[go: up one dir, main page]

WO2017031791A1 - 液晶显示器 - Google Patents

液晶显示器 Download PDF

Info

Publication number
WO2017031791A1
WO2017031791A1 PCT/CN2015/089265 CN2015089265W WO2017031791A1 WO 2017031791 A1 WO2017031791 A1 WO 2017031791A1 CN 2015089265 W CN2015089265 W CN 2015089265W WO 2017031791 A1 WO2017031791 A1 WO 2017031791A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
layer
black matrix
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/089265
Other languages
English (en)
French (fr)
Inventor
梁宇恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/897,832 priority Critical patent/US20180157123A1/en
Publication of WO2017031791A1 publication Critical patent/WO2017031791A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • 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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • 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
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer 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
    • 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
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell 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
    • G02F1/133—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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Definitions

  • the invention belongs to the technical field of liquid crystal display, and in particular relates to a liquid crystal display.
  • Quantum Dots refer to semiconductor grains with a particle size of 1-100 nm. Since the particle size of QDs is smaller or closer to the exciton Bohr radius of the corresponding bulk material, a quantum confinement effect is produced. The order structure changes from quasi-continuous of bulk material to discrete structure of quantum dot material, resulting in QDs exhibiting special stimulated radiation luminescence properties. Quantum dots have the advantages of controllable wavelength of light emission and half width and width.
  • the use of blue light to excite QDs of different illuminating wavelengths to replace the color filters in the current liquid crystal display can improve the color gamut of the liquid crystal display by solving the defect of the spectral distribution of the light generated by the blue phosphor to excite the yellow phosphor.
  • the QDs replace the color filter
  • the polarized light reaching the QDs is excited and no longer has the effect of linear polarization, that is, the polarization of the incident light.
  • the state disappears, resulting in the disappearance of the light valve function of the liquid crystal and the polarizer during the display application, and the display cannot be displayed normally.
  • the color filter formed by the QDs is usually disposed outside the liquid crystal display. This arrangement does not take into account the contrast drop of the liquid crystal display caused by the excitation of the external ambient light to the QDs, and the chromaticity shift, etc. problem.
  • the present invention provides a liquid crystal display.
  • a liquid crystal display according to the present invention includes a liquid crystal display panel including an upper substrate and a lower substrate disposed opposite to each other, and a liquid crystal layer disposed between the upper substrate and the lower substrate. among them, A lower polarizing layer is disposed on one surface of the lower substrate facing the liquid crystal layer, and a quantum dot color film layer is disposed between the lower polarizing layer and the lower substrate.
  • the invention places the quantum dot color film layer between the lower polarizing layer and the lower substrate, so that the incident light emitted by the backlight first passes through the quantum dot color film layer and then enters the liquid crystal layer through the lower polarizing layer, and the setting makes the incident light first.
  • the quantum dot color film layer is excited to form light of a corresponding color, and the formed light of the corresponding color enters the lower polarizing layer to form polarized light of a corresponding color, and the polarized light passes through the liquid crystal layer to realize normal display of the liquid crystal display.
  • the liquid crystal display of the invention overcomes the defect that the incident light emitted by the backlight first passes through the polarizing layer and then excites the color filter film to cause the polarization state of the incident light to disappear.
  • the quantum dot color film layer is used to improve The color gamut and contrast of the liquid crystal display, on the other hand, the liquid crystal display has a better display effect by setting the position of the quantum dot color film layer.
  • the quantum dot color film layer includes red sub-pixel units, green sub-pixel units, and transparent units disposed in sequence, each of the red sub-pixel units and the green sub-pixel unit respectively being capable of being excited by blue light to generate corresponding red light and Green light quantum dots, transparent units for direct transmission of blue light.
  • the arrangement of the quantum dot color film layer can realize the three-pixel display of the quantum dot color film layer by the blue backlight, that is, the three-pixel display of red, green and blue.
  • portions of the corresponding red sub-pixel unit and green sub-pixel unit of the quantum dot color film layer are covered with a blue filter layer.
  • the quantum dot color film layer includes red sub-pixel units, green sub-pixel units, and blue sub-pixel units that are sequentially disposed, and each of the red sub-pixel units, the green sub-pixel unit, and the blue sub-pixel unit includes A quantum dot that is excited by ultraviolet light to produce red, green, and blue light.
  • the setting can realize the red, green and blue three-pixel display of the quantum dot color film layer by the ultraviolet light backlight. Since each sub-pixel unit is formed by the corresponding quantum dot, the quantum dot color film layer excited by the ultraviolet light backlight emits light. The properties are similar and more uniform, thus achieving a better picture display of the liquid crystal display.
  • a first black matrix is formed between adjacent sub-pixel units.
  • the setting of the first black matrix is used to occlude the control lines in the control circuit layer to prevent the control lines from affecting the screen display of the liquid crystal display.
  • a side of the upper substrate facing the liquid crystal layer is provided with a second black matrix, and the second black matrix at least partially corresponds to the first black matrix.
  • the setting of the second black matrix can be used to enhance the resistance of the liquid crystal display The ability to interfere with light can significantly improve the contrast of the image and make the color of the picture look more vivid.
  • the upper polarizing layer is disposed on a side of the upper substrate that faces away from the liquid crystal layer.
  • the arrangement can simplify the fixed assembly of the upper polarizing layer, and on the other hand, the upper polarizing layer cooperates with the lower polarizing layer disposed on the lower substrate, so that the ambient light outside is sequentially passed through the upper polarizing layer, the liquid crystal layer, and the lower polarizing layer.
  • the light valve of the polarizing layer is blocked by the action of the light valve and cannot reach the quantum dot color film layer, thereby avoiding the problem that the external ambient light stimulates the quantum dot color film layer and causes the chromaticity shift of the liquid crystal display, thereby improving the liquid crystal display.
  • the contrast ratio achieves a better display effect of the liquid crystal display.
  • the polarizing directions of the upper polarizing layer and the lower polarizing layer are perpendicular or parallel to each other.
  • the polarizing direction of the upper polarizing layer and the lower polarizing layer are perpendicular to each other to realize a constant dark mode of the liquid crystal display; and the polarizing directions of the upper polarizing layer and the lower polarizing layer are parallel to each other to realize a constant light mode of the liquid crystal display.
  • a control electrode layer is further disposed between the lower substrate and the quantum dot color film layer.
  • the control electrode layer provides a driving voltage for the liquid crystal display for controlling the normal display of the liquid crystal display.
  • the liquid crystal display further includes a blue backlight or an ultraviolet backlight.
  • the liquid crystal display of the present invention overcomes the defect that the incident light emitted by the backlight first passes through the polarizing layer and then excites the color filter film to cause the polarization state of the incident light to disappear, thereby further improving the liquid crystal.
  • the liquid crystal display of the present invention performs different three-pixel design on the quantum dot color film layer, thereby improving the color gamut and contrast of the liquid crystal display;
  • the arrangement of the second black matrix in the liquid crystal display of the present invention can be used to enhance the ability of the liquid crystal display to resist external light interference, can significantly improve the contrast of the image, and make the color of the liquid crystal display look more vivid.
  • FIG. 1 is a schematic structural view of a first embodiment of a liquid crystal display according to the present invention.
  • FIG. 2 is a schematic structural view of a second embodiment of a liquid crystal display according to the present invention.
  • Figure 3 is a schematic view showing the structure of a third embodiment of a liquid crystal display according to the present invention.
  • the liquid crystal display 100 includes a liquid crystal display panel including an upper substrate 10 and a lower substrate 20 which are disposed opposite to each other, and a liquid crystal layer 60 disposed between the upper substrate 10 and the lower substrate 20.
  • the lower substrate 20 is provided with a lower polarizing layer 40 on one surface of the liquid crystal layer 60, and a quantum dot color film layer 50 is disposed between the lower polarizing layer 40 and the lower substrate 20.
  • the quantum dot color film layer 50 is disposed between the lower polarizing layer 40 and the lower substrate 20, so that the incident light emitted by the backlight 80 can pass through the quantum dot color film layer 50 before entering the liquid crystal layer 60 through the lower polarizing layer 40.
  • the arrangement causes the incident light to first excite the quantum dot color film layer 50 to form light of a corresponding color, and the formed light of the corresponding color enters the lower polarizing layer 40 to form polarized light of a corresponding color, and the polarized light passes through the liquid crystal layer 60 and
  • the normal display of the liquid crystal display 100 can be achieved after the polarizing layer 30.
  • the invention overcomes the defect that the incident light emitted by the backlight first passes through the polarizing layer and then excites the color filter film to cause the polarization state of the incident light to disappear.
  • the quantum dot color film layer 50 is used to improve the liquid crystal display.
  • the color gamut and contrast of 100 on the other hand, the liquid crystal display 100 has a better display effect by setting the position of the quantum dot color film layer 50.
  • the backlight 80 can employ blue light or ultraviolet light.
  • the quantum dot color film layer 50 includes a red sub-pixel unit 51, a green sub-pixel unit 52, and a transparent unit 53, which are sequentially disposed, and each of the red sub-pixel unit 51 and the green sub-pixel unit 52 includes A quantum dot capable of being excited by blue light to generate corresponding red and green light, and the transparent unit 53 is used to directly transmit blue light.
  • the backlight 80 adopts blue light, and the quantum dot color film layer 50 is disposed in a three-pixel display of the quantum dot color film layer by the blue backlight, that is, red, green, and blue three-pixel display.
  • portions of the corresponding red sub-pixel unit 51 and green sub-pixel unit 52 of the quantum dot color film layer 50 are covered with a blue filter layer 90.
  • blue light that is not used to excite the red sub-pixel unit 51 and the green sub-pixel unit 52 can be prevented from being filtered by the blue filter layer 90, that is, the red sub-pixel unit 51.
  • the green sub-pixel unit 52 passes only the monochromatic light of the corresponding color, thereby improving the chromaticity and contrast of the liquid crystal display 100.
  • the position of the transparent unit 53 is set to be a blue sub-pixel unit 53', and each of the red sub-pixel units 51 is provided.
  • the green sub-pixel unit 52 and the blue sub-pixel unit 53' respectively include quantum dots that are excited by ultraviolet light to generate corresponding red, green, and blue light.
  • the backlight 80 adopts ultraviolet light, and the scheme can realize the three-pixel display of the red, green and blue of the quantum dot color film layer 50 by the ultraviolet light backlight. Since each sub-pixel unit is formed by the corresponding quantum dots, it is UV-treated. The light-emitting property of the quantum dot color film layer 50 excited by the light backlight is similar and more uniform, thereby achieving a better picture display of the liquid crystal display 100.
  • the quantum dot material constituting each color sub-pixel unit may be selected from a group II-VI quantum dot material or a group I-III-VI quantum dot material, further preferably CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, ZnCuInS.
  • a group II-VI quantum dot material or a group I-III-VI quantum dot material, further preferably CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, ZnCuInS.
  • One or more of the quantum dot materials are selected from a group II-VI quantum dot material or a group I-III-VI quantum dot material, further preferably CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, ZnCuInS.
  • a first black matrix 54 is formed between adjacent sub-pixel units.
  • the setting of the first black matrix 54 is used to block the control lines in the control circuit layer 70 to prevent the control lines from affecting the screen display of the liquid crystal display 100.
  • the control electrode layer 70 supplies a driving voltage to the liquid crystal display 100 for controlling the normal display of the liquid crystal display 100.
  • the manner of setting the first black matrix 54 may be various.
  • the first black matrix 54 may also be disposed on the upper substrate 10. The area between adjacent sub-pixel units.
  • the upper substrate 10 is provided with a second black matrix 55 facing one side of the liquid crystal layer 60, and the second black matrix 55 corresponds at least partially to the first black matrix 54. Further preferably, the second black matrix 55 completely corresponds to the first black matrix 54.
  • the arrangement of the second black matrix 55 can be used to enhance its ability to withstand external light interference, can significantly improve the contrast of the image, and make the picture color look more vivid.
  • the upper polarizing layer 30 is disposed on the side of the upper substrate 10 facing away from the liquid crystal layer 60.
  • This arrangement simplifies the fixed assembly of the upper polarizing layer 30 on the one hand, and cooperates with the lower polarizing layer 40 disposed on the lower substrate 20 on the other hand, so that the ambient light of the outside passes through the upper polarizing layer 30, the liquid crystal layer 60, and the lower polarized light in this order.
  • the layer 40 is blocked by the light valve function of the polarizing layer and cannot reach the quantum dot color film layer 50, the external ambient light is prevented from exciting the quantum dot color film layer 50, resulting in chromaticity shift of the liquid crystal display 100, and the like.
  • the problem is that the contrast of the liquid crystal display 100 is improved, and the liquid crystal display 100 is better displayed.
  • the polarization directions of the upper polarizing layer 30 and the lower polarizing layer 40 are perpendicular or parallel to each other.
  • Upper bias The polarization directions of the light layer 30 and the lower polarizing layer 40 are perpendicular to each other to achieve a constant dark mode of the liquid crystal display 100; the polarizing directions of the upper polarizing layer 30 and the lower polarizing layer 40 are parallel to each other to realize a constant light mode of the liquid crystal display 100.

Landscapes

  • 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)

Abstract

一种液晶显示器(100)，包括液晶显示面板，液晶显示面板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)之间的液晶层(60)。其中，下基板(20)朝向液晶层(60)的一面设置有下偏光层(40)，下偏光层(40)与下基板(20)之间设置有量子点彩膜层(50)。液晶显示器(100)具有更高的色域和对比度，能够实现更好的画面显示。

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8月27日提交的名称为“液晶显示器”的中国专利申请CN201510534224.5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
量子点材料(Quantum Dots，简称QDs)是指粒径在1-100nm的半导体晶粒，由于QDs的粒径尺寸小于或者接近相应体材料的激子波尔半径，产生量子限域效应，其能级结构从体材料的准连续变为量子点材料的离散结构，导致QDs展示出特殊的受激辐射发光的性能。量子点拥有发光波长可控，半高宽窄的优点。目前，使用蓝光激发不同发光波长的QDs替代目前液晶显示器内的彩色滤光片，可以通过解决蓝光背光源激发黄色荧光粉所产生的光在光谱分布上的缺陷来提高液晶显示器的色域。
然而，在现有的液晶显示器中，当QDs替代彩色滤光片时，由于入射光首先经过偏振片到达QDs，到达QDs的偏振光被激发以后不再具有线偏振的效果，即入射光的偏振态消失，从而导致在显示器应用过程中，液晶及偏光片的光阀作用消失，显示器不能正常显示。另外，现有的液晶显示器中还通常将QDs形成的彩色滤光片设置在液晶显示器的外侧，此种设置没有考虑外部环境光对QDs的激发所导致的液晶显示器对比下降以及色度偏移等问题。
发明内容
为了进一步提高液晶显示器的对比度，使液晶显示器具有更好的显示效果，本发明提供了一种液晶显示器。
根据本发明提供的一种液晶显示器，包括液晶显示面板，液晶显示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液晶层。其中， 下基板朝向液晶层的一面设置有下偏光层，下偏光层与下基板之间设置有量子点彩膜层。
本发明将量子点彩膜层设置在下偏光层与下基板之间，可使由背光源发出的入射光首先经过量子点彩膜层后才通过下偏光层进入液晶层，该设置使入射光首先激发量子点彩膜层形成相应颜色的光，而形成的该相应颜色的光进入下偏光层后形成相应颜色的偏振光，这些偏振光经过液晶层后实现液晶显示器的正常显示。与现有技术相比，本发明的液晶显示器克服了背光源发出的入射光首先经过偏光层再激发彩色滤光膜而致使入射光偏振态消失的缺陷，一方面采用量子点彩膜层来提高液晶显示器的色域和对比度，另一方面通过设定量子点彩膜层的位置来使液晶显示器具有更好的显示效果。
在一些实施方案中，量子点彩膜层包括依次设置的红色子像素单元、绿色子像素单元和透明单元，各红色子像素单元和绿色子像素单元分别包括能够被蓝光激发而产生相应红光和绿光的量子点，透明单元用于直接透过蓝光。该量子点彩膜层的设置方式可通过蓝光背光实现量子点彩膜层的三像素显示，即红、绿、蓝三像素显示。
在一些实施方案中，量子点彩膜层的对应红色子像素单元和绿色子像素单元的部分均覆盖有蓝色滤光层。通过这种设置可防止未用于激发红色子像素单元和绿色子像素单元的蓝光被蓝色滤光层过滤掉，即红色子像素单元和绿色子像素单元处仅通过相应颜色的单色光，从而提高液晶显示器的色度及对比度。
在一些实施方案中，量子点彩膜层包括依次设置的红色子像素单元、绿色子像素单元和蓝色子像素单元，各红色子像素单元、绿色子像素单元和蓝色子像素单元分别包括能够被紫外光激发而产生相应红光、绿光和蓝光的量子点。该设置可通过紫外光背光实现量子点彩膜层的红、绿、蓝三像素显示，由于各个子像素单元均由相应的量子点形成，因而被紫外光背光激发的量子点彩膜层的出光性质相似并更加均匀，从而实现了液晶显示器更好的画面显示。
在一些实施方案中，相邻子像素单元之间形成有第一黑矩阵。第一黑矩阵的设置用于遮挡控制电路层中的控制线，以避免控制线影响液晶显示器的画面显示。
在一些实施方案中，上基板朝向液晶层的一面设置有第二黑矩阵，第二黑矩阵至少部分与第一黑矩阵相对应。第二黑矩阵的设置可用于增强液晶显示器抗外 界光线干扰的能力，可以显著改善图像的对比度，使画面色彩看起来更鲜艳。
在一些实施方案中，上偏光层设置在上基板的背离液晶层的一面。该设置一方面可简化上偏光层的固定装配，另一方面上偏光层与设置在下基板上的下偏光层相配合，使外界的环境光依次经过上偏光层、液晶层、下偏光层后被偏光层的光阀作用所阻挡而不能到达量子点彩膜层，这便避免了外界的环境光对量子点彩膜层的激发而导致液晶显示器出现色度偏移等问题，从而提高了液晶显示器的对比度，实现了液晶显示器更好的显示效果。
在一些实施方案中，上偏光层与下偏光层的偏光方向相互垂直或平行。上偏光层与下偏光层的偏光方向相互垂直可实现液晶显示器的常暗模式；上偏光层与下偏光层的偏光方向相互平行可实现液晶显示器的常亮模式。
在一些实施方案中，下基板与量子点彩膜层之间还设置有控制电极层。控制电极层为液晶显示器提供驱动电压，用于控制液晶显示器的正常显示。
在一些实施方案中，液晶显示器还包括蓝光背光源或紫外光背光源。
与现有技术相比，本发明具有以下优点：
1)本发明的液晶显示器通过设置量子点彩膜层的位置，克服了背光源发出的入射光首先经过偏光层再激发彩色滤光膜而致使入射光偏振态消失的缺陷，从而进一步提高了液晶显示器的对比度；
2)本发明的液晶显示器对量子点彩膜层进行了不同的三像素设计，从而提高了液晶显示器的色域和对比度；
3)本发明的液晶显示器中第二黑矩阵的设置可使用于增强液晶显示器抗外界光线干扰的能力，可以显著改善图像的对比度，使液晶显示器的画面色彩看起来更鲜艳。
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第一实施例的结构示意图；
图2是根据本发明的液晶显示器的第二实施例的结构示意图；
图3是根据本发明的液晶显示器的第三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液晶显示器100的第一实施例的结构示意图。如图1所示，液晶显示器100包括液晶显示面板，液晶显示面板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之间的液晶层60。其中，下基板20朝向液晶层60的一面设置有下偏光层40，下偏光层40与下基板20之间设置有量子点彩膜层50。
本发明将量子点彩膜层50设置在下偏光层40与下基板20之间，可使由背光源80发出的入射光首先经过量子点彩膜层50后才通过下偏光层40进入液晶层60，该设置使入射光首先激发量子点彩膜层50形成相应颜色的光，而形成的该相应颜色的光进入下偏光层40后形成相应颜色的偏振光，这些偏振光经过液晶层60、上偏光层30后可实现液晶显示器100的正常显示。与现有技术相比，本发明克服了背光源发出的入射光首先经过偏光层再激发彩色滤光膜而致使入射光偏振态消失的缺陷，一方面采用量子点彩膜层50来提高液晶显示器100的色域和对比度，另一方面通过设置量子点彩膜层50的位置来使液晶显示器100具有更好的显示效果。
根据本发明，背光源80可采用蓝光或紫外光。如图1所示的实施例中，量子点彩膜层50包括依次设置的红色子像素单元51、绿色子像素单元52和透明单元53，各红色子像素单元51和绿色子像素单元52分别包括能够被蓝光激发而产生相应红光和绿光的量子点，透明单元53用于直接透过蓝光。此时背光源80采用蓝光，该量子点彩膜层50的设置方式可通过蓝光背光实现量子点彩膜层的三像素显示，即红、绿、蓝三像素显示。
优选地，量子点彩膜层50的对应红色子像素单元51和绿色子像素单元52的部分均覆盖有蓝色滤光层90。通过这种设置可防止未用于激发红色子像素单元51和绿色子像素单元52的蓝光被蓝色滤光层90过滤掉，即红色子像素单元51 和绿色子像素单元52处仅通过相应颜色的单色光，从而提高液晶显示器100的色度及对比度。
根据本发明，如图2所示的实施例中，与图1所示的实施例的不同之处在于，透明单元53的位置处设置成蓝色子像素单元53’，各红色子像素单元51、绿色子像素单元52和蓝色子像素单元53’分别包括能够被紫外光激发而产生相应红光、绿光和蓝光的量子点。该方案中背光源80采用紫外光，该方案可通过紫外光背光实现量子点彩膜层50的红、绿、蓝三像素显示，由于各个子像素单元均由相应的量子点形成，因而被紫外光背光激发的量子点彩膜层50的出光性质相似并更加均匀，从而实现了液晶显示器100更好的画面显示。
优选地，组成各颜色子像素单元的量子点材料可选自Ⅱ-Ⅵ族量子点材料或Ⅰ-Ⅲ-Ⅵ族量子点材料，进一步优选为CdSe，CdS，CdTe，ZnS，ZnSe，CuInS，ZnCuInS等量子点材料的一种或多种。
根据本发明，如图1所示，相邻子像素单元之间形成有第一黑矩阵54。第一黑矩阵54的设置用于遮挡控制电路层70中的控制线，以避免控制线影响液晶显示器100的画面显示。控制电极层70为液晶显示器100提供驱动电压，用于控制液晶显示器100的正常显示。可以理解的是，只要保证第一黑矩阵54自身的作用，其设置方式可以为多种，例如在如图2所示的实施例中，第一黑矩阵54还可设置在上基板10的对应相邻子像素单元之间的区域。
还优选地，在如图3所示的实施例中，上基板10朝向液晶层60的一面设置有第二黑矩阵55，第二黑矩阵55至少部分与第一黑矩阵54相对应。进一步优选地，第二黑矩阵55与第一黑矩阵54完全相对应。第二黑矩阵55的设置可用于增强其抗外界光线干扰的能力，可以显著改善图像的对比度，使画面色彩看起来更鲜艳。
回到图1，上偏光层30设置在上基板10的背离液晶层60的一面。该设置一方面可简化上偏光层30的固定装配，另一方面其与设置在下基板20上的下偏光层40相配合，使外界的环境光依次经过上偏光层30、液晶层60、下偏光层40后被偏光层的光阀作用所阻挡而不能到达量子点彩膜层50，这便避免了外界的环境光对量子点彩膜层50的激发而导致液晶显示器100出现色度偏移等问题，从而提高了液晶显示器100的对比度，实现了液晶显示器100更好的显示效果。
根据本发明，上偏光层30与下偏光层40的偏光方向相互垂直或平行。上偏 光层30与下偏光层40的偏光方向相互垂直可实现液晶显示器100的常暗模式；上偏光层30与下偏光层40的偏光方向相互平行可实现液晶显示器100的常亮模式。
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 (14)

  1. 一种液晶显示器，包括液晶显示面板，所述液晶显示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液晶层，其中，所述下基板朝向所述液晶层的一面设置有下偏光层，所述下偏光层与所述下基板之间设置有量子点彩膜层。
  2. 根据权利要求1所述的液晶显示器，其中，所述量子点彩膜层包括依次设置的红色子像素单元、绿色子像素单元和透明单元，各所述红色子像素单元和所述绿色子像素单元分别包括能够被蓝光激发而产生相应红光和绿光的量子点，所述透明单元用于直接透过蓝光。
  3. 根据权利要求2所述的液晶显示器，其中，所述量子点彩膜层的对应所述红色子像素单元和所述绿色子像素单元的部分均覆盖有蓝色滤光层。
  4. 根据权利要求1所述的液晶显示器，其中，所述量子点彩膜层包括依次设置的红色子像素单元、绿色子像素单元和蓝色子像素单元，各所述红色子像素单元、所述绿色子像素单元和所述蓝色子像素单元分别包括能够被紫外光激发而产生相应红光、绿光和蓝光的量子点。
  5. 根据权利要求2所述的液晶显示器，其中，相邻所述单元之间形成有第一黑矩阵。
  6. 根据权利要求5所述的液晶显示器，其中，所述上基板朝向所述液晶层的一面设置有第二黑矩阵，所述第二黑矩阵至少部分与所述第一黑矩阵相对应。
  7. 根据权利要求3所述的液晶显示器，其中，相邻所述单元之间形成有第一黑矩阵。
  8. 根据权利要求7所述的液晶显示器，其中，所述上基板朝向所述液晶层的一面设置有第二黑矩阵，所述第二黑矩阵至少部分与所述第一黑矩阵相对应。
  9. 根据权利要求4所述的液晶显示器，其中，相邻所述单元之间形成有第一黑矩阵。
  10. 根据权利要求9所述的液晶显示器，其中，所述上基板朝向所述液晶层的一面设置有第二黑矩阵，所述第二黑矩阵至少部分与所述第一黑矩阵相对应。
  11. 根据权利要求1所述的液晶显示器，其中，所述上基板的背离所述液晶层的一面设置有上偏光层。
  12. 根据权利要求11所述的液晶显示器，其中，所述上偏光层与所述下偏光层的偏光方向相互垂直或平行。
  13. 根据权利要求1所述的液晶显示器，其中，所述下基板与所述量子点彩膜层之间还设置有控制电极层。
  14. 根据权利要求1所述的液晶显示器，其中，所述液晶显示器还包括蓝光背光源或紫外光背光源。
PCT/CN2015/089265 2015-08-27 2015-09-09 液晶显示器 Ceased WO2017031791A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/897,832 US20180157123A1 (en) 2015-08-27 2015-09-09 Liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510534224.5A CN105044985A (zh) 2015-08-27 2015-08-27 液晶显示器
CN201510534224.5 2015-08-27

Publications (1)

Publication Number Publication Date
WO2017031791A1 true WO2017031791A1 (zh) 2017-03-02

Family

ID=54451640

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/089265 Ceased WO2017031791A1 (zh) 2015-08-27 2015-09-09 液晶显示器

Country Status (3)

Country Link
US (1) US20180157123A1 (zh)
CN (1) CN105044985A (zh)
WO (1) WO2017031791A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106680925A (zh) * 2017-03-15 2017-05-17 京东方科技集团股份有限公司 偏光片及显示装置
KR102282060B1 (ko) * 2017-05-23 2021-07-27 삼성디스플레이 주식회사 표시 장치 및 그 제조 방법
CN109143665B (zh) * 2018-09-13 2021-03-02 京东方科技集团股份有限公司 一种显示面板及显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103412435A (zh) * 2013-07-24 2013-11-27 北京京东方光电科技有限公司 一种液晶显示屏及显示装置
US20140204128A1 (en) * 2013-01-18 2014-07-24 Motorola Mobility Llc Liquid crystal display with photo-luminescent material layer
WO2015012260A1 (ja) * 2013-07-22 2015-01-29 富士フイルム株式会社 液晶表示装置
CN104330918A (zh) * 2014-11-28 2015-02-04 京东方科技集团股份有限公司 一种显示面板和显示装置
CN104360536A (zh) * 2014-10-29 2015-02-18 京东方科技集团股份有限公司 显示面板和显示装置
CN104516039A (zh) * 2014-12-23 2015-04-15 深圳市华星光电技术有限公司 量子点彩色滤光片的制作方法及液晶显示装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0816557D0 (en) * 2008-09-10 2008-10-15 Merck Patent Gmbh Electro-optical switching element and electro-optical display
CN102944943B (zh) * 2012-11-09 2016-03-16 京东方科技集团股份有限公司 量子点彩色滤光片、液晶面板及显示装置
CN103278876A (zh) * 2013-05-28 2013-09-04 京东方科技集团股份有限公司 量子点彩色滤光片及其制作方法、显示装置
CN104698674B (zh) * 2015-03-30 2017-08-29 京东方科技集团股份有限公司 一种显示面板和显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140204128A1 (en) * 2013-01-18 2014-07-24 Motorola Mobility Llc Liquid crystal display with photo-luminescent material layer
WO2015012260A1 (ja) * 2013-07-22 2015-01-29 富士フイルム株式会社 液晶表示装置
CN103412435A (zh) * 2013-07-24 2013-11-27 北京京东方光电科技有限公司 一种液晶显示屏及显示装置
CN104360536A (zh) * 2014-10-29 2015-02-18 京东方科技集团股份有限公司 显示面板和显示装置
CN104330918A (zh) * 2014-11-28 2015-02-04 京东方科技集团股份有限公司 一种显示面板和显示装置
CN104516039A (zh) * 2014-12-23 2015-04-15 深圳市华星光电技术有限公司 量子点彩色滤光片的制作方法及液晶显示装置

Also Published As

Publication number Publication date
US20180157123A1 (en) 2018-06-07
CN105044985A (zh) 2015-11-11

Similar Documents

Publication Publication Date Title
US10386673B2 (en) Liquid crystal display device and liquid crystal display module thereof
CN104145210B (zh) 光致发光彩色显示器
US7746423B2 (en) Photo-luminescent liquid crystal display including a blue dichroic mirror layer
TWI574055B (zh) 顯示面板
US8675167B2 (en) Polymer dispersed display panels including quantum dots and display apparatuses including the same
KR100745751B1 (ko) 자발광 ｌｃｄ
US20170255055A1 (en) Quantum dot liquid crystal display device
WO2017092131A1 (zh) 彩膜基板的制作方法及液晶显示装置
WO2017041345A1 (zh) 液晶显示器
US9964804B2 (en) Display device comprising a plurality of reflector units located between a quantum dot film and a display panel
CN107250906A (zh) 光致发光彩色显示器
CN105097879A (zh) 一种显示面板
TW201624688A (zh) 顯示面板
WO2017045236A1 (zh) 液晶显示装置
TW201616191A (zh) 顯示裝置
CN103680420A (zh) 显示器
WO2019019560A1 (zh) 显示面板及显示装置
CN106773281A (zh) 显示器
WO2016201736A1 (zh) 液晶显示器
WO2017031791A1 (zh) 液晶显示器
CN111290160A (zh) 一种显示结构和显示装置
CN108345138B (zh) 一种显示装置及显示方法
WO2018126699A1 (zh) 彩膜基板、阵列基板、显示装置及显示装置的控制方法
WO2017031789A1 (zh) 液晶显示面板和液晶显示装置
JP2020534560A5 (zh)

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14897832

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15902062

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15902062

Country of ref document: EP

Kind code of ref document: A1