200815863 94497 18499twf.doc/t 九、發明說明： 【發明所屬之技術領域】 本發明疋有關於一種發光元件與顯示裝置，且特別是 有關於一種直下式背光模組與應用此直下式背光模組之液 . 晶顯示器。 • 【先前技術】 在一般液晶顯示器中，通常包含一色彩顯示功能之組 φ 件，例如是液晶顯示面板（Liquid crystal display panel)， 由於液晶顯示面板並不具有發光的功能，故在液晶顯示面 板下方必須配置一背光模組以提供一面光源，以使液晶顯 示面板能達到顯示的目的。 圖1疋習知背光模組之剖面示意圖。請參考圖1，習 知之背光模組100是由一燈箱110、多個光源120、一擴散 片130與一反射片ho所構成。其中，光源12〇配置於燈 相110内’而擴散片130配置於燈箱11〇之開口 處。 一般來說，反射片140都是直接配置於燈箱11()内之底面 肇 上’而光源120所提供之部分光線會直接由上方之擴散片 ’ I30而出射至外界，而部分射向燈箱110底面之光線會透 • 過反射片I40而反射，且最後由擴散片130而出射，這樣 便可以提升光線之利用率。 值得留意的是，由於反射片丨4〇直接放置於燈箱ho 内之底面上，因此背光模組100很可能因外力的碰撞而使 反射片140產生移位或由底面上脫落。這會對背光模組1〇〇 之可靠度以及其所呈現的光學特性造成嚴重的影響。 200815863 94497 18499twf.doc/t 此外’光源120通常都是點光源或線光源。這很容易 造成背光杈組100因光源12〇之數目或排列不當而使背光 模組100所呈現之亮度不均勻。上述之反射片14〇雖能提 升光線之利用率，但對於提升背光模組1〇〇所呈現亮度之 均勻性效果不佳。 【發明内容】 本發明之目的是提供_财下式背光模組，以解決習200815863 94497 18499twf.doc/t IX. Description of the Invention: [Technical Field] The present invention relates to a light-emitting element and a display device, and more particularly to a direct-lit backlight module and a direct-lit backlight module Liquid. Crystal display. • [Prior Art] In general liquid crystal displays, a group of color display functions is usually included, such as a liquid crystal display panel. Since the liquid crystal display panel does not have a function of emitting light, the liquid crystal display panel A backlight module must be disposed below to provide a light source for the liquid crystal display panel to achieve display purposes. FIG. 1 is a schematic cross-sectional view of a conventional backlight module. Referring to FIG. 1, the backlight module 100 is composed of a light box 110, a plurality of light sources 120, a diffusion sheet 130 and a reflection sheet ho. The light source 12A is disposed in the lamp phase 110, and the diffusion sheet 130 is disposed at the opening of the light box 11''. Generally, the reflection sheet 140 is disposed directly on the bottom surface of the light box 11 (), and part of the light provided by the light source 120 is directly emitted from the upper diffusion sheet 'I30 to the outside, and partially directed to the light box 110. The light from the bottom surface is reflected by the reflection sheet I40 and finally emitted by the diffusion sheet 130, so that the utilization of the light can be improved. It is worth noting that since the reflection sheet 4〇 is directly placed on the bottom surface of the light box ho, the backlight module 100 is likely to cause the reflection sheet 140 to be displaced or detached from the bottom surface due to the collision of an external force. This has a serious impact on the reliability of the backlight module 1 以及 and the optical characteristics it exhibits. 200815863 94497 18499twf.doc/t Furthermore, the light source 120 is typically a point source or a line source. This easily causes the backlight unit 100 to cause uneven brightness of the backlight module 100 due to the number or improper arrangement of the light sources 12〇. Although the above-mentioned reflective sheet 14 can improve the utilization of light, it is not effective for improving the uniformity of the brightness of the backlight module. SUMMARY OF THE INVENTION The object of the present invention is to provide a backlight module for solving
知之背光模組可靠度不佳與其所呈現之亮度不均勻等 題。 、、本發明之另一目的是提供一種液晶顯示器，其可應用 上述之直下式背光模組，以提供較佳的顯示品質與產品良 率。 上 於 斗為達上述或疋其他目的，本發明提出一種直下式背光 模組，其包括-燈箱、—光學膜片組、多個光源、—造 反射片與多_位件。其中，燈箱具有-開Π，而光學腺 片組配置於開口處。此外，光源配置於燈箱内，而造、 射片配置於域錢I自底部之間。此造型反則具有 伯反射斜面’且光源分別位於耐_的反射斜面之間。 述之疋位件配置於燈II底部，並分別承靠反射斜面相 光源的另一側，以定位反射斜面。 在本發明《-實施例中，上述之定位件可以是片狀。 在本發明之-貫施例中，上述之定位件與燈箱底 以為一體成型之結構。 _ 可 在本發明之一貫施例中，上述之定位件可以由燈箱底 6 200815863 94497 18499twf.doc/t 部沖壓成型而成。 在本發明之一實施例中 斜面。 在本發明之一實施例中 形或梯形。 上述之反射斜面可以為條狀 上述之條狀斜面可以構成山Knowing the poor reliability of the backlight module and the uneven brightness it presents. Another object of the present invention is to provide a liquid crystal display which can be applied to the above-described direct type backlight module to provide better display quality and product yield. In view of the above or other objects, the present invention provides a direct type backlight module comprising: a light box, an optical film set, a plurality of light sources, a reflective sheet and a plurality of _ bits. Wherein, the light box has an opening, and the optical gland group is disposed at the opening. In addition, the light source is disposed in the light box, and the film and the film are disposed between the bottom and the bottom. This shape has a primary reflection slope and the light source is located between the reflection slopes of the _ resistance. The clamp members are disposed at the bottom of the lamp II and respectively bear against the other side of the reflective bevel phase light source to position the reflective slope. In the embodiment of the present invention, the above positioning member may be in the form of a sheet. In the embodiment of the present invention, the positioning member and the bottom of the light box are integrally formed. _ In the consistent embodiment of the present invention, the above-mentioned positioning member can be stamped and formed from the bottom of the light box 6 200815863 94497 18499twf.doc/t. In one embodiment of the invention, the bevel is used. In one embodiment of the invention, it is shaped or trapezoidal. The above-mentioned reflective slope may be in the form of a strip. The above-mentioned strip-shaped slope may constitute a mountain.
在本發明之-實施例中，上述之直下式背光模組更包 括至少-定位銷，其配置於燈箱底#，並穿過造型反射片。 在本發明之-實施例中，上述之定位銷可以真有一第 疋位凸起以及-第二定位凸起，用以夾持造型反射片。 一在本發明之-實施例中，上述之定位銷包括一底座與 一套件。其中，底座配置於燈箱底部，且底座之頂部具有 凸柱牙過Xe型反射片。此外，套件套置於底座頂部的凸 柱上，而與底座共同夾持造型反射片。 在本發明之一貫施例中，上述之定位銷可以藉由螺絲 鎖附於燈箱底部。 在本發明之一實施例中，上述之光學膜片組可以包括 擴散片、增光片與稜鏡片至少其中之一。 在本發明之-實施例中♦上述之直下式背光模組更包 黏著膠帶，其配置於造型反射片與燈箱底部之間。 北。本务明提供一種液晶顯示面板，其包括上述之直下式 2拉組與-液晶顯示面板。其中，液晶顯示面板對應於 豆箱之開口而配置於直下式背光模組旁。 與“本發明提供一種直下式背光模組，包括一燈箱、一光 子膜片組、多個光源、一造型反射片與至少一定位銷。其 7 200815863 94497 18499twf.doc/t 中’燈箱具有—開口，而光學膜片組配置於開口處。此外， nr登箱内，而造型反射片配置於光源與燈箱底部 4上述之造鼓㈣具有複數個反射斜面，且光源分 =於兩ϋ鄰的反射斜面之間。另外，定位銷配置於燈箱 tr ίΓ造型反射片。此外，定位銷包括一底座與一 凸柱穿過造型反射片，而套件套置於底座了 並與底座共同夾持造型反射片。 在本發明之—實施射，上述之反射斜面可以為 斜面0 形或ΐΐ發明之—實施财，上叙練斜面可以構成山 林發明之-實施例中，上述之定位銷之側面可以具 射片弟疋位凸起以及一第二定位凸起，用以夾持造型反 在本發明之-實施例中，上述之定位銷可以藉由螺絲 鎖附於燈箱底部。 料ί本發明之一實施例中，上述之光學膜片組可以包括 擴政片、增光片與稜鏡片至少其中之一。 在本發明之-實施例中，找之直下式背光模組更包 括-黏者膠帶，其配置於造型反射片與燈箱底部之間。 t發明提供一種液晶顯示器，其包括上述僅有定位銷 而,、、、疋位件之直下式背域組與—液晶顯示面板。立中， 液晶顯示面板對應於燈箱之開口而配置於直下式背光模組 8 200815863 94497 18499twf.d〇c/t 旁0 ,本發明之直下式背光模組之底部與光源之間因有造 型反射片’且造型反射片有多個反射斜面。因此，造型反 射片能將射向燈箱底部之光線反射，而反射斜面能將光線 .均勻的散射’進而能提升直下式背光模組所提供光線之均 • 勻度。此外，造型反射片可以藉由定位件或定位銷至少其 中之一而穩固地定位於燈箱内，因此本發明之直下式背^ 籲模組具有良好的可靠度。本發明之背光模組亦能提供更為 肖勻的光線至液晶顯示面板，以提升液晶顯示器的顯示品 質。 、 一為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 、口 【實施方式】 第一實施 圖2疋依照本發明之第一實施例之一種直下式背光模 組剖面不意圖。請參考圖2 ;本發明之直下式背光模組2〇〇 包括一燈箱210、多個光源220、——光學膜片組23〇、一造 、 型反射片240與多個定位件21〇b。其中，燈箱21〇具有一 開口 210a，而光源220配置於燈箱210内，且光學膜片組 230配置於開口 210a處。 、、 一般而言，光學膜片組230可以包括擴散片（Diffuser film)、增光4 (Brightness enhanced film，BEF)與棱鏡 片（Prism sheet)至少其中之一，上述之擴散片可以使光 9 200815863 94497 18499twf.doc/t ' 源220所發出的光線更均勻地散射，而增光片可以提升直 下式背光模組200所呈現之亮度。此外，稜鏡片可以提升 光線出射方向之正確性。本發明之直下式背光模組2⑽可 以依據所欲呈現出之光學效果而選用上述之光學膜片。 ^ 由圖2可知，造型反射片240配置於光源220與燈箱 . 210底部之間。這裡要特別說明的是，造型反射片240上 具有複數個反射斜面240a，此立體的反射斜面240a可以 # 為條狀斜面。圖3是依照第一實施例之造型反射片示意 圖。請參考圖3，本發明造型反射片24〇之條狀斜面可以 構成山形或梯形，當然也可以是其他立體形狀，在並此不 加以侷限。 具體而言，上述之光源220分別位於兩相鄰立體的反 面240a之間。一般而言，光源22〇可以為冷陰極螢光 燈官（Cold cathode fluorescent lamp，CCFL)或是發光二 極體（LED)。若以冷陰極螢光燈管作為光源22〇，由於 冷陰極螢光燈管所發出之光線較無方向集中性，因此部分 朝向燈箱210底部所射出之光線會藉由造型反射片24〇反 •，射，而最後從上方之光學膜纽23〇出射，這樣便能提升 光、、泉之利用率。值得留意的是，反射斜面24〇a具有山形（梯 形或其他立體形狀）之條狀斜面。因此，位於兩相鄰的反 射斜面240a之間的光源22〇,其所發出之光線可以藉由反 射斜面240a而均勻地往侧向散射出去。 若以發光二極體作為光源22〇，則可以選用侧邊發光 型發光二極體（Side emitting type LED)作為光源220，由 10 200815863 94497 18499twf.doc/t 於侧邊發光型發光二極體所發出之光線大部分隼中於 向。因此，光源220所發 源220兩側立體的反射斜面施a而均勾地散射出去，進一 步提升本發明之直下式背光模組細之所提供光線之均勾 性0In the embodiment of the present invention, the direct type backlight module further includes at least a positioning pin disposed at the bottom of the light box and passing through the modeling reflection sheet. In an embodiment of the invention, the locating pin may have a first yoke protrusion and a second locating protrusion for holding the styling reflection sheet. In an embodiment of the invention, the locating pin described above includes a base and a kit. Wherein, the base is disposed at the bottom of the light box, and the top of the base has a convex column tooth passing through the Xe type reflection sheet. In addition, the kit is placed on the studs at the top of the base, and the shaped reflectors are held together with the base. In a consistent embodiment of the invention, the locating pin described above can be attached to the bottom of the light box by means of a screw. In an embodiment of the invention, the optical film set may include at least one of a diffusion sheet, a brightness enhancement sheet and a gusset sheet. In the embodiment of the present invention, the direct type backlight module described above further comprises an adhesive tape disposed between the modeling reflection sheet and the bottom of the light box. north. The present invention provides a liquid crystal display panel comprising the above-described direct type 2 pull group and liquid crystal display panel. The liquid crystal display panel is disposed adjacent to the opening of the direct-type backlight module corresponding to the opening of the bean box. And the present invention provides a direct type backlight module, comprising a light box, a photonic film group, a plurality of light sources, a modeling reflection sheet and at least one positioning pin. 7 200815863 94497 18499twf.doc/t the 'light box has — Opening, and the optical film group is disposed at the opening. In addition, nr is placed in the box, and the modeling reflection sheet is disposed at the bottom of the light source and the light box. The drum (4) has a plurality of reflecting slopes, and the light source is divided into two adjacent sides. In addition, the positioning pin is disposed on the light box to shape the reflection sheet. In addition, the positioning pin includes a base and a protrusion passing through the molding reflection sheet, and the sleeve is placed on the base and clamped to the shape reflection together with the base. In the embodiment of the present invention, the reflective bevel may be a beveled 0-shaped or invented--implementation, and the upper-slope bevel may constitute the invention of the mountain. In the embodiment, the side of the positioning pin may be irradiated. The pedestal ridge and the second locating protrusion are used for clamping the shape. In the embodiment of the present invention, the locating pin can be attached to the bottom of the light box by a screw lock. In one embodiment, the optical film set may include at least one of a magnifying film, a brightness enhancing film and a breeze. In the embodiment of the present invention, the direct type backlight module further includes an adhesive tape. The invention is disposed between the modeling reflection sheet and the bottom of the light box. The invention provides a liquid crystal display comprising the above-mentioned only positioning pin, and the direct-type back domain group of the clamping member and the liquid crystal display panel. The liquid crystal display panel is disposed on the direct type backlight module 8 corresponding to the opening of the light box. The backlight module 8 is connected to the bottom of the direct type backlight module of the present invention. The shape reflection sheet has a plurality of reflection slopes. Therefore, the shape reflection sheet can reflect the light that is directed to the bottom of the light box, and the reflection slope can uniformly scatter the light, thereby improving the light provided by the direct type backlight module. In addition, the modeling reflection sheet can be stably positioned in the light box by at least one of the positioning member or the positioning pin, so that the direct type back-action module of the invention has good reliability. The backlight module of the present invention can also provide more uniform light to the liquid crystal display panel to improve the display quality of the liquid crystal display. The above and other objects, features and advantages of the present invention are more apparent and easy to understand. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments are described in detail below with reference to the accompanying drawings. Ports [Embodiment] First Embodiment FIG. 2 is a cross-sectional view of a direct type backlight module according to a first embodiment of the present invention. Please refer to FIG. 2; the direct type backlight module 2 of the present invention comprises a light box 210, a plurality of light sources 220, an optical film group 23, a reflective sheet 240 and a plurality of positioning members 21 b. The light box 21A has an opening 210a, and the light source 220 is disposed in the light box 210, and the optical film set 230 is disposed at the opening 210a. In general, the optical film set 230 may include at least one of a diffuser film, a brightness enhanced film (BEF), and a prism sheet. The diffusing film can make the light 9 200815863 94497 18499twf.doc/t ' The light emitted by source 220 scatters more evenly, and the brightness enhances the brightness exhibited by direct-lit backlight module 200. In addition, the cymbal can improve the correct direction of light emission. The direct type backlight module 2 (10) of the present invention can select the above optical film according to the optical effect to be exhibited. ^ It can be seen from Fig. 2 that the modeling reflection sheet 240 is disposed between the light source 220 and the bottom of the light box 210. It should be particularly noted that the shape reflection sheet 240 has a plurality of reflection slopes 240a, and the three-dimensional reflection slopes 240a may be strip-shaped slopes. Fig. 3 is a schematic view of a molded reflection sheet according to the first embodiment. Referring to Fig. 3, the strip-shaped bevel of the molded reflection sheet 24 of the present invention may be formed into a mountain shape or a trapezoidal shape, and may of course be other three-dimensional shapes, and is not limited thereto. Specifically, the light sources 220 described above are respectively located between the opposite sides 240a of two adjacent solids. In general, the light source 22A can be a cold cathode fluorescent lamp (CCFL) or a light emitting diode (LED). If the cold cathode fluorescent lamp is used as the light source 22, since the light emitted by the cold cathode fluorescent lamp is less concentrated, the light emitted from the bottom toward the bottom of the light box 210 is reversed by the molding reflection sheet 24. , shot, and finally from the top of the optical film button 23, so that the utilization of light, spring can be improved. It is worth noting that the reflective bevel 24〇a has a strip-shaped bevel of a mountain shape (ladder or other three-dimensional shape). Therefore, the light source 22A located between the two adjacent reflecting slopes 240a can be uniformly laterally scattered by the reflecting slope 240a. If the light-emitting diode is used as the light source 22〇, a side-emitting type LED (Side emitting type LED) can be selected as the light source 220, and the side-emitting type light-emitting diode is provided by 10 200815863 94497 18499twf.doc/t. Most of the light emitted is in the middle. Therefore, the three-dimensional reflective slopes on both sides of the source 220 of the light source 220 are scattered and scattered, and the uniformity of the light provided by the direct-type backlight module of the present invention is further improved.
此外，上述之定位件21〇b配置於燈箱21〇底部，並 分別承靠住反射斜面240a背對光源220之一側。這樣一 來，定位件210b能將造型反射片24〇固定住，以避免造型 #反射片240移位，進而對整體直下式背光模組2〇〇所呈現 之光學特性造成影響。詳細地說，定位件21〇b可以是片狀 或是其他形狀，當然，定位件21〇b之外形端視造型反射片 240之外形而定，只要定位件21〇b能將造型反射片24〇定 位即可’在此並不對定位件21〇b之外形以及數目加以侷 限0 值得留意的是，定位件210b可以對應造型反射片240 之外形，並透過對燈箱210底部沖壓成型而成。換言之， 定位件210b與燈箱210底部可以為一體成型之結構。這樣 一來，不論何種立體形狀之造型反射片240都能被定位件 210b定位而固定於燈箱210之底部。為了進一步確保造型 反射片240能穩固的定位於燈箱2i0之底部，本發明之直 下式背光模組200更可以包括至少一定位銷250。此定位 銷250配置於燈箱210底部，並穿過造型反射片240，以 進一步固定住造型反射片240。 圖4是依照第一實施例之定位銷放大示意圖。請參考 200815863 94497 18499twf.doc/t 圖4’定位銷250包括一底座252與一套件254。其中，底 座252配置於燈箱210底部，且底座252之頂部具有一穿 過造型反射240之凸柱252a。此外，套件254套設於底 座252頂部的凸柱252a上，而與底座252共同夾持造型反 - 射片240。上述之底座252可以藉由螺絲256鎖附於燈箱 * 210底部或是透過卡合的方式固定於燈箱210底部。此外， 疋位鎖250可以具有一第一定位凸起252b以及一第二定位 • 凸起254a，透過增加定位銷250與造型反射片240之接觸 面積，進而使底座252與套件254能更穩固地夾持造型反, 射片240。 當然，本發明之直下式背光模組200更可以包括一黏 著膠帶260，其配置於造型反射片24〇與燈箱21〇底部之 間’以防止造型反射片24〇由燈箱210之底部脫落。如此 來，本發明之直下式背光模組200之可靠度便能大幅提 升。 ^二實施例 本實施例與第一實施例非常類似，兩者主要不同之處 在於·本實施例之直下式背光模組是以定位件來固定造型 _ 反射片而不使用定位銷。圖5是依照第二實施例之直下式 背光模組示意圖。請參考圖5，本發明之直下式背光模組 300包括一燈相21〇、多個光源220、一光學膜片組230與 一造型反射片240。其中，燈箱211具有一開口 211a，而 光源220配置於燈箱211内。 此外，光學膜片組230配置於開口 211a處，而造型 12 200815863 94497 18499twf.doc/t 反射片240配置於光源220與燈箱211底部之間。上述之 造型反射片240具有複數個反射斜面24〇a，且光源22〇分 別位於任兩相鄰的反射斜面24〇a之間。值得留意的是，^ 箱210之底部上形成有定位件21〇b，並分別承靠^住^ ^ 面24如背對光源220之一侧。這樣一來，定位件210b能 _ 將造型反射片240固定住，以避免造型反射片24〇移位^ 進而對整體直下式背光模組300所呈現之光學特性造成影 ⑩ 響。值得留意的是，定位件210b可以對應造型反射片24〇 之外形’並透過對燈箱210底部沖壓成型而成。換言之， 定位件210b與燈箱210底部可以為一體成型之結構°。這樣 一來，不論何種立體形狀之造型反射片24〇都能被定位件 210b準確且快速地定位於燈箱21〇之底部。 第三實施例 圖6是依照本發明之第三實施例之液晶顯示器之示意 圖。請參考圖6，本發明之液晶顯示器500包括上述之直 下式背光模組2〇0與一液晶顯示面板400。其中，直下式 月光模組200之結構已清楚揭露於第一實施例中，而液晶 顯示面板400對應於燈箱210之開口21(^而配置於直下式 、 背光模組200旁。 請參考圖7，本發明之液晶顯示面板4〇〇也可以搭配 直下式背光模組300而組成一液晶顯示器600。其中，背 光模組300之結構已清楚揭露於第二實施例中，而液晶顯 示面板400對應於燈箱211之開口 211a而配置於直下式背 光模組300旁。上述之液晶顯示器500與600都可以分別 13 200815863 94497 18499twf.doc/tFurther, the above-mentioned positioning members 21〇b are disposed at the bottom of the light box 21〇, and respectively bear against the side of the light source 220 opposite to the reflection slope 240a. In this way, the positioning member 210b can fix the molding reflection sheet 24〇 to avoid the displacement of the molding #reflecting sheet 240, thereby affecting the optical characteristics exhibited by the overall direct type backlight module 2〇〇. In detail, the positioning member 21〇b may be in the form of a sheet or other shapes. Of course, the outer shape of the positioning member 21〇b depends on the shape of the shape reflecting sheet 240, as long as the positioning member 21〇b can shape the reflecting sheet 24 〇 positioning can be 'here not limited to the shape and number of the positioning member 21〇b. It is worth noting that the positioning member 210b can be shaped corresponding to the shape of the reflective sheet 240 and formed by stamping the bottom of the light box 210. In other words, the positioning member 210b and the bottom of the light box 210 may be integrally formed. In this way, the shape reflection sheet 240 regardless of the three-dimensional shape can be positioned by the positioning member 210b and fixed to the bottom of the light box 210. In order to further ensure that the modeling reflection sheet 240 can be stably positioned at the bottom of the light box 2i0, the direct backlight module 200 of the present invention may further include at least one positioning pin 250. The positioning pin 250 is disposed at the bottom of the light box 210 and passes through the molding reflection sheet 240 to further fix the molding reflection sheet 240. Fig. 4 is an enlarged schematic view showing a positioning pin according to the first embodiment. Please refer to 200815863 94497 18499twf.doc/t. FIG. 4' locating pin 250 includes a base 252 and a sleeve 254. The bottom 252 is disposed at the bottom of the light box 210, and the top of the base 252 has a protrusion 252a passing through the modeling reflection 240. In addition, the sleeve 254 is sleeved on the stud 252a at the top of the base 252, and the styling anti-projection 240 is held together with the base 252. The base 252 can be attached to the bottom of the light box 210 by screws 256 or fixed to the bottom of the light box 210 by snapping. In addition, the clamp lock 250 can have a first positioning protrusion 252b and a second positioning protrusion 254a, which can increase the contact area between the positioning pin 250 and the modeling reflection sheet 240, thereby making the base 252 and the sleeve 254 more stable. The clamping shape is reversed, and the film 240 is produced. Of course, the direct type backlight module 200 of the present invention may further include an adhesive tape 260 disposed between the molding reflection sheet 24 and the bottom of the light box 21 to prevent the molding reflection sheet 24 from falling off the bottom of the light box 210. As a result, the reliability of the direct type backlight module 200 of the present invention can be greatly improved. The second embodiment is very similar to the first embodiment. The main difference between the two is that the direct type backlight module of the present embodiment is a positioning member for fixing the shape _ reflection sheet without using a positioning pin. Fig. 5 is a schematic view of a direct type backlight module in accordance with a second embodiment. Referring to FIG. 5, the direct type backlight module 300 of the present invention comprises a lamp phase 21, a plurality of light sources 220, an optical film set 230 and a modeling reflection sheet 240. The light box 211 has an opening 211a, and the light source 220 is disposed in the light box 211. Further, the optical film group 230 is disposed at the opening 211a, and the shape 12 200815863 94497 18499 twf.doc/t is disposed between the light source 220 and the bottom of the light box 211. The above-described shaped reflection sheet 240 has a plurality of reflection slopes 24a, and the light source 22' is located between any two adjacent reflection slopes 24a. It is worth noting that the bottom of the box 210 is formed with positioning members 21〇b, and respectively bears against the surface 24 such as facing away from the side of the light source 220. In this way, the positioning member 210b can fix the molding reflection sheet 240 to prevent the displacement of the molding reflection sheet 24, thereby causing an impact on the optical characteristics exhibited by the overall direct type backlight module 300. It should be noted that the positioning member 210b can be formed by stamping the bottom of the light box 210 corresponding to the shape of the reflective sheet 24'. In other words, the positioning member 210b and the bottom of the light box 210 may be an integrally formed structure. In this way, regardless of the three-dimensional shape of the reflection sheet 24A, the positioning member 210b can be accurately and quickly positioned at the bottom of the light box 21〇. THIRD EMBODIMENT Fig. 6 is a schematic view of a liquid crystal display according to a third embodiment of the present invention. Referring to FIG. 6, the liquid crystal display device 500 of the present invention comprises the above-described direct backlight module 2〇0 and a liquid crystal display panel 400. The structure of the direct-lit moonlight module 200 is clearly disclosed in the first embodiment, and the liquid crystal display panel 400 is disposed adjacent to the opening 21 of the light box 210 (directly disposed behind the backlight module 200. Please refer to FIG. 7 The liquid crystal display panel 4 of the present invention can also be combined with the direct type backlight module 300 to form a liquid crystal display 600. The structure of the backlight module 300 is clearly disclosed in the second embodiment, and the liquid crystal display panel 400 corresponds to It is disposed adjacent to the direct type backlight module 300 in the opening 211a of the light box 211. The above liquid crystal displays 500 and 600 can each be 13 200815863 94497 18499twf.doc/t
藉由本發日狀直下式背光模組扇與3G 學顯示特性。 /、有榖佺的忐 門因二發明之直下式背光模組之底部與光源之 =有0反㈣，且造型反射片上妓射斜面。因此， ^向燈箱底部之紐能藉由反射斜㈣㈣地散射， 由上方之光學膜片組而出射。因此，本發明之 =有良好的光賴邱性。料，具社體反射斜面 以透過定位件或定位銷至少其中之-而穩固地 心於k彳目内，本發明之直下式背_組具 另外，在喊造型反射㈣，㈣本發明之定^ 件為對應造型反射片之外形而設計，且具有對位功能。因 =造型反射片可藉由定位件準確且纽率地定位於燈箱 底邛，以有效避免造型反射片移位。因此，本發明之直下With the Japanese-style direct-lit backlight module fan and 3G learning features. /, There is a flaw in the door due to the invention of the direct type backlight module bottom and the light source = 0 reverse (four), and the shape of the reflective sheet on the inclined plane. Therefore, the button to the bottom of the light box can be scattered by the reflection oblique (four) (four), and is emitted from the upper optical film group. Therefore, the present invention has a good light. Material, having a body reflection bevel to pass through at least one of the positioning member or the positioning pin - and firmly centered on the k-eye, the direct type back_group of the present invention additionally, in the shouting reflection (four), (d) the invention The parts are designed to correspond to the shape of the shape reflection sheet and have a registration function. Because the styling reflector can be accurately and steadily positioned at the bottom of the light box by the positioning member, the displacement of the styling reflection sheet can be effectively avoided. Therefore, the present invention is straight down
式背光模組能提供品質良好之光源。 X 雖然本發明已以較佳實施例揭露如上，然其並非用以 限J本發明，任何熟習此技藝者，在不脫離本發明之精神 =範圍内，當可作些許之更動與潤飾，因此本發明之^護 範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 圖1是習知背光模組之剖面示意圖。 圖2是依照本發明之第一實施例之一種直下式背光 組剖面示意圖。 、 圖3是依照第一實施例之造型反射片示意圖。 圖4是依照第一實施例之定位銷放大示意圖。 14 200815863 94497 18499twf.doc/t 圖5是依照第二實施例之直下式背光模組示意圖。 圖6是依照本發明之第三實施例之液晶顯示器之示意 圖。 圖7是依照本發明之第三實施例之另一種液晶顯示器 之示意圖。 【主要元件符號說明】 100 :背光模組 110、210、211 :燈箱 110a、210a、211a :開口 120、220 :光源 130 :擴散片 140 :反射片 200、300 :直下式背光模組 210b :定位件 230 :光學膜片組 240 :造型反射片 240a:反射斜面 250 :定位銷 252 :底座 252a :凸柱 252b :第一定位凸起 254 :套件 254a :第二定位凸起 256 :螺絲 260 :黏著膠帶 400 :液晶顯示面板 500、600 :液晶顯示器 15The backlight module can provide a good quality light source. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and any skilled person skilled in the art can make some modifications and refinements without departing from the spirit of the invention. The scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a conventional backlight module. Figure 2 is a cross-sectional view showing a direct type backlight unit in accordance with a first embodiment of the present invention. 3 is a schematic view of a molded reflection sheet according to the first embodiment. Fig. 4 is an enlarged schematic view showing a positioning pin according to the first embodiment. 14 200815863 94497 18499twf.doc/t FIG. 5 is a schematic diagram of a direct type backlight module according to a second embodiment. Figure 6 is a schematic view of a liquid crystal display according to a third embodiment of the present invention. Figure 7 is a schematic illustration of another liquid crystal display in accordance with a third embodiment of the present invention. [Main component symbol description] 100: backlight module 110, 210, 211: light box 110a, 210a, 211a: opening 120, 220: light source 130: diffuser 140: reflective sheet 200, 300: direct type backlight module 210b: positioning Piece 230: optical film set 240: shape reflection sheet 240a: reflection slope 250: positioning pin 252: base 252a: boss 252b: first positioning protrusion 254: kit 254a: second positioning protrusion 256: screw 260: adhesive Tape 400: Liquid crystal display panel 500, 600: Liquid crystal display 15