WO2018036207A1 - Plaque guide de lumière et structure électroluminescente - Google Patents

Plaque guide de lumière et structure électroluminescente Download PDF

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Publication number
WO2018036207A1
WO2018036207A1 PCT/CN2017/084131 CN2017084131W WO2018036207A1 WO 2018036207 A1 WO2018036207 A1 WO 2018036207A1 CN 2017084131 W CN2017084131 W CN 2017084131W WO 2018036207 A1 WO2018036207 A1 WO 2018036207A1
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WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
emitting
pattern
Prior art date
Application number
PCT/CN2017/084131
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English (en)
Chinese (zh)
Inventor
王彪
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2018036207A1 publication Critical patent/WO2018036207A1/fr

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    • 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

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a light guide plate and a light emitting structure.
  • LEDs light emitting diodes
  • LEDs Because of its small size, energy saving and long life, light emitting diodes (LEDs) have the most energy-saving and carbon-reducing effects among all new light-emitting components. In recent years, LEDs have been widely used in lighting devices. However, the principle of illumination of LEDs is quite different from the form of illumination and current sources such as light bulbs and tubes. Therefore, the problem of uneven light source is generated when applied to a lighting fixture.
  • a main object of embodiments of the present disclosure is to provide a light guide plate and a light emitting structure, which are intended to improve the uniformity of light emission.
  • a light guide plate includes a light incident surface, a light exit surface, and a reflective surface; the light guide plate has a wedge shape, the light exit surface is disposed opposite to the reflective surface, and the light exit surface is The reflecting surface forms an angle; the light incident surface is adjacent to the light emitting surface and the reflecting surface, and a thickness of one end of the light guiding plate near the light incident surface is greater than an end thereof away from the light incident surface The thickness of the light exiting surface and/or the reflecting surface is provided with a sanding pattern.
  • the frosted surface on the reflective surface is a uniform frosted pattern.
  • the frosted surface on the reflecting surface is gradually densified in a direction close to the light emitting surface.
  • the frosted surface on the light-emitting surface is a uniform frosted pattern.
  • the light guide plate further includes a light emitting structure, the light emitting structure is disposed on the light emitting surface, and the light emitting structure includes a light shielding area and a light exit area.
  • the light exiting area is a hollowed out area
  • the surface of the light emitting surface is formed with a boss that conforms to the shape of the hollowed out area
  • the protruding end is disposed in the hollowed out area
  • the top surface of the protruding part is Fine sanding.
  • the light exiting region is covered with a transparent film, and the transparent film is silk-screened with a pattern or a pattern layer for decoration.
  • the light-incident surface is provided with an anti-reflection first micro-nanostructure layer and/or a water-repellent second micro-nanostructure layer.
  • the light guide plate is made of polymethyl methacrylate or polycarbonate.
  • the present disclosure further provides a light emitting structure comprising a light source and a light guide plate, wherein the light guide plate is a light guide plate according to any one of the above, wherein a light emitting surface of the light source faces a light incident surface of the light guide plate.
  • the light guide plate and the light-emitting structure proposed by the present disclosure adopt a side-into-light source, and the light passes through the inside of the wedge-shaped light guide plate, and is transmitted to the light-emitting surface through a process of refraction, reflection, and the like, thereby forming a surface light source with uniform illumination.
  • the reflective surface is provided with a sanding pattern, when the light is incident from the light incident surface to the reflective surface, the fine particle structure on the frosted grain can diffusely reflect the light, so that the light reflected to the light exiting surface is more uniform.
  • the light emitted to the illuminating surface diffuses the light through the tiny particle structure on the sanding pattern, so that the light is emitted in multiple directions, which can increase the viewing angle of the surface light source and the uniformity of the light.
  • the use of a side-input light source can effectively reduce the thickness of the product compared to a stacked form of the light-diffusing structure.
  • 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 schematic structural view of a light guide plate according to a second embodiment of the present disclosure
  • Figure 3 is a cross-sectional view of the light guide plate A-A of Figure 2;
  • FIG. 4 is a schematic structural view of a light guide plate according to a third embodiment of the present disclosure.
  • Figure 5 is a cross-sectional view taken along line B-B of the light guide plate of Figure 4;
  • Label name Label name 1 Glossy surface 442 Transparent film 2 Glossy surface 5 light source twenty two Boss 6 Upper shell 3 Reflective surface 62 Mouth type limit rib 4 Light structure 7 Lower case 42 Shading area 8 PCB board 44 Light exit area
  • fixed may be a fixed connection, a detachable connection, or an integral; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • fixed may be a fixed connection, a detachable connection, or an integral; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • the present disclosure proposes a light guide plate.
  • the light guide plate includes a light incident surface 1, a light exit surface 2, and a reflective surface 3; the light guide plate has a wedge shape, and the light exit surface 2 and the reflective surface 3 is disposed opposite to each other, and the light-emitting surface 2 forms an angle with the reflective surface 3; the light-incident surface 1 is adjacent to the light-emitting surface 2 and the reflective surface 3, and the light guide plate is adjacent to the light-emitting surface
  • the thickness of one end of the smooth surface 1 is greater than the thickness of one end away from the light incident surface 1; the light exit surface 2 and/or the reflective surface 3 are provided with a sanding pattern.
  • the light guide plate proposed by the present disclosure adopts a side-into-light source 5, and the light passes through the inside of the wedge-shaped light guide plate, and is transmitted to the light-emitting surface 2 through a process of refraction, reflection, and the like, thereby forming a surface light source 5 having uniform illumination.
  • the use of the side-in light source 5 can effectively reduce the thickness of the product compared to the layered form of the light-homogenizing structure.
  • the reflecting surface 3 When the reflecting surface 3 is provided with a sanding pattern, light is incident from the light incident surface 1 to the reflecting surface 3, and the fine particle structure on the sanding pattern can diffusely reflect the light, so that the light reflected to the light emitting surface 2 is more uniform.
  • the light-emitting surface 2 When the light-emitting surface 2 is provided with a sanding pattern, the light emitted to the light-emitting surface 2 is diffusely reflected by the fine particle structure on the frosted pattern, so that the light is emitted in multiple directions, which can increase the viewing angle of the surface light source 5 and the uniformity of the light. Sex.
  • the sanding pattern there are many ways to process the sanding pattern, such as sand blasting, engraving, etching, etc. It can also be processed by mold forming by biting the surface of the mold.
  • the wedge-shaped light guide plate using the frosted surface 2 and/or the reflective surface 3 can reduce the product cost, and also Can reduce the difficulty of product assembly.
  • the sanding pattern on the reflecting surface 3 is a uniform sanding pattern, or the sanding pattern on the reflecting surface 3 is gradually densified in a direction close to the light emitting surface 2.
  • the frosted surface on the reflecting surface 3 can be set to a homogenous or gradual frosted pattern to achieve a better leveling effect.
  • the uniformity of the light emitted from the light emitting surface 2 is better, and the incident surface 1 and the light emitting surface 2 are 90°, for example, on the reflecting surface 3.
  • the sanding pattern on the side close to the light-incident surface 1 is sparse, and the sanding pattern on the side of the reflecting surface 3 away from the light-incident surface 1 is dense.
  • the sanding pattern on the light-emitting surface 2 is a uniform sanding pattern.
  • the sanding pattern on the light-emitting surface 2 is set to a uniform fine sanding pattern, which is more advantageous for enhancing the uniformity effect and increasing the viewing angle.
  • the light guide plate further includes a light-emitting structure 4, and the light-emitting structure 4 is disposed at the light-emitting structure On the face 2, the light-emitting structure 4 includes a light-shielding region 42 and a light-emitting region 44.
  • the region other than the light exiting region 44 is blocked by an opaque material, and the opaque material forms the light-shielding region 42, and the effect of the uniform-surface light source 5 of different shapes can be realized by transforming the shape of the light region 44.
  • the opaque material includes, but is not limited to, ink, plastic, etc.
  • the process of the light exiting region 44 includes, but is not limited to, hollowing out, laser engraving, missing printing, filming, and the like.
  • the light guide plate of the second embodiment is used.
  • the light exiting area 44 is a hollow area
  • the surface of the light exit surface 2 is formed with a boss 22 conforming to the shape of the hollow area.
  • the boss 22 is disposed in the hollow region, and the top surface of the boss 22 is a uniform frosted pattern.
  • the light exiting area 44 of the light guide plate is in the shape of a hollow "ZZZ", and the boss 22 having the shape of "ZZZ” on the light exiting surface 2 protrudes from the light emitting surface 2, and the protruding block 22 can be emitted from the light emitting structure 4.
  • the top surface of the boss 22 is a homogeneous frosted pattern, which can increase the viewing angle and achieve the effect of uniform light.
  • the product using the light guide plate may be a set top box with a uniform light LOGO "ZZZ", the light guide plate and the light source 5 are disposed in the receiving space formed by the upper shell 6 and the lower shell 7, and the light source 5 is a plurality of one sides
  • the illuminating light source 5 can enter the light guide plate from the light incident surface 1 of the light guide plate.
  • the lower case 7 is fastened to the upper case 6 by a snap fastener, and can also be fixed by screws.
  • the upper case 6 is disposed on the side of the light-emitting surface 2, and the lower case 7 is disposed on the side of the reflection surface 3.
  • the upper case 6 can serve as the light-emitting structure 4 of the light guide plate at this time, and the upper case 6 is made of an opaque material, which is made of a black plastic material, the top of which is hollowed out in the shape of "ZZZ", and the lower case 7 is also made of an opaque material, and
  • the upper casing 6 together encloses the light inside the casing, and only the light-emitting region of the upper casing 6 emits light, and the shape of the hollow region is displayed with uniform brightness.
  • the PCB board 8 in the set top box is disposed on the same side of the reflective surface 3 of the light guide plate, and the inner wall of the lower shell 7 has support ribs for supporting the PCB board 8 to prevent the PCB board 8 and the light guide board from retreating, and the inner wall of the upper shell 6 is also disposed.
  • FIG. 4 and FIG. 5 which is a light guide plate of a third embodiment.
  • the light exiting area 44 is covered with a transparent film 442, and the transparent film 442 is silk-screened with a pattern or a pattern layer for decoration. .
  • the light-emitting area 44 of the light guide plate is covered with a matte transparent film 442.
  • the transparent film 442 is provided with a silk screen pattern, and the pattern content can be customized.
  • the back surface of the transparent film 442 is glued and pasted on the light-emitting structure 4.
  • the transparent film 442 can be replaced as needed.
  • the product using the light guide plate may be a wall lamp with a custom decorative pattern, which is composed of an upper case 6 and a lower case 7, the upper case 6 is disposed on the side of the light exit surface 2, and the lower case 7 is disposed at On the side of the reflecting surface 3, the upper shell 6 and the lower shell 7 are made of opaque plastic material, and the upper shell 6 has a hollow area with a large rectangular area.
  • the upper shell 6 serves as a light-emitting structure 4 of the light guide plate, and the hollowed out region is formed.
  • the light exiting area 44 and the light exiting area 44 are covered with a matte transparent film 442.
  • the light source 5 is a plurality of single-sided light-emitting sources 5, and the light can enter the light guide plate from the light-incident surface 1 of the light guide plate.
  • the PCB board 8 is disposed on a side of the light source 5 facing away from the light-incident surface 1, and the upper and lower sides of the PCB board 8
  • the upper shell 6 and the lower shell 7 are respectively disposed on the inner surface, and the upper shell 6 is provided with support ribs and a lip-shaped limiting rib 62.
  • the support ribs and the lip-shaped limiting ribs are located on two sides of the PCB board 8.
  • the PCB board 8 and the light source 5 are prevented from shaking.
  • the light-incident surface 1 is provided with an anti-reflection first micro-nanostructure layer and/or a water-repellent second micro-nanostructure layer.
  • a first micro/nano structure having an anti-reflection function may be formed on the light incident surface 1.
  • a water repellent second micro/nano junction can also be formed on the light incident surface 1.
  • a water-repellent material on the light-incident surface 1, such as polyvinylidene fluoride, polysulfone, a reaction modifier containing a polymerized anhydrate, a silicone rubber, acrylonitrile-butadiene-styrene Polymer, Teflon, to achieve water repellency.
  • a water-repellent material such as polyvinylidene fluoride, polysulfone, a reaction modifier containing a polymerized anhydrate, a silicone rubber, acrylonitrile-butadiene-styrene Polymer, Teflon, to achieve water repellency.
  • the light guide plate is made of polymethyl methacrylate (PMMA) or polycarbonate (PC).
  • the present disclosure further provides a light emitting structure, the light emitting structure comprising a light source 5 and a light guide plate, wherein the light guide plate is a light guide plate according to any one of the above, and the light emitting surface of the light source 5 faces the light guide plate. Face 1.
  • the specific structure of the light guide plate is referred to the above embodiment. Since the present light-emitting structure adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described herein. .
  • the light guide plate and the light-emitting structure can be applied to, but not limited to, a shaped light beam mirror for consumer electronic products, a home decoration type uniform wall lamp and a small outdoor billboard.
  • the present disclosure is applicable to the field of display technology to increase the viewing angle of the surface light source and the uniformity of light, and to effectively reduce the thickness of the product.

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

Abstract

Une plaque guide de lumière et une structure électroluminescente (4). La plaque guide de lumière comprend une surface d'entrée de lumière (1), une surface de sortie de lumière (2) et une surface de réflexion (3). La plaque guide de lumière est en forme de coin. La surface de sortie de lumière (2) est disposée à l'opposé de la surface de réflexion (3), et la surface de sortie de lumière (2) forme un angle inclus avec la surface de réflexion (3). La surface d'entrée de lumière (1) est adjacente à la surface de sortie de lumière (2) et à la surface de réflexion (3). L'épaisseur de l'extrémité de la plaque guide de lumière est proche de la surface d'entrée de lumière (1) est supérieure à l'épaisseur de l'extrémité de la plaque guide de lumière qui est éloignée de la surface d'entrée de lumière (1). La surface de sortie de lumière (1) et/ou la surface de réflexion (3) sont pourvues d'un motif abrasif. La plaque guide de lumière et la structure électroluminescente (4) adoptent une source de lumière latérale (5), de telle sorte que la lumière passe à travers l'intérieur de la plaque guide de lumière en forme de coin, et est transmise à la surface d'émission de lumière (2) au moyen de processus de réfraction et de réflexion, formant ainsi une source de lumière de surface ayant une émission de lumière uniforme.
PCT/CN2017/084131 2016-08-25 2017-05-12 Plaque guide de lumière et structure électroluminescente WO2018036207A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201620943692.8U CN205958788U (zh) 2016-08-25 2016-08-25 导光板及发光结构
CN201620943692.8 2016-08-25

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WO2018036207A1 true WO2018036207A1 (fr) 2018-03-01

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WO (1) WO2018036207A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN205958788U (zh) * 2016-08-25 2017-02-15 中兴通讯股份有限公司 导光板及发光结构
CN108081534A (zh) * 2017-11-15 2018-05-29 东莞万德电子制品有限公司 塑胶材料3d打印工艺及其成品
CN108413344A (zh) * 2018-03-07 2018-08-17 广州市浩洋电子股份有限公司 舞台灯玻璃图案片、舞台灯旋转图案盘及舞台灯光学系统
WO2020191688A1 (fr) * 2019-03-28 2020-10-01 深圳市大疆创新科技有限公司 Module de détection et robot
CN112129775B (zh) * 2020-09-23 2023-03-24 哈尔滨工业大学 一种匀光棒条形光源及基于该光源的光学元件损伤检测装置
CN115144948B (zh) * 2021-03-29 2024-05-07 北京小米移动软件有限公司 导光结构及其终端设备
CN113253381B (zh) * 2021-05-24 2023-08-25 佘晓峰 一种可控发光位置的导光结构
CN114967226A (zh) * 2022-04-14 2022-08-30 深圳创维－Rgb电子有限公司 发光模组和显示器

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Publication number Priority date Publication date Assignee Title
CN2588387Y (zh) * 2002-12-13 2003-11-26 鸿富锦精密工业（深圳）有限公司 导光板和平面发光装置
CN1506701A (zh) * 2002-12-12 2004-06-23 鸿富锦精密工业（深圳）有限公司 导光板及其制造方法
CN1508570A (zh) * 2002-12-14 2004-06-30 鸿富锦精密工业（深圳）有限公司 导光板装置
CN1619377A (zh) * 2003-11-22 2005-05-25 鸿富锦精密工业（深圳）有限公司 导光板及其制造方法
CN2929744Y (zh) * 2006-08-01 2007-08-01 英华达(上海)电子有限公司 楔形导光板及利用其制成的照明设备
CN202132760U (zh) * 2011-07-12 2012-02-01 刘建朝 一种led平板灯
CN205958788U (zh) * 2016-08-25 2017-02-15 中兴通讯股份有限公司 导光板及发光结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1506701A (zh) * 2002-12-12 2004-06-23 鸿富锦精密工业（深圳）有限公司 导光板及其制造方法
CN2588387Y (zh) * 2002-12-13 2003-11-26 鸿富锦精密工业（深圳）有限公司 导光板和平面发光装置
CN1508570A (zh) * 2002-12-14 2004-06-30 鸿富锦精密工业（深圳）有限公司 导光板装置
CN1619377A (zh) * 2003-11-22 2005-05-25 鸿富锦精密工业（深圳）有限公司 导光板及其制造方法
CN2929744Y (zh) * 2006-08-01 2007-08-01 英华达(上海)电子有限公司 楔形导光板及利用其制成的照明设备
CN202132760U (zh) * 2011-07-12 2012-02-01 刘建朝 一种led平板灯
CN205958788U (zh) * 2016-08-25 2017-02-15 中兴通讯股份有限公司 导光板及发光结构

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