TW201643485A - Light source module and manufacturing method thereof - Google Patents

Light source module and manufacturing method thereof Download PDF

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Publication number
TW201643485A
TW201643485A TW104117656A TW104117656A TW201643485A TW 201643485 A TW201643485 A TW 201643485A TW 104117656 A TW104117656 A TW 104117656A TW 104117656 A TW104117656 A TW 104117656A TW 201643485 A TW201643485 A TW 201643485A
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TW
Taiwan
Prior art keywords
light
source module
light source
guide plate
light intensity
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Application number
TW104117656A
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Chinese (zh)
Inventor
劉裕猷
林振宏
黃炳鋒
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中強光電股份有限公司
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Publication date
Application filed by 中強光電股份有限公司 filed Critical 中強光電股份有限公司
Priority to TW104117656A priority Critical patent/TW201643485A/en
Priority to CN201510909654.0A priority patent/CN106195693A/en
Publication of TW201643485A publication Critical patent/TW201643485A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/90Methods of manufacture
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0066Light 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
    • G02B6/0073Light emitting diode [LED]

Abstract

A manufacturing method of a light source module, which includes providing a light guide plate, which has a first surface, a second surface opposite to the first surface, an incident surface connecting the first surface and the second surface, and a plurality of optical diffusion micro-units; disposing a reflective sheet on the second surface and measure a light intensity distribution on the first surface while a light beam is incident on the incident surface; when the light intensity distribution on the first surface is different from a predetermined light intensity distribution, disposing a plurality of optical structures on a reflective surface, facing the second surface, of the reflective sheet, so that the light intensity distribution on the first surface approaches the predetermined light intensity distribution. A light source module is also provided.

Description

光源模組及其製作方法 Light source module and manufacturing method thereof

本發明是有關於一種光學裝置及其製作方法,且特別是有關於一種光源模組及其製作方法。 The present invention relates to an optical device and a method of fabricating the same, and more particularly to a light source module and a method of fabricating the same.

顯示科技近年來的發展使得各種顯示器得以普及化,並且逐漸在現代人日常生活中扮演了不可或缺的角色。現有的顯示科技已經應用液晶顯示(Liquid Crystal Display,LCD)面板於例如是電腦螢幕、智慧型手機以及電子書等電子裝置的螢幕,且為了在提升顯示品質的同時可以增加使用上的便利性,上述的顯示器已朝向薄型化的趨勢發展。 The development of display technology in recent years has made various displays popular, and has gradually played an indispensable role in the daily life of modern people. The existing display technology has applied a liquid crystal display (LCD) panel to screens of electronic devices such as computer screens, smart phones, and electronic books, and in order to improve the display quality, the convenience of use can be increased. The above-mentioned displays have been trending toward a trend toward thinning.

然而,由於液晶顯示面板屬於非自發光型的顯示器,故在顯示上必須搭配背光模組。一般而言,背光模組包括線性光源及具有表面微結構的導光板。隨著液晶顯示器的薄型化,背光模組亦朝向薄型化發展,因此導光板(light guide plate)的厚度亦被要求降低。由於薄型化的導光板在藉由例如是網印的加工方法製作表面微結構時更容易因加工過程的疏失而損壞,進而提昇製作 表面微結構時的不穩定性,且製作後的表面結構也無法藉由重工來調整或修復。上述問題不但會降低導光板的製作過程的良率,也提昇了導光板的製作難度及背光模組的成本。因此,如何同時兼顧導光板薄型化生產以及節省製造成本已成為目前亟待解決之問題之一。 However, since the liquid crystal display panel is a non-self-illuminating type display, the backlight module must be matched with the display. In general, the backlight module includes a linear light source and a light guide plate having a surface microstructure. With the thinning of the liquid crystal display, the backlight module is also becoming thinner, and therefore the thickness of the light guide plate is also required to be lowered. Since the thinned light guide plate is more likely to be damaged due to the negligence of the processing process when the surface microstructure is fabricated by a processing method such as screen printing, the production is improved. The instability of the surface microstructure, and the surface structure after fabrication can not be adjusted or repaired by rework. The above problems not only reduce the yield of the light guide plate manufacturing process, but also improve the difficulty of manufacturing the light guide plate and the cost of the backlight module. Therefore, how to simultaneously consider the thinning production of the light guide plate and save the manufacturing cost has become one of the problems to be solved at present.

“先前技術”段落只是用來幫助了解本發明內容,因此 在“先前技術”段落所揭露的內容可能包含一些沒有構成所屬技術領域中具有通常知識者所知道的習知技術。在“先前技術”段落所揭露的內容,不代表該內容或者本發明一個或多個實施例所要解決的問題,在本發明申請前已被所屬技術領域中具有通常知識者所知曉或認知。 The "previous technology" paragraph is only used to help understand the content of the present invention, so The disclosure of the "prior art" section may contain some conventional techniques that are not known to those of ordinary skill in the art. The matters disclosed in the "Prior Art" section, which do not represent the subject matter or the problems to be solved by one or more embodiments of the present invention, are known or recognized by those of ordinary skill in the art prior to the present application.

本發明提出一種光源模組的製作方法,可以避免導光板在加工過程中所造成的損耗,進而提昇製作光學品質良好的光源模組的效率、良率並降低整體成本。 The invention provides a method for manufacturing a light source module, which can avoid the loss caused by the light guide plate during the processing, thereby improving the efficiency, the yield and the overall cost of the optical module with good optical quality.

本發明提出一種光源模組,可以利用較為簡化的架構形成良好的所需光源。 The invention provides a light source module, which can form a good desired light source by using a relatively simplified structure.

本發明提供一種光源模組的製作方法,包括提供一導光板,導光板具有一第一表面、一相對於第一表面的第二表面及一連接第一表面與第二表面的入光面,且導光板具有多個光擴散微單元;在第二表面上配置一反射片、在光束自入光面入射時量測 第一表面上的光強度分佈;當第一表面上的光強度分佈與一預設光強度分佈有差異時,在反射片之朝向第二表面的一反射面上設置多個光學結構,以使第一表面上的光強度分佈趨近於預設光強度分佈。 The present invention provides a method for fabricating a light source module, including providing a light guide plate having a first surface, a second surface opposite to the first surface, and a light incident surface connecting the first surface and the second surface. And the light guide plate has a plurality of light diffusing micro-units; a reflective sheet is disposed on the second surface, and is measured when the light beam is incident on the light incident surface a light intensity distribution on the first surface; when the light intensity distribution on the first surface is different from a predetermined light intensity distribution, a plurality of optical structures are disposed on a reflective surface of the reflective sheet facing the second surface such that The light intensity distribution on the first surface approaches a preset light intensity distribution.

本發明提供一種光源模組,其包括一導光板、一發光單元以及一反射片。導光板具有多個均勻分佈的光擴散微單元,且具有一第一表面、一相對於第一表面的第二表面及一連接第一表面與第二表面的入光面。發光單元配置於入光面旁,且朝向入光面發出一光束。反射片配置於第二表面上,且具有朝向第二表面的一反射面。多個光學結構以非均勻的方式配置於反射面上。 The invention provides a light source module, which comprises a light guide plate, a light emitting unit and a reflection sheet. The light guide plate has a plurality of uniformly distributed light diffusing micro-cells, and has a first surface, a second surface opposite to the first surface, and a light-incident surface connecting the first surface and the second surface. The light emitting unit is disposed beside the light incident surface and emits a light beam toward the light incident surface. The reflective sheet is disposed on the second surface and has a reflective surface facing the second surface. A plurality of optical structures are disposed on the reflective surface in a non-uniform manner.

在本發明的一實施例中,上述的這些光學結構包括多個光擴散(distribution)網點、多個光吸收網點或其組合。 In an embodiment of the invention, the optical structures described above comprise a plurality of light distribution dots, a plurality of light absorbing dots, or a combination thereof.

在本發明的一實施例中,設置上述的這些光學結構的方法為噴墨印刷或網版印刷(screen printing)。 In an embodiment of the invention, the method of providing the optical structures described above is inkjet printing or screen printing.

在本發明的一實施例中,上述的這些光擴散微單元為配置於導光板內部的多個光擴散粒子。 In an embodiment of the invention, the light diffusing micro-units are a plurality of light-diffusing particles disposed inside the light guide plate.

在本發明的一實施例中,上述的這些光擴散微單元為配置於第一表面與第二表面的至少其中之一上的多個表面光學微結構。 In an embodiment of the invention, the light diffusing micro-units are a plurality of surface optical microstructures disposed on at least one of the first surface and the second surface.

在本發明的一實施例中,上述的這些光擴散微單元均勻分佈於導光板中,且設置這些光學結構的步驟包括將這些光學結構設置於反射面之靠近入光面的區域或遠離入光面的區域。 In an embodiment of the invention, the light diffusing micro-units are uniformly distributed in the light guide plate, and the step of disposing the optical structures comprises placing the optical structures on a region of the reflecting surface close to the light incident surface or away from the light entering. The area of the face.

在本發明的一實施例中,上述提供導光板的方法包括以押出製程提供導光板。 In an embodiment of the invention, the method for providing a light guide plate includes providing a light guide plate by an extrusion process.

在本發明的一實施例中,上述的在反射片的反射面上設置這些光學結構的方法是以捲對捲(roll to roll)製程來實現。 In an embodiment of the invention, the above method of arranging the optical structures on the reflective surface of the reflective sheet is accomplished in a roll to roll process.

在本發明的一實施例中,當上述的第一表面上的局部區域的光強度大於預設光強度分佈中對應的預設值時,在反射面上的對應區域設置這些光學結構,以降低局部區域的光強度。 In an embodiment of the invention, when the light intensity of the local area on the first surface is greater than a corresponding preset value in the preset light intensity distribution, the optical structures are disposed on corresponding areas on the reflective surface to reduce The light intensity of the local area.

在本發明的一實施例中,當上述的第一表面上的局部區域的光強度小於預設光強度分佈中對應的預設值時,在反射面上的對應區域設置這些光學結構,以提升局部區域的光強度。 In an embodiment of the invention, when the light intensity of the local area on the first surface is smaller than a corresponding preset value in the preset light intensity distribution, the optical structures are disposed on the corresponding areas on the reflective surface to enhance The light intensity of the local area.

在本發明的一實施例中,上述的光強度分佈與預設光強度分佈中的光強度為輝度。 In an embodiment of the invention, the light intensity distribution and the light intensity in the predetermined light intensity distribution are luminance.

在本發明的一實施例中,上述的這些光學結構設置於反射面上的局部區域,以抑制導光板於對應於局部區域處光強度過強的現象。 In an embodiment of the invention, the optical structures are disposed on a partial area of the reflective surface to suppress a phenomenon that the light guide plate is too strong in intensity corresponding to the local area.

在本發明的一實施例中,上述的這些光學結構設置於反射面上的局部區域,以彌補導光板於對應於局部區域處光強度過低的現象。 In an embodiment of the invention, the optical structures are disposed on a partial area of the reflective surface to compensate for the phenomenon that the light intensity of the light guide plate is too low corresponding to the local area.

在本發明的一實施例中,上述的這些光學結構是以六角排列的方式排列於反射面上。 In an embodiment of the invention, the optical structures are arranged on the reflecting surface in a hexagonal arrangement.

在本發明的一實施例中,上述的這些光學結構包括固化後的白色油墨、固化後的黑色油墨、固化後的透明油墨或其組合。 In an embodiment of the invention, the optical structures described above comprise a cured white ink, a cured black ink, a cured clear ink, or a combination thereof.

在本發明的一實施例中,上述的每一光學結構呈圓點狀。 In an embodiment of the invention, each of the optical structures described above is in the form of a dot.

基於上述,本發明的實施例的光源模組的製作方法在反射片上有設置多個光學結構,因此當光束自導光板的入光面進入導光板時,導光板的第一表面可以具有良好的所需光強度分佈。另一方面,由於本發明的實施例的光源模組藉由這些反射片的光學結構就可以讓導光板在第一表面形成良好的光源,因此降低了光源模組的製作難度,可以避免導光板在加工過程中所造成的損耗,且可以利用較簡化的架構形成良好的所需光源。 Based on the above, the method for fabricating the light source module of the embodiment of the present invention has a plurality of optical structures disposed on the reflective sheet. Therefore, when the light beam enters the light guide plate from the light incident surface of the light guide plate, the first surface of the light guide plate may have a good surface. The required light intensity distribution. On the other hand, the light source module of the embodiment of the present invention can make the light guide plate form a good light source on the first surface by using the optical structure of the reflective sheet, thereby reducing the difficulty in fabricating the light source module and avoiding the light guide plate. The losses caused during processing, and the use of a more simplified architecture to form a good desired source.

為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。 The above described features and advantages of the invention will be apparent from the following description.

A、B、C‧‧‧區域 A, B, C‧‧‧ areas

L1、L2、L3、L4、L5、L6、L7‧‧‧光束 L1, L2, L3, L4, L5, L6, L7‧‧‧ beams

100、100A、100B、100C‧‧‧光源模組 100, 100A, 100B, 100C‧‧‧ light source module

110、110A、110B、110C‧‧‧導光板 110, 110A, 110B, 110C‧‧‧ light guide plate

112、112A、112B、112C‧‧‧第一表面 112, 112A, 112B, 112C‧‧‧ first surface

114、114B、114C‧‧‧第二表面 114, 114B, 114C‧‧‧ second surface

116、116A、116B、116C‧‧‧入光面 116, 116A, 116B, 116C‧‧‧ into the glossy surface

117‧‧‧表面 117‧‧‧ surface

118、118A、118B‧‧‧光擴散微單元 118, 118A, 118B‧‧‧Light diffusing microcells

120、120A、120B、120C‧‧‧反射片 120, 120A, 120B, 120C‧‧‧ reflection film

122、122A、122B、122C‧‧‧反射面 122, 122A, 122B, 122C‧‧‧ reflective surface

124、124A、124B、124C‧‧‧光學結構 124, 124A, 124B, 124C‧‧‧ optical structure

125‧‧‧光擴散網點 125‧‧‧Light diffusion network

130、130A、130B、130C‧‧‧發光單元 130, 130A, 130B, 130C‧‧‧ lighting units

140、140A、140B‧‧‧光學膜片 140, 140A, 140B‧‧‧ optical diaphragm

圖1A至圖1C是依照本發明的第一實施例的一種光源模組的製作方法的示意圖。 1A to 1C are schematic views of a method of fabricating a light source module in accordance with a first embodiment of the present invention.

圖2是依照本發明的第一實施例的反射面及光學結構的局部放大圖。 Figure 2 is a partial enlarged view of a reflecting surface and an optical structure in accordance with a first embodiment of the present invention.

圖3是依照本發明第二實施例的光源模組的示意圖。 3 is a schematic diagram of a light source module in accordance with a second embodiment of the present invention.

圖4是依照本發明第三實施例的光源模組的示意圖。 4 is a schematic diagram of a light source module in accordance with a third embodiment of the present invention.

圖5是依照本發明第四實施例的光源模組的示意圖。 Figure 5 is a schematic illustration of a light source module in accordance with a fourth embodiment of the present invention.

有關本發明之前述及其他技術內容、特點與功效,在以 下配合參考圖式之多個實施例的詳細說明中,將可清楚的呈現。 以下實施例中所提到的方向用語,例如「上」、「下」、「前」、「後」、「左」、「右」等,僅是參考附加圖式的方向。因此,使用的方向用語是用來說明,而非用來限制本發明。 The foregoing and other technical contents, features and effects of the present invention are The detailed description of the various embodiments of the present invention will be apparent from the following description. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only directions referring to the additional schema. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

圖1A至圖1C是依照本發明的第一實施例的一種光源模組的製作方法的示意圖。在本發明的第一實施例所參照的示意圖中,為了清楚說明各元件之間的相對關係及其所能帶來的效果,圖中僅示例性地繪示出部分光束的傳遞路徑,其並非用以限定本發明的光源模組中的光束傳遞方式。請參考圖1A,本發明的第一實施例的光源模組的製作方法提供了一導光板110。導光板110具有一第一表面112、一相對於第一表面112的第二表面114及一連接第一表面112與第二表面114的入光面116,且導光板110具有多個光擴散微單元118。在本實施例中,這些光擴散微單元118分佈於導光板110中,且當一光束傳遞至這些光擴散微單元118時,這些光擴散微單元118適於讓光束往多個方向傳遞。換句話說,這些光擴散微單元118適於讓光束擴散。 1A to 1C are schematic views of a method of fabricating a light source module in accordance with a first embodiment of the present invention. In the schematic diagram referred to in the first embodiment of the present invention, in order to clearly explain the relative relationship between the elements and the effects thereof, only the partial light beam transmission path is exemplarily illustrated in the drawings, which is not It is used to define the beam transmission mode in the light source module of the present invention. Referring to FIG. 1A, a method for fabricating a light source module according to a first embodiment of the present invention provides a light guide plate 110. The light guide plate 110 has a first surface 112, a second surface 114 opposite to the first surface 112, and a light incident surface 116 connecting the first surface 112 and the second surface 114, and the light guide plate 110 has a plurality of light diffusion micro Unit 118. In the present embodiment, the light diffusing micro-units 118 are distributed in the light guide plate 110, and when a light beam is transmitted to the light diffusing micro-units 118, the light-diffusing micro-units 118 are adapted to transmit the light beams in a plurality of directions. In other words, these light diffusing microcells 118 are adapted to diffuse the light beam.

請參照圖1B,本實施例的光源模組的製作方法在導光板110的第二表面114上配置一反射片120。反射片120適於反射來自第二表面114的光束(此處以光束L2為例),進而使反射後的光束(此處以光束L2為例)可以自第一表面112穿出導光板110。舉例來說,本實施例的導光板110接收例如是發光單元130所發出的光束(此處以光束L1為例)。藉由導光板110的傳遞、光擴 散微單元118的擴散及反射片120的反射,光束(此處以光束L1為例)可以自入光面116進入導光板110後再穿出第一表面112。 本實施例的光源模組的製作方法在光束(此處以光束L1為例)自入光面116入射時,以例如是輝度計(brightness meter)量測光束在第一表面112上所形成的光強度分佈。 Referring to FIG. 1B , in the method for fabricating the light source module of the embodiment, a reflective sheet 120 is disposed on the second surface 114 of the light guide plate 110 . The reflective sheet 120 is adapted to reflect the light beam from the second surface 114 (herein the light beam L2 is exemplified), so that the reflected light beam (herein the light beam L2 is exemplified) can pass through the light guide plate 110 from the first surface 112. For example, the light guide plate 110 of the present embodiment receives, for example, a light beam emitted by the light emitting unit 130 (here, the light beam L1 is taken as an example). Transmission by light guide plate 110, optical expansion The diffusion of the diffusing unit 118 and the reflection of the reflective sheet 120, the light beam (herein, the light beam L1 as an example) can enter the light guide plate 110 from the light incident surface 116 and then exit the first surface 112. In the method of fabricating the light source module of the present embodiment, when the light beam (herein, the light beam L1 is taken as an example) is incident on the light surface 116, the light formed on the first surface 112 is measured by, for example, a brightness meter. Intensity distribution.

在藉由上述的方式測得第一表面112上的光強度分佈的相關數據後,光強度分佈的相關數據會與一預設光強度分佈數據比較。上述的預設光強度分佈例如是所欲製作的光源模組在最佳狀態時的光強度分佈,本發明並不以此為限,而藉由上述的比較可以得知第一表面112是否在部分區域有亮度過高、過低的問題。 請參照圖1C,當第一表面112上的光強度分佈與預設光強度分佈有差異時,本實施例的光源模組100的製作方法在反射片120之朝向第二表面114的一反射面122上設置多個光學結構124,以使第一表面112上的光強度分佈趨近於預設光強度分佈。 After the correlation data of the light intensity distribution on the first surface 112 is measured by the above method, the correlation data of the light intensity distribution is compared with a predetermined light intensity distribution data. The preset light intensity distribution is, for example, the light intensity distribution of the light source module to be fabricated in an optimal state. The present invention is not limited thereto, and it can be known from the above comparison whether the first surface 112 is Some areas have problems of excessive brightness and low brightness. Referring to FIG. 1C , when the light intensity distribution on the first surface 112 is different from the preset light intensity distribution, the light source module 100 of the present embodiment is formed on a reflective surface of the reflective sheet 120 facing the second surface 114 . A plurality of optical structures 124 are disposed on the 122 such that the light intensity distribution on the first surface 112 approaches a predetermined light intensity distribution.

換句話說,本實施例的反射片120可以反射來自第二表面114的光束,且這些光學結構124可以改變經反射片120反射後進入導光板110的光強度分佈,進而使第一表面112的光強度分佈可以藉由這些光學結構124的補償來趨近於預設光強度分佈。 In other words, the reflective sheet 120 of the present embodiment can reflect the light beam from the second surface 114, and the optical structures 124 can change the light intensity distribution that is reflected by the reflective sheet 120 and enter the light guide plate 110, thereby making the first surface 112 The light intensity distribution can be approximated by a predetermined light intensity distribution by compensation of these optical structures 124.

因此,本實施例的製作方法可以藉由形成這些光學結構 124來輕易製作出良好的光源模組100。當光束自入光面116進入導光板110時,形成於反射面122的光學結構124可以讓第一表面112的光強度分佈趨近於預設光強度分佈,因此導光板110可 以不需要額外的加工及微結構設計(例如網版印刷之加工),進而降低了導光板110的製作難度。另一方面,由於本實施例的光源模組100的製造方法在量測第一表面112上的光強度分佈後,可以再藉由在反射面122形成光學結構124來補償第一表面112上的光強度分佈,進而避免了在光源模組100的製作過程中因導光板110的導光效果不佳而報廢整組光源模組110,提供了較簡化的架構來形成良好的所需光源,同時也提昇了在製作導光板110時的良率。 Therefore, the fabrication method of this embodiment can form these optical structures 124 to easily produce a good light source module 100. When the light beam enters the light guide plate 110 from the light incident surface 116, the optical structure 124 formed on the reflective surface 122 can make the light intensity distribution of the first surface 112 approach the preset light intensity distribution, so the light guide plate 110 can be The additional processing and microstructure design (such as screen printing processing) is not required, thereby reducing the difficulty in fabricating the light guide plate 110. On the other hand, since the manufacturing method of the light source module 100 of the present embodiment measures the light intensity distribution on the first surface 112, the optical structure 124 can be formed on the reflective surface 122 to compensate the first surface 112. The light intensity distribution further avoids the scraping of the entire set of light source modules 110 due to poor light guiding effect of the light guide plate 110 during the manufacturing process of the light source module 100, and provides a simplified structure to form a good desired light source. The yield at the time of fabricating the light guide plate 110 is also improved.

本實施例的製作方法更可以形成例如是增亮膜(Brightness Enhancement Film)、擴散膜(Diffuser Film)等的光學膜片140於第一表面112上,本發明不限於此。詳細來說,請參照圖1C,在本實施例中,光源模組100包括導光板110、發光單元130(例如:發光二極體(Light Emitting Diode,LED))以及反射片120。光源模組100的導光板110具有多個均勻分佈的光擴散微單元118,且上述的這些光擴散微單元118為配置於導光板110內部的多個光擴散粒子,而導光板110在傳遞光束時可以藉由這些以非均勻的方式配置於反射面122上的光學結構124補償局部區域的光強度分佈,進而使光源模組100可以以預設光強度分佈發出光束。發光單元130配置於入光面116旁,且朝向入光面116發出光束L。光束L在導光板110中傳遞時經由光擴散微單元118的擴散或反射片120的反射後自第一表面112發出,進而使第一表面112上的光強度分佈趨近於預設光強度分佈。 The optical film sheet 140 such as a brightness enhancement film, a diffuser film, or the like may be formed on the first surface 112, and the present invention is not limited thereto. In detail, referring to FIG. 1C , in the embodiment, the light source module 100 includes a light guide plate 110 , a light emitting unit 130 (for example, a light emitting diode (LED)), and a reflective sheet 120 . The light guide plate 110 of the light source module 100 has a plurality of uniformly distributed light diffusion micro-units 118, and the light diffusion micro-units 118 are a plurality of light-diffusing particles disposed inside the light guide plate 110, and the light guide plate 110 transmits the light beam. The optical structure 124 disposed on the reflective surface 122 in a non-uniform manner compensates for the light intensity distribution of the local region, so that the light source module 100 can emit a light beam with a preset light intensity distribution. The light emitting unit 130 is disposed beside the light incident surface 116 and emits a light beam L toward the light incident surface 116. When the light beam L is transmitted through the light guide plate 110, it is emitted from the first surface 112 via the diffusion of the light diffusion micro-unit 118 or the reflection of the reflection sheet 120, so that the light intensity distribution on the first surface 112 approaches the preset light intensity distribution. .

圖2是依照本發明的第一實施例的反射面及光學結構的局部放大圖。請參照圖2,在本實施例中,上述的這些光學結構124包括多個光擴散網點125。更具體來說,這些光擴散網點125例如是固化後的白色油墨或固化後的透明油墨或上述兩者的組合,且這些光擴散網點125例如是以噴墨印刷的方式形成於反射面122上,因此本發明的實施例的光源模組的製作方法可以輕易的形成光學結構124於反射面122上,也提供了一個可以輕易形成良好的光源模組的製作方法,但本發明不限於此。在其他實施例中,光學結構124更可以包括多個光吸收網點或上述這些光擴散網點和光吸收網點的組合,其中光吸收網點例如是固化後的黑色油墨,且這些光學結構124更可以是以網版印刷形成。進一步來說,在本發明的其他實施例中,在反射片的反射面上設置這些光學結構的方法更可以是以捲對捲製程來實現,進而可以在例如是量產時提供更高效率的光源模組製作方式。 Figure 2 is a partial enlarged view of a reflecting surface and an optical structure in accordance with a first embodiment of the present invention. Referring to FIG. 2, in the embodiment, the optical structures 124 described above include a plurality of light diffusion dots 125. More specifically, the light diffusion dots 125 are, for example, a cured white ink or a cured transparent ink or a combination of the two, and the light diffusion dots 125 are formed on the reflective surface 122 by, for example, inkjet printing. Therefore, the manufacturing method of the light source module of the embodiment of the present invention can easily form the optical structure 124 on the reflective surface 122, and also provides a manufacturing method that can easily form a good light source module, but the invention is not limited thereto. In other embodiments, the optical structure 124 may further comprise a plurality of light absorbing dots or a combination of the light diffusion dots and the light absorbing dots, wherein the light absorbing dots are, for example, cured black inks, and the optical structures 124 may be Screen printing is formed. Further, in other embodiments of the present invention, the method of arranging the optical structures on the reflective surface of the reflective sheet can be realized by a roll-to-roll process, thereby providing higher efficiency in, for example, mass production. Light source module production method.

請參照圖2,在本發明的第一實施例中,這些光擴散網點125例如是以噴墨印刷的方式所形成的圓點狀光學結構124,且經由上述的方式可以讓這些光學結構124是以六角排列的高密度排列方式排列於反射面122上,進而提供一個最佳的光強度補償效果。本發明的實施例的這些光學結構更可以視需求以其他方式排列於反射面,並不限於上述光學結構124的排列方式。另一方面,在本實施例的光源模組100的製作方法中,當第一表面112上的局部區域的光強度大於預設光強度分佈中對應的預設值時,利用 在反射面122上的對應區域設置這些光學結構124,以降低上述局部區域的光強度。換句話說,本實施例的光源模組100的這些光學結構124設置於反射面122上的局部區域,並藉由光學結構124對光的擴散或吸收來抑制導光板110於對應於局部區域處光強度過強的現象。 Referring to FIG. 2, in the first embodiment of the present invention, the light diffusion dots 125 are, for example, dot-shaped optical structures 124 formed by inkjet printing, and the optical structures 124 can be made through the above manner. Arranged on the reflecting surface 122 in a high-density arrangement of hexagonal arrays to provide an optimum light intensity compensation effect. The optical structures of the embodiments of the present invention may be arranged on the reflective surface in other ways as needed, and are not limited to the arrangement of the optical structures 124 described above. On the other hand, in the manufacturing method of the light source module 100 of the embodiment, when the light intensity of the local area on the first surface 112 is greater than the corresponding preset value in the preset light intensity distribution, These optical structures 124 are disposed on corresponding areas on the reflective surface 122 to reduce the light intensity of the localized regions described above. In other words, the optical structures 124 of the light source module 100 of the present embodiment are disposed on a partial area on the reflective surface 122, and the light guide plate 110 is inhibited from being diffused or absorbed by the optical structure 124 to correspond to the local area. The phenomenon of excessive light intensity.

具體來說,在本發明的第一實施例中,由於例如是塑膠材質所形成的這些光擴散微單元118均勻分佈於導光板110中,這些光學結構124設置於反射面之122遠離入光面116的區域A。 由於導光板110遠離入光面116的局部區域除了會有光束(這邊以光束L3、L4為例)在往表面117傳遞的過程中穿出第二表面114,還會有光束經表面117反射後再穿出第二表面114,進而使反射片120的區域A的局部光強度較高。本實施例的光源模組100藉由光學結構124來擴散照射到區域A中的部分光束(這邊以光束L3為例),進而使導光板110的第一表面112的光強度分佈趨近於預設光強度分佈。 Specifically, in the first embodiment of the present invention, since the light diffusing micro-units 118 formed by, for example, a plastic material are uniformly distributed in the light guide plate 110, the optical structures 124 are disposed on the reflecting surface 122 away from the light-incident surface. Area A of 116. Since the light guide plate 110 is away from the light incident surface 116, a light beam (which is exemplified by the light beams L3, L4) passes through the second surface 114 during the transfer to the surface 117, and a light beam is reflected by the surface 117. The second surface 114 is then passed through to further increase the local light intensity of the region A of the reflective sheet 120. The light source module 100 of the present embodiment diffuses the partial light beam in the region A by the optical structure 124 (the light beam L3 is taken as an example), thereby bringing the light intensity distribution of the first surface 112 of the light guide plate 110 closer to Preset light intensity distribution.

在本發明的實施例中,光學結構在反射面的位置並不限於上述實施例所述遠離入光面的局部區域,光學結構的分佈區域更可以視導光板的厚度、材質及光擴散微單元的大小、材質、密度及預設光強度分佈來適度調整。以下將列舉其他實施例以作為說明。在此必須說明的是,下述實施例沿用前述實施例的元件標號與部分內容,其中採用相同的標號來表示相同或近似的元件,並且省略了相同技術內容的說明。關於省略部分的說明可參考前 述實施例,下述實施例不再重複贅述。 In the embodiment of the present invention, the position of the optical structure on the reflecting surface is not limited to the partial area away from the light incident surface in the above embodiment, and the distribution area of the optical structure may further depend on the thickness, material and light diffusing micro unit of the light guide plate. The size, material, density, and preset light intensity distribution are adjusted appropriately. Other embodiments are listed below for illustration. It is to be noted that the following embodiments use the same reference numerals and parts of the above-mentioned embodiments, and the same reference numerals are used to refer to the same or similar elements, and the description of the same technical content is omitted. For a description of the omitted part, please refer to the previous The embodiments are not described again in the following embodiments.

圖3是依照本發明第二實施例的光源模組的示意圖。請參考圖3,光源模組100A與光源模組100大致相似,惟二者主要差異之處在於:在本發明的第二實施例中,導光板110A的這些光擴散微單元118A為配置於第一表面112A的多個表面光學微結構,且光學結構124A設置於靠近入光面116A的區域B。本實施例的光學結構124A例如是光吸收網點,因此當發光單元130A所發出的光束自入光面116A進入導光板110A後,反射面122A上的光學結構124A可以吸收部分傳遞到反射片120A的區域B的光束,進而使第一表面112A上及光學膜片140A上的光強度分佈可以趨近於預設光強度分佈。 3 is a schematic diagram of a light source module in accordance with a second embodiment of the present invention. Referring to FIG. 3, the light source module 100A is substantially similar to the light source module 100, but the main difference between the two is that, in the second embodiment of the present invention, the light diffusing micro-units 118A of the light guide plate 110A are disposed in the first embodiment. A plurality of surface optical microstructures of a surface 112A, and the optical structure 124A is disposed adjacent to the region B of the light incident surface 116A. The optical structure 124A of the present embodiment is, for example, a light absorbing mesh point. Therefore, after the light beam emitted from the light emitting unit 130A enters the light guide plate 110A from the light incident surface 116A, the optical structure 124A on the reflective surface 122A can be partially transmitted to the reflective sheet 120A. The beam of region B, in turn, causes the light intensity distribution on first surface 112A and on optical film 140A to approach a predetermined light intensity distribution.

圖4是依照本發明第三實施例的光源模組的示意圖。請參考圖4,光源模組100B與光源模組100A大致相似,惟二者主要差異之處在於:在本發明的第三實施例中,導光板110B的這些光擴散微單元118B為配置於第二表面114B的多個表面光學微結構,且光學結構124B設置於遠離入光面116B的區域A。本實施例的光學結構124B例如是光吸收網點及光擴散網點的組合,因此當發光單元130B所發出的光束自入光面116B進入導光板110B後,反射面122B上的光學結構124B可以吸收或擴散部分傳遞到反射片120B的區域A的光束,進而使第一表面112B上及光學膜片140B上的光強度分佈可以趨近於預設光強度分佈。 4 is a schematic diagram of a light source module in accordance with a third embodiment of the present invention. Referring to FIG. 4, the light source module 100B is substantially similar to the light source module 100A, but the main difference between the two is that, in the third embodiment of the present invention, the light diffusing micro-units 118B of the light guide plate 110B are disposed in the first A plurality of surface optical microstructures of the two surfaces 114B, and the optical structure 124B is disposed in a region A remote from the light incident surface 116B. The optical structure 124B of the present embodiment is, for example, a combination of a light absorbing mesh point and a light diffusing mesh point. Therefore, when the light beam emitted from the light emitting unit 130B enters the light guide plate 110B from the light incident surface 116B, the optical structure 124B on the reflective surface 122B can be absorbed or The diffused portion is transmitted to the light beam of the region A of the reflective sheet 120B, so that the light intensity distribution on the first surface 112B and on the optical film 140B can approach the preset light intensity distribution.

圖5是依照本發明第四實施例的光源模組的示意圖。在 本發明的實施例中,形成於反射面上的光學結構並不限於上述可以吸收光束或擴散光束的光學結構124。請參照圖5,在本發明的第五實施例中,發光單元130C發出光束L5至導光板110C的入光面116C,當第一表面112C上的局部區域的光強度分佈過低時,反射面122C上更可以在對應的區域(此處以區域C為例)形成具有高反射率的光學結構124C,因此反射片120C的反射面的反射面122C和光學結構124C都可以往第二表面114C反射光束L6、L7,進而使第一表面112C上光強度分佈過低的局部區域的光強度得以提升,而獲得補償。換句話說,在反射面122C上的光學結構124C可以彌補導光板110C於對應於上述局部區域處的光強度過低的現象。 Figure 5 is a schematic illustration of a light source module in accordance with a fourth embodiment of the present invention. in In an embodiment of the invention, the optical structure formed on the reflective surface is not limited to the optical structure 124 described above that can absorb or diffuse the beam. Referring to FIG. 5, in the fifth embodiment of the present invention, the light emitting unit 130C emits the light beam L5 to the light incident surface 116C of the light guide plate 110C. When the light intensity distribution of the local region on the first surface 112C is too low, the reflective surface On the 122C, the optical structure 124C having high reflectivity can be formed in the corresponding region (here, the region C is taken as an example), so that the reflective surface 122C and the optical structure 124C of the reflective surface of the reflective sheet 120C can reflect the light beam toward the second surface 114C. L6, L7, in turn, the light intensity of the local region where the light intensity distribution on the first surface 112C is too low is increased, and compensation is obtained. In other words, the optical structure 124C on the reflecting surface 122C can compensate for the phenomenon that the light intensity of the light guiding plate 110C at the local area corresponding to the above is too low.

在本發明上述的實施例中,由於導光板具有均勻分佈的 光擴散微單元,因此上述導光板可以例如是以押出製程的方式來製作,但本發明不限於此。換句話說,由於本發明的實施例中的光學模組藉由反射片就可以提供良好的光源,且導光板以均勻的材質形成,因此本發明的實施例提供了更簡易的提供導光板的方式。 In the above embodiments of the present invention, since the light guide plate has a uniform distribution The light diffusing microcell, so the above light guide plate can be produced, for example, in an extrusion process, but the invention is not limited thereto. In other words, since the optical module in the embodiment of the present invention can provide a good light source by the reflective sheet, and the light guide plate is formed of a uniform material, the embodiment of the present invention provides a simpler provision of the light guide plate. the way.

在本發明上述的實施例中,上述的光強度分佈與預設光 強度分佈中的光強度為輝度,但本發明不限於此。在其他實施例中,導光板的第一表面的光強度分佈更可以視預設光強度分佈的單位及需求來作適度地調整。 In the above embodiments of the present invention, the light intensity distribution and the preset light are The light intensity in the intensity distribution is luminance, but the present invention is not limited thereto. In other embodiments, the light intensity distribution of the first surface of the light guide plate can be appropriately adjusted according to the unit and demand of the preset light intensity distribution.

綜上所述,本發明的實施例的光源模組的製作方法先量 測導光板的第一表面上的光強度分佈,再根據上述光強度分佈與預設光強度分佈的比較結果而在反射片上設置多個光學結構,藉由這些光學結構來補償第一表面上的光強度分佈。由於上述的方法不需對導光板額外加工,因此可以避免導光板在加工過程中所造成的損耗,同時大幅提昇光源模組的製作良率,進而利用較簡化的架構來形成良好的所需光源。本發明的實施例的光源模組的發光單元所發出的光束自導光板的入光面進入導光板時,導光板的第一表面可以具有良好的所需光強度分佈,且由於光源模組藉由這些反射片的光學結構就可以讓導光板在第一表面提供良好的光源,進而降低光源模組的製作難度。 In summary, the method for fabricating the light source module of the embodiment of the present invention is first Measuring a light intensity distribution on the first surface of the light guide plate, and then providing a plurality of optical structures on the reflective sheet according to the comparison result between the light intensity distribution and the preset light intensity distribution, wherein the optical structures compensate the first surface Light intensity distribution. Since the above method does not need to additionally process the light guide plate, the loss caused by the light guide plate during the processing process can be avoided, and the production yield of the light source module is greatly improved, and a relatively simplified structure is used to form a good desired light source. . When the light beam emitted by the light emitting unit of the light source module of the embodiment of the present invention enters the light guide plate from the light incident surface of the light guide plate, the first surface of the light guide plate may have a good desired light intensity distribution, and the light source module borrows The optical structure of the reflective sheets allows the light guide plate to provide a good light source on the first surface, thereby reducing the difficulty in fabricating the light source module.

A‧‧‧區域 A‧‧‧ area

L1、L3、L4‧‧‧光束 L1, L3, L4‧‧‧ beams

100‧‧‧光源模組 100‧‧‧Light source module

110‧‧‧導光板 110‧‧‧Light guide plate

112‧‧‧第一表面 112‧‧‧ first surface

114‧‧‧第二表面 114‧‧‧ second surface

116‧‧‧入光面 116‧‧‧Into the glossy surface

117‧‧‧表面 117‧‧‧ surface

118‧‧‧光擴散微單元 118‧‧‧Light diffusing microcells

120‧‧‧反射片 120‧‧‧reflector

122‧‧‧反射面 122‧‧‧reflecting surface

124‧‧‧光學結構 124‧‧‧Optical structure

130‧‧‧發光單元 130‧‧‧Lighting unit

140‧‧‧光學膜片 140‧‧‧Optical diaphragm

Claims (22)

一種光源模組的製作方法,包括:提供一導光板,其中該導光板具有多個光擴散微單元,且具有一第一表面、一相對於該第一表面的第二表面及一連接該第一表面與該第二表面的入光面;在該第二表面上配置一反射片;從該入光面入射一光束,並量測該第一表面上的光強度分佈;以及當該第一表面上的該光強度分佈與一預設光強度分佈有差異時,在該反射片之朝向該第二表面的一反射面上設置多個光學結構,以使該第一表面上的該光強度分佈趨近於該預設光強度分佈。 A method for fabricating a light source module, comprising: providing a light guide plate, wherein the light guide plate has a plurality of light diffusing micro-cells, and has a first surface, a second surface opposite to the first surface, and a connection a light incident surface of the surface and the second surface; a reflective sheet disposed on the second surface; a light beam incident from the light incident surface, and measuring a light intensity distribution on the first surface; and when the first When the light intensity distribution on the surface is different from a predetermined light intensity distribution, a plurality of optical structures are disposed on a reflective surface of the reflective sheet facing the second surface such that the light intensity on the first surface The distribution approaches the predetermined light intensity distribution. 如申請專利範圍第1項所述的光源模組的製作方法,其中該些光學結構包括多個光擴散網點、多個光吸收網點或其組合。 The method of fabricating a light source module according to claim 1, wherein the optical structures comprise a plurality of light diffusion dots, a plurality of light absorption dots, or a combination thereof. 如申請專利範圍第1項所述的光源模組的製作方法,其中設置該些光學結構的方法為噴墨印刷或網版印刷。 The method for fabricating a light source module according to claim 1, wherein the method of providing the optical structures is inkjet printing or screen printing. 如申請專利範圍第1項所述的光源模組的製作方法,其中該些光擴散微單元為配置於該導光板內部的多個光擴散粒子。 The method for fabricating a light source module according to claim 1, wherein the light diffusing micro-units are a plurality of light-diffusing particles disposed inside the light guide plate. 如申請專利範圍第1項所述的光源模組的製作方法,其中該些光擴散微單元為配置於該第一表面與該第二表面的至少其中之一上的多個表面光學微結構。 The method of fabricating a light source module according to claim 1, wherein the light diffusing micro-units are a plurality of surface optical microstructures disposed on at least one of the first surface and the second surface. 如申請專利範圍第1項所述的光源模組的製作方法,其中該些光擴散微單元均勻分佈於該導光板中,且設置該些光學結構的步驟包括將該些光學結構設置於該反射面之靠近該入光面的區域或遠離該入光面的區域。 The method of fabricating a light source module according to claim 1, wherein the light diffusing micro-units are evenly distributed in the light guiding plate, and the step of disposing the optical structures comprises setting the optical structures to the reflecting The area near the entrance surface or the area away from the light entrance surface. 如申請專利範圍第1項所述的光源模組的製作方法,其中提供該導光板的方法包括以押出製程提供該導光板。 The method for fabricating a light source module according to claim 1, wherein the method for providing the light guide plate comprises providing the light guide plate by an extrusion process. 如申請專利範圍第1項所述的光源模組的製作方法,其中在該反射片的該反射面上設置該些光學結構的方法是以捲對捲製程來實現。 The method of fabricating a light source module according to claim 1, wherein the method of disposing the optical structures on the reflective surface of the reflective sheet is implemented by a roll-to-roll process. 如申請專利範圍第1項所述的光源模組的製作方法,其中當該第一表面上的局部區域的光強度大於該預設光強度分佈中對應的預設值時,在該反射面上的對應區域設置該些光學結構,以降低該局部區域的該光強度。 The method of manufacturing the light source module of claim 1, wherein when the light intensity of the local area on the first surface is greater than a corresponding preset value in the predetermined light intensity distribution, the reflective surface is The corresponding regions are arranged to reduce the light intensity of the local region. 如申請專利範圍第1項所述的光源模組的製作方法,其中當該第一表面上的局部區域的光強度小於該預設光強度分佈中對應的預設值時,在該反射面上的對應區域設置該些光學結構,以提升該局部區域的該光強度。 The method of manufacturing the light source module of claim 1, wherein when the light intensity of the local area on the first surface is less than a corresponding preset value in the predetermined light intensity distribution, the reflective surface is The corresponding regions are arranged to enhance the light intensity of the local region. 如申請專利範圍第1項所述的光源模組的製作方法,其中該光強度分佈與該預設光強度分佈中的光強度為輝度。 The method of fabricating a light source module according to claim 1, wherein the light intensity distribution and the light intensity in the predetermined light intensity distribution are luminance. 一種光源模組,包括:一導光板,具有多個均勻分佈的光擴散微單元,且具有一第一表面、一相對於該第一表面的第二表面及一連接該第一表面與 該第二表面的入光面;一發光單元,配置於該入光面旁,且朝向該入光面發出一光束;一反射片,配置於該第二表面上,且具有朝向該第二表面的一反射面;以及多個光學結構,以非均勻的方式配置於該反射面上。 A light source module includes: a light guide plate having a plurality of uniformly distributed light diffusing micro-cells, and having a first surface, a second surface opposite to the first surface, and a first surface coupled to the first surface a light incident surface of the second surface; a light emitting unit disposed adjacent to the light incident surface and emitting a light beam toward the light incident surface; a reflective sheet disposed on the second surface and having a second surface facing the second surface a reflective surface; and a plurality of optical structures disposed on the reflective surface in a non-uniform manner. 如申請專利範圍第12項所述的光源模組,其中該些光學結構包括多個光擴散網點、多個光吸收網點或其組合。 The light source module of claim 12, wherein the optical structures comprise a plurality of light diffusion dots, a plurality of light absorption dots, or a combination thereof. 如申請專利範圍第12項所述的光源模組,其中該些光擴散微單元為配置於該導光板內部的多個均勻分佈的光擴散粒子。 The light source module of claim 12, wherein the light diffusing micro-units are a plurality of uniformly distributed light diffusing particles disposed inside the light guiding plate. 如申請專利範圍第12項所述的光源模組,其中該些光擴散微單元為配置於該第一表面與該第二表面的至少其中之一上的多個表面光學微結構。 The light source module of claim 12, wherein the light diffusing micro-units are a plurality of surface optical microstructures disposed on at least one of the first surface and the second surface. 如申請專利範圍第12項所述的光源模組,其中該些光學結構設置於該反射面之靠近該入光面的區域或遠離該入光面的區域。 The light source module of claim 12, wherein the optical structures are disposed on a region of the reflective surface adjacent to the light incident surface or a region away from the light incident surface. 如申請專利範圍第12項所述的光源模組,其中該些光學結構設置於該反射面上的局部區域,以抑制該導光板於對應於該局部區域處光強度過強的現象。 The light source module of claim 12, wherein the optical structures are disposed on a partial area of the reflective surface to suppress a phenomenon that the light guide plate is too strong in intensity corresponding to the local area. 如申請專利範圍第17項所述的光源模組,其中該光強度為輝度。 The light source module of claim 17, wherein the light intensity is luminance. 如申請專利範圍第12項所述的光源模組,其中該些光學結構設置於該反射面上的局部區域,以彌補該導光板於對應於該局部區域處光強度過低的現象。 The light source module of claim 12, wherein the optical structures are disposed on a partial area of the reflective surface to compensate for a phenomenon in which the light intensity of the light guide plate is too low corresponding to the local area. 如申請專利範圍第12項所述的光源模組,其中該些光學結構是以六角排列的方式排列於該反射面上。 The light source module of claim 12, wherein the optical structures are arranged on the reflective surface in a hexagonal arrangement. 如申請專利範圍第12項所述的光源模組,其中該些光學結構包括固化後的白色油墨、固化後的黑色油墨、固化後的透明油墨或其組合。 The light source module of claim 12, wherein the optical structures comprise a cured white ink, a cured black ink, a cured transparent ink, or a combination thereof. 如申請專利範圍第12項所述的光源模組,其中每一該光學結構呈圓點狀。 The light source module of claim 12, wherein each of the optical structures is in the form of a dot.
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