517273 五、 發明説明（ 發明領域 本發明係關於—種針頭清潔裝置及其方法，特別關於一 種應用於電子封裝之點膠系統， 膠。 凡目你針頭在吐出端的殘 發明背景 點膠作業方法與其硬體系統已被廣泛應用於電子封裝 界，許多封裝製程都需要點上合適的膠材以達到產品保護 與結合不同物質的目的。例如：#晶製程時需要在基板或 導線架上點人銀膠；在晶片與其内接線路的區域點上絕緣 膠以完成液態封膠的製程；及覆晶接合之凸塊、基板及晶 片間的空隙處需要充填絕緣膠。 整個點膠製程中影響品質的重要條件是膠量控制，希望 每次作業吐出膠量之變異能在規定的容許範圍θ，因為點 膠量過多與太少會造成產品的不合規格或容易產生失效。 許多因素會造成膠量控制不佳，纟中以膠材本身之特性與 點膠作茉之習慣動作係造成膠量不穩定的重要因素。” 圖la到圖ld係點膠作業之連續步驟之示意圖。一膠管 Η之下方設有針頭12，針頭12的一端為膠量吐出之開 口。在點膠作業前會確認針頭12是否清潔並擦拭乾淨，如 圖la表示針頭12的外徑無任何物質沾附其上，僅在吐出端 有一小膠滴13因重力牵引而懸於出口。請參考圖ib，當膠 管Η從設定的起始位置往下運動而與基板14達到一適當的 距離時則停止向下運動，並將管内之膠材吐出。因一般膠 材具有黏稠性，故吐出時吐膠量丨5緩緩向四邊流動，同睁 H:\hu\Lgc\ 日月光中說\ASEK263(73351 >.doc 本紙張尺度適用中國國家標準(CNS) A4規格（210X297公董Γ 517273 五、發明説明（2 針頭12之吐出端浸埋在吐膠量15之中。當膠量吐出動作完 成後’膠管11向上運動欲回到起始位置，此時 ” 附的膠材與基板14上的點膠量15备 而\ 沾 里Α〕曰新漸拉開而分離，如圖 1 C所不。最後針頭i 2之吐出 旦 ⑽曰田,些殘膠1 7，點膠 置1 5也會因前述分開動作時造 ，一 、风私、、糸1 6的現象（膠材黏稠 度越高此現象越嚴重卜由此可知，每次點膠作業就會造 成殘膠17的發生’而膠材本身因毛細現象也會在針頭口的 表面向膠管端慢慢攀爬，所以殘膠17會越積越多並且往更 上方沾附。殘膠17因累積太多在針頭12上，最終受到重力 而滴落在基板14或機台上。 裝 故此點膠作業每隔一固定的時間就需要擦拭並清潔針頭 1 2，藉以將沾附的殘膠丨7去除乾淨，若殘膠丨7沾附過久 會逐漸硬化屆時又更難清除。圖2係習知技術的針頭清潔 裝置之示意圖，其在點膠作業區内設有一淺盤式的容器 線 2 1，該容器2 1内放置無塵紙2 2或紗布。當針頭1 2連續吐 膠達一固定之時間，膠管1 1會依照預先設定之控制程式移 至容器2 1的上方，其針頭1 2之吐出端的殘膠1 7恰好碰觸 無塵紙2 2的表面。利用無塵紙2 2之纖維狀結構可吸附並導 流針頭1 2上的殘膠1 7，但同時也會將針頭1 2的管徑内之 膠材吸出並有空氣跑進去形成氣泡，這在後續作業時因而 造成產品膠體上會有空洞的缺陷。當膠體上的空洞超過規 定之生產標準就要判定外觀不良而予以報廢處理。而若在 品檢時未能及時挑出該種不良品時，很容易遭到客戶退貨 的命令。 H:\hu\Lgc\ 日月光中說\ASEK263(7335 丨).doc 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐） /273 /273 五 、發明説明（ 發月〈第目的係提供一種針頭清潔裝置，可以去除 針頭上a點料業時造成的殘膠。 本發明之第二目的佴楹 ^ ^ ^ 一 7係知供一種可靠的針頭清潔方式，當 、十 >員/目你元畢後而重新谁/ 里对進仃點膠作業時，能有效防止氣泡 的發生。 為了達到上述目的，本發明提供一種針頭清潔裝置，係 7於包子封裝之點膠系統。該針頭清潔裝置係在點膠作業 區内汉一谷益，另有一片狀物或板狀物垂直固定在容器 内二且孩片狀物具有一上部狹長面。然後以參數控制整個 膠管之運動’將針頭移至該片狀物或板狀物之狹長面附 近’並使1¾針頭外部之殘膠被接觸到。該殘膠會延著該片 狀物或板狀物之侧面向下導流，而由容器收集該針頭流出 之所有殘膠。 显式之簡軍說明 本發—明·將依照後附圖式來說明，其中： 圖1 a到圖1 d係點膠作業之連續步驟之示意圖； 圖2係一習知點膠系統的針頭清潔裝置之示意圖； 圖3係本發明之點膠系統的針頭清潔裝置之一較佳實施 例之示意圖；及 圖4係本發明之針頭清潔動作的說明圖。 元件符號說明 11膠管 12針頭 14基板 6 13膠滴 H:\hu\Lgc\日月光中說\ASEK263(7335l).doc 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐） 517273 五、發明説明（ 1 6拉絲 22無塵紙 32片狀物 15點膠量 17殘膠 21容器 31容器 33狹長面 較佳實施例說明 圖3係本發明之點膠系統的針頭清潔裝置之— 例之示意圖。該清潔裝置包含一容器31與_片狀物32。該 片狀物32垂直固定於容器31内，並具有-位於上部之狹長 面33。利用點膠系統之參數設定可使膠管u移至該狹長面 33 ’使針頭12靠近該狹長面33之邊緣而讓殘和被碰觸 到。殘膠在接觸到該狹長面33時，因其内聚力受到破壞 而會沿著該片狀物3 2之側面向下導流，如圖4所示。本發 明可以沿著該狹長面3 3和該片狀物3 2之側面作微小的往返 運動而使殘膠17徹底被磨擦去除，且殘膠17經由容器31 收集在一起。因針頭丨2之吐出端僅稍微碰觸到該片狀物 32所以不會匕成針頭12内之膠材被迅速吸出，也就不會. 有氣泡跑入針頭1 2的管徑内的問題。 本發明亦可以有多個片狀物32同時垂直固定於容器31 内，如此可利於接觸針頭1 2的整個周圍，並將其上之殘膠 1 7徹底去除。經實際生產驗證，以纖維狀材質之片狀物3 2 (例如：無塵紙或書寫用的文件紙）擦拭殘膠1 7的效果較 佳，且該具黏稠度之殘膠1 7可被順利地導流至容器3 1内。 本發明之技術内容及技術特點巳揭示如上，然而熟悉本 H:\hu\Lgc\日月光中說\^£1^263(73351>.doc 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐） 517273 A7 B7 五、發明説明（5 ) 項技術之人士仍可能基於本發明之教示及揭示而作種種不 背離本發明精神之替換及修飾；因此，本發明之保護範圍 應不限於實施例所揭示者，而應包括各種不背離本發明之 替換及修飾，並為以下之申請專利範圍所涵蓋。 H:\hu\Lgc\ 曰月光中說\ASEK263(7335 丨>.doc 本紙張尺度適用中國國家標準(CNS) A4規格（210X297公釐）517273 V. Description of the Invention (Field of the Invention The present invention relates to a needle cleaning device and a method thereof, and particularly to a dispensing system applied to an electronic package, glue. Background of the residual invention of the needle at the ejection end of the needle and its operation method Hardware systems have been widely used in the electronics packaging industry. Many packaging processes require the use of suitable adhesive materials to achieve product protection and the combination of different substances. For example: # 晶 制 制 person silver on the substrate or lead frame Insulation glue is applied to the area of the chip and its internal wiring to complete the liquid sealing process; and the gaps between the bumps, substrates and wafers of the flip-chip bonding need to be filled with insulation glue. The important condition is the amount of glue control. It is hoped that the variation of the amount of glue discharged in each operation can be within the specified allowable range θ, because too much or too little glue will cause the product to be out of specification or prone to failure. Many factors will cause the amount of glue to be controlled Poor, the characteristics of the glue itself and the customary action of dispensing for jasmine are important factors that cause the amount of glue to be unstable. " Figures 1a to 1d are schematic diagrams of the continuous steps of the dispensing operation. A needle 12 is arranged below the rubber tube, and one end of the needle 12 is an opening for discharging the amount of glue. Before the dispensing operation, it will be confirmed whether the needle 12 is clean and wiped clean. As shown in Fig. La, there is no substance attached to the outer diameter of the needle 12, and only a small glue droplet 13 is suspended on the outlet due to gravitational pull at the discharge end. Please refer to Figure ib. When it moves down and reaches a proper distance from the substrate 14, it stops moving downwards and spit out the glue in the tube. Because the general glue is viscous, the amount of glue spit when it spit out 5 flows slowly to the four sides. H: \ hu \ Lgc \ Sun Moonlight said \ ASEK263 (73351 > .doc This paper size is applicable to Chinese National Standard (CNS) A4 specifications (210X297 male director Γ 517273) V. Description of the invention (2 The discharge end of the needle 12 is immersed in Dispensing volume 15. After the dispensing operation is completed, 'the hose 11 moves upwards to return to the starting position, at this time, "the attached plastic material and the dispensing volume 15 on the substrate 14 are prepared \ 沾 里 Α] It is gradually pulled apart and separated, as shown in Figure 1C. Finally, the needle i 2 Spit out a few days, some residues of glue 17 and dispensing of glue 15 will also be caused by the aforementioned separate actions. First, the phenomenon of wind, privacy, and glue 16 (the higher the viscosity of the glue, the more serious the phenomenon is. It can be seen that each dispensing operation will cause the residue 17 to occur, and the glue itself will slowly climb toward the end of the hose due to the capillary phenomenon on the surface of the needle mouth, so the residue 17 will accumulate more and go Adhered to the top. Residual glue 17 is accumulated on the needle 12 due to accumulation, and eventually drops on the substrate 14 or the machine due to gravity. Therefore, the glue needs to be wiped and cleaned at regular intervals. In order to remove the residual glue 丨 7 cleanly, if the residual glue 丨 7 adheres for too long, it will gradually harden and then it will be more difficult to remove. Fig. 2 is a schematic view of a conventional needle cleaning device, which is provided with a tray-like container line 2 1 1 in a dispensing operation area, and a dust-free paper 2 2 or gauze is placed in the container 2 1. When the needle 1 2 continuously dispenses glue for a fixed time, the hose 11 will move to the top of the container 2 1 according to a preset control program. The residual glue 1 7 on the discharge end of the needle 1 2 just touches the clean paper 2 2 surface. The fibrous structure of the dust-free paper 2 2 can adsorb and guide the residual glue 17 on the needle 12, but at the same time, the plastic material within the diameter of the needle 12 can be sucked out and air can run in to form air bubbles. Subsequent operations will cause void defects in the product colloid. When the voids in the colloid exceed the specified production standard, the appearance is judged to be bad and it should be scrapped. However, if such defective products are not picked out in time during the product inspection, it is easy to be subject to orders from customers for return. H: \ hu \ Lgc \ Sun Moonlight said \ ASEK263 (7335 丨) .doc This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) / 273/273 V. Description of the invention The purpose is to provide a needle cleaning device, which can remove the residual glue caused by the a point material industry on the needle. The second object of the present invention 佴 楹 ^ ^ ^ 7 is known for a reliable needle cleaning method, when, ten > After the completion of the task, you can effectively prevent the occurrence of air bubbles when you re-dispense the adhesive. In order to achieve the above purpose, the present invention provides a needle cleaning device, which is a dispensing system in a bun package. The needle cleaning device is located in Han Yigu Yi in the dispensing operation area, and another piece or plate is vertically fixed in the container. The piece has an upper narrow surface. Then the parameter is used to control the movement of the entire hose. 'Move the needle near the long side of the sheet or plate' and allow the remaining glue on the outside of the 1¾ needle to come in contact. The glue will flow down the side of the plate or plate And the container collects all the residual glue from the needle Explicit brief explanation of the present invention-Ming · will be explained in accordance with the following drawings, where: Figures 1a to 1d are schematic diagrams of the continuous steps of the dispensing operation; Figure 2 is a needle of a conventional dispensing system Schematic diagram of the cleaning device; Figure 3 is a schematic diagram of a preferred embodiment of the needle cleaning device of the dispensing system of the present invention; and Figure 4 is an explanatory diagram of the needle cleaning action of the present invention. Component symbol description 11 Hose 12 Needle 14 Substrate 6 13 glue drops H: \ hu \ Lgc \ Sun Moonlight said \ ASEK263 (7335l) .doc This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) 517273 5. Description of the invention (1 6 drawing 22 Dust-free paper 32 pieces 15 Dispensing volume 17 Residual glue 21 Container 31 Container 33 Narrow and long surface Description of the preferred embodiment FIG. 3 is a schematic diagram of an example of a needle cleaning device of the dispensing system of the present invention. The cleaning device includes a container 31 and _ sheet 32. The sheet 32 is fixed vertically in the container 31 and has an elongated surface 33 located at the upper part. Using the parameter setting of the dispensing system, the rubber tube u can be moved to the elongated surface 33 'to make the needle 12 Close to the edge of the long and narrow surface 33 Touching. When the residual glue touches the narrow surface 33, due to the destruction of its cohesive force, it will flow downward along the side of the sheet 32, as shown in Figure 4. The present invention can follow the narrow length. The surface 3 3 and the side surface of the sheet 32 make a small back and forth movement to completely remove the residual glue 17 and the residual glue 17 is collected together by the container 31. Because the ejection end of the needle 2 only touches slightly Therefore, the sheet 32 does not cause the glue in the needle 12 to be quickly sucked out, and it does not cause air bubbles to run into the diameter of the needle 12. The present invention may also have multiple sheets 32 fixed vertically in the container 31 at the same time, so as to facilitate contacting the entire periphery of the needle 12 and completely remove the residual glue 17 thereon. After actual production verification, it is better to wipe the adhesive residue 17 with a fibrous sheet 3 2 (for example: dust-free paper or writing paper), and the adhesive residue 17 with viscosity can be smoothed. The ground is diverted into the container 31. The technical content and technical characteristics of the present invention are disclosed as above, but familiar with this H: \ hu \ Lgc \ Sun Moonlight said \ ^ £ 1 ^ 263 (73351 > .doc) This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 517273 A7 B7 V. Persons of the invention (5) technology may still make various substitutions and modifications without departing from the spirit of the invention based on the teaching and disclosure of the invention; therefore, the scope of protection of the invention should not be limited to Those disclosed in the examples should include various substitutions and modifications that do not depart from the present invention, and are covered by the scope of the following patent applications: H: \ hu \ Lgc \ Yueyuezhong \ ASEK263 (7335 丨 > .doc This Paper size applies to China National Standard (CNS) A4 (210X297 mm)
裝 玎Pretend