WO2020180145A1 - 패키징 기판 및 이를 포함하는 반도체 장치 - Google Patents
패키징 기판 및 이를 포함하는 반도체 장치 Download PDFInfo
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- WO2020180145A1 WO2020180145A1 PCT/KR2020/003167 KR2020003167W WO2020180145A1 WO 2020180145 A1 WO2020180145 A1 WO 2020180145A1 KR 2020003167 W KR2020003167 W KR 2020003167W WO 2020180145 A1 WO2020180145 A1 WO 2020180145A1
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Definitions
- the embodiment relates to a packaging substrate and a semiconductor device including the same.
- FE Front-End
- BE Back-End
- the four core technologies of the semiconductor industry that have enabled the rapid development of recent electronic products are semiconductor technology, semiconductor packaging technology, manufacturing process technology, and software technology.
- Semiconductor technology is developing in various forms, such as a line width of sub-micron nano units, more than 10 million cells, high-speed operation, and dissipation of a lot of heat, but relatively completely packaging technology is not supported. Accordingly, the electrical performance of the semiconductor is sometimes determined by the packaging technology and the electrical connection accordingly rather than the performance of the semiconductor technology itself.
- Ceramic or resin is used as a material for the packaging substrate.
- a ceramic substrate it is difficult to mount a high-performance, high-frequency semiconductor device due to high resistance value or high dielectric constant.
- a resin substrate it is possible to mount a relatively high-performance, high-frequency semiconductor element, but there is a limit to reducing the pitch of wiring.
- An object of the embodiment is to provide a more integrated packaging substrate and a semiconductor device including the same by applying a glass substrate.
- a packaging substrate electrically connected to the semiconductor device;
- a motherboard electrically connected to the packaging substrate and transmitting and connecting the semiconductor device and an external electrical signal to each other;
- the packaging substrate includes a core layer and an upper layer positioned on the core layer,
- the core layer includes a glass substrate and a core via
- the glass substrate has a first surface and a second surface facing each other,
- a plurality of core vias are disposed to penetrate the glass substrate in the thickness direction
- the core layer includes a core distribution layer positioned on the surface of the glass substrate or the core via,
- At least a part of the core distribution layer electrically connects the electroconductive layer on the first surface and the electroconductive layer on the second surface through the core via,
- the upper layer is located on the first surface and includes an electrically conductive layer electrically connecting the core distribution layer and an external semiconductor device unit,
- the thickness of the thinner electrically conductive layer of the core distribution layer may be equal to or thicker than the width of the thinner electrically conductive layer of the upper layer.
- the thickness of the thinner one of the electrical conductive layers of the core distribution layer may have a thickness of 1 to 12 times the thickness of the thinner one of the top layer of the electrical conductive layer.
- the upper insulating layer is located on the first surface
- the upper distribution pattern is an electrically conductive layer to which the core distribution layer and at least a portion thereof are electrically connected, and is embedded in the upper insulating layer,
- the upper distribution pattern includes a fine pattern in at least a portion thereof
- the width and spacing of the fine patterns may be less than 4 ⁇ m, respectively.
- the second surface distribution pattern is an electrically conductive layer positioned on the second surface
- the width of the thicker one of the second surface distribution patterns may be 1 to 20 times the width of the thinner one of the electrical conductive layers of the upper layer.
- the packaging substrate according to one embodiment,
- the core layer includes a glass substrate and a core via
- the glass substrate has a first surface and a second surface facing each other,
- a plurality of the core vias are disposed to penetrate the glass substrate in the thickness direction
- the core layer includes a core distribution layer positioned on the surface of the glass substrate or the core via,
- At least a part of the core distribution layer electrically connects the electroconductive layer on the first surface and the electroconductive layer on the second surface through the core via,
- the upper layer is located on the first surface and includes an electrically conductive layer electrically connecting the core distribution layer and an external semiconductor device unit,
- the thickness of the thinner electrically conductive layer of the core distribution layer may be equal to or thicker than the width of the thinner electrically conductive layer of the upper layer.
- a packaging substrate electrically connected to the semiconductor device;
- a motherboard electrically connected to the packaging substrate and transmitting and connecting the semiconductor device and an external electrical signal to each other;
- the packaging substrate includes a core layer and an upper layer positioned on the core layer,
- the core layer includes a glass substrate and a core via
- the glass substrate has a first surface and a second surface facing each other,
- a plurality of the core vias are disposed to penetrate the glass substrate in the thickness direction
- the core layer includes a core distribution layer positioned on the surface of the glass substrate or the core via,
- At least a part of the core distribution layer electrically connects the electroconductive layer on the first surface and the electroconductive layer on the second surface through the core via,
- the upper layer is located on the first surface and includes an electrically conductive layer electrically connecting the core distribution layer and an external semiconductor device unit,
- the thickness of the thinner electrically conductive layer of the core distribution layer may be equal to or thicker than the thinner of the electrically conductive layer of the upper layer.
- the thickness of the thinner one of the electrical conductive layers of the core distribution layer may have a thickness of 0.7 to 12 times the thickness of the thinner one of the top layer of the electrical conductive layer.
- the upper insulating layer is located on the first surface
- the upper distribution pattern is an electrically conductive layer to which the core distribution layer and at least a portion thereof are electrically connected, and is embedded in the upper insulating layer,
- the upper distribution pattern includes a fine pattern in at least a portion thereof
- the width and spacing of the fine patterns may be less than 4 ⁇ m, respectively.
- the second surface distribution pattern is an electrically conductive layer positioned on the second surface
- the width of the thicker one of the second surface distribution patterns may be 0.7 to 20 times the thickness of the thinner one of the electrical conductive layers of the upper layer.
- the packaging substrate according to another embodiment,
- the core layer includes a glass substrate and a core via
- the glass substrate has a first surface and a second surface facing each other,
- a plurality of the core vias are disposed to penetrate the glass substrate in the thickness direction
- the core layer includes a core distribution layer positioned on the surface of the glass substrate or the core via,
- At least a part of the core distribution layer electrically connects the electroconductive layer on the first surface and the electroconductive layer on the second surface through the core via,
- the upper layer is located on the first surface and includes an electrically conductive layer electrically connecting the core distribution layer and an external semiconductor device unit,
- the thickness of the thinner electrically conductive layer of the core distribution layer may be equal to or thicker than the thinner of the electrically conductive layer of the upper layer.
- the packaging substrate of the embodiment and the semiconductor device including the same may significantly improve electrical characteristics such as a signal transmission speed by connecting the semiconductor device and the motherboard closer to each other so that the electrical signal is transmitted over the shortest distance possible.
- the glass substrate applied as the core of the substrate is itself an insulator, there is almost no fear of occurrence of parasitic elements compared to the conventional silicon core, so that the insulating film treatment process can be more simplified and can be applied to high-speed circuits.
- FIG. 1 is a conceptual diagram illustrating a cross-section of a semiconductor device according to an embodiment.
- FIG. 2 is a conceptual diagram illustrating a cross section of a packaging substrate according to another embodiment.
- 3A and 3B are conceptual diagrams each illustrating a cross section of a core via applied in an embodiment.
- FIGS. 4 and 5 are detailed conceptual diagrams each illustrating a part of a cross-section of a packaging substrate according to an embodiment (circles show a state observed from the top or bottom).
- 6 to 8 are flow charts illustrating a manufacturing process of a packaging substrate according to the embodiment in cross section.
- the term "combination of these" included in the expression of the Makushi form means one or more mixtures or combinations selected from the group consisting of the constituent elements described in the expression of the Makushi form, and the constituent elements It means to include one or more selected from the group consisting of.
- the “ ⁇ ” system may mean including a compound corresponding to “ ⁇ ” or a derivative of “ ⁇ ” in the compound.
- B is located on A means that B is located directly on A or B is located on A while another layer is located between them, and B is located so as to contact the surface of A. It is limited to that and is not interpreted.
- the inventors recognized that not only the device itself but also the packaging part is an important factor in improving performance, and were researching it.
- the glass core is applied as a single layer, the shape of the through via, and the width of the electrically conductive layer formed therein. It was confirmed that the packaging substrate can be made thinner by applying a method of controlling the thickness, etc. to help improve the electrical properties of the semiconductor device and completed the invention.
- FIG. 1 is a conceptual diagram illustrating a cross-section of a semiconductor device according to an exemplary embodiment
- FIG. 2 is a conceptual diagram illustrating a cross-section of a packaging substrate according to another exemplary embodiment
- FIG. 3 is a core applied in an exemplary embodiment.
- FIGS. 4 and 5 are detailed conceptual diagrams each illustrating a part of a cross section of a packaging substrate according to an exemplary embodiment (circles indicate a state observed from the top or bottom surface).
- FIGS. 1 to 5 will be described in more detail with reference to FIGS. 1 to 5.
- a semiconductor device 100 includes a semiconductor device portion 30 in which one or more semiconductor devices 32, 34, and 36 are positioned; A packaging substrate 20 electrically connected to the semiconductor device; And a motherboard 10 that is electrically connected to the packaging substrate, transmits an external electrical signal to the semiconductor device, and connects to each other.
- the packaging substrate 20 includes a core layer 22; And an upper layer 26;
- the semiconductor device part 30 refers to devices mounted on a semiconductor device, and is mounted on the packaging substrate 20 by connection electrodes or the like.
- the semiconductor device unit 30 includes, for example, an arithmetic device such as a CPU and a GPU (first device: 32, a second device: 34), and a memory device such as a memory chip (third device, 36).
- an arithmetic device such as a CPU and a GPU
- a memory device such as a memory chip
- any semiconductor device mounted on a semiconductor device can be applied without limitation.
- the motherboard 10 may be a motherboard such as a printed circuit board or a printed wiring board.
- the packaging substrate 20 includes a core layer 22; And an upper layer 26 positioned on one surface of the core layer.
- the packaging substrate 20 may further include a lower layer 29 selectively positioned under the core layer.
- the core layer 22 includes a glass substrate 21; A plurality of core vias 23 penetrating the glass substrate in the thickness direction; And a core distribution layer on which an electroconductive layer is located on the surface of the glass substrate or the core via, at least a part of which electrically connects the electroconductive layer on the first surface and the second surface through the core via ( 24); includes.
- the glass substrate 21 has a first surface 213 and a second surface 214 facing each other, and the two surfaces are substantially parallel to each other, so that the entire glass substrate has a constant thickness.
- a core via 23 penetrating the first and second surfaces is disposed on the glass substrate 21.
- a silicon substrate and an organic substrate are laminated.
- silicon substrates due to the nature of semiconductors, parasitic elements may occur when applied to high-speed circuits, and power losses are relatively large.
- organic substrates a larger area is required to form a more complex distribution pattern, but this does not correspond to the flow of manufacturing microelectronic devices.
- it is necessary to substantially refine the pattern but there is a practical limit to pattern refinement due to the characteristics of materials such as polymers applied to organic substrates.
- the glass substrate 21 is applied as a support for the core layer 22 as a method of solving these problems.
- the core via 23 formed while penetrating the glass substrate together with the glass substrate the length of the electrical flow is shorter, smaller, faster response, and a packaging substrate 20 having less loss characteristics. to provide.
- the glass substrate 21 is preferably a glass substrate applied to a semiconductor.
- a borosilicate glass substrate, an alkali-free glass substrate, etc. may be applied, but the present invention is not limited thereto.
- the glass substrate 21 may have a thickness of 1,000 ⁇ m or less, may be 100 to 1,000 ⁇ m, and may be 100 to 700 ⁇ m. More specifically, the glass substrate 21 may have a thickness of 100 to 500 ⁇ m. Forming a thinner packaging substrate is advantageous in that electrical signal transmission can be more efficient, but since it must also serve as a support, it is preferable to apply the glass substrate 21 having the above-described thickness.
- the thickness of the glass substrate refers to the thickness of the glass substrate itself excluding the thickness of the electrically conductive layer on the glass substrate.
- the glass substrate 21 has a core via 23 together with the glass substrate 21.
- the core via 23 may be formed by removing a predetermined region of the glass substrate 21, and specifically, may be formed by etching plate-shaped glass by physical and/or chemical methods.
- a method of chemically etching after forming a defect (fault) on the surface of a glass substrate by a method such as a laser, or a laser etching method may be applied, but is not limited thereto.
- the core via 23 may include a first opening 233 in contact with the first surface; A second opening 234 in contact with the second surface; And a minimum inner diameter portion 235, which is a region having the narrowest inner diameter of the entire core via connecting the first opening portion and the second opening portion.
- the diameter of the first opening (CV1) and the diameter of the second opening (CV2) may be substantially different, and the first opening (CV1) and the second opening (CV2) may have substantially the same diameter. .
- the minimum inner diameter portion may be located in the first opening or the second opening, and in this case, the core via may be a cylindrical or (cut) triangular pyramidal core via.
- the diameter of the minimum inner diameter (CV3) corresponds to the diameter of the smaller of the first opening and the second opening.
- the minimum inner diameter portion is located between the first opening and the second opening, and the core via may be a barrel-shaped core via.
- the diameter of the minimum inner diameter (CV3) may be smaller than a larger one of the diameter of the first opening and the diameter of the second opening.
- the core distribution layer 24 includes a core distribution pattern 241, which is an electrically conductive layer electrically connecting the first and second surfaces of the glass substrate through a through via, and a core insulating layer 223 surrounding the core distribution pattern. ).
- the core layer 22 has an electrically conductive layer formed therein through a core via to serve as an electrical path across the glass substrate 21, and connects the upper and lower portions of the glass substrate over a relatively short distance to provide faster electrical It can have the characteristics of signal transmission and low loss.
- the core distribution pattern 241 is a pattern that electrically connects the first surface 213 and the second surface 214 of the glass substrate through a core via 23, and specifically, the first surface 213 A first surface distribution pattern 241a, which is an electrically conductive layer on at least part of the second surface 214, a second surface distribution pattern 241c, which is an electrically conductive layer on at least a part of the second surface 214, and the first And a core via distribution pattern 241b which is an electrically conductive layer electrically connecting the surface distribution pattern and the second surface distribution pattern to each other through the core via 23.
- the electrically conductive layers may be, for example, applied with a copper plating layer, but are not limited thereto.
- the core via 23 may include a first opening 233 in contact with the first surface; A second opening 234 in contact with the second surface; And a minimum inner diameter portion 235, which is a region having the narrowest inner diameter of the entire core via connecting the first opening portion and the second opening portion.
- the glass substrate 21 serves as an intermediate and intermediary for connecting the semiconductor device 30 and the motherboard 10 to the upper and lower portions, respectively, and the core via 23 serves as a path for transmitting their electrical signals. The signal is smoothly transmitted.
- the thickness of the electrically conductive layer measured from the larger of the first surface opening diameter and the second surface opening diameter may be equal to or thicker than the thickness of the electrically conductive layer formed on a portion of the core via having a minimum inner diameter.
- the core distribution layer 24 is an electrically conductive layer formed on a glass substrate, and a cross cut adhesion test value according to ASTM D3359 may satisfy 4B or more, and specifically 5B or more.
- the electroconductive layer which is the core distribution layer 24, may have an adhesive force of 3 N/cm or more with the glass substrate, and may have a bonding force of 4.5 N/cm or more. When this degree of adhesion is satisfied, it has sufficient adhesion between the substrate and the electroconductive layer to be applied as a packaging substrate.
- An upper layer 26 is positioned on the first surface 213.
- the upper layer 26 includes an upper distribution layer 25 and a top connection layer 27 positioned on the upper distribution layer, and the uppermost surface of the upper layer 26 can directly contact the connection electrodes of the semiconductor device. It may be protected by the cover layer 60 in which the opening is formed.
- the upper distribution layer 25 includes an upper insulating layer 253 positioned on the first surface;
- the core distribution layer 24 and at least a portion thereof are electrically conductive layers having a predetermined pattern and include an upper distribution pattern 251 embedded in the upper insulating layer.
- the upper insulating layer 253 may be applied as long as it is applied as an insulator layer to a semiconductor device or a packaging substrate, and for example, an epoxy resin including a filler may be applied, but is not limited thereto.
- the insulator layer may be formed by forming and curing a coating layer, or may be formed by laminating and curing an insulator film filmed in an uncured or semi-cured state on the core layer. In this case, if a pressure-sensitive lamination method or the like is applied, the insulator is inserted into the space inside the core via, thereby enabling efficient process progress. In addition, even if a plurality of insulator layers are stacked and applied, it may be difficult to distinguish between the insulator layers, and a plurality of insulator layers are collectively referred to as an upper insulating layer. In addition, the same insulating material may be applied to the core insulating layer 223 and the upper insulating layer 253, and in this case, the boundary may not be substantially separated.
- the upper distribution pattern 251 refers to an electrically conductive layer positioned within the upper insulating layer 253 in a preset shape, and may be formed in, for example, a build-up layer method. Specifically, an insulator layer is formed, an unnecessary portion of the insulator layer is removed, an electrical conductive layer is formed by copper plating, etc., and an unnecessary portion of the electrical conductive layer is selectively removed. After forming a layer, removing unnecessary parts again, repeating the method of forming an electroconductive layer by plating, etc., to form the upper distribution pattern 251 in which the battery conductive layer is formed in the vertical or horizontal direction in the intended pattern. I can.
- the upper distribution pattern 251 is located between the core layer 22 and the semiconductor device part 30, the transfer of the electrical signal to the semiconductor device part 30 is smoothly performed, and the intended complex pattern is sufficient.
- the fine pattern may be less than about 4 ⁇ m in width and spacing, less than about 3.5 ⁇ m, less than about 3 ⁇ m, less than about 2.5 ⁇ m, and about 1 to about It may be 2.3 ⁇ m.
- the interval may be an interval between fine patterns adjacent to each other (hereinafter, the description of fine patterns is the same).
- the upper distribution pattern 251 to include a fine pattern, at least two or more methods are applied in the embodiment.
- the glass substrate 21 may have a fairly flat surface characteristic with a surface roughness Ra of 10 angstroms or less, and thus the influence of the surface morphology of the support substrate on the formation of a fine pattern can be minimized.
- the other is in the characteristics of the insulator.
- a filler component is often applied together with a resin, and inorganic particles such as silica particles may be applied as the filler.
- inorganic particles such as silica particles
- the size of the inorganic particles may affect whether or not a fine pattern is formed.
- a particulate filler having an average diameter of about 150 nm or less is applied. , Specifically, it includes a particulate filler having an average diameter of about 1 to about 100 nm.
- the top connection layer 27 is electrically connected to the top distribution pattern 251 and at least a portion thereof, and includes a top connection pattern 272 located on the top insulating layer 253, the semiconductor device part 30, and the It includes a top connection electrode 271 electrically connecting the top connection pattern 272.
- the top connection pattern 272 may be positioned on one surface of the upper insulating layer 253, or at least a portion thereof may be exposed and embedded on the upper insulating layer.
- the upper insulating layer may be formed by plating or the like, and a part of the top surface connection pattern is exposed on the upper insulating layer. If it is embedded, a part of the insulating layer or the electrically conductive layer may be removed by a method such as surface polishing or surface etching after forming a copper plating layer or the like.
- the top connection pattern 272 may include at least a portion thereof. In this way, the top connection pattern 272 including a fine pattern allows a plurality of devices to be electrically connected even under a narrow area, making electrical signal connection between devices more smooth and more integrated packaging possible. Do.
- the top connection electrode 271 may be directly connected to the semiconductor device unit 30 through a terminal or the like, or may be connected via a device connection part 51 such as a solder ball.
- the packaging substrate 20 is also connected to the motherboard 10.
- a second surface distribution pattern 241c which is a core distribution layer positioned on at least a portion of the second surface 214 of the core layer 22, may be directly connected to a terminal of the motherboard. In addition, it may be electrically connected through a board connection such as a solder ball.
- the second surface distribution pattern 241c may be connected to the motherboard 10 via a lower layer 29 positioned under the core layer 22.
- the lower layer 29 includes a lower partial double layer 291 and a lower surface connection layer 292.
- the lower partial double layer 291 includes: i) a lower insulating layer 291b in which the second surface 214 and at least a portion thereof contact; And ii) a lower part-fold pattern 291a which is embedded (buried) in the lower insulating layer and has a predetermined pattern, and in which the core distribution layer and at least a portion thereof are electrically connected.
- the lower surface connection layer 292 includes i) a lower surface connection electrode 292a that is electrically connected to the lower surface connection pattern, and ii) the lower partial belly pattern and at least a portion thereof are electrically connected, and is formed on one surface of the lower insulating layer. It may further include a lower surface connection pattern (292b) at least a part of the exposed.
- the lower surface connection pattern 292b is a portion connected to the motherboard 10 and may be formed as a non-fine pattern having a width wider than that of the fine pattern unlike the upper surface connection pattern 272 for more efficient electrical signal transmission.
- One of the characteristics of the present invention is that substantially no other substrates other than the glass substrate 21 are applied to the packaging substrate 20 positioned between the semiconductor device unit 30 and the motherboard 10.
- an interposer and an organic substrate were stacked together to apply an interposer and an organic substrate between the device and the motherboard.
- This is understood to have been applied in a multi-stage form for at least two reasons.
- One is that there is a problem with scale in directly bonding the fine pattern of the device to the motherboard, and the other is that during the bonding process or driving the semiconductor device. This is because a problem of wiring damage due to a difference in thermal expansion coefficient may occur during the process.
- a glass substrate having a coefficient of thermal expansion similar to that of a semiconductor device is applied, and a fine pattern having a fine scale sufficient for device mounting is formed on the first surface and the upper layer of the glass substrate, thereby solving this problem.
- a thickness of a thinner one of the conductive layers of the core distribution layer 24 may be equal to or thicker than a width of a thinner one of the conductive layers of the upper layer 26. In this way, electric signals can be transmitted more efficiently between the device and the motherboard than when the thickness of the thinner one of the conductive layers of the core distribution layer 24 is equal to or thicker than the width of the thinner one of the upper layer 26. I can.
- a thickness of a thinner one of the conductive layers of the core distribution layer 24 may be equal to or thicker than a thickness of a thinner one of the conductive layers of the upper layer 26 (Tus). In this way, electric signals can be transmitted more efficiently between the device and the motherboard than when the thickness of the thinner one of the conductive layers of the core distribution layer 24 is equal to or thicker than the thickness of the thinner one of the upper layer 26. have.
- the thickness of the electrically conductive layer at the minimum inner diameter of the core via 23 may be equal to or thicker than the width of the thinner electrically conductive layer of the upper layer 26. In this way, when the thickness of the electric conductive layer at the minimum inner diameter of the core via is equal to or thicker than the width of the thinner one of the electric conductive layers of the upper layer, electric signal transmission between the device and the motherboard may be more efficient.
- the thickness of the electrically conductive layer at the minimum inner diameter of the core via 23 may be equal to or thicker than the thickness of the thinner electrically conductive layer of the upper layer 26. In this way, when the thickness of the electric conductive layer at the minimum inner diameter of the core via is equal to or thicker than the thickness of the thinner one of the electric conductive layers of the upper layer, electric signals can be transmitted more efficiently between the device and the motherboard.
- the average thickness of the core distribution pattern 241 may be about 1 to about 20 times as thick as about 1 to about 20 times the width (Wus) of the thinner of the top connection patterns 272, and about 1 to about 15 times. It can have a thick thickness. In addition, the average thickness of the core distribution pattern 241 may be about 1 to about 10 times thicker based on the width (Wus) of the thinner top surface connection pattern 272, and about 1 to about 8 times thicker. Can have When the core distribution pattern 241 having such a ratio is applied to the packaging substrate, a process in which an electric signal from a highly integrated device is connected to the motherboard may be more efficient.
- the average thickness of the core distribution pattern 241 may be about 0.7 to about 12 times the thickness (Tus) of the thinner one of the top connection patterns 272, and may have a thicker thickness (Tcv), and about 1.0 to It may have a thickness (Tcv) that is about 10 times as thick.
- the core distribution pattern 241 may have a thickness Tcv of about 1.1 to about 8 times, based on the thickness (Tus) of the thinner of the top connection patterns 272, and a thickness of about 1.1 to about 6 times. (Tcv), and may have a thick thickness (Tcv) of about 1.1 to about 3 times. In the case of having the core distribution pattern 241 representing such a thickness ratio, a process in which an electrical signal from a highly integrated device is connected to the motherboard may be more efficient.
- the average thickness of the core via distribution pattern 241b which is a core distribution pattern positioned on the inner diameter surface of the core via, is about 1 to about 12 based on the width (Wus) of the thinner of the top connection patterns 272. It may be twice as thick, and may be about 1 to about 10 times as thick. In addition, the average thickness of the core via distribution pattern 241b may have a thickness of about 1 to about 8 times, based on the width (Wus) of the thinner of the top connection patterns 272, and may have a thickness of about 1 to about 6 times. It can have a thick thickness. When the core via distribution pattern 241b having such an average thickness ratio is applied to the packaging substrate, a process in which an electric signal from a highly integrated device is connected to the motherboard may be more efficient.
- the core distribution pattern 241 is a form in which an electrically conductive layer is formed with a constant thickness in the inner diameter of the core via as disclosed in the drawing, and the rest of the core via may be filled with an insulator layer. It may be filled with an electrically conductive layer without it.
- the width of the core via pattern is the distance from the one side of the core via pattern close to the inner diameter to the center of the electrically conductive layer (the same applies hereinafter).
- the thickness (Tcv) of the thinner of the core distribution pattern 241 may be about 0.8 to about 10 times the thickness (Wus) of the thinner of the top connection pattern 272, and about 0.8 To about 7 times thicker.
- the thickness (Tcv) of the thinner of the core distribution pattern 241 may have a thicker thickness (Tcv) of about 0.9 to about 6 times the width (Wus) of the thinner of the top connection patterns 272, and about It may have a thickness (Tcv) of 1 to about 4 times.
- the thicker of the second surface distribution patterns 241c may have a thicker wiring thickness (Tsc) of about 0.7 to about 20 times the thickness (Tus) of the thinner of the top connection patterns 272, and about It may have a wiring thickness Tsc of 0.7 to about 15 times.
- the second surface distribution pattern 241c may have a thickness Tsc of about 1 to about 12 times the thickness of the thinner of the top connection patterns 272, Tsc, and about 1.1 to about 5 It can have a double-thick wiring thickness Tsc.
- the width Wsc of the thicker of the second surface distribution patterns 241c may be about 1 to about 20 times thicker, based on the width Wus of the thinner of the top connection patterns 272, and may be about 1 to It can be about 15 times thicker.
- the width (Wsc) of the thicker of the second surface distribution patterns 241c may be about 2 to about 10 times thicker than the width (Wus) of the thinner of the upper surface connection patterns 272, and may be about 2 to about It can be eight times thicker.
- the width (Wds) of the thicker one of the lower surface connection patterns 292b may be about 1 to about 20 times thicker than the width (Wus) of the thinner one of the upper surface connection pattern 272, and about 1 to about It can be 15 times thicker.
- the width (Wds) of the thicker one of the lower surface connection patterns 292b may be about 2 to about 10 times thicker based on the width (Wus) of the thinner one of the upper surface connection patterns 272, and about 2 to about 8 It can be twice as thick.
- the width (not shown) of the thicker one of the lower surface connection electrodes 292a may be about 0.7 to about 30 times thicker than the width (Wus) of the thinner one of the upper surface connection patterns 272, and about 0.8 to It can be about 20 times thicker.
- the width (not shown) of the thicker one of the lower surface connection electrodes 292a may be about 1 to about 15 times thicker based on the width (Wus) of the thinner one of the upper surface connection patterns 272, and may be about 1 to about 10 times. It can be thick.
- At least a portion of the lower surface connection pattern 292b may have a thickness (Tds) of about 0.7 to about 30 times the thickness (Tus) of the thinner of the upper surface connection pattern 272, and about 1 to It may have a wide thickness (Tds) of about 25 times, and may have a wide thickness (Tds) of about 1.5 to about 20 times.
- Tds thickness of about 0.7 to about 30 times the thickness (Tus) of the thinner of the upper surface connection pattern 272, and about 1 to It may have a wide thickness (Tds) of about 25 times, and may have a wide thickness (Tds) of about 1.5 to about 20 times.
- the semiconductor device 100 has a packaging substrate 20 having a considerably thin thickness, so that the overall thickness of the semiconductor device can be reduced, and by applying a fine pattern, an intended electrical connection pattern can be arranged even in a narrower area.
- the packaging substrate may have a thickness of about 2000 ⁇ m or less, about 1500 ⁇ m or less, and about 900 ⁇ m.
- the packaging substrate may have a thickness of about 120 ⁇ m or more and about 150 ⁇ m or more.
- the packaging substrate as described above, electrically and structurally stably connects the device and the motherboard even with a relatively thin thickness, and may contribute to a smaller and thinner semiconductor device.
- the resistance value of the cut to a size of about 100 ⁇ m ⁇ 100 ⁇ m based on the top surface of the packaging substrate 20 may be about 2.6 ⁇ 10 -6 ⁇ or more, about 3.6 ⁇ 10 -6 ⁇ or more, and about 20.6 It may be more than ⁇ 10 -6 ⁇ .
- the resistance value of the packaging substrate may be about 27.5 ⁇ 10 -6 ⁇ or less, about 25.8 ⁇ 10 -6 ⁇ or less, and about 24.1 ⁇ 10 -6 ⁇ or less.
- the resistance value is a measurement of the resistance between the electrically conductive layer of the upper layer and the electroconductive layer of the lower layer of the cut to a predetermined size described above, and the electrical conductive layer and the lower layer of the upper layer are electrically conductive by a core via pattern.
- the low-conductivity layers are connected to each other and are measured resistance values.
- the resistance value can be measured by the method described in the experimental examples below.
- the packaging substrate that satisfies the resistance value can easily transmit an electrical signal to the outside.
- FIGS. 6 to 8 are flow charts illustrating a manufacturing process of a packaging substrate according to the embodiment in cross section.
- a method of manufacturing a packaging substrate according to another embodiment will be described with reference to FIGS. 6 to 8.
- the manufacturing method of the packaging substrate of the embodiment includes: a preparation step of forming defects at predetermined positions on a first surface and a second surface of the glass substrate; An etching step of preparing a glass substrate on which a core via is formed by applying an etching solution to the glass substrate on which the defects are formed; A core layer manufacturing step of forming a core layer by plating the surface of the glass substrate on which the core via is formed to form a core distribution layer, which is an electrically conductive layer; In addition, an upper layer manufacturing step of forming an upper distribution layer, which is an electrically conductive layer wrapped in an insulating layer, on one surface of the core layer, to manufacture the packaging substrate described above.
- the core layer manufacturing step includes a pretreatment process of forming a pretreated glass substrate by forming an organic-inorganic composite primer layer including nanoparticles having an amine group on the surface of the glass substrate on which the core via is formed; And a plating process of plating a metal layer on the pre-treated glass substrate.
- the core layer manufacturing step includes a pretreatment process of forming a pretreated glass substrate by forming a metal-containing primer layer through sputtering on the surface of the glass substrate on which the core via is formed; And a plating process of plating a metal layer on the pre-treated glass substrate.
- An insulating layer forming step may be further included between the core layer manufacturing step and the upper layer manufacturing step.
- the insulating layer forming step may be a step of forming a core insulating layer by placing an insulating film on the core layer and then performing pressure-sensitive lamination.
- the manufacturing method of the packaging substrate will be described in more detail.
- a glass substrate applied to a substrate of an electronic device may be applied.
- an alkali-free glass substrate may be applied, but is not limited thereto.
- products manufactured by manufacturers such as Corning, Short, and AGC can be applied.
- Methods such as mechanical etching and laser irradiation may be applied to the formation of the defects (grooves).
- Etching step core via formation step: The glass substrate 21a on which the defects (grooves, 21b) are formed, forms the core vias 23 through a physical or chemical etching process. During the etching process, the glass substrate forms a via in the defective portion, and at the same time, the surface of the glass substrate 21a may be etched at the same time. In order to prevent the etching of the glass surface, a masking film or the like may be applied, but the defective glass substrate itself can be etched in consideration of the hassle of applying and removing the masking film. The thickness of the glass substrate with the core via may be somewhat thinner than the thickness.
- Core layer manufacturing step An electrically conductive layer 21d is formed on a glass substrate.
- the electroconductive layer may be a metal layer including a copper metal, but is not limited thereto.
- the surface of the glass (including the surface of the glass substrate and the surface of the core via) and the surface of the copper metal have different properties, so the adhesion is poor.
- the adhesion between the glass surface and the metal was improved by two methods, a dry method and a wet method.
- the dry method is a method of applying sputtering, that is, a method of forming the seed layer 21c on the glass surface and the inner diameter of the core via by metal sputtering.
- sputtering that is, a method of forming the seed layer 21c on the glass surface and the inner diameter of the core via by metal sputtering.
- dissimilar metals such as titanium, chromium, and nickel may be sputtered together with copper, and in this case, it is believed that glass-metal adhesion is improved by an anchor effect in which the surface morphology of the glass and the metal particles interact. do.
- the wet method is a method of performing a primer treatment, and is a method of forming the primer layer 21c by pretreating with a compound having a functional group such as amine.
- a primer treatment may be performed with a compound or particle having an amine functional group after pretreatment with a silane coupling agent.
- the support substrate of the embodiment needs to be of high performance enough to form a fine pattern, and this must be maintained even after the primer treatment. Therefore, when such a primer contains nanoparticles, nanoparticles having an average diameter of 150 nm or less are preferably applied. For example, nanoparticles are preferably applied to particles having an amine group.
- the primer layer may be formed by applying an adhesion improving agent manufactured by MEC's CZ series, for example.
- the electroconductive layer may selectively form a metal layer with or without removing portions that do not require formation of the electroconductive layer.
- a portion requiring or unnecessary formation of an electroconductive layer may be selectively processed in a state activated or deactivated for metal plating, thereby performing a subsequent process.
- the activation or deactivation treatment may be applied to a light irradiation treatment such as a laser having a certain wavelength, or a chemical treatment.
- the metal layer may be formed using a copper plating method applied to semiconductor device manufacturing, but is not limited thereto.
- the thickness of the formed electrically conductive layer may be controlled by adjusting various variables such as the concentration of the plating solution, the plating time, and the type of additive to be applied.
- a part of the core distribution layer is unnecessary, it may be removed, and after the seed layer is partially removed or deactivated, metal plating is performed to form an electrically conductive layer in a predetermined pattern, and the etching layer 21e of the core distribution layer May be formed
- the core via may undergo an insulating layer forming step in which an empty space is filled with an insulating layer after forming the core distribution layer, which is the electrically conductive layer.
- the applied insulating layer may be manufactured in the form of a film, and may be applied, for example, by a method of laminating the insulating layer in the form of a film under reduced pressure. When the pressure-sensitive lamination is performed in this way, the insulating layer is sufficiently penetrated into the empty space inside the core via, thereby forming a core insulating layer without void formation.
- Upper layer manufacturing step This is a step of forming an upper distribution layer including an upper insulating layer and an upper distribution pattern on the core layer.
- the upper insulating layer may be performed by coating a resin composition forming the insulating layer 23a or stacking an insulating film, and simply stacking an insulating film is preferably applied. Lamination of the insulating film may be performed by laminating and curing the insulating film. In this case, if the pressure-sensitive lamination method is applied, the insulating resin may be sufficiently contained even in a layer in which an electrically conductive layer is not formed in the core via.
- the upper insulating layer is also in direct contact with the glass substrate in at least a portion thereof, and thus, a material having sufficient adhesion is applied. Specifically, it is preferable that the glass substrate and the upper insulating layer have a property that satisfies an adhesion test value of 4B or more according to ASTM D3359.
- the upper distribution pattern may be formed by repeating the process of forming the insulating layer 23a, forming the electrically conductive layer 23c in a predetermined pattern, and etching unnecessary portions to form the etching layer 23d of the electrically conductive layer.
- the blind via 23b may be formed in the insulating layer and then a plating process may be performed.
- the blind via may be formed by a dry etching method such as laser etching or plasma etching, and a wet etching method using a masking layer and an etching solution.
- the top connection pattern and the top connection electrode may be formed in a process similar to that of the formation of the top distribution layer. Specifically, formed by forming an etching layer 23f of an insulating layer on the insulating layer 23e, forming an electrically conductive layer 23g thereon again, and then forming an etching layer 23h of the electrically conductive layer. However, it may be applied as a method of selectively forming only an electrically conductive layer without applying an etching method.
- the cover layer may be formed such that an opening (not shown) is formed at a position corresponding to the top connection electrode to expose the top connection electrode, and can be directly connected to the device connection part or the terminal of the device.
- a lower surface connection layer and a cover layer In a manner similar to the above-described step of forming the upper connection layer and the cover layer, the lower partial rear layer and/or the lower surface connection layer, and optionally a cover layer (not shown) may be formed.
- Step 1 Glass Defect Formation Process: Prepare a glass substrate 21a having a flat first side and a second side, and form a defect (groove, 21b) on the glass surface at a predetermined position for forming a core via. I did. As the glass, borosilicate glass (Corning) was applied. Mechanical etching and laser irradiation methods were applied to the formation of the defect (groove).
- Etching step core via formation step: The glass substrate 21a on which the defects (grooves, 21b) are formed was formed with the core via 23 through a physical or chemical etching process.
- Core layer manufacturing step An electrically conductive layer 21d was formed on a glass substrate. A metal layer containing a copper metal was applied as the electroconductive layer. The adhesion between the surface of the glass substrate and the metal layer was improved by two methods, a dry method and a wet method.
- the dry method is a method of applying sputtering, that is, a method of forming the seed layer 21c on the glass surface and the inner diameter of the core via by metal sputtering.
- sputtering that is, a method of forming the seed layer 21c on the glass surface and the inner diameter of the core via by metal sputtering.
- the seed layer at least one of titanium, chromium, and nickel was sputtered with copper or the like.
- the wet method is a method of primer treatment, and is a method of forming the primer layer 21c by pre-treating with a compound having a functional group such as amine.
- a primer treatment was performed with a compound or particle having an amine functional group.
- nanoparticles having an average diameter of 150 nm or less were applied, and nanoparticles were applied to particles having an amine group.
- the primer layer was formed by applying a bonding strength improving agent manufactured by MEC's CZ series.
- a portion requiring or unnecessary formation of an electroconductive layer was selectively treated in an activated state or deactivated state for metal plating.
- the activation or inactivation treatment light irradiation treatment such as a laser of a certain wavelength, chemical treatment, and the like were applied.
- a copper plating method applied to semiconductor device manufacturing was applied.
- metal plating was performed to form an electroconductive layer in a predetermined pattern to form the etch layer 21e of the core distribution layer.
- Insulation layer forming step After forming the core distribution layer, which is the electrically conductive layer, an insulating layer forming step was performed to fill an empty space with an insulating layer. At this time, the applied insulating layer was applied in the form of a film, and applied by a method of vacuum lamination of the film-shaped insulating layer.
- Upper layer manufacturing step A step of forming an upper distribution layer including an upper insulating layer and an upper distribution pattern on the core layer was performed.
- the upper insulating layer was performed by laminating an insulating film, and was performed by laminating and curing the insulating film.
- the upper insulating layer was also in direct contact with the glass substrate in at least a portion thereof, and thus had sufficient adhesion.
- the glass substrate and the upper insulating layer were applied having a property that satisfies an adhesion test value of 4B or more according to ASTM D3359.
- the upper distribution pattern was formed by repeating the process of forming the insulating layer 23a, forming the electrically conductive layer 23c in a predetermined pattern, and etching unnecessary portions to form the etching layer 23d of the electrically conductive layer.
- a blind via 23b is formed in the insulating layer and then a plating process is performed.
- the blind vias were formed by a dry etching method such as laser etching and plasma etching, and a wet etching method using a masking layer and an etching solution.
- Step of forming the top connection layer and the cover layer After forming an etching layer 23f of the insulating layer on the insulating layer 23e, forming an electroconductive layer 23g thereon again, the etching layer 23h of the electroconductive layer ) Proceeded in a way to form.
- the cover layer is formed such that an opening (not shown) is formed at a position corresponding to the top connection electrode to expose the top connection electrode, and to be directly connected to the device connection part or the terminal of the device.
- the packaging substrate 20 manufactured by the above method is the packaging substrate 20 manufactured by the above method.
- a glass substrate 21 having a first surface and a second surface facing each other, a plurality of core vias 23 penetrating the glass substrate in the thickness direction, and located on the surface of the glass substrate or the core via, at least a part thereof
- the upper layer includes an upper distribution layer 25 and a top connection layer 27 positioned on the upper distribution layer,
- the upper distribution layer includes an upper insulating layer 253 positioned on the first surface; It has a predetermined pattern and includes an upper distribution pattern 251 embedded in the upper insulating layer as an electrically conductive layer to which the core distribution layer 24 and at least a portion thereof are electrically connected,
- the core via includes a first opening 233 in contact with the first surface; A second opening 234 in contact with the second surface; And a minimum inner diameter portion 235, which is a region having the narrowest inner diameter of the entire core via connecting the first opening and the second opening,
- the ratio of the thickness (Tcv) of the thinner one of the electrically conductive layers of the core distribution layer and the width (Wus) of the thinner one of the upper conductive layers is 1:1
- the ratio of the thickness (Tcv) of the thinner one of the electroconductive layers of the core distribution layer and the thickness (Tus) of the thinner one of the upper electroconductive layer is 0.7:1.
- the ratio of the thickness (Tcv) of the thinner one of the electroconductive layer of the core distribution layer and the width (Wus) of the thinner one of the upper electroconductive layer is 12:1
- a semiconductor device was prepared in the same manner as in Preparation Example 1, except that the ratio of the thickness (Tcv) of the thin one of the conductive layers of the core distribution layer and the thickness (Tus) of the thin one of the top layer of the conductive layer is 12:1. Was prepared.
- the ratio of the thickness (Tcv) of the thinner one of the electroconductive layer of the core distribution layer and the width (Wus) of the thinner one of the upper electroconductive layer is 12:1
- a semiconductor device was prepared in the same manner as in Preparation Example 1, except that the ratio of the thickness (Tcv) of the thin one of the electrical conductive layers of the core distribution layer and the thickness (Tus) of the thin one of the top layer of the electrical conductive layer is 13:1. Was prepared.
- top surfaces of the packaging substrates of Preparation Examples 1 to 4 were cut to a size of 100 ⁇ m ⁇ 100 ⁇ m, and the resistance value of the electrical properties was measured through a resistivity meter, and the thickness (Tcv, Tus) and width (Wus ) Conditions other than the conditions were the same, and the results are shown in Table 1.
- Tcv The thickness of the thinner one of the electrical conductive layers of the core distribution layer Wus: The width of the thinner one of the top conductive layers
- Tus the thickness of the thinner one of the top layers of electrically conductive layers
- the ratio of the thickness (Tcv) of the thin one among the electrical conductive layers of the core distribution layer and the width (Wus) of the thin one among the electrical conductive layers of the upper layer is 1:1 to 12:1
- Preparation Examples 1 and 2 in which the ratio of the thickness (Tcv) and the thickness (Tus) of the thin one of the upper layer of the electrical conductive layer is 0.7:1 to 12:1, has good resistance of 3.6 ⁇ 10 -6 ⁇ to 20.6 ⁇ 10 -6 ⁇ Values are shown. It is determined that the packaging substrate having such characteristics can sufficiently and smoothly transmit electrical signals to devices disposed above or below it.
- the packaging substrate of the embodiment does not form parasitic elements of the glass substrate, and has excellent properties such as that it can serve as a substrate support having a thin and sufficient strength, and is efficient by forming an electrically conductive layer with an appropriate width and thickness in the glass substrate. It utilizes its excellent properties, such as inducing signal transmission.
- the diameter of the core via formed on the glass substrate is too small, it may be difficult to sufficiently form an electric conductive layer therein, and the electrical signal transmission of the upper and lower portions of the packaging substrate may not be sufficiently smooth.
- the diameter of the core via is too large, it is unnecessary to fill the entire interior of the core via with an electrically conductive layer, or voids may be easily formed.
- voids may be easily formed.
- a core via having an excessively large diameter is formed at a high density, it may be difficult to maintain the mechanical properties of the glass substrate itself above a certain level.
- the ratio of the thickness (Tcv) of the thinner among the electroconductive layers of the core distribution layer and the width (Wus) of the thinner among the electroconductive layers of the upper layer is 1:1 to 12:1.
- the ratio of the thickness (Tcv) and the thickness (Tus) of the thinner among the electrical conductive layers of the upper layer is 0.7:1 to 12:1.
- semiconductor device part 32 first semiconductor device
- packaging substrate 22 core layer
- top connection layer 271 top connection electrode
- connection part 51 element connection part
- insulating layer 23b etching layer of the insulating layer
- electroconductive layer 23d etching layer of electroconductive layer
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Geometry (AREA)
Abstract
Description
제조예 1 | 제조예 2 | 제조예 3 | 제조예 4 | |
Tcv:Wus | 1:1 | 12:1 | 1:1 | 12:1 |
Tcv:Tus | 0.7:1 | 12:1 | 0.5:1 | 13:1 |
벌크 저항값(Ω) | 3.6×10 -6 | 20.6×10 -6 | 2.6×10 -6 | 22.4×10 -6 |
Claims (10)
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KR1020237024652A KR102652986B1 (ko) | 2019-03-07 | 2020-03-06 | 패키징 기판 및 이를 포함하는 반도체 장치 |
CN202210330465.8A CN114678339A (zh) | 2019-03-07 | 2020-03-06 | 封装基板以及半导体装置 |
KR1020217029739A KR102412292B1 (ko) | 2019-03-07 | 2020-03-06 | 패키징 기판 및 이를 포함하는 반도체 장치 |
EP20765640.6A EP3905315A4 (en) | 2019-03-07 | 2020-03-06 | PACKAGING SUBSTRATE AND SEMICONDUCTOR DEVICE EQUIPPED WITH THE SAME |
KR1020217012496A KR102564761B1 (ko) | 2019-03-07 | 2020-03-06 | 패키징 기판 및 이를 포함하는 반도체 장치 |
EP22169957.2A EP4057324A1 (en) | 2019-03-07 | 2020-03-06 | Packaging substrate and semiconductor apparatus comprising same |
CN202080007065.2A CN113261092A (zh) | 2019-03-07 | 2020-03-06 | 封装基板及包括其的半导体装置 |
JP2021534385A JP7293360B2 (ja) | 2019-03-07 | 2020-03-06 | パッケージング基板及びこれを含む半導体装置 |
US17/406,304 US20210384131A1 (en) | 2019-03-07 | 2021-08-19 | Packaging substrate and semiconductor apparatus comprising same |
JP2023094175A JP2023113866A (ja) | 2019-03-07 | 2023-06-07 | パッケージング基板及びこれを含む半導体装置 |
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US201962814945P | 2019-03-07 | 2019-03-07 | |
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US62/814,945 | 2019-03-07 |
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US17/406,304 Continuation US20210384131A1 (en) | 2019-03-07 | 2021-08-19 | Packaging substrate and semiconductor apparatus comprising same |
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EP (2) | EP3905315A4 (ko) |
JP (2) | JP7293360B2 (ko) |
KR (3) | KR102652986B1 (ko) |
CN (2) | CN114678339A (ko) |
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- 2020-03-06 CN CN202210330465.8A patent/CN114678339A/zh active Pending
- 2020-03-06 KR KR1020237024652A patent/KR102652986B1/ko active IP Right Grant
- 2020-03-06 KR KR1020217029739A patent/KR102412292B1/ko active IP Right Grant
- 2020-03-06 KR KR1020217012496A patent/KR102564761B1/ko active IP Right Grant
- 2020-03-06 EP EP22169957.2A patent/EP4057324A1/en active Pending
- 2020-03-06 JP JP2021534385A patent/JP7293360B2/ja active Active
- 2020-03-06 CN CN202080007065.2A patent/CN113261092A/zh active Pending
- 2020-03-06 WO PCT/KR2020/003167 patent/WO2020180145A1/ko unknown
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EP3905315A1 (en) | 2021-11-03 |
CN113261092A (zh) | 2021-08-13 |
EP3905315A4 (en) | 2022-10-19 |
CN114678339A (zh) | 2022-06-28 |
KR102412292B1 (ko) | 2022-06-22 |
KR20210056433A (ko) | 2021-05-18 |
KR20230117454A (ko) | 2023-08-08 |
US20210384131A1 (en) | 2021-12-09 |
KR20210119545A (ko) | 2021-10-05 |
JP7293360B2 (ja) | 2023-06-19 |
KR102564761B1 (ko) | 2023-08-07 |
KR102652986B1 (ko) | 2024-03-28 |
JP2022522590A (ja) | 2022-04-20 |
JP2023113866A (ja) | 2023-08-16 |
EP4057324A1 (en) | 2022-09-14 |
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