GB2298759A - Cover for the visual display of a communication device - Google Patents

Cover for the visual display of a communication device Download PDF

Info

Publication number
GB2298759A
GB2298759A GB9602489A GB9602489A GB2298759A GB 2298759 A GB2298759 A GB 2298759A GB 9602489 A GB9602489 A GB 9602489A GB 9602489 A GB9602489 A GB 9602489A GB 2298759 A GB2298759 A GB 2298759A
Authority
GB
United Kingdom
Prior art keywords
cover
display
communication device
recess
indicating device
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.)
Granted
Application number
GB9602489A
Other versions
GB9602489D0 (en
GB2298759B (en
Inventor
Juan Dafcik
Klaus Zibert
Andreas Roessner
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB9602489D0 publication Critical patent/GB9602489D0/en
Publication of GB2298759A publication Critical patent/GB2298759A/en
Application granted granted Critical
Publication of GB2298759B publication Critical patent/GB2298759B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H04M1/0202—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
    • H04M1/027—Details of the structure or mounting of specific components for a display module assembly including magnifying means

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Casings For Electric Apparatus (AREA)

Description

Cover for a display The present invention relates to a cover for a display in an optical indicating device in communication terminals, in particular mobile communication devices, in which the display is disposed inside a housing at a specific distance below a recess in the housing wall.
The user-friendliness of a communication terminal depends on the quality of the interface between the person and the device. One of the most important elements in this connection is the LCD display. This helps the user during operation by appropriate operating instructions being displayed visually.
Between the LCD display and the user there is a window or a cover. This cover has both a design and a protective function. Transparent glass or plastic discs are used as covers, of varying thickness but uniform over the whole surface. Because of design-related features and/or the existing structural concept, the distance between the LCD display and the cover seems too large in the case of covers in general use so that the user gets the impression of having to look into a deep hole. This tends to cause difficulties in viewing the display from an oblique angle for example.
It is the aim of the present invention to provide a cover for a display in an optical indicating device of the above type, in which the above-described effect is prevented.
In a cover of the above type this is achieved by the inside of the cover facing the display forming a flat surface, whilst the outside of the cover facing the viewer forms a convex surface.
In this way a lens function is integrated into the display cover, which visually reduces the distance between the LCD display and cover for the user. At the same time, the cover of the invention assists lateral reading of the display.
Preferred developments of the present invention are characterised in that the dimensions of the cover are greater than the dimension of the recess, and in that the edge areas of the flat surface are on inner support surfaces connected to the housing wall, and the edges of the surface seal with the edges of the housing surface constraining the outer section, or in that the outer convex surface lying over the recess has relatively large radii of curvature whilst the edge areas of the outer convex surface have relatively small radii of curvature. Therefore, apart from a substantial improvement in the visual relationships for the user there is the possibility of great freedom of design.
For a better understanding of the invention and to show how the same may be carried into effect reference will now be made purely by way of example to the accompanying drawings.
These show: Fig. 1 a plan view of a cover of the invention, Fig. 2 a side view of the cover of the invention shown in Fig. 1, Fig. 3 a front view of the cover of the invention shown in Fig. 1, Fig. 4 a plan view of a mobile communication device in which the cover of the invention is used.
Figs. 1 to 3 show three views of a cover 1 which is constructed in accordance with an embodiment of the present invention. The outer contour of the cover 1 is not essential to the invention and is only selected here because it is adapted to the exemplary embodiment shown in Fig. 4.
In Fig. 1 the area of the recess, limited by the dashed line, is referenced 2. The actual LCD display is located below the recess 2 inside the housing of a mobile communication device 5. The cover 1 of the invention has a flat surface 3 as an inner side and a convex surface 4 as an outer side.
In the illustrated exemplary embodiment of a cover 1 of the invention it is assumed that the dimensions of the cover 1 are greater than the dimensions of the recess 2. This may be desirable because of the design-related features but is not essential. In this embodiment the edge area is simply used to seal the convex outer surface of the cover 1 flush with the housing surface. When considering the construction of such a cover, care should be taken that the convex surface 4 of the cover 1 lying over the recess 2 has a relatively large radius of curvature whereas the edge areas of the outer convex surface 4 may have relatively small radii of curvature to make possible the smooth transition to the surface of the housing.
Due to the fact that smaller radii of curvature are used in the outer region, and that therefore there is a larger refractive index, the cover 1 of the invention aids lateral reading of the display.
Fig. 4 shows the plan view of a mobile communication device (Handy) in which the cover of the invention, which has been described in Figs. 1 to 3, is used above a recess 2.
As already mentioned at the start, the cover is usually made of transparent plastics, such as plexiglass (PMMA), for instance. However, it can also be made of polycarbonate, for instance.

Claims (7)

Claims
1. Cover for a display in an optical indicating device for a communication terminal, in particular for a mobile communication device, in which the display is disposed inside a housing at a predetermined position below a recess in the housing wall, wherein the inside of the cover facing the display forms a flat surface (3), whilst the outside of the cover (1) facing the viewer forms a convex surface (4).
2. Cover according to claim 1, wherein the dimensions of the cover (1) are greater than the dimensions of the recess (2), and wherein the edge areas of the flat surface (3) lie on inner support surfaces connected to the housing wall, and the edges of the convex surface (4) seal with the edges of the housing surface constraining the outer section.
3. Cover according to claim 2, wherein the outer convex surface (4) lying over the recess (2) has relatively large radii of curvature, whilst the edge areas of the outer convex surface (4) have relatively small radii of curvature.
4. An optical indicating device comprising the cover of any one of the preceding claims.
5. An optical indicating device according to claim 4 in which the display is an LCD display.
6. A mobile communication device comprising the optical indicating device of claim 4 or claim 5.
7. A cover for a display in an optical indicating device for a mobile communication device substantially as hereinbefore described with reference to the accompanying drawings.
GB9602489A 1995-03-07 1996-02-08 Cover for a display Expired - Fee Related GB2298759B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29503827U DE29503827U1 (en) 1995-03-07 1995-03-07 Cover for a display

Publications (3)

Publication Number Publication Date
GB9602489D0 GB9602489D0 (en) 1996-04-03
GB2298759A true GB2298759A (en) 1996-09-11
GB2298759B GB2298759B (en) 1997-05-07

Family

ID=8004957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9602489A Expired - Fee Related GB2298759B (en) 1995-03-07 1996-02-08 Cover for a display

Country Status (3)

Country Link
DE (1) DE29503827U1 (en)
FI (1) FI961081A (en)
GB (1) GB2298759B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023077A1 (en) * 1996-11-20 1998-05-28 Ericsson Inc. Protective cover for portable radiotelephone
WO2001017205A1 (en) * 1999-09-02 2001-03-08 Fibox Oy Ab Mobile station with magnifying glass
GB2364848A (en) * 2000-03-03 2002-02-06 Matsushita Electric Ind Co Ltd Portable telephone unit with attachable additional function units
WO2002031634A2 (en) * 2000-10-12 2002-04-18 Siemens Aktiengesellschaft Subscriber device of a radio communication system, in particular, a mobile telephone
WO2002037809A1 (en) * 2000-10-30 2002-05-10 It Innovations Finland Oy Display for an electromechanical device, such as a mobile phone
US6389268B1 (en) 1999-07-29 2002-05-14 Ericsson Inc. Electronic device holders with display panel magnifier
US6888688B2 (en) 2000-05-10 2005-05-03 Microemissive Displays Limited Optoelectronic display device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605373C2 (en) * 1996-02-14 1998-11-19 Bosch Gmbh Robert Device with a display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539699A2 (en) * 1991-09-30 1993-05-05 Motorola, Inc. Portable communications receiver with miniature virtual image display
WO1994013088A1 (en) * 1992-12-02 1994-06-09 Motorola Inc. Housing assembly for a wireless communication device
JPH07222141A (en) * 1994-02-04 1995-08-18 Matsushita Electric Ind Co Ltd Interphone device
GB2293517A (en) * 1994-09-20 1996-03-27 Motorola Inc Portable telephone adapted to accommodate a plurality of distinctive appearances

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0539699A2 (en) * 1991-09-30 1993-05-05 Motorola, Inc. Portable communications receiver with miniature virtual image display
WO1994013088A1 (en) * 1992-12-02 1994-06-09 Motorola Inc. Housing assembly for a wireless communication device
JPH07222141A (en) * 1994-02-04 1995-08-18 Matsushita Electric Ind Co Ltd Interphone device
GB2293517A (en) * 1994-09-20 1996-03-27 Motorola Inc Portable telephone adapted to accommodate a plurality of distinctive appearances

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JAPIO Abstract Accession No.: 04929541 & JP070222141 A (Matsushita) 18/08/95 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023077A1 (en) * 1996-11-20 1998-05-28 Ericsson Inc. Protective cover for portable radiotelephone
US6389268B1 (en) 1999-07-29 2002-05-14 Ericsson Inc. Electronic device holders with display panel magnifier
WO2001017205A1 (en) * 1999-09-02 2001-03-08 Fibox Oy Ab Mobile station with magnifying glass
GB2364848A (en) * 2000-03-03 2002-02-06 Matsushita Electric Ind Co Ltd Portable telephone unit with attachable additional function units
GB2364848B (en) * 2000-03-03 2004-07-21 Matsushita Electric Ind Co Ltd Portable telephone
US6968161B2 (en) 2000-03-03 2005-11-22 Matsushita Electric Industrial Co., Ltd. Portable telephone
US6888688B2 (en) 2000-05-10 2005-05-03 Microemissive Displays Limited Optoelectronic display device
WO2002031634A2 (en) * 2000-10-12 2002-04-18 Siemens Aktiengesellschaft Subscriber device of a radio communication system, in particular, a mobile telephone
WO2002031634A3 (en) * 2000-10-12 2002-06-27 Siemens Ag Subscriber device of a radio communication system, in particular, a mobile telephone
WO2002037809A1 (en) * 2000-10-30 2002-05-10 It Innovations Finland Oy Display for an electromechanical device, such as a mobile phone

Also Published As

Publication number Publication date
FI961081A (en) 1996-09-08
GB9602489D0 (en) 1996-04-03
FI961081A0 (en) 1996-03-07
GB2298759B (en) 1997-05-07
DE29503827U1 (en) 1995-11-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000208