WO2003001776A1 - Membrane protectrice etanche, transparente et souple pour ecrans tactiles electronique - Google Patents

Membrane protectrice etanche, transparente et souple pour ecrans tactiles electronique Download PDF

Info

Publication number
WO2003001776A1
WO2003001776A1 PCT/US2002/017728 US0217728W WO03001776A1 WO 2003001776 A1 WO2003001776 A1 WO 2003001776A1 US 0217728 W US0217728 W US 0217728W WO 03001776 A1 WO03001776 A1 WO 03001776A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective
flexible membrane
transparent flexible
sealable transparent
film
Prior art date
Application number
PCT/US2002/017728
Other languages
English (en)
Inventor
Michael E. Hus
Robert J. Cleereman
Jeffrey D. Wenzel
Joseph A. Langmaid
Curtis E. Peterson
Mary M. Hoagland
Frank J. Flavin
Original Assignee
Dow Global Technologies Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Global Technologies Inc. filed Critical Dow Global Technologies Inc.
Priority to EP02739685A priority Critical patent/EP1402708A1/fr
Priority to BR0211047-4A priority patent/BR0211047A/pt
Priority to CA002449394A priority patent/CA2449394A1/fr
Priority to KR10-2003-7016695A priority patent/KR20040010764A/ko
Priority to JP2003508047A priority patent/JP2004534886A/ja
Priority to MXPA03011902A priority patent/MXPA03011902A/es
Publication of WO2003001776A1 publication Critical patent/WO2003001776A1/fr

Links

Classifications

    • 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
    • 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
    • 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
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1633—Protecting arrangement for the entire housing of the computer
    • 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

Definitions

  • the present invention relates to a protective sealable transparent membrane which covers the touch screen of a personal electronic device encased in a protective enclosure.
  • a touch screen is commonly used to input and view data into personal electronic devices.
  • the advantage of a touch screen is that the operator may simply touch the display object or portion of the screen to highlight or select or otherwise input information.
  • an enclosure with a front cover for a touch screen contains one or more gaskets.
  • gaskets leak with time and exposure to environmental contamination and cleaning fluids, but they also require the use of additional assembly steps and addition of the gasket(s) itself.
  • the gasket must be attached and seated properly in order to function effectively.
  • the use of gaskets requires multiple operations and parts which makes front covers using gaskets expensive to manufacture. Gaskets also tend to leak after a relatively short period of time due to the expansion and contraction of the gasket itself due to temperature changes in the environment.
  • FIG. 1 is a perspective view showing the protective transparent flexible membrane.
  • FIG. 2 is a perspective view of the protective transparent flexible membrane and underside of the top portion of the protective enclosure for a personal electronic device that the protective transparent flexible membrane fits into.
  • FIG. 3 is an exploded perspective view of the protective transparent flexible membrane, top portion of the protective enclosure, a personal electronic device and the mating bottom portion of the protective enclosure.
  • An embodiment of the present invention is a protective sealable transparent flexible membrane comprising a film and a frame, which fits into a protective enclosure and is suspended above a personal electronic device, said protective sealable transparent flexible membrane provides a liquid and particulate tight seal.
  • the film is a flexible transparent thermoplastic, preferably a transparent thermoplastic polyurethane elastomer.
  • the frame is a flexible thermoplastic elastomer, preferably a thermoplastic polyurethane elastomer.
  • the film and frame are the same or different flexible thermoplastic elastomer, preferably the same or different thermoplastic polyurethane elastomer.
  • the film is a flexible thermoplastic, preferably a thermoplastic urethane elastomer, with a hardness of between Shore 50 A to Shore 65 D.
  • the protective sealable transparent flexible membrane comprises buttons, preferably molded-in buttons.
  • the protective sealable transparent flexible membrane comprises decorative printing.
  • the present invention is a protective sealable transparent flexible membrane.
  • Said protective sealable transparent flexible membrane fits into a protective enclosure which houses a personal electronic device having a display and/or touch screen, such as a hand held computer, cell phone, a pager, a personal digital assistant (PDA), a gaming device, an electronic music player, a voice recorder, a global positioning system (GPS) and the like.
  • the protective sealable transparent flexible membrane 1 shown in FIG. 1 having a top side and an underside and comprising a film 11 and a frame 12. As shown in FIG. 2, the protective sealable transparent flexible membrane 1 fits into the underside of the top portion of a protective enclosure 21 having an under side 22 and a top side 23.
  • the protective sealable transparent flexible membrane 1 can fit into the topside or underside of the top portion of the protective enclosure 21.
  • the frame 12 forms a mechanical seal with a mating recess 24 in the top portion of the protective enclosure 21.
  • the top portion of the protective enclosure 21 mates with a bottom portion of the protective enclosure 31 as shown in FIG. 3 to form the protective enclosure for a personal electronic device 43.
  • the film 11 can be made from any translucent or preferably transparent thermoplastic by any known film making process known in the art.
  • the film is made from a translucent or transparent polyamide, polyurethane (PU), polycarbonate (PC), polyvinyl chloride (PVC), polyolefin (PO), such as polyethylene (PE) and polypropylene (PP), polyacrylate, polyester, polysiloxane, polystyrene (PS), styrene and acrylonitrile copolymer (SAN) or mixtures thereof.
  • the film is a thermoplastic polyurethane (TPU).
  • the film 11 is a thermoplastic elastomer.
  • the film is must allow for activation of the touch screen through it, for example by depressing the film.
  • the film is an elastomer.
  • the film has good flex fatigue resistance so as to recover its original position after being depressed when activating the touch screen, rigid enough to maintain its position above the touch screen so as to minimize unwanted screen activation, good hardness so as to afford scratch resistance, good solvent resistance and good long term creep properties so that it will not sag over time.
  • Preferred hardness is equal to or greater than Shore 50 A and equal to or less than Shore 65 D.
  • the film 11 has a thickness equal to or greater than 0.001 millimeter (mm), preferably equal to or greater than 0.01 mm, more preferably equal to or greater than 0.02 mm and most preferably equal to or greater than 0.04 mm.
  • the film 11 has a thickness equal to or less than 0.5 mm, preferably equal to or less than 0.1 mm, more preferably equal to or less than 0.08 mm, even more preferably equal to or less than 0.06 mm and most preferably equal to or less than 0.05 mm.
  • the frame 12 can be made from any thermoplastic elastomer which can (1) be adhered to the film and (2) make a liquid and particulate tight mechanical seal when fitted into the recess 24 in the top portion of the protective enclosure 21.
  • the frame is made from a thermoplastic elastomer such as thermoplastic polyolefin (TPO), polyethylene, such as low density polyethylene (LDPE), ethylene and vinyl acetate copolymer (EVA), ethylene and propylene copolymers (EP), polyvinyl chloride, polyurethane, polyamide, polyester and mixtures thereof.
  • TPO thermoplastic polyolefin
  • LDPE low density polyethylene
  • EVA ethylene and vinyl acetate copolymer
  • EP ethylene and propylene copolymers
  • polyvinyl chloride polyurethane
  • polyamide such as polyamide
  • polyester such as polyamide, polyester and mixtures thereof.
  • the frame is made form a thermoplastic polyurethane, such as PELLETHANETM 2102-75 A available from The Dow Chemical Company.
  • the film 11 and the frame 12 may be made from different thermoplastic elastomers or the same thermoplastic elastomer.
  • the film 11 and the frame 12 are made from thermoplastic polyurethane.
  • the protective sealable transparent flexible membrane 1 is a single part, but the film 11 and the frame 12 may be one or more distinct parts. If the film 11 and frame 12 are a single part, it must comprise a translucent or transparent thermoplastic elastomer. If the film 11 and frame 12 are two or more parts, the frame can be made by any known plastic processing technique, such as injection molding, thermoforming, extrusion and die cutting, and the like. The film 11 and the frame 12 may be attached to one another by any means known in the art to form the protective sealable transparent flexible membrane, for example by a mechanical bond or physically with adhesives, solvent bonding, heat staking, sonic welding or insert molding. A preferable method of bonding 11 to 12 is insert molding, for example injection molding or thermoforming the frame 12 over the film 11 to form the protective sealable transparent flexible membrane 1.
  • the protective sealable transparent flexible membrane can vary in size, preferably it enables a view of the personal electronic device within the protective enclosure and more preferably a view of the touch screen of the personal electronic device 43 housed within the protective enclosure.
  • thermoplastic polyurethane flexible film available as PT9200 U type S-2332, natural/clear from Deerfield having a thickness of 0.043 mm and a hardness in the range of Shore 50A to Shore 65 D is used.
  • the frame comprises PELLETHANE 2102-75 A from the Dow Chemical company.
  • the protective sealable transparent flexible membrane is formed by insert injection molding the frame onto the film in an injection molding machine having a mold cavity in the shape of the frame.
  • a piece of the PT9200 U type S-2332film, larger than the frame cavity, is placed between the mold halves, the mold is closed and PELLETHANE 2102-75A is insert molded onto the PT9200 U type S-2332 film.
  • the PELLETHANE 2102-75 A is dried at a temperature between 80 to 95°C and the molding conditions are a melt temperature between 200 to 215°C with a mold temperature between 15 to 60°C.
  • the combined frame and film are removed from the mold and excess film is die cut away to provide a protective sealable transparent flexible membrane of the desired shape.
  • the resulting protective sealable transparent flexible membrane is placed into a top portion of a protective enclosure such that the frame mates with a recess in the top portion of the protective enclosure to form a water and dust tight seal.
  • a personal electronic device is placed in the protective enclosure and the top portion of the protective enclosure is mated with the bottom portion of the protective enclosure.
  • the resulting protective sealable transparent flexible membrane allows for activation of the touch screen as well as good scratch resistance, water and dust resistance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Signal Processing (AREA)
  • Casings For Electric Apparatus (AREA)
  • Position Input By Displaying (AREA)
  • Push-Button Switches (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Packages (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

L'invention concerne une membrane protectrice étanche (1) et transparente comprenant un film (11) et un cadre (12), suspendue au-dessus d'un écran tactile de dispositif électronique personnel (43) enfermé dans une enveloppe protectrice (1). Ladite membrane (1) permet d'activer l'écran tactile, présente une résistance aux rayures et constitue un joint étanche à l'eau et à la poussière.
PCT/US2002/017728 2001-06-22 2002-06-04 Membrane protectrice etanche, transparente et souple pour ecrans tactiles electronique WO2003001776A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP02739685A EP1402708A1 (fr) 2001-06-22 2002-06-04 Membrane protectrice etanche, transparente et souple pour ecrans tactiles electronique
BR0211047-4A BR0211047A (pt) 2001-06-22 2002-06-04 Membrana protetora flexìvel transparente selável
CA002449394A CA2449394A1 (fr) 2001-06-22 2002-06-04 Membrane protectrice etanche, transparente et souple pour ecrans tactiles electronique
KR10-2003-7016695A KR20040010764A (ko) 2001-06-22 2002-06-04 전기식 터치 스크린용 보호성 밀봉식 투명 가요성 막
JP2003508047A JP2004534886A (ja) 2001-06-22 2002-06-04 電子タッチスクリーン用の保護用密封性透明膜
MXPA03011902A MXPA03011902A (es) 2001-06-22 2002-06-04 Membrana protectora sellable flexible transparente para pantallas electronicas de toque.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30028001P 2001-06-22 2001-06-22
US60/300,280 2001-06-22

Publications (1)

Publication Number Publication Date
WO2003001776A1 true WO2003001776A1 (fr) 2003-01-03

Family

ID=23158438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/017728 WO2003001776A1 (fr) 2001-06-22 2002-06-04 Membrane protectrice etanche, transparente et souple pour ecrans tactiles electronique

Country Status (10)

Country Link
US (1) US20020195910A1 (fr)
EP (1) EP1402708A1 (fr)
JP (1) JP2004534886A (fr)
KR (1) KR20040010764A (fr)
CN (1) CN1516949A (fr)
BR (1) BR0211047A (fr)
CA (1) CA2449394A1 (fr)
MX (1) MXPA03011902A (fr)
TW (1) TW533128B (fr)
WO (1) WO2003001776A1 (fr)

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US8068331B2 (en) 2006-09-06 2011-11-29 Roche Diagnostics Operations, Inc. Enclosure to prevent fluid ingress of a device having a touch screen interface

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EP1698965A1 (fr) * 2003-12-26 2006-09-06 Nissha Printing Co., Ltd. Appareil electronique a panneau de protection, panneau de protection et procede de production d'un tel panneau
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BR0211047A (pt) 2004-07-20
US20020195910A1 (en) 2002-12-26
CA2449394A1 (fr) 2003-01-03
EP1402708A1 (fr) 2004-03-31
KR20040010764A (ko) 2004-01-31
TW533128B (en) 2003-05-21
MXPA03011902A (es) 2004-06-03
JP2004534886A (ja) 2004-11-18
CN1516949A (zh) 2004-07-28

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