TW201102713A - Backlight module and electronic device - Google Patents

Backlight module and electronic device Download PDF

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Publication number
TW201102713A
TW201102713A TW98122329A TW98122329A TW201102713A TW 201102713 A TW201102713 A TW 201102713A TW 98122329 A TW98122329 A TW 98122329A TW 98122329 A TW98122329 A TW 98122329A TW 201102713 A TW201102713 A TW 201102713A
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TW
Taiwan
Prior art keywords
reflective
light
backlight module
light source
disposed
Prior art date
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TW98122329A
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Chinese (zh)
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TWI390303B (en
Inventor
Wei-Jung Chan
Chia-Feng Teng
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Hannstar Display Corp
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Application filed by Hannstar Display Corp filed Critical Hannstar Display Corp
Priority to TW98122329A priority Critical patent/TWI390303B/en
Publication of TW201102713A publication Critical patent/TW201102713A/en
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Publication of TWI390303B publication Critical patent/TWI390303B/en

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Abstract

The invention provides a backlight module comprising a reflective housing, a light emitting diode, and a reflective plate. The reflective housing is disposed at one side of the backlight module and has a reflective curved surface thereon. The light emitting diode is disposed on the focus point of the reflective curved surface, and the light emitting surface of the light emitting diode faces the reflective curved surface. The light emitted by the light emitting surface of the light emitting surface could be reflected by the reflective curved surface to form a parallel light source. The reflective plate can reflect the parallel light source to make the parallel light source toward a lighting surface corresponding to the bottom surface of the backlight module where the reflective plate is located.

Description

201102713 六、發明說明: 【發明所屬之技術領域】 本發明係關於一種背光模組及應用此背光模組之電子 裝置,並且特別地,本發明係關於一種不需導光板之側向 式背光模組以及應用此背光模組之電子裳置。 【先前技術】 液晶顯示螢幕是一種主流的平面顯示器,其顯示原理 係由位於液晶面板後方之背光模組提供光源穿透液晶,並 且藉由液晶分子的角度變化’來呈現晝面中不同的灰階 值。此外,-些發光電子裝置亦可能用到背光模組作為其 光源,舉例而言,發光鍵盤的内部也可使用背光模組。基 於上述用途,背光模組所提供之光源是否均勻即成為各方 研究的重點。 於先前技術中’背光模組大略可分成直下式背光模組 以及側光式背光模組。請參閱圖一 A以及圖一 B,圖一 A 係繪不先前技術之直下式背光模組丨的示意圖,圖一 B 則繪不先前技術之侧光式背光模組2的示意圖。如圖一 A 所示,直下式背光模組丨包含之發光元件1〇所發出之光 線^接牙透透光單元T1或被反射元件π反射進而穿透 透光單元τι ’致使位於反射元件12相對側之使用者可觀 察到光源。此外,如圖一 B所示,侧光式背光模組2之 側面的發光it件2G所發出之光線人射導光板24。導光板 24可將光線導向透光單元T2,或是經反射元件 22以進 201102713 乂將光線反射至透光單元T2。目此,位於反射元件η 相對側之使用者可觀_絲。此外,側光式背光模組2 還具有遮罩26啼止光源自背賴組侧面漏出。 為了使光線能均勻分佈於上述透光單元,讓使用者不 會觀察到_的亮度不均,直下式背光池需具備多個均 勻分散之發光元件’㈣式背錢_需設置導光板以提 供均勻絲。近年來背光模_趨勢是不斷賴燈管數量 以及降低背光模組厚度關於電子裝置以及背光模組的薄 型化。由於直下式背賴組之多燈管設計需要較多數量的 燈管以及較大的混光距離,此種背賴組之設計不利於薄 型化的目的。針對側光式背光模組而言,雖然其所需之發 光元件數量較直下式背光模組之數量少,然而導 成本使得織式背紐域本難以降低。因絲能省略^ 光式背光模組之導光板,即可同時解決薄型化以及成本之 問題。 【發明内容】 本發明之一範疇在於提供一種可省略導光板之側光式 背光模組’以解決先前技術之問題。 根據一具體實施例,本發明之背光模組包含第一反射 罩、第-發光二極體以及第-反射片。第—反射罩係設置 於背光模組之一侧,並且其上具有第一反射曲面。第一發 光二極體係設置於第一反射曲面之焦點上,第一發光二極 體之光線發射面可面向第一反射曲面。第一反射面係設置 於背光模組之底面。 11 201102713 於本具體實施例中,第一發光二極體之光線發射 發射之光線可被第-反射曲面反射而形騎行光源朝 =第-反射片,第-反射片則可反射平行光源朝向相對 於底面之發光面。 本發明之另一範疇在於提供一種電子裝置,其背光模 組可省略導光板,因此可解決先前技術之問題。八 、 、根據一具體實施例,本發明之電子裝置包含透光單元 組’其中,背光模組鄰接透光單元。背光模: 匕3第一反射罩、第一發光二極體以及第一反射片。 一反射罩係設置於背光馳之—側,並且其上具有第一反 射曲面。第—發光二極體係設置於第—反射曲面之隹點 ^ ’第-發光二極體之糾發射面可面向第—反射曲面‘、、。 此外,第一反射面係設置於背光模組之底面。 於本具體實施例中,第—發光二極體之光線發射面所 it光線可被第—反㈣面反射㈣成平行光源朝向底 反㈣’第-反射片則可簡平行光源朝向透光 早70並進一步穿透透光單元。 關於本發明之優點與精神可以藉由以下的發明詳 斤附圖式得到進一步的瞭解。 【實施方式】 ^參關二’ @|二係繪示根據本發明之—具體實施例 =裝置3的示意圖。如圖二所示,電子裝置3可包含 先早元30以及背光模組32,其中,背光模組&鄰接 201102713 透光單元30。於實務中,電子裝置3可為液晶顯示器, 透光單元30則可為液晶面板,然而本發明並不以此為 限。 於本具體實施例中,背光模組32包含第一反射罩 320、第一發光二極體322以及第一反射片324。第一反 射罩320係設置於背光模組32之一侧,並且其上設置第 一反射曲面3200。請注意,本具體實施例之第一反射罩 320與第一反射曲面3200的形狀大體上相同,然而於實 務中,第一反射罩320與第一反射曲面32〇〇並不限定於 相同形狀。 第一反射曲面3200係具有一焦點之曲面,並且第— 發光二極體322可設置於此焦點上。第一發光二極體功 可具有出光口,亦即,第一光線發射面322〇,以朝特定 方向發光。於本具體實施例中,第一光線發射面%BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight module and an electronic device using the same, and in particular, the present invention relates to a lateral backlight module that does not require a light guide plate. The group and the electronic skirt applying the backlight module. [Prior Art] The liquid crystal display screen is a mainstream flat panel display. The display principle is that the backlight module located behind the liquid crystal panel provides a light source to penetrate the liquid crystal, and the liquid crystal molecules change angles to present different grays in the surface. Order value. In addition, some illuminating electronic devices may also use a backlight module as a light source. For example, a backlight module may also be used inside the illuminating keyboard. Based on the above applications, whether the light source provided by the backlight module is uniform or not has become the focus of research. In the prior art, the backlight module can be roughly divided into a direct type backlight module and an edge type backlight module. Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic diagram of a direct-lit backlight module 不 without prior art, and FIG. 1B is a schematic diagram of an edge-lit backlight module 2 of the prior art. As shown in FIG. 1A, the light emitted by the light-emitting element 1〇 of the direct-lit backlight module 接 is connected to the transmissive transparent unit T1 or reflected by the reflective element π and penetrates the transparent unit τι′ to be located at the reflective element 12 The light source can be observed by the user on the opposite side. In addition, as shown in FIG. 1B, the light emitted from the side member 2G of the side-lit backlight module 2 emits light to the light guide plate 24. The light guide plate 24 can guide the light to the light transmitting unit T2 or reflect the light to the light transmitting unit T2 via the reflecting element 22 to enter 201102713. For this reason, the user on the opposite side of the reflective element η is observable. In addition, the edge-lit backlight module 2 further has a mask 26 for stopping the light source from leaking from the side of the backing group. In order to make the light evenly distributed in the light-transmitting unit, the user does not observe the brightness unevenness of the _, the direct-type backlight pool needs to have a plurality of uniformly dispersed light-emitting elements '(4) type money _ need to set the light guide plate to provide Evenly silk. In recent years, the trend of backlights has been to reduce the number of lamps and reduce the thickness of the backlight module with respect to the thinning of electronic devices and backlight modules. Since the multi-lamp design of the direct-down type requires a large number of lamps and a large mixing distance, the design of such a group is not conducive to the purpose of thinning. For the edge-lit backlight module, although the number of light-emitting components required is smaller than that of the direct-lit backlight module, the cost of the guide back is difficult to reduce. Since the wire can omit the light guide plate of the light backlight module, the problem of thinning and cost can be solved at the same time. SUMMARY OF THE INVENTION One aspect of the present invention is to provide an edge-lit backlight module ′ that can omit a light guide plate to solve the problems of the prior art. According to a specific embodiment, the backlight module of the present invention comprises a first reflector, a first-light emitting diode, and a first-reflecting sheet. The first reflector is disposed on one side of the backlight module and has a first reflective curved surface thereon. The first light emitting diode system is disposed at a focus of the first reflective curved surface, and the light emitting surface of the first light emitting diode may face the first reflective curved surface. The first reflective surface is disposed on the bottom surface of the backlight module. 11 201102713 In this embodiment, the light emitted by the light emitted by the first light-emitting diode can be reflected by the first-reflecting curved surface to form a riding light source toward the first-reflecting sheet, and the first-reflecting sheet can reflect the parallel light source toward the opposite direction. The light emitting surface on the bottom surface. Another aspect of the present invention is to provide an electronic device in which a backlight module can omit a light guide plate, thereby solving the problems of the prior art. 8. According to a specific embodiment, the electronic device of the present invention comprises a light transmissive unit group, wherein the backlight module is adjacent to the light transmissive unit. Backlight mode: 匕3 first reflector, first light emitting diode and first reflective sheet. A reflector is disposed on the side of the backlight and has a first reflective curved surface thereon. The first-light-emitting diode system is disposed at the 第 point of the first-reflecting curved surface ^ ′ The illuminating surface of the first-light-emitting diode can face the first-reflecting curved surface ‘,. In addition, the first reflective surface is disposed on the bottom surface of the backlight module. In the specific embodiment, the light emitting surface of the first light emitting diode can be reflected by the first-inverse (four) plane (four) into parallel light source toward the bottom (four) 'the first reflective sheet can be parallel to the light source toward the light transmission 70 and further penetrate the light transmitting unit. The advantages and spirit of the present invention can be further understood by the following detailed description of the invention. [Embodiment] FIG. 2 is a schematic view of a device 3 according to the present invention. As shown in FIG. 2, the electronic device 3 can include a first element 30 and a backlight module 32, wherein the backlight module & is adjacent to the 201102713 light transmitting unit 30. In practice, the electronic device 3 can be a liquid crystal display, and the light transmitting unit 30 can be a liquid crystal panel, but the invention is not limited thereto. In the embodiment, the backlight module 32 includes a first reflector 320, a first LED 322, and a first reflector 324. The first reflective cover 320 is disposed on one side of the backlight module 32, and a first reflective curved surface 3200 is disposed thereon. It should be noted that the first reflective cover 320 of the present embodiment has substantially the same shape as the first reflective curved surface 3200. However, in practice, the first reflective cover 320 and the first reflective curved surface 32 are not limited to the same shape. The first reflective curved surface 3200 has a curved surface of focus, and the first light emitting diode 322 can be disposed at this focus. The first light-emitting diode function may have a light exit opening, that is, the first light-emitting surface 322〇 to emit light in a specific direction. In the specific embodiment, the first light emitting surface%

一反射曲面3200 ’因此第一發光二極體所發出之 光線會朝向第一反射曲面3200行進。 32〇〇m …以你設置於第—反射曲 〇之焦點上’因此其發出之光線被第—反射 反射後可形成平行光源於背光模組32中行進。第 3片0 ^^置㈣光模組%之底面並相對於透光單 30,當平行光源入射至第一反射片324 =. =4可反射平行光源並將其導向透光單元如。 心 可於透光單元30之另-側觀察到光源。 為了讓光源能夠均句地分佛於透光單 元30 的各角 201102713 洛’本具體實施例之第—反射片324其接近第一反射罩 32〇之姆父遠離透光單元,並且第一反射片似其遠 離第反射罩320之-侧較靠近透光單元3〇,其相對位 置如^二所$。藉纽麵斜設計,可解決分佈不均 之問題,而讓使用者觀察到均勻的亮度。 /綜上所述,本發明之背光模組可利用側向光源方式提 供平均的光源亮度給電子裝置,並且可省略導光板的設 計,進而大幅降低背光模組的生產成本。 此外,於本具體實施例中,第一反射片324上可進一 步設置反射結構3240以幫助反射平行光源並將其導向透 光單元30。請注意,反射結構3240之形狀及構造於實務 中可根據使用者或設計者需求而定,並不受限於本發明所 列舉之具體實施例。反射結構3240之數量會影響反射至 透光單元30之光源亮度,舉例而言,反射結構3240密度 高(亦即,單位面積内數量較多)的區域所反射出之光源會 較反射結構3240密度低的區域所反射出之光源之亮度為 高。因此,第一反射片324上遠離發光源之區域可設置較 多的反射結構3240並且第一反射片324上接近發光源之 區域可設置較少的反射結構3240以平均光源分佈,進而 讓使用者觀察到均勻的亮度。於實務中,反射結構3240 可利用沖壓或是射出成形的方式製作而成,然而本發明並 不以此為限。 於本具體實施例中,第一反射片324係呈平面狀並傾 斜設置於背光模組32之底面’然而第一反射片324之形 201102713 狀以及配置可根據使用者或設計者需求而定。舉例而言’ 請參閱圖三,圖二係綠示根據本發明之另一具體實施例之 電子裝置4的示意圖。 如圖三所不,電子裝置4包含透光單元4〇以及背光 模組42,其中,旁光模組42鄰接透光單元4〇。同樣地, 背光模組42包含第一反射罩420、第一發光二極體422 以及第一反射片424。 本具體實施例與上一具體實施例不同處,在於本具體 實施例之第一反射片424係呈曲面狀,並且其遠離第一反 射罩420之一側(於此可以第二側代表)比其接近第一反射 罩420之一側(於此可以第一側代表)還靠近透光單元4〇, 因此可進一步平均透光單元40之光源亮度。請注意,本 具體實施例之其他單元係與上述具體實施例之功能大體上 相同,故於此不再贅述。此外,本具體實施例之第一反射 片424之曲率於實務中可根據使用者或設計者需求而定, 並不受限於本發明所列舉之具體實施例。 同樣地,本具體實施例之第一反射片424上可設置反 射結構4240 ’此外,第一反射片424之遠離發光源之區 域可設置較多的反射結構4240並且第一反射片424之接 近發光源之區域可設置較少的反射結構4240以平均光源 亮度分佈。 於實務中’上述具體實施例之背光模組可包含至少一 組以上之反射罩、發光二極體以及反射片,使其提供至較 大型電子裝置(例如,大尺寸液晶平面顯示器)之光源具有 9 201102713 較平均亮度。舉例而言,請參閱圖四,圖四係繪示根據本 發明之另一具體實施例之電子裝置5的示意圖。如圖四所 不,電子裝置5包含透光單元5〇以及背光模組52,其 中’方光模組52鄰近透光單元5〇。 於本具體實施例中’背光模組52包含第一反射罩 520、第一發光二極體522、第一反射片524、第二反射罩 526、第二發光二極體528以及第二反射片530。第一反 射罩520係設置於背光模組52之一侧,其具有第一反射 曲面5200,並且第一發光二極體522設置於第一反射曲 面5200之焦點上。此外,第—發光二極體522之第一光 線發射面5220可面向第—反射曲面52〇〇。第一反射片 524係設置於背光模組52之底面,並且第一反射片524 之遠離第一反射罩520之一側比第一反射片524之接近第 一反射罩520之一侧還靠近透光單元5〇。第一反射罩 520、第厂發光二極體522以及第一反射片524提供光源 至透光單兀50之流程係與上述具體實施例大體上相同, 故於此不再贅述。 此外,第二反射罩526、第二發光二極體528以及第 二反射片530係與上述第一反射罩52〇、第一發光二極體 522以及第一反射片524呈相對配置。亦即,第二反射罩 526係設置相對於第一反射罩52〇在背光模組52之另一 侧。第二反射罩526具有第二反射曲面526〇,並且第二 發光二極體528係設置於第二反射曲面526〇之焦點上。 第二發光二極體528之第二光線發射面528〇面向第二反 射曲面5260。第二反射片53〇係設置於背光模組52之底 201102713 面,並且第二反射片530之遠離第二反射罩526之一側比 第二反射片530之接近第二反射罩526之一側還靠近透光 單元50。 於本具體實施例中’第二反射罩526、第二發光二極 體528以及第二反射片530提供光源之流程係與第一反射 罩520、第一發光二極體522以及第一反射片524提供光 源之流程大體上相同,僅其光線行進的方向有差異,故於 此不再贅述。 综上所述,本具體實施例之背光模組可包含至少一組 反射罩、發光二極體以及反射片以提供大型電子裝置如大 尺寸液晶顯示器之均勻光源,並且於實務中,反射罩、發 光二極體以及反射片之數量並不限於本說明書所列舉之具 體實施例,端看使用者或設計者需求而定。 於另一具體實施例中,第一反射片524以及第二反射 片530上亦可設置反射結構以辅助反射平行光源至透光單 兀50。同樣地,第一反射片524上遠離第一反射罩52〇 之區域以及第二反射片530上遠離第二反射罩526之區域 可設置較乡的反雜構以平均光源亮度分佈。 相較於先前技術,本發明之背光模組係利用發光二極 體配合反轉喊生平行域,接著再藉由反射片將平行 光源反射至特定的發光面上。反射片可呈傾斜設置以使背 光模組提供均自絲。㈣本發明之#光模組係以側光式 光源並配合反射罩以提供平行絲,故可省略導光板的設 置。因此’本發明之背光模組兼具使用較少的發光元件以 201102713 之目 =省略導社的特點’進而浙_細及降低成本 藉由以上較佳具體實施例之詳述,係 特徵與精神,而並非以上述所揭露^較:且 施例來對本發明之範轉加以限制。相反地,1目的^ 變及具相等性的安排於本發明;欲申請 之專利辄__内。因此,本發明所ψ請之 乾疇應錄據上it的_作最寬 所有可能⑽變叹具购性的安排。敎其涵盍A reflective curved surface 3200' thus the light emitted by the first light emitting diode travels toward the first reflective curved surface 3200. 32〇〇m ... is set at the focus of the first reflection curve ’ so that the emitted light is reflected by the first reflection to form a parallel light source to travel in the backlight module 32. The third piece of 0^^ sets (4) the bottom surface of the optical module % and is opposite to the light transmitting unit 30. When the parallel light source is incident on the first reflecting sheet 324 =. = 4, the parallel light source can be reflected and guided to the light transmitting unit. The light source can be observed on the other side of the light transmitting unit 30. In order to allow the light source to be uniformly divided into the corners of the light transmitting unit 30 201102713, the first embodiment of the reflective sheet 324 is close to the first reflecting cover 32, and the first reflecting is away from the light transmitting unit, and the first reflection The sheet is like the side away from the reflective cover 320 and is closer to the light transmitting unit 3'', and its relative position is as good as $2. By using the diagonal design, the problem of uneven distribution can be solved, and the user can observe uniform brightness. In summary, the backlight module of the present invention can provide an average light source brightness to the electronic device by using a side light source, and can omit the design of the light guide plate, thereby greatly reducing the production cost of the backlight module. Moreover, in the present embodiment, the reflective structure 3240 can be further disposed on the first reflective sheet 324 to help reflect the parallel light source and direct it to the light transmissive unit 30. It should be noted that the shape and configuration of the reflective structure 3240 can be practiced according to the needs of the user or the designer and is not limited to the specific embodiments of the present invention. The amount of the reflective structure 3240 affects the brightness of the light source reflected to the light transmitting unit 30. For example, the light source reflected by the region of the reflective structure 3240 having a high density (that is, a large number of units per unit area) reflects the density of the reflective structure 3240. The brightness of the light source reflected by the low area is high. Therefore, a region of the first reflective sheet 324 away from the light source may be provided with more reflective structures 3240 and a region of the first reflective sheet 324 adjacent to the light source may be provided with fewer reflective structures 3240 to average the light source distribution, thereby allowing the user to Uniform brightness was observed. In practice, the reflective structure 3240 can be fabricated by stamping or injection molding, but the invention is not limited thereto. In the embodiment, the first reflective sheet 324 is planar and obliquely disposed on the bottom surface of the backlight module 32. However, the shape of the first reflective sheet 324 and the configuration may be determined according to the needs of the user or the designer. For example, please refer to FIG. 3, which is a schematic diagram showing an electronic device 4 according to another embodiment of the present invention. As shown in FIG. 3, the electronic device 4 includes a light transmitting unit 4A and a backlight module 42. The light emitting module 42 is adjacent to the light transmitting unit 4A. Similarly, the backlight module 42 includes a first reflector 420 , a first LED 422 , and a first reflector 424 . The difference between the specific embodiment and the previous embodiment is that the first reflective sheet 424 of the specific embodiment has a curved shape and is away from one side of the first reflective cover 420 (which may be represented by the second side). It is close to one side of the first reflecting cover 420 (here, which can be represented by the first side) and is also close to the light transmitting unit 4〇, so that the light source brightness of the light transmitting unit 40 can be further averaged. It should be noted that the other elements of the specific embodiment are substantially the same as those of the above specific embodiments, and thus will not be further described herein. In addition, the curvature of the first reflective sheet 424 of the present embodiment may be determined according to the needs of the user or the designer in practice, and is not limited to the specific embodiments of the present invention. Similarly, the first reflective sheet 424 of the present embodiment may be provided with a reflective structure 4240. In addition, a region of the first reflective sheet 424 away from the light source may be provided with more reflective structures 4240 and the first reflective sheet 424 is adjacent to the light. A region of the source may be provided with fewer reflective structures 4240 to average the light source luminance distribution. In practice, the backlight module of the above specific embodiment may include at least one set of reflectors, light-emitting diodes, and reflective sheets, such that the light source provided to a larger electronic device (eg, a large-sized liquid crystal flat panel display) has 9 201102713 More average brightness. For example, referring to FIG. 4, FIG. 4 is a schematic diagram of an electronic device 5 according to another embodiment of the present invention. As shown in FIG. 4, the electronic device 5 includes a light transmitting unit 5A and a backlight module 52, wherein the 'square light module 52 is adjacent to the light transmitting unit 5'. In the present embodiment, the backlight module 52 includes a first reflector 520, a first LED 522, a first reflector 524, a second reflector 526, a second LED 528, and a second reflector. 530. The first reflective cover 520 is disposed on one side of the backlight module 52, and has a first reflective curved surface 5200, and the first light emitting diode 522 is disposed on the focus of the first reflective curved surface 5200. Further, the first light emitting surface 5220 of the first light emitting diode 522 may face the first reflecting curved surface 52A. The first reflective sheet 524 is disposed on the bottom surface of the backlight module 52, and one side of the first reflective sheet 524 away from the first reflective cover 520 is closer to the side of the first reflective cover 520 than the first reflective cover 520. Light unit 5〇. The flow of the first reflector 520, the second LED 522 and the first reflector 524 to provide the light source to the light-transmissive unit 50 is substantially the same as that of the above embodiment, and thus will not be described again. Further, the second reflection cover 526, the second light-emitting diode 528, and the second reflection sheet 530 are disposed to face the first reflection cover 52A, the first light-emitting diode 522, and the first reflection sheet 524. That is, the second reflector 526 is disposed on the other side of the backlight module 52 with respect to the first reflector 52. The second reflective cover 526 has a second reflective curved surface 526A, and the second light emitting diode 528 is disposed at a focus of the second reflective curved surface 526A. The second light emitting surface 528'' of the second light emitting diode 528 faces the second reflective curved surface 5260. The second reflective sheet 53 is disposed on the bottom surface of the backlight module 52, 201102713, and the side of the second reflective sheet 530 away from the second reflective cover 526 is closer to the side of the second reflective cover 526 than the second reflective sheet 530. It is also close to the light transmitting unit 50. In the present embodiment, the second reflector 526, the second LED 528, and the second reflector 530 provide a light source flow system and the first reflector 520, the first LED 522, and the first reflector. The flow of providing light source 524 is substantially the same, and only the direction in which the light travels is different, so it will not be described here. In summary, the backlight module of this embodiment may include at least one set of reflectors, light-emitting diodes, and reflective sheets to provide a uniform light source for a large-scale electronic device such as a large-sized liquid crystal display, and in practice, a reflector, The number of light-emitting diodes and reflective sheets is not limited to the specific embodiments set forth in this specification, but depends on the needs of the user or designer. In another embodiment, a reflective structure may also be disposed on the first reflective sheet 524 and the second reflective sheet 530 to assist in reflecting the parallel light source to the light transmissive unit 50. Similarly, the area of the first reflection sheet 524 that is away from the first reflection cover 52A and the area of the second reflection sheet 530 that is away from the second reflection cover 526 can be set to have a different anti-hybrid structure to average the light source brightness distribution. Compared with the prior art, the backlight module of the present invention utilizes a light-emitting diode to cooperate with the reverse shunt parallel field, and then reflects the parallel light source to a specific light-emitting surface by the reflection sheet. The reflective sheet can be tilted so that the backlight module provides both self-winding. (4) The #光模块 of the present invention uses a side light source and a reflector to provide a parallel wire, so that the arrangement of the light guide plate can be omitted. Therefore, the backlight module of the present invention combines the use of fewer light-emitting elements with the purpose of 201102713 = omitting the characteristics of the guides, and further reduces the cost by the detailed description of the above preferred embodiments. It is not intended to limit the scope of the invention. On the contrary, the 1 objective and the equality are arranged in the present invention; the patent to be applied is __. Therefore, the scope of the request for the present invention should be recorded as the widest of all possible (10) sighs.敎其涵盍

12 201102713 【圖式簡單說明】 圖一 A係繪示先前技術之直下式背光模組的示意 圖。 圖一 B係繪示先前技術之側光式背光模組的示意 圖。12 201102713 [Simple description of the diagram] Figure 1A shows a schematic diagram of a prior art direct type backlight module. Figure 1B is a schematic view showing a prior art edge-lit backlight module.

圖二係繪示根據本發明之一具體實施例之電子裝置的 示意圖。 圖三係繪示根據本發明之另一具體實施例之電子裝置 的示意圖。 圖四係繪示根據本發明之另一具體實施例之電子裝置 的示意圖。 【主要元件符號說明】2 is a schematic diagram of an electronic device in accordance with an embodiment of the present invention. Figure 3 is a schematic diagram of an electronic device in accordance with another embodiment of the present invention. Figure 4 is a schematic diagram of an electronic device in accordance with another embodiment of the present invention. [Main component symbol description]

:直下式背光模組 2:側光式背光模組 10、20 :發光元件 Ή、T2 :透光單元 24 :導光板 12、22 :反射元件 26 :遮罩 3、4、5 :電子裝置 30、40、50 :透光單元 32、42、52 :背光模組 13 201102713 320、420、520 :第一反射罩 322、422、522 :第一發光二極體 324、424、524 :第一反射片 3200、4200、5200 :第一反射曲面 3220、4220、5220 :第一光線發射面 3240、4240 :反射結構 526 :第二反射罩 528 :第二發光二極體 530 :第二反射片 5260 :第二反射曲面 5280 :第二光線發射面: Direct-type backlight module 2: edge-lit backlight module 10, 20: light-emitting element Ή, T2: light-transmitting unit 24: light guide plate 12, 22: reflective element 26: mask 3, 4, 5: electronic device 30 40, 50: light transmitting unit 32, 42, 52: backlight module 13 201102713 320, 420, 520: first reflector 322, 422, 522: first light emitting diode 324, 424, 524: first reflection Sheet 3200, 4200, 5200: first reflective curved surface 3220, 4220, 5220: first light emitting surface 3240, 4240: reflective structure 526: second reflective cover 528: second light emitting diode 530: second reflective sheet 5260: Second reflective curved surface 5280: second light emitting surface

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Claims (1)

201102713 七、申請專利範圍: 1、 一種背光模組,包含: 一第一反射罩,設置於該背光模組之一侧,該第一反 射罩具有一第一反射曲面,並且該第一反射曲面具 有一第一焦點; —第一發光二極體,設置於該第一焦點上’該第一發 光二極體具有一第一光線發射面面向該第一反射曲 面;以及 一第一反射片,設置於該背光模組之一底面; 其中,該第一反射曲面反射該第一發光二極體之該第一 光線發射面所發出之光線以形成一第一平行光源,並且 該第一反射片反射該第一平行光源以將該第一平行光源 導向相對於該底面之一發光面。 2 、如申請專利範圍第1項所述之背光模組,其中該第一反射 片具有一第一側接近該第一反射罩以及一第二側遠離該 第反射罩,並且該第二側較該第一侧靠近該發光面。 3 、如申請專利範圍第2項所述之背光模組,其中該第一反射 片係平面狀。 4、 如申請專概圍帛2項所狀背光模組 片係曲面狀。 ’其中該第一反射 ^申請專概㈣1飾叙背光歡,其巾該第-反射 一至反射結構,該反射結構能反射該第 一平订光源以將該第—平行光源導向該發光面。 15 201102713 6、 如申請專利範圍第5項所述之背光模組,其中該反射結構 係透過沖遷方式形成於該第一反射片上。 7、 如申請專利範圍第5項所述之背光模組,其中該反射結構 係透過射出成形方式形成於該第一反射片上。 8、 如申請專利範圍第5項所述之背光模組,其中該第一反射 片具有一第一侧接近該第一反射罩以及一第二侧遠離該 第一反射罩,並且該反射結構分佈於該第二侧之密度大 於該反射結構分佈於該第一側之密度。 9、 如申請專利範圍第1項所述之背光模組,進一步包含: —第二反射罩,相對於該第一反射罩而設置,該第二 反射罩具有一第二反射曲面,並且該第二反射曲面 具有一第二焦點; 一第二發光二極體,設置於該第二焦點上,該第二發 光二極體具有一第二光線發射面面向該第二反射曲 面;以及 装第二反射片,設置於該背光模組之該底面; 其中’該第二反射曲面反射該第二發光二極體之該第二 光線發射面所發出之光線以形成一第二平行光源,並且 該第二反射片反射該第二平行光源以將該第二平行光源 導向相對於該底面之該發光面。 1〇、—種電子裝置,包含: 〜透光單元;以及 背光模組,鄰接該透光單元,該背光模組包含: 一第一反射罩,設置於該背光模組之一侧,該第一 201102713 反射罩具有一第一反射曲面,並且該第一反射曲 面具有一第一焦點; —第一發光二極體,設置於該第一焦點上,該第一 發光二極體具有一第一光線發射面面向該第—反 射曲面;以及 一第一反射片,設置於該背光模組之一底面; 其中,該第一反射曲面反射該第一發光二極體之該第一 光線發射面所發出之光線以形成一第一平行光源,並且 該第一反射片反射該第一平行光源以將該第一平行光源 導向該透光單元。 U、如申請專利範圍第10項所述之電子裝置,其中該第一反 射片具有一第一側接近該第一反射罩以及一第二側遠離 該第一反射罩,並且該第二側較該第一側靠近該透光單 12 、如申睛專利範圍第11項所述之電子裝置,其中該第一 射片係平面狀。 、如申睛專利範圍第11項所述之電子裝置,其中該第一 射片係曲面狀。 '、以 14、 如申請專利範圍第10項所述之電子裝置,复中該第一 、包含至少—反射結構,該反射結構=反射 平仃光源以將該第一平行光源導向該透光單元。 15、 如申請專利範圍第M項所述之電子襄置 構係透過沖壓方式形成於該第一反射片上。、“ ’ 17 201102713 16、 如申請專利範圍第μ項所述之電子裝置,其中該反射結 構係透過射出成形方式形成於該第一反射片上。 17、 如申請專利範圍第14項所述之電子裝置,其中第一反射 片具有一第一侧接近該第一反射罩以及一第二側遠離該 第一反射罩,並且該反射結構分佈於該第二側之密度大 於其分佈於該第一側之密度。 18、 如申请專利範圍第1〇項所述之電子裝置,進一步包含. 一第二反射罩,相對於該第一反射罩而設置,該第二 反射罩具有一第二反射曲面,並且該第二反射曲面 具有一第二焦點; 一第二發光二極體,設置於該第二焦點上,該第二發 光二極體具有一第二光線發射面面向該第二反射曲 面;以及 一第二反射片,設置於該背光模組之該底面; 其中,該第二反射曲面反射該第二發光二極體之該第二 光線發射面所發出之光線以形成一第二平行光源,並且 該第二反射片反射該第二平行光源以將該第二平行光源 導向該透光單元。201102713 VII. Patent application scope: 1. A backlight module, comprising: a first reflective cover disposed on one side of the backlight module, the first reflective cover having a first reflective curved surface, and the first reflective curved surface Having a first focus; a first light-emitting diode disposed on the first focus; the first light-emitting diode has a first light-emitting surface facing the first reflective surface; and a first reflective sheet, The first reflective surface reflects the light emitted by the first light emitting surface of the first light emitting diode to form a first parallel light source, and the first reflective sheet is disposed on a bottom surface of the backlight module. The first parallel light source is reflected to direct the first parallel light source to a light emitting surface relative to the bottom surface. 2. The backlight module of claim 1, wherein the first reflective sheet has a first side adjacent to the first reflective cover and a second side away from the first reflective cover, and the second side is The first side is adjacent to the light emitting surface. 3. The backlight module of claim 2, wherein the first reflective sheet is planar. 4. If you apply for a special encirclement of 2 backlight modules, the film is curved. The first reflection (application) (4) 1 embodies a backlight, the first reflection-to-reflection structure, and the reflective structure can reflect the first flat light source to guide the first parallel light source to the light-emitting surface. The backlight module of claim 5, wherein the reflective structure is formed on the first reflective sheet by a relocation method. 7. The backlight module of claim 5, wherein the reflective structure is formed on the first reflective sheet by injection molding. 8. The backlight module of claim 5, wherein the first reflective sheet has a first side adjacent to the first reflective cover and a second side away from the first reflective cover, and the reflective structure is distributed. The density on the second side is greater than the density at which the reflective structure is distributed on the first side. 9. The backlight module of claim 1, further comprising: a second reflector disposed opposite to the first reflector, the second reflector having a second reflective surface, and the The second reflective surface has a second focus; a second LED is disposed on the second focus, the second LED has a second light emitting surface facing the second reflective surface; and a second a reflective sheet disposed on the bottom surface of the backlight module; wherein the second reflective curved surface reflects light emitted by the second light emitting surface of the second light emitting diode to form a second parallel light source, and the first The two reflective sheets reflect the second parallel light source to direct the second parallel light source to the light emitting surface relative to the bottom surface. An electronic device comprising: a light transmissive unit; and a backlight module adjacent to the light transmissive unit, the backlight module comprising: a first reflective cover disposed on one side of the backlight module, the first a 201102713 reflector has a first reflective curved surface, and the first reflective curved surface has a first focus; a first light emitting diode disposed on the first focus, the first light emitting diode has a first a light-emitting surface facing the first-reflecting surface; and a first reflective sheet disposed on a bottom surface of the backlight module; wherein the first reflective curved surface reflects the first light-emitting surface of the first light-emitting diode The emitted light forms a first parallel light source, and the first reflective sheet reflects the first parallel light source to direct the first parallel light source to the light transmitting unit. The electronic device of claim 10, wherein the first reflective sheet has a first side adjacent to the first reflective cover and a second side away from the first reflective cover, and the second side is The first side is adjacent to the light-transmissive unit 12, such as the electronic device of claim 11, wherein the first film is planar. The electronic device of claim 11, wherein the first film is curved. The electronic device of claim 10, wherein the first, including at least a reflective structure, the reflective structure = reflective flat light source to direct the first parallel light source to the light transmitting unit . 15. The electronic device system of claim M, wherein the electronic device is formed on the first reflective sheet by stamping. The electronic device of claim 19, wherein the reflective structure is formed on the first reflective sheet by injection molding. 17. The electronic device according to claim 14 The device, wherein the first reflective sheet has a first side adjacent to the first reflective cover and a second side away from the first reflective cover, and the reflective structure is distributed on the second side to have a density greater than the first side thereof 18. The electronic device of claim 1, further comprising: a second reflector disposed opposite to the first reflector, the second reflector having a second reflective surface And the second reflective surface has a second focus; a second LED is disposed on the second focus, the second LED has a second light emitting surface facing the second reflective surface; a second reflective sheet disposed on the bottom surface of the backlight module; wherein the second reflective curved surface reflects the light emitted by the second light emitting surface of the second LED A second parallel light source is formed, and the second reflective sheet reflects the second parallel light source to direct the second parallel light source to the light transmissive unit.
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