WO1999013627A1 - Communications transmission device, especially a mobile telephone - Google Patents
Communications transmission device, especially a mobile telephone Download PDFInfo
- Publication number
- WO1999013627A1 WO1999013627A1 PCT/DE1998/002124 DE9802124W WO9913627A1 WO 1999013627 A1 WO1999013627 A1 WO 1999013627A1 DE 9802124 W DE9802124 W DE 9802124W WO 9913627 A1 WO9913627 A1 WO 9913627A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- display
- screen frame
- circuit board
- printed circuit
- communication terminal
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title abstract 2
- 229920003023 plastic Polymers 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
- H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
Definitions
- Co-communication terminal in particular a mobile phone
- the present invention relates to a communication terminal, in particular a mobile phone, in which the components arranged on a circuit board are electromagnetically shielded by means of a screen frame which is applied directly to the circuit board.
- This type of shielding of the components mounted on the circuit board is increasing because it has the advantage that the electrical function can be checked before the entire device is assembled.
- the object of the present invention is to provide a communication terminal of the type mentioned in the introduction, in which a display can also be arranged in a space-saving manner above the screen frame.
- the screen frame consists of a thin-walled, injection-molded, transparent plastic part which is completely metallized on the inside and outside, except in an area provided for a display, that light-emitting diodes are provided on the circuit board in the area of the display , which in openings of the Side walls of the screen frame protrude, and that the display is attached above the surface provided on the top of the screen frame.
- a display can also be arranged in a space-saving manner above a screen frame, since it is attached directly to the screen frame. This is made possible by the fact that the screen frame, in addition to its screen function, takes on the function of a light guide.
- FIG. 1 shows a cross section through an arrangement consisting of printed circuit board, screen frame and display, in a communication terminal according to the present invention
- FIG. 2 shows a plan view of a screen frame with a display arranged thereon in a communication terminal in accordance with the present invention
- Figure 3 shows the detail E of Figure 1 in an enlarged view.
- the components or assemblies (not shown) to be shielded by means of the screen frame 1 are located on a circuit board 3 in the interior of the mobile phone.
- the screen frame 1 is applied EMC-tight directly to the printed circuit board 3.
- the umbrella frame 1 has essentially the shape of a trough.
- the screen frame 1 consists of a thin-walled, injection-molded transparent plastic part. This plastic part is completely metallized on its inner surface in order to achieve the required EMC protection. In addition, the outer surface of the screen frame 1, with the exception of the area provided for a display 2, is also metallized.
- a connecting ribbon cable (not shown) runs from an upper or lower transverse side of the display 2 to a corresponding connection on the printed circuit board 3, via which the display 2 is supplied with the information to be displayed.
- Openings, e.g. B. blind holes, for receiving the LEDs 4 are provided below the area for the display 2 provided on the surface of the screen frame 1 .
- the light-emitting diodes 4 are completely surrounded by the transparent plastic of the screen frame 1.
- the light beams 7 emitted by the light-emitting diodes 4 are guided to the area provided for the display 2 by multiple reflections at the material boundaries.
- the area of The surface of the screen frame 1 below the display 2 can have a special structure for strengthening the refraction and guiding of light.
- the screen frame 1 can have a certain angle (not shown) in the area of the display.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention relates to a communications transmission device, especially a mobile telephone. The components mounted on a printed circuit board are electromagnetically shielded by a shielding frame which is mounted directly on said printed circuit board. Said shielding frame (1) comprises a thin-walled, injection-moulded transparent plastic part which has a metallic coating covering the entire inside of the part and all of the outside apart from in an area provided for a display (2). This ensures that the device is flat. Light-emitting diodes (4) are provided on the printed circuit board (1) in the area of said display (2), said light-emitting diodes projecting into openings in the side walls of the shielding frame when the shielding frame is mounted.
Description
Beschreibungdescription
Koraunikationsendgerät, insbesondere MobiltelefonCo-communication terminal, in particular a mobile phone
Die vorliegende Erfindung betrifft ein Kommunikationsendgerät, insbesondere ein Mobiltelefon, bei dem die auf einer Leiterplatte angeordneten Bauelemente mittels eines Schirmrahmens, der direkt auf der Leiterplatte aufgebracht ist, elektromagnetisch abgeschirmt sind.The present invention relates to a communication terminal, in particular a mobile phone, in which the components arranged on a circuit board are electromagnetically shielded by means of a screen frame which is applied directly to the circuit board.
Diese Art der Abschirmung der auf der Leiterplatte angebrachten Bauteile nimmt immer mehr zu, da sie den Vorteil hat, daß die elektrische Funktion vor dem Zusammenbau des gesamten Gerätes geprüft werden kann.This type of shielding of the components mounted on the circuit board is increasing because it has the advantage that the electrical function can be checked before the entire device is assembled.
Bei dieser Art der Schirmung kommt es allerdings zu Problemen, wenn die Aufteilung der einzelnen Funktionsgruppen des Kommunikationsendgerätes derart ausgewählt ist, daß z. B. der Schirmrahmen unter dem Anzeigedisplay zu liegen kommt . Da bei den heutigen Geräten gefordert wird, daß das Display beleuchtet wird, ergibt sich für den hier geschilderten Fall eine verhältnismäßig große Dicke des Endgerätes, was der allgemeinen Tendenz, diese Geräte immer kleiner und flacher zu gestalten, entgegensteht.With this type of shielding, however, problems arise if the division of the individual function groups of the communication terminal is selected such that, for. B. the umbrella frame comes to rest under the display. Since it is required in today's devices that the display is illuminated, there is a relatively large thickness of the terminal in the case described here, which is contrary to the general tendency to make these devices smaller and flatter.
Aufgabe der vorliegenden Erfindung ist es, ein Kommunikationsendgerät der eingangs genannten Art anzugeben, bei dem auch oberhalb des Schirmrahmens ein Display platzsparend angeordnet werden kann.The object of the present invention is to provide a communication terminal of the type mentioned in the introduction, in which a display can also be arranged in a space-saving manner above the screen frame.
Diese Aufgabe wird für das eingangs genannte Kommunikationsendgerät dadurch gelöst, daß daß der Schirmrahmen aus einem dünnwandig gespritztem durchsichtigen Kunststoffteil besteht, welches innen vollständig und außen außer in einem für ein Display vorgesehenen Bereich metallisiert ist, daß auf der Leiterplatte im Bereich des Displays Leuchtdioden vorgesehen sind, die bei aufgebrachtem Schirmrahmen in Öffnungen der
Seitenwände des Schirmrahmens hineinragen, und daß das Display über der dafür vorgesehenen Fläche auf der Oberseite des Schirmrahmens befestigt ist.This object is achieved for the communication terminal mentioned in the introduction in that the screen frame consists of a thin-walled, injection-molded, transparent plastic part which is completely metallized on the inside and outside, except in an area provided for a display, that light-emitting diodes are provided on the circuit board in the area of the display , which in openings of the Side walls of the screen frame protrude, and that the display is attached above the surface provided on the top of the screen frame.
Bei dem erfindungsgemäßen Kommunikationsendgerät kann ein Display auch über einem Schirmrahmen platzsparend angeordnet werden, da es direkt auf dem Schirmrahmen befestigt wird. Dies wird dadurch ermöglicht, daß der Schirmrahmen zusätzlich zu seiner Schirmfunktion die Funktion eines Lichtleiters übernimmt.In the communication terminal according to the invention, a display can also be arranged in a space-saving manner above a screen frame, since it is attached directly to the screen frame. This is made possible by the fact that the screen frame, in addition to its screen function, takes on the function of a light guide.
Weitere zweckmäßige Ausgestaltungen der vorliegenden Erfindung ergeben sich aus den Unteransprüchen sowie aus der Beschreibung eines in der Zeichnung dargestellten Ausführungs- beispiels.Further expedient refinements of the present invention result from the subclaims and from the description of an exemplary embodiment shown in the drawing.
Es zeigenShow it
Figur 1 einen Querschnitt durch eine Anordnung, bestehend aus Leiterplatte, Schirmrahmen und Display, bei einem Kommunikationsendgerät gemäß der vorliegenden Erfindung,1 shows a cross section through an arrangement consisting of printed circuit board, screen frame and display, in a communication terminal according to the present invention,
Figur 2 eine Draufsicht auf einen Schirmrahmen mit einem darauf angeordneten Display bei einem Kommunikationsendgerät ge- maß der vorliegenden Erfindung, undFIG. 2 shows a plan view of a screen frame with a display arranged thereon in a communication terminal in accordance with the present invention, and
Figur 3 das Detail E aus Figur 1 in einer vergrößerten Darstellung.Figure 3 shows the detail E of Figure 1 in an enlarged view.
In der Zeichnung sind nur die zum Verständnis der Erfindung notwendigen Bauelemente bzw. Baugruppen eines erfindungsgemäßen Mobiltelefons gezeigt.In the drawing, only the components or assemblies of a mobile telephone according to the invention necessary for understanding the invention are shown.
Die mittels des Schirmrahmens 1 abzuschirmenden Bauelemente bzw. Baugruppen (nicht dargestellt) befinden sich auf einer Leiterplatte 3 im Inneren des Mobiltelefons . Der Schirmrahmen 1 ist EMV-dicht direkt auf die Leiterplatte 3 aufgebracht.
Der Schirmrahmen 1 besitzt im wesentlichen die Form einer Wanne .The components or assemblies (not shown) to be shielded by means of the screen frame 1 are located on a circuit board 3 in the interior of the mobile phone. The screen frame 1 is applied EMC-tight directly to the printed circuit board 3. The umbrella frame 1 has essentially the shape of a trough.
Der Schirmrahmen 1 besteht aus einem dünnwandig gespritzten durchsichtigen Kunststoffteil . Dieses Kunststoffteil ist auf seiner inneren Oberfläche vollständig metallisiert, um die geforderte EMV-Schutzwirkung zu erzielen. Zusätzlich ist die äussere Oberfläche des Schirmrahmens 1, mit Ausnahme des für ein Display 2 vorgesehenen Bereichs, ebenfalls metallisiert.The screen frame 1 consists of a thin-walled, injection-molded transparent plastic part. This plastic part is completely metallized on its inner surface in order to achieve the required EMC protection. In addition, the outer surface of the screen frame 1, with the exception of the area provided for a display 2, is also metallized.
An der Längsseite des Schirmrahmens 1 befinden sich in dem Bereich, der für das Display 2 vorgesehen ist, Rasthaken 8, mit denen das Display 2 auf der Oberfläche des Schirmrahmenε 1 befestigt werden kann. Von einer oberen oder unteren Quer- seite des Displays 2 verläuft ein Anschlußbandkabel (nicht dargestellt) zu einem entsprechenden Anschluß auf der Leiterplatte 3 , über welchen das Display 2 mit den anzuzeigenden Informationen versorgt wird.On the long side of the screen frame 1 there are latching hooks 8 in the area provided for the display 2, with which the display 2 can be attached to the surface of the screen frame 1. A connecting ribbon cable (not shown) runs from an upper or lower transverse side of the display 2 to a corresponding connection on the printed circuit board 3, via which the display 2 is supplied with the information to be displayed.
Es soll nun nachstehend die Hintergrundbeleuchtung des Displays 2 bei dem erfindungsgemäßen Kommunikationsendgerät, insbesondere Mobiltelefon, beschrieben werden.The background lighting of the display 2 in the communication terminal according to the invention, in particular a mobile phone, will now be described below.
Unterhalb des auf der Oberfläche des Schirmrahmens 1 vorgese- henen Bereichs für das Display 2 befinden sich an den beiden Längsseiten der Leiterplatte 3 in vorgegebenen Abständen Leuchtdioden 4. In den Bodenflächen der Seitenwände des Schirmrahmens 1 sind an den Stellen, wo die Leuchtdioden 4 vorgesehen sind, Öffnungen, z. B. Sacklöcher, zur Aufnahme der Leuchtdioden 4 vorgesehen.Below the area for the display 2 provided on the surface of the screen frame 1 there are light-emitting diodes 4 on the two long sides of the printed circuit board 3 at predetermined intervals , Openings, e.g. B. blind holes, for receiving the LEDs 4 are provided.
D. h. bei einem auf die Leiterplatte 3 aufgebrachten Schirmrahmen 1 sind die Leuchtdioden 4 vollständig von dem durchsichtigen Kunststoff des Schirmrahmens 1 umgeben. Die von den Leuchtdioden 4 ausgestrahlten Lichtstrahlen 7 werden durch mehrfache Reflektionen an den Materialgrenzen zu dem für das Display 2 vorgesehenen Bereich geleitet. Der Bereich der
Oberfläche des Schirmrahmens 1 unter dem Display 2 kann dabei eine besondere Struktur zur Verstärkung der Lichtbrechung und Lichtführung aufweisen.That is, in the case of a screen frame 1 applied to the printed circuit board 3, the light-emitting diodes 4 are completely surrounded by the transparent plastic of the screen frame 1. The light beams 7 emitted by the light-emitting diodes 4 are guided to the area provided for the display 2 by multiple reflections at the material boundaries. The area of The surface of the screen frame 1 below the display 2 can have a special structure for strengthening the refraction and guiding of light.
Um einen günstigen Blickwinkel zur Ablesung des Displays zu erreichen und um bestimmte Designvorgaben zu erfüllen, kann der Schirmrahmen 1 im Bereich des Displays einen bestimmten Winkel (nicht dargestellt) aufweisen.
In order to achieve a favorable viewing angle for reading the display and to meet certain design requirements, the screen frame 1 can have a certain angle (not shown) in the area of the display.
Claims
1. Kommunikationsendgerät, insbesondere Mobiltelefon, bei dem die auf einer Leiterplatte angeordneten Bauelemente mittels eines Schirmrahmens, der direkt auf der Leiterplatte aufgebracht ist, elektromagnetisch abgeschirmt sind, dadurch gekennzeichnet, daß der Schirmrahmen (1) aus einem dünnwandig gespritztem durchsichtigen Kunststoffteil besteht, welches innen voll- ständig und außen außer in einem für ein Display (2) vorgesehenen Bereich metallisiert ist, daß auf der Leiterplatte (3) im Bereich des Displays (2) Leuchtdioden (4) vorgesehen sind, die bei aufgebrachtem Schirmrahmen (1) in Öffnungen der Seitenwände des Schirmrah- mens (1) hineinragen, und daß das Display (2) über der dafür vorgesehenen Fläche auf der Oberseite des Schirmrahmens (1) befestigt ist.1. Communication terminal, in particular a mobile phone, in which the components arranged on a printed circuit board are electromagnetically shielded by means of a shield frame which is applied directly to the printed circuit board, characterized in that the shield frame (1) consists of a thin-walled, injection-molded transparent plastic part which is inside is completely and externally metallized except in an area provided for a display (2) that on the printed circuit board (3) in the area of the display (2) there are provided light-emitting diodes (4) which, when the screen frame (1) is attached, open in openings of the Side walls of the umbrella frame (1) protrude, and that the display (2) is attached to the surface provided for this on the top of the umbrella frame (1).
2. Kommunikationsendgerät nach Anspruch 1, dadurch gekennzeichnet, daß die Oberfläche des Schirmrahmens (1) unterhalb des Displays (2) eine besondere Struktur zur Lichtbrechung und Lichtführung aufweist .2. Communication terminal according to claim 1, characterized in that the surface of the screen frame (1) below the display (2) has a special structure for refraction and light control.
3. Kommunikationsendgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Display (2) mittels auf dem Schirmrahmen (1) angebrachter Rasthaken (8) über der dafür vorgesehenen Fläche auf der Oberseite des Schirmrahmens (1) befestigt ist.3. Communication terminal according to claim 1 or 2, characterized in that the display (2) by means of on the screen frame (1) attached latching hook (8) above the surface provided on the top of the screen frame (1) is attached.
4. Kommunikationsendgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Oberfläche des Schirmrahmens (1) im Bereich des Dis- plays (2) einen bestimmten Winkel zur waagerechten Ebene des Mobiltelefons aufweist.
4. Communication terminal according to one of the preceding claims, characterized in that the surface of the screen frame (1) in the region of the display (2) has a certain angle to the horizontal plane of the mobile phone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19738981.3 | 1997-09-05 | ||
| DE19738981 | 1997-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999013627A1 true WO1999013627A1 (en) | 1999-03-18 |
Family
ID=7841382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1998/002124 WO1999013627A1 (en) | 1997-09-05 | 1998-07-27 | Communications transmission device, especially a mobile telephone |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1999013627A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1041798A1 (en) * | 1999-04-02 | 2000-10-04 | Sagem Sa | Mobile telephone with amplified listening |
| GB2364158A (en) * | 2000-02-18 | 2002-01-16 | Sensei Ltd | LCD with Backlight and EMI shielding |
| US7624357B2 (en) | 2000-02-18 | 2009-11-24 | Vtech Telecommunications Limited | Mobile telephone with improved man machine interface |
| CN110456571A (en) * | 2019-08-12 | 2019-11-15 | Oppo（重庆）智能科技有限公司 | Display component and terminal device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310889A2 (en) * | 1987-10-09 | 1989-04-12 | Andreas Peiker | Display device comprising a plurality of light sources |
| WO1992014345A1 (en) * | 1991-02-04 | 1992-08-20 | Motorola, Inc. | Keypad apparatus |
| EP0526182A2 (en) * | 1991-07-30 | 1993-02-03 | Honeywell Control Systems Ltd. | LCD carrier |
| JPH06347786A (en) * | 1991-03-29 | 1994-12-22 | Toshiba Corp | Mounting structure of shield case and electronic parts |
-
1998
- 1998-07-27 WO PCT/DE1998/002124 patent/WO1999013627A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0310889A2 (en) * | 1987-10-09 | 1989-04-12 | Andreas Peiker | Display device comprising a plurality of light sources |
| WO1992014345A1 (en) * | 1991-02-04 | 1992-08-20 | Motorola, Inc. | Keypad apparatus |
| JPH06347786A (en) * | 1991-03-29 | 1994-12-22 | Toshiba Corp | Mounting structure of shield case and electronic parts |
| EP0526182A2 (en) * | 1991-07-30 | 1993-02-03 | Honeywell Control Systems Ltd. | LCD carrier |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 095, no. 003 28 April 1995 (1995-04-28) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1041798A1 (en) * | 1999-04-02 | 2000-10-04 | Sagem Sa | Mobile telephone with amplified listening |
| FR2791833A1 (en) * | 1999-04-02 | 2000-10-06 | Sagem | MOBILE TELEPHONE APP WITH AMPLIFIED LISTENING |
| GB2364158A (en) * | 2000-02-18 | 2002-01-16 | Sensei Ltd | LCD with Backlight and EMI shielding |
| GB2364158B (en) * | 2000-02-18 | 2004-01-07 | Sensei Ltd | Mobile telephone with LCD module with backlight and EMI shielding |
| US7624357B2 (en) | 2000-02-18 | 2009-11-24 | Vtech Telecommunications Limited | Mobile telephone with improved man machine interface |
| CN110456571A (en) * | 2019-08-12 | 2019-11-15 | Oppo（重庆）智能科技有限公司 | Display component and terminal device |
| CN110456571B (en) * | 2019-08-12 | 2022-11-08 | Oppo（重庆）智能科技有限公司 | Display assembly and terminal equipment |
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