WO2017202074A1 - 导光板及其模具和制作方法、背光模组及显示装置 - Google Patents

导光板及其模具和制作方法、背光模组及显示装置 Download PDF

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Publication number
WO2017202074A1
WO2017202074A1 PCT/CN2017/073901 CN2017073901W WO2017202074A1 WO 2017202074 A1 WO2017202074 A1 WO 2017202074A1 CN 2017073901 W CN2017073901 W CN 2017073901W WO 2017202074 A1 WO2017202074 A1 WO 2017202074A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
light
mold
manufacturing
Prior art date
Application number
PCT/CN2017/073901
Other languages
English (en)
French (fr)
Inventor
程鸿飞
张玉欣
Original Assignee
京东方科技集团股份有限公司
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
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/554,486 priority Critical patent/US20180164487A1/en
Publication of WO2017202074A1 publication Critical patent/WO2017202074A1/zh

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Classifications

    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/184—Information to display
    • G09F2013/1854—Light diffusing layer

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a light guide plate, a mold and a manufacturing method thereof, a backlight module, and a display device.
  • a liquid crystal display requires a backlight module to be disposed behind the liquid crystal display panel.
  • the backlight module generally includes a light source, a light guide plate, an optical film, and the like.
  • a gap is easily formed between the light guide plate and the light source, so that light emitted from the light source cannot be entirely conducted by the light guide plate to illuminate the liquid crystal display panel, which causes loss of light, increases energy consumption, and reduces display quality.
  • Embodiments of the present disclosure provide a light guide plate, a mold and a manufacturing method thereof, a backlight module, and a display device.
  • an embodiment of the present disclosure provides a light guide plate that conducts light emitted from a light source.
  • the light incident surface of the light guide plate is in contact with the light exit surface of the light source.
  • the light guide plate is integrally formed with the light source.
  • the light guide plate further includes a dot distribution surface, and the dot distribution surface intersects the light incident surface.
  • a plurality of dots are arranged on the distribution surface of the dot.
  • the number of dots increases in a direction away from the light incident surface at the dot distribution surface.
  • the size of the dot increases in a direction away from the light incident surface.
  • the material of the light guide plate includes silicone rubber.
  • an embodiment of the present disclosure provides a light guide plate mold for fabricating the light guide plate described above.
  • the light guide plate mold includes a bottom plate and a side plate, wherein the side plate includes a circuit board provided with a light source.
  • the circuit board is integrally formed with the light guide plate.
  • a recess is provided in the bottom plate to form a mesh point of the light guide plate.
  • the number of recesses increases in a direction away from the circuit board.
  • the size of the recess increases in a direction away from the circuit board.
  • the light guide plate mold further includes a cover plate on which the hole is disposed.
  • an embodiment of the present disclosure provides a method of fabricating a light guide plate for fabricating the above-described light guide plate.
  • the method comprises: preparing a light guide plate mold; adding a material for preparing the light guide plate to the mold; curing the material; peeling the mold to obtain a light guide plate.
  • the light guide plate mold comprises a bottom plate and a side plate, and the side plate on the light incident surface side is a circuit board including a light source.
  • stripping the mold to obtain a light guide plate includes: retaining the circuit board to integrally form the circuit board and the light guide plate.
  • a recess is provided in a bottom plate of the light guide plate mold.
  • the method of manufacturing the light guide plate further includes: printing the dots on the light guide plate after peeling off the mold to obtain the light guide plate.
  • the light guide plate manufacturing method further includes placing the material to remove air before adding the material for preparing the light guide plate to the mold.
  • the material is placed for 5 minutes.
  • the light guide plate manufacturing method further includes: performing vacuum defoaming treatment on the material.
  • a material for preparing a light guide plate includes a silicone potting compound.
  • the silicone potting compound comprises a room temperature vulcanized silicone rubber or a high temperature vulcanized silicone rubber.
  • the cured material includes room temperature curing or heat curing.
  • the method of manufacturing the light guide plate further includes: after the mold is peeled off, and the light guide plate is obtained, the light guide plate is trimmed.
  • an embodiment of the present disclosure provides a backlight module including the above-described light guide plate.
  • an embodiment of the present disclosure provides a display device including the backlight module described above.
  • the light incident surface of the light guide plate is adhered to the light exit surface of the light source, and the gap between the light guide plate and the light source is reduced or eliminated. Reduces light loss, reduces energy consumption, and improves display.
  • FIG. 1 is a schematic structural view of a light guide plate according to a first embodiment of the present disclosure
  • FIG. 2 is a first structural schematic view of a light guide plate mold according to a second embodiment of the present disclosure
  • FIG. 3 is a second schematic structural view of a light guide plate mold according to a second embodiment of the present disclosure
  • FIG. 4 is a schematic structural view of a circuit board in a light guide plate mold according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a method of fabricating a light guide plate according to a third embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a backlight module according to a fourth embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a display device according to a fifth embodiment of the present disclosure.
  • FIG. 1 is a schematic structural view of a light guide plate 1 according to a first embodiment of the present disclosure.
  • the light guide plate 1 conducts the light emitted from the light source.
  • the light incident surface of the light guide plate 1 is bonded to the light exit surface of the light source 2.
  • the light incident surface of the light guide plate 1 is adhered to the light exit surface of the light source 2, reducing or eliminating the gap between the light guide plate 1 and the light source 2, reducing light loss, reducing energy consumption, and improving The display effect.
  • the light guide plate 1 may be integrally formed with the light source 2.
  • the light guide plate 1 may further include a dot distribution surface, and the dot distribution surface intersects the light incident surface.
  • a plurality of dots 3 may be disposed on the distribution surface of the dots. At the dot distribution surface, the number of dots 3 can be increased along the direction away from the light incident surface, and the size of the dot 3 can also be increased.
  • the material of the light guide plate 1 may include silicone rubber. It should be understood that this is not a limitation on the material of the light guide plate 1, as long as it is a material that can be molded and has light transmissivity.
  • the light guide plate 1 may be integrally formed with the light source 2 to further eliminate a gap between the light guide plate 1 and the light source 2.
  • Dot 3 is used to guide light. The number and size of the dots 3 can be set, at the near light source 2, the scattering of light to the light source 2 is reduced, and at the far source 2, the scattering of light to the light source 2 is increased to make the light output of the light guide plate 1 uniform. Further, the silicone rubber is easily molded integrally with the light source 2.
  • the light source 2 may be disposed on the circuit board 4 such that the circuit board 4 including the light source 2 may be integrally molded integrally with the light guide plate 1.
  • FIG. 2 is a first structural schematic view of a light guide plate mold according to a second embodiment of the present disclosure.
  • a light guide plate mold for fabricating the above-described light guide plate 1.
  • the light guide plate mold includes a bottom plate and a side plate, wherein the side plate includes a circuit board 4 provided with the light source 2.
  • the side plate of the light guide plate mold includes the circuit board 4 provided with the light source 2, specifically, a portion on the side of the light incident surface, which can cause the light incident surface of the light guide plate 1 to be attached to the light exit surface of the light source 2. Reduce or eliminate the gap between the light guide plate 1 and the light source 2, reducing the light Loss, reduced energy consumption, and improved display.
  • the circuit board 4 provided with the light source 2 and the light guide plate 1 may be integrally formed.
  • the bottom plate may include a recess 3 to form the dots 3 of the light guide plate 1.
  • the number of recesses can be increased, and the size of the recesses can also be increased.
  • the light guide plate 1 may be integrally formed with the light source 2, and the gap between the light guide plate 1 and the light source 2 may be further eliminated.
  • the depressions are used to form the dots 3.
  • the number and size of the recesses are set to form the dots 3 such that at the near light source 2, the scattering of light to the light source 2 is reduced, and at the far light source 2, the scattering of light to the light source 2 is increased, so that the light exiting the light guide plate 1 is uniform.
  • the light guide plate mold may further include a cover plate on which the hole 5 is disposed.
  • the cover plate may flatten the upper surface of the light guide body, and the hole 5 may be used to inject a material forming the light guide plate 1 into the mold.
  • the circuit board 4 is a schematic structural view of a circuit board 4 in a light guide plate mold provided by an embodiment of the present disclosure.
  • the circuit board 4 includes a light source 2, such as a plurality of light emitting diode (LED) lamps.
  • Light source 2 can also be a cold cathode fluorescent tube (CCFL) or other type.
  • CCFL cold cathode fluorescent tube
  • the light guide plate mold includes the circuit board 4 such that the light incident surface of the light guide plate 1 is adhered to the light exit surface of the light source 2, and the gap between the light guide plate 1 and the light source 2 is reduced or eliminated, and the gap is reduced. Light loss, reduced energy consumption, and improved display.
  • the circuit board 4 including the light source 2 is integrally formed with the light guide plate 1, and the gap between the light guide plate 1 and the light source 2 can be further eliminated.
  • FIG. 5 is a flowchart of a method of fabricating the light guide plate 1 according to the third embodiment of the present disclosure.
  • the method for manufacturing the light guide plate 1 includes: step S501: preparing a light guide plate mold; step S502: adding a material for preparing the light guide plate 1 to the mold; step S503: curing the material; and step S504: peeling off the mold, and obtaining Light guide plate 1.
  • the light guide plate mold comprises a bottom plate and a side plate, The side plate on the light entrance side is a circuit board 4 including the light source 2.
  • preparing the light guide plate mold includes: providing a light source 2, such as an LED lamp, on the circuit board 4.
  • the light guide plate mold includes a bottom plate and a side plate, and the circuit board 4 with the LED lamp is used as one of the side plates of the mold for forming the light incident surface of the light guide plate 1.
  • the side panels other than this can be peeled off.
  • the bottom plate may include a recess to form the dots 3 of the light guide plate 1. The closer to the LED light, the smaller the depression and the smaller the number. The farther away from the LED light, the larger the depression, the greater the number.
  • the depressions may be provided in different shapes, which may include various existing light guide plate 1 dot 3 shapes.
  • the bottom plate may not include the recess.
  • the mesh point 3 may be printed on the light guide plate 1 after the light guide plate is formed. Further, after the dot 3 is formed using the recess, the dot 3 can also be added by printing to adjust the light guiding performance.
  • the light guide plate mold may further include a cover plate on which a hole 5 may be disposed.
  • step S502 adding a material for preparing the light guide plate 1 to the mold includes: adding a material including the mixed silicone potting compound and the curing agent to the mold.
  • the silicone potting compound is easy to cure and has good light transmittance, but it should be understood that this is not a limitation on the material for preparing the light guide plate 1.
  • Material can be placed to remove air prior to addition. The time for placing the material can be 5 minutes, which helps to remove the air that is mixed during mixing. In order to enhance the effect of removing air, the material may be subjected to vacuum defoaming treatment.
  • the weight ratio of the silicone potting compound to the curing agent may be 100:10 or more and 100:1 or less.
  • the weight ratio of the silicone potting compound and the curing agent may be 100:5, and the content of the silicone potting glue is increased as much as possible, and the light guiding performance of the light guide plate 1 can be improved.
  • the silicone potting compound can be a one-component silicone potting compound or a two-component silicone potting compound.
  • the silicone potting compound may be a room temperature vulcanized silicone rubber or a high temperature vulcanized silicone rubber.
  • the room temperature vulcanized silicone rubber may be a one-component room temperature vulcanized silicone rubber, a two-component condensation type room temperature vulcanized silicone rubber or a two-component addition type room temperature vulcanized silicone rubber.
  • the manner of curing the material used to prepare the light guide plate 1 may include room temperature curing or heat curing.
  • the manner of curing the material for preparing the light guide plate 1 includes curing at room temperature (usually 25 ° C), or heat curing, which may be selected depending on the material.
  • the curing reaction can begin at the beginning of the mixing process. Material sticking during curing The degree is gradually increased and then converted into a solid elastomer.
  • step S504 the mold is peeled off, and obtaining the light guide plate 1 includes: peeling off the bottom plate constituting the mold and the peelable side plate after the curing is completed.
  • the circuit board 4 provided with the light source 2 is left so that the circuit board 4 can be integrally formed with the light guide plate 1 without peeling off.
  • the method of manufacturing the light guide plate 1 may further include: after the mold is peeled off, and the light guide plate 1 is obtained, the light guide plate 1 is trimmed.
  • the surface of the light guide plate 1 can be selectively trimmed according to the requirements for the flatness of the light guide plate 1.
  • FIG. 6 is a schematic structural diagram of a backlight module according to a fourth embodiment of the present disclosure.
  • the backlight module includes a reflective film 6, a bottom frame 7, and the above-described light guide plate 1.
  • the light guide plate 1 is integrally formed with the circuit board 4 including the light source 2.
  • FIG. 7 is a schematic structural diagram of a display device according to a fifth embodiment of the present disclosure.
  • an embodiment of the present disclosure further provides a display device, including the backlight module, the liquid crystal panel 8 , the support frame 9 for supporting the liquid crystal panel 8 and the backlight module, and the bezel 10 .
  • the display device may be any product or component having a display function, such as an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the light incident surface of the light guide plate 1 is adhered to the light exit surface of the light source 2, and the light guide plate 1 and the light source 2 are reduced or eliminated.
  • the gap between the two reduces the loss of light, reduces energy consumption, and improves the display.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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  • Manufacturing & Machinery (AREA)
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Abstract

导光板（1）及其模具和制作方法、背光模组及显示装置。导光板（1）传导光源（2）的出射光。导光板（1）包括入光面。其中，入光面与光源（2）的出光面贴合。导光板（1）可以与光源（2）成型为一体。导光板模具用于制作上述导光板（1）。导光板模具包括底板以及侧板，其中入光面侧的侧板是包括光源（2）的电路板（4）。导光板（1）入光面与光源（2）的出光面贴合，减小或消除导光板（1）与光源（2）之间的缝隙，降低了光的损失，减少能耗，提高了显示效果。

Description

导光板及其模具和制作方法、背光模组及显示装置
相关申请的交叉引用
本申请要求2016年5月23日递交的中国专利申请第201610345963.4号的优先权，在此全文引用上述中国专利申请所公开的内容以作为本申请的一部分。
技术领域
本公开涉及显示技术领域，尤其涉及导光板及其模具和制作方法、背光模组及显示装置。
背景技术
现有的显示器通常需要设置发光器件。例如，液晶显示器需要在液晶显示面板的后面设置背光模组。背光模组一般包括光源、导光板及光学膜材等。导光板和光源之间容易存在缝隙，使得从光源出射的光不能全部被导光板传导以照射液晶显示面板，这会造成光的损失，增加能耗，并且降低了显示质量。
发明内容
本公开的实施例提供了导光板及其模具和制作方法、背光模组及显示装置。
根据第一个方面，本公开的实施例提供了一种导光板，传导光源的出射光。导光板的入光面与光源的出光面贴合。
在本公开的实施例中，导光板与光源成型为一体。
在本公开的实施例中，导光板还包括网点分布面，网点分布面与入光面相交。在网点分布面上设置有多个网点。
在本公开的实施例中，在网点分布面，沿着远离入光面的方向，网点的数量增加。
在本公开的实施例中，在网点分布面，沿着远离入光面的方向，网点的尺寸增加。
在本公开的实施例中，导光板的材料包括硅橡胶。
根据第二个方面，本公开的实施例提供了一种导光板模具，用于制作上述的导光板。导光板模具包括底板以及侧板，其中，侧板是包括设置有光源的电路板。
在本公开的实施例中，电路板与导光板成型为一体。
在本公开的实施例中，在底板设置有凹陷以形成导光板的网点。
在本公开的实施例中，在底板，沿着远离电路板的方向，凹陷的数量增加。
在本公开的实施例中，在底板，沿着远离电路板的方向，凹陷的尺寸增加。
在本公开的实施例中，导光板模具还包括盖板，在盖板上设置有孔。
根据第三个方面，本公开的实施例提供了一种导光板制作方法，用于制作上述的导光板。包括：制备导光板模具；向模具中加入用于制备导光板的材料；固化材料；剥离模具，得到导光板。其中，导光板模具包括底板以及侧板，入光面侧的侧板是包括光源的电路板。
在本公开的实施例中，剥离模具，得到导光板包括：保留电路板以使电路板与导光板成型为一体。
在本公开的实施例中，在导光板模具的底板设置有凹陷。
在本公开的实施例中，导光板制作方法还包括：在剥离模具，得到导光板后，在导光板印刷网点。
在本公开的实施例中，导光板制作方法还包括：在向模具中加入用于制备导光板的材料前，将材料放置以除去空气。
在本公开的实施例中，材料放置的时间是5分钟。
在本公开的实施例中，导光板制作方法还包括：将材料进行真空脱泡处理。
在本公开的实施例中，用于制备导光板的材料包括有机硅灌封胶。
在本公开的实施例中，有机硅灌封胶包括室温硫化硅橡胶或者高温硫化硅橡胶。
在本公开的实施例中，固化材料包括室温固化或者加热固化。
在本公开的实施例中，导光板制作方法还包括：在剥离模具，得到导光板后，修整导光板。
根据第四个方面，本公开的实施例提供了一种背光模组，包括上述的导光板。
根据第五个方面，本公开的实施例提供了一种显示装置，包括上述的背光模组。
根据本公开的实施例的导光板及其模具和制作方法、背光模组及显示装置，导光板的入光面与光源的出光面贴合，减小或者消除导光板和光源之间的缝隙，降低了光的损失，减少能耗，并且提高了显示效果。
附图说明
为了更清楚地说明本公开的实施例的技术方案，下面将对实施例的附图进行简要说明，应当知道，以下描述的附图仅仅涉及本公开的一些实施例，而非对本公开的限制，其中：
图1是本公开的第一实施例提供的导光板的结构示意图；
图2是本公开的第二实施例提供的导光板模具的第一种结构示意图；
图3是本公开的第二实施例提供的导光板模具的第二种结构示意图；
图4是本公开的实施例提供的导光板模具中的电路板的结构示意图；
图5是本公开的第三实施例提供的导光板的制作方法的流程图；
图6是本公开的第四实施例提供的背光模组的结构示意图；
图7是本公开的第五实施例提供的显示装置的结构示意图。
具体实施方式
为了使本公开的实施例的技术方案和优点更加清楚，下面将结合附图，对本公开的实施例的技术方案进行清楚、完整的描述。显然，所描述的实 施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域技术人员在无需创造性劳动的前提下所获得的所有其他实施例，也都属于本公开保护的范围。
图1是本公开的第一实施例提供的导光板1的结构示意图。如图1所示，导光板1传导光源的出射光。导光板1的入光面与光源2的出光面贴合。根据本公开的实施例，导光板1的入光面与光源2的出光面贴合，减小或者消除导光板1和光源2之间的缝隙，降低了光的损失，减少能耗，并且提高了显示效果。
在本公开的实施例中，导光板1可以与光源2成型为一体。导光板1还可以包括网点分布面，网点分布面与入光面相交。在网点分布面上可以设置有多个网点3。在网点分布面，沿着远离入光面的方向，网点3的数量可以增加，网点3的尺寸也可以增加。导光板1的材料可以包括硅橡胶。应当理解的是，这并不是对于导光板1的材料的限制，只要是能够成型，并且具有透光性的材料均可以。
根据本公开的实施例，导光板1可以与光源2成型为一体，以进一步消除导光板1和光源2之间的缝隙。网点3用于导光。可以设置网点3的数量和尺寸，在近光源2处，减少对于光源2的光的散射，在远光源2处，增加对于光源2的光的散射，以使得导光板1的出光均匀。此外，硅橡胶易于与光源2成型为一体。
根据本公开的实施例，光源2可以设置于电路板4上，从而，包括光源2的电路板4可以整体与导光板1成型为一体。
图2是本公开的第二实施例提供的导光板模具的第一种结构示意图。如图2所示，根据本公开的第二实施例，提供了一种导光板模具，用于制作上述的导光板1。导光板模具包括底板以及侧板，其中，侧板包括设置有光源2的电路板4。
根据本公开的实施例，导光板模具的侧板包括设置有光源2的电路板4，具体是位于入光面侧的部分，这可以使得导光板1的入光面与光源2的出光面贴合，减小或者消除导光板1和光源2之间的缝隙，降低了光的 损失，减少能耗，并且提高了显示效果。
在本公开的实施例中，设置有光源2的电路板4与导光板1可以成型为一体。底板可以包括凹陷以形成导光板1的网点3。在底板，沿着远离入光面侧的侧板(电路板4)的方向，凹陷的数量可以增加，凹陷的尺寸也可以增加。
根据本公开的实施例，导光板1可以与光源2成型为一体，可以进一步消除导光板1和光源2之间的缝隙。凹陷用以形成网点3。设置凹陷的数量和尺寸以形成网点3，使得在近光源2处，减少对于光源2的光的散射，在远光源2处，增加对于光源2的光的散射，使得导光板1的出光均匀。
图3是本公开的第二实施例提供的导光板模具的第二种结构示意图。如图3所示，在本公开的实施例中，导光板模具还可以包括盖板，在盖板上设置有孔5。
根据本公开的实施例，盖板可以使得导光体的上表面平整,孔5可以用于向模具中注入形成导光板1的材料。
图4是本公开的实施例提供的导光板模具中的电路板4的结构示意图。如图4所示，电路板4包括光源2，例如，多个发光二极管(LED)灯。光源2也可以是冷阴极荧光灯管(CCFL)或者其它类型。在导光板1成型后，包括光源2的电路板4可以与导光板1成型为一体。
根据本公开的实施例，导光板模具中包含电路板4，使得导光板1的入光面与光源2的出光面贴合，减小或者消除导光板1和光源2之间的缝隙，降低了光的损失，减少能耗，并且提高了显示效果。
根据本公开的实施例，包括光源2的电路板4与导光板1成型为一体，可以进一步消除导光板1和光源2之间的缝隙。
图5是本公开的第三实施例提供的导光板1的制作方法的流程图。如图5所示，导光板1制作方法包括：步骤S501：制备导光板模具；步骤S502：向模具中加入用于制备导光板1的材料；步骤S503：固化材料；步骤S504：剥离模具，得到导光板1。其中，导光板模具包括底板以及侧板， 入光面侧的侧板是包括光源2的电路板4。
在本公开的实施例中，步骤S501，制备导光板模具包括：在电路板4上设置光源2，例如LED灯。导光板模具包括底板和侧板，将带有LED灯的电路板4作为模具的其中一个侧板，用于形成导光板1的入光面。除此以外的侧板可以剥离。底板可以包括凹陷以形成所述导光板1的网点3。离LED灯越近凹陷越小，数量越少，离LED灯越远凹陷越大，数量越多。凹陷可以设置成不同的形状，该形状可以包括各种现有的导光板1网点3形状。底板也可以不包括凹陷，此时，网点3可以在导光板成型后印刷到导光板1上。此外，在使用凹陷形成网点3之后，也可以使用印刷的方式增加网点3，以调整导光性能。导光板模具还可以包括盖板，在盖板上可以设置有孔5。
在本公开的实施例中，步骤S502，向模具中加入用于制备导光板1的材料包括：将包括混合后的有机硅灌封胶和固化剂的材料加入模具中。有机硅灌封胶易于固化，并且透光性好，但是应当理解，这也不是对于制备导光板1的材料的限制。加入前，可以放置材料以去除空气。放置材料的时间可以是5分钟，这有利于去除混合时所混入的空气。为了增强去除空气的效果，可以将材料进行真空脱泡处理。有机硅灌封胶和固化剂的重量比可以是大于等于100：10，小于等于100：1。这样，能够保证良好的导光效果，也能够保证固化的强度。其中，有机硅灌封胶和固化剂的重量比可以是100：5，尽可能增加有机硅灌封胶的含量，能够提高导光板1导光性能。有机硅灌封胶可以是单组分有机硅灌封胶或者双组分有机硅灌封胶。有机硅灌封胶可以是室温硫化硅橡胶或者高温硫化硅橡胶。室温硫化硅橡胶可以是单组分室温硫化硅橡胶、双组分缩合型室温硫化硅橡胶或者双组分加成型室温硫化硅橡胶。固化用于制备导光板1的材料的方式可以包括室温固化或者加热固化。
在本公开的实施例中，步骤S503，固化用于制备导光板1的材料的方式包括在室温(通常是25℃)下进行固化，或者加热固化，这可以根据材料进行选择。固化反应可以起始于混合过程的开始。固化过程中，材料粘 度逐步增加，然后转变为固体弹性体。
在本公开的实施例中，步骤S504，剥离模具，得到导光板1包括：在固化完成后将构成模具的底板以及可以剥离的侧板剥离掉。保留设置有光源2的电路板4使得电路板4可以与导光板1成型为一体，不需要进行剥离。
在本公开的实施例中，导光板1制作方法还可以包括：在剥离模具，得到导光板1后，修整导光板1。根据对于导光板1的平整度的要求，可以选择对于导光板1的表面进行修整。
图6是本公开的第四实施例提供的背光模组的结构示意图。如图6所示，背光模组包括反射膜6、底框7、以及上述的导光板1，导光板1与包括光源2的电路板4成型为一体。
图7是本公开的第五实施例提供的显示装置的结构示意图。如图7所示，本公开的实施例还提供了一种显示装置，包括上述的背光模组、液晶面板8、用于支撑液晶面板8和背光模组的支撑架9、以及边框10。所述显示装置可以为：电子纸、OLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
根据本公开的实施例的导光板及其模具和制作方法、背光模组及显示装置，导光板1的入光面与光源2的出光面贴合，减小或者消除导光板1和光源2之间的缝隙，降低了光的损失，减少能耗，并且提高了显示效果。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (25)

  1. 一种导光板，传导光源的出射光；所述导光板的入光面与所述光源的出光面贴合。
  2. 根据权利要求1所述的导光板，其中，所述导光板与所述光源成型为一体。
  3. 根据权利要求1所述的导光板，其中，所述导光板还包括网点分布面，所述网点分布面与所述入光面相交；在所述网点分布面上设置有多个网点。
  4. 根据权利要求3所述的导光板，其中，在所述网点分布面，沿着远离所述入光面的方向，所述网点的数量增加。
  5. 根据权利要求3所述的导光板，其中，在所述网点分布面，沿着远离所述入光面的方向，所述网点的尺寸增加。
  6. 根据权利要求1所述的导光板，其中，所述导光板的材料包括硅橡胶。
  7. 一种导光板模具，用于制作根据权利要求1所述的导光板；所述导光板模具包括底板以及侧板，其中，所述侧板包括设置有所述光源的电路板。
  8. 根据权利要求7所述的导光板模具，其中，所述电路板与所述导光板成型为一体。
  9. 根据权利要求7所述的导光板模具，其中，在所述底板设置有凹陷以形成所述导光板的网点。
  10. 根据权利要求9所述的导光板模具，其中，在所述底板，沿着远离所述电路板的方向，所述凹陷的数量增加。
  11. 根据权利要求9所述的导光板模具，其中，在所述底板，沿着远离所述电路板的方向，所述凹陷的尺寸增加。
  12. 根据权利要求7所述的导光板模具，其中，所述导光板模具还包括盖板，在所述盖板上设置有孔。
  13. 一种导光板制作方法，用于制作根据权利要求1所述的导光板； 包括：
    制备导光板模具；
    向模具中加入用于制备导光板的材料；
    固化所述材料；
    剥离所述模具，得到所述导光板；
    其中，所述导光板模具包括底板以及侧板，所述入光面侧的所述侧板是包括所述光源的电路板。
  14. 根据权利要求13所述的导光板制作方法，其中，剥离所述模具，得到所述导光板包括：保留所述电路板以使所述电路板与所述导光板成型为一体。
  15. 根据权利要求13所述的导光板制作方法，其中，在所述导光板模具的所述底板设置有凹陷。
  16. 根据权利要求13所述的导光板制作方法，其中，所述导光板制作方法还包括：在剥离所述模具，得到所述导光板后，在所述导光板印刷网点。
  17. 根据权利要求13所述的导光板制作方法，其中，所述导光板制作方法还包括：在向模具中加入用于制备导光板的材料前，将所述材料放置以除去空气。
  18. 根据权利要求17所述的导光板制作方法，其中，所述材料放置的时间是5分钟。
  19. 根据权利要求17所述的导光板制作方法，其中，所述导光板制作方法还包括：将所述材料进行真空脱泡处理。
  20. 根据权利要求13所述的导光板制作方法，其中，所述用于制备导光板的材料包括有机硅灌封胶。
  21. 根据权利要求20所述的导光板制作方法，其中，所述有机硅灌封胶包括室温硫化硅橡胶或者高温硫化硅橡胶。
  22. 根据权利要求21所述的导光板制作方法，其中，固化所述材料包括室温固化或者加热固化。
  23. 根据权利要求13所述的导光板制作方法，其中，所述导光板制作方法还包括：在剥离所述模具，得到所述导光板后，修整所述导光板。
  24. 一种背光模组，包括根据权利要求1至6中任一项所述的导光板。
  25. 一种显示装置，包括根据权利要求24所述的背光模组。
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