WO2018121424A1 - 一种具有齿形入光面的导光板 - Google Patents

一种具有齿形入光面的导光板 Download PDF

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Publication number
WO2018121424A1
WO2018121424A1 PCT/CN2017/117941 CN2017117941W WO2018121424A1 WO 2018121424 A1 WO2018121424 A1 WO 2018121424A1 CN 2017117941 W CN2017117941 W CN 2017117941W WO 2018121424 A1 WO2018121424 A1 WO 2018121424A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
light
light guide
toothed
racks
Prior art date
Application number
PCT/CN2017/117941
Other languages
English (en)
French (fr)
Inventor
张恒
方宗豹
朱志坚
陈林森
Original Assignee
苏州苏大维格光电科技股份有限公司
苏州维旺科技有限公司
苏州大学
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 苏州苏大维格光电科技股份有限公司, 苏州维旺科技有限公司, 苏州大学 filed Critical 苏州苏大维格光电科技股份有限公司
Priority to US16/475,376 priority Critical patent/US10739508B2/en
Priority to EP17886327.0A priority patent/EP3564718A4/en
Publication of WO2018121424A1 publication Critical patent/WO2018121424A1/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
    • G02B6/0033—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
    • G02B6/0033—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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—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 by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging 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
    • G02B6/0013—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
    • G02B6/0028—Light guide, e.g. taper
    • 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
    • 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

Definitions

  • the present invention relates to a light guide plate, and in particular to a light guide plate having a toothed light entrance surface.
  • Light guides utilize optical grade acrylic or PC sheets and then use high-tech materials with very high reflectivity and no light absorption to print light-guiding microstructure points on the underside of optical grade acrylic sheets.
  • a single-sided microstructure array light guide plate is commonly used on the market, and its single surface is arranged as a dot structure.
  • the main problem is that the masking normal performance for bright spots, stripes, black and white spots, etc. is poor, and there is also a low light energy density. , affecting the problem of light.
  • Chinese Patent Application No. 201510312037.2 discloses a novel light guide plate having at least one V-shaped groove having a V-shaped cross section, the V-shaped groove having a first side and a second side The first side surface and the second side surface form an angle, the angle is an obtuse angle, and the light is reflected by the V-shaped groove and is perpendicular to the upper end surface of the light guide plate.
  • the technology will be irregularly diverged. After being reflected by the V-shaped groove, the light is emitted in a direction perpendicular to the end surface of the light guide plate, thereby effectively improving the utilization of the light source, improving the intensity of the light reflected from the light guide plate, and homogenizing the brightness of the light. It is good to map light source energy on products that use light guides.
  • the object of the present invention is to provide a light guide plate having a toothed light incident surface, which aims to solve the problem that the light energy density of the light incident end is low and the spot light is affected in the prior art.
  • the technical problem of the width of the blank area is too wide.
  • a light guide plate having a toothed light incident surface comprising a light guide plate body, wherein opposite sides of the light guide plate body respectively form a first plate surface and a second plate surface, and the first plate surface is provided with random and dense
  • the distributed microstructure point the light-incident side of the light guide plate body is provided with a plurality of first racks arranged in parallel, the first rack extends along the height direction of the light guide plate body, and each adjacent two first racks
  • a first slot is formed between the plurality of first racks and the first slot to form an incident end face.
  • the first rack and the first slot have a triangular cross section.
  • the second plate surface is provided with a plurality of second racks arranged in parallel in parallel, the second rack is parallel to the side surface, and a second slot is formed between each adjacent two second racks.
  • the plurality of second racks and the second slots form a light surface.
  • the second rack and the second slot have a triangular cross section.
  • the point on the first plate surface is a groove.
  • the second plate surface is provided with a ridge
  • the cross section of the ridge is a right-angled trapezoid
  • the inclined surface of the ridge is connected to the light surface
  • the vertical surface of the ridge is connected to the side
  • the first rack and the first The slots extend along the vertical plane and are connected to the top surface of the ribs.
  • the above-mentioned light guide plate having a toothed light incident surface is provided with a first rack and a first tooth groove on at least one side surface of the light guide plate body, and the first rack and the first tooth gap are used as light incident
  • the surface problem effectively solves the above-mentioned technical problem of low light energy density at the light entrance end. Therefore, the present invention has the following advantages over the prior art: the contact area of the light incident surface is increased, thereby increasing the light energy entering the light guide plate body from the light incident surface, and the LED and the light guide plate body can also be improved.
  • the contact angle of the smooth surface reduces the spot phenomenon at the light end and reduces the width of the white space.
  • FIG. 1A is a perspective view of a light guide plate having a toothed surface in the first embodiment of the present invention.
  • IB is a plan view of a first embodiment of a light guide plate having a toothed surface in accordance with the present invention.
  • FIG. 2A is a perspective view of a light guide plate having a toothed surface in a second embodiment of the present invention.
  • FIG. 2B is a plan view of a light guide plate having a toothed surface in a second embodiment of the present invention.
  • FIG. 2C is a side view of a second embodiment of a light guide plate having a toothed surface in accordance with the present invention. [0018] FIG.
  • FIG. 3A is a perspective view of a light guide plate having a toothed surface in a third embodiment of the present invention. [0019] FIG.
  • FIG. 3B is a plan view of a light guide plate having a toothed surface in a third embodiment of the present invention.
  • 3C is a side view of a light guide plate having a toothed surface in a third embodiment of the present invention.
  • FIG. 4A is a perspective view of a fourth embodiment of a light guide plate having a toothed surface in accordance with the present invention. [0022] FIG.
  • FIG. 4B is a plan view of a light guide plate having a toothed surface in the fourth embodiment of the present invention.
  • 4C is a side view of a fourth embodiment of a light guide plate having a toothed surface in accordance with the present invention.
  • a light guide plate having a toothed light incident surface is mainly provided with a light guide plate body 1, and opposite sides of the light guide plate body 1 respectively form a first
  • the board surface 11 and the second board surface 1 2 are provided with random and densely distributed microstructure points 111 on the first board surface 11, and a plurality of side surfaces 13 of the light guide plate body 1 are provided with a plurality of sequentially a first rack 131 that is arranged in parallel, the first rack 131 extends along the height direction of the light guide plate body 1, and a first first slot 132 is formed between each adjacent two first racks 131, and the plurality of first racks
  • the 131 and the first gullet 132 constitute a light incident surface.
  • the light guide plate having the toothed light incident surface increases the contact area of the light incident surface, thereby increasing the light energy entering the light guide plate body from the light incident surface, and the LED can also be improved.
  • the contact angle of the light incident surface of the light guide plate body reduces the spot phenomenon at the light entrance end and reduces the width of the white space.
  • the cross-section of the first rack 131 and the first slot 132 may be specifically set to be triangular to further increase the light energy; the point 111 on the first board surface 11 may be a groove.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1
  • the other is the same as the first embodiment, except that the second plate surface 12 is provided with a plurality of second racks 121 arranged in parallel, and the second rack 121 is parallel.
  • a second tooth groove 122 is formed between each adjacent two second racks 121, and a plurality of second racks 121 and second slots 122 are formed.
  • Glossy In the light guide plate having the toothed light incident surface according to the present embodiment, in addition to the above effects, the light energy can be further increased by the double-sided structure.
  • the cross-sections of the second rack 121 and the second slot 122 may be specifically arranged in a triangle shape to further increase the light energy.
  • the other embodiment is the same as the first embodiment, except that the second plate surface 12 is provided with a rib 123, and the cross section of the ridge 123 is a right-angled trapezoid, and the ridge 123
  • the inclined surface 124 is connected to the light surface
  • the vertical surface 125 of the convex strip 123 is connected to the side surface 13
  • the first rack 131 and the first tooth gap 132 extend along the vertical surface 125 and are connected to the top surface 126 of the ridge 123.
  • the light guide plate having the toothed light entrance surface according to the embodiment
  • the light energy of the end face entering the light guide plate can be increased, and the brightness of the overall light guide plate is increased by 5 _ 7% .
  • the other embodiment is the same as the second embodiment, except that the second plate surface 12 is provided with a ridge 123, and the cross section of the ridge 123 is a right-angled trapezoid, and the ridge 123
  • the inclined surface 124 is connected to the light emitting surface, that is, the light emitting surface formed by the plurality of second racks 121 and the second slots 122, the vertical surface 12 5 of the strip 123 is connected to the side surface 13, and the first rack 131 and the first tooth
  • the slot 132 extends along the vertical plane 125 and is coupled to the top surface 126 of the rib 123.
  • the light energy of the end surface entering the light guide plate can be increased by the arrangement of the ridges, and the brightness of the entire light guide plate can be increased by 5-7%.
  • the light guide plate having a toothed light incident surface is provided with a first rack and a first tooth groove on at least one side of the light guide plate body, and the first rack and the first rack A cogging is used as the light incident surface to effectively solve the above technical problems. Therefore, the present invention has the following advantages over the prior art: the contact area of the light incident surface is increased, thereby increasing the light energy entering the light guide plate body from the light incident surface, and the LED and the light guide plate body can also be improved.
  • the contact angle of the smooth surface reduces the spot phenomenon at the light end and reduces the width of the white space.
  • a light guide plate having a toothed light incident surface according to the present invention is provided with a first rack and a first tooth groove on at least one side of the light guide plate body, and the first rack and the first tooth gap are used as light incident
  • the surface increases the contact area of the light incident surface, thereby increasing the light energy entering the light guide plate from the light incident surface, and simultaneously improving the contact angle between the LED and the light incident surface of the light guide plate body, and reducing the spot phenomenon at the light entrance end. , and reduce the width of the blank area.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种具有齿形入光面的导光板，包括导光板体（1），导光板体（1）的相对两面分别形成第一板面（11）和第二板面（12），第一板面（11）上设置有随机且疏密分布的微结构点（111），导光板体（1）的多个侧面中，至少一侧面上设置有多个依次平行排列的第一齿条（131），第一齿条（131）沿着导光板体（1）的高度方向延伸，每相邻的两第一齿条（131）之间构成第一齿槽（132），多个第一齿条（131）和第一齿槽（132）构成入光面。

Description

说明书 发明名称：一种具有齿形入光面的导光板 技术领域
[0001] 本发明涉及一种导光板， 具体涉及一种具有齿形入光面的导光板。
背景技术
[0002] 导光板是利用光学级的亚克力或 PC板材， 然后用具有极高反射率且不吸光的高 科技材料， 在光学级的亚克力板材底面印上导光微结构点。 目前， 市场上比较 常见的是单面微结构阵列导光板， 其单面设置为网点结构， 主要问题在对于亮 点、 条纹、 黑白斑等的遮蔽常态性能较差， 且还存在着光能量密度低， 影响光 亮的问题。
[0003] 为了解决上述所存在的问题， 目前出现了一些技术， 例如在申请号分别为 2013 10243997.9、 201510312037.2、 201610442266.0的中国专利申请中， 都是通过将 导光板的一表面设置为锯齿形的表面， 以解决上述的技术问题。 例如， 申请号 为 201510312037.2的中国专利申请， 其公幵了一种新型导光板， 导光板上设置有 至少一个截面呈 V型的 V型槽， 所述 V型槽具有第一侧面和第二侧面， 所述第一 侧面和第二侧面形成一夹角， 所述夹角为钝角， 光线经所述 V型槽反射后垂直于 所述导光板的上端面射出， 该技术将原来不规则发散的光通过 V型槽反射后使其 全部以垂直于导光板上端面的方向射出， 有效地提高了光源的利用率， 提升了 从导光板反射出的光的强度， 使光的亮度均一化， 进而很好地在使用导光板的 产品上映射光源能量。
技术问题
[0004] 现有技术虽然解决了出光处的光能量等问题， 但是在其入光端， 普遍还存在着 光能量密度低的问题， 并且存在着入光端的光斑 （hot spot) 影响以及留白区宽 度过宽的问题。
问题的解决方案
技术解决方案 [0005] 本发明的目的在于针对现有技术的不足之处， 提供了一种具有齿形入光面的导 光板， 旨在解决现有技术中入光端光能量密度低、 存在光斑影响以及留白区宽 度过宽的技术问题。
[0006] 为了达到上述目的， 本发明的技术方案如下：
[0007] 一种具有齿形入光面的导光板， 其包括导光板体， 导光板体的相对两面分别形 成第一板面和第二板面， 第一板面上设置有随机且疏密分布的微结构点， 导光 板体的入光侧面上设置有多个依次平行排列的第一齿条， 第一齿条沿着导光板 体的高度方向延伸， 每相邻的两第一齿条之间构成第一齿槽， 多个第一齿条和 第一齿槽构成入光端面。
[0008] 进一步地， 上述第一齿条和第一齿槽的横截面皆呈三角形。
[0009] 进一步地， 上述第二板面上设置有多个依次平行排列的第二齿条， 第二齿条平 行于侧面， 每相邻的两第二齿条之间构成第二齿槽， 多个第二齿条和第二齿槽 构成出光面。
[0010] 进一步地， 上述第二齿条和第二齿槽的横截面皆呈三角形。
[0011] 进一步地， 上述第一板面上的点为凹槽。
[0012] 进一步地， 上述第二板面上设置有凸条， 凸条的横截面呈直角梯形， 凸条的斜 面连接出光面， 凸条的垂直面连接侧面， 且第一齿条和第一齿槽沿着垂直面延 伸并与凸条的顶面连接。 发明的有益效果
有益效果
[0013] 上述的具有齿形入光面的导光板， 通过在导光板体的至少一侧面上设置第一齿 条和第一齿槽， 且将第一齿条和第一齿槽作为入光面， 有效地解决了上述的入 光端光能量密度低的技术问题。 因此， 本发明相较于现有技术具有以下优点： 增加了入光面的接触面积， 进而增加了从入光面进入导光板体的光能量， 同吋 还可以改善 LED与导光板体的入光面的接触角， 减少入光端的光斑现象， 并且减 少留白区的宽度。
对附图的简要说明
附图说明 [0014] 图 1A为本发明的-一种具有齿形 ^ 光面的导光板在实施例一的立体图。
[0015] 图 IB为本发明的- 种具有齿形 光面的导光板在实施例一的俯视图。
[0016] 图 2A为本发明的-一种具有齿形 ^ 光面的导光板在实施例二的立体图。
[0017] 图 2B为本发明的- 种具有齿形 光面的导光板在实施例二的俯视图。
[0018] 图 2C为本发明的- 种具有齿形 光面的导光板在实施例二的侧视图。
[0019] 图 3A为本发明的-一种具有齿形 ^ 光面的导光板在实施例三的立体图。
[0020] 图 3B为本发明的- 种具有齿形 光面的导光板在实施例三的俯视图。
[0021] 图 3C为本发明的- 种具有齿形 光面的导光板在实施例三的侧视图。
[0022] 图 4A为本发明的-一种具有齿形 ^ 光面的导光板在实施例四的立体图。
[0023] 图 4B为本发明的- 种具有齿形 光面的导光板在实施例四的俯视图。
[0024] 图 4C为本发明的- 种具有齿形 光面的导光板在实施例四的侧视图。
本发明的实施方式
[0025] 为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效， 以下结 合附图及较佳实施例， 对本发明的具体实施方式、 结构、 特征及其功效， 详细 说明如后。
[0026] 实施例一：
[0027] 如图 1A至图 1B所示， 本发明实施例一所涉及的一种具有齿形入光面的导光板 主要设置了导光板体 1， 导光板体 1的相对两面分别形成第一板面 11和第二板面 1 2， 第一板面 11上设置有随机且疏密分布的微结构点 111， 导光板体 1的多个侧面 13中， 一侧面 13上设置有多个依次平行排列的第一齿条 131， 第一齿条 131沿着 导光板体 1的高度方向延伸， 每相邻的两第一齿条 131之间构成第一齿槽 132， 多 个第一齿条 131和第一齿槽 132构成入光面。
[0028] 本实施例所涉及的具有齿形入光面的导光板， 增加了入光面的接触面积， 进而 增加了从入光面进入导光板体的光能量， 同吋还可以改善 LED与导光板体的入光 面的接触角， 减少入光端的光斑现象， 并且减少留白区的宽度。
[0029] 为了验证上述技术效果， 下面给出具体的实验数据， 实验条件按照现有的针对 导光板的标准即可， 在此不再赘述。 [0030] [表 1]
Figure imgf000006_0001
[0031] 其中， 上述第一齿条 131和第一齿槽 132的横截面具体可以设置呈三角形， 以进 一步地增加光能量； 上述第一板面 11上的点 111具体可以为凹槽。
[0032] 实施例二：
[0033] 如图 2A至图 2C所示， 其他与实施例一相同， 不同之处在于， 第二板面 12上设 置有多个依次平行排列的第二齿条 121， 第二齿条 121平行于侧面 13， 每相邻的 两第二齿条 121之间构成第二齿槽 122， 多个第二齿条 121和第二齿槽 122构成出 光面。 本实施例所涉及的具有齿形入光面的导光板， 在上述效果基础上， 通过 双面的结构， 可以进一步地提高光能量。 其中， 第二齿条 121和第二齿槽 122的 横截面具体可以设置呈三角形， 可以进一步地提高光能量。
[0034] 实施例三：
[0035] 如图 3A至图 3C所示， 其他与实施例一相同， 不同之处在于， 第二板面 12上设 置有凸条 123， 凸条 123的横截面呈直角梯形， 凸条 123的斜面 124连接出光面， 凸条 123的垂直面 125连接侧面 13， 且第一齿条 131和第一齿槽 132沿着垂直面 125 延伸并与凸条 123的顶面 126连接。 本实施例所涉及的具有齿形入光面的导光板
， 在上述效果基础上， 通过凸条的设置， 可以增加端面进入导光板的光能量， 提高整体导光板的亮度 5_7%。
[0036] 实施例四：
[0037] 如图 4A至图 4C所示， 其他与实施例二相同， 不同之处在于， 第二板面 12上设 置有凸条 123， 凸条 123的横截面呈直角梯形， 凸条 123的斜面 124连接出光面， 该出光面即多个第二齿条 121和第二齿槽 122构成的出光面， 凸条 123的垂直面 12 5连接侧面 13， 且第一齿条 131和第一齿槽 132沿着垂直面 125延伸并与凸条 123的 顶面 126连接。 本实施例所涉及的具有齿形入光面的导光板， 在上述效果基础上 ， 通过凸条的设置， 可以增加端面进入导光板的光能量， 提高整体导光板的亮 度 5-7%。
[0038] 综上， 本发明所涉及的具有齿形入光面的导光板， 通过在导光板体的至少一侧 面上设置第一齿条和第一齿槽， 且将第一齿条和第一齿槽作为入光面， 有效地 解决了上述的技术问题。 因此， 本发明相较于现有技术具有以下优点： 增加了 入光面的接触面积， 进而增加了从入光面进入导光板体的光能量， 同吋还可以 改善 LED与导光板体的入光面的接触角， 减少入光端的光斑现象， 并且减少留白 区的宽度。
[0039] 以上所述的仅是本发明的优选实施方式， 应当指出， 对于本领域的普通技术人 员来说， 在不脱离本发明创造构思的前提下， 还可以做出若干变形和改进， 这 些都属于本发明的保护范围。
工业实用性 本发明所涉及的具有齿形入光面的导光板， 通过在导光板体的至少一侧面上设 置第一齿条和第一齿槽， 且将第一齿条和第一齿槽作为入光面， 增加了入光面 的接触面积， 进而增加了从入光面进入导光板体的光能量， 同吋还可以改善 LED 与导光板体的入光面的接触角， 减少入光端的光斑现象， 并且减少留白区的宽 度。

Claims

权利要求书
一种具有齿形入光面的导光板， 其特征在于， 包括导光板体， 所述导 光板体的相对两面分别形成第一板面和第二板面， 所述第一板面上设 置有多个阵列分布的微结构点， 所述导光板体的入光侧面上设置有多 个依次平行排列的第一齿条， 所述第一齿条沿着所述导光板体的高度 方向延伸， 每相邻的两所述第一齿条之间构成第一齿槽， 多个所述第 一齿条和所述第一齿槽构成入光面。
根据权利要求 1所述的一种具有齿形入光面的导光板， 其特征在于， 所述第一齿条和所述第一齿槽的横截面皆呈三角形。
根据权利要求 1所述的一种具有齿形入光面的导光板， 其特征在于， 所述第二板面上设置有多个依次平行排列的第二齿条， 所述第二齿条 平行于所述侧面， 每相邻的两所述第二齿条之间构成第二齿槽， 多个 所述第二齿条和所述第二齿槽构成出光面。
根据权利要求 3所述的一种具有齿形入光面的导光板， 其特征在于， 所述第二齿条和所述第二齿槽的横截面皆呈三角形。
根据权利要求 3所述的一种具有齿形入光面的导光板， 其特征在于， 所述第二板面上设置有凸条， 所述凸条的横截面呈直角梯形， 所述凸 条的斜面连接所述出光面， 所述凸条的垂直面连接所述侧面， 且所述 第一齿条和所述第一齿槽沿着所述垂直面延伸并与所述凸条的顶面连
[权利要求 6] 根据权利要求 1所述的一种具有齿形入光面的导光板， 其特征在于， 所述第一板面上的所述点为凹槽。
[权利要求 7] 根据权利要求 1所述的一种具有齿形入光面的导光板， 其特征在于， 所述第二板面上设置有凸条， 所述凸条的横截面呈直角梯形， 所述凸 条的斜面连接所述出光面， 所述凸条的垂直面连接所述侧面， 且所述 第一齿条和所述第一齿槽沿着所述垂直面延伸并与所述凸条的顶面连
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107065060A (zh) * 2016-12-30 2017-08-18 苏州维旺科技有限公司 一种具有齿形入光面的导光板
CN109613642B (zh) * 2018-11-30 2020-07-07 合肥泰沃达智能装备有限公司 一种半反半透导光板
CN111352273A (zh) * 2020-03-16 2020-06-30 深圳市南极光电子科技股份有限公司 一种挖孔屏背光源
CN112882148A (zh) * 2021-03-17 2021-06-01 江苏集萃智能液晶科技有限公司 一种背光源结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101126859A (zh) * 2006-08-17 2008-02-20 胜华科技股份有限公司 背光模块及用于该背光模块的导光板
CN102156320A (zh) * 2011-02-25 2011-08-17 深圳市华星光电技术有限公司 侧入式导光板组件及背光模块
CN202057825U (zh) * 2011-05-24 2011-11-30 深圳市德仓科技有限公司 一种导光板及背光模组
CN203799044U (zh) * 2014-04-17 2014-08-27 锦湖光电(深圳)有限公司 导光板的改良结构
CN107065060A (zh) * 2016-12-30 2017-08-18 苏州维旺科技有限公司 一种具有齿形入光面的导光板

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100445837C (zh) * 2003-10-23 2008-12-24 鸿富锦精密工业（深圳）有限公司 面发光装置及其导光板
TWI275846B (en) * 2005-10-28 2007-03-11 Hon Hai Prec Ind Co Ltd Light guide plate
CN100426087C (zh) * 2006-01-06 2008-10-15 清华大学 导光板及使用该导光板的背光模块
JP2011014520A (ja) * 2008-12-04 2011-01-20 Seiko Instruments Inc 照明装置及び表示装置
CN101694277B (zh) * 2009-10-21 2012-06-20 瑞仪光电(苏州)有限公司 背光模组及其分光元件
US8262273B2 (en) * 2010-10-01 2012-09-11 National Kaohsiung First University Of Science And Technology Integrated light guide plate having enhanced axial luminosity
JP5725349B2 (ja) * 2011-07-25 2015-05-27 ミネベア株式会社 面状照明装置
US9442240B2 (en) 2012-03-16 2016-09-13 Radiant Opto-Electronics Corporation Light guide plate and light source module
CN103807664A (zh) * 2012-11-07 2014-05-21 纬创资通股份有限公司 光源模块和制作光源模块的方法
TW201430459A (zh) * 2013-01-28 2014-08-01 Hon Hai Prec Ind Co Ltd 背光模組及其導光板
CN203799043U (zh) * 2014-04-16 2014-08-27 锦湖光电(深圳)有限公司 改良的导光板
US20170176663A1 (en) * 2014-06-06 2017-06-22 Keiwa Inc. Edge-lit backlight unit and reflective tape member
CN104090327A (zh) * 2014-07-28 2014-10-08 苏州茂立光电科技有限公司 入光侧具锥体结构的导光板
CN104914499A (zh) 2015-06-09 2015-09-16 海门市润圣纺织品有限公司 一种新型导光板
CN105467505A (zh) * 2016-01-05 2016-04-06 武汉华星光电技术有限公司 一种导光板及背光模组
CN106016188A (zh) 2016-06-20 2016-10-12 保定威控光电科技有限公司 一种led光源
CN206431312U (zh) * 2016-12-30 2017-08-22 苏州维旺科技有限公司 一种具有齿形入光面的导光板

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101126859A (zh) * 2006-08-17 2008-02-20 胜华科技股份有限公司 背光模块及用于该背光模块的导光板
CN102156320A (zh) * 2011-02-25 2011-08-17 深圳市华星光电技术有限公司 侧入式导光板组件及背光模块
CN202057825U (zh) * 2011-05-24 2011-11-30 深圳市德仓科技有限公司 一种导光板及背光模组
CN203799044U (zh) * 2014-04-17 2014-08-27 锦湖光电(深圳)有限公司 导光板的改良结构
CN107065060A (zh) * 2016-12-30 2017-08-18 苏州维旺科技有限公司 一种具有齿形入光面的导光板

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3564718A4

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