WO2017024600A1 - 液晶显示器及其液晶显示模组 - Google Patents

液晶显示器及其液晶显示模组 Download PDF

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Publication number
WO2017024600A1
WO2017024600A1 PCT/CN2015/087004 CN2015087004W WO2017024600A1 WO 2017024600 A1 WO2017024600 A1 WO 2017024600A1 CN 2015087004 W CN2015087004 W CN 2015087004W WO 2017024600 A1 WO2017024600 A1 WO 2017024600A1
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Prior art keywords
liquid crystal
crystal display
quantum rod
rod film
light
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PCT/CN2015/087004
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English (en)
French (fr)
Inventor
樊勇
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深圳市华星光电技术有限公司
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Priority to US14/777,824 priority Critical patent/US10386673B2/en
Publication of WO2017024600A1 publication Critical patent/WO2017024600A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the 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
    • G02F1/1336—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
    • G02F1/1336—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
    • G02F1/13362—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
    • G02F1/133—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
    • G02F1/133548—Wire-grid polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Definitions

  • the present invention relates to the technical field of liquid crystal display, and in particular to a liquid crystal display and a liquid crystal display module thereof.
  • Quantum dot Dots is a nanoparticle with a size of only 1-20 nm due to PL (photoluminescence of quantum dots)
  • Photoluminescence the so-called photoluminescence, refers to the process in which light is used as an excitation means to excite electrons in a material to effect illumination. It is a concomitant phenomenon in the composite process of photogenerated extra carrier pairs.
  • the spectrum has FWHM (full Width at half maximum
  • the half-height width also known as the half-width, refers to the characteristic that the full width of the band at the height of the maximum height of the absorption band is half, that is, the width of the transmission peak at half the peak height is narrow, and the peak wavelength WL of the light emission is Wave Length) can be adjusted according to the size of the quantum dot.
  • Quantum dots have such characteristics, quantum dots are used as a light source in the display field, which can achieve extremely high color saturation and make the displayed colors more beautiful. Therefore, in recent years, quantum dots (Quantum Dots) technology has been widely used in backlights in liquid crystal displays. However, since the quantum dots absorb blue polarized light, the emitted light has almost no polarization.
  • Figure 1. 1 is a schematic diagram of the depolarization characteristics of a quantum dot.
  • reference numeral 101 denotes a quantum dot
  • 102 denotes a linearly polarized blue light
  • 103 denotes a non-linearly polarized quantum dot emitted light passing through a quantum dot.
  • Embodiments of the present invention provide a liquid crystal display and a liquid crystal display module thereof, which solve the technical problem of depolarization characteristics and complicated structure of a liquid crystal display device when a quantum dot is used as a material of a liquid crystal display device in the prior art.
  • an embodiment of the present invention provides a liquid crystal display module, which includes a backlight unit, a liquid crystal display panel, and a quantum rod film disposed between the backlight unit and the liquid crystal display panel.
  • the liquid crystal display panel includes: an upper substrate, a lower substrate, and an upper polarizer; a liquid crystal body is filled between the upper substrate and the lower substrate; and the upper polarizer is disposed outside the upper substrate, that is, The light-emitting side of the liquid crystal display panel; wherein the quantum rod film is specifically disposed between the lower substrate and the backlight unit.
  • the backlight unit provides a blue backlight.
  • the quantum rod film includes a red quantum quantum rod film region, a green light quantum rod film region, a transmission region, and a red light quantum rod film region, the green light quantum rod film And a polarizing layer on the upper surface or the lower surface of the transmissive region, wherein the quantum rod diameter of the red quantum rod film region and the green quantum rod film region are different.
  • the quantum rod film further includes a protective layer disposed on the red quantum rod film region, the green quantum rod film region, and upper and lower surfaces of the transmissive region.
  • the transmission axis of the polarizing layer is parallel to the long axis direction of the quantum rod of the red quantum rod film region and the green quantum rod film region so as to be different through the quantum rod film.
  • the light behind the light transmitting region has the same polarization direction.
  • the backlight unit provides a purple backlight.
  • the quantum rod film comprises a polarizing light emitting layer composed of three diameter quantum rod arrays and a protective layer provided on the upper and lower surfaces of the polarizing light emitting layer.
  • the liquid crystal display panel further includes a color filter film disposed on a lower surface of the upper substrate, and the upper substrate and/or the lower substrate is provided with a violet filter material or a violet light. Filter membrane.
  • the liquid crystal display panel further includes a plurality of spacers disposed between the upper and lower substrates, the spacers separating the liquid crystal into a plurality of regions, each of the The regions respectively correspond to a light transmissive region of the quantum rod film.
  • the present invention also provides a liquid crystal display comprising the liquid crystal display module described in the above embodiments.
  • the liquid crystal display and the liquid crystal display module thereof provided by the present invention achieve high liquid crystal display by replacing the conventional color filter (or the light-increasing component) and the lower polarizer with a quantum rod material capable of emitting polarized light.
  • the energy consumption is 1/3 of that of a conventional liquid crystal display, and the power consumption is extremely low, and since there is no lower polarizer and RGB.
  • the color filter layer (or the light-increasing component) completely replaces the lower polarizer and the RGB color filter layer (or the light-increasing component) with the quantum rod film, thereby saving components and processes, and achieving cost reduction.
  • the quantum rod film can excite polarized light, and emit polarized light of different wavelengths by adjusting the diameter of the quantum rod in the quantum rod film, thereby obtaining light of different colors to meet the display requirement of the liquid crystal display.
  • Figure 1 is a schematic diagram of the depolarization characteristics of quantum dots
  • FIG. 2 is a schematic diagram of a quantum rod excited polarized light
  • FIG. 3 is a schematic structural view of a first embodiment of a liquid crystal display module of the present invention.
  • Figure 4 is a front elevational view showing the structure of the quantum rod film in the embodiment of Figure 3;
  • Figure 5 is a cross-sectional view showing the structure of the quantum rod film of Figure 4.
  • FIG. 6 is a schematic structural view of a second embodiment of a liquid crystal display module of the present invention.
  • Figure 7 is a cross-sectional view showing the structure of the quantum rod film in the embodiment of Figure 6;
  • Figure 8 is a block diagram showing a preferred embodiment of a liquid crystal display of the present invention.
  • FIG. 2 is a schematic diagram of quantum rod excited polarized light, and the quantum rod is a one-dimensional quantum confinement nano material. Its luminescence property has similar characteristics to that of quantum dots, and its luminescence spectrum wavelength can be adjusted by the diameter of the quantum rod, and the FWHM of the luminescence spectrum (full Width at half maximum).
  • the full width at half maximum also known as the half width, means that the full width of the band at the height of the absorption band height is half, that is, the width of the transmission peak at half the height of the peak is as narrow as the quantum dot.
  • the biggest characteristic is that when blue light (whether natural light or polarized light) excites the quantum rod to emit light, the quantum rod emits polarized light (in the case of a single intrinsic luminescence) with extremely high polarization.
  • the direction of polarization is along the long diameter direction of the quantum rod, as shown in FIG.
  • 201 denotes a quantum rod
  • 202 denotes linearly polarized blue light
  • 203 denotes a polarized light whose vibration direction is along the long diameter direction of the quantum rod.
  • FIG. 3 is a schematic structural diagram of a first embodiment of a liquid crystal display module of the present invention.
  • the liquid crystal display module includes, but is not limited to, the following original components: a backlight unit 100, a liquid crystal display panel 200, and a quantum rod film 300 disposed between the backlight unit 100 and the liquid crystal display panel 200.
  • the liquid crystal display panel 200 includes an upper substrate 210, a lower substrate 220, and an upper polarizer 230.
  • the liquid crystal body 240 is filled between the upper substrate 210 and the lower substrate 220.
  • the upper polarizer 230 is disposed on the outer side of the upper substrate 210, that is, the light exiting side of the liquid crystal display panel 200.
  • the quantum rod film 300 is specifically disposed between the lower substrate 220 and the backlight unit 100.
  • the backlight unit 100 provides a backlight source, and the light passes through the quantum rod film 300 and enters the liquid crystal display panel 200 from the bottom of the lower substrate 220.
  • the backlight unit 100 provides a blue backlight.
  • the backlight unit 100 further includes a blue light 110 and a light guide 120 disposed on a side of the light guide 120. 111 in the figure indicates blue light emitted from the backlight unit 100.
  • FIG. 4 is a front view showing the structure of the quantum rod film in the embodiment of FIG. 3, and FIG. 5 is a cross-sectional view showing the structure of the quantum rod film in FIG.
  • the quantum rod film 300 includes a red quantum rod film region 301, a green quantum rod film region 302, and a transmission region 303 which are alternately spaced apart in this order.
  • the wavelength of the luminescence spectrum can be adjusted by the diameter of the quantum rod. Therefore, the diameters of the quantum rods of the red quantum rod film 301 region and the green quantum rod film region 302 are different, and then the blue rod illuminates the quantum rod film 300.
  • the red light quantum rod film region 301 and the green light quantum rod film region 302 can be obtained in two colors of red and green.
  • the blue light when the blue light is irradiated in the transmission region 303, it directly passes through the transmission region 303, so that the blue light illuminates the quantum rod film 300 to form red (R, red), green (G, green) and blue (B, blue). , three display the required color light.
  • the quantum rod film 300 further includes a polarizing layer 320 disposed on the upper surface or the lower surface of the red quantum rod film region 301, the green quantum rod film region 302, and the transmissive region 303, and the transmission axis of the polarizing layer 320 and the red light quantum
  • the long axis directions of the quantum rods of the rod film region 301 and the green quantum rod film region 302 are parallel such that light passing through different light transmitting regions (or different light color regions) of the quantum rod film 300 has the same polarization direction.
  • the quantum rod film 300 further includes a protective layer 310 disposed on the upper and lower surfaces of the red quantum rod film region 301, the green quantum rod film region 302, and the transmissive region 303.
  • the protective layer 310 has the function of blocking water and blocking oxygen to prevent the quantum rod from being oxidized and rapidly decaying in life.
  • the liquid crystal display panel 200 further includes a plurality of isolation pillars 260 disposed between the upper substrate 210 and the lower substrate 220.
  • the isolation pillars 260 isolate the liquid crystals 240 into a plurality of regions, each of which is respectively Corresponding to a light transmissive region of the quantum rod film 300 (i.e., a transmissive region of color light) for achieving separate control of color light in different color regions.
  • the liquid crystal display panel 200 further includes a TFT (Thin Film). Transistor, thin film transistor 270, pixel electrode (not shown), and common electrode (not shown), etc., are some of the structural features of the present invention, and will not be further described herein.
  • TFT Thin Film
  • Transistor, thin film transistor 270, pixel electrode (not shown), and common electrode (not shown), etc. are some of the structural features of the present invention, and will not be further described herein.
  • the liquid crystal display module replaces the traditional color filter and the lower polarizer by using a quantum rod material capable of emitting polarized light, thereby achieving high color contrast, high color saturation, low power consumption and low of the liquid crystal display.
  • the purpose of the cost Theoretically, the energy consumption is 1/3 of that of a conventional liquid crystal display, and the power consumption is extremely low, and since there is no lower polarizer and RGB.
  • Color filter completely replaces the lower polarizer and RGB color filter layer with quantum rod film (Color Filter), saving components and processes, and achieving cost reduction.
  • the quantum rod film can excite polarized light, and emit polarized light of different wavelengths by adjusting the diameter of the quantum rod in the quantum rod film, thereby obtaining light of different colors, which satisfies the display requirement of the liquid crystal display.
  • FIG. 6 is a schematic structural diagram of a second embodiment of a liquid crystal display module of the present invention.
  • the liquid crystal display module also includes, but is not limited to, the following original components: a backlight unit 100, a liquid crystal display panel 200, and a quantum rod film 300 disposed between the backlight unit 100 and the liquid crystal display panel 200.
  • the liquid crystal display panel 200 includes an upper substrate 210, a lower substrate 220, and an upper polarizer 230.
  • the liquid crystal body 240 is filled between the upper substrate 210 and the lower substrate 220.
  • the upper polarizer 230 is disposed on the outer side of the upper substrate 210, that is, the light exiting side of the liquid crystal display panel 200.
  • the quantum rod film 300 is specifically disposed between the lower substrate 220 and the backlight unit 100.
  • the backlight unit 100 provides a backlight source, and the light passes through the quantum rod film 300 and enters the liquid crystal display panel 200 from the bottom of the lower substrate 220.
  • the backlight unit 100 provides a purple backlight.
  • the backlight unit 100 further includes a violet light 130 and a light guide plate 120 disposed on a side of the light guide plate 120.
  • Reference numeral 112 in the figure denotes purple light emitted from the backlight unit 100.
  • FIG. 7 is a cross-sectional view showing the structure of the quantum rod film in the embodiment of FIG. 6.
  • the quantum rod film 300 in this embodiment includes a polarized light emitting layer 350 composed of three diameter quantum rod arrays. According to the characteristics of the quantum rod, the wavelength of the light emitting spectrum can be adjusted by the diameter of the quantum rod. Therefore, the polarizing light emitting layer 350 is Three diameter quantum rods are arranged such that violet light is irradiated onto the quantum rod film 300 to emit mixed light composed of red, green and blue light.
  • the liquid crystal display panel 200 of this embodiment further includes a color filter film 250 disposed on the lower surface of the upper substrate 210.
  • the color filter film 250 is used to separate mixed light composed of red light, green light, and blue light emitted from the quantum rod film 300.
  • One or both of the upper substrate 210 and the lower substrate 220 are made of a violet filter material for the purpose of filtering out the violet light that is not absorbed by the quantum rod film 300, thereby achieving the purpose of protecting the human eye.
  • the quantum rod film 300 further includes a protective layer 360 disposed on the lower surface of the polarizing light-emitting layer 350.
  • the protective layer 360 has a function of blocking water and blocking oxygen to prevent the quantum rod from being oxidized and rapidly decaying in life. .
  • the liquid crystal display panel 200 further includes a plurality of isolation pillars 260 disposed between the upper substrate 210 and the lower substrate 220.
  • the isolation pillars 260 separate the liquid crystals 240 into a plurality of regions, each of which is respectively Corresponding to a transmissive area of colored light for achieving separate control of different colored lights in one display pixel.
  • the liquid crystal display panel 200 further includes a TFT (Thin Film). Transistor, thin film transistor 270, pixel electrode (not shown), and common electrode (not shown), etc., are some of the structural features of the present invention, and will not be further described herein.
  • TFT Thin Film
  • Transistor, thin film transistor 270, pixel electrode (not shown), and common electrode (not shown), etc. are some of the structural features of the present invention, and will not be further described herein.
  • the liquid crystal display module replaces the conventional brightness enhancement sheet assembly and the lower polarizer with a quantum rod material capable of emitting polarization, thereby achieving high color contrast, high color saturation, low power consumption and low cost of the liquid crystal display.
  • the energy consumption is 1/3 of that of a conventional liquid crystal display, the power consumption is extremely low, and since there is no lower polarizer and a brightness enhancement film assembly, the lower polarizer and the brightness enhancement film assembly are completely replaced by the quantum rod film, saving components and The process can achieve the purpose of cost reduction.
  • the quantum rod film can excite polarized light, and emit polarized light of different wavelengths by adjusting the diameter of the quantum rod in the quantum rod film, thereby obtaining light of different colors, which satisfies the display requirement of the liquid crystal display.
  • FIG. 8 is a schematic structural diagram of a preferred embodiment of the liquid crystal display of the present invention.
  • the liquid crystal display includes a housing 800 and a liquid crystal display module described in the above embodiment disposed inside the housing 800.
  • a liquid crystal display module described in the above embodiment disposed inside the housing 800.

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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)
  • Polarising Elements (AREA)

Abstract

一种液晶显示器及其液晶显示模组，该液晶显示模组包括背光单元（100）、液晶显示面板（200）以及设于背光单元（100）和液晶显示面板（200）之间的量子棒膜（300）；其中，液晶显示面板（200）包括：上基板（210）、下基板（220）以及上偏光片（230）；上基板（210）和下基板（220）之间填充有液晶体（240）；上偏光片（230）设于上基板（210）外侧，即液晶显示面板（200）的出光侧；其中，量子棒膜（300）具体设于下基板（220）与背光单元（100）之间。该液晶显示模组采用可发射偏光的量子棒材料取代传统的彩色滤光片和下偏光片，达到液晶显示器的高彩色对比度、高色饱和度、低功耗以及低成本的目的。

Description

液晶显示器及其液晶显示模组
【技术领域】
本发明涉及液晶显示的技术领域，具体是涉及一种液晶显示器及其液晶显示模组。
【背景技术】
量子点（Quantum dots）是一种尺寸仅1-20nm之间的纳米颗粒，由于量子点的PL（photoluminescence 光致发光，所谓光致发光指的是以光作为激励手段，激发材料中的电子从而实现发光的过程。它是光生额外载流子对的复合过程中伴随发生的现象）谱具有FWHM（full width at half maximum 半高宽，又称为半峰宽，是指吸收谱带高度最大处高度为一半时谱带的全宽，也即峰值高度一半时的透射峰宽度）窄的特点，其发光峰值波长WL（wave length）可随量子点尺寸的大小来调节。
由于量子点具有这样的特性，故量子点作为一种光源应用于显示领域，可以实现极高的色彩饱和度，使显示的色彩更加绚丽。故，近年来，量子点（Quantum dots）技术已广泛应用于液晶显示器中的背光中。但是，由于量子点吸收蓝光偏振光后，发射出光几乎不具备偏振性。如图1所示。图1为量子点消偏光特性示意图，图中标号101表示量子点，102表示线偏振蓝光，103表示经过量子点后的非线偏振量子点发射光。
【发明内容】
本发明实施例提供一种液晶显示器及其液晶显示模组，以解决现有技术中量子点作为液晶显示器元件材料时的消偏光特性以及液晶显示器组件结构复杂的技术问题。
为解决上述问题，本发明实施例提供了一种液晶显示模组，所述液晶显示模组包括背光单元、液晶显示面板以及设于所述背光单元和所述液晶显示面板之间的量子棒膜；其中，所述液晶显示面板包括：上基板、下基板以及上偏光片；所述上基板和所述下基板之间填充有液晶体；所述上偏光片设于所述上基板外侧，即所述液晶显示面板的出光侧；其中，所述量子棒膜具体设于所述下基板与所述背光单元之间。
根据本发明一优选实施例，所述背光单元提供蓝色背光。
根据本发明一优选实施例，所述量子棒膜包括依次交替间隔设置的红光量子棒膜区、绿光量子棒膜区、透射区以及设于所述红光量子棒膜区、所述绿光量子棒膜区和所述透射区上表面或者下表面的偏光层，其中，所述红光量子棒膜区和所述绿光量子棒膜区的量子棒直径不同。
根据本发明一优选实施例，所述量子棒膜还包括设于所述红光量子棒膜区、所述绿光量子棒膜区以及所述透射区上、下表面的保护层。
根据本发明一优选实施例，所述偏光层的透光轴与所述红光量子棒膜区、所述绿光量子棒膜区的量子棒的长轴方向平行，以使经过所述量子棒膜不同透光区后的光具有相同的偏振方向。
根据本发明一优选实施例，所述背光单元提供紫色背光。
根据本发明一优选实施例，所述量子棒膜包括由三种直径的量子棒排列组成的偏光发光层和设于所述偏光发光层上、下表面的保护层。
根据本发明一优选实施例，所述液晶显示面板还包括设于所述上基板下表面的彩色滤光膜，且所述上基板和/或所述下基板采用紫光过滤材料或者涂设有紫光过滤膜。
根据本发明一优选实施例，所述液晶显示面板进一步包括多个设于所述上、下基板之间的隔离柱，所述隔离柱将所述液晶体隔离成多个区域，每一所述区域分别对应所述量子棒膜的一个透光区。
为解决上述技术问题，本发明还提供一种液晶显示器，所述液晶显示器包括上述实施例中所述的液晶显示模组。
相对于现有技术，本发明提供的液晶显示器及其液晶显示模组，由于采用可发射偏光的量子棒材料取代传统的彩色滤光片（或者增光组件）和下偏光片，达到液晶显示器的高彩色对比度、高色饱和度、低功耗以及低成本的目的。理论上能耗为传统液晶显示器的1/3，功耗极低，且由于没有下偏光片和RGB 彩色滤光层（或者增光组件），用量子棒膜完全替换了下偏光片和RGB彩色滤光层（或者增光组件），节省了元件和制程，可以实现成本降低的目的。该量子棒膜可以激发偏振光，通过调节量子棒膜中量子棒的直径而发出不同波长的偏振光，进而得到不同颜色的光，以满足液晶显示器的显示需求。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是量子点消偏光特性示意图；
图2是量子棒激发偏振光示意图；
图3是本发明液晶显示模组第一实施例的结构示意图；
图4是图3实施例中量子棒膜的结构正视图；
图5是图4中量子棒膜的结构剖视图；
图6是本发明液晶显示模组第二实施例的结构示意图；
图7是图6实施例中量子棒膜的结构剖视图；以及
图8是本发明液晶显示器一优选实施例的结构简图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图2，图2是量子棒激发偏振光示意图，量子棒是一种一维量子限域的纳米材料。其发光特性具有和量子点相类似的特性，其发光光谱波长可通常量子棒的直径进行调节，且发光光谱的FWHM（full width at half maximum 半高宽，又称为半峰宽，是指吸收谱带高度最大处高度为一半时谱带的全宽，也即峰值高度一半时的透射峰宽度）同量子点一样窄。但相比量子点，其最大的特点是，当蓝光（无论自然光还是偏振光）激发量子棒发光后，量子棒会发出偏振光（单一的本征发光的情况下）极高的偏振光，其偏振方向沿着量子棒的长径方向，如图2中所示。其中，201表示量子棒，202表示线偏振蓝光，203表示振动方向沿量子棒长径方向的偏振光。
请参阅图3，图3是本发明液晶显示模组第一实施例的结构示意图。该液晶显示模组包括但不限于以下原件：背光单元100、液晶显示面板200以及设于背光单元100和液晶显示面板200之间的量子棒膜300。
具体而言，该液晶显示面板200包括上基板210、下基板220以及上偏光片230。其中，上基板210和下基板220之间填充有液晶体240。上偏光片230则设于上基板210的外侧，即该液晶显示面板200的出光侧。量子棒膜300具体设于下基板220与背光单元100之间，背光单元100提供背光光源，光线透过量子棒膜300，从下基板220的底部射入液晶显示面板200。
在本实施例中，背光单元100提供蓝色背光。该背光单元100进一步包括蓝光灯110以及导光板120，蓝光灯110设于导光板120的侧边。图中111表示背光单元100发出的蓝色光。
请一并参阅图4和图5，图4是图3实施例中量子棒膜的结构正视图，以及图5是图4中量子棒膜的结构剖视图。该量子棒膜300包括依次交替间隔设置的红光量子棒膜区301、绿光量子棒膜区302以及透射区303。其中，根据量子棒的特性，其发光光谱波长可通常量子棒的直径进行调节，因此，红光量子棒膜301区和绿光量子棒膜区302的量子棒直径不同，进而当蓝光照射量子棒膜300的红光量子棒膜区301和绿光量子棒膜区302后可以得到红色和绿色的两种色光。另外，蓝光照射在透射区303时，则直接穿过透射区303，从而蓝光照射量子棒膜300后形成了红光（R，red）、绿光（G，green）和蓝光（B，blue），三种显示所需的元色光。
进一步地，该量子棒膜300还包括设于红光量子棒膜区301、绿光量子棒膜区302和透射区303上表面或者下表面的偏光层320，该偏光层320的透光轴与红光量子棒膜区301、绿光量子棒膜区302的量子棒的长轴方向平行，以使经过量子棒膜300不同透光区（或者说不同的光色区）后的光具有相同的偏振方向。
更优选地，该量子棒膜300还包括设于红光量子棒膜区301、绿光量子棒膜区302以及透射区303上、下表面的保护层310。该保护层310具有阻水阻氧的作用，用以防止量子棒被氧化后而寿命快速衰减。
另外，请继续参阅图3，该液晶显示面板200进一步包括多个设于上基板210和下基板220之间的隔离柱260，隔离柱260将液晶体240隔离成多个区域，每一区域分别对应量子棒膜300的一个透光区（即一种色光的透射区），用以实现对不同色光区内色光的单独控制。
当然，液晶显示面板200还包括TFT（Thin Film Transistor，薄膜晶体管）270、像素电极（图中未示）以及公共电极（图中未示）等，这一部分结构技术特征，在本领域技术人员的理解范围内，此处不再赘述。
本发明实施例提供的液晶显示模组，由于采用可发射偏光的量子棒材料取代传统的彩色滤光片和下偏光片，达到液晶显示器的高彩色对比度、高色饱和度、低功耗以及低成本的目的。理论上能耗为传统液晶显示器的1/3，功耗极低，且由于没有下偏光片和RGB 彩色滤光层（Color filter），用量子棒膜完全替换了下偏光片和RGB彩色滤光层（Color filter），节省了元件和制程，可以实现成本降低的目的。该量子棒膜可以激发偏振光，通过调节量子棒膜中量子棒的直径而发出不同波长的偏振光，进而得到不同颜色的光，满足了液晶显示器的显示需求。
请参阅图6，图6是本发明液晶显示模组第二实施例的结构示意图。该液晶显示模组同样包括但不限于以下原件：背光单元100、液晶显示面板200以及设于背光单元100和液晶显示面板200之间的量子棒膜300。
具体而言，该液晶显示面板200包括上基板210、下基板220以及上偏光片230。其中，上基板210和下基板220之间填充有液晶体240。上偏光片230则设于上基板210的外侧，即该液晶显示面板200的出光侧。量子棒膜300具体设于下基板220与背光单元100之间，背光单元100提供背光光源，光线透过量子棒膜300，从下基板220的底部射入液晶显示面板200。
在本实施例中，背光单元100提供紫色背光。该背光单元100进一步包括紫光灯130以及导光板120，紫光灯130设于导光板120的侧边。图中112表示背光单元100发出的紫色光。
请参阅图7，图7是图6实施例中量子棒膜的结构剖视图。该实施例中的量子棒膜300包括由三种直径的量子棒排列组成的偏光发光层350，根据量子棒的特性，其发光光谱波长可通常量子棒的直径进行调节，因此偏光发光层350由三种直径量子棒排列而成，以使紫光照射到量子棒膜300后可以发射出由红光、绿光和蓝光组成的混合光。
与上一实施例不同的是，该实施例中的液晶显示面板200还包括设于上基板210下表面的彩色滤光膜250。该彩色滤光膜250用于将从量子棒膜300发射出的由红光、绿光和蓝光组成的混合光分离开。而上基板210和下基板220其中的一者或两者采用紫光过滤材料制成，目的是过滤掉未被量子棒膜300吸收的紫光，进而达到保护人眼的目的。另外，还可以通过在基板上涂设紫光过滤膜（图中未示）来达到过滤紫光的目的。
更优选地，该量子棒膜300还包括设于偏光发光层350上、下表面的保护层360，该保护层360具有阻水阻氧的作用，用以防止量子棒被氧化后而寿命快速衰减。
另外，请继续参阅图6，该液晶显示面板200进一步包括多个设于上基板210和下基板220之间的隔离柱260，隔离柱260将液晶体240隔离成多个区域，每一区域分别对应一种色光的透射区，用以实现对一个显示像素内不同色光的单独控制。
当然，液晶显示面板200还包括TFT（Thin Film Transistor，薄膜晶体管）270、像素电极（图中未示）以及公共电极（图中未示）等，这一部分结构技术特征，在本领域技术人员的理解范围内，此处不再赘述。
本发明实施例提供的液晶显示模组，由于采用可发射偏光的量子棒材料取代传统的增光片组件和下偏光片，达到液晶显示器的高彩色对比度、高色饱和度、低功耗以及低成本的目的。理论上能耗为传统液晶显示器的1/3，功耗极低，且由于没有下偏光片和增光膜片组件，用量子棒膜完全替换了下偏光片和增光膜片组件，节省了元件和制程，可以实现成本降低的目的。该量子棒膜可以激发偏振光，通过调节量子棒膜中量子棒的直径而发出不同波长的偏振光，进而得到不同颜色的光，满足了液晶显示器的显示需求。
另外，本发明实施例还提供一种液晶显示器，请参阅图8，图8是本发明液晶显示器一优选实施例的结构简图。其中，该液晶显示器包括壳体800以及设于壳体800内部的上述实施例中所述的液晶显示模组。关于液晶显示模组的技术特征请参阅上述实施例中的详细描述，而液晶显示器的其他部分结构技术特征，在本领域技术人员的理解范围内，此处亦不再赘述。
以上所述仅为本发明的一种实施例，并非因此限制本发明的保护范围，凡是利用本发明说明书及附图内容所作的等效装置或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (19)

  1. 一种液晶显示模组，其中，所述液晶显示模组包括背光单元、液晶显示面板以及设于所述背光单元和所述液晶显示面板之间的量子棒膜；所述液晶显示面板包括：
    上基板；
    下基板，所述上基板和所述下基板之间填充有液晶体；
    上偏光片，设于所述上基板外侧，即所述液晶显示面板的出光侧；
    所述量子棒膜具体设于所述下基板与所述背光单元之间，所述量子棒膜包括依次交替间隔设置的红光量子棒膜区、绿光量子棒膜区、透射区以及设于所述红光量子棒膜区、所述绿光量子棒膜区和所述透射区上表面或者下表面的偏光层，其中，所述红光量子棒膜区和所述绿光量子棒膜区的量子棒直径不同。
  2. 一种液晶显示模组，其中，所述液晶显示模组包括背光单元、液晶显示面板以及设于所述背光单元和所述液晶显示面板之间的量子棒膜；所述液晶显示面板包括：
    上基板；
    下基板，所述上基板和所述下基板之间填充有液晶体；
    上偏光片，设于所述上基板外侧，即所述液晶显示面板的出光侧；
    所述量子棒膜具体设于所述下基板与所述背光单元之间。
  3. 根据权利要求2所述的液晶显示模组，其中，所述背光单元提供蓝色背光。
  4. 根据权利要求3所述的液晶显示模组，其中，所述量子棒膜包括依次交替间隔设置的红光量子棒膜区、绿光量子棒膜区、透射区以及设于所述红光量子棒膜区、所述绿光量子棒膜区和所述透射区上表面或者下表面的偏光层，其中，所述红光量子棒膜区和所述绿光量子棒膜区的量子棒直径不同。
  5. 根据权利要求4所述的液晶显示模组，其中，所述量子棒膜还包括设于所述红光量子棒膜区、所述绿光量子棒膜区以及所述透射区上、下表面的保护层。
  6. 根据权利要求5所述的液晶显示模组，其中，所述偏光层的透光轴与所述红光量子棒膜区、所述绿光量子棒膜区的量子棒的长轴方向平行，以使经过所述量子棒膜不同透光区后的光具有相同的偏振方向。
  7. 根据权利要求2所述的液晶显示模组，其中，所述背光单元提供紫色背光。
  8. 根据权利要求7所述的液晶显示模组，其中，所述量子棒膜包括由三种直径的量子棒排列组成的偏光发光层和设于所述偏光发光层上、下表面的保护层。
  9. 根据权利要求8所述的液晶显示模组，其中，所述液晶显示面板还包括设于所述上基板下表面的彩色滤光膜，且所述上基板和/或所述下基板采用紫光过滤材料或者涂设有紫光过滤膜。
  10. 根据权利要求6所述的液晶显示模组，其中，所述液晶显示面板进一步包括多个设于所述上、下基板之间的隔离柱，所述隔离柱将所述液晶体隔离成多个区域，每一所述区域分别对应所述量子棒膜的一个透光区。
  11. 一种液晶显示器，其中，所述液晶显示器包括液晶显示模组，所述液晶显示模组包括背光单元、液晶显示面板以及设于所述背光单元和所述液晶显示面板之间的量子棒膜；所述液晶显示面板包括：
    上基板；
    下基板，所述上基板和所述下基板之间填充有液晶体；
    上偏光片，设于所述上基板外侧，即所述液晶显示面板的出光侧；
    所述量子棒膜具体设于所述下基板与所述背光单元之间。
  12. 根据权利要求11所述的液晶显示器，其中，所述背光单元提供蓝色背光。
  13. 根据权利要求12所述的液晶显示器，其中，所述量子棒膜包括依次交替间隔设置的红光量子棒膜区、绿光量子棒膜区、透射区以及设于所述红光量子棒膜区、所述绿光量子棒膜区和所述透射区上表面或者下表面的偏光层，其中，所述红光量子棒膜区和所述绿光量子棒膜区的量子棒直径不同。
  14. 根据权利要求13所述的液晶显示器，其中，所述量子棒膜还包括设于所述红光量子棒膜区、所述绿光量子棒膜区以及所述透射区上、下表面的保护层。
  15. 根据权利要求14所述的液晶显示器，其中，所述偏光层的透光轴与所述红光量子棒膜区、所述绿光量子棒膜区的量子棒的长轴方向平行，以使经过所述量子棒膜不同透光区后的光具有相同的偏振方向。
  16. 根据权利要求11所述的液晶显示器，其中，所述背光单元提供紫色背光。
  17. 根据权利要求16所述的液晶显示器，其中，所述量子棒膜包括由三种直径的量子棒排列组成的偏光发光层和设于所述偏光发光层上、下表面的保护层。
  18. 根据权利要求17所述的液晶显示器，其中，所述液晶显示面板还包括设于所述上基板下表面的彩色滤光膜，且所述上基板和/或所述下基板采用紫光过滤材料或者涂设有紫光过滤膜。
  19. 根据权利要求15所述的液晶显示器，其中，所述液晶显示面板进一步包括多个设于所述上、下基板之间的隔离柱，所述隔离柱将所述液晶体隔离成多个区域，每一所述区域分别对应所述量子棒膜的一个透光区。
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