Patent Publication Number: US-2006017666-A1

Title: Multi-panel display device and method of driving the same

Description:
This application claims the benefit of Korean Patent Applications No. P2004-56496 and P2004-56497 filed in Korea on Jul. 20, 2004, which is hereby incorporated by reference.  
     BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to a multi-panel display device, and more particularly, to a multi-panel display device and method of driving the same that is adaptive of having a multi-panel and simplifying a driving circuit thereof.  
      2. Description of the Related Art  
      Recently, there have been developed various flat panel display devices reduced in weight and bulk that is capable of eliminating disadvantages of a cathode ray tube (CRT). Such flat panel display devices include a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP) and an electro-luminescence (EL) display, etc. device.  
      In such flat panel display devices, the PDP has the most advantage for making a large dimension screen because its structure and manufacturing process are simple, but has a drawback in that it has low light-emission efficiency and large power consumption. The LCD has a difficulty in making a large dimension screen because it is fabricated by a semiconductor process, but has an expanded demand as it is mainly used for a display device of a notebook personal computer. However, the LCD has a drawback in that it has a difficulty in making a large dimension screen and it has large power consumption due to a backlight unit. Also, the LCD has characteristics of a large light loss and a narrow viewing angle due to optical devices such as a polarizing filter, a prism sheet, a diffuser and the like. On the other hand, the EL display device is largely classified into an inorganic EL device and an organic EL device depending upon a material of a light-emitting layer. When compared with the above-mentioned display devices, the EL display device has advantages of a fast response speed, large light-emission efficiency, a large brightness and a large viewing angle. The organic EL display device can display a picture at approximately 10[V] and a high brightness of ten thousands of [cd/m 2 ].  
      The organic EL display device comprises a display panel having an organic electro luminescence cell (OLED cell) in a matrix type.  
       FIG. 1  is a schematic section view illustrating an organic EL cell.  
      In the organic EL cell, as shown in  FIG. 1 , there is formed an anode  2  formed of transparent conductive material on a glass substrate  1 , and there are deposited a hole injection layer  3 , a light-emitting layer  4  formed of organic material, an electron injection layer  5  and a cathode  6  formed of metal on top of it.  
      If an electric current is flowed between the anode  2  and the cathode  6 , then holes in the hole injection layer  3  and electrons in the electron injection layer  5  respectively progress toward the light-emitting layer  4  to be combined in the light-emitting layer. Then, the light-emission layer  4  is excited and transferred by combing the hole and the electrons to generate a visible light.  
       FIG. 2  is a circuit diagram of an organic EL display device, and  FIG. 3  is a driving waveform diagram showing the organic EL display device in  FIG. 2 .  
      Referring to  FIG. 2 , the organic EL display device includes: data lines DL 1  to DLm and scan lines SL 1  to SLn, which are crossing each other; and an OLED cell  10  arranged in a matrix type for each cross.  
      The organic EL display device further includes: a constant current source  11  for supplying current to the data lines DL 1  to DLm; and switching devices  12  and  13  for supplying a scan high voltage Vhigh and a ground voltage GND to each of scan lines SL 1  to SLn.  
      The switching devices  12  and  13  connected to the scan lines SL 1  to SLn, as shown in  FIG. 3 , sequentially apply a scan pulse SCAN to the first scan line SL 1  to nth scan line SLn to select the scan line SL 1  (herein, i is any one number of 1 to n) where data are displayed. To this end, the switching devices  12  connected to the ground voltage source GND are turned on in response to a first control signal T 1  to apply the scan pulse SCAN of the ground voltage GND to the selected scan lines SL 1  to SLn. A data pulse DATA is synchronized with the scan pulse SCAN to be applied as a positive current to the data lines DL 1  to DLm. In this case, the switching devices  13  connected to a scan high voltage source Vhigh is turned on in response to a second control signal T 2  to apply a scan pulse of the scan high voltage Vhigh to a non-selected scan line. When a data current is supplied to the data lines DL 1  to DLm, and at the same time, the ground voltage is supplied to the scan lines SL 1  to SLn, the OLED cell  10  is emitted by flowing current by a forward direction bias.  
      Such an organic EL display device has been applied in a various fields along with LCD as a flat panel display device due to advantages such as its low power consumption and its high brightness.  
       FIG. 4  is a block diagram showing a composition of a display device having a two-way panel as an example of a related art multi-panel display.  
      Referring to  FIG. 4 , the display device having the related art two-way panel includes a LCD module  20  and an organic EL display module  21 .  
      The LCD module  20  of the display device having the two-way panel includes: data lines DL 11  to DL 1   m  and gate lines GL 11  to GL 1   n ; a liquid crystal display panel  22  having a liquid crystal cell and a thin film transistor TFT for each pixel area defined by a cross of both the data lines DL 11  to DL 1   m  and the gate lines GL 11  to GL 1   n ; a data driver  26  for supplying a data pulse to the data lines DL 11  to DL 1   m  and a gate driver  28  for supplying a gate pulse to the gate lines GL 11  to GL 1   n ; and a timing controller  24  for controlling the data driver  26  and the gate driver  28 .  
      The TFT supplies data on the data lines DL 11  to DL 1   m  to the liquid crystal cell in response to the gate pulse from the gate lines GL 11  to GL 1   n.    
      The organic EL display module  21  of the display device having the two-way panel includes: data lines DL 21  to DL 2   m  and scan lines SL 21  to SL 2   n ; a liquid crystal display panel  23  having an OLED cell formed in a matrix type for each cross of both the data lines DL 21  to DL 2   m  and scan lines SL 21  to SL 2   n ; a data driver  27  for supplying a data pulse to the data lines DL 21  to DL 2   m  and a scan driver  29  for supplying a scan pulse to the scan lines SL 21  to SL 2   n ; and a timing controller  25  for controlling the data driver  27  and the scan driver  29 .  
      The data pulse is supplied to the data lines DL 21  to DL 2   m , in synchronized with the scan pulse from the scan lines SL 12  to SL 2   n , and at the same time, a current is flowed, to thereby emit OLED cell.  
      As mentioned above, in a case that the LCD module  20  and the organic EL display module  21  as a display device having a two-way panel, an optimum condition of voltage, current, and a control signal is different from each other. Accordingly, it is required that driving circuits are respectively controlled differently from each other. Therefore, there is a disadvantage of a large cost for circuits and large power consumption.  
      Another example of the related art display device having the multi-panel is showed in  FIG. 5 .  
      The display device having the two-way panel in  FIG. 5  includes a first organic EL display module  30  and a second organic EL display module  31 .  
      Referring to  FIG. 5 , the first and the second organic EL display modules  30  and  31  include: data lines DL 11  to DL 2   m  and scan lines SL  11  to SL 2   n , which respectively cross each other; and an OLED cell formed in a matrix type for each cross of both the data lines DL 11  to DL 2   m  and the scan lines SL 11  to SL 2   n.    
      The first organic EL display module  30  of the display device having the two-way panel includes: a first data driver  36  for supplying a data pulse to the data lines DL 11  to DL 1   m  of the first organic EL display panel  32 ; a first scan driver  38  for supplying a scan pulse to the scan lines SL 11  to SL 1   n ; and a first timing controller  34  for supplying a control signal to the first data driver  36  and the first scan driver  38 .  
      The second organic EL display module  31  of the display device having the two-way panel includes: a second data driver  37  for supplying a data pulse to the data lines DL 21  to DL 2   m  of the second organic EL display panel  33 ; a second scan driver  39  for supplying a scan pulse to the scan lines SL 21  to SL 2   n ; and a second timing controller  35  for supplying a control signal to the second data driver  37  and the second scan driver  39 .  
      However, in a case of using the first and the second organic EL display modules as a display device having the related art two-way panel as shown in  FIG. 5 , the first and the second organic display panels are respectively driven by the driving circuits different from each other, accordingly, it is possible to increase a cost for driving the first and the second organic display panels and to increase power consumption. In addition, there is a disadvantage in that a bulk of the display device having the two-way panel becomes large.  
     SUMMARY OF THE INVENTION  
      Accordingly, it is an object of the present invention to provide a multi-panel display device and method of driving the same that is adaptive of having a multi-panel and simplifying a driving circuit thereof.  
      In order to achieve these and other objects of the invention, a multi-panel display device according to an embodiment of the present invention includes: a plurality of display panels to which data lines are commonly connected; and a data driver which timely divides data to supply it to the data lines.  
      A multi-panel display device according to an embodiment of the present invention includes: a N number of display panels, wherein N is a positive integer; a N/n number of display panel groups to which data lines of the N number of display panels, wherein n is a positive integer smaller than N, are commonly connected; and a data driver which timely divides data in each of the N/n number of display panel groups to supply it to the data lines.  
      The display panel includes an organic electro luminescence display panel.  
      The plurality of display panels includes scan lines respectively crossing the data lines.  
      The multi-panel display device further includes a scan driver which independently drives the scan lines in response to each of the plurality of display panels.  
      The scan driver includes: an odd scan driver which is located at one side of the display panel and drives a predetermined scan line of the scan lines; and an even scan driver which is located at another side of the display panel and drives the rest scan lines.  
      A multi-panel display device according to an embodiment of the present invention includes: a plurality of display panels, in which a plurality of data lines respectively cross a plurality of scan lines and the scan lines are commonly connected to the plurality of display panels; and a scan driver which supplies a scan pulse to the scan lines.  
      A multi-panel display device according to an embodiment of the present invention includes: a N number of display panels, wherein N is a positive integer; a N/n number of display panel groups to which scan lines of the N number of display panels, wherein n is a positive integer smaller than N, are commonly connected; and a scan driver which supplies a scan pulse in each of the N/n number of display panel groups to the scan lines.  
      The display panel includes an organic electro luminescence display panel.  
      The plurality of display panels includes data lines respectively crossing the scan lines.  
      The multi-panel display device further includes a data driver which independently drives the data lines in response to each of the plurality of display panels.  
      A method of driving a multi-panel display device according to an embodiment of the present invention includes: commonly connecting data lines to a plurality of display panels; and timely dividing data to supply it the data lines.  
      A method of driving a multi-panel display device according to an embodiment of the present invention includes: commonly connecting data lines of a N number of display panels, wherein N is a positive integer, by a n number of display panels unit, wherein n is a positive integer smaller than N, to providing a N/n number of display panel groups; and timely dividing data in each of the N/n number of display panel groups to supply it to the data lines.  
      The method according further includes scanning any one of display panels in response to the timely divided data.  
      A method of driving a multi-panel display device according to an embodiment of the present invention includes: commonly connecting scan lines to a plurality of display panels; and supplying a scan pulse to the scan lines.  
      A method of driving a multi-panel display device according to an embodiment of the present invention includes: commonly connecting scan lines of a N number of display panels, wherein N is a positive integer, by a n number of display panels unit, wherein n is a positive integer smaller than N, to providing a N/n number of display panel groups; and supplying a scan pulse in each of the N/n number of display panel groups to the scan lines.  
      The method further includes supplying data to the plurality of display panels in response to the scan pulse. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      These and other objects of the invention will be apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings, in which:  
       FIG. 1  is a schematic section view illustrating an organic EL cell;  
       FIG. 2  is a circuit diagram of an organic EL display device;  
       FIG. 3  is a driving waveform diagram of the organic EL display device shown in  FIG. 2 ;  
       FIG. 4  is a block diagram showing a composition of a related art multi-panel display device;  
       FIG. 5  is block diagram showing another multi-panel display device of the related art;  
       FIG. 6  is a block diagram showing a composition of a multi-panel organic EL display device according to a first embodiment of the present invention;  
       FIG. 7  is a driving waveform diagram of the multi-panel organic EL display device shown in  FIG. 6 ;  
       FIG. 8  is a block diagram showing a composition of a multi-panel organic EL display device according to a second embodiment of the present invention;  
       FIG. 9  is a block diagram showing a composition of a multi-panel organic EL display device according to a third embodiment of the present invention;  
       FIG. 10  is a block diagram showing an example in which the multi-panel organic EL display device of  FIG. 9  is applied to a folder mobile phone;  
       FIG. 11  is a block diagram showing a block diagram showing a composition of a multi-panel organic EL display device according to a fourth embodiment of the present invention;  
       FIG. 12  is a driving waveform of the multi-panel organic EL display device shown in  FIG. 11 ; and  
       FIG. 13  is a block diagram showing a composition of a multi-panel organic EL display device according to a fifth embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.  
      Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to FIGS.  6  to  13 .  
       FIG. 6  is a block diagram showing a composition of a multi-panel organic EL display device according to a first embodiment of the present invention, and  FIG. 7  is a driving waveform diagram of the multi-panel organic EL display device shown in  FIG. 6 .  
      Referring to  FIG. 6 , the multi-panel organic EL display device according to the first embodiment of the present invention includes a plurality of display panels  41 A to  41 I, which commonly have data lines DL 1  to DLm.  
      The multi-panel organic EL display device includes a data driver  40 , which commonly supplies a data pulse to the data lines DL 1  to DLm commonly included in the display panels  41 A to  41 I.  
      The multi-panel organic EL display device further includes: scan driver  42 A to  42 I for independently supplying a scan pulse in correspondence to the display panels  41 A to  41  respectively having scan lines SLA 1  to SLIn; and a timing controller  43  for controlling the data driver  40  and the scan driver  42 A to  42 I.  
      Referring to  FIG. 7 , the data driver  40  of the multi-panel organic EL display device timely divides data into the display panels  41 A to  41 I to supply a data pulse to the data lines DL 1  to DLm of the display panels  41 A to  41 I.  
      The timing controller  43  of the multi-panel organic EL display device supplies a control signal CS 1  to the first scan driver  42 A, which supplies a scan pulse to the entire scan lines SLA 1  to SLAn of the first organic EL display panel  41 A. When the control signal CS 1  is applied to the first scan driver  42 A, the first scan driver  42 A sequentially supplies the scan pulse from the first scan line SLA 1  to nth scan line SLAn of the first organic EL display panel  41 A to select a scan line SLAi (herein, i is any one number of 1 to n) on which data is displayed. During the time when the scan pulse is supplied to the entire scan lines SLA 1  to SLAn of the first organic EL display panel  41 A, the data driver  40  supplies a data pulse to the data lines DL 1  to DLm included in the first organic EL display panel  41 A.  
      Thereafter, the timing controller  43  of the multi-panel organic EL display device sequentially supplies a control signal CS 2  to CS 9  to each of second to ninth scan drivers  42 B to  42 I, which supply a scan pulse to each of scan lines SLB 1  to SLIn of second to ninth organic EL display panels  41 B to  41 I. When the signal CS 2  to CS 9  for controlling the second to ninth scan drivers  42 B to  42 I are sequentially supplied to the second to the ninth scan drivers  42 B to  42 I, the second to the ninth scan drivers  42 B to  42 I sequentially supply the scan pulse to the entire scan lines connected thereto to select a scan line on which data is displayed.  
      During the time when the scan pulse is supplied to the scan lines SLB 1  to SLIn corresponding to each of the second to the ninth organic EL display panels  41 B to  41 I, the data driver  40  of the multi-panel organic EL display device supplies a data pulse to the data lines DL 1  to DLm included in the second to the ninth organic EL display panels  41 B to  41 I.  
       FIG. 8  is a block diagram showing a composition of a multi-panel organic EL display device according to a second embodiment of the present invention.  
      Referring to  FIG. 8 , a plurality of display panels  45 A to  45 I of the multi-panel organic EL display device include: a plurality of display panel group  48 A to  48 C, which commonly have data lines DL 11  to DL 3   m  for each column; and a plurality of data drivers  44 A to  44 C, which commonly supplies a data pulse to the data lines DL 11  to DL 3   m  included in each of the display panel groups  48 A to  48 C.  
      The multi-panel organic EL display device further includes: the display panels  45 A to  45 I having the scan lines SLA 1  to SLIn; a plurality of scan drivers  46 A to  46 I for independently supplying a scan pulse in correspondence to each of the display panels  45 A to  45 I to each of scan lines SLA 1  to SLIn; and a timing controller  47  for controlling the data drivers  44 A to  44 C and the scan drivers  46 A to  46 I.  
      The first data driver  44 A of the multi-panel organic EL display device timely divides data into the display panels  45 A to  45 C of the first display panel group  48 A to supply a data pulse to the data lines DL 11  to DL 1   m  commonly included in the first display panel group  48 A.  
      In other words, the timing controller  47  of the multi-panel organic EL display device supplies a control signal CS 11  to the first scan driver  46 A, which supplies a scan pulse to the entire scan lines SLA 1  to SLAn of the first organic EL display panel  45 A. When the control signal CS 11  is applied to the first scan driver  46 A, the first scan driver  46 A sequentially supplies the scan pulse from the first scan line SLA 1  to nth scan line SLAn of the first organic EL display panel  45 A to select a scan line SLAi (herein, i is any one number of 1 to n) on which data is displayed. During the time when the scan pulse is supplied to the entire scan lines SLA 1  to SLAn of the first organic EL display panel  45 A, the first data driver  44 A supplies a data pulse to the data lines DL 11  to DL 1   m  of the first organic EL display panel  45 A in the first display panel group  48 A.  
      Thereafter, the timing controller  47  of the multi-panel organic EL display device sequentially supplies a control signal CS 12  and CS 13  to each of second and third scan drivers  46 B and  46 C, which supply a scan pulse to each of scan lines SLB 1  to SLCn of second and third organic EL display panels  45 B and  45 C in the first display panel group  48 A. When the signal CS 12  and CS 13  for controlling the second and the third scan drivers  46 B and  46 C are sequentially supplied to the second and the third scan drivers  46 B and  46 C, the second to the third scan drivers  46 B and  46 C sequentially supply the scan pulse to the entire scan lines SLB 1  to SLCn connected thereto to select a scan line on which data is displayed.  
      During the time when the scan pulse is supplied to the scan lines SLB 1  to SLCn corresponding to each of the second and the third organic EL display panels  45 B and  45 C in the first display panel group  48 A, the first data driver  44 A supplies a data pulse to the data lines DL 11  to DL 1   m  of each of the second and the third organic EL display panels  45 B and  45 C in the first display panel group  48 A.  
      In the same method, the timing controller  47  of the multi-panel organic EL display device sequentially supplies a control signal CS 21  and CS 33  to each of fourth to ninth scan drivers  46 D to  46 I, which supply a scan pulse to each of scan lines SLD 1  to SLIn of fourth to ninth organic EL display panels  45 D to  45 I of the second and the third display panel groups  48 B and  48 C. If the signal CS 21  and CS 33  for controlling the fourth to the ninth scan drivers  46 D to  46 I are sequentially supplied to the fourth to the ninth scan drivers  46 D to  46 I, then the second and the third data drivers  44 B and  44 C supply a data pulse to the data lines DL 21  to DL 3   m  corresponding to each of the second and the third organic EL display panel groups  48 B and  48 C during the time when the fourth to the ninth scan drivers  46 D to  46 I apply a scan pulse to the entire scan lines SLD 1  to SLIn.  
      As described above, when each of the display groups commonly has the data line, it is possible to complement a problem of a low brightness cased by the increasing number of panels, which commonly have the data line.  
       FIG. 9  is a block diagram showing a composition of an organic EL display device having a two-way panel according to a third embodiment of the present invention.  
      Referring to  FIG. 9 , the organic EL display device having the two-way panel includes a first organic EL display module  60  and a second organic EL display module  61 .  
      A first organic EL display panel  62  of the first organic EL display module  60  includes first scan lines SL 11  to SL 1   n  crossing data lines DL 1  to DLm.  
      Further, a second organic EL display panel  63  of the second organic EL display module  61  includes second scan lines SL 21  to SL 2   n  crossing the data lines DL 1  to DLm extended from the first organic EL display panel  62 .  
      The first organic EL display module  60  includes a first scan driver  64  for supplying a scan pulse to the first scan lines SL 11  to SL 1   n , and the second organic EL display module  61  includes a second scan driver  65  for supplying a scan pulse to the second scan lines SL 21  to SL 2   n.    
      The organic EL display device having the two-way panel includes: a data driver  66   a  for supplying a data pulse to the data lines DL 1  to DLm of the first and the second display panels  62  and  63 ; and a timing controller  66   b , integrated to the data driver  66   a , for controlling the data driver  66   a  and the first and the second scan drivers  64  and  65 .  
      The data driver  66   a  of the organic EL display device having the two-way panel supplies data to the data lines DL 1  to DLm commonly included in the EL display panel  62  and the second organic EL display panel  63 , in a time-division method.  
      The timing controller  66   b  of the organic EL display device having the two-way panel supplies a control signal CS 1  to the first scan driver  64 , which supplies a scan pulse to the entire scan lines SL 11  to SL 1   n  of the first organic EL display panel  62 , and the data driver  66   a  supplies a data pulse to the data lines DL 1  to DLm commonly included in the first organic EL display panel  62  during the time when a scan pulse is supplied to the entire scan lines SL 11  to SL 1   n  of the first organic display panel  62 .  
      Further, The timing controller  66   b  of the organic EL display device having the two-way panel supplies a control signal CS 2  to the second scan driver  65 , which supplies a scan pulse to the entire scan lines SL 21  to SL 2   n  of the second organic EL display panel  63 , and the data driver  66   a  supplies a data pulse to the data lines DL 1  to DLm commonly included in the second organic EL display panel  63  during the time when a scan pulse is supplied to the entire scan lines SL 21  to SL 2   n  of the second organic display panel  63 .  
       FIG. 10  is a block diagram showing an example in which the organic EL display device having the two-way panel of  FIG. 9  is applied to a folder mobile phone.  
      Referring to  FIG. 10 , in the folder mobile phone according to the present invention, the data lines DL 1  to DLm of the first organic EL display panel  62  are connected to the second organic EL display panel  63  through a cable or a flexible printed circuit FPC, which are not shown. Hereinafter, the first organic EL display panel  62  is assumed as a display device settled to a cover of a folder mobile phone and the second organic EL display panel  63  is assumed as a display device settled in a substance in which a cover of the folder mobile phone is combined to be capable of turning via a hinge.  
      Each of the first scan driver  64  and the second driver  65  of the first and the second organic EL display module  60  and  61  shown in  FIG. 10  is implemented with mounted chips to be separated at both sides of the display panels  62  and  63  in each of the first and the second display panels  62  and  63 . In other words, each of the first scan driver  64  and the second scan driver  65  is divided into first and second odd scan drivers  64   a  and  65   a  and first and second even scan drivers  64   b  and  65   b.    
      When the first odd scan driver  64   a  arranged at a left side of the first organic EL display panel  62  is supplied with a first left side control signal CS 1   a  from the timing controller  66   b , it supplies a scan pulse to an odd-numbered line among the scan lines SL 11  to SL 1   n  of the first organic EL display panel  62 . When the first even scan driver  64   b  arranged at a right side of the first organic EL display panel  62  is supplied with a first right side control signal CS 1   b  from the timing controller  66   b , it supplies a scan pulse to an even-numbered line among the scan lines SL 11  to SL 1   n  of the first organic EL display panel  62 .  
      Further, when the second odd scan driver  65   a  arranged at a left side of the second organic EL display panel  63  is supplied with a second left side control signal CS 2   a  from the timing controller  66   b , it supplies a scan pulse to an odd-numbered line among the scan lines SL 21  to SL 2   n  of the second organic EL display panel  63 . When the first even scan driver  65   b  arranged at a right side of the second organic EL display panel  63  is supplied with a second right side control signal CS 2   b  from the timing controller  66   b , it supplies a scan pulse to an even-numbered line among the scan lines SL 21  to SL 2   n  of the second organic EL display panel  63 .  
      When the first and the second odd scan drivers  54   a  and  55   a , and the first and the second even scan drivers  54   b  and  55   b  are located at the left and the right sides to supply a scan pulse to the scan lines SL 11  to SL 2   n , a length of a wire line can be shorted. Accordingly, it is possible to solve a problem that a waveform is distorted by a voltage drop of the scan lines SL 11  to SL 2   n  or a picture quality is deteriorated.  
      As described above, in a case of implementing the multi-panel organic EL display device commonly having the data line, it is possible to reduce the number of components as compared to a case using each of the data driver and the timing controller. Accordingly, it is possible to lowered power consumption and to reduce bulk of the display device having the multi-panel.  
       FIG. 11  is a block diagram showing a block diagram showing a composition of a multi-panel organic EL display device according to a fourth embodiment of the present invention, and  FIG. 12  is a driving waveform of the multi-panel organic EL display device in  FIG. 11 .  
      Referring to  FIG. 11 , the multi-panel organic EL display device according to the fourth embodiment of the present invention includes a plurality of display panels  141 A to  141 I commonly having scan lines SL 1  to SLn.  
      The multi-panel organic EL display device includes a scan driver  142  for commonly supplying a scan pulse to the scan lines SL 1  to SLn commonly included in the display panels  141 A to  141 I.  
      The multi-panel organic EL display device further includes: data driver  140 A to  140 I for independently supplying data in correspondence to the display panels  141 A to  141 I having data lines DLA 1  to DLIn; and a timing controller  143  for controlling the scan driver  142  and the data driver  140 A to  140 I.  
      Referring to  FIG. 12 , the scan driver  142  of the multi-panel organic EL display device supplies a scan pulse to the scan lines SL 1  to SLn commonly included in the display panels  141 A to  141 I.  
      When a control signal CS is applied to the scan driver  142  from the timing controller  143  of the multi-panel organic EL display device, the scan driver  142  supplies a scan pulse to the entire scan lines SL 1  to SLn of the display panels  141 A to  141 I.  
      When the control signal CS is applied to the scan driver  142 , as shown in  FIG. 12 , the scan driver  142  sequentially supplies the scan pulse from the first scan line SL 1  to nth scan line SLn in a case of a first row display panel  141 A to  141 C among the plurality of display panels  141 A to  141 I to select a scan line SLi (herein, i is any one number of 1 to n) on which data is displayed. On the other hand, the scan driver  142  sequentially supplies the scan pulse from the nth scan line SLn to the first scan line SL 1  in a case of a second row display panel  141 D to  141 F among the plurality of display panels  141 A to  141 I to select a scan line on which data is displayed.  
      During the time when the scan pulse is supplied to the entire scan lines SL 1  to SLn of the plurality of display panels  141 A to  141 I, the timing controller  143  supplies a control signal CD to the plurality of data drivers  140 A to  140 I. And, the plurality of data drivers  140 A to  140 I supply a data pulse to the data lines DLA 1  to DLIm of the plurality of display panels  141 A to  141 I corresponding thereto.  
       FIG. 13  is a block diagram showing a composition of a multi-panel organic EL display device according to a fifth embodiment of the present invention.  
      Referring to  FIG. 13 , a plurality of display panels  145 A to  145 F of the multi-panel organic EL display device include: a plurality of display panel groups  148 A and  148 B, which have scan lines SL 11  to SL 2   n  commonly for each column; scan drivers  146 A and  146 B of the display panel groups  148 A and  148 B, which commonly supplies a scan pulse to the scan lines SL 11  to SL 2   n  commonly included in each of the display panel groups  148 A and  148 B.  
      The multi-panel organic EL display device further includes: the plurality of display panels  145 A to  145 F having data lines DLA 1  to DLFn; data drivers  144 A to  144 F for independently supplying a data pulse in correspondence to each of the display panels  145 A to  145 F to each of data lines DLA 1  to DLFn; and a timing controller  147  for controlling the scan drivers  146 A and  146 B and the plurality of data drivers  144 A to  144 F.  
      The first scan driver  146 A of the multi-panel organic EL display device supplies a scan pulse to the plurality of display panels  145 A to  145 C of the first display panel group  148 A.  
      When a control signal CS 1  is applied to the first scan driver  146 A from the timing controller  147  of the multi-panel organic EL display device, the first scan driver  146 A supplies the scan pulse to the scan lines SL 11  to SL 1   n  commonly included in the plurality of display panels  145 A to  145 C of the first display panel group  148 A.  
      When the control signal CS 1  is applied to the first scan driver  146 A, the first scan driver  146 A sequentially supplies the scan pulse from the first scan line SL 11  to nth scan line SL 1   n  in the first organic EL display panel  145 A to select a scan line SL 1   i  (herein, i is any one number of 1 to n) on which data is displayed. On the other hand, when the control signal CS 1  is applied to the first scan driver  146 A, the first scan driver  146 A sequentially supplies the scan pulse from the nth scan line SL 1   n  to the first scan line SL 11  in the second organic EL display panel  145 B to select a scan line on which data is displayed.  
      During the time when the scan pulse is supplied to the entire scan lines SL 11  to SL 1   n  of the first organic EL display panel group  148 A, the timing controller  147  supplies a control signal CD 1  to the plurality of data drivers  144 A to  144 C of the first display panel group  148 A. When the control signal CD 1  is supplied to the plurality of data drivers  144 A to  144 C of the first display panel group  148 A, the plurality of data drivers  144 A to  144 C supply a data pulse to the entire data lines DLA 1  to DLCm of the display panels  145 A to  145 C of the first display panel group  148 A corresponding thereto.  
      In the same method, when a control signal CS 2  is applied to the second scan driver  146 B from the timing controller  147  of the multi-panel organic EL display device, the second scan driver  146 B supplies the scan pulse to the scan lines SL 21  to SL 2   n  commonly included in the plurality of display panels  145 D to  145 F of the second display panel group  148 B.  
      When the control signal CS 2  is applied to the second scan driver  146 B, the second scan driver  146 B sequentially supplies the scan pulse from the first scan line SL 21  to nth scan line SL 2   n  in the fourth organic EL display panel  145 D to select a scan line SL 2   i  (herein, i is any one number of 1 to n) on which data is displayed. On the other hand, when the control signal CS 2  is applied to the second scan driver  146 B, the second scan driver  146 B sequentially supplies the scan pulse from the nth scan line SL 2   n  to the first scan line SL 21  in the fifth organic EL display panel  145 E to select a scan line on which data is displayed.  
      Accordingly, it is possible to complement a problem that the scan pulse waveform is distorted by a voltage drop caused due to the increasing number of panels, which commonly have the scan line in a case that each of display panel groups commonly has each scan line.  
      Further, in a case of implementing the multi-panel organic EL display device commonly having the scan line, it is possible to reduce the number of components as compared to a case using each of the scan driver and the timing controller. Accordingly, it is possible to lowered power consumption and to reduce bulk of the display device having the multi-panel.  
      As described above, the multi-panel display device and the method of driving the same according to the present invention commonly have the data line to simplify a driving circuit. Accordingly, it is possible to lowered power consumption, as well as, to enable a miniaturization of the entire components.  
      In addition, the multi-panel display device and the method of driving the same according to the present invention commonly have the scan line to simplify a driving circuit. Accordingly, it is possible to lowered power consumption, as well as, to enable a miniaturization of the entire components.  
      Although the present invention has been explained by the embodiments shown in the drawings described above, it should be understood to the ordinary skilled person in the art that the invention is not limited to the embodiments, but rather that various changes or modifications thereof are possible without departing from the spirit of the invention. Accordingly, the scope of the invention shall be determined only by the appended claims and their equivalents.