WO2015065117A1 - Élément de dissipation de chaleur et terminal portable comportant ce dernier - Google Patents

Élément de dissipation de chaleur et terminal portable comportant ce dernier Download PDF

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Publication number
WO2015065117A1
WO2015065117A1 PCT/KR2014/010387 KR2014010387W WO2015065117A1 WO 2015065117 A1 WO2015065117 A1 WO 2015065117A1 KR 2014010387 W KR2014010387 W KR 2014010387W WO 2015065117 A1 WO2015065117 A1 WO 2015065117A1
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WO
WIPO (PCT)
Prior art keywords
heat
heat dissipation
dissipation sheet
punching
layer
Prior art date
Application number
PCT/KR2014/010387
Other languages
English (en)
Korean (ko)
Inventor
황승재
Original Assignee
주식회사 아모그린텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 아모그린텍 filed Critical 주식회사 아모그린텍
Priority to US15/029,070 priority Critical patent/US9729207B2/en
Priority to CN201480057186.2A priority patent/CN105830548B/zh
Priority claimed from KR1020140149709A external-priority patent/KR101675868B1/ko
Publication of WO2015065117A1 publication Critical patent/WO2015065117A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
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    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
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    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
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    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1698—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B32B2262/0238—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/00—Properties of the layers or laminate
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/306—Resistant to heat
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    • B32B2307/00—Properties of the layers or laminate
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    • B32B2307/752—Corrosion inhibitor
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/04—Details of telephonic subscriber devices including near field communication means, e.g. RFID

Definitions

  • the present invention relates to a heat dissipation member, and more particularly, a heat dissipation member capable of dissipating and blocking heat, and efficiently dissipates and insulates heat generated at a hot spot of a portable terminal to provide internal components of the portable terminal.
  • the present invention relates to a heat dissipation member capable of minimizing a thermal effect applied and preventing leakage of heat generated from a hot spot to the outside of a portable terminal, and a portable terminal having the same.
  • the portable terminal in order to maximize the portability and convenience of the user, the portable terminal is required to be miniaturized and lightweight, and components integrated in smaller and smaller spaces are mounted for high performance. Accordingly, the components used in the portable terminal have a high heat generation temperature due to high performance, and this increased heat temperature affects adjacent components, causing a problem of degrading the performance of the portable terminal.
  • Korean Patent Publication No. 10-1134880 discloses a portable terminal having a thermal insulation film composed of a thermal insulation film disposed on the front of the LCD, so that the heat generated from the portable terminal is transferred to the user's face through the LCD. There is an advantage that can be prevented.
  • a heat insulating film has a problem in that its configuration is not specific and its heat insulating performance is not known, and thus the heat problem generated in a recent high performance portable terminal cannot be solved.
  • the present inventors continue to study heat dissipation member technology that can improve heat dissipation and heat insulation by dispersing and blocking heat generated in a hot spot of a portable terminal, thereby sequentially dissipating heat and heat.
  • the present invention is more economical, usable and competitive.
  • the present invention has been made in view of the above, the object of the present invention is to dissipate and block the heat generated in the hot spot (hot spot) of the portable terminal with a heat dissipation member to perform heat dissipation and heat insulation, inside the portable terminal It is to provide a heat dissipation member and a portable terminal having the same to minimize the thermal effect applied to the components, and to block the heat generated from the hot spot to the outside.
  • Another object of the present invention is to provide a passage for passing a wireless signal for communication in the heat dissipation sheet, to minimize the interference when performing a communication function such as NFC (Near Field Communication) of the portable terminal to smoothly perform the communication function of the portable terminal It is to provide a heat dissipation member and a portable terminal having the same.
  • a communication function such as NFC (Near Field Communication) of the portable terminal
  • Another object of the present invention is to include a nanofiber web or non-woven fabric arranged in a three-dimensional network structure in the heat dissipation sheet, which can improve the thermal insulation performance with nano-sized micro-pores or non-woven fabric of a large thermal barrier ability nanofiber web
  • a heat dissipation member and a portable terminal having the same are provided.
  • the heat dissipation sheet to dissipate the heat transfer to the heat dissipation, and to block and insulate the heat transfer; And a passage formed in the heat dissipation sheet and configured to pass a communication radio signal, wherein the passage provides a heat dissipation member including at least one punching area passing through the heat dissipation sheet.
  • the heat dissipation sheet to dissipate the heat transfer to the heat dissipation, and to block the heat transfer heat insulation; And a passage formed in the heat dissipation sheet and configured to pass a communication radio signal, wherein the passage comprises at least one punching area passing through the heat dissipation sheet, wherein the heat dissipation sheet is configured to spread heat in a horizontal direction.
  • Diffusion layer A first adhesive layer laminated on one surface of the heat diffusion layer; A second adhesive layer laminated on the other surface of the heat diffusion layer; A heat insulation layer laminated on the first adhesive layer to block heat from being transferred in a vertical direction; And a protective cover layer laminated on the heat insulating layer to protect the heat insulating layer.
  • the heat dissipation sheet to dissipate the heat transferred by the heat dissipation, and to block and insulate the heat transferred; And a passage formed in the heat dissipation sheet and configured to pass a communication radio signal, wherein the heat dissipation sheet is formed in an unopened region, first to fourth punching regions, and inside the first to fourth punching regions. ), Wherein the passage is the first to fourth punching area, with the unconnected area and a bridge connecting the island area between the first and fourth punching areas from a neighboring punching area. It is provided with a heat dissipation member spaced apart.
  • the terminal body performing a portable terminal function; A rear cover detachable from the rear of the terminal body; And a heat dissipation member installed inside the rear cover, wherein the heat dissipation member includes: a heat dissipation sheet for dissipating and dissipating the transferred heat; And a passage formed in the heat dissipation sheet and configured to pass a communication radio signal, wherein the passage provides at least one punching area passing through the heat dissipation sheet.
  • the terminal body performing a portable terminal function; A rear cover detachable from the rear of the terminal body; And a heat dissipation member installed inside the rear cover, wherein the heat dissipation member includes: a heat dissipation sheet for dissipating and dissipating the transferred heat; And a passage formed in the heat dissipation sheet, wherein a passage through which a communication radio signal passes, wherein the passage comprises at least one punching area passing through the heat dissipation sheet, wherein the heat dissipation sheet is configured to spread heat in a horizontal direction. Diffusion layer; A heat insulation layer laminated on one surface of the heat diffusion layer to block heat from being transferred in a vertical direction; And an adhesive layer laminated on the other surface of the heat diffusion layer.
  • a heat dissipation member having a function of dissipating and blocking heat to perform heat dissipation and heat insulation, and dissipates heat generated from a hot spot of the portable terminal to internal components of the portable terminal.
  • the communication function of the portable terminal is smoothly minimized by minimizing an obstacle when performing a communication function such as NFC (Near Field Communication) of the portable terminal.
  • NFC Near Field Communication
  • the present invention has a heat diffusion layer for diffusing heat generated from the heat generating parts of the portable terminal, and a heat insulating layer for blocking heat generated from the heat generating parts from being transferred to other parts, thereby simultaneously performing a heat spreading function and a heat insulating function.
  • the anti-oxidation layer is provided on the surface of the heat diffusion layer of the heat dissipation sheet, thereby preventing the heat diffusion layer from being oxidized.
  • a conductive adhesive layer is formed on one surface of the heat diffusion layer of the heat dissipation sheet, and the heat transferred to the heat diffusion layer is first diffused by the heat diffusion layer, and heat is transferred to another heat diffusion member attached to the conductive adhesion layer to the secondary. Diffusion can improve heat dissipation performance.
  • the color of the cover and the color exposed to the outside of the heat dissipation sheet may be the same.
  • FIG. 1 is a conceptual cross-sectional view for explaining a heat radiation member according to an embodiment of the present invention
  • FIG. 2 is a conceptual diagram illustrating a communication function of a portable terminal having a heat dissipation member according to an embodiment of the present invention
  • FIG. 3 is a schematic plan view for explaining a heat radiation sheet of a heat radiation member according to an embodiment of the present invention
  • FIG. 4 is a conceptual plan view for explaining the heat flow in the heat radiation sheet of the heat radiation member according to an embodiment of the present invention
  • FIG. 5 is a photograph of a state in which the NFC antenna is installed on the back of the mobile phone terminal according to an embodiment of the present invention
  • FIG. 6 is a photograph of a state in which a heat dissipation member is installed on a rear cover of a mobile phone terminal according to an embodiment of the present invention
  • FIG. 7 is a conceptual cross-sectional view for explaining a state in which the NFC antenna and the NFC chip of the mobile phone terminal according to an embodiment of the present invention electrically connected,
  • FIG. 9 is a view for explaining the conditions of the heat dissipation sheets on which the test of FIG. 8 is performed.
  • FIG. 10 is a cross-sectional view of a heat radiation sheet according to a first embodiment of the present invention.
  • FIG. 11 is an enlarged photograph of a heat insulation layer according to a first embodiment of the present invention.
  • FIG. 12 is a cross-sectional view of a heat radiation sheet according to a second embodiment of the present invention.
  • FIG. 13 is a cross-sectional view of a heat radiation sheet according to a third embodiment of the present invention.
  • FIG. 14 is a cross-sectional view of a heat radiation sheet according to a fourth embodiment of the present invention.
  • FIG. 15 is a cross-sectional view of a heat radiation sheet according to a fifth embodiment of the present invention.
  • FIG. 16 is a cross-sectional view of a heat radiation sheet according to a sixth embodiment of the present invention.
  • FIG. 17 is a plan view of a cover with a heat radiation sheet according to a sixth embodiment of the present invention.
  • FIG. 18 is a configuration diagram of an electrospinning apparatus for manufacturing a heat dissipation sheet of the present invention
  • FIG. 19 is a process flowchart showing a manufacturing process according to an example of the heat dissipation sheet of the present invention.
  • 21 is a process flowchart showing a manufacturing process according to another example of the heat dissipation sheet of the present invention.
  • Figure 23 is a graph comparing the heat radiation characteristics of the heat radiation sheet according to an embodiment of the present invention over time
  • 25 is a graph comparing the heat dissipation characteristics of the pure copper plate of the heat dissipation sheet according to the present invention and the copper plate coated with Ni for oxidation on the copper plate,
  • FIG. 26 is a time-based thermal image of a pure copper plate of a heat dissipation sheet according to the present invention and a copper plate coated with Ni for oxidation on the copper plate.
  • the heat dissipation member is a heat dissipation sheet 510 to dissipate the heat transferred by the heat dissipation, and to block and insulate the heat transferred; And a passage formed in the heat dissipation sheet 510 and passing a communication wireless signal, wherein the passage includes at least one punching area 520 passing through the heat dissipation sheet 510.
  • the heat dissipation is defined by the same term as the heat diffusion described below, and the punching area 520 is formed by punching at least one of the edge area, the center area, and the mixed area of the heat dissipation sheet 510. Can be.
  • Such a heat dissipation member according to an embodiment of the present invention can be mounted on the portable terminal, when the heat dissipation sheet is mounted on the portable terminal, it is possible to perform the heat dissipation and heat insulation function by dispersing and blocking the heat generated in the portable terminal. Therefore, the heat generated from the hot spot of the portable terminal is dispersed to minimize the thermal effect applied to the internal components of the portable terminal, and the heat generated from the hot spot is prevented from leaking to the outside to grip the portable terminal. This minimizes heat transfer to the user who is doing the job.
  • the heat dissipation member according to an embodiment of the present invention when installed in the portable terminal, it may be an obstacle when performing a communication function such as NFC (Near Field Communication) of the portable terminal, the heat dissipation sheet 510 By providing a passage through which the communication radio signal passes, there is an advantage that can smoothly perform the communication function of the portable terminal.
  • NFC Near Field Communication
  • the portable terminal includes a terminal body 550 performing a portable terminal function; And a rear cover 530 detachable to the rear of the terminal body 550.
  • the rear surface of the terminal body 550 has an area in which a battery, a memory chip, etc. may be mounted, and to facilitate the replacement thereof, the rear cover 530 may be disposed on the rear surface of the terminal body 550 for aesthetics of the portable terminal. It is detachably installed.
  • the rear cover 530 may be referred to as a battery cover.
  • the terminal body 550 includes high-speed and high-performance chips, and a hot spot region 551 is formed in which heat is concentrated in a local region when the chips are operated. Since the heat dissipation sheet 510 of the heat dissipation member is mounted inside the rear cover 530, the heat dissipation sheet 510 when the rear cover 530 is coupled with the terminal body 550 (in the direction of the arrow in FIG. 1). Is in close contact with the hot spot area 551, and receives heat generated in the hot spot area 551 as it is to perform a distribution and blocking function.
  • the communication antenna provided in the terminal body 550 may smoothly transmit and receive a wireless signal with an external device through the punching area 520 of the heat dissipation sheet 510.
  • the NFC (Near Field Communication) antenna 560 of FIG. 1 may smoothly transmit and receive a wireless signal with an external device through the punching area 520 of the heat dissipation sheet 510.
  • the communication function of the portable terminal can be applied in various ways, but preferably, the communication function of the NFC (Near Field Communication) method is provided in the portable terminal.
  • NFC Near Field Communication
  • NFC communication is a method of contactless short-range wireless communication using the 13.56MHz frequency band, and is a communication standard developed for transmitting data between terminals at a close distance of 10 cm.
  • NFC is widely used not only for payment, but also for transmitting goods information, travel information for visitors, and traffic control locks in supermarkets and general stores.
  • the portable terminal 500 includes an NFC chip 561 to enable NFC communication, and the NFC chip 561 is connected to another terminal and reader based on the NFC communication standard through the NFC antenna 560. It is possible to exchange data at a short distance with the external device 600, such as. At this time, the portable terminal 500 transmits and receives a wireless signal through the NFC method, and performs data communication with the external device 600.
  • the heat dissipation sheet 510 of the heat dissipation member according to the embodiment of the present invention has a flat plate shape and is a passage through which a communication wireless signal passes, and at least one punching area penetrating the heat dissipation sheet 510. 521,522,523,524 are formed.
  • the punching area of the heat dissipation sheet 510 may be formed of the first to fourth punching areas 521, 522, 523, and 524 that are punched in a '-' shape.
  • the first to fourth punching regions 521, 522, 523 and 524 form a rectangular island region 525 inside the first to fourth punching regions 521, 522, 523 and 524, and the non-punched region 526 and the island region are formed.
  • the first to fourth punching regions 521, 522, 523, 524 are spaced apart from the neighboring punching region with the bridges 527a, 527b, 527c, and 527d connecting the 525 therebetween.
  • the width of the bridges 527a, 527b, 527c, and 527d is preferably 5 mm or less, and in 5 mm or more, the communication distance is shortened and the NFC standard is not satisfied.
  • At least one slot may be further formed to open one punching area of the first to fourth punching areas 521, 522, 523, and 524 to increase the transmission and reception strength of the wireless signal with the NFC antenna. That is, in FIG. 3, the slot 528 for opening the second punching region 522 to the outside may be formed to open the loop of the heat dissipation sheet 510, thereby improving inductive coupling. have.
  • the island region 525 has an area 529 to which the NFC antenna is in contact, and the island area 525 has a larger size than the area 529 to which the NFC antenna is in contact.
  • the distance from the edge of the area 529 to which the NFC antenna is in contact with the edge of the island area 525 is defined as an offset (P), and 1.5 mm or more is preferable, and the communication distance is 1.5 mm or more. Shortens and does not satisfy the NFC standard.
  • the uninjured area 526 of the heat dissipation sheet 510 of the heat dissipation member according to the embodiment of the present invention contacts the hot spot area 551, and heat generated in the hot spot area 551 is Through the bridges 527a, 527b, 527c, and 527d of the heat dissipation sheet 510, the heat dissipation sheet 510 is dispersed in the entire area of the heat dissipation sheet 510.
  • a battery 700 is mounted on a rear surface 501 of a mobile phone terminal according to an embodiment of the present invention, and an NFC antenna 560 is preferably installed on the battery 700.
  • the heat dissipation sheet 510 of the heat dissipation member is attached to the rear cover of the mobile phone terminal.
  • a groove 552 for mounting the battery 700 is formed in the rear of the terminal body 550 of the mobile phone terminal, and the battery 700 is inserted into and fixed to the groove 552. .
  • the NFC antenna 560 is attached to the battery 700, and an NFC chip (not shown) is built in the terminal body 550. Since the battery 700 may be detached from the groove 552, the wires for directly connecting the NFC antenna 560 and the NFC chip may not be installed.
  • the first contact 591 is installed in the NFC antenna 560
  • the second contact 592 connected to the NFC chip is installed at the rear of the terminal body 550
  • the rear cover 530 is provided.
  • the wiring line 593 connecting the first and second contacts 591 and 592 is provided. That is, when the rear cover 530 is separated from the rear of the terminal body 550, the wiring line 593 is also separated from the first and second contacts 591 and 592, and the first and second contacts 591 and 592 are electrically connected to each other.
  • the wiring line 593 electrically connects the first and second contacts 591 and 592, so that the NFC antenna 560 and the NFC chip are It is electrically connected.
  • FIG. 8 is a table showing data of a test result of a communication distance and an authentication item of a heat dissipation sheet applied to a mobile phone terminal according to an embodiment of the present invention
  • FIG. 9 illustrates conditions of the heat dissipation sheets performing the test of FIG. 8. It is a figure for following.
  • the widths of the bridges are 5 mm and 10 mm, and one offset (the distance from one edge of the area where the NFC antenna is contacted to one edge of the island area) is 1 mm and 1.5 mm, and both offsets (NFC antenna is
  • the heat dissipation sheets (Sample # 1, Sample # 2, Sample) of the heat dissipation member according to the embodiment of the present invention which are 2 mm and 3 mm, respectively, the distances from the edges of the contacted areas to the edges of the islands are summed on both sides.
  • Data of the communication distance and the authentication items in the portable terminal equipped with # 3) (one slot) and the portable terminal without the heat dissipation sheet are shown in FIG. 8.
  • the heat dissipation sheet of the heat dissipation member according to the embodiment of the present invention satisfies the communication distance and the authentication item when the bridge width is 5 mm or less and one offset is 1.5 mm or more.
  • FIG. 10 is a cross-sectional view of the heat radiation sheet according to the first embodiment of the present invention.
  • the heat dissipation sheet 100 is stacked on one surface of the heat diffusion layer 20 and the heat diffusion layer 20 for diffusing heat in a horizontal direction, and heat is transferred in a vertical direction. It includes a heat insulating layer 10 to block the thing, and an adhesive layer 30 laminated on the other surface of the heat diffusion layer 20.
  • the heat diffusion layer 20 is formed of a metal having thermal conductivity.
  • a metal having thermal conductivity For example, Al, Ni, Cu, Ag, and an alloy thereof may be used.
  • Cu having excellent thermal conductivity may be used.
  • the heat diffusion layer 20 rapidly diffuses heat generated in the heat generating part 200 in the horizontal direction to prevent local high heat from being generated so that the heat generating part 200 and the other part 300 are damaged by high heat. To prevent them.
  • the heat diffusion layer 20 may be applied to any material capable of rapidly diffusing heat in the horizontal direction in addition to the thermally conductive metal.
  • graphite can also be applied as a heat diffusion layer.
  • the heat insulation layer 10 is formed of a porous thin film that can block heat transmitted in the vertical direction.
  • the thermal insulation layer 10 may be, for example, a nano-web form having a plurality of pores, a nonwoven fabric having a plurality of pores, a polyether sulfone (PES), etc. by an electrospinning method. Any material can be applied as long as possible.
  • the pore size of the heat insulation layer 10 is several tens nm to about 10 micrometers.
  • the spinning solution is prepared by mixing a polymer material and a solvent capable of electrospinning and having excellent heat resistance at a predetermined ratio, and electrospinning the spinning solution.
  • the nanofibers 14 are formed, and the nanofibers 14 accumulate to form a nanofiber web having a plurality of pores 12.
  • the diameter of the nanofibers 14 is smaller, the specific surface area of the nanofibers is increased, and the air trapping ability of the nanofiber web having a plurality of micropores increases, thereby improving thermal insulation performance. Accordingly, the diameter of the nanofibers 14 is in the range of 0.1-5 um, preferably 0.3-3 um, and the thickness of the heat insulation layer 10 is 5-30 ⁇ m, preferably 10-25 um. In addition, the porosity of the pores 12 formed in the heat insulating layer 10 preferably has a range of 50 to 80%.
  • air is known as an excellent heat insulating material having a low thermal conductivity, but is not used as a heat insulating material by convection.
  • the heat insulating layer 10 applied to the present invention is configured in the form of a nano web having a plurality of micro pores, air is not convection in each micro pores and trapped (contained), thereby providing excellent heat blocking property of the air itself. It can represent.
  • the radiation method applied to the present invention is a general electrospinning, air electrospinning (AES: Air-Electrospinning), electrospray (electrospray), electrobrown spinning, centrifugal electrospinning Flash-electrospinning can be used.
  • AES Air-Electrospinning
  • electrospray electrospray
  • electrobrown spinning electrobrown spinning
  • centrifugal electrospinning Flash-electrospinning Flash-electrospinning Flash-electrospinning Flash-electrospinning Flash-electrospinning can be used.
  • the polymeric material used to make the insulating layer 10 may be, for example, a low polymer polyurethane, a high polymer polyurethane, a polystylene (PS), a polyvinylalchol (PVA), a polymethyl methacrylate (PMMA), or a polylactic acid (PLA).
  • PS polymer polyurethane
  • PVA polyvinylalchol
  • PMMA polymethyl methacrylate
  • PLA polylactic acid
  • PEO polyethyleneoxide
  • PVAc polyvinylacetate
  • PAA polyacrylic acid
  • PCL polycaprolactone
  • PAN polyacrylonitrile
  • PMMA polymethyl methacrylate
  • PVP polyvinylpyrrolidone
  • PVC polyvinylpyrrolidone
  • PVC polyvinylchloride
  • Nylon polycarbonate
  • PC polyetherimide
  • PVDF polyvinylidene fluoride
  • PEI polyetherimide
  • PES polyesthersulphone
  • Solvents are dimethyl (dimethyl acetamide), DMF (N, N-dimethylformamide), NMP (N-methyl-2-pyrrolidinone), DMSO (dimethyl sulfoxide), THF (tetra-hydrofuran), DMAc (di-methylacetamide), EC ( At least one selected from the group consisting of ethylene carbonate, DEC (diethyl carbonate), DMC (dimethyl carbonate), EMC (ethyl methyl carbonate), PC (propylene carbonate), water, acetic acid, and acetone Can be.
  • the thickness is determined according to the radiation amount of the spinning solution. Therefore, there is an advantage that it is easy to make the thickness of the heat insulating layer 10 to the desired thickness.
  • the heat insulating layer 10 is formed in the form of a nanofiber web in which the nanofibers 14 are accumulated by the spinning method, the insulating layer 10 may be formed in a form having a plurality of pores 12 without a separate process, and the radiation amount of the spinning solution It is also possible to adjust the size of the pores. Therefore, the number of pores 12 can be made finely large, the heat shielding performance is excellent, and thus the heat insulating performance can be improved.
  • the heat insulating performance is improved, and as the thickness of the heat diffusion layer 20 is thick, the heat spreading performance may be improved. Therefore, by adjusting the thickness of the heat insulating layer 10 and the heat diffusion layer 20 according to the installation position to achieve the best performance.
  • the adhesive layer 30 is formed of an adhesive material having thermal conductivity so that heat generated from the heat generating part 200 can be quickly transferred to the heat diffusion layer 20.
  • the adhesive layer may be a conventional thermal conductive adhesive tape or a thermal conductive adhesive sheet, it may be formed in the form of inorganic porous nano web by the electrospinning method.
  • the thermally conductive and electrically conductive adhesive material may be thermally conductive metals such as Ni, Cu, and Ag, carbon black, carbon nanotubes, and graphene having excellent thermal conductivity.
  • thermally conductive metals such as Ni, Cu, and Ag, carbon black, carbon nanotubes, and graphene having excellent thermal conductivity.
  • Graphene conductive polymer
  • PDOT conductive polymer
  • the pressure-sensitive adhesive and the solvent is mixed to make an adhesive material having a viscosity suitable for electrospinning, and the electrospinning of this adhesive material to form a nanofiber, the nanofiber is accumulated It is formed in the form of a non-porous nanofiber web (nano web).
  • the adhesive layer 30 may be formed in the same electrospinning method as the method of forming the heat insulating layer 10, and the thickness of the adhesive layer 30 may be freely made because the thickness is determined according to the radiation amount of the adhesive material.
  • the adhesive layer 30 is also laminated to the heat insulating layer 10 may be applied to the structure provided with an adhesive layer on both sides of the heat radiation sheet.
  • the heat dissipation sheet according to the first embodiment prevents the heat generated from the hot spot of the portable terminal from rapidly spreading in the horizontal direction by the heat diffusion layer 20 to become locally high temperature, and the heat insulation layer 10 is vertical.
  • the directional insulation function prevents heat generated from the hot spot from being transferred to the outside of the portable terminal.
  • FIG. 12 is a cross-sectional view of a heat radiation sheet according to a second embodiment of the present invention.
  • the heat dissipation sheet according to the second embodiment includes a heat diffusion layer 20 for diffusing heat in a horizontal direction, a heat insulating layer 10 laminated on one surface of the heat diffusion layer 20 to block heat from being transferred in a vertical direction, and heat
  • the adhesive layer 30 stacked on the other surface of the diffusion layer 20 and the protective cover layer 40 stacked on one surface of the heat insulating layer 10 to protect the heat insulating layer are included.
  • the protective cover layer 40 is attached to the heat insulating layer 10 to seal one surface of the heat insulating layer so that the pores can act as an air chamber and to prevent external impact or other foreign substances from entering the pores of the heat insulating layer 10. Play a role.
  • the protective cover layer 40 may be a resin material such as PET film, it is possible to apply a fiber material in addition to the resin material.
  • FIG. 13 is a cross-sectional view of a heat radiation sheet according to a third embodiment of the present invention.
  • the heat dissipation sheet according to the third embodiment includes a heat spreading layer 20 for diffusing heat in a horizontal direction, a first adhesive layer 50 stacked on one surface of the heat spreading layer 20, and a second stacking layer on the other surface of the heat spreading layer.
  • the adhesive layer 60 is laminated on the first adhesive layer 50 to prevent heat from being transferred in the vertical direction, and the insulating layer 10 is laminated on one surface of the thermal insulation layer 10 to protect the thermal insulation layer 10.
  • Protective cover layer 40 is laminated on the first adhesive layer 50 to prevent heat from being transferred in the vertical direction, and the insulating layer 10 is laminated on one surface of the thermal insulation layer 10 to protect the thermal insulation layer 10.
  • the first adhesive layer 50 serves to attach the heat insulation layer 10 to the heat diffusion layer 20, and may be formed as an inorganic porous nano web type manufactured by an electrospinning method.
  • the second adhesive layer 60 serves to attach the heat dissipation sheet 100 to the component, which is the same as the adhesive layer 30 described in the first embodiment.
  • FIG. 14 is a cross-sectional view of a heat radiation sheet according to a fourth embodiment of the present invention.
  • the heat dissipation sheet according to the fourth embodiment includes a heat spreading layer 20 for diffusing heat in a horizontal direction, a heat insulating layer 10 stacked on one surface of the heat spreading layer 20 to block heat from being transferred in a vertical direction, and heat An adhesive layer 30 stacked on the other surface of the diffusion layer 20 and an anti-oxidation film 110 formed on the surface of the heat diffusion layer to prevent the heat diffusion layer from being oxidized.
  • the anti-oxidation layer 110 prevents the heat diffusion layer from being oxidized when an oxidizable material such as Cu is used as the heat diffusion layer, and may be formed by coating an anti-oxidation material on the surface of the heat diffusion layer 20.
  • the method of oxidizing the surface of ()) to form an oxide film can be used.
  • the antioxidant may be used Ni, specifically, is prepared by coating Ni to a thickness of about 0.1 ⁇ 0.3 ⁇ m.
  • the heat dissipation sheet according to the fourth embodiment prevents the heat diffusion layer from being oxidized by forming the anti-oxidation film 110 on the surface of the heat diffusion layer 20, thereby preventing the heat diffusion layer from degrading its performance. .
  • FIG. 15 is a cross-sectional view of a heat radiation sheet according to a fifth embodiment of the present invention.
  • the heat dissipation sheet according to the fifth embodiment has a heat diffusion layer 20 for diffusing heat in a horizontal direction, a heat insulating layer 10 for laminating on one surface of the heat diffusion layer 20 to block heat from being transferred in a vertical direction, and a heat insulating layer.
  • the adhesive layer 30 is laminated on one surface of the 10, and the electrically conductive adhesive layer 120 is laminated on one surface of the heat diffusion layer 20 to absorb electromagnetic waves.
  • the electrically conductive adhesive layer 120 may be formed by an electrospinning apparatus in the same manner as forming the heat insulating layer 10, and may attach the electrically conductive adhesive film to one surface of the heat diffusion layer 20.
  • the electrically conductive adhesive layer 120 is formed by an electrospinning apparatus, an electrospinable polymer material, an electrically conductive adhesive material, and a solvent are mixed at a predetermined ratio to form a spinning solution, and the spinning solution is electrospun to form a spinning solution. Fibers are formed, and the nanofibers are accumulated to form an inorganic-pore type nanofiber web.
  • the heat dissipation sheet according to the fourth embodiment may serve as an electromagnetic shielding role by absorbing electromagnetic waves by providing the electrically conductive adhesive layer 120.
  • FIG. 16 is a cross-sectional view of a heat radiation sheet according to a sixth embodiment of the present invention.
  • the heat dissipation sheet according to the sixth exemplary embodiment includes a heat diffusion layer 20 for diffusing heat in a horizontal direction, a heat insulating layer 10 laminated on one surface of the heat diffusion layer 20, and blocking heat transfer in a vertical direction, and a heat insulating layer.
  • the adhesive layer 30 stacked on one surface of the substrate 10 and the color cover layer 130 stacked on the surface of the heat diffusion layer 20 and having various colors are included.
  • a color cover layer 130 having various colors may be provided on the portion exposed to the outside of the heat dissipation sheet to beautify the design.
  • the color cover layer 130 may be formed by coating a color color on the surface of the heat diffusion layer 20, and a single-sided adhesive tape having color color on one surface may be used.
  • the color cover layer 130 forms the color cover layer 130 in the same color as that of the cover 102 such as white when the color of the cover 102 is white and black when it is black.
  • a method of manufacturing the heat dissipation sheet of the present invention is as follows.
  • the collector 78 when the collector 78 is driven, the metal plate 82 wound around the metal plate roll 80 is supplied to the collector 78 (S10).
  • the conductive adhesive material is made of nanofibers 14 in the first radiation nozzle 74 to radiate to the surface of the metal plate 82. . Then, the nanofibers 14 are accumulated on the surface of the metal plate 82 to form the first adhesive layer 50 (S20).
  • the air injector 62 installed in the first radiation nozzle 74 the air is injected to the nanofibers 14 so that the nano-fibers 14 do not fly and the To be collected and integrated on the surface.
  • the metal plate 82 on which the first adhesive layer 50 is stacked is moved to the lower side of the second radiation nozzle 76, and the spinning solution is nanofibers in the second radiation nozzle 76. Made and radiated to the surface of the first adhesive layer 50. Then, the nanofibers are accumulated on the surface of the first adhesive layer 50 to form a heat insulating layer 10 having a plurality of pores (S30).
  • stacked on the surface of the metal plate is pressed while passing through the pressure roller, becomes a predetermined thickness, and is wound up by the sheet roll 88 (S40).
  • the second adhesive layer may be manufactured separately and attached to the other surface of the metal plate, and may be formed in the form of a nano web by spinning the nanofibers on the other surface of the metal plate using the electrospinning apparatus described above.
  • FIG. 20 is a configuration diagram showing another embodiment of the process of manufacturing a heat dissipation sheet of the present invention.
  • the heat dissipation sheet manufacturing process according to another embodiment may be manufactured by thermal lamination after separately manufacturing the metal plate 21, the heat insulation layer 10, and the adhesive layer 30 constituting the heat diffusion layer 20.
  • the metal plate 21 is supplied from the metal plate roll 210, and the first pressure roller after laminating the hot melt film 250 supplied from the hot melt film roll 220 on the surface of the metal plate 21. Pass 310. Then, the hot melt film 250 is thermally laminated on the surface of the metal plate 21.
  • the pressure-sensitive adhesive layer 30 supplied from the pressure-sensitive adhesive layer roll 240 is laminated on the surface of the heat insulation layer 10 and then passed through the third pressure roller 330. Then, the adhesive layer 30 is thermally laminated on the surface of the heat insulating layer 10.
  • Figure 21 is a block diagram showing another embodiment of the process for producing a heat radiation sheet of the present invention.
  • Heat dissipation sheet manufacturing process is a cold lamination method that can reduce the cost compared to the thermal paper described in the other embodiments above.
  • the metal plate 21 is supplied from the metal plate roll 210, and the acrylic pressure sensitive adhesive 260 supplied from the acrylic pressure sensitive adhesive roll 270 is stacked on the surface of the metal plate 21, and the first pressure roller 410 is stacked. It is cold laminated while passing.
  • the first pressing roller 410 is a roller that does not apply heat but only pressurized is used. Then, the release film 440 attached to the acrylic adhesive 260 is removed.
  • the metal plate 21 and the heat insulating layer 10 are formed by the acrylic pressure sensitive adhesive. Cold laminated.
  • the pressure-sensitive adhesive layer 30 supplied from the pressure-sensitive adhesive layer roll 240 is laminated on the surface of the heat insulation layer 10 and then passed through the third pressure roller 330. Then, the adhesive layer 30 is cold laminated on the surface of the heat insulation layer 10.
  • Figure 22 is a photograph observing whether or not the thermal characteristics of the heat dissipation sheet according to an embodiment of the present invention according to time
  • Figure 23 is a graph comparing the heat dissipation characteristics of the heat dissipation sheet according to an embodiment of the present invention.
  • Table 1 shows the change in surface resistance with time, and it can be seen that as time passes, the surface resistance becomes 12.1 ⁇ / sq after 72 hours from the initial 6.7 ⁇ / sq.
  • the antioxidant layer is formed on the surface of the heat diffusion layer described in the fourth embodiment, the oxidation of the copper plate can be prevented.
  • FIG. 25 is a graph comparing the heat dissipation characteristics of the pure copper plate of the heat dissipation sheet according to the present invention and the copper plate coated with Ni for oxidation on the copper plate, and FIG. This is a thermal image of Ni-coated copper plate over time.
  • the present invention provides a heat dissipation member that can effectively dissipate and insulate heat generated at a hot spot of a portable terminal to minimize thermal effects applied to internal components of the portable terminal.

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  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

La présente invention se rapporte à un élément de dissipation de chaleur et à un terminal portable comportant ce dernier. L'élément de dissipation de chaleur comprend : une feuille de dissipation de chaleur destinée à disperser et à dissiper la chaleur transférée ainsi qu'à bloquer et à isoler la chaleur transférée ; et un canal qui est formé sur la feuille de dissipation de chaleur et à travers lequel passe un signal de communication sans fil, le canal étant formé par au moins une zone de découpage à l'emporte-pièce passant à travers la feuille de dissipation de chaleur.
PCT/KR2014/010387 2013-10-31 2014-10-31 Élément de dissipation de chaleur et terminal portable comportant ce dernier WO2015065117A1 (fr)

Priority Applications (2)

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US15/029,070 US9729207B2 (en) 2013-10-31 2014-10-31 Heat dissipation member and portable terminal having same
CN201480057186.2A CN105830548B (zh) 2013-10-31 2014-10-31 散热部件及具有其的便携式终端

Applications Claiming Priority (4)

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KR10-2013-0131033 2013-10-31
KR20130131033 2013-10-31
KR10-2014-0149709 2014-10-31
KR1020140149709A KR101675868B1 (ko) 2013-10-31 2014-10-31 방열 부재 및 그를 구비한 휴대용 단말기

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EP3657517A4 (fr) * 2017-07-17 2021-03-24 Amogreentech Co., Ltd. Dispositif d'émission d'énergie sans fil destiné à un véhicule
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CN111019548A (zh) * 2019-12-31 2020-04-17 苏州佳值电子工业有限公司 一种封边设计分段式散热膜
US20220400576A1 (en) * 2020-09-28 2022-12-15 Google Llc Thermal-control system of a media-streaming device and associated media-streaming devices
US11980010B2 (en) * 2020-09-28 2024-05-07 Google Llc Thermal-control system of a media-streaming device and associated media-streaming devices

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