TWI833216B - Semiconductor device with decoupling unit - Google Patents

Abstract

The present application discloses a semiconductor device with a decoupling unit. The semiconductor device includes a first tier structure including conductive features of positioned over a substrate, and a decoupling unit the first tier structure positioned between the conductive features; a first-tier-alignment mark positioned on the decoupling unit, and including a fluorescence material; a second tier structure positioned on the first tier structure and including conductive features positioned over and deviated from the conductive features of the first tier structure, and a decoupling unit of positioned over the first tier structure, and positioned between the conductive features of the second tier structure; and a second-tier-alignment mark positioned on the decoupling unit of the second tier structure, and including a fluorescence material. The decoupling units include a low-k dielectric material and respectively include a bottle-shaped cross-sectional profile.

Description

Semiconductor component with decoupling unit

This application claims priority to U.S. Patent Application Nos. 17/685,511 and 17/685,865 (that is, the priority date is "March 3, 2022"), the contents of which are incorporated herein by reference in their entirety.

The present disclosure relates to a semiconductor device, and in particular to a semiconductor device having a decoupling unit.

Semiconductor components are used in various electronic applications such as personal computers, mobile phones, digital cameras and other electronic devices. The size of semiconductor devices continues to shrink to meet the growing demand for computing power. However, various problems arise during the downsizing process, and these problems continue to increase. Therefore, challenges remain in improving quality, yield, performance and reliability while reducing complexity.

The above description of "prior art" is only to provide background technology, and does not admit that the above description of "prior art" reveals the subject matter of the present disclosure. It does not constitute prior art of the present disclosure, and any description of the above "prior art" Neither should be regarded as any part of the "prior art" of this case and do not constitute prior art of this disclosure.

One aspect of the present disclosure provides a semiconductor device, including: a first layer junction The structure includes a plurality of conductive components of the first layer structure located above a substrate, and a decoupling unit of the first layer structure located between the conductive components of the first layer structure; a first group of dense pairs an alignment mark, including a first layer alignment mark located on the decoupling unit of the first layer structure, and including a fluorescent material; a second layer structure, located on the first layer structure, and including a first layer alignment mark located on the first layer structure A plurality of conductive components of the second layer structure above the conductive components of the first layer structure and deviating from the conductive components of the first layer structure, and the conductive components of the second layer structure located above the first layer structure and located at the second layer structure a decoupling unit of the second layer structure between conductive components; and a first set of spaced alignment marks, including a second layer alignment mark located on the decoupling unit of the second layer structure, and Including a fluorescent material, wherein the decoupling unit of the first layer structure and the second layer structure includes a low-k dielectric material and each includes a bottle-shaped cross-sectional profile.

Another aspect of the present disclosure provides a semiconductor device, including a first layer structure on a substrate, and the first layer structure includes: a plurality of conductive components of the first layer structure above the substrate, and a first layer structure on the substrate. a decoupling unit of the first layer structure between the conductive components of the layer structure, and which includes a bottle-shaped cross-sectional profile; a first set of dense alignment marks, including: the first layer structure located on the a first layer of alignment marks of the first set of dense alignment marks on the decoupling unit; a first set of spaced alignment marks, including: a first layer of alignment marks according to a first axis of symmetry and the first set of dense alignment marks A first layer of alignment marks of the first set of spaced alignment marks that are mirror images of each other, wherein the first level of alignment marks of the first set of dense alignment marks and the first set of spacers The first layer of the alignment mark includes a fluorescent material, and the decoupling unit of the first layer structure includes a low-k dielectric material.

Another aspect of the present disclosure provides a method for manufacturing a semiconductor device, including forming a first layer structure above a substrate, and the first layer structure includes: a plurality of conductive components above the substrate, and between the conductive components a decoupling unit between; in the first layer structure A first set of dense alignment marks including a first layer alignment mark is formed on the decoupling unit; a second layer structure is formed above the first layer structure, and includes: above the first layer structure A plurality of conductive components, and a decoupling unit between the conductive components; and forming a first group of spaced alignment marks including a second layer alignment mark on the decoupling unit of the second layer structure , wherein the first layer alignment mark and the second layer alignment mark include a fluorescent material, and the decoupling unit of the first layer structure and the second layer structure includes a low-k dielectric material.

Due to the design of the semiconductor device of the present disclosure, the first layer of alignment marks, the second layer of alignment marks, the third layer of alignment marks and the fourth layer of alignment marks including fluorescent materials can improve the optics in the wafer manufacturing process. Recognition. As a result, the yield of manufacturing semiconductor devices can be improved. In addition, the decoupling unit can reduce the parasitic capacitance of the complex conductive components.

The foregoing has provided a rather broad overview of the features and technical advantages of the present disclosure in order to provide a better understanding of the detailed description of the present disclosure that follows. Additional features and advantages that form the subject of the patent claims of the present disclosure will be described below. It should be understood by those of ordinary skill in the art that the concepts and specific embodiments disclosed below can be easily used to modify or design other structures or processes to achieve the same purposes as the present disclosure. Those with ordinary knowledge in the technical field to which the present disclosure belongs should also understand that such equivalent constructions cannot depart from the spirit and scope of the present disclosure as defined in the appended patent application scope.

1A: Semiconductor components

1B: Semiconductor components

1C: Semiconductor components

1D: Semiconductor components

10: Manufacturing method

100: First layer structure

101:Substrate

111: First dielectric layer

113: Second dielectric layer

115: Intermediate dielectric layer

117:Third dielectric layer

119:Fourth dielectric layer

121: Decoupling unit

121BS: Bottom surface

121SW: Side wall

121V:Tanibe

130: Conductive parts

131: Bottom barrier layer

131SW: Side wall

135: Intermediate conductive layer

135SW: Side wall

133:Top barrier layer

133SW: Side wall

137: Gap wall barrier

200:Second layer structure

211: First dielectric layer

213: Second dielectric layer

215: Intermediate dielectric layer

217:Third dielectric layer

219:Fourth dielectric layer

230: Conductive parts

221: Decoupling unit

300:Third layer structure

321: Decoupling unit

330: Conductive parts

400:Fourth layer structure

421: Decoupling unit

430: Conductive parts

501:First material

503: Second material

505:Third material

507:Fourth material

511: First mask layer

513: Second mask layer

515: The third mask layer

521:Open your mouth

523:Extended opening

525: Logo opening

600-1: The first set of dense alignment marks

600-2: The second set of dense alignment marks

610: First subset of dense alignment marks

611: First layer alignment mark

611SW: Side wall

611TS: Top surface

611BS: Bottom surface

613: Second layer alignment mark

615: Third layer alignment mark

617: Fourth layer alignment mark

620: Second subset of dense alignment marks

621: First layer alignment mark

623: Second layer alignment mark

625: Third layer alignment mark

627: Fourth layer alignment mark

630: The third subset of dense alignment marks

631: First layer alignment mark

633: Second layer alignment mark

635: Third layer alignment mark

637:Fourth layer alignment mark

641: First layer alignment mark

643: Second layer alignment mark

645: Third layer alignment mark

647: Fourth layer alignment mark

640: The fourth subset of dense alignment marks

700-1: The first set of interval alignment marks

700-2: The second set of interval alignment marks

710: First subset interval alignment marks

711: First layer alignment mark

713: Second layer alignment mark

715:Third layer alignment mark

717: Fourth layer alignment mark

720: Second subset interval alignment mark

721: First layer alignment mark

723: Second layer alignment mark

725:Third layer alignment mark

727: Fourth layer alignment mark

730: Third subset interval alignment mark

731: First layer alignment mark

733: Second layer alignment mark

735:Third layer alignment mark

737: Fourth layer alignment mark

740: Fourth subset interval alignment mark

741: First layer alignment mark

743: Second layer alignment mark

745:Third layer alignment mark

747: Fourth layer alignment mark

D1: distance

D2: distance

D3: distance

G1: distance

L1:Length

L2: length

L3: length

S1: first axis of symmetry

S2: Second axis of symmetry

S3: Third axis of symmetry

S11: Steps

S13: Steps

S15: Steps

S17: Steps

T1:Thickness

T2:Thickness

T3:Thickness

T4:Thickness

T5:Thickness

T6:Thickness

T7:Thickness

W1: Width

W2: Width

W3: Width

W4: Width

W5: Width

W6: Width

W7: Width

Embodiments of the present disclosure can be best understood from the following detailed description in conjunction with the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not necessarily drawn to scale. In fact, the dimensions of the various features may be arbitrarily expanded or reduced for clarity of discussion.

FIG. 1 illustrates a method for manufacturing a semiconductor device according to an embodiment of the present disclosure in the form of a flow chart.

2 to 11 illustrate a part of the manufacturing process of a semiconductor device according to an embodiment of the present disclosure using cross-sectional schematic diagrams.

FIG. 12 illustrates a schematic plan view of a semiconductor device in an intermediate stage according to an embodiment of the present disclosure.

13 is a schematic cross-sectional view along line A-A’ in FIG. 12 , illustrating a part of the manufacturing process of a semiconductor device according to an embodiment of the present disclosure.

FIG. 14 illustrates a schematic plan view of a semiconductor device in an intermediate stage according to an embodiment of the present disclosure.

FIG. 15 is a schematic cross-sectional view along line A-A’ in FIG. 14 , illustrating a part of the manufacturing process of a semiconductor device according to an embodiment of the present disclosure.

FIG. 16 illustrates a schematic plan view of a semiconductor device in an intermediate stage according to an embodiment of the present disclosure.

FIG. 17 is a schematic cross-sectional view along line A-A’ in FIG. 16 , illustrating a part of the manufacturing process of a semiconductor device according to an embodiment of the present disclosure.

FIG. 18 illustrates a schematic plan view of a semiconductor device according to another embodiment of the present disclosure.

Fig. 19 is a schematic cross-sectional view along the cross-section lines A-A' and B-B' in Fig. 18.

FIG. 20 is a schematic plan view illustrating a semiconductor device according to another embodiment of the present disclosure.

Fig. 21 is a schematic cross-sectional view along the cross-section lines A-A' and B-B' in Fig. 20.

FIG. 22 illustrates a schematic plan view of a semiconductor device according to another embodiment of the present disclosure.

Fig. 23 is a schematic cross-sectional view along the cross-section lines A-A' and B-B' in Fig. 22.

Fig. 24 is a schematic cross-sectional view along the cross-section lines C-C' and D-D' in Fig. 22.

The following disclosure provides many different embodiments, or examples, for implementing different features of the provided subject matter. Specific examples of components and arrangements are described below to simplify the present disclosure, and these are, of course, examples only and are not intended to be limiting. For example, in the following description, forming a first feature over or on a second feature may include the first feature and the second feature being formed in direct contact. Such embodiments may also include embodiments in which additional features are formed between the first feature and the second feature such that the first feature and the second feature may not be in direct contact. In addition, repeated reference symbols and/or words may be used in various examples of the present disclosure. The purpose of repetition is for simplicity and clarity of explanation, but is not intended to limit the relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms such as "under", "below", "under", "above", "on", etc. are used to conveniently describe a component or feature Relative relationship to other components or features in the drawing. These spatially relative terms are intended to cover different orientations of the component in use or operation in addition to the orientation depicted in the drawings. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It will be understood that when a component or layer is referred to as being "connected" or "coupled" to another component or layer, it can be directly connected or coupled to the other component or layer, or intervening components or layers may be present. layer.

It will be understood that, although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. Unless otherwise stated, these terms are only used to distinguish one component from another component. Thus, for example, a first element, component or section discussed below could be termed a second element, component or section without departing from the teachings of the present disclosure.

Unless otherwise indicated herein, terms such as "same," "identical," "planar" or "coplanar" when referring to orientation, arrangement, location, shape, size, quantity or other measure are not used herein. does not necessarily represent the exact same orientation, layout, location, shape, size, quantity or other measurement, but is intended to cover substantially the same orientation, layout, location, shape within an acceptable range of variations that may occur, for example, due to the manufacturing process ,ruler size, quantity or other measure. This article may use the term "substantially" to reflect this meaning. For example, items described as "substantially the same," "substantially identical," or "substantially planar" may be exactly the same, identical, or planar, or may be subject to changes that may occur, such as due to manufacturing processes. Accepts same, equal or flat within range.

In this disclosure, semiconductor components generally refer to components that can function by utilizing semiconductor characteristics, and electro-optical components, light-emitting display components, semiconductor circuits and electronic components are all included in the category of semiconductor components.

It should be noted that in the description of the present disclosure, above or up corresponds to the arrow direction of the direction Z, and below or down corresponds to the arrow direction opposite to the direction Z.

FIG. 1 illustrates a manufacturing method 10 of a semiconductor device 1A according to an embodiment of the present disclosure in the form of a flow chart. 2 to 11 illustrate a part of the manufacturing process of the semiconductor device 1A according to an embodiment of the present disclosure using cross-sectional schematic diagrams. FIG. 12 illustrates a schematic plan view of a semiconductor device 1A in an intermediate stage according to an embodiment of the present disclosure. FIG. 13 is a schematic cross-sectional view along the sectional line A-A’ in FIG. 12 , illustrating a part of the manufacturing process of the semiconductor device 1A according to an embodiment of the present disclosure.

Referring to Figures 1 to 5, in step S11, a substrate 101 can be provided, a first dielectric layer 111 can be formed on the substrate 101, a second dielectric layer 113 can be formed on the first dielectric layer 111, and A plurality of conductive components 130 may be formed on the second dielectric layer 113 .

Referring to FIG. 2 , the substrate 101 may include a semiconductor bulk substrate composed entirely of at least one semiconductor material, a plurality of component components (not shown for the sake of clarity), and a plurality of dielectric layers (not shown for the sake of clarity). and a plurality of conductive components (not shown for clarity). For example, the semiconductor bulk substrate can be made of elemental semiconductors (such as silicon or germanium), compound semiconductors (such as silicon germanium, silicon carbide, gallium arsenide, gallium phosphide, indium phosphide, indium arsenide, antimonide Indium, or other III-V compound semiconductors or II-VI compound semiconductors) or combinations thereof.

In some embodiments, the substrate 101 may include a semiconductor-on-insulator structure consisting from bottom to top of a handle substrate, an insulating layer, and a topmost semiconductor material layer. The operating substrate and the topmost semiconductor material layer may be formed of the same material as the aforementioned semiconductor bulk substrate. The insulating layer may be a crystalline or amorphous dielectric material, such as an oxide and/or nitride. For example, the insulating layer may be a dielectric oxide, such as silicon oxide. As another example, the insulating layer may be a dielectric nitride, such as silicon nitride or boron nitride. As another example, the insulating layer may comprise a stack of dielectric oxide and dielectric nitride, such as a stack of silicon oxide and silicon nitride or boron nitride stacked in any order. The insulating layer may have a thickness of between approximately 10 nm and 200 nm.

Referring to Figure 2, the device features may be formed on a semiconductor bulk substrate or a topmost layer of semiconductor material. Portions of these component features may be formed within the semiconductor bulk substrate or the topmost semiconductor material layer. The device components may be transistors, such as complementary metal oxide semiconductor transistors, metal oxide semiconductor field effect transistors, fin field effect transistors, similar transistors, or combinations thereof.

Referring to FIG. 2 , the dielectric layers may be formed on the semiconductor bulk substrate or the topmost semiconductor material layer and cover the device components. In some embodiments, the dielectric layers may be made of, for example, silicon oxide, borophosphosilicate glass, undoped silicate glass, fluorosilicate glass, low-k dielectric materials, similar materials, or formed by its combination. Low-k dielectric materials may have a dielectric constant less than 3.0 or even less than 2.5. In some embodiments, low-k dielectric materials may have a dielectric constant less than 2.0. The multilayer dielectric layer may be formed by a deposition process, such as a chemical vapor deposition process, a plasma enhanced chemical vapor deposition process, or a similar deposition process. A planarization process can be performed after the deposition process to remove excess material and provide a rough surface for subsequent process steps. on a flat surface.

Referring to FIG. 2 , the conductive components may include multiple interconnect layers and multiple conductive vias. The interconnect layers may be separated from each other and may be disposed horizontally along the direction Z within the dielectric layers. The conductive vias can connect adjacent interconnect layers along the direction Z and adjacent component components and interconnect layers. In some embodiments, conductive vias may improve heat dissipation and may provide structural support. In some embodiments, the conductive components may be made of, for example, tungsten, cobalt, zirconium, tantalum, titanium, aluminum, ruthenium, copper, metal carbides (eg, tantalum carbide, titanium carbide, tantalum magnesium carbide), metal nitrides (eg, Titanium nitride), transition metal aluminides, or combinations thereof. The conductive features may be formed during formation of the dielectric layers.

In some embodiments, the component components and the conductive components may together constitute multiple functional units within the substrate 101 . In the description of this disclosure, a functional unit generally refers to a circuit related to a function, which is divided into different units based on functional purposes. In some embodiments, functional units may typically be highly complex circuits, such as processor cores, memory controllers, or accelerator units. In some other embodiments, the complexity and functionality of a functional unit may be more complex or simpler.

Referring to FIG. 2 , in some embodiments, the first dielectric layer 111 may be made of, for example, fluorosilicate glass, borophosphosilicate glass, a spin-coated low-k dielectric layer, a chemical vapor-deposited low-k dielectric layer, or formed by its combination. In some embodiments, first dielectric layer 111 may include a self-planarizing material, such as spin-on glass or spin-on low-k dielectric material (eg, SiLK ^™ ). Using self-planarizing dielectric materials eliminates the need for subsequent planarization steps. In some embodiments, the first dielectric layer 111 may be formed by a deposition process, including, for example, chemical vapor deposition, plasma enhanced chemical vapor deposition, evaporation, or spin coating.

Referring to FIG. 2 , in some embodiments, the second dielectric layer 113 may be, for example, a nitride Silicon, silicon oxynitride, silicon oxynitride, similar materials, or combinations thereof. The second dielectric layer 113 may be formed by, for example, chemical vapor deposition, plasma enhanced chemical vapor deposition, or other suitable deposition processes. In some embodiments, the second dielectric layer 113 may serve as a barrier layer to prevent moisture from entering underlying layers (eg, the first dielectric layer 111 and the substrate 101 ). In some embodiments, the thickness T1 of the first dielectric layer 111 is greater than the thickness T2 of the second dielectric layer 113 .

Referring to FIG. 2 , a layer of first material 501 may be formed on the second dielectric layer 113 . The first material 501 may be, for example, titanium, titanium nitride, tantalum, tantalum nitride, or similar materials. This layer of first material 501 may be formed by, for example, chemical vapor deposition, physical vapor deposition, sputtering, or similar methods. A layer of second material 503 may be formed on the layer of first material 501 . This layer of second material 503 may be, for example, copper, copper alloy, silver, gold, tungsten, aluminum, nickel, or similar materials. This layer of second material 503 may be formed by, for example, physical vapor deposition, sputtering, or similar methods. A layer of third material 505 may be formed on the layer of second material 503 . In some embodiments, the third material 505 and the first material 501 may include the same material. In some embodiments, the third material 505 may be, for example, titanium, titanium nitride, tantalum, tantalum nitride, or similar materials. This layer of third material 505 may be formed by, for example, chemical vapor deposition, physical vapor deposition, sputtering, or similar methods.

Referring to FIG. 2 , a first mask layer 511 may be formed on the layer of third material 505 . The first mask layer 511 may be a photoresist layer and may include patterns of the conductive components 130 .

Referring to FIG. 3 , an etching process (such as an anisotropic dry etching process) may be performed to remove portions of the first material 501 , the second material 503 and the third material 505 . After the etching process, the remaining first material 501 can serve as a plurality of bottom barrier layers 131 , the remaining second material 503 can serve as a plurality of intermediate conductive layers 135 , and the remaining third material 505 can serve as a plurality of top barriers. Layer 133. In some embodiments, the etching process may be a multi-stage etching process and may be anisotropic.

For simplicity, clarity and ease of explanation, only one bottom barrier layer 131, one middle conductive layer 135 and one top barrier layer 133 are described. In some embodiments, the thickness T3 of the bottom barrier layer 131 may be approximately the same as the thickness T4 of the top barrier layer 133 . In some embodiments, the thickness T3 of the bottom barrier layer 131 may be greater than the thickness T4 of the top barrier layer 133 . In some embodiments, the thickness T5 of the middle conductive layer 135 may be greater than the thickness T3 of the bottom barrier layer 131 or the thickness T4 of the top barrier layer 133 .

Referring to FIG. 4 , a layer of fourth material 507 may be compliantly formed over the semiconductor device in the intermediate stage shown in FIG. 3 . The fourth material 507 may be, for example, titanium, titanium nitride, tantalum, tantalum nitride, or similar materials. This layer of fourth material 507 may be formed by, for example, atomic layer deposition, chemical vapor deposition, physical vapor deposition, sputtering, or similar methods. In some embodiments, the fourth material 507 and the top barrier layer 133 may include the same material.

Referring to FIG. 5 , an etching process (such as an anisotropic dry etching process) may be performed to remove portions of the fourth material 507 . After the etching process, the remaining fourth material 507 can serve as spacer barriers 137 . The spacer barriers 137 may be formed to cover the sidewalls 133SW of the top barrier layer 133 , the sidewalls 135SW of the middle conductive layer 135 , and the sidewalls 131SW of the bottom barrier layer 131 .

The spacer barriers 137 , the top barrier layers 133 , the middle conductive layers 135 and the bottom barrier layers 131 together constitute the conductive components 130 .

Referring to FIGS. 1 and 6 to 9 , in step S13 , an intermediate dielectric layer 115 may be formed on the second dielectric layer 113 and surrounds the conductive components 130 , and a decoupling unit 121 may be formed on the intermediate dielectric layer 113 . Within layer 115.

Referring to FIG. 6 , an intermediate dielectric layer 115 may be formed on the second dielectric layer 113 and cover the conductive components 130 . A planarization process, such as chemical mechanical polishing, can be performed until the The top surface of conductive component 130 is exposed to remove excess material and provide a generally flat surface for subsequent processing steps. In some embodiments, the middle dielectric layer 115 may be formed of a material with a different etch rate than the second dielectric layer 113 . In some embodiments, the intermediate dielectric layer 115 may be formed of, for example, silicon oxide, silicon nitride, silicon oxynitride, silicon oxynitride, fluorosilicate glass, borophosphosilicate glass, or combinations thereof. In some embodiments, the intermediate dielectric layer 115 may be formed by, for example, chemical vapor deposition, plasma enhanced chemical vapor deposition, or other suitable deposition processes.

It should be noted that in the description of the present disclosure, a surface of the component (or component) located at the highest vertical height along the direction Z is called a top surface of the component (or component). A surface of a component (or component) located at the lowest vertical height along direction Z is called a bottom surface of the component (or component).

Referring to FIG. 6 , a second mask layer 513 may be formed on the intermediate dielectric layer 115 . In some embodiments, the intermediate dielectric layer 115 may be a photoresist layer and may include a pattern of decoupling units 121 .

Referring to FIG. 7 , an anisotropic etching process may be performed to remove some portions of the intermediate dielectric layer 115 and simultaneously form an opening 521 . In some embodiments, the anisotropic etching process may be an anisotropic dry etching process. In some embodiments, during the anisotropic etching process, the etch rate ratio of the middle dielectric layer 115 to the second dielectric layer 113 may be between about 100:1 and about 1.05:1, between about 15:1 and Between about 2:1, or between about 10:1 and about 2:1.

Referring to FIG. 8 , an expansion etching process may be performed to expand the opening 521 into an expansion opening 523 . In some embodiments, the extended etching process may be an anisotropic etching process. In some embodiments, the extended etching process may be a wet etching process. In some embodiments, during the extended etching process, the etch rate ratio of the intermediate dielectric layer 115 to the second dielectric layer 113 may be between approximately Between 100:1 and about 1.05:1, between about 15:1 and about 2:1, or between about 10:1 and about 2:1. In some embodiments, the sidewalls of the expansion opening 523 may be curved.

Referring to FIG. 9 , the second mask layer 513 can be removed, and an insulating material can be deposited to completely fill the expansion opening 523 , and then a planarization process, such as chemical mechanical polishing, can be performed until the top surfaces of the conductive components 130 are exposed. Excess material is removed to provide a substantially flat surface for subsequent process steps, and at the same time, the decoupling unit 121 is formed. In some embodiments, decoupling unit 121 may have a bottle-shaped cross-sectional profile. In some embodiments, the insulating material forming decoupling unit 121 may be, for example, a porous low-k material.

In some embodiments, the insulating material forming the decoupling unit 121 may be an energy removal material. Energy removal materials may include materials such as thermal decomposition materials, photon decomposition materials, electron beam decomposition materials, or combinations thereof. For example, the energy removal material may include a base material and a decomposable porogen material that is removed as a sacrificial material upon exposure to the energy source. The base material may include methyl sesquioxane-based material. The decomposable porogen material may comprise a porogen organic compound that provides porosity to the base material of the energy removal material. Energy processing can be performed by applying an energy source after the planarization process. The energy source may include heat, light, or a combination thereof. When using heat as the energy source, the temperature of the energy treatment may be between about 800°C and about 900°C. When using light as the energy source, ultraviolet light can be used. Energy treatment can remove the decomposable porogen material from the energy removal material to create empty spaces (pores) while the base material remains in place. The empty space (hole) can reduce the dielectric constant of the decoupling unit 121 .

Referring to FIG. 9 , the decoupling unit 121 may be formed between the conductive components 130 . In some embodiments, the decoupling unit 121 with a low dielectric constant may implement the decoupling function. In some embodiments, the decoupling unit 121 can reduce the parasitic current of the conductive components 130. Allow.

1 and 10 to 13, in step S15, a third dielectric layer 117 may be formed on the intermediate dielectric layer 115, and a fourth dielectric layer 119 may be formed on the third dielectric layer 117. A first layer structure 100 is formed, and a first layer alignment mark 611 and a first layer alignment mark 711 can be formed in the first layer structure 100 .

Referring to FIG. 10 , in some embodiments, the third dielectric layer 117 may be made of, for example, fluorosilicate glass, borophosphosilicate glass, a spin-on low-k dielectric layer, a chemical vapor-deposited low-k dielectric layer, or formed by its combination. In some embodiments, third dielectric layer 117 may include a self-planarizing material, such as spin-on glass or spin-on low-k dielectric material (eg, SiLK ^™ ). Using self-planarizing dielectric materials eliminates the need for subsequent planarization steps. In some embodiments, the third dielectric layer 117 may be formed by a deposition process, including, for example, chemical vapor deposition, plasma enhanced chemical vapor deposition, evaporation, or spin coating. In some embodiments, the third dielectric layer 117 and the first dielectric layer 111 may be formed of the same material.

Referring to FIG. 10 , in some embodiments, the fourth dielectric layer 119 may be, for example, silicon nitride, silicon oxynitride, silicon oxynitride, similar materials, or combinations thereof. The fourth dielectric layer 119 may be formed by, for example, chemical vapor deposition, plasma enhanced chemical vapor deposition, or other suitable deposition processes. In some embodiments, the fourth dielectric layer 119 may serve as a barrier layer to prevent moisture from entering underlying layers (eg, the third dielectric layer 117 and the intermediate dielectric layer 115 ). In some embodiments, the thickness T6 of the third dielectric layer 117 is greater than the thickness T7 of the fourth dielectric layer 119 .

Referring to FIG. 10 , the first dielectric layer 111 , the second dielectric layer 113 , the intermediate dielectric layer 115 , the third dielectric layer 117 and the fourth dielectric layer 119 , the decoupling unit 121 and the conductive components 130 can be used together. The first layer structure 100 is formed.

Referring to FIG. 10 , a third mask layer 515 may be formed on the first layer structure 100 . The third mask layer 515 may be a photoresist layer and may include patterns of the first layer alignment marks 611 and the first layer alignment marks 711 .

Since the first layer alignment mark 611 and the first layer alignment mark 711 are formed at the same time, for the sake of simplicity and clarity, only the formation of the first layer alignment mark 611 is described.

Referring to FIG. 11 , an etching process, such as an anisotropic dry etching process, may be performed to remove some parts of the fourth dielectric layer 119 , some parts of the third dielectric layer 117 and some parts of the decoupling unit 121 to form a mark. Opening 525. In some embodiments, the sidewalls of the logo opening 525 may be tapered. It should be noted that the mark opening 525 is used to form the first layer alignment mark 611, and for the sake of simplicity and clarity, the mark opening used to form the first layer alignment mark 711 is not shown in FIG. 11 .

Referring to Figures 12 and 13, an insulating layer may be formed to completely fill the logo opening 525. The insulating layer may contain fluorescent materials. In some embodiments, the fluorescent material can be azobenzene. In some embodiments, the insulating layer may be formed by, for example, chemical vapor deposition. A planarization process, such as chemical mechanical polishing, may be performed until the fourth dielectric layer 119 is exposed to remove excess material and provide a substantially flat surface for subsequent process steps, while turning the insulating layer into a first layer alignment mark 611 (and first layer alignment mark 711). Since the outline of the first layer alignment mark 611 is determined by the mark opening 525, the side wall 611SW of the first layer alignment mark 611 may be tapered.

In some embodiments, the width W1 between the two valleys 121V of the side wall 121SW of the decoupling unit 121 may be greater than the width W2 of the top surface 611TS of the first layer alignment mark 611 . In some embodiments, the width W2 of the top surface 611TS of the first alignment mark 611 may be greater than the width W3 of the first alignment mark 611 at the interface between the middle dielectric layer 115 and the third dielectric layer 117 . In some embodiments, the first layer alignment mark 611 is between the intermediate dielectric layer 115 and the third dielectric layer. The width W3 at the interface between the electrical layers 117 may be greater than the width W4 of the bottom surface 611BS of the first layer alignment mark 611 . In some embodiments, the width W3 of the first layer alignment mark 611 at the interface between the middle dielectric layer 115 and the third dielectric layer 117 may be greater than the width W5 of the bottom surface 121BS of the decoupling unit 121 . In some embodiments, the width ratio between width W1 and width W5 may be between about 1.5:1 and about 1.1:1 or between about 1.3:1 and about 1.1:1.

The first layer alignment marks 611 (and the first layer alignment marks 711 ) including fluorescent materials can improve optical visibility during subsequent wafer manufacturing processes.

Referring to FIGS. 12 and 13 , in some embodiments, the first layer alignment mark 611 and the first layer alignment mark 711 may be far away from each other. In some embodiments, the first layer alignment mark 611 and the first layer alignment mark 711 may be formed in a mirror image according to the first symmetry axis S1 in a plan view.

FIG. 14 illustrates a schematic plan view of a semiconductor device 1A in an intermediate stage according to an embodiment of the present disclosure. FIG. 15 is a schematic cross-sectional view along line A-A’ in FIG. 14 , illustrating a part of the manufacturing process of the semiconductor device 1A according to an embodiment of the present disclosure. FIG. 16 illustrates a schematic plan view of a semiconductor device 1A in an intermediate stage according to an embodiment of the present disclosure. FIG. 17 is a schematic cross-sectional view along line A-A’ in FIG. 16 , illustrating a part of the manufacturing process of the semiconductor device 1A according to an embodiment of the present disclosure. It should be noted that some components have been omitted from Figures 20 and 21 for the sake of clarity.

Referring to Figure 1 and Figures 14 to 17, in step S17, a second layer structure 200, second layer alignment marks 613, 713, a third layer structure 300, and a third layer structure can be formed above the first layer structure 100. Alignment marks 615, 715, a fourth layer structure 400 and fourth layer alignment marks 617, 717.

Referring to FIGS. 14 and 15 , the second layer structure 200 may be formed on the first layer structure 100 . The second layer structure 200 may include a first dielectric layer 211, a second dielectric layer 213, an intermediate Dielectric layer 215, a third dielectric layer 217, a fourth dielectric layer 219, a plurality of conductive components 230 and a decoupling unit 221. The aforementioned components of the second layer structure 200 can be formed using steps similar to those of the first layer structure 100, which will not be described again here. In some embodiments, the conductive components 230 may be offset from the conductive components 130 . The decoupling unit 221 may be formed between the conductive components 230 . The second layer alignment mark 613 can be formed on the decoupling unit 221 using steps similar to the first layer alignment mark 611, which will not be described again here.

Referring to FIGS. 16 and 17 , the third layer structure 300 may be formed on the second layer structure 200 . The third layer alignment marks 615 and 715 may be respectively formed on the decoupling unit 321 of the third layer structure 300. The fourth layer structure 400 may be formed on the third layer structure 300 . The fourth layer alignment marks 617 and 717 may be respectively formed on the decoupling unit 421 of the fourth layer structure 400. The aforementioned components can be formed using steps similar to the second layer structure 200 and the decoupling unit 221 respectively, which will not be described again here.

The first layer alignment marks 611 , the second layer alignment marks 613 , the third layer alignment marks 615 and the fourth layer alignment marks 617 may be referred to as the first subset of dense alignment marks 610 . The first layer alignment mark 711 , the second layer alignment mark 713 , the third layer alignment mark 715 and the fourth layer alignment mark 717 may be referred to as the first subset of spaced alignment marks 710 .

In some embodiments, the first layer alignment mark 611 may be linear in plan view. The first layer alignment mark 611 may extend along the direction Y.

In a cross-sectional view, the second layer alignment mark 613 may be located within the second layer structure 200 and may be offset from the first layer alignment mark 611 . In other words, the second layer alignment mark 613 may not be directly located directly above the first layer alignment mark 611 . In plan view, the second layer alignment mark 613 may be linear. The second layer alignment mark 613 may extend along the direction Y and may be spaced apart from the first layer alignment mark 611 in the direction X.

In a cross-sectional view, the third layer alignment mark 615 may be located within the third layer structure 300 and may be offset from the second layer alignment mark 613 . In other words, the third layer alignment mark 615 may not be directly located directly above the second layer alignment mark 613 . In plan view, the third layer alignment mark 615 may be linear. The third layer alignment mark 615 may extend along the direction Y and may be separated from the second layer alignment mark 613 in the direction between quasi-marks 615.

In a cross-sectional view, the fourth layer alignment mark 617 may be located within the fourth layer structure 400 and may be offset from the third layer alignment mark 615 . In other words, the fourth layer alignment mark 617 may not be directly above the third layer alignment mark 615 . In plan view, the fourth layer alignment mark 617 may be linear. The fourth layer alignment mark 617 may extend along the direction Y and may be separated from the third layer alignment mark 615 in the direction X. The third layer alignment mark 615 may be disposed between the second layer alignment mark 613 and the fourth layer between alignment marks 617.

In some embodiments, the first layer alignment mark 611 , the second layer alignment mark 613 , the third layer alignment mark 615 and the fourth layer alignment mark 617 may be aligned with each other in the direction Y. In some embodiments, the first layer alignment mark 611 , the second layer alignment mark 613 , the third layer alignment mark 615 and the fourth layer alignment mark 617 may not be aligned with each other in the direction Y.

In some embodiments, the length L1 of the first layer alignment mark 611 may be different from the width W2 of the first layer alignment mark 611 in a plan view. For example, the length L1 of the first layer alignment mark 611 may be greater than the width W2 of the first layer alignment mark 611 . In some embodiments, the length L1 of the first layer alignment mark 611 may be substantially the same as the width W2 of the first layer alignment mark 611 .

In some embodiments, the lengths of the second layer alignment marks 613 , the third layer alignment marks 615 , and the fourth layer alignment marks 617 may be substantially the same as the length L1 of the first layer alignment marks 611 . In some embodiments, the second layer alignment mark 613, the third layer alignment mark 615, the third layer alignment mark 615, and the third layer alignment mark 615. The length of the four-layer alignment mark 617 may be different from the length L1 of the first-layer alignment mark 611 . For example, the length L2 of the second layer alignment mark 613 may be the same as or different from the length L1 of the first layer alignment mark 611 .

In some embodiments, the widths of the second layer alignment marks 613 , the third layer alignment marks 615 , and the fourth layer alignment marks 617 may be substantially the same as the width W2 of the first layer alignment marks 611 . In some embodiments, the widths of the second layer alignment marks 613 , the third layer alignment marks 615 , and the fourth layer alignment marks 617 may be different from the width W2 of the first layer alignment marks 611 . For example, the width W6 of the second layer alignment mark 613 may be the same as or different from the width W2 of the first layer alignment mark 611 .

In some embodiments, the width W2 of the first layer alignment mark 611 may be different from the distance D1 between the first layer alignment mark 611 and the second layer alignment mark 613 in a plan view. For example, the width W2 of the first layer alignment mark 611 may be greater than the distance D1 between the first layer alignment mark 611 and the second layer alignment mark 613 . In some embodiments, the width W2 of the first layer alignment mark 611 may be substantially the same as the distance D1 between the first layer alignment mark 611 and the second layer alignment mark 613 .

In some embodiments, in a plan view, the distances D1, D2, D3 can be substantially the same. In some embodiments, in a plan view, the distances D1, D2, D3 is different. For example, the distance D1 between the first layer alignment mark 611 and the second layer alignment mark 613 may be greater or smaller than the distance D2 between the second layer alignment mark 613 and the third layer alignment mark 615 .

The first layer alignment mark 611, the second layer alignment mark 613, the third layer alignment mark The mark 615 and the fourth layer alignment mark 617 may include a fluorescent material. In some embodiments, the fluorescent material can be azobenzene. The first layer of alignment marks 611 , the second layer of alignment marks 613 , the third layer of alignment marks 615 and the fourth layer of alignment marks 617 including fluorescent materials can improve optical visibility during the wafer manufacturing process.

Referring to FIGS. 16 and 17 , the first subset of spacing alignment marks 710 and the first subset of dense alignment marks 610 may be formed in a mirror image according to the first symmetry axis S1 . Specifically, the first layer alignment mark 711 and the first layer alignment mark 611 may be formed in a mirror image according to the first symmetry axis S1. The second layer alignment mark 713 and the second layer alignment mark 613 may be formed in a mirror image according to the first symmetry axis S1. The third layer alignment mark 715 and the third layer alignment mark 615 may be formed in a mirror image according to the first symmetry axis S1. The fourth layer alignment mark 717 and the fourth layer alignment mark 617 may be arranged in a mirror image according to the first symmetry axis S1.

The first layer alignment mark 711, the second layer alignment mark 713, the third layer alignment mark 715 and the fourth layer alignment mark 717 may include a fluorescent material. In some embodiments, the fluorescent material can be azobenzene. The first layer of alignment marks 711 , the second layer of alignment marks 713 , the third layer of alignment marks 715 and the fourth layer of alignment marks 717 including fluorescent materials can improve optical visibility during the wafer manufacturing process.

FIG. 18 illustrates a schematic plan view of a semiconductor device 1B according to another embodiment of the present disclosure. Fig. 19 is a schematic cross-sectional view along the cross-section lines A-A' and B-B' in Fig. 18. It should be noted that some components have been omitted from Figures 18 and 19 for the sake of clarity.

Referring to FIGS. 18 and 19 , the semiconductor element 1B may have a structure similar to that illustrated in FIGS. 16 and 17 . Components in FIGS. 18 and 19 that are the same as or similar to those in FIGS. 16 and 17 are marked with similar numbers and repeated descriptions are omitted.

Referring to Figures 18 and 19, the semiconductor device 1B may include a second subset of densely aligned Flag 620. The first subset of dense alignment marks 610 and the second subset of dense alignment marks 620 may form a first set of dense alignment marks 600-1. The second subset of dense alignment marks 620 may include a first layer alignment mark 621, a second layer alignment mark 623, a third layer alignment mark 625, and a fourth layer alignment mark 627.

Referring to Figures 18 and 19, in some embodiments, the first layer alignment mark 621 may be linear in plan view. The first layer alignment mark 621 may extend along the direction Y, and the first layer alignment mark 621 may be aligned with the third layer alignment mark 615 in the direction X and with the third layer alignment mark 615 in the direction Y Separate. In a cross-sectional view, the first layer alignment mark 621 may be disposed in the first layer structure 100 and on the corresponding decoupling unit 121 .

In a cross-sectional view, the second layer alignment mark 623 may be located within the second layer structure 200 and offset from the first layer alignment mark 621 and located on the corresponding decoupling unit 221 . In other words, the second layer alignment mark 623 may not be directly located directly above the first layer alignment mark 621 . In plan view, the second layer alignment mark 623 may be linear. The second layer alignment mark 623 may extend along the direction Y and may be separated from the first layer alignment mark 621 in the direction X. The second layer alignment mark 623 may be aligned with the fourth layer alignment mark 617 in the direction X. aligned and separated from the fourth layer alignment mark 617 in direction Y.

In a cross-sectional view, the third layer alignment mark 625 may be located within the third layer structure 300 and offset from the second layer alignment mark 623 and located on the corresponding decoupling unit 321 . In other words, the third layer alignment mark 625 may not be directly located directly above the second layer alignment mark 623 . In plan view, the third layer alignment mark 625 may be linear. The third layer alignment mark 625 may extend along the direction Y and may be separated from the first layer alignment mark 621 in the direction X. The third layer alignment mark 625 may be aligned with the first layer alignment mark 621 in the direction X. aligned and separated from the first layer alignment mark 621 in direction Y.

In a cross-sectional view, the fourth layer alignment mark 627 may be located within the fourth layer structure 400 and offset from the third layer alignment mark 625 and located on the corresponding decoupling unit 421 . In other words, the fourth layer alignment mark 627 may not be directly above the third layer alignment mark 625 . In plan view, the fourth layer alignment mark 627 may be linear. The fourth layer alignment mark 627 may extend along the direction Y and may be separated from the third layer alignment mark 625 in the direction X. For example, the fourth layer alignment mark 627 may be disposed between the first layer alignment mark 621 and the third layer alignment mark 625 Between the three layers of alignment marks 625. In another example, the fourth layer alignment mark 627 can be aligned with the second layer alignment mark 613 in the direction X, and the fourth layer alignment mark 627 can be aligned with the second layer alignment mark 623 in the direction Y. Separate.

In some embodiments, the first layer alignment mark 621 , the second layer alignment mark 623 , the third layer alignment mark 625 and the fourth layer alignment mark 627 may be aligned with each other in the direction Y. In some embodiments, the first layer alignment mark 621 , the second layer alignment mark 623 , the third layer alignment mark 625 and the fourth layer alignment mark 627 may not be aligned with each other in the direction Y.

In some embodiments, the width W7 of the first layer alignment mark 621 may be substantially the same as the width W2 of the first layer alignment mark 611 . In some embodiments, the width W7 of the first layer alignment mark 621 may be different from the width W2 of the first layer alignment mark 611 . In some embodiments, the length L3 of the first layer alignment mark 621 may be substantially the same as the length L1 of the first layer alignment mark 611 . In some embodiments, the length L3 of the first layer alignment mark 621 may be different from the length L1 of the first layer alignment mark 611 .

In some embodiments, the lengths of the second layer alignment marks 623 , the third layer alignment marks 625 , and the fourth layer alignment marks 627 may be substantially the same as the length L3 of the first layer alignment marks 621 . In some embodiments, the lengths of the second layer alignment marks 623 , the third layer alignment marks 625 , and the fourth layer alignment marks 627 may be different from the length L3 of the first layer alignment marks 621 . In some embodiments, the second layer alignment mark 623, the third layer alignment mark 625, the fourth layer alignment mark The width of 627 may be substantially the same as the width W7 of the first layer alignment mark 621 . In some embodiments, the widths of the second layer alignment marks 623 , the third layer alignment marks 625 , and the fourth layer alignment marks 627 may be different from the width W7 of the first layer alignment marks 621 .

In some embodiments, the length L1 of the first layer alignment mark 611 may be substantially the same as the distance G1 between the third layer alignment mark 615 and the first layer alignment mark 621 . In some embodiments, the length L1 of the first layer alignment mark 611 may be different from the distance G1 between the third layer alignment mark 615 and the first layer alignment mark 621 . For example, the length L1 of the first layer alignment mark 611 may be greater than the distance G1 between the third layer alignment mark 615 and the first layer alignment mark 621 .

In some embodiments, the width W2 of the first layer alignment mark 611 may be substantially the same as the distance G1 between the third layer alignment mark 615 and the first layer alignment mark 621 . In some embodiments, the width W2 of the first layer alignment mark 611 may be different from the distance G1 between the third layer alignment mark 615 and the first layer alignment mark 621 . For example, the width W2 of the first layer alignment mark 611 may be greater than the distance G1 between the third layer alignment mark 615 and the first layer alignment mark 621 .

In some embodiments, the first layer alignment marks 621 , the second layer alignment marks 623 , the third layer alignment marks 625 and the fourth layer alignment marks 627 may include a fluorescent material. In some embodiments, the fluorescent material can be azobenzene. The first layer of alignment marks 621 , the second layer of alignment marks 623 , the third layer of alignment marks 625 and the fourth layer of alignment marks 627 including fluorescent materials can improve optical visibility during the wafer manufacturing process.

FIG. 20 illustrates a semiconductor device 1C according to another embodiment of the present disclosure in a schematic plan view. Fig. 21 is a schematic cross-sectional view along the cross-section lines A-A' and B-B' in Fig. 20. It should be noted that some components have been omitted from Figures 20 and 21 for the sake of clarity.

Referring to FIGS. 20 and 21 , the semiconductor element 1C may have a structure similar to that illustrated in FIGS. 16 and 17 . Components in Figures 20 and 21 that are identical or similar to those in Figures 16 and 17 are marked similarly. labels and omit repeated descriptions.

Referring to FIGS. 20 and 21 , the semiconductor device 1C may include a third subset of dense alignment marks 630 . The third subset of dense alignment marks 630 and the first subset of dense alignment marks 610 may be arranged in a mirror image according to the second axis of symmetry S2. In detail, the third subset of dense alignment marks 630 may include a first layer alignment mark 631, a second layer alignment mark 633, a third layer alignment mark 635 and a fourth layer alignment mark 637. . The first layer alignment mark 631 and the first layer alignment mark 611 can be arranged in a mirror image according to the second symmetry axis S2, and the second layer alignment mark 633 and the second layer alignment mark 613 can be arranged according to the second symmetry axis S2. The third layer alignment mark 635 and the third layer alignment mark 615 can be arranged in a mirror image manner according to the second symmetry axis S2, and the fourth layer alignment mark 637 and the fourth layer alignment mark 617 It can be arranged in a mirror image according to the second axis of symmetry S2.

FIG. 22 illustrates a schematic plan view of a semiconductor device 1D according to another embodiment of the present disclosure. Fig. 23 is a schematic cross-sectional view along the cross-section lines A-A' and B-B' in Fig. 22. Fig. 24 is a schematic cross-sectional view along the cross-section lines C-C' and D-D' in Fig. 22. It should be noted that some components have been omitted from Figures 22 to 24 for the sake of clarity.

Referring to FIGS. 22 to 24 , the semiconductor element 1D may have a structure similar to that illustrated in FIGS. 20 and 21 . Components in FIGS. 22 to 24 that are the same as or similar to those in FIGS. 20 and 21 are marked with similar reference numerals and repeated descriptions are omitted.

Referring to FIGS. 22 to 24 , the semiconductor device 1D may include a second subset of dense alignment marks 620 , a third subset of dense alignment marks 630 , a fourth subset of dense alignment marks 640 , and a second subset of spacers. Alignment mark 720, a third subset spacing alignment mark 730, and a fourth subset spacing alignment mark 740. The first subset of dense alignment marks 610 and the second subset of dense alignment marks 620 together form a first group of dense alignment marks 600-1. Third subset dense alignment mark 630 and the fourth subset of dense alignment marks 640 together form a second group of dense alignment marks 600-2. The first subset of spacing alignment marks 710 and the second subset of spacing alignment marks 720 together form a first group of spacing alignment marks 700-1. The third subset of spacing alignment marks 730 and the fourth subset of spacing alignment marks 740 together form a second group of spacing alignment marks 700-2.

Referring to FIGS. 22 to 24 , the second subset of dense alignment marks 620 may be arranged in a manner similar to that illustrated in FIGS. 18 and 19 , and will not be described again here. The third subset dense alignment mark 630 may be arranged in a manner similar to that illustrated in FIGS. 20 and 21 , and will not be described again here.

Referring to FIGS. 22 to 24 , the second subset of spaced alignment marks 720 may include a first layer alignment mark 721 , a second layer alignment mark 723 , a third layer alignment mark 725 and a fourth layer alignment mark. Flag 727. The second subset of spaced alignment marks 720 and the second subset of dense alignment marks 620 may be arranged in a mirror image according to the first axis of symmetry S1.

Referring to FIGS. 22 to 24 , the third subset of spaced alignment marks 730 may include a first layer alignment mark 731 , a second layer alignment mark 733 , a third layer alignment mark 735 and a fourth layer alignment mark 735 . Flag 737. The third subset spacing alignment mark 730 may be disposed in a mirror image of the first subset spacing alignment mark 710 according to the third axis of symmetry S3, or the third subset spacing alignment mark 730 may be arranged in accordance with the first symmetry axis S3 S1 is set in a mirror image manner with the third subset dense alignment mark 630 and will not be described again here.

Referring to FIGS. 22 to 24 , the fourth subset spacing alignment mark 740 may include a first layer alignment mark 741 , a second layer alignment mark 743 , a third layer alignment mark 745 and a fourth layer alignment mark 745 . Flag 747. The fourth subset spacing alignment mark 740 may be arranged in a mirror image of the second subset spacing alignment mark 720 according to the third axis of symmetry S3, or the fourth subset spacing alignment mark 740 may be arranged according to the first symmetry axis S3 S1 is set in a mirror image manner with the fourth subset dense alignment mark 640 and will not be described again here.

One aspect of the present disclosure provides a semiconductor device, including: a first layer structure, including a plurality of conductive components of the first layer structure located above a substrate, and the conductive components located between the first layer structure a decoupling unit of the first layer structure; a first set of dense alignment marks, including a first layer alignment mark located on the decoupling unit of the first layer structure and including a fluorescent material; a first layer alignment mark A two-layer structure located on the first layer structure and including a plurality of conductive components of the second layer structure located above the conductive components of the first layer structure and offset from the conductive components of the first layer structure, and a decoupling unit of the second layer structure located above the first layer structure and between the conductive components of the second layer structure; and a first set of spaced alignment marks, including one located on the second layer structure a second layer alignment mark on the decoupling unit and includes a fluorescent material, wherein the decoupling unit of the first layer structure and the second layer structure includes a low-k dielectric material and each includes a Bottle shaped profile.

Another aspect of the present disclosure provides a semiconductor device, including a first layer structure on a substrate, and the first layer structure includes: a plurality of conductive components of the first layer structure above the substrate, and a first layer structure on the substrate. a decoupling unit of the first layer structure between the conductive components of the layer structure, and which includes a bottle-shaped cross-sectional profile; a first set of dense alignment marks, including: the first layer structure located on the a first layer of alignment marks of the first set of dense alignment marks on the decoupling unit; a first set of spaced alignment marks, including: a first layer of alignment marks according to a first axis of symmetry and the first set of dense alignment marks A first layer of alignment marks of the first set of spaced alignment marks that are mirror images of each other, wherein the first level of alignment marks of the first set of dense alignment marks and the first set of spacers The first layer of the alignment mark includes a fluorescent material, and the decoupling unit of the first layer structure includes a low-k dielectric material.

Another aspect of the present disclosure provides a method for manufacturing a semiconductor device, including forming a first layer structure above a substrate, and the first layer structure includes: above the substrate A plurality of conductive components, and a decoupling unit between the conductive components; forming a first set of dense alignment marks including a first layer alignment mark on the decoupling unit of the first layer structure; in A second layer structure is formed above the first layer structure, and includes: a plurality of conductive components above the first layer structure, and a decoupling unit between the conductive components; and on the second layer structure A first group of spaced alignment marks including a second layer of alignment marks is formed on the decoupling unit, wherein the first layer of alignment marks and the second layer of alignment marks include a fluorescent material, and the first layer of alignment marks The layer structure and the decoupling unit of the second layer structure include a low-k dielectric material.

Due to the design of the semiconductor device of the present disclosure, the first layer of alignment marks 611, 621, 631, 641, 711, 721, 731, 741, the second layer of alignment marks 613, 623, 633, 643, 713, 723, 733, 743, third layer alignment marks 615, 625, 635, 645, 715, 725, 735, 745 and fourth layer alignment marks 617, 627, 637, 647, 717, 727, 737, 747 improves optical resolution during wafer manufacturing. As a result, the yield of manufacturing semiconductor elements 1A, 1B, 1C, and 1D can be improved. In addition, the decoupling units 121, 221, 321, and 421 can reduce the parasitic capacitance of the plurality of conductive components 130, 230, 330, and 430.

Although the disclosure and its advantages have been described in detail, it should be understood that various changes, substitutions and substitutions can be made without departing from the spirit and scope of the disclosure as defined by the claimed claims. For example, many of the processes discussed above may be implemented in different ways and replaced with other processes or combinations thereof.

Furthermore, the scope of the present application is not limited to the specific embodiments of the process, machinery, manufacture, material compositions, means, methods and steps described in the specification. A person of ordinary skill in the art will understand from the disclosure of this disclosure that existing or existing devices that have the same functions or achieve substantially the same results as the corresponding embodiments described herein can be used in accordance with this disclosure. Future development of processes, machinery, manufacturing, material compositions, means, methods, or steps. Accordingly, such processes, machines, manufacturing, material compositions, means, methods, or steps are included in the patentable scope of this application.

1A: Semiconductor components

100: First layer structure

101:Substrate

121: Decoupling unit

130: Conductive parts

200:Second layer structure

230: Conductive parts

221: Decoupling unit

300:Third layer structure

321: Decoupling unit

330: Conductive parts

400:Fourth layer structure

421: Decoupling unit

430: Conductive parts

611: First layer alignment mark

613: Second layer alignment mark

615: Third layer alignment mark

617: Fourth layer alignment mark

711: First layer alignment mark

713: Second layer alignment mark

715:Third layer alignment mark

717: Fourth layer alignment mark

Claims (13)

A semiconductor component including: A first layer structure, including a plurality of conductive components of the first layer structure located above a substrate and a decoupling unit of the first layer structure located between the conductive components of the first layer structure; a first set of dense alignment marks, including a first layer alignment mark located on the decoupling unit of the first layer structure, and including a fluorescent material; A second layer structure is located on the first layer structure and includes a plurality of conductive components of the second layer structure located above the conductive components of the first layer structure and offset from the conductive components of the first layer structure. , and a decoupling unit of the second layer structure located above the first layer structure and between the conductive components of the second layer structure; and a first set of spaced alignment marks, including a second layer alignment mark located on the decoupling unit of the second layer structure, and including a fluorescent material, The decoupling unit of the first layer structure and the second layer structure includes a low-k dielectric material and each includes a bottle-shaped cross-sectional profile. The semiconductor device according to claim 1, wherein the fluorescent material includes azobenzene. The semiconductor device according to claim 2, wherein the first layer structure includes: a first dielectric layer located on the substrate; a second dielectric layer located on the first dielectric layer; an intermediate dielectric layer located on the second dielectric layer; a third dielectric layer located on the intermediate dielectric layer; and a fourth dielectric layer located on the third dielectric layer, wherein the decoupling unit of the first layer structure is located in the intermediate dielectric layer and on the second dielectric layer, And wherein the first layer alignment mark of the first group of dense alignment marks extends along the fourth dielectric layer and the third dielectric layer to the intermediate dielectric layer, and is located on the first layer structure on the decoupling unit. The semiconductor device of claim 3, wherein the first dielectric layer and the third dielectric layer include the same material. The semiconductor device of claim 4, wherein the second dielectric layer and the fourth dielectric layer include the same material. The semiconductor device according to claim 5, wherein one side wall of the first layer alignment mark of the first group of dense alignment marks is tapered. The semiconductor device according to claim 5, wherein a width between two valleys of the side wall of the decoupling unit of the first layer structure is greater than the first layer alignment of the first set of dense alignment marks. A width of a top surface of a sign. The semiconductor device of claim 6, wherein a width of a top surface of the first layer alignment mark of the first set of dense alignment marks is greater than a width between the middle dielectric layer and the third dielectric layer. A width of the first layer of alignment marks of the first set of dense alignment marks at an interface. The semiconductor device of claim 6, wherein a width of a bottom surface of the first layer alignment mark of the first set of dense alignment marks is smaller than a width between the middle dielectric layer and the third dielectric layer. A width of the first layer of alignment marks of the first set of dense alignment marks at an interface. The semiconductor device as claimed in claim 6, wherein each of the conductive components of the first layer structure includes: a bottom barrier layer located on the second dielectric layer; an intermediate conductive layer located on the bottom barrier layer; a top barrier layer located on the middle conductive layer; and A spacer barrier is located on the sidewalls of the bottom barrier layer, the middle conductive layer and the top barrier layer. The semiconductor device of claim 10, wherein the bottom barrier layer and the top barrier layer comprise the same material. The semiconductor device of claim 11, wherein a thickness of the bottom barrier layer is substantially the same as a thickness of the top barrier layer. The semiconductor device of claim 11, wherein a thickness of the bottom barrier layer is different from a thickness of the top barrier layer.