459212 五、發明說明（Ο [發明領域] 本發明係有關於使用於液晶顯示模組等之背照光構 造’尤其是有關於背照光外框之内，將背照光與光學薄層 形成一體化之背照光單元構造。 [習知技術] 液晶顯示面板與背照光形成一體化之液晶顯示模組之 一先例.，已揭示於特開平1 0-2829 0 0號公報。如圖3所示之 該液晶顯示模組，將金屬製下方密封盒2 1與金屬製上方密 封盒2 2之側壁内相嵌合’在圖中並未畫出鉤狀區相互結合 之盒子内，以層疊方式收納有具備光源218之導光板21 3、 擴散薄層214與已層疊三棱鏡薄層2〗5的光學薄層區24。另 外’將裝設於金屬製支撐板26下面的四個角落之間隔物突 起221架設於光學薄層區24上方。以雙面黏著膠帶27將具 備偏光板211、212之液晶顯示面板28貼附於該支撐板26 上’而形成一體化結構。還声，圖中之21 6及217為反射 板。 [發明所欲解決之問題] 如上述構造之液晶顯示模組，係將導光板收納放入下 側盒子時，盒子側壁與導光板接觸之後，局部會因為刮傷 而產生異物，或將上下之金屬盒相嵌合時，或與支撐板相 嵌合時，該等之局部也會因為刮傷而產生塵埃。該等塵埃 之中’只要是絕緣性塵埃殘留附著於下側盒子與導光板之459212 V. Description of the invention (0 [Field of the invention] The present invention relates to a backlight structure used in a liquid crystal display module, etc., and particularly to a backlight frame, which integrates the backlight and the optical thin layer. Backlight unit structure. [Known technology] An example of a liquid crystal display module that integrates a liquid crystal display panel with backlight is disclosed in Japanese Patent Application Laid-Open No. 10-2829 0. As shown in FIG. The liquid crystal display module is fitted in the side walls of the metal lower sealed box 2 1 and the metal upper sealed box 2 2 'in the box in which the hook-shaped areas are not combined with each other in the figure, and is provided in a stacked manner. Light guide plate 21 of light source 218 3. Diffusion sheet 214 and optical sheet region 24 having laminated triangular prism sheet 2] 5. In addition, 'spacer protrusions 221 provided at the four corners of the metal support plate 26 are set up Above the optical thin layer area 24. A liquid crystal display panel 28 having polarizing plates 211 and 212 is attached to the supporting plate 26 with a double-sided adhesive tape 27 to form an integrated structure. Also, 21, 6 and 217 is a reflective plate. The problem] The liquid crystal display module with the above structure, when the light guide plate is stored in the lower box, after the side wall of the box contacts the light guide plate, foreign matter may be generated locally due to scratches, or the upper and lower metal boxes are embedded. When it is closed or when it is mated with the support plate, dust will also be generated from these parts due to scratches. Among the dust, as long as the insulating dust remains on the lower box and the light guide plate,
4592^ ?4592 ^?
間的空隙等’便會發生問題 示模組商品化時，因為對製 留的塵埃移至顯示區域的話 另外，若是金屬性塵埃的話 顯示不佳的問題之外，可能 成致命的缺陷。 。雖然其可能性低’將液晶顯 品之物理性振動或撞擎，所殘 ’就會形成顯示不佳的問題。 ’如上述因為塵埃之移動形成 發生電之短路現象，也可能形 [解決問題之方式] 根據本發明之背照光單元，包含： 背照光外框，包括下側盒子與具有開口部之頂板； 導光板，收納於上述背照光外框内，具有光源；及 光學薄層區，與上述導光板相層疊； 其特徵為： 上述頂板之結構’係於其下侧表面，在上述開口部周 圍位置設有突起群’該突起群與上述光學薄層區相接觸。 上述突起群最好以複數，方式排列。 而且’上述突起群之各突起的形狀最好為錐體。 同時’上述突起群之各突起之間的間距最好小於上述 突起群之高度。各突起的高度最好小於〇. 5mm。 再者，上述突起群與上述頂板最好為一體成型。 同時，上述背照光外框最好以絕緣性樹脂成型。 上述複數列方式排列之上述突起群之一列，與別列之 各突起之中心位置最好以偏離方式排列。 同時，上述複數列方式排列之上述突起群之一列與別There will be problems such as gaps in the display module. When the display module is commercialized, it will cause fatal defects in addition to the problem of poor display if the dust is moved to the display area. . Although the possibility is low, the problem of poor display may be caused by the physical vibration or collision of the liquid crystal display. 'As mentioned above, a short circuit of electricity occurs due to the movement of dust, which may also form a [solution to the problem] The backlight unit according to the present invention includes: a backlight frame, including a lower box and a top plate with an opening; The light plate is housed in the back light outer frame and has a light source; and an optical thin layer area is laminated with the light guide plate; It is characterized in that the structure of the top plate is attached to its lower surface and is provided around the opening. There is a protrusion group 'This protrusion group is in contact with the above-mentioned optical thin layer region. The above-mentioned protrusion groups are preferably arranged in plural. The shape of each of the protrusions is preferably a cone. At the same time, it is preferable that the distance between the protrusions of the protrusion group is smaller than the height of the protrusion group. The height of each protrusion is preferably less than 0.5 mm. Furthermore, it is preferable that the protrusion group and the top plate are integrally formed. In addition, it is preferable that the above-mentioned backlight frame is formed of an insulating resin. It is preferable that one of the above-mentioned protrusion groups arranged in a plurality of rows is arranged in an offset manner from the center position of each protrusion of another row. At the same time, one of the above-mentioned protrusion groups arranged in the above-mentioned plural series is different from the other
r.；H4r 五、發明說明（3) 列之間’順著其排列的延伸方向看去， jtir ... j-c -c ^c. · , 有出各突起之底 邻以相互重疊方式排列。 [發明之實施例] . 參照圖面以詳細說明本發明之實施例。 圖1係根據本發明，從照光面3位置所看到背昭 10:，面®。碳酸聚合物等絕緣樹脂系之背照光外框1單之 成相當於照光區域的開口部’於背照光外框1之 内收納有照光物件。 Φ .上係顯示背照光外框1之周圍區域剖面，亦即於圖1 中b者A—A線之剖面放大圖。背照光外框i ’依序為反射薄層6、具備光源之導2 夕本與I ΐ未晝出）、使光線形成均句照射且收納已層疊 / 2層區4。以圖示為例’光學薄層區4採行四層構 1 於一片擴散薄層41、“之間，插入二片三棱鏡薄層 42、43。不同於習知例所採，行的二層構造口 Μ 舉例表示習知的邊緣照光方式，導光板5可於導 邊放置榮光管等光源…戈也可以垂直向下的方式 將光源排列於導光板下面。 ® ifi背！!光=框1之頂板11的内侧表面上，沿著開口部14 "口列著一列圓錐、角錐等錐體狀之突起群2。還 I* @ ^主在圖1的左邊畫有突起群，在上下邊及右邊則以 .' \示犬起群，與左邊為同一突起群。將頂板1 1以浮 $加工，可容易地形成該突起群2。同時，採行樹脂 Λ5921 2 五、發明說明u) ' 成型技術的話’能形成更緻密的突起群。以精密之突起群 成型方法為例’例如利用Ο PI方式（〇 p t i c a 1 I n s e r t之輪 寫’使用光學等級之高精密度金屬鑄型匣之成型方法）金 屬鑄型之成型方法。 * 如圖2所示，頂板11與光學薄層區4之最上端之間為外 隙1 3 ’因為預先設置有突起群2，阻擋了異物從開口部^在 邊緣進入該空隙1 3。同時，於組裝背照光單元時，也防 了背照光外框1與光學薄層區4之間所混入的塵埃或異物移 向開口部1 4之照光面3上。於圖中並未畫出，使用雙面勘 著耀帶以架設液晶顯示面板於頂板丨丨上，而構成液晶顯示 模組。 不 本發明中所排列之突起群2的數量、形狀及伟局若能 防止異物之移動或進入’不限何種形態，而為了達到更 效地阻擋塵埃等微小異物之移動，相鄰突起之間的間距最 好小於突起之高度，即小於空隙13之間隔。如圖示之突起 群2也最好為二列以上之排烈。若為一列排列，相鄰突起 之間的間距最好小於二列排列的間距，例如間距最好 突起底部之外徑大小。 於 若大起群2為二列排列，並非單純地排成二列，而 ^圖所示，内侧突起群與外側突起群之各突起之中 即^ ^偏離方式排列’⑯此之間的中心位置互不相同。亦 式。以鋸齒狀排列，從一邊看去無法完全看穿之排列方 另外，如圖2所不，順著内侧突起群與外側突起群之 4 5^2' ：? 五、發明說明（5)-----^ 各邊排列的延伸方向看去，最好可看到突起底部之部八、 相互重疊的方式排列，以阻擋異物之移動。 刀以 還有’突起的高度最好小於〇 · 5mm。其理由為因刮 所產生的塵埃等異物之外徑一般都大於〇5min。 同時，各突起的形狀為圓錐、三角錐、四角錐等 狀’與光學溥層區4之接觸面積為點，故接觸面積為最體 小。因此，其優點為突起壓住薄層而能防止薄層 的皺折。 吓约形成 本發明突起群之主要目的在於阻擋異物之移動突 群之排列最好能與光學薄層區接觸，實非必要壓住以 ^ 薄層。 疋 另外，頂板11與下側盒子之接合可以使用接著劑， 可互相嵌合成型之嵌合結合構造。 一 [發明之效果] 本發明之效果，第一點：背照光外框丨與光學薄層區4 之間設置突起群2，阻擋了筹物進入背照光外框！與光學薄 層區4之間的空隙。同時，於組裝背照光單元時，也防止 了背照光外框1與光學薄層區4之間所混入的異物移向照光 面3。因此，背照光外框1與光學薄層區4之間的某種異物 不易受到背照光之物理性振動或撞擊等而移向照光面3， 便可改善異物對於製造良率的影響。 第二點：背照光外框丨壓住光學薄層區4時，突起群2 為點狀之故，光學薄層區4實際上近乎無拘束狀態，可抑 制光學薄層區4形成皺折。r .; H4r V. Description of the invention (3) Between the columns ′ along the extending direction of the arrangement, jtir ... j-c -c ^ c. ·, the bottom of each protrusion is arranged adjacent to each other in an overlapping manner. [Embodiments of the invention] The embodiments of the invention will be described in detail with reference to the drawings. Fig. 1 is a back view 10 :, surface® according to the present invention, as seen from 3 positions on the illuminated surface. An insulating resin-based back-lighting frame 1 is formed as an opening corresponding to the light-emitting area ', and a light-emitting object is housed in the back-lighting frame 1. Φ. The upper part shows the cross-section of the surrounding area of the backlight frame 1, that is, the enlarged cross-section of the line A-A in b in FIG. The backlit light frame i ′ is a reflective thin layer 6, a light guide 2 and a light guide 2 (sequentially out of the day), and the light is irradiated uniformly, and the layered / 2 layer area 4 is housed. Take the illustration as an example. 'The optical thin layer area 4 adopts a four-layer structure 1 between a diffusion thin layer 41, ", and inserts two triangular prism thin layers 42, 43. Different from the conventional example, the two layers The structure port M is an example of a conventional edge illumination method. The light guide plate 5 can place a light source such as a glory tube on the guide edge ... Ge can also arrange the light source under the light guide plate vertically. ® ifi back!! Light = box 1 On the inner surface of the top plate 11, a row of cone-shaped, pyramid-shaped protrusion groups 2 are arranged along the opening 14 " mouth. Also I * @ ^ The main figure is a protrusion group on the left side of FIG. And the right side is marked with. '\ From the group of dogs, which is the same protrusion group as the left side. The top plate 11 is processed by floating to easily form the protrusion group 2. At the same time, resin Λ5921 2 is used. 5. Description of the invention u) 'The words of molding technology' can form denser protrusion groups. Take the precise protrusion group forming method as an example ', for example, using the 0 PI method (0ptica 1 I nsert's wheel writing) using an optical grade high precision metal mold box Forming method) Forming method of metal mold. * As shown in Figure 2, An external gap 1 3 ′ is provided between the plate 11 and the uppermost end of the optical thin layer region 4. Because a protrusion group 2 is provided in advance, foreign matter is prevented from entering the gap 13 from the opening ^ at the edge. At the same time, when the backlight unit is assembled It also prevents dust or foreign objects mixed between the backlit outer frame 1 and the optical thin layer region 4 from moving to the illuminated surface 3 of the opening 14. It is not shown in the figure, and a double-sided survey of the flares is used. A liquid crystal display module is constructed by erecting a liquid crystal display panel on a top plate. The number, shape, and strength of the protrusion groups 2 arranged in the present invention can prevent foreign matter from moving or entering into any form. In order to more effectively block the movement of small foreign objects such as dust, the distance between adjacent protrusions is preferably less than the height of the protrusions, that is, less than the gap 13. The protrusion group 2 as shown in the figure is also preferably two or more rows Extensive. If it is a one-row arrangement, the distance between adjacent protrusions is preferably smaller than the two-row arrangement, for example, the distance between the protrusions is best. The outer diameter of the bottom of the protrusion is better. In two rows, as shown in the figure, the medial protrusion Among the protrusions of the group and the outer protrusion group, the arrangement of the ^ ^ deflection pattern is different. The center positions between them are different from each other. Also, they are arranged in a zigzag pattern, and the arrangement cannot be completely seen from one side. No. 2, follow the 4 5 ^ 2 'of the inner protrusion group and the outer protrusion group:? 5. Description of the invention (5) ----- ^ Looking at the extending direction of the sides, it is best to see the bottom of the protrusion. The eighth part is arranged in an overlapping manner to prevent the movement of foreign objects. The height of the blades is preferably less than 0.5mm. The reason is that the outer diameter of foreign objects such as dust generated by scraping is generally greater than 0.5min. At the same time, the shape of each protrusion is a cone, a triangular pyramid, a quadrangular pyramid, and the like. The contact area between the protrusions and the optical chirped layer region 4 is a point, so the contact area is the smallest. Therefore, there is an advantage in that the protrusions press the thin layer and prevent the thin layer from wrinkling. Forming scares The main purpose of the protruding group of the present invention is to prevent the arrangement of the moving group of foreign objects from contact with the optical thin layer area, and it is not necessary to hold down the thin layer.疋 In addition, the top plate 11 and the lower case can be bonded with each other by using an adhesive, which can be fitted and molded with each other. [Effect of the invention] The effect of the present invention is the first point: a protrusion group 2 is arranged between the backlit outer frame 丨 and the optical thin layer region 4 to prevent the chip from entering the backlit outer frame! And the optical thin layer region 4. At the same time, when assembling the backlight unit, foreign objects mixed between the backlight frame 1 and the optical thin layer region 4 are prevented from moving to the illumination surface 3. Therefore, a certain foreign object between the backlight frame 1 and the optical thin layer region 4 is not easily moved to the illumination surface 3 by the physical vibration or impact of the backlight, and the influence of the foreign object on the manufacturing yield can be improved. Second point: When the outer frame of the backlight 丨 presses the optical thin layer region 4, the protrusion group 2 is dot-shaped, and the optical thin layer region 4 is practically unconstrained, which can prevent the optical thin layer region 4 from forming a wrinkle.
第9頁 2 五、發明說明（6) 第三點：突起群2與背照光外框1為一體化結構之故， 背照光外框1成型時，既可形成突起群2。因為不須追加附 屬零件，將不致於引起成本之上揚。 第四點：背照光外框1為絕緣性之故，可抑制產生金 屬塵埃與避免短路等致命性問題。Page 9 2 V. Description of the invention (6) Third point: Because the protruding group 2 and the backlight frame 1 are integrated, when the backlight group 1 is formed, the protruding group 2 can be formed. Because no additional parts are required, it will not cause costs to rise. Fourth point: Because the backlight frame 1 is insulating, it can suppress fatal problems such as the generation of metal dust and avoid short circuits.
第10頁 ^-9212 圖式簡單說明 圖1係根據本發明之實施例所得之背照光單元的平面 圖。 圖2係圖1中沿著A — A線之放大剖面圖。 圖3係舉例顯示習知的液晶顯示模組之剖面圖。 [符號說明] 1 背 昭 < \\Ί 光 外 框 2 突 起 群 3 昍 光 面 4 光 學 薄 層 區 5 導 光 板 6 反 射 薄 層 10 背 昭 光 單 元 11 頂 板 12 下 側 盒 子 13 空 隙 14 開 Π 部 41 44 擴 散 薄 42 43 三 稜 鏡Page 10 ^ -9212 Brief description of the drawings Fig. 1 is a plan view of a backlight unit according to an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view taken along line A-A in FIG. 1. FIG. FIG. 3 is a cross-sectional view showing a conventional liquid crystal display module by way of example. [Description of symbols] 1 back display < \\ Ί light outer frame 2 projection group 3 black glossy surface 4 optical thin layer area 5 light guide plate 6 reflective thin layer 10 back light unit 11 top plate 12 lower box 13 gap 14 open Π 41 44 Diffusion thin 42 43 Three
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