TW202312793A

TW202312793A - Retractable circuit board

Info

Publication number: TW202312793A
Application number: TW110134711A
Authority: TW
Inventors: 鐘浩文; 吳金成; 黃美華; 李彪
Original assignee: 大陸商鵬鼎控股（深圳）股份有限公司; 大陸商慶鼎精密電子（淮安）有限公司; 鵬鼎科技股份有限公司
Priority date: 2021-09-07
Filing date: 2021-09-16
Publication date: 2023-03-16
Also published as: CN115776757A; TWI804990B

Abstract

A retractable circuit board includes a retractable area extending along a first direction. The retractable area includes an elastic dielectric layer and a plurality of retractable wiring lines spaced from each other and embedded in the elastic dielectric layer. Each retractable wiring line includes at least one bending portion and an extension portion connecting each of both ends of each bending portion. The retractable area further includes a reinforcing block corresponding to each bending portion. The bending portion is wrapped by the reinforcing block to reduce a risk of breakage of the retractable wiring lines.

Description

可伸縮電路板stretchable circuit board

本申請涉及電路板領域，尤其涉及一種可伸縮電路板。The present application relates to the field of circuit boards, in particular to a retractable circuit board.

隨著機器人、體表穿戴電子、新型醫療時代的到來，對電路板等的可伸縮性及捲曲性要求越來越高。然，習知的電路板的可伸縮性能有限，在容易在拉伸後出現線路斷裂的情形，進而影響產品的使用壽命。With the advent of robots, body surface wearable electronics, and new medical eras, the requirements for scalability and curlability of circuit boards are getting higher and higher. However, the conventional circuit board has limited stretchability, and it is easy to break the circuit after being stretched, thereby affecting the service life of the product.

有鑑於此，本申請提供一種有利於降低線路斷裂風險的可伸縮電路板。In view of this, the present application provides a stretchable circuit board which is beneficial to reduce the risk of circuit breakage.

一種可伸縮電路板，包括沿第一方向延伸的可伸縮區，所述可伸縮區包括彈性介電層及複數個間隔的且內嵌於所述彈性介電層中的可伸縮線路，每一所述可伸縮線路包括至少一彎折部及連接每一所述彎折部二端的延伸部，所述可伸縮區還包括對應每一所述彎折部設置的補強塊，所述彎折部被所述補強塊包覆。A stretchable circuit board, comprising a stretchable region extending along a first direction, the stretchable region comprising an elastic dielectric layer and a plurality of spaced stretchable circuits embedded in the elastic dielectric layer, each The stretchable circuit includes at least one bent portion and an extension portion connecting two ends of each bent portion, and the stretchable region further includes a reinforcement block corresponding to each bent portion, and the bent portion Covered by the reinforcing block.

作為本申請的一種方案，所述補強塊包括凹槽，所述延伸部與被所述補強塊包覆的所述彎折部連接的端部位於所述凹槽中，所述彈性介電層填充所述凹槽與所述延伸部的端部之間。As a solution of the present application, the reinforcing block includes a groove, the end of the extension part connected to the bent part covered by the reinforcing block is located in the groove, and the elastic dielectric layer Filling between the groove and the end of the extension.

作為本申請的一種方案，所述凹槽的深度大於或等於1mm。As a solution of the present application, the depth of the groove is greater than or equal to 1 mm.

作為本申請的一種方案，所述延伸部自所述凹槽的底壁伸出，所述凹槽的內側壁與對應的所述延伸部在所述第一方向上的間距大於或等於0.2mm。As a solution of the present application, the extension part protrudes from the bottom wall of the groove, and the distance between the inner side wall of the groove and the corresponding extension part in the first direction is greater than or equal to 0.2mm .

作為本申請的一種方案，所述補強塊還包括一凸起，所述凸起自所述凹槽的底壁凸伸，且位於連接每一被所述補強塊包覆的所述彎折部二端的延伸部之間。As a solution of the present application, the reinforcing block further includes a protrusion, which protrudes from the bottom wall of the groove, and is positioned to connect each of the bending parts covered by the reinforcing block. between the extensions at both ends.

作為本申請的一種方案，所述凸起背離所述凹槽底壁的一端與相鄰的所述延伸部在所述第一方向上的最小間距大於或等於0.2mm。As a solution of the present application, the minimum distance between the end of the protrusion facing away from the bottom wall of the groove and the adjacent extension portion in the first direction is greater than or equal to 0.2 mm.

作為本申請的一種方案，複數個所述可伸縮線路沿垂直於所述第一方向的第二方向間隔分佈。As a solution of the present application, the plurality of stretchable lines are distributed at intervals along a second direction perpendicular to the first direction.

作為本申請的一種方案，所述可伸縮電路板在沿所述第一方向拉伸前，每一所述延伸部與所述第一方向之間的最小的夾角α滿足：60°≤α≤90°。As a solution of the present application, before the stretchable circuit board is stretched along the first direction, the minimum angle α between each of the extension parts and the first direction satisfies: 60°≤α≤ 90°.

作為本申請的一種方案，所述可伸縮電路板在沿所述第一方向拉伸後，所述夾角α滿足：α≥45°。As a solution of the present application, after the stretchable circuit board is stretched along the first direction, the included angle α satisfies: α≥45°.

作為本申請的一種方案，所述可伸縮區為可伸縮的柔性單層線路板、雙層線路線路板或者多層線路線路板。As a solution of the present application, the stretchable area is a stretchable flexible single-layer circuit board, a double-layer circuit board or a multi-layer circuit board.

作為本申請的一種方案，連接於所述彎折部一端的所述延伸部的端部，自對應的所述補強塊先朝靠近連接該彎折部另一端的所述延伸部的方向延伸。As a solution of the present application, the end of the extension part connected to one end of the bending part first extends from the corresponding reinforcing block toward the direction of the extension part connected to the other end of the bending part.

作為本申請的一種方案，所述可伸縮區還包括複數個加強塊，每一所述延伸部穿過一所述加強塊。As a solution of the present application, the stretchable area further includes a plurality of reinforcement blocks, and each of the extension parts passes through one of the reinforcement blocks.

作為本申請的一種方案，每一所述加強塊沿垂直於所述第一方向的第二方向間隔的相對二表面分別設有一凹部，所述延伸部自所述加強塊的二所述凹部穿過；所述彈性介電層填充所述凹部。As a solution of the present application, each of the reinforcement blocks is respectively provided with a concave portion on two opposite surfaces spaced along the second direction perpendicular to the first direction, and the extension portion passes through the two concave portions of the reinforcement block. and the elastic dielectric layer fills the recess.

作為本申請的一種方案，所述可伸縮區在所述第一方向包括第一端及第二端，所述可伸縮電路板還包括電連接所述第一端的第一電路區及電連接所述第二端的第二電路區，所述第一電路區及所述第二電路區分別選自柔性電路板、軟硬結合電路板或者剛性電路板中的一種。As a solution of the present application, the stretchable region includes a first end and a second end in the first direction, and the stretchable circuit board further includes a first circuit region electrically connected to the first end and an electrical connection The second circuit area at the second end, the first circuit area and the second circuit area are respectively selected from one of a flexible circuit board, a rigid-flex circuit board or a rigid circuit board.

本申請的所述可伸縮電路板，其可伸縮線路中對應所述彎折部設置補強塊，所述彎折部被所述補強塊包覆，在所述可伸縮區被拉伸時，所述補強塊的設置能夠降低所述彎折部中彎折角或者弧角處的應力，從而降低所述可伸縮線路在所述彎折部的彎折角或者弧角處斷裂的風險。In the stretchable circuit board of the present application, a reinforcing block is provided corresponding to the bending part in the stretchable circuit, and the bending part is covered by the reinforcing block. When the stretchable area is stretched, the The setting of the reinforcing block can reduce the stress at the bending angle or arc corner of the bending portion, thereby reducing the risk of the stretchable circuit breaking at the bending angle or arc angle of the bending portion.

下面將結合本申請實施例中的圖式，對本申請實施例中的技術方案進行清楚、完整地描述，顯然，所描述的實施例僅僅係本申請一部分實施例，而不係全部的實施例。The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them.

除非另有定義，本文所使用的所有的技術及科學術語與屬於本申請的技術領域的技術人員通常理解的含義相同。本文中在本申請的說明書中所使用的術語只係為了描述具體的實施例的目的，不係旨在於限制本申請。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the application. The terms used herein in the description of the application are for the purpose of describing specific embodiments only, and are not intended to limit the application.

下面結合圖式，對本申請的一些實施方式作詳細說明。在不衝突的情況下，下述的實施例/實施方式及實施例/實施方式中的特徵可相互組合。Some implementations of the present application will be described in detail below with reference to the drawings. In the case of no conflict, the following embodiments/implementations and features in the embodiments/implementations can be combined with each other.

請參閱圖1，本申請一實施方式的可伸縮電路板100，包括沿第一方向X延伸的可伸縮區10。所述可伸縮區10能夠實現伸縮、彎曲及扭曲等各種變形。Please refer to FIG. 1 , a stretchable circuit board 100 according to an embodiment of the present application includes a stretchable region 10 extending along a first direction X. As shown in FIG. The stretchable region 10 can realize various deformations such as stretching, bending and twisting.

請結合參閱圖2及圖3，所述可伸縮區10包括彈性介電層11及複數個間隔的可伸縮線路13，複數個所述可伸縮線路13內嵌於所述彈性介電層11中。在本實施方式中，複數個所述可伸縮線路13可被所述彈性介電層11完全包覆。所述彈性介電層11為透明彈性材料。在一些實施方式中，所述彈性介電層11亦可為半透明或者非透明彈性材料。Please refer to FIG. 2 and FIG. 3 in conjunction, the stretchable region 10 includes an elastic dielectric layer 11 and a plurality of spaced apart stretchable circuits 13, and a plurality of the stretchable circuits 13 are embedded in the elastic dielectric layer 11 . In this embodiment, the plurality of stretchable circuits 13 can be completely covered by the elastic dielectric layer 11 . The elastic dielectric layer 11 is a transparent elastic material. In some embodiments, the elastic dielectric layer 11 can also be a translucent or non-transparent elastic material.

具體的，在本實施方式中，複數個所述可伸縮線路13沿垂直於所述第一方向X的第二方向Y間隔分佈。在一些實施方式中，請結合參閱圖4，部分所述可伸縮線路13在所述第一方向X及所述第二方向Y所在平面方向分佈從而形成一可伸縮線路層130，多個所述可伸縮線路層130可在垂直於所述第一方向X及所述第二方向Y的第三方向Z間隔。即所述可伸縮區10可為雙層線路線路板或者多層線路線路板。本實施方式中，所述可伸縮區10以僅包括一所述可伸縮線路層130為例進行說明，即所述可伸縮區10為一可伸縮的柔性單層線路板。Specifically, in this embodiment, the plurality of stretchable circuits 13 are distributed at intervals along the second direction Y perpendicular to the first direction X. In some embodiments, please refer to FIG. 4 , part of the stretchable circuits 13 are distributed in the direction of the plane where the first direction X and the second direction Y are located to form a stretchable circuit layer 130, a plurality of the The stretchable circuit layer 130 can be spaced apart in a third direction Z perpendicular to the first direction X and the second direction Y. That is, the stretchable area 10 can be a double-layer circuit board or a multi-layer circuit board. In this embodiment, the stretchable region 10 is described as an example including only one stretchable circuit layer 130 , that is, the stretchable region 10 is a stretchable flexible single-layer circuit board.

每一所述可伸縮線路13包括至少一彎折部131及連接每一所述彎折部131二端的延伸部133。Each stretchable circuit 13 includes at least one bent portion 131 and an extension portion 133 connecting two ends of each bent portion 131 .

每一所述彎折部131包括至少一彎折角（圖未標）或者弧角（圖未標）。如圖3所示，每一所述彎折部131可包括二個彎折角。如圖5所示，每一所述彎折部131可包括一個彎折角。當一所述可伸縮線路13中的所述彎折部131均包含一個彎折角時，該可伸縮線路13可呈鋸齒狀。如圖6所示，每一所述彎折部131可包括一弧角。當一所述可伸縮線路13中的所述彎折部131均包含一個弧角時，該可伸縮線路13呈波浪狀。可理解的，當一所述可伸縮線路13包括多個所述彎折部131時，同一所述可伸縮線路13中的任意二所述彎折部131的結構可相同亦可不同。Each of the bending portions 131 includes at least one bending angle (not shown in the figure) or arc angle (not shown in the figure). As shown in FIG. 3 , each of the bent portions 131 may include two bent corners. As shown in FIG. 5 , each of the bent portions 131 may include a bent angle. When the bending portion 131 of a stretchable circuit 13 includes a bending angle, the stretchable circuit 13 can be in a zigzag shape. As shown in FIG. 6 , each of the bent portions 131 may include an arc. When the bending portions 131 of a stretchable line 13 include an arc angle, the stretchable line 13 is in a wave shape. Understandably, when one stretchable circuit 13 includes multiple bent portions 131 , the structures of any two bent portions 131 in the same stretchable circuit 13 may be the same or different.

請結合參閱圖3，每一所述延伸部133與所述第一方向X相交。優選的，所述可伸縮區10沿所述第一方向X被拉伸前，每一所述延伸部133與所述第一方向X之間的最小的夾角α滿足：60°≤α≤90°；所述可伸縮區10沿所述第一方向X被拉伸後，所述夾角α滿足：α≥45°，使得所述延伸部133在所述第二方向Y上具有較大的截面積，從而有利於抵抗拉伸變形，滿足更高強度的拉伸需求。Please refer to FIG. 3 , each of the extension portions 133 intersects with the first direction X. Referring to FIG. Preferably, before the stretchable region 10 is stretched along the first direction X, the minimum angle α between each extension portion 133 and the first direction X satisfies: 60°≤α≤90° °; after the stretchable region 10 is stretched along the first direction X, the included angle α satisfies: α≥45°, so that the extension part 133 has a larger cut-off in the second direction Y Area, which is conducive to resisting tensile deformation and meeting the demand for higher strength stretching.

連接同一所述彎折部131的二所述延伸部133與所述第一方向X之間且相向的夾角分別為θ1及θ2，其中，θ1可與θ2相等亦可不相等。The opposite angles between the two extension portions 133 connecting the same bending portion 131 and the first direction X are θ1 and θ2 respectively, wherein θ1 and θ2 may or may not be equal.

所述可伸縮區10還包括對應每一所述彎折部131設置的補強塊15。所述彎折部131被所述補強塊15包覆，在所述可伸縮區10被拉伸時，所述補強塊15的設置能夠降低所述彎折部131中彎折角或者弧角處的應力，從而降低所述可伸縮線路13在所述彎折部131的彎折角或者弧角處斷裂的風險。The stretchable region 10 further includes a reinforcement block 15 corresponding to each of the bending portions 131 . The bending portion 131 is covered by the reinforcing block 15, and when the stretchable region 10 is stretched, the setting of the reinforcing block 15 can reduce the bending angle or arc angle in the bending portion 131. Stress, thereby reducing the risk of the stretchable circuit 13 breaking at the bending angle or arc angle of the bending portion 131 .

在一些實施方式中，如圖7所示，每一所述補強塊15可僅包覆一所述彎折部131。在一些實施方式中，如圖3所示，每一所述補強塊15可包覆多個所述可伸縮線路13中沿所述第二方向Y間隔且對應設置的所述彎折部131。In some implementations, as shown in FIG. 7 , each reinforcing block 15 can cover only one bending portion 131 . In some implementations, as shown in FIG. 3 , each of the reinforcing blocks 15 can cover a plurality of the bending portions 131 that are spaced along the second direction Y and are correspondingly arranged in the stretchable circuit 13 .

在一些實施方式中，優選的，所述補強塊15可包括凹槽151，所述延伸部133與被所述補強塊15包覆的所述彎折部131連接的端部位於所述凹槽151中。所述彈性介電層11填充所述凹槽151與所述延伸部133的端部之間，從而有利於在所述可伸縮區10被拉伸時減小應力的集中，降低所述可伸縮線路13斷裂的風險。In some embodiments, preferably, the reinforcing block 15 may include a groove 151, and the end of the extending portion 133 connected to the bent portion 131 covered by the reinforcing block 15 is located in the groove. 151 in. The elastic dielectric layer 11 fills the gap between the groove 151 and the end of the extension part 133, thereby reducing stress concentration when the stretchable region 10 is stretched, reducing the stretchability. Risk of line 13 breaking.

更優選的，所述凹槽151的深度可大於或等於1mm，進而進一步地有利於藉由所述彈性介電層11填充於所述凹槽151與所述延伸部133的端部之間的部分抵消部分所述可伸縮區10被拉伸時產生的應力，從而有利於減小應力的集中，降低所述可伸縮線路13斷裂的風險。More preferably, the depth of the groove 151 may be greater than or equal to 1 mm, which further facilitates the filling between the groove 151 and the end of the extension portion 133 by the elastic dielectric layer 11 Partially offset the stress generated when part of the stretchable region 10 is stretched, thereby reducing stress concentration and reducing the risk of breakage of the stretchable circuit 13 .

所述補強塊15對應所述凹槽151處在所述第一方向X上的厚度D1優選為大於或等於2mm，即所述凹槽151在所述第一方向X上的壁厚優選為大於或等於2mm，從而有利於限制所述凹槽151內的所述彈性介電層11的過大形變，進而降低該區域線路斷裂的風險。The thickness D1 of the reinforcing block 15 corresponding to the groove 151 in the first direction X is preferably greater than or equal to 2mm, that is, the wall thickness of the groove 151 in the first direction X is preferably greater than Or equal to 2mm, which is beneficial to limit the excessive deformation of the elastic dielectric layer 11 in the groove 151, thereby reducing the risk of circuit breakage in this area.

更優選的，當所述延伸部133自所述凹槽151的底壁伸出時，所述凹槽151的內側壁與對應的所述延伸部133在所述第一方向X上的間距可大於或等於0.2mm，從而進一步地有利於藉由所述彈性介電層11填充於所述凹槽151與所述延伸部133的端部之間的部分抵消部分所述可伸縮區10被拉伸時產生的應力，從而有利於減小應力的集中，降低所述可伸縮線路13斷裂的風險。More preferably, when the extension part 133 protrudes from the bottom wall of the groove 151, the distance between the inner side wall of the groove 151 and the corresponding extension part 133 in the first direction X can be greater than or equal to 0.2mm, which further facilitates the elastic dielectric layer 11 to fill the part between the groove 151 and the end of the extension part 133 to offset the part of the stretchable region 10 being pulled The stress generated during stretching is beneficial to reduce the concentration of stress and reduce the risk of breakage of the stretchable circuit 13 .

在一些實施方式中，請結合參閱圖7及圖8，所述補強塊15還可包括一凸起153，所述凸起153自所述凹槽151的底壁凸伸，且位於連接每一被所述補強塊15包覆的所述彎折部131二端的延伸部133之間，以便於在所述凹槽151體積較大時，降低被拉伸時所述彈性介電層11填充於所述凹槽151中的部分的形變，從而降低所述可伸縮線路13斷裂的風險。In some embodiments, please refer to FIG. 7 and FIG. 8 , the reinforcing block 15 may further include a protrusion 153 protruding from the bottom wall of the groove 151 and located at the connection position of each Between the extension parts 133 at the two ends of the bent part 131 covered by the reinforcing block 15, so that when the volume of the groove 151 is relatively large, the filling of the elastic dielectric layer 11 when being stretched is reduced. The deformation of the portion in the groove 151 reduces the risk of breaking the stretchable circuit 13 .

優選的，所述凸起153背離所述凹槽151底壁的一端與相鄰的所述延伸部133在所述第一方向X上的最小間距可大於或等於0.2mm，從而進一步地有利於藉由所述彈性介電層11填充於所述凸起153與所述延伸部133的端部之間的部分抵消部分所述可伸縮區10被拉伸時產生的應力，從而有利於減小應力的集中，降低所述可伸縮線路13斷裂的風險。此時，所述延伸部133可從所述凹槽151的底壁或者所述凹槽151的內側壁伸出。Preferably, the minimum distance between the end of the protrusion 153 away from the bottom wall of the groove 151 and the adjacent extension 133 in the first direction X may be greater than or equal to 0.2 mm, which further facilitates The part of the elastic dielectric layer 11 filled between the protrusion 153 and the end of the extension part 133 offsets part of the stress generated when the stretchable region 10 is stretched, thereby helping to reduce The concentration of stress reduces the risk of breakage of the stretchable circuit 13 . At this time, the extension portion 133 may protrude from the bottom wall of the groove 151 or the inner side wall of the groove 151 .

在一些實施方式中，請結合參閱圖9及圖10，連接於所述彎折部131一端的所述延伸部133的端部，自對應的所述補強塊15先朝靠近連接該彎折部131另一端的所述延伸部133的方向延伸。如圖9及圖10中，每一所述延伸部133與所述彎折部131連接的端部可自對應的所述補強塊15先朝靠近該補強塊15沿所述第二方向Y的中心線O-O的方向延伸，從而在所述可伸縮區10被拉伸時，使得每一所述延伸部133的端部自對應的所述補強塊15的伸出方向與的受力方向一致或者相近，降低所述延伸部133的端部的剪切應力，進而降低所述可伸縮線路13斷裂的風險。此時，所述凹槽151可存在亦可不存在，所述凸起153可存在亦可不存在。In some embodiments, please refer to FIG. 9 and FIG. 10 , the end of the extension portion 133 connected to one end of the bending portion 131 is first connected to the bending portion from the corresponding reinforcing block 15 . 131 extends in the direction of the extension part 133 at the other end. As shown in FIG. 9 and FIG. 10 , the end of each extending portion 133 connected to the bent portion 131 can move from the corresponding reinforcing block 15 toward the direction of the reinforcing block 15 along the second direction Y. The direction of the central line O-O is extended, so that when the stretchable region 10 is stretched, the protruding direction of the end of each of the extension parts 133 from the corresponding reinforcing block 15 is consistent with the force direction or Similarly, the shearing stress at the end of the extension portion 133 is reduced, thereby reducing the risk of breaking the stretchable circuit 13 . At this time, the groove 151 may or may not exist, and the protrusion 153 may or may not exist.

在一些實施方式中，請結合參閱圖11，所述可伸縮區10還可包括複數個加強塊17。每一所述延伸部133穿過一所述加強塊17。In some embodiments, please refer to FIG. 11 , the stretchable region 10 may further include a plurality of reinforcing blocks 17 . Each of the extending portions 133 passes through a reinforcing block 17 .

在一些實施方式中，如圖11所示，每一所述加強塊17可僅被一所述延伸部133穿過。在一些實施方式中，如圖12所示，每一所述加強塊17可被自同一所述補強塊15伸出的且相較於所述第二方向Y朝同側傾斜的多個所述延伸部133穿過。In some embodiments, as shown in FIG. 11 , each of the reinforcing blocks 17 can only be passed through by one of the extending portions 133 . In some embodiments, as shown in FIG. 12 , each of the reinforcing blocks 17 can be extended from the same reinforcing block 15 and inclined towards the same side compared to the second direction Y. The extension 133 passes through.

優選的，每一所述加強塊17沿所述第二方向Y間隔的相對二表面可分別設有一凹部170，所述延伸部133自所述加強塊17的二所述凹部170穿過。所述彈性介電層11填充所述凹部170，從而有利於進一步地降低所述可伸縮線路13斷裂的風險。Preferably, two opposite surfaces of each reinforcement block 17 spaced apart along the second direction Y may respectively have a recess 170 , and the extension portion 133 passes through the two recesses 170 of the reinforcement block 17 . The elastic dielectric layer 11 fills the recess 170 , so as to further reduce the risk of breaking the stretchable circuit 13 .

請參閱圖1，所述可伸縮區10在所述第一方向X包括第一端（圖未標）及第二端（圖未標）。所述可伸縮電路板100還可包括第一電路區30，所述第一電路區30電連接於所述可伸縮區10的第一端。所述第一電路區30可為柔性電路板、軟硬結合電路板或者剛性電路板。Please refer to FIG. 1 , the stretchable region 10 includes a first end (not shown) and a second end (not shown) in the first direction X. The stretchable circuit board 100 may further include a first circuit area 30 electrically connected to the first end of the stretchable area 10 . The first circuit area 30 can be a flexible circuit board, a rigid-flex circuit board or a rigid circuit board.

在一些實施方式中，所述彈性介電層11可延伸至所述第一電路區30。In some embodiments, the elastic dielectric layer 11 can extend to the first circuit region 30 .

所述可伸縮電路板100還可包括第二電路區50，所述第二電路區50電連接所述可伸縮區10的第二端。所述第二電路區50可為柔性電路板、軟硬結合電路板或者剛性電路板。The stretchable circuit board 100 may further include a second circuit area 50 electrically connected to the second end of the stretchable area 10 . The second circuit area 50 can be a flexible circuit board, a rigid-flex circuit board or a rigid circuit board.

在一些實施方式中，所述彈性介電層11可延伸至所述第二電路區50。In some embodiments, the elastic dielectric layer 11 may extend to the second circuit area 50 .

本申請的所述可伸縮電路板100，其可伸縮線路13中對應所述彎折部131設置補強塊15，所述彎折部131被所述補強塊15包覆，在所述可伸縮區10被拉伸時，所述補強塊15的設置能夠降低所述彎折部131中彎折角或者弧角處的應力，從而降低所述可伸縮線路13在所述彎折部131的彎折角或者弧角處斷裂的風險。In the stretchable circuit board 100 of the present application, a reinforcing block 15 is provided in the stretchable line 13 corresponding to the bending portion 131, and the bending portion 131 is covered by the reinforcing block 15. When 10 is stretched, the setting of the reinforcing block 15 can reduce the stress at the bending angle or arc angle in the bending portion 131, thereby reducing the bending angle or the bending angle of the stretchable circuit 13 at the bending portion 131 Risk of breakage at arc corners.

100:可伸縮電路板 X:第一方向 10:可伸縮區 11:彈性介電層 13:可伸縮線路 Y:第二方向 130:可伸縮線路層 Z:第三方向 131:彎折部 133:延伸部 α,θ1,θ2:夾角 15:補強塊 151:凹槽 153:凸起 O-O:中心線 17:加強塊 170:凹部 30:第一電路區 50:第二電路區 100: Retractable circuit board X: first direction 10: Scalable area 11: Elastic dielectric layer 13: Retractable lines Y: the second direction 130: Scalable line layer Z: third direction 131: bending part 133: Extension α, θ1, θ2: included angle 15: Reinforcing block 151: Groove 153: Raised O-O: Centerline 17: Reinforcing block 170: concave part 30: First circuit area 50:Second circuit area

圖1為本申請一實施方式的可伸縮電路板的立體示意圖。FIG. 1 is a three-dimensional schematic diagram of a stretchable circuit board according to an embodiment of the present application.

圖2為本申請一實施方式的可伸縮電路板的剖面示意圖。FIG. 2 is a schematic cross-sectional view of a stretchable circuit board according to an embodiment of the present application.

圖3為本申請一實施方式的可伸縮電路板的示意圖。FIG. 3 is a schematic diagram of a stretchable circuit board according to an embodiment of the present application.

圖4為本申請另一實施方式的可伸縮電路板的剖面示意圖。FIG. 4 is a schematic cross-sectional view of a stretchable circuit board according to another embodiment of the present application.

圖5為本申請另一實施方式的可伸縮電路板的示意圖。FIG. 5 is a schematic diagram of a stretchable circuit board according to another embodiment of the present application.

圖6為本申請又一實施方式的可伸縮電路板的示意圖。FIG. 6 is a schematic diagram of a stretchable circuit board according to another embodiment of the present application.

圖7為本申請一實施方式的可伸縮電路板的局部示意圖。FIG. 7 is a partial schematic diagram of a stretchable circuit board according to an embodiment of the present application.

圖8為本申請再一實施方式的可伸縮電路板的示意圖。FIG. 8 is a schematic diagram of a stretchable circuit board according to yet another embodiment of the present application.

圖9為本申請另一實施方式的可伸縮電路板的局部示意圖。FIG. 9 is a partial schematic diagram of a stretchable circuit board according to another embodiment of the present application.

圖10為本申請又一實施方式的可伸縮電路板的局部示意圖。FIG. 10 is a partial schematic diagram of a stretchable circuit board according to another embodiment of the present application.

圖11為本申請再一實施方式的可伸縮電路板的局部示意圖。FIG. 11 is a partial schematic diagram of a stretchable circuit board according to yet another embodiment of the present application.

圖12為本申請另一實施方式的可伸縮電路板的局部示意圖。FIG. 12 is a partial schematic diagram of a stretchable circuit board according to another embodiment of the present application.

無none

100:可伸縮電路板 100: Retractable circuit board

X:第一方向 X: first direction

10:可伸縮區 10: Scalable area

11:彈性介電層 11: Elastic dielectric layer

13:可伸縮線路 13: Retractable lines

Y:第二方向 Y: the second direction

Z:第三方向 Z: third direction

131:彎折部 131: bending part

133:延伸部 133: Extension

α,θ 1,θ 2:夾角 α, θ 1, θ 2: included angle

15:補強塊 15: Reinforcing block

30:第一電路區 30: First circuit area

50:第二電路區 50:Second circuit area

Claims

一種可伸縮電路板，包括沿第一方向延伸的可伸縮區，所述可伸縮區包括彈性介電層及複數個間隔的且內嵌於所述彈性介電層中的可伸縮線路，其改良在於，每一所述可伸縮線路包括至少一彎折部及連接每一所述彎折部二端的延伸部，所述可伸縮區還包括對應每一所述彎折部設置的補強塊，所述彎折部被所述補強塊包覆。A stretchable circuit board, comprising a stretchable region extending along a first direction, the stretchable region includes an elastic dielectric layer and a plurality of spaced stretchable circuits embedded in the elastic dielectric layer, the improved In that, each of the stretchable lines includes at least one bending portion and an extension portion connecting two ends of each of the bending portions, and the stretchable region further includes a reinforcement block corresponding to each of the bending portions, so The bent portion is covered by the reinforcing block.

如請求項1所述的可伸縮電路板，其中，所述補強塊包括凹槽，所述延伸部與被所述補強塊包覆的所述彎折部連接的端部位於所述凹槽中，所述彈性介電層填充所述凹槽與所述延伸部的端部之間。The stretchable circuit board according to claim 1, wherein the reinforcing block includes a groove, and the end of the extension part connected to the bent part covered by the reinforcing block is located in the groove , the elastic dielectric layer fills between the groove and the end of the extension.

如請求項2所述的可伸縮電路板，其中，所述凹槽的深度大於或等於1mm。The stretchable circuit board according to claim 2, wherein the depth of the groove is greater than or equal to 1mm.

如請求項2所述的可伸縮電路板，其中，所述延伸部自所述凹槽的底壁伸出，所述凹槽的內側壁與對應的所述延伸部在所述第一方向上的間距大於或等於0.2mm。The stretchable circuit board according to claim 2, wherein the extension part protrudes from the bottom wall of the groove, and the inner side wall of the groove and the corresponding extension part are in the first direction The spacing is greater than or equal to 0.2mm.

如請求項2所述的可伸縮電路板，其中，所述補強塊還包括一凸起，所述凸起自所述凹槽的底壁凸伸，且位於連接每一被所述補強塊包覆的所述彎折部二端的延伸部之間。The stretchable circuit board as claimed in item 2, wherein the reinforcing block further includes a protrusion protruding from the bottom wall of the groove, and is located at the connection between each between the extensions at the two ends of the bent portion covered.

如請求項5所述的可伸縮電路板，其中，所述凸起背離所述凹槽底壁的一端與相鄰的所述延伸部在所述第一方向上的最小間距大於或等於0.2mm。The stretchable circuit board according to claim 5, wherein the minimum distance between the end of the protrusion facing away from the bottom wall of the groove and the adjacent extension part in the first direction is greater than or equal to 0.2mm .

如請求項1所述的可伸縮電路板，其中，複數個所述可伸縮線路沿垂直於所述第一方向的第二方向間隔分佈。The stretchable circuit board according to claim 1, wherein the plurality of stretchable lines are distributed at intervals along a second direction perpendicular to the first direction.

如請求項1所述的可伸縮電路板，其中，所述可伸縮電路板在沿所述第一方向拉伸前，每一所述延伸部與所述第一方向之間的最小的夾角α滿足：60°≤α≤90°。The stretchable circuit board according to claim 1, wherein, before the stretchable circuit board is stretched along the first direction, the minimum angle α between each of the extension parts and the first direction Satisfy: 60°≤α≤90°.

如請求項8所述的可伸縮電路板，其中，所述可伸縮電路板在沿所述第一方向拉伸後，所述夾角α滿足：α≥45°。The stretchable circuit board according to claim 8, wherein, after the stretchable circuit board is stretched along the first direction, the included angle α satisfies: α≥45°.

如請求項1所述的可伸縮電路板，其中，所述可伸縮區為可伸縮的柔性單層線路板、雙層線路線路板或者多層線路線路板。The stretchable circuit board according to claim 1, wherein the stretchable area is a stretchable flexible single-layer circuit board, a double-layer circuit board or a multi-layer circuit board.

如請求項1至10任意一項所述的可伸縮電路板，其中，連接於所述彎折部一端的所述延伸部的端部，自對應的所述補強塊先朝靠近連接該彎折部另一端的所述延伸部的方向延伸。The stretchable circuit board according to any one of claims 1 to 10, wherein, the end of the extension part connected to one end of the bending part moves from the corresponding reinforcing block toward the connecting part of the bending part. Extend in the direction of the extension portion at the other end of the portion.

如請求項1所述的可伸縮電路板，其中，所述可伸縮區還包括複數個加強塊，每一所述延伸部穿過一所述加強塊。The stretchable circuit board as claimed in claim 1, wherein the stretchable area further includes a plurality of reinforcement blocks, and each of the extensions passes through one of the reinforcement blocks.

如請求項12所述的可伸縮電路板，其中，每一所述加強塊沿垂直於所述第一方向的第二方向間隔的相對二表面分別設有一凹部，所述延伸部自所述加強塊的二所述凹部穿過；所述彈性介電層填充所述凹部。The stretchable circuit board according to claim 12, wherein, each of the reinforcement blocks is provided with a concave portion on two opposite surfaces spaced apart along the second direction perpendicular to the first direction, and the extension portion extends from the reinforcement block Two said recesses of the block pass through; said elastic dielectric layer fills said recesses.

如請求項1所述的可伸縮電路板，其中，所述可伸縮區在所述第一方向包括第一端及第二端，所述可伸縮電路板還包括電連接所述第一端的第一電路區及電連接所述第二端的第二電路區，所述第一電路區及所述第二電路區分別選自柔性電路板、軟硬結合電路板或者剛性電路板中的一種。The stretchable circuit board according to claim 1, wherein the stretchable region includes a first end and a second end in the first direction, and the stretchable circuit board further includes a The first circuit area and the second circuit area electrically connected to the second end, the first circuit area and the second circuit area are respectively selected from a flexible circuit board, a rigid-flex circuit board or a rigid circuit board.