WO2015081692A1 - Plaque de guide de lumière, source de rétroéclairage et appareil d'affichage à cristaux liquides - Google Patents

Plaque de guide de lumière, source de rétroéclairage et appareil d'affichage à cristaux liquides Download PDF

Info

Publication number
WO2015081692A1
WO2015081692A1 PCT/CN2014/080847 CN2014080847W WO2015081692A1 WO 2015081692 A1 WO2015081692 A1 WO 2015081692A1 CN 2014080847 W CN2014080847 W CN 2014080847W WO 2015081692 A1 WO2015081692 A1 WO 2015081692A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
layer
liquid crystal
Prior art date
Application number
PCT/CN2014/080847
Other languages
English (en)
Chinese (zh)
Inventor
赵洪宇
王丹
邹斌
吕金库
郭俊杰
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2015081692A1 publication Critical patent/WO2015081692A1/fr

Links

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
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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 field of display technologies, and in particular, to a light guide plate, a backlight, and a liquid crystal display device. Background technique
  • the liquid crystal display device is a flat panel display device which works by utilizing a liquid crystal material to modulate light under an electric field to produce various brightness and color changes to form an image. Since the liquid crystal material itself does not emit light, the liquid crystal display device requires a special backlight.
  • the display performance metrics of liquid crystal display devices include contrast, color gamut, etc. An important factor affecting the color gamut of existing liquid crystal display devices is backlight technology.
  • the invention provides a light guide plate, a backlight and a liquid crystal display device for improving the color gamut of the liquid crystal display device, thereby improving the quality of the display image.
  • a light guide plate provided by an embodiment of the invention includes a substrate, and a blue light-emitting layer on the light incident surface of the substrate.
  • the backlight of the liquid crystal display device comprises the light guide plate and the blue light emitting device according to the embodiment of the invention
  • the light emitted by the blue light emitting device emits the blue light of the light guide plate to excite the light emitting layer and excite the light emitting layer, so that the light entering the light guide plate has a relatively high light.
  • the wide color gamut makes the display color of the liquid crystal display device more vivid, thereby improving the display quality of the liquid crystal display device.
  • the blue excitation light-emitting layer is a quantum dot material layer, a fluorescent material layer or a rare earth ion material layer.
  • the blue light-emitting layer is a quantum dot material layer.
  • the quantum dot material may be, for example, a semiconductor cluster having a size of 1 to 20 nm. Since the quantum dot material can withstand repeated excitations and has high luminous efficiency, the display quality of the liquid crystal display device can be effectively improved.
  • the light guide plate may further include a protective layer on a surface of the quantum dot material layer. Providing a protective layer on the quantum dot material layer can effectively prevent the quantum dot material layer from being degraded by moisture The fluorescence excitation effect of the sub-points improves the stability of the display quality of the liquid crystal display device.
  • the quantum dot material of the quantum dot material layer is a nanocrystal comprising indium phosphide and a pot.
  • the light incident surface of the substrate comprises a plurality of recessed structures.
  • the plurality of recessed structures can scatter light entering the light guide plate, thereby greatly improving the uniformity of light entering the light guide plate, thereby further improving the display quality of the liquid crystal display device.
  • the blue excitation light-emitting layer is a coating layer or a coating layer.
  • the inside of the substrate has a bubble structure
  • the bubble structure has a diameter of less than 0.1 mm.
  • the bubble structure can sufficiently scatter the light entering the inside of the light guide plate, further improving the uniformity of the light, thereby effectively improving the display quality of the liquid crystal display device.
  • the light-emitting surface of the substrate may have a prism structure, which can effectively improve the brightness of the light-emitting surface of the light guide plate, thereby improving the display brightness and thereby improving the display quality of the liquid crystal display device.
  • the light guide plate further includes a semi-transmissive film layer on a light-emitting surface of the substrate, and the semi-transparent film layer has the same polarization direction as the lower polarizer of the liquid crystal panel.
  • the semi-transflective film layer located on the light-emitting surface of the substrate can effectively improve the optical utilization efficiency, thereby improving the display quality of the liquid crystal display device.
  • a backlight comprising: a light source, and the light guide plate according to any one of the foregoing aspects, wherein the light source comprises a plurality of blue light emitting devices, and the light emitted by the blue light emitting device emits The luminescent layer is excited to the blue light of the light guide plate. Since the above-mentioned light guide plate has the above technical effects, the backlight having the light guide plate also has a corresponding technical effect.
  • the blue light emitting device is a blue light emitting diode emitting light having a wavelength of 420 nm to 450 nm.
  • a liquid crystal display device comprising the backlight of the foregoing technical scheme. Since the backlight described above has the above-described technical effects, the liquid crystal display device having the backlight has a corresponding technical effect.
  • FIG. 1 is a cross-sectional structural view showing a first embodiment of a light guide plate of the present invention
  • FIG. 2 is a cross-sectional structural view showing a first embodiment of a light guide plate of the present invention
  • 3 is a cross-sectional structural view showing a first embodiment of a light guide plate of the present invention
  • 4 is a cross-sectional structural view showing a fourth embodiment of a light guide plate of the present invention
  • Figure 5 is a cross-sectional structural view showing a fifth embodiment of the light guide plate of the present invention.
  • Figure 6 is a cross-sectional structural view showing a sixth embodiment of the light guide plate of the present invention.
  • FIG. 7 is a cross-sectional structural view showing an embodiment of a backlight of the present invention.
  • FIG. 8 is a cross-sectional structural view showing an embodiment of a liquid crystal display device of the present invention.
  • the light guide plate comprises a substrate and a blue excitation light emitting layer located on the light incident surface of the substrate.
  • the light guide plate When the light guide plate is applied to the backlight, the light emitted by the blue light emitting device emits light to the blue light excitation layer and excites the blue light to emit light.
  • the layer allows the light entering the light guide plate to have a wider color gamut, thereby making the color gamut of the liquid crystal display device wider, thereby improving the display quality of the liquid crystal display device.
  • spatially relative terms such as “under”, “lower”, “above”, “upper”, etc. may be used herein to describe one element or component as shown in the figure. The relationship between one or some of the elements or components. It will be understood that the spatially relative terms are used to summarize the different orientations of the device in use or operation, including the orientation shown in the drawings. For example, if the device in the drawings In the above, the elements “under” or “below” other elements or components will be “above” or “above” other components or components. Thus, the exemplary term “is in . . . The following can cover both the top and bottom orientations. The device can take other orientations (eg, rotated 90 degrees or in other orientations), and the spatial relativity descriptors used at this time are interpreted accordingly.
  • the light guide plate provided by the embodiment of the present invention includes: a substrate 10, and a blue light-emitting layer 11 on the light incident surface of the substrate 10.
  • a substrate 10 In the three primary colors of visible light of the human eye, since the wavelength of the blue light is short and the energy is large, in the embodiment of the present invention, blue light can be used as the excitation light source.
  • the light incident surface of the substrate 10 is a surface opposite to the position of the light source, such as the lower surface of the substrate, and the light emitting surface of the substrate 10 is, for example, the upper surface of the substrate.
  • the material of the substrate 10 is not limited, and may be, for example, PMMA (Polymethyl Methacrylate, polymethyl methacrylate, PMMA for short);
  • the blue light-emitting layer 11 may be a coating layer, that is, a light-incident surface coated on the substrate 10, or may be The coating layer is coated on the light incident surface of the substrate 10;
  • the blue light excitation light emitting layer 11 has a plurality of specific forms, and may be a quantum dot material layer, a fluorescent material layer or a rare earth ion material layer.
  • the quantum dot material may be, for example, a semiconductor cluster having a size of 1 to 20 nm.
  • the present invention preferably uses a quantum dot material.
  • the layer acts as a blue light excitation light emitting layer, which can effectively improve the display quality of the liquid crystal display device.
  • the quantum dot material of the quantum dot material layer may be a nanocrystal including indium phosphide and cadmium.
  • the light source of the backlight is provided by the blue light emitting device 2, and the light emitted by the blue light emitting device 2 is directed to the blue light excitation layer 11 to excite the blue light excitation.
  • Light emitting layer 11 When the quantum dot material layer is used as the blue excitation light-emitting layer, the peak of the radiation-emitting spectrum curve of the quantum dot material is narrow, and the energy can be controlled to be concentrated in the RGB portion, so that the color of the light emitted from the blue-light-emitting layer is saturated.
  • the high degree of RGB monochromatic light has a high brightness, that is, closer to the edge on the CIE map, so that the RGB three-point coordinates define a larger range. Since the colors in this range can be added by the three colors of light, the color gamut becomes wider. Therefore, the light entering the light guide plate 1 has a wider color gamut, so that the color gamut of the liquid crystal display device is wider and the display color is more vivid, thereby improving the display quality of the liquid crystal display device.
  • the light guide plate of the third embodiment of the present invention further includes: a protective layer 12 on the surface of the quantum dot material layer.
  • the protective layer is disposed on the quantum dot material layer, which can effectively prevent the quantum dot material layer from deteriorating the fluorescence excitation effect of the quantum dots, thereby improving the quality of the light guide plate and improving the display quality stability of the liquid crystal display device.
  • the second embodiment as shown in Fig. 2 provides an improved light guide plate in which the light incident surface of the substrate 10 includes a plurality of recessed structures.
  • the plurality of recessed structures can scatter light entering the light guide plate, thereby greatly improving the uniformity of the brightness of the light entering the light guide plate, and further improving the light guide plate including the light guide plate
  • the display quality of the liquid crystal display device may be formed by one-shot molding or hot press molding.
  • the inside of the substrate 10 has a bubble structure 13 to sufficiently scatter the light entering the inside of the light guide plate to further improve the uniformity of the light. Therefore, the display quality of the liquid crystal display device is effectively improved.
  • the diameter of the bubble structure 13 can be, for example, less than 0.1 mm. By making the diameter of the bubble structure within this range, the picture quality can be substantially prevented, thereby preventing the display quality of the liquid crystal display device from being lowered by the addition of the bubble structure.
  • the bubble structure inside the substrate 10 of the present invention may be replaced by other material particles different from the refractive index of the substrate 10, such as quartz glass particles or polycarbonate particles.
  • the light guide plate provided by the fifth embodiment of the present invention further includes a semi-transflective film layer 15 on the light-emitting surface of the substrate 10, a semi-transflective film layer 15 and a liquid crystal panel.
  • the polarization directions of the lower polarizers 4 are the same.
  • a semi-transparent film layer is disposed on the light-emitting surface of the substrate, and the polarization direction thereof is the same as the polarization direction of the lower polarizer of the liquid crystal panel. Therefore, when only the polarization direction of the light is the same as the polarization direction of the semi-transmissive film layer, the light is It is only possible to shoot the downward polarizer through the semi-transparent film.
  • the light enters the inside of the light guide plate and the downward polarizer is emitted from the light exit surface of the light guide plate, the light having a polarization direction different from that of the lower polarizer cannot pass through the semi-transparent film layer, and the semi-transparent film layer can be impenetrable. The light is reflected back to the inside of the light guide plate for recycling, thereby improving the optical utilization rate and improving the display quality of the liquid crystal display device.
  • the semi-transmissive film layer re-reflects the impenetrable light back into the interior of the light guide plate and interacts with the bubble structure inside the substrate, so that the light inside the light guide plate is more uniform, thereby improving the display quality of the liquid crystal display device.
  • the semi-transparent film layer 15 can be applied to the light-emitting surface of the substrate 10, and the material of the transflective film layer 15 is not limited.
  • PET Polyethylene terephthalate, polyethylene terephthalate, Referred to as PET).
  • the light-emitting surface of the substrate 10 has a prism structure, which can effectively improve the light-emitting surface of the light guide plate. Brightness.
  • the embodiment of the present invention further provides a backlight, the backlight includes: a light source, and the light guide plate provided by any of the foregoing embodiments, where the light source includes A plurality of blue light emitting devices, the light emitted by the blue light emitting device emits blue light from the light guide plate to excite the light emitting layer.
  • a preferred embodiment of the present invention provides a direct type backlight, comprising: a light source, and the light guide plate 1 provided by any of the foregoing embodiments, the light source comprises a plurality of blue light emitting devices 2, and the blue light emitting device 2 The emitted light is directed toward the blue light to excite the light-emitting layer 11.
  • the light guide plate 1 includes: a substrate 10, a blue light excitation light emitting layer 11 on the light incident surface of the substrate 10 (the blue light excitation light emitting layer 11 is, for example, a quantum dot material layer), a protective layer 12 on the surface of the quantum dot material layer, and a substrate
  • the inside of 10 has a bubble structure 13 having a diameter of 0.05 mm, a semi-transmissive film layer 15 on the light-emitting surface of the substrate 10, and a polarization of the semi-transparent film layer 15 and the lower polarizer 4 of the liquid crystal panel (see Fig. 8).
  • the light incident surface of the substrate 10 includes a plurality of recessed structures, and the light emitting surface of the substrate 10 has a prism structure. Since the backlight is the light guide plate of the above embodiment, the color gamut of the liquid crystal display device can be improved, and the display quality of the liquid crystal display device can be improved.
  • the light guide plate, the upper prism layer, the lower prism layer and the diffusion sheet may be integrated into an integrated component, so that the integrated component itself has the function of collecting and diffusing light, and is convenient for production and assembly of the backlight.
  • the product defects caused by the assembly of the diaphragm are avoided, and the assembly efficiency is greatly improved, thereby effectively reducing the cost of the backlight.
  • the upper prism layer, the lower prism layer and the diffusion sheet may comprise any form well known to those skilled in the art.
  • the blue light-emitting device 2 is a blue light-emitting diode having a light wavelength of from 420 nm to 450 nm.
  • the blue light emitted by the blue light emitting diode with a wavelength of 420 nm to 450 nm can excite quantum dot materials including indium phosphide and cadmium, thereby further increasing the color gamut of the liquid crystal display device and thereby improving the display quality of the liquid crystal display device.
  • the blue light emitting device 2 can be selected according to specific applications and actual needs.
  • the blue light emitting device 2 can be a blue light emitting diode emitting light having a wavelength of 435 nm.
  • the present invention further provides a liquid crystal display device including the backlight provided by the above embodiment, which is the same as the above embodiment.
  • the backlight in the medium so the beneficial effects of the liquid crystal display device, please refer to the above embodiment.
  • the spirit and scope of the invention. it is intended that the present invention cover the modifications and modifications of the inventions

Landscapes

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

Abstract

L'invention concerne une plaque de guide de lumière, une source de rétroéclairage et un appareil d'affichage à cristaux liquides qui portent sur le champ technique de l'affichage. La plaque de guide de lumière (1) comprend un substrat (10) et une couche électroluminescente excitée par la lumière bleue (11) qui est située sur une surface exposée à la lumière du substrat (10). La source de rétroéclairage de l'appareil d'affichage à cristaux liquides comprend la plaque de guide de lumière (1) et un dispositif électroluminescent bleu (2). La lumière émise par le composant électroluminescent bleu se dirige vers la couche électroluminescente excitée par la lumière bleue (11) et excite la couche électroluminescente excitée par la lumière bleue (11), ce qui peut améliorer une gamme de couleurs d'affichage de l'appareil d'affichage à cristaux liquides, et améliorer ainsi la qualité d'affichage de l'appareil d'affichage à cristaux liquides.
PCT/CN2014/080847 2013-12-06 2014-06-26 Plaque de guide de lumière, source de rétroéclairage et appareil d'affichage à cristaux liquides WO2015081692A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310657036.2 2013-12-06
CN201310657036.2A CN103676315A (zh) 2013-12-06 2013-12-06 一种导光板、背光源及液晶显示装置

Publications (1)

Publication Number Publication Date
WO2015081692A1 true WO2015081692A1 (fr) 2015-06-11

Family

ID=50314354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/080847 WO2015081692A1 (fr) 2013-12-06 2014-06-26 Plaque de guide de lumière, source de rétroéclairage et appareil d'affichage à cristaux liquides

Country Status (2)

Country Link
CN (1) CN103676315A (fr)
WO (1) WO2015081692A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3405834A4 (fr) * 2016-01-22 2019-06-26 LG Electronics Inc. -1- Dispositif d'affichage

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103676315A (zh) * 2013-12-06 2014-03-26 京东方科技集团股份有限公司 一种导光板、背光源及液晶显示装置
CN104501043A (zh) * 2014-12-19 2015-04-08 广东普加福光电科技有限公司 一种长寿命的量子点荧光复合薄膜及其制备方法
CN104832886B (zh) 2015-05-06 2018-05-08 合肥京东方显示光源有限公司 导光板、背光模组、制作导光板的设备及方法
CN105652516A (zh) * 2016-01-04 2016-06-08 合肥京东方显示光源有限公司 一种侧入式背光模组及其制作方法、显示装置
CN105867019A (zh) * 2016-03-30 2016-08-17 苏州星烁纳米科技有限公司 波长转换元件、背光模组和显示装置
CN105929480A (zh) * 2016-04-12 2016-09-07 苏州星烁纳米科技有限公司 一种新的导光板及其应用
CN106785859A (zh) * 2017-01-10 2017-05-31 中国科学院半导体研究所 基于气泡毛化的侧泵激光模块及应用其的固体激光器
CN106980208B (zh) * 2017-05-18 2023-04-14 常州丰盛光电科技股份有限公司 光可控型量子点背光源
CN107420856B (zh) * 2017-07-11 2020-01-03 深圳市华星光电技术有限公司 一种反射片及其制作方法、背光模组
CN108020958B (zh) * 2017-12-04 2020-09-01 福州大学 一种用于直下式背光源的封装结构及其制作方法
CN108488693A (zh) 2018-03-28 2018-09-04 武汉华星光电技术有限公司 Mini LED背光模组及荧光膜层的制作方法
CN109061945B (zh) * 2018-08-23 2021-09-17 厦门天马微电子有限公司 背光模组和显示装置
CN111679491A (zh) * 2020-05-11 2020-09-18 深圳市隆利科技股份有限公司 直下式背光装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10269822A (ja) * 1998-04-15 1998-10-09 Nichia Chem Ind Ltd 面状光源
CN1779522A (zh) * 2004-11-22 2006-05-31 高迪技术株式会社 用于背光装置的光激发－散射板和使用该光激发－散射板的用于液晶显示器的背光设备
KR20090014623A (ko) * 2007-08-06 2009-02-11 엘지전자 주식회사 확산 시트, 그 제조 방법, 그를 구비하는 백라이트 유닛 및그를 구비하는 액정 표시장치
CN102937268A (zh) * 2012-11-15 2013-02-20 京东方科技集团股份有限公司 一种导光板、背光模组和显示装置
CN102980136A (zh) * 2012-09-24 2013-03-20 友达光电股份有限公司 直下式背光模块及其光源扩散结构
CN103069331A (zh) * 2010-08-16 2013-04-24 Lg伊诺特有限公司 使用量子点的用于背光单元的部件及其制造方法
CN103228983A (zh) * 2010-11-10 2013-07-31 纳米系统公司 量子点薄膜、照明器件及照明方法
CN103676315A (zh) * 2013-12-06 2014-03-26 京东方科技集团股份有限公司 一种导光板、背光源及液晶显示装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006343386A (ja) * 2005-06-07 2006-12-21 Nitto Denko Corp 光学素子及びこれを用いた偏光面光源並びにこれを用いた表示装置
CN101260988A (zh) * 2008-04-17 2008-09-10 广东雪莱特光电科技股份有限公司 一种平面光源模组
CN102128377A (zh) * 2011-03-21 2011-07-20 中山伟强科技有限公司 Led导光板灯具组件
CN103032765A (zh) * 2012-12-11 2013-04-10 京东方科技集团股份有限公司 一种光源模组、液晶显示装置以及霓虹灯显示装置
CN203069818U (zh) * 2013-02-22 2013-07-17 京东方科技集团股份有限公司 导光板、阵列基板、背光源及液晶模组

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10269822A (ja) * 1998-04-15 1998-10-09 Nichia Chem Ind Ltd 面状光源
CN1779522A (zh) * 2004-11-22 2006-05-31 高迪技术株式会社 用于背光装置的光激发－散射板和使用该光激发－散射板的用于液晶显示器的背光设备
KR20090014623A (ko) * 2007-08-06 2009-02-11 엘지전자 주식회사 확산 시트, 그 제조 방법, 그를 구비하는 백라이트 유닛 및그를 구비하는 액정 표시장치
CN103069331A (zh) * 2010-08-16 2013-04-24 Lg伊诺特有限公司 使用量子点的用于背光单元的部件及其制造方法
CN103228983A (zh) * 2010-11-10 2013-07-31 纳米系统公司 量子点薄膜、照明器件及照明方法
CN102980136A (zh) * 2012-09-24 2013-03-20 友达光电股份有限公司 直下式背光模块及其光源扩散结构
CN102937268A (zh) * 2012-11-15 2013-02-20 京东方科技集团股份有限公司 一种导光板、背光模组和显示装置
CN103676315A (zh) * 2013-12-06 2014-03-26 京东方科技集团股份有限公司 一种导光板、背光源及液晶显示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3405834A4 (fr) * 2016-01-22 2019-06-26 LG Electronics Inc. -1- Dispositif d'affichage

Also Published As

Publication number Publication date
CN103676315A (zh) 2014-03-26

Similar Documents

Publication Publication Date Title
WO2015081692A1 (fr) Plaque de guide de lumière, source de rétroéclairage et appareil d'affichage à cristaux liquides
CN104456311B (zh) 背光模块及具有该背光模块的液晶显示装置
KR101775260B1 (ko) 색도 좌표와 색 영역 조절이 가능한 형광 필름
KR102242876B1 (ko) 백라이트 모듈용 광전환 필름, 백라이트 모듈 및 디스플레이 기기
JP6890470B2 (ja) フォトルミネセンス表示装置およびその製造方法
WO2017071344A1 (fr) Substrat de film coloré, panneau d'affichage et dispositif d'affichage
US20160380170A1 (en) White led, backlight module and liquid crystal display device
TW201606401A (zh) 背光模組及顯示裝置
KR20170074947A (ko) 퀀텀 닷 백라이트 모듈 및 디스플레이 장치
KR20120088273A (ko) 백라이트 유닛 및 그 제조 방법
KR20150040608A (ko) 양자점을 이용한 백라이트 유닛을 구비한 액정표시장치
WO2012027928A1 (fr) Module de rétroéclairage et composant optique associé
CN104155803A (zh) 背光模块及液晶显示装置
CN104456191B (zh) 背光模块及液晶显示装置
CN104503137A (zh) 背光模块及具有该背光模块的液晶显示器
WO2013120279A1 (fr) Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage à cristaux liquides
KR20110135097A (ko) 액정표시장치 모듈
US11054698B2 (en) Backlight module and display device
WO2016155115A1 (fr) Plaque de guidage de lumière, module de rétroéclairage la comprenant, et dispositif d'affichage à cristaux liquides
CN109375421A (zh) 液晶显示器
US20160377788A1 (en) Backlight module and liquid crystal display device using the same
WO2019085173A1 (fr) Affichage à cristaux liquides
CN110389470A (zh) 背光结构和显示装置
CN111665662B (zh) 照明装置以及显示装置
TW594256B (en) Light structure for panel display

Legal Events

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

Ref document number: 14868482

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 02.11.2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14868482

Country of ref document: EP

Kind code of ref document: A1