WO2016155042A1 - 液晶显示装置及其背光模组 - Google Patents

液晶显示装置及其背光模组 Download PDF

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Publication number
WO2016155042A1
WO2016155042A1 PCT/CN2015/076728 CN2015076728W WO2016155042A1 WO 2016155042 A1 WO2016155042 A1 WO 2016155042A1 CN 2015076728 W CN2015076728 W CN 2015076728W WO 2016155042 A1 WO2016155042 A1 WO 2016155042A1
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WO
WIPO (PCT)
Prior art keywords
light
backlight module
optical fibers
reflector
optical film
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/CN2015/076728
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English (en)
French (fr)
Inventor
常建宇
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
Priority to US14/893,930 priority Critical patent/US10012867B2/en
Publication of WO2016155042A1 publication Critical patent/WO2016155042A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—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
    • G02F1/1336—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
    • 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
    • G02B6/0005—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 of the fibre type
    • G02B6/0008—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 of the fibre type the light being emitted at the end of the fibre
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02F1/133553—Reflecting elements
    • 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
    • G02F1/133605—Direct backlight including specially adapted 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332—Front frames
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G02F1/133618—Illuminating devices for ambient 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
    • G02F1/35—Non-linear optics
    • G02F1/3501—Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
    • G02F1/3505—Coatings; Housings; Supports

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular to a backlight module (Backlight) Module) and a liquid crystal display device having the backlight module.
  • a backlight module Backlight
  • a liquid crystal display device having the backlight module.
  • the backlight type liquid crystal display device is composed of a display panel and a backlight module, and the backlight module can be divided into a lateral type according to the incident position of the light source (Side-light) Type) and direct-type (Direct-light Type) two.
  • the lateral direction means that the light source is disposed on the side of the display panel, the light is incident on the light guide plate and the line light is converted into a uniform surface light source through the light guide plate
  • the direct type refers to the light source array on the back of the display panel, and the light passes through the optical film.
  • the film is converted into a uniform surface light source
  • the backlight modules of the two methods generally use LED as a light source.
  • the embodiments of the present invention provide a liquid crystal display device and a backlight module thereof, which can ensure uniformity of light after conduction and mixing for a large-sized liquid crystal display device.
  • the backlight module includes a back plate, an optical film, a plurality of optical fibers, a reflector, and a positioning member fixed to the reflector, wherein the reflector is fixed to the back plate, and the positioning component includes a plurality of pressing holes, and a plurality of The optical fibers are correspondingly passed through a plurality of pressing holes, and the positioning members are tightly matched to fix a plurality of optical fibers, and the plurality of optical fibers are spaced apart in the same direction and used to conduct light to form a light bar of the backlight module, and the light includes a plurality of optical fibers to conduct the sun.
  • the light emitted by the illumination device, the optical film and the back plate are spaced apart to define a cavity for allowing light to be transmitted, and the reflector fixes the plurality of optical fibers to the side of the cavity such that each fiber and the back plate are located
  • the horizontal direction has a predetermined angle, and the reflector is located at the exit of the plurality of optical fibers to adjust the angle of the light entering the cavity, and the back plate is disposed toward the surface of the optical film as an indented curved surface, the back plate Used to reflect light that is transmitted to the backing plate to the optical film.
  • the backing plate further comprises a reflective sheet attached to the surface facing the optical film.
  • the reflector is U-shaped or V-shaped, and the plurality of fibers are located at the bottom of the U-shaped or V-shaped structure, and the openings of the U-shaped or V-shaped structure serve as the exit portions of the plurality of optical fibers.
  • each of the optical fibers and the backplane have a predetermined angle of 27 degrees in a horizontal direction.
  • the backlight module includes a back plate, an optical film, a plurality of optical fibers, and a reflector.
  • the plurality of optical fibers are spaced apart in the same direction and are used to conduct light to form a light bar of the backlight module, the optical film and the back plate.
  • the spacers are arranged to define a cavity for allowing light to be transmitted, and the reflector fixes the plurality of optical fibers to the side of the cavity such that each of the fibers and the back plate have a predetermined angle in a horizontal direction, and the reflector is located
  • the exit of the plurality of fibers is used to adjust the angle at which light enters the cavity, and the backplate is used to reflect light transmitted to the backplate to the optical film.
  • the light includes a plurality of optical fibers to conduct the sun and the light emitted by the illumination device.
  • the surface of the back plate facing the optical film is set as an indented curved curved surface.
  • the surface of the back sheet facing the optical film is parallel to the optical film.
  • the backing plate further comprises a reflective sheet attached to the surface facing the optical film.
  • the reflector is U-shaped or V-shaped, and the plurality of fibers are located at the bottom of the U-shaped or V-shaped structure, and the openings of the U-shaped or V-shaped structure serve as the exit portions of the plurality of optical fibers.
  • each of the optical fibers and the backplane have a predetermined angle of 27 degrees in a horizontal direction.
  • the backlight module further includes a positioning member fixed to the reflector, the reflector is fixed to the back plate, the positioning member includes a plurality of pressing holes, and the plurality of optical fibers are correspondingly passed through the plurality of pressing holes, and the positioning member is tightly Match multiple fiber optics.
  • Still another technical solution adopted by the present invention is to provide a liquid crystal display device.
  • the liquid crystal display device includes a display panel and the backlight module, and any one of the preferred embodiments.
  • the display panel is disposed on a side of the optical film of the backlight module facing away from the back panel.
  • the liquid crystal display device further comprises a front frame, and the front frame presses the display panel on the reflector.
  • the use of the optical fiber enables more light sources that can selectively emit light, including but not limited to lighting devices such as LEDs commonly used in the industry, such as optical fibers. It can transmit the light from the sun, and the reflector can adjust the angle of the light, so that the light can be transmitted to a long distance without multiple reflections of the surface of the backboard, thus ensuring the uniformity of light after conduction and mixing, which is beneficial to the light.
  • the large-scale development trend of the liquid crystal display device, and the light does not need to be reflected multiple times, can reduce the light loss, and meet the environmental protection and energy-saving requirements advocated by the society under the general trend.
  • FIG. 1 is a cross-sectional view showing the structure of an embodiment of a backlight module of the present invention
  • Figure 2 is a cross-sectional view showing the structure of an embodiment of a reflector positioning optical fiber of the present invention.
  • the backlight module 10 adopts a light-input scheme combining a lateral type and a direct-type technology, and includes a back plate 11 , an optical film 12 , a plurality of optical fibers 13 , and a reflector 14 , wherein a plurality of optical fibers are included. 13 are disposed along the same direction (ie, the side direction of the backlight module 10) and are used to conduct light to form a light bar (light source) of the backlight module 10.
  • the optical film 12 and the back plate 11 are relatively spaced to define an allowable
  • the light-conducting cavity, the reflector 14 fixes the plurality of optical fibers 13 to the side of the cavity such that each of the optical fibers 13 and the back plate 11 have a predetermined angle in a horizontal direction, and the reflector 14 is located
  • the light exiting the plurality of optical fibers 13 is used to adjust the angle at which the light enters the cavity
  • the back plate 11 is used to reflect the light transmitted to the back plate 11 to the optical film 12, and the light is converted into the optical film 12 by the optical film 12.
  • a uniform surface source is used to adjust the angle at which the light enters the cavity.
  • optical fiber 13 enables the backlight module 10 to select more types of light sources, including but not limited to lighting devices such as LEDs commonly used in the industry.
  • the optical fiber 13 can also transmit light from the sun, which is more green than conventional lighting devices.
  • Environmental protection concept is more important to the sun.
  • the optical fiber 13 Since the optical fiber 13 has a predetermined angle with the horizontal direction of the back plate 11, the light will have multiple reflections in the reflector 14 and have an exit angle when entering the cavity, and the reflector 14 can be adjusted to adjust the exit angle of the light.
  • the light can be transmitted to a long distance without multiple reflections of the curved surface of the back plate 11, thereby ensuring the uniformity of the light in the vicinity of the long-distance region and the light-emitting portion after being conducted and mixed, which is favorable for the liquid crystal.
  • the large-scale development trend of the display device in addition to the light does not need to be reflected multiple times, can reduce the light loss when using the lighting facilities, in line with the environmental protection and energy-saving requirements advocated by the society under the general trend.
  • each element of the backlight module 10 is exemplified below.
  • the reflector 14 is fixed to the side of the back plate 11 and has a U-shaped strip shape. Of course, it may also be a V-shaped structure.
  • the opening of the U-shaped structure of the reflector 14 serves as a plurality of optical fibers.
  • a plurality of optical fibers 13 are located at the bottom of the U-shaped structure of the reflector 14.
  • the plurality of optical fibers 13 can be positioned on the bottom of the reflector 14 by means of tape bonding or peripheral positioning members.
  • the positioning member 15 shown in FIG. 2 is fixed on the reflector 14, and the positioning member 15 is disposed.
  • a plurality of pressing holes are included, and the plurality of optical fibers 13 are correspondingly passed through the plurality of pressing holes 151, and the plurality of optical fibers 13 can be fixed by the tight fitting of the positioning members 15.
  • each of the optical fibers 13 has a predetermined angle with respect to the horizontal direction of the backing plate 11, a part of the light emitted by the optical fiber 13 is directly reflected into the optical film 12 through the lower half of the reflector 14, and a part thereof.
  • the upper half of the reflector 14 is reflected to the surface of the backing plate 11 and enters the optical film 12 through the reflection of the surface of the backing plate 11, and a part of the reflection through the upper and lower portions of the reflector 14 directly enters the optical film 12. Or, it is conducted to the surface of the backing plate 11, and a part of the surface is directly transmitted to the surface of the backing plate 11 without being reflected by the reflector 14, and is reflected by the surface of the backing plate 11 into the optical film 12.
  • the predetermined angle can be actually obtained.
  • the predetermined angle is 27°
  • the optical fiber 13 is conducted.
  • the light is more collimated and is reflected by the reflector 14 to ensure that more light is transmitted to a greater distance.
  • the predetermined angle is different, the light reflected into the optical film 12 does not necessarily all include the above four parts.
  • the inner surface of the reflector 14 may be a metal smooth surface having a good light reflection effect, or a reflection sheet having a good light reflection effect may be attached.
  • the surface of the back sheet 11 facing the optical film 12 may be a metal smooth surface having a good light reflection effect, or a reflection sheet having a good light reflection effect may be attached.
  • the metal smooth surface of the back plate 11 includes not only a horizontal plane parallel to the optical film 12 but also an indented curved curved surface, and the radius of curvature of the indented curved curved surface should be integrated with the size of the liquid crystal display device and the above predetermined The angle of the opening and the size of the opening of the reflector 14 are designed.
  • the edge region of the optical film 12 can be carried on the reflector 14 and the extension of the back plate 11 toward the optical film 12.
  • the optical film 12 can be a diffusion sheet, a prism sheet, and a reverse prism sheet (Turning). Prism Sheet), Bright Enhancement Film (BEF), Reflective Brightening Film (Dual Bright Enhancement) Film, BEF), Diffused Reflective Polarizer Film (DRPF) or any combination of the above.
  • the backlight module 10 may further be provided with a light guide plate, which is located in the cavity, that is, between the back plate 11 and the optical film 12 .
  • a light guide plate which is located in the cavity, that is, between the back plate 11 and the optical film 12 .
  • the embodiment of the present invention further provides a liquid crystal display device, including a display panel, a front frame, and the backlight module 10, wherein the display panel is disposed on a side of the optical film 12 of the backlight module 10 facing away from the back plate 11, and The front frame is pressed against the plastic frame, or is pressed against the extension of the back plate 11 toward the reflector 14, or the reflector 14.
  • the liquid crystal display device has the beneficial effects that the backlight module 10 can produce.

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Abstract

一种液晶显示装置及其背光模组，该背光模组包括背板(11)、光学膜片(12)、多条光纤(13)及反光罩(14)，多条光纤(13)用于传导光线以构成背光模组的灯条，光学膜片(12)和背板(11)相对间隔设置以限定出允许光线传导的腔体，反光罩(14)将多条光纤(13)固定于腔体的侧边，使得光纤(13)与背板(11)具有一预定夹角，并且反光罩(14)位于光纤(13)的出光处，以调节光线进入腔体时的角度，背板(11)用于将传导至其上的光线反射至光学膜片(12)，能够确保用于大尺寸液晶显示装置时光线在传导及混合后的均匀性。

Description

液晶显示装置及其背光模组
【技术领域】
本发明涉及液晶显示技术领域，具体而言，涉及一种背光模组（Backlight module）以及具有该背光模组的液晶显示装置。
【背景技术】
背光型液晶显示装置由显示面板和背光模组构成，根据光源入射位置的不同背光模组可分成侧向式（Side-light type）与直下式（Direct-light type）两种。其中，侧向式是指光源设置于显示面板侧边，光线入射到导光板并通过导光板将线光线转换为均匀的面光源，直下式是指光源列阵于显示面板背部，光线通过光学膜片转换成均匀的面光源，并且这两种方式的背光模组目前普遍采用LED作为光源。
近年来随着技术的发展，业界提出了一种结合侧向式与直下式技术的入光方案，其通过空气以及背板底面的曲面设置完成光线的传导及混合，从而无需导光板，但当前该入光方案仅适用于较小尺寸的液晶显示装置，原因在于大尺寸产品需要光线在空气中传输的距离较远，仅凭背板底面的曲面设置的反射很难将光线传导至较远距离，且光线在传导及混合后的均匀性难以保证，另外光线在空气中多次反射，导致光损失严重，不符合大趋势下社会提倡的环保节能要求。
【发明内容】
鉴于此，本发明实施例提供一种液晶显示装置及其背光模组，能够确保用于大尺寸液晶显示装置时光线在传导及混合后的均匀性。
本发明采用的一个技术方案是提供一种背光模组。所述背光模组包括背板、光学膜片、多条光纤、反光罩以及与反光罩相固定的定位件，其中，反光罩与背板相固定，定位件包括多个迫紧孔，多条光纤一一对应穿过多个迫紧孔，定位件紧配合固定多条光纤，多条光纤沿同一方向间隔设置且用于传导光线以构成背光模组的灯条，光线包括多条光纤传导太阳以及照明设备所发出的光线，光学膜片和背板相对间隔设置以限定出允许光线传导的腔体，反光罩将多条光纤固定于腔体的侧边，使得每一光纤与背板所处的水平方向均具有一预定夹角，并且反光罩位于多条光纤的出光处，以调节光线进入腔体时的角度，背板朝向光学膜片的表面设置为内陷式弧形曲面，背板用于将传导至背板上的光线反射至光学膜片。
其中，背板还包括贴附于朝向光学膜片的表面上的反射片。
其中，反光罩为U型或V型结构，多条光纤位于U型或V型结构的底部，U型或V型结构的开口作为多条光纤的出光处。
其中，每一光纤与背板所处的水平方向具有的预定夹角为27度。
本发明采用的另一个技术方案是提供一种背光模组。所述背光模组包括背板、光学膜片、多条光纤以及反光罩，其中，多条光纤沿同一方向间隔设置且用于传导光线以构成背光模组的灯条，光学膜片和背板相对间隔设置以限定出允许光线传导的腔体，反光罩将多条光纤固定于腔体的侧边，使得每一光纤与背板所处的水平方向均具有一预定夹角，并且反光罩位于多条光纤的出光处，以调节光线进入腔体时的角度，背板用于将传导至背板上的光线反射至光学膜片。
其中，光线包括多条光纤传导太阳以及照明设备所发出的光线。
其中，背板朝向光学膜片的表面设置为内陷式弧形曲面。
其中，背板朝向光学膜片的表面与光学膜片相平行。
其中，背板还包括贴附于朝向光学膜片的表面上的反射片。
其中，反光罩为U型或V型结构，多条光纤位于U型或V型结构的底部，U型或V型结构的开口作为多条光纤的出光处。
其中，每一光纤与背板所处的水平方向具有的预定夹角为27度。
其中，背光模组进一步包括与反光罩相固定的定位件，反光罩与背板相固定，定位件包括多个迫紧孔，多条光纤一一对应穿过多个迫紧孔，定位件紧配合固定多条光纤。
本发明采用的又一个技术方案是提供一种液晶显示装置。所述液晶显示装置包括显示面板以及上述背光模组及其任一项可优选方案，显示面板设置于背光模组的光学膜片背向背板的一侧。
其中，液晶显示装置还包括前框，前框将显示面板压持于反光罩上。
通过上述技术方案，本发明实施例的液晶显示装置及其背光模组，光纤的采用使得可选择的发出光线的光源更多，包括但不仅限于当前业界普遍使用的LED等照明设备，例如光纤还可以传导太阳发出的光线，另外反光罩可调节光线的出射角度，使得光线无需经过背板曲面的多次反射即可传导至较远距离，从而确保光线在传导及混合后的均匀性，有利于液晶显示装置的大尺寸发展趋势，并且光线无需进行多次反射，可减少光损失，符合大趋势下社会提倡的环保节能要求。
【附图说明】
图1是本发明的背光模组一实施例的结构剖视图；
图2是本发明的反光罩定位光纤一实施例的结构剖视图。
【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，本发明以下所描述的实施例仅仅是本发明的一部分实施例，而不是本发明全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其它实施例，都属于本发明所保护的范围。
图1是本发明的背光模组一实施例的结构剖视图。如图1所示，背光模组10采用侧向式与直下式技术相结合的入光方案，其包括背板11、光学膜片12、多条光纤13以及反光罩14，其中，多条光纤13沿同一方向（即背光模组10的侧边方向）间隔设置且用于传导光线以构成背光模组10的灯条（光源），光学膜片12和背板11相对间隔设置以限定出允许光线传导的腔体，反光罩14将多条光纤13固定于所述腔体的侧边，使得每一条光纤13与背板11所处的水平方向均具有一预定夹角，并且反光罩14位于多条光纤13的出光处，用以调节光线进入腔体时的角度，背板11用于将传导至所述背板11上的光线反射至光学膜片12，光线通过光学膜片12转换成均匀的面光源。
光纤13的采用使得背光模组10可选择的光源种类更多，包括但不仅限于当前业界普遍使用的LED等照明设备，例如光纤13还可以传导太阳发出的光线，相比传统照明设备更加符合绿色环保概念。
由于光纤13与背板11所处的水平方向具有预定夹角，因此光线在反光罩14中会经过多次反射且进入腔体时具有一出射角，可见反光罩14能够调节光线的出射角，相比较于现有技术，光线无需经过背板11曲面的多次反射即可传导至较远距离，从而确保光线经过传导及混合后在远距离区域与出光处附近区域的均匀性，有利于液晶显示装置的大尺寸发展趋势，另外光线无需进行多次反射，可减少使用照明设施时的光损失，符合大趋势下社会提倡的环保节能要求。
为了更好的阐述上述目的、技术特征以及相比现有技术所产生的有益效果，下文示例性的列举背光模组10的各个元件的结构。
参阅图1所示，所述反光罩14固定于背板11的侧边且为U型结构条状，当然也可以为V型结构，反光罩14（的U型结构）的开口作为多条光纤13的出光处，多条光纤13位于反光罩14（的U型结构）的底部。其中，可采用胶带黏贴或外设定位件的方式将多条光纤13定位于反光罩14的底部，具体而言，反光罩14上固定有图2所示的定位件15，定位件15包括多个迫紧孔，多条光纤13一一对应穿过所述多个迫紧孔151，通过定位件15的紧配合即可固定多条光纤13。
再次参阅图1所示，由于每一条光纤13与背板11所处的水平方向具有预定夹角，因此光纤13发出的光线一部分经过反光罩14的下半部分直接反射入光学膜片12，一部分经过反光罩14的上半部分反射至背板11的表面并经过背板11表面的反射进入光学膜片12，还有一部分经过反光罩14的上、下半部分的反射直接进入光学膜片12或传导至背板11的表面，另有一部分无需经过反光罩14的反射直接传导至背板11的表面并经过背板11表面的反射进入光学膜片12。
根据背光模组10所适用的液晶显示装置的尺寸，即光线所传导的最远距离的实际要求，上述预定夹角可进行实际取值，例如预定夹角为27°时，光纤13所传导出的光线较为准直，并且经过反光罩14的反射后可保证较多的光线传导至较远距离。并且，预定夹角在不同取值时，反射入光学膜片12的光线不一定全部包括上述四部分。
为了减少光线在反光罩14中的光损失，反光罩14的内表面可采用具有良好光反射效果的金属平滑面，或贴附有具有良好光反射效果的反射片。同理，背板11朝向光学膜片12的表面可采用具有良好光反射效果的金属平滑面，或贴附有具有良好光反射效果的反射片。其中，背板11具有的金属平滑面不仅包括与光学膜片12平行的水平面，还包括内陷式弧形曲面，且内陷式弧形曲面的曲率半径应综合液晶显示装置的尺寸以及上述预定夹角、反光罩14的开口大小进行设计。
另外，光学膜片12的边缘区域可承载于反光罩14以及背板11朝向光学膜片12的延伸部上，光学膜片12可以为扩散片、棱镜片、逆棱镜片（Turning Prism Sheet）、增亮膜（Bright Enhancement Film，BEF）、反射式增亮膜（Dual Bright Enhancement Film，BEF）、非多层膜式反射偏光片（Diffused Reflective Polarizer Film，DRPF）或上述任意组合。
在本发明的其他实施例中，背光模组10可进一步设置有导光板，该导光板位于上述腔体中，即夹持于背板11与光学膜片12之间。此时，背光模组10进行光线反射、传导及混合的原理与上述相同。
本发明实施例进一步提供一种液晶显示装置，包括显示面板、前框以及上述背光模组10，所述显示面板设置于背光模组10的光学膜片12背向背板11的一侧，并且可以被前框压持于胶框上，或压持于背板11朝向反光罩14的延伸部上，又或者反光罩14上。
所述液晶显示装置具有上述背光模组10所能产生的有益效果。
再次说明，以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，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 (14)

  1. 一种背光模组，其中，所述背光模组包括背板、光学膜片、多条光纤、反光罩以及与所述反光罩相固定的定位件，其中，所述反光罩与所述背板相固定，所述定位件包括多个迫紧孔，所述多条光纤一一对应穿过所述多个迫紧孔，所述定位件紧配合固定所述多条光纤，所述多条光纤沿同一方向间隔设置且用于传导光线以构成所述背光模组的灯条，所述光线包括所述多条光纤传导太阳以及照明设备所发出的光线，所述光学膜片和所述背板相对间隔设置以限定出允许所述光线传导的腔体，所述反光罩将所述多条光纤固定于所述腔体的侧边，使得每一所述光纤与所述背板所处的水平方向均具有一预定夹角，并且所述反光罩位于所述多条光纤的出光处，以调节所述光线进入所述腔体时的角度，所述背板朝向所述光学膜片的表面设置为内陷式弧形曲面，所述背板用于将传导至所述背板上的所述光线反射至所述光学膜片。
  2. 根据权利要求1所述的背光模组，其中，所述背板还包括贴附于朝向所述光学膜片的所述表面上的反射片。
  3. 根据权利要求1所述的背光模组，其中，所述反光罩为U型或V型结构，所述多条光纤位于所述U型或V型结构的底部，所述U型或V型结构的开口作为所述多条光纤的出光处。
  4. 根据权利要求3所述的背光模组，其中，每一所述光纤与所述背板所处的水平方向具有的所述预定夹角为27度。
  5. 一种背光模组，其中，所述背光模组包括背板、光学膜片、多条光纤以及反光罩，其中，所述多条光纤沿同一方向间隔设置且用于传导光线以构成所述背光模组的灯条，所述光学膜片和所述背板相对间隔设置以限定出允许所述光线传导的腔体，所述反光罩将所述多条光纤固定于所述腔体的侧边，使得每一所述光纤与所述背板所处的水平方向均具有一预定夹角，并且所述反光罩位于所述多条光纤的出光处，以调节所述光线进入所述腔体时的角度，所述背板用于将传导至所述背板上的所述光线反射至所述光学膜片。
  6. 根据权利要求5所述的背光模组，其中，所述光线包括所述多条光纤传导太阳以及照明设备所发出的光线。
  7. 根据权利要求5所述的背光模组，其中，所述背板朝向所述光学膜片的表面设置为内陷式弧形曲面。
  8. 根据权利要求5所述的背光模组，其中，所述背板朝向所述光学膜片的表面与所述光学膜片相平行。
  9. 根据权利要求7或8所述的背光模组，其中，所述背板还包括贴附于朝向所述光学膜片的所述表面上的反射片。
  10. 根据权利要求5所述的背光模组，其中，所述反光罩为U型或V型结构，所述多条光纤位于所述U型或V型结构的底部，所述U型或V型结构的开口作为所述多条光纤的出光处。
  11. 根据权利要求10所述的背光模组，其中，每一所述光纤与所述背板所处的水平方向具有的所述预定夹角为27度。
  12. 根据权利要求5所述的背光模组，其中，所述背光模组还包括与所述反光罩相固定的定位件，所述反光罩与所述背板相固定，所述定位件包括多个迫紧孔，所述多条光纤一一对应穿过所述多个迫紧孔，所述定位件紧配合固定所述多条光纤。
  13. 一种液晶显示装置，其中，所述液晶显示装置包括显示面板以及权利要求5-12任意一项所述的背光模组，所述显示面板设置于所述背光模组的所述光学膜片背向所述背板的一侧。
  14. 根据权利要求13所述的液晶显示装置，其中，所述液晶显示装置还包括前框，所述前框将所述显示面板压持于所述反光罩上。
PCT/CN2015/076728 2015-04-01 2015-04-16 液晶显示装置及其背光模组 Ceased WO2016155042A1 (zh)

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