CN117133723A - W wave band AiP module based on glass substrate encapsulation - Google Patents

W wave band AiP module based on glass substrate encapsulation Download PDF

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Publication number
CN117133723A
CN117133723A CN202310964381.4A CN202310964381A CN117133723A CN 117133723 A CN117133723 A CN 117133723A CN 202310964381 A CN202310964381 A CN 202310964381A CN 117133723 A CN117133723 A CN 117133723A
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CN
China
Prior art keywords
glass substrate
glass
metallized
layer
chip
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Pending
Application number
CN202310964381.4A
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Chinese (zh)
Inventor
李飞
任婷
李东来
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Aerospace Science And Technology Microsystem Technology Co ltd
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Aerospace Science And Technology Microsystem Technology Co ltd
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Priority to CN202310964381.4A priority Critical patent/CN117133723A/en
Publication of CN117133723A publication Critical patent/CN117133723A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/28Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/29Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
    • H01L23/291Oxides or nitrides or carbides, e.g. ceramics, glass
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/28Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/31Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
    • H01L23/3107Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
    • H01L23/3121Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed a substrate forming part of the encapsulation
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/373Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/48Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • H01L23/488Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
    • H01L23/498Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
    • H01L23/49827Via connections through the substrates, e.g. pins going through the substrate, coaxial cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/58Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
    • H01L23/64Impedance arrangements
    • H01L23/66High-frequency adaptations
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2283Supports; Mounting means by structural association with other equipment or articles mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061Two dimensional planar arrays
    • H01Q21/065Patch antenna array

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The invention provides a W-band AiP module based on glass substrate packaging, which integrates a 16-unit array antenna and a 16-channel multifunctional chip into a AiP module in a W-band by adopting a glass substrate packaging method and a three-dimensional interconnection technology based on glass through hole manufacturing. The chip in the module is embedded into the glass substrate, and the bottom of the chip is connected with the outer surface of the glass substrate through the metallized glass through hole to realize the heat dissipation function. And designing a circle of quadrilateral metal wall on each surface around the glass substrate, and ensuring the air tightness of the module after bonding. This patent integrated level is high, and heat dispersion is good and have airtight characteristics. The module can be conveniently arranged on a plane or a curved surface and spliced to expand the scale of the antenna array. A plurality of modules are spliced on a motherboard through attachment to form a large-scale phased array antenna array, so that a standard module can be formed to realize automatic mass production, and the reliability and maintainability are greatly improved. Has wide application prospect in the fields of ground communication, radar detection and military national defense.

Description

W wave band AiP module based on glass substrate encapsulation
Technical Field
The invention relates to the field of packaging materials and processes, in particular to a W-band AiP module based on glass substrate packaging.
Background
AiP (antenna package) is a technology for integrating an antenna and a chip into a package based on packaging materials and processes to realize a system-level wireless function. AiP conforms to the trend of improving the integration level of the semiconductor process, gives consideration to the performance, cost and volume of the antenna, and represents great achievement of the antenna technology in recent years and the technical upgrading direction of the millimeter wave frequency band terminal antenna.
With the development of technology and the increase of user requirements, millimeter wave applications are evolving towards higher frequency bands. The W wave band has received more attention in terms of its advantages of low attenuation, high resolution and ultra-wideband, and has important applications in the fields of automotive radar, airport runway foreign matter debris detection, satellite communication, short-range high-speed communication and the like.
The millimeter wave AiP module takes a packaging substrate as an antenna and a signal interconnection layer, and is connected with a chip through flip chip, wherein the substrate is mostly made of composite materials, ceramics and silicon. In the W wave band, the integration density of the HDI technology is low, and the composite material does not meet the air tightness requirement; the LTCC sealing process has higher integration density, but the ceramic dielectric property is poor and the high-frequency transmission loss is large; the FOWLP process has the highest integration density, but the silicon material belongs to a semiconductor material, has poor electrical property, has stronger electromagnetic coupling effect with a substrate material when a transmission line transmits signals, and generates eddy current phenomenon in the substrate, so that the signal integrity is poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a W-band AiP module based on Glass substrate packaging, wherein a three-dimensional interconnection Technology (TGV) based on Glass Through hole manufacturing is commonly used for three-dimensional integration and system-level packaging due to the characteristics of high-density interconnection (line width/line distance, aperture and pore disk size can be in the order of a few micrometers) and low-loss transmission characteristics. The glass substrate has good air tightness, no free moving charges in the material, good dielectric property, low high-frequency loss and good transmission characteristic, and is suitable for high-frequency application. The TGV technology does not need to manufacture an insulating layer, and reduces the process complexity and the processing cost. Therefore, it is very advantageous to develop the W-band AiP module using TGV technology based on the glass substrate package.
In order to solve the problems in the prior art, the invention discloses a W-band AiP module based on glass substrate packaging, which comprises a first glass substrate, a second glass substrate, a third glass substrate, a fourth glass substrate and a fifth glass substrate; the first glass substrate is provided with an antenna array layer, the second glass substrate is provided with a grounding layer of an antenna array, and the first glass substrate is bonded with the second glass substrate through metal; the third glass substrate is provided with a feeder line layer, and is bonded with the second glass substrate through metal; the fourth glass substrate is provided with a signal layer, and is bonded with the third glass substrate through metal; the fifth glass substrate is used as a base for placing the chip and is also provided with a module interface layer of the chip, and the fifth glass substrate is bonded with the fourth glass substrate through metal; and a grounding layer is arranged at the bottom of the fifth glass substrate.
Further, the antenna array layer is an array formed by a plurality of antenna unit radiating patches.
Further, the feeder layer includes a feeder, first metalized glass through holes and second metalized glass through holes, the number of the first metalized glass through holes and the number of the second metalized glass through holes are consistent with the number of the antenna unit radiation pieces, each first metalized glass through hole is connected with one antenna unit radiation piece, all second metalized glass through holes are connected with a chip, one side of the feeder is connected with all first metalized glass through holes, the other side of the feeder is connected with all second metalized glass through holes to form an antenna excitation signal path, and excitation signals in the chip 11 are transmitted to a plurality of antenna unit radiation pieces.
Further, the signal layer comprises a signal wire and a third metalized glass through hole, the third metalized glass through hole is connected with the chip, the signal wire is connected with the third metalized glass through hole, and the signal wire is used for transmitting radio frequency signals, power supplies and digital signals in the chip to the module interface.
Further, the module interface layer comprises a fourth metallized glass through hole and a fifth metallized glass through hole, and the fourth metallized glass through hole and the fifth metallized glass through hole are respectively connected with the signal wire.
Further, the ground layer comprises a plurality of sixth metallized glass through holes, one ends of the sixth metallized glass through holes are connected with the bottom of the chip, the other ends of the sixth metallized glass through holes are grounded, and the sixth metallized glass through holes serve as heat conduction channels to transfer heat generated by the chip to the metal part of the ground layer.
Further, the edges of the first glass substrate, the second glass substrate, the third glass substrate, the fourth glass substrate and the fifth glass substrate are all provided with metal walls.
Further, the antenna further comprises a seventh metallized glass through hole penetrating through the antenna array layer, the grounding layer, the feeder line layer, the signal layer, the module interface layer and the grounding layer, wherein the seventh metallized glass through hole is used for connecting all the metal walls into a whole.
Further, the number of the radiating patches of the antenna unit is 16, and the array is 4×4.
Further, the overall module size is 6×6mm.
The invention has the beneficial effects that:
according to the invention, a packaging method of a Glass substrate is adopted, and a 16-unit array antenna and a 16-channel multifunctional chip are integrated into a AiP module in a W wave band based on a three-dimensional interconnection Technology (TGV) manufactured by Glass Through holes. The chip in the module is embedded into the glass substrate, and the bottom of the chip is connected with the outer surface of the glass substrate through the metallized glass through hole to realize the heat dissipation function. And designing a circle of quadrilateral metal wall on each surface around the glass substrate, and ensuring the air tightness of the module after bonding. This patent integrated level is high, and heat dispersion is good and have airtight characteristics. The module can be conveniently arranged on a plane or a curved surface and spliced to expand the scale of the antenna array.
Drawings
FIG. 1 is a schematic top view of the structure of the present invention;
FIG. 2 is a schematic diagram of a laminated structure of the present invention;
FIG. 3 is a schematic view of a bonded metal wall according to the present invention;
fig. 4 is an S11 waveform diagram of an antenna unit according to the present invention;
fig. 5 is a pattern of antenna elements (94 GHz);
fig. 6 is an antenna array scan pattern (94 GHz).
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, the W-band AiP module based on the glass substrate package of the present invention is composed of a 4×4 unit antenna array, a W-band 16-channel multi-functional bare chip and 5 layers of glass substrates. The overall module size was 6 x 6mm.
As shown in fig. 2, the module consists of 5 glass substrates (G1 to G5) and 6 metal layers (M1 to M6);
specifically, the modules are divided into a first glass substrate G1, a second glass substrate G2, a third glass substrate G3, a fourth glass substrate G4 and a fifth glass substrate G5 from top to bottom; the first glass substrate G1 is provided with an antenna array layer M1, the second glass substrate G2 is provided with a grounding layer M2 of an antenna array, and the first glass substrate G1 is bonded with the second glass substrate G2 through metal; the third glass substrate G3 is provided with a feeder line layer M3, and the third glass substrate G3 is bonded with the second glass substrate G2 through metal; the fourth glass substrate G4 is provided with a signal layer M4, and the fourth glass substrate G4 is bonded with the third glass substrate G3 through metal; the fifth glass substrate G5 is used as a base for placing the chip 11, and is also provided with a module interface layer M5 of the chip 11, and the fifth glass substrate G5 is bonded with the fourth glass substrate G4 through metal; the bottom of the fifth glass substrate G5 is provided with a ground layer M6.
The antenna array layer M1 is a 4×4 array formed by 16 antenna unit radiating patches 1. The feeder layer M3 comprises a feeder 2, first metalized glass through holes 4 and second metalized glass through holes 5, the number of the first metalized glass through holes 4 and the second metalized glass through holes 5 is consistent with that of the antenna unit radiation sheets 1, each first metalized glass through hole 4 is connected with one antenna unit radiation sheet 1, all second metalized glass through holes 5 are connected with a chip 11, one side of the feeder 2 is connected with all first metalized glass through holes 4, the other side of the feeder 2 is connected with all second metalized glass through holes 5 to form an antenna excitation signal path, excitation signals in the W-band 16-channel multifunctional bare chip 11 are transmitted to 16 antenna unit radiation sheets, and the function of external radiation is realized.
The signal layer M4 comprises a signal wire 3 and a third metalized glass through hole 6, the third metalized glass through hole 6 is connected with a chip 11, the signal wire 3 is connected with the third metalized glass through hole 6, the module interface layer M5 comprises a fourth metalized glass through hole 7 and a fifth metalized glass through hole 8, the fourth metalized glass through hole 7 and the fifth metalized glass through hole 8 are respectively connected with the signal wire 3, and the signal wire 3 is used for transmitting radio frequency signals, power supplies and digital signals in the chip 11 to a module interface. The control of the antenna array beam is realized by changing the amplitude and the phase of the excitation signal of the multifunctional bare chip.
The ground layer M6 includes a plurality of sixth metallized glass through holes 9, one end of the sixth metallized glass through holes 9 is connected to the bottom of the chip 11, the other end is grounded, and the sixth metallized glass through holes 9 serve as heat conduction channels to transfer heat generated by the chip 11 to the metal portion of the ground layer M6.
As shown in fig. 3, metal walls are arranged at the edges of the first glass substrate G1, the second glass substrate G2, the third glass substrate G3, the fourth glass substrate G4 and the fifth glass substrate G5, and after bonding, the air tightness of the interior between the layers can be ensured, so that the whole module meets the air tightness requirement; the antenna further comprises a seventh metalized glass through hole 10 penetrating through the antenna array layer M1, the grounding layer M2, the feeder line layer M3, the signal layer M4, the module interface layer M5 and the grounding layer M6, wherein the seventh metalized glass through hole 10 is used for connecting all metal walls into a whole, and the grounding interconnection among multiple layers is ensured.
As shown in fig. 4, the antenna unit of the glass substrate has a radiation pattern with better uniformity in two orthogonal sections phi=0° and 90 ° (fig. 5) and a unit gain of > 5dBi within the range of 92 GHz-96 GHz S11 < -10 dB. FIG. 6 is a scan pattern for a 16 element antenna array with an antenna array gain of 14.2dBi at 15.8dBi normal to an antenna array gain of + -45 deg., with side lobe suppression of > 10dB.
The W-band AiP module based on glass substrate packaging provided by the invention is a great innovation of the existing radio frequency front end in architecture, and has the characteristics of high integration level, low loss and air tightness. The structure design and innovation point are also suitable for the design of the millimeter wave full-band glass substrate package AiP module. A plurality of modules are spliced on a motherboard through attachment to form a large-scale phased array antenna array, so that a standard module can be formed to realize automatic mass production, and the reliability and maintainability are greatly improved. Has wide application prospect in the fields of ground communication, radar detection and military national defense.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Also in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. And in the drawings of the present invention, the filling patterns are only for distinguishing the layers, and are not limited in any way.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. W wave band AiP module based on glass substrate encapsulation, its characterized in that includes: a first glass substrate (G1), a second glass substrate (G2), a third glass substrate (G3), a fourth glass substrate (G4), and a fifth glass substrate (G5); the first glass substrate (G1) is provided with an antenna array layer (M1), the second glass substrate (G2) is provided with a grounding layer (M2) of an antenna array, and the first glass substrate (G1) is bonded with the second glass substrate (G2) through metal; the third glass substrate (G3) is provided with a feeder line layer (M3), and the third glass substrate (G3) is bonded with the second glass substrate (G2) through metal; the fourth glass substrate (G4) is provided with a signal layer (M4), and the fourth glass substrate (G4) is bonded with the third glass substrate (G3) through metal; the fifth glass substrate (G5) is used as a base for placing the chip (11), and is also provided with a module interface layer (M5) of the chip (11), and the fifth glass substrate (G5) is bonded with the fourth glass substrate (G4) through metal; the bottom of the fifth glass substrate (G5) is provided with a grounding layer (M6).
2. The W-band AiP module based on glass substrate packaging of claim 1, wherein the antenna array layer (M1) is an array of several antenna element radiating patches (1).
3. The W-band AiP module based on a glass substrate package according to claim 2, wherein the feeder layer (M3) comprises a feeder (2), first metallized glass through holes (4) and second metallized glass through holes (5), the number of the first metallized glass through holes (4) and the second metallized glass through holes (5) is consistent with the number of the antenna element radiating patches (1), each first metallized glass through hole (4) is connected with one antenna element radiating patch (1), all second metallized glass through holes (5) are connected with a chip (11), one side of the feeder (2) is connected with all first metallized glass through holes (4), and the other side is connected with all second metallized glass through holes (5) to form an antenna excitation signal path, and excitation signals in the chip 11 are transmitted to a plurality of antenna element radiating patches (1).
4. The W-band AiP module based on a glass substrate package of claim 1, wherein the signal layer (M4) comprises a signal line (3) and a third metallized glass via (6), the third metallized glass via (6) being connected to the chip (11), the signal line (3) being connected to the third metallized glass via (6), the signal line (3) being for transmitting radio frequency signals, power and digital signals in the chip (11) to the module interface.
5. The W-band AiP module based on a glass substrate package of claim 4, wherein the module interface layer (M5) comprises a fourth metallized glass via (7) and a fifth metallized glass via (8), the fourth metallized glass via (7) and the fifth metallized glass via (8) being connected to the signal line (3), respectively.
6. The W-band AiP module based on a glass substrate package of claim 1, wherein the ground layer (M6) comprises a plurality of sixth metallized glass vias (9), one end of the sixth metallized glass vias (9) is connected to the bottom of the chip (11) and the other end is grounded, and the sixth metallized glass vias (9) serve as heat conduction channels to transfer heat generated by the chip (11) to the metal portion of the ground layer (M6).
7. The W-band AiP module based on glass substrate packaging of claim 1, wherein the edges of the first (G1), second (G2), third (G3), fourth (G4) and fifth (G5) glass substrates are provided with metal walls.
8. The W-band AiP module of claim 7, further comprising a seventh metallized glass via (10) extending through the antenna array layer (M1), the ground layer (M2), the feed line layer (M3), the signal layer (M4), the module interface layer (M5) and the ground layer (M6), the seventh metallized glass via (10) being configured to connect all metal walls together.
9. The W-band AiP module based on glass substrate packaging of claim 2, wherein the number of antenna element radiating patches (1) is 16, constituting a 4 x 4 array.
10. The W-band AiP module of claim 1, wherein the overall module size is 6 x 6mm.
CN202310964381.4A 2023-08-02 2023-08-02 W wave band AiP module based on glass substrate encapsulation Pending CN117133723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310964381.4A CN117133723A (en) 2023-08-02 2023-08-02 W wave band AiP module based on glass substrate encapsulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310964381.4A CN117133723A (en) 2023-08-02 2023-08-02 W wave band AiP module based on glass substrate encapsulation

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CN117133723A true CN117133723A (en) 2023-11-28

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