TW201122671A

TW201122671A - Backlight module and liquid crystal display device including the same

Info

Publication number: TW201122671A
Application number: TW98146564A
Authority: TW
Inventors: Chia-Yin Chang; Chin-Ting Weng
Original assignee: Radiant Opto Electronics Corp
Priority date: 2009-12-31
Filing date: 2009-12-31
Publication date: 2011-07-01
Also published as: TWI407203B

Abstract

A backlight module includes a light source, a light guide plate, a frame, and a light-shielding unit. The light guide plate includes a light incident face where the light generated from the light source is incident, a light exiting face extended from a first end portion of the light incident, and a reflection face extended from a second end portion of the light incident face. The light exiting face includes a first light exiting face extended from the second end portion of the light incident face by a predetermined angle, and a second light exiting face extended from the first light exiting face in a direction substantially parallel to the reflection face. The frame is composed of a side frame, a floor frame, and a roof frame thereby forming a containing space to contain the light source and the light guide plate. The floor frame is extended from a third end portion of the side frame. The roof frame is extended from the fourth end portion of the side frame in a direction substantially parallel to the floor frame. The light-shielding unit disposed adjacent to the frame is used to shield the light from the first light exiting face.

Description

201122671 六、發明說明：【發明所屬之技術領域】 ::裝置，且特別是有關於二梅漏光之背晶】疋f7 ΐ ί光模組及應用此背光模組之液光模組【先前技術】一般來說，液晶顯示裝置包含一用顯示杨，以75 —呰伞捃，，用來播放衫像的液晶液曰、、，且，係設於液晶顯示板後方並提供 =取決於背光模組。而應用記=源點員不裝置則特別需求有輕、薄以及低能量損耗的優模免因此，就必須發展出可滿足上述液晶顯示裝置的背光第1圖係繪示依照-習知背光模組i⑽之側視圖。背 ⑽包含一光源110、一導光板120以及一框架導光板120用以導引自切11〇產生的光線而框架 0則用以容置及固定光源U0以及導光板12〇。 [S] 導光板12〇包含一光入射面121、一光出射面122以反射面123。自光源11〇產生的光線射至光入射面 ^光入射面U1接收從光源110發射的光且鄰近於光源的位置。光出射面122發射穿過光入射面121的光且面向反射面123。反射面123用以反射穿過光入射面121 的光且從光入射面121的第二末端部分121b延伸。光入射面的高度“h”大於位於反射面123及光出射面122間的第一 4 201122671 線性距離“d”。光出射面122包含第一光出射面122a與第 • 二光出射面122b，第一光出射面122a從光入射面121的 - 第一末端部分121a延伸且傾斜於反射面123，而第二光出射面122b係由第一光出射面122a延伸且平行於反射面 123 ° 框架130由頂框131、側框132及底框133共同形成一容置空間來容置光源110及導光板120。然而，上述背光模組100結構雖然可滿足輕、薄的需 φ 求。但是，框架130的一部分雖然會遮住光源110和導光板120入光側的上方。但習知的背光模組所使用的框架 130,則會因為第一光出射面122a與第二光出射面122b間的落差導致漏光的問題產生，使得液晶顯示裝置會有局部免點。因此，如何降低或消除上述背光模組的漏光問題，已成為目前研究發展的主要課題之一。 • 【發明内容】因此，本發明之目的係在提供一種背光模組及應用此背光模組之液晶顯示裝置，利用一遮光部結構來達到降低或消除背光模組的漏光問題。此外，遮光部抵接導光板的設計，達到緊密壓貼於導光板進一步增加框架對導光板的夹持力，增加導光板等光學膜片之定位性。依據本發明之一實施例，提供一種背光模組。此背光 . 模組至少包含一光源、一導光板、一框架以及一遮光部。光源用以產生一光線。導光板包含一光入射面、一光出射 201122671 射面。光入射面提供光源產生之光線入射；光射面的射面的—第_末端部分延伸，·反射面由光入面盘第2二末端部分延伸。其中光出射面具有第一出射 '、—射面，第一出射面由光入射面的一第一末端Λρ 分::並與光入射面具有-第-夹角介二至二二=由第：出射面延伸並與反射面大致平行。框架包延:：^框之第四末端部架用《遮蔽自該第光;光部係鄰設於該枢光模===實=供-種背光模組。此背面《及-反射光入射面、-光出射出射面由=面之光線… 二㈣-第二末端部分延伸二射= 八：：：出射面，第一出射面由光入射面的-第-末端邱具有一第一夾角介於。度至-度；射面且有一延伸並與反射面大致平行。其中反朵入紅帛反射面以及一第二反射面。第一反射面由 '面的第二末端部分延伸並與光入射面具第角"於0度至90度，第二出射 ^第一夾出射面大致平行。框架包含n射面延伸並與光辑接於光源’底框由侧框的第三末-:== 201122671 由侧框之第四末端部分延伸並與底框大致平行，其中側框、底框與頂框共同形成一容置空間以容置光源及導光 ’ 板。遮光部係鄰設於該框架用以遮蔽自該第一出射面出紐之光線。所 ^依據本發明之一實施例，提供一種背光模組。此背光模組至少包含一光源'一導光板、一框架、至少二光學膜片以及一遮光部。光源用以產生一光線。導光板包含I光入射面、一光出射面以及一反射面。光入射面提供光源產 # 纟之光線入射；光出射面由光入射面的一第一末端部分延伸；反射面由光入射面的一第二末端部分延伸。其中光出射面具有第一出射面與第二出射面，第一出射面由光入射面的一第一末端部分延伸並與光入射面具有一第一夾角介於〇度JL %度’第二出射面由第一出射面延伸並與反射面大致平行。框架包含一第一側框、一第一底框以及以及一第-頂框。第一側框鄰接於光源，第一底框由第一側框的第二末端部分延伸；第一頂框由第一侧框之第四末端部分 _延伸並與第-底框大致平行，其中第一側框、第一底框與第-=框共同形成一容置空間以容置光源及導光板。光學 $片叹置於導光板n光面上。遮光部係設置於該光予膜片之-侧且位於光學膜片與第一出射面之間。上述之實施例中之背光模組更包含設有一抗反射層，第-底框上之—區域内’此區域包含自第一底框 /、側框一連接處至第一底框距連接處5公分之範在特定實施例中，遮光部可為―片冑，係一端連接於 201122671 —第二夾角。係設置於頂框該框架之第-頂框’且片體與第—頂框具有在特定實施例中，遮光部可為一塊體，與導光板之間。在特定實施例中，遮光部.201122671 VI. Description of the Invention: [Technical Fields of the Invention] :: Devices, and in particular, the backlights of the two plum leaks] 疋f7 ΐ ί optical module and liquid light module using the backlight module In general, the liquid crystal display device includes a liquid crystal liquid for displaying a shirt image with a display of Yang, a 75-inch umbrella, and is disposed behind the liquid crystal display panel and provided by the backlight module. group. However, the application of the source = source device is not particularly suitable for light, thin and low energy loss. Therefore, it is necessary to develop a backlight that satisfies the above liquid crystal display device. Side view of group i (10). The back surface (10) includes a light source 110, a light guide plate 120, and a frame light guide plate 120 for guiding light generated from the cut 11 而 and the frame 0 for accommodating and fixing the light source U0 and the light guide plate 12A. [S] The light guide plate 12A includes a light incident surface 121 and a light exit surface 122 to reflect the surface 123. Light rays generated from the light source 11A are incident on the light incident surface. The light incident surface U1 receives the light emitted from the light source 110 and is adjacent to the position of the light source. The light exit surface 122 emits light that passes through the light incident surface 121 and faces the reflective surface 123. The reflecting surface 123 is for reflecting light passing through the light incident surface 121 and extending from the second end portion 121b of the light incident surface 121. The height "h" of the light incident surface is greater than the first 4 201122671 linear distance "d" between the reflective surface 123 and the light exit surface 122. The light exit surface 122 includes a first light exit surface 122a and a second light exit surface 122b extending from the first end portion 121a of the light incident surface 121 and inclined to the reflective surface 123, and the second light The exit surface 122b extends from the first light exit surface 122a and is parallel to the reflective surface 123°. The top frame 131, the side frame 132 and the bottom frame 133 form an accommodating space to accommodate the light source 110 and the light guide plate 120. However, although the structure of the backlight module 100 described above can meet the requirements of lightness and thinness. However, a part of the frame 130 blocks the light source 110 and the light incident side of the light guide plate 120. However, the frame 130 used in the conventional backlight module causes a problem of light leakage due to the difference between the first light exit surface 122a and the second light exit surface 122b, so that the liquid crystal display device is partially exempt. Therefore, how to reduce or eliminate the light leakage problem of the above backlight module has become one of the main research topics at present. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a backlight module and a liquid crystal display device using the same, which utilizes a light-shielding structure to reduce or eliminate light leakage of the backlight module. In addition, the light-shielding portion abuts against the design of the light guide plate, and is closely pressed against the light guide plate to further increase the clamping force of the frame to the light guide plate, thereby increasing the positioning property of the optical film such as the light guide plate. According to an embodiment of the invention, a backlight module is provided. The backlight module includes at least a light source, a light guide plate, a frame and a light shielding portion. The light source is used to generate a light. The light guide plate includes a light incident surface, and a light exits the 201122671 surface. The light incident surface provides light incident from the light source; the _ end portion of the emitting surface of the light emitting surface extends, and the reflecting surface extends from the second end portion of the light entering the dial. Wherein the light exit surface has a first exit ', a shot surface, the first exit surface is divided by a first end 光ρ of the light incident surface: and the light incident surface has a -first-angle angle two to two two = by the first : The exit surface extends and is substantially parallel to the reflective surface. The frame end of the frame:: ^ frame is used for the fourth end of the frame to "shadow from the first light; the light portion is adjacent to the pivot mode === real = supply type backlight module. The back side "and - the reflected light incident surface, the light exiting the exit surface by the = surface light... the second (four) - the second end portion extends the two shot = eight::: the exit surface, the first exit surface is from the light incident surface - The first end Qiu has a first angle between. Degree to - degree; the surface has an extension and is substantially parallel to the reflecting surface. Among them, the reverse reflection into the red ray reflection surface and a second reflection surface. The first reflecting surface extends from the second end portion of the 'face and is at an angle of 0 to 90 degrees with respect to the light incident mask angle, and the second exiting portion is substantially parallel to the first clip exiting surface. The frame includes an n-beam extension and is connected to the light source. The bottom frame is terminated by the third end of the side frame -:== 201122671 extends from the fourth end portion of the side frame and is substantially parallel to the bottom frame, wherein the side frame and the bottom frame Together with the top frame, an accommodating space is formed to accommodate the light source and the light guide plate. The light shielding portion is adjacent to the frame for shielding light from the first exit surface. According to an embodiment of the present invention, a backlight module is provided. The backlight module comprises at least one light source 'a light guide plate, a frame, at least two optical films and a light shielding portion. The light source is used to generate a light. The light guide plate includes an I light incident surface, a light exit surface, and a reflective surface. The light incident surface provides light incident from the light source; the light exit surface extends from a first end portion of the light incident surface; and the reflective surface extends from a second end portion of the light incident surface. The light exit surface has a first exit surface and a second exit surface, and the first exit surface extends from a first end portion of the light incident surface and has a first angle with the light incident mask at a degree JL% degrees 'second The exit surface extends from the first exit surface and is substantially parallel to the reflective surface. The frame includes a first side frame, a first bottom frame, and a first-top frame. The first side frame is adjacent to the light source, and the first bottom frame is extended by the second end portion of the first side frame; the first top frame is extended by the fourth end portion _ of the first side frame and substantially parallel to the first bottom frame, wherein The first side frame, the first bottom frame and the first-= frame together form an accommodating space for accommodating the light source and the light guide plate. Optical $ sighs on the n-surface of the light guide. The light shielding portion is disposed on the side of the photoreceptor film and between the optical film and the first exit surface. The backlight module in the above embodiment further includes an anti-reflection layer, and the area on the first-bottom frame includes the area from the first bottom frame/the side frame to the first bottom frame. 5 cm In a particular embodiment, the opaque portion can be a "sheet" with one end connected to 201122671 - the second angle. The first top frame is disposed on the top frame of the frame and the first and second frames are formed. In a specific embodiment, the light shielding portion may be a single body and the light guide plate. In a particular embodiment, the shading portion.

之擔片，框體包覆框架且框體具有-第二側框3 = 框以及一第二頂框，其中第二侧框鄰設於第一側框第；: 底框鄰设於第-底框，第二頂框鄰設於第—麵，擔由第二頂框末端部分延伸並與第二頂框具有—第三爽田，、本發明之優點為，透過遮光部的設計，消除漏光問題的產生，避免液晶顯示裝置 = 【實施方式】請參照第2圖，其係繪示根據本發明之一實施例之背光模組的側視圖。本實施例之背光模組2〇〇可與一液晶顯示模組（未繪示）組合’形成一液晶顯示裝置（Liquid Crystal Display ; LCD) ’其中背光模組200係一侧邊入光式背光模組，且背光模組200係相對於液晶顯示模組設置，亦即液晶顯示模組係設置於背光模組200之上。背光模組200包含至少一光源210、一導光板220、以一框架230以及一遮光部234。光源210之數量可根據背光模組200的光學需求來加以調整。導光板220包含一光入射面221、一光出射面222以及一反射面223。光入射面221係提供由光源210產生之光線入射。光出射面222由光入射面221的一第一末端部分221a延伸。反射面223由光入射面221的一第二末端部 8 201122671 刀221 b延伸。光出射面222具有一第一出射面222a以及一第二出射面222b ’第一出射面222a由光入射面221的 * 第一末端部分延伸並與光入射面222具有一第一夾角 α介於〇度至90度’第二出射面222b由第一出射面222a 延伸並與反射面223大致平行。導光板220係利用例如射出成型的方式來製成平板形結構或楔形板結構，其材質例如為光硬化型樹脂、丙烯或聚甲基丙烯酸甲脂(PMma)。框架230由一頂框231、一侧框232以及一底框233 • 共同形成一容置空間以容置光源210以及導光板22〇。側框231之一侧係用以設置光源210。底框233由側框232 的一第二末端部分232a延伸。頂框231由側框232的一第四末端部分232b延伸並且與底框233大致平行，此一頂框 2/1、與則述之底框233及侧框232在具有光源210這一侧形成一“匚，’字型的剖面結構。 2光部234為一片體，係鄰設於該框架230用以遮蔽出射面222a出射之光線。在特定實施例中，遮光部參 2可為一獨立設計之結構或者可與框架230為一體成型在特定實施例中，更可將設計成與第—出射面咖 231 ^仃(如第3圖之遮光部334)，或者一端貼附於頂框另如延伸出頂框231末端部分呈自然下垂，例 ^之遮光部634，當然遮光部634亦可以-端貼附頂框^笛3-1上。在特定實施例中，遮光部亦可為一設置於 /倍二·〜出光面之間的塊體，例如第7圖之遮絲734。 .例如= 种，亦可為一獨立設計的框體結構， *之遮光部934。對於本領域具有通常知識者應 201122671 可知道的是，遮光部234與第一出射面222a之相對關係並非用以限制本發明，遮光部234與頂框231具有第二夾角冷介於0度至90度。導光板設置在框架内及遮光部設置於頂框的技術’應屬於本技術領域之一般常識者所熟知，故不再加以贅述。第4A圖及第4B圖係繪示根據本發明之一實施例之背光模組400的側視圖。本實施例之背光模組400與背光模 200組大致相同，相同之處在此不在贅述，其相異處在於本實施例之背光模組更包含一抗反射層450設置於底框 433上之一區域L内，此區域L包含自底框433上與側框 432 —連接處至底框433上距該連接處5公分之範圍。抗反射層450的設置可更進一步的減少反射至第一光出射面 422a的光線，使得漏光情形可進一步的降低或消除。在特定實施例中，抗反射層450係由一低反射性或擴散反射材質所形成，例如一深色油墨。在特定實施例中，此抗反射層450可利用各種適當的方式形成於底框433 上，例如以印刷方式或塗佈方式。在特定實施例中，更可利用對抗反射層450進行一霧化處理來達到抗反射之目的。在特定實施例中，抗反射層450更可為與底框433 — 體射出成型之深色層。第5圖係繪示根據本發明之一實施例之背光模組500 的側視圖。背光模組500與背光模組200大致相同’相同之處在此不在贅述’其相異處在於背光模組500之導光板 520更具有一反射面523,反射面523具有第一反射面523a 以及第二反射面523b’第一反射面523a由光入射面521 201122671 的第二末端部分延伸521b並與光入射面521具有一第三夾 • 角T介於〇度至90度，第二反射面523b由該第一反射面 523a延伸並與該光出射面522大致平行。藉此，可將一反射片560固定在框架530上，避免反射片560由框架530 上脫落’但在特定實施例中，反射片560亦可利用其他方式（例如黏貼方式）固定在框架530上。此外，在特定實施例中，背光模組200、300、400以及500更包含至少一光學膜片（未繪示），且此光學膜片係 φ 設置在上述之導光板之上，此光學臈片可為擴散片、稜鏡片、增亮膜(Brightness Enhancement Film ; BEF)、反射式增亮膜（Dual Brightness Enhancement Film ; DBEF)、非多層膜式反射偏光片（Diffused Reflective Polarizer Film ; DRPF) 或上述之任意组合。第8圖係係繪示根據本發明之一實施例之背光模組 800的側視圖。在本實施例中，遮光部834係鄰設於光學膜片870之一側且設置於光學膜片87〇之最底層上，或者 # 在特定實施例中，遮光部幻4亦可以貼附方式設置於光學膜片8 7 0之一側。透過遮光部的設計’可達到降低或消除漏光問題的產生，以避免液晶顯示裝置出現局部亮點。、雖然本發明已以實施方式揭露如上，然其並非用以限 ^本毛月…任何熟習此技藝者，在不脫離本發明之精神和 I巳圍内’田可作各種之更動與潤飾，因此本發明之保護範 •圍#視後附之申請專利範圍所界定者為準。 201122671 【圖式簡單說明】 " 為讓本發明之上述和其他目的、特徵、優點與實施例 * 能更明顯易僅，所附圖式之說明如下：第1圖係繪示依照一習知背光模組之剖面示意圖。第2圖係繪示依照本發明一實施例·^背光模組的剖面示意圖。第3圖係繪示依照本發明另一實施例之背光模組的剖面示意圖。 * 第4A圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。第4B圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。第5圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。第6圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。 * 第7圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。第8圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。第9圖係繪示依照本發明又一實施例之背光模組的剖面示意圖。 [s] 12 201122671a support sheet, the frame covers the frame and the frame has a second side frame 3 = a frame and a second top frame, wherein the second side frame is adjacent to the first side frame; the bottom frame is adjacent to the first a bottom frame, the second top frame is adjacent to the first surface, and extends from the end portion of the second top frame and has a third top field. The advantage of the present invention is that the design of the light shielding portion is eliminated. The present invention is directed to FIG. 2, which is a side view of a backlight module according to an embodiment of the present invention. The backlight module 2 of the embodiment can be combined with a liquid crystal display module (not shown) to form a liquid crystal display device (LCD). The backlight module 200 is light-emitting backlight on one side. The module and the backlight module 200 are disposed relative to the liquid crystal display module, that is, the liquid crystal display module is disposed on the backlight module 200. The backlight module 200 includes at least one light source 210, a light guide plate 220, a frame 230, and a light shielding portion 234. The number of light sources 210 can be adjusted according to the optical requirements of the backlight module 200. The light guide plate 220 includes a light incident surface 221, a light exit surface 222, and a reflective surface 223. The light incident surface 221 provides light incident from the light source 210. The light exit surface 222 extends from a first end portion 221a of the light incident surface 221. The reflecting surface 223 extends from a second end portion 8 201122671 knife 221 b of the light incident surface 221. The light exit surface 222 has a first exit surface 222a and a second exit surface 222b. The first exit surface 222a extends from the first end portion of the light incident surface 221 and has a first angle α with the light incident surface 222. The second exit surface 222b extends from the first exit surface 222a and is substantially parallel to the reflective surface 223. The light guide plate 220 is formed into a flat plate structure or a wedge plate structure by, for example, injection molding, and is made of, for example, a photocurable resin, acryl or polymethyl methacrylate (PMma). The frame 230 is formed by a top frame 231, a side frame 232, and a bottom frame 233 to form an accommodating space for accommodating the light source 210 and the light guide plate 22A. One side of the side frame 231 is used to set the light source 210. The bottom frame 233 extends from a second end portion 232a of the side frame 232. The top frame 231 extends from a fourth end portion 232b of the side frame 232 and is substantially parallel to the bottom frame 233. The top frame 2/1, the bottom frame 233 and the side frame 232 are formed on the side having the light source 210. A "匚," shaped cross-sectional structure. The light portion 234 is a piece of light that is disposed adjacent to the frame 230 to shield the light exiting the exit surface 222a. In a particular embodiment, the light-shielding portion 2 can be an independent The structure of the design may be integrally formed with the frame 230 in a specific embodiment, and may be designed to be attached to the first-outlet surface (such as the light-shielding portion 334 of FIG. 3), or the end may be attached to the top frame. For example, the end portion of the top frame 231 is naturally sag, and the light shielding portion 634 can be attached to the top frame 3-1. In a specific embodiment, the light shielding portion can also be a a block disposed between /2 and the light-emitting surface, such as the shade 734 of Fig. 7. For example, the type may be an independently designed frame structure, * the light-shielding portion 934. For the field Generally, the knowledgeable person should know 201122671 that the relative relationship between the light shielding portion 234 and the first exit surface 222a is In order to limit the present invention, the light shielding portion 234 and the top frame 231 have a second angle of cold between 0 degrees and 90 degrees. The technique in which the light guide plate is disposed in the frame and the light shielding portion is disposed on the top frame is generally in the technical field. 4A and 4B are side views of a backlight module 400 according to an embodiment of the present invention. The backlight module 400 and the backlight module 200 of the present embodiment are shown in FIG. The difference is that the same is not described herein. The difference is that the backlight module of the embodiment further includes an anti-reflection layer 450 disposed in a region L of the bottom frame 433. The region L includes the bottom frame 433. The upper and the side frames 432 are connected to the bottom frame 433 at a distance of 5 cm from the connection. The arrangement of the anti-reflection layer 450 can further reduce the light reflected to the first light exit surface 422a, so that the light leakage can be further improved. Reduced or eliminated. In a particular embodiment, the anti-reflective layer 450 is formed from a low reflectivity or diffuse reflective material, such as a dark ink. In a particular embodiment, the anti-reflective layer 450 can utilize various suitable means. Formed at the bottom 433, for example, by printing or coating. In a specific embodiment, an anti-reflection layer 450 can be used for an atomization treatment to achieve anti-reflection. In a specific embodiment, the anti-reflection layer 450 can be The bottom layer 433 is integrally formed with a dark layer formed by the body. Figure 5 is a side view of the backlight module 500 according to an embodiment of the present invention. The backlight module 500 is substantially identical to the backlight module 200. The difference between the light guide plate 520 of the backlight module 500 and the reflective surface 523 is that the reflective surface 523 has a first reflective surface 523a and the second reflective surface 523b. The first reflective surface 523a is formed by the light incident surface. The second end portion of the 521 201122671 extends 521b and has a third clip with the light incident surface 521. The angle T is between 90 degrees and 90 degrees. The second reflecting surface 523b extends from the first reflecting surface 523a and the light emitting surface 522 is roughly parallel. Thereby, a reflection sheet 560 can be fixed on the frame 530 to prevent the reflection sheet 560 from coming off the frame 530. However, in a specific embodiment, the reflection sheet 560 can also be fixed on the frame 530 by other means (for example, adhesive manner). . In addition, in a specific embodiment, the backlight modules 200, 300, 400, and 500 further include at least one optical film (not shown), and the optical film system φ is disposed on the light guide plate. The sheet may be a diffusion sheet, a crepe sheet, a brightness enhancement film (BEF), a reflective brightness enhancement film (Dual Brightness Enhancement Film; DBEF), a non-multilayer film reflective polarizer (Diffused Reflective Polarizer Film (DRPF)) or Any combination of the above. Figure 8 is a side elevational view of a backlight module 800 in accordance with an embodiment of the present invention. In this embodiment, the light shielding portion 834 is disposed adjacent to one side of the optical film 870 and disposed on the bottom layer of the optical film 87, or # in a specific embodiment, the light shielding portion 4 can also be attached. It is disposed on one side of the optical film 807. The design of the light-shielding portion can be used to reduce or eliminate the problem of light leakage to avoid local bright spots in the liquid crystal display device. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the scope of the present invention. Anyone skilled in the art can make various changes and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is defined by the scope of the patent application attached. The above and other objects, features, advantages and embodiments of the present invention can be made more obvious. The description of the drawings is as follows: FIG. 1 is a diagram according to a conventional A schematic cross-sectional view of the backlight module. 2 is a cross-sectional view showing a backlight module according to an embodiment of the present invention. 3 is a cross-sectional view showing a backlight module in accordance with another embodiment of the present invention. * Fig. 4A is a cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention. 4B is a cross-sectional view showing a backlight module according to still another embodiment of the present invention. Figure 5 is a cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention. Figure 6 is a cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention. * Fig. 7 is a cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention. Figure 8 is a cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention. Figure 9 is a cross-sectional view showing a backlight module in accordance with still another embodiment of the present invention. [s] 12 201122671

【主要元件符號說明】 100 :背光模組 110 : 120 :導光板 121 : 121a :第一末端部分 121b 122 :光出射面 122a 122b :第二光出射面 123 : 130 :框架 131 : 132 :側框 133 ： 200 :背光模組 210 ： 220 :導光板 221 ： 221a :第一末端部分 221b 222 :光出射面 222a 222b :第二光出射面 223 ： 230 :框架 231 ： 232 :側框 232a 232b :第四末端部分 233 : 234 :遮光部 300 :背光模組 400 :背光模組 422a 431 :頂框 432 ： 450 :抗反射層 500 :背光模組 520 :導光板 521 ： 521b :第二末端部分 522 ： 522a :第一光出射面 522b 523 :反射面 523a :第一光出射面側框光入射面光出射面 :第二光出射面 :第一反射面光源光入射面 :第二末端部分 :第一光出射面反射面頂框底框光源光入射面 :第二末端部分 :第一光出射面反射面頂框 :第三末端部分底框 13 201122671 560 :反射片 523b :第二反射面 600、700、800、900 :背光模 634、734、834、934 :遮光部 h :高度 α :第一失角 7 :第三夾角 d :距離万.第二央角 L ·區域[Description of main component symbols] 100: backlight module 110: 120: light guide plate 121: 121a: first end portion 121b 122: light exit surface 122a 122b: second light exit surface 123: 130: frame 131: 132: side frame 133 : 200 : backlight module 210 : 220 : light guide plate 221 : 221a : first end portion 221b 222 : light exit surface 222a 222b : second light exit surface 223 : 230 : frame 231 : 232 : side frame 232a 232b : Four end portions 233: 234: light shielding portion 300: backlight module 400: backlight module 422a 431: top frame 432: 450: anti-reflection layer 500: backlight module 520: light guide plate 521: 521b: second end portion 522: 522a: first light exit surface 522b 523: reflective surface 523a: first light exit surface side frame light incident surface light exit surface: second light exit surface: first reflective surface light source light incident surface: second end portion: first Light exit surface reflecting surface top frame bottom frame light source light incident surface: second end portion: first light exit surface reflecting surface top frame: third end portion bottom frame 13 201122671 560: reflective sheet 523b: second reflecting surface 600, 700 , 800, 900 : Backlight mode 634, 734, 834, 934: shading part h: height α: first corner angle 7: third angle d: distance 10,000. second corner angle L · area

[S] 14[S] 14

Claims

201122671 VII. Patent application scope: 1. A backlight module, comprising: at least one light source 'for generating a light; the light guide plate comprising: a line entrance: a light incident surface ′ is provided by the at least one light source a light-emitting surface extending from a first end portion of the light incident surface; and a reflective surface extending from a second end portion of the light incident surface, wherein the light exiting mask has a first exit surface and a second exit surface Φ extending from the first end portion of the light incident surface and having a first angle with the light incident mask, the second exit surface extending from the first exit surface of the 3H and The reflective surface is substantially parallel; and a frame comprising: • a first side frame adjacent to the at least one light source; a first bottom frame extending from a third end portion of the first side frame; a top frame extending from a fourth end portion of the first side frame and substantially parallel to the first bottom frame, wherein the first side frame, the first bottom frame and the first top frame together form an accommodation space To accommodate this to And a light guide plate; and a light shielding portion 'line disposed adjacent to the frame to shield the light from the first exit surface of the. The backlight module of claim 1, wherein the light shielding portion is a one piece body, the first top frame is connected to one end of the frame, and the first top frame is coupled to the first top frame Has a second inflammation angle. 3. The backlight module of claim 1, wherein the light shielding portion is a single body disposed between the top frame and the light guide plate. 4. The backlight module of claim 1, wherein the light shielding portion is a frame body and a blocking piece, the frame body covers the frame and the frame body has a second side frame and a second bottom frame And a second top frame, wherein the second side frame is adjacent to the first side frame, the second bottom frame is adjacent to the first bottom frame, and the second top frame is adjacent to the first top frame. The flap extends from the end portion of the second top frame and has a third angle with the second top frame. 5. The backlight module of claim 1, further comprising an anti-reflection layer disposed in an area on the first bottom frame, the area including the first side frame and the first side frame A connection to the first bottom frame is within 5 cm of the joint. 6. The backlight module of claim 5, wherein the anti-reflective layer is composed of a low reflection material or a diffuse reflection material. 7. The backlight module of claim 6, wherein the anti-reflective layer is a dark ink printed layer. The backlight module of claim 6, wherein the antireflection layer is a dark ink coating layer. 9. The backlight module of claim 6, wherein the anti-reflective layer is an atomized layer. 10. The backlight module of claim 6, wherein the anti-reflective layer is a dark layer integrally formed with the first bottom frame. 11. The backlight module of claim 1, wherein the first angle is between 0 degrees and 90 degrees. 12. The backlight module of claim 2, wherein the second angle is between 0 degrees and 90 degrees. 13. The backlight module of claim 4, wherein the third angle is between 0 degrees and 90 degrees. 14. The backlight module of claim 1, wherein the light shielding portion is integrally formed with the frame. 15. The backlight module of claim 1, wherein the light shielding portion is assembled to the frame. [S] 17 201122671 16. The backlight module of claim 1, further comprising: at least one optical film disposed on the light guide plate; wherein the optical film is a diffusion sheet, a cymbal sheet, and brightening Membrane, reflective enamel film, non-circular film reflective polarizer or any combination of the above. A backlight module comprising: at least one light source' for generating a light; a light guide plate comprising: - a light incident surface for providing the light incident by the at least one light source; a light exit surface Extending from a first end portion of the light incident surface; and a reflective surface extending from a second end portion of the light incident surface, wherein the light exiting mask has a first exit surface and a second exit surface The first exit surface extends from the first end portion of the light incident surface and has a first angle with the light incident mask, and the second exit surface extends from the first exit surface and is substantially parallel to the reflective surface. Wherein the reflective mask has a first reflective surface and a second reflective surface, the first reflective surface extending from the second end portion of the light incident surface and having a third angle with the light incident mask, the second reflection a surface extending from the first reflective surface and substantially parallel to the light exit surface; and a frame comprising: 201122671 a first side frame adjacent to the at least one light source; extending; - a first bottom frame by the first One of the side frames is extended at a third end portion, and a first top frame is extended from the fourth end of the first side frame and substantially parallel to the first wire, and the "first side frame" and the bottom frame are The first-top frame forms a accommodating space for accommodating;: one light source and the light guide plate; and a light-shielding portion adjacent to the frame for shielding the light emitted from the self-emitting surface. In the backlight module, the light shielding portion is a body end connected to the first top frame of the (four), and the sheet body and the first top frame have a second angle. ^, as claimed in claim 17 The backlight module, wherein the light shielding portion is disposed between the top frame and the light guide plate. The backlight module of claim 17, wherein the light shielding portion comprises a frame body and a blocking piece. The frame encloses the frame and the frame has an f: a side frame, a second bottom frame, and a second top frame, wherein the i-side frame is adjacent to the first side frame In the first wire, the first and the top are sighed by the first top frame, and the flap is extended by the second top frame end portion/knife and the second top frame A backlight module according to claim 17, further comprising an anti-reflection layer [s] 19 201122671 disposed in an area on the bottom frame, the area is included from the bottom frame The side frame is connected to the bottom frame by a distance of 5 cm from the connection. 22. The backlight module of claim 21, wherein the anti-reflection layer is made of a low reflection material or a diffuse reflection material. The backlight module of claim 22, wherein the anti-reflection layer is a dark ink printing layer. 24. The backlight module of claim 22, wherein the anti-reflection layer is a dark color The backlight module of claim 22, wherein the anti-reflection layer is an atomization layer. 26. The backlight module of claim 22, wherein the anti-reflection layer is * A dark layer formed by injection molding integrally with the bottom frame. 27. The backlight module of claim 17, wherein the first angle is between 90 degrees and 90 degrees. 28. The backlight module of claim 18, wherein the second angle is between 0 degrees and 90 degrees. The backlight module of claim 17, wherein the third angle is between 0 degrees and 90 degrees. 30. The backlight module of claim 20, wherein the fourth angle is between 0 degrees and 90 degrees. The backlight module of claim 17, wherein the light shielding portion is integrally formed with the frame. The backlight module of claim 17, wherein the light shielding portion is assembled on the frame. The backlight module of claim 17, further comprising: at least one optical film disposed on the light guide plate; wherein the optical film is a diffusion sheet, a silicon sheet, a brightness enhancement film, a reflective brightness enhancement film , non-multilayer film reflective polarizers or any combination of the above. 34. A backlight module, comprising: at least one light source for generating a light; a light guide plate comprising: a light incident surface for providing the light incident by the at least one light source; a light exit surface And extending from a first end portion of the light incident surface; and 21 201122671 reflecting surface extending from a second end portion of the light incident surface, wherein the light exiting mask has a first exit surface and a second a first exit surface extending from the first end portion of the light incident surface and having a first angle with the light incident mask, the second exit surface extending from the first exit surface and substantially parallel to the reflective surface And a frame comprising: a first side frame adjacent to the at least one light source; a first bottom frame extending from a third end portion of the first side frame; the fish: the first top frame, The fourth end portion of the first side frame extends and is substantially parallel to the first bottom frame, wherein the first side frame, the first bottom frame and the μ first top frame together form an accommodating space to accommodate the at least a light source a light plate; μ at least two optical films disposed on the second light-emitting surface of the light guide plate; and a first light-shielding portion disposed on one side of the at least two optical sheets and located on the at least two optical films Between the first exit faces. The backlight module of claim 34, wherein the light shielding portion is a sheet. The backlight module of claim 34, wherein the backlight module is further configured to include an anti-reflection layer disposed on the first bottom frame. In one of the upper regions, the region includes a range from the first bottom frame to the first side frame to the first bottom frame 5 cm from the connection. 38. The backlight module, wherein the anti-reflection layer is composed of a low-reflection material or a diffuse reflection material. The backlight module of claim 38, wherein the anti-reflection layer is a dark ink printing layer. The backlight module of claim 38, wherein the anti-reflective layer is a dark ink coating layer. The backlight module of claim 38, wherein the anti-reflective layer is an atomized layer. The backlight module of claim 38, wherein the anti-reflective layer is a dark layer integrally formed with the first bottom frame. 43. The backlight module of claim 34, the first The angle is between 0 and 90 degrees. IS1 23 201122671 44. A liquid crystal display device comprising: a liquid crystal display module; and a backlight module, comprising: a light guide plate comprising: a light incident surface generated by the light source to provide the at least one light incident;

a light exit surface extending from the light incident surface portion; and a first end is divided; the reflective surface is a second end portion of the light incident surface, wherein the light exiting mask has a first exit surface and a second exit surface, the first exit surface extending from the first end portion of the light incident surface and having a first angle with the light incident mask, the second exit surface extending from the first exit surface and The reflecting surfaces are substantially parallel;

a frame comprising: a first side frame adjacent to the at least one light source; a first bottom frame extending from a third end portion of the first side frame; a first top frame from the first side a fourth end portion of the frame extends and is substantially parallel to the first wire, wherein the first side frame, the first bottom frame and the first top frame together form an accommodation space (four) to accommodate the at least light source and the a light-guiding plate; and a light-shielding portion disposed adjacent to the frame for shielding the light emitted from the first-out [S3 24 201122671 emitting surface and the film is -1 as claimed in claim 4, The light shielding portion is a single body, and the first top frame connected to the frame at one end has a second angle with the first top frame. The liquid crystal display device of claim 44, wherein the block is disposed between the top frame and the light guide plate. The liquid crystal display device of claim 44, wherein the light shielding portion is a frame body and a collision piece, the frame body covers the frame, and the frame body has a second bottom frame and a second top frame, wherein the second side = adjacent to the first-difficult, the second wire is in the first bottom frame, the top frame is adjacent to the first-top frame, and the blank is The second top frame end turns to extend and has a third angle with the second top frame. Shot 2 8 = Item 4: The liquid crystal display device described above further contains - anti-anti-:. Also placed in the area of the first-bottom frame, the area includes a range from the first frame to the first side frame-to-the first bottom frame that is 1 cm away from the connection. The liquid crystal display device of claim 48, wherein the anti-reflection « ' is composed of a low reflection material or a diffuse reflection material. The liquid crystal display device of claim 49, wherein the antireflection layer is a dark ink printed layer. The liquid crystal display device of claim 49, wherein the antireflection layer is a dark ink coating layer. The liquid crystal display device of claim 49, wherein the antireflection layer is an atomization treatment layer. The liquid crystal display device of claim 44, wherein the anti-reflective layer is a dark layer integrally formed with the bottom frame. 54. The liquid crystal display device of claim 44, wherein the first angle is between ten degrees and 90 degrees. The liquid crystal display device of claim 45, wherein the second angle is between ten degrees and 90 degrees. The liquid crystal display device of claim 47, wherein the third angle is between ten degrees and 90 degrees. The liquid crystal display device of claim 44, wherein the light shielding portion is integrally formed with the frame. [S] The liquid crystal display device of the above-mentioned, wherein the light shielding portion 58 is assembled on the frame as claimed. The liquid crystal display device of claim 44, further comprising: = less - an optical film disposed on the light guide plate; ah: Zhong Qianxue diaphragm is a diffusion sheet, a cymbal sheet, a brightness enhancement film, a reflective 曰Film, non-multilayer film reflection W or any combination of the above.

60. A liquid crystal display device comprising: a liquid crystal display module; and a light boiling mold, and disposed relative to the liquid crystal display module, comprising: at least one light source for generating a light; a light guide plate comprising : a light incident surface generated by a light source, providing at least the light incident;

a light exiting surface extending from the light incident portion; and a first end of the surface extending from the reflective surface by a second end portion of the light incident surface, wherein the light exiting surface has a "first exit surface" and a a first emitting surface, the first exiting portion is incident from the first end portion of the light incident surface, and the first emitting surface is extended from the first emitting surface by the first emitting surface [2 IS1 27 201122671, wherein the reflective mask has a first a reflective surface and a second reflective surface extending from the second end portion of the light incident surface and having a third angle with the light incident mask, the first reflective surface extending from the first reflective surface And substantially parallel to the light exit surface; and a frame comprising: a first side frame adjacent to the at least one light source; a first bottom frame extending from a third end portion of the first side frame a first top frame extending from a fourth end portion of the first side frame and substantially parallel to the first bottom frame, wherein the first side frame, the first bottom frame and the first top frame form together a housing space for accommodating the at least a light source and the light guide plate; and a light shielding portion disposed adjacent to the frame for shielding light emitted from the first exit surface. The liquid crystal display device of claim 60, wherein the light shielding portion is a one piece, one end is connected to the first top frame of the frame, and the piece has a second angle with the first top frame . The liquid crystal display device of claim 60, wherein the light shielding portion is a single body disposed between the top frame and the light guide plate. The liquid crystal display device of claim 60, wherein the light shielding portion is a frame and a shutter, the frame covers the frame and the frame has 28 201122671 a second side frame, a first a second bottom frame and a second top frame, wherein the second side frame is adjacent to the first side frame, the second bottom frame is adjacent to the first bottom frame, and the second top frame is adjacent to the second bottom frame a first top frame extending from the end portion of the second top frame and having a fourth angle with the second top frame. The liquid crystal display device of claim 60, further comprising an anti-reflection layer disposed in an area of the first bottom frame, the area comprising the first side frame connected to the first side frame It is on the first bottom frame within a range of 5 cm from the connection φ. The liquid crystal display device of claim 64, wherein the anti-reflective layer is composed of a low reflection material or a diffuse reflection material. The liquid crystal display device of claim 65, wherein the antireflection layer is a dark ink printed layer. The liquid crystal display device of claim 65, wherein the antireflection layer is a dark ink coating layer. The liquid crystal display device of claim 65, wherein the antireflection layer is an atomization treatment layer. The liquid crystal display device of claim 65, wherein the anti-reflective layer is a dark layer integrally formed with the bottom frame. The liquid crystal display device of claim 60, wherein the first angle is between 0 and 90 degrees. The liquid crystal display device of claim 61, wherein the second angle is between ten degrees and 90 degrees. The liquid crystal display device of claim 61, wherein the third angle is between ten degrees and 90 degrees. The liquid crystal display device of claim 63, wherein the fourth angle is between 0 and 90 degrees. The liquid crystal display device of claim 60, wherein the light shielding portion is integrally formed with the frame. The liquid crystal display device of claim 60, wherein the light shielding portion is assembled to the frame. The liquid crystal display device of claim 60, further comprising: at least one optical film disposed on the light guide plate; wherein the optical film is a diffusion sheet, a silicon sheet, a brightness enhancement film, a reflective brightness enhancement film , non-multilayer film reflective polarizers or any combination of the above. 201122671 77. A liquid crystal display device comprising: a liquid crystal display module; and a light boiling mold, and, relative to the liquid crystal display module, comprising at least one light source for generating a light; a light guide plate comprising - a light incident surface generated by the light source, providing at least the light incident;

a light exiting surface, partially extending; and a first end, a second end portion, a reflecting surface of the light incident surface, extending from a portion of the light incident surface, wherein the light exiting surface has a first exit a first exit surface that extends from the first end portion of the light incident surface and has a first angle with the light incident surface,

The second exit surface extends from the first exit surface and is substantially parallel to the reflective surface; and a frame comprising: a first side frame adjacent to the at least one light source; the first bottom frame from the first side a third end portion of the frame extends; the top frame extends from a fourth end portion of the first side frame and is substantially parallel to the first wire, and the first frame, the first bottom frame and the first The top frame is formed together with a receiving space for accommodating the at least one light source and the light guide plate; [s] 31 201122671 at least two optical films disposed on the second light emitting surface of the light guide plate; and a light shielding portion, The method is disposed on one side of the at least two optical films and between the at least two optical films and the first exit surface. The liquid crystal display device of claim 77, wherein the light shielding portion is a single piece. The liquid crystal display device of claim 77, wherein the light shielding portion is a block. 80. The liquid crystal display device of claim 77, further comprising an anti-reflection layer disposed in an area of the first bottom frame, the area comprising the first side frame connected to the first side frame Up to 5 centimeters from the junction on the first bottom frame. The liquid crystal display device of claim 80, wherein the anti-reflective layer is composed of a low reflection material or a diffuse reflection material. The liquid crystal display device of claim 81, wherein the antireflection layer is a dark ink printed layer. The liquid crystal display device of claim 81, wherein the antireflection layer is a dark ink coating layer. The liquid crystal display device of claim 81, wherein the antireflection layer is an atomization treatment layer. The liquid crystal display device of claim 77, wherein the anti-reflective layer is a dark layer integrally formed with the first bottom frame. 86. The liquid crystal display device of claim 77, wherein the first angle is between 0 degrees and 90 degrees.

[s] 33