M412378 五、新型說明： 【新型所屬之技術領域】 [0001] 本創作是關於一種背光模組，特別是關於一種改善 混光擴散光學效應，進而達到薄型化效果的背光模組。 【先前技術】 [0002] 近年來，傳統的陰極射線管顯示器（即俗稱的CRT顯M412378 V. New Description: [New Technology Field] [0001] This creation is about a backlight module, especially for a backlight module that improves the optical effect of light mixing and diffusion, thereby achieving a thinning effect. [Prior Art] [0002] In recent years, a conventional cathode ray tube display (known as CRT display)
示器）已漸漸地被液晶顯示器所取代，主要原因在於液 晶顯示器所釋放出的輻射量遠遠小於CRT顯示器，另外， 液晶顯示器在這幾年的製造成本已有顯著地降低，這也 是液晶顯示器逐漸成為電視或電腦螢幕市場之主流的原 因。 [0003] 液晶顯示器可區分為液晶面板及背光模組兩大部份The display device has gradually been replaced by a liquid crystal display. The main reason is that the amount of radiation emitted by the liquid crystal display is much smaller than that of the CRT display. In addition, the manufacturing cost of the liquid crystal display has been significantly reduced in recent years, which is also a liquid crystal display. It has gradually become the mainstream of the TV or computer screen market. [0003] A liquid crystal display can be divided into two parts: a liquid crystal panel and a backlight module.
，液晶面板用以顯示各種靜態、動態的影視或圖像，而 背光模組的目的即在於提供該液晶面板一背光源；如此 ，人們從該液晶顯示器的前方，即可以明亮、均勻的亮 度而看見該液晶面板所呈現的影視、圖像。請參照圖1， 圖1所繪示為習知的背光模組之示意圖。如圖1所示，一 背光模組8，其包括有多個燈源89、一擴散板88、一增亮 膜87及一背板單元86。該擴散板88包括有一入光面88B 及一出光面88A，該入光面88B與該出光面88A分別位於 該擴散板88的下表面與上表面。該些燈源89橫向併排而 設置於該擴散板88的下方，該增亮膜87位於該擴散板88 的上方。該背板單元86則設置於該些燈源89外側下方之 處，且用以容置該些燈源89。在此，該些燈源89為發光 二極體（Light Emitting Diode，LED)燈條。如此， 表單编號A0101 第3頁/共21頁 M412378 當多個燈源89所射出的光線朝上前進時，即可利用該擴 散板88達到混光、擴散的效果，再利用該增亮膜87達到 收斂、聚焦的功效。 [0004] 請再同時參閱圖2，圖2所繪示為習知的背光模組'的 光學擴散效果示意圖。為了使該背光模組8的擴散、混光 效果較佳，多個燈源89與該擴散板88應保持於一距離（p) ’使該擴散板88位於一充份混光區96。若該距離（P)過小 ，多個燈源8 9與該擴散板8 8的間距較小，則該擴散板8 8 便位於一未混光區97，則該背光模組8的整體光擴散度較 差，明暗相間的狀況嚴重，便無法達到該背光模組8的出 廠標準。因此，此一型式的背光模組8通常基於出光均勻 度的考量，會將該距離（P)保持於一定大小，避免降低該 背光模組8的等級，影響該背光模組的售價。 剛 請參閱圖3 ’圖3所綠示為另一習知的背光模組之示 意圖。如圖3所不，該背光模组8，#多個燈源89，係為 冷陰極螢光燈管（Cold Cathode Flu〇rescent Ump， CCFL)。然而，與前述圖丨、圖2相同的原理該冷陰 光燈管型式的燈源89,也有距離⑻無法過小的缺點。 [] 也就疋說，過大的距離（P)卻使該背光模組不易每 化’不符合液晶顯示器的功能設計需求。因此，如何_ 不降低該背光模組的出光均句度的前提下降低距 的大小，進而使該背光模組達到薄型化的目標，這是=) 領域具有通常知識者努力的目標。 未 【新型内容】 表單编號A0101 第4頁/共21頁 M412378 [0007] 本創作主要目的在不降低該背光模組的出光均勻度 的前提下，降低燈源與擴散板的距離（P)大小，進而使該 背光模組達到薄型化的目標。 [0008] 為了達成上述目的，本創作提供一種背光模組，其The liquid crystal panel is used to display various static and dynamic video or images, and the purpose of the backlight module is to provide a backlight of the liquid crystal panel; thus, people can have bright and uniform brightness from the front of the liquid crystal display. I saw the video and images presented by the LCD panel. Please refer to FIG. 1 , which is a schematic diagram of a conventional backlight module. As shown in FIG. 1, a backlight module 8 includes a plurality of light sources 89, a diffusion plate 88, a brightness enhancement film 87, and a back plate unit 86. The diffusing plate 88 includes a light incident surface 88B and a light exiting surface 88A. The light incident surface 88B and the light exiting surface 88A are respectively located on the lower surface and the upper surface of the diffusing plate 88. The light sources 89 are arranged side by side in the lateral direction of the diffuser plate 88, and the brightness enhancing film 87 is located above the diffuser plate 88. The backplane unit 86 is disposed below the outside of the light source 89 and is configured to receive the light sources 89. Here, the light sources 89 are Light Emitting Diode (LED) light strips. Thus, Form No. A0101 Page 3 of 21 M412378 When the light emitted by the plurality of light sources 89 is advanced upward, the diffusing plate 88 can be used to achieve the effect of mixing and diffusing, and the brightness enhancing film can be reused. 87 achieve convergence and focus. [0004] Please refer to FIG. 2 at the same time, and FIG. 2 is a schematic diagram showing the optical diffusion effect of a conventional backlight module. In order to optimize the diffusion and light mixing effect of the backlight module 8, the plurality of light sources 89 and the diffusion plate 88 should be maintained at a distance (p)' such that the diffusion plate 88 is located in a sufficient light mixing region 96. If the distance (P) is too small, the distance between the plurality of light sources 89 and the diffuser 8 8 is small, and the diffuser 8 8 is located in an unmixed region 97, the overall light diffusion of the backlight module 8 The degree is poor, and the situation between the light and the dark is serious, and the factory standard of the backlight module 8 cannot be achieved. Therefore, this type of backlight module 8 generally maintains the distance (P) to a certain size based on the consideration of uniformity of light emission, thereby avoiding lowering the level of the backlight module 8 and affecting the price of the backlight module. Referring now to Figure 3, the green color of Figure 3 is shown as another conventional backlight module. As shown in FIG. 3, the backlight module 8, # multiple light sources 89, is a Cold Cathode Fluorescent Ump (CCFL). However, the lamp source 89 of the cold cathode lamp type has the same principle as that of the above-mentioned Fig. 2 and Fig. 2, and has a disadvantage that the distance (8) cannot be too small. [] In other words, too large a distance (P) makes the backlight module difficult to change every 'does not meet the functional design requirements of the liquid crystal display. Therefore, how to reduce the size of the backlight module without reducing the uniformity of the light output of the backlight module, thereby achieving the goal of thinning the backlight module, which is the target of the general knowledge. No [New Content] Form No. A0101 Page 4 of 21 M412378 [0007] The main purpose of this creation is to reduce the distance between the light source and the diffuser without reducing the uniformity of the light output of the backlight module (P). The size, in turn, makes the backlight module thinner. In order to achieve the above object, the present invention provides a backlight module, which
包括有多個燈源、一擴散板、一增亮膜及一背板單元， 該擴散板包括有一入光面及一出光面，該入光面與該出 光面分別位於該擴散板的相對應兩面，該些燈源橫向併 排而設置於該擴散板的入光面側，該增亮膜位於該擴散 板的出光面側，該背板單元設置於該些燈源外側且用以 容置該些燈源，其特徵在於：該背光模組包括有至少一 混光擴散罩，該混光擴散罩設置於該燈源與該擴散板之 [0009] 如上所述的背光模組，其中，該燈源為發光二極體 (Light Emitting Diode，LED)燈條或冷陰極螢光燈 管（Cold Cathode Fluorescent Lamp ， CCFL) ° [0010] 如上所述的背光模組，其中，該些燈源規則且等間 距地排列。 [0011] 如上所述的背光模組，其中，該混光擴散罩内摻雜 有混光劑或多個擴散粒子。 [0012] 如上所述的背光模組，其中，該混光擴散罩更包括 有多個微結構，該些微結構設置於該混光擴散罩的内表 面或外表面，該微結構呈凸出式、凹入式或鋸齒式的構 型。 [0013] 如上所述的背光模組，其中，該混光擴散罩的數目 表單編號A0101 第5頁/共21頁 [0014]M412378 為多個，每一混光擴散罩均鄰設並包覆於一燈源周邊。 如上所述的背光模組，其中，該混光擴散罩更包括 有多個罩體，每一罩體均鄰設並包覆於一燈源周邊，該 罩體的截面呈半圓形、半橢圓形、三角形、四邊形或多 邊形。 [0015] 藉此，本創作的背光模組可以在不降低該背光模組 的混光效果與出光均勻度的前提下，降低燈源與擴散板 的距離（P)大小，進而使該背光模組達到薄型化的目標。 [0016] 為使熟悉該項技藝人士瞭解本創作之目的、特徵及 功效，茲藉由下述具體實施例，並配合所附之圖式，對 本創作詳加說明如後。 【實施方式】 [0017] 請參閱圖4，圖4所繪示為本創作第一實碓例之背光 模組示意圖。如圖4所示，一背光模組1，其包括有多個 燈源19、一擴散板18、一增亮膜17、一背板單元16及多 個混光擴散罩15。該擴散板18包括有一入光面18B及一出 光面18A，該入光面18B與該出光面18A分別位於該擴散 板18的上表面與下表面，亦即，該入光面18B與該出光面 18A分別位於該擴散板18的相對應兩面。該些燈源19呈橫 向併排且以規則、等間距的方式，設置於該擴散板18的 入光面18B側（即該擴散板18的下方）。該增亮膜17位於 該擴散板18的出光面18A侧（即該擴散板18的上方），該 背板單元16設置於該些燈源19外側（即該些燈源19的下方 )且用以容置該些燈源19。在本實施例中，該燈源19為發 表單編號A0101 第6頁/共21頁 光二極體（Light Emitting Diode，LED)燈條。該些 混光擴散罩15設置於該燈源19與該擴散板18之間，每一 混光擴散罩15的截面均呈半圓形或半橢圓形，且鄰設並 包覆於一燈源19周邊。在較佳實施例中，該混光擴散罩 15内係摻雜有混光劑或多個擴散粒子。藉此，如圖5所示 ，該燈源19朝上所射出的光線，在經過該混光擴散罩15 時，即可進行充份地混光、擴散。所以當該光線朝上方 離開該混光擴散罩15時，已經完全且充份地混光，故圖4 所示的背光模組1即可降低該擴散板18與該些燈源19的距 離（P)大小，進而使該背光模組1達到薄型化的目的。 [0018] 本創作當然還有其他實施例。請參閱圖6，圖6所繪 示為本創作第二實施例之背光模組示意圖。如圖6所示， 該背光模組2包括有多個燈源29、一擴散板28、一增亮膜 27、一背板單元26及多個混光擴散罩25。在此，相似的 結構便不再贅述。其中，本實施例的多個燈源29係為冷 陰極螢光燈管（Cold Cathode Fluorescent Lamp， CCFL)。該混光擴散罩25更包括有多個微結構251，該些 微結構251設置於該混光擴散罩25的内表面與外表面；外 表面的微結構251係呈鋸齒型式的構型，内表面的微結構 251係混合”凸出式”與”凹入式”的圓弧狀構型。該些 微結構2 51的設置目的係在於進一步地破壞光線的行進路 線，故可進一步地提昇混光的光學擴散效果。 請參閱圖7，圖7所繪示為本創作第三實施例之背光 模組示意圖。如圖7所示，該背光模組3包括有多個燈源 39、一擴散板38、一增亮膜37、一背板單元36及一混光 表單編號A0101 第7頁/共21頁 [0019] M412378 [0020] [0021] [0022] 擴散罩35。其中，本實施例的混光擴散罩35係由多個罩 體352所組成，每一罩體352均鄰設並包覆於一燈源39周 邊，且多個罩體352係以橫向等間距的規則排列方式而併 排相連。該罩體352的截面係呈三角形。 請參閱圖8，圖8所繪示為本創作第四實施例之背光 模組示意圖。如圖8所示，該背光模組4包括有多個燈源 49 ' 一擴散板48、一增亮膜47、一背板單元46及一混光 擴散罩45。其中，本實施例之混光擴散罩45的多個罩體 452係呈四邊形的輪廓構型。 請參閱圖9，圖9所繪示為本創作第五實施例之背光 模組示意圖。如圖9所示，該背光模組5包括有多個燈源 59、一擴散板58、一增亮膜57、一背板單元56及多個混 光擴散罩55。其中，本實施例的多個混光擴散罩55係呈 多邊形的輪廓構型，且每一混光擴散罩55均互不相接。 綜上所述，本創作的背光模組可以在不降低該背光 模組的混光效果與出光均勻度的前提下，降低燈源與擴 散板的距離（P)大小，進而使該背光模組達到薄型化的目 標。 [0023] 雖然本創作已以具體實施例揭露如上，然其所揭露 的具體實施例並非用以限定本創作，任何熟悉此技藝者 ，在不脫離本創作之精神和範圍内，當可作各種之更動 與潤飾，其所作之更動與潤飾皆屬於本創作之範疇，本 創作之保護範圍當視後附之申請專利範圍所界定者為準 表單编號A0101 第8頁/共21頁 M412378 [0024] [0025] [0026] [0027] [0028]The device includes a plurality of light sources, a diffusing plate, a brightness enhancing film, and a backing plate unit. The diffusing plate includes a light incident surface and a light emitting surface, and the light incident surface and the light emitting surface respectively correspond to the diffusing plate. On the two sides, the light sources are arranged side by side in the lateral direction of the diffusing surface of the diffusing plate, the brightness enhancing film is located on the light emitting surface side of the diffusing plate, and the backing plate unit is disposed outside the light source and is used for receiving the light source. The light source is characterized in that the backlight module includes at least one light diffusing diffuser, and the light diffusing diffuser is disposed on the light source and the diffusing plate. [0009] The backlight module as described above, wherein The light source is a Light Emitting Diode (LED) strip or a Cold Cathode Fluorescent Lamp (CCFL). [0010] The backlight module as described above, wherein the light source rules And arranged at equal intervals. [0011] The backlight module as described above, wherein the light mixing diffusion cover is doped with a light mixing agent or a plurality of diffusion particles. [0012] The backlight module as described above, wherein the light mixing diffusion cover further comprises a plurality of microstructures, the microstructures are disposed on an inner surface or an outer surface of the light mixing diffusion cover, and the microstructure is convex , concave or sawtooth configuration. [0013] The backlight module as described above, wherein the number of the mixed diffusing hood forms No. A0101, page 5/21 pages [0014] M412378 is plural, and each mixed diffusing hood is adjacent and covered Around a light source. The backlight module as described above, wherein the light-mixing diffusion cover further comprises a plurality of covers, each of the covers is adjacent and covered around a light source, and the cover has a semi-circular shape and a half Elliptical, triangular, quadrilateral or polygonal. [0015] Thereby, the backlight module of the present invention can reduce the distance (P) between the light source and the diffusion plate without reducing the light mixing effect and the uniformity of the light output of the backlight module, thereby further making the backlight mode The group achieved the goal of thinning. [0016] In order to familiarize the person skilled in the art with the purpose, features and functions of the present invention, the present invention will be described in detail by the following specific embodiments and with the accompanying drawings. [Embodiment] [0017] Please refer to FIG. 4, which is a schematic diagram of a backlight module according to a first embodiment of the present invention. As shown in FIG. 4, a backlight module 1 includes a plurality of light sources 19, a diffusion plate 18, a brightness enhancement film 17, a back plate unit 16, and a plurality of light mixing diffusion covers 15. The diffusing plate 18 includes a light incident surface 18B and a light emitting surface 18A. The light incident surface 18B and the light emitting surface 18A are respectively located on the upper surface and the lower surface of the diffusing surface 18, that is, the light incident surface 18B and the light emitting surface. Faces 18A are respectively located on opposite sides of the diffuser plate 18. The light sources 19 are arranged side by side and arranged in a regular, equidistant manner on the light incident surface 18B side of the diffuser plate 18 (i.e., below the diffuser plate 18). The brightness enhancing film 17 is located on the light emitting surface 18A side of the diffusing plate 18 (ie, above the diffusing plate 18). The backing plate unit 16 is disposed outside the light source 19 (ie, below the light source 19) and used. To accommodate the light sources 19. In the present embodiment, the light source 19 is a light-emitting diode (LED) light bar of the form number A0101, page 6 of 21 pages. The light diffusing diffuser 15 is disposed between the light source 19 and the diffusing plate 18, and each of the light diffusing diffusers 15 has a semicircular or semi-elliptical cross section, and is adjacent to and covered by a light source. 19 around. In a preferred embodiment, the light mixing diffuser 15 is doped with a light mixing agent or a plurality of diffusing particles. Thereby, as shown in Fig. 5, the light emitted from the light source 19 upward can be sufficiently mixed and diffused when passing through the light-mixing diffuser 15. Therefore, when the light exits the mixed diffusing cover 15 upwards, the light is completely and fully mixed, so that the backlight module 1 shown in FIG. 4 can reduce the distance between the diffusing plate 18 and the light sources 19 ( The size of P) further reduces the thickness of the backlight module 1. [0018] There are of course other embodiments of this creation. Please refer to FIG. 6. FIG. 6 is a schematic diagram of a backlight module according to a second embodiment of the present invention. As shown in FIG. 6, the backlight module 2 includes a plurality of light sources 29, a diffusion plate 28, a brightness enhancement film 27, a back plate unit 26, and a plurality of light mixing diffusion covers 25. Here, similar structures will not be described again. The plurality of light sources 29 of the present embodiment are Cold Cathode Fluorescent Lamps (CCFLs). The light diffusing diffuser 25 further includes a plurality of microstructures 251 disposed on the inner and outer surfaces of the light diffusing diffuser 25; the microstructure 251 of the outer surface is in a zigzag configuration, the inner surface The microstructure 251 is a circular "convex" and "recessed" arc configuration. The microstructures 2 51 are arranged to further destroy the traveling path of the light, so that the optical diffusion effect of the mixed light can be further enhanced. Please refer to FIG. 7. FIG. 7 is a schematic diagram of a backlight module according to a third embodiment of the present invention. As shown in FIG. 7 , the backlight module 3 includes a plurality of light sources 39 , a diffusion plate 38 , a brightness enhancement film 37 , a back plate unit 36 , and a mixed light form number A0101 page 7 / 21 pages [ M019378 [0022] [0022] Diffusion cover 35. The light-mixing diffuser 35 of the present embodiment is composed of a plurality of covers 352. Each of the covers 352 is adjacent to and wrapped around a light source 39, and the plurality of covers 352 are equally spaced laterally. The rules are arranged side by side. The cover 352 has a triangular cross section. Please refer to FIG. 8. FIG. 8 is a schematic diagram of a backlight module according to a fourth embodiment of the present invention. As shown in FIG. 8, the backlight module 4 includes a plurality of light sources 49', a diffusion plate 48, a brightness enhancement film 47, a back plate unit 46, and a light mixing diffusion cover 45. The plurality of covers 452 of the light-mixing diffusion cover 45 of the present embodiment have a quadrangular outline configuration. Please refer to FIG. 9. FIG. 9 is a schematic diagram of a backlight module according to a fifth embodiment of the present invention. As shown in FIG. 9, the backlight module 5 includes a plurality of light sources 59, a diffusing plate 58, a brightness enhancing film 57, a backing plate unit 56, and a plurality of light diffusing diffusers 55. The plurality of light diffusing diffusers 55 of the present embodiment have a polygonal contour configuration, and each of the light diffusing diffusers 55 are not in contact with each other. In summary, the backlight module of the present invention can reduce the distance (P) between the light source and the diffusion plate without reducing the light mixing effect and the uniformity of the light output of the backlight module, thereby enabling the backlight module. Achieve the goal of thinning. [0023] While the present invention has been described above with respect to the specific embodiments, the specific embodiments disclosed herein are not intended to limit the present invention, and any one skilled in the art can make various kinds without departing from the spirit and scope of the present invention. The changes and retouchings are all in the scope of this creation. The scope of protection of this creation is subject to the scope of the patent application attached as the form number A0101 Page 8 of 21 M412378 [0024 [0028] [0028] [0028]
[0029] [0030] [0031] [0032] [0033][0033] [0033] [0033]
[0034] [0035] [0036] [0037] [0038] [0039] 【圖式簡單說明】 圖1所繪示為習知的背光模組之示意圖。 圖2所繪示為習知的背光模組的光學擴散效果示意圖 〇 圖3所繪示為另一習知的背光模組之示意圖。 圖4所繪示為本創作第一實施例之背光模組示意圖。 圖5所繪示為本創作第一實施例之背光模組的光學擴 散效果示意圖。 圖6所繪示為本創作第二實施例之背光模組示意圖。 圖7所繪示為本創作第三實施例之背光模組示意圖。 圖8所繪示為本創作第四實施例之背光模組示意圖。 圖9所繪示為本創作第五實施例之背光模組示意圖。 【主要元件符號說明】 〈習知〉 8、8’ ：背光模組 86 :背板單元 87 :增亮膜 88 :擴散板 88A :出光面 88B :入光面 表單編號A0101 第9頁/共21頁 M412378 [0040] 89、89’ ：燈源 [0041] 9 6 ·充份混光區 [0042] 97 :未混光區 [0043] P :距離 [0044] 〈本創作〉 [0045] 1、2、3、4 ' 5 :背光模組 [0046] 15 ' 25 ' 35 ' 45、55 :混光擴散罩 [0047] 251 :微結構 [0048] 352、452 :罩體 [0049] 16、26、36、 46、56 :背板單元 [0050] 17、27 ' 37 ' 47、57 :增亮膜 [0051] 18 ' 28 ' 38 ' 48、58 :擴散板 [0052] 1 8A :出光面 [0053] 18B :入光面 [0054] 19、29 ' 39 ' 49、59 :燈源 [0055] P :距離 表單編號A0101 第10頁/共21頁BRIEF DESCRIPTION OF THE DRAWINGS [0039] FIG. 1 is a schematic diagram of a conventional backlight module. [0038] FIG. FIG. 2 is a schematic diagram of an optical diffusion effect of a conventional backlight module. FIG. 3 is a schematic diagram of another conventional backlight module. FIG. 4 is a schematic diagram of a backlight module according to a first embodiment of the present invention. FIG. 5 is a schematic diagram showing the optical diffusion effect of the backlight module of the first embodiment of the present invention. FIG. 6 is a schematic diagram of a backlight module according to a second embodiment of the present invention. FIG. 7 is a schematic diagram of a backlight module according to a third embodiment of the present invention. FIG. 8 is a schematic diagram of a backlight module according to a fourth embodiment of the present invention. FIG. 9 is a schematic diagram of a backlight module according to a fifth embodiment of the present invention. [Explanation of main component symbols] <Practical> 8, 8': Backlight module 86: Backplane unit 87: Brightening film 88: Diffuser 88A: Light-emitting surface 88B: Light-in surface form No. A0101 Page 9 of 21 Page M412378 [0040] 89, 89': light source [0041] 9 6 · full light mixing area [0042] 97: unmixed area [0043] P: distance [0044] <this creation> [0045] 2, 3, 4 ' 5 : backlight module [0046] 15 ' 25 ' 35 ' 45, 55 : mixed light diffusion cover [0047] 251 : microstructure [0048] 352, 452: cover [0049] 16, 26 , 36, 46, 56: Backplane unit [0050] 17, 27 ' 37 ' 47, 57: Brightening film [0051] 18 ' 28 ' 38 ' 48, 58: Diffuser [0052] 1 8A: Light-emitting surface [ 0053] 18B : Illumination surface [0054] 19, 29 ' 39 ' 49, 59 : Light source [0055] P : Distance form number A0101 Page 10 of 21