WO2016201736A1 - 液晶显示器 - Google Patents

液晶显示器 Download PDF

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Publication number
WO2016201736A1
WO2016201736A1 PCT/CN2015/083126 CN2015083126W WO2016201736A1 WO 2016201736 A1 WO2016201736 A1 WO 2016201736A1 CN 2015083126 W CN2015083126 W CN 2015083126W WO 2016201736 A1 WO2016201736 A1 WO 2016201736A1
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liquid crystal
blue light
crystal display
light
polarized
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French (fr)
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徐向阳
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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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
    • G02F1/133528—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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • 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

Definitions

  • the invention belongs to the technical field of liquid crystal display, and in particular relates to a liquid crystal display.
  • the conventional liquid crystal display 100' generally includes a white light backlight 10', a lower polarizer 20', an array substrate 30', a liquid crystal layer 40', a color filter substrate 50', and an upper polarizer 60 which are sequentially disposed. '.
  • the principle of illumination is as follows: the white light backlight 10' emits a plane natural white light a', and the plane natural white light a' is filtered by the lower polarizer 20' to generate linearly polarized white light a1', and the linearly polarized white light a1' undergoes liquid crystal modulation to change the polarization direction. After the red color resist R, the green color resist G and the blue color resist B on the color filter substrate 50', red light polarized light a4', green light polarized light a2' and blue light polarized light a3' are formed, and red light polarized light a4 is formed.
  • the outgoing light of the conventional liquid crystal display 100' is polarized light.
  • the human eye will be more comfortable to use in a natural light environment.
  • the human eye works in a polarized environment for a long time, it may cause discomfort to the human eye and even cause harm to the human eye.
  • the liquid crystal molecules themselves have a rod-like structure, the angle of view of the light modulated by the liquid crystal molecules is usually less than 180 degrees, that is, a full viewing angle display of 180 degrees cannot be achieved.
  • the present invention proposes a liquid crystal display according to the deficiencies of the prior art.
  • a liquid crystal display includes a blue backlight; a liquid crystal display panel for receiving light from a blue backlight and emitting polarized blue light; and a quantum dot layer, wherein quantum dots in the quantum dot layer can be excited by polarized blue light, Thereby forming natural light.
  • the blue light emitted by the blue backlight generates polarized blue light after passing through the liquid crystal display panel, so that the polarized blue light excites the quantum dots in the quantum dot layer to form natural light, which has the natural light compared with the polarized light emitted by the liquid crystal display in the prior art.
  • the larger viewing angle is also more suitable for the physiological structure of the human eye, so it will make the human eye feel more comfortable when using it.
  • a plurality of quantum dots can be disposed in the quantum dot layer as needed, so that the light formed by the polarized blue light to excite various quantum dots has higher brightness and wider color gamut.
  • the present invention uses a blue light backlight as a light source, which can improve the luminous efficiency of the backlight and reduce the cost of the backlight.
  • the liquid crystal display panel includes a color filter substrate including a plurality of sub-pixel units, each of the sub-pixel units including a plurality of blue color resists having different transmittances, such that blue light emitted by the blue backlight passes through each blue After the color resists, different polarized blue light is formed correspondingly.
  • a plurality of blue color resists of each pixel unit are used to transmit polarized blue light of different wavelengths, and polarized blue light of different wavelengths respectively excite quantum dots in the quantum dot layer to make the color gamut of the emitted natural light wider.
  • the plurality of blue color resists includes a first blue color resist, a second blue color resist, and a third blue color resist.
  • the blue light emitted by the blue backlight passes through the first blue color resistance, the second blue color resistance, and the third blue color resistance to form a first polarized blue light, a second polarized blue light, and a third polarized blue light.
  • three blue color resists are preferably used as one sub-pixel unit, and the polarized blue light is separated by three kinds of polarized blue light having different wavelengths after the first blue color resist, the second blue color resist, and the third blue color resist.
  • the polarized blue light collectively excites the quantum dots in the quantum dot layer, so that the liquid crystal display produces more color display, and at the same time, the color of the display screen of the liquid crystal display is more full.
  • the first polarized blue light has a wavelength in the range of 450 nanometers to 455 nanometers; the second polarized blue light has a wavelength in the range of 455 nanometers to 465 nanometers; and the third polarized blue light has a wavelength in the range of 465 nanometers to 470 nanometers.
  • the polarized blue light in these wavelength ranges enables a better display of the liquid crystal display, and on the other hand, the human eye feels more comfortable when viewing the display screen of the liquid crystal display.
  • the quantum dot layer includes quantum dots that are at least capable of being excited by one of a first polarized blue light, a second polarized blue light, or a third polarized blue light to produce corresponding red, green, and blue light.
  • the quantum dot layer includes quantum dots that are capable of being excited by the first polarized blue light, the second polarized blue light, and the third polarized blue light, respectively, to produce corresponding red, green, and blue light.
  • the presence of multiple quantum dots in the setup enables it to be fully excited by the corresponding first, blue, and third polarized blue light, which enhances the first, second, and third polarized blue light. Use efficiency.
  • the first polarized blue light, the second polarized blue light, and the third polarized blue light excite the corresponding quantum dots to achieve higher color gamut display.
  • the quantum dots are uniformly distributed within the quantum dot layer.
  • the solution can make the light output of the liquid crystal display more uniform, so that the human eye feels more comfortable when viewing the display screen of the liquid crystal display.
  • the liquid crystal display panel further includes an array substrate disposed opposite to the color filter substrate.
  • the first polarizer is disposed on a side of the array substrate away from the color filter substrate, and the first side of the color filter substrate is disposed away from the array substrate.
  • Two polarizers, and the transmission axis of the first polarizer is perpendicular to the transmission axis of the second polarizer.
  • the liquid crystal display panel is caused to emit blue-polarized light, and then, the emitted blue-polarized light is utilized to obtain natural light suitable for use.
  • the polarizing angle of the first polarizer is 60 degrees
  • the polarizing angle of the second polarizer is 150 degrees.
  • a liquid crystal layer is disposed between the color filter substrate and the array substrate, and the liquid crystal layer is formed of a blue phase liquid crystal.
  • the polarization angles of the first polarizer and the second polarizer are set according to specific needs to suit different liquid crystals.
  • the present invention has the following advantages:
  • the light that forms the display screen of the liquid crystal display is natural light, it is more suitable for the physiological structure of the human eye, and thus makes the human eye more comfortable;
  • the light emitted by the blue backlight passes through different blue color resists to form different polarized blue light.
  • Different polarized blue light forms natural white light by exciting corresponding quantum dots in the quantum dot layer, and the natural white light has higher brightness and more Wide color gamut;
  • the use of the blue backlight in the present invention can improve the luminous efficiency of the backlight and reduce the cost of the backlight.
  • FIG. 1 is a schematic structural view of a liquid crystal display according to the present invention.
  • FIG. 2 is a schematic diagram of pixel division of a color filter substrate of a liquid crystal display according to the present invention
  • FIG. 3 is a schematic structural view of a liquid crystal display in the prior art
  • FIG. 4 is a schematic diagram of pixel division of a color filter substrate of a liquid crystal display in the prior art.
  • the liquid crystal display 100 includes a blue backlight 10; a liquid crystal display panel 90 for receiving light from the blue backlight 10 and emitting polarized blue light; and a quantum dot layer 70, the quantum dots in the quantum dot layer 70 can be excited by polarized blue light, thereby Form natural light.
  • the blue light emitted by the blue backlight 10 is polarized blue after passing through the liquid crystal display panel 90, so that the polarized blue light excites the quantum dots in the quantum dot layer 70 to form natural light, which is different from the polarization of the liquid crystal display 100' in the prior art.
  • it has a larger viewing angle and is more suitable for the physiological structure of the human eye. Therefore, the human eye feels more comfortable when viewing the display screen of the liquid crystal display 100.
  • a plurality of quantum dots can be disposed in the quantum dot layer 70 as needed, so that the light formed by the polarized blue light to excite various quantum dots has higher brightness and wider color gamut.
  • the present invention uses the blue backlight 10 as a light source, which can improve the luminous efficiency of the backlight and reduce the cost of the backlight.
  • the liquid crystal display panel 90 includes a color filter substrate 50 including a plurality of sub-pixel units, each of the sub-pixel units including a plurality of blue color resists having different transmittances, such that the blue backlight The blue light emitted by the source 10 passes through the respective blue color resists to form different polarized blue light.
  • a plurality of blue color resists of each pixel unit are used to transmit polarized blue light of different wavelengths, and polarized blue light of different wavelengths respectively excite quantum dots in the quantum dot layer 70 to have a wider color gamut display of the emitted natural light.
  • each sub-pixel unit includes a first blue color resistance B1, a second blue color resistance B2, and a first Three blue color resistance B3.
  • the natural blue light a emitted by the blue backlight 10 passes through the first blue color resistance B1, the second blue color resistance B2, and the third blue color resistance B3 to form a first polarization blue a4, a second polarization blue a2, and a third polarization.
  • Blu-ray a3 The natural blue light a emitted by the blue backlight 10 passes through the first blue color resistance B1, the second blue color resistance B2, and the third blue color resistance B3 to form a first polarization blue a4, a second polarization blue a2, and a third polarization.
  • three blue color resists are preferably used as one sub-pixel unit, and the polarized blue light a1 is separated by three kinds of different wavelengths after passing through the first blue color resist B1, the second blue color resist B2, and the third blue color resist B3.
  • the polarized blue light, the three polarized blue lights collectively excite the quantum dots in the quantum dot layer 70, thereby causing the liquid crystal display 100 to generate more kinds of color display, thereby making the color of the display screen of the liquid crystal display 100 more full.
  • the liquid crystal display 100 of the present invention has a different structure and display principle than the conventional liquid crystal display 100'.
  • the backlight of the present invention uses a blue light backlight 10 with high luminous efficiency.
  • the blue backlight 10 emits a plane natural blue light a, and the planar natural blue light a is filtered by the lower polarizer 20 to generate a linearly polarized blue a1.
  • the polarized blue light a1 is changed in polarization direction after being modulated by the liquid crystal, and forms a first polarized blue a4, a second polarized blue a2, and a third polarized blue after passing through the first blue color resist B1, the second blue color resist B2, and the third blue color resist B3.
  • the display 100 is capable of displaying a color picture formed by natural light.
  • the first polarized blue light a4 has a wavelength in the range of 450 nm to 455 nm; the second polarized blue a2 has a wavelength in the range of 455 nm to 465 nm; and the third polarized blue a3 has a wavelength in the range of 465 nm to 470 nm.
  • the polarized blue light in these wavelength ranges enables a better picture display of the liquid crystal display 100, and on the other hand, makes the human eye feel more comfortable when viewing the display screen.
  • quantum dot layer 70 includes quantum dots that are at least capable of being excited by one of first polarized blue a4, second polarized blue a2, or third polarized blue a3 to produce corresponding red, green, and blue light. With this arrangement, it is possible to realize a color screen in which the liquid crystal display 100 displays natural light.
  • quantum dot layer 70 includes quantum dots that are respectively excited by first polarized blue a4, second polarized blue a2, and third polarized blue a3 to produce corresponding red, green, and blue light.
  • the presence of a plurality of quantum dots in the arrangement enables complete excitation by the respective first polarized blue a4, second polarized blue a2, and third polarized blue a3, which enhances the first polarized blue a4, the second polarized blue.
  • the first polarized blue a4, the second polarized blue a2, and the third polarized blue a3 excite the corresponding quantum dots to realize a color picture with higher color gamut display.
  • the quantum dots are uniformly distributed within the quantum dot layer 70.
  • the solution can make the light output of the liquid crystal display 100 more uniform and the picture is softer, so that the human eye can view the picture displayed by the liquid crystal display 100. It feels more comfortable.
  • the liquid crystal display panel 100 further includes an array substrate 30 disposed opposite to the color filter substrate 50 .
  • the first polarizer 20 is disposed on a side of the array substrate 30 away from the color filter substrate 50 .
  • a second polarizer 60 is disposed on a side of the 50 that is away from the array substrate 30, and the transmission axis of the first polarizer 20 is perpendicular to the transmission axis of the second polarizer 60.
  • the liquid crystal display panel 100 is caused to emit blue-polarized light, and then, the emitted blue-polarized light is utilized to obtain natural light suitable for use.
  • a liquid crystal layer 40 is disposed between the color filter substrate 50 and the array substrate 30, and the liquid crystal layer 40 is formed of a blue phase liquid crystal.
  • the polarization angle of the first polarizer 20 is 60 degrees
  • the polarization angle of the second polarizer 60 is 150 degrees. It can be understood that the designer can set the polarization angles of the first polarizer 20 and the second polarizer 60 to suit different liquid crystals according to specific needs.

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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)
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Abstract

液晶显示器（100）包括蓝光背光源（10）；液晶显示面板（90），用于接收来自蓝光背光源（10）的光并发出偏振蓝光；量子点层（70），量子点层（70）中的量子点能够被偏振蓝光激发，从而形成自然光。该自然光形成的画面显示具有更大的视角，也更适合人眼的生理结构，因此，会使人眼在使用时感觉更舒适。同时，液晶显示器（100）具有更高的光亮度以及更广的色域显示。

Description

液晶显示器
相关申请的交叉引用
本申请要求享有于2015年6月19日提交的名称为“液晶显示器”的中国专利申请CN201510344859.9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，具体涉及一种液晶显示器。
背景技术
在现有的液晶显示器中，根据液晶的光学特性，需要在液晶盒的两侧加上偏光片才能实现液晶显示器的正常工作。如图3所示，现有的液晶显示器100’通常包括依次设置的白光背光源10’、下偏光片20’、阵列基板30’、液晶层40’、彩膜基板50’和上偏光片60’。其发光原理为：白光背光源10’发出平面自然白光a’，平面自然白光a’经过下偏光片20’过滤后产生线偏振白光a1’，线偏振白光a1’经过液晶调制后偏振方向改变，经过彩膜基板50’上的红色色阻R、绿色色阻G和蓝色色阻B后对应形成红光偏振光a4’、绿光偏振光a2’和蓝光偏振光a3’，红光偏振光a4’、绿光偏振光a2’和蓝光偏振光a3’经混合形成白色偏振光b’，该白色偏振光b’经过上偏光片60’射出液晶显示器100’，使液晶显示器100’形成具有彩色图案的偏振画面。
综上所述，现有的液晶显示器100’的出射光线为偏振光。然而通常情况下，人眼在自然光的环境中使用会更加舒适，当人眼长期工作在偏振光的环境下，会致使人眼感到不适甚至会对人眼造成危害。另外，由于液晶分子本身为棒状结构，因此经过液晶分子调制的光的视角通常会小于180度，即无法实现180度的全视角显示。
针对上述技术存在的问题，在本领域中希望寻求一种能够出射自然光的液晶显示器，其具有更大的视角显示，同时也使人眼对该液晶显示器显示的画面的体验更为舒适，从而解决现有技术中的不足之处。
发明内容
本发明根据现有技术的不足之处提出了一种液晶显示器。
根据本发明提供的一种液晶显示器，包括蓝光背光源；液晶显示面板，用于接收来自蓝光背光源的光并发出偏振蓝光；量子点层，量子点层中的量子点能够被偏振蓝光激发，从而形成自然光。
本发明中蓝光背光源发出的蓝光经液晶显示面板后产生偏振蓝光，使得偏振蓝光激发量子点层内的量子点以形成自然光，该自然光与现有技术中液晶显示器出射的偏振光相比，具有更大的视角，也更适合人眼的生理结构，因此，会使人眼在使用时感觉更舒适。同时，根据需要可在量子点层内设置多种量子点，以使偏振蓝光激发多种量子点后形成的光的亮度更高，色域更广。另外，本发明使用蓝光背光源作为光源，可提高背光源的发光效率，降低背光源的成本。
在一些实施方案中，液晶显示面板包括彩膜基板，彩膜基板包括多个子像素单元，各子像素单元包括具有不同的透射率的多个蓝色色阻，使得蓝光背光源发出的蓝光经过各蓝色色阻后相应形成不同的偏振蓝光。在该方案中各像素单元的多个蓝色色阻用于透过不同波长的偏振蓝光，不同波长的偏振蓝光分别激发量子点层内的量子点以使得出射的自然光的色域更广。
在一些实施方案中，多个蓝色色阻包括第一蓝色色阻、第二蓝色色阻和第三蓝色色阻。其中，蓝光背光源发出的蓝光经过第一蓝色色阻、第二蓝色色阻和第三蓝色色阻后相应形成第一偏振蓝光、第二偏振蓝光和第三偏振蓝光。该方案中优选采用三种蓝色色阻作为一个子像素单元，偏振蓝光经过第一蓝色色阻、第二蓝色色阻和第三蓝色色阻后被分离出具有不同波长的三种偏振蓝光，三种偏振蓝光共同激发量子点层内的量子点，从而使液晶显示器产生了更多的色彩显示，同时也使液晶显示器的显示画面的色彩更加饱满。
在一些实施方案中，第一偏振蓝光的波长范围为450纳米至455纳米；第二偏振蓝光的波长范围为455纳米至465纳米；第三偏振蓝光的波长范围为465纳米至470纳米。在这些波长范围内的偏振蓝光一方面能够实现液晶显示器更好的画面显示，另一方面使人眼在观看液晶显示器的显示画面时感觉更加舒适。
在一些实施方案中，量子点层包括至少能够被第一偏振蓝光、第二偏振蓝光或第三偏振蓝光中的一种激发而产生相应红光、绿光和蓝光的量子点。通过这种设置，能够实现液晶显示器显示出由自然光形成的彩色画面。
在一些实施方案中，量子点层包括能够分别被第一偏振蓝光、第二偏振蓝光和第三偏振蓝光激发而产生相应红光、绿光和蓝光的量子点。该设置中多种量子点的存在使其能够被相应的第一偏振蓝光、第二偏振蓝光和第三偏振蓝光完全激发，这便提高了第一偏振蓝光、第二偏振蓝光和第三偏振蓝光的使用效率。同时，第一偏振蓝光、第二偏振蓝光和第三偏振蓝光激发相应的量子点可以实现更高的色域显示。
在一些实施方案中，量子点均匀分布在量子点层内。该方案可使液晶显示器的出光更均匀，从而使人眼在观看液晶显示器的显示画面时感觉更舒适。
在一些实施方案中，液晶显示面板还包括与彩膜基板相对设置的阵列基板，阵列基板的远离彩膜基板的一面设置有第一偏光片，彩膜基板上的远离阵列基板的一面设置有第二偏光片，并且第一偏光片的透光轴与第二偏光片的透光轴垂直。在第一偏振片和第二偏振片的共同作用下，使液晶显示面板出射蓝偏振光，随后，对出射的蓝偏振光进行利用，便可得到适于使用的自然光。优选地，第一偏光片的偏光角度为60度，第二偏光片的偏光角度为150度。
在一些实施方案中，彩膜基板与阵列基板之间设置有液晶层，液晶层由蓝相液晶形成。根据具体需要来设定第一偏光片和第二偏光片的偏光角度以适应不同的液晶。
与现有技术相比，本发明具有以下优点：
1)本发明中由于形成液晶显示器显示画面的光线为自然光，其更适合人眼的生理结构，因此会使人眼更舒适；
2)蓝光背光源发出的光经过不同的蓝色色阻后形成不同的偏振蓝光，不同的偏振蓝光通过激发量子点层内的相应量子点后形成自然白光，该自然白光具有更高的亮度以及更广的色域；
3)相比于现有技术中的白色背光源，本发明中蓝色背光源的使用可提高背光源的发光效率，降低背光源的成本。
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是根据本发明的液晶显示器的结构示意图；
图2是根据本发明的液晶显示器的彩膜基板的像素划分示意图；
图3是现有技术中的液晶显示器的结构示意图；
图4是现有技术中的液晶显示器的彩膜基板的像素划分示意图。
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液晶显示器100的结构示意图。该液晶显示器100包括蓝光背光源10；液晶显示面板90，用于接收来自蓝光背光源10的光并发出偏振蓝光；量子点层70，量子点层70中的量子点能够被偏振蓝光激发，从而形成自然光。
本发明中蓝光背光源10发出的蓝光经液晶显示面板90后产生偏振蓝光，使得偏振蓝光激发量子点层70内的量子点以形成自然光，该自然光与现有技术中液晶显示器100’出射的偏振光相比，具有较更大的视角，也更适合人眼的生理结构，因此，会使人眼在观看液晶显示器100的显示画面时感觉更舒适。同时，根据需要可在量子点层70内设置多种量子点，以使偏振蓝光激发多种量子点后形成的光的亮度更高，色域更广。另外，本发明使用蓝光背光源10作为光源，可提高背光源的发光效率，降低背光源的成本。
根据本发明，如图1所示，液晶显示面板90包括彩膜基板50，彩膜基板50包括多个子像素单元，各子像素单元包括具有不同的透射率的多个蓝色色阻，使得蓝光背光源10发出的蓝光经过各蓝色色阻后相应形成不同的偏振蓝光。在该方案中各像素单元的多个蓝色色阻用于透过不同波长的偏振蓝光，不同波长的偏振蓝光分别激发量子点层70内的量子点以使出射的自然光具有更广的色域显示。
如图1所示的实施例中，与现有技术中如图4所示的彩膜基板50’上的像素划分不同，本发明优选将彩膜基板50上的像素划分为如图2所示的色阻排布。结合图1和图2，每个子像素单元包括第一蓝色色阻B1、第二蓝色色阻B2和第 三蓝色色阻B3。其中，蓝光背光源10发出的自然蓝光a经过第一蓝色色阻B1、第二蓝色色阻B2和第三蓝色色阻B3后相应形成第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3。该方案中优选采用三种蓝色色阻作为一个子像素单元，偏振蓝光a1经过第一蓝色色阻B1、第二蓝色色阻B2和第三蓝色色阻B3后被分离出具有不同波长的三种偏振蓝光，三种偏振蓝光共同激发量子点层70内的量子点，从而使液晶显示器100产生了更多种类的色彩显示，进而使液晶显示器100的显示画面的色彩更加饱满。
与现有的液晶显示器100’相比，本发明的液晶显示器100具有不同的结构和显示原理。如图1所示，本发明中背光源采用发光效率较高的蓝光背光源10，蓝光背光源10发出平面自然蓝光a，平面自然蓝光a经过下偏光片20过滤后产生线偏振蓝光a1，线偏振蓝光a1经过液晶调制后偏振方向改变，经过第一蓝色色阻B1、第二蓝色色阻B2和第三蓝色色阻B3后形成第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3，第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3经过上偏光片60射出，继续激发量子点层70内的量子点后形成自然光b4、自然光b2和自然光b3，从而使液晶显示器100能够显示自然光形成的彩色画面。
优选地，第一偏振蓝光a4的波长范围为450纳米至455纳米；第二偏振蓝光a2的波长范围为455纳米至465纳米；第三偏振蓝光a3的波长范围为465纳米至470纳米。在这些波长范围内的偏振蓝光一方面能够实现液晶显示器100更好的画面显示，另一方面使人眼在观看显示画面时感觉更加舒适。
根据本发明，量子点层70包括至少能够被第一偏振蓝光a4、第二偏振蓝光a2或第三偏振蓝光a3中的一种激发而产生相应红光、绿光和蓝光的量子点。通过这种设置，能够实现液晶显示器100显示自然光形成的彩色画面。
优选地，量子点层70包括能够分别被第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3激发而产生相应红光、绿光和蓝光的量子点。该设置中多种量子点的存在使其能够被相应的第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3激发完全激发，这便提高了第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3的使用效率。同时，第一偏振蓝光a4、第二偏振蓝光a2和第三偏振蓝光a3激发相应的量子点可以实现具有更高色域显示的彩色画面。
进一步优选地，量子点均匀分布在量子点层70内。该方案可使液晶显示器100的出光更均匀，画面更柔和，从而使人眼在观看液晶显示器100显示的画面 时感觉更舒适。
根据本发明，如图1所示，液晶显示面板100还包括与彩膜基板50相对设置的阵列基板30，阵列基板30的远离彩膜基板50的一面设置有第一偏光片20，彩膜基板50上的远离阵列基板30的一面设置有第二偏光片60，并且第一偏光片20的透光轴与第二偏光片60的透光轴垂直。在第一偏光片20和第二偏光片60的共同作用下，使液晶显示面板100出射蓝偏振光，随后，对出射的蓝偏振光进行利用，便可得到适于使用的自然光。
如图1所示的实施例中，彩膜基板50与阵列基板30之间设置有液晶层40，液晶层40由蓝相液晶形成。优选地，第一偏光片20的偏光角度为60度，第二偏光片60的偏光角度为150度。可以理解的是，设计人员可根据具体需要来设定第一偏光片20和第二偏光片60的偏光角度以适应不同的液晶。
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 (13)

  1. 一种液晶显示器，包括：
    蓝光背光源；
    液晶显示面板，用于接收来自所述蓝光背光源的光并发出偏振蓝光；
    量子点层，其中所述量子点层中的量子点能够被所述偏振蓝光激发，从而形成自然光。
  2. 根据权利要求1所述的液晶显示器，其中，所述液晶显示面板包括彩膜基板，所述彩膜基板包括多个子像素单元，各所述子像素单元包括具有不同的透射率的多个蓝色色阻，使得所述蓝光背光源发出的蓝光经过各所述蓝色色阻后相应形成不同的偏振蓝光。
  3. 根据权利要求2所述的液晶显示器，其中，所述多个蓝色色阻包括第一蓝色色阻、第二蓝色色阻和第三蓝色色阻，其中，所述蓝光背光源发出的蓝光经过所述第一蓝色色阻、第二蓝色色阻和第三蓝色色阻后相应形成第一偏振蓝光、第二偏振蓝光和第三偏振蓝光。
  4. 根据权利要求3所述的液晶显示器，其中，所述第一偏振蓝光的波长范围为450纳米至455纳米；所述第二偏振蓝光的波长范围为455纳米至465纳米；所述第三偏振蓝光的波长范围为465纳米至470纳米。
  5. 根据权利要求3所述的液晶显示器，其中，所述量子点层包括至少能够被所述第一偏振蓝光、第二偏振蓝光或第三偏振蓝光中的一种激发而产生相应红光、绿光和蓝光的量子点。
  6. 根据权利要求5所述的液晶显示器，其中，所述量子点层包括能够分别被所述第一偏振蓝光、第二偏振蓝光和第三偏振蓝光激发而产生相应红光、绿光和蓝光的量子点。
  7. 根据权利要求6所述的液晶显示器，其中，所述量子点均匀分布在所述量子点层内。
  8. 根据权利要求4所述的液晶显示器，其中，所述量子点层包括至少能够被所述第一偏振蓝光、第二偏振蓝光或第三偏振蓝光中的一种激发而产生相应红光、绿光和蓝光的量子点。
  9. 根据权利要求8所述的液晶显示器，其中，所述量子点层包括能够分别 被所述第一偏振蓝光、第二偏振蓝光和第三偏振蓝光激发而产生相应红光、绿光和蓝光的量子点。
  10. 根据权利要求9所述的液晶显示器，其中，所述量子点均匀分布在所述量子点层内。
  11. 根据权利要求2所述的液晶显示器，其中，所述液晶显示面板还包括与所述彩膜基板相对设置的阵列基板，所述阵列基板的远离所述彩膜基板的一面设置有第一偏光片，所述彩膜基板上的远离所述阵列基板的一面设置有第二偏光片，并且所述第一偏光片的透光轴与所述第二偏光片的透光轴垂直。
  12. 根据权利要求11所述的液晶显示器，其中，所述第一偏光片的偏光角度为60度，所述第二偏光片的偏光角度为150度。
  13. 根据权利要求11所述的液晶显示器，其中，所述彩膜基板与所述阵列基板之间设置有液晶层，所述液晶层由蓝相液晶形成。
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