201215969 六、發明說明： 【發明所屬之技術領域】 本4明k關於使用於液晶面板之導光板式的背光面 板，與使用於g光面板之反射板。 【先前技術】 過去’於液晶顯不裝置等中，係使用從液晶層的背面 側照出光來發光之背光面板。背光面板係採用例如於導光 板的邊緣側配置光源，將由線光源而來的光射人導光板 内，藉由導光板内部之反射等，做為面光源向導光板之前 面將光射出之導光板形式背光面板。導光板形式之背光面 板中，‘要求導光板全體之均一的輝度。 導光板形式的背光面板中，係在ΐ光板的背面側施加 點狀遮罩處理(dot mask 轉，在導光板㈣引起散射 (光擴散），使光在導光板的前面側射出。此時，在導光板的 背面側設置用來反射光的反射板。 射出至導光板的背面側的光被反射板反射回導光板内 部，且從導光板的前面側射出。從而，藉由在反射板的光 的反射，而可得到更高的輝度。 此種背光面板係例如一種背光裝置，其具有導光板、 配置於導光板之側面並朝向導光板照射光之燈具元件、及 配置於導光板後方的反射板，在與反射板相對之導光板表 面形成複數個稜鏡架(prismm〇unt)，在反射板表面，形成設 置在/、心鏡罙相對之基底膜的突起部，並形 起部之表層的反射層（專利文獻D。 又，有一種背光源用反射板，其係在沿著導光板之背 面的凹凸面而配置之反射板卜在沿著導光板之凹凸面的 4/17 201215969 反射面有多數以樹脂形成之保護點（專利文獻2)。 [先前技術文獻] [專利文獻] 專利文獻1 :曰本特開2007-258170號公報 專利文獻2 :曰本特開2002-324421號公報 【發明内容】 [發明所欲解決之課題] 在为光面板中，有使《導光板之前面射出之光(輝度) 均一化的必要。例如，形成於導光板背面之點狀圖案等， 為了均一化導光板之别面全體的出射光，在離光源近側係 鬆散地被形成，而離鈾述光源愈遠愈緊密地被形成。藉由 形成此種圖案而在導光板全體可得到大致均一的出射光(輝 度）。 另一方面，在反射板側被施加用來將與導光板之距離 保持成一定之間隔物處理。藉由在反射板的表面侧（導光板 側)均一地形成間隔物處理，使導光板和反射板的距離保持 一定，則射出至導光板背面側之光在反射板表面確實地被 反射至導光板側，而可得到沒有不均的均一輝度。 然而，若像這樣構成，則導光板之點狀遮罩圖案處理 及反射板之間隔物處理兩者都有必要，而有招致成本增加 的問題。 北又，在形成於導光板背面之點狀圖案等，有產生吸光、 使背光面板全體的輝度降低的可能性。 本發明係鑑於此種問題而完成者，以提供在確保與過 去相同之輝度均—性的同時，可達成沒有不均的均 及降低成本之背光面板等為其目的。 & 5/17 201215969 [解決問題之手段] .用於達成前述目的之第〗發明為一種背光面板，特徵 為.其係導光板形式的背光面板，並具備導光板、設置在 前述導光板背_反射板、及絲自前料光板的側端邻 入射之光源’且對與前述導光板㈣之前述反射板的表面 實施凸狀的_處理，前述_處理係離前述光源 緊密地被形成。 … 前述圖案處理係由珠粒、與用以使前述珠粒保持在前 述反射板上的塗膜所構成的珠粒塗層，且期望前述 配置密度係離前述光源愈遠愈大。 1 " 刖述圖案處理可塗布含有珠粒的塗料而形成，前述圖 案處理亦可以喷墨方式塗布含有珠粒的塗料而形成，又， 前述圖案處理亦可以網版(screen)印刷方式塗布含有珠粒的 塗料而形成。 又，覆蓋前述珠粒之前述塗膜係按照使得相鄰接的前 述珠粒彼此之間不連續的方式而形成。 若依據第1發明，因對與導光板相對之面施加凸狀的 圖案處理’故沒有必要在導光板的裡面側施加點狀遮罩處 理等。因此在製造性優良。又，因凸狀之圖案係離前述光 源愈遠愈緊密地被形成，故在導光板前面全體可得到與過 去相同地均一的輝度。 特別是圖案處理若為塗布珠粒，則作業性優良，可得 到確實地將光均一的反射之反射板。又，塗布珠粒可以凹 版印刷等塗布含有珠粒的塗料，亦可以喷墨方式塗布含有 珠粒的塗料而形成，亦可以網版印刷方式塗布含有珠粒的 塗料。無論是哪個情形，只要是依據離光源之距離來調整 6/17 201215969 珠粒的密度即可。 前述珠粒彼此之間塗膜係按照使得相鄰接的 的使用量而削減成本外「亦:切成’則除了可抑制塗料 而使反射效率提升之效果有㈣減少魏光之塗膜面積 弟2發明為_種背光面 可使用於導光編彡柄之蘭板，特徵為：其係 設置在前述基材上之由之反雜，並具備基材、 述反射板上之塗膜所構心4 Μ將喊珠粒保持在前 穷奸斤構成的珠粒塗層，且前述珠粒的配置 山度係由刚述基板的—側往另—側變大。 右依據第2發明’則可組合使用不須特殊處理之導光 板’並可得到能獲得均—輝度之背光面板用的反射板。 [發明之效果] 依據本U可提供確保與以往相同的輝度均一性， 且可達成降低成本的背光面板等。 【實施方式】 [實施發明之形態] 、以下一面參照圖式一面說明本發明之實施形態。圖工 為顯不使祕液晶齡裝置等之背光面板丨之圖。背光面 板1為所謂導光板形式之背光面板。主要以導紐3、反射 板5、光源9等構成。 線光源之光源9係配置在導光板3的側部(邊緣），被圖 式省略之反光鏡等包圍，光源可使用例如LED(發光二極 體）、CCFL(冷陰極螢光燈管）' EEFL(外部陰極螢光燈管）、 HCFL(熱陰極螢光燈管)等。 導光板3為平板狀，光的出射面(在圖1的上面側，配 7/17 201215969 置有省略圖式之液晶面板之側)係構成為平滑狀。於導光板 3的背面側(與反射板5相對之面側)可施加如過去之點狀遮 罩處理等，但在本發明中，為了加工成本或提昇輝度，期 望使用導光板3之背面側為原本的平滑狀能者。 導光板3可使用（甲基)丙烯酸醋樹脂、聚碳酸酉旨樹脂、 石央玻璃等。考慮到吸光度越低則折射率越低以及材料成 本等，期望採用（甲基)丙烯酸酯樹脂。 反射板：> 係在基材6上施加間隔物處理7而形成。間 隔物處，7係將導光板3與反射板5之相對面的彼此距離 保持岐’在反射板5表面上有效率地將光反射至導光板3 側。對間隔物處理7詳述於後。 ^板5(基材6)可為具擴散性者何為具鏡面性者， =考慮輝度的均-性，較期望為擴散性的反射板5(基材 的反射板5(基材6)可使用樹脂拉伸薄膜、微細 U反射㈣，敏使収射率較高之微細發泡反射板。 又，反射板可使用厚度數十降數咖左右者，但並非以 此為限。 由光源9所發出的紐經由反射鏡等射人至導光板3 ΞΙ導3 __轉歧3㈣反射’ 3的背面側射出之光線被反射鏡反射，在導光201215969 VI. Description of the Invention: [Technical Field] The present invention relates to a light guide plate type backlight panel used for a liquid crystal panel, and a reflector used for a g-light panel. [Prior Art] In the past, in a liquid crystal display device or the like, a backlight panel that emits light from the back side of the liquid crystal layer to emit light is used. In the backlight panel, for example, a light source is disposed on the edge side of the light guide plate, and the light from the line light source is incident on the light guide plate, and the light guide plate is used as a light guide plate to guide the light from the front surface of the light guide plate by reflection inside the light guide plate. Form backlight panel. In the backlight panel in the form of a light guide plate, ‘the uniform brightness of the entire light guide plate is required. In the backlight panel in the form of a light guide plate, a dot mask process is applied to the back side of the calender plate (dot mask rotation, scattering (light diffusion) is caused in the light guide plate (4), and light is emitted on the front side of the light guide plate. A reflecting plate for reflecting light is disposed on the back side of the light guiding plate. Light emitted to the back side of the light guiding plate is reflected back to the inside of the light guiding plate by the reflecting plate, and is emitted from the front side of the light guiding plate. Thus, by the reflecting plate Such a backlight panel is, for example, a backlight device having a light guide plate, a lamp element disposed on a side surface of the light guide plate and illuminating the light guide plate, and a rear side of the light guide plate. The reflector has a plurality of trusses formed on the surface of the light guide plate opposite to the reflector, and a protrusion formed on the surface of the reflector opposite to the base film is formed on the surface of the reflector, and the shaped portion is formed. The reflective layer of the surface layer (Patent Document D. Further, there is a reflector for a backlight, which is disposed on the uneven surface along the back surface of the light guide plate, and is disposed on the uneven surface along the light guide plate 4/17 201 215969 There are many protective points formed of a resin on the reflecting surface (Patent Document 2). [Prior Art Document] [Patent Document] Patent Document 1: JP-A-2007-258170 Patent Document 2: 曰本特开2002-324421 [Brief Description of the Invention] [Problems to be Solved by the Invention] In the light panel, it is necessary to uniformize the light (luminance) emitted from the front surface of the light guide plate. For example, a dot pattern formed on the back surface of the light guide plate or the like In order to uniformize the entire outgoing light of the other side of the light guide plate, it is formed loosely on the near side of the light source, and is formed more closely from the uranium light source. By forming such a pattern, the entire light guide plate can be formed. A substantially uniform emission light (luminance) is obtained. On the other hand, a spacer for applying a distance from the light guide plate is applied to the side of the reflection plate, and is uniform on the surface side (light guide plate side) of the reflection plate. When the spacer is processed to keep the distance between the light guide plate and the reflector constant, the light emitted to the back side of the light guide plate is surely reflected on the surface of the light guide plate to the side of the light guide plate, and uniform light without unevenness can be obtained. However, if it is configured as described above, both the dot mask pattern processing of the light guide plate and the spacer processing of the reflector are necessary, and there is a problem that the cost is increased. In the north, it is formed on the back surface of the light guide plate. A dot pattern or the like may cause light absorption to reduce the luminance of the entire backlight panel. The present invention has been made in view of such a problem, and it is possible to provide the same brightness uniformity as in the past. The same is true for the purpose of reducing the cost of the backlight panel, etc. & 5/17 201215969 [Means for Solving the Problem] The invention for achieving the above object is a backlight panel characterized in that it is in the form of a light guide plate. a backlight panel, comprising: a light guide plate, a light source disposed on the back side of the light guide plate, and a light source incident from the side end of the front light guide plate; and arranging the surface of the reflection plate of the light guide plate (4) The aforementioned processing is closely formed from the aforementioned light source. The patterning treatment is a bead coating composed of beads and a coating film for holding the beads on the reflecting plate, and it is desirable that the arrangement density is larger as the distance from the light source is larger. 1 " The pattern processing can be formed by coating a coating containing beads, and the patterning treatment can also be formed by applying a coating containing beads, and the pattern processing can also be applied by screen printing. Formed by the coating of the beads. Further, the coating film covering the beads is formed such that the adjacent beads are not continuous with each other. According to the first aspect of the invention, since the convex pattern treatment is applied to the surface facing the light guide plate, it is not necessary to apply a dot mask treatment or the like to the back side of the light guide plate. Therefore, it is excellent in manufacturability. Further, since the convex pattern is formed more closely from the light source, the luminance in the same manner as in the past can be obtained in the entire front surface of the light guide plate. In particular, when the patterning treatment is to coat the beads, the workability is excellent, and a reflecting plate that reliably reflects the light uniformly can be obtained. Further, the coated beads may be coated with a bead-containing coating material by gravure printing or the like, or may be formed by applying a coating material containing beads, or may be applied by screen printing. In either case, the density of the 6/17 201215969 beads can be adjusted according to the distance from the light source. The coating film between the beads is reduced in cost according to the amount of use of the adjacent ones. "Also: cutting into" can improve the reflection efficiency in addition to suppressing the coating material. (4) reducing the coating area of Weiguang. The backlight plate can be used as a blue plate for a light guiding braiding handle, characterized in that it is disposed on the substrate and is provided with a base material and a coating film on the reflecting plate. The 喊 喊 喊 喊 保持 保持 保持 保持 保持 保持 保持 保持 保持 保持 保持 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠 珠A reflector for a backlight panel which can obtain uniform brightness can be obtained by using a light guide plate which does not require special treatment. [Effect of the Invention] According to this U, it is possible to provide the same luminance uniformity as in the prior art, and it is possible to achieve cost reduction. [Embodiment] [Embodiment of the Invention] The embodiment of the present invention will be described below with reference to the drawings. The drawing is a diagram showing a backlight panel such as a liquid crystal age device. Light guide plate form The backlight panel is mainly composed of a guide 3, a reflector 5, a light source 9, etc. The light source 9 of the line source is disposed at a side (edge) of the light guide plate 3, surrounded by a mirror or the like omitted, and the light source can be used, for example. LED (light emitting diode), CCFL (cold cathode fluorescent tube) 'EEFL (external cathode fluorescent tube), HCFL (hot cathode fluorescent tube), etc. Light guide plate 3 is flat, light exit surface (on the upper side of Fig. 1, 7/17 201215969 is provided with the side of the liquid crystal panel with the drawings omitted), and is configured to be smooth. On the back side of the light guide plate 3 (the side facing the reflector 5), for example, In the present invention, in order to process the cost or to increase the luminance, it is desirable to use the back side of the light guide plate 3 as the original smoothness. The light guide plate 3 can be made of (meth)acrylic resin. In particular, it is desirable to use a (meth) acrylate resin in view of the lower the absorbance, the lower the refractive index, the material cost, etc. Reflector: > Apply a space on the substrate 6 Formed by the material treatment 7. At the spacer, the 7-series will be used to guide the light guide plate 3 The distance between the opposite faces of the plate 5 is kept 岐' efficiently reflects light on the surface of the reflecting plate 5 to the side of the light guiding plate 3. The spacer processing 7 is described in detail later. ^ The plate 5 (substrate 6) may be If the diffuser is a mirror-like one, consider the uniformity of the luminance, and the diffuser is more desirable. The reflective sheet 5 (substrate 6) of the substrate can be a resin stretched film or a fine U-reflection. (4) A micro-foamed reflector with a high rate of absorption. Further, the reflector can be used with a thickness of several tens of drops, but not limited thereto. The light emitted by the light source 9 is injected through a mirror or the like. Light from the person to the light guide 3 ΞΙ 3 __ 转 3 3 (four) reflection '3' on the back side of the light is reflected by the mirror, in the light guide
Hr面作為面光源而射出。此時，由反射板5所反射 光物處理7等而擴散’擴散的程度依據離 略均一的輝度。 在導九板3的則面侧可得到大 井可得到此種效果之間隔物處理7。圖2為導 Λ反射板5之邊界部附近的放大示賴，圖2⑷為圖 8/17 201215969 1之A部附近(近光源9側)的放大圖，圖刷為圖丨之 附近(離開光源9而接近令間）的放大圖，圖2(c)為圖】之^ 部附近(遠離光源9側)的放大圖。 間隔物處理7係由用來將珠粒u與珠粒u保持在基 材6之k膜13等所構成。珠粒u為大致顆粒形狀以 塗膜】3覆蓋表面時’藉著塗膜13而黏著在基材6之表面。 珠粒11具有大致相_粒徑，並具異於空氣巾的光的折射 率之折射率。X，村在反雜5(紐6)表社 看，J望為上述之塗布珠粒。 又，珠粒u的材質可使用合成樹脂、玻璃等。例如可 :二甲、玻璃、彻脂、讓、聚碳 使彈性體系-酸 便用又，珠粒11的直徑以3〜ΙΟΟμηχ為佳。 在ΙΟΟμηι以上時，除了背光板變厚以 厚用以固定珠粒之塗& *要產生七 使反射效率降低。：因的光吸收率而 μηι以下時，得不到 <，，、去抑制晝面的輝度不均。 令顧二Ϊ膜13的材質可使用例如酚樹脂、醇酸樹脂、三 氧樹脂、聚氨叫糊脂、氯化橡 月?、、樹脂、（甲基)丙稀酸醋樹脂、氯乙稀樹 ϊ等::來r:r旨等，但由透 ’特別以使用聚氨酿丙烯_脂較佳。 施以圖=表二之間隔物處理7係^ 以隨著離^ Q卩，絲散部之珠粒11的配置密度係施 呔者離先源9之距離而變化之圖案。 9/17 201215969 〜如圖2⑻所示，在接近光源9側，珠粒II彼此之間P =(亦即额散敎珠粒n的密度小），圖2(b)、及1 奴者遇離光源9之距離’以珠^彼此間的間隔窄（亦即( 雜U的密度大)之方式形成。此處，從光源側開 始k化珠粒的配置密度，例如，在光源9側的珠粒密 10個/cm2之情形’係在相反側以使珠粒密度達1〇〇個^ 個還多)/Gm2的方式進行。又，珠粒在_紙祕度方向係 形成大致相同密度。 從導光板3的背面側向反射板5側射出之光線係在珠 粒11 =表面或内部擴散’反射至導光板3側。此時，在珠 粒11也度小的光源9側擴散變少，珠粒u之密度隨著袁 離光源9而變大。因此’在珠粒n密度更大之遠離光源1 側，更會產生光的擴散，而使該部位朝向導光板3的正面 側之出射光變強。因此，抑制遠離光源9所造成之輝度下 降，不管離光源9之距離，可得到輝度一定之面光源广 圖3為顯示間隔物處理7之其它實施形態之圖，與圖2 同樣為導光板3與反射板5之邊界部附近的放大示意圖。 又，圖3(a)為圖1之A部附近(近光源9側)的放大圖，圖 3(b)為圖1之B部附近(離開光源9接近中間）的放大圖，圖 3(c)為圖1之C部附近(遠離光源9側)的放大圖。 如圖3所示，塗膜13並非以跨過彼此相鄰之各珠粒u 之方式形成，而是對各珠粒Π施以塗膜13。從而，在未配 置珠粒11的部位形成有塗膜13的中空部。亦即，可如圖2 所示，以跨過彼此相鄰之珠粒u之方式連續形成塗膜13， 亦可如圖3所示，形成塗膜13之中空部。 又，本發明之間隔物處理7(塗布珠粒)只要將包含珠粒 10/Π 201215969 之塗料以各種印刷手法塗布在基材上即可。例如，可以凹 版印刷等塗布來形成，亦可將包含珠粒之塗料以喷墨方式 塗布形成，亦可將包含珠粒之塗料以網版印刷方式塗布形 成。如圖3所示’若考慮到要形成塗膜13的中空部，並抑 制塗材之’肖耗量，則期望為依據網版印刷或喷墨印刷之方 式，但非限定於此。在此情形，若考慮到量產性、加工成 本等’期望為網版印刷，若考慮到小批生產、大面積化， 則期望為噴墨方式。作為印刷方法，例如在為網版印刷之 情形’係加大印刷版之網目或孔的一邊開口，以使珠粒易 於離開的方式增加珠粒密度即可。以噴墨方式來進行的塗 布係隨著從頭開始之印刷點狀圖案之間距越來越小來增加 珠粒密度即可。 依據本發明，因已於間隔物處理7施加用於使輝度均 一化之圖案，而可不對導光板3側施加圖案處理，並得到 均一的輝度。又，若對導光板3施加點狀遮罩處理，則在 遮罩處理部便會產生吸光，而使導光板3全體之輝度降低， 但在本發明中因導光板3之背面平滑，不會產生此種吸光， 而可提升全體輝度。 又’導光板3因可使用兩面均平滑者，而不需要對導 光板3作點狀遮罩處理等，可減少製造成本。以下顯示實 施利，但非限定。 [實施例] 準備以東洋紡績公司製之AR650MX(粒徑40μιη)、住 友大阪水泥公司製之FD-R01、與丙二醇單丙醚所構成之塗 料。接著，以網版印刷機(Sakurai Graphic Systems公司製） 之吸台（suction table)作為反射板，設置古河電氣工業製 201215969 MCPET。使用具相點空關案之知咖印刷版，使用 網版印刷機印刷前述塗料，其後，藉由乾燥、熱硬化，形 成塗膜厚度在有珠粒之部分為4〇〜5〇μηι、沒有珠粒之部分 為約5〜1()卿的珠粒塗布膜。珠粒之密度為10〜15wt%。 對本案發明之背光面板】進行評價。圖4係評價中所 使用之月光面板1的示意圖。又，以下的圖中，以D顯示 光源側E顯不遇離光源倒，發揮與前述結構相同機能之結 構係以與圖1〜圖3相同的符號來標示。省略重複之說明。 又，本發明不限定於以下實施例。 名略圖式之背光單元係使^ samsung 視：型號 UN40B5500VF。 圖5〜圖8為顯示比較例之背光面板ia'沁、lc、^之 2相對於背光面板1，圖5所示之背光面板化係間隔物 :理7之珠粒η的密度不隨離光源9之距離改變(不具圖 案），大致均一地施以間隔物處理而成。 s又，相對於背光面板1，圖6所示之背光面板lb係間 隔:處理7之珠粒11的密度不隨離光源9之距離改變(不具 圖案），大致均一地施以間隔物處理而成。而且，同樣在導 光板3之背面側形成點狀遮罩15。圖中以凹部所示之點狀 遮罩15係藉網版印刷施以白色顏料。又，背光面板lb中， 點狀遮罩15同樣不取決於離光源之距離，均一地形成。 此、又，相對於背光面板1，圖7所示之背光面板1()係與 ^光面板lb同樣地在導光板3的背面側形成有點狀遮罩 15，點狀遮罩15係不取決於離光源之距離，大致均—地形 成。又，間隔物處理7係與背光面板丨同樣地，對應離^ 源之距離而予以圖案處理來形成。 一 12/17 201215969 又，相對於背光面板l，圖8所示之 背光面板lb I«絲導歧3㈣面卿 15,背光面板Id中，點狀遮罩ls係以離 ^罩 遮罩處理之密度越高的方式形成。又，間隔物處理7之遠珠 粒11的密度不隨離光源9之距離變化(不且 I之珠 一地施以間隔物處理。亦即，背光面板為過去之 板The Hr surface is emitted as a surface light source. At this time, the degree of diffusion & diffusion by the light-reflecting treatment 7 or the like reflected by the reflecting plate 5 is based on the slightly uniform luminance. A spacer treatment 7 in which a large well can obtain such an effect can be obtained on the face side of the guide plate 3. 2 is an enlarged view of the vicinity of the boundary portion of the ruthenium reflector 5, and FIG. 2(4) is an enlarged view of the vicinity of the A portion (near the light source 9 side) of FIG. 8/17 201215969 1 , and the brush is near the ( (away from the light source) 9(c) is an enlarged view of the vicinity of the order, and Fig. 2(c) is an enlarged view of the vicinity of the portion (away from the side of the light source 9). The spacer treatment 7 is composed of a k film 13 or the like for holding the beads u and the beads u on the substrate 6. The bead u is in a substantially granular shape to be adhered to the surface of the substrate 6 by the coating film 13 when the coating film 3 covers the surface. The beads 11 have a refractive index which is substantially the same as the particle diameter and which is different from the refractive index of the light of the air towel. X, the village is in the anti-hybrid 5 (New 6) table, and J is the coated beads described above. Further, as the material of the bead u, a synthetic resin, glass, or the like can be used. For example, it may be: dimethyl, glass, gelatin, let, polycarbon to make the elastic system-acid use, and the diameter of the bead 11 is preferably 3~ΙΟΟμηχ. In the case of ΙΟΟμηι or more, in addition to the thickening of the backlight plate to thicken the coating of the beads & * to produce seven to reduce the reflection efficiency. : When the light absorption rate is less than or equal to μηι, the luminance unevenness of the kneading surface is not obtained. For the material of the Guji film 13, for example, a phenol resin, an alkyd resin, a trioxy resin, a polyurethane paste, a chlorinated rubber, a resin, a (meth) acryl resin, or a vinyl chloride can be used. Tree shrews, etc.:: r: r is intended, but it is preferable to use PTFE to make propylene. According to the spacer = Table 2, the spacer 7 is processed. The distribution density of the beads 11 of the filament portion is changed according to the distance from the source 9 as the distance from the Q. 9/17 201215969 ~ As shown in Fig. 2 (8), near the light source 9 side, the beads II are P = (that is, the density of the amount of beads n is small), Figure 2 (b), and 1 slave encounter The distance 'from the light source 9' is formed such that the distance between the beads is narrow (that is, the density of the hetero-U is large). Here, the arrangement density of the k-beads from the light source side is, for example, on the side of the light source 9. The case where the beads are densely packed in 10 cm/cm 2 is carried out in such a manner that the density is on the opposite side so that the bead density is more than one or more. Further, the beads form substantially the same density in the direction of the paper secret. The light emitted from the back side of the light guide plate 3 toward the side of the reflecting plate 5 is reflected on the side of the bead 11 = surface or inside and is reflected to the side of the light guide plate 3. At this time, the diffusion on the side of the light source 9 where the beads 11 are also small is small, and the density of the beads u becomes larger as the Yuan is separated from the light source 9. Therefore, when the density of the beads n is larger away from the light source 1, the light is more diffused, and the emitted light toward the front side of the light guide plate 3 becomes stronger. Therefore, the reduction in luminance caused by the distance from the light source 9 is suppressed, and the surface light source having a constant luminance can be obtained regardless of the distance from the light source 9. FIG. 3 is a view showing another embodiment of the display spacer processing 7, and the light guide plate 3 is the same as FIG. An enlarged schematic view of the vicinity of the boundary portion with the reflecting plate 5. 3(a) is an enlarged view of the vicinity of the portion A of FIG. 1 (near the light source 9 side), and FIG. 3(b) is an enlarged view of the vicinity of the portion B of FIG. 1 (near the light source 9 is in the middle), FIG. 3 ( c) is an enlarged view of the vicinity of the C portion of Fig. 1 (away from the side of the light source 9). As shown in FIG. 3, the coating film 13 is not formed so as to straddle the beads u adjacent to each other, but the coating film 13 is applied to each of the beads. Therefore, a hollow portion of the coating film 13 is formed at a portion where the beads 11 are not disposed. That is, as shown in Fig. 2, the coating film 13 may be continuously formed so as to straddle the beads u adjacent to each other, or as shown in Fig. 3, the hollow portion of the coating film 13 may be formed. Further, the spacer treatment 7 (coated beads) of the present invention may be applied to a substrate by various printing methods using a coating material containing beads 10/Π 201215969. For example, it may be formed by coating such as gravure printing, or the coating material containing beads may be formed by inkjet coating, or the coating material containing beads may be applied by screen printing. As shown in Fig. 3, in view of the fact that the hollow portion of the coating film 13 is to be formed and the amount of the coating material is suppressed, it is desirably based on screen printing or inkjet printing, but is not limited thereto. In this case, in consideration of mass production, processing cost, etc., it is desirable to use screen printing, and in consideration of small batch production and large area, it is desirable to use an ink jet method. As the printing method, for example, in the case of screen printing, the side of the screen or the opening of the printing plate is enlarged to increase the bead density so that the beads are easily separated. The coating by the ink jet method increases the bead density as the distance between the printed dot patterns from the beginning becomes smaller. According to the present invention, since the pattern for uniformizing the luminance is applied to the spacer processing 7, the patterning treatment can be applied to the side of the light guide plate 3, and a uniform luminance can be obtained. Further, when the dot mask treatment is applied to the light guide plate 3, light absorption occurs in the mask processing portion, and the luminance of the entire light guide plate 3 is lowered. However, in the present invention, the back surface of the light guide plate 3 is smooth and does not occur. This kind of light absorption is produced, and the overall brightness can be improved. Further, the light guide plate 3 can be used for both sides, and it is not necessary to perform a dot mask treatment on the light guide plate 3, etc., and the manufacturing cost can be reduced. The following shows the implementation, but not limited. [Examples] A coating comprising AR650MX (particle size 40 μm) manufactured by Toyobo Co., Ltd., FD-R01 manufactured by Sumitomo Osaka Cement Co., Ltd., and propylene glycol monopropyl ether was prepared. Next, a suction table of a screen printing machine (manufactured by Sakurai Graphic Systems Co., Ltd.) was used as a reflecting plate, and Furukawa Electric Industrial Co., Ltd. 201215969 MCPET was installed. The above-mentioned paint is printed using a screen printing machine using a screen printing machine, and thereafter, by drying and heat hardening, the thickness of the coating film is formed in the portion having beads of 4 〇 5 5 〇 μ η, The part of the bead is a bead coated film of about 5 to 1 (). The density of the beads is 10 to 15% by weight. The backlight panel of the present invention was evaluated. Fig. 4 is a schematic view of the moonlight panel 1 used in the evaluation. Further, in the following drawings, the light source side E is displayed as the light source side E, and the structure having the same function as the above-described structure is denoted by the same reference numerals as those in Figs. 1 to 3 . The description of the repetition is omitted. Further, the present invention is not limited to the following embodiments. The backlight unit of the name pattern makes ^ samsung view: model UN40B5500VF. 5 to FIG. 8 are diagrams showing the backlight panels ia'沁, lc, and 2 of the comparative example with respect to the backlight panel 1. The backlight panel spacers shown in FIG. 5 are not separated by the density of the beads η. The distance of the light source 9 is changed (no pattern), and the spacer is processed substantially uniformly. In addition, with respect to the backlight panel 1, the backlight panel 1b shown in FIG. 6 is spaced apart: the density of the beads 11 of the process 7 does not change with the distance from the light source 9 (no pattern), and the spacer treatment is performed substantially uniformly. to make. Further, a dot mask 15 is also formed on the back side of the light guide plate 3. In the figure, the dot mask 15 shown by the concave portion is applied with a white pigment by screen printing. Further, in the backlight panel 1b, the dot mask 15 is also uniformly formed without depending on the distance from the light source. Further, with respect to the backlight panel 1, the backlight panel 1 (shown in FIG. 7) forms a dot-shaped mask 15 on the back side of the light guide plate 3 in the same manner as the light-emitting panel 1b, and the dot-shaped mask 15 does not depend on At a distance from the light source, it is formed substantially uniformly. Further, the spacer processing 7 is formed by patterning in accordance with the distance from the source, similarly to the backlight panel. A 12/17 201215969 Moreover, with respect to the backlight panel 1, the backlight panel lb I « silk guide 3 (four) face 15 shown in Fig. 8, in the backlight panel Id, the dot mask ls is treated by the mask mask The higher the density is formed. Further, the density of the beads 11 of the spacer treatment 7 does not vary with the distance from the light source 9 (not the beads of I are treated with spacers. That is, the backlight panel is the past board.
對以上之各背光面板，評價導弁杯 AFor each of the above backlight panels, evaluate the guide cup A
與輝度之均一性。關於輝度，使用K:ca:::輝J 8C4A_425_W(廣練頭），以測定距離心來測定書面中心； 84x45cm之_的平均輝度。以目視評價輝度之-4 (實施例1) ^ 本發明之背光面板i中，導光板3 (335〇C-2)，且輝度係整體大致均一（目視）。㈣度阿 (比較例1) 一另-方^背光面板㈣，導光板3前面的平 ==6Ged/m ) ’但輝度隨著遠離光源而變低，輝度不ς (比較例2) 2 板化中，導光板3前面的平均輝产敕雕 (3180cd/m2)，且輝声p左荽、土 十〕輝度i肢低 視） X蚣者通離光源而變低，輝度不均—（目 (比較例3) 板中，導光板3前面的平均輝度雖整I# 低(騰偷），但輝度係整體大致均-（目視)體 (比較例4) 13/17 201215969 月光面板Id中，導光板3前面的平均輝度雖整體 低(3130cd/m2)，但輝度係整體大致均一（目視）。 如以上所述，本發明之背光面板i沒有必要在導光板3 的平面側施加鮮處理，因已在過去之_物處理側施加 了將輝度均-化之随處理，而可確保高輝度與均一性。 〃、上雖奋面參知、附加圖式一面說明本發明之實施 升1 ’但本發明之技術範圍不受前述實施形態所操控。應 I解，若為本技術領域之業者，鴨可想耽載於專利申 ㈣圍之技術思想的範圍内之各種變形例或修正例，其當 然亦屬於本發明之技術範圍。 田 例如’在前述之實施形態中雖然顯示了在間隔物處理 之各點分別包含一顆珠粒的範例，但亦可如圖9所示之背 光面板le於各點包含複數顆珠粒。 【圖式簡單說明】 圖1為顯示背光面板1之構成的示意圖。 圖2為顯示導歧3與反射板5的邊界部附近之圖，⑷ 為圖1之A部放大圖、（b)為圖1之6部放大圖、⑹為圖ι 〜圖3為顯示在導光板3與反射板5之邊界部附近的 ^施㈣之圖，⑻為圖i之A部放大圖、⑼為圖】之 部放大圖、（c)為圖丨之（：部放大圖。 圖4為顯示本發明之背絲板丨之導光板3與反射板 的邊界部附近之圖。 圖5為顯示比較例之背光面板la之導光板3與反 5的邊界部附近之圖。 圖6為顯示比較例之背光面板比之導光板3與反射板 14/17 201215969 5的邊界部附近之圖。 圖7為顯示比較例之背光面 5的邊界部附近之圖。 e之導光板3與反射板 圖8為顯示過去例子之背光面板^ 板5的邊界部附近之圖。 —先板，、反射 圖9為顯示背光面板1之導光板3與反射板5的邊界 部附近之其它形態之圖。 【主要元件符號說明】 l、la、lb、lc、ld、le 背光板 3導光板 5反光板 6基材 7間隔物處理 9光源 Π 珠教 13塗骐 15 點狀遮罩 15/17Uniformity with luminance. Regarding the luminance, K:ca:::Glow J 8C4A_425_W (Guanglian Head) was used to measure the distance center to determine the written center; the average luminance of 84×45 cm. The brightness was evaluated visually-4 (Example 1) ^ In the backlight panel i of the present invention, the light guide plate 3 (335 〇 C-2) was used, and the entire luminance system was substantially uniform (visual). (4) Degrees (Comparative Example 1) One-side-backlight panel (4), flat in front of the light guide plate 3 ==6Ged/m) 'But the brightness becomes lower as it goes away from the light source, and the brightness is not good (Comparative Example 2) 2 boards In the middle of the light guide plate 3, the average glow of the light guide plate 3 (3180cd/m2), and the glow sound p left, the soil ten] the brightness of the limbs low vision) X turns away from the light source, the brightness is uneven - ( (Comparative Example 3) In the plate, the average luminance in front of the light guide plate 3 is low (I sneak), but the luminance is generally uniform - (visual) (Comparative Example 4) 13/17 201215969 Moonlight panel Id Although the average luminance of the front surface of the light guide plate 3 is low overall (3130 cd/m 2 ), the luminance is generally uniform (visual) as a whole. As described above, the backlight panel i of the present invention does not need to be freshly processed on the plane side of the light guide plate 3 . Since the processing of the luminance is uniformized in the past, the high luminance and uniformity can be ensured, and the implementation of the present invention is enhanced by the fact that the above-mentioned aspects of the invention are enhanced. 'But the technical scope of the present invention is not controlled by the foregoing embodiments. It should be solved by I, if the industry is a manufacturer, the duck can think of it. Various modifications and corrections within the scope of the technical idea of the patent application (4) are of course also within the technical scope of the present invention. Fields such as 'in the foregoing embodiments, respectively, show that each point in the spacer processing is An example of a bead is included, but the backlight panel shown in FIG. 9 may include a plurality of beads at each point. [Schematic Description] FIG. 1 is a schematic view showing the configuration of the backlight panel 1. A view showing a vicinity of a boundary portion between the guide 3 and the reflector 5, (4) is an enlarged view of a portion A of FIG. 1, (b) is an enlarged view of a portion of FIG. 1, and (6) is a diagram showing that the light guide plate 3 is shown in FIG. (4) is a magnified view of the portion A of Fig. i, (9) is an enlarged view of the portion of Fig. i, and (c) is a magnified view of the portion (Fig. 4 is an enlarged view of the portion). Fig. 5 is a view showing the vicinity of the boundary portion between the light guide plate 3 and the reverse 5 of the backlight panel 1a of the comparative example. Fig. 6 is a view showing the vicinity of the boundary portion between the light guide plate 3 and the reflection plate of the back sheet of the present invention. The backlight panel of the comparative example is compared with the vicinity of the boundary portion between the light guide plate 3 and the reflection plate 14/17 201215969 5. Fig. 7 is a view showing the vicinity of the boundary portion of the backlight surface 5 of the comparative example. The light guide plate 3 and the reflection plate of Fig. 8 are views showing the vicinity of the boundary portion of the backlight panel 5 of the past example. - First plate, reflection Fig. 9 is a view showing another form of the vicinity of the boundary portion between the light guide plate 3 and the reflection plate 5 of the backlight panel 1. [Description of main components] l, la, lb, lc, ld, le backlight panel 3 light guide plate 5 reflector 6 substrate 7 spacer treatment 9 light source 珠 bead teach 13 骐 15 point mask 15/17