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CN-116168917-B - Inductance device

CN116168917BCN 116168917 BCN116168917 BCN 116168917BCN-116168917-B

Abstract

The invention provides an inductance device, which comprises a first winding, a second winding, a first connecting structure and a second connecting structure. The first winding comprises a first coil and a second coil. The second winding includes a third coil and a fourth coil, the third coil overlaps the first coil, and the fourth coil overlaps the second coil. The first connection structure comprises a first staggered structure and a second staggered structure. The first interlacing structure has a first interlacing point and is used for coupling the first coil and the second coil. The second interlacing structure has a second interlacing point and is configured to couple the third coil and the fourth coil, wherein the first interlacing point and the second interlacing point do not overlap. The second connection structure is used for coupling the second coil and the third coil.

Inventors

  • LUO ZHENGWEI

Assignees

  • 瑞昱半导体股份有限公司

Dates

Publication Date
20260508
Application Date
20211124

Claims (8)

  1. 1. An inductive device, comprising: A first winding located on a first metal layer, wherein the first winding comprises a first coil and a second coil; A second winding located on a second metal layer, wherein the second winding comprises a third coil and a fourth coil, the third coil overlaps the first coil in a direction perpendicular to the first coil, and the fourth coil overlaps the second coil in a direction perpendicular to the second coil; a first connection structure comprising: A first interlacing structure having a first interlacing point for coupling the first coil and the second coil, and A second interlacing structure having a second interlacing point for coupling the third coil and the fourth coil, wherein the first interlacing point and the second interlacing point do not overlap, and A second connection structure for coupling the second coil and the third coil; the first coil comprises a first half coil and a second half coil, and the third coil comprises a fifth half coil and a sixth half coil; the first half coil and the fifth half coil are used for transmitting a first polarity signal, and the first polarity signal is a positive polarity signal or a negative polarity signal; The second half coil and the sixth half coil are used for transmitting a second polarity signal different from the first polarity signal.
  2. 2. The inductive device of claim 1, wherein said first interleaved structure comprises a first connector at said first metal layer, and wherein said first connector is configured to couple said first coil and said second coil.
  3. 3. The inductive device of claim 2, wherein said first interleaved structure further comprises a second connection member located on said second metal layer, and said second connection member is configured to couple said first coil and said second coil; The first connecting pieces and the second connecting pieces are arranged in a staggered mode to form the first staggered points.
  4. 4. The inductive device of claim 3, wherein said second interleaved structure comprises a third connection at said first metal layer, and wherein said third connection is used to couple said third coil and said fourth coil; the third connecting pieces and the second connecting pieces are arranged in a staggered mode, and the third connecting pieces and the first connecting pieces are not overlapped.
  5. 5. The inductive device of claim 4, wherein said second interleaved structure further comprises a fourth connection located in said second metal layer, and said fourth connection is configured to couple said third coil and said fourth coil; Wherein the fourth connecting piece and the third connecting piece are staggered to form the second staggered point; The fourth connecting pieces and the first connecting pieces are arranged in a staggered mode, and the fourth connecting pieces and the second connecting pieces are not overlapped.
  6. 6. The inductive device of claim 1, wherein said first winding further comprises a plurality of coils, and said inductive device further comprises: An input/output end, which is used for being coupled with the coil positioned at the outermost ring in the first winding, wherein the input/output end and the second connection structure are positioned at a first side of the inductance device; The first connecting structure is located on a second side of the inductance device, and the first side is different from the second side.
  7. 7. The inductive device of claim 6, wherein said second coil comprises a third half coil and a fourth half coil, said first half coil and said third half coil being located on a third side of said inductive device, said second half coil and said fourth half coil being located on a fourth side of said inductive device, and said third side being different from said fourth side.
  8. 8. The inductive device of claim 7, wherein said fourth coil comprises a seventh half coil and an eighth half coil, said fifth half coil and said seventh half coil being located on said third side of said inductive device and said sixth half coil and said eighth half coil being located on said fourth side of said inductive device.

Description

Inductance device Technical Field The present disclosure relates to electronic devices, and particularly to an inductance device. Background The existing inductors of various types have advantages and disadvantages. Taking a symmetrical differential inductor as an example, the parasitic capacitance is larger, resulting in a lower self-resonant frequency (self-resonance frequency) and a lower quality factor (quality factor). Therefore, the application range of the inductor is limited. Disclosure of Invention The present disclosure relates to an inductive device. The inductance device comprises a first winding, a second winding, a first connecting structure and a second connecting structure. The first winding is located on a first metal layer, wherein the first winding comprises a first coil and a second coil. The second winding is positioned on a second metal layer, wherein the second winding comprises a third coil and a fourth coil, the third coil is overlapped with the first coil in the direction perpendicular to the first coil, and the fourth coil is overlapped with the second coil in the direction perpendicular to the second coil. The first connection structure comprises a first staggered structure and a second staggered structure. The first interlacing structure has a first interlacing point and is used for coupling the first coil and the second coil. The second interlacing structure has a second interlacing point and is configured to couple the third coil and the fourth coil, wherein the first interlacing point and the second interlacing point do not overlap. The second connection structure is used for coupling the second coil and the third coil. In summary, the inductance device of the present invention has the advantage of reducing the equivalent parasitic capacitance through the stacked structure. In addition, the structure of the invention can improve the self-resonance frequency and the quality factor of the inductance device. Drawings Fig. 1 is a schematic diagram of an inductive device according to some embodiments of the invention; Fig. 2A is a schematic diagram illustrating a portion of the structure of the inductive device shown in fig. 1 according to some embodiments of the invention; fig. 2B is a schematic diagram illustrating a portion of the structure of the inductive device shown in fig. 1, according to some embodiments of the invention; Fig. 3 is a schematic cross-sectional view of an inductive device along the virtual line A-A in fig. 1, according to some embodiments of the invention; FIG. 4 is a schematic view of a portion of a first connection structure according to some embodiments of the present invention; FIG. 5 is a schematic view of a portion of a second connection structure according to some embodiments of the present invention; fig. 6 is a schematic diagram of experimental data of an inductive device according to some embodiments of the invention. Reference numerals illustrate: 100:inductance device 101,102,103,104,105,106,107,108 Connector 201,202,203,204,205,206,207 connector C1 is a first winding C2 is a second winding FC 1-FC 4, SC 1-SC 4 coils DP 1-DP 8, UP 1-UP 8 half-coils CN1 first connection structure CN2 second connection structure CP1 first interleaving point CP2 second interleaving point Cp parasitic capacitance S1, first side S2, second side S3, third side S4, fourth side IOE, input/output end A, virtual line L, Q, curve Detailed Description The following detailed description is based on embodiments and the accompanying drawings, but the specific embodiments are described only for illustrating the invention and are not intended to limit the invention, and the description of the structure operation is not meant to limit the order of execution, and any structure in which elements are rearranged to produce a device with equivalent results is within the scope of the invention. The words (terms) used throughout this specification and claims have the ordinary meaning in the art, within the context of this invention and in the specific context, unless otherwise indicated. As used herein, "coupled" or "connected" may mean that two or more elements are in direct physical or electrical contact with each other, or in indirect physical or electrical contact with each other, or that two or more elements may operate or function with each other. Referring to fig. 1, fig. 1 illustrates an inductive device 100 according to some embodiments of the invention. The inductance device 100 includes a first winding C1, a second winding C2, a first connection structure CN1, a second connection structure CN2, and an input/output terminal IOE. In some embodiments, the first winding C1 and the second winding C2 overlap each other and are configured by the first connection structure CN1 and the second connection structure CN 2. It should be understood that overlapping in the present invention refers to substantially overlapping or substantially overlapping. Specifically, the second connection