Abstract:
A flat display panel and a related repairing method are provided. The flat display panel includes multiple horizontal repair lines parallel to scan lines and multiple vertical repair lines parallel to data lines. The vertical repair lines are disposed on one side of the data lines one to one, and the horizontal repair lines are disposed on one side of the scan lines one to one. When one of the data lines or one of the scan lines is broken, an electrical route formed by a use of the vertical repair lines or the horizontal repair lines detours the broken scan line or data line, so as to deliver signal to pixel electrode normally.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is the National Stage of International Application No. PCT/CN2011/076612 filed Jun. 30, 2011, which claims the benefit of Chinese Application No. 201110134025.7, filed May 23, 2011, the disclosures of which are incorporated herein by reference in their entireties. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a flat display panel and a repair method thereof, and more particularly, to a flat display panel with a structure having repair lines and a method of repairing broken lines thereof 
     2. Description of the Prior Art 
     An advanced monitor with multiple functions is an important feature for use in current consumer electronic products. Liquid crystal displays (LCDs) which are colorful monitors with high resolution are widely used in various electronic products such as monitors for mobile phones, personal digital assistants (PDAs), digital cameras, laptop computers, and notebook computers. 
     A thin-film transistor liquid crystal display (TFT-LCD) panel has gradually become a mainstream product in the consumer electronics market because it has many advantages, such as high quality, efficient utilization of space, low consumption power, and no radiation. Refer to  FIG. 1 , which is a partial schematic diagram of a conventional LCD panel. The conventional LCD panel comprises a plurality of pixel electrodes  100 , a plurality of data lines  102 , and a plurality of scan lines  101 . Each of the plurality of pixel electrodes  100  is connected to a scan line  101  and to a data line  102  through a TFT  103 . The TFT  103  is brought into conduction or cutoff in response to a scan signal transmitted through the scan line  101 . When the scan signal transmitted through the scan line  101  is at a high level, the TFT  103  conducts, so that data voltage applied on the data line  102  can be output to each of the plurality of pixel electrodes  100 . Liquid crystal (LC) molecules between each of the plurality of pixel electrodes  100  and a common line  105  rotate to display different gray levels based on a voltage difference between the data voltage received by each of the plurality of pixel electrodes  100  and voltage provided by the common line  105 . 
     However, a breaking G sometimes occurs in the data line  102  or in the scan line  101  during the LCD panel manufacturing process. Generally speaking, chemical vapor deposition (CVD) repair is performed to repair a broken line found in the data line  102  or in the scan line  101  before cell processes are conducted. Otherwise, the LCD panel is scrapped nowadays if any of the data line  102  or the scan line  101  remains to be broken after cell processes are conducted, which causes unnecessary waste, affects the product yield, and increases the manufacturing cost of the LCD panel. 
     SUMMARY OF THE INVENTION 
     Therefore, an object of the present invention is to provide a flat display panel with a structure having repair lines and the method of repairing the broken lines thereof. After cell processes, laser is applied to cut and connect specific repair lines to bypass the breakings of the broken data line or scan line, so that signals which are unable to he transmitted through the broken data line or the broken scan line can be transmitted through the repair line. The flat display panel with a structure having repair lines and the method of repairing broken lines thereof can reduce scrapped products, thereby solving the problem occurring in the prior art. 
     According to the present invention, a flat display panel comprises a plurality of matrix-arranged pixel electrodes, a plurality of scan lines parallel to one another and extended along a first direction, a plurality of data lines parallel to one another and extended along a second direction, the second direction being perpendicular to the first direction, a plurality of switching transistors coupled to the plurality of pixel electrodes, to the plurality of scan lines, and to the plurality of data lines one to one, a plurality of horizontal repair lines, parallel to the plurality of scan lines, and a plurality of vertical repair lines, parallel to the plurality of data lines. Each of the plurality of switching transistors is used for receiving the scan signal transmitted through each of the plurality of scan lines coupled to each of the plurality of switching transistors and for conducting the data signal transmitted through each of the plurality of data lines coupled to each of the plurality of switching transistors to the corresponding pixel electrode. The plurality of horizontal repair lines are disposed on one side of the plurality of scan lines one to one. The plurality of vertical repair lines are disposed on one side of the plurality of data lines one to one. A first horizontal repair line is selected from the plurality of horizontal repair lines while a first vertical repair line and a second vertical repair line are selected from the plurality of vertical repair lines, when one of the plurality of scan lines is detected to be a broken scan line, causing a pixel electrode unable to receive the scan signal. The first and second vertical repair lines are disposed on both sides of the pixel electrode, respectively. A first cutting zone and a second cutting zone are formed on the first horizontal repair line. A third cutting zone and a fourth cutting zone are formed on the first vertical repair line. A fifth cutting zone and a sixth cutting zone are formed on the second vertical repair line. The first and second vertical repair lines are located between the first and second cutting zones. The first horizontal repair line and the broken scan line are located between the third and fourth cutting zones as well as between the fifth and sixth cutting zones. The first and second vertical repair lines, respectively, are electrically connected to the broken scan line and the first horizontal repair line at their overlapping areas. 
     According to the present invention, a flat display panel comprises a plurality of matrix-arranged pixel electrodes, a plurality of scan lines parallel to one another and extended along a first direction, a plurality of data lines parallel to one another and extended along a second direction, the second direction being perpendicular to the first direction, a plurality of switching transistors coupled to the plurality of pixel electrodes, to the plurality of scan lines, and to the plurality of data lines one to one, a plurality of horizontal repair lines, parallel to the plurality of scan lines, and a plurality of vertical repair lines, parallel to the plurality of data lines. Each of the plurality of switching transistors is used for receiving the scan signal transmitted through each of the plurality of scan lines coupled to each of the plurality of switching transistors and for conducting the data signal transmitted through each of the plurality of data lines coupled to each of the plurality of switching transistors to the corresponding pixel electrode. The plurality of horizontal repair lines are disposed on one side of the plurality of scan lines one to one. The plurality of vertical repair lines are disposed on one side of the plurality of data lines one to one. 
     According to the present invention, a method of repairing a flat display panel is proposed. The flat display panel comprises a plurality of matrix-arranged pixel electrodes, a plurality of scan lines parallel to one another and extended along a first direction, a plurality of data lines parallel to one another and extended along a second direction, a plurality of switching transistors, a plurality of horizontal repair lines parallel to the plurality of scan lines, and a plurality of vertical repair lines parallel to the plurality of data lines. The second direction is perpendicular to the first direction. The plurality of switching transistors coupled to the plurality of pixel electrodes, to the plurality of scan lines, and to the plurality of data lines one to one. Each of the plurality of switching transistors are used for receiving the scan signal transmitted through each of the plurality of scan lines coupled to each of the plurality of switching transistors and for conducting the data signal transmitted through each of the to plurality of data lines coupled to each of the plurality of switching transistors to the corresponding pixel electrode. The plurality of horizontal repair lines are disposed on one side of the plurality of scan lines one to one. The plurality of vertical repair lines are disposed on one side of the plurality of data lines one to one. The method comprises the step of: detecting whether any of the plurality of the scan line is to be a broken scan line; selecting a first horizontal repair line from the plurality of horizontal repair lines and selecting a first vertical repair line and a second vertical repair line front the plurality of vertical repair lines, when one of the plurality of scan lines is detected to he the broken scan line, causing a pixel electrode unable to receive the scan signal, the first and second vertical repair lines being disposed on both sides of the pixel electrode, respectively; forming a first cutting zone and a second cutting zone on the first horizontal repair line, forming a third cutting zone and a fourth cutting zone on the first vertical repair line, forming a fifth cutting zone and a sixth cutting zone on the second vertical repair line, the first and second vertical repair lines being located between the first and second cutting zones, the first horizontal repair line and the broken scan line being located between the third and fourth cutting zones as well as between the fifth and sixth cutting zones; connecting the first and second vertical repair lines with the broken scan line and the first horizontal repair line at their overlapping areas, respectively. 
     According to the present invention, a method of repairing a flat display panel is proposed. The flat display panel comprises a plurality of matrix-arranged pixel electrodes, a plurality of scan lines parallel to one another and extended along a first direction, a plurality of data lines parallel to one another and extended along a second direction, a plurality of switching transistors, a plurality of horizontal repair lines parallel to the plurality of scan lines, and a plurality of vertical repair lines parallel to the plurality of data lines. The second direction is perpendicular to the first direction. The plurality of switching transistors coupled to the plurality of pixel electrodes, to the plurality of scan lines, and to the plurality of data lines one to one. Each of the plurality of switching transistors are used for receiving the scan signal transmitted thro each of the plurality of scan lines coupled to each of the plurality of switching transistors and for conducting the data signal transmitted through each of the plurality of data tines coupled to each of the plurality of switching transistors to the corresponding pixel electrode. The plurality of horizontal repair lines are disposed on one side in of the plurality of scan lines one to one. The plurality of vertical repair lines are disposed on one side of the plurality of data lines one to one. The method comprises the step of: detecting whether any of the plurality of the data line is to be a broken data line; selecting a first horizontal repair line and a second horizontal repair line from the plurality of horizontal repair lines and selecting a first vertical repair line from the plurality of vertical repair lines, when one of the plurality of data lines is detected to be the broken data line, causing a pixel electrode unable to receive the scan signal, the first and second horizontal repair lines being disposed on both sides of the pixel electrode, respectively; forming a first cutting zone and a second cutting zone on the first vertical repair line, forming a third cutting zone and a fourth cutting zone on the first horizontal repair line, forming a fifth cutting zone and a sixth cutting zone on the second horizontal repair line, the first and second horizontal repair lines and the pixel electrode being located between the first and second cutting zones, the first vertical repair line and the broken data flue being located between the third and fourth cutting zones as well as between the fifth and sixth cutting zones; connecting the first and second horizontal repair lines with the broken data line and the first vertical repair line at their overlapping areas, respectively. 
     In one aspect of the present invention, the steps of forming the first cutting zone, the second cutting zone, forming the third cutting zone and the fourth cutting zone, and forming the fifth cutting zone and the sixth cutting zone are performed by using laser. The steps of connecting the first and second horizontal repair lines with the broken data line and the first vertical repair line are performed by using laser. 
     In contrast to prior art, the present invention proposes a flat display panel with a structure having repair lines and the method of repairing the broken lines thereof. By using laser to cut any broken data line or scan line and then to connect specific repair lines, so that data signal or scan signal which is unable to be transmitted through the broken data line or the broken scan line can be transmitted through the repair lines. The flat display panel with a structure having repair lines and the method of repairing broken lines thereof can reduce scrapped products. 
     These and other features, aspects and advantages of the present disclosure will become understood with reference to the following description, appended claims and accompanying figures. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a partial schematic diagram of a conventional LCD panel. 
         FIG. 2  is a partial schematic diagram of a flat display panel with a structure having repair lines before a broken scan line is repaired according to the present invention. 
         FIG. 3  is a schematic diagram showing that the flat display panel in  FIG. 2  has undergone repairs according to a first embodiment of the present invention. 
         FIG. 4  is a schematic diagram showing that the flat display panel in  FIG. 2  has undergone repairs according to a second embodiment according to the present invention, 
         FIG. 5  is a partial schematic diagram of a flat display panel with a structure having repair lines before broken data lines are repaired according to the present invention. 
         FIG. 6  is a schematic diagram showing that the flat display panel in  FIG. 5  has undergone repairs according to a third embodiment of the present invention. 
         FIG. 7  is a schematic diagram showing that the flat display panel in  FIG. 5  has undergone repairs according to a fourth embodiment of the present invention. 
         FIG. 8  is a partial schematic diagram of a flat display panel with a structure having repair lines before a broken scan line and a broken data line are repaired according to the present invention. 
         FIG. 9  is a partial schematic diagram showing that the flat display panel in  FIG. 8  has undergone repairs according to a fifth embodiment of the present invention. 
         FIG. 10  is a partial schematic diagram showing that the flat display panel in  FIG. 8  has undergone repairs according to a sixth embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Spatially relative terms, such as “beneath”, “below”, “lower”, “above”, “upper” and the like, may he used herein for ease of description to describe one element or feature&#39;s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. 
     Please refer to  FIG. 2  which is a partial schematic diagram of a flat display panel with a structure having repair lines before a broken scan line is repaired according to the present invention. The flat display panel comprises a plurality of pixel electrodes and hundreds of scan lines, data lines, common lines, horizontal repair lines, and vertical repair lines. For brevity and for facilitating explanations, the flat display panel is partially illustrated in the following embodiments. The flat display panel comprises a plurality of pixel electrodes  200   a  and  200   b  in a matrix alignment, a plurality of scan lines  201   a  and  201   b  parallel to one another and extended along a first direction A, a plurality of data lines  202   a  and  202   b  parallel to one another and extended along a second direction B, a plurality of switching transistors  203   a  and  203   b , a plurality of horizontal repair lines  206   a  and  206   b  parallel to the scan line  201   a , and a plurality of vertical repair lines  207   a  and  207   b  parallel to the data line  202   a . The second direction B is perpendicular to the first direction A. Preferably, the switching transistor  203   a  is TFT. The switching transistor  203   a  has agate coupled to the scan line  201   a , a source coupled to the data line  202   a , and admin coupled to the pixel electrode  200   a . The structure and connecting relation of the switching transistor  203   b  is the same as that of the switching transistor  203   a , so no further details are released hereafter. When the switching transistor  203   a  receives a scan signal transmitted through the scan line  201   a  coupled to the switching transistor  203   a , the switching transistor  203   a  conducts a data signal transmitted through the data line  202   a  coupled to the switching transistor  203   a  to the corresponding pixel electrode  200   a . A common line  205  outputs common voltage Vcom. Liquid crystal (LC) molecules between the pixel electrode  200   a  and the common line  205  rotate to display different gray levels based on a voltage difference between the common voltage Vcom provided by the common line  205  and data voltage received by the pixel electrode  200   a.    
     In cell processes, the photoengraving process (PEP) with a mask is used to form a plurality of scan lines  201   a  and  201   b  and a plurality of horizontal repair lines  206   a  and  206   b  simultaneously. The plurality of horizontal repair lines  206   a  and  206   b  are disposed on one side of the plurality of scan lines  201   a  and  201   b  one to one. Next, the PEP with another mask is used to form a plurality of data lines  202   a  and  202   b  and a plurality of vertical repair lines  207   a  and  207   b  simultaneously. The plurality of vertical repair lines  207   a  and  207   b  are disposed on one side of the plurality of data lines  202   a  and  202   b  one to one. Each of the plurality of scan lines  201   a  and  201   b  and each of the plurality of data lines  202   a  and  202   b  axe probed if each of the lines is able to transmit signals normally during the cell process. Once the scan line  201   a  is broken, as seen in a breaking G of  FIG. 2 , semi signals cannot he transmitted to the switching transistor  203   b.    
     Refer to  FIG. 3 , which is a schematic diagram showing that the flat display panel in  FIG. 2  has undergone repairs according to a first embodiment of the present invention. If one of the plurality of scan lines  201   a  is probed to have the breaking the pixel electrode  200   a  cannot receive scan signals. At this time, any one of the plurality of horizontal repair lines is chosen as a first horizontal repair line, and any two of the plurality of vertical repair lines are chosen as a first and a second vertical repair line. In this embodiment, the horizontal repair line  206   a  is selected as a first horizontal repair line, and the vertical repair lines  207   a  and  207   b  are selected as a first and a second vertical repair line, respectively. Note that the first vertical repair line  207   a  and the second vertical repair line  207   b  have to be disposed on both sides of the pixel electrode  200   a  connected to the broken scan line  201   a.    
     Afterwards, laser cutting is performed on the first horizontal repair line  206   a  to forma first cutting zone  2061  and a second cutting zone  2062 . Laser cutting is also performed on the first vertical repair line:  207   a  and the second vertical repair line  207   b  at both sides of the pixel electrode  200   a  to form a third cutting zone  2073  and a fourth cutting zone  2074 , and a fifth cutting zone  2075  and a sixth cutting zone  2076 , respectively. The two vertical repair lines  207   a  and  207   b  and the pixel electrode  200   a  are located between the first cutting zone  2061  and the second cutting zone  2062 . The first horizontal repair line  206   a  and the broken scan line  201   a  are located between the third cutting zone  2073  and the fourth cutting zone  2074  as well as between the fifth cutting zone  2075  and the sixth cutting zone  2076 . 
     Next, laser is performed on the overlapping area  2011  of the first vertical repair line  207   a  and the broken scan line  201   a  to connect the two lines, on the overlapping area  2063  of the first vertical repair line  207   a  and the first horizontal repair line  206   a  to connect the two lines, on the overlapping area  2012  of the second vertical repair line  207   b  and the broken scan line  201   a  to connect the two lines, and finally on the overlapping area  2064  of the second vertical repair line  207   b  and the first horizontal repair line  206   a  to connect the two lines. As described above, the two vertical repair lines  207   a  and  207   b  and the horizontal repair line  206   a  form a bypass route to bypass the breaking G on the scan line  201   a , so that scan signals can detour the breaking G on the scan line  201   a  and be transmitted smoothly through the bypass route. 
     Refer to  FIG. 4 , which is a schematic diagram showing that the flat display panel in  FIG. 2  has undergone repairs according to a second embodiment according to the present invention. The horizontal repair line  206   b  is chosen from the plurality of horizontal repair lines and is serves as a first horizontal repair line. The vertical repair lines  207   a  and  207   c  are chosen from the plurality of vertical repair lines and serve as a first and a second vertical repair line according to another embodiment. The first vertical repair line  207   a  and the second vertical repair line  207   c  have to be disposed on both sides of the pixel electrode  200   a  connected to the broken scan line  201   a.    
     Afterwards, laser cutting is performed on the first horizontal repair line  206   a  to form a first cutting zone  2061  and a second cutting zone  2062 . Laser cutting is also performed on the first vertical repair line  207   a  and the second vertical repair line  207   c  at both sides of the pixel electrode  200   a  to form a third cutting zone  2073  and a fourth cutting zone  2074 , and a fifth cutting zone  2075  and a sixth cutting zone  2076 , respectively. The two vertical repair lines  207   a  and  207   c  and the pixel electrode  200   a  are located between the first cutting zone  2061  and the second cutting zone  2062 . The first horizontal repair line  206   a  and the broken scan line  201   a  are located between the third cutting zone  2073  and the fourth cutting zone  2074  as well as between the fifth cutting zone  2075  and the sixth cutting zone  2076 . 
     Next, laser is applied on the overlapping area  2011  of the first vertical repair line  207   a  and the broken scan line  201   a  to connect the two lines, on the overlapping area  2063  of the first vertical repair line  207   a  and the first horizontal repair line  206   a  to connect the two lines, on the overlapping area  2012  of the second vertical repair line  207   e  and the broken scan line  201   a  to connect the two lines, and finally on the overlapping area  2064  of the second vertical repair line  207   c  and the first horizontal repair line  206   a  to connect the two lines. As described above, the two vertical repair lines  207   a  and  207   c  and the horizontal repair line  206   a  form a bypass route to bypass the breaking G on the scan line  201   a , so that scan signals can detour the breaking G on the scan line  201   a  and be transmitted smoothly through the bypass route. 
     It is notified that only one horizontal repair line and two vertical repair lines near the broken scan line  201   a  are chosen to be exemplified in  FIG. 3  and  FIG. 4  for brevity. However, it can be found in  FIG. 3  and  FIG. 4  that, for any broken scan line, it practically allows to choose any two of the plurality of vertical repair lines at both sides of the pixel electrode connected to the broken scan line as well as any one of the plurality of horizontal repair lines to form a bypass route to bypass the breaking G on the scan line. 
     Refer to  FIG. 5 , which is a partial schematic diagram of a flat display panel with a structure having repair lines before broken data lines are repaired according to the present invention. The flat display panel comprises a plurality of pixel electrodes  300   a  and  300   b , a plurality of scan lines  301   a ,  301   b , and  3010  parallel to one another and extended along a first direction A, a plurality of data lines  302   a ,  302   b , and  302   c  parallel to one another and extended along a second direction B, a plurality of switching transistors  303   a ,  303   b , and  303   c,  a plurality of horizontal repair lines  306   a ,  306   b , and  306   e  parallel to the scan line  301   a , and a plurality of vertical repair lines  307   a ,  307   b , and  307   c  parallel to the data line  302   a . The second direction B is perpendicular to the first direction A. The switching transistor  303   a  can be a TFT. The switching transistor  303   a  has agate coupled to the scan line  301   a , a source coupled to the data line  302   a , and a drain coupled to the pixel electrode  300   a . The structure and connecting relation of the switching transistors  303   b  and  303   e  is the same as that of the switching transistor  303   a , so no further details are released hereafter. When the switching transistor  303   a  receives a scan signal transmitted through the scan line  301   a  coupled to the switching transistor  303   a , the switching transistor  303   a  conducts a data signal transmitted through the data line  302   a  coupled to the switching transistor  303   a  to the corresponding pixel electrode  300   a . A common line  305  outputs common voltage Vcom. LC molecules between the pixel electrode  300   a  and the common line  305  rotate to display different gray levels based on a voltage difference between the common voltage Vcom provided by the common line  305  and data voltage received by the pixel electrode  300   a.    
     In cell processes, the PEP with a mask is used to form a plurality of scan lines  301   a,    301   b , and  301   c  and a plurality of horizontal repair lines  306   a ,  306   b , and  306   e  simultaneously. The plurality of horizontal repair lines  306   a ,  306   b , and  306   c  are disposed on one side of the plurality of scan lines  301   a ,  301   b , and  301   c  one to one. Next, the PEP with another mask is used to form a plurality of data lines  302   a ,  302   b , and  302   c  and a plurality of vertical repair lines  307   a ,  307   b , and  307   c  simultaneously. The plurality of vertical repair lines  307   a ,  307   b,  and  307   c  are disposed on one side of the plurality of data lines  302   a ,  302   b , and  302   c  one to one. Each of the plurality of scan lines  301   a  and  301   b  and each of the plurality of data lines  302   a  and  302   b  are detected to see if each of the lines is able to transmit signals normally during the cell process. Once the data line  302   a  is broken, data signals cannot be transmitted, as a breaking G in  FIG. 5  shows. 
     Refer to  FIG. 6 , which is a schematic diagram showing that the flat display panel in  FIG. 5  has undergone repairs according to a third embodiment of the present invention. If one data lines  302   a  is found to have the breaking G; the pixel electrode  300   a  cannot receive data signals. At this time, any two of the plurality of horizontal repair lines are chosen as a first and a second horizontal repair line, and any one of the plurality of vertical repair lines is chosen as a first vertical repair line. In this embodiment, the horizontal repair lines  306   a  and  306   b  are selected as a first and a second horizontal repair line, and the vertical repair line  307   a  is selected as a first vertical repair line. The first horizontal repair lines  306   a  and the second horizontal repair line  306   b  have to be disposed on both sides of the pixel electrode  300   a  which is connected to the broken data line  302   a.    
     Afterwards, laser cutting is performed on the first vertical repair line  307   a  to form a first cutting zone  3071  and a second cutting zone  3072 . Laser cutting is also performed on the first horizontal repair line  306   a  and the second horizontal repair line  306   b  at both sides of the pixel electrode  300   a  to form a third cutting zone  3063  and a fourth cutting zone  3064 , and a fifth cuffing zone  3065  and a sixth cutting zone  3066 , respectively. The two horizontal repair lines  306   a  and  306   b  and the pixel electrode  300   a  are located between the first cutting zone  3071  and the second cutting zone  3072 . The first vertical repair line  307   a  and the broken data line  302   a  are located between the third cutting zone  3063  and the fourth cutting zone  3064  as well as between the fifth cutting zone  3065  and the sixth cutting zone  3066 . 
     Next, laser is applied on the overlapping area  3021  of the first horizontal repair line  306   a  and the broken data line  302   a  to connect the two lines, on the overlapping area  3061  of the first horizontal repair line  306   a  and the first vertical repair line  307   a  to connect the two lines, on the overlapping area  3022  of the second horizontal repair line  306   b  and the broken data line  302   a  to connect the two lines, and finally on the overlapping area  3062  of the second horizontal repair line  306   b  and the first vertical repair line  307   a  to connect the two lines. As to described above, the two vertical repair lines  306   a  and  306   b  and the vertical repair line  307   a  form a bypass route to bypass the breaking G on the data line  302   a , so that data signals can detour the breaking G on the data line  302   a  and be transmitted smoothly through the bypass route. 
     Refer to  FIG. 7 , which is a schematic diagram showing that the flat display panel in  FIG. 5  has undergone repairs according to a fourth embodiment of the present invention. The horizontal repair lines  306   c  and  306   b  are chosen to be a first and a second horizontal repair line, and the vertical repair line  307   e  is chosen to be a first vertical repair line. The first horizontal repair line  306   c  and the second horizontal repair line  306   b  have to be disposed on both sides of the pixel electrode  300   a  connected to the broken data line  302   a.    
     Afterwards, laser cutting is performed on the first vertical repair line  307   c  to form a first cutting zone  3071  and a second cutting zone  3072 . Laser cutting is also performed on the first horizontal repair line  306   c  and the second horizontal repair line  306   b  at both sides of the pixel electrode  300   a  to form a third cutting zone  3063  and a fourth cutting zone  3064 , and a fifth cutting zone  3065  and a sixth cutting zone  3066 , respectively. The two horizontal repair lines  306   e  and  306   b  and the pixel electrode  300   a  are located between the first cutting zone  3071  and the second cutting zone  3072 . The first vertical repair line  307   e  and the broken data line  302   a  are located between the third cutting zone  3063  and the fourth cutting zone  3064  as well as between the fifth cutting zone  3065  and the sixth cutting zone  3066 . 
     Next, laser is applied on the overlapping area  3021  of the first horizontal repair line  306   c  and the broken data line  302   a  to connect the two lines, on the overlapping area  3061  of the first horizontal repair line  306   c  and the first vertical repair line  307   c  to connect the two lines, on the overlapping area  3022  of the second horizontal repair line  306   b  and the broken data line  302   a  to connect the two lines, and finally on the overlapping area  3062  of the second horizontal repair line  306   b  and the first vertical repair line  307   c  to connect the two lines. As described above, the two vertical repair lines  306   c  and  306   b  and the vertical repair line  307   c  form a bypass route to bypass the breaking G on the data line  302   a , so that data signals can detour the breaking G on the data line  302   a  and be transmitted smoothly through the bypass route. 
     It is notified that only two horizontal repair lines and one vertical repair fine near the broken data line  302   a  are chosen to be exemplified in  FIG. 6  and  FIG. 7  for brevity. However, it can be found in  FIG. 6  and  FIG. 7  that, for any broken data line, it practically allows to choose any two of the plurality of horizontal repair lines at both sides of the pixel electrode connected to the broken data line as well as any one of the plurality of vertical repair lines to form a bypass route to bypass the breaking G on the data line. 
     Refer to  FIG. 8 , which is a partial schematic diagram of a flat display panel with a structure having repair lines before a broken scan line and a broken data line are repaired according to the present invention. The flat display panel comprises a plurality of pixel electrodes  400   a - 400   d , a plurality of scan lines  401   a - 401   c  parallel to one another and extended along a first direction A, a plurality of data lines  402   a - 402   c  parallel to one another and extended along a second direction B, a plurality of switching transistors  403   a - 403   d , a plurality of horizontal repair lines  406   a - 406   c  parallel to the scan line  401   a , and a plurality of vertical repair lines  407   a - 407   c  parallel to the data line  402   a . The second direction B is perpendicular to the first direction A. The switching transistor  403   a  can he a TFT. The switching transistor  403   a  has a gate coupled to the scan line  401   a , a source coupled to the data line  402   a , and a drain coupled to the pixel electrode  400   a . The structure and connecting relation of the switching transistors  403   b - 403   d  are the same as that of the switching transistor  403   a , so no further details are released hereafter. Upon receiving a scan signal transmitted through the scan line  401   a , the switching transistor  403   a  conducts a data signal transmitted through the data line  402   a  to the corresponding pixel electrode  400   a . A common line  405  outputs common voltage Vcom. LC molecules between the pixel electrode  400   a  and the common line  405  rotate to display different gray levels based on a voltage difference between the common voltage Vcom provided by the common line  405  and data voltage received by the pixel electrode  400   a.    
     In cell processes, the PEP with a mask is used to form a plurality of scan lines  401   a - 401   c  and a plurality of horizontal repair lines  406   a - 406   c  simultaneously. The plurality of horizontal repair lines  406   a - 406   c  are disposed on one side of the plurality of scan lines  401   a - 401   c  one to one. Next, the PEP with another mask is used to form a plurality of data lines  402   a - 402   c  and a plurality of vertical repair lines  407   a - 407   c  simultaneously. The plurality of vertical repair lines  407   a - 407   c  are disposed on one side of the plurality of data lines  402   a - 402   c  one to one. Each of the plurality of scan lines  401   a - 401   c  and each of the plurality of data lines  402   a - 402   c  are probed to see if each of the lines is able to transmit signals normally during the cell process. Once one of the data lines and one of the scan lines are broken, data signals and scan signals cannot be transmitted, as breakings G in  FIG. 8  show. 
     Refer to  FIG. 9 , which is a partial schematic diagram showing that the flat display panel in  FIG. 8  has undergone repairs according to a fifth embodiment of the present invention. When both of the scan line  401   a  and the data line  402   a  are detected to have breakings G, any three of the plurality of horizontal repair lines, e.g. the horizontal repair lines  406   a ,  406   b , and  406   c  are selected as a first, a second, and a third horizontal repair lines, while any three of the plurality of vertical repair lines, e.g. the vertical repair lines  407   a ,  407   b , and  407   c , are selected as a first, a second, and a third vertical repair lines. For simple description, the first horizontal repair line  406   a , the first vertical repair line  407   a , and the second vertical repair line  407   b  are used to repair the broken scan line  401   a , so the first vertical repair line  407   a  and the second vertical repair line  407   b  have to be disposed on both sides of the pixel electrode  400   a  connected to the broken scan line  401   a . In addition, the second horizontal repair line  406   b , the third horizontal repair line  406   c , and the third vertical repair line  407   c  are used to repair the broken data line  402   a , so the second horizontal repair line  406   b  and the third horizontal repair line  406   c  have to be disposed on both sides of the pixel electrode  400   a  connected to the broken data line  402   a.    
     Afterwards, laser cutting is performed on the first horizontal repair line  406   a  to form a first cutting zone  4061  and a second cutting zone  4062 . Laser cutting is also performed on the two vertical repair lines  407   a  and  407   b  at both sides of the pixel electrode  400   a  to form a third cutting zone  4073  and a fourth cutting zone  4074 , and a fifth cutting zone  4075  and a sixth cutting zone  4076 , respectively. The two vertical repair lines  407   a  and  407   b  and the pixel electrode  400   a  are located between the first cutting zone  4061  and the second cutting zone  4062 . The first horizontal repair line  406   a  and the broken scan line  401   a  are located between the third cutting zone  4073  and the fourth cutting zone  4074  as well as between the fifth cutting zone  4075  and the sixth cutting zone  4076 . 
     In addition, laser cutting is performed on the third vertical repair line  407   c  to form a seventh cuffing zone  4077  and an eighth cuffing zone  4078 . Also, laser cutting is performed on the two horizontal repair lines  406   b  and  406   e  to form a ninth cutting zone  4081  and a tenth cutting zone  4082 , and an eleventh cuffing zone  4083  and a twelfth cutting zone  4084 , respectively. The two horizontal repair lines  406   b  and  406   c  and the pixel electrode  400   a  are located between the seventh cutting zone  4077  and the eighth cutting zone  4078 . The third vertical repair line  407   c  and the broken data line  402   a  are located between the ninth cutting; zone  4081  and the tenth cutting zone  4082  as well as between the eleventh cutting zone  4083  and the twelfth cutting zone  4084 . 
     Subsequently, laser is applied to electrically connect the first vertical repair line  407   a  with the broken scan line  401   a  at the overlapping area  4011 , to electrically connect the first vertical repair line  407   a  with the first horizontal repair line  406   a  at the overlapping area  4063 , to electrically connect the second vertical repair line  407   b  with the broken scan line  401   a  at the overlapping area  4012 , and to electrically connect the second vertical repair line  407   b  with the first horizontal repair line  406   a  at the overlapping area  4064 . As described above, the two vertical repair lines  407   a  and  407   b  and the first horizontal repair line  406   a  form a bypass route to bypass the breaking G tarn the scan line  401   a , so that scan signals can detour the breaking G and be transmitted smoothly through the bypass route. 
     Furthermore, laser is applied to electrically connect the second horizontal repair line  406   b  with the broken data line  402   a  at the overlapping area  4091 , to electrically connect the second horizontal repair line  406   b  with the third vertical repair line  407   c  at the overlapping area  4092 , to electrically connect the third horizontal repair line  406   c  with the broken data line  402   a  at the overlapping area  4093 , and to electrically connect the third horizontal repair line  406   c  with the third vertical repair line  407   c  at the overlapping area  4094 . As described above, the two horizontal repair lines  406   b  and  406   e  and the third vertical repair line  407   c  form a bypass route to bypass the breaking G of the data line  402   a , so that data signals can detour and be transmitted smoothly to the switching transistors in the next row through the bypass route though the data line  402   a  is broken at the breaking G. 
     Refer to  FIG. 10 , which is a partial schematic diagram showing that the flat display panel in  FIG. 8  has undergone repairs according to a sixth embodiment of the present invention. In this embodiment, when both of the scan line  401   a  and the data line  402   a  are detected to have breakings G, the horizontal repair lines  406   c ,  406   b , and  406   a  arc selected as a first, a second, and a third horizontal repair lines, while the vertical repair lines  407   c ,  407   b , and  407   a , are selected as a first, a second, and a third vertical repair lines. For simple description, the first horizontal repair line  406 ; the first vertical repair line  407   c , and the second vertical repair line  407   b  are used to repair the broken scan line  401   a , so the first vertical repair line  407   c  and the second vertical repair line  407   b  have to be disposed on both sides of the pixel electrode  400   a  connected to the broken scan line  401   a . In addition, the second horizontal repair line  406   b , the third horizontal repair line  406   a , and the third vertical repair line  407   a  are used to repair the broken data line  402   a , so the second horizontal repair line  406   b  and the third horizontal repair line  406   a  have to be disposed on both sides of the pixel electrode  400   a  connected to the broken data line  402   a.    
     Afterwards, laser cutting is performed on the first horizontal repair line  406   c  to form a first cutting zone  4061  and a second cutting zone  4062 . Laser cutting is also performed on the two vertical repair lines  407   c  and  407   b  at both sides of the pixel electrode  400   a  to form a third cutting zone  4073  and a fourth cutting zone  4074 , and a fifth cutting zone  4075  and a sixth cutting zone  4076 , respectively. The two vertical repair lines  407   c  and  407   b  and the pixel electrode  400   a  are located between the first cutting zone  4061  and the second cutting zone  4062 . The first horizontal repair line  406   c  and the broken scan line  401   a  are located between the third cutting zone  4073  and the fourth cutting zone  4074  as well as between the fifth cutting zone  4075  and the sixth cutting zone  4076 . 
     In addition, laser cutting is performed on the third vertical repair line  407   a  to form a seventh cutting zone  4077  and an eighth cutting zone  4078 . Also, laser cutting is performed on the two horizontal repair lines  406   b  and  406   a  to form a ninth cutting zone  4081  and a tenth cutting zone  4082 , and an eleventh cutting zone  4083  and a twelfth cutting zone  4084 , respectively. The two horizontal repair lines  406   b  and  406   a  and the pixel electrode  400   a  arc located between the seventh cutting zone  4077  and the eighth cutting zone  4078 . The third vertical repair line  407   a  and the broken data line  402   a  are located between the ninth cutting zone  4081  and the tenth cutting zone  4082  as well as between the eleventh cutting zone  4083  and the twelfth cutting zone  4084 . 
     Subsequently, laser is applied to electrically connect the first vertical repair line  407   c  with the broken scan line  401   a  at the overlapping area  4011 , to electrically connect the first vertical repair line  407   c  with the first horizontal repair line  406   c  at the overlapping area  4063 , to electrically connect the second vertical repair line  407   b  with the broken scan line  401   a  at the overlapping area  4012 , and to electrically connect the second vertical repair line  407   b  with the first horizontal repair line  406   c  at the overlapping area  4064 . As described above, the two vertical repair lines  407   c  and  407   b  and the first horizontal repair line  406   c  form a bypass route to bypass the breaking G on the scan line  401   a , so that scan signals can detour the breaking G and be transmitted smoothly through the bypass route. 
     Furthermore, laser is applied to electrically connect the second horizontal repair line  406   b  with the broken data line  402   a  at the overlapping area  4091 , to electrically connect the second horizontal repair line  406   b  with the third vertical repair line  407   a  at the overlapping area  4092 , to electrically connect the third horizontal repair line  406   a  with the broken data line  402   a  at the overlapping area  4093 , and to electrically connect the third horizontal repair line  406   a  with the third vertical repair line  407   a  at the overlapping area  4094 . As described above, the two horizontal repair lines  406   b  and  406   a  and the third vertical repair line  407   a  form a bypass route to bypass the breaking  0  of the data line  402   a , so that data signals can detour and be transmitted smoothly to the switching transistors in the next row through the bypass route though the data line  402   a  is broken at the breaking G. 
     It is notified that only the horizontal repair lines and the vertical repair lines near the broken scan tine  401   a  and the broken data line  402   a  are chosen to be exemplified in  FIG. 9  and  FIG. 10  for brevity. However, it can be found in  FIG. 9  and  FIG. 10  that, for any broken scan line or any broken data line, it is practically allows to choose any two of the plurality of vertical repair lines at both sides of the pixel electrode connected to the broken scan line as well as any one of the horizontal repair lines to form a bypass route to bypass the breaking G of the scan line. Meanwhile, it is also practically allows to choose any two of the horizontal repair lines at both sides of the pixel electrode connected to the broken data line as well as any one of the vertical repair lines to form a bypass route to bypass the breaking G of the data line. 
     While the present invention has been described in connection with what is considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements made without departing from the scope of the broadest interpretation of the appended claims.