WO2006123016A1 - Housse pourvue d’un ecran integre et son procede de fabrication - Google Patents

Housse pourvue d’un ecran integre et son procede de fabrication Download PDF

Info

Publication number
WO2006123016A1
WO2006123016A1 PCT/FI2006/050191 FI2006050191W WO2006123016A1 WO 2006123016 A1 WO2006123016 A1 WO 2006123016A1 FI 2006050191 W FI2006050191 W FI 2006050191W WO 2006123016 A1 WO2006123016 A1 WO 2006123016A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
cover
frame means
injection moulding
cover part
Prior art date
Application number
PCT/FI2006/050191
Other languages
English (en)
Inventor
Anneli Ojapalo
Matti Huttunen
Mikko Silvennoinen
Original Assignee
Perlos Oyj
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 FI20055230A external-priority patent/FI120725B/fi
Application filed by Perlos Oyj filed Critical Perlos Oyj
Publication of WO2006123016A1 publication Critical patent/WO2006123016A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
    • 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
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3431—Telephones, Earphones
    • B29L2031/3437—Cellular phones
    • 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

Definitions

  • the invention relates to a cover provided with an integrated display and to a method for its manufacture.
  • a display is integrated into the cover of a device in such a manner that by exchanging the cover of the device, the display integrated therein is also exchanged.
  • the integration of a display into the cover of a device is known in the art.
  • publication EP 1 345 392 discloses an interchangeable cover including an integrated display for a communication device.
  • the display is usually integrated into the cover part by gluing.
  • the problem in said procedure is that the integration of the display into the cover part by gluing is a relatively complex process.
  • the object of the invention is to provide a cover provided with an integrated display and a method for the manufacture of such a cover in a manner allowing the abovementioned problem to be solved.
  • the object of the invention is achieved with a cover and a method that are characterized in what is stated in the independent claims. Preferred embodiments of the invention are described in the dependent claims.
  • the invention is based on integrating the display into the cover part by the same injection moulding process by which at least an essential part of the cover part is accomplished.
  • An advantage of the manufacturing method of the invention is its speed and simplicity.
  • the use of the manufacturing method of the invention allows the display to be integrated into the cover in connection with the manufacturing process of the cover part, whereby no separate working phase for joining the display to the cover part is required.
  • Figure 1 shows a schematic cross-section of a cover provided with an integrated display according to an embodiment of the present invention
  • Figure 2 is an exploded view of a cover provided with an integrated display according to another embodiment of the present invention.
  • Figure 3 shows a cross-section of a cover comprising the compo- nents depicted in Figure 2.
  • Figure 1 shows a schematic cross-section of a cover comprising a cover part 2 made by an injection moulding process, a display 4, and flexible frame means 6 fastened thereto.
  • the frame means 6 are arranged to prevent or reduce the transfer of the bending stresses occurring in the cover part 2 to the display 4, thus protecting the display 4 from bending stresses during the installation of the cover and during use.
  • the joint between the assembly constituted by the display 4 and the frame means 6 and the cover part 2 is provided by means of said injection moulding process associated with creating the cover part 2.
  • the frame means 6 can be fastened to the display 4 in connection with the manufacturing process of the display. Alternatively, the frame means 6 can be fastened to the display 4 after the manufacturing process of the display, but before the injection moulding process associated with creating the cover part 2.
  • the frame means 6 can be integrally fastened to the display 4.
  • the flexibility of the frame means 6 means that they prevent or reduce the transfer of the bending stresses occurring in the cover part 2 to the display 4.
  • the flexibility of the frame means 6 can be provided for instance with metal spring elements.
  • a cover refers to a component arranged to constitute at least part of the outer surface of the device associated therewith.
  • the cover in Figure 1 is the cover of a mobile station.
  • the cover of the invention can also be used in consumer electronics devices, cameras or other devices that are to be provided with a display integrated into the cover.
  • the cover of the invention can be arranged as an exchangeable or a fixed cover.
  • an exchangeable cover refers to a cover arranged to be exchanged by the user of the device.
  • a fixed cover in turn, refers to a cover that is not arranged to be exchanged by the user.
  • the entire cover part 2 of Figure 1 is made by one injection mould- ing process.
  • one or more portions of the cover part 2 can be pre- fabricated before the injection moulding process by which the main portion of the cover part 2 is made, whereby the prefabricated portion or portions are attached to the main portion of the cover part 2 by means of said injection moulding process.
  • the main portion of the cover part 2 can be manufactured for instance from plastic suitable for injection moulding, and the prefabricated portions of the cover part 2 can be made from metal, for example.
  • the frame means 6 can be made from metal and/or plastic.
  • the cover is manufactured by placing the assembly constituted by the display 4 and the frame means 6 into a mould, wherein the cover part 2 is injection moulded.
  • the display 4 is situated in an auxiliary chamber, which is in association with the actual mould and protects the display 4 from excessive temperature and/or pressure during the injection moulding of the cover part 2.
  • the frame means 6 are situated in such a manner that at least part of their outer surface comes into contact with molten injection moulding material for achieving the joint between the frame means 6 and the cover part 2.
  • the joint generated between the cover part 2 and the frame means 6 is thus provided by the injection moulding material, which, when becoming solidified, adheres to the frame means 6.
  • the auxiliary chamber protecting the display 4 during the injection moulding process is provided in connection with the manufacture of the cover of Figure 1 by means of the frame means 6, which encircle the display 4 circumferentially thus preventing the display 4 from coming into contact with the molten injection moulding material.
  • a corresponding auxiliary chamber can be provided by shaping the actual mould.
  • the frame means 6 encircle the display 4 only circumferentially. If the intention in the injection moulding process is to cast material also behind the display, the rear surface of the display has to be protected from coming into contact with the molten injection moulding material.
  • the rear surface of the display can be protected for instance by providing the frame means with a bottom part arranged for said purpose.
  • the cover of Figure 1 comprises a window element 8 for protecting the front surface of the display 4.
  • the window element 8 is attached to the cover part 2 by using the injection moulding process associated with the creation of the cover part.
  • the window element 8 may be an integrated part of the frame means 6.
  • FIG. 2 is an exploded view of a cover that is a modification of the cover depicted in Figure 1.
  • the cover of Figure 2 comprises cover part 2', a display 4', flexible frame means 6' adapted to be fastened to the display 4', and a window element 8'.
  • Frame means 6' are adapted to extend also behind the display 4'.
  • a back element 12' of frame means 6' is connected to a perimeter element 14' of frame means 6' by plurality of spring elements 10'.
  • a back element 12' of frame means 6' extends behind the display 4', and a perimeter element 14' of frame means 6' extends circumferen- tially around the display 4'.
  • Each spring element 10' comprises two substantially parallel strip portions, and an inclined strip portion connecting the two parallel strip portions.
  • the first one of the parallel strip portions is connected to the back element 12', and the second one of the parallel strip portions is connected to the perimeter element 14'.
  • the back element 12' and the perimeter element 14' are substantially planar, and the planes defined by them are substantially parallel.
  • the incline strip portion of each spring element 10' is at an angle to the planes of back element 12' and perimeter element 14'.
  • the plane of the back element 12' and the plane of the perimeter element 14' are spaced apart.
  • the spring elements 10' of the frame means 6' are adapted to pre- vent the transfer of the bending stresses occurring in the cover part 2' to the display 4', thus protecting the display 4' from bending stresses during the installation of the cover and during use.
  • Figure 3 shows a cross-section of a cover comprising the components depicted in Figure 2.
  • Figure 3 shows how an auxiliary chamber 16' is formed for the injection moulding process by a first injection moulding member 18' and a second injection moulding member 20'. The locations of the first injection moulding member 18' and the second injection moulding member 20' are shown by dashed lines.
  • the auxiliary chamber 16' forms a space that is separated from the actual mould.
  • the display 4' is located in the auxiliary chamber 16' during the injection moulding process.
  • the auxiliary chamber 16' formed by the first injec- tion moulding member 18' and the second injection moulding member 20' protects the display 4' from excessive heat and pressure during the injection moulding process.
  • the pressing surface of the first injection moulding member 18' is adapted to be pressed against an outer edge of the upper surface of the window element 8'.
  • the pressing surface of the second injection moulding member 20' is adapted to be pressed against a lower surface of the perimeter element 14'.
  • the first injection moulding member 18' and the second injection moulding member 20' press the window element 8' and the frame means 6' towards each other with such a force, that molten injection moulding material cannot get into the auxiliary chamber 16' during the injection moulding process.
  • the injection moulding material adheres to the upper and lower surfaces of the outermost portion of the pe- rimeter element 14'.
  • the injection moulding material also adheres to the perimeter element 14' from the radial direction, but this adhesion surface is small since the frame means are formed of relatively thin plate.
  • the surface area of the window element 8' is smaller than the surface area of the frame means 6'. Therefore the frame means 6' extend radially further than the window element 8'.
  • the injection moulding material adheres to the window element 8' only radially.
  • the window element is located entirely inside the auxiliary chamber during injection moulding process, wherein molten injection moulding material cannot get into contact with the window element.
  • the frame means may be the only component that is pressed between the first injection moulding member and the second injection moulding member, wherein the frame means is the only component that adheres to cover part during the formation thereof.
  • the window element acts as frame means, wherein before the injection moulding process the display is fastened to the back surface of the window element, and the window element is fastened to the cover part by using the injection moulding process associated with the creation of the cover part.
  • the display may be fastened to the window element by using silicone, for example, by applying silicone on the outer edge of the upper surface of the display.
  • the silicone layer between the display and the window element acts as a plurality of spring elements, thereby reducing the transfer of the bending stresses occurring in the cover part and in the window element to the display.
  • a term 'window element' means component placed on the upper surface (i.e. front surface) of the display, the window element comprising a transparent portion through which the display can be seen.
  • the window element protects the display against scratching.

Abstract

La présente invention concerne une housse pourvue d’un écran intégré comprenant une partie de housse (2, 2'), dont au moins une partie essentielle est créée par un procédé de moulage par injection, un écran (4, 4') et des moyens d’encadrement (6, 6') fixés à l’écran (4, 4'). L’ensemble constitué par l’écran (4, 4') et les moyens d’encadrement (6, 6') est fixé à la partie de housse (2, 2') à l’aide dudit procédé de moulage par injection associé à la création de la partie de housse (2, 2').
PCT/FI2006/050191 2005-05-16 2006-05-15 Housse pourvue d’un ecran integre et son procede de fabrication WO2006123016A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20055230A FI120725B (fi) 2005-05-16 2005-05-16 Menetelmä integroidulla näytöllä varustetun kuoren valmistamiseksi
FI20055230 2005-05-16
KR1020050106613A KR20060118310A (ko) 2005-05-16 2005-11-08 통합 디스플레이가 제공되는 커버 및 그의 제조를 위한방법
KR10-2005-0106613 2005-11-08

Publications (1)

Publication Number Publication Date
WO2006123016A1 true WO2006123016A1 (fr) 2006-11-23

Family

ID=37430962

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2006/050191 WO2006123016A1 (fr) 2005-05-16 2006-05-15 Housse pourvue d’un ecran integre et son procede de fabrication

Country Status (1)

Country Link
WO (1) WO2006123016A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007132063A1 (fr) * 2006-05-12 2007-11-22 Perlos Oyj Couvercle et procédé de fabrication d'un couvercle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010007485A1 (en) * 1995-04-18 2001-07-12 Hiromitsu Kaga Display apparatus
US6482346B1 (en) * 2000-11-21 2002-11-19 Ross Alcazar Method for manufacturing an in-mold display
US20030027589A1 (en) * 2001-08-06 2003-02-06 Wennemer Dietmar F. Mobile telephone and method for its manufacture
US20030164918A1 (en) * 2002-03-04 2003-09-04 Jukka Kela Display arrangement
WO2005002305A2 (fr) * 2003-06-06 2005-01-06 Sipix Imaging, Inc. Fabrication dans le moule d'un objet presentant un ecran d'affichage integre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010007485A1 (en) * 1995-04-18 2001-07-12 Hiromitsu Kaga Display apparatus
US6482346B1 (en) * 2000-11-21 2002-11-19 Ross Alcazar Method for manufacturing an in-mold display
US20030027589A1 (en) * 2001-08-06 2003-02-06 Wennemer Dietmar F. Mobile telephone and method for its manufacture
US20030164918A1 (en) * 2002-03-04 2003-09-04 Jukka Kela Display arrangement
WO2005002305A2 (fr) * 2003-06-06 2005-01-06 Sipix Imaging, Inc. Fabrication dans le moule d'un objet presentant un ecran d'affichage integre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007132063A1 (fr) * 2006-05-12 2007-11-22 Perlos Oyj Couvercle et procédé de fabrication d'un couvercle

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