1273296 五、發明說明c〇 " " 〜 【發明所屬之技術領域】 本發明係關於一種可雙面出光之背光模組及其導光 板。 【先前技術】 ^液晶顯示模組為一種非自發光顯示裝置，其顯示主要 藉由控制外部光源所發出光束之通過或者不通過來實現， 因此而要相應之背光或者前光模組，該背光或者前光模組 可將外。卩光源所發出之光束導向顯示面板，實現顯示功 能。 請參閱第一圖，係一種先前技術背光模組。該背光模 組8包括一導光板81、一反射板82、一擴散板83、一聚光 板84、一光源85及光源罩86。該導光板81包括一入光面 811、一底面812及一出光面813。反射板82、導光板81、 擴散板83、聚光板84依順序重疊排放，光源85與光源罩86 置於導光板入光面811側。從光源85發出之光束在光源罩 86之作用下導向導光板81，該光束在導光板81及反射板“ 之作用下導向擴散板83，並在擴散板83之作用下變為均勻 散射光，散射光在聚光板84作用下聚集並導向液晶面板 (圖未示）。 請參閱第二圖與第三圖，例如該背光模組8應用於有 ^顯示屏91與外顯示屏92之雙屏行動電話9時，因其僅具 :個出光面，從而需要二個背光模組8分別為内顯；;屏91 二外顯示屏9 2提供面光源實現雙屏顯示，其會增加使用該 月光模組產品之厚度、重量及成本。1273296 V. OBJECT DESCRIPTION OF THE INVENTION c〇 """"""""""" [Prior Art] ^The liquid crystal display module is a non-self-luminous display device, and its display is mainly realized by controlling the passage or non-passing of the light beam emitted by the external light source, and accordingly, the backlight or the front light module, the backlight or The front light module can be external. The light beam emitted by the xenon source is directed to the display panel for display function. Please refer to the first figure, which is a prior art backlight module. The backlight module 8 includes a light guide plate 81, a reflection plate 82, a diffusion plate 83, a concentrating plate 84, a light source 85, and a light source cover 86. The light guide plate 81 includes a light incident surface 811, a bottom surface 812, and a light exit surface 813. The reflector 82, the light guide plate 81, the diffuser 83, and the concentrating plate 84 are sequentially discharged, and the light source 85 and the light source cover 86 are placed on the light-incident surface 811 side of the light guide plate. The light beam emitted from the light source 85 is guided by the light source cover 86 to the light guide plate 81, and the light beam is guided to the diffuser plate 83 by the light guide plate 81 and the reflection plate, and becomes uniformly scattered light by the diffusion plate 83. The scattered light is collected by the concentrating plate 84 and guided to the liquid crystal panel (not shown). Referring to the second and third figures, for example, the backlight module 8 is applied to the dual screen having the display 91 and the external display 92. When the mobile phone is 9 o'clock, since it only has one illuminating surface, the two backlight modules 8 are required to be in-line; the screen 91 and the second external display 92 provide a surface light source for dual-screen display, which increases the use of the moonlight. The thickness, weight and cost of the module product.
1273296 五、發明說明（2) 有鏗於此，提供一種可雙面出光之背光模組及其導光 板實為必需。 【發明内容】 本發明之目的在於提供一種可雙面出光之背光模組。 本發明之另一目的在於提供一種可雙面出光之導光 板0 本發明之背光模組包括：至少一光源及一導光板，其 中’該導光板具至少一入光面及相對之第一表面及第二表 面，該至少一光源相對該至少一入光面設置，該至少一入 光面用於接收光源之入射光束，該第一表面為出光面且其 上設置有微透鏡結構，該第二表面包括設置有微透鏡之出 光區域及設置有微散射結構之散射區域。 本發明之導光板包括至少一入光面及相對之第一 及第二表面，该至少一入光面接收外部之入射光束，其 中，該第一表面為出光面且其上設置有微透鏡結構，該第 二表面包括設置有微透鏡之出光區域及設置有微散射結構 之散射區域。 相較於先前技術，由於本發明之昔#伊& ?扣 $ , 柘θ l 山， 知β之月九拉組採用之導光 ^具有相對之二出光面，故一導光板可當二 该導光板應用於需雙面顯示之產品，如錐p先板用田 η 士 如雙屏行勳雷話笨 守，可節約一片導光板，從而可以減少產曹 及成本。 生口口之尽度、重里 【實施方式】 參閱第四圖與第五圖 刀別係本發明背光模組第一實1273296 V. INSTRUCTIONS (2) In view of this, it is necessary to provide a backlight module that can emit light on both sides and a light guide plate thereof. SUMMARY OF THE INVENTION It is an object of the present invention to provide a backlight module that can emit light on both sides. Another object of the present invention is to provide a light guide plate that can emit light on both sides. The backlight module of the present invention includes: at least one light source and a light guide plate, wherein the light guide plate has at least one light incident surface and a first surface opposite thereto And the second surface, the at least one light source is disposed opposite to the at least one light incident surface, the at least one light incident surface is configured to receive an incident light beam of the light source, the first surface is a light emitting surface and a microlens structure is disposed thereon The two surfaces include a light exiting region provided with a microlens and a scattering region provided with a micro-scattering structure. The light guide plate of the present invention comprises at least one light incident surface and the opposite first and second surfaces, the at least one light incident surface receiving an external incident light beam, wherein the first surface is a light emitting surface and the microlens structure is disposed thereon The second surface includes a light exiting region provided with a microlens and a scattering region provided with a micro-scattering structure. Compared with the prior art, due to the present invention, the light guide plate can be used as the guide light of the month of the month. The light guide plate is applied to products requiring double-sided display, such as the cone-p-first board, the field η, such as the double-screen line, and the slogan, which can save a piece of light guide plate, thereby reducing the cost of production and cost. The end of the mouth and the weight of the mouth [Embodiment] Referring to the fourth and fifth figures, the first embodiment of the backlight module of the present invention
1273296 五、發明說明（3) 施方式之立體圖與第一表面之平面圖。該背光模組1包括 一導光板11、一光源12及一光源罩13。其中光源12為線性 光源如冷陰極燈管（CCFL)、熱陰極燈管（1^[1〇，或為點光 源如發光二極體（LED)。導光板11包括一入光面1丨1、相對 之第一表面113及弟一表面115。第一表面113為出光面且 其上設置有具聚光作用之微透鏡結構1131，第二表面丨i 5 包括設置有微透鏡之出光區域及設置有微散射結構之散射 區域。為提高光源利用率，非出光區域及散射區域之表面 鍍有反射膜（圖未示）。光源12發出之光東從導光板之入 光面111進入，自該導光板11之第一、第二表面113及115 之微透鏡結構11 3 1及11 5 1區域射出，也有部分光束被微透 鏡結構1131及1151反射，微透鏡結構11 31及1151將該射出 光束各向第一、第二表面113及115之中心會聚，並將其導 向分別相對第一、第二表面11 3及1 1 5設置之上下液晶面板 (圖未示）。因為散射結構丨丨52之表面很粗糙，故將從入光 面111進入之光束及被微透鏡結構丨131反射之光束向各方 ，散射，形成散射光，最終從第一、第二表面丨丨3及丨丨5之 破透鏡結構1131及11 51區域射出。微散射結構11 52、微透 鏡結橼11 3 1及π 5 1均勻規則分佈，又因離光源1 2越遠光強 越弱’故微散射結構11 5 2、微透鏡結構11 3 1及11 5 1之密度 均可沿遠離光源1 2之方向逐步變密或變大，從而提高出射 光束之均勻性。微散射結構11 5 2與微透鏡結構1 1 3 1及1 1 5 1 均可根據實際需要而設計。 °月参閱第六圖及第七圖，分別係本發明背光模組第二1273296 V. Description of the Invention (3) A perspective view of the embodiment and a plan view of the first surface. The backlight module 1 includes a light guide plate 11, a light source 12, and a light source cover 13. The light source 12 is a linear light source such as a cold cathode fluorescent lamp (CCFL) or a hot cathode fluorescent tube (1^[1〇, or a point source such as a light emitting diode (LED). The light guide plate 11 includes a light incident surface 1丨1 a first surface 113 and a surface 115. The first surface 113 is a light-emitting surface and is provided with a light-collecting microlens structure 1131, and the second surface 丨i 5 includes a light-emitting region provided with a microlens and A scattering region of the micro-scattering structure is disposed. In order to improve the utilization of the light source, the surface of the non-light-emitting region and the scattering region is plated with a reflective film (not shown). The light emitted by the light source 12 enters from the light-incident surface 111 of the light guide plate. The microlens structures 11 3 1 and 11 5 1 of the first and second surfaces 113 and 115 of the light guide plate 11 are emitted, and some of the light beams are reflected by the microlens structures 1131 and 1151, and the microlens structures 11 31 and 1151 emit the same. The light beams are respectively concentrated toward the centers of the first and second surfaces 113 and 115, and are guided to the upper and lower liquid crystal panels (not shown) opposite to the first and second surfaces 11 3 and 1 1 5 respectively. The surface of 52 is very rough, so it will enter from the entrance surface 111. The light beam and the light beam reflected by the microlens structure 丨131 are scattered to all sides to form scattered light, and finally are emitted from the lens structures 1131 and 11 51 of the first and second surfaces 丨丨3 and 丨丨5. Structure 11 52, microlens crustings 11 3 1 and π 5 1 are uniformly distributed regularly, and the farther away from the light source 1 2, the weaker the intensity is, so the micro-scattering structure 11 5 2. The microlens structure 11 3 1 and 11 5 1 The density can be gradually densified or enlarged in a direction away from the light source 12, thereby improving the uniformity of the outgoing beam. The micro-scattering structure 11 5 2 and the microlens structure 1 1 3 1 and 1 1 5 1 can be according to actual needs. And the design. ° month refers to the sixth and seventh figures, respectively, the second backlight module of the present invention
1273296 五、發明說明1273296 V. Description of invention
實施方式之立體圖與左視圖。第二實施方式之背光模組3 與上述一實施方式之背光模組丨大致相同，亦包括整面為 出光面之第一表面313及部分區域為出光面之第二表面 315，其不同點在於，該背光模組3包括，二光源32及33、 二光源罩34及35、有二入光面31〇及311之導光板31。二 源32及33與二光源罩34及35分別置於導光板”之二入^面 310及311側。其可提高入射光束之均勻性。而且二入光面 310及311之表面為向遠離光源32之方向凹進之圓弧面，复 可提高入射光之使用效率。 /、 +本實施方式之背光模組3與上述第一實施方式之背光 二組1之又一 ^同點在於，在· 一實*方式之背光模组^斤 =用之¥光板u為楔形，而本實施方式之導光板31為 …Ϊ上戶f述：本發明符合發明專利要件，爰依法提出專 凡ί =太L枯Ϊ上所述者僅為本發明之較佳實施方式，舉 狄无、心本案=之人士，在援依本案發明精神所作之等效 修飾或變化’皆應包括於以下之申請專利範圍内。A perspective view and a left side view of an embodiment. The backlight module 3 of the second embodiment is substantially the same as the backlight module 上述 of the above-described embodiment, and includes a first surface 313 whose entire surface is a light-emitting surface and a second surface 315 whose partial region is a light-emitting surface, the difference being that The backlight module 3 includes two light sources 32 and 33, two light source covers 34 and 35, and a light guide plate 31 having two light incident surfaces 31 and 311. The two sources 32 and 33 and the two light source covers 34 and 35 are respectively disposed on the side of the light guide plate on the sides 310 and 311. The uniformity of the incident light beam can be improved, and the surfaces of the two light incident surfaces 310 and 311 are away from each other. The circular arc surface recessed in the direction of the light source 32 can improve the use efficiency of the incident light. /, + The backlight module 3 of the present embodiment is further integrated with the backlight group 2 of the first embodiment described above, In the case of a real-mode backlight module, the light-emitting plate u is wedge-shaped, and the light-guiding plate 31 of the present embodiment is a Ϊ 户 f : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : The above description is only a preferred embodiment of the present invention, and the equivalent modification or change made by the person in the invention according to the spirit of the present invention should be included in the following application. Within the scope of the patent.
1273296 圖式簡單說明 第一圖係一種先前技術背光模組之立體分解圖。 第二圖係一種雙屏行動電話之關閉狀立體圖。 第三圖係第二圖所示雙屏行動電話之開啟狀立體圖v。 第四圖係本發明背光模組第一實施方式之立體圖。 第五圖係本發明背光模組第一實施方式之第二表面平圖 第六圖係本發明背光模組第二實施方式之立體圖。 第七圖係本發明背光模組第二實施方式之側面圖。 【元件符號說明】 背光模組 1、31273296 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is an exploded perspective view of a prior art backlight module. The second figure is a closed perspective view of a dual-screen mobile phone. The third figure is an open view v of the dual-screen mobile phone shown in the second figure. The fourth figure is a perspective view of a first embodiment of the backlight module of the present invention. The fifth figure is a second surface plan view of the first embodiment of the backlight module of the present invention. The sixth figure is a perspective view of the second embodiment of the backlight module of the present invention. Figure 7 is a side view showing a second embodiment of the backlight module of the present invention. [Component Symbol Description] Backlight Module 1, 3
導光板 11、3 1 入光面 111、310、311 第一表面 第二表面 微透鏡結構 微散射結構 113 ^ 313 115 ^ 315 1131 、 1151 1152Light guide plate 11, 3 1 light incident surface 111, 310, 311 first surface second surface microlens structure micro scattering structure 113 ^ 313 115 ^ 315 1131 , 1151 1152
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