WO2016201736A1 - Affichage à cristaux liquides - Google Patents

Affichage à cristaux liquides 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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WO
WIPO (PCT)
Prior art keywords
liquid crystal
blue light
crystal display
light
polarized
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/CN2015/083126
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English (en)
Chinese (zh)
Inventor
徐向阳
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.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen 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 filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Publication of WO2016201736A1 publication Critical patent/WO2016201736A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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)
  • Optical Filters (AREA)

Abstract

L'invention concerne un affichage à cristaux liquides (100) qui comprend : une source de rétroéclairage bleu (10) ; un panneau (90) d'affichage à cristaux liquides, servant à recevoir la lumière de la source de rétroéclairage bleu (10) et à émettre de la lumière bleue polarisée ; et une couche de points quantiques (70), des points quantiques dans la couche de points quantiques (70) pouvant être stimulés par la lumière bleue polarisée afin de former de la lumière naturelle. Une image formée par la lumière naturelle présente un angle visuel plus large et convient mieux à la structure physiologique des yeux humains, et par conséquent les yeux humains ressentent un meilleur confort d'utilisation. En outre, l'affichage à cristaux liquides (100) présente une luminosité supérieure et un affichage de gamme de couleurs plus large.
PCT/CN2015/083126 2015-06-19 2015-07-02 Affichage à cristaux liquides Ceased WO2016201736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510344859.9 2015-06-19
CN201510344859.9A CN104865751B (zh) 2015-06-19 2015-06-19 液晶显示器

Publications (1)

Publication Number Publication Date
WO2016201736A1 true WO2016201736A1 (fr) 2016-12-22

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PCT/CN2015/083126 Ceased WO2016201736A1 (fr) 2015-06-19 2015-07-02 Affichage à cristaux liquides

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WO (1) WO2016201736A1 (fr)

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CN114721191A (zh) * 2021-01-06 2022-07-08 京东方科技集团股份有限公司 显示面板及其制作方法、显示模组、显示装置
CN114815366A (zh) * 2021-01-29 2022-07-29 合肥京东方光电科技有限公司 反射式显示面板及显示装置

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KR102504125B1 (ko) * 2015-10-13 2023-02-28 삼성디스플레이 주식회사 편광 선택 컬러 필터 및 이를 구비하는 표시 장치
CN106652925B (zh) * 2015-10-29 2021-01-15 海信视像科技股份有限公司 一种图像处理方法及液晶显示器
CN108089384A (zh) * 2016-11-21 2018-05-29 群创光电股份有限公司 显示装置
CN109298564B (zh) * 2018-11-09 2022-02-08 京东方科技集团股份有限公司 显示装置
CN112987160A (zh) * 2021-02-03 2021-06-18 武汉华星光电技术有限公司 偏光材料、偏光片、显示面板

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Publication number Priority date Publication date Assignee Title
CN114721191A (zh) * 2021-01-06 2022-07-08 京东方科技集团股份有限公司 显示面板及其制作方法、显示模组、显示装置
CN114721191B (zh) * 2021-01-06 2024-05-14 京东方科技集团股份有限公司 显示面板及其制作方法、显示模组、显示装置
CN114815366A (zh) * 2021-01-29 2022-07-29 合肥京东方光电科技有限公司 反射式显示面板及显示装置
CN114815366B (zh) * 2021-01-29 2024-01-16 合肥京东方光电科技有限公司 反射式显示面板及显示装置

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