CN107390798B - Paper folding type mobile phone/computer integrated super-flexible equipment - Google Patents
Paper folding type mobile phone/computer integrated super-flexible equipment Download PDFInfo
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- CN107390798B CN107390798B CN201710784838.8A CN201710784838A CN107390798B CN 107390798 B CN107390798 B CN 107390798B CN 201710784838 A CN201710784838 A CN 201710784838A CN 107390798 B CN107390798 B CN 107390798B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
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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
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
- H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
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- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1241—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing
- H05K3/125—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by ink-jet printing or drawing by dispensing by ink-jet printing
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- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1283—After-treatment of the printed patterns, e.g. sintering or curing methods
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- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
Abstract
The invention provides paper folding type mobile phone/computer integrated super-flexible equipment, and relates to the technical field of super-flexible electronic equipment. The device comprises a flexible foldable polymer packaging layer on the front surface, a foldable transparent film capacitive touch sensing layer, a foldable polymer insulating layer (a built-in magnet and an iron sheet are used for realizing the magnetic bonding and fixing effects after the device is folded), a foldable OLED display screen, a foldable flexible circuit board embedded with a rigid processor and a battery and a foldable flexible packaging bottom layer at the bottom; if the layers are required to be electrically conductive, transparent conductive adhesive is adopted for composite adhesion, and if the layers are required to be insulated, insulating OCA optical adhesive is adopted for composite adhesion, so that rigid parts are not introduced in the whole assembly mode. By way of example, but not limitation, the invention provides a solution which has the following beneficial effects: the equipment can be folded, can be bent for a large number of times at will, so as to realize the back-and-forth conversion of functions of the mobile phone and the portable computer, and has convenient operation and strong practicability.
Description
Technical Field
The invention relates to the technical field of super-flexible electronic equipment, in particular to paper folding type mobile phone/computer integrated super-flexible equipment capable of being bent repeatedly at will.
Background
Along with the development of science and the progress of technology, the requirements and the dependence of people on electronic communication equipment (particularly mobile phones, tablet computers) are increasingly improved, and along with the increasingly strong functions of the mobile phones, the mobile phones are developed towards the direction of micro computers, but the mobile phones still cannot replace the core functions of the notebook computers due to the limitation of the screen sizes of the mobile phones; meanwhile, the computer is inconvenient to carry, so that the mobile phone is prevented from being realized, and if the functions of the mobile phone, the tablet and the computer can be integrated and portable, the development of the communication electronic industry can be greatly promoted, so that the work and the life of people are greatly facilitated. In order to achieve the aim, the most direct mode is to achieve the random conversion of the mobile phone, the tablet personal computer by changing the size of the equipment at will. For this reason, related companies and research institutions in various countries in the world are actively conducting related research. The main developments and problems are as follows:
although apple company does not formally put forward the concept of integration of mobile phone and computer, but designs and applies for related patent of foldable mobile phone shell and patent named as flexible display device (No. 9504170), apple takes advantage of elastic structure and memory property of nickel-titanium alloy in the patent and replaces existing flexible polymer. In some examples of the patent, such foldable smartphones include a foldable base and are divided into upper and lower sections, each of which includes a processor, sensors and some common circuit components of smartphones. Such as a camera, display controller, speaker module and ambient light sensor in the upper half and a microphone, CPU, GPU, vibrator and other necessary components in the lower half. The upper and lower parts are connected by a single or multiple hinge mechanism and can move and fold each other, and the upper and lower parts exchange data by a flexible printed circuit board, but the designs are far away from the integration of a mobile phone and a computer, and can be only regarded as a smart flip mobile phone, and the limitations are as follows: 1) The folding part adopts a hinge folding process, and can only be folded in half, so that the device is not beneficial to effective shrinkage, and the practicability is not strong; 2) These flexible and stretchable screens and devices, which are designed for apples, cannot be changed in any way in a truly sense, nor are they flexible and foldable devices.
The Canadian queen university releases a paper mobile phone which can be operated in a bending mode, but 1) the flexible material adopted by the paper mobile phone can only realize bending at a certain angle and can not be folded at a large angle, so that the integration of a mobile phone and a computer can not be realized; 2) The touch-type smart phone cannot be subjected to clicking operation through touch, and can only be subjected to mechanical induction operation through bending, so that most parts of the smart phone are omitted in the components.
The three-star electronic device is characterized in that an integrated conception is provided and related conceptual products are designed, the three-star electronic device is formed by splicing three operation display panels with the size of a mobile phone, the mobile phone can be folded and spread around a shaft through a bearing at a joint, the mobile phone is obtained after folding, the tablet personal computer is obtained after spreading, the tablet personal computer is obtained after external keyboard, and the notebook personal computer is obtained after external keyboard, but the conceptual products still do not reach the purpose and the requirement of random scaling in the three-dimensional direction, so the conceptual products cannot be called as integrated equipment at all, and three reasons are as follows: 1) In terms of area scaling, limited by the size of each splice, the longitudinal dimension cannot be changed, resulting in: the size cannot be further reduced downwards, and the carrying is inconvenient; cannot be further increased upwards, and affects vision and is inconvenient to operate. 2) In terms of thickness and volume, as each operation panel is one mobile phone, the whole equipment is too thick and too large in volume after being folded, so that the equipment is quite heavy and meets the requirements of being not convenient to operate and carry; 3) In the folding mode, the product adopts a flexible folding operation mode, but folds by means of mechanical turning of a bearing, which is similar to the traditional flip mobile phone, namely, the mechanical connection of three mobile phones, so that the product cannot be freely scaled in a three-dimensional space, and is not an innovative design, and no integral concept is considered at all. In summary, the conceptual product is not more convenient to use, but rather awkward, and is less portable and functional than a separate cell phone, tablet and computer because of the inability to implement any folding mode: as a mobile phone, the mobile phone is too long, too thick and too heavy, and is inconvenient to carry; as a flat plate, the dimensions are not consistent; as a computer, the screen is too small and flat, the functions are too weak, the functions are far less than those of the existing notebook computer, and the notebook computer also needs to be provided with an external keyboard and cannot be carried at all. Therefore, the mobile phone and computer are integrated with the concept of exchange, and any conversion of the mobile phone, the tablet and the computer on the premise of carrying can not be really realized, so that the mobile phone and the computer cannot be called as real integrated equipment.
In summary, at present, no one has proposed to use the existing super-flexible material to realize the integration of mobile phone, tablet and computer by adopting paper folding design, and no one has been able to truly manufacture the integrated equipment of mobile phone and computer.
Disclosure of Invention
The invention aims at: the paper folding type mobile phone/computer integrated super-flexible device has the advantages that the defects of the prior art are overcome, the miniaturization and portability of a computer screen can be realized, the enlargement of the mobile phone can be realized, the use experience of the mobile phone is improved, and the back-and-forth conversion of functions of the mobile phone and a portable computer can be realized.
In order to achieve the above object, the present invention provides the following technical solutions:
a paper folding type mobile phone/computer integrated super-flexible device is characterized in that: the device comprises a flexible foldable polymer packaging layer on the front surface, a foldable transparent film capacitive touch sensing layer, a foldable polymer insulating layer, a foldable OLED display screen, a foldable flexible circuit board embedded with a rigid processor and a foldable flexible packaging bottom layer at the bottom;
when the layers are required to be conductive, transparent conductive adhesive is adopted for compound adhesion; when insulation is needed between layers, the insulation OCA optical cement is adopted for composite adhesion, and rigid parts are not introduced in the whole assembly mode.
Preferably, the magnet and the iron sheet are embedded in the foldable polymer insulating layer;
the magnets and the iron sheets are symmetrically distributed in the two side line positions and the middle line position of the foldable polymer insulating layer in pairs so as to realize the magnetic attaching and fixing function of the equipment after being folded.
Preferably, the magnet and the iron sheet embedded in the foldable polymer insulating layer are respectively provided with 1-4 sheets.
Further, the device also comprises a processor and a battery, wherein the processor and the battery are dispersedly embedded on four corners of the foldable flexible circuit board and are connected with each other by a flexible circuit;
the foldable transparent film capacitive touch sensing layer 2 and the foldable OLED display screen 4 are respectively connected with the processor through connecting lines.
Preferably, the flexible circuit is an inkjet printed flexible circuit, and the process comprises the following steps:
1) Preparing copolymerized polyacrylonitrile resin (molecular weight higher than 6-8 ten thousand);
2) Dissolving the copolymerized polyacrylonitrile resin obtained in the step 1) by using solvent dimethyl sulfoxide to form a polyacrylonitrile polymer solution with the viscosity in the range of 1.8-2.8;
3) Firstly, ethylene glycol and 2-methyl ether are mixed according to the volume ratio of 1:1, mixing, and dissolving acetylene black in the mixed solution, wherein the acetylene black accounts for 3% of the total mass for standby;
4) Mixing the polyacrylonitrile polymer solution in the step 2) with the acetylene black mixed solution in the step 3), and preparing the polyacrylonitrile polymer conductive ink;
5) Designing a required circuit pattern in a computer according to actual needs;
6) The method adopts an ink-jet printer to output the designed circuit pattern in the computer for ink-jet printing, and specifically comprises the following steps: printing the polyacrylonitrile polymer conductive ink prepared in the step 4) on a copper foil substrate, thereby obtaining a copper foil printed with a polyacrylonitrile polymer precursor net-shaped circuit;
7) Placing the copper foil printed with the polyacrylonitrile polymer precursor reticular circuit in the step 6) in air for low-temperature heat treatment, heating to 270 ℃, preserving heat for 0.5-3h, and performing pre-oxidation treatment to form the copper foil printed with black pre-oxidized polymer;
8) Performing high-temperature carbonization treatment at 800 ℃ on the copper foil printed with the black pre-oxidized polymer in the step 7) in nitrogen, and finally forming the copper foil printed with the super-flexible carbon net-shaped circuit;
9) Preparing a foldable flexible board, laminating the foldable flexible board on the super-flexible carbon network circuit on the copper foil in the step 8), heating and hot-pressing to enable the super-flexible carbon network circuit to be separated from the copper foil and transfer and imprint on the foldable flexible board, and finally obtaining the foldable flexible circuit board 5.
Preferably, the flexible foldable polymer packaging layer and the foldable transparent film capacitive touch sensing layer are adhered by adopting transparent conductive adhesive;
the foldable transparent film capacitive touch sensing layer 2 and the foldable polymer insulating layer 3, the foldable polymer insulating layer 3 and the foldable OLED display screen 4, the foldable OLED display screen 4 and the foldable flexible circuit board 5, and the foldable flexible circuit board 5 and the foldable flexible packaging bottom layer 6 are adhered by adopting the insulating OCA optical cement.
Compared with the prior art, the technical scheme adopted by the invention has the innovation that:
(1) And (3) design innovation: 1) Breaks through the thought limitations of splicing expansion and mechanical folding of equipment, designs a new form of random folding in the ultra-flexible three-dimensional direction without limit on the size, thereby truly realizing the integration of a mobile phone, a tablet personal computer; 2) The design of the distributed main board processor is provided for the first time, the whole is effectively zero, and the problem that the rigidity of the main board of the equipment cannot be folded is solved; 3) The first design provides an embedded magnet attaching mode, so that the device is folded and then is tightly attached to realize the integrity.
(2) The technical innovation is as follows: 1) Ultra-flexible carbon inkjet printed wiring technology that can withstand repeated folding; 2) The traditional semi-liquid ion touch screen is applied for the first time, the physical limitation of the traditional ITO rigid touch screen is completely broken through, the difficult problem of complicated wiring on the surface of the touch screen is solved, the production and touch process are greatly simplified, a new touch sensing mode of intelligent equipment is innovated, and the arbitrary folding function of the touch screen is completely realized; 3) The existing PDMS high light-transmitting polymer super-flexible material is selected as the mobile phone shell, so that the problem that the equipment shell cannot be repeatedly folded in a large quantity is solved.
Drawings
FIG. 1 is a bottom cross-sectional view of a paper folding type mobile phone/computer integrated super-flexible device according to an embodiment of the present invention;
fig. 2 is a 3D effect diagram of a paper folding type mobile phone/computer integrated super-flexible device according to an embodiment of the present invention;
fig. 3 is a schematic top view illustrating a folding process of the paper folding type mobile phone/computer integrated super-flexible device according to an embodiment of the present invention.
Reference numerals illustrate:
the touch-sensitive display comprises a flexible foldable polymer packaging layer 1, a foldable transparent film capacitive touch-sensitive layer 2, a foldable polymer insulating layer 3, a foldable OLED display screen 4, a foldable flexible circuit board 5, a foldable flexible packaging bottom layer 6, a magnet 7, an iron sheet 8 and a rigid processor area A.
Detailed Description
The technical scheme of the paper folding type mobile phone/computer integrated super-flexible device provided by the invention is further described below with reference to specific embodiments and drawings thereof. The advantages and features of the present invention will become more apparent in conjunction with the following description.
It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the present invention in any way. The technical features or combinations of technical features described in the embodiments of the present invention should not be regarded as isolated, and they may be combined with each other to achieve a better technical effect. Additional implementations are also included within the scope of the preferred embodiments of the present invention and should be understood by those skilled in the art to which the embodiments of the present invention pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative and not limitative. Thus, other examples of the exemplary embodiments may have different values.
The drawings of the invention are in a very simplified form and are not to scale precisely, but are for the purpose of illustrating embodiments of the invention conveniently and clearly, and are not intended to limit the scope of the invention. Any structural modification, proportional change or size adjustment should fall within the scope of the technical disclosure without affecting the effects and the achieved objects of the present invention. And the same reference numbers appearing in the figures represent the same features or elements, as may be used in different embodiments.
As shown in fig. 1 to 3, the present invention provides a paper folding type mobile phone/computer integrated super-flexible device.
As shown in fig. 1, the paper folding type mobile phone/computer integrated super-flexible device comprises a front flexible foldable polymer packaging layer 1, a foldable transparent film capacitive touch sensing layer 2, a foldable polymer insulating layer 3 (a built-in magnet 7 and an iron sheet 8), a foldable OLED display screen 4, a foldable flexible circuit board 5 embedded with a rigid processor and a battery, and a bottom foldable flexible packaging bottom layer 6 from top to bottom in sequence in a fully-unfolded state.
The specific implementation modes of the layers are as follows:
(1) The front flexible foldable polymer packaging layer 1 adopts the existing high light transmittance polymers (such as PU, PET, PDMS and the like), so that the refraction and scattering of light can be reduced, the screen display fidelity is ensured, and meanwhile, good tightness can be maintained.
(2) The foldable transparent film capacitive touch sensing layer 2 is a high-transparency hydrogel ion touch screen manufactured by using polyacrylamide hydrogel containing LiCl; the shape is solid but has liquid property, and is gel substance similar to jelly or soft candy; ions are used for replacing electrons to serve as conductors, so that the electrostatic touch panel core technology breaks through the physical limitations of electronic circuits, transistors, diodes and the like which are currently used for touch panel materials; spreading gel containing ions, attaching electrodes to four corners to form a touch panel, driving the surface by electrostatic capacity, transmitting current generated by touch to the four corners, measuring the quantity of the current, converting the quantity of the current into coordinates, and further calculating the touch position of the finger; because of the liquid property and certain fluidity, the folding capability can be realized, and the light transmittance is good, the conductivity is good, and the induction is sensitive.
(3) The foldable polymer insulating layer 3 is made of a general polymer such as Polydimethylsiloxane (PDMS). When the dimethyl siloxane is in a melting state, the magnet 7 and the iron sheet 8 are embedded in the insulating layer 3, wherein the specific embedding positions are respectively four vertex angles and four edges close to a central line, and then the insulating layer is cooled and molded.
When the whole equipment is folded, the pair of magnets 7 and the iron sheet 8 at the edge of the contact surface are attracted to each other after approaching to each other, so that the contact surfaces are mutually attached and fixed;
when the equipment needs to be unfolded again, the magnet attraction can be separated by slightly applying external force; i.e. a magnetic snap-on mode.
Preferably, the magnet 7 and the iron sheet 8 embedded in the foldable polymer insulating layer 3 may be provided with 1 to 4 sheets each.
(4) The foldable OLED display screen 4 can be a foldable OLED display screen which is put into mass production and sold by domestic/foreign companies (such as samsung company and the like); the foldable OLED super-flexible display screen has the display characteristics of high definition and high fidelity, and can be folded for many times without affecting functions such as imaging.
(5) In the foldable flexible circuit board 5 (using PDMS substrate) embedded with the rigid processor and battery, the processor and battery do not need to be flexible because of their small area. In order not to affect the folding of the device, the processor and the battery are mounted on four corners of the foldable flexible circuit board 5 in a scattered manner and are connected with each other by flexible circuits. Specifically, the innovative thought of combining an ink-jet printing process with a reticular circuit design is adopted on the surface of a flexible substrate, a flexible substrate copper foil is used as printing paper, the designed reticular circuit is input into a computer, the computer is printed on the copper foil through an ink-jet printer with a polyacrylonitrile polymer solution as a raw material, then the polymer circuit on the surface of the copper foil is carbonized into an ultra-flexible carbon reticular circuit at high temperature, and then a foldable flexible board is laminated on the copper foil printed with the arranged circuit, so that the circuit is separated from the copper foil and is printed on the foldable flexible board, and circuit arrangement on the surface of the foldable flexible board 5 is completed, and finally the foldable flexible circuit board 5 is obtained; meanwhile, the processor and the battery parts are mounted on the flexible substrate by using an improved Surface Mount Technology (SMT). From the geometric perspective, the device can be folded in half any number of times, and the processor and the battery are not affected as long as the area after being folded in half is larger than the area of the processor.
Furthermore, the ink-jet printing of the ultra-flexible carbon net-shaped circuit provides the specific process implementation steps as follows:
1) Firstly, copolymerizing acrylonitrile with a small amount of a second monomer (methyl acrylate) and a third monomer (butylene methylene) by adopting a conventional technology to generate copolymerized polyacrylonitrile resin (the molecular weight is higher than 6-8 ten thousand);
2) Then dissolving copolymerized polyacrylonitrile resin (with molecular weight higher than 6-8 ten thousand) by solvent dimethyl sulfoxide to form polyacrylonitrile macromolecule solution with intrinsic viscosity in the range of 1.8-2.8;
3) Firstly, ethylene glycol and 2-methyl ether are mixed according to the volume ratio of 1:1, mixing to prepare a mixed solution, and dissolving acetylene black in the mixed solution, wherein the acetylene black accounts for 3% of the total mass for standby;
4) Mixing the polyacrylonitrile polymer solution in the step 2) with the acetylene black mixed solution in the step 3), and preparing the polyacrylonitrile polymer conductive ink;
5) Designing a required circuit pattern in a computer according to actual needs;
6) The method adopts an ink-jet printer to output the designed circuit pattern in the computer for ink-jet printing, and specifically comprises the following steps: printing the polyacrylonitrile polymer conductive ink prepared in the step 4) on a copper foil substrate, thereby obtaining the copper foil printed with the polyacrylonitrile polymer precursor net-shaped circuit. The printer uses a drop-down voltage inkjet nozzle (30 um aperture, manufactured by Microfab Technologies company) and mounts the printhead at a computer controlled three-dimensional stage system.
7) Placing the copper foil printed with the polyacrylonitrile polymer precursor reticular circuit in the step 6) in air for low-temperature treatment, heating to 270 ℃, and preserving heat for 0.5-3 hours, namely pre-oxidation treatment, so that a series of chemical reactions of oxidation, pyrolysis, crosslinking and cyclization are carried out to form a heat-resistant trapezoid polymer, namely the copper foil printed with black pre-oxidized polymer;
8) Then the copper foil printed with black pre-oxidized polymer in the step 7) is subjected to high-temperature treatment at 800 ℃ in nitrogen, namely carbonization treatment, so that the circuit polymer further generates crosslinking cyclization, aromatization and polycondensation reaction, hydrogen atoms, nitrogen atoms and oxygen atoms are removed, and finally the copper foil printed with super-flexible carbon net-shaped circuit is formed;
9) Preparing a foldable flexible board, laminating the foldable flexible board on the super-flexible carbon network circuit on the copper foil in the step 8), heating and hot-pressing to enable the super-flexible carbon network circuit to be separated from the copper foil and transfer and imprint on the foldable flexible board, and finally obtaining the foldable flexible circuit board 5.
The foldable flexible board is made of PDMS, is made of flexible repeatedly foldable polymer materials and is an insulator.
The two-step method of performing the ink-jet/carbonization process of the carbon network circuit on the copper foil and then transferring to the polymer flexible substrate is designed as follows: the subsequent carbonization process requires high temperature, and the macromolecule foldable flexible board cannot withstand, so that the polyacrylonitrile macromolecule precursor circuit is printed on the copper foil; the step of transferring the ink-jet carbon circuit from the copper foil to the flexible circuit board aims at avoiding the short circuit phenomenon caused by directly applying the copper foil printed with the super-flexible carbon net-shaped circuit, the copper foil cannot be repeatedly folded, and the foldable flexible board made of PDMS is made of flexible and repeatedly foldable polymer materials and is an insulator, and the short circuit of the conductive circuit cannot be caused, so that the super-flexible carbon net-shaped circuit on the copper foil is transferred to the foldable flexible circuit board; the foldable flexible circuit board 5 printed with the super-flexible carbon conductive net-shaped circuit is finally obtained.
(6) The bottom foldable flexible encapsulant bottom layer 6 is made of a non-light transmissive polymer, and a common foldable flexible polymer (such as PDMS, PEO/PVDF, etc.) may be selected.
Further, the layers are adhered to each other longitudinally by a glue to complete the whole assembly without introducing rigid parts (such as screws, etc.). If the layers are required to be conductive, transparent conductive adhesive (conductive) is used for the colloid; if insulation is desired from layer to layer, the gel uses an optical gel (insulation).
Specifically, the assembly mode among the layers is as follows:
(1) The foldable transparent film capacitive touch sensing layer 2 and the foldable OLED display screen 4 are respectively connected with a processor on the flexible circuit board 5 through connecting lines. The connection mode is implemented by reserving a section of copper wire lead for the anode and the cathode of each layer of circuit, connecting the three layers in series, and overlapping the three layers up and down in sequence, wherein the layers do not need to be bonded by optical cement or other modes.
(2) The front surface of the foldable polymer insulating layer 3 is adhered to the back surface of the foldable transparent film capacitive touch sensing layer 2 by OCA optical adhesive, and the back surface of the foldable polymer insulating layer is also adhered to the front surface of the foldable OLED display screen 4 by the optical adhesive.
(3) And adhering the back surface of the foldable OLED display screen 4 with the flexible main board of the foldable flexible circuit board 5 by using OCA optical cement.
(4) Four side lines on the front surface of the foldable transparent film capacitive touch sensing layer 2 are adhered to the transparent flexible foldable polymer packaging layer 1 by conductive adhesive, and the back surface of the foldable flexible circuit board 5 is adhered to the foldable flexible packaging bottom layer 6 by optical adhesive.
(5) Finally, the edges of the upper and lower packaging layers (1, 6) are subjected to hot-pressing packaging molding, so that the internal components are not affected, and the whole assembly is completed.
As shown in fig. 2, when the paper folding type mobile phone/computer integrated super-flexible device is fully unfolded, namely a rectangular super-thin flexible portable computer (with a gravity sensing system), the folding operation can enable the device to be converted from a computer type to a pad type, a handheld type, a palm type and a palm type in sequence; therefore, the paper folding type mobile phone/computer integrated super-flexible equipment can keep the function integration of the computer mobile phone and can change the use and carrying modes through folding.
By way of example and not limitation, a folding process of the paper folding type mobile phone/computer integrated super flexible device is shown in fig. 3. When the equipment is fully unfolded, the computer type equipment is presented, four corners of the computer type equipment are respectively distributed with four rigid processor areas A, and meanwhile, two side lines and one side of a middle line of the foldable polymer insulating layer 3 of the computer type equipment are respectively embedded with a magnet 7 and an iron sheet 8 in pairs; wherein, left side line has set gradually iron sheet 8 (top position), magnet 7 (middle part is leaned on the upper position), magnet 7 (bottom position) from top to bottom, and the top position of central line is provided with magnet 7, and the bottom position of central line is provided with iron sheet 8, and right side line has set gradually magnet 7 (top position), iron sheet 8 (middle part is leaned on the upper), iron sheet 8 (bottom position) from top to bottom.
In a preferred embodiment, the folding mode of the paper folding type mobile phone/computer integrated super-flexible device in the folding process is that the paper folding type mobile phone/computer integrated super-flexible device is folded in half towards the back through the bottom end of the paper folding type mobile phone/computer integrated super-flexible device or folded in half towards the back through the right side of the paper folding type mobile phone/computer integrated super-flexible device.
Specifically, when the computer type equipment is folded, the bottom end of the computer type equipment is folded towards the back, and the magnet 7 and the iron sheet 8 at the edge of the folded contact surface are attracted to each other after approaching to each other, so that the contact surfaces are mutually attached and fixed to each other, and the computer type equipment is folded into a pad type from the computer type; when the pad type equipment is folded, the right side of the pad type equipment is folded to the back side, and the magnet 7 at the edge of the folded contact surface is attracted to the iron sheet 8 after approaching to each other, so that the contact surfaces are mutually attached and fixed, and the second folding is completed, so that the equipment is folded into a handheld type from the pad type equipment; the two folding processes are repeated, and the device can be further folded into palm type and palm type sequentially. When the equipment needs to be unfolded again, the attraction of the magnet and the iron sheet can be separated only by slightly applying external force, so that the equipment is unfolded in sequence. Therefore, the paper folding type mobile phone/computer integrated super-flexible equipment utilizes a magnetic opening-closing buckle mode in the folding and unfolding process.
In the invention, the integration of the functions of the computer and the mobile phone is realized by configuring the advanced computer processor, the foldable display screen, the touch screen and the built-in soft keyboard; the three-dimensional direction of the whole integrated equipment is arbitrarily repeated paper folding type foldability is realized through the flexible and foldable design (except a processor and a battery) of each part of the equipment; the whole equipment is assembled through the surface bonding technology, the R2R technology and the OCA optical cement bonding technology, so that the technical effect of integration of a mobile phone, a tablet personal computer is achieved. Compared with the design of the existing related products, the design of the invention completely abandons the idea of realizing folding through the rotating shaft, and compared with the single folding design of the rotating shaft, the design of the invention can be folded at any multiple angles, thereby carrying out unlimited scaling of the appearance of the equipment, and the design raw materials are mostly organic matters or netlike carbon materials, and compared with the metal components in the existing related design products, the design of the invention is lighter and thinner, and has portability and flexibility in the true sense. The shell is foldable by adopting an insulating high polymer, the touch screen is foldable by adopting an ionic hydrogel touch screen, the display screen is foldable by adopting a foldable OLED, the main board is designed by adopting a mode of dispersing and arranging rigid chips on a flexible foldable substrate (the novel design is to divide the four core parts of the chips, the memory, the reader and the battery into four parts respectively, and the four parts are dispersed at four corners of the screen and connected by flexible lines), so that the main board of the processor is foldable.
The technical scheme of the invention is innovated as follows: 1. structural design of the foldable integrated machine (main innovation); 2. super flexible carbon inkjet printed wiring technology that can withstand repeated folding (original innovation); 3. the rigid chip dividing and connecting technology (solves the problem that the folding effect is influenced by rigid parts of equipment); 4. the embedded magnet/iron sheet group flexible folding and attaching technology (realizing the integrity of the equipment after folding).
The technical scheme of the invention, by way of example and not limitation, has the following beneficial effects:
(1) The device can be folded and can be folded any number of times.
(2) The laminating effect of overlapping face after equipment is buckled is effectively solved through the form of built-in magnet for the wholeness of equipment after buckling is not influenced.
(3) The foldable transparent film capacitive touch sensing layer can be assembled by utilizing the existing high-transparency ion touch screen made of polyacrylamide hydrogel containing LiCl, and the folding property of the touch screen is realized.
(4) The design implementation of the foldable flexible circuit board is as follows: the invention directly solves the problem that the processor main board which cannot be realized in the prior art is foldable, compared with the flexible bendable main board which is present, the flexible main board can only bend by a small angle and cannot be folded, otherwise, the processor is directly damaged, and the invention completely avoids the influence of folding operation on the processor by utilizing the split design, and the whole folding process cannot touch the processor.
(5) The ultra-flexible carbon ink-jet printed circuit breaks through the bottleneck that a reticular circuit cannot be printed on a flexible substrate, and the ultra-flexible circuit is obtained; and the carbon material is used as the circuit material for the first time, and the problem that the existing circuit can not be folded for many times is solved. The carbonization-transfer-imprinting process involved in the embodiments directly addresses the problem of the inflexible substrate being intolerable in high temperature operation of carbonization of the circuit material. The innovative technology enables the foldable and flexible processor main board.
(6) The screen size of the equipment can be arbitrarily expanded and reduced within a certain range.
(7) The device can realize smaller storage space in a bending and folding mode, and carry devices with computer functions.
(8) The equipment is not easy to break due to the flexibility.
(9) No matter how many times the integrated equipment is folded, the integrated equipment has the functions of a mobile phone and a computer.
(10) The equipment has the advantages that the functionality is higher than that of the existing mobile phone, the portability is higher than that of the existing notebook computer, the energy consumption is lower than that of a general computer, the mobile phone and the computer are the most ideal mobile phone and computer in the future, the functions are expanded on the premise that the volume of the mobile phone is not required to be expanded, and the functions are not required to be reduced for the computer so as to be convenient to carry.
The above description is only illustrative of the preferred embodiments of the invention and is not intended to limit the scope of the invention in any way. Any alterations or modifications of the invention, which are obvious to those skilled in the art based on the teachings disclosed above, are intended to be equally effective embodiments, and are intended to be within the scope of the appended claims.
Claims (6)
1. A paper folding type mobile phone/computer integrated super-flexible device is characterized in that: the device comprises a front flexible foldable polymer packaging layer (1), a foldable transparent film capacitive touch sensing layer (2), a foldable polymer insulating layer (3), a foldable OLED display screen (4), a foldable flexible circuit board (5) embedded with a rigid processor and a bottom foldable flexible packaging bottom layer (6);
the processors are dispersedly embedded on four corners of the foldable flexible circuit board (5) and are connected with each other by flexible circuits;
when the layers are required to be conductive, transparent conductive adhesive is adopted for compound adhesion; when insulation is needed between layers, the insulation OCA optical cement is adopted for composite adhesion, and rigid parts are not introduced in the whole assembly mode.
2. The paper folding type mobile phone/computer integrated super-flexible device according to claim 1, wherein: the magnet and the iron sheet are embedded in the foldable polymer insulating layer (3);
the magnets and the iron sheets are symmetrically distributed in the two side line positions and the middle line position of the foldable polymer insulating layer (3) in pairs so as to realize the magnetic attaching and fixing effect of the equipment after folding.
3. The paper folding type mobile phone/computer integrated super-flexible device according to claim 2, wherein: the magnets and the iron sheets embedded in the foldable polymer insulating layer (3) are respectively provided with 1-4 sheets.
4. The paper folding type mobile phone/computer integrated super-flexible device according to claim 1, wherein: the foldable flexible circuit board also comprises a processor and a battery, wherein the processor and the battery are dispersedly embedded on four corners of the foldable flexible circuit board (5) and are connected with each other by a flexible circuit;
the foldable transparent film capacitive touch sensing layer (2) and the foldable OLED display screen (4) are respectively connected with the processor through connecting lines.
5. The paper folding type mobile phone/computer integrated super-flexible device according to claim 1, wherein: the flexible foldable polymer packaging layer (1) and the foldable transparent film capacitive touch sensing layer (2) are adhered by adopting transparent conductive adhesive;
the foldable transparent film capacitive touch sensing device is characterized in that the foldable transparent film capacitive touch sensing device comprises a foldable transparent film capacitive touch sensing layer (2) and a foldable polymer insulating layer (3), the foldable polymer insulating layer (3) and a foldable OLED display screen (4), the foldable OLED display screen (4) and a foldable flexible circuit board (5), and the foldable flexible circuit board (5) and a foldable flexible packaging bottom layer (6) are adhered by adopting an insulating OCA optical cement composite.
6. A process for manufacturing a flexible circuit of a paper folding type mobile phone/computer integrated super-flexible device according to claim 4, wherein: the flexible circuit adopts an ink-jet printed flexible circuit, and the technical method comprises the following steps:
1) The prepared copolymerized polyacrylonitrile resin has the molecular weight higher than 6-8 ten thousand;
2) Dissolving the copolymerized polyacrylonitrile resin obtained in the step 1) by using solvent dimethyl sulfoxide to form a polyacrylonitrile polymer solution with the viscosity in the range of 1.8-2.8;
3) Firstly, ethylene glycol and 2-methyl ether are mixed according to the volume ratio of 1:1, mixing, and dissolving acetylene black in the mixed solution, wherein the acetylene black accounts for 3% of the total mass for standby;
4) Mixing the polyacrylonitrile polymer solution in the step 2) with the acetylene black mixed solution in the step 3), and preparing the polyacrylonitrile polymer conductive ink;
5) Designing a required circuit pattern in a computer according to actual needs;
6) The method adopts an ink-jet printer to output the designed circuit pattern in the computer for ink-jet printing, and specifically comprises the following steps: printing the polyacrylonitrile polymer conductive ink prepared in the step 4) on a copper foil substrate, thereby obtaining a copper foil printed with a polyacrylonitrile polymer precursor net-shaped circuit;
7) Placing the copper foil printed with the polyacrylonitrile polymer precursor reticular circuit in the step 6) in air for low-temperature heat treatment, heating to 270 ℃, preserving heat for 0.5-3h, and performing pre-oxidation treatment to form the copper foil printed with black pre-oxidized polymer;
8) Performing high-temperature carbonization treatment at 800 ℃ on the copper foil printed with the black pre-oxidized polymer in the step 7) in nitrogen, and finally forming the copper foil printed with the super-flexible carbon net-shaped circuit;
9) Preparing a foldable flexible board, laminating the foldable flexible board on the super-flexible carbon network circuit on the copper foil in the step 8), heating and hot-pressing to enable the super-flexible carbon network circuit to be separated from the copper foil and transfer and imprint on the foldable flexible board, and finally obtaining the foldable flexible circuit board (5) of the invention.
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| KR102347532B1 (en) * | 2014-01-23 | 2022-01-05 | 삼성디스플레이 주식회사 | Flexible display apparatus and method of manufacturing thereof |
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