WO2016155029A1 - 一种发光装置及液晶显示装置 - Google Patents

一种发光装置及液晶显示装置 Download PDF

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Publication number
WO2016155029A1
WO2016155029A1 PCT/CN2015/075939 CN2015075939W WO2016155029A1 WO 2016155029 A1 WO2016155029 A1 WO 2016155029A1 CN 2015075939 W CN2015075939 W CN 2015075939W WO 2016155029 A1 WO2016155029 A1 WO 2016155029A1
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WO
WIPO (PCT)
Prior art keywords
light emitting
wavelength conversion
light
distance
emitting element
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Application number
PCT/CN2015/075939
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English (en)
French (fr)
Inventor
张汉驰
周革革
Original Assignee
深圳市华星光电技术有限公司
武汉华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司, 武汉华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/651,343 priority Critical patent/US9562668B2/en
Publication of WO2016155029A1 publication Critical patent/WO2016155029A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/44—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating
    • H01L33/46—Reflective coating, e.g. dielectric Bragg reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/483—Containers
    • H01L33/486—Containers adapted for surface mounting

Definitions

  • the present invention relates to the field of displays, and in particular to a light emitting device and a liquid crystal display device.
  • a liquid crystal display device has been widely used as a display component of an electronic device in various electronic products, and an illuminating device is an important component in a liquid crystal display device for providing a backlight source to a liquid crystal display device.
  • the light emitting device includes a substrate 11; a light emitting element 12 is disposed on the substrate 11 to provide a light source including a body portion 121, an anode portion 122, a cathode portion 123; and a wavelength conversion unit 13 For converting the wavelength of light emitted by the light-emitting element 12.
  • the body portion is an important component of the light-emitting device, since the distance between each surface of the body portion and the corresponding surface of the wavelength conversion unit is not equal, such as between the left side surface of the body portion and the left side surface of the wavelength conversion unit. The distance is not equal to the distance between the upper surface of the body portion and the upper surface of the wavelength conversion unit, resulting in chromatic aberration of light emitted by the light-emitting device.
  • An object of the present invention is to provide a light-emitting device and a liquid crystal display device for solving the chromatic aberration of the emitted light due to the unequal distance between the surfaces of the main body portion and the corresponding surface of the wavelength conversion unit in the conventional light-emitting device. technical problem.
  • the present invention provides a light emitting device, including:
  • the light emitting element is configured to provide a light source, the light emitting element includes a body portion, an anode portion, and a cathode portion; the light emitting element has a first light emitting side surface, a second light emitting side surface, and a light emitting An upper surface, a light emitting lower surface;
  • wavelength conversion unit disposed on the light emitting element, wherein the wavelength conversion unit is configured to convert a wavelength of light emitted by the light emitting element, the wavelength conversion unit having a first wavelength conversion side surface, a second wavelength conversion side surface, a wavelength conversion upper surface, a wavelength conversion lower surface;
  • the difference between the first distance and the second distance is less than a preset value, wherein the first distance is a distance between the first light emitting side and the first wavelength conversion side or the second light emitting side a distance from the second wavelength conversion side, the second distance being a distance between the illumination upper surface and the wavelength conversion upper surface; the first wavelength conversion side and the first illumination side a distance between the second wavelength conversion side and the first light emitting side;
  • the shape of the connection between the first wavelength conversion side surface and the wavelength conversion upper surface is curved, and the shape of the connection between the second wavelength conversion side surface and the wavelength conversion upper surface is also curved;
  • the shape of the junction of the first illuminating side surface and the illuminating upper surface is curved, and the shape of the junction of the second illuminating side surface and the illuminating upper surface is also curved.
  • the light-emitting device further includes a reflection unit for guiding light emitted from the light-emitting element to the light source receiving portion.
  • the reflection unit is located below the substrate and on both sides of the substrate.
  • a light guide plate is further provided on both sides of the light-emitting device.
  • the present invention provides a light emitting device comprising: a substrate;
  • the light emitting element is configured to provide a light source, the light emitting element includes a body portion, an anode portion, and a cathode portion; the light emitting element has a first light emitting side surface, a second light emitting side surface, and a light emitting An upper surface, a light emitting lower surface;
  • wavelength conversion unit disposed on the light emitting element, wherein the wavelength conversion unit is configured to convert a wavelength of light emitted by the light emitting element, the wavelength conversion unit having a first wavelength conversion side surface, a second wavelength conversion side surface, a wavelength conversion upper surface, a wavelength conversion lower surface;
  • the difference between the first distance and the second distance is less than a preset value, wherein the first distance is a distance between the first light emitting side and the first wavelength conversion side or the second light emitting side a distance from the second wavelength conversion side, the second distance being a distance between the illumination upper surface and the wavelength conversion upper surface; the first wavelength conversion side and the first illumination side The distance between the second wavelength conversion side and the first light emitting side is smaller than the distance between the second wavelength conversion side.
  • the shape of the connection between the first wavelength conversion side surface and the wavelength conversion upper surface is curved, and the shape of the connection between the second wavelength conversion side surface and the wavelength conversion upper surface is also arc.
  • the shape of the junction of the first light-emitting side surface and the light-emitting upper surface is curved, and the shape of the junction of the second light-emitting side surface and the light-emitting upper surface is also curved.
  • the light-emitting device further includes a reflection unit for guiding light emitted from the light-emitting element to the light source receiving portion.
  • the reflection unit is located below the substrate and on both sides of the substrate.
  • a light guide plate is further provided on both sides of the light-emitting device.
  • the invention also provides a liquid crystal display device comprising:
  • the light emitting device comprises:
  • the light emitting element is configured to provide a light source, the light emitting element includes a body portion, an anode portion, and a cathode portion; the light emitting element has a first light emitting side surface, a second light emitting side surface, and a light emitting An upper surface, a light emitting lower surface;
  • wavelength conversion unit disposed on the light emitting element, wherein the wavelength conversion unit is configured to convert a wavelength of light emitted by the light emitting element, the wavelength conversion unit having a first wavelength conversion side surface, a second wavelength conversion side surface, a wavelength conversion upper surface, a wavelength conversion lower surface;
  • the difference between the first distance and the second distance is less than a preset value, wherein the first distance is a distance between the first light emitting side and the first wavelength conversion side or the second light emitting side a distance from the second wavelength conversion side, the second distance being a distance between the illumination upper surface and the wavelength conversion upper surface; the first wavelength conversion side and the first illumination side The distance between the second wavelength conversion side and the first light emitting side is smaller than the distance between the second wavelength conversion side.
  • a shape at which the first wavelength conversion side surface is connected to the wavelength conversion upper surface is curved, and a shape at which the second wavelength conversion side surface is connected to the wavelength conversion upper surface is also It is curved.
  • the shape at which the first light-emitting side surface is connected to the light-emitting upper surface is curved, and the shape at the junction of the second light-emitting side surface and the light-emitting upper surface is also curved.
  • the light-emitting device further includes a reflection unit for guiding light emitted from the light-emitting element to the light source receiving portion.
  • the reflection unit is located below the substrate and on both sides of the substrate.
  • the light-emitting device and the liquid crystal display device of the present invention by making the distance between each surface of the main body portion of the light-emitting device and the surface corresponding to the wavelength conversion unit equal, the chromatic aberration of light emitted from the light-emitting device is prevented, and the display effect is improved.
  • FIG. 1 is a schematic structural view of a prior art light emitting device
  • FIG. 2 is a schematic structural view of a light-emitting device of the present invention.
  • FIG. 3 is a schematic structural view of a light-emitting element of the present invention.
  • FIG. 4 is a schematic structural view of a wavelength conversion unit of the present invention.
  • FIG. 2 is a schematic structural view of a light emitting device according to the present invention.
  • the light-emitting device of the present invention includes a substrate 21, a light-emitting element 22, and a wavelength conversion unit 23; the light-emitting element 22 is disposed on the substrate 21 for providing a light source, and the wavelength conversion unit 23 is disposed.
  • the wavelength of the light emitted by the light-emitting element 22 is converted, and in general, the light-emitting element 22 emits blue light, which is converted by the wavelength conversion unit 23 Into white light.
  • the light-emitting element 22 includes a body portion 221, an anode portion 222, and a cathode portion 223.
  • the material of the body portion 221 is a light-emitting material. Referring to FIG. 3, the light-emitting element 22 has a three-dimensional structure and has a first light-emitting side surface 25, a second light emitting side surface 26, a light emitting upper surface 27, and a light emitting lower surface 28;
  • the wavelength conversion unit 23 has a first wavelength conversion side 29, a second wavelength conversion side 30, a wavelength conversion upper surface 31, a wavelength conversion lower surface 32;
  • a distance between the first wavelength conversion side surface 29 and the first light emitting side surface 25 is smaller than a distance between the second wavelength conversion side surface 30 and the first light emitting side surface 25; that is, the first wavelength conversion side surface 29 is located on the same side of the light-emitting device as the first light-emitting side surface 25, and the second wavelength-converting side surface 30 and the second light-emitting side surface 26 are located on the other side of the light-emitting device.
  • the distance between the first light emitting side surface 25 and the first wavelength conversion side surface 29 or the distance between the second light emitting side surface 26 and the second wavelength conversion side surface 30 is referred to as a first distance W1, which will be
  • the distance between the light emitting upper surface 27 and the wavelength conversion upper surface 31 is referred to as a second distance W2, wherein a difference between the first distance W1 and the second distance W2 is less than a preset value.
  • the preset value is a value close to 0, that is, the first distance is approximately equal to the second distance, and the difference between the preset value and 0 may be set according to the size of the liquid crystal display device.
  • the path lengths of the light emitted by the light-emitting elements in the light-emitting direction are approximately equal, and since the paths of the light are approximately equal, the energy dispersion of the light is also equal, and the light is colored due to the color and energy.
  • the energy dispersion of the components in the light-emitting direction is equal, so that the color of the light can be made uniform without chromatic aberration, thereby improving the liquid crystal display effect.
  • the shape of the connection between the first wavelength conversion side surface 29 and the wavelength conversion upper surface 31 is curved, and the second wavelength conversion side surface 30 is connected to the wavelength conversion upper surface 31.
  • the shape is also curved, and although the chromatic aberration can be greatly reduced after the above design, since the distance between the apex angle of the wavelength conversion unit 23 and the apex angle of the light-emitting element 22 is relatively large,
  • the apex angle region is set to an arc shape, preferably a circular shape, thereby reducing the distance between the apex angle region of the wavelength conversion unit and the apex angle region of the illuminating element, further reducing chromatic aberration.
  • the shape of the junction of the first illuminating side surface 25 and the illuminating upper surface 27 is curved, and the shape of the junction of the second illuminating side surface 26 and the illuminating upper surface 27 is also It is curved. More preferably, the arc at the vertex of the light-emitting element 22 matches the arc at the vertex of the wavelength conversion unit 23, thereby reducing the apex angle region of the wavelength conversion unit and the apex region of the illuminating element The difference in distance.
  • the distance between the apex angle region of the wavelength conversion unit and the apex angle region of the illuminating element can be uniformly reduced, ensuring the top
  • the angle between the corner area and the non-apex angle area is equal, which further improves the display effect.
  • the light emitting device further includes a reflecting unit 24 for guiding the light emitted by the light emitting element 22 to the light source receiving portion.
  • the light source receiving portion is, for example, a liquid crystal display panel light entrance port, so that waste of the light source can be avoided by providing the reflecting unit.
  • the reflection unit 24 is located below the substrate 21 and on both sides of the substrate 21. Since the light source receiving portion is generally located above the light emitting device, light emitted downward from the light emitting device cannot be input into the liquid crystal display panel, and thus a reflecting unit is disposed here to emit downwardly emitted light to the liquid crystal display. The light entrance of the panel can further reduce the waste of the light source.
  • a light guide plate can be disposed on both sides of the light-emitting device, and the light guide plate can guide the light emitted from the light-emitting device to the liquid crystal display panel to better reduce the waste of the light source.
  • the light-emitting device of the present invention by making the distance between each surface of the main body portion of the light-emitting device and the surface corresponding to the wavelength conversion unit equal, the chromatic aberration of light emitted from the light-emitting device is prevented, and the display effect is improved.
  • the present invention also provides a liquid crystal display device comprising: a liquid crystal display panel and a light emitting device; wherein the liquid crystal display panel can include an array substrate, a color film substrate, and a liquid crystal layer, the array substrate including data lines and scan lines and data lines And a plurality of pixel units defined by the scan line, the color filter substrate is disposed opposite to the array substrate, and the color filter substrate may include a black matrix;
  • the light-emitting device includes a substrate 21, a light-emitting element 22, and a wavelength conversion unit 23; the light-emitting element 22 is disposed on the substrate 21 for providing a light source, and the wavelength conversion unit 23 is disposed at The light-emitting element 22 is configured to convert the wavelength of the light emitted by the light-emitting element 22, and in general, the light-emitting element 22 emits blue light, which is converted by the wavelength conversion unit 23 to become White light.
  • the light-emitting element 22 includes a body portion 221, an anode portion 222, and a cathode portion 223.
  • the material of the body portion 221 is a light-emitting material. Referring to FIG. 3, the light-emitting element 22 has a three-dimensional structure and has a first light-emitting side surface 25, a second light emitting side surface 26, a light emitting upper surface 27, and a light emitting lower surface 28;
  • the wavelength conversion unit 23 has a first wavelength conversion side 29, a second wavelength conversion side 30, a wavelength conversion upper surface 31, a wavelength conversion lower surface 32;
  • a distance between the first wavelength conversion side surface 29 and the first light emitting side surface 25 is smaller than a distance between the second wavelength conversion side surface 30 and the first light emitting side surface 25; that is, the first wavelength conversion side surface 29 is located on the same side of the light-emitting device as the first light-emitting side surface 25, and the second wavelength-converting side surface 30 and the second light-emitting side surface 26 are located on the other side of the light-emitting device.
  • the distance between the first light emitting side surface 25 and the first wavelength conversion side surface 29 or the distance between the second light emitting side surface 26 and the second wavelength conversion side surface 30 is referred to as a first distance W1, which will be
  • the distance between the light emitting upper surface 27 and the wavelength conversion upper surface 31 is referred to as a second distance W2
  • the preset value is a value close to 0, that is, the first distance is approximately equal to the second distance
  • the difference between the preset value and 0 can be set according to the size of the liquid crystal display device.
  • the path lengths of the light emitted by the light-emitting elements in the light-emitting direction are approximately equal, and since the paths of the light are approximately equal, the energy dispersion of the light is also equal, and the light is colored due to the color and energy.
  • the energy dispersion of the components in the light-emitting direction is equal, so that the color of the light can be made uniform without chromatic aberration, thereby improving the liquid crystal display effect.
  • the shape of the connection between the first wavelength conversion side surface 29 and the wavelength conversion upper surface 31 is curved, and the second wavelength conversion side surface 30 is connected to the wavelength conversion upper surface 31.
  • the shape is also curved, and although the chromatic aberration can be greatly reduced after the above design, since the distance between the apex angle of the wavelength conversion unit 23 and the apex angle of the light-emitting element 22 is relatively large,
  • the apex angle region is set to an arc shape, preferably a circular shape, thereby reducing the distance between the apex angle region of the wavelength conversion unit and the apex angle region of the illuminating element, further reducing chromatic aberration.
  • the shape of the junction of the first illuminating side surface 25 and the illuminating upper surface 27 is curved, and the shape of the junction of the second illuminating side surface 26 and the illuminating upper surface 27 is also It is curved. More preferably, the arc at the vertex of the light-emitting element 22 matches the arc at the vertex of the wavelength conversion unit 23, thereby reducing the apex angle region of the wavelength conversion unit and the apex region of the illuminating element The difference in distance.
  • the distance between the apex angle region of the wavelength conversion unit and the apex angle region of the illuminating element can be uniformly reduced, ensuring the top
  • the angle between the corner area and the non-apex angle area is equal, which further improves the display effect.
  • the light emitting device further includes a reflecting unit 24 for guiding the light emitted by the light emitting element 22 to the light source receiving portion.
  • the light source receiving portion is, for example, a liquid crystal display panel light entrance port, so that waste of the light source can be avoided by providing the reflecting unit.
  • the reflection unit 24 is located below the substrate 21 and on both sides of the substrate 21. Since the light source receiving portion is generally located above the light emitting device, light emitted downward from the light emitting device cannot be input into the liquid crystal display panel, and thus a reflecting unit is disposed here to emit downwardly emitted light to the liquid crystal display. The light entrance of the panel can further reduce the waste of the light source.
  • a light guide plate can be disposed on both sides of the light-emitting device, and the light guide plate can guide the light emitted from the light-emitting device to the liquid crystal display panel to better reduce the waste of the light source.
  • the liquid crystal display device of the present invention may employ any of the above-described light-emitting devices, and the light-emitting device has been described above, and will not be described herein.
  • liquid crystal display device of the present invention by making the distance between each surface of the main body portion of the light-emitting device and the surface corresponding to the wavelength conversion unit equal, the chromatic aberration of light emitted from the light-emitting device is prevented, and the display effect is improved.

Abstract

一种发光装置及液晶显示装置，在所述发光装置中，第一距离（W1）与第二距离（W2）之间的差值小于预设值，所述第一距离（W1）为发光元件（22）的第一发光侧面（25）与波长转换单元（23）的第一波长转换侧面（29）之间的距离或者第二发光侧面（26）与第二波长转换侧面（30）之间的距离，所述第二距离（W2）为发光元件（22）的发光上表面（27）与波长转换单元（23）的波长转换上表面（31）之间的距离。

Description

一种发光装置及液晶显示装置 技术领域
本发明涉及显示器领域，特别是涉及一种发光装置及液晶显示装置。
 背景技术
目前，液晶显示装置作为电子设备的显示部件，已经广泛的应用于各种电子产品中，发光装置是液晶显示装置中的一个重要部件，用于向液晶显示装置提供背光光源。
一般情况下，如图1所示，所述发光装置包括基底11；发光元件12设置在基底11上，以提供光源，其包括本体部121、阳极部122、阴极部123；以及波长转换单元13，用于对发光元件12发射的光的波长进行转换。
然而，本体部作为发光装置重要的组成部件，由于本体部的各面与波长转换单元相对应面之间的距离不等，譬如本体部的左侧面与波长转换单元的左侧面之间的距离，与本体部的上表面与波长转换单元的上表面之间的距离不等，从而导致发光装置发出的光产生色差。
故，有必要提供一种发光装置及液晶显示装置，以解决现有技术所存在的问题。
 技术问题
本发明的目的在于提供一种发光装置及液晶显示装置，以解决现有的发光装置由于其本体部的各表面与波长转换单元对应表面之间的距离不等，从而导致发出的光出现色差的技术问题。
 技术解决方案
为解决上述问题，本发明提供一种发光装置，其包括：
基底；
发光元件，设置在所述基底上，所述发光元件用于提供光源，所述发光元件包括本体部、阳极部、阴极部；所述发光元件具有第一发光侧面、第二发光侧面、一发光上表面、一发光下表面；以及
波长转换单元，设置在所述发光元件上，所述波长转换单元用于对所述发光元件发射的光的波长进行转换，所述波长转换单元具有第一波长转换侧面、第二波长转换侧面、一波长转换上表面、一波长转换下表面；
其中第一距离与第二距离之间的差值小于预设值，其中所述第一距离为所述第一发光侧面与所述第一波长转换侧面之间的距离或者所述第二发光侧面与所述第二波长转换侧面之间的距离，所述第二距离为所述发光上表面与所述波长转换上表面之间的距离；所述第一波长转换侧面与所述第一发光侧面之间的距离小于所述第二波长转换侧面与所述第一发光侧面之间的距离；
所述第一波长转换侧面与所述波长转换上表面连接处的形状为弧形，所述第二波长转换侧面与所述波长转换上表面连接处的形状也为弧形；
所述第一发光侧面与所述发光上表面连接处的形状为弧形，所述第二发光侧面与所述发光上表面连接处的形状也为弧形。
在本发明的发光装置中，所述发光装置还包括反射单元，所述反射单元用于将发光元件发射的光向光源接收部进行引导。
在本发明的发光装置中，所述反射单元位于所述基底的下方及所述基底的两侧。
在本发明的发光装置中，在所述发光装置的两侧还设置有导光板。
为解决上述问题，本发明提供一种发光装置，其包括：基底；
发光元件，设置在所述基底上，所述发光元件用于提供光源，所述发光元件包括本体部、阳极部、阴极部；所述发光元件具有第一发光侧面、第二发光侧面、一发光上表面、一发光下表面；以及
波长转换单元，设置在所述发光元件上，所述波长转换单元用于对所述发光元件发射的光的波长进行转换，所述波长转换单元具有第一波长转换侧面、第二波长转换侧面、一波长转换上表面、一波长转换下表面；
其中第一距离与第二距离之间的差值小于预设值，其中所述第一距离为所述第一发光侧面与所述第一波长转换侧面之间的距离或者所述第二发光侧面与所述第二波长转换侧面之间的距离，所述第二距离为所述发光上表面与所述波长转换上表面之间的距离；所述第一波长转换侧面与所述第一发光侧面之间的距离小于所述第二波长转换侧面与所述第一发光侧面之间的距离。
在本发明的发光装置中，所述第一波长转换侧面与所述波长转换上表面连接处的形状为弧形，所述第二波长转换侧面与所述波长转换上表面连接处的形状也为弧形。
在本发明的发光装置中，所述第一发光侧面与所述发光上表面连接处的形状为弧形，所述第二发光侧面与所述发光上表面连接处的形状也为弧形。
在本发明的发光装置中，所述发光装置还包括反射单元，所述反射单元用于将发光元件发射的光向光源接收部进行引导。
在本发明的发光装置中，所述反射单元位于所述基底的下方及所述基底的两侧。
在本发明的发光装置中，在所述发光装置的两侧还设置有导光板。
本发明还提供一种液晶显示装置，其包括：
液晶显示面板；
以及发光装置；
其中所述发光装置包括：
基底；
发光元件，设置在所述基底上，所述发光元件用于提供光源，所述发光元件包括本体部、阳极部、阴极部；所述发光元件具有第一发光侧面、第二发光侧面、一发光上表面、一发光下表面；以及
波长转换单元，设置在所述发光元件上，所述波长转换单元用于对所述发光元件发射的光的波长进行转换，所述波长转换单元具有第一波长转换侧面、第二波长转换侧面、一波长转换上表面、一波长转换下表面；
其中第一距离与第二距离之间的差值小于预设值，其中所述第一距离为所述第一发光侧面与所述第一波长转换侧面之间的距离或者所述第二发光侧面与所述第二波长转换侧面之间的距离，所述第二距离为所述发光上表面与所述波长转换上表面之间的距离；所述第一波长转换侧面与所述第一发光侧面之间的距离小于所述第二波长转换侧面与所述第一发光侧面之间的距离。
在本发明的液晶显示装置中，所述第一波长转换侧面与所述波长转换上表面连接处的形状为弧形，所述第二波长转换侧面与所述波长转换上表面连接处的形状也为弧形。
在本发明的液晶显示装置中，所述第一发光侧面与所述发光上表面连接处的形状为弧形，所述第二发光侧面与所述发光上表面连接处的形状也为弧形。
在本发明的液晶显示装置中，所述发光装置还包括反射单元，所述反射单元用于将发光元件发射的光向光源接收部进行引导。
在本发明的液晶显示装置中，所述反射单元位于所述基底的下方及所述基底的两侧。
 有益效果
本发明的发光装置及液晶显示装置，通过使发光装置的本体部的各表面与波长转换单元对应表面之间的距离相等，从而避免发光装置发出的光出现色差，提高了显示效果。
 附图说明
图1为现有技术的发光装置的结构示意图；
图2为本发明的发光装置的结构示意图；
图3为本发明的发光元件的结构示意图；
图4为本发明的波长转换单元的结构示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，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，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
在图中，结构相似的单元是以相同标号表示。
请参照图2，图2为本发明的发光装置的结构示意图；
本发明的发光装置，如图2所示，包括基底21、发光元件22、波长转换单元23；所述发光元件22设置在所述基底21上，用来提供光源，所述波长转换单元23设置在所述发光元件22上，用来对所述发光元件22发射的光的波长进行转换，一般情况下所述发光元件22发出蓝色的光，通过所述波长转换单元23的转换后，变成白色的光。
所述发光元件22包括本体部221、阳极部222、阴极部223；所述本体部221的材料为发光材料，结合图3，所述发光元件22为立体结构，具有第一发光侧面25、第二发光侧面26、一发光上表面27、一发光下表面28；
结合图4，所述波长转换单元23具有第一波长转换侧面29、第二波长转换侧面30、一波长转换上表面31、一波长转换下表面32；
所述第一波长转换侧面29与所述第一发光侧面25之间的距离小于所述第二波长转换侧面30与所述第一发光侧面25之间的距离；即所述第一波长转换侧面29与所述第一发光侧面25位于所述发光装置的同一侧，所述第二波长转换侧面30与所述第二发光侧面26位于所述发光装置的另外一侧。
将所述第一发光侧面25与所述第一波长转换侧面29之间的距离或者所述第二发光侧面26与所述第二波长转换侧面30之间的距离称为第一距离W1，将所述发光上表面27与所述波长转换上表面31之间的距离称为第二距离W2，其中所述第一距离W1与所述第二距离W2之间的差值小于预设值，所述预设值为接近0的值，即所述第一距离约等于所述第二距离，可根据液晶显示装置的尺寸设置所述预设值与0之间的差值大小。
由于第一距离约等于第二距离，使得发光元件沿出光方向发出的光的路径长度近似相等，由于光的路径近似相等，使得光的能量分散也相等，由于光的颜色和能量相关，在发光元件沿出光方向的能量分散相等，因而可以使得光的颜色均匀，不会出现色差，进而提高液晶显示效果。
优选地，如图4所示，所述第一波长转换侧面29与所述波长转换上表面31连接处的形状为弧形，所述第二波长转换侧面30与所述波长转换上表面31连接处的形状也为弧形，虽然经过上述设计后，能够大幅度地降低色差，但是由于所述波长转换单元23的顶角与所述发光元件22的顶角之间的距离还是比较大，因此将顶角区域设置为弧形，优选为圆形，从而缩减了波长转换单元的顶角区域与所述发光元件顶角区域之间的距离，进一步减少了色差。
优选地，如图3所示，所述第一发光侧面25与所述发光上表面27连接处的形状为弧形，所述第二发光侧面26与所述发光上表面27连接处的形状也为弧形。较优选地，所述发光元件22顶角处的弧形与所述波长转换单元23顶角处的弧形相匹配，从而缩减波长转换单元的顶角区域与所述发光元件顶角区域之间的距离差异。通过将所述发光元件的将顶角区域也设置为弧形，优选为圆形，能够均匀地缩减了波长转换单元的顶角区域与所述发光元件顶角区域之间的距离，确保了顶角区域与非顶角区域中光的路径相等，能够进一步提高显示效果。
优选地，结合图2，所述发光装置还包括反射单元24，所述反射单元24用于将所述发光元件22发射的光向光源接收部进行引导。此处的光源接收部譬如为液晶显示面板入光口，因而通过设置反射单元能够避免光源浪费。
优选地，所述反射单元24位于所述基底21的下方及所述基底21的两侧。由于光源接收部一般是位于所述发光装置的上方，因此所述发光装置向下方发出的光不能输入到液晶显示面板中，因此在此处设置反射单元，将向下发出的光发射到液晶显示面板的入光口处，能进一步地降低光源浪费。
优选地，在所述发光装置的两侧还可设置导光板，所述导光板能够将发光装置向两侧发出的光引导到液晶显示面板中，能更好地降低光源浪费。
本发明的发光装置，通过使发光装置的本体部的各表面与波长转换单元对应表面之间的距离相等，从而避免发光装置发出的光出现色差，提高了显示效果。
本发明还提供一种液晶显示装置，其包括：液晶显示面板及发光装置；其中液晶显示面板可包括阵列基板、彩膜基板、液晶层，所述阵列基板包括数据线和扫描线以及由数据线和扫描线限定的多个像素单元，所述彩膜基板与所述阵列基板相对设置，所述彩膜基板可包括黑色矩阵；
所述发光装置，如图2所示，包括基底21、发光元件22、波长转换单元23；所述发光元件22设置在所述基底21上，用来提供光源，所述波长转换单元23设置在所述发光元件22上，用来对所述发光元件22发射的光的波长进行转换，一般情况下所述发光元件22发出蓝色的光，通过所述波长转换单元23的转换后，变成白色的光。
所述发光元件22包括本体部221、阳极部222、阴极部223；所述本体部221的材料为发光材料，结合图3，所述发光元件22为立体结构，具有第一发光侧面25、第二发光侧面26、一发光上表面27、一发光下表面28；
结合图4，所述波长转换单元23具有第一波长转换侧面29、第二波长转换侧面30、一波长转换上表面31、一波长转换下表面32；
所述第一波长转换侧面29与所述第一发光侧面25之间的距离小于所述第二波长转换侧面30与所述第一发光侧面25之间的距离；即所述第一波长转换侧面29与所述第一发光侧面25位于所述发光装置的同一侧，所述第二波长转换侧面30与所述第二发光侧面26位于所述发光装置的另外一侧。
将所述第一发光侧面25与所述第一波长转换侧面29之间的距离或者所述第二发光侧面26与所述第二波长转换侧面30之间的距离称为第一距离W1，将所述发光上表面27与所述波长转换上表面31之间的距离称为第二距离W2，所述预设值为接近0的值，即所述第一距离约等于所述第二距离，可根据液晶显示装置的尺寸设置所述预设值与0之间的差值大小。
由于第一距离约等于第二距离，使得发光元件沿出光方向发出的光的路径长度近似相等，由于光的路径近似相等，使得光的能量分散也相等，由于光的颜色和能量相关，在发光元件沿出光方向的能量分散相等，因而可以使得光的颜色均匀，不会出现色差，进而提高液晶显示效果。
优选地，如图4所示，所述第一波长转换侧面29与所述波长转换上表面31连接处的形状为弧形，所述第二波长转换侧面30与所述波长转换上表面31连接处的形状也为弧形，虽然经过上述设计后，能够大幅度地降低色差，但是由于所述波长转换单元23的顶角与所述发光元件22的顶角之间的距离还是比较大，因此将顶角区域设置为弧形，优选为圆形，从而缩减了波长转换单元的顶角区域与所述发光元件顶角区域之间的距离，进一步减少了色差。
优选地，如图3所示，所述第一发光侧面25与所述发光上表面27连接处的形状为弧形，所述第二发光侧面26与所述发光上表面27连接处的形状也为弧形。较优选地，所述发光元件22顶角处的弧形与所述波长转换单元23顶角处的弧形相匹配，从而缩减波长转换单元的顶角区域与所述发光元件顶角区域之间的距离差异。通过将所述发光元件的将顶角区域也设置为弧形，优选为圆形，能够均匀地缩减了波长转换单元的顶角区域与所述发光元件顶角区域之间的距离，确保了顶角区域与非顶角区域中光的路径相等，能够进一步提高显示效果。
优选地，结合图2，所述发光装置还包括反射单元24，所述反射单元24用于将所述发光元件22发射的光向光源接收部进行引导。此处的光源接收部譬如为液晶显示面板入光口，因而通过设置反射单元能够避免光源浪费。
优选地，所述反射单元24位于所述基底21的下方及所述基底21的两侧。由于光源接收部一般是位于所述发光装置的上方，因此所述发光装置向下方发出的光不能输入到液晶显示面板中，因此在此处设置反射单元，将向下发出的光发射到液晶显示面板的入光口处，能进一步地降低光源浪费。
优选地，在所述发光装置的两侧还可设置导光板，所述导光板能够将发光装置向两侧发出的光引导到液晶显示面板中，能更好地降低光源浪费。
本发明的液晶显示装置可以采用上述任何一种发光装置、鉴于所述发光装置在上文已有描述，在此不再赘述。
本发明的液晶显示装置，通过使发光装置的本体部的各表面与波长转换单元对应表面之间的距离相等，从而避免发光装置发出的光出现色差，提高了显示效果。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (15)

  1. 一种发光装置，其包括：
    基底；
    发光元件，设置在所述基底上，所述发光元件用于提供光源，所述发光元件包括本体部、阳极部、阴极部；所述发光元件具有第一发光侧面、第二发光侧面、一发光上表面、一发光下表面；以及
    波长转换单元，设置在所述发光元件上，所述波长转换单元用于对所述发光元件发射的光的波长进行转换，所述波长转换单元具有第一波长转换侧面、第二波长转换侧面、一波长转换上表面、一波长转换下表面；
    其中第一距离与第二距离之间的差值小于预设值，其中所述第一距离为所述第一发光侧面与所述第一波长转换侧面之间的距离或者所述第二发光侧面与所述第二波长转换侧面之间的距离，所述第二距离为所述发光上表面与所述波长转换上表面之间的距离；所述第一波长转换侧面与所述第一发光侧面之间的距离小于所述第二波长转换侧面与所述第一发光侧面之间的距离；
    所述第一波长转换侧面与所述波长转换上表面连接处的形状为弧形，所述第二波长转换侧面与所述波长转换上表面连接处的形状也为弧形；
    所述第一发光侧面与所述发光上表面连接处的形状为弧形，所述第二发光侧面与所述发光上表面连接处的形状也为弧形。
  2. 根据权利要求1所述的发光装置，其中所述发光装置还包括反射单元，所述反射单元用于将发光元件发射的光向光源接收部进行引导。
  3. 根据权利要求1所述的发光装置，其中所述反射单元位于所述基底的下方及所述基底的两侧。
  4. 根据权利要求1所述的发光装置，其中在所述发光装置的两侧还设置有导光板。
  5. 一种发光装置，其包括：
    基底；
    发光元件，设置在所述基底上，所述发光元件用于提供光源，所述发光元件包括本体部、阳极部、阴极部；所述发光元件具有第一发光侧面、第二发光侧面、一发光上表面、一发光下表面；以及
    波长转换单元，设置在所述发光元件上，所述波长转换单元用于对所述发光元件发射的光的波长进行转换，所述波长转换单元具有第一波长转换侧面、第二波长转换侧面、一波长转换上表面、一波长转换下表面；
    其中第一距离与第二距离之间的差值小于预设值，其中所述第一距离为所述第一发光侧面与所述第一波长转换侧面之间的距离或者所述第二发光侧面与所述第二波长转换侧面之间的距离，所述第二距离为所述发光上表面与所述波长转换上表面之间的距离；所述第一波长转换侧面与所述第一发光侧面之间的距离小于所述第二波长转换侧面与所述第一发光侧面之间的距离。
  6. 根据权利要求5所述的发光装置，其中所述第一波长转换侧面与所述波长转换上表面连接处的形状为弧形，所述第二波长转换侧面与所述波长转换上表面连接处的形状也为弧形。
  7. 根据权利要求5所述的发光装置，其中所述第一发光侧面与所述发光上表面连接处的形状为弧形，所述第二发光侧面与所述发光上表面连接处的形状也为弧形。
  8. 根据权利要求5所述的发光装置，其中所述发光装置还包括反射单元，所述反射单元用于将发光元件发射的光向光源接收部进行引导。
  9. 根据权利要求5所述的发光装置，其中所述反射单元位于所述基底的下方及所述基底的两侧。
  10. 根据权利要求5所述的发光装置，其中在所述发光装置的两侧还设置有导光板。
  11. 一种液晶显示装置，其包括：
    液晶显示面板；
    以及发光装置；
    其中所述发光装置包括：
    基底；
    发光元件，设置在所述基底上，所述发光元件用于提供光源，所述发光元件包括本体部、阳极部、阴极部；所述发光元件具有第一发光侧面、第二发光侧面、一发光上表面、一发光下表面；以及
    波长转换单元，设置在所述发光元件上，所述波长转换单元用于对所述发光元件发射的光的波长进行转换，所述波长转换单元具有第一波长转换侧面、第二波长转换侧面、一波长转换上表面、一波长转换下表面；
    其中第一距离与第二距离之间的差值小于预设值，其中所述第一距离为所述第一发光侧面与所述第一波长转换侧面之间的距离或者所述第二发光侧面与所述第二波长转换侧面之间的距离，所述第二距离为所述发光上表面与所述波长转换上表面之间的距离；所述第一波长转换侧面与所述第一发光侧面之间的距离小于所述第二波长转换侧面与所述第一发光侧面之间的距离。
  12. 根据权利要求11所述的液晶显示装置，其中
    所述第一波长转换侧面与所述波长转换上表面连接处的形状为弧形，所述第二波长转换侧面与所述波长转换上表面连接处的形状也为弧形。
  13. 根据权利要求11所述的液晶显示装置，其中所述第一发光侧面与所述发光上表面连接处的形状为弧形，所述第二发光侧面与所述发光上表面连接处的形状也为弧形。
  14. 根据权利要求11所述的液晶显示装置，其中所述发光装置还包括反射单元，所述反射单元用于将发光元件发射的光向光源接收部进行引导。
  15. 根据权利要求11所述的液晶显示装置，其中所述反射单元位于所述基底的下方及所述基底的两侧。
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