GB2343324A - Folder-type mobile phone provided with a double-panel lcd - Google Patents

Folder-type mobile phone provided with a double-panel lcd Download PDF

Info

Publication number
GB2343324A
GB2343324A GB9925608A GB9925608A GB2343324A GB 2343324 A GB2343324 A GB 2343324A GB 9925608 A GB9925608 A GB 9925608A GB 9925608 A GB9925608 A GB 9925608A GB 2343324 A GB2343324 A GB 2343324A
Authority
GB
United Kingdom
Prior art keywords
lcd
folder
mobile phone
panels
panel
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
GB9925608A
Other versions
GB2343324B (en
GB9925608D0 (en
Inventor
Seog-Geun Lee
Jeon-Man Park
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 KR1019980046800A external-priority patent/KR20010053642A/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of GB9925608D0 publication Critical patent/GB9925608D0/en
Publication of GB2343324A publication Critical patent/GB2343324A/en
Application granted granted Critical
Publication of GB2343324B publication Critical patent/GB2343324B/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
    • H04M1/0206—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
    • 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
    • H04M1/0241—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call
    • H04M1/0245—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call using open/close detection
    • 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

Abstract

Two lcd's formed back to back provided in a folder-type mobile phone, mounted within the telephone whereby at least one face of the double-panel lcd is exposed even upon closing the folder. The lcd's can either be driven in parallel with the same driver or a sensor can detect the position of the folder and generates a control signal to drive the appropriate driver of the visible lcd.

Description

FOLDER-TYPE MOBILE PHONE PROVIDED WITH A DOUBLE-PANEL LCD BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folder-type mobile phone, and more particularly a novel arrangement of an LCD provided in a folder-type mobile phone.
2. Description of the related art Folder type mobile phones include a folder part which acts as a lid or cover for a part of the body of the phone, usually for the part including the keypad. The folder is usually attached by means of a hinge to the body of the phone so that it can be moved between an open position in which the body of the phone (in particular, the keypad) is exposed and a closed position in which the body of the phone isw covered by the folder. The folder may also include a microphone or speaker. Conventionally, a folder type mobile phone is designed so that the LCD is exposed (and therefore viewable by the user) only when the folder is opened. Hence, the folder must necessarily be opened in order for the user to view the display which carries information relating, for example, to the operational state of the mobile phone such as the antenna icon for displaying the received electric field strength, present time, outreaching available communication area, battery charge remaining, various functional setting modes, etc.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a folder-type mobile phone with a two-panel LCD that enables the user to view the operational state of the mobile phone even when the folder is closed.
According to a first aspect of the present invention there is provided a folder type mobile phone comprising first and second LCD panels, and an LCD drive for driving the first and second LCD panels, wherein the first and second LCD panels are connected in parallel with the LCD drive and said first and second LCD panels are mounted on the folder such that at least one of said panels is exposed even when the folder is in a closed position.
In one embodiment of this aspect of the invention the first and second LCD panels are respectively mounted on inner and outer surfaces of the folder. The first and second LCD panels may be arranged in a direct back-toback arrangement or may be offset from one another.
Preferably the folder includes a through aperture in which said first and second panels are mounted in backto-back relation.
According to a second aspect of the present invention there is provided a folder type mobile phone comprising first and second LCD panels, first and second LCD drives for respectively driving the first and second LCD panels, a sensor operative to detect the position of the folder and to generate an open-state or a closed state signal in accordance with the open or closed position of said folder, and a controller operative to generate a respective first LCD drive control signal or a second LCD drive control signal in accordance with the said open-state or closed-state signal, wherein said first LCD drive drives the first LCD panel in response to the first LCD drive control signal and the second LCD drive drives the second LCD panel in response to the second LCD drive control signal.
In a particularly preferred embodiment of this second apsect of the invention, the first and second LCD panels are arranged on opposed sides of the folder such that at least one of the panels is exposed even when the folder is in a closed condition.
Preferably the panel exposed when the folder is in a closed condition is operative to provide a display indicative of the operational state of the phone.
According to a third aspect of the present invention, there is provided a folder-type mobile phone including an integral display unit comprising first and second opposed LCD panels wherein the integral display unit is mounted in a through aperture formed in the folder whereby at least one LCD panel of the display unit is exposed even when the folder is in its closed condition.
Most prefereably, the individual elements of the first and second LCD panels of the display unit are formed symmetrically on respective opposed sides of a common reflector plate.
In one embodiment of this third aspect of the invention, the first and second LCD panels are connected in parallel to a single LCD drive.
In an alternative embodiment of this third aspect of the invention, the first and second LCD panels are connected to respective first and second LCD drives.
The present invention will now be described more specifically by way of example only with reference to the attached drawings.
BRIEF DESCRIPTION OF THE ATTACHE DRAWINGS Fig. 1 is a perspective view of the folder-type mobile phone of the invention with its folder opened; Fig. 2 is a perspective view of the folder-type mobile phone of the invention with its folder closed; Fig. 3 is a block diagram illustrating a circuit for driving a double-panel LCD provided in a folder-type mobile phone according to an embodiment of the present invention; Fig. 4 is a block diagram illustrating a circuit for driving a double-panel LCD provided in a folder-type mobile phone according to another embodiment of the present invention; Fig. 5 is a flow chart illustrating the process of controlling the circuit of Fig. 4; Fig. 6 is a block diagram illustrating a circuit for driving a double-panel LCD provided in a folder-type mobile phone according to a further embodiment of the present invention; and Fig. 7 is a cross sectional view of a double-panel LCD formed according to the further embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to Figs. 1 and 2, a folder-type mobile phone comprises a main body 100, folder 200, and a hinge 300 for enabling the folder 200 to turn around its central axis"A". To this end, a pair of side arms 301 are formed on the upper edge of the main body 100 so as to cooperate with respective ends of the hinge 300. A key pad 12 is arranged on the upper surface of the main body 100, including alphanumeric keys, power key and various functional keys for data input. The microphone 101 is arranged below the key pad.
The ear piece with a speaker 201 is arranged in the upper part of the folder 100, and a double-panel LCD is arranged in the illustrated example in a through opening thereof. The double-panel LCD comprises a first LCD panel 16 arranged to face outwardly from the inner side of the folder 100, and a second LCD panel 18 arranged to face outwardly from the outer side of the folder 100, so that the data may be displayed on the first and/or second LCD panel 16 or 18 according to whether the folder is opened or closed. The first and second LCD panels need not necessarily be arranged directly back-to-back but may be offset with respect to each other.
Referring to Fig. 3, the CPU 10 controlling the whole functions of the mobile phone generates control signals for driving the LCD. The key pad 12 includes a plurality of alphanumeric keys and various functional keys. An LCD drive 14 is provided to drive the first and second LCD panels 16 and 17 to display information relating, for example, to the operational state of the mobile phone and dialing data in response to the control signals from the CPU 10. An RF circuit 20 modulates the sound signals inputted through the microphone 101 with a radio frequency, and demodulates the RF signals received through the antenna into the sound signals outputted through the speaker 201.
Describing the operation of the mobile phone according to the present embodiment in connection with Figs. 1 to 3, when the folder 200 is opened, and the power key pressed, information concerning the electric field strength received through the antenna is processed through the RF circuit 20, delivered to the CPU 10 to drive the LCD drive 14, which enables the first and second LCD panels 16 and 18 to display the icons representing the antenna and the received electric field strength together with other information such as the present time and date and the specific day of the week. In addition, the functional modes presently set may be displayed on the first and second LCD panels. In this case, the user may view all the information displayed on the first LCD panel 16.
However, if the folder 200 is closed, the information may be viewed through the second LCD panel 18.
The embodiment illustrated in Figs. 4 and 5 is different from the previous embodiment in that the first and second LCD panels are respectively driven by first and second LCD drives 15 and 17 according to first and second LCD drive control signals generated from the CPU 10. In addition, there is provided a sensor 22 for detecting the position of the folder 200 of the mobile phone to generate an open-or a closed-state signal representing whether the folder 200 is in an open position or a closed position. The open-and closed-state signals are delivered to the CPU 10. Thus, in operation, the sensor 22 generates the open-or closed-state signal applied to the CPU 10 to control the first or second LCD drive 15 or 17 according to whether the folder 200 is closed or open.
Thus, depending on the position of the folder 200, the first or second LCD display panel 16 or 18 displays the information representing the operational state of the mobile phone such as the received electric field strength, time, date, dialing number, various functional modes, etc.
Referring more specifically to Fig. 5, when the power key of the main body 100 is pressed in step 201 so that the phone is turned on, the process goes to step 202 where the CPU 10 determines according to the state signal from the sensor 22 whether the folder 200 is closed or open.
Thus, if the folder 200 is closed, the CPU 10 works the first LCD drive 15 to drive the first LCD panel 16 to display the information. However, if the folder 200 is open, the CPU 10 works the second LCD drive 17 to drive the second LCD panel 18 to display the information.
Hence, the user may view the information by means of the first or second LCD panel regardless of whether the folder 200 is closed or open.
The further embodiment of Fig. 6 differs from the two previous embodiments in that the first LCD panel is integrally formed with the second LCD panel so as to form a single unit double-panel LCD. Namely, in order to obtain the double-panel LCD 15, the previous embodiments have the first and second LCD panels separately formed while the present embodiment has the first and second panels integrally structured into a single unit. This single unit comprising the double-panel LCD is driven by a single LCD drive 14. Specifically describing the structure of the present double-panel LCD in connection with Fig. 7, the two LCD panels are integrally laid on respective sides of a central reflector plate 50.
Sequentially deposited on one side of the reflector plate 50 are a back light plate 51, lower glass plate 53, lower electroluminescent plate 55, liquid crystal layer 57, upper electroluminescent plate 59 and upper glass plate 61. Likewise, similar layers 52,54,56,58 and 60 are sequentially deposited on the other side of the reflector plate 50. Thus, the present embodiment requires only one reflector plate, which is different from the previous embodiments which require two reflector plates. This' reduces the thickness and weight of the mobile phone. Of course, the single unit of the double-panel LCD of the present embodiment may be applied in the embodiment of Fig. 4. That is, the first and second LCD panels may respectively be driven by first and second LCD drives in dependance on signals received by the CPU from a senor for detecting the open or closed position of the folder.
While the present invention has been described in connection with specific embodiments accompanied by the attached drawings, it will be readily apparent to those skilled in the art that various changes and modifications may be made thereto without departing the gist of the present invention.

Claims (11)

  1. CLAIMS 1. A folder type mobile phone comprising first and second LCD panels, and an LCD drive for driving the first and second LCD panels, wherein the first and second LCD panels are connected in parallel with the LCD drive and said. first and second LCD panels are mounted on the folder such that at least one of said panels is exposed even when the folder is in a closed position.
  2. 2. A mobile phone as claimed in claim 1 wherein said first and second LCD panels are respectively mounted on inner and outer surfaces of the folder.
  3. 3. A mobile phone as claimed in claim 1 wherein the folder includes a through aperture in which said first and second panels are mounted in back-to-back relation.
  4. 4. A folder type mobile phone comprising first and second LCD panels, first and second LCD drives for respectively driving the first and second LCD panels, a sensor operative to detect the position of the folder and to generate an open-state or a closed state signal in accordance with the open or closed position of said folder, and a controller operative to generate a respective first LCD drive control signal or a second LCD drive control signal in accordance with the said open state or closed-state signal, wherein said first LCD drive drives the first LCD panel in response to the first LCD drive control signal and the second LCD drive drives the second LCD panel in response to the second LCD drive control signal.
  5. 5. A mobile phone as claimed in claim 4 wherein the first and second LCD panels are arranged on opposed sides of the folder such that at least one of the panels is exposed even when the folder is in a closed condition.
  6. 6. A mobile phone as claimed in any of claims 1 to 5 wherein the panel exposed when the folder is in a closed condition is operative to provide a display indicative of the operational state of the phone.
  7. 7. A folder-type mobile phone including an integral display unit comprising first and second opposed LCD panels wherein the integral display unit is mounted in a through aperture formed in the folder whereby at least one LCD panel of the display unit is exposed even when the folder is in its closed condition.
  8. 8. A mobile phone as claimed in claim 7 wherein the individual elements of the first and second LCD panels of the display unit are formed symmetrically on respective opposed sides of a common reflector plate.
  9. 9. A mobile phone as claimed in claim 8 wherein the first and second LCD panels are connected in parallel to a single LCD drive.
  10. 10. A mobile phone as claimed in claim 8 wherein the first and second LCD panels are connected to respective first and second LCD drives.
  11. 11. A mobile phone substantially as hereinbefore described with reference to any of Figures 1 to 7.
GB9925608A 1998-11-02 1999-10-29 Folder-type mobile phone provided with a double-panel LCD Expired - Fee Related GB2343324B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019980046800A KR20010053642A (en) 1998-11-02 1998-11-02 Double-sided liquid crystal display apparatus in folder-type mobile phone
KR1019980054517A KR20010000974A (en) 1998-11-02 1998-12-11 Both-sides liquid crystal display in cellular phone with folder type

Publications (3)

Publication Number Publication Date
GB9925608D0 GB9925608D0 (en) 1999-12-29
GB2343324A true GB2343324A (en) 2000-05-03
GB2343324B GB2343324B (en) 2001-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9925608A Expired - Fee Related GB2343324B (en) 1998-11-02 1999-10-29 Folder-type mobile phone provided with a double-panel LCD

Country Status (4)

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KR (1) KR20010000974A (en)
CN (1) CN100348061C (en)
DE (1) DE19952682B4 (en)
GB (1) GB2343324B (en)

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GB2358985A (en) * 1999-11-05 2001-08-08 Matsushita Electric Ind Co Ltd Dual display folding portable telephone
EP1156640A2 (en) * 2000-05-17 2001-11-21 Nec Corporation Portable folding communication unit
GB2364462A (en) * 2000-02-23 2002-01-23 Motorola Inc A mobile telephone with a dual-sided liquid crystal display.
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WO2000059179A1 (en) * 1999-03-31 2000-10-05 Sony Electronics Inc. Electronic device having a reversible display
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GB2358985A (en) * 1999-11-05 2001-08-08 Matsushita Electric Ind Co Ltd Dual display folding portable telephone
US6807275B1 (en) 1999-11-05 2004-10-19 Matsushita Electric Industrial Co., Ltd. Folding portable telephone apparatus
GB2358758B (en) * 1999-11-05 2004-02-25 Matsushita Electric Ind Co Ltd Folding portable telephone apparatus
GB2364462A (en) * 2000-02-23 2002-01-23 Motorola Inc A mobile telephone with a dual-sided liquid crystal display.
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EP1156640A3 (en) * 2000-05-17 2003-09-24 Nec Corporation Portable folding communication unit
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GB2366680A (en) * 2000-09-06 2002-03-13 Ericsson Telefon Ab L M display apparatus
GB2366680B (en) * 2000-09-06 2004-03-03 Ericsson Telefon Ab L M Display apparatus
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EP1191768A3 (en) * 2000-09-22 2004-07-14 Alcatel Method for displaying images on a screen , display device and telecommunication terminal therefor
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CN1253461A (en) 2000-05-17
DE19952682B4 (en) 2005-06-09
CN100348061C (en) 2007-11-07
GB2343324B (en) 2001-05-30
GB9925608D0 (en) 1999-12-29
KR20010000974A (en) 2001-01-05

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