^22902 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於液晶顯示果w 【先前技術】 β歧料光模組。 由於液晶顯示裝置具有輕薄、耗雷Φ、— ^ 應用於筆記本電腦、移動電話、數位相機、心，射，優點，廣泛 近年來隨著液晶顯示技術之不斷發展及人Τ °司，等電子設横 裝置之輝度均-性提出了更高^^及人們之需求，對液晶顯系 一種先前技術背光模組如第一圖所示， 一導光板10、-光源11、-光源罩12 a 极組議包拉 1〇包括-入光面14、-出光面該導光Ϊ 射面，該反射片13設置於該底面16 一側，=^面16係< 光板10之入光面14 -側之光源罩12内，先源U设置於該導 -薄S : 以下缺陷’其一:由於導光板10為 溥板相對於先源11之直徑，導光板1〇狹窄之入 而先源罩12反射一次才可進入導光板丨〇,造成 11發出光之效率較低；其二：該光源η發出 柳―定角度人射導光板ig之光線會直接自鄰 π &之出光面15出射，形成亮點，從而導致該背光模組 100之輝度不均~。 有巧於^ ’提供—種光齡效率高，出光輝度均—之導光板 及背光模組實為必需。 【發明内容】 本發明之目的在於提供一種光耦合效率高，出光輝度均一之 導光板。 本發明之另一目的在於提供一種採用上述導光板之背光模 對應於上述目的，本發明提供一種導光板，該導光板包括一 基板二角稜鏡及一柱形透鏡’該基板包括一出光面及一底面， 該底面與該出光面相對設置，該三角稜鏡與該基板相連且與該基 端一體成型，該三角稜鏡包括第一反射面、第二反射二 於光入射一侧的稜鏡面，該柱形透鏡突出設置於該三角稜鏡之稜 鏡面上且與該三角稜鏡一體成型，光線經該柱形透鏡後被該第一 反射面、第二反射面反射後進入該基板。 對應於上述目的，本發明又提供一種背光模組，該背光模組 包括「導光板及一光源，該導光板包括一基板、一三角稜鏡及一 柱=透鏡，該基板包括一出光面及一底面，該底面與該出光面相 ，設置，該三角稜鏡與該基板相連且與該基板一端一體成型，該 二角稜鏡包括第一反射面、第二反射面和位於光入射一側的稜g 面，該柱形透鏡突出設置於該三角稜鏡之稜鏡面上且與該三角稜 鏡一體成型，該光源發出之光線經該柱形透鏡後被該第一反 面、第二反射面反射後進入該基板。 1相較於先前技術，由於本發明之導光板之該柱形透鏡耦合面 積較大，故其光耦合效率高。本發明之導光板將光源發出之 該柱形透鏡轉換為準直光，該準直光再經該三角稜鏡進入該^ 板，在該基板内傳導，最終從出光面均一射出，使該導光板之^ 光輝度均一。 【實施方式】 凊參閱第二圖，係本發明導光板第一實施方式之立體示惫 圖。该導光板20包括一基板21、一三角稜鏡22及一柱形透鏡23， 該基板21包括-出光面211及一底面212，該底面212與該 面211相對設置，該三角稜鏡22與該基板21相連，該柱形透 23突出設置於該三角稜鏡22之一稜鏡面上。 一 s亥基板21、三角稜鏡22及柱形透鏡23係一體射出成型。該 一角稜鏡22第一側邊221之長度小於第二侧邊222之長度，且第 一側邊221及第二側邊222所在之第一稜鏡面223及第二稜鏡面 1322902 係反’第一側邊221與第二側邊222相交形成之頂角θΐ ^先，211之一 σ卩份與該頂角則相對之稜鏡面之一部份相 形亥三角棱鏡22之頂角Θ1相對之棱鏡‘ 叔20"將二二 _合面積較大，故其光耗合效率高。該導光 ，將先源發出之光線經該柱形賴;2 ίί ίΪΓί Ϊ鏡22之第一稜鏡面223及第二稜鏡2 反射在該基板21内傳導，最終通過該出光面211之光指向機 之出光輝度均= 圖。ίίΖί· t發明導光板第二實施方式之剖面示意 ，:該三紐鏡32頂㈣相對之稜鏡面上，f遠離^$ 之稜線起，向该基板31方向延伸突出設置。 請參閱第四圖，係本發明導光板第三實施方 :該導光板4〇同第-實施方式料板2G 。f = J鏡尸於該三角複鏡42頂角θ3相對之稜鏡面上在自該美 起向退離該基板41方向延伸突出設置。 /土板1 圖發明‘板第四實施方式之剖面示意 亥導先板同第一貫施方式導光板2〇之區別在於：兮：& 夂兄52第-侧邊521之長度大於第二侧邊52 、= =:=板二;二-部份相連’該 :53之齡面積較大，故其丄 發出之光雜練騎鏡53轉料將先源 鏡52入射到該基板51内，=4==== 該基板51内傳導，最終通過該出先面511之光指向機^^^ 1322902 從=光面511均-射出’使該導光板5〇之光搞合效 光 輝度均一化。 清參閱第六圖’係本發明導光板第五實施方式之剖面示意 圖。該導>光板60同第四實施方式導光板5〇之區別在於：該三角 稜鏡62第一側邊621之長度與第二側邊622之長度相等，第一側 邊621與第二側邊622相交形成之頂角θ5係直角，該頂角㈦相 對之，鏡面自該底面612之一端線起與該基板61之一部份相連。 «月參閱第七圖’係本發明背光模組第一實施方式之剖面示意 圖。5亥者光模組700包括一導光板7〇及一光源7〇1，該導光板7〇 包括=基板71、一三角稜鏡72及一柱形透鏡73，該基板71包括 一出光面711及一底面712，該底面712與該出光面7η相對設 置，該二角穩鏡72與該基板71相連，該柱形透鏡73突出設置於 該二角稜鏡72之一稜鏡面上，該光源701與該柱形透鏡73相對 設置。 該基板71、該三角稜鏡72及該柱形透鏡73係一體射出成型。 該三角稜鏡72第一侧邊721之長度小於第二侧邊722之長度，且 第一侧邊721及第二側邊722所在之二稜鏡面均係反射面，第一 側邊721與第二侧邊722相交形成之頂角Θ6係鈍角。該基板71 係一平板，該出光面711包括一光指向機構713 ’該光指向機構 713係稜鏡陣列，該底面712係一反射面。該出光面711之一部份 與該頂角Θ6相對之稜鏡面之一部份相連。該柱形透鏡73突出設 置於該三角稜鏡72之頂角Θ6相對之禮鏡面上。該底面712 —側 設置有一反射片702。該光源701係發光二極體。 該光源701最大發光角之二條邊同時與該柱形透鏡73之柱面 相切’可將光源發出之光全部耦合，故其光耦合效率高。該導光 板70將該光源701發出之光線經該柱形透鏡73轉換為準直光， 該準直光先後經該三角稜鏡72之第一側邊721及第二側邊722所 在之二禮鏡面之全反射或反射，傾斜進入該基板71，並通過該底 面712之全反射或反射在該基板71内傳導’最終通過該出光面711 1322902 之光指向機構713從該出光面711均一射出，使該導光板7〇之 光輝度均一化。從而亦可使該背光模組7〇〇之出光輝产均一化 該反射片702將從該底面712漏出之光反射回該導光^7〇，二 光利用率。 沉同 請參閱第八圖，係本發明背光模組第二實施方式之 圖。該背光模組800同第-實施方式背光模組7〇〇之區別在於了 該光源801係冷陰極螢光燈，該冷陰極螢光燈設置於一光 8 内’該光源罩803與該光源801相對之一面黏貼或塗佈有 膜804。該反射膜804可反射該光源發出之光，使 形透，83及該三角棱鏡82入射到該基板81⑺，提“利用^。 請參閱第九圖，係本發明背光模組第三實施方式之 圖:該背光模組900同第-實施方式背光模組7〇〇之區別秘了 该二角稜鏡92第一側邊921之長度大於第二側邊922之長声，、 一侧邊921與第二側邊922相交形成之頂角07係銳角，該頂又 ί對一端面起與該出光面911之一部份相 目切，可將光源發出之光全_合，綠 ii〇JT亥光源9〇1發出之光源發出之光線經該柱形透鏡93 ίί ，該準直光經該三角稜鏡92人射_基板9&，= 全反械反射在縣板91 _導，最終通過該出光 =ΐί ί ίί ^構913從出光面911均一射出’使背光模組· 本發明之導光板並不限於本實施方式所述，如該 i曰，為圓錐陣列、四鱗陣列及六角錐陣列 並不限於本實施方式所述，該反糾與導光板還可祕 利申ί上ϊ述’本發明確已符合發明專利之要件，爰依法提出專 範圍所述ί僅為本發明之較佳實施方式，本發明之 圍並不上逑貫施方式為限，舉凡熟習本案技藝之人士援依本 乾 t精神所作之等效修_化，_‘下㈣專利 【圖式簡要說明】 體示意圖 ;四圖係本發明導光板 ΐ一圖係—種先前技術背光模組之剖面示意圖。 圖 ^五圖，本發明導光板第四實施方式之剖面示意圖 f六圖係本發明導光板第五實施方式之剖面示g圖 f七圖係本發明背光模組第一實施方式之剖面示意 f八圖係本發明背光模組第二實施方式之剖面示意圖 第九圖係本發明背光模組第三實施方式之剖面示意圖 【主要元件符號說明】 背光模組 700、800、900 反射片 702 光源 701、801、901 光源罩 803 基板 21、61、71、81、91 反射膜 804 出光面 211、511、711、911 第一稜鏡面 223 光指向機構213、513、713、913 第二稜鏡面 224 導光板 20、30、40、50、60、70、80、90 三角稜鏡 22、32、42、52、62、72、82、92 柱形透鏡 23、33、43、53、63、73、83、93 底面 212、512、612、712、912 頂角 Θ 卜 Θ2、Θ3、Θ4、Θ5、Θ6、Θ7 第一侧邊 221、521、621、721、921 第二側邊 222、522、622、722、922 11[22902] IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a liquid crystal display fruit w [Prior Art] β-discrimination light module. Since the liquid crystal display device has the advantages of being thin and light, and consuming lightning Φ, - ^ is applied to notebook computers, mobile phones, digital cameras, hearts, and shots, in recent years, with the continuous development of liquid crystal display technology and the development of electronic systems, etc. The brightness uniformity of the horizontal device proposes a higher level and the needs of the people. For the liquid crystal display system, a prior art backlight module is as shown in the first figure, a light guide plate 10, a light source 11, and a light source cover 12 a pole. The light guide surface of the light-emitting surface 14 and the light-emitting surface 14 is disposed on the side of the bottom surface 16 and the surface of the light-emitting surface 14 is In the side light source cover 12, the source U is disposed on the guide-thin S: the following defects: First, since the light guide plate 10 is the diameter of the seesaw relative to the source 11, the light guide plate 1 is narrowed into the source cover. 12 reflection can enter the light guide plate 丨〇, resulting in 11 light emission efficiency is low; Second: the light source η emits a willow-angled human light guide plate ig light will directly exit the neighboring π & A bright spot is formed, resulting in uneven brightness of the backlight module 100. It is indispensable to provide a light guide plate and a backlight module with high light age and high brightness. SUMMARY OF THE INVENTION An object of the present invention is to provide a light guide plate having high light coupling efficiency and uniform light emission. Another object of the present invention is to provide a backlight module using the above-mentioned light guide plate. The present invention provides a light guide plate, which comprises a substrate and a cylindrical lens. The substrate includes a light-emitting surface. And a bottom surface opposite to the light emitting surface, the triangular ridge is connected to the substrate and integrally formed with the base end, and the triangular ridge includes a first reflecting surface and a second reflecting edge on the light incident side The mirror lens is protruded from the triangular surface of the triangular ridge and is integrally formed with the triangular ridge. The light passes through the cylindrical lens, is reflected by the first reflective surface and the second reflective surface, and enters the substrate. Corresponding to the above object, the present invention further provides a backlight module, which includes a "light guide plate and a light source, the light guide plate includes a substrate, a triangular ridge and a column = lens, the substrate includes a light emitting surface and a bottom surface, the bottom surface is disposed opposite to the light emitting surface, and the triangular cymbal is connected to the substrate and integrally formed with one end of the substrate, wherein the dihro angle includes a first reflecting surface, a second reflecting surface, and a light incident side a prismatic surface, the cylindrical lens is protruded from the triangular surface of the triangular cymbal and is integrally formed with the triangular cymbal, and the light emitted by the light source is reflected by the first reverse surface and the second reflective surface after the cylindrical lens After entering the substrate, the phase coupling lens of the light guide plate of the present invention has a high coupling efficiency because of the large coupling area of the light guide plate of the present invention. The light guide plate of the present invention converts the cylindrical lens emitted by the light source into Collimating light, the collimated light enters the board through the triangular raft, is conducted in the substrate, and is finally uniformly emitted from the light-emitting surface, so that the light-emitting brightness of the light-guiding plate is uniform. [Embodiment] 凊2 is a perspective view of a first embodiment of a light guide plate of the present invention. The light guide plate 20 includes a substrate 21, a triangular cymbal 22 and a cylindrical lens 23. The substrate 21 includes a light exit surface 211 and a bottom surface. 212, the bottom surface 212 is opposite to the surface 211, the triangular cymbal 22 is connected to the substrate 21, and the cylindrical transparent portion 23 is protrudedly disposed on one of the triangular ridges 22. The mirror 22 and the cylindrical lens 23 are integrally injection molded. The length of the first side 221 of the corner 22 is smaller than the length of the second side 222, and the first side 221 and the second side 222 are located at the first edge. The mirror surface 223 and the second surface 1322902 are opposite to each other, and the apex angle θ ΐ formed by the intersection of the first side 221 and the second side 222. First, one of the 211 σ parts is opposite to the apex angle. The apex angle of the phase-shaped triangular prism 22 is opposite to the prism 'Uncle 20" The larger the area of the two-two is, the higher the light-consuming efficiency is. The light guides the light from the first source through the column; The first side 223 and the second side 2 of the mirror 22 are reflected in the substrate 21 and finally passed. The light-emitting luminance of the light-emitting surface 211 is as shown in the figure. The cross-sectional view of the second embodiment of the light guide plate is as follows: the top of the three-lens mirror 32 is opposite to the ridge line of the ^$ Referring to the fourth embodiment, the third embodiment of the light guide plate of the present invention is the third embodiment of the light guide plate: the light guide plate 4 is the same as the first embodiment plate 2G. f = J mirror is in the triangular mirror The apex angle θ3 of the apex angle θ3 extends from the beauty to the direction away from the substrate 41. The slab 1 is shown in the section of the fourth embodiment of the invention. The difference between the light guide plate 2〇 is: 兮: & 夂 brother 52 the first side 521 is longer than the second side 52, = =: = plate two; two-part connected 'the: 53 years old larger area Therefore, the light-emitting mirror 53 of the light is emitted from the source mirror 52 into the substrate 51, =4==== the substrate 51 is conducted, and finally the light pointing device passing through the first surface 511 is ^^ ^ 1322902 From the = smooth surface 511 - injection 'to make the light of the light guide plate 5 to achieve uniform brightness. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 6 is a cross-sectional view showing a fifth embodiment of a light guide plate of the present invention. The light guide plate 60 is different from the light guide plate 5 of the fourth embodiment in that the length of the first side 621 of the triangular ridge 62 is equal to the length of the second side 622, and the first side 621 and the second side are The apex angle θ5 formed by the intersection of the sides 622 is a right angle, and the apex angle (seven) is opposite to the mirror surface from one end of the bottom surface 612 to be connected to a portion of the substrate 61. «Monthly Referring to Figure 7 is a schematic cross-sectional view of a first embodiment of a backlight module of the present invention. The illuminator module 700 includes a light guide plate 7 and a light source 7〇1, and the light guide plate 7 includes a substrate 71, a triangular cymbal 72 and a cylindrical lens 73. The substrate 71 includes a light emitting surface 711. And a bottom surface 712, the bottom surface 712 is opposite to the light-emitting surface 7n. The two-dimensional stabilizer 72 is connected to the substrate 71. The cylindrical lens 73 is protruded from one of the corners 72. 701 is disposed opposite to the cylindrical lens 73. The substrate 71, the triangular file 72, and the cylindrical lens 73 are integrally molded. The length of the first side 721 of the triangular raft 72 is smaller than the length of the second side 722, and the two sides of the first side 721 and the second side 722 are reflective surfaces, and the first side 721 and the first side The apex angle Θ6 formed by the intersection of the two side edges 722 is an obtuse angle. The substrate 71 is a flat plate, and the light-emitting surface 711 includes a light directing mechanism 713'. The light directing mechanism 713 is an array of the bottom surface 712 which is a reflecting surface. A portion of the light exit surface 711 is connected to a portion of the top surface opposite the top corner Θ6. The cylindrical lens 73 is protruded from the apex angle Θ6 of the triangular cymbal 72 opposite to the mirror surface. The bottom surface 712 is provided with a reflection sheet 702 on the side. The light source 701 is a light emitting diode. The two sides of the maximum illuminating angle of the light source 701 are simultaneously tangential to the cylindrical surface of the cylindrical lens 73. The light emitted from the light source can be all coupled, so that the optical coupling efficiency is high. The light guide plate 70 converts the light emitted by the light source 701 into collimated light through the cylindrical lens 73, and the collimated light passes through the first side 721 and the second side 722 of the triangular raft 72. The total reflection or reflection of the mirror surface is obliquely entered into the substrate 71, and is uniformly conducted in the substrate 71 through total reflection or reflection of the bottom surface 712. Finally, the light directing mechanism 713 passing through the light-emitting surface 711 1322902 is uniformly emitted from the light-emitting surface 711. The brightness of the light guide plate 7 is made uniform. Therefore, the backlight module 7 can also be made uniform. The reflection sheet 702 reflects the light leaked from the bottom surface 712 back to the light guide. Referring to the eighth embodiment, a second embodiment of the backlight module of the present invention is shown. The backlight module 800 is different from the backlight module 7 of the first embodiment in that the light source 801 is a cold cathode fluorescent lamp, and the cold cathode fluorescent lamp is disposed in a light 8 'the light source cover 803 and the light source The 801 is adhered or coated with a film 804 on one side. The reflective film 804 can reflect the light emitted by the light source to make the shape, and the triangular prism 82 is incident on the substrate 81 (7), and is used. Referring to the ninth embodiment, the backlight module of the present invention is a third embodiment. The difference between the backlight module 900 and the backlight module 7 of the first embodiment is that the length of the first side 921 of the dimple 92 is greater than the length of the second side 922, and the side 921 The apex angle 07 formed by intersecting with the second side edge 922 is an acute angle, and the top surface of the illuminating surface 911 is opposite to the end surface of the illuminating surface 911, and the light emitted by the light source can be fully combined, and the green ii 〇 JT The light emitted by the light source emitted by the light source 9〇1 passes through the cylindrical lens 93 ίί , and the collimated light passes through the triangular 稜鏡 92 human _ substrate 9 &, = full anti-reflection in the county plate 91 _ guide, finally passed The light illuminating unit 913 is uniformly emitted from the light-emitting surface 911. The light guide plate of the present invention is not limited to the embodiment, and is a cone array, a four-scale array, and a hexagonal cone. The array is not limited to the embodiment, and the anti-correction and light guide plate can also be described in detail. In accordance with the requirements of the invention patent, the scope of the invention is only a preferred embodiment of the invention, and the invention is not limited to the scope of the invention, and the person skilled in the art is assisted by the spirit of the present invention. Equivalent repair _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ BRIEF DESCRIPTION OF THE DRAWINGS FIG. 6 is a cross-sectional view showing a fifth embodiment of a light guide plate of the present invention. FIG. 7 is a cross-sectional view showing a first embodiment of a backlight module of the present invention. FIG. 9 is a cross-sectional view showing a third embodiment of the backlight module of the present invention. [Main component symbol description] Backlight module 700, 800, 900 Reflecting sheet 702 Light source 701, 801, 901 Light source cover 803 substrate 21, 61, 71, 81, 91 reflective film 804 light emitting surface 211, 511, 711, 911 first side surface 223 light pointing mechanism 213, 513, 713, 913 second side surface 224 light guide plate 20, 30 40, 50, 60, 70, 80, 90 triangular ridges 22, 32, 42, 52, 62, 72, 82, 92 cylindrical lenses 23, 33, 43, 53, 63, 73, 83, 93 bottom surface 212 512, 612, 712, 912 vertices Θ Θ 2, Θ 3, Θ 4, Θ 5, Θ 6, Θ 7 first side 221, 521, 621, 721, 921 second side 222, 522, 622, 722, 922 11