TW202201280A - Radio-frequency identification (rfid) device thereof - Google Patents
Radio-frequency identification (rfid) device thereof Download PDFInfo
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本發明與射頻識別裝置有關,尤指一種適合安裝於金屬物品的射頻識別裝置。The present invention relates to a radio frequency identification device, in particular to a radio frequency identification device suitable for being installed on metal objects.
在將射頻識別標籤(RFID Tag)設置於金屬物品上時所面對的課題之一,是如何降低金屬干擾,或是說如何提昇該射頻識別標籤的電磁信號感應或收發能力。針對這個課題,發明人先前已提出一種可適用於金屬物品的射頻識別裝置,諸如台灣I685287專利及台灣公開第202009796號專利,然而,關於其中的感應線圈對於電磁信號的感應能力或收發能力的提昇,一直是發明人所汲汲追求者。One of the challenges faced when installing an RFID tag on a metal object is how to reduce metal interference, or how to improve the electromagnetic signal sensing or transceiving capability of the RFID tag. In response to this subject, the inventor has previously proposed a radio frequency identification device suitable for metal objects, such as Taiwan I685287 Patent and Taiwan Publication No. 202009796 Patent, however, regarding the improvement of the induction coil's inductive ability or the ability to send and receive electromagnetic signals , has always been the pursuer of the inventor.
本發明提供一種射頻識別裝置,其包括一保護體及位於該保護體內的一射頻識別電路單元。該射頻識別電路單元包括一電路板、及設於該電路板上的一射頻識別晶片與一感應線圈(可視為一天線)。該電路板具有一正面、一背面及相對的一第一側邊與一第二側邊。該電路板的該正面對該保護體的該頂面,該電路板的該背面面對該保護體的該底面,電路板的該第一側邊及第二側邊分別曝露於該保護體的該柱面。該保護體的該柱面還包含一斷裂面,該斷裂面位於該電路板的該第二側邊的上方且鄰近該第二側邊。The invention provides a radio frequency identification device, which includes a protection body and a radio frequency identification circuit unit located in the protection body. The RFID circuit unit includes a circuit board, a RFID chip and an induction coil (can be regarded as an antenna) on the circuit board. The circuit board has a front side, a back side, and a first side and a second side opposite to each other. The front surface of the circuit board faces the top surface of the protector, the back surface of the circuit board faces the bottom surface of the protector, and the first side and the second side of the circuit board are respectively exposed to the protective body. the cylinder. The cylindrical surface of the protection body further includes a fracture surface, and the fracture surface is located above the second side edge of the circuit board and is adjacent to the second side edge.
在一實施例中,該感應線圈位於該電路板的該正面,該感應線圈具有相對的一第一側面與一第二側面,且該第一側面面對該保護體的該頂面,該第二側面面對該電路板的該正面。In one embodiment, the induction coil is located on the front surface of the circuit board, the induction coil has a first side surface and a second side surface opposite to each other, and the first side surface faces the top surface of the protective body, and the first side surface faces the top surface of the protection body. The two sides face the front side of the circuit board.
較佳地,該第一側面與該保護體的該頂面之間的間距是小於或等1mm,優選是小於或等0.5mm。Preferably, the distance between the first side surface and the top surface of the protective body is less than or equal to 1 mm, preferably less than or equal to 0.5 mm.
在一實施例中,本發明之射頻識別裝置的上述保護體包括包覆該射頻識別晶片的一內保護體及包覆該內保護體、該電路板與該感應線圈的一外保護體,且該內保護體的材料為絕緣保護膠,該外保護體的材料為塑膠材料或橡膠材料。In one embodiment, the protection body of the RFID device of the present invention includes an inner protection body covering the RFID chip and an outer protection body covering the inner protection body, the circuit board and the induction coil, and The material of the inner protective body is insulating protective glue, and the material of the outer protective body is plastic material or rubber material.
在一實施例中,本發明之射頻識別裝置的上述射頻識別電路單元包括固定於該電路板的該正面的一鐵心,該鐵心包括一中間連接柱及分別連接於該中間連接柱兩端的兩側塊,該感應線圈位於該兩側塊之間且環繞該中間連接柱,且該感應線圈的兩端分別連接到該兩側塊上的焊錫,該鐵心藉由該些焊錫焊接至該電路板的該正面。In one embodiment, the above-mentioned RFID circuit unit of the RFID device of the present invention includes an iron core fixed on the front surface of the circuit board, the iron core includes a middle connecting column and two sides respectively connected to both ends of the middle connecting column. block, the induction coil is located between the two side blocks and surrounds the middle connecting column, and the two ends of the induction coil are respectively connected to the solder on the two side blocks, and the iron core is welded to the circuit board by the solder. the front.
在一實施例中,本發明之射頻識別裝置的上述感應線圈具有相對的一第三側面及一第四側面,該第三側面鄰接該第一側面,該第二側面鄰接該第三側面且位於該第一側面的對面,該第四側面鄰接該第二側面且位於該第三側面的對面,該第三側面及該第四側面分別面對該保護體的該柱面,其中,該第一側面較該第三側面寬廣。In one embodiment, the induction coil of the RFID device of the present invention has a third side surface and a fourth side surface opposite to each other, the third side surface is adjacent to the first side surface, and the second side surface is adjacent to the third side surface and located at the opposite side. Opposite to the first side surface, the fourth side surface is adjacent to the second side surface and located opposite to the third side surface, the third side surface and the fourth side surface respectively face the cylindrical surface of the protector, wherein the first side surface is The side surface is wider than the third side surface.
圖1及圖2顯示本發明之射頻識別裝置的一個較佳實施例,其包括一保護體3及位於保護體3內的一射頻識別電路單元2。保護體3具有一底面30、一頂面31、及位於底面30與頂面31之間的一柱面32。在此實施例中,保護體3的底面30的直徑小於保護體3的頂面31的直徑,且保護體3靠近底面30的部分向下漸縮地形成一圓錐段。FIG. 1 and FIG. 2 show a preferred embodiment of the RFID device of the present invention, which includes a
如圖3至圖5所示,射頻識別電路單元2包括一電路板12及一感應線圈21。電路板12具有一正面121、一背面122、及相對的一第一側邊123與一第二側邊124。As shown in FIG. 3 to FIG. 5 , the
感應線圈21(可視為天線)設於電路板12的正面121,且感應線圈21具有相對的一第一側面211與一第二側面212,及相對的一第三側面213與一第四側面214。第三側面213鄰接第一側面211。第二側面212鄰接第三側面213且位於第一側面211的對面。第四側面214鄰接第二側面212且位於第三側面213的對面。其中,感應線圈21的第一側面211與電路板12的正面121面向同一方向,第三側面213與電路板12的第一側邊123面向同一方向,第二側面212面對電路板12的正面121,第四側面214與電路板12的第二側邊124朝向同一方向。在此實施例中,第一側面211的長寬相等於第二側面212,第三側面213的長寬相等於第四側面214,第三側面213與第一側面211的長度相同,第三側面213的寬度小於第一側面211,換言之,感應線圈21的第一側面211比第三側面213寬廣,也比第四側面214寬廣。The induction coil 21 (can be regarded as an antenna) is disposed on the
在此實施例中,如圖3所示,射頻識別電路單元2包括設於電路板12的背面122的一射頻識別晶片22。此外,射頻識別電路單元2可再包括一鐵心23,且如圖2所示,鐵心23設於電路板12的正面121,感應線圈21環繞鐵心23。其中,射頻識別晶片22係為中、高頻段的射頻識別晶片,可選用NXP公司的I-Code-SLI、NTag213、NTag215、NTag216、Mifare等高頻射頻識別晶片、或意法半導體公司(ST)的ST25TV512、ST25TV02K、ST25TV16k等高頻射頻識別晶片、或 Temic公司的 T5777、T5778等低頻射頻識別晶片,EM公司的EM4102 、EM4200、EM4069 等低頻射頻識別晶片,在此實施例中是選擇13.56MHz頻段的高頻射頻識別晶片。In this embodiment, as shown in FIG. 3 , the
在此實施例中,如圖6所示,保護體3還包括包覆射頻識別晶片22的一內保護體300及包覆內保護體300的一外保護體302。內保護體300的材料為絕緣保護膠。外保護體302為非導電性材料,較佳可由塑膠材料或橡膠材料製成,例如以耐熱約攝氏200度的塑膠材料射出成形。在此實施例中,外保護體302的材料可選擇ABS、PP、PE、PPN、添加玻璃纖維的聚酰胺(例如PA6 GF30)......等塑膠材料。In this embodiment, as shown in FIG. 6 , the
再如圖6所示,電路板12的正面121面對保護體3的頂面31,電路板12的背面122面對保護體3的底面30,電路板12的第一側邊123面對保護體3的柱面32,感應線圈21的第一側面211面對保護體3的頂面31,感應線圈21的第二側面212面對電路板12的正面121,感應線圈21的第三側面213及第四側面214分別面對保護體3的柱面32。由於射頻識別電路單元2可水平置放或傾斜置放於保護體3內,故所述的「面對」不限於圖中所示的情況,尚包括「傾斜地面對」。As shown in FIG. 6 , the
如圖7及圖8所示,本發明之射頻識別裝置於實際運用時,是被塞入一物品5的一凹洞51內,該物品可具有金屬性表面、也可以是一金屬體,但不以此為限,例如,也可以是木製或塑膠製物品。如此,感應線圈21的第一側面211係面對凹洞51的洞口510,或是說感應線圈21的第一側面211是面對該物品5的外面,使得一射頻識別感應主機6易於感應讀取射頻識別晶片22。在此實施例中,感應線圈21的第一側面211最寬廣且朝向外面,這將提升感應線圈21對電磁波信號的感應能力(或收發能力)。在物品5具有金屬表面或物品5為金屬體的情形下,感應線圈21的感應能力的提昇即相當於金屬干擾減少,可確保射頻識別感應主機6對射頻識別晶片22的正常讀取,降低讀取不到或讀取錯誤的情形。As shown in FIG. 7 and FIG. 8 , the RFID device of the present invention is inserted into a
如圖9所示,一基板1的兩相對邊各凸出多個本發明所述的射頻識別電路單元2。每一個射頻識別電路單元2的電路板12都是基板1的一部分,基板1是以印刷電路板製程來製作的。在圖中的每一塊電路板12都焊接上所述的射頻識別晶片22與鐵心23(已纏繞上感應線圈21)之後,即獲得圖9中所示的基板1。接著,進行一封裝作業,亦即:於射頻識別晶片22上覆蓋絕緣保護膠以形成上述內保護體300,然後,以塑膠射出方式使每一個射頻識別電路單元2分別被塑膠材料包覆住以形成上述的外保護體302,如此,基板1上的每一個射頻識別電路單元2就分別被上述的保護體3所包覆,且如圖10所示,每一個保護體3的柱面32都連接到基板1。然後,將每一個保護體3的電路板12從基板1上斷開,就會獲得多個如圖1及6所示的射頻識別裝置,且每一個射頻識別裝置的電路板12的第二側邊124都會曝露於保護體3的外保護體302的柱面32。As shown in FIG. 9 , two opposite sides of a
在此實施例中,鐵心23係為一工字型鐵心,且如圖11所示,鐵心23包括一中間連接柱231及分別連接於中間連接柱231兩端的兩側塊232,感應線圈21位於兩側塊232之間且環繞中間連接柱231,感應線圈21的兩端分別連接到兩側塊232上的焊錫233。鐵心23藉由該些焊錫233焊接至電路板12的正面121上的兩焊墊(圖中未示),以使鐵心23固定於電路板12的正面121,及使感應線圈21電性連接至射頻識別晶片22。In this embodiment, the
圖12至圖14顯示本發明之射頻識別裝置的另一較佳實施例,其大致相同於上述實施例中,不同之處在於除了電路板12的第二側邊124曝露於保護體3的柱面32之外,電路板12的第一側邊123也曝露於保護體3的柱面32,這主要是因為該另一較佳實施例所使用的基板1a不同於上述實施例所導致的結果。更詳而言之,如圖15及圖16所示,基板1a是以印刷電路板製程來製作的,每一個射頻識別電路單元2的電路板12都是基板1的一部分。其中,基板1a包括一中間板111a、分別位於中間板111a兩相邊的兩側板112a、多根連接中間板111a與其中一側板112a的第一連接桿113a、及多根連接中間板111a與另一側板112a的第二連接桿114a,每一第一連接桿113a各具有一較寬部分作為電路板12,每一第二連接桿114a亦各具有一較寬部分作為電路板12。每一電路板12的正面及背面分別設置一個上述鐵心23及一個上述射頻識別晶片22,每一鐵心23均纏繞一個上述感應線圈21。如此,每一個電路板12及位於其上的感應線圈21、射頻識別晶片22與鐵心23就構成一個射頻識別電路單元2。接著,於每一射頻識別晶片22上覆蓋絕緣保護膠以形成上述內保護體300,然後,以塑膠射出方式使每一個射頻識別電路單元2分別被塑膠材料包覆住以形成上述的外保護體302,如此,基板1a上的每一個射頻識別電路單元2就分別被上述的保護體3所包覆,且如圖17所示,每一個保護體3的柱面32都連接到基板1a。然後,將每一個電路板12從基板1a上斷開,就會獲得多個如圖12至圖14所示的射頻識別裝置,且每一個射頻識別裝置的電路板12的第一側邊123與第二側邊124都會曝露於保護體3的柱面32。12 to 14 show another preferred embodiment of the RFID device of the present invention, which is substantially the same as the above-mentioned embodiment, except that the
在該另一實施例中,在射出成形每一個外保護體302的同時,還以該塑膠材料一併成形一骨架303,以使每一個外保護體302都連接到骨架303。每一個電路板12從基板1a上斷開時,每一個外保護體302也一併從骨架303斷開,使得每一個保護體3上留下一個斷裂面304,斷裂面304 位於電路板12的第二側邊214的上方且鄰近第二側邊214。In this other embodiment, when each
基板1a的上述配置,可確保電路板12在上述射出成形過程中不會發生歪斜,茲說明如后:已配置上述射頻識別電路單元2的基板1a被放入一塑膠射出模具(圖中未示)之後,中間板111a及兩側板112a會被該塑膠射出模具合模後的上模塊與下模塊夾住,故基板1a此時被平穩地保持在一水平狀態。在熔融的塑膠材料被注入該塑膠射出模具之後,該熔融的塑膠材料會從基板1a的透孔305進入,並沿著該塑膠射出模具的內部流道流入每一個模窩內,每一個模窩是用來對應形成每一個外保護體302的外形。完成前述塑膠射出程序之後,就能從該塑膠射出模具取出已連接多個保護體3的基板1a,一如圖17所示,其中,每一骨架303的形狀是由該塑膠射出模具的內部流道造成的,且每一骨架303各連接四個保護體3,但不以此為限。The above-mentioned configuration of the
此外,為了讓感應線圈21具有較佳的電磁波感應能力(或信號收發能力),感應線圈21的第一側面211(亦即頂面)與保護體3的頂面31之間的間距G是小於或等1mm,較佳是小於或等於0.5mm。In addition, in order for the
1:基板
12:電路板
121:正面
122:背面
123:第一側邊
124:第二側邊
2:射頻識別電路單元
21:感應線圈
22:射頻識別晶片
23:鐵心
211:第一側面
212:第二側面
213:第三側面
214:第四側面
231:中間連接柱
232:側塊
233:焊錫
3:保護體
30:底面
300:內保護體
302:外保護體
303:骨架
304:斷裂面
305:透孔
31:頂面
32:柱面
5:物品
51:凹洞
510:洞口
6:射頻識別感應主機
1a:基板
111a:中間板
112a:側板
113a:第一連接桿
114a:第二連接桿1: Substrate
12: circuit board
121: front
122: Back
123: First side
124: Second side
2: RFID circuit unit
21: Induction coil
22: RFID chip
23: Iron Heart
211: The first side
212: Second side
213: Third side
214: Fourth side
231: Intermediate connecting column
232: Side Block
233: Solder
3: Protector
30: Bottom surface
300: Inner Protector
302: Outer Protector
303: Skeleton
304: Fracture Surface
305: Through hole
31: Top surface
32: Cylinder
5: Items
51: Hole
510: hole
6:
圖1顯示本發明射頻識別裝置的一個較佳實施例的立體圖。 圖2顯示本發明該較佳實施例的俯視圖。 圖3顯示本發明該較佳實施例的射頻識別電路單元的立體圖。 圖4顯示本發明該射頻識別電路單元的後視圖。 圖5顯示本發明該射頻識別電路單元的另一立體圖 圖6顯示本發明該較佳實施例的A-A斷面圖。 圖7及圖8顯示本發明該較佳實施例使用於一金屬製物品的情形。 圖9及圖10顯示本發明用於製作該較佳實施例的一基板及其在一封裝作業前、後所呈現的狀態。 圖11顯示本發明該較佳實施例的鐵心與感應線圈的仰視圖。 圖12顯示本發明射頻識別裝置的另一較佳實施例的立體圖。 圖13顯示本發明該另一較佳實施例的俯視圖。 圖14顯示本發明該另一較佳實施例的B-B斷面圖。 圖15至圖17用於說明該另一較佳實施例的製造過程。FIG. 1 shows a perspective view of a preferred embodiment of the radio frequency identification device of the present invention. Figure 2 shows a top view of the preferred embodiment of the present invention. FIG. 3 shows a perspective view of the RFID circuit unit of the preferred embodiment of the present invention. FIG. 4 shows a rear view of the RFID circuit unit of the present invention. FIG. 5 shows another perspective view of the RFID circuit unit of the present invention Figure 6 shows the A-A sectional view of the preferred embodiment of the present invention. FIG. 7 and FIG. 8 show the case where the preferred embodiment of the present invention is applied to a metal article. FIG. 9 and FIG. 10 show a substrate used for fabricating the preferred embodiment of the present invention and its state before and after a packaging operation. FIG. 11 shows a bottom view of the iron core and the induction coil of the preferred embodiment of the present invention. FIG. 12 shows a perspective view of another preferred embodiment of the radio frequency identification device of the present invention. Figure 13 shows a top view of the other preferred embodiment of the present invention. FIG. 14 shows a B-B sectional view of the other preferred embodiment of the present invention. 15 to 17 are used to illustrate the manufacturing process of the other preferred embodiment.
12:電路板12: circuit board
121:正面121: front
123:第一側邊123: First side
124:第二側邊124: Second side
2:射頻識別電路單元2: RFID circuit unit
3:保護體3: Protector
30:底面30: Bottom surface
31:頂面31: Top surface
Claims (8)
Priority Applications (1)
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TW110118928A TWI782543B (en) | 2020-06-18 | 2020-06-18 | Radio-frequency identification (rfid) device thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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TW110118928A TWI782543B (en) | 2020-06-18 | 2020-06-18 | Radio-frequency identification (rfid) device thereof |
Publications (2)
Publication Number | Publication Date |
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TW202201280A true TW202201280A (en) | 2022-01-01 |
TWI782543B TWI782543B (en) | 2022-11-01 |
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TW110118928A TWI782543B (en) | 2020-06-18 | 2020-06-18 | Radio-frequency identification (rfid) device thereof |
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Family Cites Families (3)
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JP3711026B2 (en) * | 2000-07-17 | 2005-10-26 | 株式会社ハネックス | RFID tag installation structure, RFID tag installation method, and RFID tag communication method |
TWM385757U (en) * | 2009-12-25 | 2010-08-01 | Claridy Solutions Inc | Device containing radio frequency identification and anti-counterfeit functions |
TWI784042B (en) * | 2018-08-21 | 2022-11-21 | 辰晧電子股份有限公司 | Radio frequency identification electronic device and method thereof, and the article that can sense radio frequency electronic signals |
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