CN105792616B - A kind of touch panel unit and mobile terminal - Google Patents
A kind of touch panel unit and mobile terminal Download PDFInfo
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- CN105792616B CN105792616B CN201610281601.3A CN201610281601A CN105792616B CN 105792616 B CN105792616 B CN 105792616B CN 201610281601 A CN201610281601 A CN 201610281601A CN 105792616 B CN105792616 B CN 105792616B
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a kind of touch panel unit and mobile terminals.Touch panel unit includes touch screen and heat radiator part, and display screen is provided at the medial surface of touch screen, and light source is provided on display screen, and the inner surface of touch screen includes hot zone；Hot zone includes the light source region being oppositely arranged with light source, and the peripheral region adjacent with light source region；Light source region and/or peripheral region are provided with heat radiator part, heat radiator part includes the mixing material of the material properties with heat absorption, heat accumulation and heat sinking function, mixing material is made of heat absorption heat accumulating and heat conduction and heat radiation material mixing, heat conduction and heat radiation material is used to give the heat transfer on light source to heat absorption heat accumulating, heat absorption heat accumulating stores the heat of heat conduction and heat radiation material conduction for absorbing and storing the heat on light source.It is absorbed heat using heat of the mixing material to light source, heat accumulation and heat dissipation avoid causing discomfort to the ear of user, while improving the reliability that equipment uses so as to reduce the temperature of touch screen.
Description
Technical Field
The invention relates to the field of electronic equipment, in particular to a touch screen assembly and a mobile terminal.
Background
The configuration of the existing mobile terminals such as smart phones and tablet computers is higher and higher, the power consumption of internal electronic components is higher and higher, and the heat productivity of the internal electronic components is correspondingly higher and higher. If the display screen in the mobile terminal, its light source in a poor light can produce great heat, and the display screen links to each other with the touch-sensitive screen, and on the heat of light source in a poor light can transmit the touch-sensitive screen, and the heat can concentrate on earphone hole position department, mobile terminal in the communication process, mobile terminal's top and user's ear direct contact, if calorific capacity is too big, can appear scalding the problem of ear, seriously influence the user and use.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a touch screen assembly and a mobile terminal, which can reduce the heat transferred to the touch screen.
In order to solve the technical problem, in one aspect, an embodiment of the present invention provides a touch screen assembly, including a touch screen and a heat absorption and dissipation member, wherein a display screen is disposed on an inner side surface of the touch screen, a light source is disposed on the display screen, and an inner surface of the touch screen includes a heating area; the heating area comprises a light source area arranged opposite to the light source and a peripheral area adjacent to the light source area; the light source region and/or the peripheral region is provided with the heat absorption radiating piece, the heat absorption radiating piece is including the combined material of the material attribute that has heat absorption, heat-retaining and heat dissipation function, the combined material is mixed to be constituteed by heat absorption heat-retaining material and heat conduction radiating material, heat conduction radiating material be used for with heat transfer on the light source gives heat absorption heat-retaining material, heat absorption heat-retaining material is used for absorbing and storing heat on the light source, stores simultaneously the heat that heat conduction radiating material conducts.
The touch screen is provided with a receiver hole, the inner surface of the touch screen further comprises a display area, the display area is opposite to the display area of the display screen, and the heating area is located between the receiver hole and the display area.
Wherein the peripheral region is located between the light source region and the earpiece hole.
The peripheral area and the light source area are both strip-shaped and are parallel to each other; or,
the peripheral area surrounds the light source area to form an annular area; or,
the peripheral area surrounds the light source area to form an inverted U-shaped area.
The touch screen comprises a touch screen body and a hardware support, the hardware support is fixed on the touch screen body and close to the display screen on the surface, and the heat absorption heat dissipation piece is arranged on the hardware support.
The mass ratio of the heat absorption heat storage material to the heat conduction and radiation material is 1: 1.
the heat absorption and heat storage material comprises silicon dioxide and polyethylene glycol, wherein the mass ratio of the silicon dioxide to the polyethylene glycol is 1: 1-1: 9.
the heat absorption and heat storage material is composed of a plurality of microcapsules which take the silicon dioxide as capsule walls and the polyethylene glycol as capsule cores.
Wherein, the heat conduction and dissipation material is graphite or metal.
The heat absorption heat dissipation piece further comprises a titanate coupling agent and an adhesive layer, the mixed material and the titanate coupling agent are mixed to form a sheet material, the adhesive layer is laminated and attached to the sheet material, and the sheet material is adhered to the touch screen through the adhesive layer.
The heat absorption heat dissipation piece further comprises a dilution solvent and a bonding solution, and the mixed material, the dilution solvent and the bonding solution are mixed and coated on the touch screen.
The heat absorption heat dissipation piece further comprises a substrate and an adhesive layer, the mixed material is coated on the substrate, the adhesive layer is laminated on the mixed material, and the substrate coated with the mixed material is bonded on the touch screen through the adhesive layer.
The touch screen assembly further comprises a protective film, the protective film is arranged on the heat absorption heat dissipation piece, and the protective film is located on one side far away from the touch screen.
Wherein, the protection film is made of heat conduction and dissipation materials.
Wherein, be provided with the heat conduction hole on the display screen.
In another aspect, the present invention provides a mobile terminal including the touch screen assembly as described above.
According to the touch screen assembly and the mobile terminal provided by the invention, the heat absorption and dissipation part is arranged in the heating area of the touch screen, the heat absorption and dissipation part comprises the mixed material with the functions of heat absorption, heat storage and heat dissipation, the mixed material is formed by mixing the heat absorption and heat storage material and the heat conduction and dissipation material, the heat absorption and heat storage material is used for absorbing and storing heat on the light source, meanwhile, the heat conduction and dissipation material is used for accelerating the absorption and dissipation of the heat of the light source by the heat absorption and heat storage material, the heat absorption, heat storage and heat dissipation of the heat of the light source are carried out by utilizing the mixed material, the temperature of the touch screen can be reduced, meanwhile, the overhigh temperature of the touch screen can be avoided through the effects of heat storage and.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an exploded view of a touch screen assembly provided in accordance with a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the heat absorbing heat sink and touch screen of FIG. 1;
fig. 3 is a schematic view illustrating a structure of a heat-absorbing heat sink of a mobile terminal according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a touch panel and a heat-absorbing heat sink according to a second embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a touch panel and a heat-absorbing heat sink according to a third embodiment of the present invention;
fig. 6 is a schematic cross-sectional view illustrating a touch panel and a heat-absorbing heat sink according to a fourth embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The mobile terminal related to the embodiment of the present invention may be any device having communication and storage functions, for example: the system comprises intelligent equipment with a network function, such as a tablet Computer, a mobile phone, an electronic reader, a remote controller, a Personal Computer (PC), a notebook Computer, vehicle-mounted equipment, a network television, wearable equipment and the like.
Referring to fig. 1-2, a mobile terminal provided for a preferred embodiment of the present invention includes a touch screen assembly. The touch screen component comprises a touch screen 1 and a heat absorption and dissipation member 2, a display screen 3 is arranged on the inner side surface of the touch screen 1, a light source 31 is arranged on the display screen 3, and the inner surface of the touch screen 1 comprises a heating area 10; the heat generating region 10 includes a light source region 11 disposed opposite to the light source 31, and a peripheral region 12 adjacent to the light source region 11; the light source region 11 and/or the peripheral region 12 are provided with heat absorption and dissipation members 2, the touch screen 1 is provided with the heat absorption and dissipation members 2, and the heat absorption and dissipation members 2 comprise a mixed material having material properties with heat absorption, heat storage and heat dissipation functions.
In the present embodiment, the light source 31 of the display 3 is preferably an LED. The heat absorption and dissipation member 2 is disposed on both the light source region 11 and the peripheral region 12 of the touch panel 1. In the specific implementation process, one heat absorption heat dissipation member 2 is connected to the light source region 11 and the peripheral region 12, and the whole heating region 10 is covered by one heat absorption heat dissipation member 2 so as to absorb, store and dissipate heat. The light source region 11 is a region facing the light source 31 of the display panel 3, and the heat of the light source 31 can be directly absorbed by the heat absorbing and dissipating member 2 on the light source region 11. The peripheral area 12 is disposed adjacent to the light source area 11, and the heat absorbing and dissipating member 2 on the peripheral area 12 can absorb, store, and dissipate heat near the light source 31. The heat absorption heat dissipation part 2 can absorb heat transmitted from the main board of the mobile terminal, so that the normal operation of internal devices of the mobile terminal is protected, and the user experience is improved. Here, in other embodiments, the heat absorbing and dissipating member 2 may be provided only in the light source region 11, or the heat absorbing and dissipating member 2 may be provided only in the peripheral region 12, and the heat absorbing and dissipating member 2 may absorb heat generated by the light source 31 to prevent the heat from being transferred to the outer surface of the touch panel 1.
The touch screen 1 is provided with a receiver hole 19, the inner surface of the touch screen 1 further comprises a display area 13, the display area 13 is arranged opposite to the display area of the display screen 3, and the heating area 10 is located between the receiver hole 19 and the display area 13. The light source 31 of the display screen 3 is located between the receiver hole 19 and the display area 13, the heating area 10 is correspondingly located between the receiver hole 19 and the display area 13, and the heat-absorbing heat-dissipating member 2 is also correspondingly located between the receiver hole 19 and the display area 13, so that the heat-absorbing heat-dissipating member 2 is prevented from being located on the display area 13 to shield the display of the display screen 3, and the heat-absorbing heat-dissipating member 2 does not need to be processed into a transparent shape.
The peripheral area 12 is located between the light source area 11 and the earpiece hole 19, and during normal use, the peripheral area 12 is located above the light source area 11, and the heat absorbing and dissipating element 2 disposed on the peripheral area 12 may also be located above the light source 31, and since heat is diffused upward, the heat absorbing and dissipating element 2 disposed above the light source 31 may better absorb heat generated by the light source 31. In the present embodiment, the peripheral region 12 and the light source region 11 are both strip-shaped and parallel to each other, and the peripheral region 12 is located above the light source region 11 in normal use, however, in other embodiments, the peripheral region 12 may form a ring-shaped region around the light source region 11, or form an inverted U-shaped region around the light source region 11.
Touch-sensitive screen 1 includes touch-sensitive screen body and five metals support (not shown in the figure), the five metals support is fixed and is close to on the touch-sensitive screen body display screen 3 is on the surface, heat absorption heat dissipation piece 2 sets up on the five metals support. Utilize the five metals support, can make things convenient for the fixed connection between heat absorption radiating part 2 and the touch-sensitive screen 1.
The heat absorbing and dissipating member 2 includes a mixed material 20 having material properties of heat absorbing, heat storing, and heat dissipating functions. It is understood that the mixed material 20 is formed by mixing a heat-conducting and heat-dissipating material 21 and an endothermic heat storage material 22, the heat-conducting and heat-dissipating material 21 is used for transferring heat from the light source to the endothermic heat storage material 22, and the endothermic heat storage material 22 is used for absorbing and storing heat from the light source, and storing heat conducted by the heat-conducting and heat-dissipating material 21.
The hybrid material 20 is a material having material properties of heat absorption, heat storage, and heat dissipation functions. Preferably, the mass ratio of the heat absorption and storage material 22 to the heat conduction and dissipation material 21 is 1: 1. the heat absorption and storage are performed through the heat absorption and storage material 22 contained in the mixed material 20 in the heat absorption and dissipation member 2, so that the heat on the light source 31 can be absorbed and stored in the heat absorption and storage material 22 to reduce the temperature of the light source 31, and the heat can be prevented from being directly transferred to the touch screen 1 through the stored heat; the heat absorption of the heat absorption and storage material 22 to the light source 31 can be accelerated by conducting heat transfer and heat dissipation through the heat conduction and dissipation material 21 contained in the mixed material 20 in the heat absorption and dissipation member 2, and after the heat absorption and storage material 22 absorbs sufficient heat, the heat in the heat absorption and storage material 22 can be dissipated, so that the cooling effect of the light source 31 and the touch screen 1 is further enhanced.
The heat absorbing and storing material 22 is a material having material properties of heat absorbing and storing functions. The endothermic heat storage material 22 is for absorbing heat of the light source 31 and storing the absorbed heat in the endothermic heat storage material 22. Through set up heat absorption heat sink 2 in the light source 31 department at display screen 3, utilize the heat absorption heat-retaining material 22 of heat absorption heat sink 2 can absorb the heat and give off to the air after the heat-retaining to certain temperature, avoid on the direct transfer of the heat of light source 31 to touch-sensitive screen 1, avoid causing adverse effects such as discomfort to user's ear.
It is understood that the heat absorbing and storing material 22 can be a phase change material, which can change its physical properties with the temperature change and absorb a large amount of heat, the heat absorbing and storing material 22 gradually changes from one phase to another phase with the increase of the absorbed heat, the other phase is stably maintained after absorbing sufficient heat and no heat is absorbed, the absorbed heat carries away a part of latent heat with the phase change of the heat absorbing and storing material 22, and when there is no heat or the heat is low at the light source, the heat absorbing and storing material 22 dissipates heat and gradually returns to the original phase from the other phase with the decrease of the heat. The endothermic heat storage material 22 may be changed from a solid phase to a liquid phase or a liquid phase to a solid phase, or from a solid phase to a gas phase or a liquid phase to a solid phase, or from a liquid phase to a gas phase or a gas phase to a liquid phase.
The heat absorbing and dissipating member 2 may be disposed in the light source region 11 and the peripheral region 12, when the heat emitted from the light source 31 reaches a certain temperature, the heat absorbing and dissipating material 22 in the heat absorbing and dissipating member 2 absorbs and stores the heat of the light source 31, and particularly, the heat of the light source 31 and the heat near the light source 31 may be absorbed and stored, the heat absorbing and storing material 22 may absorb the heat of the light source 31 and store the heat in itself, the heat conducting and dissipating material 21 may accelerate heat transfer, and when the temperature of the light source 31 drops, the stored heat is dissipated into the air, thereby reducing the heat of the light source 31, and meanwhile, the heat is prevented from being transferred to the outer surface of the touch screen 1, and the reliability of the display screen 3 is.
The endothermic heat storage material 22 preferably includes, by mass ratio, 1: 1-1: 9 silicon dioxide and polyethylene glycol. The inventor finds out through a large number of experiments that the mass ratio of silicon dioxide to polyethylene glycol is 1: 1-1: 9 the organic-composite phase change material which can be prepared by mixing has proper phase change temperature, and can absorb the heat of the light source 31 in time, thereby further improving the reliability of the light source 31 and the mobile terminal. Specifically, the phase change temperature of the heat absorption and storage material 22 is 40 degrees, that is, after the temperature of the heat generated by the light source 31 reaches 40 degrees, the heat absorption and storage material 22 absorbs the heat through phase change, and takes away the heat of the light source 31 to cool the light source 31. Of course, in other embodiments, the heat absorbing and storing material 22 may also be an inorganic phase change material, or a composite phase change material.
Preferably, the endothermic heat storage material 22 is composed of a plurality of microcapsules with silica as the capsule wall and polyethylene glycol as the capsule core. The heat absorbing and storing material 22 with the micro-capsule structure can absorb and store heat of the light source 31, so as to achieve better heat dissipation performance. Specifically, polyethylene glycol is added into silica sol with a certain concentration, and CaCl is dripped after the polyethylene glycol is completely dissolved2A coagulant solution which causes the polyethylene glycol to undergo sol-gel reaction in the silica sol under strong agitationStanding to form three-dimensional network structure gel; and (3) drying the gel in an oven at 80 ℃ by blowing for 24-48 h, and cooling to room temperature to obtain a large amount of microcapsules which are generated under an alkaline condition by using the organosilicone compound, take the silica gel as capsule walls, and take the emulsified polyethylene glycol as capsule cores. Namely, in each microcapsule, the silicon dioxide is used as a capsule wall to wrap the polyethylene glycol used as a capsule core, so that the polyethylene glycol cannot leak in the process of solid phase-liquid phase and can be well wrapped by the silicon dioxide. The heat absorption and heat storage material 22 forming the microcapsule structure starts to absorb heat on the light source 31 after the temperature of the light source 31 reaches 40 ℃, and the capsule core gradually increases from a solid phase to a liquid phase along with the gradual increase of the heat, when the capsule core is converted into the liquid phase, the heat absorbed by the heat absorption and heat storage material 22 is saturated, the heat absorption is stopped, the temperature outside the light source 31 is gradually reduced to a preset temperature, the capsule core emits the absorbed heat to be transmitted to the air, the capsule core gradually converts from the liquid phase to the solid phase along with the gradual reduction of the heat of the capsule core, and the heat radiation performance and the reliability of the mobile terminal are improved through the cycle conversion from the solid phase to the liquid phase. Of course, in other embodiments, the heat absorbing and storing material 22 may have other structures, so that the heat absorbing and storing material 22 can cool the light source 31 by cyclic conversion from solid phase to gas phase.
The heat conductive and dissipating material 21 may be a material having good heat dissipation performance, such as graphite or metal. Among them, the heat conductive and dissipating material 21 is preferably graphite, which is soft and easy to process. The manufacturing process of the mixed material 20 specifically comprises the following steps: the heat absorption heat storage material 22 is smashed and strongly stirred to obtain powder, and the diameter of the powder is far larger than that of each microcapsule, so that the microcapsule structure in the heat absorption heat storage material 22 cannot be damaged, namely, the heat absorption heat storage function of the heat absorption heat storage material 22 cannot be influenced; and then the heat conduction and radiation material 21 crushed into powder is mixed with the heat absorption and storage material 22 crushed into powder to form the mixed material 20, so that the mixed material 20 has the functions of absorbing heat, storing heat and radiating heat.
As shown in fig. 2, for further improvement, the heat absorbing and dissipating member 2 further includes a titanate coupling agent 23 and a glue layer 24, the hybrid material 20 and the titanate coupling agent 23 are mixed to form a sheet material 25, the glue layer 24 is laminated on the sheet material 25, and the sheet material 25 is adhered to the touch screen 1 through the glue layer 24. In this embodiment, by arranging the sheet material 25 on the heat generating region 10 of the touch screen 1, the heat generated by the light source 31 is absorbed and stored by the heat absorbing and storing material 22, so that the heat is not transferred to the outer surface of the touch screen 1, and the influence on the ears and the face of the user is avoided.
The sheet material 25 is prepared by mixing the mixed material 20 and the titanate coupling agent 23, and the sheet material 25 is connected with the glue layer 24 in a laminating manner to form the heat absorption and heat dissipation piece 2, so that the heat absorption and heat dissipation piece 2 can be cut according to the shapes of the light source area 11 and the peripheral area 12, and further can be matched with the light source 31 in a better manner, the light source 31 can be subjected to heat absorption and heat storage well, the light source 31 is further cooled, the heat dissipation performance and the reliability of the mobile terminal are improved, and the sheet heat absorption and heat dissipation piece 2 is convenient to apply and can be directly adhered. And a heat insulation material can be arranged between the heat absorption and dissipation member 2 and the touch screen 1 to further prevent heat from being transferred to the touch screen 1.
In this embodiment, the heat absorbing and storing material 22 is crushed and strongly stirred to obtain powder, and since the diameter of the powder is much larger than the diameter of each microcapsule, the microcapsule structure in the heat absorbing and storing material 22 is not damaged, i.e. the heat absorbing and storing function of the heat absorbing and storing material 22 is not affected. The heat absorption and storage material 22 and the heat conduction and dissipation material 21 which are all in powder form are mixed to obtain a mixed material 20, a titanate coupling agent 23 is added into the mixed material 20 for hydrophobic modification to obtain an inorganic pseudo-organic composite shape-stabilized phase change material, the inorganic pseudo-organic composite shape-stabilized phase change material is tableted by a tablet machine to obtain a sheet material 25, and the sheet material 25 is laminated and connected with an upper adhesive layer 24 to form the heat absorption and dissipation member 2. It will be appreciated that the adhesive layer 24 may be a backing adhesive, a double-sided adhesive, a release film, or the like. The heat absorption heat sink 2 can be cut into a certain shape according to the shape of the light source 31 and the area corresponding to the area nearby the light source, and is attached to the touch screen 1, so that the functions of heat absorption, heat storage and heat dissipation are realized.
For further improvement, the mobile terminal further includes a protective film 26, the protective film 26 is disposed on the heat absorbing heat sink 2, and the protective film 26 is located on a side away from the touch screen 1. By providing the protective film 26 on the heat absorbing and dissipating member 2 to further protect the heat absorbing and dissipating member 2, the reliability of the touch panel 1 is further improved.
In the embodiment, the protection film 26 is polyethylene terephthalate (PET), which is laminated on the sheet material 25 and opposite to the adhesive layer 24, and the protection film 26 can further shape and protect the sheet material 25 from dust. Of course, in other embodiments, the material of the protection film 26 may be other, such as silica gel, graphite, etc.
The display screen 2 is provided with heat conducting holes (not shown in the figure). The heat conduction hole can be processed and formed through laser cutting, so that the heat conduction hole can achieve the effect of being invisible to naked eyes, and the appearance of the display screen 2 is not affected. The heat conduction hole can be arranged in the position corresponding to the heating area, and can also be arranged around the heating area, so that the heat of the light source is better transferred, and the heat dissipation performance of the mobile terminal is further improved.
As shown in fig. 3 and 4, a mobile terminal according to a second embodiment of the present invention has substantially the same basic structure as the mobile terminal according to the first embodiment of the present invention, and the touch panel 1 and the display panel 3 have the same structure as the first embodiment, except for the structure of the heat absorbing and dissipating member 2. The heat absorbing and dissipating member 2 in this embodiment includes a mixture, a diluent, and a bonding solution, and the mixture, the diluent, and the bonding solution are mixed to form the heat absorbing and dissipating member 2 and coated on the light source region 11 and the peripheral region 12 of the touch screen 1, so as to prevent heat from diffusing to the front surface of the touch screen 1.
Form heat absorption heat dissipation part 2 through mixing dilutent, bonding solution and combined material for heat absorption heat dissipation part 2 directly has adhesive force, need not to increase in addition again the glue film can coat on touch-sensitive screen 1's surface, thereby provides a heat absorption heat dissipation part 2 that uses comparatively conveniently.
In this embodiment, the heat absorbing and heat storing material is crushed and strongly stirred to obtain powder, and since the diameter of the powder is much larger than the diameter of each microcapsule, the microcapsule structure in the heat absorbing and heat storing material is not damaged, i.e. the heat absorbing and heat storing function of the heat absorbing and heat storing material 22 is not affected. The heat-conducting heat-dissipating material is also processed into powder and is mixed with the heat-absorbing heat-storing material to obtain a mixed material, a diluting solvent and a special bonding solution (such as methanol xylene, acrylic resin and the like) are added into the powder mixed material for mixing, so that the heat-absorbing heat-dissipating piece 2 has adhesive force, and the heat-absorbing heat-dissipating piece 2 is directly stacked into a certain thickness in a coating mode and attached to a heating area, thereby realizing the functions of heat absorption, heat storage and heat dissipation.
In the present embodiment, the heat absorbing and dissipating member 2 is directly coated to be stacked to a certain thickness and attached to the light source region 11 and the peripheral region 12 of the touch screen 1, so as to improve the heat absorbing and storing performance of the heat absorbing and dissipating member 2, fully absorb the heat of the light source, and prevent the heat from being transferred to the outer surface of the touch screen 1. A protective film may be further disposed on the surface of the heat absorption heat dissipation member 2 away from the touch screen 1, and the structure of the protective film is the same as that of the foregoing embodiment, and is not described herein again.
In the present embodiment, the heat absorbing and dissipating member 2 is coated on the light source region 11 and the peripheral region 12 of the touch panel, and here, in other embodiments, the heat absorbing and dissipating member 2 may be coated only on the light source region 11 or only on the peripheral region 12. The number of the heat absorbing and dissipating members 2 may be two and respectively coated on the light source region 11 and the peripheral region 12, or one heat absorbing and dissipating member 2 may entirely cover the light source region 11 and the peripheral region 12.
As shown in fig. 5, a mobile terminal according to a third embodiment of the present invention has substantially the same basic structure as the mobile terminal according to the first embodiment of the present invention, and the touch panel 1 and the display panel 3 have the same structure as the first embodiment, except for the structure of the heat absorbing and dissipating member 2. The heat absorbing and dissipating member 2 of the mobile terminal in this embodiment includes the hybrid material 20, the substrate 230, and the glue layer 240, the hybrid material 20 is coated on the substrate 230, and the hybrid material 20 may be coated on both surfaces of the substrate 230, or may be coated only on a single surface of the substrate 230. The adhesive layer 240 is laminated on the heat absorption and storage material 22, and the adhesive layer 240 is adhered on the light source region 11 and the peripheral region 12 of the touch screen 1.
The mixed material 20 is directly coated on the substrate 230 for forming, and then the adhesive layer 240 is arranged on the mixed material 20 to be adhered on the touch screen 1, so that tabletting by a tablet press is not needed, and the manufacturing is simple.
In this embodiment, the substrate 230 is polyethylene terephthalate (PET), the heat absorbing and storing material 22 and the heat conducting and dissipating material 21, which are both in powder form, are mixed to form the mixed material 20, the mixed material 20 is directly coated on the surface of one side of the substrate 230 for molding, the substrate with the mixed material 20 is bonded to the touch screen 1 through the adhesive layer 240, so as to realize the heat absorbing, storing and dissipating functions of the heat absorbing and dissipating member 2, and meanwhile, the substrate 230 may also form a protection film to protect the mixed material 20. Of course, in other embodiments, the mixture may be coated on both surfaces of the substrate 230, and then a protective film may be disposed on the mixture on one side, and the glue layer 240 may be disposed on the mixture on the other side. It is understood that the adhesive layer 240 may be a back adhesive, a double-sided adhesive, or the like.
In the present embodiment, the heat absorbing and dissipating member 2 is disposed on the light source region 11 and the peripheral region 12, and here, in other embodiments, the heat absorbing and dissipating member 2 may be disposed only on the light source region 11 or only on the peripheral region 12. The number of the heat absorbing and dissipating members 2 may be two and disposed in the light source region 11 and the peripheral region 12, respectively, or one heat absorbing and dissipating member 2 may cover the light source region 11 and the peripheral region 12 as a whole.
As shown in fig. 6, in a mobile terminal according to a fourth embodiment of the present invention, the touch screen 1 and the display screen 3 are the same as those in the first embodiment, and the heat-absorbing and dissipating member may be the same as any of the foregoing embodiments. In this embodiment, the touch screen assembly further includes a protection film 26, the protection film 26 is disposed on the heat-absorbing heat sink, and the protection film 26 is located on a side away from the touch screen. The protective film 26 can be made of heat-conducting and heat-dissipating materials such as graphite or metal, the materials of the protective film can be the same as those of the heat-conducting and heat-dissipating materials in the mixed material, and the protective film 26 made of the heat-conducting and heat-dissipating materials can be used for shaping the heat-absorbing and heat-dissipating piece and having a dustproof effect, so that the heat-absorbing and heat-dissipating capacity of the heat-absorbing and heat-dissipating piece can.
In the foregoing embodiments, the heat absorbing and dissipating member is directly connected to the touch screen, and in other embodiments, a heat insulating material may be disposed between the heat dissipating member and the touch screen to prevent heat from being transferred to the touch screen. According to the embodiment of the invention, the heat absorption and radiation piece is arranged at the position corresponding to the light source and the area nearby the position on the touch screen in the mobile terminal, so that the heat at the position of the light source can be absorbed and stored, and the heat transferred to the touch screen is reduced, thereby avoiding the problem of ear burning, avoiding adverse effects such as discomfort on the ears of a user and the like, and simultaneously improving the use reliability of the equipment.
In the foregoing embodiment, the mass ratio of the heat-absorbing heat-storage material to the heat-conducting heat-dissipating material is 1: 1, of course, in other embodiments, the mass ratio of the heat absorbing and storing material to the heat conducting and dissipating material can be adjusted as required.
According to the touch screen assembly and the mobile terminal provided by the invention, the heat absorption and dissipation piece is arranged on the touch screen and comprises the mixed material with the functions of heat absorption, heat storage and heat dissipation, the mixed material is formed by mixing the heat absorption and heat storage material and the heat conduction and dissipation material, the heat absorption and heat storage material is used for absorbing and storing heat on a light source of the display screen, meanwhile, the heat conduction and dissipation material is used for accelerating the absorption and dissipation of the heat absorption and heat storage material on the light source, and the heat absorption, heat storage and heat dissipation are carried out on the heat on the light source by utilizing the mixed material, so that the temperature of the shell can be reduced, the normal operation of the mobile terminal with the touch screen assembly is ensured, and the overhigh temperature of the. The heat absorption heat dissipation piece can also absorb heat transmitted from the mobile terminal mainboard, so that the normal operation of internal devices of the mobile terminal is protected, and the user experience is improved.
The mobile terminal provided by the invention is characterized in that silicon dioxide and polyethylene glycol are mixed according to the mass ratio of 1: 1-1: 9 the organic phase-change material which can be prepared by mixing has proper phase-change temperature, and can absorb the heat of the light source in time, thereby further improving the reliability of the mobile terminal.
The mobile terminal provided by the invention can better absorb and store heat for the light source by making the heat absorption and heat storage material into a micro-capsule structure, thereby achieving better heat dissipation performance.
The mobile terminal provided by the invention also optimizes the processing of the heat conduction and dissipation material by limiting the heat conduction and dissipation material to be a graphite material.
The above embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (14)
1. A touch screen assembly is characterized by comprising a touch screen and a heat absorption and dissipation piece, wherein a display screen is arranged on the inner side surface of the touch screen, a light source is arranged on the display screen, and the inner surface of the touch screen comprises a heating area; the heating area comprises a light source area arranged opposite to the light source and a peripheral area adjacent to the light source area; the light source region and/or the peripheral region is provided with the heat absorption radiating piece, the heat absorption radiating piece is including the combined material of the material attribute that has heat absorption, heat-retaining and heat dissipation function, the combined material is mixed to be constituteed by heat absorption heat-retaining material and heat conduction radiating material, heat conduction radiating material be used for with heat transfer on the light source gives heat absorption heat-retaining material, heat absorption heat-retaining material is used for absorbing and stores heat on the light source, stores simultaneously the heat that heat conduction radiating material conducts, heat absorption heat-retaining material includes silica and polyethylene glycol, the mass ratio of silica and polyethylene glycol is 1: 1-1: and 9, the heat absorption and heat storage material is composed of a plurality of microcapsules taking the silicon dioxide as capsule walls and the polyethylene glycol as capsule cores.
2. The touch screen assembly according to claim 1, wherein the touch screen is provided with a receiver hole, the inner surface of the touch screen further comprises a display area, the display area is arranged opposite to the display area of the display screen, and the heating area is located between the receiver hole and the display area.
3. The touch screen assembly of claim 2, wherein the peripheral region is located between the light source region and the earpiece hole.
4. The touch screen assembly of claim 1, wherein the peripheral region and the light source region are both strip-shaped and parallel to each other; or,
the peripheral area surrounds the light source area to form an annular area; or,
the peripheral area surrounds the light source area to form an inverted U-shaped area.
5. The touch screen assembly of claim 1, wherein the touch screen includes a touch screen body and a hardware support, the hardware support is fixed on the touch screen body near the surface of the display screen, and the heat-absorbing heat-dissipating member is disposed on the hardware support.
6. The touch screen assembly of claim 1, wherein the mass ratio of the heat absorbing and storing material to the heat conducting and dissipating material is 1: 1.
7. the touch screen assembly of claim 1, wherein the thermally conductive and heat dissipating material is graphite or metal.
8. The touch screen assembly of claim 1, wherein the heat sink further comprises a titanate coupling agent and a glue layer, wherein the hybrid material and the titanate coupling agent are mixed to form a sheet material, wherein the glue layer is laminated to the sheet material, and wherein the sheet material is adhered to the touch screen by the glue layer.
9. The touch screen assembly of claim 1, wherein the heat absorbing heat sink further comprises a diluent solvent and a bonding solution, and the hybrid material, the diluent solvent, and the bonding solution are mixed and coated on the touch screen.
10. The touch screen assembly of claim 1, wherein the heat sink further comprises a substrate and a glue layer, wherein the hybrid material is coated on the substrate, the glue layer is laminated to the hybrid material, and the substrate coated with the hybrid material is adhered to the touch screen by the glue layer.
11. The touch screen assembly of claim 1, further comprising a protective film disposed on the heat sink and on a side away from the touch screen.
12. The touch screen assembly of claim 11, wherein the protective film is a thermally conductive and heat sink material.
13. The touch screen assembly of claim 1, wherein the display screen has thermal vias disposed therein.
14. A mobile terminal, characterized in that it comprises a touch screen assembly according to any one of claims 1 to 13.
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| CN201610281601.3A CN105792616B (en) | 2016-04-29 | 2016-04-29 | A kind of touch panel unit and mobile terminal |
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| CN201610281601.3A CN105792616B (en) | 2016-04-29 | 2016-04-29 | A kind of touch panel unit and mobile terminal |
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| CN105792616B true CN105792616B (en) | 2019-02-05 |
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| CN106453702A (en) * | 2016-09-28 | 2017-02-22 | 努比亚技术有限公司 | Cover plate and smart phone |
| CN117042350A (en) * | 2023-07-07 | 2023-11-10 | 荣耀终端有限公司 | Shell assembly, processing method thereof and electronic equipment |
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Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
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