WO2017201782A1 - 背光模组及具有该背光模组的液晶显示器 - Google Patents

背光模组及具有该背光模组的液晶显示器 Download PDF

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Publication number
WO2017201782A1
WO2017201782A1 PCT/CN2016/086641 CN2016086641W WO2017201782A1 WO 2017201782 A1 WO2017201782 A1 WO 2017201782A1 CN 2016086641 W CN2016086641 W CN 2016086641W WO 2017201782 A1 WO2017201782 A1 WO 2017201782A1
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Prior art keywords
light source
quantum dot
dot film
liquid crystal
crystal display
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Ceased
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PCT/CN2016/086641
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English (en)
French (fr)
Inventor
程艳
陈仕祥
韩梅
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/112,525 priority Critical patent/US10185074B2/en
Publication of WO2017201782A1 publication Critical patent/WO2017201782A1/zh
Anticipated expiration legal-status Critical
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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
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
    • 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
    • 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
    • G02F1/133621—Illuminating devices providing coloured light
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • the present invention claims the prior application priority of the invention titled "Backlight Module and Liquid Crystal Display Having the Backlight Module", which is filed on May 27, 2016.
  • the content of the above-mentioned prior application is incorporated by reference. Incorporated into this text.
  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module and a liquid crystal display having the same.
  • the color gamut level of the existing Thin Film Transistor-Liquid Crystal Display is generally low, generally only about 72%.
  • a quantum dot (QD) film is mainly used to realize high color gamut conversion, that is, a quantum dot is packaged in a glass tube, and a glass tube is placed in a blue light emitting diode and Between the light guides.
  • the cutting point of the quantum dot film is prone to infiltration of water and oxygen, and the quantum dots are prone to failure in such an aqueous oxygen-containing environment.
  • the green quantum dots are smaller than the red quantum dots by 10,000, and the surface energy is high. It is easier to react with water and oxygen, thereby forming a purple-red failure zone. For mobile products with narrow borders, failure of the cut portion can result in the quantum dot film not being used well in the product.
  • the invention provides a backlight module capable of remedying the defect of the failure of the cutting portion existing in the quantum dot film during cutting, so that the quantum dot film has a higher color gamut conversion function.
  • the invention also provides a liquid crystal display having the backlight module.
  • One aspect of the present invention provides a backlight module for a liquid crystal display, and the backlight module package
  • the quantum dot film, the light guide plate and the light source module, the light emitted by the light source module enters the quantum dot film through the light guide plate, the quantum dot film includes an effective area and a failure area, and the light source module includes a blue light source and a green light source, wherein the blue light source corresponds to a position of the effective area, and the green light source corresponds to a position of the failure area.
  • the green light emitted by the green light source and the blue light emitted by the blue light source enter the quantum dot film via the light guide plate, and are mixed with the red light of the failure zone of the quantum dot film to form white light.
  • failure zone is located around the active zone, and the blue light source is located between the green light sources.
  • the light source module is an LED light bar
  • the blue light source is a blue light LED
  • the green light source is a green light LED
  • the blue light LED is located at an intermediate position of the LED light bar
  • the green LED is located at the LED Both ends of the light bar.
  • the upper and lower surfaces of the quantum dot film are further provided with a protective layer.
  • a liquid crystal display includes a backlight module, a transistor layer and a panel disposed on the backlight module, and the backlight module includes a quantum dot film, a light guide plate, and a light source module.
  • Light emitted by the light source module enters the quantum dot film through the light guide plate, the quantum dot film includes an effective area and a failure area, and the light source module includes a blue light source and a green light source, and the blue light source and the effective area Corresponding to the position, the green light source corresponds to the position of the failure zone.
  • the liquid crystal display further includes a reflective layer disposed on a side of the light guide plate opposite to the quantum dot film.
  • the backlight module provided by the present invention, by setting the green light source at a position corresponding to a failure area of the quantum dot film, the green light emitted by the green light source and the blue light source The emitted blue light and the red light emitted from the failure zone of the quantum dot film are mixed with each other to form white light, thereby effectively compensating for the defect of failure of the failure zone caused by the quantum dot film during cutting, and the quantum is solved.
  • the edge film failure shows an abnormal problem, which further improves the color gamut conversion function of the quantum dot film, so that the liquid crystal display also has a higher color gamut display.
  • FIG. 1 is a cross-sectional view showing a liquid crystal display of an embodiment of the present invention.
  • FIG. 2 is a schematic plan view of a quantum dot film of an embodiment of the present invention.
  • FIG 3 is a top plan view of a backlight module according to an embodiment of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined.
  • the ground connection, or the integral connection may be a mechanical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • FIG. 1 is a cross-sectional view showing a liquid crystal display according to an embodiment of the present invention.
  • the liquid crystal display 100 includes a backlight module 10, a thin film transistor (TFT) substrate 20 and a color filter 30 which are sequentially disposed on the backlight module 10.
  • TFT thin film transistor
  • the backlight module 10 includes a quantum dot film 11 , a light guide plate 13 , and a light source module 15 , wherein the quantum dot film 11 is disposed on the light guide plate 13 and located on the TFT substrate 20 opposite to the color filter.
  • One side of the sheet 30, that is, the quantum dot film 11 is located between the TFT substrate 20 and the light guide plate 13.
  • the color filter 30, the TFT substrate 20, the quantum dot film 11, and the light guide plate 13 are stacked in this order from top to bottom.
  • the light source module 15 is located at one end of the light guide plate 13 , and the light emitted from the light guide plate 13 enters the quantum dot film 11 through the light guide plate 13 and enters the color filter 30 via the quantum dot film 11 (see FIG. 1 for light transmission diagram). Shown).
  • FIG. 2 is a schematic plan view of a quantum dot film 11 according to an embodiment of the present invention.
  • the quantum dot film 11 includes an effective region 111 and a failure region 113.
  • the effective region 111 is a central region of the quantum dot film 11, and is defined as a region in which the quantum dot film 11 has a high color conversion efficiency, and the blue light emits white light through the effective region 111.
  • the failure zone 113 is a peripheral region of the quantum dot film 11 and is located around the effective region 111, and is defined as a region where the quantum dot film 11 has a low color conversion efficiency.
  • the failure zone 113 is generally a trimming edge of the quantum dot film 11, and the blue light emits red light through the failure zone 113 to form a reddish failure zone.
  • FIG. 3 is a top view of a backlight module 10 according to an embodiment of the present invention.
  • the light source module 15 includes a blue light source 151 and a green light source 153.
  • the number of the blue light sources 151 is seven, and the number of the green light sources 153 is two, wherein the blue light source 151 Located between the green light sources 153, specifically, the blue light source 151 corresponds to the location of the effective area 111, and the green light source 153 corresponds to the location of the failure area 113.
  • the light of the blue light source 151 passes through the active area 111 and emits white light.
  • the white light is formed, thereby effectively compensating for the defect that the quantum dot film 11 causes the failure zone 113 to fail during cutting, that is, the purple region caused by the lack of green color in the edge region of the quantum dot film 11 is compensated Therefore, the edge region (ie, the failure region 113) is changed from magenta to white corresponding to the effective region 111, thereby solving the problem that the edge region of the quantum dot film 11 is abnormal, and the quantum dot film is further improved. 11 color gamut conversion function.
  • the number of the blue light sources 151 is not limited.
  • the number of the green light source 153 is also limited to two, and the number of the green light source 153 may be two or more.
  • the blue light source 151 corresponds to the position of the effective area 111, and the green light source 153 and the The location of the failure zone 113 corresponds to the location.
  • the light source module 15 can be a light emitting diode (LED) light strip, and the blue light source 151 can be a blue LED.
  • the green light source 153 is a green LED. Wherein, the blue LED is located at an intermediate position of the LED light bar, and the green LED is located at two ends of the LED light bar.
  • a surface of the quantum dot film 11 facing the thin film transistor substrate 20 and the light guide plate 13 may also be provided with a protective layer (not shown).
  • the protective layer can be used to make the surface of the quantum dot film 11 flatter, and on the other hand, it can well protect the quantum dot film 11, and fully guarantee its color gamut conversion function.
  • the liquid crystal display 100 further includes a reflective layer 40 disposed under the backlight module 10.
  • the reflective layer 40 is disposed on a side of the light guide plate 13 of the backlight module 10 facing away from the quantum dot film 11.
  • the reflective layer 40 can reflect the light that exposes the bottom surface of the light guide plate 13 back to the light.
  • the light guide plate 13 is used to improve the use efficiency of light, and further improve brightness and energy efficiency.
  • the green light source 153 is disposed at a position corresponding to the failure region 113 of the quantum dot film 11, and the green light emitted by the green light source 153 and the blue light source 151 are The emitted blue light and the red light emitted from the failure region 113 of the quantum dot film 11 are mixed with each other to form white light, thereby effectively compensating for the failure of the failure region 113 caused by the quantum dot film 11 during cutting (ie, The defect of the purple-red phenomenon caused by the lack of green color in the edge region of the quantum dot film 11 solves the problem that the edge failure of the quantum dot film 11 is abnormal, and further improves the color gamut conversion function of the quantum dot film 11, thereby making the
  • the liquid crystal display 100 also has a higher color gamut display.
  • the backlight module 10 of the present invention can be applied to various liquid crystal displays, and can realize high color gamut design of various liquid crystal displays.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模组(10)及具有该背光模组(10)的液晶显示器(100)。所述背光模组(10)用于液晶显示器(100)；所述背光模组(10)包括量子点膜(11)、导光板(13)及光源模块(15)，所述光源模块(15)发出的光经所述导光板(13)进入所述量子点膜(11)，所述量子点膜(11)包括有效区(111)和失效区(113)，所述光源模块(15)包括蓝光光源(151)和绿光光源(153)，所述蓝光光源(151)与所述有效区(111)的位置对应，所述绿光光源(153)与所述失效区(113)的位置对应。所述背光模组(10)及液晶显示器(100)的量子点膜(11)采用绿色光源弥补因裁切时导致的失效区(113)的失效的缺陷，具有更高的色域转换功能。

Description

背光模组及具有该背光模组的液晶显示器
本发明要求2016年05月27日递交的发明名称为“背光模组及具有该背光模组的液晶显示器”的申请号为201610362488.1的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示领域，尤其是涉及一种背光模组及一种具有该背光模组的液晶显示器。
背景技术
现有的薄膜晶体管液晶显示器(Thin Film Transistor-Liquid Crystal Display，TFT-LCD)的色域水平通常比较低，一般仅在72％左右。目前，为了提高TFT-LCD的色域水平，主要采用量子点(Quantum Dot，QD)膜来实现高色域转换，即，将量子点封装于玻璃管中，将玻璃管置于蓝光发光二极管与导光板之间。然而，量子点膜的裁切部位容易有水氧的渗入，量子点在这种含水含氧的环境中易失效，其中，绿色量子点相较于红色量子点的直径较小10000，表面能高，更易与水氧反应失效，从而形成呈紫红色的失效区。对于边框较窄的移动产品而言，裁切部位失效会导致量子点膜无法较好的运用于产品中。
针对上述技术存在的问题，在本领域中希望寻求一种能够弥补量子点膜在裁切时存在的裁切部位失效的缺陷，从而实现量子点膜具有更高的色域转换功能，以解决现有技术中的不足之处。
发明内容
本发明提供一种背光模组，其能够弥补量子点膜在裁切时存在的裁切部位失效的缺陷，使得量子点膜具有更高的色域转换功能。
本发明还提供一种具有所述背光模组的液晶显示器。
本发明一方面提供了一种背光模组，其用于液晶显示器，所述背光模组包 括量子点膜、导光板及光源模块，所述光源模块发出的光经所述导光板进入所述量子点膜，所述量子点膜包括有效区和失效区，所述光源模块包括蓝光光源和绿光光源，所述蓝光光源与所述有效区的位置对应，所述绿色光源与所述失效区的位置对应。
其中，所述绿光光源发出的绿光与所述蓝光光源发出的蓝光经由所述导光板进入所述量子点膜，并与所述量子点膜的失效区的红光相互混合而成白光。
其中，所述失效区位于所述有效区的周围，所述蓝光光源位于所述绿光光源之间。
其中，所述光源模块为LED灯条，所述蓝光光源为蓝光LED，所述绿色光源为绿光LED，所述蓝光LED位于所述LED灯条的中间位置，所述绿色LED位于所述LED灯条的两端。
其中，所述量子点膜的上下两个表面还设置有保护层。
本发明另一方面提供了一种液晶显示器，其包括背光模组、依次设置于该背光模组上的晶体管层及面板，所述背光模组包括量子点膜、导光板及光源模块，所述光源模块发出的光经所述导光板进入所述量子点膜，所述量子点膜包括有效区和失效区，所述光源模块包括蓝光光源和绿光光源，所述蓝光光源与所述有效区的位置对应，所述绿色光源与所述失效区的位置对应。
其中，所述液晶显示器还包括反射层，所述反射层设置于所述导光板背对所述量子点膜的一侧。
相较于现有技术，在本发明提供的背光模组中，通过在对应于所述量子点膜的失效区的位置设置所述绿色光源，则该绿光光源发出的绿光与该蓝光光源发出的蓝光、及所述量子点膜的失效区的发出红光相互混合而成白光，从而有效地弥补了因量子点膜在裁切时导致的失效区的失效的缺陷，解决了所述量子点膜边缘失效显示异常的问题，进一步提高了量子点膜的色域转换功能，从而使得该液晶显示器也具有更高的色域显示。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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为本发明的实施例的液晶显示器的剖面图。
图2为本发明的实施例的量子点膜的平面示意图。
图3为本发明的实施例的背光模组的俯视图。
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，所描述的实施例仅仅是本发明一部分实施例，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他实施例，都属于本发明保护的范围。
此外，以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明中所提到的方向用语，例如，“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”、“侧面”等，仅是参考附加图式的方向，因此，使用的方向用语是为了更好、更清楚地说明及理解本发明，而不是指示或暗指所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸地连接，或者一体地连接；可以是机械连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
此外，在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。若本说明书中出现“工序”的用语，其不仅是指独立的工序，在与其它工序无法明确区别时，只要能实现该工序所预期的作用则也包括在本用语中。另外，本说明书中用“～”表示的数值范围是指将“～”前后记载的数值分别作为最小值及最大值包括在内的范围。在附图中，结构相似或相同的单元用相同的标号表示。
请参阅图1，图1为本发明的实施例的液晶显示器的剖面图。如图1所示， 该液晶显示器100包括背光模组10、依次设置于该背光模组10上的薄膜晶体管(Thin Film Transistor，TFT)基板20及彩色滤光片(Color Filter)30。
该背光模组10包括量子点膜11、导光板13及光源模块15，其中，所述量子点膜11设置于所述导光板13上，并位于所述TFT基板20背对所述彩色滤光片30的一侧，即，所述量子点膜11位于所述TFT基板20与所述导光板13之间。较佳地，所述彩色滤光片30、所述TFT基板20、所述量子点膜11及所述导光板13从上到下依次层叠设置。该光源模块15位于导光板13的一端，其发出的光经该导光板13进入该量子点膜11，并经由该量子点膜11进入所述彩色滤光片30(如图1中光线传输示意图所示)。
请一并参阅图2，图2为本发明的实施例的量子点膜11的平面示意图。具体为，所述量子点膜11包括有效区111和失效区113。该有效区111为所述量子点膜11的中心区域，定义为该量子点膜11上色域转换效率较高的区域，蓝色光线经过该有效区111发出白光。该失效区113为所述量子点膜11的周缘区域，其位于所述有效区111的周围，定义为该量子点膜11上色域转换效率较低的区域。所述失效区113一般为该量子点膜11的剪裁边缘，蓝色光线经过该失效区113发出红光，即形成呈紫红色的失效区。
请一并参阅图3，图3为本发明的实施例的背光模组10的俯视图。该光源模块15包括蓝光光源151和绿光光源153，在本较佳实施例中，该蓝光光源151的数量为七个，该绿光光源153的数量为两个，其中，所述蓝光光源151位于所述绿光光源153之间，具体地，该蓝光光源151与所述有效区111的所在位置对应，该绿色光源153与所述失效区113的所在位置对应。该蓝色光源151的光线经过该有效区111后发出白光。该绿光光源153发出的绿光与该蓝光光源151发出的蓝光经由所述导光板13后进入所述量子点膜11，并与所述量子点膜11的失效区113的发出红光相互混合而成白光，从而有效地弥补了因所述量子点膜11在裁切时导致所述失效区113失效的缺陷，即，弥补了该量子点膜11的边缘区域因缺少绿色而引起的紫红现象，使得该边缘区域(即失效区113)由紫红色变为与所述有效区111一致的白色，从而解决了所述量子点膜11边缘区域显示异常的问题，进一步提高了所述量子点膜11的色域转换功能。可以理解，在其他实施例中，所述蓝光光源151的数量并不局限 为七个，该绿光光源153的数量也局限为两个，二者均还可以为其他数量个，其中，该蓝光光源151与所述有效区111的所在位置对应，该绿色光源153与所述失效区113的所在位置对应。
在本较佳实施例中，该光源模块15可为发光二极管(Light Emitting Diode，LED发光二极管)灯条，该蓝光光源151可为蓝光LED，该绿色光源153为绿光LED。其中，该蓝光LED位于该LED灯条的中间位置，该绿色LED位于该LED灯条的两端。
可以理解，所述量子点膜11的朝向所述薄膜晶体管基板20及所述导光板13的表面还可设置有保护层(图未示)。该保护层一方面可用于使量子点膜11的表面更平整，另一方面使其能够很好地保护量子点膜11，充分保证其色域转换功能。
可以理解，在本发明的实施例中，所述液晶显示器100还包括反射层40，该反射层40设置于所述背光模组10下方。具体地，所述反射层40设置于所述背光模组10的导光板13背对所述量子点膜11的一侧，该反射层40可将露出所述导光板13底面的光线反射回该导光板13中，用来提高光线的使用效率，进一步提高亮度和能效。
本发明实施例提供的背光模组10中，通过在对应于所述量子点膜11的失效区113的位置设置所述绿色光源153，则该绿光光源153发出的绿光与该蓝光光源151发出的蓝光、及所述量子点膜11的失效区113的发出红光相互混合而成白光，从而有效地弥补了因量子点膜11在裁切时导致的失效区113的失效(即，该量子点膜11的边缘区域因缺少绿色而引起的紫红现象)的缺陷，解决了所述量子点膜11边缘失效显示异常的问题，进一步提高了量子点膜11的色域转换功能，从而使得该液晶显示器100也具有更高的色域显示。本发明的背光模组10可应用在多种液晶显示器中，能够实现多种液晶显示器的高色域设计。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描 述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (18)

  1. 一种背光模组，其用于液晶显示器，其中，所述背光模组包括量子点膜、导光板及光源模块，所述光源模块发出的光经所述导光板进入所述量子点膜，所述量子点膜包括有效区和失效区，所述光源模块包括蓝光光源和绿光光源，所述蓝光光源与所述有效区的位置对应，所述绿色光源与所述失效区的位置对应。
  2. 如权利要求1所述的背光模组，其中，所述绿光光源发出的绿光与所述蓝光光源发出的蓝光经由所述导光板进入所述量子点膜，并与所述量子点膜的失效区的红光相互混合而成白光。
  3. 如权利要求1所述的背光模组，其中，所述失效区位于所述有效区的周围，所述蓝光光源位于所述绿光光源之间。
  4. 如权利要求1所述的背光模组，其中，所述光源模块为LED灯条，所述蓝光光源为蓝光LED，所述绿色光源为绿光LED，所述蓝光LED位于所述LED灯条的中间位置，所述绿色LED位于所述LED灯条的两端。
  5. 如权利要求1所述的背光模组，其中，所述量子点膜的上下两个表面还设置有保护层。
  6. 如权利要求2所述的背光模组，其中，所述量子点膜的上下两个表面还设置有保护层。
  7. 如权利要求3所述的背光模组，其中，所述量子点膜的上下两个表面还设置有保护层。
  8. 如权利要求4所述的背光模组，其中，所述量子点膜的上下两个表面还设置有保护层。
  9. 一种液晶显示器，其包括背光模组、依次设置于该背光模组上的薄膜晶体管基板及彩色滤光片，其中，所述背光模组包括量子点膜、导光板及光源模块，所述光源模块发出的光经所述导光板进入所述量子点膜，所述量子点膜包括有效区和失效区，所述光源模块包括蓝光光源和绿光光源，所述蓝光光源与所述有效区的位置对应，所述绿色光源与所述失效区的位置对应。
  10. 如权利要求9所述的液晶显示器，其中，所述绿光光源发出的绿光与所述蓝光光源发出的蓝光经由所述导光板进入所述量子点膜，并与所述量子点膜的失效区的红光相互混合而成白光。
  11. 如权利要求9所述的液晶显示器，其中，所述失效区位于所述有效区的周围，所述蓝光光源位于所述绿光光源之间。
  12. 如权利要求9所述的液晶显示器，其中，所述光源模块为LED灯条，所述蓝光光源为蓝光LED，所述绿色光源为绿光LED，所述蓝光LED位于所述LED灯条的中间位置，所述绿色LED位于所述LED灯条的两端。
  13. 如权利要求9所述的液晶显示器，其中，所述量子点膜的上下两个表面还设置有保护层。
  14. 如权利要求9所述的液晶显示器，其中，所述液晶显示器还包括反射层，所述反射层设置于所述导光板背对所述量子点膜的一侧。
  15. 如权利要求10所述的液晶显示器，其中，所述液晶显示器还包括反射层，所述反射层设置于所述导光板背对所述量子点膜的一侧。
  16. 如权利要求11所述的液晶显示器，其中，所述液晶显示器还包括反射层，所述反射层设置于所述导光板背对所述量子点膜的一侧。
  17. 如权利要求12所述的液晶显示器，其中，所述液晶显示器还包括反射层，所述反射层设置于所述导光板背对所述量子点膜的一侧。
  18. 如权利要求13所述的液晶显示器，其中，所述液晶显示器还包括反射层，所述反射层设置于所述导光板背对所述量子点膜的一侧。
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