1270723 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種背光模組以及使用該背光模組之液晶顯示 裝置。 【先前技術】 隨著數位科技的發展，液晶顯示產品已廣泛地應用在日常生 活的各個層面中’對液晶顯示（Liquid Crystal Display, LCD)螢幕 •鲁的晝質要求也逐步提高。但是液晶本身不會發光，需要有光源不 斷提供光線射入顯示屏幕，方可實現晝面顯示，在液晶顯示產品 中，通常選擇背光模組來提供光線。 其中一種先前技術所揭示之背光模組如第一圖所示，該背光 ’ 模組1包括一光源10、一反射片11、一導光板12、一擴散片13及一 稜鏡片14 〇 該導光板12係一截面呈矩形之平板，具有一入光面121、一底 I面122及一出光面123，該入光面121係一側面，該光源10鄰近該入 光面121設置，該底面122及該出光面123相對平行，該反射片11相 對該底面122設置，在該出光面123外侧設置該擴散片13，該擴散 片13外側設置該稜鏡片14。自光源10發出之光線傳輸至導光板12 後，經多次反射後，傳輸至擴散片13及該稜鏡片14，部份自導光 板12底面122洩出之光線經由該反射片11反射回該導光板12。 在該背光模組1中，採用該背光模組1之電子產品的顯示主要 依賴於背光模組1，該光源10的耗電量在背光模組1中占較大比 • 1270723 •重，且更換該光源10相當困難。 【發明内容】 有鑒於上述内容，有必要提供一種背光模組及使用該背光模 組之液晶顯示裝置，減少光源耗電量且光源能夠即時更新。 種實施方式所揭露之背光模組，其包括：一具入光面之導 光板，-用以將環境光線匯集至導光板之集光裝置，該集光裝置 祕近該V光板之入光面設置，該集光裝置包括一光線射入端、一 .鲁光線射出端、-透鏡組及一反射鏡片，環境光線從光線射入端進 ' 入，經過透鏡組後射向該反射鏡片，經過反射鏡片反射後，從光 - 線射出端射出，射向導光板之入光面。 ， 同時提供一種使用上述實施方式所揭露背光模組的液晶顯示 裝置，其包括：一液晶顯示面板及一背光模組，該液晶顯示面板 與該背光模組疊置在一起。該背光模組包括一具入光面之導光板 及一用以將環境光線聚集至導光板之集光裝置，該集光裝置鄰近 該導光板之入光面設置，該集光裝置包括一光線射入端、一光線 射出端、一透鏡組及一反射鏡片，環境光線從光線射入端進入， 經過透鏡組後射向該反射鏡片，經過反射鏡片反射後，從光線射 出端射出，射向導光板之入光面。 相較於先前技術，上述背光模組及使用該背光模組之液晶顯 示裝置採用一集光裝置聚集環境光來提供光線，減少光源發光消 耗的電量。 1270723 , 另，採用可自由裝卸式光源，當光源損壞時，可即時更換光源， 不會因為光源損壞而影響整個顯示裝置，降低了成本；而且可以 根據環境光線的強弱來選擇是否使用光源，使得上述背光模組及 採用該背光模組之液晶顯示裝置之應用更廣泛。 【實施方式】 請參閱第二圖，係第一實施方式所揭示之液晶顯示裝置立體 分解示意圖。該液晶顯示裝置2包括一液晶顯示面板2〇及一背光模 組22 ’其中該液晶顯不面板2〇設置於該背光模組22上，光線自背 、 光模組22射出後進入該液晶顯示面板20。 -該背光模組22包括一集光裝置220、一反射片221、一導光板 222、一擴散片223及一稜鏡片224。上述各元件自反射片221至稜 鏡片224依次重疊放置，疊放順序為：反射片221、導光板222、擴 散片223及稜鏡片224。該集光裝置220鄰近該導光板222侧面設置。 再請參閱第三圖，係該液晶顯示裝置2截面示意圖。其中該導 •光板222係一透明樹脂平板，具有一入光面225、一底面226及一出 光面227。該入光面225與該底面226相鄰，該底面226與該出光面 227係一組相對面，靠近該反射片221平面為底面226，靠近該擴散 片223平面為出光面227 ;該集光裝置220靠近該入光面225設置。 該集光裝置220係一外接式透鏡系統，可以聚集環境光線，其 包括一光線射入端228及一光線射出端229。該集光裝置22〇進一步 包括一透鏡組2201、一反射鏡2202及一反射罩2203，該透鏡組2201 7 1270723 靠近該光線射入端228設置，該反射鏡2202靠近該光線射入端229 設置，該反射罩2203包覆該透鏡組2201及反射鏡2202。 該集光裝置220將環境光線聚集後傳輸至導光板222之入光面 225。光線在該集光裝置220内傳輸路徑為：環境光線自該光線射 入端228射入該集光裝置220，光線經過該透鏡組2201後，使得光 線集中，修正光線傳輸方向，光線強度增加；然後射向該反射鏡 2202，改變光線傳輸方向，獲得一光束，該光束自該集光裝置22〇 籲之光線射出端229射向該導光板222之入光面225。 為減少集光裝置220内光線外洩，該反射罩2203包覆在該聚光 透鏡2201及該反射鏡2202周圍，該反射罩2203内壁塗覆有一具反 射功能之材質。 環境光經傳輸至該導光板222之入光面225，並自該入光面225 進入導光板222後，經多次反射後，自該導光板222之出光面227射 出’形成一面光源，同時光線進入液晶顯示面板20。 • 當然，也可以在集光裝置220内設置多個反射鏡2202，經該聚 光透鏡2201後之光線同時射向該多個反射鏡2202，獲得多條光 束’該多條光束同時射向導光板222之入光面225，相當於形成多 個點光源。 該環境光可以為太陽光，亦可以為照明燈發出的光。 採用該集光裝置220取代先前技術的發光二極體或者冷陰極 螢光官，可以利用環境光照亮液晶顯示面板2〇，在環境光充足的 1270723 ，情況下避免使用發光二極體或者冷陰極螢光管來照亮液晶顯示面 板，有效利用環境光。 再請參閱第四圖，係第二實施方式所揭示之液晶顯示裝置3結 構截面不意圖，該液晶顯示裝置3同樣包括一液晶顯示面板3〇和一 背光模組32，惟，與上述實施方式所揭示之液晶顯示裝置2區別之 處有兩點：首先該背光模組32還包括一光源3〇〇，該光源3〇〇靠近 該導光板322之入光面325設置，且該光源300還可以沿垂直於該入 鲁光面325方向做機械式平移；其次，且該背光模組32之集光裝置32〇 可以自由裝卸。 该光源300可以為發光二極體，或者是冷陰極螢光管。當環境 光充足時，可以移動該光源3〇〇，使得光源3〇〇與入光面325之間留 出一容置空間，然後將該集光裝置32〇安裝至該容置空間，該集光 裝置320同樣包括一透鏡組32〇1和一反射鏡32〇2，另還有一具反射 功能之反射罩3203包覆在該聚光透鏡3201及該反射鏡32〇2周圍， 泰藉由該集光裝置320將環境光聚集後，傳輸至該導光板322之入光 面325，以形成一可作為面光源的背光模組32來供應光線照亮液晶 顯示面板30。 另外，在該實施方式中，背光模組32之光源300還可以為一可 裝卸式光源，當拆除光源300後，將該集光裝置32〇安裝在該光源 300所在位置，用該集光裝置320取代該光源300，提供光線給背光 模組32以照亮該液晶顯示面板3〇。 1270723 .在該實施方式中，當環境光線充足時，可以用集光裝置320聚 集環境光取代光源3GG，聽使肖絲3GG照亮液雜示面板30， 減少光源300耗電量；另將光源3〇〇設計為可裝卸式，還可以使光 源300的即時更換，更方便。 再請參閱第五圖，係第三實施方式所揭示之液晶顯示裝置截 面不意圖。該實施方式同樣包括一背光模組42及一液晶顯示面板 40 ’其中與第-實施方式不同之處在於1背光模組42還包括一 Φ光源400及-光源罩430，該光源罩收容該光源4〇〇，該光源4〇〇 及該光源罩430設置在該集光裝置42〇之先線射入端似8處。該集光 裝置420之光線射出端429固接在該導光板422之入光面425侧。 該光源400及該光源罩43〇可以自由裝卸’當環境光線不充足 時，安裝該光源400及該統罩43〇，通過該光源4〇〇發出光線藉由 該集光裝置420傳輸至導光板422。當環境光線充足時 ’拆掉該光 源400及該杨罩430，該集光裝置42〇直接聚集環境絲至導光板 •422。 當然該光源400還可以相對該集光裝置42〇之光線射入端428 作機械式平移。當環境光線充足時，相對該光線射人端428移動該 光源400 ’使得該集光裝置42〇同時聚集光源4〇〇以及環境光線來照 亮顯示面板40。 纟上述實施对巾，絲_可以自由裝卸，#環境光線充足 時’用集光裝置42〇直接聚集環境光，當環境光線不足時，聚集 1270723 光源400之光線照冗液日日顯不面板40 ’減少背光模纟且a中光、原 400耗電量，節約了電能；將光源400設計為可裝卸式，也可以實 現光源300的即時更換，節約成本。 综上所述’本發明符合發明專利要件，爰依法提出專利申請。 惟，以上所述者僅為本發明之較佳實施方式，本發明之範圍並不 、述實式為限’舉凡錢、本案技藝之人士，在援依本案發 鲁月精神所作之等效修飾或變化，皆應包含於以下巾料利範圍内。 11 1270723 【圖式簡單說明】 第一圖係一種先前技術之液晶顯不裝置剖面不意圖。 第二圖係第一實施方式所揭示之液晶顯示裝置立體示意圖。 第三圖係第二圖所示之液晶顯示裝置剖面示意圖。 第四圖係第二實施方式所揭示之液晶顯示裝置剖面示意圖。 第五圖係第三實施方式所揭示之液晶顯示裝置剖面示意圖。 【主要元件符號說明】 液晶顯示裝置 2、3、4 擴散片 223 液晶顯示面板 20、30、40 稜鏡片 224 背光模组 22、32、42 入光面 225、325、425 集光裳置 220、320、420 底面 226 反射片 221 出光面 227 導光板 222、322、422 光線射入端 228、428 透鏡級 2201 、 3201 光線射出端 229、429 反射鏡 反射罩 2202、3202 2203 、 3203 光源 300、400 121270723 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a liquid crystal display device using the same. [Prior Art] With the development of digital technology, liquid crystal display products have been widely used in all aspects of daily life. 'Liquid Crystal Display (LCD) screens • Lu's enamel requirements have gradually increased. However, the liquid crystal itself does not emit light, and a light source is required to continuously provide light to the display screen to realize the kneading display. In the liquid crystal display product, a backlight module is usually selected to provide light. The backlight module disclosed in the prior art is as shown in the first figure. The backlight module 1 includes a light source 10, a reflective sheet 11, a light guide plate 12, a diffusion sheet 13 and a cymbal sheet 14. The light plate 12 is a flat plate having a rectangular cross section, and has a light incident surface 121, a bottom I surface 122, and a light exit surface 123. The light incident surface 121 is a side surface. The light source 10 is disposed adjacent to the light incident surface 121. 122 and the light-emitting surface 123 are relatively parallel, and the reflection sheet 11 is disposed opposite to the bottom surface 122. The diffusion sheet 13 is disposed outside the light-emitting surface 123, and the cymbal sheet 14 is disposed outside the diffusion sheet 13. After the light emitted from the light source 10 is transmitted to the light guide plate 12, after being reflected multiple times, it is transmitted to the diffusion sheet 13 and the cymbal sheet 14. The light leaked from the bottom surface 122 of the light guide plate 12 is reflected back to the light through the reflection sheet 11. Light guide plate 12. In the backlight module 1 , the display of the electronic product using the backlight module 1 mainly depends on the backlight module 1 , and the power consumption of the light source 10 accounts for a larger ratio in the backlight module 1 • 1270723 • It is quite difficult to replace the light source 10. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a backlight module and a liquid crystal display device using the same, which can reduce the power consumption of the light source and can update the light source in real time. The backlight module disclosed in the embodiment includes: a light guide plate having a light incident surface, and a light collecting device for collecting ambient light to the light guide plate, wherein the light collecting device is close to the light incident surface of the V light plate The light collecting device comprises a light incident end, a lu light emitting end, a lens group and a reflecting lens. The ambient light enters from the light incident end, passes through the lens group, and then is directed to the reflective lens. After being reflected by the reflective lens, it is emitted from the light-line exit end and is incident on the light incident surface of the light guide plate. And a liquid crystal display device using the backlight module disclosed in the above embodiment, comprising: a liquid crystal display panel and a backlight module, the liquid crystal display panel being overlapped with the backlight module. The backlight module includes a light guide plate having a light incident surface and a light collecting device for collecting ambient light to the light guide plate. The light collecting device is disposed adjacent to the light incident surface of the light guide plate, and the light collecting device includes a light. The incident end, a light emitting end, a lens group and a reflecting lens, the ambient light enters from the light incident end, passes through the lens group and is directed to the reflecting lens, is reflected by the reflecting lens, and is emitted from the light emitting end, and the light guide The light board is in the light side. Compared with the prior art, the backlight module and the liquid crystal display device using the same use a light collecting device to collect ambient light to provide light, thereby reducing the amount of power consumed by the light source. 1270723 , In addition, the freely detachable light source can replace the light source when the light source is damaged, and the entire display device will not be affected by the damage of the light source, thereby reducing the cost; and whether the light source can be selected according to the intensity of the ambient light, The backlight module and the liquid crystal display device using the same are more widely used. [Embodiment] Please refer to the second drawing, which is a perspective exploded view of a liquid crystal display device disclosed in the first embodiment. The liquid crystal display device 2 includes a liquid crystal display panel 2 and a backlight module 22 ′. The liquid crystal display panel 2 is disposed on the backlight module 22 , and the light enters the liquid crystal display after being emitted from the back and the optical module 22 . Panel 20. The backlight module 22 includes a light collecting device 220, a reflective sheet 221, a light guide plate 222, a diffusion sheet 223, and a gusset 224. Each of the above elements is placed in this order from the reflection sheet 221 to the prism lens 224, and the stacking order is a reflection sheet 221, a light guide plate 222, a diffusion sheet 223, and a gusset 224. The light collecting device 220 is disposed adjacent to a side of the light guide plate 222. Referring to the third figure, a schematic cross-sectional view of the liquid crystal display device 2 is shown. The light guide plate 222 is a transparent resin plate having a light incident surface 225, a bottom surface 226 and a light exit surface 227. The light-incident surface 225 is adjacent to the bottom surface 226. The bottom surface 226 and the light-emitting surface 227 are opposite to each other. The plane of the reflection sheet 221 is a bottom surface 226, and the plane of the diffusion sheet 223 is a light-emitting surface 227. The device 220 is disposed adjacent to the light incident surface 225. The light collecting device 220 is an external lens system that collects ambient light, and includes a light incident end 228 and a light emitting end 229. The light collecting device 22 further includes a lens group 2201, a mirror 2202, and a reflector 2203. The lens group 2201 7 1270723 is disposed adjacent to the light incident end 228. The mirror 2202 is disposed adjacent to the light incident end 229. The reflector 2203 covers the lens group 2201 and the mirror 2202. The light collecting device 220 collects ambient light and transmits it to the light incident surface 225 of the light guide plate 222. The light transmission path in the light collecting device 220 is: ambient light is incident on the light collecting device 220 from the light incident end 228, and the light passes through the lens group 2201 to concentrate the light, correct the light transmission direction, and increase the light intensity; Then, the light is transmitted to the mirror 2202 to change the light transmission direction, and a light beam is obtained. The light beam is emitted from the light-emitting end 229 of the light collecting device 22 toward the light-incident surface 225 of the light guide plate 222. In order to reduce the leakage of light in the light collecting device 220, the reflecting cover 2203 is wrapped around the collecting lens 2201 and the reflecting mirror 2202. The inner wall of the reflecting cover 2203 is coated with a material having a reflecting function. The ambient light is transmitted to the light incident surface 225 of the light guide plate 222, and after entering the light guide plate 222 from the light incident surface 225, after multiple reflections, the light exit surface 227 of the light guide plate 222 is emitted to form a light source. Light enters the liquid crystal display panel 20. • Of course, a plurality of mirrors 2202 may be disposed in the light collecting device 220, and the light rays passing through the collecting lens 2201 are simultaneously incident on the plurality of mirrors 2202 to obtain a plurality of light beams. The entrance surface 225 of 222 is equivalent to forming a plurality of point light sources. The ambient light can be either sunlight or light from a luminaire. By using the light collecting device 220 instead of the prior art light emitting diode or cold cathode fluorescent light, the liquid crystal display panel 2 can be illuminated by ambient light, and in the case of 1270723 with sufficient ambient light, the use of the light emitting diode or the cold is avoided. A cathode fluorescent tube illuminates the liquid crystal display panel to effectively utilize ambient light. Referring to the fourth embodiment, the liquid crystal display device 3 disclosed in the second embodiment is not intended to be in cross section. The liquid crystal display device 3 also includes a liquid crystal display panel 3 and a backlight module 32. The liquid crystal display device 2 has two differences. First, the backlight module 32 further includes a light source 3〇〇 disposed adjacent to the light incident surface 325 of the light guide plate 322, and the light source 300 is further disposed. The mechanical translation can be performed in a direction perpendicular to the entrance surface 325. Secondly, the light collection device 32 of the backlight module 32 can be freely loaded and unloaded. The light source 300 can be a light emitting diode or a cold cathode fluorescent tube. When the ambient light is sufficient, the light source 3〇〇 can be moved to leave an accommodating space between the light source 3〇〇 and the light incident surface 325, and then the light collecting device 32〇 is mounted to the accommodating space, the set The light device 320 also includes a lens group 32〇1 and a mirror 32〇2, and a reflective reflector 3203 is coated around the collecting lens 3201 and the mirror 32〇2. The concentrating device 320 collects the ambient light and transmits it to the light incident surface 325 of the light guide plate 322 to form a backlight module 32 that can serve as a surface light source to supply light to illuminate the liquid crystal display panel 30. In addition, in this embodiment, the light source 300 of the backlight module 32 can also be a detachable light source. After the light source 300 is removed, the light collecting device 32 is mounted at the position of the light source 300, and the light collecting device is used. The light source 300 is replaced by 320, and light is supplied to the backlight module 32 to illuminate the liquid crystal display panel 3. 1270723. In this embodiment, when the ambient light is sufficient, the ambient light can be collected by the light collecting device 320 instead of the light source 3GG, and the chord 3GG can be illuminated to illuminate the liquid crystal display panel 30, thereby reducing the power consumption of the light source 300; The 3〇〇 is designed to be removable, and the instant replacement of the light source 300 can be made more convenient. Referring to Fig. 5 again, the cross section of the liquid crystal display device disclosed in the third embodiment is not intended. The embodiment also includes a backlight module 42 and a liquid crystal display panel 40'. The difference from the first embodiment is that the backlight module 42 further includes a Φ light source 400 and a light source cover 430, and the light source cover houses the light source. 4〇〇, the light source 4〇〇 and the light source cover 430 are disposed at 8 positions of the first line entrance end of the light collecting device 42〇. The light emitting end 429 of the light collecting device 420 is fixed to the light incident surface 425 side of the light guiding plate 422. The light source 400 and the light source cover 43 are freely detachable. When the ambient light is insufficient, the light source 400 and the cover 43 are mounted, and the light is emitted through the light source 4 to be transmitted to the light guide through the light collecting device 420. 422. When the ambient light is sufficient, the light source 400 and the poplar cover 430 are removed, and the light collecting means 42 directly collects the ambient filament to the light guide plate 422. Of course, the light source 400 can also be mechanically translated relative to the light incident end 428 of the light collecting device 42. When the ambient light is sufficient, the light source 400' is moved relative to the light incident end 428 such that the light collecting means 42 simultaneously collects the light source 4 and the ambient light to illuminate the display panel 40.纟The above implementation of the towel, silk _ can be freely loaded and unloaded, # ambient light is sufficient 'light collecting device 42 〇 directly gather ambient light, when the ambient light is insufficient, gather 1270723 light source 400 light illuminate daylight display panel 40 'Reducing the backlight mode and a medium light, the original 400 power consumption, saving energy; the light source 400 is designed to be removable, and the light source 300 can be replaced immediately, saving cost. In summary, the invention conforms to the patent requirements of the invention, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the fact that the person who is the subject of the skill of the present invention is equivalent to the spirit of Lu Yue in the case of the aid of the present invention. Modifications or changes should be included in the following range of benefits. 11 1270723 [Simple description of the drawings] The first figure is a schematic view of a liquid crystal display device of the prior art. The second drawing is a perspective view of a liquid crystal display device disclosed in the first embodiment. The third figure is a schematic cross-sectional view of the liquid crystal display device shown in the second figure. The fourth drawing is a schematic cross-sectional view of a liquid crystal display device disclosed in the second embodiment. Fig. 5 is a schematic cross-sectional view showing a liquid crystal display device disclosed in the third embodiment. [Main component symbol description] Liquid crystal display device 2, 3, 4 diffusion sheet 223 liquid crystal display panel 20, 30, 40 224 piece 222 backlight module 22, 32, 42 light-incident surface 225, 325, 425 320, 420 bottom surface 226 reflective sheet 221 light emitting surface 227 light guide plate 222, 322, 422 light incident end 228, 428 lens level 2201, 3201 light emitting end 229, 429 mirror reflecting cover 2202, 3202 2203, 3203 light source 300, 400 12