Patent Publication Number: US-7589702-B2

Title: Liquid crystal display device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This is a Divisional Application of the co-pending U.S. patent application Ser. No. 09/621,825 filed Jul. 21, 2000, which claims priority to and the benefit of Korean Patent Application No. 99-29529 filed on Jul. 21, 1999, Korean Patent Application No. 99-30549 filed on Jul. 27, 1999, Korean Patent Application No. 00-31337 filed on Jul. 8, 2000, which are all hereby incorporated by reference for all purposes as if fully set forth herein. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a liquid crystal display (hereinafter referred to as “LCD”), and more particularly to a LCD capable of performing an information processing function with minimized dimension. 
     2. Description of the Related Art 
     Recently, the advancement in the information industry has remarkably developed information processing apparatuses, such as computers. Also, the technical progress in the information processing apparatuses in turn brings about the development of monitor units that externally displays the information supplied from the information processing apparatuses. 
     Largely, the monitor units are classified into “CRT-type monitor units” using the characteristics of cathode ray tubes and “LCD unit-type monitor units” applied with the physical and optical characteristics of liquid crystals. The LCD unit-type monitor units, because of the advantages such as the minimization, light-weight and low power dissipation, compared to the “CRT-type monitor units,” are being widely available in the display apparatus of a portable computer, a monitor of a desk-top computer and a monitor of an image apparatus of high picture quality. 
     The specific examples of the foregoing LCD unit-type monitor units are disclosed in U.S. Pat. No. 5,502,582 issued to Larson et al. entitled by “Light Source Cooler for LCD Monitor”, U.S. Pat. No. 5,791,770 issued to Hoyt et al. in the same title, and U.S. Pat. No. 5,825,614 issued to Kim entitled by “Compact Personal Computer with LCD monitor.” 
     Considering the above patents, the notebook computer, a kind of portable computer, has a main body for storing and processing information provided by an input unit such as a keyboard; and a monitor unit capable of swinging about the main body for displaying the information supplied from the main body thereon. 
     In a notebook computer, the monitor unit includes an LCD and a case. The LCD has a LCD panel assembly, a backlight assembly, a mold frame and a chassis. The LCD panel assembly has a liquid crystal panel, a signal transmission film, a source printed circuit board (hereafter, referred to as “PCB”), a gate PCB and a control board. 
     Here, the source PCB, gate PCB and control board are mounted to be separated from one another, and electrically connected by means of a flexible PCB for securing the signal transmission path from one another. 
     The control board generates a color signal, a clock signal and a power source signal in accordance with image signals. The source PCB carries out an operation for displaying the images in response to the signals supplied from the control board. 
     At this time, the source PCB is mounted with various portions such as a data latch section, a timing generating section, a voltage generating section, and so on to generate signals such as a driving signal and a control signal. The gate PCB is mounted with a gate voltage supplying section for generating a predetermined gate voltage in response to the control signal from the source PCB. 
     The aforementioned source PCB and gate PCB are mounted to the LCD in a PCB-bending manner, and bent from the side plane toward the rear plane of the LCD to be connected to the control board. Therefore, the LCD becomes as thick as the thickness of the components mounted to the source PCB. 
     On the other hand, the signals provided from the aforementioned information processing apparatus are of analog signals, but the LCD unit-type monitor unit is generally driven by digital signals. Accordingly, the monitor unit has an analog-digital convert circuit board for converting the analog signals supplied from the information processing apparatus into the digital signals. 
     The analog-digital convert circuit board is electrically connected to the control PCB by means of a connecting cable, and the control PCB is electrically connected to the source PCB by means of a flexible printed circuit board. 
     Once a lot of electric signals are transmitted via the flexible printed circuit board and connecting cable in a high speed, plenty of electromagnetic waves are generated from the members which electrically connect respective printed circuit boards. Thus, the electromagnetic wave serves as an inferior factor that greatly degrades the quality of the monitor unit. 
     Moreover, the flexible PCB and connecting cable are too expensive to satisfy the economic concern of heightening the cost of the product as well as the foregoing problem of electromagnetic wave. 
     Also, products provided by integrally coupling the main body of the computer system and the monitor unit is currently in great demand. However, these are just limited to the computer system applied with the CRT-type monitor unit while products provided by coupling the main body of the computer system to the LCD unit-type monitor unit have yet to be available. 
     SUMMARY OF THE INVENTION 
     Therefore, it is one object of the present invention to provide a LCD capable of minimizing the dimension of the LCD. 
     It is another object of the present invention to provide an information processing apparatus having a minimized LCD. 
     It is still another object of the present invention to provide a LCD having an information processing function. 
     To achieve the aforementioned object of the present invention, a liquid crystal display according to the embodiment of the present invention includes a backlight assembly having a light source portion for generating light, and a liquid crystal display panel for receiving the light from the backlight assembly to display images. Also, a mold frame for sequentially accepting the backlight assembly and liquid crystal display panel is formed to be gradually thinner as further advancing from the first side of receiving, to place the light source portion toward the second side opposition to the first side. In addition to these, a chassis coupled to be opposite to the mold frame for closely fixing the backlight assembly and liquid crystal display panel to the mold frame is formed to be gradually thinner as further advancing from the first side of receiving, to place the light source portion toward the second side opposition to the first side. 
     To achieve the above object of the present invention, an information processing apparatus according to the embodiment of the present invention includes a liquid crystal display panel assembly having a liquid crystal display panel and a source printed circuit board formed with a wiring pattern for signal transmission. Further to the liquid crystal display panel assembly, a backlight assembly supplies light to the display unit, a mold frame accepts the backlight assembly and display unit, and a chassis is coupled to oppose to the mold frame for closely fixing the backlight assembly and display unit. By this construction, the source printed circuit board receives a liquid crystal display panel driving signal supplied from the outside of the mold frame and chassis for driving the liquid crystal display panel to transmit the liquid crystal display panel driving signal to the liquid crystal display panel. 
     To achieve the above object of the present invention, a liquid crystal display according to the embodiment of the present invention is formed by a liquid crystal display module which includes a backlight assembly having a light source portion for generating light, and a liquid crystal display panel having a source printed circuit board for transmitting signals to receive the light from the backlight assembly to display images. Also included as parts of the liquid crystal display module are a mold frame for sequentially accepting the backlight assembly and liquid crystal display panel, which is formed to be gradually thinner as further advancing from the first side of receiving, to place the light source portion toward the second side in opposition to the first side, and a chassis coupled to oppose to the mold frame for closely fixing the backlight assembly and liquid crystal display panel to the mold frame, which is formed to be gradually thinner as further advancing from the first side of receiving, to place the light source portion toward the second side in opposition to the first side. In addition to the liquid crystal display module, there is provided an information processing module which has a liquid crystal display panel driving circuit for generating a driving signal for driving the liquid crystal display panel, and supplying the driving signal to the liquid crystal display panel via the source printed circuit board. 
     Preferably, the information processing apparatus further includes a flexible printed circuit board to electrically connect the liquid crystal display panel driving circuit and source printed circuit board. The flexible printed circuit board and the source printed circuit board are electrically coupled by means of either one of an anisotropic conductive film and a solder. 
     Furthermore, the information processing module is closely coupled to the rear plane of the mold frame, and the liquid crystal display module and information processing module are fixedly placed between a front case and a rear case closely coupled by being opposite to each other. 
     In addition, the information processing module further includes signal converting means electrically, which is coupled to the liquid crystal display panel driving circuit, for converting an analog video signal supplied from the outside of the liquid crystal display, into a digital video signal in order to supply the converted signal to the liquid crystal display panel driving circuit. Also, the liquid crystal display module further has a reinforcing bracket closely coupled to the rear plane of the mold frame. 
     Moreover, the liquid crystal display module is coupled to the information processing module by means of hinges and latches, the portion of placing the light source portion in the liquid crystal display module is coupled to the information processing module by means of the hinges, and an end of the portion thins as distance furthers from the light source portion is coupled to the information processing module by means of the latches. 
     According to the above LCD and information processing apparatus, the liquid crystal panel driving circuit which generates the driving signal for driving the liquid crystal panel, is mounted to the main body of the computer system. Accordingly, the chassis, mold frame, front and rear cases are fabricated in the form of corresponding to the light-conducting plate of the backlight assembly. By assembling the chassis, mold frame, and front and rear cases, the side plane of the LCD becomes gradually thinner as being further distanced from the position of accepting the light source portion, thereby being capable of making the LCD thinner. 
     In the meantime, the information processing module mounted to the main body may be accommodated between the mold frame and rear case. Once the information module is accommodated within the LCD in this manner, the advantage is that the space occupied by the main body of the computer system can be utilized for other uses when the main body of the computer system and monitor unit are separately constructed. If the information processing module is included within the internal space of the LCD, the information processing module, the liquid crystal panel driving circuit and source PCB are directly connected by means of an anisotropic conductive film, solder or the like. Consequently, the electromagnetic wave generated due to using the separate connecting member such as the flexible PCB can be minimized. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above objects and other advantages of the present invention will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which: 
         FIG. 1  is a perspective view showing a computer system having an LCD according to one preferred embodiment of the present invention; 
         FIG. 2  is an exploded perspective view showing a construction of the LCD shown in  FIG. 1 ; 
         FIG. 3  is a block diagram showing the circuit diagram of the computer system shown in  FIG. 1 ; 
         FIG. 4  is a perspective view showing the configuration of the flexible PCB shown in  FIG. 1 ; 
         FIGS. 5 and 6  are views for showing the coupling state of the main body of the computer system and monitor system shown in  FIG. 1 ; 
         FIG. 7  is a perspective view showing the LCD having the information processing function according to one preferred embodiment of the present invention; 
         FIG. 8  is an exploded perspective view showing an internal construction of the LCD having the information processing function shown in  FIG. 7 ; 
         FIG. 9  is a perspective view showing the coupling relation of the information processing module and liquid crystal display module shown in  FIG. 7 ; 
         FIGS. 10 and 11  are block diagrams showing the circuit construction of the LCD with the information of the processing function as shown in  FIG. 7 ; 
         FIG. 12  is a perspective view showing the LCD having the information processing function according to a preferred embodiment of the present invention; 
         FIG. 13  is a perspective view showing an internal construction of the LCD with the information of the processing function as shown in  FIG. 12 ; 
         FIG. 14  is an exploded perspective view showing the coupling construction of the liquid crystal panel driving circuit and source PCB shown in  FIG. 13 ; and 
         FIGS. 15 and 16  are views showing the coupling construction of the information processing module and liquid crystal display module shown in  FIG. 13 , respectively. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIG. 1  is a perspective view showing a computer system with an LCD according to one preferred embodiment of the present invention. 
     Referring to  FIG. 1 , a main body  100  of a portable computer system is coupled to a monitor unit  110  by means of a swing member (not shown). 
     Monitor unit  110  has an LCD  300  driven by signals from main body  100  and a case  200  for accepting to protect LCD  300 . Case  200  includes a front case  210  having a bottom plane opened to correspond to a portion of displaying a picture of LCD  300  and a rear case  220  coupled for accommodating LCD  300  to be coupled to front case  210  in opposition thereto. 
     LCD  300  is furnished between front case  210  and rear case  220 , and main body  100  and LCD  300  are electrically coupled by a flexible PCB  120  to mutually supply signals. 
       FIG. 2  is an exploded perspective view showing a construction of the LCD shown in  FIG. 1 . 
     Referring to  FIG. 2 , LCD  300  has a mold frame  310  formed with receiving space. A backlight assembly  330  is placed within the receiving space of mold frame  310 , and generates to guide light. A liquid crystal display panel assembly  350  provided to the upper portion of backlight assembly  330  receives the light and displays the picture. A chassis  370  is coupled to be opposite to mold frame  310 , and closely fixes backlight assembly  330  and liquid crystal display panel assembly  350  into the receiving space of mold frame  310 . 
     Backlight assembly  330  has a light source portion  332  for generating the light and a light-conducting plate  331  having one side section closely coupled to light source portion  332 . Light-conducting plate  331  becomes gradually thinner as it is being further distanced from light source portion  332 . A reflecting plate  333  for reflecting the light is installed to the lower side of light-conducting plate  331  and optical sheets  334  for diverging and focusing the light are installed to the upper side of light-conducting plate  331 . 
     At this time, light-conducting plate  331  is formed in the following manner that a first side of placing light source portion  332  and a second side facing the first side differ in thickness, i.e., different heights. In other words, the thickness of light-conducting plate  331  is formed to be thinner as it is being distanced from the first side where light source portion  332  is placed. Accordingly, even though reflecting plate  333  and optical sheets  334  are installed to be closely attached to the upper and lower portions of light-conducting plate  331 , the height of the first side which places light source portion  332  of backlight assembly  330  therein is different from that of the second side opposite to the first side. 
     Meanwhile, liquid crystal display panel assembly  350  includes a liquid crystal panel  355 , a liquid crystal (not shown), a signal transmission film  360  and a source PCB  365 . 
     Liquid crystal panel  355  has a TFT substrate  351  formed with a gate line (not shown), a data line (not shown), a thin film transistor and a pixel electrode, and a color filter substrate  352  installed over TFT substrate  351 . 
     Signal transmission film  360  has a gate signal transmission film  361  connected to respective gate lines of TFT substrate  351  and a data signal transmission film  363  connected to the respective data lines. Gate and data signal transmission films  361  and  363  are respectively mounted with a gate driving drive IC  362  and a data driving drive IC  364  for supplying a gate driving signal and a data driving signal to the gate line and data line of TFT substrate  351 . 
     On the other hand, source PCB  365  is formed with a wiring pattern for signal transmission that supplies the gate and data driving signals respectively to gate signal transmission film  361  and data signal transmission film  363 . The gate and data driving signals are supplied from main body  100  of the computer system having the information processing function as shown in  FIG. 1 . That is, liquid crystal panel driving circuit  153  for generating the gate and data driving signals for driving liquid crystal panel  355  is internally furnished to main body  100 . 
     Backlight assembly  330  and liquid crystal display panel assembly  350  are sequentially accepted within the receiving space of mold frame  310 , and are closely coupled to mold frame  310  by means of chassis  370  coupled by being opposite to mold frame  310 . 
     At this time, mold frame  310  and chassis  370  are formed so that the depth of the receiving space becomes as shallow as light source portion  332  of backlight assembly  330  is further distanced from the position of receiving light source portion  332 . This is because, generally, the thickness of the side plane when coupling backlight assembly  330  with liquid crystal display panel assembly  350  is different from that of the second side plane while liquid crystal panel driving circuit  153  installed to be bent toward the rear plane of liquid crystal display panel assembly  350  by being electrically coupled to source PCB  365  is moved to main body  100 . 
     As described above, by forming the receiving space of mold frame  310  and chassis  370  in the same depth regardless of the different thickness of the first side of placing light source portion  332  from that of the second side when coupling backlight assembly  330  and liquid crystal display panel assembly  350 , an empty space exists between backlight assembly  330  and liquid crystal display panel assembly  350 . Due to this fact, backlight assembly  330  and liquid crystal display panel assembly  350  cannot be firmly accepted within the interior of mold frame  310  and chassis  370 . Therefore, mold frame  310  and chassis  370  are formed in a wedge shape by which the receiving space becomes gradually shallow as being further distanced from the position of receiving light source portion  332 . 
     When mold frame  310  and chassis  370  furnished in the wedge shape are coupled to oppose to each other, both lengthwise side planes of light source portion  332  have different thickness on the first side of placing light source portion  332  from that the second side of opposing to the first side. Also, as shown in  FIG. 1 , front case  210  and rear case  220  are formed in the wedge shape corresponding to mold frame  310  and chassis  370 . Consequently, the thickness of LCD  110  is reduced as much as the space being occupied by liquid crystal panel driving circuit  153 . 
     Meanwhile, the construction of main body  100  for accommodating liquid crystal panel driving circuit  153  is as shown in  FIG. 3 . 
     Referring to  FIG. 3 , main body  100  has a control board  150 . Control board  150  is formed by a graphic controller  151  for generating control signals such as a color signal R-G-B, a clock signal CLK and a synchronizing signal SYNC, and a power supplying section  152  for receiving an external power source to generate a driving power source signal. Included as a part of control board  150  is a liquid crystal panel driving circuit  153  for generating the driving signal for liquid crystal panel in response to the control signals and driving power source signal. Here, liquid crystal panel driving circuit  153  mounted to control board  150  and source PCB  356  included into LCD  300  are electrically connected by flexible PCB  120  as shown in  FIG. 1 . 
     More specifically, liquid crystal panel driving circuit  153  includes a data latch section  154  for latching to delay color signal R-G-B for a predetermined time interval and supplying the delayed signal, and a timing generator  155  for generating the control signals required for the driving of liquid crystal panel  355  in response to clock signal CLK and sync signal SYNC supplied via data latch section  154 . Besides, a voltage generator  156  is provided for generating a gradation voltage required for liquid crystal panel  355  and a gate on/off voltage in response to the driving power source signal. 
     In addition, the aforementioned signals from liquid crystal panel driving circuit  153  are supplied to liquid crystal panel  355  via flexible PCB  120  and source PCB  365 . 
     Referring to  FIG. 4 , flexible PCB  120  includes a first flexible PCB  121  extending from liquid crystal panel driving circuit  153  and a second flexible PCB  122  extending from source PCB  365 . Also, first and second connectors  123  and  124  are respectively installed to the ends extending from first and second flexible PCBs  121  and  122 . A signal transmission path between liquid crystal panel driving circuit  153  and source PCB  365  is secured by connecting first connector  123  and second connector  124 . 
     Here, first connector  123  and second connector  124  can be connected at either the rear plane of backlight assembly  330  and the internal space of main body  100 . First flexible PCB  121  and liquid crystal panel driving circuit  153 , and second flexible PCB  122  and source PCB  365  are electrically connected by an anisotropic conductive film or solder, in which detailed description on the connecting method will be described later. 
       FIGS. 5 and 6  are views showing the method of coupling main body  100  with monitor unit  110 . 
     Referring to  FIG. 5 , main body  100  and monitor unit  110  are coupled by means of hinges  112  and  114  and latches  212  and  116 . Hinges  112  and  114  are installed to portions of placing light source portion  332  of monitor unit  110 , i.e., at the thicker side of monitor unit  110 , to be coupled to main body  100 . 
     As shown in  FIG. 6 , hinges  112  and  114  are provided so that a pair of connecting wings  112   b  &amp;  112   c  and  114   b  &amp;  114   c  are respectively coupled to shafts  112   a  and  114   a  in the diagonal direction. Monitor unit  110  is fixedly coupled to main body  100  by means of hinges  112  and  114  and swings by centering about shafts  112   a  and  114   a.    
     Additionally, the thinner side portion of monitor unit  110 , i.e., the portion opposite to the position of installing with light source portion  332 , is detached/attached from/onto main body  100  by means of latches  212  and  116 . 
     Meantime, main body  100  and monitor unit  110  may be formed in a body by accepting main body  100  to the interior of monitor unit  110 , of which one example is illustrated in  FIG. 7 . 
       FIG. 7  is a perspective view showing the LCD having an information processing function according to one preferred embodiment of the present invention. 
     Referring to  FIG. 7 , the computer system basically has an input unit such as a keyboard  400  and mouse  401 , and a monitor unit  500  capable of performing the information processing function having been performed in main body  100  shown in  FIG. 1 . 
     Now, the LCD having the information processing function shown in  FIG. 7  will be described in detail with reference to  FIGS. 7 to 11 . 
       FIG. 8  is an exploded perspective view showing an internal construction of the LCD having the information processing function shown in  FIG. 7 , and  FIG. 9  is a view showing a state of closely attaching an information processing module shown in  FIG. 8  to the rear plane of the liquid crystal display module.  FIGS. 10 and 11  are block diagrams showing the circuit construction of the LCD having the information processing function shown in  FIG. 8  in detail. 
     Referring to  FIG. 8 , monitor unit  500  includes a front case  510 , a rear case  520  coupled to oppose front case  510 , having a receiving space of a predetermined depth, and LCD  500  accommodated between front case  510  and rear case  520  for displaying images. 
     Front case  510  has a rectangular frame form, and is formed on a stand plate  512  by interposing a hinge  511 . Rear case  520  is formed of a substance such as a metal or a metal alloy for blocking electromagnetic wave generated from circuits of LCD  500 . 
     LCD  500  is formed by a liquid crystal display module  530  and an information processing module  540 , electrically coupled to liquid crystal display module  530  and accepted into the rear side of liquid crystal display module  530 , i.e., between liquid crystal display module  530  and rear case  520 . 
     Liquid crystal display module  530  has a liquid crystal display panel  531 , gate and data signal transmission films  534  and  535 , a source PCB  536  and a liquid crystal display panel driving circuit  537 . 
     Specifically, liquid crystal display panel  531  includes a TFT substrate  532  formed by a thin film transistor, a pixel electrode, a gate line and a data line. A color filter substrate  533  consisting of a common electrode and R-G-B pixels facing with the pixel electrode of TFT substrate  532  is formed over TFT substrate  532 . In spite of not being shown in the drawing, a liquid crystal for varying the permeability of light by the change in the arrangement by means of an electric field forms a layer between TFT substrate  532  and color filter substrate  533 . 
     The gate and data lines of TFT substrate  532  are respectively connected with output terminals of gate signal transmission film  534  and data signal transmission film  535  via an anisotropic conductive film. Also, an input terminal of data signal transmission film  535  is connected with one end portion of source PCB  536  formed with a wiring pattern for signal transmission. 
     The other end portion of source PCB  536  is electrically connected with liquid crystal panel driving circuit  537  for performing the function described with reference to  FIG. 3 , and liquid crystal panel driving circuit  537  is electrically connected with information processing module  540 . Liquid crystal panel driving circuit  537  processes a driving signal and a timing signal to be received via gate and data signal transmission films  534  and  535  in response to an image signal supplied from an information processing module  540 . At this time, the data driving signal supplied to the data line among the driving signals having been processed by liquid crystal panel driving circuit  537 , is supplied into data signal transmission film  535  via source PCB  536 . Additionally, after passing through source PCB  536  and data signal transmission film  535 , the gate driving signal supplied to the gate line among the driving signals having been processed by liquid crystal panel driving circuit  537  is supplied to gate signal transmission film  534  via the pattern for signal transmission formed to TFT substrate  532 . 
     As described above in detail, the method for transmitting the gate driving signal to the gate line by sequentially passing through liquid crystal panel driving circuit  537 , source PCB  536 , data signal transmission film  535 , TFT substrate  532  and gate signal transmission film  534  is implemented by a “one-chip technique,” in which the active elements of the gate PCB are mounted to liquid crystal panel driving circuit  537 , the wiring pattern of the gate PCB is formed onto TFT substrate  532 , and then the gate PCB is omitted. Likewise, the active elements of source PCB  536  are mounted to liquid crystal panel driving circuit  537 , and source PCB  536  is formed with only the wiring pattern for signal transmission. The foregoing one-chip technique may also be identically applied to the liquid crystal display panel assembly  350  shown in  FIG. 2 . 
     Meanwhile, although not shown in  FIG. 8 , backlight assembly  330  and mold frame  310  are sequentially interposed between liquid crystal display panel  531  and rear case  520 , as shown in  FIG. 2 . In addition, chassis  370 , as shown in  FIG. 2  is interposed between liquid crystal display panel  531  and front case  510  to be coupled to oppose mold frame  310 . 
     Referring to  FIG. 9 , as described above, information processing module  540  connected with liquid crystal panel driving circuit  537  is closely coupled to mold frame  538  on the rear plane of liquid crystal display panel  531 , together with liquid crystal panel driving circuit  537  while data signal transmission film  535  is bent. 
     At this time, a reinforcing bracket  539  may be installed onto mold frame  538  to firmly fix liquid crystal panel driving circuit  537  and information processing module  540 . 
     When information processing module  540  is accommodated into the interior of LCD  500  as described above, the overall thickness of LCD  500  may be increased in association with the number of elements included into the information processing module  540 . However, as described with reference to  FIG. 2 , the above-stated information processing module  540  is accepted within the receiving space of mold frame  538  provided in the manner that the thickness of light-conducting plate  331  becomes gradually thinner as it is being further distanced from light source portion  332 . Also, in liquid crystal display module  530  as described above, the number of PCBs to be received by liquid crystal display module  530  is decreased and the elements become compact by the one-chip technique. Thus, the thickness of LCD  500  hardly increases. Once information processing module  540  is accommodated within the interior of LCD  500  as described above, it is advantageous in that the space having been occupied by the main body of the computer system can be utilized for another use when the main body of the computer system and monitor unit are separately formed. 
     Referring to  FIG. 10 , information processing module  540  has a central processing unit CPU  541  for generating the control signals, a storing section  542  for storing or outputting data, and a video signal processor  543  for processing video data to supply it to liquid crystal panel driving circuit  537 . In addition, there is provided a power supplying section  545  for supplying electric power, an interfacing section  546  for interfacing data with an external information processing module, and a multimedia section  547 . These sections transmit the data and signals via a data bus  548  and a control bus  549  formed to a main board (not shown). Here, storing section  542  is formed by at least one selected among a ROM, a RAM, a hard disc drive and an optical disc. 
     Referring to  FIG. 11 , information processing module  540  as described above may be added with functions required by a user. For example, a modem  547   a  for performing the external communication, a sound card  547   b  for playing or recording sound, a graphic card  543 , etc. may be added. 
     Meanwhile, as described above, the information processing module accommodated within the LCD may selectively perform only the partial functions of information processing module  540  as shown in  FIGS. 10 and 11 . 
     For example, information processing module  540  may be formed by just an analog-digital converter electrically connected to liquid crystal panel driving circuit  840  to convert analog signals to digital signals. 
     In this case, as shown in  FIG. 12 , in addition to a monitor unit  900  having an analog-digital converter  870 , and an input unit such as a keyboard  600  and a mouse  601 , a main body (not shown) performing the function as information processing module  540  shown in  FIG. 8  is to be separately furnished. At this time, monitor unit  900  and the main body are electrically connected by a connection line, designated by reference numeral “ 602 .” 
     Also, referring to  FIG. 13 , the analog-digital converter  870  is accommodated within the display  900  in a manner similar to that in which the information processing module  540  is accommodated within the display  500  of  FIG. 9 . In other words, the analog-digital converter  870  is closely attached to the rear plane of the mold frame  850  together with the liquid crystal panel driving circuit  840  by the bending of the data signal transmission film  831 . In the same manner, a reinforcing bracket  860  is installed on the mold frame  850  to firmly fix the liquid crystal panel driving circuit  840  and the analog-digital converter  870  thereto. The analog-digital converter  870  may then be closely coupled to the reinforcing bracket  860  by means of, for example, one or more screws. 
     In  FIG. 13 , the other elements of monitor unit  900  that are not described, perform the same functions as those of the corresponding components of liquid crystal display module  530  shown in  FIG. 8 . 
     On the other hand, referring back to  FIG. 9 , information processing module  540 , liquid crystal panel driving circuit  537  and source PCB  536  are directly coupled with one another without using a separate connecting member such as the flexible PCB. 
     Furthermore, analog-digital converter  870 , liquid crystal panel driving circuit  840  and source PCB  830  shown in  FIG. 13  are also directly connected with one another without using a separate connecting member. 
     To attain such a coupling, as shown in  FIG. 14 , a coupling terminal  842  is formed between liquid crystal panel driving circuit  840  and source PCB  830 . Coupling terminal  842  is formed by the anisotropic conductive film or solder which affords an excellent electrothermosensitive power and an outstanding coupling force. 
     Moreover, liquid crystal panel driving circuit  840  and source PCB  830  are respectively formed with wiring patterns  832  and  832   a  for signal transmission. Then, via wiring patterns  832  and  832   a  for signal transmission, the signal is transmitted between liquid crystal panel driving circuit  840  and source PCB  830 . 
     Referring to  FIGS. 15 and 16  which illustrate the coupling relation of the information processing module and liquid crystal panel driving circuit, liquid crystal panel driving circuit  840  and analog-digital converter  870  are electrically connected by means of a socket or biting connector. 
     As shown in  FIG. 15 , an upper socket  841  and a lower socket  871  are respectively mounted to the planes of mutually connecting liquid crystal panel driving circuit  840  and analog-digital converter  870 . At this time, upper socket  841  is arranged with a plurality of contact pins  841   a  having a conductivity, and lower socket  871  is arranged with a plurality of contact holes  871   a  having the conductivity alike. Therefore, by coupling upper socket  841  and lower socket  871  to face each other, liquid crystal panel driving circuit  840  and analog-digital converter  540   a  are electrically connected to each other. 
     In addition, as shown in  FIG. 16 , biting connector  874  is mounted onto the portion of analog-digital converter  870  connected with liquid crystal panel driving circuit  840 , to electrically connect analog-digital converter  870  with liquid crystal panel driving circuit  840 . At this time, biting connector  874  is provided with an upper plate  876  and a lower plate  875  in the form of tongs. 
     A wiring pattern  877  for signal transmission is formed on the upper plane of lower plate  875 , i.e., the portion of being connected with liquid crystal panel driving circuit  840 . Also, a wiring pattern (not shown) for signal transmission is formed to a portion of liquid crystal panel driving circuit  840  corresponding to wiring pattern  877  for signal transmission of lower plate  875 . 
     The coupling method of liquid crystal panel driving circuit  840  and analog-digital converter  870  using biting connector  874  is as follows. First, liquid crystal panel driving circuit  840  is inserted between upper plate  876  and lower plate  875  of biting connector  874 . Then, upon pressing down upper plate  876  of biting connector  874 , wiring pattern  877  for signal transmission formed to lower plate  875  and the wiring pattern (not shown) for signal transmission of liquid crystal panel driving circuit  840 , electrically contact with each other to secure a signal transmission path between liquid crystal panel driving circuit  840  and analog-digital converter  870 . 
     The method for electrically connecting liquid crystal panel driving circuit  840  with analog-digital converter  870  by using the socket or biting connector as described above is identically applied to the method for electrically connecting liquid crystal panel driving circuit  537  and information processing module  540  shown in  FIG. 9 . 
     According to the LCD and information processing apparatus as described above, the liquid crystal panel driving circuit for generating the driving signal to drive the liquid crystal panel, is mounted to the main body of the computer system. The driving signal from the liquid crystal panel driving circuit is supplied to the source PCB formed with the wiring pattern for signal transmission via the flexible PCB. 
     The chassis, mold frame, front and rear cases of the LCD are fabricated in the form of corresponding to the light-conducting plate of the backlight assembly for minimizing the space between the liquid crystal display module and mold frame produced by eliminating the liquid crystal panel driving circuit from the LCD. That is, as the chassis, mold frame, front and rear cases are further distanced from the position of receiving the light source portion, the depth of the receiving space becomes shallow as the exposure plate. 
     Accordingly, when the chassis, mold frame, front and rear cases are assembled for receiving the liquid crystal display module, the side thickness of the LCD becomes thinner as being further distanced from the position of receiving the light source portion with the consequence of making the thickness of the LCD slim. 
     Meantime, in connection with the trend of the gradual decrease in the number of the PCBs to be received into the liquid crystal display module and of the high integration of the elements applied to the computer system by the one-chip technique, the information processing module mounted to the main body may be furnished between the mold frame and rear case. Upon accepting the information processing module into the interior of the LCD as above, there is an advantage that the space having been occupied by the main body of the computer system when the main body of the computer system and the monitor system are separately provided, may be utilized for another use. 
     Furthermore, only one among several functions of the information processing module as the analog-digital converter may be selectively furnished between the mold frame and rear case as the analog-digital converter. When the information processing module is placed into the internal space of the LCD as described above, the information processing module, liquid crystal panel driving circuit and source PCB are directly connected by using the anisotropic conductive film or solder. Consequently, while the generation of the electromagnetic wave resulting from using the separate connecting member such as the flexible PCB is minimized, the product performance of the LCD can be maximized. 
     While the present invention has been particularly shown and described with reference to particular embodiment thereof, it will be understood by those skilled in the art that various changes in form and details may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims.