TW202028792A - Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same - Google Patents
Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
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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
- 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
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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
- 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
- G02B6/0031—Reflecting element, sheet or layer
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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
- 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
- G02B6/0045—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 by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
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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
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
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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
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
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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
- 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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
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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
- 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
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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
- 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
- G02B6/0073—Light emitting diode [LED]
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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
- 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
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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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
- 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
- G02B6/009—Positioning aspects of the light source in the package
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Abstract
Description
本申請案依專利法主張於2019年4月3日提出申請的美國申請案第16/374,381號之優先權權益,其主張於2018年11月29日提出申請的韓國專利申請案第10-2018-0150797號之優先權權益,其主張於2018年10月1日提出申請的韓國專利申請案第10-2018-0116835號之優先權權益,本申請案之參考整體上結合以上韓國專利申請案各者之揭露。This application claims the priority rights of U.S. Application No. 16/374,381 filed on April 3, 2019 in accordance with the Patent Law, and claims the Korean Patent Application No. 10-2018 filed on November 29, 2018 The priority rights of -0150797, which claim the priority rights of Korean patent application No. 10-2018-0116835 filed on October 1, 2018, the reference of this application as a whole combines each of the above Korean patent applications The disclosure of the person.
本揭示案係關於一種製造導光板(LGP)的方法、由此方法所製造的LGP及具有此LGP的照明裝置,且更具體地,係關於一種製造LGP的方法、由此所製造的LGP及具有此LGP的照明裝置,在此照明裝置中可以防止前方觀察者看到擷取的光所通過的發光點,可以簡化製程,並且可以獲得類似於朗伯分佈(Lambertian distribution)的光分佈。The present disclosure relates to a method of manufacturing a light guide plate (LGP), an LGP manufactured by this method, and a lighting device having the LGP, and more specifically, to a method of manufacturing an LGP, the LGP manufactured thereby, and The lighting device with this LGP can prevent the front observer from seeing the light-emitting point through which the captured light passes, simplify the manufacturing process, and obtain a light distribution similar to the Lambertian distribution.
一般來說,導光板(LGP)使用高透明基板(例如丙烯酸或聚碳酸酯)來實現。LGP使用當光從具有較高光學折射率的介質傳播到具有較低光學折射率的介質時發生的全內反射以在其中分配光。當在LGP內傳播的光到達(strike)光擷取(extraction)點(或位置)時,該光會被折射並離開LGP。在這方面,LGP必須具有複數個光擷取點,在該等光擷取點處,光被向外擷取(extract)。通常藉由以下方法來製造這些光擷取點:在LGP中機械加工V形凹槽的方法、使用噴墨製造透鏡的方法、及如圖10所示藉由網版印刷將圖案化的點5印刷在LGP 3的表面上的方法。然而,在將圖案化的點5印刷在LGP 3的表面上的情況下,由於點5之間的顯著(significant)距離,因此必須額外設置擴散器薄片(diffuser sheet)。Generally speaking, a light guide plate (LGP) is implemented using a highly transparent substrate (such as acrylic or polycarbonate). The LGP uses total internal reflection that occurs when light travels from a medium with a higher optical refractive index to a medium with a lower optical refractive index to distribute the light therein. When the light propagating in the LGP reaches (strike) the light extraction point (or position), the light will be refracted and leave the LGP. In this regard, the LGP must have a plurality of light extraction points, at which light is extracted outward. These light extraction points are usually manufactured by the following methods: the method of machining V-shaped grooves in the LGP, the method of manufacturing the lens using inkjet, and the patterned dots by screen printing as shown in Figure 10 The method of printing on the surface of
如圖11所示,響應於噴墨技術的發展,最近已經能夠印刷較小的點5。當微小的點5被隨機地佈置以起到類似擴散器薄片的功能時,可以省略擴散器薄片。然而,當將此結構用於實際的照明裝置中時,即使減小了尺寸,也可以目視識別出(visually recognized)由噴墨印刷製造的點5。具體言之,由於製程變化可能會產生污點或類似物。對於實際產品中使用而言,此結構可能有些不完整。As shown in FIG. 11, in response to the development of inkjet technology, it has recently been possible to print
另外,因為待印刷的點5的數量隨著點5的尺寸的減小而增加,所以其大量生產可能需要延長的時間量,這也是有問題的。
相關技術文獻In addition, because the number of
專利文獻1:韓國專利第10-0656896號(2006年12月6日)Patent Document 1: Korean Patent No. 10-0656896 (December 6, 2006)
本揭示案的各式態樣提供一種製造導光板(LGP)的方法、由此方法所製造的LGP以及具有此LGP的照明裝置,在此照明裝置中可以防止前方觀察者看到擷取的光所通過的發光點,可以簡化製程,並且可以獲得類似於朗伯分佈的光分佈。Various aspects of the present disclosure provide a method of manufacturing a light guide plate (LGP), an LGP manufactured by this method, and a lighting device having the LGP, in which the front observer can be prevented from seeing the captured light The passing light-emitting points can simplify the manufacturing process and obtain a light distribution similar to the Lambertian distribution.
根據一個態樣,一種製造用於邊緣發光照明裝置中的導光板的製造方法,該方法包括以下步驟:準備一導光板,該導光板包含一第一表面、一第二表面與一第三表面,該第一表面面向一前方觀察者且通過該第一表面照射光,該第二表面與該第一表面相對,該第三表面連接到該第一表面的一周圍部分和該第二表面的一周圍部分以連接該第一表面和該第二表面,該第三表面面向一發光二極體;及藉由在該第二表面的整個區域上印刷包含光散射粒子的印刷溶液(printing solution)來製造光散射層。可藉由以下控制印刷步驟方法中的至少一個方法來製造光散射層:控制印刷步驟的第一方法,使得隨著與面向第三表面的至少一個表面的發光二極體相距之距離增加,光散射粒子的密度而逐漸增加,及控制印刷步驟的第二方法,使得隨著與面向第三表面的至少一個表面的發光二極體相距之距離增加,光散射層的厚度而逐漸增加。According to one aspect, a method for manufacturing a light guide plate used in an edge-emitting lighting device, the method includes the following steps: preparing a light guide plate, the light guide plate including a first surface, a second surface, and a third surface , The first surface faces a front observer and irradiates light through the first surface, the second surface is opposite to the first surface, and the third surface is connected to a surrounding portion of the first surface and the second surface A peripheral portion to connect the first surface and the second surface, the third surface facing a light emitting diode; and by printing a printing solution containing light scattering particles on the entire area of the second surface To make the light scattering layer. The light scattering layer can be manufactured by at least one of the following methods of controlling the printing step: the first method of controlling the printing step is such that as the distance from the light-emitting diode on at least one surface facing the third surface increases, the light The density of the scattering particles is gradually increased, and the second method of controlling the printing step makes the thickness of the light scattering layer gradually increase as the distance from the light-emitting diode on at least one surface facing the third surface increases.
在此,該方法可以進一步包括以下步驟:在製造光散射層之前製造印刷溶液。Here, the method may further include the following step: manufacturing a printing solution before manufacturing the light scattering layer.
可藉由將光散射粒子添加到印刷溶液中來製造印刷溶液,使得光散射粒子的量對印刷溶液的量之範圍按重量計(by weight)為0.1%至5%。The printing solution can be manufactured by adding light scattering particles to the printing solution so that the amount of light scattering particles to the amount of printing solution ranges from 0.1% to 5% by weight.
可藉由將光散射粒子添加到印刷溶液中來製造印刷溶液,該等光散射粒子包括自以下各者中所選之至少一者:TiO2 、ZrO2 、BaTiO3 和SnO2 。The printing solution can be manufactured by adding light scattering particles to the printing solution, the light scattering particles including at least one selected from the following: TiO 2 , ZrO 2 , BaTiO 3 and SnO 2 .
第一方法可控制印刷步驟,使得每單位面積的光散射粒子的數量根據位置改變至少1.2倍。The first method can control the printing step so that the number of light scattering particles per unit area changes by at least 1.2 times depending on the position.
第一方法可控制印刷步驟,使得光散射層經形成而在第二表面的整個區域上具有一均勻的厚度。The first method can control the printing step so that the light scattering layer is formed to have a uniform thickness over the entire area of the second surface.
第二方法可控制印刷步驟,使得根據位置,光散射層的厚度在1μm至5μm的範圍內。The second method can control the printing step so that the thickness of the light scattering layer is in the range of 1 μm to 5 μm depending on the position.
方法可進一步包括以下步驟:在製造光散射層之後,固化光散射層。The method may further include the step of curing the light scattering layer after manufacturing the light scattering layer.
根據另一態樣,一種導光板可包括:一導光板主體,該導光板主體包含一第一表面、一第二表面與一第三表面,該第一表面面向一前方觀察者且通過該第一表面照射光,該第二表面與該第一表面相對,該第三表面連接到該第一表面的一周圍部分和該第二表面的一周圍部分以連接該第一表面和該第二表面,該第三表面面向一發光二極體;及一光散射層,該光散射層在該第二表面的一整個區域上製造,該光散射層包含一基質層和分散在該基質層中的多個光散射粒子。隨著與面向第三表面的至少一個表面的發光二極體之距離增加,光散射層的厚度可逐漸增加。According to another aspect, a light guide plate may include: a light guide plate main body including a first surface, a second surface, and a third surface, the first surface facing a forward observer and passing through the second surface A surface is irradiated with light, the second surface is opposite to the first surface, and the third surface is connected to a surrounding portion of the first surface and a surrounding portion of the second surface to connect the first surface and the second surface , The third surface faces a light emitting diode; and a light scattering layer, the light scattering layer is made on an entire area of the second surface, the light scattering layer includes a matrix layer and dispersed in the matrix layer Multiple light scattering particles. As the distance from the light emitting diode of at least one surface facing the third surface increases, the thickness of the light scattering layer may gradually increase.
根據又一態樣,一種導光板可包括:一導光板主體,該導光板主體包含一第一表面、一第二表面與一第三表面,該第一表面面向一前方觀察者且通過該第一表面照射光,該第二表面與該第一表面相對,該第三表面連接到該第一表面的一周圍部分和該第二表面的一周圍部分以連接該第一表面和該第二表面,該第三表面面向一發光二極體;及一光散射層,該光散射層在該第二表面的一整個區域上製造,該光散射層包含一基質層和分散在該基質層中的多個光散射粒子。隨著與面向第三表面的至少一個表面的發光二極體相距之距離增加,該等多個光散射粒子的分散密度(dispersion density)可逐漸增加。According to another aspect, a light guide plate may include: a light guide plate main body including a first surface, a second surface, and a third surface, the first surface facing a front observer and passing through the first surface A surface is irradiated with light, the second surface is opposite to the first surface, and the third surface is connected to a surrounding portion of the first surface and a surrounding portion of the second surface to connect the first surface and the second surface , The third surface faces a light emitting diode; and a light scattering layer, the light scattering layer is made on an entire area of the second surface, the light scattering layer includes a matrix layer and dispersed in the matrix layer Multiple light scattering particles. As the distance from the light emitting diode on at least one surface facing the third surface increases, the dispersion density of the plurality of light scattering particles may gradually increase.
在此,可在第二表面的整個區域上以均勻的厚度製造光散射層。Here, the light scattering layer can be manufactured with a uniform thickness over the entire area of the second surface.
光散射層的表面可以是平坦表面。The surface of the light scattering layer may be a flat surface.
光散射層的表面粗糙度可以為100nm或更小。The surface roughness of the light scattering layer may be 100 nm or less.
根據位置,光散射層的厚度在1μm至5μm的範圍內。Depending on the location, the thickness of the light scattering layer is in the range of 1 μm to 5 μm.
該等光散射粒子可由折射率比基質層的折射率高的一材料形成。The light scattering particles may be formed of a material having a refractive index higher than that of the matrix layer.
光散射粒子可由自以下各者中所選之至少一者形成:TiO2 、ZrO2 、BaTiO3 和SnO2 。The light scattering particles may be formed of at least one selected from the following: TiO 2 , ZrO 2 , BaTiO 3 and SnO 2 .
導光板可具有30%或更小的霧度值(hazing value)和50%或更大的透射率。The light guide plate may have a hazing value of 30% or less and a transmittance of 50% or more.
根據另一態樣,一種照明裝置可包括:如上所述的導光板;至少一個發光二極體,該至少一個發光二極體經設置成面向該第三表面的至少一個表面,該第三表面被界定為該導光板的一側表面;及一框架(frame),該框架提供設置該導光板和該發光二極體的一空間。According to another aspect, a lighting device may include: the light guide plate as described above; at least one light-emitting diode, the at least one light-emitting diode is arranged to face at least one surface of the third surface, and the third surface It is defined as a side surface of the light guide plate; and a frame, which provides a space for arranging the light guide plate and the light emitting diode.
當發光二極體打開(on)時,光可通過該第一表面與該第二表面照射,該第一表面被界定為該導光板的前表面,該第二表面被界定為該導光板的後表面。當該發光二極體關閉(off)時,面向第一表面的前方觀察者可以通過該導光板觀察該第二表面。When the light-emitting diode is turned on, light can be irradiated through the first surface and the second surface. The first surface is defined as the front surface of the light guide plate, and the second surface is defined as the front surface of the light guide plate. The back surface. When the light emitting diode is off (off), the front observer facing the first surface can observe the second surface through the light guide plate.
照明裝置可進一步包括反射器,該反射器鄰近該第二表面設置,該第二表面被界定為該導光板的後表面。The lighting device may further include a reflector disposed adjacent to the second surface, and the second surface is defined as a rear surface of the light guide plate.
如上所述,根據本揭示案,包括光散射粒子的光散射層在單一印刷過程中相對於前方觀察者被製造在LGP的後表面的整個區域上。因此,這可以防止擷取的光所通過的發光點為前方觀察者可見之現象,即,由於圖案不匹配或規則的圖案化形狀而導致在先前技術中的噴墨印刷中出現的污點為前方觀察者可見(visible)的問題。As described above, according to the present disclosure, the light-scattering layer including light-scattering particles is manufactured on the entire area of the rear surface of the LGP with respect to the front observer in a single printing process. Therefore, this can prevent the phenomenon that the light-emitting point through which the captured light passes is visible to the front observer, that is, the spot that appears in the inkjet printing in the prior art is the front due to the pattern mismatch or the regular patterned shape. Issues visible to the observer.
此外,根據本揭示案,可以在單一印刷過程中製造光散射層,可以省略設置在LGP前面的擴散器薄片,且附加的層(如在製造透鏡的情況下所需的低表面能量層)可能是不必要的,從而簡化了LGP的製造過程。In addition, according to the present disclosure, the light scattering layer can be manufactured in a single printing process, the diffuser sheet provided in front of the LGP can be omitted, and additional layers (such as the low surface energy layer required in the case of manufacturing lenses) can be omitted. It is unnecessary, thereby simplifying the manufacturing process of the LGP.
此外,根據本揭示案,隨著與設置在LGP側表面上的LED相距的距離增加,相對於印刷溶液的光散射粒子的密度經控制而逐漸增加,或者,隨著與設置在LGP側表面上的LED相距的距離增加,光散射粒子的厚度經控制而逐漸增加。因此,這可以防止過量的光離開LED相鄰的區域的問題,並且可以獲得類似於朗伯分佈的光分佈。In addition, according to the present disclosure, as the distance from the LED disposed on the LGP side surface increases, the density of the light scattering particles relative to the printing solution is controlled to gradually increase, or as the distance from the LED disposed on the LGP side surface increases, The distance between the LEDs increases, and the thickness of the light scattering particles is controlled to gradually increase. Therefore, this can prevent the problem of excessive light leaving the area adjacent to the LED, and can obtain a light distribution similar to the Lambertian distribution.
此外,根據本揭示案,照明裝置可以作為透明照明裝置提供。即,當LED打開時,可以通過LGP的前表面和後表面兩者照射光,以及當LED關閉時,照明裝置後面的任何物體對於前方觀察者係可見的。In addition, according to the present disclosure, the lighting device can be provided as a transparent lighting device. That is, when the LED is turned on, light can be irradiated through both the front surface and the rear surface of the LGP, and when the LED is turned off, any object behind the lighting device is visible to the front observer.
本揭示案的方法和設備具有其他特徵和優點,這些特徵和優點將結合所附圖式和以下實施方式而得以彰顯或在所附圖式和以下實施方式中更詳盡地闡述,所附圖式和以下實施方式一起用於解釋本揭示案的某些原理。The method and device of the present disclosure have other features and advantages. These features and advantages will be highlighted in combination with the accompanying drawings and the following embodiments or will be described in more detail in the accompanying drawings and the following embodiments. Together with the following embodiments, it is used to explain some principles of the present disclosure.
在下文中,將參照所附圖式詳細描述製造導光板(LGP)的方法,由此製造的LGP以及具有此LGP的照明裝置。Hereinafter, the method of manufacturing the light guide plate (LGP), the LGP manufactured thereby, and the lighting device having the LGP will be described in detail with reference to the drawings.
在下述說明中,當包含可能使本揭露的標的不清楚之情況下時,將省略本文併入之習知功能及部件之詳細描述。In the following description, when it contains circumstances that may make the subject matter of the disclosure unclear, the detailed description of the conventional functions and components incorporated herein will be omitted.
如圖1和2所示,根據示例性實施例的製造LGP的方法是製造邊緣發光照明裝置10(見圖3和4)中所使用的LGP 100,邊緣發光照明裝置10係由設置在其邊緣上的發光二極體(LED)所照明。As shown in FIGS. 1 and 2, the method of manufacturing the LGP according to the exemplary embodiment is to manufacture the LGP 100 used in the edge-emitting lighting device 10 (see FIGS. 3 and 4). The edge-emitting lighting device 10 is set on its edge Illuminated by the light-emitting diodes (LED).
就這一點而言,根據示例性實施例的製造LGP的方法包括LGP準備(preparation)步驟S110和光散射層製造步驟S130。根據示例性實施例的製造LGP的方法可進一步包括在光散射層製造步驟S130之前的印刷溶液製造步驟S120。In this regard, a method of manufacturing an LGP according to an exemplary embodiment includes an LGP preparation step S110 and a light scattering layer manufacturing step S130. The method of manufacturing an LGP according to an exemplary embodiment may further include a printing solution manufacturing step S120 before the light scattering layer manufacturing step S130.
首先,在LGP準備步驟S110中,將LGP 100作為透明板準備。例如,可使用由丙烯酸或玻璃形成的基板來實現LGP 100。當使用透明基板來實現LGP 100時,可提供透明LED照明裝置,使得裝置後面的圖像係可見的(visible)。就這點而言,LGP 100可具有30%或更低的霧度值和50%或更高的透射率。根據示例性實施例,面向(facing)前方觀察者且通過其照射光的LGP 100的表面將被稱為「前表面」,與前表面相對(opposite to)的LGP 100的表面將被稱為「後表面」,連接到前表面的周圍和後表面的周圍以連接前表面和後表面的LGP 100的表面將被稱為LGP 100的側表面。First, in the LGP preparation step S110, the LGP 100 is prepared as a transparent plate. For example, a substrate formed of acrylic or glass may be used to realize the LGP 100. When a transparent substrate is used to implement the LGP 100, a transparent LED lighting device can be provided so that the image behind the device is visible. In this regard, the
之後,在印刷溶液製造步驟S120中,製造包括光散射粒子130的印刷溶液。在此,根據示例性實施例,當與先前技術的點圖案印刷溶液相比時,印刷溶液中的光散射粒子130的含量必須非常小。當光散射層製造步驟S130(待在稍後描述)中製造光散射層140時,光散射層140提供表面,而不是形成先前技術的點狀,從而增加了總面積(overall area)。因此,大量的光離開LED 200相鄰的區域。為了克服此問題,當與先前技術的點圖案印刷溶液相比時,光散射粒子130的含量設定為非常小。After that, in the printing solution manufacturing step S120, a printing solution including the
就這點而言,在印刷溶液製造步驟S120中,可將光散射粒子130添加到印刷溶液中,使得光散射粒子130的含量相對於印刷溶液可按重量計在0.1%至5%的範圍內,且優選地可為2%或更少。In this regard, in the printing solution manufacturing step S120, the
在此,根據示例性實施例,可使用具有與印刷溶液材料的折射率不同的折射率之材料來實現光散射粒子130,特別是比印刷溶液的材料的折射率高的折射率的材料。例如,在印刷溶液製造步驟S120中,添加到印刷溶液中的光散射粒子130可以是自以下各者中所選之至少一者:TiO2
、ZrO2
、BaTiO3
和SnO2
。然而,這僅是實例,而光散射粒子130不限於上述材料。而是,可使用具有比印刷溶液的材料的折射率高的折射率的各種其他材料來實現光散射粒子130。這裡,當選擇BaTiO3
用作光散射粒子130時,聚矽氧烷和二丙二醇甲醚(DPM)的混合溶液可用作印刷溶液。然而,這僅是示例,而印刷溶液不限於上述混合溶液。Here, according to an exemplary embodiment, a material having a refractive index different from that of a printing solution material may be used to realize the
例如,當選擇TiO2
用作光散射粒子130時,六亞甲基二丙烯酸酯、外-1,7,7-三甲基二環[2.2.1]庚-2-丙烯酸酯(exo-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl acrylate)、丙烯酸芐酯、2-丙烯酸甲氧基乙酯(2-methoxyethyl acrylate)、及2,4,6-三甲基苯甲醯基)氧化膦(diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide)的混合物可用作印刷溶液。For example, when TiO 2 is selected as the
之後,在光散射層製造步驟S130中,將印刷溶液印刷在LGP 100的後表面的整個區域上,從而形成連續的光散射層140,其中光散射粒子130被分散在其中。如上所述,當將包括具有顯著低含量的光散射粒子130的印刷溶液印刷在LGP 100的後表面的整個區域上時,光散射層140的表面形成平坦表面。即,沒有任何光散射粒子130從光散射層140的表面突出(protrude)。例如,在光散射層140表面上發生散射反射的發光條件下,使用原子力顯微鏡(AFM),從光散射層140的表面的10μm×10μm區域測量出100nm或更少的表面粗糙度(Ra)。如上所述,只有分散在散射層140內的光散射粒子130可以防止擷取的光所通過的發光點為前方觀察者可見之現象,即,由於圖案不匹配或規則的圖案化形狀而導致在先前技術中的噴墨印刷中出現的污點為前方觀察者可見的問題。After that, in the light scattering layer manufacturing step S130, the printing solution is printed on the entire area of the rear surface of the
此外,由於光散射層140被製造形成覆蓋LGP 100的後表面的整個區域的單一表面,而不是被製造為先前技術的點圖案化點(dot-patterned spots),可以省略先前技術中的LGP的製造方法,且不需要附加的層,(如在製造透鏡的情況下所需的低表面能層),從而簡化LGP的製造過程。此外,在根據示例性實施例的光散射層製造步驟S130中,可以在單一印刷過程中製造光散射層140,從而簡化製造過程。In addition, since the
此外,根據示例性實施例的光散射層製造步驟S130使用以下控制印刷過程的方法中的至少一個方法:控制印刷過程的第一方法,使得根據與面向LGP 100側表面的至少一個表面的LED 200相距之距離,在光散射層140中的光散射粒子130的含量依位置特定的方式變化,及控制印刷過程的第二方法,使得根據與面向LGP 100側表面的至少一個表面的LED 200相距之距離,在光散射層140的厚度依位置特定的方式變化。此特徵旨在根據與設置在LGP 100側面上的LED 200相距的距離來調整光擷取效率的差異。即,因為為了實現橫跨整個區域上的均勻光分佈,必須降低較靠近LED 200的區域中的光擷取效率,同時增加離LED 200最遠的區域中的光擷取效率,所以如上所述地控制印刷過程。In addition, the light scattering layer manufacturing step S130 according to an exemplary embodiment uses at least one of the following methods of controlling the printing process: the first method of controlling the printing process makes the
具體地,在光散射層製造步驟S130中使用的第一種方法可控制印刷過程,使得隨著與面向LGP 100側表面的側表面的至少一個表面的LED 200相距的距離增加,相對於印刷溶液的每單位面積的光散射粒子的密度而逐漸增加。例如,在光散射層製造步驟S130中,可控制印刷過程,使得每單位面積的光散射粒子130的數量根據位置變化至少1.2倍。例如,可控制印刷過程,使得分散在與LED 200相鄰的光散射層140的一部分內的光散射粒子130的數量為50%,而分散在離LED 200最遠的光散射層140的一部分內的光散射離子130的數量為80%。在此,在第一方法中,可控制印刷過程,使得光散射層140的厚度在橫跨LGP 100的後表面的整個區域上為均勻的。例如,在第一方法中,準備包括由BaTiO3
形成的光散射粒子的兩種溶液,即其中光散射粒子的重量比為0.5%的溶液和其中光散射粒子的重量比為1.2%的溶液。之後,準備皆能夠使用兩種溶液的噴墨頭。隨後,使用噴墨頭以均勻的厚度印刷光散射層,使得每單位體積的光散射粒子的數量根據位置而變化。在這種情況下,可以藉由連續地改變兩種溶液的注入比率,同時保持整個印刷密度固定,來印刷和製造具有均勻的印刷厚度且每單位體積的光散射粒子數量不同的光散射層。Specifically, the first method used in the light scattering layer manufacturing step S130 can control the printing process so that as the distance from the
此外,在光散射層製造步驟S130中使用的第種方法可控制印刷過程,使得隨著與面向LGP 100的側表面的至少一個表面的LED 200相距的距離增加,光散射層140的厚度逐漸增加。例如,在光散射層製造步驟S130中使用的第二方法中,可控制印刷過程,使得光散射層140的厚度根據位置在1μm至5μm的範圍內。即,在光散射層製造步驟S130中,可控制印刷過程,使得與LED 200相鄰的光散射層140的一部分的厚度為1μm,而在離LED 200最遠的光散射層140的一部分的厚度為5μm。這裡,在光散射層製造步驟S130中,可控制印刷過程,使得與LED 200相鄰的光散射層140的部分的厚度為1μm,以及接著光散射層140的厚度例如以高斯分佈曲線的形式逐漸增加,使得在離LED 200最遠的光散射層140的部分的厚度最終為5μm。在此,當光散射層140的厚度小於1μm時,不能獲得與朗伯分佈相似的光分佈。當光散射層140的厚度超過5μm時,難以使印刷的光散射層140乾燥,這是有問題的。In addition, the first method used in the light scattering layer manufacturing step S130 can control the printing process so that the thickness of the
儘管根據示例性實施例已經將LED 200描述為僅設置在LGP 100的單一側表面上,但是LED 200可設置在LGP 100的相對側表面上。在這種情況下,光散射層140可被製造使得位於LGP 100的中央部分中的其一部分的厚度為最大。即,可在LGP 100的中央區域上提供厚度為5μm的光散射層140的最厚部分。Although the
如上所述,在光散射層製造步驟S130中,可控制光散射粒子130相對於印刷溶液的密度,以便隨著與面向LGP 100的側表面的至少一個表面的LED 200之距離增加,而光散射粒子130相對於印刷溶液的密度逐漸增加,可控制光散射粒子130的厚度,以便依高斯分佈曲線的形式逐漸增加,或者當隨著與面向LGP 100的側表面的至少一個表面的LED 200相距的距離增加,光散射粒子130的密度相對於印刷溶液受控以便逐漸增加時,可控制光散射粒子130的厚度,以便逐漸增加。因此,這可以防止過量的光離開LED 200相鄰的區域的問題,並且可以獲得類似於朗伯分佈的光分佈(見圖8)。As described above, in the light scattering layer manufacturing step S130, the density of the
最後,根據示例性實施例的製造LGP的方法可以進一步包括光散射層固化步驟S140,該步驟S140使在光散射層製造步驟S130中的LGP 100的後表面的整個區域上製造的光散射層140固化。在光散射層固化步驟S140中,可使用直線式的(inline)紫外線(UV)射線固化裝置來固化光散射層140。Finally, the method of manufacturing an LGP according to an exemplary embodiment may further include a light scattering layer curing step S140 that makes the
如圖2所示,當光散射層固化步驟S140完成時,製造根據示例性實施例的LGP 100。即,根據示例性實施例的LGP 100包括LGP主體110,其中LED 200鄰近其側表面設置,且光散射層140被製造在LGP主體110的後表面的整個區域上。此處,光散射層140包括基質層120和分散在基質層120中的多個光散射粒子130。As shown in FIG. 2, when the light scattering layer curing step S140 is completed, the
根據示例性實施例,光散射層140的表面形成平坦表面,其表面粗糙度(Ra)為例如100nm或更少。隨著與LED 200所設置在其上的LGP 100的側表面相距的距離增加,光散射層140的厚度以高斯分佈曲線的形式逐漸增加。最鄰近LED 200的光散射層140的部分的厚度可以是1μm的最小厚度,而最遠離LED 200的光散射層140的部分的厚度可以是5μm的最小厚度。According to an exemplary embodiment, the surface of the
此外,隨著與LED 200所設置在其上的LGP 100的側表面相距的距離增加,光散射粒子130的數量的分散密度可逐漸增加。這裡,光散射粒子130可由折射率高於光散射層140的材料之材料形成。例如,光散射粒子130可由自以下各者中所選之至少一者形成,但不限於以下各者:TiO2
、ZrO2
、BaTiO3
和SnO2
。In addition, as the distance from the side surface of the
如上所述,當隨著與LED 200所設置在其上的LGP 100的側表面相距的距離增加,光散射粒子130的分散密度逐漸增加時,可依橫跨LGP 100後表面的整個區域的厚度均勻來製造光散射層140。As described above, as the distance from the side surface of the
如圖3所示,如上所述,由根據示例性實施例的製造LGP的方法所製造的LGP 100可用於照明裝置10中。As shown in FIG. 3, as described above, the
根據示例性實施例的照明裝置10是邊緣發光照明裝置,其包括如上所述之LGP 100和LED 200以及框架300。The lighting device 10 according to the exemplary embodiment is an edge-emitting lighting device, which includes the
LED 200設置在LGP 100的至少一個側表面上。即,當從圖式中觀察時,LED 200可設置在LGP 100的左側表面、右側表面或左側表面和右側表面兩者上。在此,至少一個LED 200可設置在每個側表面上。此外,框架300提供LGP 100和LED 200所設置在其中的空間。如圖3中所示,框架300可經配置圍繞LGP 100的整個部分,除了光所通過LGP 100而照射的區域之外(即,圖中的上部)。The
這裡,反射器片400可設置在LGP 100的後表面和框架300之間,以將已經離開LGP 100的後表面的光向前反射。Here, the
此外,如圖4所示,框架300可經配置使LGP 100的前表面與後表面暴露。即,矩形門框形狀的框架300可耦接至LGP 100。在這種情況下,當LED 200打開時,光通過LGP 100的暴露的前表面和後表面以相反的方向照射。當LED 200關閉時,LGP 100具有30%以下的霧度值和50%以上的透射率,使得前方觀察者可以透過透明LGP 100看到照明裝置10後面的圖像。In addition, as shown in FIG. 4, the
比較實例1Comparative example 1
準備尺寸為120mm×120mm×2mm的玻璃LGP。對於光散射層,準備可從Atech innovations GmbH取得的包含按重量計12%的TiO2 粒子的白色油墨。在此,白色油墨是六亞甲基二丙烯酸酯、外-1,7,7-三甲基二環[2.2.1]庚-2-丙烯酸酯(exo-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl acrylate)、丙烯酸芐酯、2-丙烯酸甲氧基乙酯(2-methoxyethyl acrylate)、及2,4,6-三甲基苯甲醯基)氧化膦(diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide)的混合物。藉由在LGP上以400×400 dpi(每英吋點數)施行印刷使得LGP的特定區域未被印刷(unprinted)以及藉由調整液滴的尺寸為12pL來賦予濃度梯度。根據濃度梯度,以10%的濃度(即400×400×10%= 每1×1平方英吋16,000滴)來印刷LED相鄰的部分,而距離LED最遠的部分以20%的濃度來印刷。Prepare a glass LGP with a size of 120mm×120mm×2mm. For the light scattering layer, a white ink containing 12% by weight of TiO 2 particles available from Atech innovations GmbH was prepared. Here, the white ink is hexamethylene diacrylate, exo-1,7,7-trimethylbicyclo[2.2.1]heptan-2-acrylate (exo-1,7,7-trimethylbicyclo[2.2 .1] hept-2-yl acrylate, benzyl acrylate, 2-methoxyethyl acrylate, and 2,4,6-trimethylbenzyl phosphine oxide (diphenyl( 2,4,6-trimethylbenzoyl) phosphine oxide). By printing on the LGP at 400×400 dpi (dots per inch), a specific area of the LGP is not printed (unprinted) and by adjusting the droplet size to 12pL to give a concentration gradient. According to the concentration gradient, the adjacent part of the LED is printed at a concentration of 10% (ie 400×400×10% = 16,000 drops per 1×1 square inch), and the part farthest from the LED is printed at a concentration of 20% .
之後,將藉由串聯連接可從Luminus Inc.取得的十二個LED所分別提供的兩個LED條附接到LGP的左側和右側表面,及觀察到最終產品,其中功率為35V和63mA為其供應。此外,使用可自Minolta Co.取得的CS-1000分光輻射計(spectroradiometer)測量亮度。因此,測得的平均正面亮度為4100cd/cm2 。After that, two LED strips respectively provided by twelve LEDs available from Luminus Inc. are attached to the left and right surfaces of the LGP by connecting them in series, and the final product is observed, where the power is 35V and 63mA. supply. In addition, a CS-1000 spectroradiometer (spectroradiometer) available from Minolta Co. was used to measure the brightness. Therefore, the measured average front brightness is 4100 cd/cm 2 .
參考圖5中的圖像,從視覺上識別光所通過而照射的點。在複數個區域中,點之間的相對長的距離超過100μm。這些出現在不規則位置的部分被觀察為黑點。此外,由於印刷點的位置精度的問題,由緻密區域(dense region)和粗糙區域(coarse region)之間的差異引起污點(stain)。此外,如圖6的光分佈圖所示,由於光散射層(即印刷層)厚度小,可知光分佈為在橫向方向上顯著散佈。With reference to the image in FIG. 5, visually recognize the point where the light passes and shines. In a plurality of regions, the relatively long distance between dots exceeds 100 μm. These parts appearing in irregular positions are observed as black spots. In addition, due to the problem of the positional accuracy of the printed dots, stains are caused by the difference between a dense region and a coarse region. In addition, as shown in the light distribution diagram of FIG. 6, since the thickness of the light scattering layer (ie, the printed layer) is small, it can be seen that the light distribution is significantly spread in the lateral direction.
比較實例2Comparative example 2
在與LED相鄰的區域中以30%的濃度施行印刷以及在距LED最遠的區域中以60%的濃度施行印刷,其中將其餘條件控制為與比較實例1相同。Printing was performed at a concentration of 30% in the area adjacent to the LED and printing at a concentration of 60% in the area farthest from the LED, with the remaining conditions controlled to be the same as in Comparative Example 1.
參照圖7中的線圖,該線圖繪示了取決於比較實例1和2所製造的LGP的濃度之位置特定的亮度均勻性,可以理解,比較實例1的位置特定的亮度(即菱形(diamond)標記曲線)具有比比較實例2的位置特定的亮度高的均勻性(即正方形標記曲線)。Referring to the line graph in FIG. 7, the line graph depicts the location-specific brightness uniformity depending on the density of the LGP manufactured in Comparative Examples 1 and 2. It can be understood that the location-specific brightness (that is, diamond ( Diamond) marking curve) has a higher uniformity than the position-specific brightness of Comparative Example 2 (ie, square marking curve).
實例1Example 1
準備可從Corning Inc.(康寧公司)獲得的具有尺寸為120mm×120mm×2mm的IrisTM Glass的板作為LGP。切割IrisTM Glass板,然後使用直線式超音波清潔器(inline ultrasonic cleaner)進行清洗。對於光散射層,準備包括按重量計2%的BaTiO3 粉末的溶液。製備二丙二醇甲醚(DPM)溶液,並將BaTiO3 粉末與分散劑一起輸入並分散在DPM溶液中。將所得溶液與聚矽氧烷混合,使得BaTiO3 粉末的最終含量按重量計為0.3%。之後,藉由將液滴的尺寸調整為12pL,相對於800×800 dpi的印刷密度,根據區域以不同的印刷密度將混合溶液印刷在LGP上。具體言之,藉由賦予濃度梯度來施行印刷,使得以50%的濃度(即,800×800×50%= 每1×1平方英吋320,000液滴)來印刷LED相鄰的部分,以及以80%的濃度(800×800×80%=每1×1平方英吋512,000滴)來印刷距LED最遠的部分。使用具有點陣圖格式的印刷濃度的印刷圖。在印刷後,使用直線式固化裝置使印刷層固化。在此,使用金屬鹵化物燈照射強度為1J/cm2 的光。液滴的數量增加到比較實例1的液滴的數量的約30倍。因此,液滴彼此完全連接,從而形成平坦且平滑的(smooth)印刷表面,同時在印刷層中具有厚度梯度。此處,平滑表面是指光滑的(glossy)平坦表面。A board with Iris ™ Glass having a size of 120 mm×120 mm×2 mm, available from Corning Inc., was prepared as the LGP. Cut the Iris TM Glass board and clean it with an inline ultrasonic cleaner. For the light scattering layer, a solution including 2% by weight of BaTiO 3 powder was prepared. Prepare dipropylene glycol methyl ether (DPM) solution, and input and disperse the BaTiO 3 powder together with the dispersant in the DPM solution. The resulting solution was mixed with polysiloxane so that the final content of BaTiO 3 powder was 0.3% by weight. Afterwards, by adjusting the size of the droplets to 12pL, the mixed solution was printed on the LGP with different printing densities relative to the printing density of 800×800 dpi. Specifically, printing is performed by imparting a concentration gradient so that the adjacent part of the LED is printed at a concentration of 50% (ie, 800×800×50% = 320,000 droplets per 1×1 square inch), and 80% density (800×800×80%=512,000 drops per 1×1 square inch) to print the farthest part from the LED. Use a printed image with a printing density in a dot pattern format. After printing, a linear curing device is used to cure the printed layer. Here, a metal halide lamp is used to irradiate light with an intensity of 1 J/cm 2 . The number of droplets was increased to about 30 times the number of droplets of Comparative Example 1. Therefore, the droplets are completely connected to each other, thereby forming a flat and smooth printing surface while having a thickness gradient in the printing layer. Here, a smooth surface refers to a glossy flat surface.
之後,將藉由串聯連接可從Luminus Inc.取得的十二個LED所分別提供的兩個LED條附接到LGP的左側和右側表面,及觀察到最終產品,其中功率為39和498mA為其供應。此外,使用可自Minolta Co.取得的CS-1000分光輻射計(spectroradiometer)測量亮度。因此,測得的平均正面亮度為14740cd/cm2 。由於該等點彼此連接,因此既沒有觀察到由於印刷濃度不同引起的污點,也沒有觀察到由於液滴之間的間隔引起的暗點。此外,如圖8光分佈圖所示,隨著光散射層(即印刷層)厚度的增加,根據照射光的方向之光分佈更類似於朗伯分佈。如圖9A和9B的圖像所示,當LED關閉時,透明LGP和印刷層允許視覺上識別LGP和印刷層後面的物體,從而提供透明照明裝置。當使用可從BYK-Gardner GmbH獲得的BYK-Gardner霧度計測量時,LGP的透射率和霧度值分別為87%和15%。After that, two LED strips respectively provided by twelve LEDs available from Luminus Inc. were attached to the left and right surfaces of the LGP by connecting them in series, and the final product was observed, where the power was 39 and 498mA. supply. In addition, a CS-1000 spectroradiometer (spectroradiometer) available from Minolta Co. was used to measure the brightness. Therefore, the measured average front brightness is 14740 cd/cm 2 . Since the dots are connected to each other, neither stains due to differences in printing density nor dark dots due to the spacing between droplets are observed. In addition, as shown in the light distribution diagram of FIG. 8, as the thickness of the light scattering layer (ie, the printing layer) increases, the light distribution according to the direction of the irradiated light is more similar to the Lambertian distribution. As shown in the images of FIGS. 9A and 9B, when the LED is turned off, the transparent LGP and the printed layer allow visual recognition of objects behind the LGP and the printed layer, thereby providing a transparent lighting device. When measured using a BYK-Gardner haze meter available from BYK-Gardner GmbH, the transmittance and haze values of the LGP were 87% and 15%, respectively.
本揭示案之特定示例性實施例之上述說明已相對於圖式呈現,其並非意在窮舉或將本揭示案限制於所公開的精確形式,且顯然地,本揭示案所屬技術領域中具有通常知識者鑑於以上教示可能進行許多修改及變化。The above description of the specific exemplary embodiment of the present disclosure has been presented with respect to the drawings, which is not intended to be exhaustive or to limit the present disclosure to the precise form disclosed, and obviously, the technical field of the present disclosure has Generally knowledgeable persons may make many modifications and changes in view of the above teachings.
因此,本揭示案的範圍係意在不限於上述實施例,而是由所附之申請專利範圍及其等效物所定義。Therefore, the scope of the present disclosure is intended not to be limited to the above-mentioned embodiments, but to be defined by the scope of the attached patent application and its equivalents.
S110:LGP準備步驟 S120:印刷溶液製造步驟 S130:光散射層製造步驟 S140:光散射層固化步驟 10:邊緣發光照明裝置 100:導光板(LGP) 110:LGP主體 120:基質層 130:光散射粒子 140:光散射層 200:LED 300:框架 400:反射器片S110: LGP preparation steps S120: Printing solution manufacturing steps S130: light scattering layer manufacturing steps S140: curing step of light scattering layer 10: Edge-emitting lighting device 100: Light guide plate (LGP) 110: LGP body 120: matrix layer 130: light scattering particles 140: light scattering layer 200: LED 300: frame 400: reflector sheet
圖1是繪示根據示例性實施例的製造LGP的方法的處理流程圖;FIG. 1 is a processing flowchart illustrating a method of manufacturing an LGP according to an exemplary embodiment;
圖2是示意性繪示根據示例性實施例製造的LGP的概念圖;FIG. 2 is a conceptual diagram schematically illustrating an LGP manufactured according to an exemplary embodiment;
圖3和圖4是示意性地繪示根據示例性實施例製造的包括LGP的照明裝置的概念圖;3 and 4 are conceptual diagrams schematically illustrating a lighting device including an LGP manufactured according to an exemplary embodiment;
圖5是由觀察比較實例1製造的LGP所獲得的圖像;Figure 5 is an image obtained by observing the LGP manufactured in Comparative Example 1;
圖6是由本揭示案的比較實例1製造的LGP的光分佈圖;6 is a light distribution diagram of the LGP manufactured by Comparative Example 1 of the present disclosure;
圖7是繪示取決於本揭示案的比較實例1和2製造的LGP的濃度之特定位置的亮度均勻性的線圖;FIG. 7 is a line graph showing the brightness uniformity at a specific location depending on the density of the LGP manufactured in Comparative Examples 1 and 2 of the present disclosure;
圖8是本揭示案的實例1製造的LGP的光分佈圖;8 is a light distribution diagram of the LGP manufactured in Example 1 of the present disclosure;
圖9A和圖9B是繪示使用由本揭示案的實例1製造的LGP的照明裝置的圖像;及9A and 9B are images showing the lighting device using the LGP manufactured by Example 1 of the present disclosure; and
圖10和11是繪示相關技術的LGP的示意圖。10 and 11 are schematic diagrams showing related art LGPs.
國內寄存資訊 (請依寄存機構、日期、號碼順序註記) 無Domestic hosting information (please note in the order of hosting organization, date and number) no
國外寄存資訊 (請依寄存國家、機構、日期、號碼順序註記) 無Foreign hosting information (please note in the order of hosting country, institution, date and number) no
S110:LGP準備步驟 S110: LGP preparation steps
S120:印刷溶液製造步驟 S120: Printing solution manufacturing steps
S130:光散射層製造步驟 S130: light scattering layer manufacturing steps
S140:光散射層固化步驟 S140: curing step of light scattering layer
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KR10-2018-0150797 | 2018-11-29 | ||
KR1020180150797A KR20200037718A (en) | 2018-10-01 | 2018-11-29 | Method of fabricating light guide plate, light guide plate fabricated by the same and lighting device having the same |
US16/374,381 US11112559B2 (en) | 2018-10-01 | 2019-04-03 | Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same |
US16/374,381 | 2019-04-03 |
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JP (1) | JP2022504070A (en) |
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US5600455A (en) * | 1994-08-31 | 1997-02-04 | Enplas Corporation | Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface |
JPH08160417A (en) * | 1994-12-01 | 1996-06-21 | Sekisui Chem Co Ltd | Surface light source device |
JP2003534566A (en) * | 2000-05-19 | 2003-11-18 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Polarized emission waveguide |
TWI230300B (en) * | 2003-06-25 | 2005-04-01 | Chunghwa Picture Tubes Ltd | A method for manufacturing a diffuser of the backlight module of a flat panel display device |
KR100656896B1 (en) | 2004-10-28 | 2006-12-12 | 제일모직주식회사 | Surface-functional Light Guiding Plates and Method for Continuous Preparation of the Same |
JP2011150832A (en) * | 2010-01-20 | 2011-08-04 | Fujifilm Corp | Planar lighting device and method for manufacturing the same |
GB2495477A (en) * | 2011-10-04 | 2013-04-17 | Exxelis Ltd | Method of making a lightguide |
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US9133389B2 (en) * | 2012-10-31 | 2015-09-15 | Empire Technology Development Llc | Light guide structure and illuminating device |
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KR20170132257A (en) * | 2015-03-31 | 2017-12-01 | 코닝 인코포레이티드 | Waveguide including light scattering surface and display device comprising same |
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