US20070019378A1 - Display module and portable terminal having the same - Google Patents

Display module and portable terminal having the same Download PDF

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Publication number
US20070019378A1
US20070019378A1 US11/458,354 US45835406A US2007019378A1 US 20070019378 A1 US20070019378 A1 US 20070019378A1 US 45835406 A US45835406 A US 45835406A US 2007019378 A1 US2007019378 A1 US 2007019378A1
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US
United States
Prior art keywords
display
reinforcing member
frame
supporting frame
display module
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US11/458,354
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English (en)
Inventor
Oh-Il Kwon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics 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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of US20070019378A1 publication Critical patent/US20070019378A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • 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
    • 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
    • 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
    • H04M1/185—Improving the rigidity of the casing or resistance to shocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/16—Details of telephonic subscriber devices including more than one display unit

Definitions

  • the present invention relates to a display module and a portable terminal having the same, and more particularly, to a display module having a thin thickness and a reinforcing member to minimize damage thereto, and a portable terminal having the same.
  • FIG. 1 is a perspective view showing a front surface of a display module in accordance with the related art
  • FIG. 2 is a perspective view showing a rear surface of the display module in accordance with the related art.
  • the related art display module 102 comprises a supporting frame 110 mounted at a case of a portable terminal; a first display 112 to display information and being mounted at one surface of the supporting frame 110 and installed at an inner surface of a folder thus to be exposed when the portable terminal is opened; and a second display 114 to display information and being mounted at another surface of the supporting frame 110 and installed at an outer surface of the folder thus to be exposed outwardly when the portable terminal is closed.
  • a flexible printed circuit board 116 electrically connected to the first display 112 and the second display 114 is mounted at one side of the supporting frame 110 .
  • the flexible printed circuit board 116 is centered along an edge of the supporting frame 110 .
  • One side of the flexible printed circuit board 116 is positioned at one side of the supporting frame 110 thus to be electrically connected to the first display 112
  • another side of the flexible printed circuit board 116 is positioned at another side of the supporting frame 110 thus to be electrically connected to the second display 114 .
  • a display driving device 120 for driving the first display 112 and the second display 114 is installed at one side of the flexible printed circuit board 116 , and a connector 122 connected to a main printed circuit board mounted at a terminal body is mounted at another side of the flexible printed circuit board 116 .
  • the overall thickness of the portable terminal should be as thin or slim as possible. One way to achieve this is to reduce the size or thickness of the entire display module or portions thereof.
  • the display screen or at least some portion of the display module itself may be more prone to damage after prolonged use, if the terminal is dropped or if other physical force or impacts are applied thereto.
  • One aspect of the present invention is the recognition by the present inventors of the related art problems identified above. Based upon such recognition, the present invention has been developed.
  • the present invention may provide a display module capable of reducing a thickness of a portable (mobile) terminal, minimizing damage thereto due to external impacts, providing a reinforcing member at a supporting frame to minimize damage to components installed at the display when a connector is connected to a main printed circuit board during manufacturing, and a portable (mobile) terminal having the same.
  • the present invention may provide a display module, comprising: a supporting frame; a display mounted at the supporting frame for displaying information; and a reinforcing member installed at the supporting frame for preventing the supporting frame from being distorted thereby preventing a damage of the display due to an external impact.
  • the reinforcing member may be installed at one side of the supporting frame in a width direction.
  • a reinforcing member mounting portion for mounting the reinforcing member may have a concave shape at the supporting frame with a thickness corresponding to a thickness of the reinforcing member.
  • the reinforcing member may be fixed to the reinforcing member mounting portion by an adhesion.
  • the reinforcing member may be provided with a bent portion perpendicularly bent in a longitudinal direction thus to be arranged at a side surface of the supporting frame in a width direction.
  • the display may include a first display mounted at one surface of the supporting frame, and a second display mounted at another surface of the supporting frame.
  • the first display and the second display are electrically connected to each other by a flexible printed circuit board.
  • a ground connection line for a ground connection is connected to one side of the flexible printed circuit board, and a ground port is connected to the end of the ground connection line.
  • the ground port may be arranged at the reinforcing member mounting portion for mounting the reinforcing member thus to contact the reinforcing member.
  • a display driving device is mounted at one side of the flexible printed circuit board, and a connector is mounted at another side of the flexible printed circuit board.
  • the reinforcing member is installed between the connector and the display driving device.
  • the present invention may also provide a portable terminal, comprising: a first body; a second body mounted to the first body to allow opening and closing thereof; and a display module mounted at the first body, wherein the display module includes a supporting frame mounted in the first body; a display mounted at the supporting frame and arranged to be exposed outside the first body; and a reinforcing member installed at the supporting frame for preventing the supporting frame from being distorted thereby preventing a damage of the display due to an external impact.
  • FIG. 1 is a perspective view showing one surface of a display module in accordance with the related art
  • FIG. 2 is a perspective view showing another surface of a display module in accordance with the related art
  • FIG. 3 is a perspective view showing a portable terminal according to a first embodiment of the present invention.
  • FIG. 4 is a disassembled perspective view showing an exemplary display module according to the present invention.
  • FIG. 5 is a perspective view of an exemplary display module according to the present invention.
  • FIG. 6 is a sectional view taken along line ‘A-A’ in FIG. 5 ;
  • FIG. 7 is a disassembled perspective view showing an exemplary display module according to a second embodiment of the present invention.
  • FIG. 8 is a partial sectional view of an exemplary display module according to a second embodiment of the present invention.
  • the present invention relates to an improved structure for a display unit that is part of an electronic device (hereafter referred as a portable terminal, which may include a mobile phone, a wireless communication device, and the like).
  • a portable terminal which may include a mobile phone, a wireless communication device, and the like.
  • a folder type portable terminal according to the present invention will be explained in more detail merely for the sake of explanation.
  • the features of the present invention are applicable to various other configurations for the portable terminal (e.g., slider-type, bar-type, swivel-type, etc.).
  • FIG. 3 is a perspective view showing a portable terminal according to a first embodiment of the present invention
  • FIG. 4 is a disassembled perspective view showing a display module according to the present invention
  • FIG. 5 is a perspective view of the display module according to the present invention
  • FIG. 6 is a sectional view taken along line ‘A-A’ in FIG. 5 .
  • the portable terminal comprises a first body 10 (first housing, folder portion, etc.) having a display module 30 (with a display, screen, LCD, etc.) for displaying information thereon; and a second body 20 (second housing, main body portion, etc.) rotatably connected (e.g., foldable) to the first body 10 by a hinge mechanism, having a key pad 22 (or other input device, such as a touch-pad, touch-sensitive screen, etc.) for inputting information at a front surface thereof, and having a battery 24 (or other power supply or source) at a rear surface thereof.
  • a key pad 22 or other input device, such as a touch-pad, touch-sensitive screen, etc.
  • the features of the present invention can be applied not only to the folder type having the first body 10 and the second body 20 rotatably connected (i.e., foldable relative to) to each other, but also a bar type having a single unit or linear body, a slider type with a first body and a second body being slidably connected to each other, a swivel type with a first body and a second body being swingably connected to each other, etc.
  • a speaker 14 (or other audio output means) for generating sound is mounted at the first body 10
  • a microphone 26 (or other sound pick-up device) for converting sound wave signals into electrical signals is mounted at the second body 20 .
  • the display module 30 may comprise a supporting frame 32 fixed at the first body 10 , displays 34 and 36 mounted on a surface of the supporting frame 32 , and a reinforcing member 40 installed at the supporting frame 32 for reinforcing a mechanical strength (i.e., structural integrity) of the supporting frame 32 to thereby minimize damage to the displays 34 and 36 (and/or other components) during assembly and use.
  • a mechanical strength i.e., structural integrity
  • the supporting frame 32 may be formed of a synthetic resin, and may be relatively thin (e.g., approximately less than 3.2 mm) to allow the portable terminal to have a minimal overall thickness.
  • the displays may include a first display 34 mounted at one surface of the supporting frame 32 and installed at an inner surface of the first body 10 for displaying information when the first body 10 is opened, and a second display 36 mounted at another surface of the supporting frame 32 and installed at an outer surface of the first body 10 so as to be exposed for displaying information.
  • the first display 34 and the second display 36 may respectively have a relatively thin thickness (approximately 0.95 ⁇ 1 mm).
  • the first display 34 i.e., internal screen
  • the second display 36 i.e., external screen
  • a flexible printed circuit board (PCB) 42 (or other type of flexible circuit, electrical connector, etc.) for electrically connecting the first display 34 and the second display 36 may be mounted at one side of the supporting frame 32 .
  • the flexible printed circuit board 42 may be bent at the edge of the supporting frame 32 , with one end of the flexible printed circuit board 42 being connected to one surface of the supporting frame 32 thus to be electrically connected to the first display 34 , and another end of the flexible printed circuit board 42 being connected to another surface of the supporting frame 32 thus to be electrically connected to the second display 36 .
  • the flexible printed circuit board 42 may be adhered to the supporting frame 32 by a two-sided adhesion tape 46 or by any appropriate means of attachment, such as an adhesive.
  • a connector 50 (a port, terminal connection, etc.), electrically connected to a main printed circuit board (and/or other electronic components or elements) in the second body 20 , may be mounted at one side of the flexible printed circuit board 42 .
  • a display driving device 48 (a driver circuit, controller, etc.) for driving the first display 34 and the second display 36 may be installed at another side of the flexible printed circuit board 42 .
  • the reinforcing member 40 (a bracket, a support band, etc.) may be installed along one edge of the supporting frame 32 in a width direction to provide adequate structural support for the supporting frame 32 .
  • a reinforcing member mounting portion 60 (a shoulder, ridge, etc.) for mounting the reinforcing member 40 may be formed in a concave manner at the supporting frame 32 such that the thickness of the supporting frame 32 need not be increased when the reinforcing member 40 is mounted at the supporting frame 32 .
  • the reinforcing member 40 may be formed of a metal, a composite, and/or any other material that provides the appropriate strength for support, while allowing the display module 30 to have minimal thickness.
  • the reinforcing member 40 may be an elongated plate being bent along its length such that at least portions of a top surface and also a side surface of the supporting frame 32 are covered.
  • the reinforcing member 40 may be fixed to the reinforcing member mounting portion 60 by adhesion (e.g., two-sided adhesion tape 52 , other glue or adhesive material, etc.).
  • adhesion e.g., two-sided adhesion tape 52 , other glue or adhesive material, etc.
  • a portion of the reinforcing member 40 may have at least one indentation or through hole, which may accommodate an appropriate means of adhesion or attachment.
  • the reinforcing member 40 may have a portion of at least one side with multiple perforations (openings) in which adhesive material may be located.
  • a portion of the mounting portion 60 may have at least one indentation or through hole, which may accommodate an adhesive (or attachment) means.
  • one or more through holes in the reinforcing member 40 with adhesive material existing therein may allow sufficient attachment with both the frame 30 (i.e., via the mounting portion 60 ) and the flexible PCB 42 at each respective side of the reinforcing member 40 , while providing minimal thickness.
  • Such structure of the reinforcing member 40 , the mounting portion 60 , or both may further minimize the overall thickness while allowing proper attachment of the reinforcing member 40 to the mounting portion 60 .
  • the openings or through hole may reduce the weight of the reinforcing member 40 , which may be useful if the material being used for the reinforcing member 40 is relatively heavy.
  • the concave depth of the reinforcing member 60 may match a total thickness (approximately 0.25 mm) of both the reinforcing member 40 (approximately 0.15 mm) and the two-surface adhesion tape 52 (approximately 0.1 mm). This provides a minimal thickness for the supporting frame 32 after the reinforcing member 40 is mounted thereto.
  • the reinforcing member 40 may be mounted at an inner side of the flexible printed circuit board 42 , and may be installed between the connector 50 and the display driving device 48 . Since the reinforcing member 40 is installed between the connector 50 and the display driving device 48 , the physical force applied to the connector 50 during connection with the main printed circuit board to the display driving device 48 has little adverse effect, which thus minimizes any possible damage to the display driving device 48 and/or other components.
  • the particular location of the reinforcing member 40 acts as a sufficient buffer (i.e., cushion, barrier, etc.) to allow an assembly procedure for the connector 50 to be performed more safely and securely.
  • the reinforcing member 40 is made of a material having an appropriate strength (integrity)
  • the display module 30 can have minimal thickness with a structure that is durable during assembly and usage.
  • the reinforcing member 40 may be installed at (attached to) the supporting frame 32 in a width direction, the supporting frame 32 cannot easily be bent or distorted, and thus damage of the displays 34 and 36 due to external impacts can be minimized. Furthermore, since the reinforcing member 40 may be installed between the connector 50 and the display driving device 48 , the display driving device 48 will not be damaged when the connector 50 is connected to the main printed circuit board.
  • FIG. 7 is a disassembled perspective view showing a display module according to a second embodiment of the present invention
  • FIG. 8 is a partial sectional view of the display module according to a second embodiment of the present invention.
  • the display module according to the second embodiment of the present invention may include a supporting frame 32 fixed in the first body 10 ; a first display 34 and a second display 36 mounted at a surface of the supporting frame 32 for displaying information; a reinforcing member 40 installed at the supporting frame 32 for reinforcing the intensity of the supporting frame 32 thereby preventing a damage of the displays 34 and 36 due to an external impact; a flexible printed circuit board 42 for electrically connecting the first display 34 and the second display 36 ; and a ground port 66 (or other electrical connector or terminal) for ground-connecting between the reinforcing member 40 and the first display 34 and the second display 36 .
  • the supporting frame 32 and the reinforcing member 40 may have the same structures as those of the supporting frame and the reinforcing member 40 aforementioned in the first embodiment, and thus their explanation will be omitted.
  • a ground connection line 64 (or other conductive wire) is connected to one side of the flexible printed circuit board 42 , and the ground port 66 is provided at the end of the ground connection line 64 .
  • the ground port 66 may be arranged at the reinforcing member mounting portion 60 for mounting the reinforcing member 40 thus to contact the reinforcing member 40 , thereby providing a ground connection between the reinforcing member 40 and the first and second displays 34 and 36 .
  • a ground port mounting portion 62 for mounting the ground port 66 may be formed in a concave manner at the reinforcing member mounting portion 60 .
  • the first display 34 and the second display 36 are grounded to the reinforcing member 40 formed of a metal material by the ground port 66 .
  • the present invention provides a mobile terminal comprising, a frame; a flexible circuit wrapped around a portion of an edge of the frame, and a bracket located at an appropriate location between the frame and the flexible circuit along the edge of the frame to protect certain components of the flexible circuit during assembly of the mobile terminal and to support the frame during use of the mobile terminal.
  • the bracket may be an elongated plate having a lengthwise bent portion, such that a profile of the bracket matches the edge of the frame.
  • the frame may have an elongated notch that receives a portion of the bracket such that a part of an outer surface of the bracket and an outer surface of the frame are flush.
  • the bracket may be attached with the frame by an adhesive material, or may be attached with the flexible circuit by an adhesive material, or both.
  • the bracket, the frame or both may comprise one or more indentations or openings that accommodate the adhesive material therein.
  • the flexible circuit may have a display driver and a connector thereon being located in an opposing manner with the flexible circuit wrapped around the edge of the frame, and the bracket providing protection to the display driver when a physical connection is attached to the connector.
  • the bracket may be made of conductive material or comprises a conductive portion that allows grounding.
  • the present invention may further comprise: one or more display screens respectively attached to the frame for a folder portion of the terminal with the flexible circuit providing electrical connections for the display screens, whereby the edge of the frame supported by the bracket is adjacent to a hinge mechanism for the folder portion that can be opened and closed.
  • the reinforcing member may be installed at the supporting frame in a width direction thus to prevent the supporting frame from being distorted, thereby minimizing any damage of the first display and the second display due to external impacts.
  • the reinforcing member may be installed between the connector and the display driving device, the display driving device is unlikely to be damaged when the connector is connected to the main printed circuit board during assembly.
US11/458,354 2005-07-19 2006-07-18 Display module and portable terminal having the same Abandoned US20070019378A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2005-0065361 2005-07-19
KR1020050065361A KR100652748B1 (ko) 2005-07-19 2005-07-19 엘시디모듈 및 이를 구비한 이동통신 단말기

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US20070019378A1 true US20070019378A1 (en) 2007-01-25

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US11/458,354 Abandoned US20070019378A1 (en) 2005-07-19 2006-07-18 Display module and portable terminal having the same
US11/458,509 Expired - Fee Related US7667810B2 (en) 2005-07-19 2006-07-19 Display module and portable terminal having the same

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/458,509 Expired - Fee Related US7667810B2 (en) 2005-07-19 2006-07-19 Display module and portable terminal having the same

Country Status (6)

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US (2) US20070019378A1 (fr)
EP (1) EP1746809B1 (fr)
JP (1) JP5047554B2 (fr)
KR (1) KR100652748B1 (fr)
CN (1) CN1901719B (fr)
DE (1) DE202006021046U1 (fr)

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JP2007025695A (ja) 2007-02-01
US7667810B2 (en) 2010-02-23
KR100652748B1 (ko) 2006-12-01
JP5047554B2 (ja) 2012-10-10
US20070019128A1 (en) 2007-01-25
CN1901719B (zh) 2011-11-23
EP1746809B1 (fr) 2013-09-04
EP1746809A2 (fr) 2007-01-24
DE202006021046U1 (de) 2012-01-31
EP1746809A3 (fr) 2012-08-08
CN1901719A (zh) 2007-01-24

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