M319427 八、新型說明： \ 【新型所屬之技術領域】 本創作係有關一種直下式背光，模組改良，尤指是有關 一種可使用、較少光源並可消除擴散板二旁側的昏暗帶 區，有效解決習用直下式背光模組明顯呈現明、暗帶區之 直下式背光模組改良。 ^ 【先前技術】 • 如第一圖所示，係為一般液晶顯示器所習用之直下式 月光模組結構剖視圖，整體背光模組之結構組成係由内向 外依序配設有一背板1 1、若干光源以及擴散板1 3 ;其 中，各光源可為直條狀或U型或其他連續折、彎形狀之燈管 12並以適當之間距舖設在背板11與擴散板13之間， 並固疋於背板1 1上，其液晶模組之顯示效果即由各燈管 1 2散出之光線所構成。 唯，該燈管1 2係以適當之固定間距舖設在背板工工 籲 與擴散板1 3之間，故其所提供之光線以各燈管1 2上方 _ 為最亮之區段，燈管1 2與燈管1 2間之光線為次亮之區 段，而背板1 1兩旁側之區段則為最暗之區段，形成液晶 模組明、暗帶區較為明顯之現象。 【新型内容】 本創作之主要目的，在於提供一種直下式背光模組改 良，尤指是有關一種可使用較少光源並可消除擴散板二旁 側的昏暗帶區，有效解決習用直下式背光模組明顯呈現 5 M319427 明、暗帶區之直下式背光模組改良。 有鑑於此，本創作之直下式背光模組係設有若干光源 以及擴散板，各光源之光線由擴散板之下方射入，以將光 線均勻擴散射出擴散板之板面；其>，藉由各光源與擴散 板之距離變化，以及各光源間之距離係與擴散板之距離略 呈反比，亦即靠近擴散板處之光源排列密度較低，而遠離 ' 擴散板處之光源排列密度較高，藉以消除擴散板二旁側的 * 昏暗帶區。 » 【實施方式】 為能使貴審查委員清楚本創作之結構組成，以及整 體運作方式，茲配合圖式說明如下： 本創作之直下式背光模組改良，其整體直下式背光模 組之基本結構組成如第二圖所示，係由内向外依序配設有 一背板2 1、若干光源以及擴散板2 3 ;其中，各光源可 為直條狀或U型或其他連續折彎形狀之燈管舖設在背板2 | 1與擴散板2 3之間，各燈管之光線由擴散板2 3之下方 射入，以將光線均勻擴散射出擴散板2 3之板面。 * 其重點在於··各燈管與擴散板間係具有第一間距，而 各燈管間係具有第二間距，該第一間距係由擴散板中間處 朝兩側漸減，其第二間距則由擴散板中間處朝兩側漸增， 如圖所示之實施例中，其係設有六個燈管分別為第一、二、 三、四、五、六燈管221、222、223、224、 2 2 5、2 2 6，各燈管係設置於背板2 1上，該背板2 1與擴散板2 3間係具有第三間距，其第三間距係由擴散 板2 3中間處朝兩側漸減（C1<C2<C3)，而背板2 1上則 6 M319427 設置有燈管，使各燈管與擴散板2 3間具有之第一間距 別為、A2、A3、A4、A5、A6，請同時參閱第三圖所示， 且A1 = A6<A2 = A5<A3 = A4，而各燈管間具有之第二間距 为f為B卜B2、B3、B4、B5，請同’時參閱第四、圖所示，且 B1 = B5>B2 = B4>B3，使各燈管間之距離係與擴散板2 3 之距離略呈反比，亦即靠近擴散板2 3處之燈管排列密产 較低，而遠離擴散板2 3處之燈管排列密度較高，藉以^ 除擴散板2 3二旁側的昏暗帶區，如第五圖所示，有效解 決習用直下式背光模組明顯呈現明、暗帶區之課題，並可 減少燈管之數量，同樣可以達到相同之亮度；當然，該背 板2 1可以如第二圖所示為階梯狀之結構體，亦可以^第 六圖所示，其背板2 1係為弧狀之結構體，而弧狀之開口 向上，或者如第七圖所示，其背板2 i係為v型之結構體， 而V型之開口向上。 如第八圖所示為本創作之另一實施例，各光源與擴散 板間之第一間距係由擴散板中間處朝兩側漸增，而各光源 間之第二間距則由擴散板中間處朝兩側漸減，如圖所示之 實施例中，其係設有六個燈管分別為第一、二、三、四、 五、六、七燈管221、222、223、224、22 5、2 2 6、2 2 7，各燈管係設置於背板2 1上，該背 板2 1與擴散板2 3間係具有第三間距，其第三間距係由 擴散板2 3中間處朝兩側漸減（ci>C2>C3)，而背板2 1 上則設置有燈管，使各燈管與擴散板2 3間具有之第一間 距係同樣由擴散板2 3中間處朝兩側漸減，而各燈管間具 有之第二間距分別為B1、B2、B3、B4、B5、B6，請同時參 閱第九圖所示，且B1 = B6<B2 = B5<B3 = B4，使各燈管間 M319427 之距離係與擴散板2 3之距離略呈反比，亦即靠近擴散板 2 3處之燈管排列密度較低，而遠離擴散板2 3處之燈管 排列密度較高，藉以消除擴散板2 3二旁側的昏暗帶區， 同樣可以解決習用直下式背光模組'明顯呈現明、暗帶區之 課題；當然，該背板2 1可以如第八圖所示為階梯狀之結 構體，亦可以如第十圖所示，其背板2 1係為弧狀之結構 ' 體，而弧狀之開口向下；或者如第十一圖所示，其背板2 1係為倒V型之結構體，而V型之開口向下。 > 再者，各燈管下方亦可設置有反射片2 4，如第十二 圖所示，而該反射片2 4亦可依照各燈管之設置方式成 型，亦即該反射片2 4與擴散板2 3間係具有第四間距， 其第四間距係由擴散板2 3中間處朝兩側漸減（Dl < D2 < D3)，或者如第十三圖所示，其第四間距係由擴散板2 3中 間處朝兩側漸減（D1>D2>D3);當然該反射片亦可以如上 述背板不同形狀之結構體。 如上所述，本創作提供另一較佳可行之直下式背光模 丨 組改良，確以符合新型專利條件，爰依法提呈新型專利之 • 申請；惟，以上之實施說明及圖式所示，僅為本創作較佳 - 實施例之一者，並非用以此侷限本創作，是以，舉凡熟悉 本創作技藝之人士，依本創作之精神所作之與本發明之構 造、裝置、特徵等近似、雷同者，均應屬本創作之創設目 的及申請專利範圍之内。 8 M319427 【圖式簡單說明】 第一圖係為習用背光模組之結構剖視圖。 第二至四圖係為本創作第一實施例中背板與各光源之結構 剖視圖。 第五圖係為本創作直下式背光模組中光源表現之示意圖。 第六圖係為本創作第二實施例中背板與各光源之結構剖視 圖。 第七圖係為本創作第三實施例中背板與各光源之結構剖視 圖。 第八至九圖係為本創作第四實施例中背板與各光源之結構 剖視圖。 第十圖係為本創作第五實施例中背板與各光源之結構剖視 圖。 第十一圖係為本創作第六實施例中背板與各光源之結構剖 視圖。 第十二圖係為本創作第一實施例中反射片與各光源之結構 剖視圖。 第十三圖係為本創作第二實施例中反射片與各光源之結構 剖視圖。 9 M319427 【元件代表符號說明】 背板11 燈管1 2 擴散板1 3 光學膜片14 液晶面板1 5 背板2 1 第一燈管2 2 1 第二燈管2 2 2 第三燈管2 2 3 第四燈管2 2 4 第五燈管2 2 5 第六燈管2 2 6 第七燈管2 2 7 擴散板2 3 反射片2 4M319427 VIII, new description: \ [New technology field] This creation is related to a direct type backlight, module improvement, especially related to a dim zone that can be used, less light source and can eliminate the side of the diffuser It effectively solves the improvement of the direct-type backlight module which obviously displays the bright and dark zone of the backlight module. ^ [Prior Art] • As shown in the first figure, it is a cross-sectional view of a direct-lit moonlight module used in a general liquid crystal display. The structure of the overall backlight module is sequentially provided with a back plate 1 from the inside to the outside. a plurality of light sources and a diffusing plate 13; wherein each of the light sources may be a straight strip or a U-shaped or other continuous folded or curved shaped tube 12 and laid between the backing plate 11 and the diffusing plate 13 at an appropriate distance, and solidified The display effect of the liquid crystal module is formed by the light emitted from each of the lamps 12 on the back plate 11. Only the lamp tube 12 is laid between the backboard worker and the diffuser plate 13 at a proper fixed interval, so that the light provided is the brightest section above the lamp tube 1 2, the lamp The light between the tube 1 2 and the tube 1 2 is the second brightest section, and the section on the side of the back panel 1 1 is the darkest section, which is a phenomenon in which the bright and dark regions of the liquid crystal module are more obvious. [New content] The main purpose of this creation is to provide a direct-type backlight module improvement, especially for a dim zone that can use fewer light sources and eliminate the two sides of the diffusion plate, effectively solving the conventional direct-type backlight mode. The group clearly showed the improvement of the direct-lit backlight module of the 5 M319427 bright and dark zone. In view of this, the direct backlight module of the present invention is provided with a plurality of light sources and a diffusing plate, and the light of each light source is incident from the lower side of the diffusing plate to uniformly diffuse the light to the surface of the diffusing plate; The distance between each light source and the diffusing plate varies, and the distance between the light sources is slightly inversely proportional to the distance between the diffusing plates, that is, the light source arrangement density near the diffusing plate is lower, and the light source arrangement density away from the diffusing plate is higher. High, to eliminate the * dim zone on the side of the diffuser. » [Implementation] In order to enable your review committee to understand the structure of the creation and the overall operation mode, the following is a description of the following: The direct backlight module of this creation is improved, and the basic structure of the overall direct backlight module The composition is as shown in the second figure, which is provided with a back plate 2 1 , a plurality of light sources and a diffusing plate 2 3 from the inside to the outside; wherein each light source can be a straight strip or U-shaped or other continuous curved shape lamp The tube is laid between the back plate 2 | 1 and the diffusion plate 23, and the light of each tube is incident from below the diffusion plate 23 to uniformly diffuse the light out of the plate surface of the diffusion plate 23. * The key point is that there is a first spacing between the tubes and the diffuser, and a second spacing between the tubes, the first spacing is gradually reduced from the middle of the diffuser to the sides, and the second spacing is From the middle of the diffuser plate toward the two sides, as shown in the embodiment, the six lamps are respectively provided with first, second, third, fourth, fifth and sixth lamps 221, 222, 223, 224, 2 2 5, 2 2 6, each lamp tube system is disposed on the back plate 2 1 , the back plate 2 1 and the diffuser plate 23 have a third spacing, and the third spacing is formed by the diffusion plate 2 3 The side is gradually reduced (C1 < C2 < C3), and the back panel 2 1 is provided with a lamp tube, so that the first spacing between the lamps and the diffuser plate 23 is A2, A3, A4 , A5, A6, please also refer to the third figure, and A1 = A6 < A2 = A5 < A3 = A4, and the second spacing between the lamps is f B B2, B3, B4, B5, Please refer to the fourth and figure at the same time, and B1 = B5 > B2 = B4 > B3, so that the distance between the lamps is slightly inversely proportional to the distance of the diffusion plate 2 3 , that is, close to the diffusion plate 2 3 The lamp tube arrangement is denser than Low, and the density of the lamp tube away from the diffuser plate 2 is higher, so that the dim zone on the side of the diffuser plate 2 3 is removed, as shown in the fifth figure, effectively solving the conventional direct-lit backlight module. The problem of the dark zone and the reduction of the number of lamps can also achieve the same brightness; of course, the back plate 2 1 can be a stepped structure as shown in the second figure, or can be used as the sixth figure. It is shown that the back plate 2 1 is an arc-shaped structure, and the arc-shaped opening is upward, or as shown in the seventh figure, the back plate 2 i is a v-shaped structure, and the V-shaped opening is upward. As shown in the eighth embodiment, in another embodiment of the present invention, the first spacing between the light sources and the diffusing plate is gradually increased from the middle of the diffusing plate toward the two sides, and the second spacing between the light sources is defined by the middle of the diffusing plate. In the embodiment shown in the figure, it is provided with six lamps, which are first, second, third, fourth, fifth, sixth and seventh lamps 221, 222, 223, 224, 22 respectively. 5, 2 2 6 , 2 2 7, each lamp tube is disposed on the back plate 2 1 , the back plate 2 1 and the diffuser plate 23 have a third spacing, and the third spacing is from the middle of the diffusion plate 2 3 The side is gradually reduced to the sides (ci > C2 > C3), and the back plate 2 1 is provided with a lamp tube so that the first spacing between the lamps and the diffuser plate 23 is also from the middle of the diffusing plate 2 3 The two sides are gradually decreasing, and the second spacing between the lamps is B1, B2, B3, B4, B5, B6, respectively, please refer to the figure ninth, and B1 = B6 < B2 = B5 < B3 = B4, The distance between the lamps M319427 is slightly inversely proportional to the distance between the diffusion plates 23, that is, the arrangement density of the lamps near the diffusion plate 23 is lower, and the arrangement density of the lamps away from the diffusion plate 23 is lower. Higher, in order to eliminate the dim zone on the side of the diffusion plate 2 3 , the same problem can be solved by the conventional direct-lit backlight module 'apparently presenting the bright and dark zones; of course, the back plate 2 1 can be as shown in the eighth figure The structure shown as a step-like structure may also be as shown in the tenth figure, the back plate 2 1 is an arc-shaped structure body, and the arc-shaped opening is downward; or as shown in the eleventh figure, the back is The plate 2 1 is an inverted V-shaped structure, and the V-shaped opening is downward. < Further, a reflective sheet 24 may be disposed under each of the lamps, as shown in Fig. 12, and the reflecting sheet 24 may be formed according to the arrangement of the respective tubes, that is, the reflecting sheet 24 Between the diffusing plate 23 and the diffusing plate 23, the fourth pitch is gradually decreased from the middle of the diffusing plate 2 3 toward the two sides (Dl < D2 < D3), or as shown in the thirteenth figure, the fourth The pitch is gradually decreased from the middle of the diffusion plate 2 3 toward both sides (D1 > D2 >D3); of course, the reflection sheet may have a structure of a different shape as the above-mentioned back plate. As described above, the present invention provides another preferred and feasible direct-lit backlight module improvement, which is in accordance with the new patent conditions, and the application for a new type of patent is submitted according to the law; however, the above implementation description and the drawings show that It is only one of the preferred embodiments of the present invention, and it is not intended to limit the creation of the present invention. Therefore, those who are familiar with the creative technique are similar to the structure, device, and features of the present invention in accordance with the spirit of the present invention. And the same person, should be the creation of this creation and the scope of patent application. 8 M319427 [Simple description of the diagram] The first diagram is a structural cross-sectional view of a conventional backlight module. The second to fourth figures are cross-sectional views showing the structure of the back sheet and the respective light sources in the first embodiment of the creation. The fifth figure is a schematic diagram of the performance of the light source in the direct-lit backlight module. Fig. 6 is a cross-sectional view showing the structure of the back sheet and the respective light sources in the second embodiment of the present invention. Figure 7 is a cross-sectional view showing the structure of the back sheet and the respective light sources in the third embodiment of the present invention. The eighth to ninth drawings are cross-sectional views showing the structure of the back plate and the respective light sources in the fourth embodiment of the present invention. The tenth figure is a cross-sectional view showing the structure of the back sheet and the light sources in the fifth embodiment of the present invention. The eleventh drawing is a cross-sectional view showing the structure of the back sheet and the respective light sources in the sixth embodiment of the present invention. Fig. 12 is a cross-sectional view showing the structure of the reflecting sheet and the respective light sources in the first embodiment of the present invention. Figure 13 is a cross-sectional view showing the structure of the reflecting sheet and the respective light sources in the second embodiment of the present invention. 9 M319427 [Description of component symbols] Backplane 11 Lamp 1 2 Diffuser 1 3 Optical diaphragm 14 LCD panel 1 5 Back panel 2 1 First tube 2 2 1 Second tube 2 2 2 Third tube 2 2 3 Fourth tube 2 2 4 Fifth tube 2 2 5 Sixth tube 2 2 6 Seven tube 2 2 7 Diffusion plate 2 3 Reflector 2 4