位置涂覆高反射率的金属层32’，再按照反射区B’的位置相应贴放透明薄膜层31’，使显示面 板的加工工艺更简单，装配也更简单。
优选地，透明薄膜层31’完全覆盖在偏光片51’上，金属层至少部分地涂覆在对应于反射区B’的透明薄膜层31’上。透明薄膜层31’完全覆盖在偏光片上51’可避免光在透反交界处发生透射或反射时对液晶显示面板100’的对比度和饱和度产生影响，从而保证液晶显示面板的成像质量。
还优选地，可在透明薄膜层31’上设置用于进一步提高反射效率的反射部，该反射部例如可以通过对对应反射区B的透明薄膜进行压制得到。
根据本发明提供的一种透反式液晶显示器，该透反式液晶显示器包括上述透反式液晶显示面板。其中透反式液晶显示面板中的透射区A和反射区B包括相同的正性液晶材料。该透反式液晶显示器的工作原理与现有双盒厚透反液晶显示器的工作原理相同，这里不再赘述。
本发明通过将反射层设置在偏光片的外表面，有效地避免了背光源发出的光因在反射过程中被偏光片吸收而导致的光损失，从而进一步提高了背光源的利用效率。另外，本发明由于还可直接在偏光片上涂覆或粘贴反射层，使其结构更简单，大大降低了生产工艺成本。
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 (17)

  1. 一种透反式液晶显示面板，包括：
    阵列基板，所述阵列基板上形成有多个子像素区域，各所述子像素区域包括透射区和反射区，以及
    设置在所述阵列基板的外表面上的偏光片，所述偏光片具有朝向背光源的第一表面，
    其中，在所述第一表面的对应于所述反射区的区域内至少部分地设有反射层。
  2. 根据权利要求1所述的透反式液晶显示面板，其中，所述反射层完全对应于所述反射区。
  3. 根据权利要求1所述的透反式液晶显示面板，其中，所述反射层的厚度设置成由靠近所述透射区的一端向所述反射区的方向上逐渐增加。
  4. 根据权利要求2所述的透反式液晶显示面板，其中，所述反射层的厚度设置成由靠近所述透射区的一端向所述反射区的方向上逐渐增加。
  5. 根据权利要求1所述的透反式液晶显示面板，其中，所述反射层为金属层。
  6. 根据权利要求2所述的透反式液晶显示面板，其中，所述反射层为金属层。
  7. 根据权利要求5所述的透反式液晶显示面板，其中，所述金属层的表面构造成光滑面或粗糙面。
  8. 根据权利要求6所述的透反式液晶显示面板，其中，所述金属层的表面构造成光滑面或粗糙面。
  9. 根据权利要求1所述的透反式液晶显示面板，其中，所述反射层包括设在所述偏光片上的透明薄膜层和涂覆在所述透明薄膜层上的金属层。
  10. 根据权利要求2所述的透反式液晶显示面板，其中，所述反射层包括设在所述偏光片上的透明薄膜层和涂覆在所述透明薄膜层上的金属层。
  11. 根据权利要求9所述的透反式液晶显示面板，其中，所述透明薄膜层完全覆盖在所述偏光片上，所述金属层至少部分地涂覆在对应于所述反射区的透明薄膜层上。
  12. 根据权利要求10所述的透反式液晶显示面板，其中，所述透明薄膜层完全覆盖在所述偏光片上，所述金属层至少部分地涂覆在对应于所述反射区的透明 薄膜层上。
  13. 根据权利要求9所述的透反式液晶显示面板，其中，所述透明薄膜层由透明塑料制成。
  14. 根据权利要求10所述的透反式液晶显示面板，其中，所述透明薄膜层由透明塑料制成。
  15. 根据权利要求1所述的透反式液晶显示面板，其中，所述透射区和所述反射区包括相同的正性液晶材料。
  16. 根据权利要求2所述的透反式液晶显示面板，其中，所述透射区和所述反射区包括相同的正性液晶材料。
  17. 一种透反式液晶显示器，包括透反式液晶显示面板，所述透反式液晶显示面板包括：
    阵列基板，所述阵列基板上形成有多个子像素区域，各所述子像素区域包括透射区和反射区，以及
    设置在所述阵列基板的外表面上的偏光片，所述偏光片具有朝向背光源的第一表面，
    其中，在所述第一表面的对应于所述反射区的区域内至少部分地设有反射层。
PCT/CN2015/077276 2015-04-08 2015-04-23 透反式液晶显示面板和透反式液晶显示器 Ceased WO2016161669A1 (zh)

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