Patent Publication Number: US-9837006-B2

Title: Liquid crystal display device and display system with the same

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of Korean Patent Application No. 10-2014-0195839, filed on Dec. 31, 2014 which is hereby incorporated by reference in its entirety for all purposes as if fully set forth herein. 
     BACKGROUND 
     Field of the Disclosure 
     The present application relates to a liquid crystal display device and a display system with the same. 
     Description of the Related Art 
     Display devices are devices for displaying images and information. Among the display devices, a liquid crystal display device adjusts light transmittance of liquid crystal using an electric field and displays the image. 
     The liquid crystal display device allows data voltages to be transferred from a data driver, which is controlled by timing control signals applied from a timing controller, to a liquid crystal display panel. In accordance therewith, images can be displayed. 
     A liquid crystal display device may be applied to a vehicle. For example, the liquid crystal display device is disposed in a center console between a driver&#39;s seat and a passenger seat and used in a navigator or a video reproduction. 
     If the liquid crystal display device is used in the navigator, the navigator cannot display some images due to its abnormal screen. In this case, a driver driving his vehicle toward a destination on the basis of indications of the navigator may be largely inconvenienced. 
     In view of this point, it is greatly necessary to closely diagnose components of the liquid crystal display device before an abnormity is generated in the liquid crystal display device. Nevertheless, technologies regarding such diagnosable display device and system are not being actively developed up to the present. 
     BRIEF SUMMARY 
     Accordingly, embodiments of the present application are directed to a liquid crystal display device and a display device using the same that substantially obviate one or more problems due to the limitations and disadvantages of the related art. 
     The embodiments provide a liquid crystal display device and a display device with the same which are adapted to precisely diagnose abnormal probabilities by performing a diagnosis for a detailed portion. 
     Additional features and advantages of the embodiments will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments. The advantages of the embodiments will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. 
     In order to achieve the above-mentioned features and the other objects, a liquid crystal display device according to a general aspect of the present embodiment includes a diagnosis controller configured to receive abnormity detection signals representing whether or not components of the liquid crystal display device are normal. The components of the liquid crystal display device can include an LVDS interface, a timing controller, a data driver circuit, a backlight driver, a supply voltage generator and so on. Such a liquid crystal display device handles treatable abnormities without any external help. In accordance therewith, complexity caused by transferring a large number of signals can be simplified. 
     A display system according to another general aspect of the present embodiment includes: a plurality of liquid crystal display devices which each includes a diagnosis controller configured to receive abnormity detection signals representing whether or not components of the liquid crystal display device are normal; and a system controller configured to perform measures opposite to the diagnosed resultants which are transferred from the liquid crystal display devices. As such, the system controller is not necessary to directly diagnose the liquid crystal display devices. The liquid crystal display devices can generally diagnose their states and transfer their diagnosed resultants to the system controller. In accordance therewith, each of the liquid crystal display devices can be connected to the system controller through only one signal line. Therefore, the number of signal lines can be largely reduced, and furthermore a complex wiring structure can be simplified. 
     Other systems, methods, features and advantages will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the present disclosure, and be protected by the following claims. Nothing in this section should be taken as a limitation on those claims. Further aspects and advantages are discussed below in conjunction with the embodiments. It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the embodiments and are incorporated herein and constitute a part of this application, illustrate embodiment(s) of the present disclosure and together with the description serve to explain the disclosure. In the drawings: 
         FIG. 1  is a perspective view showing the interior of a vehicle which includes a plurality of liquid crystal display devices in accordance with an embodiment of the present disclosure; 
         FIG. 2  is a block diagram showing a display system of the vehicle according to an embodiment of the present disclosure; 
         FIG. 3  is a block diagram showing one of the liquid crystal display devices shown in  FIG. 1 ; 
         FIG. 4  shows a state that a first abnormity detection signal is detected in the liquid crystal display device of  FIG. 3 ; 
         FIG. 5  shows a state that a second abnormity detection signal is detected in the liquid crystal display device of  FIG. 3 ; 
         FIG. 6  shows a state that a third abnormity detection signal is detected in the liquid crystal display device of  FIG. 3 ; 
         FIG. 7  is a circuit diagram showing an example of the diagnosis controller included in the liquid crystal display device of  FIG. 3 ; 
         FIG. 8  is a circuit diagram showing a state that a third abnormity detection signal is input to the diagnosis controller in  FIG. 3 ; and 
         FIG. 9  is a circuit diagram showing another example of the diagnosis controller included in the liquid crystal display device of  FIG. 3 . 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Throughout this disclosure including the drawings, the same and like parts should be referred to as the same reference numbers and the overlapping description thereof can be omitted. Suffixes of component used in this disclosure can be defined or mixedly used for the convenience of explanation. In other words, the suffixes of the components have no meanings or functions distinguished from one another. In other instances, well-known technologies have not been described in detail in order to avoid obscuring the present disclosure. Also, the accompanying drawings are prepared in order to provide an understanding of the various embodiments of the present disclosure. As such, the technical spirits of the present disclosure are not limited to the accompanying drawings. In accordance therewith, it must be considered that the scope of the present disclosure includes various changes, modifications, equivalents and substitutes of the embodiments without departing from the technical spirit of the present disclosure. 
       FIG. 1  is a perspective view showing the interior of a vehicle which includes a plurality of liquid crystal display devices in accordance with an embodiment of the present disclosure. 
     As shown in  FIG. 1 , a plurality of liquid crystal display devices can be disposed in the interior of a vehicle. For example, a first liquid crystal display device  10  can be disposed in front of a driver&#39;s car seat, a second liquid crystal display device  20  can be disposed in a center console, and at least one third liquid crystal display device  30  can be disposed in front of a back car seat, i.e., on a rear surface of a backrest of a driver&#39;s car seat or a booster car seat. The third liquid crystal display device  30  can be disposed on either only the rear surface of the backrest of the driver&#39;s car seat or both of the rear surfaces of the backrests of the driver&#39;s car seat and the booster car seat. 
     As an example, the first liquid crystal display device  10  can be a display device of a console board, the second liquid crystal display device  20  can be a display of a navigator, and the third liquid crystal display device  30  can be a display device of an entertainment appliance. As such, a variety of information including a speed meter, a fuel gauge and so on can be displayed on the first liquid crystal display device  10 . The second liquid crystal display device  20  can display navigation information. The third liquid crystal display device  30  can include an audio playing function, a video playing function and a broadcast channel tuning function. Also, a variety of information such as movies, broadcast programs, singing exercise programs, games or others can be displayed on the third liquid crystal display device  30 . However, the third liquid crystal display device  30  is not limited to these. 
     In this manner, the variety information which must be frequently checked by a driver driving a vehicle is displayed on the first liquid crystal display device  10  and the second liquid crystal display device  20 . As such, any abnormal symptom must not be generated in the first and second liquid crystal display devices  10  and  20 . If any information is not displayed on the first liquid crystal display device  10  due to the generation of an abnormal phenomenon in the first liquid crystal display device  10 , the driver cannot obtain various real-time information including a current driving state, a current fuel quantity and so on. On the other hand, when the second liquid crystal display device  20  cannot display information due to an abnormity, the driver must determine his own way to the destination. 
     In accordance therewith, it is necessary that the first and second liquid crystal display devices  10  and  20  are generally diagnosed through a close check for an abnormity or not, prior to the third liquid crystal display device  30 . 
     In view of this point, the present disclosure enables the first through third liquid crystal display devices  10 ,  20  and  30  to diagnose their states on the basis of close self-check information and transfer simplified diagnosis resultants to a main controller of the respective vehicle which corresponds to a system controller  40  of  FIG. 2 . Moreover, the first and second liquid crystal display devices  10  and  20  can more generally diagnose their states by performing a more close and various check, compared to the third liquid crystal display device  30 . In this case, the system controller  40  of the respective vehicle can grasp current states of the first through third liquid crystal display devices  10 ,  20  and  30  on the basis of the diagnosis resultants, which are transferred from the first through third liquid crystal display devices  10 ,  20  and  30 , without directly diagnosing the first through third liquid crystal display devices  10 ,  20  and  30 . As such, each of the first through third liquid crystal display devices  10 ,  20  and  30  can be connected to the system controller  40  through only one signal line. In accordance therewith, the number of signal lines can be largely reduced, and furthermore a complex wiring structure can be simplified. 
     Also, makers of the first through third liquid crystal display devices  10 ,  20  and  30  should be ordinary skilled persons in the art in accordance with the present disclosure. As such, a diagnosis circuit suitable for each of the first through third liquid crystal display devices  10 ,  20  and  30  can be laid-out by the makers of the liquid crystal display device which correspond to the ordinary skilled persons in the art of the present disclosure. Therefore, the diagnosis performances of the first through third liquid crystal display devices  10 ,  20  and  30  can be more enhanced. 
       FIG. 2  is a block diagram showing a display system of the vehicle according to an embodiment of the present disclosure. 
     The first through third liquid crystal display devices  10 ,  20  and  30  shown in  FIG. 2  can be disposed at a variety of positions within the vehicle. 
     Referring to  FIG. 2 , a display system of the vehicle can include first through third liquid crystal display devices  10 ,  20  and  30  and a system controller  40 . 
     The system controller  40  can transfer desired information and signals to the first through third liquid crystal display devices  10 ,  20  and  30 . 
     For example, the system controller  40  can apply a variety of information, which includes a current speed of the vehicle, a current fuel quantity and so on, to the first liquid crystal display device  10 . The first liquid crystal display device  10  can display the current speed of the vehicle, the current fuel quantity and so on which are received from the system controller  40 . 
     For example, the system controller  40  can transfer navigation information to the second liquid crystal display device  20 . The second liquid crystal display device  20  can display the navigation information received from the system controller  40 . 
     For example, the system controller  40  can transfer entertainment information, such as a movie, a broadcast program, a singing exercise program, a game or other, received from the third liquid crystal display device  30 . The third liquid crystal display device  30  can display the entertainment information from the system controller  40 . 
     On the other hand, each of the first through third liquid crystal display devices  10 ,  20  and  30  can self-diagnose whether or not abnormity and transfer a diagnosis resultant to the system controller  40 . The system controller  40  can perform measures opposite to the diagnosis resultants which are received from the first through third liquid crystal display devices  10 ,  20  and  30 . 
     For example, each of the first through third liquid crystal display devices  10 ,  20  and  30  can supply the system controller  40  with the diagnosis resultant corresponding to one of abnormal degrees represented in the following table 1. 
     
       
         
           
               
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                   
                 Abnormal degree 
               
            
           
           
               
               
               
               
            
               
                   
                 Lv1 
                 Lv2 
                 Lv3 
               
               
                   
               
               
                 Diagnosis resultant 
                 Normal 
                 Need of inspection 
                 Need of exchange 
               
               
                   
               
            
           
         
       
     
     The system controller  40  can receive the diagnosis resultant with a first level Lv1, which represents a normal state, from each of the first through third liquid crystal display devices  10 ,  20  and  30 . In this case, the system controller  40  can determine that any abnormity is generated in each of the first through third liquid crystal display devices  10 ,  20  and  30 . As such, the system controller  40  does not perform any measure for each of the first through third liquid crystal display devices  10 ,  20  and  30 . 
     Also, the diagnosis resultant with a second level Lv2 representing ‘need of inspection’ can be transferred from one of the first through third liquid crystal display devices  10 ,  20  and  30  to the system controller  40 . As such, the system controller  40  can not only display a massage of “Need to inspect the respective liquid crystal display device and please visit a near service center” on at least one of the other liquid crystal display devices but also output the same massage in a voice. 
     Moreover, if the diagnosis resultant with a third level Lv3 representing ‘need of exchange’ is received from one of the first through third liquid crystal display devices  10 ,  20  and  30 , the system controller  40  can perform a measure suitable for an urgent circumstance by controlling at least one of the other liquid crystal display devices. 
     For example, if any information is not displayed on the screen of the first liquid crystal display device  10 , the system controller  40  can supply the second liquid crystal display device  20  with the various information, which includes the current speed, the current fuel quantity and so on and will be applied to the first liquid crystal display device  10 . As such, the information for the first liquid crystal display device  10  can be displayed on the second liquid crystal display device. In this case, only the varied information including the current speed, the current fuel quantity and so on can be displayed on the second liquid crystal display device  20 . Alternatively, the varied information for the first liquid crystal display device  10  together with the navigation information can be simultaneously displayed on the second liquid crystal display device  20 . 
     As another example, when any information is not displayed on the screen of the second liquid crystal display device  20 , the system controller  40  can supply the first liquid crystal display device  10  with the navigation information which will be displayed on the second liquid crystal display device  20 . As such, the navigation information for the second liquid crystal display device  20  can be displayed on the first liquid crystal display device  10 . In this case, only the variety of information including the current speed, the current fuel quantity and so on can be displayed on the first liquid crystal display device  10 . Alternatively, the variety of information for the first liquid crystal display device  10  together with the navigation information can be simultaneously displayed on the first liquid crystal display device  10 . 
     The first through third liquid crystal display devices  10 ,  20  and  30  can each have a touch panel function. As such, the first liquid crystal display device  10  can perform an operation corresponding to a command which is input by the driver using the touch panel function, even though the navigation information is temporarily displayed on the first liquid crystal display device  10 . In detail, the first liquid crystal display device  10  can supply the system controller  40  with a first command input by the driver. Then, the system controller  40  can search a fixed destination corresponding to the first command and transfer the searched resultant to the first liquid crystal display device  10 . In accordance therewith, the first liquid crystal display device  10  can display the searched resultant transferred from the system controller  40 . Subsequently, the first liquid crystal display device  10  can transfer a second command, which is input by the driver, to the system controller  40 . The system controller  40  responsive to the second command can not only guide the driver&#39;s vehicle from a current position to the fixed destination, but also transfer map information, which corresponds to a path (or route) from the current position to the fixed destination, to the first liquid crystal display device. Therefore, the first liquid crystal display device  10  can display the map information received from the system controller  40 . 
     Moreover, when the diagnosis resultant with the third level Lv3 representing ‘need of exchange’ is received from one of the first through third liquid crystal display devices  10 ,  20  and  30  to the system controller  40 , the system controller  40  can not only display a massage of “Please visit a near service center as soon as possible and exchange the respective liquid crystal display device” on at least one of the other liquid crystal display devices but also output the same massage in a voice. For example, when any information is not displayed on the screen of the first liquid crystal display device  10 , the above-mentioned massage can be displayed on the second liquid crystal display device  20 . 
     In this manner, the present disclosure can enable not only each of the first through third liquid crystal display devices  10 ,  20  and  30  to transfer the simplified diagnosis resultant to the system controller  40  but also the system controller  40  to execute the measure opposite to the received diagnosis resultant. Consequently, it is not necessary for the first through third liquid crystal display devices  10 ,  20  and  30  to transfer detailed diagnosis resultants for components of the first through third liquid crystal display devices  10 ,  20  and  30 . As such, signals lines for transferring the detailed diagnosis information from the components to the system controller  40  can be removed. Therefore, the number of signal lines can be greatly reduced and furthermore the complex wiring structure can be simplified. 
     Also, makers of the first through third liquid crystal display devices  10 ,  20  and  30  should be ordinary skilled persons in the art in accordance with the present disclosure. As such, a diagnosis circuit suitable for each of the first through third liquid crystal display devices  10 ,  20  and  30  can be laid-out by the makers of the liquid crystal display device which correspond to the ordinary skilled persons in the art of the present disclosure. Therefore, the diagnosis performances of the first through third liquid crystal display devices  10 ,  20  and  30  can be more enhanced. 
     Moreover, the present disclosure can allow the first through third liquid crystal display devices  10 ,  20  and  30  to handle treatable abnormities themselves without any help of the system controller  40 . In accordance therewith, complexity caused by transferring a large number of signals can be simplified. 
       FIG. 3  is a block diagram showing one of the liquid crystal display devices shown in  FIG. 1 . 
     The liquid crystal display device shown in  FIG. 3  can become one of the first through third liquid crystal display devices  10 ,  20  and  30  shown in  FIGS. 1 and 2 . 
     For the convenience of explanation, the liquid crystal display device will now be described in a manner limited to the first liquid crystal display device  10  shown in  FIGS. 1 and 2 . However, the second and third liquid crystal display devices  20  and  30  can also have the same components and functions as that shown in  FIG. 3 . 
     Referring to  FIG. 3 , the liquid crystal display device  10  can include a printed circuit board  100 , a liquid crystal display panel  118  and a backlight unit  130 . 
     The printed circuit board  100  includes an input connector  102  configured to receive external signals and output connectors  104  and  105  configured to output signals. The input connector  102  can be disposed in an edge of the printed circuit board  100 , and the output connectors  104  and  105  can be disposed in another edge of the printed circuit board  100 . Also, the input connector  102  and the output connectors  104  and  105  can each be fabricated in a module shape and disposed on the printed circuit board  100 . However, the present disclosure is not limited to this. 
     Such output connectors  104  and  105  can include a first output connector  104  and a second output connector  105 . The first output connector  104  can be used to output signals to the liquid crystal display panel  118 . The second output connector  105  can be used to output signals to the backlight unit  130 . 
     The first output connector  104  of the printed circuit board  100  can be connected to the liquid crystal display panel  118  through a first carrier package  122 . The second output connector  105  of the printed circuit board  100  can be connected to the backlight unit  130  through a second carrier package  124 . 
     Each of the first and second carrier packages  122  and  124  can be a flexible printed circuit, but is not limited to this. 
     One edge (or end) of the first carrier package  122  can be connected to the printed circuit board  100  by being tightly inserted into the first output connector  104 . Another edge (or the other end) of the first carrier package  122  can be connected to the liquid crystal display panel  118  through a bonding process. A bonding resistance depends on a degree of the bonding combination between the first carrier package and the liquid crystal display panel  118 . For example, if the bonding combination between the first carrier package  122  and the liquid crystal display panel  118  is not superior, the bonding resistance between the first carrier package  122  and the liquid crystal display panel  118  increases. In this case, a signal being transferred from the first carrier package  122  to the liquid crystal display panel  118  is attenuated and delayed due to the increased bonding resistance. Due to this, image quality of the liquid crystal display panel  118  can deteriorate or the liquid crystal display panel  118  can malfunction. 
     Similarly, one end of the second carrier package  124  can be tightly inserted into the second output connector  105  and the other end of the second carrier package  124  can be connected to the backlight unit  130  through the bonding process. 
     The printed circuit board  100  can be loaded with circuits and IC (integrated circuit) chips which have a variety of functions. For example, the printed circuit board  100  can include an LVDS (Low Voltage Differential Signal) interface  106 , a timing controller  108 , a supply voltage generator  110 , a backlight driver  112 , a diagnosis controller  114  and so on. 
     The LVDS interface  106  can be connected to the system controller  40  through the input connector  102  and designed to receive signals of the system controller  40  in a high speed without any noise. Also, the LVDS interface  106  can transfer the received signals to the timing controller  108  without any noise. 
     The signals transferred by the LVDS interface  106  can include a clock signal, synchronous signals, a digital video data signal and so on. 
     The timing controller  108  derives timing control signals, which are used to control operation timings of data driver circuits  128  and gate driver circuits  126 , from the output signals of the LVDS interface  106 . The timing control signals includes gate timing control signals, which are used to control the operation timings of the gate driver circuits  126  and data timing control signals which are used to control the operation timings of the data driver circuits  128 . 
     Such a timing controller  108  can be connected to the data driver circuits  128  in a point-to-point mode. Also, the timing controller  108  can transfer a preamble signal, a data control signal, a clock signal, the digital video data signal and so on to the data driver circuits  128  through a single pair of data lines as an EPI (clock Embedded Point-to-point Interface) data signal. The preamble signal is used to initialize the data driver circuits  128 . 
     Such a data transmission method is based on an EPI transfer protocol. The EPI transfer protocol satisfies the following three interface regulations. 
     (1) The timing controller  108  corresponding to a sending end is connected to the data driver circuits  128 , which correspond to receiving ends, in a point-to-point mode by a single pair of lines. 
     (2) Any additional pair of clock lines is not connected between the timing controller  108  and the data driver circuits  128 . The timing controller  108  can transfer the clock signal, the data control signal and the video data signal to the data driver circuits  128 . 
     (3) Each of the data driver circuits  128  includes a built-in DLL (Delay Locked Loop) configured to recovery clock and data. As such, the timing controller  108  can supply the data driver circuit  128  with the preamble signal which is used to lock output phase and frequency of the DLL. The DLL built in the data driver circuit  128  can lock its output phase and then generate an internal clock in response to the preamble signal and the clock signal. 
     The above-mentioned EPI transfer protocol method has been disclosed in Korean Patent Application Nos. 10-2008-0127485 (Dec. 15, 2008), 10-2008-127456 (Dec. 15, 2008) and 10-2008-132466 (Dec. 23, 2008) and U.S. patent application Ser. No. 12/543,966 (Aug. 19, 2009), Ser. No. 12/461,652 (Aug. 19, 2009) and Ser. No. 12/537,341 (Aug. 7, 2009). 
     The supply voltage generator  110  can generate a plurality of driving voltages, a plurality of reference voltages and so on. For example, the plurality of driving voltages can be applied to the respective components such as the LVDS interface  106 , the timing controller  108 , the backlight driver  112  and the diagnosis controller  114 . The plurality of reference voltages can be used to generate a plurality of gamma voltages as an example, but it is not limited to this. 
     The backlight driver  112  can generate backlight driving voltages, which is used to drive the backlight unit  130 , under control of the timing controller  108 . The backlight unit  130  can include a plurality of lamps or a plurality of light emitting diodes (LEDs). The backlight unit  130  can either adjust intensity of light emitted from one of the lamp and the LED, or control the lamps or the LEDs to sequentially emit, on the basis of the backlight driving voltage applied from the backlight driver  112 . 
     The liquid crystal display panel  118  can display images. The liquid crystal display panel  118  can be connected to the printed circuit board  100  through the first carrier package  122 . 
     Also, the liquid crystal display panel  118  can include an upper substrate  115 , a lower substrate  116  and a liquid crystal layer (not shown). The liquid crystal layer is interposed between the two substrates  115  and  116 . 
     The lower substrate  116  can be defined into a plurality of pixels P by crossing a plurality of gate lines GL and a plurality of data lines DL. Each of the pixels P can include a thin film transistor, which is connected to one of the gate lines GL and one of the data lines DL, and a pixel electrode connected to the thin film transistor. The pixel electrodes formed on the respective pixels P can be separated from one another. 
     Color filters, a black matrix and so on are formed on the upper substrate  115 . The color filters are formed opposite to the pixels on the lower substrate  116  and separated from one another by the black matrix. 
     A common electrode receiving a common voltage can be formed on one of the upper substrate  115  and the lower substrate  116 . For example, if the liquid crystal display panel  118  is driven a vertical field mode such as a TN (Twisted Nematic) mode or a VA (Vertical Alignment) mode, the common electrode is formed on the upper substrate  115 . Alternatively, when the liquid crystal display panel  118  is driven in a horizontal field mode such as an IPS (In Plane Switching) mode or an FFS (Fringe Field Switching) mode, the common electrode together with the pixel electrodes can be formed on the lower substrate  116 . 
     In order to display images, the liquid crystal display panel  118  can control light transmittance of the liquid crystal layer on the basis of the data voltage applied to each of the pixels P. 
     The gate driver IC chips  126  and the data driver IC chips  128  can be disposed on the liquid crystal display panel  118 . 
     The gate driver circuits  126  can be built in the liquid crystal display panel  118  using a gate-in-panel (GIP) technology. In other words, the gate driver circuits  126  can be simultaneously formed on the liquid crystal display panel  118  when the thin film transistors are formed on the liquid crystal display panel  118  using a semiconductor procedure. 
     Each of the gate driver circuits  126  can sequentially generate gate signals using the gate timing control signals. The gate signals are applied from the gate driver circuits to the respective gate lines. 
     The data driver circuits  128  can be fabricated in integrated-circuit (IC) chips and directly disposed on the liquid crystal display panel  118  (in detail, on the lower substrate  116 ) through a bonding process. Such a bonding mode can be called a chip-on-glass (COG) mode. 
     A bonding resistance between the data driver circuit  128  and the liquid crystal display panel  118  depends on a degree of the bonding combination between the data driver circuit  128  and the liquid crystal display panel  118 . For example, if the bonding combination between the data driver circuit  128  and the liquid crystal display panel  118  is not superior, the bonding resistance between the data driver circuit  128  and the liquid crystal display panel  118  increases. In this case, a signal being transferred from the data driver circuit  128  to the liquid crystal display panel  118  is attenuated and delayed due to the increased bonding resistance. Due to this, image quality of the liquid crystal display panel  118  can deteriorate or the liquid crystal display panel  118  can malfunction. 
     The data driver circuit  128  can derive a reference clock signal from the EPI data signal which is applied from the timing controller  108 . Also, the data driver circuit  128  can generate a data control signal and a polarity control signal using the reference clock signal. Moreover, the data driver circuit  128  can convert the video data signal under control of the data control signal and the polarity control signal. The converted data voltages can be transferred from the data driver circuits  128  to the respective data lines on the liquid crystal display panel  108 . 
     Such a liquid crystal display panel  118  can allow the thin film transistor included in each of the pixels to be activated (or turned-on) in response to the gate signal on the respective gate line. Then, the data voltage on the data line can be transferred to the pixel electrode through the activated (or turned-on) thin film transistor. As such, liquid crystal molecules of the liquid crystal layer are re-aligned by an electric field which is formed by a voltage difference between the data voltage on the pixel electrode and the common voltage on the common electrode, thereby controlling light transmittance of the liquid crystal layer. In accordance therewith, an image can be displayed on the liquid crystal display panel  118 . 
     Such upper and lower substrates  115  and  116  of the liquid crystal display panel  118  can be formed from a glass material and a variety of layers can be formed on each of the upper and lower substrates  115  and  116 . The liquid crystal display device  10  including the liquid crystal display panel  118  is disposed within a vehicle. However, a variety of strong shakes must be always generated in the vehicles. For example, the variety of shakes can include a shake caused by an engine, another shake caused by inflow air from the exterior of the vehicle, still another shake caused by a collision between the respective vehicle and an adjacent vehicle thereto, and further still shake caused by the body of the respective vehicle. As such, the liquid crystal display panel  118  of the liquid crystal display device  10  can be bumped against a guide member. Due to this, at least one of the upper and lower substrates  115  and  116  of the liquid crystal display panel  118  can be broken or cracked. 
     If at least one of the upper and low substrates  115  and  116  is broken or cracked, the signal lines for transferring a variety of signals, such as the gate lines, the data lines, the common voltage line and LOG (line-on-glass) signal lines, can be disconnected or snapped. The disconnected signal lines cannot transfer the signals. As such, the liquid crystal display panel  118  is abnormally driven or malfunctions. Due to this, the liquid crystal display panel  118  must display a distorted image or cannot display any image. 
     In view of this point, it is necessary to detect whether or not the signal lines are disconnected. To this end, at least one crack detection line  120  can be disposed alone the edge (or rim) of the liquid crystal display panel  118 , that is, of at least one of the upper and lower substrates  115  and  116 . 
     In this manner, when the signals or the voltages are normally input to or output from the above-mentioned components, such as the LVDS interface  106 , the timing controller  108 , the supply voltage generator  110 , the backlight driver  112 , the gate driver circuits, the data driver circuits  128  and so on, a desired image can be displayed on the liquid crystal display panel  118 . On the contrary, if the signals or the voltages cannot be normally input to and output from some of the components, either a distorted image can be displayed or any image cannot be displayed due to the malfunction of the liquid crystal display panel  118 . 
     The liquid crystal display device  10  according to an embodiment of the present disclosure enables whether or not signals generated in the input and output terminals of the above-mentioned components are abnormal to be detected. Also, the liquid crystal display device  10  allows detection signals representing whether or not the signals generated in the input and output terminals of the components (hereinafter, “abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}”) to be transferred the diagnosis controller  114 . As such, the diagnosis controller  114  can generally diagnose the components on the basis of the abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )} and generate a diagnosis resultant {circle around ( 9 )}. Also, the diagnosis controller  114  can transfer the diagnosis resultant {circle around ( 9 )} to the system controller  40  shown in  FIG. 2 . 
     For example, the liquid crystal display device  10  of the present disclosure can generate first through third abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}. However, the liquid crystal display device  10  is not limited to this. 
     The first abnormity detection signal {circle around ( 1 )} can be a signal which is attenuated by the bonding resistance between the first carrier package  122  and the data driver circuit  128 , as an example. 
     The second abnormity detection signal {circle around ( 2 )} can be a signal representing whether or not each of the data driver circuits  128  normally recoveries the EPI data signal applied from the timing controller  108 , as an example. 
     The third abnormity detection signal {circle around ( 3 )} can be a signal representing whether or not a crack is generated in the liquid crystal display panel  118 , as an example. 
     The fourth abnormity detection signal {circle around ( 4 )} can be a signal representing current consumption of the data driver circuit  128 . In detail, the fourth abnormity detection signal {circle around ( 4 )} can have a current value corresponding to a data driving voltage which is transferred from the supply voltage generator  110  to the data driver circuit  128 . 
     The fifth abnormity detection signal {circle around ( 5 )} can be a signal representing whether or not an error is generated in the LVDS interface  108 . 
     The sixth abnormity detection signal {circle around ( 6 )} can be a signal representing whether or not an error is generated in the backlight driver  112 . 
     The seventh abnormity detection signal {circle around ( 7 )} can be a signal representing whether or not an external main supply voltage is normally applied to the supply voltage generator  110  via the input connector  102 . 
     The eighth abnormity detection signal {circle around ( 8 )} can be a signal representing whether or not a driving voltage used to drive the backlight driver  112  is normal. In other words, the eighth abnormity detection signal {circle around ( 8 )} can be a voltage which is transferred from the supply voltage generator  110  to the backlight driver  112 . 
     The system controller  40  can perform measures opposite to the diagnosis resultant {circle around ( 9 )} which is transferred from the diagnosis controller  114 . As an example of the opposite measure, the system controller  40  can supply one of different liquid crystal display devices (for example, the second and/or third liquid crystal display device(s)) with related information opposite to the diagnosis resultant {circle around ( 9 )}. Alternatively, the system controller  40  can intercept (or turn-off) power of the first liquid crystal display device  10  or control the first liquid crystal display device to be initialized. However, the system controller  40  is not limited to these. 
     Subsequently, methods of detecting principal abnormity detection signals will be described with reference to  FIGS. 4 through 6 . 
     Components not shown in  FIGS. 4 through 6  can be easily understood from those of  FIG. 3 . As such, the components not shown in  FIGS. 4 through 6  will be referred to as the same name and numeral as those shown in  FIG. 3 . 
       FIG. 4  shows a state that a first abnormity detection signal is detected in the liquid crystal display device of  FIG. 3 . 
     Referring to  FIG. 4 , the data driver circuits  128   a  and  128   b  can be connected to the printed circuit board  100  via the first carrier package  122 . 
     The data driver circuits  128   a  and  128   b  can be disposed on the liquid crystal display panel  118  (in detail, on the lower substrate  116 ) in a COG (chip-on-glass) mode. In other words, input and output pins of the data driver circuits  128   a  and  128   b  can be disposed on (or connected to) the lower substrate  116  of the liquid crystal display panel  118  through a bonding process. 
     As such, patterned signal lines  201 ,  203 ,  205 ,  207  and  209  formed on the first carrier package  122  can be connected to LOG signal lines  211 ,  213 ,  215 ,  217 ,  219 ,  221 ,  223  and  225  which are formed on the lower substrate  116  of the liquid crystal display panel  118  in an LOG (line-on-glass) mode. The input and output pins of the data driver circuits  128   a  and  128   b  can be connected to the respective LOG signal lines  211 ,  213 ,  215 ,  217 ,  219 ,  211 ,  213  and  215  through the bonding process. 
     A bonding resistance between the data driver circuit  128  and the first carrier package  122  depends on not only a degree of the bonding combination between the data driver circuits  128   a  and  128   b  and the lower substrate  116  of the liquid crystal display panel  118  but also a degree of the bonding combination between the first carrier package  122  and the lower substrate  116  of the liquid crystal display panel  118 . For example, if the bonding combination between the data driver circuits  128   a  and  128   b  and the lower substrate  116  of the liquid crystal display panel  118  and/or the bonding combination between the first carrier package  122  and the lower substrate  116  of the liquid crystal display panel  118  are not superior, a bonding resistance between the data driver circuits  128   a  and  128   b  and the lower substrate  116  of the liquid crystal display panel  118  and/or another bonding resistance between the first carrier package  122  and the lower substrate  116  of the liquid crystal display panel  118  can be increased. In this case, signals being transferred to the data lines through the input and output pins of the data driver circuits  128   a  and  128   b  or different signals being applied from the first carrier package  122  to the lower substrate  116  of the liquid crystal display panel  118  are attenuated and delayed due to the increased bonding resistances. Due to this, image quality of the liquid crystal display panel  118  can deteriorate or the liquid crystal display panel  118  can malfunction. 
     The liquid crystal display device  10  according to an embodiment of the present disclosure can include first and second data driver circuits  128   a  and  128   b , as an example. As such, in order to detect the bonding resistance, not only first through fifth patterned signal lines  201 ,  203 ,  205 ,  207  and  209  can be disposed on the first carrier package  122  but also first through eighth LOG signal lines  211 ,  213 ,  215 ,  217 ,  219 ,  211 ,  213  and  215  can be disposed on the lower substrate  116  of the liquid crystal display panel  118 . 
     In this case, the first patterned signal line  201  of the first carrier package  122  can be connected to the first LOG signal line  211  of the lower substrate  116  using the bonding process. The first LOG signal line  211  can be connected to a first input pin of the first data driver circuit  128   a  through the bonding process. The first input pin of the first data driver circuit  128   a  can be connected to a first output pin of the first data driver circuit  128   a . The first output pin of the first data driver circuit  128   a  can be connected to the second LOG signal line  213  of the lower substrate  116  through the bonding process. The second LOG signal line  213  of the lower substrate  116  can be connected to the second patterned signal line  203  of the first carrier package  122  through the bonding process. The second patterned signal line  203  of the first carrier package  122  can be connected to the third LOG signal line  215  of the lower substrate  116  through the bonding process. The third LOG signal line  215  of the lower substrate  116  can be connected to a second input pin of the first data driver circuit  128   a  through the bonding process. The second input pin of the first data driver circuit  128   a  can be connected to a second output pin of the first data driver circuit  128   a . The second output pin of the first data driver circuit  128   a  can be connected to a fourth LOG signal line  217  of the lower substrate  116  through the bonding process. The fourth LOG signal line  217  of the lower substrate  116  can be connected to the third patterned signal line  205  of the first carrier package  122  through the bonding process. 
     Continuously, the third patterned signal line  205  of the first carrier package  122  can be connected to the fifth LOG signal line  219  of the lower substrate  116  through the bonding process. The fifth LOG signal line  219  of the lower substrate  116  can be connected to a first input pin of the second data driver circuit  128   b  through the bonding process. The first input pin of the second data driver circuit  128   b  can be connected to a first output pin of the second data driver circuit  128   b . The first output pin of the second data driver circuit  128   b  can be connected to the sixth LOG signal line  221  of the lower substrate  116  through the bonding process. The sixth LOG signal line  221  of the lower substrate  116  can be connected to the fourth patterned signal line  207  of the first carrier package  122  through the bonding process. The fourth patterned signal line  207  of the first carrier package  122  can be connected to the seventh LOG signal line  223  of the lower substrate  116  through the bonding process. The seventh LOG signal line  223  of the lower substrate  116  can be connected to a second input pin of the second data driver circuit  128   b  through the bonding process. The second input pin of the second data driver circuit  128   b  can be connected to a second output pin of the second data driver circuit  128   b . The second output pin of the second data driver circuit  128   b  can be connected to the eighth LOG signal line  225  of the lower substrate  116  through the bonding process. The eighth LOG signal line  225  can be connected to the fifth patterned signal line  209  of the first carrier package  122  through the bonding process. 
     In order to inspect the bonding resistance of such a diagnosis loop, a reference voltage is applied to the first patterned signal line  201  of the first carrier package  122 . For example, the reference voltage can be about 3.3V. Such a reference voltage can be generated in one of the timing controller  108  and the supply voltage generator  110  and transferred to the first patterned signal line  201  of the first carrier package  122 . 
     The reference voltage applied to the first patterned signal line  201  of the first carrier package  122  can sequentially pass through the first LOG signal line  211  of the lower substrate  116 , the first input pin and the first output pin of the first data driver circuit  128   a , the second LOG signal line  213  of the lower substrate  116 , the second patterned signal line  203  of the first carrier package  122 , the third LOG signal line  215  of the lower substrate  116 , the second input pin and the second output pin of the first data driver circuit  128   a , the fourth LOG signal line  217  of the lower substrate  116 , the third patterned signal line  205 , the fifth LOG line  219  of the lower substrate  116 , the first input pin and the first output pin of the second data driver circuit  128   b , the sixth LOG signal line  221  of the lower substrate  116 , the fourth patterned signal line  207  of the first carrier package  122 , the seventh LOG signal line  223  of the lower substrate  116 , the second input pin and the second output pin of the second data driver circuit  128   b , the eighth LOG signal line  225  of the lower substrate  116  and the fifth patterned signal line  209  of the first carrier package  122 , and then be output as the first abnormity detection signal {circle around ( 1 )}. 
     The first abnormity detection signal {circle around ( 1 )} can be transferred to the diagnosis controller  114 . As such, the diagnosis controller  114  can detect (or determine) a defective degree of the bonding combination on the basis of the first abnormity detection signal {circle around ( 1 )} For example, although the reference voltage of 3.3V is applied to the first patterned signal line  201  of the first carrier package  122 , the first abnormity detection signal {circle around ( 1 )} of 2V can be output from the fifth patterned signal line  205  of the first carrier package  122 . In this case, it can be detected that a voltage attenuation of 1.3V is generated by the bonding resistances between the first through fifth patterned signal lines  201 ,  203 ,  205 ,  207  and  209  of the first carrier package  122 , the first through eighth signal lines  211 ,  213 ,  215 ,  217 ,  219 ,  221 ,  223  and  225  of the lower substrate  116  of the liquid crystal display panel  118 , the first and second input pins and the first and second output pins of the first data driver circuit  128   a  and the first and second input pins and the first and second output pins of the second data driver circuit  128   b.    
     In other words, the first abnormity detection signal {circle around ( 1 )} output from the fifth patterned signal line  209  of the first carrier package  122  can become a lowered voltage which is attenuated (or dropped) from the reference voltage by the following bonding resistances. As such, a defective degree of the bonding combination between the first carrier package  122  and the lower substrate  116  of the liquid crystal display panel  118  and another defective degree of the bonding combination between the lower substrate  116  of the liquid crystal display panel  118  and the data driver circuits  128   a  and  128   b  can be detected from the first abnormity detection signal {circle around ( 1 )}. 
     The bonding resistances reflected to the first abnormity detection signal {circle around ( 1 )} can include a first bonding resistance between the first patterned signal line  201  and the first LOG signal line  211  of the lower substrate  116 , a second bonding resistance between the first LOG signal line of the lower substrate  116  and the first input pin of the first data driver circuit  128   a , a third bonding resistance between the first output pin of the first data driver circuit  128   a  and the second LOG signal line  213  of the lower substrate  116 , and a fourth bonding resistance between the second LOG signal line  213  of the lower substrate  116  and the second patterned signal line  203  of the first carrier package  122 . Also, the bonding resistances can include a fifth bonding resistance between the second patterned signal line  203  of the first carrier package  122  and the third LOG signal line  215  of the lower substrate  116 , a sixth bonding resistance between the third LOG signal line  215  of the lower substrate  116  and the second input pin of the first data driver circuit  128   a , a seventh bonding resistance between the second output pin of the first data driver circuit  128   a  and the fourth LOG signal line  217  of the lower substrate  116 , and an eighth bonding resistance between the fourth LOG signal line  217  of the lower substrate  116  and the third patterned signal line  205  of the first carrier package  122 . Moreover, the bonding resistances can include a ninth bonding resistance between the third patterned signal line  205  of the first carrier package  122  and the fifth LOG signal line  219  of the lower substrate  116 , a tenth bonding resistance between the fifth LOG signal line  219  of the lower substrate  116  and the first input pin of the second data driver circuit  128   b , a eleventh bonding resistance between the first output pin of the second data driver circuit  128   b  and the sixth LOG signal line  221  of the lower substrate  116 , and a twelfth bonding resistance between the sixth LOG signal line  221  of the lower substrate  116  and the fourth patterned signal line  207  of the first carrier package  122 . Furthermore, the bonding resistances can include a thirteenth bonding resistance between the fourth patterned signal line  207  of the first carrier package  122  and the seventh LOG signal line  223  of the lower substrate  116 , a fourteenth bonding resistance between the seventh LOG signal line  223  of the lower substrate  116  and the second input pin of the second data driver circuit  128   b , a fifteenth bonding resistance between the second output pin of the second data driver circuit  128   b  and the eighth LOG signal line  225  of the lower substrate  116 , and a sixteenth bonding resistance between the eighth LOG signal line  225  of the lower substrate  116  and the fifth patterned signal line  209  of the first carrier package  128   b.    
     With the exception of the first and second data driver circuits  128   a  and  128   b , at least one additional data driver circuit can be included in the liquid crystal display panel  118 . In this case, the data driver circuits can be connected in the above-mentioned connection relationship. 
       FIG. 5  shows a state that a second abnormity detection signal is detected in the liquid crystal display device of  FIG. 3 . 
     Referring to  FIG. 5 , a lock signal together with the EPI data signals can be transferred from the timing controller  108  to the data driver circuits  128   a  and  128   b . The EPI data signals can be applied to the data driver circuits  128   a  and  128   b , respectively. The lock signal can be applied to the first data driver circuit  128   a , sequentially transferred from the first data driver circuit  128   a  to a final data driver circuit  128   b  via different data driver circuits between them, and fed-back from the final data driver circuit  128   b . A feedback signal output from the final data driver circuit  128   b  can be provided as the second abnormity detection signal {circle around ( 2 )}. The second abnormity detection signal {circle around ( 2 )} can be transferred from the final data driver circuit  128   b  to one the timing controller  108  and the diagnosis controller  114 . 
     On the basis of the second abnormity detection signal {circle around ( 2 )}, it can be detected whether or not the data driver circuits  128   a  and  128   b  are abnormal. For example, the lock signal with a high level can be transferred from the timing controller  108  to the first data driver circuit  128   a . In this case, if the second abnormity detection signal {circle around ( 2 )} of the high level is output from the final data driver circuit  128   b , it can be determined (or detected) that the data driver circuits  128   a  and  128   b  are normal. On the contrary, when the abnormity detection signal {circle around ( 2 )} with a low level is output from the final data driver circuit  128   b , it can be detected that at least one of the data driver circuits  128   a  and  128   b  is abnormal. As such, the diagnosis controller  114  can determine (or detect) whether or not the data driver circuit  128   a  and  128   b  are normal on the basis of the second abnormity detection signal {circle around ( 2 )}. 
     In order to input the lock signal and output the second abnormity detection signal {circle around ( 2 )}, the first carrier package  122 , the lower substrate  116  of the liquid crystal display panel  118  and the data driver circuits  128   a  and  128   b  can be connected to one another in the following connection relationship. 
     First through third patterned signal lines  231 ,  233  and  235  can be formed on the first carrier package  122  and first through fourth LOG signal lines  241 ,  243 ,  245  and  247  can be formed on the lower substrate  116  of the liquid crystal display panel  118 , in order to input the lock signal and output the second abnormity detection signal {circle around ( 2 )}. 
     The first through third patterned signal lines  231 ,  233  and  235  formed on the first carrier package  122  and the first through fourth LOG signal lines  241 ,  243 ,  245  and  247  formed on the lower substrate  116  can be provided separately from the first through fifth patterned signal lines  201 ,  203 ,  205 ,  207  and  209  and the first through eighth LOG signal lines  211 ,  213 ,  215 ,  217 ,  219 ,  221 ,  223  and  225  which are formed on the first carrier package  122  and the lower substrate  116  and used to obtain the first abnormity detection signal {circle around ( 1 )} representing whether or not an abnormity is generated by the bonding resistance in  FIG. 4 . 
     Such a first patterned signal line  231  of the first carrier package  122  can be connected to the first LOG signal line  241  of the lower substrate  116  of the liquid crystal display panel  118  through the bonding process. The first LOG signal line  241  of the lower substrate  116  can be connected to an input pin of the first data driver circuit  128   a  through the bonding process. The input pin of the first data driver circuit  128   a  is connected to an output pin of the first data driver circuit  128   a  via an internal circuit of the first data driver circuit  128   a . The output pin of the first data driver circuit  128   a  can be connected to the second LOG signal line  243  of the lower substrate  116  through the bonding process. The second patterned signal line  233  of the first carrier package  122  can be connected to the third LOG signal line  245  of the lower substrate  116  through the bonding process. The third LOG signal line  245  of the lower substrate  116  can be connected to an input pin of the second data driver circuit  128   b  through the bonding process. The input pin of the second data driver circuit  128   b  is connected to an output pin of the second data driver circuit  128   b  via an internal circuit of the second data driver circuit  128   b . The output pin of the second data driver circuit  128   b  can be connected to the fourth LOG signal line  247  of the lower substrate  116  through the bonding process. The fourth LOG signal line  247  of the lower substrate  116  can be connected to the third patterned signal line  235  of the first carrier package  122  through the bonding process. 
     The lock signal can be transferred from the timing controller  108  to the first patterned signal line  231  of the first carrier package  122 . The lock signal applied to the first patterned signal line  231  of the first carrier package  122  can be output (or fed-back) from the third patterned signal line  235  of the first carrier package  122  via the first LOG signal line  241  of the lower substrate  116 , the input pin, internal circuit and output pin of the first data driver circuit  128   a , the second LOG signal line  243  of the lower substrate  116 , the second patterned signal line  233  of the first carrier package  122 , the third LOG signal line  245  of the lower substrate  116 , the input pin, internal circuit and output pin of the second data driver circuit  128   b  and the fourth LOG signal line  247  of the lower substrate  116 . 
     The lock signal can be level-shifted when it passes through at least one of the first and second data driver circuits  128   a  and  128   b.    
     For example, the first data driver circuit  128   a  can be abnormal but the second data driver circuit  128   b  can be normal. In this case, the lock signal can be transitioned from the high level to the low level in the first data driver circuit  128   a  with an abnormity. As such, the lock signal with the low level can be transferred from the first data driver circuit  128   a  to the second data driver circuit  129   b  and pass through the second data driver circuit  128   b  without any level variation. Consequently, the lock signal can be output from the second data driver circuit  128   b  as the second abnormity detection signal {circle around ( 2 )}. In accordance therewith, the diagnosis controller  114  can detect (or determine) that at least one of the first and second data driver circuits  128   a  and  128   b  is abnormal, on the basis of the second abnormity detection signal {circle around ( 2 )} of the low level. 
     As another example, the first data driver circuit  128   a  is normal but the second driver circuit  128   b  is abnormal. In this case, the lock signal can pass through the first data driver circuit  128   a  without any level variation. As such, the lock signal can be transferred from the timing controller  108  to the second data driver circuit  128   b  via the first data driver circuit  128   a  as it is. However, the lock signal can be transitioned from the high level into the low level in the second data driver circuit  128   b  with an abnormity. Therefore, the lock signal with the low level can be output from the second data driver circuit as the second abnormity detection signal {circle around ( 2 )}. 
       FIG. 6  shows a state that a third abnormity detection signal is detected in the liquid crystal display device of  FIG. 3 . 
     Referring to  FIG. 6 , a crack detection line  120  can be disposed along edges of the liquid crystal display panel  118 . The crack detection line  120  can be disposed on one or both (or at least one) of the upper substrate  115  and the lower substrate  116 . 
     If the crack detection line  120  is disposed on the lower substrate  116 , the crack detection line  120  can be simultaneously formed when one of the gate line, the data line and the pixel electrode is formed. As such, the crack detection line  120  does not require any addition process. Also, the crack detection line  120  can be formed from the same material as one of the gate line, the data line and the pixel electrode, but it is not limited to this. 
     Alternatively, when the crack detection line  120  is disposed on the upper substrate  115 , the crack detection line  120  can be simultaneously formed at the formation of the common electrode without any additional process. As such, the crack detection line  120  can be formed from the same material as the common electrode, but it is not limited to this. 
     One end of the crack detection line  120  can be connected to a first patterned signal line which is formed on the first carrier package  122 . The other one of the crack detection line  120  can be connected to a second patterned signal line which is formed on the first carrier package  122 . The first and second patterned signal lines formed on the first carrier package  122  can be separately provided from the first through fifth patterned signal lines (shown in  FIG. 4 ) which are formed on the first carrier package  122  and used to detect the bonding resistance, and the first through third patterned signal lines (shown in  FIG. 5 ) which are formed on the first carrier package  122  and used to check the lock signal. 
     As described above, the upper and lower substrates  115  and  116  of the liquid crystal display panel  118  are each formed from a glass material and loaded with a variety of layers. As such, the upper substrate  115  and/or the lower substrate  116  included in the liquid crystal display panel  118  can be easily broken or cracked due to the shakes of the vehicle. If at least one of the upper and low substrates  115  and  116  of the liquid crystal display panel  118  is broken or cracked, the signal lines for transferring a variety of signals, such as the gate lines, the data lines, the common voltage line and LOG (line-on-glass) signal lines, for transferring a variety of signals can be disconnected or snapped. The disconnected signal lines cannot transfer the signals. As such, the liquid crystal display panel  118  is abnormally driven or malfunctions. Due to this, the liquid crystal display panel  118  must display a distorted image or cannot display any image. 
     To address this matter, the liquid crystal display device  10  of the present disclosure can include the crack detection line  120  which is used to detect whether or not the signal lines are disconnected or snapped. 
     In order to detect the disconnection of the signal lines, a reference voltage can be generated in one of the timing controller  108  and the supply voltage generator  110  and transferred to the first patterned signal line of the first carrier package  122 . The reference voltage can be output from the second pattern signal line of the first carrier package  122  via the crack detection line  120 , which is disposed on the liquid crystal display panel  118 , as a third abnormity detection signal {circle around ( 3 )}. The third abnormity detection signal {circle around ( 3 )} can be transferred to the diagnosis controller  114 . Then, the diagnosis controller  114  can detect whether or not a crack is generated in the liquid crystal display panel  118 , on the third abnormity detection signal {circle around ( 3 )}. 
     For example, the signal lines and the crack detection line  120  are disconnected or snapped by a crack which is generated in the liquid crystal display panel  118 . In this case, any signal is not output from the second patterned signal line of the first carrier package  122 . In other words, the third abnormity detection signal {circle around ( 3 )} of a floating state is developed on the second patterned signal line of the first carrier package  122 . 
     As another example, the liquid crystal display panel  118  is not cracked and the crack detection line  120  is not disconnected. As such, the third abnormity detection signal {circle around ( 3 )} with the same level as or a similar level to the reference voltage applied to the first patterned signal line of the first carrier package  122  can be output from the second patterned signal line of the first carrier package  122 . 
     To return  FIG. 3 , the fourth abnormity detection signal {circle around ( 4 )} represents a state of a data driving voltage which is transferred from the supply voltage generator  110  to the data driver circuits  128 . The fourth abnormity detection signal {circle around ( 4 )} can be obtained by detecting the data driving voltage and converting the detected data driving voltage. In other words, a current consumption quantity of the data driver circuits  128  can be detected by the fourth abnormity detection signal {circle around ( 4 )}. Such a fourth abnormity detection signal {circle around ( 4 )} can be transferred to the diagnosis controller  114 . 
     The fifth abnormity detection signal {circle around ( 5 )} can be generated in an error detector built-in the LVDS interface  106  as shown in  FIG. 3 . The error detector of the LVDS interface  105  can detect whether or not an error is generated in the signals applied from the system controller  40 . The fifth abnormity detection signal {circle around ( 5 )} reflecting whether or not an error can be transferred from the error generator of the LVDS interface  105  to the diagnosis controller  114 . 
     The sixth abnormity detection signal {circle around ( 6 )} can be generated in an error detector built-in the backlight driver  112 , as shown in  FIG. 3 . The backlight driver  112  can derive the backlight driving voltage, which is necessary to drive the backlight unit  130 , from the supply voltage applied from the supply voltage generator  110 . The error detector of the backlight driver  112  can generates the sixth abnormity detection signal {circle around ( 6 )} representing whether or not an error is generated in a process of deriving the data driving voltage from the supply voltage. The sixth abnormity detection signal {circle around ( 6 )} can be transferred from the error detector of the backlight driver  112  to the diagnosis controller  114 . 
     The seventh abnormity detection signal {circle around ( 7 )} can be derived from the external main supply voltage which is transferred to the supply voltage generator  110  through the input connector  102 , as shown in  FIG. 3 . The main supply voltage can be abnormally input from the exterior or varied by the input connector  102 . As such, whether or not the main supply voltage transferred from the input connector  102  to the supply voltage generator  110  is normal can be detected by the seventh abnormity detection signal {circle around ( 7 )}. The seventh abnormity detection signal {circle around ( 7 )} can be transferred to the diagnosis controller  114 . 
     The eighth abnormity detection signal {circle around ( 8 )} can be derived from a supply voltage which is used to drive the backlight driver  112 . The supply voltage used to generate the backlight driving voltage can be transferred from the supply voltage generator  110  to the backlight driver  113 . If an abnormity is generated in the signal line between the supply voltage generator  110  and the backlight driver  112 , the supply voltage generated in the supply voltage generator  110  cannot be normally transferred to the backlight driver  112 . As such, whether or not the supply voltage transferred from the supply voltage generator  110  to the backlight driver  112  is normal can be detected by the eighth abnormity detection signal {circle around ( 8 )}. The eighth abnormity detection signal {circle around ( 8 )} can be transferred to the diagnosis controller  114 . 
     Although they are not shown in the drawings, the other abnormity detection signals representing whether or not the timing controller  108  and the gate driver circuit  126  are normal can also be transferred to the diagnosis controller  114  and used to generate the diagnosed resultant of the diagnosis controller  114 . 
       FIG. 7  is a circuit diagram showing an example of the diagnosis controller included in the liquid crystal display device of  FIG. 3 . 
     Referring to  FIG. 7 , the diagnosis controller  114  according an example can input first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}. Also, the diagnosis controller  114  can generally diagnose the respective liquid crystal display device  10  by closely checking the first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}. Moreover, the diagnosis controller  114  can transfer the diagnosed resultant {circle around ( 9 )} to the system controller  40  (shown in  FIG. 2 ). 
     Such a diagnosis controller  114  can include first through eighth input pins and a single output pin. The first through eighth input pins are used to receive the first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}. The output pin is used to transfer the diagnosed resultant {circle around ( 9 )}. 
     The first, fourth, seventh and eighth abnormity detection signals {circle around ( 1 )}, {circle around ( 4 )}, {circle around ( 7 )} and {circle around ( 8 )} are analog signals. In order to process the first, fourth, seventh and eighth abnormity detection signals {circle around ( 1 )}, {circle around ( 4 )}, {circle around ( 7 )} and {circle around ( 8 )}, the diagnosis controller  114  includes analog-to-digital converter (not shown) configured to convert an analog signal into a digital signal. The analog-to-digital converter can be connected to the first, fourth, seventh and eighth input pins which are used to receive the first, fourth, seventh and eighth abnormity detection signals {circle around ( 1 )}, {circle around ( 4 )}, {circle around ( 7 )} and {circle around ( 8 )}. 
     On the other hand, the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} are digital signals. As such, the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} do not require the analog-to-digital converter. 
     Meanwhile, the third abnormity detection signal {circle around ( 3 )} can be generated in a floating state in which any signal information is not represented. As such, the diagnosis controller  114  can further include an additional circuit, such as a voltage divider shown in  FIG. 8 . The additional circuit can converts the third abnormity detection signal {circle around ( 3 )} into a digital signal (or a logic signal). To this end, the additional circuit can be built in the diagnosis controller  114  in such a manner as to be connected to the third input pin. This additional circuit will be described later. 
     The diagnosed resultant {circle around ( 9 )} can be defined into the table 1 as described above. The diagnosed resultant {circle around ( 9 )} of a first level Lv1 represents “normal”. The diagnosed resultant {circle around ( 9 )} of a second level Lv2 represents “need of inspection”. The diagnosed resultant {circle around ( 9 )} of a third level Lv3 represents “need of exchange”. 
     Such a diagnosed resultant can be transferred from the diagnosis controller  114  to the system controller  40  using one of a PWM (pulse width modulation) method and an I2C communication method. However, the present disclosure is not limited to this. The PWM modulation can be performed by adjusting a duty ratio. 
       FIG. 8  is a circuit diagram showing a state that a third abnormity detection signal is input to the diagnosis controller in  FIG. 3 . 
     As shown in  FIG. 8 , the third abnormity detection signal {circle around ( 3 )} can be input to an additional circuit built in the diagnosis controller  114 . The additional circuit built-in the diagnosis controller  114  can include first and second resistors R 1  and R 2  serially disposed between a ground line and the third input pin of the diagnosis controller  114  receiving the third abnormity detection signal {circle around ( 3 )}. As such, the third abnormity detection signal {circle around ( 3 )} can be output through a node between the first and second resistors R 1  and R 2 . 
     The third abnormity detection signal {circle around ( 3 )} represents whether or not a crack is generated in the liquid crystal display panel  118 . 
     For example, the crack detection line  120  are disconnected or snapped by a crack which is generated in the liquid crystal display panel  118 . In this case, the third abnormity detection signal {circle around ( 3 )} with a floating state (i.e., a high impedance state) is generated. In other words, any signal is not input to the third input pin of the diagnosis controller  114 . As such, any voltage cannot be output through the node between the first and second resistors R 1  and R 2 . However, the diagnosis controller  114  can obtain the third abnormity detection signal {circle around ( 3 )} with the low level because the second resistor R 1  is connected to the ground line. 
     As another example, the liquid crystal display panel  118  is not cracked and the crack detection line  120  is not disconnected. In this case, the third abnormity detection signal {circle around ( 3 )} with a fixed voltage (i.e., the reference voltage) can be generated and transferred to the third input pin of the diagnosis controller  114 . Also, the third abnormity detection signal {circle around ( 3 )} is voltage-divided by the first and second resistors R 1  and R 2  and output through the node between the first and second resistors R 1  and R 2 . As such, the diagnosis controller  114  can obtain the third abnormity detection signal {circle around ( 3 )} with the high level. 
       FIG. 9  is a circuit diagram showing another example of the diagnosis controller included in the liquid crystal display device of  FIG. 3 . 
     Referring to  FIG. 9 , the diagnosis controller  114  can be connected a logic gate  140 . The logic gate  140  can be an AND gate. 
     The first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )} can be input to the diagnosis controller  114 , but some of the first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}, such as the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )}, can be input to first through third input electrodes of the AND gate  140  without being directly input the diagnosis controller  114 . 
     The AND gate  140  can logically AND-operate the second, third and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} and output an AND-operated output signal to the diagnosis controller  114 . For example, if all the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} have the high level, the AND gate  140  can output an composite abnormity detection signal with the high level. As another example, when at least one of the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} has the low level, the AND gate  140  can output the composite abnormity detection signal with the low level. The composite abnormity detection signal with the low level can represent that at least one of the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} is abnormal. 
     In this manner, the three abnormity detection signals, i.e. the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )}, can be pre-processed by the AND gate  140  and transferred to the diagnosis controller  114  as a single composite abnormity detection signal. As such, the input pins of the diagnosis controller  114  can be reduced in number. 
     In detail, the first example of the diagnosis controller  114  (shown in  FIG. 7 ) requires eight input pins in order to input the first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}. On the other hand, the second example of the diagnosis controller  114  uses only five input pins in order to input the first through eighth abnormity detection signals {circle around ( 1 )} through {circle around ( 8 )}. As such, the number of input pins of the diagnosis controller  114  can be decreased and furthermore the size of an IC chip corresponding to the diagnosis controller  114  can be reduced. 
     Consequently, the diagnosis controller  114  can directly input the first, third, fourth, seventh and eighth abnormity detection signals {circle around ( 1 )}, {circle around ( 3 )}, {circle around ( 4 )}, {circle around ( 7 )} and {circle around ( 8 )} and receive the single composite abnormity detection signal which is obtained by AND-operating the second, fifth and sixth abnormity detection signals {circle around ( 2 )}, {circle around ( 5 )} and {circle around ( 6 )} using the AND gate  140 . Also, the diagnosis controller  114  can generally diagnose the respective liquid crystal display device  10  on the basis of the first, third, fourth, seventh and eighth abnormity detection signals {circle around ( 1 )}, {circle around ( 3 )}, {circle around ( 4 )}, {circle around ( 7 )} and {circle around ( 8 )} and the composite abnormity detection signal. Moreover, the diagnosis controller  114  can generate the diagnosed resultant {circle around ( 9 )} and transfer the diagnosed resultant {circle around ( 9 )} to the system controller  40 . 
     Although the present disclosure has been limitedly explained regarding only the embodiments described above, it should be considered as examples without being limitedly interpreted to the embodiments. As such, the scope of the present disclosure shall be determined only by reasonably interpreting the appended claims and include various changes or modifications of the appended claims within the equivalent scope of the present disclosure.