Abstract:
Disclosed are a driving module for a liquid crystal display panel and a liquid crystal display device capable of inspecting the effectiveness of a driving signal applied to a display cell circuit of the liquid crystal panel and a wiring state of driving signal input/output lines. The display cell circuit provided in the liquid crystal display panel is connected to a gate line and a data line. The liquid crystal display panel displays an image in response to gate and data driving signals inputted through the gate and data lines. An integrated printed circuit board generates gate and data driving signals. A data driving module is electrically connected between the integrated printed circuit board and the data line to control the time for applying the data driving signal. A gate driving module has a plurality of gate driving signal input/output lines connected to the gate line. The gate driving module provides the gate driving signal to the gate line by controlling the time for applying the gate driving signal and inspects the states of the gate driving signal and the gate driving signal input/output lines. The wiring state of the gate driving signal input/output lines, which are formed in the integrated printed circuit board by passing through the gate driving module, and the effectiveness of the driving signal supplied to the gate line through the gate driving signal input/output lines can be easily inspected.

Description:
CROSS REFERENCE TO PRIOR APPLICATIONS 
   This application claims priority from Korean Patent Application No. 2000-13544 filed Mar. 17, 2000, which is hereby incorporated by reference for all purposes as if fully set forth herein. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a liquid crystal display device, and more particularly to a driving module for a liquid crystal display panel and a liquid crystal display device having the same capable of inspecting the effectiveness of a driving signal applied to a display cell circuit of the liquid crystal panel and a wiring state of driving signal input/output lines. 
   2. Description of the Related Art 
   Recently, as information technology is developed, information processing devices, such as computers, make great strides. The advance of the information processing technology leads to the development of the monitor device which displays information outputted from the information processing device. 
   The monitor device is generally classified into a CRT (cathode ray tube) type monitor device which uses the features of the CRT, and a liquid crystal unit type monitor device which adopts physical and optical features of liquid crystal. The liquid crystal unit type monitor device has a compact size and a light weight with a low power consumption as compared with the CRT type monitor device. As a result, the liquid crystal unit type monitor device is widely used as a display device of a portable computer, as a monitor of a desk top computer and as a monitor of a high definition visual instrument. 
     FIG. 1  shows an exploded perspective view of a conventional liquid crystal display device  100 . 
   Referring to  FIG. 1 , the liquid crystal display device  100  has a liquid crystal display module  130  which displays an image by receiving an image signal, a front case  110  and a rear case  120  that are coupled to each other so as to receive the liquid crystal display module  130 . The liquid crystal display module  130  includes a display unit  170  and a back light assembly  150  for providing a light to the display unit  170 . 
   The display unit  170  has a liquid crystal display panel  171  for displaying the image, a data side printed circuit board  176 , a gate side printed circuit board  175 , a data side tape carrier package  178  and a gate side tape carrier package  174 . 
   The liquid crystal display panel  171  has a thin film transistor substrate  172 , a color filter board  173  and a liquid crystal (not shown). 
   The thin film transistor substrate  172  is a transparent glass substrate on which thin film transistors arranged in a matrix are formed. Data lines are connected to a source terminal of the thin film transistor, and gate lines are connected to a gate terminal of the thin film transistor. In addition, pixel electrodes consisting of indium tin oxide (ITO), which is transparent conductive material, is formed on a drain terminal of the thin film transistor. 
   The color filter board  173  is positioned opposite to the thin film transistor substrate  172 . R.G.B pixels are formed on the color filter board  173  by a thin film manufacturing process. When the light passes through the R.G.B pixels of the color filter board  173 , predetermined colors are generated. A common electrode of ITO is coated on a front portion of the color filter board  173 . 
   When the electric power is applied to gate and source terminals of the transistor of the thin film transistor substrate, the thin film transistors are turned-on so that an electric field is formed between the pixel electrode and the common electrode of the color filter board. Alignment angles of molecules of the liquid crystal injected between the thin film transistor substrate  172  and the color filter board  173  are changed by the electric field, so the light transmission rate according to the alignment angles of molecules of the liquid crystal so that desired pixels are obtained. 
   In order to control the alignment angles and alignment time of molecules of the liquid crystal, a driving signal and a timing signal are applied to the gate line and the data line of the thin film transistor, respectively. As shown in  FIG. 1 , the data side tape carrier package  178 , which is a flexible printed circuit board, is attached to the source side of the liquid crystal display panel  171  for applying the data driving signal. In addition, the gate side tape carrier package  174 , which is a flexible printed circuit board, is attached to the gate side of the liquid crystal display panel  171  for applying the gate driving signal. 
   The data side printed circuit board  176  and the gate side printed circuit board  175 , which apply driving signals to the data line and the gate line by receiving the image signal from outside, are connected to the data side tape carrier package  178  and the gate side tape carrier package  174 , respectively. A source part receives the image signal from an information processing device (not shown), such as a computer, and applies the data driving signal to the liquid crystal display device  171 . The source part is formed on the data side printed circuit board  176 . A gate part is formed on the gate side printed circuit board  175  so as to apply the gate driving signal to the gate line of the liquid crystal display panel  171 . That is, the data side printed circuit board  176  and the gate side printed circuit board  175  generates the gate driving signal, the data driving signal and a plurality of timing signals for determining the time for applying the gate and data driving signals, so that the gate driving signal is applied to the gate line through the gate side tape carrier package  174  and the data driving signal is applied to the data line through the data side tape carrier package  178 . 
   The back light assembly  150  is provided below the display unit  170  so as to uniformly apply the light to the display unit  170 . The back light assembly  150  has a lamp unit  151  which is positioned at an end portion of the liquid crystal display module  130  so as to generate the light, a light guide plate  152  for guiding the light towards the display unit  170 , a plurality of optical sheets  153  for making the luminance of the light irradiated from the light guide plate  152  to be uniform, and a reflection plate  154  which is positioned below the light guide plate  152  so as to reflect the light leaking from the light guide plate  152 , thereby improving the light efficiency. 
   The display unit  170  and the back light assembly  150  is fixedly supported by a mold frame  131 , which is a container for receiving the display unit  170  and the back light assembly  150 . A chassis  140  is provided to secure the position of the display unit  170 . 
   As thin film manufacturing technology develops, controllers placed in the gate side printed circuit board  175  for processing the gate signal can be placed in the data side printed circuit board  176  without enlarging the area of the data side printed circuit board  176 . That is, signal transmission lines for transmitting the gate driving signal or other signals are only formed in the data side printed circuit board  176  so as to transmit the gate driving signal inputted from the data side printed circuit board  176  to the gate line through the gate side tape carrier package  174 . 
   However, in the above-mentioned conventional liquid crystal display device, it is impossible to inspect the wiring state of the signal transmission lines for the gate and the effectiveness of the gate driving signal. Particularly, since the gate side printed circuit board  175  is integrated with the data side printed circuit board  176 , only are the signal transmission lines for the gate driving signal complicatedly formed in the gate side tape carrier package  175  so that the wiring state of the signal transmission lines and the effectiveness of the driving signal cannot be properly inspected. 
   SUMMARY OF THE INVENTION 
   Therefore, it is a first object of the present invention to provide a driving module capable of inspecting the effectiveness of a driving signal applied to a display cell circuit of a liquid crystal panel and inspecting the wiring state of driving signal input/output lines. 
   A second object of the present invention is to provide a liquid crystal display device having the driving module. 
   To achieve the first object of the present invention, there is provided a driving module for applying a driving signal to a display cell circuit formed on a transparent substrate through a plurality of signal transmission lines, the driving module comprising a flexible board; a driving circuit mounted on the flexible board; 
   a plurality of driving signal input/output lines that are electrically communicated with the driving circuit and the display cell circuit so as to input/output the driving signal; and an inspecting part formed on the plurality of driving signal input/output lines for inspecting states of the plurality of driving signal input/output lines and the driving signal. 
   To achieve the second object of the present invention, there is provided a liquid crystal display device comprising: a liquid crystal display panel having a plurality of first and second signal transmission lines and display cell circuits which are connected to pairs of first and second signal transmission lines, the liquid crystal display panel displaying an image in response to first and second driving signals inputted through the first and second signal transmission lines; an integrated printed circuit board for generating the first and second driving signals; a plurality of first driving modules that are electrically connected between the integrated printed circuit board and the plurality of first signal transmission lines so as to transmit the first driving signal to the first signal transmission lines by controlling a time for applying the first driving signal of the integrated printed circuit board; and a plurality of second driving modules having a plurality of driving signal input/output lines connected to the plurality of second signal transmission lines. The second driving modules transmit the second driving signal to the second signal transmission lines by controlling the time for applying the second driving signal of the integrated printed circuit board. The second driving modules inspect states of the second driving signal and the plurality of driving signal input/output lines. 
   According to the preferred embodiment of the present invention, the plurality of driving signal input/output lines are formed at a side of the transparent substrate, that is at a side of the liquid crystal display panel. The plurality of driving signal input/output lines includes a plurality of gate driving signal input lines that are formed on the flexible board for providing the gate driving signal to the gate driving circuit, a plurality of gate driving signal bypass lines formed on the flexible board for providing the gate driving signal supplied from the gate driving circuit to a next circuit and a gate driving signal output line connected between the gate driving circuit and a gate line so as to provide the gate driving signal supplied from the plurality of gate driving signal input lines to the signal transmission lines. 
   Each of the plurality of gate driving signal input lines is correspondingly connected to each of the plurality of gate driving signal bypass lines in the gate driving circuit. The inspecting part is formed at only one group of the plurality of gate driving signal input lines and the plurality of gate driving signal bypass lines or is separately formed at the plurality of gate driving signal input lines and the plurality of gate driving signal bypass lines. 
   When the inspecting part is separately formed, the inspecting part is formed at only one of the gate driving signal input line and the gate driving signal bypass line in a line in which a gate driving signal input line is electrically communicated with a gate driving signal bypass line. The inspecting part is formed by point-shaped patterns having an area larger than an area of each gate driving signal input line and gate driving signal bypass line. 
   According to the driving module for the liquid crystal display panel and the liquid crystal display device, the gate driving signal generated from the integrated printed circuit board is supplied to the gate line through the gate driving signal transmission line that are formed on the thin film transistor substrate by passing through a gate driving IC of the gate driving module. In addition, an inspecting part having a point-shaped pattern is formed on each signal transmission line of the gate driving signal transmission line. 
   Accordingly, the wiring state of the gate driving signal input/output lines, which are formed in the integrated printed circuit board by passing through the gate driving module, and the effectiveness of the driving signal supplied to the gate line through the gate driving signal input/output lines can be easily inspected. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above objects and other advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which: 
       FIG. 1  is an exploded perspective view of a conventional liquid crystal display device; 
       FIG. 2  is an exploded perspective view of a liquid crystal display device according to a preferred embodiment of the present invention; 
       FIG. 3  is a schematic view for explaining the driving state of a liquid crystal display panel assembly of the liquid crystal display device shown in FIG.  2 ; 
       FIG. 4  is a schematic view showing the liquid crystal display panel in which a color filter board is removed; 
       FIG. 5  is a schematic view showing a driving module of the liquid crystal display panel shown in  FIG. 4  formed with inspecting patterns according to one embodiment of the present invention; and 
       FIG. 6  is a schematic view showing a driving module of the liquid crystal display panel shown in  FIG. 4  formed with inspecting patterns according to another embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. 
     FIG. 2  is an exploded view showing a liquid crystal display device according to the preferred embodiment of the present invention. 
   Referring to  FIG. 2 , the liquid crystal display device  900  has a liquid crystal display module  500  that receives an image signal for displaying an image and a case  800  for containing the liquid crystal display module  500 . The case  800  consists of a front case  810  and a rear case  820 . 
   The liquid crystal display module  500  has a display unit having a liquid crystal display panel for displaying an image. 
   The display unit has the liquid crystal display panel  200 , an integrated printed circuit board  400 , a data side tape carrier package  300  and a gate side flexible circuit board  250  manufactured by using COF method. 
   The liquid crystal display panel  200  has a thin film transistor substrate  201 , a color filter board  202  and a liquid crystal (not shown). 
   The thin film transistor substrate  201  is a transparent glass substrate in which transistors are formed in a matrix shape. Data lines are connected to a source terminal of the thin film transistors and gate lines are connected to a gate terminal of the thin film transistors. In addition, pixel electrodes consisting of indium tin oxide (ITO), which are made of transparent conductive material, are formed on a drain terminal of the thin film transistors. 
   When an electric signal is applied to the data lines and the gate lines, the electrical signal is also applied to the source and gate terminals of the thin film transistors. Accordingly, the thin film transistors are turned on or turned off, so that an electrical signal required to form the pixel is outputted through the drain terminal. 
   The color filter board  202  is positioned opposite to the thin film transistor substrate  201 . R.G.B pixels are formed on the color filter board  202  by a thin film manufacturing process. When the light passes through the R.G.B pixels of the color filter board  202 , predetermined colors are generated. A common electrode consisting of ITO is coated on a front portion of the color filter board  202 . 
   When the electric power is applied to gate and source terminals of the thin film transistors of the thin film transistor substrate  201 , the thin film transistors are turned-on so that an electric field is formed between the pixel electrode and the common electrode of the color filter board  202 . Alignment angles of molecules of the liquid crystal filled between the thin film transistor substrate  201  and the color filter board  202  changes by the electric field, which changes the light transmission rate so that desired pixel images are obtained. 
   In order to control the alignment angles and alignment time of molecules of the liquid crystal, a driving signal and a timing signal are applied to the gate line and the data line of the thin film transistors, respectively. As shown in  FIG. 2 , the data side tape carrier package  300 , which is a flexible printed circuit board and is referred to a data driving module below, is attached to the source side of the liquid crystal display panel  200  for determining the time for applying the data driving signal. In addition, the gate side flexible printed circuit board  250 , which is manufactured by COF method and is referred to a gate driving module below, is attached to the gate side of the liquid crystal display panel  200  for determining the time for applying the gate driving signal. 
   The integrated printed circuit board  400  is connected to the data driving module  300  at a data line side of the liquid crystal display panel  200 . The integrated printed circuit board  400  receives the image signal from the outside of the liquid crystal display panel  200  and applies the driving signal into the gate line and the data line. The integrated printed circuit board  400  includes a source part that receives the image signal from an information processing device (not shown), such as a computer, and applies the data driving signal to the liquid crystal display device  200  and a gate part for applying the gate driving signal to the gate line of the liquid crystal display panel  200 . 
   That is, the integrated printed circuit board  400  generates the gate driving signal, the data driving signal and a plurality of timing signals for determining the time for applying the gate and data driving signals, so that the gate driving signal is applied to the gate line of the liquid crystal display panel  200  through the gate driving module  250  and the data driving signal is applied to the data line of the liquid crystal display panel  200  through the data driving module  300 . 
   The back light assembly  600  is provided below the display unit so as to uniformly apply the light to the display unit. The back light assembly  600  has a lamp unit  630  positioned at an end portion of the liquid crystal display module  500  to provide light. The lamp  630  is protected by a lamp cover  640 . A light guide plate  620  has a size corresponding to a size of the liquid crystal panel  200  and guides the light generated from the lamp  630  towards the display unit. 
   A plurality of optical sheets  610  are provided above the light guide plate  620  for making the uniform luminance of the light irradiated from the light guide plate  620 . A reflection plate  650  is positioned below the light guide plate  620  so as to reflect the light leaking from the light guide plate  620 , thereby improving the light efficiency. 
   The display unit and the back light assembly  600  are fixedly supported by a mold frame  510 , which is a container for receiving the display unit and the back light assembly  510 . A chassis  700  is provided to secure the display unit in its position. 
     FIG. 3  shows the liquid crystal display panel assembly of the liquid crystal display device having the structure as mentioned above.  FIG. 3  is a schematic view for explaining the driving state of the liquid crystal display panel assembly of the liquid crystal display device shown in  FIG. 2 . 
   Referring to  FIG. 3 , the data driving module  300  is electrically connected to one end of the thin film transistor substrate  201 . The gate driving module  250  is electrically connected to the other end of the thin film transistor substrate  201 . The other end of the data driving module  300  is connected to the integrated printed circuit board  400  which generates the gate driving signal for driving the gate driving module  250 , the data driving signal for driving the data driving module  300  and the plurality of timing signals for determining the time for applying the gate and data driving signals. 
   Pluralities of data lines are formed on the thin film transistor substrate  201  in the form of a column  2 , and the data driving signal is applied to the data lines through the data driving module  300 . In addition, pluralities of gate lines are formed on the thin film transistor substrate  201  in the form of a row  1 , and the gate driving signal is applied to the gate lines through the gate driving module  250 . A thin film transistor  5  is formed on the thin film transistor substrate  201  in a matrix form. A source terminal S and a gate terminal G of the thin film transistor  5  are connected to the data line  2  and the gate line  1 , respectively. A drain terminal of the thin film transistor  5  is grounded by interposing the pixel electrode. 
   After the predetermined electric power is applied to the data lines  2 , the electric power is sufficiently applied to one of gate lines  1  so as to turn on the thin film transistor  5 . Then, the thin film transistor  5  connected to the gate line  1  is turned on so that the electric power is supplied to the pixel electrode. At this time, the electric field is formed between the pixel electrode of the thin film transistor substrate  201  and the common electrode of the color filter board  202 . Accordingly, molecules of the liquid crystal are rearranged proportional to the intensity of the electric filed. The molecules of the liquid crystal keep the state due to the storage capacitance between the pixel electrode and the common electrode. By using the optical features of the liquid crystal, the amount of the electric power applied to the data line  2  and the timing for applying the electric power to the gate line  1  are properly adjusted so that required image can be displayed through the liquid crystal display device  900 . 
   Since a gate controller and a data controller are placed in the integrated printed circuit board  400 , a first output terminal for the gate driving signal and a second output terminal for the data driving signal are installed together. 
     FIG. 4  shows the structures of the first and second output terminals formed in the data driving module  300 . 
   Referring to  FIG. 4 , the data driving module  300  has a flexible base substrate  310 , a driving integrated circuit  320  which is referred to as a driving IC below, a data driving signal input line  330  which transmits the data driving signal from the integrated printed circuit board  400  to the driving IC  320 , a data driving signal output line  340  for supplying the data driving signal to the data lines  2 , and a gate driving signal transmission line  4  which supplies the gate driving signal from the integrated printed circuit board  400  to the gate driving module  250 . 
   The number of the gate driving module  250  is corresponding to the number of the gate lines I formed on the thin film transistor substrate  201 . In this embodiment, first to third gate driving modules  250   a,    250   b  and  250   c  are installed. 
   Referring to  FIG. 5  the gate driving signal transmission line  4 , a part of which is installed at the data driving module  300 , is arranged on the integrated printed circuit board  400  and extends passing through the data driving module  300 , the thin film transistor substrate  201 , and the first to third gate driving module  250   a,    250   b  and  250   c.  First to third gate driving ICs  252   a,    252   b  and  252   c  are formed on the first to third gate driving module  250   a,    250   b  and  250   c,  respectively. 
   For the purpose of explaining, portions of the gate driving signal transmission line  4  formed on the thin film transistor substrate  201  are referred to first to third gate driving signal transmission lines  6   a,    6   b  and  6   c.  In addition, portions of the gate driving signal transmission lines  4 , which are connected to allow the gate driving signal to be supplied from the thin film transistor substrate  201  to the first to third gate driving ICs  252   a,    252   b  and  252   c,  are referred to first to third gate driving signal input lines  253 ,  255  and  257 . Portions of the gate driving signal transmission lines  4 , which are connected between the first to third gate driving ICs  252   a,    252   b  and  252   c  and first to third gate driving signal transmission lines  6   a,    6   b  and  6   c  in order to supply the gate driving signal to next gate driving module, are referred to first to third gate driving signal bypass lines  254 ,  256  and  258 . In addition, portions of the gate driving signal transmission lines  4 , which are connected to allow the gate driving signal to be transferred from the first to third gate driving ICs  252   a,    252   b  and  252   c  to the gate line of the thin film transistor substrate  201 , are referred to first to third gate driving signal output lines  255   a,    255   b  and  255   c.    
     FIG. 5  shows the driving module of the liquid crystal display panel shown in  FIG. 4  formed with inspecting patterns according to one embodiment of the present invention. 
   Referring to  FIG. 5 , when the image signal is received from the information processing device, the integrated printed circuit board  400  generates the gate driving signal and the data signal so as to display the image corresponding to the image signal. 
   As mentioned above, the data driving signal generated from the integrated printed circuit board  400  is transferred to the data lines  2 , respectively, through the data driving signal input line  330 , the data driving IC  320  and the data driving signal output line  340  of the data driving module  300 . 
   The gate driving signal generated from the integrated printed circuit board  400  is transferred to the first gate driving signal input line  253  of the first gate driving module  250   a  through the first gate driving signal transmission line  6   a  formed on the thin film transistor substrate  201 . Then, the gate driving signal is supplied to the second gate driving signal transmission line  6   b  formed in the thin film transistor substrate  201  by way of the first gate driving IC  252   a  and the first gate driving signal bypass line  254 . In the same manner, the gate driving signal is transferred to the second and third gate driving modules  250   b  and  250   c.  At this time, a plurality of the first gate driving signal input lines  253  are provided. Each of the gate driving signal input line  253  is connected to each first gate driving signal bypass lines  254  in the first gate driving IC  252   a.    
   As mentioned above, the gate driving signal generated from the integrated printed circuit board  400  is transferred to the first to third gate driving module  250   a,    250   b  and  250   c  through the gate driving signal transmission line  4 . Then, the gate driving signal is transferred to the gate line  1  through the first to third gate driving signal output lines  255   a,    255   b  and  255   c  formed between the first to third gate driving ICs  252   a,    252   b  and  252   c  and the gate line  1  of the thin film transistor substrate  201 . 
   The wiring patterns of first to third gate driving signal transmission lines  6   a,    6   b  and  6   c  formed on the thin film transistor substrate  201  are integrally formed with the thin film transistor substrate  201  by using the thin film manufacturing process. Accordingly, since the wiring patterns have high contact resistance and intrinsic resistance, the gate driving signal can be modulated. In order to prevent the modulation of the gate driving signal, it is required to enlarge the sectional area of the wiring patterns. However, if the sectional area of the wiring patterns is enlarged, the effective display area of the thin film transistor substrate  201  is reduced. For this reason, intervals between the wiring patterns are closely formed. Accordingly, inspecting patterns are required to check the short-circuit of the closed wiring patterns and the transmitting state of the gate driving signal.  FIG. 5  shows the inspecting patterns according to one embodiment of the present invention. 
   As shown in  FIG. 5 , first to sixth inspecting patterns  258   a,    258   b,    258   c,    258   d,    258   e  and  258   f  in the form of point-shaped patterns are formed at parts of the first to third gate driving signal input lines  253 ,  255  and  257  and the first to third gate driving signal bypass lines  254 ,  256  and  258 . The first to sixth inspecting patterns  258   a,    258   b,    258   c,    258   d,    258   e  and  258   f  have the area larger than the area of the wiring patterns. 
   As described above, the first to third gate driving signal input lines  253 ,  255  and  257  are correspondingly connected to the first to third gate driving signal bypass lines  254 ,  256  and  258  in the first to third gate driving ICs  252   a,    252   b  and  252   c,  respectively. Accordingly, the first and second inspecting patterns  258   a,    258   b,  the third and the fourth inspecting patterns  258   c  and  258   d,  and the fifth and sixth inspecting patterns  258   e  and  258   f  are formed on the wiring patterns that are not overlapped with each other. 
   In other words, as shown in  FIG. 5 , the first, third and fifth inspecting patterns  258   a,    258   c  and  258   e  are formed at an outer portion of the first to third gate driving signal input lines  253 ,  255  and  257  and the second, fourth and sixth inspecting patterns  258   b,    258   d  and  258   f  are formed at an inner portion of the first to third gate driving signal bypass lines  254 ,  256  and  258 . The position of the first, third and fifth inspecting patterns  258   a,    258   c  and  258   e  and the second, fourth and sixth inspecting patterns  258   b,    258   d  and  258   f  can be reversed. 
   In addition, it is possible to form the first to sixth inspecting patterns  258   a,    258   b,    258   c,    258   d,    258   e  and  258   f  only on the first to third gate driving signal input lines  253 ,  255  and  257 .  FIG. 6  is a schematic view showing the gate driving module of the liquid crystal display panel shown in  FIG. 4  formed with inspecting patterns according to another embodiment of the present invention. 
   Referring to  FIG. 6 , the first and second inspecting patterns  258   a  and  258   b,  the third and fourth inspecting patterns  258   c  and  258   d,  and the fifth and sixth inspecting patterns  258   e  and  258   f  are formed on the first to third gate driving signal input lines  253 ,  255  and  257 , respectively. At this time, the inspecting patterns are not formed on the first to third gate driving signal bypass lines  254 ,  256  and  258 , since it is possible to inspect the effectiveness of the gate driving signal and the state of the wiring patterns formed on the first to third gate driving module  250   a,    250   b  and  250   c  by using the first to sixth inspecting patterns  258   a,    258   b,    258   c,    258   d,    258   e  and  258   f  formed on the wiring patterns of the first to third gate driving signal input lines  253 ,  255  and  257 . 
   That is, by checking the first and second inspecting patterns  258   a  and  258   b  by using an inspecting probe, the wiring state of the gate driving signal transmission line  4  from the integrated printed circuit board  400  to the first gate driving signal input line  253  and the effectiveness of the gate driving signal can be checked. In the same manner, by checking the third to sixth inspecting patterns, the wiring state of the remaining portion of the gate driving signal transmission line  4  and the effectiveness of the gate driving signal thereof can be checked. 
   According to the driving module for the liquid crystal display panel and the liquid crystal display device as described above, the gate driving signal applied to the gate line formed on the thin film transistor substrate is generated from the integrated printed circuit board. The gate driving signal is transmitted to the gate line through the gate driving signal transmission line. The gate driving signal transmission line consists of a plurality of signal transmission lines and is formed on the thin film transistor substrate by passing through the gate driving IC of the gate driving module which is connected to one end of the thin film transistor substrate. In addition, inspecting patterns in the form of point-shaped patterns having the area lager than the area of the signal transmission line are formed on each signal transmission line. 
   Accordingly, the wiring state of the gate driving signal transmission lines, which are formed in the integrated printed circuit board by passing through the gate driving modules, and the effectiveness of the driving signal supplied to the gate line through the gate driving signal transmission lines can be easily inspected. 
   While the present invention has been described in detail with reference to the preferred embodiment thereof, it should be understood to those skilled in the art that various changes, substitutions and alterations can be made hereto without departing from the scope of the invention as defined by the appended claims.