Patent Grant
11112658
The present disclosure relates to a display device, a display system, and a method of installing or mounting an electronic component.
Generally, the electronic component for the electronic device is installed on a surface of a substrate by joining a pad part of the electronic component to a line pattern on the substrate.
For example, Japanese Patent Publication No. 2012-226058 discloses a connection method of the line pattern of the substrate and a line connection part of the electronic component by using an anisotropic conductive film (ACF). The anisotropic conductive film includes a conductive particle dispersed in a thermosetting resin (thermohardening resin or thermally-curable resin). The line pattern of the substrate and the line connection part of the electronic component are electrically connected by the anisotropic conductive film.
In prior systems and methods that use anisotropic conductive film, such as disclosed in Japanese Patent Publication No. 2012-226058, the conductive particles are in physically contact with the line pattern of the substrate and the line connection part of the electronic component. Accordingly, the line pattern of the substrate and the line connection part of the electronic component are electrically connected to each other. However, since the conductive particles are dispersed in the thermosetting resin, the connection resistance tends to increase.
In addition, between the substrate and the electronic component, there exists an insulated part other than the junction portion part between the line pattern of the substrate and the line connection part of the electronic component. Some of the conductive particles dispersed in the thermosetting resin are interposed between the substrate and the electronic component corresponding to the insulated part. This decreases the insulating properties in the insulated part.
Furthermore, recently there has been a trend in display devices, in which the display image has become finer, and the pitch (interval) of the line pattern of the substrate has narrowed to 100 μm or less, for example. When line patterns having a narrow pitch are used, technical problems such as an increase in the connection resistance and a decrease in the insulating properties due to use of the anisotropic conductive film, become more significant.
As such, there is a continuing need in the art for a method of installing or mounting electronic components that do not have these limitations.
Accordingly, the present disclosure is directed to a display device, a display system, and a method of an installing electronic component. The disclosed method substantially obviates one or more of the technological problems due to limitations of the related art.
Additional features and embodiments of the present disclosure will be set forth in the description which follows, and will be apparent from the description. These and other technological improvements of the present disclosure will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
As embodied and broadly described herein, the present disclosure provides a method of installing an electronic component that includes disposing the electronic component having an electronic component side line connection part at a vertical end surface of a substrate stack including two substrates, a line between the two substrates, and a substrate side line connection part at an end of the line. The electronic component side line connection part faces the vertical end surface. The method further includes forming an auto-agglutination solder between the electronic component side line connection part and the substrate side line connection part. The auto-agglutination solder includes a thermosetting resin and a solder particle. Additionally, the method includes pressurizing the electronic component side line connection part and the substrate side line connection part by heating-up the auto-agglutination solder.
In another embodiment, the present disclosure is directed towards a display device that includes a substrate stack having two substrates, a line between the two substrates, and a substrate side line connection part at an end of the line. The display device further includes an electronic component having an electronic component side line connection part. The electronic component side line connection part faces a vertical end surface of the substrate stack. Additionally, the display device includes a junction part that electrically joins the vertical end surface and the electronic component. The junction part includes a solder junction part between the substrate side line connection part and the electronic component side line connection part. The junction part also includes a resin junction part at a region outside the solder junction part that adheres the vertical end surface and the electronic component.
In another embodiment, the present disclosure is directed towards a display system that includes a first display device, a second display device adjacent to the first display device along a first direction, and a third display device adjacent to the first display device along a second direction. At least one of the first, second, and third display devices includes: a substrate stack having two substrates, a line between the two substrates and a substrate side line connection part at an end of the line; an electronic component having an electronic component side line connection part, the electronic component side line connection part facing a vertical end surface of the substrate stack; and a junction part that electrically joins the vertical end surface and the electronic component. The junction part includes a solder junction part between the substrate side line connection part and the electronic component side line connection part. The junction part also includes a resin junction part at a region outside the solder junction part that adheres the vertical end surface and the electronic component.
The foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed.
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Reference will now be made in detail to the disclosed embodiments, examples of which are illustrated in the accompanying drawings.
Referring to
The display panel 110 as the liquid crystal panel includes a first substrate (a substrate) 111, a second substrate (a substrate) 112 facing the first substrate (111) and a liquid crystal layer (not shown) between the first and second substrates 111 and 112.
Each of the first and second substrates 111 and 112 may be one of a glass substrate, a resin substrate and a print substrate.
Although not shown, on at least one of the first and second substrates 111 and 112 (e.g., the first substrate 111), a plurality of line part (a line) 113 (which includes a signal line including a data line and a gate line), a thin film transistor, and so on, are formed. The liquid crystal layer is driven by the line part 113 such that the display device 100A provides an image. The line part 113 may have a single-layered structure formed of a low resistance conductive material, e.g., aluminum (Al) or copper (Cu). Alternatively, the line part 113 may have a multi-layered structure including a first layer formed of a lower resistance conductive material, e.g., Al or Cu and a second layer formed of a conductive material, e.g., chrome (Cr), molybdenum (Mo) or titanium (Ti).
An end 113e of each line part 113 is a drawout part of the line part 113. The end 113e has a single-layered structure formed of a conductive material that is capable of forming an electrical junction with the solder. The conductive material for the end 113e of the line part 113 may be one of tin (Sn), lead (Pb), zinc (Zn), silver (Ag) and copper (Cu). Alternatively, the end 113e of the line part 113 may have a multi-layered structure including a first layer of the above conductive material and a second layer formed of Cr, Mo or Ti.
In the display panel 110, the end surface 111s of the first substrate 111 and the end surface 112s of the second substrate 112 are disposed on the same plane. At the end of the display panel 110, a vertical end surface 110s, which is perpendicular to a display surface 110f, is formed (or defined) by the end surface 111s of the first substrate 111 and the end surface 112s of the second substrate 112.
In the vertical end surface 110s of the display panel 110, the electronic component 130 is installed. As shown in
As shown in
In some embodiments, the connection pad 200 may be formed from a paste or a nano-ink of Ag or Cu by a screen printing process, a mesh-mask printing process or an ink-jet process. For example, the connection pad 200 may have a width of about 10 to 100 nm, a length of about 0.1 to 1 mm and a thickness of about 10 to 1000 nm.
As shown in
For example, ‘Reflow Self Assembly Anisotropic Conductive Paste Epowell AP series’ (SEKISUI CHEMICAL CO., LTD) or ‘Low-Temperature-Curable conductive’ (Hitachi Chemical Co., Ltd.) may be used as the auto-agglutination solder 140.
The junction of the electronic component 130 to the connection pad 200 at the vertical end surface 110s of the display panel 110 is made using the auto-agglutination solder 140. In some embodiments, the auto-agglutination solder 140 is coated on the vertical end surface 110s of the display panel 110. For example, the auto-agglutination solder 140 may be coated by a screen printing process, a mesh-mask printing process, or an ink-jet process.
After coating the auto-agglutination solder 140, the electronic component 130 is positionally-aligned and adhered to the vertical end surface 110s of the display panel 110. Next, using the thermo-compressing device employed in the junction process with the anisotropic conductive film (ACF), the electronic component 130, where the connection electrode 133 is formed, is compressed to the vertical end surface 110s of the display device 110, where the connection pad 200 is formed. As a result, a pre-determined pressure and a pre-determined temperature are applied to the auto-agglutination solder 140 during a pre-determined period of time. For example, the pre-determined pressure may be applied to the auto-agglutination solder 140 under the temperature of 150° C. for 15 minutes.
As shown in
The auto-agglutination solder 140 is cooled after the thermo-compressing process such that the junction of the electronic component 130 to the vertical end surface 110s of the display panel 110 is completed.
The connection pad 200 at the vertical end surface 110s of the display panel 110 and the connection electrode 133 on the line substrate 131 of the electronic component 130 are metallically bonded by the solder metal H of the auto-agglutination solder 140 such that the connection pad 200 and the connection electrode 133 are electrically connected. In addition, the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component 130 are mechanically attached (or bonded) by the metal bond by the solder metal H and the adhesion by the insulating resin P.
The mechanical junction between the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component by the solder metal H and the insulating resin P may have a tensile strength being equal to or greater than about 500 g/cm.
For example, the solder metal H between the connection pad 200 and the connection electrode 133 may have a thickness being equal to less than about 20 μm.
A pitch of the connection pad 200 (e.g., a distance between adjacent connection pads) and a pitch of the connection electrode 133 (e.g., a distance between adjacent connection electrodes) may be about 10 to 100 μm, respectively.
As shown in
As mentioned above, the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component 130 such that a width “w” of the bezel can be reduced. Namely, a narrow bezel display device 100A is provided.
In addition, a plurality of display devices 100A of the narrow bezel are arranged to form a display system 1. In the display system 1, the plurality of display devices 100A are adjacently arranged along a vertical direction and a horizontal direction. In the display system 1, an image is displayed at a display region “A” formed by the plurality of display device 100A.
Since the display system 1 includes the narrow bezel display devices 100A, a gap between adjacent display devices 100A is reduced such that a high quality image is provided at the display region “A.”
An installation method of the electronic component 130 of the present disclosure includes disposing the connection electrode 133 of the electronic component to face the vertical end surface 110s of the display panel 110, including the connection pad 200 at the end 113e of the line part 113 between the first substrate 111 and the second substrate 112. The installation method further includes interposing (or coating) the auto-agglutination solder 140, which includes the thermosetting resin 140a and the solder particle 140b, between the connection electrode 133 and the connection pad 200. Additionally, the installation method includes pressurizing the connection pad 133 to the connection pad 200 by heating-up the auto-agglutination solder 140.
According to the installation method of the electronic component 130 of the present disclosure, the solder metal H, which is created by the aggregation of the solder particles 140b, is formed between the connection electrode 133 and the connection pad 200. In comparison to use of ACF, the amount of the conductive particles between the connection electrode 133 and the connection pad 200 is increased such that the increase of the contact (or connection) resistance between the connection electrode 133 and the connection pad 200 is prevented.
In addition, the vertical end surface 110s of the display panel 110 and the electronic component 130 are mechanically attached (or bonded) by the metal bond of the solder metal H of the solder particle 140b and by the adhesion of the insulating resin P of the thermosetting resin 140b, such that the electronic component 130 and the display device 110 are securely junctioned.
Moreover, in the junction structure of the electronic component 130, the display panel 110, the display device 100A, and the display system 1, there is an junction part “J” that electrically joins the connection pad 200 at the vertical end surface 110s of the display panel 110 (which includes the first substrate 111, the second substrate 112, and the connection pad 200 at the end 113e of the line part 113 between the first and second substrates 111 and 112) with the electronic component 130 (which includes the connection electrode 133 facing the vertical end surface 110s of the display panel 110). The junction part “J” includes the solder metal “H” between the connection pad 200 and the connection electrode 133 and the insulating resin “P” attaching (adhering) the vertical end surface 110s and the electronic component 130 in a region outside the solder metal “H.”
In the present disclosure, the electronic component 130 is securely combined (junctioned or connected) to the vertical end surface 110s of the display panel 110, and the electric connection property is increased such that the increase of the connection resistance (contact resistance) is prevented.
Referring to
The display panel 110 as the liquid crystal panel includes a first substrate (a substrate) 111, a second substrate (a substrate) 112 facing the first substrate (111), and a liquid crystal layer (not shown) between the first and second substrates 111 and 112.
Each of the first and second substrates 111 and 112 may be one of a glass substrate, a resin substrate, and a print substrate.
Although not shown, on at least one of the first and second substrates 111 and 112 (e.g., the first substrate 111), a plurality of line part (a line) 113, which includes a signal line including a data line and a gate line, a thin film transistor, and so on, are formed. The liquid crystal layer is driven by the line part 113 such that the display device 100A provides an image. The line part 113 may have a single-layered structure formed of a low resistance conductive material, e.g., aluminum (Al) or copper (Cu). Alternatively, the line part 113 may have a multi-layered structure including a first layer formed of a lower resistance conductive material, e.g., Al or Cu and a second layer formed of a conductive material, e.g., chrome (Cr), molybdenum (Mo) or titanium (Ti).
An end 113e of each line part 113 is a drawout part of the line part 113 and has a single-layered structure formed of a conductive material that is capable of forming the electrical junction with the solder. The conductive material for the end 113e of the line part 113 may be one of tin (Sn), lead (Pb), zinc (Zn), silver (Ag) and copper (Cu). Alternatively, the end 113e of the line part 113 may have a multi-layered structure including a first layer of the above conductive material and a second layer formed of Cr, Mo or Ti.
In the display panel 110, the end surface 111s of the first substrate 111 and the end surface 112s of the second substrate 112 are disposed on the same plane. At the end of the display panel 110, a vertical end surface 110s, which is perpendicular to a display surface 110f, is formed (or defined) by the end surface 111s of the first substrate 111 and the end surface 112s of the second substrate 112.
At the vertical end surface 110s of the display panel 110, an end part 113s of the line part 113 (a substrate side line connection part) is disposed on the same plane with the end surface 111s of the first substrate 111 and the end surface 112s of the second substrate 112 such that the end part 113s of the line part 113 is exposed.
At the vertical end surface 110s of the display panel 110, the electronic component 130 is installed. The electronic component 130 may include a line substrate (a film substrate) 131 as a film type and a chip component 132, e.g., a large scale integration (LSI), installed (or arranged) on a surface 131f of the line substrate 131. For example, the electronic component 130 may be a chip on film (COF). On the surface 131f of the line substrate 131, a plurality of connection electrodes (an electronic component side line connection part) 133, which are respectively junctioned with the line parts 113 of the display panel 110, are formed. The connection electrode 133 may be formed of a conductive material, e.g., Sn, Pb, Zn, Ag or Cu, that is capable of junctioning with the solder. A vertical length (length) of the connection electrode 133 along a direction from the first substrate 111 to the second substrate 112 (or the second substrate 112 to the first substrate 111) is larger than that of the substrate side line connection part (e.g., the end part of the line part 113) 113s.
The electronic component 130 is solder-junctioned to the end part (e.g., the substrate side line connection part) 113s of the line part 113, which is exposed at the vertical end surface 110s of the display panel 110, by an auto-agglutination solder 140. As shown in
For example, ‘Reflow Self Assembly Anisotropic Conductive Paste Epowell AP series’ (SEKISUI CHEMICAL CO., LTD) or ‘Low-Temperature-Curable conductive’ (Hitachi Chemical Co., Ltd.) may be used as the auto-agglutination solder 140.
The junction of the electronic component 130 to the end part (the substrate side line connection part) 113s at the vertical end surface 110s of the display panel 110 is made using the auto-agglutination solder 140. In some embodiments, the auto-agglutination solder 140 is coated on the vertical end surface 110s of the display panel 110. For example, the auto-agglutination solder 140 of the paste phase may be coated by a screen printing process, a mesh-mask printing process, or an ink-jet process.
After coating the auto-agglutination solder 140, the electronic component 130 is positionally-aligned and adhered to the vertical end surface 110s of the display panel 110. Next, using the thermo-compressing device used in the junction process with the anisotropic conductive film (ACF), a pre-determined pressure and a pre-determined temperature are applied to the auto-agglutination solder 140 during a pre-determined period of time. For example, the pre-determined pressure may be applied to the auto-agglutination solder 140 under the temperature of 150° C. for 15 minutes.
As shown in
The auto-agglutination solder 140 is cooled after the thermo-compressing process such that the junction of the electronic component 130 to the vertical end surface 110s of the display panel 110 is completed.
The end part 113s of the line part 113, which is exposed at the vertical end surface 110s of the display panel 110, and the connection electrode 133 on the line substrate 131 of the electronic component 130, are metallically bonded by the solder metal H of the auto-agglutination solder 140 such that they are electrically connected.
In addition, the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component 130 are mechanically attached (or bonded) by the metal bond of the solder metal H and by the adhesion of the insulating resin P.
The mechanical junction between the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component, by the solder metal H and the insulating resin P, may have a tensile strength that is equal to or greater than about 500 g/cm.
For example, the solder metal H between the end part 113s and the connection electrode 133 may have a thickness that is equal to less than about 20 μm.
A pitch of the end part 113s and a pitch of the connection electrode 133 may be about 10 to 100 μm, respectively.
A bezel 150, which forms an outer case of the display device 100B, is installed at a periphery of the display panel 110 where the electronic component 130 is installed. For example, the bezel 150 may include a side plate part 150a at an outer side of the vertical end surface 110s of the display panel 110 and a front plate part 150b extending from the side plate part 150a toward a center of the display panel 110 and covering a front edge of the display surface 110f of the display panel 110. The electronic component 130 is accommodated in a space between the side plate part 150a of the bezel 150 and the vertical end surface 110s of the display panel 110.
As mentioned above, the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component 130 such that a width “w” of the bezel can be reduced. Namely, a narrow bezel display device 100B is provided.
In addition, a plurality of display devices 100B of the narrow bezel are arranged to form a display system 1, as shown in
Since the display system 1 includes the narrow bezel display devices 100B, a gap between adjacent display devices 100B is reduced such that a high quality image is provided at the display region “A.”
The installation method of the electronic component 130 of the present disclosure includes disposing the connection electrode 133 of the electronic component to face the vertical end surface 110s of the display panel 110 including the line part 113 between the first substrate 111 and the second substrate 112. The installation method further includes interposing (or coating) the auto-agglutination solder 140, which includes the thermosetting resin 140a and the solder particle 140b, between the connection electrode 133 and the end part 113s of the line part 113. Additionally, the installation method includes pressurizing the connection pad 133 to the end part 113s by heating-up the auto-agglutination solder 140.
According to the installation method of the electronic component 130 of the present disclosure, the solder metal H, which is created by aggregation of the solder particles 140b, is formed between the connection electrode 133 and the end part 113s of the line part 113. In comparison to the use of ACF film, the amount of the conductive particles between the connection electrode 133 and the end part 113s is increased such that the increase of the contact (or connection) resistance between the connection electrode 133 and the end part 113s is prevented.
In addition, the vertical end surface 110s of the display panel 110 and the electronic component 130 are mechanically attached (or bonded) by the metal bond of the solder metal H of the solder particle 140b and by the adhesion of the insulating resin P of the thermosetting resin 140a, such that the electronic component 130 and the display device 110 is securely junctioned.
Moreover, since the end part 113s of the line part 113, which is exposed at a space between the first and second substrates 111 and 112, is defined as the substrate side line connection part, the connection part 200 is not required. Accordingly, the process of forming the connection pad 200 is omitted such that the production efficiency is increased and the production cost is decreased.
Further, in the junction structure of the electronic component 130, the display panel 110, the display device 100B and the display system 1, there is an junction part “J” that electrically joins the connection pad 200 at the vertical end surface 110s of the display panel 110 (which includes the first substrate 111, the second substrate 112, and the line part 113 at the end 113e of the line part 113 between the first and second substrates 111 and 112) with the electronic component 130 (which includes the connection electrode 133 facing the vertical end surface 110s of the display panel 110). The junction part “J” includes the solder metal “H” between the connection pad 200 and the connection electrode 133 and the insulating resin “P” attaching (adhering) the vertical end surface 110s and the electronic component 130 in a region outside the solder metal “H.”
In the present disclosure, the electronic component 130 is securely combined (junctioned or connected) to the vertical end surface 110s of the display panel 110, and the electric connection property is increased such that the increase of the connection resistance (contact resistance) is prevented.
As shown in
At the vertical end surface 110s of the display panel 110, an end part 113s of the line part 113 is disposed on the same plane with the end surface 111s of the first substrate 111 and the end surface 112s of the second substrate 112, such that the end part 113s of the line part 113 is exposed.
At the vertical end surface 110s of the display panel 110, the electronic component 130 is installed. As shown in
On the surface 131f of the line substrate 131, a plurality of connection electrodes 133L, which are respectively junctioned with the line parts 113 of the display panel 110, are formed. The connection electrode 133L may be formed of a conductive material, e.g., Sn, Pb, Zn, Ag or Cu, that is capable of junctioning with the solder.
A vertical length (length) of the connection electrode 133L along a direction from the first substrate 111 to the second substrate 112 (or the second substrate 112 to the first substrate 111) is larger than that of the substrate side line connection part 113s. The length L1 of the connection electrode 133L is larger than the length L0 of the connection electrode 133 in the first embodiment. In addition, the length L1 of the connection electrode 133L may be larger than the length of the connection pad 200 (of
The length L0 of the connection electrode 133 is a designed value. Based on the amount of the solder particle 140b in the auto-agglutination solder 140, a thickness (designed value) of the solder metal H after soldering is finished. The length L0 is designed such that the solder metal H, which is formed by melting and aggregation of the solder particle 140b, is formed throughout an entire of the connection electrode 133.
On the other hand, the length L1 of the connection electrode 133L is larger than the length L0 of the connection electrode 133, for example, by 30%.
The connection electrode 133L of the electronic component 130 is solder-junctioned to the end part 113s of the line part 113, which is exposed at the vertical end surface 110s of the display panel 110, by using the auto-agglutination solder 140.
The end part 113s of the line part 113 in the display panel 110 and the connection electrode 133L of the electronic component 130 are solder functioned by the solder metal H formed from the solder particle 140b, which is melted and aggregated. In addition, in a region outside the solder metal “H” and at a space between the line substrate 131 of the electronic component 130 and the vertical end surface 110s of the display panel 110, the melted thermosetting resin 140a gathers together such that the insulating resin “P” from the thermosetting resin 140a is formed.
The end part 113s of the line part 113, which is exposed at the vertical end surface 110s of the display panel 110, and the connection electrode 133L on the line substrate 131 of the electronic component 130, are selectively and metallically bonded by the solder metal H of the auto-agglutination solder 140 to be electrically connected. In addition, the vertical end surface 110s of the display panel 110 and the line substrate 131 of the electronic component 130 are mechanically attached (or bonded) by the metal bond of the solder metal H and by the adhesion of the insulating resin P.
As shown in
As shown in
In the installation method of the electronic component 130, the connection electrode 133L has the length that is larger than the reference length L0, which is designed based on the amount of the solder particle 140b required for soldering of the connection electrode 133L and the end part 113s and the gap (e.g., the thickness of the solder metal “H”) between the connection electrode 133L and the end part 113s, of the connection electrode 133 of the second embodiment.
Accordingly, even if the over-pressure is applied to the vertical end surface 110s of the display panel 110 and the electronic component 130 or the amount of the auto-agglutination solder 140 is excessive, the protrusion of the auto-agglutination solder 140 beyond the connection electrode 133L is prevented such that the electrical short between adjacent connection electrodes 133L by the auto-agglutination solder 140 is prevented.
In addition, similar to the second embodiment, the connection electrode 133L of the electronic component 130 and the end part 113s of the line part 113 is soldered by aggregation of the solder particles 140b of the auto-agglutination solder 140. As a result, in comparison to ACF, the amount of the conductive particles between the connection electrode 133L of the electronic component 130 and the end part 113s of the line part 113 is increased such that the increase of the contact (or connection) resistance between the connection electrode 133L of the electronic component 130 and the end part 113s of the line part 113 is prevented.
Moreover, the electronic component 130 and the vertical end surface 110s of the display panel 110 are mechanically attached (or bonded) by the metal bond of the solder metal H of the solder particle 140b and by the adhesion of the insulating resin P of the thermosetting resin 140a, such that the electronic component 130 and the display device 110 is securely junctioned.
The installation method of the electronic component 130 and the junction structure of the electronic component 130 may be applied to various electronic devices beside the display device 100A to 100C.
In addition, the display device 100A to 100C may be an organic light emitting diode display device or a plasma display device as well as the LCD device.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit or scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims and their equivalents.
The various embodiments described above can be combined to provide further embodiments.
These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016-189587 | Sep 2016 | JP | national |
The present application is a divisional of U.S. patent application Ser. No. 15/717,760 filed on Sep. 27, 2017, which claims the benefit of Japanese Patent Application No. 2016-189587 filed in Japan on Sep. 28, 2016, which applications are herein incorporated by reference in their entireties.
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| Number | Date | Country | |
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| 20190391435 A1 | Dec 2019 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15717760 | Sep 2017 | US |
| Child | 16563465 | US |
