CN102043519A - Coating for actuator and method of applying coating - Google Patents

Coating for actuator and method of applying coating Download PDF

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Publication number
CN102043519A
CN102043519A CN2010105092389A CN201010509238A CN102043519A CN 102043519 A CN102043519 A CN 102043519A CN 2010105092389 A CN2010105092389 A CN 2010105092389A CN 201010509238 A CN201010509238 A CN 201010509238A CN 102043519 A CN102043519 A CN 102043519A
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CN
China
Prior art keywords
actuator
coating
electronic equipment
lip shape
shape limit
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Pending
Application number
CN2010105092389A
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Chinese (zh)
Inventor
帕特里克·克莱门特·斯特里特马特
理查德·詹姆斯·布罗格莱
伊恩·保罗·布拉塔
托德·罗伯特·帕莱奇内
阿内特·瑞安·韦伯
库尔特·约翰尼斯·格尔德·梅尔霍恩
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BlackBerry Ltd
Original Assignee
Research in Motion Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/578,257 external-priority patent/US8179027B2/en
Application filed by Research in Motion Ltd filed Critical Research in Motion Ltd
Publication of CN102043519A publication Critical patent/CN102043519A/en
Pending legal-status Critical Current

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Abstract

A coating for actuator and a method of applying coating. The method includes applying a lip, comprised of a first material, along at least a portion of an actuator of an electronic device, and applying a coating, comprised of an elastic material, to cover a part of the actuator, the coating disposed to facilitate actuation of the actuator.

Description

The coating of actuator and the method for application of coatings
The cross reference of related application
The application is the further part of the Application No. 12/342,502 formerly submitted on Dec 23rd, 2008, should be incorporated herein with the form of quoting at full content of first to file.
Technical field
Present disclosure relates to the coating of electronic equipment and the actuator in this electronic equipment, and described electronic equipment includes, but not limited to have the portable electric appts of touch-sensitive display.
Background technology
The electronic equipment that comprises portable electric appts has obtained to use widely, and can provide and comprise for example difference in functionality of phone, electronic information and other personal information manager (PIM) application function.Portable electric appts comprises the equipment of several types, comprises movement station, such as simple cellular phone, smart phone, wireless PDA and have 802.11 or the laptop computer of bluetooth (Bluetooth) function.
Portable electric appts such as PDA or smart phone is generally used for hand-held the use, and is convenient for carrying.Small device generally receives an acclaim because of it is portable.For handheld device, touch-sensitive display is also referred to as touch-screen display, is useful especially, and their volume is little and have and allow the finite space of user's input and output.Can be modified in the information that shows on the touch-sensitive display according to function of carrying out and operation.
Need make improvement to equipment with touch-sensitive display.
Description of drawings
Fig. 1 is the block scheme according to portable electric appts of the present invention.
Fig. 2 A is the front view according to the example of portable electric appts of the present invention.
Fig. 2 B is the cross-sectional view along the line 202 of Fig. 2 A according to portable electric appts of the present invention.
Fig. 3 shows the functional-block diagram according to the assembly of portable electric appts of the present invention.
Fig. 4 is the skeleton view according to actuator of the present invention.
Fig. 5 is the exploded view according to actuator of the present invention.
Fig. 6 shows the process flow diagram according to the method for protection actuator of the present invention.
Embodiment
A kind of electronic equipment and method are described below, comprise along at least a portion of the actuator of electronic equipment and apply the lip shape limit that constitutes by first material, and apply the coating that constitutes by resilient material to cover the part of actuator, arrange this coating so that the actuating of actuator.
In order to allow explanation simplify and clear, in the drawings can repeat reference numerals to indicate corresponding or similar unit.Set forth a large amount of specific details so that the complete understanding to embodiment described herein to be provided.Can not have to realize these embodiment under the situation of these specific detail.In other example, do not describe well-known method, process and assembly in detail, obscure mutually with embodiment described herein avoiding.These descriptions should not regarded as restriction to the scope of embodiment described herein.
The present invention relates to electronic equipment, this electronic equipment is a portable electric appts in embodiment described herein.The example of portable electric appts comprises mobile or hand-held, Wireless Telecom Equipment, such as pager, cellular phone, honeycomb fashion smart phone, wireless electron p.m.entry (organizer), personal digital assistant, enable wireless notebook or the like.Portable electric appts can also be the portable electric appts with wireless communication ability, such as handheld electronic game station, digital album, digital camera or miscellaneous equipment.
The block scheme of the example of portable electric appts 100 has been shown among Fig. 1.Portable electric appts 100 comprises a plurality of assemblies, such as the processor 102 of the integrated operation of controlling portable electric appts 100.Carry out the communication function that comprises data and voice communication by communication subsystem 104.The data that received by 106 pairs of portable electric appts of demoder 100 decompress and decipher.Communication subsystem 104 receives from the message of wireless network 150 and to wireless network 150 and sends message.Wireless network 150 can be the wireless network of any kind, includes but not limited to: the dual-mode network of data wireless networks, voice wireless network and while support voice and data communication.Such as more than one rechargeable battery or the power supply 142 with port that another power supply links to each other to portable electric appts 100 power supplies.
Processor 102 with such as random-access memory (ram) 108, storer 110, the miscellaneous equipment that has display 112, electronic controller 116, touch-sensitive display 118, more than one actuator 120, more than one force transducer 122, auxiliary I/O (I/O) subsystem 124, FPDP 126, loudspeaker 128, microphone 130, short-range communication 132 and the miscellaneous equipment subsystem 134 that touches quick covering 114 carries out alternately.Have the display 112 that touches quick covering 114 and operationally link to each other, constitute touch-sensitive display 118 together with electronic controller 116.Carry out user interactions with graphic user interface by touching quick covering 114.Processor 102 via electronic controller 116 with touch quick covering 114 and carry out alternately.Via processor 102 display message on touch-sensitive display 118, such as text, character, symbol, image, icon and other clauses and subclauses that can on portable electric appts, show or present.Processor 102 can also carry out alternately with accelerometer 136, can use this accelerometer 136 to detect gravity or the direction of the reacting force that caused by gravity.
For the subscriber that marked network inserts, portable electric appts 100 uses subscriber identity module or removable user identity module (SIM/RUIM) card 138, is used for and the network service such as wireless network 150.Alternatively, user totem information can be programmed in the storer 110.
Portable electric appts 100 also comprise carry out by processor 102 and be typically stored in the persistence such as storer 110, renewable storer) in operating system 146 and software program or assembly 148.Can load additional application or program to portable electric appts 100 by wireless network 150, auxiliary I/O subsystem 124, FPDP 126, short-range communication subsystem 132 or any other suitable subsystem 134.
Can handle the signal of the reception such as text message, email message or page download by communication subsystem 104, and with this signal input processor 102.Processor 102 is handled the signal that receives, to display 112 and/or 124 outputs of auxiliary I/O subsystem.The subscriber can generate the data clauses and subclauses, and for example email message can send these data clauses and subclauses by communication subsystem 104 on wireless network 150.For voice communication, the integrated operation of portable electric appts 100 is similar.Loudspeaker 128 outputs are from the audible information of electrical signal conversion, and microphone 130 is converted to electric signal with audible information and is used for handling.
As known in the art, touch-sensitive display 118 can be any suitable touch-sensitive display, such as capacitive character, resistive, infrared or surface acoustic wave (SAW) touch-sensitive display.The capacitive touch-sensitive display comprises that display 112 and capacitive touch-sensitive cover 114.Covering 114 can be to comprise following multiple-level stack assembling: for example substrate, LCD display 112, ground shield, barrier layer, more than one capacitive touch sensor layer and the lid separated by substrate or other barrier.The capacitive touch sensor layer can be any suitable material, such as figuratum tin indium oxide.
Once Yi Shang touch is also referred to as and touches contact or touch event, can be detected by touch-sensitive display 118, and be handled by controller 116, with the position of determining for example to touch.Touch position data can comprise and be used for the single contact point further handled, such as being positioned at or near the point or the whole contact area at contact area center.Detected touch location can comprise x and y component on touch-sensitive display 118, for example respectively with respect to the level and the vertical direction of the view of touch-sensitive display 118.For example, can determine the x component, determine the y component by the signal that generates from another touch sensor layer by the signal that generates from a touch sensor layer.According to the essence of touch-sensitive display 118, respond that detected (such as finger, thumb or other thing, for example the suitable target of felt pen, pen or other pointer and so on provides signal to controller 116.Contact position more than a place may take place simultaneously, and they can be detected.
Actuator 120 can comprise provides the more than one piezoelectricity of tactile feedback (piezo) actuator.Fig. 2 A is the front view of the example of portable electric appts 100.In the example shown in Fig. 2 A, actuator 120 comprises four piezo-activators 120, and each all is positioned at the bight near touch-sensitive display 118.Fig. 2 B is the cross-sectional view of portable electric appts 100 along the line 202 of Fig. 2 A.Support each piezo-activator 120 in portable electric appts 100, make the contraction of piezo-activator 120 apply power to touch-sensitive display 118, the power that is applied on the display 118 with the outside is opposite.Each piezo-activator 120 comprises the piezoelectric device such as piezoelectric ceramic plate 206, and piezoelectric ceramic plate 206 is attached to the substrate 208 such as metallic substrates.Unit 210 can be between piezoceramic disk 206 and touch-sensitive display 118, and this unit 210 is flexible to small part advantageously, and comprises for example rubberite.In the example shown in Fig. 2 A, use four optional force transducers 122, each force transducer 122 is between unit 210 and substrate 208.When owing to gather or in response to touch-sensitive display 118 externally applied forces being made piezoceramic disk 206 when diameter shrinks substrate 208 bendings at piezoceramic disk 206 place's electric charges.Can regulate electric charge by voltage or electric current that change applies, thereby control is applied to the power of actuator on the touch-sensitive display 118 by piezo-activator 120.Can remove electric charge on the piezo-activator 120 along the controlled discharge electric current of diameter expansion by making piezoelectricity dish 206, reduce the power that is applied to actuator on the touch-sensitive display 118 by piezo-activator 120.If do not apply external force and piezoceramic disk 206 does not have electric charge to covering 114, then piezo-activator 120 can be slightly bent actuator because of mechanical preload.
Fig. 3 shows the functional-block diagram of the assembly of portable electric appts 100.In this example, each force transducer 122 links to each other with controller 302, and controller 302 comprises amplifier and analog to digital converter (ADC).Force transducer 122 can be the power sense resistor in the circuit, its electrical response applied force and changing.Along with the power that applies on touch-sensitive display 118 increases, resistance reduces.For each force transducer 122, determine this change via controller 116.Based on value, determine the touch force that applies in the power at each force transducer 122 place.
Piezo-activator 120 links to each other with piezoelectric actuator 304, and piezoelectric actuator 304 is communicated by letter with controller 302.Controller 302 is also communicated by letter with the primary processor 102 of portable electric appts 100, and can receive and provide signal to primary processor 102.Controller 302 control piezoelectric actuators 304, piezoelectric actuator 304 controls are applied to the voltage of piezoceramic disk 206, thus control is applied to the electric charge and the power of actuator on the touch-sensitive display 118 by piezo-activator 120.Can be about equally and side by side control each piezoceramic disk 206.Alternatively, can separately control piezoceramic disk 206.When the power that applies on touch-sensitive display 118 surpasses first threshold, can adjust the electric charge at piezo-activator 120 places, so that power is passed on the touch-sensitive display, with caving in of simulation cover switch (dome switch).When the power that applies on touch-sensitive display 118 is lower than second threshold value, after piezo-activator 120 activates, can adjust the electric charge at piezo-activator 120 places, power is delivered to actuator on the touch-sensitive display 118, with the release of simulation cover switch by piezo-activator 120.Second threshold value is lower than first threshold.
Fig. 4 shows the skeleton view of piezo-activator 120, and Fig. 5 shows the exploded view of piezo-activator 120.Each piezo-activator 120 links to each other with piezoelectric actuator 304 via conductor 402.Conductor 402 generally includes the metal such as the silver conductor of each side that is deposited on piezoceramic disk 206.Piezoelectric actuator 304 applies voltage on piezoceramic disk 206, with driving actuator 120, and the power of corrective action on touch-sensitive display 118.Can on each piezoceramic disk 206, apply for example voltage of 150V.The metal migration that occurs in electric field, the silver migration that occurs during such as the use silver conductor makes metallic ion move in the direction that electromotive force is increased from the conductor 402 on the side of piezoceramic disk 206.The micro-crack that forms between the period of energization of piezoceramic disk 206 can link up to create bigger crackle.When crackle is enough big, crackle assists silver to migrate to another conductor (not shown) on the opposite side of the piezoceramic disk 206 between piezoceramic disk 206 and the substrate 208, causes piezoceramic disk 206 short circuits.Metallic ion mobile is subjected to the influence that moisture exists, and for example, is subjected to the influence of airborne humidity, and is suppressed when not having moisture and lack moisture mobile.
In order to suppress the metal migration from the conductor such as silver, the lip shape limit 404 of using the projection that is made of polymeric material on each piezo-activator 120 is around piezoelectricity dish 206.This polymeric material can be for example based on the material of silicones, such as P/N 9186L.In Fig. 4 and example shown in Figure 5, lip shape limit 404 is the annular shape on piezoceramic disk 206 circumference.Lip shape limit 404 can be for example in about 200 μ m scope thick to about 400 μ m.The shallow layer 406 of second polymeric material (for example based on the material of silicones, such as 3-1953) covers piezoceramic disk 206 and metallic conductor 402 in the ring that is formed by lip shape limit 404.This shallow layer can for example at about 100 μ m in the scope of about 200 μ m.Coating 406 is thinner than lip shape limit 404, and the elasticity of coating 406 is convenient to the actuating of piezo-activator 120.In the time of on being applied to piezo-activator 120, coating 406 does not have lip shape limit 404 so sticking,, therefore, when not using lip shape limit 404, in the application that some zone that can keep piezo-activator 120 is uncovered, coating 406 may flow.The effect on dam has been played on lip shape limit 404, applies shallow layer 406 and be convenient to cover piezo-activator 120 in the lip shape limit 404 in lip shape limit 404.As mentioned above, when touch-sensitive display 118 is applied external force, piezo-activator 120 bendings.Lip shape limit 404 can be as suppressing the further crooked detent of piezo-activator 120.
Alternatively, can do lip shape limit 404 with other material.For example, can use and detest water or, such as acrylic acid, urethanes, do lip shape limit 404 based on the material of fluorine to the material of water-stop.Similarly, can use other material making coatings 406.For example, can use and detest water or, such as acrylic acid, urethanes, based on the material making coatings 406 of fluorine the material of water-stop.
Fig. 6 shows the process flow diagram of an example of the method for protecting piezo-activator 120.By distributing the pin of polymeric material that described lip shape limit is applied 602 to each piezo-activator 120 on the circumference of each piezoceramic disk 206.The polymeric material on lip shape limit 404 has suitable viscosity, forms lip shape limit 404 when being applied to piezo-activator 120.With lip shape limit 404 air-dry 606 reasonable time sections, with as the dam that applies coating therein.On the zone of the piezo-activator 120 in lip shape limit 404, coating 406 is sprayed 606 at each piezo-activator 120 actuator.Can use any suitable manually or automatically distribute or the spray-on coating machine sprays this coating.With coating air-dry 608.
Before applying coating 406, apply lip shape limit 404 and be convenient to form the coating of the surf zone that covers the piezoceramic disk 206 in the lip shape limit 404.Coating 406 is moved with the metal (such as silver ion) of inhibition from conductor 402 in the side formation sealing of piezoceramic disk 206 and conductor 402, thereby increases the life-span of each piezo-activator 120.
A kind of method comprises along at least a portion of the actuator of electronic equipment and applies the lip shape limit that is made of first material, and applies the coating that is made of resilient material to cover the part of this actuator, arranges this coating so that the actuating of actuator.
A kind of electronic equipment comprises actuator, along lip shape limit at least a portion of actuator, that be made of first material; And the coating that constitutes by resilient material on the part of actuator, arrange this coating so that the actuating of actuator.
Can under the situation of spirit that does not deviate from present disclosure or inner characteristic, embody the present invention in other specific forms.Described embodiment should be thought in every respect illustrative ground and nonrestrictive.Therefore by claims but not scope of the present invention is indicated in aforementioned description.Fall in the connotation of claim equivalent and the scope change and be included in the scope of claim.

Claims (23)

1. method comprises:
Apply the lip shape limit of arranging along at least a portion of the outer rim of the actuator of electronic equipment, constitute by first material; And
Apply the coating that constitutes by resilient material to cover the part of described actuator, arrange described coating so that the actuating of described actuator.
2. method according to claim 1 is wherein arranged described lip shape limit along the outer rim of described actuator.
3. method according to claim 1, wherein said second material covers the silver electrode on the described actuator.
4. method according to claim 1, wherein said actuator comprises piezo-activator, and the described part of described actuator comprises the piezoelectric ceramics device.
5. method according to claim 1, wherein said second material comprises polymeric material.
6. method according to claim 1, wherein said first material comprises polymeric material.
7. method according to claim 1, wherein said second material has bigger viscosity than described first material.
8. method according to claim 1, wherein said second material comprise any in the following material: based on the material of silicones, acrylic acid, urethanes, based on the combination of the material or the above-mentioned material of fluorine.
9. method according to claim 1, wherein said lip shape limit comprise any in the following material: based on the material of silicones, acrylic acid, urethanes, based on the combination of the material or the above-mentioned material of fluorine.
10. method according to claim 1 wherein applies described lip shape limit and comprises by distributing the pin of described first material to apply described lip shape limit around described actuator.
11. method according to claim 1 wherein applies described coating and is included in the described coating of spraying on the described actuator.
12. method according to claim 1, wherein said coating is thinner than described lip shape limit.
13. an electronic equipment comprises:
Actuator;
The lip shape limit that is made of first material is arranged along at least a portion at the edge of described actuator; And
By the coating that resilient material constitutes, be arranged on the described part of described actuator, settle this coating so that the actuating of described actuator.
14. electronic equipment according to claim 13 is wherein arranged described lip shape limit along the outer rim of described actuator.
15. electronic equipment according to claim 13, wherein said actuator comprises piezo-activator, and the described part of described actuator comprises the piezoelectric ceramics device.
16. electronic equipment according to claim 13, wherein said second material covers the silver electrode on the described actuator.
17. electronic equipment according to claim 13, wherein said second material comprises polymeric material.
18. electronic equipment according to claim 13, wherein said first material comprises polymeric material.
19. electronic equipment according to claim 13, wherein said second material has bigger viscosity than described first material.
20. electronic equipment according to claim 13, wherein said second material comprise any in the following material: based on the material of silicones, acrylic acid, urethanes, based on the combination of the material or the above-mentioned material of fluorine.
21. electronic equipment according to claim 13, wherein said lip shape limit comprise any in the following material: based on the material of silicones, acrylic acid, urethanes, based on the combination of the material or the above-mentioned material of fluorine.
22. electronic equipment according to claim 13, wherein said coating is thinner than described lip shape limit.
23. electronic equipment according to claim 13 wherein disposes described lip shape limit to limit the bending of described actuator actuator when being subjected to the outside and applying power.
CN2010105092389A 2009-10-13 2010-10-12 Coating for actuator and method of applying coating Pending CN102043519A (en)

Applications Claiming Priority (2)

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US12/578,257 2009-10-13
US12/578,257 US8179027B2 (en) 2008-12-23 2009-10-13 Coating for actuator and method of applying coating

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EP2662909A1 (en) * 2012-05-08 2013-11-13 Aito B.V. A piezoelectric device
US20170364158A1 (en) * 2016-06-20 2017-12-21 Apple Inc. Localized and/or Encapsulated Haptic Actuators and Elements

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US20080060856A1 (en) * 2000-01-19 2008-03-13 Immersion Corporation Haptic interface for touch screen embodiments

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CN1269637C (en) 2000-09-18 2006-08-16 帕尔技术有限责任公司 Piezoelectric actuator and pump using same
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JP2001202195A (en) * 2000-01-18 2001-07-27 Fujitsu Ltd Information processing system and mouse type input device
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CN1688961A (en) * 2002-10-30 2005-10-26 索尼株式会社 Input device and process for manufacturing the same, portable electronic apparatus comprising input device

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KR101215756B1 (en) 2012-12-26
CA2711021A1 (en) 2011-04-13
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JP2011087453A (en) 2011-04-28
CA2711021C (en) 2013-09-17
KR20110040674A (en) 2011-04-20

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Application publication date: 20110504