WO2009121200A1 - 平衡多层基板应力的方法及多层基板 - Google Patents

平衡多层基板应力的方法及多层基板 Download PDF

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Publication number
WO2009121200A1
WO2009121200A1 PCT/CN2008/000630 CN2008000630W WO2009121200A1 WO 2009121200 A1 WO2009121200 A1 WO 2009121200A1 CN 2008000630 W CN2008000630 W CN 2008000630W WO 2009121200 A1 WO2009121200 A1 WO 2009121200A1
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WIPO (PCT)
Prior art keywords
metal layer
layer
area
multilayer substrate
redundant
Prior art date
Application number
PCT/CN2008/000630
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English (en)
French (fr)
Inventor
杨之光
Original Assignee
巨擘科技股份有限公司
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Filing date
Publication date
Application filed by 巨擘科技股份有限公司 filed Critical 巨擘科技股份有限公司
Priority to KR1020107018159A priority Critical patent/KR101229956B1/ko
Priority to EP08733855.4A priority patent/EP2270851B1/en
Priority to PCT/CN2008/000630 priority patent/WO2009121200A1/zh
Priority to JP2011501082A priority patent/JP5404763B2/ja
Publication of WO2009121200A1 publication Critical patent/WO2009121200A1/zh

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0271Arrangements for reducing stress or warp in rigid printed circuit boards, e.g. caused by loads, vibrations or differences in thermal expansion
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0216Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0224Patterned shielding planes, ground planes or power planes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0277Bendability or stretchability details
    • H05K1/028Bending or folding regions of flexible printed circuits
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03Conductive materials
    • H05K2201/0332Structure of the conductor
    • H05K2201/0388Other aspects of conductors
    • H05K2201/0394Conductor crossing over a hole in the substrate or a gap between two separate substrate parts
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09009Substrate related
    • H05K2201/09136Means for correcting warpage
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09209Shape and layout details of conductors
    • H05K2201/09654Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/0969Apertured conductors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09209Shape and layout details of conductors
    • H05K2201/09654Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/09781Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/46Manufacturing multilayer circuits
    • H05K3/4611Manufacturing multilayer circuits by laminating two or more circuit boards
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/46Manufacturing multilayer circuits
    • H05K3/4644Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits

Definitions

  • the present invention relates to a method and a multilayer for balancing a multilayer reaction force, and more particularly to a method for balancing a soft multilayer substrate due to a large difference in area and position of different metal layers or dielectric layers. Stress, thereby avoiding the method of multi-layer stress balancing multi-layer stress and multi-layer.
  • a multi-layer substrate has a plurality of dielectric layers formed by coating, and a corresponding metal layer is respectively formed by various lithography techniques between the dielectric layers, and the dielectric layer and the metal layer overlap to form a plurality of layers.
  • the substrate is used to realize a multilayer substrate having the advantages of thin thickness and material simplification, and is particularly suitable for fabricating a flexible multilayer substrate. Since the dielectric layer formed by the coating method is a wet film, there is a process step of drying these dielectric layers to harden them. Due to the circuit design, each metal layer has a different area and the position in the multilayer substrate is also different. In contrast, the corresponding dielectric layers have different areas.
  • the drying and hardening process steps are performed, because the dielectric layers shrink in different proportions (
  • the dielectric layer has the same material and the same shrinkage rate, but the ratio of shrinkage to each other is different due to its shape, area, and volume.)
  • the stress imbalance occurs between the dielectric layers and the metal layers of the multilayer substrate, resulting in more Layer ⁇ 1 ⁇ 2 raw warp.
  • the dielectric layer is not formed by coating, the area, thickness and even the structural material of each layer are not the same, which causes stress imbalance, resulting in warpage of the multilayer.
  • Multi-layer warpage with severe warpage will affect the accuracy of subsequent system assembly, and even assembly due to severe warpage.
  • the flexible characteristics are the main purpose of the development of the soft substrate industry. Therefore, after the flexible multi-layer substrate is fabricated into a commodity, some of the specific regions or even the whole may be often flexed at will, such as the above-mentioned stress and the occurrence of warpage are not solved, and the confirmation is confirmed. It will be more likely to cause a short product life and a bottleneck that cannot be effectively commercialized.
  • the main object of the present invention is to provide a method for balancing multi-layer stress and a multilayer 1 which can balance the stress caused by the difference in area and position of different metal layers or dielectric layers to avoid warpage. song.
  • the present invention provides a method for balancing the stress of a multilayer substrate for a multilayer substrate having at least a first metal layer and a second metal layer, the first area of the first metal layer being greater than The second area of the second metal layer, the one location layer where the second metal layer is disposed is provided with at least one redundant metal layer, and the area of the redundant metal layer is added to the second area to be equivalent to the first area.
  • the redundant metal layer and the second metal layer are parallel to the intermediate faces of the first metal layer and the second metal layer, and correspond to the first metal layer.
  • the method of the present invention can still be utilized when the first metal layer and the second metal layer further comprise at least a third metal layer.
  • the second surface dielectric layer of the other surface of the plurality of layers may be provided with a redundancy corresponding to the position of the opening. Open the hole.
  • the present invention also provides a multilayer substrate comprising a first metal layer and a second metal layer, the first area of the first metal layer being greater than the second area of the second metal layer, the second metal layer being The one location layer further includes at least one second redundant metal layer, and the area of the at least one second redundant metal layer plus the second area is equivalent to the first area.
  • the present invention can balance the stress generated by the difference in the area and position of different metal layers or dielectric layers during the manufacturing process or in the use of the multilayer substrate, that is, to make more Layer 1
  • the area and position of different metal layers or dielectric layers are relatively homogenized to avoid warpage.
  • FIG. 1 is a schematic view showing a method for balancing multi-layer stress and a first embodiment of a multilayer 1 according to the present invention
  • FIG. 2 is a schematic view showing a method of balancing multi-layer stress and a second embodiment of the multilayer of the present invention
  • FIG. 3 is a schematic view showing a method of balancing multi-layer stress and a third embodiment of the multilayer of the present invention
  • FIG. 4 is a schematic view showing a method of balancing a multi-layer reaction force of the present invention and a fourth embodiment of the multilayer;
  • Figure 5 is a schematic view showing a method of balancing multilayer stress and a fifth embodiment of the multilayer of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to Figure 1, a schematic diagram of a first embodiment of a method of multi-layering and balancing multilayer stress in accordance with the present invention is illustrated. The left side of Figure 1 is a three-dimensional exploded view of the multilayer, and the right side is the corresponding sectional view. 1 shows a first metal layer 102, a corresponding first dielectric layer 122, and second metal layers 1 12 and 14 and a corresponding second dielectric layer 222.
  • the aforementioned first dielectric layer 122 and second dielectric layer 222 are formed by coating.
  • stress imbalance occurs between the dielectric layers and the metal layers, resulting in warpage of the multilayer substrate.
  • the metal layer area, thickness, and even the structural material of each layer are not the same, which causes stress imbalance, which causes warpage of the multilayer substrate.
  • the concept of relatively homogenizing the area and position of different metal layers or dielectric layers by the present invention can balance the stress of the multilayer substrate and avoid warpage.
  • the first area of the first metal layer 102 occupies most of the multilayer and is large.
  • the second area of the second metal layer 112, 114 In the position layer where the second metal layers 112, 114 are located, the second redundant metal layers 202, 204, 206 are disposed on the premise of not affecting the design of the circuit, so that the area of the second redundant metal layer is added to the second area. After the same as the first area.
  • the second redundant metal layers 202, 204, and 206 and the second metal layers 112 and 114 are parallel to the intermediate faces of the first metal layer 102 and the second metal layers 112 and 114, and correspond to the first metal layer 102. It is possible to balance the stress of the multilayer and avoid warping.
  • the multilayer substrate further includes a fourth metal layer 102a, a corresponding fourth dielectric layer 122a, and fifth metal layers 112a and 114a and a corresponding fifth dielectric layer 222a.
  • the fourth metal layer 102a is located outside the first metal layer 102
  • the fifth metal layers 112a and 114a are located outside the second metal layer 112, 114.
  • the fifth redundant metal layers 202a, 204a 206a are disposed so as not to affect the design of the circuit, so that the area of the fifth redundant metal layer Adding the fifth area is equivalent to the fourth area.
  • the fifth redundant metal layers 202a, 204a, 206a and the fifth metal layers 112a, 114a correspond to the intermediate portions of the fourth metal layer 102a and the fifth metal layers 112a, 114a, corresponding to the fourth metal layer 102a.
  • the present invention can also be applied to balance the multi-layer anti- stress.
  • FIG. 2 a schematic diagram of a second embodiment of the method of the present invention and a method of balancing multilayer stress is illustrated.
  • the left side of Figure 2 is a three-dimensional exploded view of the multilayer, and the right side is the corresponding cross-sectional view.
  • the first metal layer 102, the corresponding first dielectric layer 122 and the second metal layers 112 and 114, and the corresponding second dielectric layer 222 of the multilayer substrate are shown in FIG.
  • the pattern of the first metal layer 102 is complicated but the first area occupied by the first metal layer 102 is still For the second area larger than the second metal layers 112, 114, therefore, the position layer of the second metal layer 112 and 114 of the present invention is provided on the premise of not affecting the design of the circuit, and the second area is small and the distribution is trivial.
  • the redundant metal layers 202, 204, 206 are still intended to have the area of the second redundant metal layer plus the second area corresponding to the first area.
  • the second redundant metal layers 202, 204, 206 and the second metal layers 112, 114 are parallel to the intermediate faces of the first metal layer 102 and the second metal layers 112, 114, corresponding to the first metal layer 102, It is possible to balance the stress of the multilayer substrate to avoid warpage.
  • Schematic diagram of the example Similarly, the left side of FIG. 3 is a perspective exploded view of the multilayer substrate, and the right side is a corresponding cross-sectional view.
  • the multilayer 1 has a first metal layer 102, a corresponding first dielectric layer 122 and second metal layers 112 and 114, and a corresponding second dielectric layer 222.
  • a third metal layer 302 and a corresponding third dielectric layer 322 are further included between the first metal layer 102 and the second metal layer 112.
  • the area occupied by the third metal layer 302 is smaller than the second area occupied by the second metal layer 112, and is of course smaller than the first area occupied by the first metal layer 102.
  • the third metal layer 302 and the third dielectric layer 322 are sandwiched In the meantime, the difference between the first metal layer 102 and the second metal layer 112 can be ignored.
  • the area and position difference of the first metal layer 102 and the second metal layer 112 are directly considered. Just fine. That is, as described above, in terms of the overall consideration of the multilayer substrate, the inside thereof has a symmetrical structure.
  • the present invention can provide a second area of the second redundant metal layer 202, 206 and a second area of a larger area on the premise that the second metal layers 112 and 114 are located without affecting the design of the circuit.
  • the remaining metal layer 204 is still oriented to add the second area of the second redundant metal layer to the first area.
  • the second redundant metal layers 202, 204, and 206 and the second metal layers 112 and 114 are parallel to the intermediate faces of the first metal layer 102 and the second metal layers 112 and 114, and correspond to the first metal layer 102. That is, the stress of the multilayer substrate can be balanced to avoid warpage.
  • FIG. 4 a schematic diagram of a fourth embodiment of the multi-layer substrate of the present invention and a method for balancing the stress of the multi-layer substrate is illustrated.
  • the left side of FIG. 4 is a perspective exploded view of the multilayer substrate, and the right side corresponds to Sectional view.
  • the multilayer 1 has a first metal layer 102, a corresponding first dielectric layer 122, and second metal layers 1 12 and 14 and a corresponding second dielectric layer 222.
  • the first area occupied by the first metal layer 102 is relatively larger than the second area of the second metal layer 112.
  • the first redundant space 402 is disposed in the first metal layer 102 in this embodiment. 404, 406, 408, and 410, and subtracting the area of the first redundant space from the first area to be equivalent to the second area, and the metal layer 102 other than the first redundant spaces 402, 404, 406, 408, and 410
  • the stress of the plurality of layers can be balanced to prevent warpage from occurring.
  • the first metal layer 102 and the second metal layer 112 have a fourth dielectric layer and a fifth dielectric layer on the outer side or the inner side.
  • the fourth area of the fourth metal layer is greater than the fifth area of the fifth metal layer.
  • FIG. 5 a schematic diagram of a fifth embodiment of the method of multi-layered and balanced multilayer reaction of the present invention is illustrated.
  • a plurality of layers of the pad layer 500 are shown, and an opening 502 is formed in the first surface dielectric layer 522.
  • the multilayer layer further includes a second surface dielectric layer 524 on the other surface of the plurality of layers.
  • a redundant opening 602 is disposed at the position of the second surface dielectric layer 524 corresponding to the opening 502, so that the multilayer can be balanced. The stress that prevents warpage from occurring.
  • the concept of relatively homogenizing the area and position of different metal layers or dielectric layers can still be utilized by the present invention, and the redundant opening is provided at the position corresponding to the opening. Holes, which balance the stress of the multilayer substrate to avoid warpage.
  • the first to fifth embodiments when manufacturing a multi-layer substrate, can be used alone or in combination with different circuit designs to relatively homogenize different metal layers or dielectric layers of the multilayer substrate. That is, it can balance the stress caused by the difference in material of different layers, so as to avoid warpage.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)
  • Structure Of Printed Boards (AREA)

Description

平衡多层 ί 应力的方法及多层
技术领域 本发明是关于一种平衡多层 反应力的方法及多层 且特别是有关于 一种能平衡软性多层基板因不同金属层或介电层所占面积及位置差异大而产 生的应力, 从而避免多层 曲的平衡多层 应力的方法及多层^ 反。 背景技术 目前多层基板有以涂布的方式形成若干个介电层, 而介电层间以各式微影 技术分别形成对应的金属层, 前述介电层及前述金属层交叠形成多层基板, 用 以实现具有厚度薄且材料简化等优点的多层基板, 且此方式特别适用于制作软 性多层基板。 由于以涂布方式所形成的介电层为湿膜, 因此会有一干燥这些介 电层使其硬化的工艺步骤。 因电路设计的缘故, 每一金属层具有不同的面积, 且在多层基板中的位置也不尽相同。 相对地, 对应的各介电层的面积也不同, 当多层介电层及多层金属层交叠形成后, 再进行前述干燥及硬化的工艺步骤 时, 由于各介电层收缩比例不同(介电层材质相同, 收缩率相同, 但因其形状、 所占面积、 体积不同, 相对彼此收缩的比例就不同), 多层基板各介电层及金 属层间将产生应力不平衡, 导致多层^ ½生翘曲。 另一方面, 即使介电层不 是以涂布方式形成, 各层金属层面积、 厚度甚至结构材料并不相同, 也会造成 应力不平衡, 导致多层^ 发生翘曲。
翘曲严重的多层 ^将会影响后续系统组装上的精度, 甚至由于翘曲严重 而造成无法组装。 另外, 就软性多层 的设计应用而言, 可折曲的特性是现 在软性基板产业发展的主要目的。 因此, 软性多层基板制作成商品后, 其部分 特定区域甚至整体可能经常被随意折曲,如杲上述应力、发生翘曲问题未解决, 确认本 会更容易造成产品寿命短, 无法有效商品化的瓶颈。 发明内容 本发明的主要目的在于提供一种平衡多层 应力的方法及多层 1 , 能 使多层基板平衡因不同金属层或介电层所占面积及位置差异大而产生的应力 从而避免翘曲。
为达成本发明的前述目的, 本发明提供一种平衡多层基板应力的方法, 用 于至少具有一第一金属层及一第二金属层的多层基板, 第一金属层的第一面积 大于第二金属层的第二面积, 第二金属层所处的一位置层设置至少一冗余金属 层, 使冗余金属层的面积加上第二面积后相当于第一面积。 冗余金属层及第二 金属层以平行第一金属层及第二金属层的中间面为准, 对应于第一金属层。 另 外, 当第一金属层与第二金属层间进一步包含至少一第三金属层时, 仍能利用 本发明的方法。 并且, 当位于本发明多层基 ^^面的第一表面介电层具有至少 一开孔时, 可在多层 另一表面的第二表面介电层, 对应开孔的位置设置一 冗余开孔。
本发明还提供一种多层基板, 包含一第一金属层及一第二金属层, 该第一 金属层的第一面积大于该第二金属层的第二面积, 该第二金属层所处的一位置 层还包括至少一第二冗余金属层, 该至少一第二冗余金属层的面积加上该第二 面积后与该第一面积相当。
相较于现有技术, 本发明利用上述手段, 可以平衡多层基板在制造过程中 或使用中, 因不同金属层或介电层所占面积及位置差异大而产生的应力, 也就 是使多层 1 不同金属层或介电层所占面积及位置相对地均质化,从而避免翘 曲。
为让本发明的上述和其它目的、 特征、 和优点能更明显易懂, 配合所附图 式, 作详细说明如下: 附图说明 图 1绘示本发明平衡多层 应力的方法及多层 1 的第一实施例的示意 图;
图 2绘示本发明平衡多层 应力的方法及多层 的第二实施例的示意 图;
图 3绘示本发明平衡多层 应力的方法及多层 的第三实施例的示意 图;
图 4绘示本发明平衡多层 反应力的方法及多层 的第四实施例的示意 图; 以及
图 5绘示本发明平衡多层 应力的方法及多层 的第五实施例的示意 图。 具体实施方式 请参考图 1, 绘示本发明多层 反以及平衡多层 应力的方法的第一实 施例的示意图。 图 1左侧为多层 的立体分解示意图, 右侧则为对应的剖面 图。 图 1显示多层基板所具有的第一金属层 102、 对应的第一介电层 122以及 第二金属层 1 12与 1 14、 对应的第二介电层 222。
前述的第一介电层 122及第二介电层 222以涂布的方式形成。 当进行干燥 及硬化的工艺步骤时, 由于介电层相对收缩比例不同, 各介电层及金属层间将 产生应力不平衡, 导致多层基板发生翘曲。 另外, 即使介电层不是以涂布方式 形成, 各层金属层面积、 厚度甚至结构材料并不相同, 也会造成应力不平衡, 导致多层基板发生翘曲。 利用本发明使不同金属层或介电层所占面积及位置相 对均质化的概念, 能平衡多层基板的应力, 避免翘曲发生。
如图 1所示, 第一金属层 102的第一面积, 几乎占多层 的大部分且大 于第二金属层 112、 114的第二面积。 在第二金属层 112、 114所处的位置层, 以不影响电路的设计为前提, 设置第二冗余金属层 202、 204、 206, 使第二冗 余金属层的面积加上第二面积后与第一面积相当。 并且, 第二冗余金属层 202、 204、 206及第二金属层 112、 114以平行第一金属层 102及第二金属层 112、 114的中间面为准, 对应于第一金属层 102, 就能平衡多层 的应力, 避免 翘曲发生。
同样地, 如图 1所示, 多层基板还包括有第四金属层 102a、 对应的第四介 电层 122a以及第五金属层 112a与 114a、对应的第五介电层 222a。 第四金属层 102a位处第一金属层 102的外侧, 第五金属层 112a与 114a位处第二金属层 112、 114的外侧。 也如前所述, 在第五金属层 112a、 114a所处的位置层, 以 不影响电路的设计为前提, 设置第五冗余金属层 202a、 204a 206a, 使第五冗 余金属层的面积加上第五面积后与第四面积相当。并且,第五冗余金属层 202a、 204a、 206a及第五金属层 112a、 114a以平行第四金属层 102a及第五金属层 112a, 114a的中间面为准, 对应于第四金属层 102a。
也就是说, 本发明就多层基板整体考量而言, 无论位置相对应的两两金属 层是否相邻, 如果使多层基板内部位置如前述第一金属层 102 与第二金属层 112、 114、 第四金属层 102a与第五金属层 112a、 114a般相对应的金属层及介 电层具有对称性的结构, 就能平衡多层 的应力, 避免翘曲发生。 另外, 当 第四金属层 102a位处第一金属层 102的内侧, 第五金属层 112a与 114a位处 第二金属层 112、 114的内侧的情形, 也可应用本发明去平衡多层 反的应力。
请参考图 2, 绘示本发明多层 以及平衡多层 应力的方法的第二实 施例的示意图。 同样地, 图 2左侧为多层 的立体分解示意图, 右侧则为对 应的剖面图。 图 2中显示多层基板所具有的第一金属层 102、 对应的第一介电 层 122以及第二金属层 112与 114、 对应的第二介电层 222。
在此实施例中, 第一金属层 102的图形繁复但其所占有的第一面积, 仍相 对大于第二金属层 112、 114的第二面积, 因此, 本发明在第二金属层 112与 114所处的位置层, 以不影响电路的设计为前提, 设置面积小而分布瑣碎的第 二冗余金属层 202、 204、 206, 目的仍是使第二冗余金属层的面积加上第二面 积后与第一面积相当。并且,第二冗余金属层 202、 204、 206及第二金属层 112、 114以平行第一金属层 102及第二金属层 112、 114的中间面为准,对应于第一 金属层 102, 就能平衡多层基板的应力, 避免翘曲发生。 施例的示意图。 同样地, 图 3左侧为多层基板的立体分解示意图, 右侧为对应 的剖面图。图 3中显示该多层 1反具有第一金属层 102、对应的第一介电层 122 以及第二金属层 112与 114、 对应的第二介电层 222。
并且,在第一金属层 102与第二金属层 112之间还包含第三金属层 302及 对应的第三介电层 322。 第三金属层 302所占面积小于第二金属层 112所占的 第二面积, 当然也小于第一金属层 102所占的第一面积, 当第三金属层 302与 第三介电层 322夹在其中时, 可忽略其与第一金属层 102及第二金属层 112的 差异, 无论第三金属层 302的面积大小, 直接考虑第一金属层 102及第二金属 层 112的面积、 位置差异即可。 也就是如前述, 就多层基板整体考量而言, 使 其内部具有对称性的结构。
这样, 本发明就可以在第二金属层 112与 114所处的位置层, 以不影响电 路的设计为前提, 设置小面积的第二冗余金属层 202、 206与较大面积的第二 冗余金属层 204, 目的仍是使第二冗余金属层的面积加上第二面积后与第一面 积相当。 并且, 第二冗余金属层 202、 204、 206及第二金属层 112、 114以平 行第一金属层 102及第二金属层 112、 114的中间面为准, 对应于第一金属层 102, 即能平衡多层基板的应力, 避免翘曲发生。
请参考图 4, 绘示本发明多层基板以及平衡多层基板应力的方法的第四实 施例的示意图。 同样地, 图 4左侧为多层基板的立体分解示意图, 右侧为对应 的剖面图。图 4中显示该多层 1 具有第一金属层 102、对应的第一介电层 122 以及第二金属层 1 12与 1 14、 对应的第二介电层 222。
第一金属层 102所占有的第一面积,相对大于第二金属层 1 12的第二面积, 与前述实施例不同的是,本实施例在第一金属层 102中设置第一冗余空间 402、 404、 406、 408以及 410, 而使第一面积减去第一冗余空间的面积后与第二面 积相当, 且第一冗余空间 402、 404、 406、 408以及 410以外的金属层 102以 平行第一金属层 102及第二金属层 1 12的中间面为准,与第二金属层 1 12对应, 即能平衡多层 的应力, 避免翘曲发生。 当然, 在此实施例中, 还能如前第 一实施例所述, 第一金属层 102与第二金属层 1 12的外侧或内侧还具有一第四 介电层及一第五介电层, 第四金属层的第四面积大于第五金属层的第五面积。 以在第四金属层中设置第四冗余空间的方式, 使多层 反内部具有对称性的结 构, 无论位置相对应的金属层是否相邻, 仍能平衡多层基板的应力, 避免翘曲 发生。
请参考图 5, 绘示本发明多层 反以及平衡多层 反应力的方法的第五实 施例的示意图。 图 5中显示一多层 反在焊垫层 500的位置, 对其第一表面介 电层 522设置开孔 502。 该多层^ ¼还包括位于多层 另一表面的第二表面 介电层 524。 利用本发明使不同金属层或介电层所占面积及位置相对均质化的 概念, 在第二表面介电层 524对应开孔 502的位置设置一冗余开孔 602 , 就能 平衡多层 的应力, 避免翘曲发生。 同样地, 当前述开孔位于多层 反内部 时, 仍可利用本发明使不同金属层或介电层所占面积及位置相对均质化的概 念, 在对应开孔的位置, 设置冗余开孔, 而能平衡多层基板的应力, 避免翘曲 发生。
综上所述, 在制作一多层基板时, 能配合不同电路设计, 单独或组合运用 前述第一实施例至第五实施例, 使多层基板不同金属层或介电层相对地均质 化,即能平衡多层 因不同层的材质差异而产生的应力,从而避免翘曲发生。

Claims

权 利 要 求
1 . 一种平衡一多层 应力的方法,该多层 具有一第一金属层及一 第二金属层, 该第一金属层的第一面积大于该第二金属层的第二面积, 其特 征在于: 该第二金属层所处的一位置层设置至少一冗余金属层, 使该至少一 冗余金属层的面积加上该第二面积后与该第一面积相当。
2. 如权利要求 1所述的方法, 其特征在于: 该至少一冗余金属层及该第 二金属层以平行该第一金属层及该第二金属层的中间面为准, 对应于该第一 金属层。
3. 如权利要求 1所述的方法, 其特征在于: 该第一金属层与该第二金属 层间还包含一第三金属层。
4. 如权利要求 1所述的方法, 其特征在于: 该多层 进一步包含一位 于该多层基板表面的第一表面介电层, 该第一表面介电层具有至少一开孔。
5. 如权利要求 4所述的方法, 其特征在于: 该多层基板进一步包含一位 于该多层 另一表面的第二表面介电层, 该第二表面介电层在对应该至少 一开孔的位置具有至少一冗余开孔。
6. 一种平衡一多层 反应力的方法,该多层 具有一第一金属层及一 第二金属层, 该第一金属层的第一面积大于该第二金属层的第二面积, 其特 征在于: 在该第一金属层中设置至少一冗余空间, 使该第一面积减去该至少 一冗余空间的面积后与该第二面积相当。
7. 如权利要求 6所述的方法, 其特征在于: 该第二金属层以平行该第一 金属层及该第二金属层的中间面为准, 对应于该至少一冗余空间以外的该第
8. 如权利要求 6所述的方法, 其特征在于: 该第一金属层与该第二金属 层间还包含一第三金属层。
9. 如权利要求 6所述的方法, 其特征在于: 该多层基板进一步包含一位 于该多层基板表面的第一表面介电层, 该第一表面介电层具有至少一开孔。
10. 如权利要求 9所述的方法, 其特征在于: 该多层基板进一步包含一 位于该多层基板另一表面的第二表面介电层, 在第二表面介电层对应该至少 一开孔的位置具有至少一冗余开孔。
1 1. 一种平衡一多层基板应力的方法, 其中该多层基板具有一位于该多 层基板一表面的第一表面介电层及一位于该多层基板另一表面的第二表面介 电层, 该第一表面介电层具有至少一开孔, 其特征在于: 该第二表面介电层 对应于所述第一表面介电层的开孔的位置设置至少一冗余开孔。
12. 一种平衡一多层基板应力的方法, 其中该多层基板具有一位于该多 层基板中的第一介电层及一位于该多层基板中的第二介电层, 该第一介电层 具有至少一开孔, 其特征在于: 该第二介电层对应于所述第一介电层的开孔 的位置设置至少一冗余开孔。
13. 一种多层基板, 包含一第一金属层及一第二金属层, 该第一金属层 的第一面积大于该第二金属层的第二面积, 其特征在于: 该第二金属层所处 的一位置层还包括至少一第二冗余金属层, 该至少一第二冗余金属层的面积 加上该第二面积后与该第一面积相当。
14. 如权利要求 13所述的多层基板, 其特征在于: 该第二冗余金属层及 该第二金属层平行于该第一金属层及该第二金属层的中间面, 对应于该第一 金属层。
15. 如权利要求 13所述的多层基板, 其特征在于: 该第一金属层与该第 二金属层间还包含一第三金属层。
16. 如权利要求 13所述的多层基板, 其特征在于: 该多层基板进一步包 含一第四金属层及一第五金属层, 分别位于该第一金属层与该第二金属层相 对的外侧, 该第四金属层的第四面积大于该第五金属层的第五面积, 其特征 在于: 该第五金属层所处的一位置层包括至少一第五冗余金属层, 该至少一 第五冗余金属层的面积加上该第五面积后与该第四面积相当。
17. 如权利要求 16所述的多层基板, 其特征在于: 该至少一第五冗余金 属层及该第五金属层平行于该第四金属层及该第五金属层的中间面, 对应于 该第四金属层。
18. 如权利要求 13所述的多层 其特征在于: 该多层 进一步包 含一位于该多层基板表面的第一表面介电层, 该第一表面介电层具有至少一 开孔。
19. 如权利要求 18所述的多层基板, 其特征在于: 该多层基板进一步包 含一位于该多层基板另一表面的第二表面介电层, 在该第二表面介电层对应 该至少一开孔的位置具有至少一冗余开孔。
20. 一种多层基板, 包含一第一金属层及一第二金属层, 该第一金属层 的第一 '面积大于该第二金属层的第二面积, 其特征在于: 该第一金属层中包 括至少一第一冗余空间, 该第一面积减去该至少一第一冗余空间的面积后与 该第二面积相当。
21. 如权利要求 20所述的多层基板, 其特征在于: 该第二金属层平行于 该第一金属层及该第二金属层的中间面, 对应于该至少一第一冗余空间以外 的该第一金属层。
22. 如权利要求 20所述的多层基板, 其特征在于: 该第一金属层与该第 二金属层间还包含一第三金属层。
23. 如权利要求 20所述的多层基板, 其特征在于: 该多层基板还进一步 包含一第四金属层及一第五金属层, 分别位于该第一金属层与该第二金属层 相对的外侧, 该第四金属层的第四面积大于该第五金属层的第五面积, 其特 征在于: 该第四金属层中包括至少一第四冗余空间, 该第四面积减去该至少 一第四冗余空间的面积后与该第五面积相当。
24. 如权利 -要求 23所述的多层 反, 其特征在于: 该第五金属层平行于 该第四金属层及该第五金属层的中间面, 对应于该至少一第四冗余空间以外 的该第四金属层。
25. 如权利要求 20所述的多层 1 , 其特征在于: 该多层 反进一步包 含一位于该多层基板表面的第一表面介电层, 该第一表面介电层具有至少一 开孔。
26. 如权利要求 25所述的多层 反, 其特征在于: 该多层 进一步包 含一位于该多层 反另一表面的第二表面介电层, 在该第二表面介电层对应 该至少一开孔的位置具有至少一冗余开孔。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113518503A (zh) * 2021-03-31 2021-10-19 深圳市景旺电子股份有限公司 多层印刷线路板及其制作方法
CN113518503B (zh) * 2021-03-31 2022-08-09 深圳市景旺电子股份有限公司 多层印刷线路板及其制作方法

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EP2270851A1 (en) 2011-01-05
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KR101229956B1 (ko) 2013-02-06
JP5404763B2 (ja) 2014-02-05
EP2270851A4 (en) 2011-06-29

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