1295229 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種擴散板（Diffuser )的製造方法， 特別是指一種大尺寸擴散板的射出成形製程。 【先前技術】 背光模組（Back light module)是提供平面顯示器光源 的關鍵組件之一，隨著市場對平面顯示器尺寸的增加要求 ’背光模組的尺寸也需不斷地對應增加，當然，組構成背 光模組的零組件，例如擴散板（Diffuser)、導光板（Light guide plate) .···等也必須對應地往大尺寸方向發展。 以產製用於液晶電視所適用的擴散板為例，之前是以 押出成形板狀薄片後，再依據所需的尺寸進行裁切成形， 整體加工流程繁多，不但生產成本高，同時料材損耗也較 目前’則多是以射出成形產製擴散板—由於擴散板木 較於其他物件較為特殊，僅為一厚度約2職左右，但是肩 寬尺寸卻由20时至47吁’甚至高達6Q相上且須符洽 =學需要的薄板，因此，參閱圖卜卩目前射出成形製程之 技術側面中央進料口設言 "（即以單一進料口⑺設置於對 應成形出擴散板之射出成形模具的模穴的側面中央），一次 原料產製擴散板時，會因為所需產製之擴散板 的長見比例過大1 了必須以較大的鎖模力進行，而 經濟效k外，也存在有射线動長度u不 動 距離超過液態擴散㈣料可流動距離） : 1295229 12明顯的問題’同時，更會因為應力分配不均而使得產製 的擴散板出現翹曲的問題。 茶閱圖2、圖3,雖然業界嚐試以射出成型技術相關教 科㈢所教示’以如圖2所示之包含對稱設計之六進料口 21 的/、點進料口逡計2，及如圖3所示之包含對稱設計之八進 料口 31的八點進料口設計3，改善側面中央進料口設計、 入/谷/容原料產製擴散板時所產生的問題，但是仍然由於 擴散板相較於其他物件較為特殊，而無法改善上述產製過 耘中所發生的問題，以具有經濟效益之製程良率產製大尺 寸的擴散板。 口此如何改善目鈾產製大尺寸（26吋以上平面顯示 器所適用）擴散板之射出成型製程，卩高良率產製大尺寸 的擴散板，是業者努力的主要方向之一。 【發明内容】 因此，本發明之目的，即在提供一種產製大尺寸擴散 板之奇數點進料σ射出成形製程，以射出成形產製大尺寸 的擴散板。 。於疋’本發明一種擴散板之奇數點進料口射出成形製 猃，包含-進料口設計步驟、一原料充填步驟、一靜置步 驟，及一脫模步驟。 =科口設計步料於對應成形該擴散板之射出成型 上的-模穴形成與該模穴相連通而將溶溶原料注入該 中之進料口單元，且該進料口單元具有—位於該模穴 中心且可被控制地以閥門啟閉的主進料口，、 及一分別包括 1295229 至少一可被控制地以閥門啟閉之第—進料口且沿該模穴之 較長邊分別位於該主進料口兩側的第_進料口組。 該原料充填步驟是僅先開啟該主進料口的闕門而將溶 溶原料注入該模穴中，並待注入之溶溶原料至少流動至該 二第一進料口組位置時，才再開啟該二第一進料口組之第 進料口的閥Η，以同時自該主進料σ與第—進料口組將 溶溶原料注入該模穴中，而當溶溶原料填充滿該模穴後關 閉該主進料口與第-進料口組的閥門，停止注入溶溶原料 Ο 該靜置步驟是靜置填充滿溶溶原料之模穴預定時間冷 卻，使該模穴中之溶溶原料固化成一成品。 忒脫杈步驟是將該成品脫模取出而得該擴散板。 本發明的功效在於奇數點進料口的位置設計，配合依 序開啟主進料口與其他進料口用射出充填方式成形，而可 以無須進行後加工製程，直接產製大尺寸、且無結合線與 成品翹曲現象的擴散板。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内谷中，類似的元件是以相同的編號來表示。 參閱圖4、圖5,本發明擴散板之奇數點進料口射出成 形製程的一第一較佳實施例，適用於以射出成形技術產製 1295229 背的擴散板，特別是大尺寸（32相上）的擴散板 Ή呈包含一進料口設計步驟41、一原料充填步驟42、 一靜置步驟43，及一脫模步驟44。 首先進行該進料口設計步驟41，是於對應成形該擴散 反之射ϋ成型用模具的—模穴51形成與該模穴η相連通 而供，溶原料注人該模穴51巾之進料口單元52，並使該進 料早7L 52具有一位於該模穴51中心且可被控制地以闕 門啟閉的主進料口 53，及二分別僅包括一口徑小於該主進 料口 53且可被㈣地以閥門啟閉之第-進料口 541的第一 進料口組54，锋-锿 、公，· 弟一進料口組54之第一進料口 541沿該 柄穴5!之較長邊成對稱地分別位於該主進料口 53兩側， hU-進料σ 541與該主進料σ W位在平行於該模穴 51之較長邊的同一直線上。 然後進行該原料充填步驟42，是僅先開啟該主進料口 53閥門將溶溶原料注入 、 备表 犋八Η中，亚待注入之溶溶原料 化動至該二第_進料口 541時（如圖中以該主進料口兄為 圓心之虛線圓61所示）’才再開啟該二第-進料口 54的閥 1，並同時自該主進料口53與二第—進料口⑷將溶溶原 料注入該模穴51中，而a^ 中而*洛洛原料填充滿該模穴51後關 閉該主進料口 53與二第一谁袓 溶原料。 進科口⑷的間門，停止注入溶 再進行該靜置步驟43，此步驟是待溶溶原料填充滿該 模穴51並關閉該主進料口 53與二第一進料口 541闊門後 ，月r置填充滿溶溶原料之模穴51狀時間冷卻，使該模穴 1295229 51中之溶溶原料冷卻固化成一成品。 最後進行該脫模步驟44，將上一靜置步驟43所固化得 之該成品脫模取出，即無須再進行任何後加工製程（即一 般之表面處理、拋光等再加工製程），而直接製得該擴散板1295229 IX. Description of the Invention: [Technical Field] The present invention relates to a method for manufacturing a diffuser plate, and more particularly to an injection molding process for a large-sized diffuser plate. [Prior Art] Backlight module is one of the key components to provide a flat panel display light source. As the size of the flat panel display increases, the size of the backlight module needs to be continuously increased. Of course, the composition of the group The components of the backlight module, such as a diffuser (Diffuser), a light guide plate, etc., must also be developed in a large size direction. For example, in the case of a diffusing plate suitable for use in a liquid crystal television, the forming of the sheet-like sheet is carried out, and then the cutting is performed according to the required size, and the overall processing flow is numerous, not only the production cost is high, but also the material. The loss is also more than the current 'more is the injection molding production of diffusion plate - because the diffusion plate wood is more special than other objects, only a thickness of about 2 jobs, but the shoulder width size from 20 to 47 calls 'even up to On the 6Q phase, it must be in accordance with the thin plate required for learning. Therefore, refer to the technical side of the current injection molding process, the central feed inlet setting " (ie, a single feed port (7) is placed in the corresponding shaped diffuser plate. When the diffusing plate is produced by one raw material, the length of the diffusing plate to be produced is too large. It must be carried out with a large clamping force, and the economic efficiency is outside. There is also a ray length u does not move more than liquid diffusion (four) material flowable distance): 1295229 12 obvious problem 'At the same time, it will cause warpage of the produced diffuser due to uneven stress distribution The problem. Tea, Figure 2, Figure 3, although the industry has tried to teach the teaching of the injection molding technology (3), as shown in Figure 2, including the symmetrical design of the six feed port 21 /, the point feed port 2, and The eight-point feed port design 3 of the symmetrical design of the eight feed port 31 shown in Figure 3 improves the side central feed port design, the problems caused by the inlet/valley/capacity material to produce the diffusion plate, but still due to The diffuser plate is more special than other objects, and cannot solve the problems occurring in the above-mentioned production process, and produces a large-sized diffuser plate with economical process yield. How to improve the large-size uranium production (for 26-inch flat panel display) diffusion plate injection molding process, high-yield production of large-size diffusion plate is one of the main directions of the industry. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an odd-numbered feed σ injection molding process for producing a large-sized diffusion plate to produce a large-sized diffusion plate by injection molding. . In the present invention, an odd-numbered feed opening of a diffuser plate is injection molded, comprising a feed inlet design step, a raw material filling step, a standing step, and a demolding step. a section of the nozzle that forms a mold cavity corresponding to the injection molding of the diffusion plate to form a feed port unit that communicates with the cavity to inject the solvent into the medium, and the inlet unit has a main feed port at the center of the cavity and controllably opened and closed by a valve, and a first inlet port 1252929, respectively, which can be controlled to open and close with a valve and along the longer side of the cavity The first inlet port group on both sides of the main feed port. The raw material filling step is to first open the trick of the main feed port to inject the dissolved raw material into the cavity, and the solution of the dissolved raw material to be injected flows to at least the position of the two first feed port groups before opening the material. a valve port of the first inlet port of the first inlet port group to simultaneously inject the dissolved raw material into the cavity from the main feed σ and the first feed port group, and when the dissolved raw material is filled in the cavity Closing the valve of the main feed port and the first inlet port group, stopping the injection of the dissolved raw material Ο. The standing step is to statically fill the cavity filled with the dissolved raw material for a predetermined time to cool, so that the dissolved raw material in the cavity is solidified into a finished product. . The mashing step is to demold the finished product to obtain the diffusing plate. The utility model has the advantages of the position design of the odd-point feeding port, and the main feeding port and the other feeding port are sequentially formed by the injection filling method, and the large-scale and non-bonding can be directly produced without the post-processing process. A diffuser plate for the warpage of the wire and the finished product. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 4 and 5, a first preferred embodiment of the odd-numbered feed opening injection molding process of the diffuser of the present invention is suitable for producing a 1295229 back diffuser by injection molding, especially for large sizes (32 phase). The upper diffuser plate includes a feed port design step 41, a material fill step 42, a rest step 43, and a demold step 44. First, the feeding port designing step 41 is performed to form the diffusion, and the cavity 51 of the injection molding die is formed to communicate with the cavity η, and the molten material is injected into the cavity 51. The port unit 52 has a feed inlet early 7L 52 having a main feed port 53 located at the center of the cavity 51 and controllably opening and closing with a door, and two respectively including a diameter smaller than the main feed port 53 and the first inlet port group 54 of the first inlet port 541 which can be opened and closed by the valve, the first inlet port 541 of the front inlet port group 54 and the first inlet port 541 of the inlet port group 54 along the handle The longer sides of the holes 5! are symmetrically located on either side of the main feed port 53, and the hU-feed σ 541 and the main feed σ W are on the same line parallel to the longer side of the cavity 51. . Then, the raw material filling step 42 is performed by first opening the valve of the main feed port 53 to inject the dissolved raw material into the preparation, and when the dissolved raw material to be injected is turned into the second feed port 541 ( As shown in the figure, the main feed port brother is centered on the dotted circle 61 (represented by the dotted circle 61) to reopen the valve 1 of the second inlet-feed port 54 and simultaneously from the main feed port 53 and the second feed-feed The mouth (4) injects the dissolved raw material into the cavity 51, and the *Lolo raw material fills the cavity 51 and then closes the main feed port 53 and the second first material. The door of the branch (4) is stopped and the solution is stopped. The step 43 is to fill the mold hole 51 and close the main feed port 53 and the first feed port 541. The month r is filled with the mold hole filled with the dissolved raw material for 51 time cooling, so that the molten material in the cavity 1295229 51 is cooled and solidified into a finished product. Finally, the demolding step 44 is performed, and the finished product obtained by the last standing step 43 is demolded, that is, no further post-processing process (ie, general surface treatment, polishing, etc.) is required, and the direct processing is performed. The diffuser
參閱圖4、圖6,本發明擴散板之奇數點進料口射出成 形製程的一第二較佳實施例，是與上例相似，適用於以射 出成形技術產製者光模組的擴散板，特別是大尺寸（3 2忖 以上）的擴散板，該製程包含一進料口設計步驟41、一原 料充填步驟42、一靜置步驟43，及一脫模步驟44。 首先進行該進料π設計步驟41，是於對應成形該擴散 板之射出成型用模具的一模穴51形成與該模穴51相連通 而供溶溶原料注人該模穴51中之進料口單元52，並使該進 料口早το 52具有-位於該模穴51中心且可被控制地以闕 門啟閉的主進料口 53 二分別僅包括一口徑小於該主進料 口 53且可被控制地以閥門啟閉之第一進料口 54ι的第一 料口組54,及二分別僅包括一口徑小於該主進料口幻且 被控制地以_啟閉之第二進料^ 551的第二進料口組 該二第-進料π組54之第—進料σ 541沿該模穴 之較長邊成對義分職於魅進料口 53兩側，該二筹 進料口組55之第二進料口⑸亦是沿該模穴η 成對稱地分別位於該主進料σ 53兩側，且較該二第一達 口 541更錢該模穴51之二較短邊，叫，該主進料口 1295229 、二第一進料口 541與該二第二進料口 551位在平行於該 模穴51之較長邊的同一直線上。 " 然後進行該原料充填步驟42，是僅先開啟該主進料口 53閥門將溶溶原料注入該模穴51巾，並待注入之溶溶原料 流動至該二第一進料口 541時（如圖中以該主進料口 53為 圓心之虛線圓61所示），才再開啟該二第一進料口 541閥 門，並同時自該主進料口 53與二第一進料口 541將溶溶原 料庄入δ亥模穴中；而當待注入之溶溶原料流動至該二第二 進料口 551時（如圖中以該二第一進料口 541為圓心之虛 線圓62所示），才再開啟該二第二進料口 551閥門並同時 自该主進料口 53與第一、二進料口 541、551將溶溶原料 Λ模八$1中’並當浴溶原料填充滿該模穴5 1後關閉 該主進料口 53與第一、二進料口 541、551。 再依序進行該靜置步驟43與脫模步驟44，靜置填充滿 ✓谷/谷原料之模穴5 1預定時間使注入該模穴5 1中之溶溶原 料固化成成品後，將該成品脫模取出，即無須再進行任何 後加工製程而直接製得該擴散板。 而要特別加以說明的是，該主進料口 5 3、第一、二進 料口 541、551的口徑大小，須視產製不同尺寸之擴散板而 定’可以以完全相同口徑之設計或是三者均不相同之設計 貝施’因為擴散板的尺寸眾多，所以此等主進料口 5 3、第 一、二進料口 541、551的口徑大小配置方式當然也非唯一 ’在此不多加舉例贅述。 參閱圖4、圖7，本發明擴散板之奇數點進料口射出成 10 1295229 形製程的一第三較佳實施例，是與該第一較佳實施例相似 ，適用於以射出成形技術產製背光模組的擴散板，特別是 大尺寸的擴散板，該製程包含一進料口設計步驟41、一原 料充填步驟42、一靜置步驟43，及一脫模步驟44。 首先進行該進料口設計步驟41，是於對應成形該擴散 板之射出成型用模具的一模穴51形成與該模穴51相連通 而供溶溶原料注入該模穴5丨中之進料口單元52，且該進料 口單兀52具有一位於該模穴51中心且可被控制地以閥門 啟閉的主進料口 53，及二分別包括二可被控制地以閥門啟 閉之第一進料口 541的第一進料口組54,該二第一進料口 組54並沿該模穴之較長邊成對稱地分別位於該主進料口 53 兩側，該每一第一進料口組54之二第一進料口 541位在平 行於該模穴5 1之較短邊的同一直線上。 然後進行該原料充填步驟42，是僅先開啟該主進料口 53閥門將溶溶原料注人該模穴51卜並待注人之溶溶原料 流動至該四第-進料σ 541時（如圖中以該主進料口 ^為 圓心之虛線圓61所示）’才再開啟該四第一進料口 541閥 門、，並同時自該主進料σ 53與四第—進料σ⑷將溶溶原 料注入该核穴5 1中，穿成益*山A、ny /丄 凡成射出成形條件；而當溶溶原料填 充滿該模穴後關閉該主進料σ 53與四第—進料口⑷ 閥門，不再灌注入原料。 最後依序進行該靜置步驟43與脫模步驟44，靜置填充 滿溶溶原狀模穴51財相使注人„穴51 _之溶、容 原料冷㈣化成成品後，將該成品賴取出，即 進 1295229 行任何後加工製程而直接製得該擴散板。 類似地，該主進料口 53、第一進料口 541的口徑大小 須視產製不同尺寸之擴散板而定，因為此等主進料口 53、 第一進料口 541的口徑大小配置方式種類眾多，在此不多 加舉例贅述。 由上述說明可知，本發明擴散板之奇數點進料口射出 成形製程，主要是採用熱澆道直接自對應擴散板正面的模 φ 面，並對應不同尺寸之大尺寸擴散板而設計奇數點進料口 的位置，並同時配合不同位置之進料口的設計使用大、小 口徑不同或相同之進料口，再配合特定的開啟順序與溶溶 原料在該模穴中的流動狀況而適當地開啟不同位置的進料 口灌注入溶溶原料，而無須後加工製程即可產製出大尺寸 的擴散板。 由於，本發明之製程採奇數點進料口且為多數進料口 的配置，所以可以較低的射出壓力射出原料，也因此可以 • 使用較低的鎖模力射出成形擴散板，而節省製程成本；也 口為衣耘中的射出壓力低，相對的產品中殘留應力就少， 口此可以直接製得無翹曲、輝度均齊度高的大型擴散板； 且:更由於控制開啟不同進料口的順序射出溶溶原料，而 可知到擴散板上無結合線、無外觀不良的特色。 再者由於本發明之製程採在模具上採用奇數點、大 • /]、口徑不同或相同之多數進料口的配置設計，並配合進料 口的位置設計及溶溶原料在該模穴中的流動狀況，而適當 地開啟不同位置的進料口以灌注入溶溶原料，因此可以避 12Referring to FIG. 4 and FIG. 6, a second preferred embodiment of the odd-numbered inlet injection molding process of the diffuser plate of the present invention is similar to the above example, and is suitable for the diffusion plate of the optical module produced by the injection molding technology. In particular, a large-sized (32 忖 or more) diffusion plate includes a feed port design step 41, a material filling step 42, a standing step 43, and a demolding step 44. First, the feeding π designing step 41 is formed in a cavity 51 corresponding to the injection molding die for forming the diffusion plate, and is connected to the cavity 51 for injecting the molten material into the inlet of the cavity 51. Unit 52, and having the feed port early το 52 having a main feed port 53 located at the center of the cavity 51 and controllably opening and closing with the door, respectively, includes only one aperture smaller than the main feed port 53 and The first port group 54 of the first inlet port 54i that can be controlled to open and close with a valve, and the second group respectively include a second feed having a diameter smaller than the main feed port and controlled to open and close ^ 551 second feed port group The second feed-feed group π group 54 - feed σ 541 along the longer side of the mold hole is divided into two sides of the charm feed port 53, the second The second feed port (5) of the feed port group 55 is also symmetrically located on both sides of the main feed σ 53 along the mold hole η, and is more expensive than the two first port 541. The shorter side, the main feed port 1295229, the second first feed port 541 and the second second feed port 551 are located on the same line parallel to the longer side of the cavity 51. " Then, the raw material filling step 42 is performed by first opening the main feed port 53 valve to inject the dissolved raw material into the cavity 51, and flowing the dissolved raw material to be injected to the two first feed ports 541 (eg In the figure, the main feed port 53 is indicated by the dotted circle 61 of the center), and the two first feed ports 541 are opened again, and simultaneously from the main feed port 53 and the two first feed ports 541. The dissolved raw material is immersed in the δ hai mold hole; and when the dissolved raw material to be injected flows to the second second feed opening 551 (as shown by the dashed circle 62 of the center of the two first feed ports 541 in the figure) And then opening the second second inlet 551 valve and simultaneously filling the solvent from the main feed port 53 and the first and second feed ports 541, 551 by the solvent; and filling the bath material After the cavity 51, the main feed port 53 and the first and second feed ports 541, 551 are closed. Then, the standing step 43 and the demolding step 44 are sequentially performed, and the cavity 5 filled with the valley/valley raw material is left to stand for a predetermined time to solidify the dissolved raw material injected into the cavity 51 into a finished product, and then the finished product is finished. The demolding is taken out, that is, the diffusion plate is directly produced without any post-processing. In particular, the size of the main inlet port 5, the first and second inlet ports 541, 551, depending on the size of the diffuser plate can be determined by the same diameter or It is a design that is different from the three. Because the size of the diffuser plate is large, the size of the main feed port 5 3 and the first and second feed ports 541 and 551 are of course not unique. Do not add more examples. Referring to FIG. 4 and FIG. 7, a third preferred embodiment of the odd-numbered feed port of the diffuser plate of the present invention is formed into a 10 1295229-shaped process, which is similar to the first preferred embodiment and is suitable for use in injection molding technology. A diffuser plate of a backlight module, particularly a large-sized diffuser plate, includes a feed port designing step 41, a material filling step 42, a standing step 43, and a demolding step 44. First, the feed port designing step 41 is performed in a cavity 51 corresponding to the injection molding die for forming the diffusion plate, and a feed port that communicates with the cavity 51 to inject the dissolved material into the cavity 5丨 is formed. Unit 52, and the inlet port unit 52 has a main inlet port 53 located at the center of the cavity 51 and controllably opened and closed by a valve, and two respectively including two controllable valves opening and closing a first inlet port group 54 of a feed port 541, the two first inlet port groups 54 are symmetrically located on opposite sides of the main feed port 53 along the longer sides of the die hole, each of the first The first feed port 541 of one of the feed port groups 54 is located on the same line parallel to the shorter side of the cavity 51. Then, the raw material filling step 42 is performed by first opening the main feed port 53 to inject the dissolved raw material into the cavity 51 and flowing the dissolved raw material to be injected to the fourth feed-feed σ 541 (as shown in the figure). In the middle of the main feed port ^ as the center of the dotted circle 61 (shown in the center of the circle circle 61) 'reopen the four first feed port 541 valve, and at the same time from the main feed σ 53 and the four first feed σ (4) will dissolve The raw material is injected into the nuclear pocket 51, and is formed into a forming condition by wearing Yishan A, ny/丄凡成; and the main feed σ 53 and the fourth first feeding inlet (4) are closed when the molten raw material is filled in the cavity. The valve is no longer filled with raw materials. Finally, the standing step 43 and the demolding step 44 are sequentially performed, and the solid solution is filled with the solute-like mold cavity 51 to make the injection of the „ 穴 51 _, the raw material is cooled (four) into a finished product, and the finished product is taken out, The diffusion plate is directly prepared by any post-processing process of 1295229. Similarly, the size of the main feed port 53 and the first feed port 541 depends on the diffusion plate of different sizes, because such a size The arrangement of the size of the main feed port 53 and the first feed port 541 is various, and will not be described in detail here. It can be seen from the above description that the odd-numbered inlet of the diffuser plate of the present invention is injection-molding process, mainly using heat. The runner directly designs the position of the odd-point feed port from the mold φ surface on the front side of the corresponding diffuser plate, and corresponding to the large-size diffuser plate of different sizes, and at the same time, the design of the feed port at different positions uses different sizes of large and small calibers or The same feed port, together with the specific opening sequence and the flow condition of the dissolved raw material in the cavity, appropriately opening the feed port at different positions to inject the dissolved raw material without the post-processing process Producing a large-sized diffuser plate. Since the process of the present invention takes an odd number of feed ports and is configured for a plurality of feed ports, the raw material can be injected at a lower injection pressure, and thus a lower mold can be used. The force is injected into the forming diffusion plate, which saves the process cost; the injection pressure in the mouth is low, and the residual stress in the relative product is small, and the mouth can directly obtain a large diffusion plate without warping and high uniformity of brightness. And: because the control of the opening of different feed ports in the sequence of the dissolution of the raw materials, it can be seen that there is no bonding line on the diffusion plate, no appearance defects. Moreover, because the process of the invention adopts odd points and large on the mold. /], the design of the majority of the inlets with different or the same caliber, and with the position design of the feed port and the flow condition of the dissolved material in the cavity, appropriately opening the feed port at different positions to infuse the solution Raw materials, so you can avoid 12
1295229 免原料射注入模穴中流動時結合線的產生，而產製高光學 品質的大尺寸擴散板。 綜上所述，本發明確實以奇數點、大小不同或相同口 徑之進料口的設計，並配合對應進料口位置的設計與溶溶 原料在該模穴中的流動狀況，而以特定的開啟順序開啟進 料口閥門射出原料以成形擴散板的完整製程，而可以無須 後續加工製程且低成本地產製内應力低而無翹曲變形，以 及輝度均齊度最佳的大尺寸擴散板，確實改善目前以射出 成形產製擴散板時，因擴散板的長寬比例過大，而有射出 流動長度不足及不平均、結合線明顯、射出壓力不平均的 問題，達到本發明的創作目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 =以此限定本發明實施之範圍，即大凡依本發明中請專利 视圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋目岫射出成形之側面中央進料口設計 圖2疋目則射出成形之六點對稱進料口設計 圖3是一目 圖4是一 射出成形製程； =射出成形之八點對稱進料口設計； w秩圖，說明本發明擴散板之奇數點進料 〇 圖5是一奇數點 之製程之一二點進料口 進料口之模穴設計圖 的設計； 圖 6是一奇數點 進料口之模穴設計圖 說明配合圖4 說明配合圖4 13 1295229 之製程之一五點進料口的設計；及 ，說明配合圖4 圖7是一奇數點進料口之模穴設計圖 之製程之另一五點進料口的設計。 1295229 【主要元件符號說明】 1 側面中央進料口設 51 模穴 計 52 進料口單元 11 射出流動長度 53 主進料口 12 結合線 54 第一進料口組 2 六點進料口設計 541 第一進料口 21 進料口 55 第二進料口組 3 八點進料口設計 551 第二進料口 31 進料口 61 虛線圓 41 進料口設計步驟 62 虛線圓 42 原料充填步驟 43 靜置步驟 44 脫模步驟1295229 Produces a large-size diffuser with high optical quality by producing a bond line when the material is injected into the cavity. In summary, the present invention does not design the feed port with odd points, different sizes or the same caliber, and cooperates with the design of the corresponding feed port position and the flow condition of the dissolved material in the cavity, and opens with a specific opening. Sequentially opening the inlet valve to inject the raw material to form a complete process of the diffusion plate, without the need for subsequent processing and low-cost real-time internal stress is low without warping deformation, and the large-size diffusion plate with the best uniformity of brightness is indeed When the diffusion plate is produced by injection molding, the length and width ratio of the diffusion plate are too large, and the problem that the injection flow length is insufficient and uneven, the bonding line is conspicuous, and the injection pressure is not uniform is achieved, and the object of the present invention is achieved. However, the above is only the preferred embodiment of the present invention, and does not limit the scope of the implementation of the present invention, that is, the simple equivalent change of the patent scope and the description of the invention according to the present invention. And modifications are still within the scope of the invention patent. [Simplified illustration of the drawing] Fig.1 The design of the central feeding inlet of the side of the injection molding is shown in Fig. 2. The design of the six-point symmetric feeding inlet of the injection molding is shown in Fig. 3. Fig. 3 is an injection molding process; Fig. 4 is an injection molding process; Eight-point symmetric feed inlet design; w rank map, illustrating the odd-point feed of the diffuser plate of the present invention; FIG. 5 is a design of a cavity design drawing of one of the two-point feed inlets of an odd-numbered process; Figure 6 is a schematic diagram of the design of the cavity of an odd-numbered feed port. The design of the five-point feed port with the process of Figure 4 13 1295229 is shown in conjunction with Figure 4; and the description is shown in Figure 4 Figure 7 is an odd-point feed. Another five-point feed port design for the process of designing the cavity. 1295229 [Description of main component symbols] 1 Side central feeding port setting 51 Moulding point gauge 52 Feeding port unit 11 Injection flow length 53 Main feed port 12 Bonding line 54 First feed port group 2 Six-point feed port design 541 First feed port 21 Feed port 55 Second feed port group 3 Eight-point feed port design 551 Second feed port 31 Feed port 61 Dotted circle 41 Feed port design step 62 Dotted circle 42 Raw material filling step 43 Resting step 44 demolding step