Patent Publication Number: US-2012033150-A1

Title: Liquid crystal display panel and method of fabricating the same

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATION 
     This application claims the benefit of Korean Patent Application No. 10-2010-0076632, filed on Aug. 9, 2010, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. 
     BACKGROUND 
     1. Field 
     The described technology generally relates to a liquid crystal display panel and a method of fabricating the display panel, and more particularly, to a liquid crystal display panel and a method of fabricating the display panel, which may improve a durability of the liquid crystal display panel easily. 
     2. Description of the Related Technology 
     Recently, display panels have been substituted by thin flat display panels that are portable. Among the flat panel displays, liquid crystal display panels have low power consumption and generate little electromagnetic waves, and thus, are considered as next generation display panels. 
     A liquid crystal display panel is fabricated by injecting liquid crystal between two substrates and combining the two substrates to each other by using a sealing member. The sealing member is hardened by a light source such as ultraviolet radiation; however, it is not easy to uniformly harden the sealing member. Thus, a coupling property between the two substrates may be degraded, and consequently, there is a limitation in improving a durability of the liquid crystal display panel. 
     SUMMARY 
     One inventive aspect is a liquid crystal display panel and a method of fabricating the liquid crystal display panel, which may improve a durability of the liquid crystal display panel easily. 
     Another aspect is a liquid crystal display panel including: a first substrate and a second substrate facing each other; a liquid crystal layer disposed between the first substrate and the second substrate; a color filter disposed between the liquid crystal layer and the second substrate; a black matrix formed on the color filter; a sealing member disposed on an outer portion of the liquid crystal layer between the first substrate and the second substrate so as to couple the first substrate and the second substrate to each other; a plurality of protrusion members formed on the second substrate so as to overlap the sealing member; a reflective layer formed on the plurality of protrusion members; and a cover layer formed on the reflective layer so as to cover the reflective layer and the plurality of protrusion members. 
     The liquid crystal display panel may further include a wiring portion formed between the sealing member and the first substrate. 
     The liquid crystal display panel may further include: a thin film transistor disposed between the first substrate and the liquid crystal layer so as to be electrically connected to the wiring portion, and comprising a gate electrode, an active layer, a source electrode, and a drain electrode. 
     The cover layer may fill spaces between the plurality of protrusion members. 
     The cover layer may be formed between the sealing member and the reflective layer. 
     A surface of the cover layer, which contacts the sealing member, may be formed flat. 
     The liquid crystal display panel may further include a buffer portion between the second substrate and the color filter. 
     The buffer portion may be formed on the second substrate so as to be separated from the protrusion members. 
     The buffer portion may be formed of the same material as that of the protrusion members. 
     The buffer portion may include one or more via holes, and the color filter may be formed to fill the via holes. 
     The reflective layer may be formed of the same material as that of the black matrix. 
     The liquid crystal display panel may further include a spacer disposed between the first substrate and the second substrate so as to maintain a space in which the liquid crystal layer is disposed, and the cover layer may be formed of the same material as that of the spacer. 
     The cover layer may be elongated so as to cover the color filter and the black matrix. 
     The cover layer may be formed of the same material as that of the color filter. 
     Another aspect is a method of fabricating a liquid crystal display panel, the method including: preparing a first substrate and a second substrate which face each other; disposing a liquid crystal layer between the first substrate and the second substrate; disposing a black matrix between the liquid crystal layer and the second substrate; disposing a color filter on the black matrix; disposing a sealing member on an outer portion of the liquid crystal layer between the first substrate and the second substrate; forming a plurality of protrusion members on the second substrate so as to overlap the sealing member; forming a reflective layer on the protrusion members; forming a cover layer on the reflective layer so as to cover the reflective layer and the protrusion members; and irradiating ultraviolet (UV) radiation onto the sealing member so as to couple the first substrate and the second substrate to each other. 
     The method may further include forming a wiring portion between the sealing member and the first substrate. 
     The UV radiation may be irradiated from a side of the first substrate toward the second substrate. 
     The UV radiation transmitting through the sealing member may be reflected by the reflective layer. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic cross-sectional view of a liquid crystal display panel according to an embodiment. 
         FIGS. 2A through 2E  are cross-sectional views illustrating a method of fabricating the liquid crystal display panel of  FIG. 1  according to an embodiment. 
         FIG. 3  is a schematic cross-sectional view of a liquid crystal display panel according to another embodiment. 
         FIGS. 4A through 4C  are cross-sectional views illustrating a method of fabricating the liquid crystal display panel of  FIG. 3  according to another embodiment. 
         FIG. 5  is a schematic cross-sectional view of a liquid crystal display panel according to another embodiment. 
         FIGS. 6A through 6D  are cross-sectional views illustrating a method of fabricating the liquid crystal display panel of  FIG. 5  according to another embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments will be described in detail with reference to accompanying drawings. 
       FIG. 1  is a schematic cross-sectional view of a liquid crystal display panel  100  according to an embodiment. 
     Referring to  FIG. 1 , the liquid crystal display panel  100  includes a first substrate  101 , a second substrate  102 , a liquid crystal layer  120 , a color filter  113 , a black matrix  114 , a sealing member  116 , a protrusion member  117 , a reflective layer  118 , and a cover layer  119 . For the convenience of explanation,  FIG. 1  shows a partial cross-section of the liquid crystal display panel  100 . 
     The first and second substrates  101  and  102  are disposed to face each other, and the liquid crystal layer  120  is disposed between the two substrates  101  and  102 . The sealing member  116  is disposed on an outer portion of the liquid crystal layer  120 . On the first substrate  101 , a thin film transistor that is electrically connected to the liquid crystal layer  120  is formed, and the thin film transistor includes a gate electrode  103 , an active layer  105 , a source electrode  106 , and a drain electrode  107 . 
     In one embodiment, the first substrate  101  is formed of a transparent material. For example, the first substrate  101  may be formed of a transparent glass material including SiO 2  or a transparent plastic material. 
     The gate electrode  103  is formed on the first substrate  101  in a predetermined pattern. A gate insulating layer  104  is formed on the gate electrode  103 , and the active layer  105  is formed on the gate insulating layer  104  in a predetermined pattern. The source electrode  106  and the drain electrode  107  are formed on the active layer  105 . Although not shown in  FIG. 1 , an ohmic contact layer may be further formed between the active layer  105  and the source electrode  106  and the active layer  105  and the drain electrode  107 . 
     In addition, a passivation layer  108  is formed to cover the source electrode  106  and the drain electrode  107 . Here, the passivation layer  108  is etched to expose the source electrode  106  or the drain electrode  107 , and a first electrode  109  is formed in a predetermined pattern so as to be electrically connected to the exposed source or drain electrode  106  or  107 . 
     The second substrate  102  faces the first substrate  101 . In one embodiment, the second substrate  102  is also formed of a transparent material, like the first substrate  101 . The active layer  120  is disposed between the first and second substrates  101  and  102 . Although not shown in  FIG. 1 , an orientation layer may be disposed for orientation of the liquid crystal layer  120 . 
     A buffer portion  112  may be formed on the second substrate  102 . The buffer portion  112  may be formed of various organic materials. The buffer portion  112  provides a flat surface on a lower portion of the second substrate  102  so that a surface of the color filter  113  may be uniformed. In addition, the buffer portion  112  buffs stress applied to the liquid crystal display panel  100  so as to improve a durability of the liquid crystal display panel  100 . 
     The black matrix  114  is formed on the buffer portion  112  in a predetermined pattern. The black matrix  114  prevents visible radiation realized by the color filter  113  from mixing with each other and interfering with each other. 
     The color filter  113  is formed on the black matrix  114 . The color filter  113  is also located on the buffer portion  112 . In one embodiment, one or more via holes are formed in the buffer portion  112 , and the color filter  113  is formed to fill the via holes. Thus, a height of the color filter  113  may be controlled, and a coupling force between the color filter  113  and the second substrate  102  may be improved. 
     A second electrode  110  is formed on a lower surface of the color filter  113 , and the liquid crystal layer  120  is formed between the first electrode  109  and the second electrode  110 . 
     A spacer  111  is disposed between the first and second electrodes  109  and  110 . The spacer  111  maintains a space in which the liquid crystal layer  120  is disposed. 
     The sealing member  116  is disposed on the outer portion of the liquid crystal layer  120  so as to couple the first and second substrates  101  and  102  to each other. The sealing member  116  may be an ultraviolet (UV)-curable resin. 
     A plurality of protrusion members  117  are disposed to at least partially overlap with the sealing member  116 . In one embodiment, the protrusion members  117  are formed on the second substrate  102 . In this embodiment, the protrusion members  117  are formed on the same layer as the buffer portion  112 , and may include the same material as the buffer portion  112 . The plurality of protrusion members  117  are formed to be separated from each other. 
     The reflective layer  118  is formed on the protrusion members  117 . The reflective layer  118  is formed to cover surfaces of the protrusion members  117 . The reflective layer  118  includes metal, for example, the same material as that included in the black matrix  114 . 
     The cover layer  119  is formed on the reflective layer  118 . The cover layer  119  is formed to contact the sealing member  116 . The cover layer  119  is formed to fill spaces between the protrusion members  117 . The cover layer  119  prevents the protrusion members  117  and reflective layer  118  from being damaged. 
     In one embodiment, a surface of the cover layer  119 , which contacts the sealing member  116 , is formed substantially flat to improve coupling force between the cover layer  119  and the sealing member  116 . 
     The cover layer  119  may be formed of various materials, for example, the same material as that forming the spacer  111 . 
     A wiring portion  115  is formed on the first substrate  101  to contact the sealing member  116 . The wiring portion  115  includes a plurality of wires that are separated from each other. Although not shown in  FIG. 1 , the wiring portion  115  is electrically connected to electrodes of the thin film transistor, that is, the gate electrode  103 , the source electrode  106 , or the drain electrode  107 . 
       FIG. 1  shows a thin film transistor (TFT)-liquid crystal display (LCD) as an example; however, the liquid crystal panel  100  is not limited thereto. Operations of the liquid crystal display panel  100  will be described as follows. A potential difference is generated between the first and second electrodes  109  and  110  by an external signal controlled by the gate electrode  103 , the source electrode  106 , and the drain electrode  107 , and an arrangement of the liquid crystal layer  120  is determined by the potential difference. In addition, visible radiation supplied from an additional backlight that is installed on an outer portion of the liquid crystal display panel  100  is shielded or transmitted through the liquid crystal display panel  100  according to the arrangement of the liquid crystal layer  120 . When the light transmits through the color filter  13 , color images are realized. 
     The liquid crystal display panel  100  includes the sealing member  116 , and the sealing member  116  includes a resin that is cured by the light such as UV radiation. During fabricating the liquid crystal display panel  100 , the UV radiation is incident from a side of the first substrate  101  to cure the sealing member  116 , and then, the UV ray is partially blocked due to the wiring portion  115 . Thus, the UV ray may not be evenly incident onto the sealing member  116 . In particular, a part of the sealing member  116 , which is adjacent to the wiring portion  115 , may be less cured than other parts of the sealing member  116 . 
     However, the liquid crystal display panel  100  includes the protrusion members  117 . In addition, the reflective layer  118  is formed on the protrusion members  117 . The UV ray transmitting through the sealing member  116  among the UV radiation incident through the first substrate  101  is reflected by the reflective layer  118  toward the first substrate  101 . Therefore, the UV radiation may effectively reach the part of the sealing member  116 , which is adjacent to the wiring portion  115 , and thus, the entire part of the sealing member  116  may be evenly cured. 
     Consequently, durability of the sealing member  116 , and thereby improving durability of the liquid crystal display panel  100 . 
       FIGS. 2A through 2E  are cross-sectional views illustrating a method of fabricating the liquid crystal display panel  100  of  FIG. 1  according to an embodiment. 
     Referring to  FIG. 2A , the buffer portion  112  and the protrusion members  117  are formed on the second substrate  102 . The buffer portion  112  and the protrusion members  117  may be substantially simultaneously patterned by using an organic material. The buffer portion  112  includes one or more via holes  112   a.    
     Referring to  FIG. 2B , the black matrix  114  and the reflective layer  118  are formed. The black matrix  114  is formed on the buffer portion  112  in a predetermined pattern. The reflective layer  118  is formed on the protrusion members  117 . The reflective layer  118  may be formed of the same material as that of the black matrix  114  substantially simultaneously with the black matrix  114 . 
     After that, referring to  FIG. 2C , the color filter  113  and the second electrode  110  are formed. The color filter  113  is formed on the black matrix  114 , and is formed to fill the via holes  112   a  formed in the buffer portion  112 . The second electrode  110  may include a transparent conductive material such as indium tin oxide (ITO). 
     Referring to  FIG. 2D , the cover layer  119  and the spacer  111  are formed. The cover layer  119  is formed on the reflective layer  118 , and is formed to fill the spaces between the protrusion members  117  and to have a flat surface. The spacer  111  is formed on the second electrode  110 . The cover layer  119  and the spacer  111  may be formed of the same insulating material as each other. 
     Referring to  FIG. 2E , the sealing member  116  is formed between the first and second substrates  101  and  102 , and then, UV radiation is irradiated onto the sealing member  116 . Then, the liquid crystal display panel  100  of  FIG. 1  is fabricated. The UV radiation is irradiated from the side of the first substrate  101  toward the second substrate  102  to cure the sealing member  116 . In addition, the UV radiation reaching the protrusion members  117  and the reflective layer  118  after transmitting through the sealing member  116  may be reflected toward the first substrate  101 . Thus, the entire portion of the sealing member  116  may be evenly cured. 
       FIG. 3  is a schematic cross-sectional view of a liquid crystal display panel  200  according to another embodiment. 
     Referring to  FIG. 3 , the liquid crystal display panel  200  includes a first substrate  201 , a second substrate  202 , a liquid crystal layer  220 , a color filter  213 , a black matrix  214 , a sealing member  116 , a plurality of protrusion members  217 , a reflective layer  218 , and a cover layer  219 . For the convenience of explanation,  FIG. 3  shows a partial cross-section of the liquid crystal display panel  200 . 
     The first and second substrates  201  and  202  are disposed to face each other, and the liquid crystal layer  220  is disposed between the first and second substrates  201  and  202 . The sealing member  216  is disposed on an outer portion of the liquid crystal layer  220 . In addition, a thin film transistor that is electrically connected to the liquid crystal layer  220  is formed on the first substrate  201 , and the thin film transistor includes a gate electrode  203 , an active layer  205 , a source electrode  206 , and a drain electrode  207 . 
     The gate electrode  203  is formed on the first substrate  201  in a predetermined pattern. A gate insulating layer  204  is formed on the gate electrode  203 , and the active layer  205  is formed on the gate insulating layer  204  in a predetermined pattern. The source and drain electrodes  206  and  207  are formed on the active layer  205 . 
     A passivation layer  208  is formed to cover the source and drain electrodes  206  and  207 . Here, the passivation layer  208  is etched to expose the source electrode  206  or the drain electrode  207 , and then, a first electrode  209  is formed in a predetermined pattern to be electrically connected to the exposed electrode. 
     The second substrate  202  faces the first substrate  201 . The liquid crystal layer  220  is disposed between the first and second substrates  201  and  202 . 
     A buffer portion  212  is formed on the second substrate  202 . The buffer portion  212  may be formed of various organic materials. The buffer portion  212  provides a flat surface on the lower portion of the second substrate  202  so that the color filter  213  has substantially an even surface. In addition, the buffer portion  212  buffs stress applied to the liquid crystal display panel  200  so as to improve durability of the liquid crystal display panel  200 . 
     The black matrix  214  is formed on the buffer portion  212  in a predetermined pattern. The color filter  213  is formed on the black matrix  214 . The color filter  213  is also located on the buffer portion  212 . The buffer portion  212  includes one or more via holes, and the color filter  213  is formed to fill the via holes in the buffer portion  212 . Therefore, a height of the color filter  213  may be adjusted, and a coupling force between the color filter  213  and the second substrate  202  may be improved. 
     The cover layer  219  is formed on a lower surface of the color filter  213 , and a second electrode  210  is formed on a lower portion of the cover layer  219 . In addition, the liquid crystal layer  220  is disposed between the first and second electrodes  209  and  210 . 
     The spacer  211  is disposed between the first and second electrodes  209  and  210 , and the spacer  211  maintains the space in which the liquid crystal layer  220  is disposed. 
     On the other hand, the sealing member  216  is disposed on the outer portion of the liquid crystal layer  220  so that the first and second substrates  201  and  202  are coupled to each other. The sealing member  216  may be a UV-curable resin. 
     In one embodiment, the protrusion members  217  are disposed so as to at least partially overlap with the sealing member  216 . In this embodiment, the protrusion members  217  are formed on the second substrate  202 . That is, the protrusion members  217  are formed on the same layer as that of the buffer portion  212 , and may include the same material as that of the buffer portion  212 . The protrusion members  217  are separated from each other. 
     The reflective layer  218  is formed on the protrusion members  217 . The reflective layer  218  is formed to cover surfaces of the protrusion members  217 . The reflective layer  218  includes a metal material, for example, the same material as that of the black matrix  214 . 
     The cover layer  219  is also formed on the reflective layer  218 . That is, the cover layer  219  is formed to be elongated so as to cover the reflective layer  218 , the color filter  213 , and the black matrix  214 . The cover layer  219  contacts the sealing member  216 . The cover layer  219  is formed to fill spaces between the protrusion members  217 . The cover layer  219  prevents the protrusion members  217  and the cover layer  219  from being damaged. 
     In addition, the cover layer  219  prevents the color filter  213  and the black matrix  214  from being damaged, and the second electrode  210  from isolating from the cover layer  219 . 
     In one embodiment, a surface of the cover layer  219 , which contacts the sealing member  216 , is formed substantially flat so as to improve the coupling force between the cover layer  219  and the sealing member  216 . 
     The cover layer  219  may be formed of various insulating materials, for example, a resin. 
     A wiring portion  215  is formed on the first substrate  201  to contact the sealing member  216 . 
     The liquid crystal display panel  200  includes the protrusion members  217 . In addition, the reflective layer  218  is formed on the protrusion members  217 . During fabricating the liquid crystal display panel  200 , the UV radiation incident through the first substrate  201  for forming the sealing member  216  are reflected by the reflective layer  218  toward the first substrate  201 . Thus, the UV radiation may effectively reach a part of the sealing member  216 , which is adjacent to the wiring portion  215 , and thus, entire portion of the sealing member  216  may be evenly cured. 
     Therefore, durability of the sealing member  216  is improved, and thereby improving the durability of the liquid crystal display panel  200 . 
       FIGS. 4A through 4C  are cross-sectional views illustrating a method of fabricating the liquid crystal display panel  200  of  FIG. 3  according to another embodiment. For the convenience of explanation, differences from the previous embodiment will be described. 
     Referring to  FIG. 4A , the buffer portion  212 , the protrusion members  217 , the color filter  213 , the black matrix  214 , and the reflective layer  218  are formed on the second substrate  202 , and then, the cover layer  219  is formed. The cover layer  219  is formed to cover the protrusion members  217 , the color filter  213 , and the black matrix  214 . In addition, the cover layer  219  is formed to have a flat surface. 
     After that, as shown in  FIG. 4B , the second electrode  210  and the spacer  211  are formed. The second electrode  210  is formed on the cover layer  219 , and the spacer  211  is formed on the second electrode  210 . 
     Referring to  FIG. 4C , the sealing member  216  is formed between the first and second substrates  201  and  202 , and the UV radiation is irradiated onto the sealing member  216 . Then, the liquid crystal display panel  200  of  FIG. 3  is fabricated. The UV radiation is irradiated from a side of the first substrate  201  toward the second substrate  202  to cure the sealing member  216 . In addition, the UV radiation reaching the protrusion members  217  and the reflective layer  218  after transmitting through the sealing member  216  are reflected toward the first substrate  201 . Then, the entire portion of the sealing member  216  may be substantially evenly cured. 
       FIG. 5  is a schematic cross-sectional view of a liquid crystal display panel  300  according to another embodiment. 
     Referring to  FIG. 5 , the liquid crystal display panel  300  includes a first substrate  301 , a second substrate  302 , a liquid crystal layer  320 , a color filter  313 , a black matrix  314 , a sealing member  316 , a protrusion member  317 , a reflective layer  318 , and a cover layer  319 . For the convenience of explanation,  FIG. 5  shows a partial cross-section of the liquid crystal display panel  300 . 
     The first and second substrates  301  and  302  are disposed to face each other, and the liquid crystal layer  320  is disposed between the first and second substrates  301  and  302 . The sealing member  316  is disposed on an outer portion of the liquid crystal layer  320 . In addition, a thin film transistor that is electrically connected to the liquid crystal layer  320  is formed on the first substrate  301 , and the thin film transistor includes a gate electrode  303 , an active layer  305 , a source electrode  306 , and a drain electrode  307 . 
     The gate electrode  303  is formed on the first substrate  301  in a predetermined pattern. A gate insulating layer  304  is formed on the gate electrode  303 , and the active layer  305  is formed on the gate insulating layer  304  in a predetermined pattern. The source and drain electrodes  306  and  307  are formed on the active layer  305 . 
     In addition, a passivation layer  308  is formed to cover the source and drain electrodes  306  and  307 . Here, the passivation layer  308  is etched to expose the source electrode  306  or the drain electrode  307 , and then, a first electrode  309  is formed in a predetermined pattern to be electrically connected to the exposed electrode. 
     The second substrate  302  faces the first substrate  301 . The liquid crystal layer  320  is disposed between the first and second substrates  301  and  302 . 
     A buffer portion  312  is formed on the second substrate  302 . The buffer portion  312  may be formed of various organic materials. The buffer portion  312  provides substantially a flat surface on the lower portion of the second substrate  302  so that the color filter  313  has substantially an even surface. In addition, the buffer portion  312  buffs stress applied to the liquid crystal display panel  300  so as to improve durability of the liquid crystal display panel  300 . 
     The black matrix  314  is formed on the buffer portion  312  in a predetermined pattern. The black matrix  314  prevents the visible radiation realized by the color filter  313  from mixing with each other and interfering with each other, and blocks external light. 
     The color filter  313  is formed on the black matrix  314 . The color filter  313  is also located on the buffer portion  312 . The buffer portion  312  includes one or more via holes, and the color filter  313  is formed to fill the via holes in the buffer portion  312 . Therefore, a height of the color filter  313  may be adjusted, and a coupling force between the color filter  313  and the second substrate  302  may be improved. 
     A second electrode  310  is formed on a lower surface of the color filter  313 , and the liquid crystal layer  320  is disposed between the first and second electrodes  309  and  310 . 
     The spacer  311  is disposed between the first and second electrodes  309  and  310 , and the spacer  311  maintains the space in which the liquid crystal layer  320  is disposed. 
     On the other hand, the sealing member  316  is disposed on the outer portion of the liquid crystal layer  320  so that the first and second substrates  301  and  302  are coupled to each other. The sealing member  316  may be a UV-curable resin. 
     The protrusion members  317  are disposed so as to at least partially overlap with the sealing member  316 . In more detail, the protrusion members  317  are formed on the second substrate  302 . That is, the protrusion members  317  are formed on the same layer as that of the buffer portion  312 , and may include the same material as that of the buffer portion  312 . The protrusion members  317  are separated from each other. 
     The reflective layer  318  is formed on the protrusion members  317 . The reflective layer  318  is formed to cover surfaces of the protrusion members  317 . The reflective layer  318  includes a metal material, for example, the same material as that of the black matrix  314 . 
     The cover layer  319  is also formed on the reflective layer  318 . The cover layer  319  contacts the sealing member  316 . The cover layer  319  is formed to fill spaces between the protrusion members  317 . The cover layer  319  prevents the plurality of protrusion members  317  and the cover layer  319  from being damaged. 
     In addition, a surface of the cover layer  319 , which contacts the sealing member  316 , is formed flat so that the coupling force between the cover layer  319  and the sealing member  316  may be improved. 
     The cover layer  319  may be formed of various materials, for example, the same material as that of the color filter  313 . 
     A wiring portion  315  is formed on the first substrate  301  so as to contact the sealing ember  316 . The wiring portion  315  includes a plurality of wires that are separated from each other. In addition, although not shown in  FIG. 5 , the wiring portion  315  is electrically connected to the electrode of the thin film transistor, that is, the gate electrode  303 , the source electrode  306 , or the drain electrode  307 . 
     The liquid crystal display panel  300  includes the protrusion members  317 . In addition, the reflective layer  318  is formed on the protrusion members  317 . During fabricating the liquid crystal display panel  300 , the UV radiation incident through the first substrate  301  to cure the sealing member  316  are reflected by the reflective layer  318  toward the first substrate  301 . Thus, the UV radiation may effectively reach the portion of the sealing member  316 , which is adjacent to the wiring portion  315 , and thus, the entire portion of the sealing member  316  may be substantially evenly cured. 
     Therefore, durability of the sealing member  316  is improved, and thereby improving the durability of the liquid crystal display panel  300 . 
       FIGS. 6A through 6D  are cross-sectional views illustrating a method of fabricating the liquid crystal display panel  300  of  FIG. 5  according to another embodiment. 
     Referring to  FIG. 6A , the buffer portion  312 , the protrusion members  317 , the black matrix  314 , and the reflective layer  318  are formed on the second substrate  302 . The black matrix  314  is formed on the buffer portion  312  in a predetermined pattern. The reflective layer  318  is formed on the protrusion members  317 . The reflective layer  318  may be formed substantially simultaneously with the black matrix  314 , and formed of the same material as that of the black matrix  314 . The buffer portion  312  includes one or more via holes. 
     After that, referring to  FIG. 6B , the cover layer  319 , the color filter  313 , and the second electrode  310  are formed. The color filter  313  is formed on the black matrix  314  to fill the via holes formed in the buffer portion  312 . The second electrode  310  is formed on the color filter  313 . The second electrode  310  may include a transparent conductive material such as ITO. The cover layer  319  is formed on the reflective layer  318  to fill spaces between the protrusion members  317 , and has a flat surface. The cover layer  319  may be formed of the same material as that of the color filter  313 . In more detail, the color filter  313  includes various filters corresponding to various colors, and the cover layer  319  may be formed of the same material as that included in one of the filters. 
     Referring to  FIG. 6C , the spacer  311  is formed on the second electrode  310 . The spacer  311  is formed of an insulating material. 
     Referring to  FIG. 6D , the sealing member  316  is formed between the first and second substrates  301  and  302 , and the UV radiation is irradiated thereto. Then, the liquid crystal display panel  300  of  FIG. 5  is fabricated. The UV radiation is irradiated from a side of the first substrate  301  toward the second substrate  302  in order to cure the sealing member  316 . In addition, the UV radiation reaching the protrusion members  317  and the reflective layer  318  after transmitting through the sealing member  316  are reflected back toward the first substrate  301 . Therefore, the entire portion of the sealing member  316  may be cured evenly. 
     According to at least one of the disclosed embodiments, the durability of the liquid crystal display panel may be easily improved. 
     While the disclosed embodiments have been particularly shown and described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the following claims.