WO2003019909A2

WO2003019909A2 - Mobile telephone with slidable keypad body

Info

Publication number: WO2003019909A2
Application number: PCT/KR2002/001588
Authority: WO
Inventors: Changlim Jeon
Original assignee: Alpha Art Materials Co. Ltd.
Priority date: 2001-08-22
Filing date: 2002-08-22
Publication date: 2003-03-06
Also published as: WO2003019909A3; AU2002341411A1; KR20030017786A

Abstract

A mobile telephone is presented having a slidable keypad body which carries the keypad unit (4), wherein said keypad body can movably be inserted into the body housing of the mobile telephone on which the LCD display panel (2) is arranged. Furthermore, the mobile telephone is converted from standby state to active state, when the keypad body is pulled out from said body housing.

Description

MOBILE TELEPHONE HANDSET

Technical Field

The present invention relates to a mobile telephone. More particularly, the present invention is directed to a mobile telephone handset comprising a body housing on which LCD display panel arranged, and a keypad body which carries on keypad unit and can be inserted into the body housing on which LCD display panel arranged. Background Art

In recent years the demand for compact, lightweight mobile telephones has given rise to a variety of such telephones which have two housings which are joined by a hinge. This allows the two housings of the telephone to be folded together to conserve space when the telephone is not being used. Prior to use however, the telephone may be unfolded so that the two housing portions are at an obtuse angle to each other, one housing portion carrying a microphone and the other a speaker.

In the folder-shaped mobile telephone, the LCD display panel is generally arranged on the inner side of the housing which covers keypad unit so that, at the standby mode wherein the telephone is folded, the LCD display panel cannot be exposed.

For avoiding this inconvenience, the folding mobile telephone which has two LCD display panels arranged on the both sides of the housing which covers keypad unit, had been developed.

However, the two LCD panels make the cover housing of the folding mobile telephone thicker and unhandy necessarily. In addition, the two LCD panel system causes the soaring up of the production cost of mobile phone due to the increase of the component parts and moreover, increases the weight of the telephone considerably.

In the bar-shaped mobile telephone, so called flip type mobile phone, the LCD display panel and key pad unit should be arranged on the same side of single body. Consequently, for reducing the size and weight of the flip type mobile phone, the sizes of LCD panel and/or keypad unit should be decreased as much as possible.

However, the size of LCD panel has been expanded in accordance with the recent trend of the extension of function of mobile phone handset, for example, as a mobile terminal of motion picture contents. In case that the LCD panel of bar-shaped mobile phone is enlarged, the size of keypad unit which should be arranged on same side of bar-shaped mobile phone body, should be down-scaled to an extent that buttons of keypad unit can hardly be pressed by finger tip.

In order to overcome these problems of the prior art and to meet recent needs for extension of the functions of mobile telephone, various type of mobile phone handset have been developed. The Korean patent application No.10-1998-0007166 and the Korean utility model application No.1997-017145 disclose the sliding type mobile phones wherein a cover for keypad is sliding from down to up. In these sliding type mobile phone, LCD display panel still cannot also be showed to outside at standby mode or cannot be enlarged to the extent of the full size of the mobile phone.

For these reasons, a new style mobile phone wherein LCD panel can be enlarged to the extent of full size of mobile phone and can be showed to outside even at standby mode without reduction of size of keypad unit, has been needed for long time.

Disclosure of Invention

Therefore, the object of the present invention is to provide a mobile telephone handset of which LCD display panel can be enlarged to the extent of full size of mobile phone and can be exposed to outside even at standby mode without reduction of size of keypad unit. The above object of the present invention can be achieved by providing a mobile telephone handset, which comprises : a body housing which arranges LCD display panel on its outer surface; a keypad body which carries on keypad unit and can be inserted into said body housing.

Brief Description of the Drawings

The objects and other advantages of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings, in which:

FIG. 1 is a front view of the mobile telephone according to the present invention at the standby mode. FIG. 2 is a side view of the mobile telephone according to the present invention at the standby mode.

FIG. 3 is a front view of the mobile telephone according to the present invention at the service mode.

FIG. 4 is a side view of the mobile telephone according to the present invention at the service mode.

FIG. 5 is a bottom view of the mobile telephone according to the present invention at the standby mode.

Best Mode for Carrying Out the Invention

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings .

The mobile phone handset of the present invention comprises : a body housing which arranges LCD display panel on its outer surface; a keypad body which carries on keypad unit and can be inserted into said body housing.

The body housing of the present mobile phone may contains guide rails on the lower side of the body housing, which guide the insertion of keypad body which carries on keypad unit. The guide rails arranged on lower side of body housing, i.e., the side which is opposite to the outer surface of said body housing whereon LCD display panel (2) is arranged.

The guide rails of this application includes guide housing, guide hinge and various kind of guiding means which have already been known to the public as they can serve for guiding the moving or sliding of a body to be inserted as like the keypad body of the present invention. The antenna (3), speaker (1), microphone (5) , battery (6) and etc. which are required for mobile telephone handset, may be properly arranged on the body housing or/and the keypad body of the present invention. The position of these component parts do not constitute the technical feature of the present invention.

Also, various electronic parts or components for receiving and/or transmitting the electromagnetic wave signal which can serve on wireless telecommunication do not constitute the technical feature of the present invention. The microprocessor, digital signal modem, analog/digital converter, digital/analog converter, receiving MMIC which comprises high frequency wave amplifier, filter, low noise amplifier and mixer, transmitting MMIC which contains up-mixer, driver amplifier, power amplification module of the present invention, are already known to the public and do not constitute the technical feature of the present invention.

These electronic parts, circuit and cable which required for corresponding electromagnetic wave signals, battery for providing electric power thereto and various lamp which indicate the operation status of the mobile phone of the present invention can be mounted properly on said body housing or said LCD panel body.

The conversion from the standby mode (Fig 1) to service mode of the mobile phone of the present invention, is proceeded by drawing said LCD panel body out from said body housing.

At the standby mode of the mobile phone of the present invention, said keypad body are inserted fully or partly into the body housing. At the service mode, said keypad body comes out fully or partly from said body housing to expose their various buttons to outside. In case that the keypad body is partly inserted into said body housing at the standby mode, one or two lows of buttons of keypad unit (4) may expose to outside, which are used for selection of mode, menu, massage search, telephone number search, light, ring signal change and etc., which are frequently used at the standby mode.

The buttons of said keypad exposed to outside at the standby mode, are located on the same side as that of the buttons inserted into said body housing.

Industrial Applicability

The advantages of the mobile telephone handset of the present invention are that the LCD display panel can be enlarged to the extent of full size of mobile phone and thus, can meet the recent need for working as a wireless motion picture terminal, and that LCD panel can be exposed to outside even at standby mode without reduction of size of keypad unit.

While the present invention has been particularly shown and described with reference to particular embodiment thereof, it will be understood by those skilled in the art that various changes in form and details may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims .

Claims

What is claimed is:

1. A mobile telephone handset which comprises: a body housing which arranges LCD display panel on its outer surface; a keypad body which carries on keypad part and can be inserted into said body housing.

2. The mobile telephone handset according to claim!, wherein the conversion between the standby mode and service mode is proceeded by insertion/coming out of said keypad body from/into said body housing.

3. The mobile telephone handset according to claim 1, wherein the buttons of said keypad body are partly exposed to out side at the standby mode.

4. The mobile telephone handset according to claim 3, wherein said buttons of said keypad exposed to outside at the standby mode, are located on the same side as that of the buttons inserted into said body housing.