WO2017000323A1 - 背光模组和液晶显示器 - Google Patents

背光模组和液晶显示器 Download PDF

Info

Publication number
WO2017000323A1
WO2017000323A1 PCT/CN2015/084028 CN2015084028W WO2017000323A1 WO 2017000323 A1 WO2017000323 A1 WO 2017000323A1 CN 2015084028 W CN2015084028 W CN 2015084028W WO 2017000323 A1 WO2017000323 A1 WO 2017000323A1
Authority
WO
WIPO (PCT)
Prior art keywords
phosphor layer
blue light
green
red
backlight module
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/CN2015/084028
Other languages
English (en)
French (fr)
Inventor
姜宇锐
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.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan 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 Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Publication of WO2017000323A1 publication Critical patent/WO2017000323A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • 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
    • G02F1/1335—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

Definitions

  • the invention belongs to the technical field of liquid crystal display, and particularly relates to a backlight module and a liquid crystal display.
  • the backlight module of the prior art generally includes a light emitting diode and a light guide plate.
  • the light emitting diode comprises a blue chip and a phosphor layer.
  • the blue chip emits high-energy blue light (400-480 nm), some of which are absorbed by the mixed red and green phosphors in the phosphor layer, and emit red light (600-680 nm) and green light (500-580 nm). Then, blue light, red light, and green light are mixed to form white light and incident on the light guide plate.
  • the present invention provides a backlight module and a liquid crystal display.
  • a backlight module includes a blue light emitting chip, a red phosphor layer, and a green phosphor layer arranged in sequence along an optical path, wherein the red phosphor layer receives blue light from the blue light emitting chip, and the first portion is The blue light is converted into red light, and the green phosphor layer receives blue light from the second portion of the blue phosphor layer that passes through the red phosphor layer and converts it into green light, green light and blue light emitting chip The blue light passing through the third portion of the green phosphor layer and the red light from the red phosphor layer are mixed to form white light.
  • the blue light emitted by the blue light emitting chip sequentially passes through the red phosphor layer and the green phosphor layer to form white light, and the white light is used for the backlight module and realizes the screen display of the liquid crystal display panel.
  • the invention simplifies the process of the backlight module by setting the position between the blue light emitting chip, the red phosphor layer and the green phosphor layer, for example, the blue light emitting chip, the red phosphor layer and the green phosphor layer are integrated into one body.
  • the blue light emitting chip and the red phosphor layer are integrated into one body; on the other hand, the backlight module is formed to have a better light emitting effect by adjusting the thickness of the red phosphor layer and the green phosphor layer.
  • the blue light emitting chip, the red phosphor layer and the green phosphor layer can be separately disposed, or the red phosphor layer and the green phosphor layer can be integrated into one body, and the specific setting manner can be set according to actual needs. Make settings.
  • the backlight module further includes a fixing seat provided with a groove, and the blue light emitting chip, the red phosphor layer and the green phosphor layer are sequentially disposed in the groove from the inside to the outside.
  • the blue light emitting chip, the red phosphor layer and the green phosphor layer are simultaneously disposed in the recess of the fixing seat to make it integral, so as to be processed and assembled with other components in the backlight module.
  • the green phosphor layer is flush with the outer edge of the mount such that the mount has a flat end face.
  • the flat end surface makes the white light emitted by the blue phosphor chip and the green phosphor layer more uniform after the light emitted by the blue light emitting chip, and also improves the light utilization efficiency of the emitted white light.
  • the thickness of the green phosphor layer is equal to the thickness of the red phosphor layer.
  • the red light passes through the green phosphor layer for a longer period of time, thereby increasing the absorption of red light to the green light, thereby causing the final emitted blue light and red.
  • the ratio of light to green light there is less green light and more red light, which affects the display of color.
  • the thickness of the green phosphor layer is smaller than the thickness of the red phosphor layer, the time when the red light passes through the green phosphor layer It is shorter, thus reducing the absorption of green light by red light, so that the ratio of blue light, red light and green light is more green light, and less red light will affect the color display;
  • the thickness of the green phosphor layer is set to be equal to the thickness of the red phosphor layer, so that the ratio of blue light, red light and green light is more uniform, thereby achieving better color display.
  • the cross-sectional area of the grooves increases sequentially in the direction from the blue light emitting chip to the green phosphor layer.
  • This arrangement causes the groove to form a bevel in the direction of the blue light-emitting chip to the green phosphor layer, and light of various colors is reflected at the bevel, and the reflected light continues to be utilized, thereby maximally avoiding loss of light.
  • the inclination of the slope is designed as needed, and can be used to form the groove
  • the same light aperture is used to adapt to the structure of different backlight modules.
  • the backlight module includes a fixing seat provided with a groove and a light guiding plate disposed opposite to the groove, and the blue light emitting chip and the red phosphor layer are sequentially disposed in the groove from the inside to the outside, and the green phosphor layer is disposed.
  • the blue light emitting chip and the red phosphor layer are sequentially disposed in the grooves of the fixing seat, and the green phosphor layer is directly coated on the corresponding position of the light guiding plate, thereby removing the green phosphor layer.
  • the process is set in the groove to increase production efficiency.
  • the red phosphor layer is flush with the outer edge of the mount such that the mount has a flat end face.
  • the flat end surface makes the blue light emitted by the blue light emitting chip and the mixed light of the red light formed by the red phosphor layer more uniform, so that the white light formed when the uniformly emitted mixed light reaches the green phosphor layer It is also more uniform. This arrangement improves the light utilization efficiency of the light emitted by the blue light emitting chip, and the formed white light is better applied to the light guide plate to achieve a better display effect.
  • the green phosphor layer is a mixture of a plurality of green phosphors having different transmittances.
  • different green phosphors are excited by blue light to generate green light of different wavelengths, so that the emitted light forms a wider color gamut, thereby realizing a better liquid crystal panel.
  • the screen is displayed.
  • a plurality of red phosphors having different transmittances can be added to the red phosphor layer to further achieve a wider color gamut.
  • the outer peripheral wall of the mount is provided with pins that are connected to the blue light emitting chip by gold wires.
  • the solution is used to realize electrical conduction of the blue light emitting chip to realize blue light emitting chip emitting blue light.
  • a liquid crystal display according to the present invention includes the above backlight module.
  • the backlight module of the invention Compared with the existing backlight module, the backlight module of the invention has higher luminous efficiency on the one hand and better light extraction effect on the other hand. At the same time, the backlight module of the invention also has a simpler manufacturing process, which greatly improves the production efficiency of the backlight module.
  • FIG. 1 is a schematic structural view of a first embodiment of a backlight module according to the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of a backlight module in accordance with the present invention.
  • FIG. 1 is a schematic structural view of a backlight module 100 according to the present invention.
  • the backlight module 100 includes a blue light emitting chip 10, a red phosphor layer 20, and a green phosphor layer 30 which are sequentially disposed along an optical path.
  • the red phosphor layer 20 receives the blue light from the blue light emitting chip 10 and converts the first portion of the blue light into red light
  • the green phosphor layer 30 receives the second portion from the blue light emitting chip 10 through the red phosphor layer 20.
  • the blue light is converted into green light
  • the green light and the blue light from the third portion of the blue phosphor layer 30 passing through the green phosphor layer 30 and the red light from the red phosphor layer 20 are mixed to form white light.
  • the blue light emitted by the blue light emitting chip 10 passes through the red phosphor layer 20 and the green phosphor layer 30 in sequence to form white light, which is used in the backlight module 100 and realizes the screen display of the liquid crystal display panel.
  • the invention simplifies the process of the backlight module 100 by setting the position between the blue light emitting chip 10, the red phosphor layer 20 and the green phosphor layer 30, for example, the blue light emitting chip 10, the red phosphor layer 20 and the green fluorescent light.
  • the powder layer 30 is disposed in one body, or the blue light emitting chip 10 and the red phosphor layer 20 are integrally provided; on the other hand, the backlight module 100 is formed by adjusting the thickness of the red phosphor layer 20 and the green phosphor layer 30. Good light effect. It can be understood that the blue light emitting chip 10, the red phosphor layer 20, and the green phosphor layer 30 may be separately disposed, or the red phosphor 20 layer and the green phosphor layer 30 may be integrally provided. The method can be set according to actual needs.
  • the backlight module 100 further includes a fixing base 40 provided with a recess 41.
  • the blue light emitting chip 10, the red phosphor layer 20 and the green phosphor layer 30 are sequentially arranged from the inside to the outside. It is disposed in the groove 41.
  • the blue light emitting chip 10, the red phosphor layer 20 and the green phosphor layer 30 are simultaneously disposed in the recess 41 of the fixing base 40 to be integrated, so as to be processed and manufactured, and other components in the backlight module 100. Assembly.
  • the green phosphor layer 30 is flush with the outer edge of the fixing seat 40 to make the fixing seat 40 flat. End face.
  • the flat end face makes the light emitted by the blue light-emitting chip 10 through the red phosphor layer 20 and the green phosphor layer 30 more uniform, and also improves the light utilization efficiency of the emitted white light.
  • the thickness of the green phosphor layer 30 is equal to the thickness of the red phosphor layer 20.
  • the thickness of the green phosphor layer 30 is greater than the thickness of the red phosphor layer 20, the red light passes through the green phosphor layer 30 for a longer period of time, thereby increasing the amount of red light absorbed by the green light, thereby causing the final emission.
  • the ratio of blue light, red light and green light there is less green light and more red light, which affects the display of color; when the thickness of the green phosphor layer 30 is smaller than the thickness of the red phosphor layer 20, the red light passes through the green light.
  • the phosphor layer 30 has a shorter time, thereby reducing the absorption of red light by the red light, so that the ratio of blue light, red light and green light is more green light, and the red light is less, which also affects the color display.
  • the thickness of the green phosphor layer 30 is set to be equal to the thickness of the red phosphor layer 20, so that the ratio of blue light, red light and green light is more uniform, thereby achieving better color display.
  • the cross-sectional area of the groove 41 sequentially increases in the direction from the blue light-emitting chip 10 to the green phosphor layer 30.
  • This arrangement causes the groove 41 to form a slope 411 in the direction of the blue light-emitting chip 10 to the green phosphor layer 30, and light of various colors is reflected at the slope 411, and the reflected light continues to be utilized, thereby maximally avoiding The loss of light.
  • the inclination of the slope 411 is designed as needed, and can be used to form different light exit apertures for the grooves 41 so as to adapt to the structure of the different backlight modules 100.
  • the backlight module 100' includes a fixing base 40' provided with a recess 41' and a light guide plate 70' disposed opposite to the recess 41'.
  • the blue light emitting chip 10' The red phosphor layer 20' is disposed in the groove 41' from the inside to the outside, and the green phosphor layer 30' is disposed on the light guide plate 70' in a region opposite to the red phosphor layer 20'.
  • the blue light emitting chip 10' and the red phosphor layer 20' are sequentially disposed in the recess 41' of the fixing seat 40', and the green phosphor layer 30' is directly coated on the corresponding position of the light guiding plate 70'. That is, this removes the process of disposing the green phosphor layer 30' in the recess 41', thereby improving production efficiency.
  • the red phosphor layer 20' is flush with the outer edge of the mount 40' such that the mount 40' has a flat end face.
  • the flat end face makes the emission of the mixed light of blue light and red light formed by the blue light emitting layer 20' after the blue light emitted from the blue light emitting chip 10' is more uniform, and therefore, when the uniformly emitted mixed light reaches the green phosphor layer
  • the white light formed after 30' is also more uniform. This arrangement improves the light utilization efficiency of the light emitted by the blue light emitting chip 10' while making the formed white light better applied to the light guide plate 70' for better implementation.
  • the display effect is provided.
  • the green phosphor layer 30' is formed by mixing a plurality of green phosphors 31' having different transmittances.
  • different green phosphors 31' are excited by blue light to generate green light of different wavelengths, thereby forming a wider color gamut, and thus the emitted light forms a wider color gamut.
  • a better picture display of the LCD panel can be achieved.
  • a plurality of red phosphors 21' having different transmittances may be added to the red phosphor layer 20' to further achieve a wider color gamut.
  • the red phosphor 21 in the red phosphor layer 20 and the green phosphor 31 in the green phosphor layer 30 shown in FIG. 1 can also be the same as and similar to the above arrangement, and the operator can variously according to the color of the desired light. The type and amount of phosphors are matched.
  • the outer peripheral wall of the fixing base 40 and the fixing base 40' are respectively provided with pins 50 and pins 50', and the pins 50 and the blue light emitting chip 10 pass through the gold wire 60 poles.
  • the electrical connection is used to realize electrical conduction of the blue light emitting chip 10 to realize blue light emitting chip 10 to emit blue light.
  • the pin 50' is connected to the blue light emitting chip 10' by a gold wire 60'.
  • a liquid crystal display according to the present invention includes the above backlight module 100 or 100'.
  • the liquid crystal display to which the backlight module 100 or 100' is applied has higher luminous efficiency and better picture display.

Landscapes

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

Abstract

一种背光模组（100）包括沿光路布置的蓝光发光芯片（10）、红色荧光粉层（20）以及绿色荧光粉层（30）。红色荧光粉层（20）接收来自蓝光发光芯片（10）的蓝光并将第一部分的蓝光转化成红光，绿色荧光粉层（30）接收来自蓝光发光芯片（10）的穿过红色荧光粉层（20）的第二部分的蓝光并将其转化成绿光，绿光和来自蓝光发光芯片（10）的穿过绿色荧光粉层（30）的第三部分的蓝光以及来自红色荧光粉层（20）的红光混合而形成白光。具有更高的发光效率的同时实现了更好的出光效果。

Description

背光模组和液晶显示器
相关申请的交叉引用
本申请要求享有于2015年6月30日提交的名称为“背光模组和液晶显示器”的中国专利申请CN201510372224.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明属于液晶显示技术领域，具体涉及背光模组和液晶显示器。
背景技术
现有技术中的背光模组通常包括发光二极管和导光板。其中，发光二极管包括蓝光芯片和荧光粉层。蓝光芯片发出能量较高的蓝光(400-480nm)，其中一部分蓝光被荧光粉层中混合的红色和绿色荧光粉吸收，并激发出红光(600-680nm)和绿光(500-580nm)，随后蓝光、红光和绿光混合后形成白光入射到导光板。然而在这一过程中，并非所有由绿色荧光粉发出的绿光都射出发光二极管，而是有一部分绿光最终被红色荧光粉吸收而转换为红光，由于绿光在这一转换过程中转换效率较低，较多的绿光在这一过程中损失掉，因此降低了发光二极管的发光效率以及对色彩的显示效果。
针对上述技术存在的问题，在本领域中希望寻求一种具有更高发光效率以及更好的色彩显示效果的背光模组，以解决现有技术中的不足之处。
发明内容
为了进一步提高背光模组的发光效率并使背光模组具有更好的色彩显示效果，本发明提供了一种背光模组和一种液晶显示器。
根据本发明提供的一种背光模组，包括沿光路依次布置的蓝光发光芯片、红色荧光粉层以及绿色荧光粉层，其中，红色荧光粉层接收来自蓝光发光芯片的蓝光，并将第一部分的蓝光转化成红光，绿色荧光粉层接收来自蓝光发光芯片的穿过红色荧光粉层的第二部分的蓝光并将其转化成绿光，绿光和来自蓝光发光芯片 的穿过绿色荧光粉层的第三部分的蓝光以及来自红色荧光粉层的红光混合而形成白光。
本发明中的背光模组由蓝光发光芯片发出的蓝光依次经过红色荧光粉层和绿色荧光粉层后形成白光，该白光用于背光模组并实现液晶显示面板的画面显示。本发明一方面通过设置蓝光发光芯片、红色荧光粉层和绿色荧光粉层之间的位置来简化背光模组的制程，例如将蓝光发光芯片、红色荧光粉层和绿色荧光粉层设置成一体，或者将蓝光发光芯片、红色荧光粉层设置为一体等；另一方面通过调节红色荧光粉层和绿色荧光粉层的厚度来使背光模组形成更好的出光效果。可以理解的是，本发明也可将蓝光发光芯片、红色荧光粉层和绿色荧光粉层分别单独设置，或者将红色荧光粉层和绿色荧光粉层设置成一体，其具体设置方式可根据实际需要进行设定。
在一些实施方案中，背光模组还包括设置有凹槽的固定座，蓝光发光芯片、红色荧光粉层以及绿色荧光粉层由内向外依次设置在凹槽内。该方案将蓝光发光芯片、红色荧光粉层以及绿色荧光粉层同时设置在固定座的凹槽内，使其成为一个整体，以便其加工制造以及与背光模组中其他部件的组装。
在一些实施方案中，绿色荧光粉层与固定座的外缘平齐以使固定座具有平整的端面。该平整的端面使由蓝光发光芯片发出的光经红色荧光粉层和绿色荧光粉层后形成的白光出光更均匀，同时也提高了出射白光的光利用率。
在一些实施方案中，绿色荧光粉层的厚度等于红色荧光粉层的厚度。当绿色荧光粉层的厚度大于红色荧光粉层的厚度时，红光穿过绿光荧光粉层的时间较长，因此增加了红光对绿光的吸收量，从而使最终出射的蓝光、红光与绿光的配比中绿光较少，红光较多，影响色彩的显示；当绿色荧光粉层的厚度小于红色荧光粉层的厚度时，红光穿过绿光荧光粉层的时间较短，因此减少了红光对绿光的吸收量，从而使蓝光、红光与绿光的配比中绿光较多，红光较少，也会影响色彩的显示；而本方案中将绿色荧光粉层的厚度设置成与红色荧光粉层的厚度相等，则可使蓝光、红光与绿光的比例更均匀，从而实现了更好的色彩显示。
在一些实施方案中，凹槽的截面面积在自蓝光发光芯片至绿色荧光粉层的方向上依次增加。该设置使凹槽沿蓝光发光芯片至绿色荧光粉层的方向上形成斜面，各种颜色的光在该斜面处发生反射，经反射的光继续被利用，从而最大限度地避免了光的损失。优选地，根据需要设计斜面的倾斜度，可用于对凹槽形成不 同的出光口径，以便其适应不同的背光模组的结构。
在一些实施方案中，背光模组包括设置有凹槽的固定座以及与凹槽相对设置的导光板，蓝光发光芯片和红色荧光粉层由内向外依次设置在凹槽内，绿色荧光粉层设置在导光板上的与红色荧光粉层相对的区域。该方案中将，蓝光发光芯片和红色荧光粉层依次设置在固定座的凹槽内，同时将绿色荧光粉层直接涂覆在导光板的相应位置即可，这便除去了将绿色荧光粉层设置在凹槽内的制程，从而提高了生产效率。
在一些实施方案中，红色荧光粉层与固定座的外缘平齐以使固定座具有平整的端面。该平整的端面使由蓝光发光芯片发出的蓝光经红色荧光粉层后形成的蓝光和红光的混合光的出射更均匀，因此，当该均匀出射的混合光到达绿色荧光粉层后形成的白光也更为均匀，这种设置在提高了蓝光发光芯片发出的光的光利用率的同时，使形成的白光更好地应用于导光板，以实现更好的显示效果。
在一些实施方案中，绿色荧光粉层由多种具有不同透过率的绿色荧光粉混合而成。通过在绿色荧光粉层内添加不同的绿色荧光粉，使不同的绿色荧光粉被蓝光激发而产生不同波长的绿光，从而使出射的光形成更广的色域，进而可实现液晶面板更好的画面显示。同样地，红光荧光粉层内也可添加多种具有不同透过率的红色荧光粉，以进一步实现更广的色域。
在一些实施方案中，固定座的外周壁上设置有引脚，引脚与蓝光发光芯片通过金线极性连接。该方案用于实现蓝光发光芯片的电导通，以实现蓝光发光芯片出射蓝光。
根据本发明提供的一种液晶显示器，包括上述背光模组。
与现有的背光模组相比，本发明的背光模组一方面具有更高的发光效率，另一方面能够实现更好的出光效果。同时，本发明的背光模组还具有更简单的制作流程，大大提高了背光模组的生产效率。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1是根据本发明的背光模组的第一实施例的结构示意图；
图2是根据本发明的背光模组的第二实施例的结构示意图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明作进一步说明。
这里所介绍的细节是示例性的，并仅用来对本发明的实施例进行例证性讨论，它们的存在是为了提供被认为是对本发明的原理和概念方面的最有用和最易理解的描述。关于这一点，这里并没有试图对本发明的结构细节作超出于基本理解本发明所需的程度的介绍，本领域的技术人员通过说明书及其附图可以清楚地理解如何在实践中实施本发明的几种形式。
图1显示了根据本发明提供的一种背光模组100的结构示意图。该背光模组100包括沿光路依次布置的蓝光发光芯片10、红色荧光粉层20以及绿色荧光粉层30。其中，红色荧光粉层20接收来自蓝光发光芯片10的蓝光，并将第一部分的蓝光转化成红光，绿色荧光粉层30接收来自蓝光发光芯片10的穿过红色荧光粉层20的第二部分的蓝光并将其转化成绿光，绿光和来自蓝光发光芯片的穿过绿色荧光粉层30的第三部分的蓝光以及来自红色荧光粉层20的红光混合而形成白光。
本发明中由蓝光发光芯片10发出的蓝光依次经过红色荧光粉层20和绿色荧光粉层30后形成白光，该白光用于背光模组100并实现液晶显示面板的画面显示。本发明一方面通过设置蓝光发光芯片10、红色荧光粉层20和绿色荧光粉层30之间的位置来简化背光模组100的制程，例如将蓝光发光芯片10、红色荧光粉层20和绿色荧光粉层30设置成一体，或者将蓝光发光芯片10、红色荧光粉层20设置为一体等；另一方面通过调节红色荧光粉层20和绿色荧光粉层30的厚度来使背光模组100形成更好的出光效果。可以理解的是，本发明也可将蓝光发光芯片10、红色荧光粉层20和绿色荧光粉层30分别单独设置，或者将红色荧光粉20层和绿色荧光粉层30设置成一体，其具体设置方式可根据实际需要进行设定。
根据本发明，如图1所示的实施例中，背光模组100还包括设置有凹槽41的固定座40，蓝光发光芯片10、红色荧光粉层20以及绿色荧光粉层30由内向外依次设置在凹槽41内。该方案将蓝光发光芯片10、红色荧光粉层20以及绿色荧光粉层30同时设置在固定座40的凹槽41内，使其成为一个整体，以便其加工制造以及与背光模组100中其他部件的组装。
优选地，绿色荧光粉层30与固定座40的外缘平齐以使固定座40具有平整 的端面。该平整的端面使由蓝光发光芯片10发出的光经红色荧光粉层20和绿色荧光粉层30后形成的白光出光更均匀，同时也提高了出射白光的光利用率。
还优选地，绿色荧光粉层30的厚度等于红色荧光粉层20的厚度。当绿色荧光粉层30的厚度大于红色荧光粉层20的厚度时，红光穿过绿光荧光粉层30的时间较长，因此增加了红光对绿光的吸收量，从而使最终出射的蓝光、红光与绿光的配比中绿光较少，红光较多，影响色彩的显示；当绿色荧光粉层30的厚度小于红色荧光粉层20的厚度时，红光穿过绿光荧光粉层30的时间较短，因此减少了红光对绿光的吸收量，从而使蓝光、红光与绿光的配比中绿光较多，红光较少，也会影响色彩的显示；而本方案中将绿色荧光粉层30的厚度设置成与红色荧光粉层20的厚度相等，则可使蓝光、红光与绿光的比例更均匀，从而实现了较好的色彩显示。
如图1所示的实施例中，凹槽41的截面面积在自蓝光发光芯片10至绿色荧光粉层30的方向上依次增加。该设置使凹槽41沿蓝光发光芯片10至绿色荧光粉层30的方向上形成斜面411，各种颜色的光在该斜面411处发生反射，经反射的光继续被利用，从而最大限度地避免了光的损失。优选地，根据需要设计斜面411的倾斜度，可用于对凹槽41形成不同的出光口径，以便其适应不同的背光模组100的结构。
根据本发明，如图2所示的实施例中，背光模组100’包括设置有凹槽41’的固定座40’以及与凹槽41’相对设置的导光板70’，蓝光发光芯片10’和红色荧光粉层20’由内向外依次设置在凹槽41’内，绿色荧光粉层30’设置在导光板70’上的与红色荧光粉层20’相对的区域。该方案中将，蓝光发光芯片10’和红色荧光粉层20’依次设置在固定座40’的凹槽41’内，同时将绿色荧光粉层30’直接涂覆在导光板70’的相应位置即可，这便除去了将绿色荧光粉层30’设置在凹槽41’内的制程，从而提高了生产效率。
优选地，红色荧光粉层20’与固定座40’的外缘平齐以使固定座40’具有平整的端面。该平整的端面使由蓝光发光芯片10’发出的蓝光经红色荧光粉层20’后形成的蓝光和红光的混合光的出射更均匀，因此，当该均匀出射的混合光到达绿色荧光粉层30’后形成的白光也更为均匀，这种设置在提高了蓝光发光芯片10’发出的光的光利用率的同时，使形成的白光更好地应用于导光板70’，以实现更好的显示效果。
优选地，绿色荧光粉层30’由多种具有不同透过率的绿色荧光粉31’混合而成。通过在绿色荧光粉层30’内添加不同的绿色荧光粉31’，使不同的绿色荧光粉31’被蓝光激发而产生不同波长的绿光，从而使出射的光形成更广的色域，进而可实现液晶面板更好的画面显示。同样地，红光荧光粉层20’内也可添加多种具有不同透过率的红色荧光粉21’，以进一步实现更广的色域。图1中所示的红色荧光粉层20内的红色荧光粉21和绿色荧光粉层30内的绿色荧光粉31也可与上述设置相同和相似，操作人员可以根据所需出光的颜色对各种荧光粉的种类和数量进行配比。
根据本发明，如图1和图2所示，固定座40和固定座40’的外周壁上分别设置有引脚50和引脚50’，引脚50与蓝光发光芯片10通过金线60极性连接，用于实现蓝光发光芯片10的电导通，以实现蓝光发光芯片10出射蓝光。同样地，引脚50’与蓝光发光芯片10’通过金线60’极性连接。
根据本发明提供的一种液晶显示器，包括上述背光模组100或者100’。应用背光模组100或者100’的液晶显示器具有更高的发光效率以及更好的画面显示。
应注意的是，前面所述的例子仅以解释为目的，而不能认为是限制了本发明。虽然已经根据示例性实施例对本发明进行了描述，然而应当理解，这里使用的是描述性和说明性的语言，而不是限制性的语言。在当前所述的和修改的所附权利要求的范围内，在不脱离本发明的范围和精神的范围中，可以对本发明进行改变。尽管这里已经根据特定的方式、材料和实施例对本发明进行了描述，但本发明并不仅限于这里公开的细节；相反，本发明可扩展到例如在所附权利要求的范围内的所有等同功能的结构、方法和应用。

Claims (19)

  1. 一种背光模组，包括沿光路依次布置的蓝光发光芯片、红色荧光粉层以及绿色荧光粉层，其中，所述红色荧光粉层接收来自所述蓝光发光芯片的蓝光，并将第一部分的蓝光转化成红光，所述绿色荧光粉层接收来自所述蓝光发光芯片的穿过红色荧光粉层的第二部分的蓝光并将其转化成绿光，所述绿光和来自所述蓝光发光芯片的穿过绿色荧光粉层的第三部分的蓝光以及来自所述红色荧光粉层的红光混合而形成白光。
  2. 根据权利要求1所述的背光模组，其中，还包括设置有凹槽的固定座，所述蓝光发光芯片、所述红色荧光粉层以及绿色荧光粉层由内向外依次设置在所述凹槽内。
  3. 根据权利要求2所述的背光模组，其中，所述绿色荧光粉层与所述固定座的外缘平齐以使所述固定座具有平整的端面。
  4. 根据权利要求1所述的背光模组，其中，所述绿色荧光粉层的厚度等于所述红色荧光粉层的厚度。
  5. 根据权利要求2所述的背光模组，其中，所述绿色荧光粉层的厚度等于所述红色荧光粉层的厚度。
  6. 根据权利要求3所述的背光模组，其中，所述绿色荧光粉层的厚度等于所述红色荧光粉层的厚度。
  7. 根据权利要求2所述的背光模组，其中，所述凹槽的截面面积在自所述蓝光发光芯片至所述绿色荧光粉层的方向上依次增加。
  8. 根据权利要求3所述的背光模组，其中，所述凹槽的截面面积在自所述蓝光发光芯片至所述绿色荧光粉层的方向上依次增加。
  9. 根据权利要求1所述的背光模组，其中，包括设置有凹槽的固定座以及与所述凹槽相对设置的导光板，所述蓝光发光芯片和所述红色荧光粉层由内向外依次设置在所述凹槽内，所述绿色荧光粉层设置在所述导光板上的与所述红色荧光粉层相对的区域。
  10. 根据权利要求9所述的背光模组，其中，所述红色荧光粉层与所述固定座的外缘平齐以使所述固定座具有平整的端面。
  11. 根据权利要求1所述的背光模组，其中，所述绿色荧光粉层由多种具有 不同透过率的绿色荧光粉混合而成。
  12. 根据权利要求9所述的背光模组，其中，所述绿色荧光粉层由多种具有不同透过率的绿色荧光粉混合而成。
  13. 根据权利要求2所述的背光模组，其中，所述固定座的外周壁上设置有引脚，所述引脚与所述蓝光发光芯片通过金线极性连接。
  14. 根据权利要求9所述的背光模组，其中，所述固定座的外周壁上设置有引脚，所述引脚与所述蓝光发光芯片通过金线极性连接。
  15. 一种液晶显示器，包括背光模组，包括沿光路依次布置的蓝光发光芯片、红色荧光粉层以及绿色荧光粉层，其中，所述红色荧光粉层接收来自所述蓝光发光芯片的蓝光，并将第一部分的蓝光转化成红光，所述绿色荧光粉层接收来自所述蓝光发光芯片的穿过红色荧光粉层的第二部分的蓝光并将其转化成绿光，所述绿光和来自所述蓝光发光芯片的穿过绿色荧光粉层的第三部分的蓝光以及来自所述红色荧光粉层的红光混合而形成白光。
  16. 根据权利要求15所述的液晶显示器，其中，还包括设置有凹槽的固定座，所述蓝光发光芯片、所述红色荧光粉层以及绿色荧光粉层由内向外依次设置在所述凹槽内。
  17. 根据权利要求15所述的液晶显示器，其中，所述绿色荧光粉层的厚度等于所述红色荧光粉层的厚度。
  18. 根据权利要求15所述的液晶显示器，其中，包括设置有凹槽的固定座以及与所述凹槽相对设置的导光板，所述蓝光发光芯片和所述红色荧光粉层由内向外依次设置在所述凹槽内，所述绿色荧光粉层设置在所述导光板上的与所述红色荧光粉层相对的区域。
  19. 根据权利要求15所述的液晶显示器，其中，所述绿色荧光粉层由多种具有不同透过率的绿色荧光粉混合而成。
PCT/CN2015/084028 2015-06-30 2015-07-15 背光模组和液晶显示器 Ceased WO2017000323A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510372224.X 2015-06-30
CN201510372224.XA CN105137651B (zh) 2015-06-30 2015-06-30 背光模组和液晶显示器

Publications (1)

Publication Number Publication Date
WO2017000323A1 true WO2017000323A1 (zh) 2017-01-05

Family

ID=54723047

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/084028 Ceased WO2017000323A1 (zh) 2015-06-30 2015-07-15 背光模组和液晶显示器

Country Status (2)

Country Link
CN (1) CN105137651B (zh)
WO (1) WO2017000323A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110568663A (zh) * 2019-09-05 2019-12-13 深圳Tcl新技术有限公司 一种背光模组及显示装置
CN111948853A (zh) * 2020-08-20 2020-11-17 安徽芯瑞达科技股份有限公司 一种用于背光领域的侧入式高色域led模组
CN113741091A (zh) * 2021-08-17 2021-12-03 惠州视维新技术有限公司 背光模组和显示设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107065297A (zh) * 2016-12-08 2017-08-18 郭少平 一种高色域显示屏背光工艺方法
CN109270728B (zh) * 2018-11-30 2024-02-02 娄底市金鑫电子科技有限公司 基于量子彩光技术的北斗卫星导航高精密智能触摸一体机
CN110058449B (zh) * 2019-05-13 2020-11-24 深圳市华星光电技术有限公司 量子点液晶显示器
CN115574289A (zh) * 2022-10-21 2023-01-06 武汉海微科技有限公司 一种led背光模组及led显示屏

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101356656A (zh) * 2006-01-04 2009-01-28 罗姆股份有限公司 薄型发光二极管灯及其制造方法
CN101937911A (zh) * 2010-07-14 2011-01-05 深圳市华星光电技术有限公司 发光二极管封装构造及背光模块
CN102798060A (zh) * 2012-09-11 2012-11-28 深圳市华星光电技术有限公司 直下式背光模组
CN103292225A (zh) * 2013-06-28 2013-09-11 深圳市华星光电技术有限公司 一种led背光光源
CN103343943A (zh) * 2013-05-08 2013-10-09 深圳市华星光电技术有限公司 显示装置的背光模组以及白光led
US20140176866A1 (en) * 2012-12-21 2014-06-26 Hon Hai Precision Industry Co., Ltd. Led device and liquid crystal display device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101356656A (zh) * 2006-01-04 2009-01-28 罗姆股份有限公司 薄型发光二极管灯及其制造方法
CN101937911A (zh) * 2010-07-14 2011-01-05 深圳市华星光电技术有限公司 发光二极管封装构造及背光模块
CN102798060A (zh) * 2012-09-11 2012-11-28 深圳市华星光电技术有限公司 直下式背光模组
US20140176866A1 (en) * 2012-12-21 2014-06-26 Hon Hai Precision Industry Co., Ltd. Led device and liquid crystal display device
CN103343943A (zh) * 2013-05-08 2013-10-09 深圳市华星光电技术有限公司 显示装置的背光模组以及白光led
CN103292225A (zh) * 2013-06-28 2013-09-11 深圳市华星光电技术有限公司 一种led背光光源

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110568663A (zh) * 2019-09-05 2019-12-13 深圳Tcl新技术有限公司 一种背光模组及显示装置
CN111948853A (zh) * 2020-08-20 2020-11-17 安徽芯瑞达科技股份有限公司 一种用于背光领域的侧入式高色域led模组
CN113741091A (zh) * 2021-08-17 2021-12-03 惠州视维新技术有限公司 背光模组和显示设备

Also Published As

Publication number Publication date
CN105137651A (zh) 2015-12-09
CN105137651B (zh) 2017-12-05

Similar Documents

Publication Publication Date Title
WO2017000323A1 (zh) 背光模组和液晶显示器
CN109616011B (zh) 背光模组及显示装置
CN104483778B (zh) 发光装置、背光模组及液晶显示装置
US20150369988A1 (en) Backlight module and display device
JP5443959B2 (ja) 照明装置
CN101788737A (zh) 使用量子点荧光粉的显示装置
CN106990613A (zh) 一种背光源
CN105428497B (zh) 应用至背光源的led发光结构
CN105759500A (zh) 量子点背光模组及液晶电视
CN105301836A (zh) 直下式背光模组及显示装置
CN106501994A (zh) 一种量子点发光器件、背光模组及显示装置
WO2016141599A1 (zh) 一种背光模组及其灯条
WO2016169067A1 (zh) 背光模组和液晶显示器
CN105700240A (zh) 一种背光模组及背光色温调节方法、显示装置
WO2016155219A1 (zh) 一种显示器、背光模组及led光源装置
CN105336835A (zh) 一种led封装结构及其封装方法
CN105445994A (zh) 一种光源模块、背光模组及显示装置
CN107390432A (zh) 一种led光源、背光模组及液晶显示装置
KR101447244B1 (ko) 백라이트 유닛 및 이를 포함하는 액정표시장치
CN101294664A (zh) 高色温发光二极管光源系统及其制造方法
CN113888991B (zh) 一种发光面板、显示面板、背光模组和显示装置
KR101694702B1 (ko) Led 광원 유닛 및 이를 이용한 백라이트 어셈블리
US20200203320A1 (en) Backlight device and manufacturing method thereof
US9062847B2 (en) Method for manufacturing a phospor device and lighting apparatus comprising such phosphor device
CN206207030U (zh) 一种激光白光光源装置

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: 15896853

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15896853

Country of ref document: EP

Kind code of ref document: A1