KR20020071570A - Liquid crystal display device with the plural display panels - Google Patents

Abstract

PURPOSE: A liquid crystal display with a multi-screen is provided to increase the display area by arranging one or more liquid crystal displays on a liquid crystal display panel in a vertical direction and displaying an image signal covering at least two liquid crystal displays. CONSTITUTION: An LCD(Liquid Crystal Display) is comprised of a host computer(100), a first LCD module(200), and a second LCD module(300). The host computer(100) comprises a graphic control unit(110) with a frame memory of m*(n+p) resolution and transmits an image signal(111) to the first and second LCD modules(200,300) through one output port. The first LCD module(200) comprises a first timing control unit(210), a first data driver(220), a first gate driver(230), and a first LCD panel(240) and receives the image signal(111) from the graphic control unit(110) to output it. The second LCD module(300) comprises a second timing control unit(310), a second gate driver(320), and a second LCD panel(330) and receives the image signal(111) from the graphic control unit(110) to output it.

Description

Liquid crystal display device with multiple screens {LIQUID CRYSTAL DISPLAY DEVICE WITH THE PLURAL DISPLAY PANELS}

The present invention relates to a liquid crystal display having a multi-screen, and more particularly, to a liquid crystal display having a multi-screen that can enlarge the display area than before and can easily implement various input means.

Generally, a portable computer system such as a notebook computer is composed of a main body surface having an input means such as a keyboard and a touch pad and a display surface on which an LCD module is mounted.

In the conventional double-sided computer system, since the LCD size is determined according to the size of the main body surface, it is difficult to enlarge the display area, which results in a narrow working environment on the display.

In addition, there is a limitation in that the input means is mounted on a main body such as a keyboard and a touch pad.

Accordingly, the present invention has been made in an effort to solve such a conventional problem, and an object of the present invention is to provide a liquid crystal display having a multi-screen for enlarging a display area of an LCD panel than a conventional display area.

In addition, another object of the present invention is to provide a liquid crystal display having a multi-screen that can easily implement a variety of input means.

1 is a view for explaining a liquid crystal display having a multi-screen according to a first embodiment of the present invention.

FIG. 2 is a diagram for describing a liquid crystal display having a multi screen according to a second embodiment of the present invention.

FIG. 3 is a diagram for describing a liquid crystal display device having multiple screens according to a third exemplary embodiment of the present invention.

FIG. 4 is a diagram for describing a circuit block for setting the mode of FIG. 3.

<Description of the symbols for the main parts of the drawings>

100, 500: host computer 110: graphics control unit

132, 134: D-flip flop136, 138, 140, 142: end gate

200, 300, 600, 700: LCD module 210, 310, 610, 710: timing control unit

220, 620: data driver 230, 320, 630, 720: gate driver

240, 330, 730: LCD panel 345: Input unit for the touch screen

350: touch panel 360: touch panel control unit

345: GUI screen for touch screen

A liquid crystal display having a multi-screen according to one feature for realizing the above object of the present invention,

A main LCD module receiving an image signal from a graphic control unit and outputting a first display at a resolution of m * n (m and n are positive integers); And

And at least one sub LCD module receiving an image signal from the graphic controller and outputting a second display at a resolution of m * p (m and p are positive integers). Here, the graphic control unit preferably includes a frame memory for storing an image signal having a resolution m * (n + p).

In addition, the main LCD module,

A first timing controller which receives an image signal from the graphic controller and controls a display output of the image signal; A first data driver for converting and outputting an image signal provided from the first timing controller; A first gate driver which receives a vertical line start signal and a gate clock signal from the first timing controller and sequentially outputs a plurality of scan signals and outputs a carry signal; And a first LCD panel which is driven on / off according to the scan signal and outputs the first display image with a resolution of m * n.

The sub LCD module may include a second timing controller configured to receive an image signal from the graphic controller and to control a display output; A second gate driver which receives a gate clock signal from the second timing controller, receives a carry signal from the first gate driver, and sequentially outputs a plurality of scan signals; And a second LCD panel configured to receive a plurality of scan signals from the second gate driver, receive a data signal from the first data driver via the first LCD panel, and display the second signal at a resolution of n * p. It is desirable to.

The sub LCD module may further include a touch screen panel for converting position information according to a user's touch into an electrical signal, and the sub LCD module may convert position information converted from the touch screen panel into an electrical signal. The touch panel controller may further include a touch panel controller provided to the graphic controller. Here, the second LCD panel preferably displays at least one or more input means including a keyboard, a touch pad, and a digitizer in a graphical user interface (GUI) type.

The main LCD module may include: a first timing controller configured to receive a first image signal from the graphic controller to control a display output; A first data driver for converting and outputting a plurality of image signals provided from the first timing controller; A first gate driver configured to receive a first vertical line start signal and a first gate clock signal from the first timing controller and sequentially output a plurality of scan signals; And a first LCD panel driven on / off according to the scan signal and outputting the first image signal with a first display at a resolution of m * n.

The sub LCD module may include: a second timing controller configured to receive a second image signal from the graphic controller to control a display output; A second gate driver configured to receive a second vertical line start signal and a second gate clock signal from the second timing controller and sequentially output a gate on signal; And a second LCD panel receiving a gate-on signal from the second gate driver, receiving a data signal from the main LCD module, and secondly displaying the second image signal at a resolution of m * p. .

In addition, the sub LCD module preferably includes a touch screen panel for converting the position information according to the user's touch into an electrical signal, the sub LCD module receives the position information converted into an electrical signal from the touch screen panel It is preferable to further include a touch panel controller provided to the controller. Here, the second LCD panel preferably displays at least one or more input means including a keyboard, a touch pad, and a digitizer in a graphical user interface (GUI) type.

According to the liquid crystal display having such a multi-screen display, one or more other liquid crystal display panels are arranged on a liquid crystal display panel, and an image signal that can cover at least two liquid crystal display panels from an external graphic controller is received and displayed. The area can be enlarged at least twice or more.

Then, embodiments will be described so that those skilled in the art can easily implement the present invention.

1 is a view for explaining a liquid crystal display having a multi-screen according to a first embodiment of the present invention.

Referring to FIG. 1, a liquid crystal display having a multi screen according to a first embodiment of the present invention includes a host computer 100, a first LCD module 200, and a second LCD module 300.

More specifically, the host computer 100 comprises a graphics control unit 110 having a storage frame memory of resolution m * (n + p), the first and second LCD modules via one output port. The image signal 111 is output to (200, 300).

The image signal 111 output to the first LCD module 200 includes R, G, and B data signals R (0: N), G (0: N), and B (0: N) and a frame. The vertical synchronization signal Vsync as the discrimination signal, the horizontal sync signal Hsync as the line discrimination signal, the data enable signal DE and the main which are high level only during the period in which the data is output to indicate the area where the data enters. It is a digital signal including a clock signal MCLK.

In addition, the image signal 111 output to the second LCD module 300 is the same signal as the image signal 111 applied to the first LCD module 200, even if the same image data is supplied to the two LCD modules. The LCD module at the same timing is not applied to the LCD pixel image voltage.

That is, the process of writing the image voltage to the pixels of the second LCD module 200 by the carry signal generated after writing all the image voltages to the pixels of the first LCD module 200 is started vertically (or Even if a double image signal is equally supplied to the two LCD modules 200 and 300, the two LCD modules display different areas.

The first LCD module 200 includes a first timing controller 210, a first data driver 220, a first gate driver 230, and a first LCD panel 240, and images from the graphic controller 110. The signal 111 is received to output the first display.

In more detail, the first timing controller 210 receives the digital data signals R [0: N], G [0: N], and B [0: N] from the graphic controller 110. A signal STH for starting input to the driver 220, a signal LOAD for applying data to the LCD panel, and a clock signal HCLK for shifting data in the first data driver 220 are provided. Output to the first data driver 220.

In addition, the first timing controller 210 may first perform a vertical line start signal STV for commanding the start of the gate on signal, and a gate clock signal Gate clk for sequentially performing the gate on signal on each gate line. Output to the gate driver 230.

The first data driver 220 receives and stores R, G, and B digital data R [0: N], G [0: N], and B [0: N] from the first timing controller 210. When the load signal LOAD is applied to the LCD panel 240, the voltage corresponding to each data is selected and the data voltages D1, D2, D3,... Passes Dm). Of course, the first data driver 220 outputs data voltages D1, D2, D3,..., Dm so that the polarities of the pixels arranged on the first LCD panel 240 are inverted different from each other in every frame. . In this case, the inversion of the pixels so that the polarities are different every frame is due to the general characteristics of the liquid crystal, as is already known.

The first gate driver 230 includes a plurality of scan driver ICs (not shown) including a plurality of shift registers, level shifters, buffers, and the like, and the gate clock signal Gate clk from the first timing controller 210. Receiving a vertical line start signal STV, and receiving voltages Von and Voff from a driving voltage generator (not shown) to sequentially receive the plurality of gate-on signals G1, G2,..., Gp. Outputs to the gate line of the LCD panel 240 opens the way so that the voltage value of each pixel is transferred to the pixel.

Also, the scan driver IC of the last stage among the plurality of scan driver ICs disposed in the first gate driver 230 inputs a carry signal to the second LCD module 300.

The first LCD panel 240 is formed in m data lines, n gate lines arranged orthogonal to the data lines, and formed in a predetermined region lattice arranged between the data lines and the gate lines, one end of which is the gate line. And a second electrode connected to the data line, the other end of which is connected to the data line, and as the gate voltages G1, G2,..., Gn provided from the first gate driver 230 are applied to the corresponding pixel, the first data. The built-in pixel electrode is driven in response to the data voltages D1, D2,..., And Dm provided from the driver 220.

The second LCD module 300 includes a second timing controller 310, a second gate driver 320, and a second LCD panel 330 to receive the image signal 111 from the graphic controller 110. 2 Display output.

In more detail, the second timing controller 310 outputs a gate clock signal Gate clk to the second gate driver 320 to sequentially perform the gate-on signal on each gate line.

In addition, the second gate driver 320 includes a plurality of scan driver ICs (not shown) including a plurality of shift registers, level shifters, buffers, and the like, and a gate clock signal (Gate clk) from the second timing controller 310. The plurality of gate-on signals G1, G2, ..., Gp are supplied with a carry signal from the first gate driver 230 and voltages Von and Voff from a driving voltage generator (not shown). ) Is sequentially output to the gate line of the second LCD panel 330 to open the way for the voltage value of each pixel to be transferred to the pixel.

In addition, the second LCD panel 330 is formed in m data lines, n gate lines arranged orthogonal to the data lines, and formed in a predetermined region in a lattice arrangement between the data lines and the gate lines, and one end of the gate line A pixel electrode connected to the line and the other end connected to the data line, and the gate voltages G1, G2,..., And Gp provided from the second gate driver 320 are sequentially applied to the corresponding pixels. 1 The pixel electrode is driven based on the data voltages D1, D2,..., And Dm provided from the first data driver 220 via the LCD panel 240.

For example, when an image signal of 1024 * 1536 resolution is input from the graphic controller 110, the first LCD module 200 displays an image signal of 1024 * 768 resolution, and the 768 * 768 resolution signal is input from the first gate driver 230. As the pulse signal generated at the 769 line display timing after the first carry signal or the 768 line count is input, the data corresponding to the 1 to 768 lines are ignored and the image data corresponding to the 769th to 1536th lines are displayed.

As described above, according to the first embodiment of the present invention, a second LCD module having the same resolution as that of the first LCD module having a resolution of 1025 (H) * 768 (V), such as a notebook computer, may be used as the first embodiment. By arranging in the vertical direction of the LCD module, an image signal of 1536 gate lines can be applied from a computer main body surface to output image data having a double resolution (1024 (H) * 1536 (V)).

Particularly, in the first embodiment of the present invention, image data of 1024 (H) * 1536 (V) is simultaneously output to the first and second LCD modules 200 and 300 through the one output port, and the first In the LCD module 200, the application of the carry signal to the second LCD module 300 has been described.

In the first embodiment of the present invention, two LCD modules have been described as an example, but three or more LCD modules may also vertically increase the resolution of the LCD screen. Of course, each LCD module receives the same image signal from the graphic controller, and it is obvious that the LCD module until the final stage should apply a carry signal to the LCD module of the next stage.

FIG. 2 is a diagram for describing a liquid crystal display having a multi screen according to a second embodiment of the present invention.

Referring to FIG. 2, a liquid crystal display device having a multiple screen according to a second embodiment of the present invention includes a host computer 500, a first LCD module 600, and a second LCD module 700.

In more detail, the host computer 500 includes the graphic controller 510, and outputs the first image signal 511 to the first LCD module 600 through the first output port, and the second output port. The second image signal 512 is output to the second LCD module 700 through the LCD.

The first image signal 511 may include R, G, and B data signals R [0: N], G [0: N], and B [0: N], a horizontal synchronization signal Hsync, and data. The vertical signal Vsync, which is a digital signal including the enable signal DE and the main clock signal MCLK, in particular, a frame discrimination signal, may receive a scan scan signal equal to the number of gate lines of the first LCD panel 640. Digital signal for output.

In addition, the second image signal 512 is a digital signal including a horizontal sync signal Hsync, a data enable signal DE, and a main clock signal MCLK, and in particular, a vertical sync signal Vsync that is a frame discrimination signal. Denotes a digital signal for outputting a scan scan signal equal to the number of gate lines of the second LCD panel 730.

The first LCD module 600 includes a first timing controller 610, a first data driver 620, a first gate driver 630, and a first LCD panel 640. The first image signal 511 is received to output the first display.

In more detail, the first timing controller 610 firstly receives the digital data signals R [0: N], G [0: N], and B [0: N] from the graphic controller 510. A signal STH for starting input to the driver 620, a signal LOAD for applying data to the LCD panel, and a clock signal HCLK for shifting data in the first data driver 620. The data is output to the first data driver 620.

In addition, the first timing controller 610 may perform a vertical line start signal STV for commanding the start of the gate on signal, and a gate clock signal Gate clk for sequentially performing the gate on signal on each gate line. Output to the gate driver 630.

The first data driver 620 receives and stores R, G, and B digital data R [0: N], G [0: N], and B [0: N] from the first timing controller 610. When the load signal LOAD is applied to command the first LCD panel 640 to be lowered, the voltage corresponding to each data is selected and the data voltages D1, D2, D3,... ., Dm). Of course, the first data driver 620 outputs data voltages D1, D2, D3,..., Dm so that the polarities of the pixels arranged on the first LCD panel 640 are inverted different from each other in every frame. . In this case, the inversion of the pixels so that the polarities are different every frame is due to the general characteristics of the liquid crystal, as is already known.

The first gate driver 630 includes a plurality of scan driver ICs (not shown) including a plurality of shift registers, level shifters, buffers, and the like, and the gate clock signal Gate clk from the first timing controller 610. Receiving a vertical line start signal STV, and receiving voltages Von and Voff from a driving voltage generator (not shown) to sequentially receive the plurality of gate-on signals G1, G2,..., Gp. Outputs to the gate line of the LCD panel 640 opens the way so that the voltage value of each pixel is transferred to the pixel.

The first LCD panel 640 is formed in m data lines, n gate lines arranged orthogonal to the data lines, and in a predetermined area arranged in a lattice arrangement between the data lines and the gate lines, one end of which is the gate line. Is connected to the data line and the other end is connected to the data line, and the first data is applied as the gate voltages G1, G2,..., Gn provided from the first gate driver 630 are applied to the corresponding pixel. The built-in pixel electrode is driven in response to the data voltages D1, D2,..., Dm provided from the driver 620.

The second LCD module 700 includes a second timing controller 710, a second gate driver 720, and a second LCD panel 730 to provide a second image signal 512 from the graphic controller 510. The second display output.

In more detail, the second timing controller 710 outputs a gate clock signal Gate clk to the second gate driver 720 to sequentially perform the gate-on signal on each gate line.

In addition, the second gate driver 720 includes a plurality of scan driver ICs (not shown) including a plurality of shift registers, level shifters, buffers, and the like, and a vertical synchronization start signal STV from the second timing controller 710. And the gate clock signal Gate clk and the voltages Von and Voff are supplied from a driving voltage generator (not shown) to sequentially generate the plurality of gate-on signals G1, G2, ..., Gp. 2 is output to the gate line of the LCD panel 730 to open the way so that the voltage value of each pixel is transferred to the pixel.

In addition, the second LCD panel 730 is formed in m data lines, n gate lines arranged orthogonal to the data lines, and formed in a predetermined region lattice arranged between the data lines and the gate lines, and one end of the gate line A pixel electrode connected to the line, and the other end of the pixel electrode connected to the data line, and the gate voltages G1, G2,..., And Gp provided from the second gate driver 720 are applied to the corresponding pixel. The corresponding pixel electrode is driven in response to the data voltages D1, D2,..., And Dm provided from the first data driver 220 via the first LCD panel 640 of the LCD module 600. .

For example, a second LCD module having the same resolution (at least in the horizontal direction) as the first LCD module having a resolution of 1025 (H) * 768 (V) of a notebook computer may have a vertical direction of the first LCD module. 1536 lines of image signals are output from the computer main body surface to output image data having a double resolution (1024 (H) * 1536 (V)).

In particular, in the second embodiment of the present invention, the first image data of 1024 (H) * {1 (V) to 768 (V)} is output to the first LCD module 600 through two output ports. , Second image data of 1024 (H) * {769 (V) to 1536 (V)} is output to the second LCD module 700.

FIG. 3 is a view for explaining a liquid crystal display having a multi-screen according to a third embodiment of the present invention, mainly showing the display of the screen.

Referring to FIG. 3, the liquid crystal display according to the third exemplary embodiment of the present invention includes a host computer 100 including a graphic controller 110, first and second LCD panels 240 and 330, and a touch panel 350. ) And the touch panel controller 360, and the same reference numerals are used to designate components that perform the same operations as those of FIG. 1, and a detailed description thereof will be omitted.

As mentioned in FIG. 1, the host computer 100 provides the same image signal to the first and second LCD modules 200 and 300, wherein the provided image signal is used for a touch screen as well as a general image signal. It is preferable to further include an image signal for displaying the input unit 345.

The first and second LCD panels 240 and 330 perform the same operation as described above with reference to FIG. 1, and display a graphic user interface (GUI) screen 345 for a touch screen from the graphic controller 110. When an image signal for displaying the input is input, the second LCD panel 330 displays the input unit 345 for the touch screen.

The touch panel 350 is a transparent glass type and is disposed in front of the second LCD panel 330 to detect horizontal and vertical position information according to a user's touch, for example, a finger touch, and detect the detected position information. The signal is converted into an electrical signal and provided to the touch panel controller 360.

In general, a touch screen is a computer display screen that responds to a person's touch, and a method of detecting location information is a resistive method, a surface wave method, or a capacitive method. It is a device that can interact with the computer as the user touches the finger on the letters. Here, the resistive method is stacked in a thin layer of resistive metal, and observes a contact causing a change in current, and then calculates position information by detecting a change in current or resistance.

In addition, the surface wave method uses ultrasonic waves passing over the touch screen panel, and when the panel is contacted at a specific position, some waves are absorbed to calculate position information.

In addition, the capacitive method is coated with a material that stores a charge so that when the panel is touched, a small amount of charge is driven to the point of contact, and circuits located at each corner of the panel measure the charge and calculate position information.

Meanwhile, the touch panel controller 360 provides the graphic controller 110 with location information converted from the touch panel 350 to an electrical signal.

In addition, the touch panel controller 360 may receive a signal for driving the touch panel 350 from the graphic controller 110. When the signal for driving is input, the touch panel controller 360 starts an operation of the touch panel 350 ( start up).

In the above, when the third embodiment of the present invention is described, it has been described that the image signal is input through the one-port output from the host computer and the touch panel is disposed on the second LCD panel. However, the fourth embodiment of the present invention is described. As an example, an image signal may be input from a host computer through a two-port output, and a touch panel may be disposed on the second LCD panel. However, since the fourth embodiment of the present invention can be sufficiently implemented from the above-described second and third embodiments, description thereof will be omitted.

As described above, in the third embodiment of the present invention, a transparent touch screen having the same area is disposed on the second LCD module to simultaneously input various input means such as a keyboard, a touch pad, or a digitizer. Alternatively, each display can be performed by the user directly through the display screen.

By adopting this method, the input means is removed from the display so that the user can enjoy the double display including the first LCD, or display the touch pad which functions as a keyboard or a mouse that occupies only a part of the screen, and the remaining area is It can be used as a workspace to work with a wider display than before.

In addition, a graphic user interface (GUI), which is a user input means displayed on the second LCD panel, may be changed in software to implement a user to select a desired input device. At this time, the input devices displayed on the second LCD panel to operate the touch panel are RAM resident programs of the computer.

RAM-resident programs for various input devices can be selectively displayed or removed using a predetermined switch mounted on the PC, for example, a toggle switch, so that the user can determine the mode configuration of the input device according to the purpose of the work. To help.

That is, at the rising edge of the external switch, the keyboard is displayed in the first reset state (Mode 1), and when the first rising edge is input, the keyboard and the touch pad for operating the mouse are simultaneously displayed ( Mode 2).

In addition, when the second rising edge signal is input, the display of the user input device is removed (mode 3), and when the third rising edge signal is input, the digitizer may be displayed (mode 4). Of course, the fourth rising edge signal is reset again so that the keyboard is displayed.

The user-selectable external switch may be implemented as shown in FIG. 4 by using two D-flip flops having four Q values and four end gates at reset.

4 is a diagram illustrating a circuit block for mode setting according to an embodiment of the present invention.

Referring to FIG. 4, a circuit for setting a mode according to an embodiment of the present invention includes a first D-flip flop (DF / F1) 132, a second D-flip flop (DF / F2) 134, and Comprising the first to fourth end gates (136, 138, 140, 142), the display mode of the input device according to the input switch signal of the first and second D- flip-flop (132, 134) is summarized as a truth table It is as shown in Table 1 below.

Switching input D-F / F1 (132) D-F / F2 (134) MODE Q / Q Q / Q RESET 0 One 0 One One L → H (↑) One 0 0 One 2 L → H (↑) One 0 One 0 3 L → H (↑) 0 One One 0 4 L → H (↑) 0 One 0 One One

As described above, the use of the display screen can be freely set by the user's manipulation of the input means displayed on the LCD panel to correspond to the operation of the touch screen panel through the circuit of FIG. 4.

By allowing the user to change the setting of the screen use, two or more LCD panels arranged vertically can be used in full, and only one LCD panel or a predetermined portion of one LCD panel can be used. You can expand the job display area.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

As described above, according to the present invention, by arranging one or more other liquid crystal display panels in a vertical direction to the liquid crystal display panel, and receiving and displaying an image signal that can cover at least two liquid crystal display panels from an external graphic controller. It can be enlarged at least twice as much as the general display area.

In addition, when the touch screen panel is arranged on any one of the plurality of LCD panels, a display of a graphical user interface (GUI) may be selected as a user selectable input device on the LCD panel corresponding to the touch screen panel.

In addition, the display area of the graphical user interface (GUI), which is a user selectable input device, may be selected by the user, thereby increasing the work display space.

Claims (12)

A main LCD module receiving an image signal from a graphic control unit and outputting a first display at a resolution of m * n (m and n are positive integers); And At least one sub LCD module receiving an image signal from the graphic controller and outputting a second display at a resolution of m * p (m and p are positive integers) Liquid crystal display having a multi-screen comprising a. The method of claim 1, wherein the graphic control unit, And a frame memory for storing an image signal having a resolution m * (n + p). The method of claim 1, wherein the main LCD module, A first timing controller which receives an image signal from the graphic controller and controls a display output of the image signal; A first data driver for converting and outputting an image signal provided from the first timing controller; A first gate driver which receives a vertical line start signal and a gate clock signal from the first timing controller and sequentially outputs a plurality of scan signals and outputs a carry signal; And A first LCD panel driven on / off according to the scan signal and outputting the first display image at a resolution of m * n Liquid crystal display having a multi-screen, characterized in that it comprises a. The method of claim 3, wherein the sub LCD module, A second timing controller which receives an image signal from the graphic controller and controls a display output; A second gate driver which receives a gate clock signal from the second timing controller, receives a carry signal from the first gate driver, and sequentially outputs a plurality of scan signals; And A second LCD panel configured to receive a plurality of scan signals from the second gate driver, receive a data signal from the first data driver via the first LCD panel, and display the second signal at a resolution of n * p; Liquid crystal display having a multi-screen, characterized in that it comprises a. The method of claim 1, wherein the main LCD module, A first timing controller which receives a first image signal from the graphic controller and controls a display output; A first data driver for converting and outputting a plurality of image signals provided from the first timing controller; A first gate driver configured to receive a first vertical line start signal and a first gate clock signal from the first timing controller and sequentially output a plurality of scan signals; And A first LCD panel driven on / off according to the scan signal and outputting the first image signal with a first display at a resolution of m * n Liquid crystal display having a multi-screen, characterized in that it comprises a. The method of claim 5, wherein the sub LCD module, A second timing controller which receives a second image signal from the graphic controller and controls a display output; A second gate driver configured to receive a second vertical line start signal and a second gate clock signal from the second timing controller and sequentially output a gate on signal; And A second LCD panel configured to receive a gate-on signal from the second gate driver, and receive a data signal from the main LCD module to second display the second image signal at a resolution of m * p; Liquid crystal display having a multi-screen, characterized in that it comprises a. The method of claim 4, wherein the sub LCD module, And a touch screen panel for converting positional information according to a user's touch into an electrical signal. The method of claim 7, wherein the sub LCD module, And a touch panel controller configured to receive position information converted into an electrical signal from the touch screen panel and provide the position information to the graphic controller. The method of claim 7 or 8, wherein the second LCD panel, And at least one or more input means including a keyboard, a touch pad, and a digitizer in a graphical user interface (GUI) type. The method of claim 6, wherein the sub LCD module, And a touch screen panel for converting location information according to a user's touch into an electrical signal. The method of claim 10, wherein the sub LCD module, And a touch panel controller configured to receive position information converted into an electrical signal from the touch screen panel and provide the position information to the graphic controller. The method of claim 10 or 11, wherein the second LCD panel, And at least one or more input means including a keyboard, a touch pad, and a digitizer in a graphical user interface (GUI) type.