CN108632405B - Casing structure capable of sensing external stress - Google Patents
Casing structure capable of sensing external stress Download PDFInfo
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- CN108632405B CN108632405B CN201710166103.9A CN201710166103A CN108632405B CN 108632405 B CN108632405 B CN 108632405B CN 201710166103 A CN201710166103 A CN 201710166103A CN 108632405 B CN108632405 B CN 108632405B
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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
- H04M1/026—Details of the structure or mounting of specific components
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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
- H04M1/0279—Improving the user comfort or ergonomics
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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
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/22—Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A first insulating layer is manufactured on a shell, a plurality of stress sensors are manufactured on the first insulating layer to form a strain sensing layer circuit, each stress sensor is provided with a leading-out electrode, the leading-out electrodes are connected to the leading-out circuit layer, the leading-out circuit layer is connected with an output electrode located on the edge of the shell structure, and an inner insulating layer is further arranged on the leading-out circuit layer. The shell structure is a curved surface structure with four curved sides, and the stress sensor layers are distributed according to the curved surface of the shell. The shell of the machine shell structure is formed by adopting a CNC (computerized numerical control) machining or plastic injection molding or carbon fiber die-casting forming method, a first insulating layer is coated, then a strain sensing layer circuit is manufactured through an additive manufacturing process or a printing laser machining process or a spraying etching process or a dispensing process, and then an extraction electrode of the stress sensor is manufactured through a printing etching process or a spraying process or a coating etching process.
Description
Technical Field
The invention belongs to the technical field of electronic products, and particularly relates to a shell structure capable of sensing external stress.
Background
At present, the mobile phone shell is generally composed of a back cover, a middle frame and the like, and the main processing technology comprises injection molding and CNC processing. The mobile phone shell has the functions of protecting, supporting and installing internal devices, serving as an appearance piece and the like. However, with the development of mobile phone intelligence, the only parts of the smart phone that can perform human-computer interaction with people are the front touch display screen and some buttons, and the complex requirements of human-computer interaction applications cannot be met.
Disclosure of Invention
The invention realizes the shell capable of sensing and identifying the external stress, and the shell can be used as a shell of a mobile phone or a tablet personal computer.
A metal shell structure, the outermost layer of the shell is a metal shell, a first insulating layer is made on the metal shell, a plurality of stress sensors are made on the first insulating layer to form a strain sensing layer circuit,
the stress sensor is provided with leading-out electrodes which are all connected to a leading-out circuit layer, the leading-out circuit layer is connected with an output electrode positioned at the edge of the shell structure,
an inner insulating layer is also arranged on the lead-out circuit layer.
The metal casing structure is a curved surface structure with four curved sides, and the stress sensor layers are distributed according to the curved surface of the casing.
The metal shell of the machine shell structure is formed by adopting a CNC (computerized numerical control) machining or plastic injection molding or carbon fiber die-casting forming method, a first insulating layer is coated, then a strain sensing layer circuit is manufactured through an additive manufacturing process or a printing laser machining process or a spraying etching process or a dispensing process, and then an extraction electrode of the stress sensor is manufactured through a printing etching process or a spraying process or a coating etching process.
The strain sensing layer circuit contains three sensor materials,
the first is that the slurry material is manufactured by printing, dispensing, spraying, three-dimensional line ink-jet printing and other process modes;
the second is that the metal wire material is manufactured by the processes of three-dimensional surface lamination, photoetching and etching of the metal foil;
and thirdly, depositing a strain metal film layer by metal plating, and forming a circuit by photoetching.
The slurry material consists of carbon powder material, metal oxide particles and resin material, and the film forming thickness is generally 0.5-50 um;
the metal wire material is Cr and Mo alloy, and the thickness is controlled to 10-500 um;
the metal coating is Cr, Mo metal or alloy, and the thickness is controlled to be 0.03 um-5 um.
The first insulating layer adopts spraying, electroplating, magnetron sputtering or PVD method, the insulating material is alumina or silicon oxide nonmetal material, also can be plastic material, also can be resin material.
The leading-out electrode is made of conductive ink materials printed by a three-dimensional printing technology or is made by a method of photoetching a circuit after the conductive material is coated, and is used for leading out an electric signal of the sensor.
In addition, the outermost layer of the non-metal shell is a non-metal shell which is made of ceramic or plastic or glass material, a plurality of stress sensors are made on the non-metal shell,
the stress sensor is provided with leading-out electrodes which are all connected to a leading-out circuit layer, the leading-out circuit layer is connected with an output electrode positioned at the edge of the shell structure,
an inner insulating layer is also arranged on the lead-out circuit layer.
The non-metal shell structure is a curved surface structure with four curved sides, and the stress sensor layers are distributed according to the curved surface of the shell.
The non-metal shell of the machine shell structure is formed by adopting a CNC (computer numerical control) machining or plastic injection molding or carbon fiber die-casting forming method, then a strain sensing layer circuit is manufactured through an additive manufacturing process or a printing laser machining process or a spraying etching process or a dispensing process, and then an extraction electrode of the stress sensor is manufactured through a printing etching process or a spraying etching process or a coating etching process.
The strain sensing layer circuit contains three sensor materials,
the first is that the slurry material is manufactured by printing, dispensing, spraying, three-dimensional line ink-jet printing and other process modes;
the second is that the metal wire material is manufactured by the processes of three-dimensional surface lamination, photoetching and etching of the metal foil;
and thirdly, depositing a strain metal film layer by metal plating, and forming a circuit by photoetching.
The slurry material consists of carbon powder material, metal oxide particles and resin material, and the film forming thickness is generally 0.5-50 um;
the metal wire material is Cr and Mo alloy, and the thickness is controlled to 10-500 um;
the metal coating is Cr, Mo metal or alloy, and the thickness is controlled to be 0.03 um-5 um.
The leading-out electrode is made of conductive ink materials printed by a three-dimensional printing technology or is made by a method of photoetching a circuit after the conductive material is coated, and is used for leading out an electric signal of the sensor.
According to the invention, through the method of directly manufacturing the surface-mounted mechanical detection sensor in the shell in the processing process of the mobile phone shell, the situation that the stress position and the stress strength can be sensed when each part of the mobile phone shell is stressed when in use is realized, and a brand-new man-machine interaction possibility is provided.
Drawings
Fig. 1 is a schematic mechanism diagram of a metal chassis according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a mobile phone case in an embodiment of the invention.
1-output electrode, 2-internal insulating layer, 3-leading circuit layer, 4-leading electrode of sensor electric signal, 5-stress sensor, 6-first insulating layer, 7-shell.
Detailed Description
As shown in fig. 1, a blank is formed on a mobile phone shell 7 according to the present invention by CNC numerical control processing or plastic injection molding or carbon fiber die-casting, for a metal shell, since metal is a conductive material, a layer of insulating layer 6 is first manufactured, the insulating layer may be formed by spraying, electroplating, magnetron sputtering, PVD or other methods, the insulating material may be a non-metallic material such as alumina, silica, or other non-metallic material, or may be a plastic material, or may be a resin material; the insulation level achieved is class E. The housing of non-metallic material does not require an insulating layer to be made.
Then, a stress sensor 5 is made on the surface of the insulating layer 6, which may comprise three sensor materials,
one is a slurry material (the slurry material can be carbon powder material, metal oxide particles, resin and the like, the thickness of a formed film is generally 0.5-50 um) and is manufactured by the processes of printing, dispensing, spraying, three-dimensional line ink-jet printing and the like;
the other is a metal wire material (the metal wire material is Cr, Mo and other material alloys, the thickness can be controlled to be 10 um-500 um) which is manufactured by the processes of metal foil three-dimensional surface bonding, photoetching and etching;
the other method is to deposit a strain metal film layer (the metal film can be Cr, Mo and other metals or alloys, the thickness is controlled between 0.03um and 5um) on the metal plating film, and then the circuit is formed by photoetching.
The three materials are selected according to different performance requirements. Can also be respectively used at different positions of the shell according to requirements to achieve the best use effect. The slurry material had the best sensitivity according to the sensitivity comparison, and the wire was the worst with the metal plated. The sensor layer is formed by independent sensors 5 distributed on the insulating layer in the shell in an array mode, and the array fluctuates along with the three-dimensional surface shape of the shell.
The independent sensor point manufactured by the sensor layer needs to transmit a strain signal of each sensor after receiving strain through the leading-out electrode 4 and the leading-out circuit layer 3, and the leading-out wire and the electrode are manufactured by adopting a conductive ink material (silver paste, gold paste, carbon paste or other printable conductive paste) printed by a three-dimensional printing technology or a method of photoetching a circuit after coating a film by adopting a conductive material. Two ends of each sensor are connected with an extraction electrode 4, and then the extraction electrode 4 is connected to the extraction circuit layer 3 to transmit the electric signal of the sensor to the output electrode 1 at the edge position.
As shown in fig. 2, the output electrode terminal in the housing structure of the present invention is electrically connected to a signal transmission line (preferably a Flexible Printed Circuit (FPC)), and then the sensor electrical signal is transmitted to the sensor data processing chip, and the sensor electrical signal is transmitted to the mobile phone main control chip after forming a digital signal, so as to further control the mobile phone operating system or the corresponding mobile phone application software, and then give corresponding feedback (including visual, auditory, and vibration touch) to the user.
Claims (2)
1. A machine shell structure is characterized in that the outermost layer of the machine shell is a metal or ceramic or plastic or glass shell, a first insulating layer is manufactured on the shell, a plurality of stress sensors are manufactured on the first insulating layer to form a strain sensing layer circuit,
the stress sensor is provided with leading-out electrodes which are all connected to a leading-out circuit layer, the leading-out circuit layer is connected with an output electrode positioned at the edge of the shell structure,
an inner insulating layer is arranged on the lead-out circuit layer,
the shell structure is a curved surface structure with four curved sides, the distribution of the stress sensor layers is distributed according to the curved surface of the shell,
the shell of the machine shell structure is formed by adopting a metal CNC (computerized numerical control) machining, plastic injection molding or carbon fiber die-casting forming method, a first insulating layer is coated, then a strain sensing layer circuit is manufactured by an additive manufacturing process or a printing laser processing process or a spraying etching process or a dispensing process, then an extraction electrode of the stress sensor is manufactured by a printing etching process or a spraying etching process or a plating etching process,
the strain sensing layer circuit contains three sensor materials,
the first is that the slurry material is manufactured by printing, dispensing, spraying and three-dimensional line ink-jet printing process;
the second is that the metal wire material is manufactured by the processes of three-dimensional surface bonding, photoetching and etching of the metal foil;
the third is that a layer of strain metal film is deposited on the metal plating film, a circuit is formed by photoetching and etching,
the slurry material is composed of carbon powder material, metal oxide particles and resin material, and the film forming thickness is generally 0.5-50 um;
the metal wire material is Cr and Mo material alloy, and the thickness is controlled to be 10-500 um;
the metal coating is Cr, Mo metal or alloy, the thickness is controlled to be 0.03 um-5 um,
the first insulating layer adopts spraying, electroplating, magnetron sputtering or PVD method, the insulating material is alumina, silicon oxide non-metallic material, plastic material or resin material,
the leading-out electrode is made of conductive ink materials printed by a three-dimensional printing technology or is made by a method of photoetching a circuit after the conductive material is coated, and is used for leading out an electric signal of the sensor.
2. A non-metal casing structure is characterized in that the outermost layer of the casing is a non-metal casing made of ceramic or plastic or glass material, a plurality of stress sensors are made on the non-metal casing,
the stress sensor is provided with leading-out electrodes which are all connected to a leading-out circuit layer, the leading-out circuit layer is connected with an output electrode positioned at the edge of the shell structure,
an inner insulating layer is arranged on the lead-out circuit layer,
the non-metal casing structure is a curved surface structure with four curved sides, the stress sensor layers are distributed according to the curved surface of the casing,
the non-metal shell of the machine shell structure is formed by adopting a CNC numerical control machining or plastic injection molding or carbon fiber die-casting forming method, then a strain sensing layer circuit is manufactured through an additive manufacturing process or a printing laser machining process or a spraying etching process or a dispensing process, then an extraction electrode of the stress sensor is manufactured through a printing etching process or a spraying etching process or a plating etching process,
the strain sensing layer circuit contains three sensor materials,
the first is that the slurry material is manufactured by printing, dispensing, spraying and three-dimensional line ink-jet printing process;
the second is that the metal wire material is manufactured by the processes of three-dimensional surface lamination, photoetching and etching of the metal foil;
the third is that a layer of strain metal film is deposited on the metal plating film, a circuit is formed by photoetching and etching,
the slurry material is composed of carbon powder material, metal oxide particles and resin material, and the film forming thickness is generally 0.5-50 um;
the metal wire material is Cr and Mo material alloy, and the thickness is controlled to be 10-500 um;
the metal coating is Cr, Mo metal or alloy, the thickness is controlled to be 0.03 um-5 um,
the leading-out electrode is made of conductive ink materials printed by a three-dimensional printing technology or is made by a method of photoetching a circuit after the conductive material is coated, and is used for leading out an electric signal of the sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166103.9A CN108632405B (en) | 2017-03-20 | 2017-03-20 | Casing structure capable of sensing external stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166103.9A CN108632405B (en) | 2017-03-20 | 2017-03-20 | Casing structure capable of sensing external stress |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108632405A CN108632405A (en) | 2018-10-09 |
| CN108632405B true CN108632405B (en) | 2020-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710166103.9A Active CN108632405B (en) | 2017-03-20 | 2017-03-20 | Casing structure capable of sensing external stress |
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| CN (1) | CN108632405B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113225915B (en) * | 2021-04-13 | 2022-07-22 | 微泰医疗器械(杭州)股份有限公司 | Double-sided sensor structure and blood glucose monitoring device |
| CN113766754B (en) * | 2021-06-08 | 2022-12-09 | 何欣 | Manufacturing method of battery sensor |
| CN113819836B (en) * | 2021-09-13 | 2022-07-12 | 西北工业大学 | Multi-material paper-cut structure extensible strain sensor and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010028920A1 (en) * | 2010-03-31 | 2011-10-06 | Askey Computer Corp. | Mobile communication terminal |
| CN102746640A (en) * | 2012-07-24 | 2012-10-24 | 杜辉 | Protective sleeve for mobile phone and manufacturing technology thereof |
| CN102801835A (en) * | 2012-09-07 | 2012-11-28 | 江苏物联网研究发展中心 | Mobile telephone shell provided with pressing input function |
| CN105060238A (en) * | 2015-07-09 | 2015-11-18 | 武汉大学 | Ultrathin film based capacitive pressure sensor manufacture method |
-
2017
- 2017-03-20 CN CN201710166103.9A patent/CN108632405B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010028920A1 (en) * | 2010-03-31 | 2011-10-06 | Askey Computer Corp. | Mobile communication terminal |
| CN102746640A (en) * | 2012-07-24 | 2012-10-24 | 杜辉 | Protective sleeve for mobile phone and manufacturing technology thereof |
| CN102801835A (en) * | 2012-09-07 | 2012-11-28 | 江苏物联网研究发展中心 | Mobile telephone shell provided with pressing input function |
| CN105060238A (en) * | 2015-07-09 | 2015-11-18 | 武汉大学 | Ultrathin film based capacitive pressure sensor manufacture method |
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| CN108632405A (en) | 2018-10-09 |
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