KR20040019161A - Mobile phone including dual LCD - Google Patents

Abstract

PURPOSE: A mobile communication terminal mounting dual LCD screens is provided to retrieve menus on a supplementary LCD screen attached to an external side of a folder by using a supplementary key of the mobile communication terminal, and to display various information on the supplementary LCD screen, thereby enabling a user to confirm the information without opening the folder. CONSTITUTION: A supplementary key(42) is attached to an external side of a mobile communication terminal in order to input a user command for retrieving menus as confirming text messages. A pressing sensor(43) senses that the supplementary key(42) is pressed. A movement sensor(44) senses that the supplementary key(42) moves in vertical direction. A controller(47) displays various text message information and contents on the retrieved menus on a main LCD screen(45), senses that the supplementary key(42) is pressed or moves through the pressing sensor(43) and the movement sensor(44), and displays the text message information and the contents on a supplementary LCD screen(46).

Description

Mobile communication terminal equipped with dual LCD screens {Mobile phone including dual LCD}

The present invention relates to a mobile communication terminal equipped with a dual LCD screen, and more particularly, to a mobile communication terminal capable of displaying various additional service information on an auxiliary liquid crystal screen attached to an external folder.

Due to the rapid development of the information and communication industry, the functions and types of mobile communication terminals such as mobile communication terminals and PDAs are rapidly developing, and the number of users of mobile communication terminals is also rapidly increasing. In addition, the mobile communication terminal includes a bar type, a flip type, a sliding type, and a folding type. Among them, the size of the mobile communication terminal is small and light, making it easy to carry and making the LCD screen larger than other models. Therefore, the folder type mobile communication terminal, which has the advantage of displaying a lot of information on one screen, has recently become a popular item.

However, the folder type mobile communication terminal which keeps the top folder closed when carrying or waiting for a call has the top folder closed because the liquid crystal display is completely hidden by the top folder when the top folder is closed. Cannot confirm the information displayed on the LCD screen at all. Therefore, in the state where the upper folder is closed, when the user wants to check the information output on the LCD screen, it is inconvenient to open the upper folder and expose the LCD screen to the outside before checking. In particular, information such as reception sensitivity, battery remaining capacity, current time, date, etc. are frequently checked by the user, and each time, opening and closing the upper folder was inconvenient to use.

The conventional dual type mobile communication terminal which improves this point is shown in FIG.

1A is a front view of a conventional dual type mobile communication terminal in which an upper folder is opened.

As shown in FIG. 1A, a lower folder 10 and an upper folder 20 rotated around the hinge portion 24 provided above the lower folder 10 are opened and closed. In addition, a plurality of signal input buttons 12 and a transmitter 14 are provided on a front surface of the lower folder 10 which is exposed to the outside when the upper folder 20 is unfolded. In the front of the upper folder 20, a reception sensitivity 31, a battery remaining capacity 32, a current time 33, a date 34, a user's name 35, and a menu plate 36 indicating various menus are provided. The main liquid crystal screen 30 and the receiver 22 which display etc. are provided. When simply carrying or storing such a mobile communication terminal, the upper folder 20 is rotated and closed about the hinge portion 24 to reduce the overall appearance size. In the call, the upper folder 20 is opened and used so that the signal input buttons 12 and the main LCD screen 30 are exposed as shown in FIG. 1A.

1B is a front view of a conventional dual type mobile communication terminal in which an upper folder is closed.

As shown in FIG. 1B, the information frequently checked by the user such as the reception sensitivity 31, the remaining battery capacity 32, the current time 33, the date 34, and the like, is displayed on the main LCD screen. By displaying on the auxiliary LCD screen 40 provided separately, the information can be confirmed without opening and closing the upper folder.

However, in the case of the conventional dual type mobile communication terminal as described above, since the characters related to the text service, the incoming / outgoing service, and various menu searches are displayed on the main LCD screen inside the folder, the user frequently opens or closes the folder. This occurs and the backlight is driven every time the folder is opened, there is a problem that the power of the battery is unnecessary.

Accordingly, the present invention has been made to solve the above problems, by displaying a variety of additional service information on the sub-liquid crystal screen attached to the outside of the folder, the user provided information provided by the text service, etc. without opening the folder Its purpose is to provide a mobile communication terminal that can be easily checked through the screen.

The present invention enables the user to check the information provided by the text service, etc., without opening the folder through the sub-liquid crystal display attached to the outside of the folder, thereby preventing unnecessary current consumption due to backlight driving due to frequent opening and closing of the folder. The purpose is to provide a mobile communication terminal that can be.

1A and 1B are cross-sectional views of a conventional mobile communication terminal having dual LCD screens.

2 is a block diagram of a mobile communication terminal equipped with a dual LCD screen according to an embodiment of the present invention.

Figure 3a is a side view of a mobile communication terminal equipped with a dual LCD screen according to an embodiment of the present invention.

3B and 3C are sectional views showing an arrangement structure of an auxiliary key in FIG. 3A.

Explanation of symbols on the main parts of the drawings

41: keypad 42: modifier keys

43: key detection unit 44: main LCD screen

45: secondary LCD screen 46: control unit

In order to achieve the above object, the present invention, in the mobile communication terminal for displaying the information on the text information and menu search through the main LCD screen mounted inside the cover, such as a folder and the auxiliary LCD screen attached to the outside of the cover A supplementary key attached to the outside of the mobile communication terminal for inputting user commands related to text message confirmation and menu search; A press detection unit for detecting a press of the auxiliary key; A movement detector for detecting movement of the auxiliary key in a vertical direction; And displaying various text information and menu search contents on the main LCD screen according to a user's instruction input through a keypad, and detecting the pressing and movement of the auxiliary key by the user through the pressing detecting unit and the movement detecting unit. And a controller for displaying various text information and menu search contents on the sub LCD.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

2 is a block diagram of a mobile communication terminal equipped with a dual LCD screen according to an embodiment of the present invention.

Referring to FIG. 2, the mobile communication terminal of the present invention includes a keypad 41 for inputting a user command related to transmission / reception and menu search, an auxiliary key 42 for inputting a user command for menu search, and an auxiliary key. Displaying the pressing detection unit 43 for detecting the pressing of the key 42, the movement detecting unit 44 for detecting the movement of the auxiliary key 42 in the vertical direction, and various text information and text messages In order to display the main LCD screen (LCD) 45 attached to the inside of the folder, the auxiliary LCD screen 46 attached to the outside of the folder to display various text information and text messages, etc. According to the user's instructions, various text information and menu search contents are displayed on the main LCD screen 44, and the pressing and movement of the auxiliary key 42 by the user is detected by the pressing detection unit 44 and the movement detecting unit 45. ) To detect The information relating to the kinds of character information and menu search and a control unit 47 for display on the auxiliary liquid crystal display 46. The

The keypad 41 is used to perform text message checking and menu search while the folder is open. In this case, when the user inputs a command for checking a text message received through the keypad 41 and searching for a menu, the controller 47 displays the text message or menu item requested by the user in the main LCD screen. Display on (45).

The auxiliary key 42 is a key for performing a text message check and menu search while the folder is closed. When the user inputs a command for checking a received text message and menu search through the auxiliary key 42, The controller 47 displays the corresponding text message or menu item on the auxiliary LCD screen 46 located outside the folder according to the user's instruction. Here, when the user performs a menu search or the like, the user selects a corresponding menu item by turning or pressing the auxiliary key 42. In this case, the pressing detector 43 detects the pressing of the auxiliary key 42 to control the controller 47. The motion detector 44 detects the movement of the auxiliary key 42 in the up and down direction and transmits it to the controller 47.

The structure and function of the auxiliary key 42 will now be described in detail with reference to FIGS. 3A to 3C.

3A to 3C, the auxiliary key 42 is formed on the upper left side of the main body of the mobile communication terminal, so that the user can easily press or turn the auxiliary key 42 using the right thumb. However, the auxiliary key 42 is not limited thereto and the location thereof is not implemented.

The auxiliary key 42 has a disk shape and a central shaft 48 is inserted at the center thereof. Since the central shaft 48 is formed at the center of the auxiliary key 42, the user has a disk shaped auxiliary key 42. Can be turned up and down. This is to allow the user to move the selection bar for designating a menu item up and down when searching for a menu through the sub LCD 46 in the state where the folder is closed.

As shown in FIG. 3B, the center shaft 48 is formed in a cylindrical shape so as to protrude by the same length to both sides of the auxiliary key 42 and to be rotated according to the rotation of the auxiliary key 42. In addition, two locking grooves 49 for laying the central shaft 48 are formed symmetrically on both sides of the auxiliary key 42, and the two locking grooves 49 are formed inside the main body of the mobile communication terminal. . In addition, only a portion of the auxiliary key 42 protrudes to the outside, and the other portion is inserted into the main body of the mobile communication terminal.

As such, the auxiliary key 42 is disposed at the center of the center shaft 48 that spans the two locking grooves 49, so that the user can rotate the auxiliary key 42 in the vertical direction. Here, the motion detection unit 44 is formed in the locking groove 49, the movement detection unit 44 is attached to contact a portion of the central axis 48. The motion detector 44 is electrically connected to the controller 47.

Accordingly, when the user rotates the auxiliary key 42 in the up and down direction, the center shaft 48 rotates together with the auxiliary key 42, such that the motion detecting unit 44 assists the user through the rotation of the center shaft 48. The up and down rotation of the key 42 is sensed and transmitted to the controller 47.

Here, when the upward rotation of the auxiliary key 42 is detected through the motion detector 44, the controller 47 moves the selection bar displayed on the auxiliary LCD screen 46 upward. In addition, when the anti-rotation of the auxiliary key 42 is detected through the motion detector 44, the controller 47 moves the selection bar displayed on the auxiliary LCD screen 46 downward.

Next, the pressing structure of the auxiliary key 42 will be described in detail with reference to FIG. 3C.

As shown in FIG. 3C, a space 51 having a predetermined area is formed under the two locking grooves 49 on which the central shaft 48 extends, and a spring 50 is formed at the center of the space 51. Is formed. The spring 50 is formed in contact with the bottom surface of the space 51 and the lower portion of the locking groove 49. Here, the lower portions of the two locking grooves 49 are implemented to be detached in the reaction direction of the spring 50.

Then, the pressing detection unit 43 is spaced apart from the lower portion of the locking groove 49 by a predetermined interval is formed in a predetermined portion of the space 51, it is formed to be spaced apart from the spring (50). The pressing detection unit 43 thus formed is electrically connected to the control unit 47.

As such, by attaching the spring 50 to the space 51 formed at the lower portion of the locking groove 49, when the user presses the auxiliary key 42, the center shaft 48 attached to the auxiliary key 42 is spring-loaded. It is pushed into the space 51 by the elasticity of 50. As shown in FIG. At this time, the lower portion of the locking groove 49 pushed into the space 51 is in contact with the pressing detection unit 44, which causes the control unit 47 to press the auxiliary key 42 through the pressing detection unit 44. It will detect that it is missing.

Here, when the user rotates the auxiliary key 42 in the up and down direction to fix the selection bar to a specific menu item on the auxiliary LCD screen 46 and then presses the auxiliary key 42, the control unit 47 presses the detection unit 44. Detects the pressing of the auxiliary key 42 through the display and displays the contents of the menu item designated by the selection bar.

Therefore, the present invention performs the text message check and menu search using the auxiliary key 42 attached to the outside of the folder without opening the folder as described above, so that the battery power is turned on due to backlight driving due to frequent opening of the folder. Unnecessary consumption can be prevented.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As described above, the present invention has the following effects by displaying various additional service information on the sub-liquid crystal screen attached to the outside of the folder.

First, the user can be convenient by performing a menu search or the like on an auxiliary LCD screen attached to the outside of the folder by using an auxiliary key attached to the outside of the mobile communication terminal.

Second, by displaying various additional service information on the sub-liquid crystal screen attached to the outside of the folder, the user can easily check the information provided by the text service, etc. without opening the folder, through the sub-liquid crystal screen, thereby significantly improving the productability of the product. You can.

Third, the user can check the information provided by the text service, etc., without opening the folder through the sub-liquid crystal display attached to the outside of the folder, thereby preventing unnecessary current consumption by backlight driving due to frequent opening and closing of the folder. have.

Claims (8)

In the mobile communication terminal for displaying the information on the text information and menu search through the main LCD screen mounted inside the cover, such as a folder and the auxiliary LCD screen attached to the outside of the cover, An auxiliary key attached to the outside of the mobile communication terminal for inputting user commands for checking text messages and searching menus; A press detection unit for detecting a press of the auxiliary key; A movement detector for detecting movement of the auxiliary key in a vertical direction; And According to the user's instructions input through the keypad to display a variety of text information and menu search information on the main LCD screen and to detect the pressing and movement of the auxiliary key by the user through the pressing detection unit and the motion detection unit Control to display various text information and menu search on the sub LCD Mobile communication terminal comprising a. The method of claim 1, The controller is configured to move the selection bar displayed on the auxiliary LCD screen upward when the upward rotation of the auxiliary key is detected through the motion detector. And the controller is configured to move the selection bar displayed on the auxiliary LCD screen downward when an anti-rotation of the auxiliary key is detected through the motion detector. The method of claim 1, The auxiliary key has only a certain portion protruding to the outside and the other portion is made of a disc shape inserted into the main body of the mobile communication terminal, the center axis is inserted in the center, the center axis is the same length to both sides of the auxiliary key Mobile communication terminal, characterized in that formed in a cylindrical shape so as to protrude and rotate in accordance with the rotation of the auxiliary key. The method of claim 3, wherein Two locking grooves are formed symmetrically on both sides of the auxiliary key for laying over the central axis, the two locking grooves are formed inside the main body of the mobile communication terminal. The method of claim 4, wherein The motion detection unit is formed in the engaging groove, the movement detection unit is a mobile communication terminal, characterized in that attached to contact with a portion of the central axis and electrically connected to the control unit. The method of claim 3, wherein A space of a predetermined area is formed in the lower portions of the two locking grooves on which the central shaft extends, and a spring is formed in the central portion of the space, and the spring is formed to contact the bottom surface of the space and the lower portion of the locking groove. Mobile communication terminal, characterized in that. The method of claim 6, The lower portion of the locking groove is a mobile communication terminal, characterized in that detachable in the reaction direction of the spring by pressing the auxiliary key. The method of claim 7, wherein And the pressing detecting unit is spaced apart from the lower portion of the locking groove by a predetermined interval and spaced apart from the spring in the space and electrically connected to the control unit.