TW202404055A - Electronic device - Google Patents

Abstract

This disclosure provides an electronic device including an electronic unit, a circuit layer and a bonding pad. The electronic unit includes a chip, an insulating layer and a first conductor layer. The insulating layer is disposed on the chip and has a first opening, and the first conductor layer is disposed in the first opening. The circuit layer is disposed corresponding to the electronic unit, the circuit layer includes a second opening and a second conductor layer disposed in the second opening, and the bonding pad contacts the second conductor layer and is electrically connected to the electronic unit. The first conductor layer has a first height, the second conductor layer has a second height, and a ratio of the first height to the second height is greater than or equal to 0.1 and less than or equal to 0.9.

Description

electronic device

The present disclosure relates to an electronic device, and particularly to an electronic device including a semiconductor packaging structure.

In recent years, as electronic devices have become smaller and smaller, and more components need to be integrated into the electronic devices, the design and quality of the circuit layers between components will affect the performance of the electronic devices. In the structure of the circuit layer, the heat dissipation effect affects the performance of the electronic device. Therefore, how to achieve good signal transmission effects and good heat dissipation effects at the same time is an issue that requires further research.

An embodiment of the present disclosure provides an electronic device, which includes an electronic unit, a circuit layer and a bonding pad. The electronic unit includes a chip, an insulating layer and a first conductor layer. The insulating layer is disposed on the wafer, the insulating layer has a first opening, and the first conductor layer is disposed in the first opening. The circuit layer is arranged corresponding to the electronic unit. The circuit layer includes a second opening and a second conductor layer disposed in the second opening, and the bonding pad contacts the second conductor layer and is electrically connected to the electronic unit. The first conductor layer has a first height, the second conductor layer has a second height, and a ratio of the first height to the second height is greater than or equal to 0.1 and less than or equal to 0.9.

The present disclosure can be understood by referring to the following detailed description in combination with the accompanying drawings. It should be noted that, in order to make the readers easy to understand and the drawings to be concise, many of the drawings in the present disclosure only depict electronic devices or electronic devices. part, and certain elements in the drawings are not drawn to actual scale. In addition, the number and size of components in the figures are only for illustration and are not intended to limit the scope of the present disclosure.

Certain words are used throughout this disclosure and in the appended claims to refer to specific components. Those skilled in the art will understand that electronic device manufacturers may refer to the same component by different names. This article is not intended to differentiate between components that have the same function but have different names. In the following description and claims, the words "including" and "include" are open-ended words, so they should be interpreted to mean "including but not limited to...".

It should be understood that when an element or layer is referred to as being "on," "disposed on," or "connected to" another element or layer, it is It may be directly on or directly connected to the other element or layer, or there may be an intervening element or layer in between (indirect cases). In contrast, when an element is referred to as being "directly on," "directly disposed on," or "directly connected to" another element or layer, There are no intervening components or layers between the two. In addition, the arrangement relationship between different components can be explained based on the contents of the diagrams.

The electrical connection may be a direct connection or an indirect connection. The electrical connection between two components can be direct contact to transmit electrical signals, with no other components between them. The electrical connection between two components can also be bridged through the component intermediary between the two components to transmit electrical signals. Electrical connection may also be called coupling.

Although the terms first, second, third... may be used to describe various constituent elements, the constituent elements are not limited to these terms. This term is only used to distinguish a single component from other components in the specification. The same terms may not be used in the request, but replaced by first, second, third... in the order in which the components are declared in the request. Therefore, in the following description, the first component may be the second component in the claim.

According to embodiments of the present disclosure, an optical microscope (OM), a scanning electron microscope (SEM), a film thickness profiler (α-step), an ellipsometer, or other suitable methods may be used. Measure the width, thickness, height or area of each component, or the distance or spacing between components. Specifically, according to some embodiments, a scanning electron microscope can be used to obtain a cross-sectional structural image including the components to be measured, and measure the width, thickness, height or area of each component, or the distance or spacing between components, And obtain the component volume through appropriate methods (such as integration).

The terms "about", "equal to", "equal" or "the same", "substantially" or "substantially" are generally interpreted to mean within 20% of a given value, or to mean within a given value Within the range of 10%, 5%, 3%, 2%, 1% or 0.5%.

It should be noted that in the following embodiments, the technical features in several different embodiments can be replaced, reorganized, and mixed to complete other embodiments without departing from the spirit of the present disclosure.

The electronic device of the present disclosure may include a semiconductor package component, a display device, an antenna device, a touch display device (touch display), a curved display device (curved display) or a non-rectangular display device (free shape display), but is not limited thereto. . The electronic device may be a bendable or flexible electronic device. The electronic device may include a spliced electronic device, but is not limited thereto. The electronic device may include, for example, light-emitting diodes, liquid crystals, fluorescence, phosphors, other suitable display media, or combinations thereof, but is not limited thereto. Light-emitting diodes may include, for example, organic light-emitting diodes (OLED), inorganic light-emitting diodes (LED), sub-millimeter light-emitting diodes (mini-light-emitting diodes). , mini LED), micro-light-emitting diode (micro-LED), quantum dots (QDs) light-emitting diodes (for example, QLED, QDLED), other suitable light-emitting diodes body or any permutation and combination of the above, but not limited to this.

Electronic units in electronic devices may include passive components and active components, such as integrated circuits, capacitors, resistors, inductors, diodes, and transistors. )wait. The diode may include, for example, a light-emitting diode or a photodiode. The sensing device may be, for example, a sensing device for detecting capacitance changes, light, heat energy or ultrasonic waves, but is not limited thereto.

The antenna device may be, for example, a liquid crystal antenna or other types of antennas, but is not limited thereto. The antenna device may, for example, include a spliced antenna device, but is not limited thereto. It should be noted that the electronic device can be any combination of the above, but is not limited thereto. In addition, the shape of the electronic device may be a rectangular shape, a circular shape, a polygonal shape, a shape with curved edges, or other suitable shapes. The electronic device may have peripheral systems such as a driving system, a control system, a light source system, a shelf system, etc. to support the display device, antenna device or splicing device. The electronic device of the present disclosure may be, for example, a semiconductor package component, but is not limited thereto.

One direction DR1 and one direction DR2 are marked in the following figure. The direction DR2 may be the normal direction in the electronic device 1, but is not limited thereto. Direction DR1 may be perpendicular to direction DR2. The following diagram can describe the spatial relationship of the structure according to the direction DR1 and the direction DR2.

Please refer to FIG. 1 , which is a schematic cross-sectional view of an electronic device according to a first embodiment. The electronic device 1 may include a packaging layer 100, an electronic unit 10, a circuit layer 20, a bonding pad 1020 and a bonding pad 1022, but is not limited thereto. The electronic unit 10 may be disposed within the packaging layer 100 , and an upper surface of the electronic unit 10 may be exposed or not covered by the packaging layer 100 , so that the electronic unit 10 may be connected to the circuit layer 20 .

The encapsulation layer 100 may include an insulating material. The insulating material may include an organic insulating material. The organic insulating material may include epoxy resin (epoxy), epoxy molding compound (EMC), build-up film (Ajinomoto Build- up Film (ABF), polyimide (PI) or other suitable organic insulating materials, but are not limited to this.

The encapsulation layer 100 surrounds the electronic unit 10. For example, in a cross-sectional view, the encapsulation layer 100 at least contacts the side surface of the electronic unit 10. The encapsulation layer 100 can reduce the impact of water and oxygen in the environment on the electronic unit 10, but it is not used for this purpose. limit.

The electronic unit 10 may include a chip 104, an insulating layer 106, a conductor layer 1120, a conductor layer 1122 and a conductor layer 1124, but is not limited thereto. The chip 104 may include a capacitor, a resistor, an inductor, a diode chip or a semiconductor die, and the diode chip may include an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode (mini LED). ), micro-light-emitting diodes (micro-LED) or quantum dot light-emitting diodes (QLED or QDLED), but are not limited to this. The wafer 104 may include a bonding pad 1100, a bonding pad 1102 and a bonding pad 1104, but the number of bonding pads of the wafer 104 is not limited thereto.

Insulating layer 106 may be disposed on wafer 104 . For example, insulating layer 106 may be disposed on surface 1040 of wafer 104 and expose bond pads 1100 , 1102 , and 1104 . The insulating layer 106 may have an opening 1080, an opening 1082, and an opening 1084, but the number of openings in the insulating layer 106 is not limited thereto. The opening 1080 may be disposed on the bonding pad 1100 and may expose a portion of the surface of the bonding pad 1100 , the opening 1082 may be disposed on the bonding pad 1102 and may expose a portion of the surface of the bonding pad 1102 , and the opening 1084 may be disposed A surface of bond pad 1104 is on and may expose a portion of bond pad 1104 .

The conductor layer 1120 may be disposed in the opening 1080 , and the conductor layer 1120 may be electrically connected to the bonding pad 1100 . The conductor layer 1122 can be disposed in the opening 1082, and the conductor layer 1122 can be electrically connected to the bonding pad 1102. The conductor layer 1124 can be disposed in the opening 1084, and the conductor layer 1124 can be electrically connected to the bonding pad 1104. In some embodiments, the conductor layer 1120 may be in direct contact with the bonding pad 1100, the conductor layer 1122 may be in direct contact with the bonding pad 1102, and the conductor layer 1124 may be in direct contact with the bonding pad 1104, but is not limited thereto.

The conductor layer disposed within the opening in the insulating layer 106 may also be referred to as a plug or contact. In some embodiments, the conductor layer 1120 and the bonding pad 1100 may provide ground potential or floating potential, but are not limited thereto.

Taking the conductor layer 1124 as an example, the conductor layer 1124 includes a top width W2 and a bottom width W1. The top width W2 can be greater than the bottom width W1, and the ratio of the bottom width W1 to the top width W2 can be greater than 0.3 and less than 0.8 (ie, 0.3 <W1/W2<0.8). The bottom width W1 of the conductor layer 1124 may be the width of a bottom surface of the conductor layer 1124 in contact with the bonding pad 1104, and the top width W2 of the conductor layer 1124 may be a top surface of the conductor layer 1124 in contact with an upper conductor layer 1164. width.

In the present disclosure, the width may be measured along the direction DR1, but is not limited thereto. In some embodiments, the bottom width W1 may be about 12 micrometer (μm), but is not limited thereto.

In addition, the conductor layer 1124 has a height T1, and the ratio of the height T1 to the bottom width W1 may be greater than or equal to 1 and less than or equal to 4.5 (ie, 1≤T1/W1≤4.5). The height T1 of the conductor layer 1124 may be the distance between the bottom surface and the top surface of the conductor layer 1124 in the direction DR2. In the present disclosure, the height may be measured along the direction DR2, but is not limited thereto. Conductor layer 1120 and conductor layer 1122 may also have the same characteristics as conductor layer 1124.

The circuit layer 20 may be provided corresponding to the electronic unit 10 and may be provided on the electronic unit 10 . The circuit layer 20 may be, for example, a redistribution layer (RDL), but is not limited thereto. The circuit layer 20 may include an insulating layer 114, a conductor layer 1160, a conductor layer 1162, a conductor layer 1164, a conductor layer 1180 and a conductor layer 1182, but is not limited thereto. The circuit layer 20 may further include transistors, capacitors, resistors, antenna units or other electronic components.

According to some embodiments, the electronic component can be electrically connected to the chip 140 through the conductor layer, but is not limited thereto. The electronic component may further include a substrate and a circuit layer formed on the substrate, where the substrate may include polyimide, glass or silicon substrate, but is not limited thereto. The circuit layer may include active components and passive components, but is not limited thereto.

Conductor layer 1160, conductor layer 1162, and conductor layer 1164 may be disposed within insulating layer 114. The conductor layer 1160 can be disposed on the conductor layer 1120 and can be electrically connected to the conductor layer 1120. The conductor layer 1162 can be disposed on the conductor layer 1122 and can be electrically connected to the conductor layer 1122. The conductor layer 1164 can be disposed on the conductor layer 1124 and can be electrically connected to the conductor layer 1122. The conductor layer 1124 is electrically connected. In some embodiments, the conductor layer 1160 can be in direct contact with the conductor layer 1120, the conductor layer 1162 can be in direct contact with the conductor layer 1122, and the conductor layer 1164 can be in direct contact with the conductor layer 1124, but this is not a limitation.

The conductor layer 1160 , the conductor layer 1162 and the conductor layer 1164 may extend along a direction perpendicular to the direction DR2 (such as the direction DR1 ), but are not limited thereto. The horizontally extending conductor layer provided in the insulating layer 106 may also be called a conductor line, but is not limited thereto.

Taking the conductor layer 1164 as an example, the conductor layer 1164 has a height T3, and the height T3 may be greater than or equal to the height T1 (ie, T1≤T3). The height T3 of the conductor layer 1164 may be the distance between a bottom surface and a top surface of the conductor layer 1164 in the direction DR2. For example, the bottom surface of the conductor layer 1164 may be in contact with the insulating layer 106 , and the top surface of the conductor layer 1164 may be in contact with the insulating layer 114 . Conductor layer 1160 and conductor layer 1162 may also have the same characteristics as conductor layer 1164.

The circuit layer 20 may include an opening 1200 and an opening 1202 disposed in the insulating layer 114 . The opening 1200 may be disposed on the conductor layer 1160 and may expose a portion of the surface of the conductor layer 1160 , and the opening 1202 may be disposed on the conductor layer 1164 and may expose a portion of the surface of the conductor layer 1164 .

The conductor layer 1180 can be disposed in the opening 1200, and the conductor layer 1180 can be electrically connected to the conductor layer 1160. The conductor layer 1182 can be disposed in the opening 1202, and the conductor layer 1182 can be electrically connected to the conductor layer 1164. In some embodiments, the conductor layer 1180 can be in direct contact with the conductor layer 1160, and the conductor layer 1182 can be in direct contact with the conductor layer 1164, but this is not a limitation. According to some embodiments, the conductor layer 1180 and the conductor layer 1182 may be, for example, metal bonding pads (under bump metallization, UBM).

Taking the conductor layer 1182 as an example, the conductor layer 1182 includes a top width W4 and a bottom width W3. The top width W4 and the bottom width W3 may be approximately equal, and the ratio of the bottom width W3 to the top width W4 may be greater than 0.7 and less than 1.2 ( That is, 0.7<W3/W4<1.2). In some embodiments, since the conductive layer 1182 is used to electrically connect the bonding pads 1022, the conductive layer 1182 may have a larger top width W4.

The bottom width W3 of the conductor layer 1182 can be the width of a bottom surface of the conductor layer 1182 that contacts the underlying conductor layer (such as conductor layer 1164), and the top width W4 of the conductor layer 1182 can be the width of the conductor layer that contacts the upper bonding pad 1022. The width of a top surface of 1182.

According to some embodiments (as shown in FIGS. 1 and 2 ), the upper surface of the conductor layer 1180 and the upper surface of the conductor layer 1182 may have a recess R, so that part of the upper surface of the conductor layer 1180 and the upper surface of the conductor layer 1182 is lower on the upper surface of the insulating layer 114 . Through the design of the recess R on the upper surface of the conductor layer 1180 and the upper surface of the conductor layer 1182, the accuracy of disposing the bonding pads on the conductor layer can be improved, but is not limited thereto.

According to some embodiments (as shown in FIGS. 5 to 9 ), the upper surfaces of the conductor layer 1180 and the upper surface of the conductor layer 1182 may be flat without recesses, so that the upper surface of the insulating layer 114 may be in contact with the upper surface of the conductor layer 1180 . It is substantially flush with the upper surface of the conductor layer 1182, but is not limited thereto.

In some embodiments, the top width W4 may be greater than the bottom width W3, the bottom width W3 may be greater than the top width W2, and the top width W2 may be greater than the bottom width W1, but is not limited thereto. In addition, the ratio of the bottom width W1 to the top width W2 of the conductor layer 1124 may be smaller than the ratio of the bottom width W3 to the top width W4 of the conductor layer 1182 (ie, (W1/W2) < (W3/W4)).

The conductor layer 1182 has a height T2, and the ratio of the height T2 to the top width W4 may be greater than or equal to 0.2 and less than or equal to 0.5 (ie, 0.2≤T2/W4≤0.5). The height T2 of the conductor layer 1182 may be the maximum distance between the bottom surface and the top surface of the conductor layer 1182 in the direction DR2. Conductor layer 1180 may also have the same characteristics as conductor layer 1182.

The height T1 of the conductor layer 1124 may be less than the height T2 of the conductor layer 1182, and the ratio of the height T1 of the conductor layer 1124 to the height T2 of the conductor layer 1182 may be greater than or equal to 0.1 and less than or equal to 0.9 (ie, 0.1≤T1/T2≤ 0.9).

In some embodiments, the chip 104 may include a microcontroller (MCU), a central processing unit (CPU), a graphics processing unit, an application specific integrated circuit, ASIC), field programmable gate array (FPGA) or a combination of the above, but is not limited to this.

When such wafers include high-density bond pads, the height T1 may be greater than or equal to 2 microns and less than or equal to 4.5 microns, the height T2 may be greater than or equal to 5 microns and less than or equal to 20 microns, and the height T3 may be greater than or equal to 2 microns. and less than or equal to 10 microns, but not limited to this.

In some embodiments, the chip 104 may include a power management integrated circuit (PMIC), an analog integrated circuit, or a combination thereof, but is not limited thereto. When such wafers include low density bond pads, the height T1 may be greater than or equal to 5 microns and less than or equal to 20 microns, the height T2 may be greater than or equal to 25 microns and less than or equal to 60 microns, and the height T3 may be greater than or equal to 10 microns. and less than or equal to 30 microns, but not limited to this.

In addition, the conductor layer 1124 may include a side wall 1060, the insulating layer 106 may include a bottom surface 1062, the side wall 1060 may be connected to the bottom surface 1062, and there may be an included angle θ1 between the side wall 1060 and the bottom surface 1062. The conductor layer 1182 may include a side wall 1140, the conductor layer 1164 may include a top surface 1142, the side wall 1140 may be connected to the top surface 1142, and there may be an included angle θ2 between the side wall 1140 and the top surface 1142, and the included angle θ1 may be less than the included angle θ2 . Conductor layer 1120, conductor layer 1122, and conductor layer 1180 may also have the same characteristics.

The bonding pad 1020 may be disposed on the conductor layer 1180 , and the bonding pad 1020 may be electrically connected to the conductor layer 1180 . The bonding pad 1022 may be disposed on the conductor layer 1182 , and the bonding pad 1022 may be electrically connected to the conductor layer 1182 . In some embodiments, the bonding pad 1020 may contact (eg, directly contact) the conductor layer 1180, and the bonding pad 1022 may contact (eg, directly contact) the conductor layer 1182, but is not limited thereto.

In this embodiment, the height T1 of the conductor layer 1120, the conductor layer 1122 and the conductor layer 1124 can be smaller than the height T2 of the conductor layer 1180 and the conductor layer 1182. Since the height T1 is smaller, the heat generated by the wafer 104 can be transmitted through a short distance. And it can be conducted to the external conductor layer (such as the conductor layer 1182) in a short time, and can reduce the heat accumulation in the conductor layer (such as the conductor layer 1124) closest to the wafer 104. In this way, the heat dissipation effect of the electronic device 1 can be improved, thereby reducing the probability that the performance of the electronic device 1 will be reduced due to high temperature.

The height T3 of the conductor layer 1160, the conductor layer 1162, and the conductor layer 1164 may be greater than the height T1 of the conductor layer 1120, the conductor layer 1122, and the conductor layer 1124, so the conductor layer 1160, the conductor layer 1162, and the conductor layer 1164 may have lower impedance ( resistance). Since the conductor layer 1160, the conductor layer 1162 and the conductor layer 1164 can be used as laterally extending conductor lines, the lower impedance can improve the efficiency of signal transmission.

Since the conductor layer 1180 and the conductor layer 1182 can serve as the outermost conductive layer in the circuit layer 20 and can be used to electrically connect the bonding pads 1020 and 1022 , the conductor layer 1180 and the conductor layer 1182 need better electrical connection capabilities. . When the ratio of the bottom width W3 to the top width W4 of the conductor layer 1182 may be greater than 0.7 and less than 1.2, the ratio may be greater than the ratio of the bottom width W1 to the top width W2 of the conductor layer 1124 and the included angle θ1 may be less than the included angle θ2. At this time, the conductor layer 1182 may have a shape close to a straight tube and may have better signal transmission efficiency.

In some embodiments, the insulating layer 106 and the insulating layer 114 may include organic insulating materials, inorganic insulating materials, or combinations thereof, but are not limited thereto. Organic insulating materials may include polyimide (PI), photosensitive polyimide (PSPI), epoxy resin (epoxy), other suitable organic insulating materials, or combinations of the above, but this is not the case. limit. Inorganic insulating materials may include aluminum oxide, silicon dioxide, silicon nitride, silicon oxynitride, other suitable inorganic insulating materials or combinations of the above, but not is limited.

In some embodiments, the insulating layer 106 or the insulating layer 114 may include a filler, and the material of the filler may include aluminum oxide, silicon oxide or silicon carbide, other suitable materials, or a combination thereof, but Not limited to this. The particle size of the filler material is greater than or equal to 0.5 microns and less than or equal to 20 microns, but is not limited to this.

In some embodiments, the materials of the bonding pads 1100, 1102 and 1104 may include aluminum or other suitable metal materials, but are not limited thereto. The materials of the bonding pads 1020 and 1022 may include tin, copper, nickel, silver, other suitable metals, or combinations thereof, but are not limited thereto.

Please refer to Figure 2, which shows an enlarged schematic diagram of the area RX in Figure 1. In some embodiments, the conductor layer may include a multi-layer structure, but is not limited thereto. Taking the conductor layer 1180 as an example, the conductor layer 1180 may include a conductor structure 1360, a conductor structure 1362, and a conductor structure 1364, but the number of conductor structures is not limited thereto. The conductive structure 1362 can be disposed on the conductive structure 1360, and the conductive structure 1364 can be disposed between the conductive structure 1362 and the bonding pad 1020.

The projected length of the conductive structure 1362 along the direction DR2 on a horizontal plane may be greater than the projected length of the conductive structure 1360 along the direction DR2 on the horizontal plane. The projected length of the conductive structure 1364 along the direction DR2 on a horizontal plane may be greater than the projected length of the conductive structure 1360 along the direction DR2 on the horizontal plane.

The conductor layer 1160 may include a conductor structure 1380, a conductor structure 1382 and a conductor structure 1384, but is not limited thereto. The conductor structure 1382 can be disposed on the conductor structure 1380, and the conductor structure 1384 can be disposed between the conductor structure 1382 and the conductor layer 1180. The projected length of the conductive structure 1384 on the horizontal plane along the direction DR2 may be greater than the projected length of the conductive structure 1380 on the horizontal plane along the direction DR2.

The resistivity (Ω*m) of conductor structure 1364 and conductor structure 1384 may be different from the resistivity of conductor structure 1362 and conductor structure 1382, and the resistivity of conductor structure 1362 and conductor structure 1382 may be different from the resistivity of conductor structure 1360 and conductor Resistivity of structure 1380. For example, the resistivity of conductor structure 1364 may be less than the resistivity of conductor structure 1360 . The resistivity of conductor structure 1384 may be greater than the resistivity of conductor structure 1380.

For example, the conductor structure 1360 and the conductor structure 1380 may include a seed layer, and the material thereof may include titanium, but is not limited thereto. The conductor structure 1362 and the conductor structure 1382 may include a seed layer, and the material thereof may include copper, but is not limited thereto. The conductor structure 1364 and the conductor structure 1384 may include an electroplating layer, and the material thereof may include copper, but is not limited thereto.

In some embodiments, a surface 1064 of the insulating layer 106 and a surface 1002 of the encapsulation layer 100 may not be coplanar, but are not limited to this. For example, in the direction DR2, the insulating layer 106 may have a thickness DT2, and there may be a distance DT1 between the surface 1064 and the surface 1002, and the distance DT1 may be approximately one-tenth of the thickness DT2, but this is not considered to be the case. limit.

Since surface 1064 and surface 1002 may not be coplanar, a stepped structure may be formed. When other film layers are formed on the insulating layer 106 and the encapsulating layer 100, this design can provide an anchoring effect, for example, improving the connection strength in the structure.

As shown in FIGS. 1 and 2 , in this embodiment, the conductor layer 1160 and the conductor layer 1164 may extend from the surface 1064 of the insulating layer 106 to the surface 1002 of the encapsulation layer 100 , but are not limited thereto. When the distance DT1 is approximately one-tenth of the thickness DT2, the chance of breakage of the conductor layer 1160 and the conductor layer 1164 due to an excessive gap between the surface 1064 and the surface 1002 can be reduced. In some embodiments, conductor layer 1160 and conductor layer 1164 may not extend onto surface 1002 of encapsulation layer 100 .

In some embodiments, the conductor layer 1160 and the conductor layer 1164 overlap the insulating layer 106 and the encapsulation layer 100. For example, the conductor layer 1160 and the conductor layer 1164 may extend from the surface 1064 of the insulating layer 106 to the encapsulation layer 100 along the direction DR1. The surface 1002 of the insulating layer 106 may have an arc-angle design, but is not limited to this. The arc angle on the surface of the insulating layer can reduce the risk of rupture of the conductor layer, further increase the contact surface area, and improve the bonding strength of the electronic device, but it is not limited to this.

The electronic device of the present disclosure is not limited to the above embodiments. Other embodiments of the present disclosure will continue to be disclosed below. However, in order to simplify the description and highlight the differences between the embodiments, the same elements will be labeled with the same numbers in the following, and the repeated parts will not be described again. In addition, the features and functions of the electronic device introduced above may be applied to other embodiments.

Please refer to FIGS. 3 to 7 , which are schematic cross-sectional views of a manufacturing method of an electronic device according to a second embodiment. In the step of FIG. 3 , the conductor layer may not be formed in the openings 1080 and 1084 of an electronic unit 10A and an electronic unit 10B, and the electronic unit 10A and the electronic unit 10B of this embodiment may not have the joints in FIG. 1 pad 1102 and opening 1082, but is not limited to this. The insulating layer 106 of the electronic unit 10A and the electronic unit 10B can be bonded through an adhesive layer 122 and a carrier board 124 .

Then, the adhesive layer 122 and the electronic components may be formed through a thermal compression molding process, a thermal injection molding process, a vacuum lamination, a deposition process or other suitable processes. An encapsulation layer 100 is formed on the unit 10A and the electronic unit 10B, and the encapsulation layer 100 may cover the electronic unit 10A and the electronic unit 10B.

The electronic unit 10A and the electronic unit 10B can be bonded to the adhesive layer 122 using high temperature and high pressure, and the material of the insulating layer 106 may be harder than the material of the adhesive layer 122. Therefore, the adhesive layer 122 is squeezed by the electronic unit 10A and the electronic unit 10B. The thickness of the portion may become smaller, such that the surface 1064 of the insulating layer 106 and the surface 1002 of the packaging layer 100 may not be coplanar.

In the step of FIG. 4 , the electronic unit 10A and the electronic unit 10B can be turned over, the adhesive layer 122 and the carrier plate 124 in FIG. 3 can be removed, and a surface 1004 of the packaging layer 100 can be passed through an adhesive layer 126 and a carrier plate. Board 128 is bonded. The surface 1004 and the surface 1002 of the encapsulation layer 100 may be two opposite surfaces in the direction DR2. The materials of the adhesive layer 122 and the adhesive layer 126 may include acrylate adhesive, polyurethane (PU), silicone adhesive (silicon adhesive) or other suitable materials, and the materials of the carrier plates 124 and 128 may include Glass, stainless steel (stainless steel), carbon fiber resin (carbon fiber resin), glass fiber resin (glass fiber resin) or other suitable materials, but is not limited to this.

In the steps of FIG. 5 , conductor layers 1120 and 1124 may be formed within openings 1080 and 1084 , conductor layers 1160 and 1164 may be formed on conductor layers 1120 and 1124 , and conductor layers 1160 and 1164 may be formed on conductor layers 1120 and 1124 . Conductor layer 1180 and conductor layer 1182 are formed on conductor layer 1160 and conductor layer 1164.

For example, the conductor layer 1120 and the conductor layer 1124 can be formed through a lithography and etching process, the conductor layer 1160 and the conductor layer 1164 can be formed through another lithography and etching process, and still another lithography and etching process. Conductor layer 1180 and conductor layer 1182 are formed, but are not limited thereto. In other words, the conductor layers located on the same horizontal plane can be formed through the same lithography and etching process, but this is not a limitation.

In some embodiments (as shown in FIGS. 5 to 9 ), the upper surface of the conductor layer 1180 and the upper surface of the conductor layer 1182 may be flat without recesses after the fabrication is completed, but are not limited to this. In some embodiments (as shown in FIGS. 1 and 2 ), the upper surface of the conductor layer 1180 and the upper surface of the conductor layer 1182 may have a recess R after the fabrication is completed, but it is not limited thereto.

In addition, the number of conductor layers in the circuit layer 20 of the present disclosure can be adjusted according to different designs, and multi-layer stacked conductor layers can be formed by repeated photolithography and etching processes, as shown in FIGS. 8 and 9 .

In the step of FIG. 6 , the insulating layer 114 may be formed on the electronic unit 10A, the electronic unit 10B and the packaging layer 100 . For example, the insulating layer 114 can be formed through a deposition process, the insulating layer 114 can fill the space between the conductor layers and cover the conductor layer 1180 and the conductor layer 1182, and the excess insulating layer 114 can be removed through a grinding process. The top surfaces of the conductor layer 1180 and the conductor layer 1182 are exposed, but are not limited thereto.

Additionally, bonding pads 1020 and 1022 may be formed on the conductor layers 1180 and 1182 of the circuit layer 20 . Then, a cutting process can be performed to separate the electronic unit 10A and the electronic unit 10B, and the adhesive layer 126 and the carrier 128 can be removed to obtain the electronic device 1 of FIG. 7 .

Please refer to FIG. 8 , which is a schematic cross-sectional view of an electronic device according to a third embodiment. The difference from the first embodiment is that the electronic device 1 of this embodiment may include an electronic unit 10A and an electronic unit 10B that are electrically connected to each other. The electronic unit 10A may include conductor layers 1120 , 1122 , and 1124 , the insulating layer 106 of the electronic unit 10A may include openings 1080 , 1082 , and 1084 , and the conductor layers 1120 , 1122 , and 1124 They can be respectively disposed in the opening 1080, the opening 1082 and the opening 1084.

The electronic unit 10B may include a conductor layer 1126 and a conductor layer 1128. The insulating layer 106 of the electronic unit 10B may include an opening 1086 and an opening 1088. The conductor layer 1126 may be disposed in the opening 1086 and may be connected to a bonding pad. 1106 is electrically connected, and the conductor layer 1128 can be disposed in the opening 1088 and can be electrically connected to a bonding pad 1108.

The circuit layer 20 may include a conductor layer 1160, a conductor layer 1162, a conductor layer 1164, a conductor layer 1166 and a conductor layer 1168. The above conductor layers may be respectively provided on the conductor layer 1120, the conductor layer 1122, the conductor layer 1124, the conductor layer 1126 and the conductor layer 1168. on the conductor layer 1128, and the conductor layer 1160, the conductor layer 1162, the conductor layer 1164, the conductor layer 1166 and the conductor layer 1168 can be electrically connected to the conductor layer 1120, the conductor layer 1122, the conductor layer 1124, the conductor layer 1126 and the conductor layer 1128 respectively. Additionally, conductor layers 1160 , 1164 , 1166 , and 1168 may not extend onto surface 1002 of encapsulation layer 100 .

In this embodiment, the circuit layer 20 may include an opening 1300, an opening 1302, an opening 1304, an opening 1306, a conductor layer 1320, a conductor layer 1322, a conductor layer 1324 and a conductor layer 1326. . The openings 1300 , 1302 , 1304 , and 1306 may be provided in the insulating layer 114 . The opening 1300 can be disposed on the conductor layer 1160 and can expose a part of the surface of the conductor layer 1160. The opening 1302 can be disposed on the conductor layer 1164 and can expose a part of the surface of the conductor layer 1164. The opening 1304 can be disposed on The conductor layer 1166 can expose a portion of the surface of the conductor layer 1166 , and the opening 1306 can be disposed on the conductor layer 1168 and can expose a portion of the surface of the conductor layer 1168 .

The conductor layer 1320, the conductor layer 1322, the conductor layer 1324 and the conductor layer 1326 can be respectively disposed in the opening 1300, the opening 1302, the opening 1304 and the opening 1306, and the conductor layer 1320, the conductor layer 1322, the conductor layer 1324 and the conductor layer Layer 1326 may be electrically connected to conductor layer 1160, conductor layer 1164, conductor layer 1166, and conductor layer 1168, respectively.

In this embodiment, the circuit layer 20 may include a conductor layer 1340, a conductor layer 1342, and a conductor layer 1344. The conductor layer 1340 and the conductor layer 1344 can be disposed on the conductor layer 1320 and the conductor layer 1326 respectively and can be electrically connected to the conductor layer 1320 and the conductor layer 1326 respectively.

The conductor layer 1342 can be disposed on the conductor layer 1322 and the conductor layer 1324. One end of the conductor layer 1342 can be connected to the conductor layer 1322, and the other end of the conductor layer 1342 can be connected to the conductor layer 1324. The conductor layer 1342 can be electrically connected to the conductor layer 1322. and the conductor layer 1324, so that the electronic unit 10A and the electronic unit 10B can be electrically connected to each other.

The opening 1200 and the conductor layer 1180 can be disposed between the conductor layer 1340 and the bonding pad 1020. The opening 1200 can expose a part of the surface of the conductor layer 1340, and the bonding pad 1020, the conductor layer 1180 and the conductor layer 1340 can be electrically connected to each other. , thereby allowing the bonding pad 1020 to be electrically connected to the electronic unit 10A.

The opening 1202 and the conductor layer 1182 may be disposed between the conductor layer 1344 and the bonding pad 1022. The opening 1202 may expose a portion of the surface of the conductor layer 1344, and the bonding pad 1022, the conductor layer 1182 and the conductor layer 1344 may be electrically connected to each other. , thereby allowing the bonding pad 1022 to be electrically connected to the electronic unit 10B.

In addition, in this embodiment, the included angle θ2 may be the included angle between a side wall of the conductor layer 1180 and a top surface of the conductor layer 1340 or the included angle between a side wall of the conductor layer 1182 and a top surface of the conductor layer 1344 , but not limited to this.

Please refer to FIG. 9 , which is a schematic cross-sectional view of an electronic device according to a fourth embodiment. In this embodiment, the electronic unit 10 may include a conductor layer 1120 and a conductor layer 1124, the insulating layer 106 of the electronic unit 10 may include an opening 1080 and an opening 1084, and the conductor layer 1120 and the conductor layer 1124 may be respectively disposed in the opening. 1080 and opening 1084 inside.

The circuit layer 20 may include a conductor layer 1160 and a conductor layer 1164 respectively disposed on the conductor layer 1120 and the conductor layer 1124, and the conductor layer 1160 and the conductor layer 1164 may be electrically connected to the conductor layer 1120 and the conductor layer 1124 respectively. Additionally, conductor layer 1160 and conductor layer 1164 may not extend onto surface 1002 of packaging layer 100 .

In this embodiment, the circuit layer 20 may include an opening 1400, an opening 1402, a conductor layer 1420 and a conductor layer 1422. Openings 1400 and 1402 may be disposed within the insulating layer 114 and on the conductor layer 1160 and the conductor layer 1164, respectively. The opening 1400 may be disposed on the conductor layer 1160 and may expose a portion of the surface of the conductor layer 1160 , and the opening 1402 may be disposed on the conductor layer 1164 and may expose a portion of the surface of the conductor layer 1164 .

The conductor layer 1420 and the conductor layer 1422 can be disposed in the opening 1400 and the opening 1402 respectively, and the conductor layer 1420 and the conductor layer 1422 can be electrically connected to the conductor layer 1160 and the conductor layer 1164 respectively. The conductor layer 1420 may be in direct contact with the conductor layer 1160, and the conductor layer 1422 may be in direct contact with the conductor layer 1164, but is not limited thereto.

In this embodiment, the circuit layer 20 may include a conductor layer 1440, a conductor layer 1442, a conductor layer 1444 and a conductor layer 1446. The conductor layer 1442 and the conductor layer 1446 can be disposed on the conductor layer 1420 and the conductor layer 1422 respectively and can be electrically connected to the conductor layer 1420 and the conductor layer 1422 respectively. The conductor layer 1442 may be in direct contact with the conductor layer 1420, and the conductor layer 1446 may be in direct contact with the conductor layer 1422, but is not limited thereto.

The opening 1200 and the conductor layer 1180 can be disposed between the conductor layer 1440 and the bonding pad 1020. The opening 1200 can expose a part of the surface of the conductor layer 1440, and the bonding pad 1020, the conductor layer 1180 and the conductor layer 1440 can be electrically connected to each other. . The opening 1202 and the conductor layer 1182 may be disposed between the conductor layer 1446 and the bonding pad 1022. The opening 1202 may expose a portion of the surface of the conductor layer 1446, and the bonding pad 1022, the conductor layer 1182 and the conductor layer 1446 may be electrically connected to each other. .

In this embodiment, the circuit layer 20 may further include an opening 1204 and a conductor layer 1184, and the electronic device 1 may further include a bonding pad 1024. The opening 1204 may be disposed in the insulating layer 114 and on the conductor layer 1444, the opening 1204 may expose a portion of the surface of the conductor layer 1444, the conductor layer 1184 may be disposed in the opening 1204, and the bonding pad 1024 may be disposed on on conductor layer 1184. The bonding pad 1024, the conductor layer 1184, and the conductor layer 1444 may be electrically connected to each other.

In addition, in this embodiment, the included angle θ2 may be an included angle between a side wall of the conductor layer 1182 and a top surface of the conductor layer 1446, an included angle between a side wall of the conductor layer 1180 and a top surface of the conductor layer 1440, or It is the angle between one side wall of the conductor layer 1184 and a top surface of the conductor layer 1444, but is not limited to this.

The difference from the first embodiment is that the electronic device 1 of this embodiment may include an electronic component 30 disposed in the circuit layer 20 . The electronic component 30 may include active components, passive components, or a combination thereof. For example, the electronic component 30 in FIG. 9 can be a thin film transistor, but is not limited thereto.

The electronic component 30 may include a gate 146G, a source 146S, a drain 146D and a semiconductor layer 146C, but is not limited thereto. The source electrode 146S can electrically connect the conductor layer 1440 and the semiconductor layer 146C, so the bonding pad 1020 can electrically connect the source electrode 146S of the electronic component 30 . The drain electrode 146D can electrically connect the conductor layer 1442 and the semiconductor layer 146C, so the electronic component 30 can electrically connect the electronic unit 10 . In addition, the gate 146G can be electrically connected to the conductor layer 1444 (not shown), so the bonding pad 1024 can be electrically connected to the gate 146G of the electronic component 30 . However, the design of the electronic component 30 of the present disclosure is not limited to the above.

In summary, in the electronic device of the present disclosure, the height of the first conductor layer within the insulating layer of the electronic unit may be smaller than the height of the outermost second conductor layer in the circuit layer for connecting the bonding pads. This allows the heat generated by the wafer to pass through a short distance and be conducted to the external conductor layer in a short time, and can reduce heat accumulation in the conductor layer closest to the wafer. In this way, the heat dissipation effect of the electronic device can be improved, thereby reducing the probability that the performance of the electronic device will be reduced due to high temperature. When the ratio of the bottom width to the top width of the second conductor layer may be greater than 0.7 and less than 1.2, the ratio may be greater than the ratio of the bottom width to the top width of the first conductor layer. At this time, the second conductor layer can have a shape close to a straight tube and can improve the efficiency of signal transmission. The above are only embodiments of the present disclosure, and all equivalent changes and modifications made based on the patent scope of the present disclosure shall be within the scope of the present disclosure.

1: Electronic devices 10,10A,10B: Electronic unit 100:Encapsulation layer 1020,1022,1024,1100,1102,1104: Bonding pad 104:Chip 1002,1004,1040,1064: Surface 106,114: Insulation layer 1060,1140:Side wall 1062: Bottom 1080,1082,1084,1086,1088,1200,1202,1204,1300,1302,1304,1306,1400,1402: opening 1120,1122,1124,1126,1128,1160,1162,1164,1166,1168,1180,1182,1320,1322,1324,1326,1340,1342,1344,1420,1422: Conductor layer 1142:Top surface 122,126: Adhesive layer 124,128: Carrier board 1360,1362,1364,1380,1382,1384: Conductor structure 146C: Semiconductor layer 146D: drain 146G: Gate 146S: Source 20:Circuit layer 30: Electronic components DR1, DR2: direction DT1: distance DT2:Thickness R: depression RX:Region T1-T3: height W1, W3: bottom width W2, W4: Top width θ1, θ2: included angle

FIG. 1 is a schematic cross-sectional view of an electronic device according to a first embodiment. Figure 2 shows an enlarged schematic diagram of area RX in Figure 1. 3 to 7 are schematic cross-sectional views of the manufacturing method of the electronic device according to the second embodiment. FIG. 8 is a schematic cross-sectional view of an electronic device according to a third embodiment. FIG. 9 is a schematic cross-sectional view of an electronic device according to a fourth embodiment.

1: Electronic devices

10: Electronic unit

100:Encapsulation layer

1020,1022,1100,1102,1104: Bonding pad

104:Chip

1040:Surface

106,114: Insulation layer

1060,1140:Side wall

1062: Bottom

1080,1082,1084,1200,1202: opening

1120,1122,1124,1160,1162,1164,1166,1180,1182: conductor layer

1142:Top surface

20:Circuit layer

DR1, DR2: direction

R: depression

RX:Region

T1-T3: height

W1, W3: bottom width

W2, W4: Top width

θ1, θ2: included angle

Claims (10)

An electronic device including: An electronic unit, including: a chip; An insulating layer is disposed on the wafer, the insulating layer has a first opening; and A first conductor layer is disposed in the first opening; A circuit layer is provided corresponding to the electronic unit, the circuit layer includes a second opening and a second conductor layer disposed in the second opening; and a bonding pad contacts the second conductor layer and electrically connects the electronic unit, The first conductor layer has a first height, the second conductor layer has a second height, and a ratio of the first height to the second height is greater than or equal to 0.1 and less than or equal to 0.9. The electronic device of claim 1, wherein the second conductor layer includes a top width, and a ratio of the second height to the top width is greater than or equal to 0.2 and less than or equal to 0.5. The electronic device of claim 1, wherein the first conductor layer includes a top width and a bottom width, and a ratio of the bottom width to the top width is greater than 0.3 and less than 0.8. The electronic device according to claim 1, wherein the second conductor layer includes: a first conductor structure; A second conductor structure is disposed on the first conductor structure; A third conductor structure is disposed between the second conductor structure and the bonding pad, The resistivity of the third conductor structure is greater than the resistivity of the second conductor structure, and the resistivity of the second conductor structure is different from the resistivity of the first conductor structure. The electronic device of claim 4, wherein the resistivity of the second conductor structure is less than the resistivity of the first conductor structure. The electronic device of claim 1, wherein the second conductor layer includes a top width and a bottom width, and a ratio of the bottom width to the top width is greater than 0.7 and less than 1.2. The electronic device of claim 1, wherein the first conductor layer includes a first top width and a first bottom width, the second conductor layer includes a second top width and a second bottom width, and A first ratio of the first bottom width to the first top width is smaller than a second ratio of the second bottom width to the second top width. The electronic device of claim 1, wherein the first conductor layer includes a bottom width, and a ratio of the first height to the bottom width is greater than or equal to 1 and less than or equal to 4.5. The electronic device according to claim 1, further comprising an encapsulation layer surrounding the electronic unit, wherein a third conductor layer of the circuit layer overlaps the insulating layer and the encapsulation layer. The electronic device of claim 9, wherein the third conductor layer contacts a surface of the insulating layer, and the third conductor layer contacts a surface of the packaging layer.

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