Patent Abstract:
An optical adhesive film for improving the adhesive strength between constitutional elements of a flat panel display device, and a flat panel display device having the same. According to an aspect of the present invention, there is provided an optical adhesive film for use in a flat panel display module that displays an image, the optical adhesive film including a transmission unit disposed on the flat panel display module and allowing the image to transmit through the transmission unit; a wing member extending from at least one side surface of the transmission unit, and covering side surfaces and a portion of a rear surface of the flat panel display module; and an adhesive member disposed covering all surfaces of the transmission unit and the wing member.

Full Description:
CLAIM PRIORITY 
     This application claims the benefit of Korean Patent Application No. 10-2010-0110996, filed on Nov. 9, 2010 and Korean Patent Application No. 10-2011-0053376, filed on Jun. 2, 2011, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     One or more aspects of the present invention relate to an optical adhesive film and a flat panel display device having the same. 
     2. Description of the Related Art 
     Various display devices have recently been developed to replace cathode ray tubes. Examples of such display devices include a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), and an electroluminescent (EL) display. 
     From among these display devices, the PDP has drawn much attention since it has a simple structure, and its manufacturing process is considered most suitable to provide a large screen. However, the PDP has low luminescence efficiency and brightness and consumes a large amount of power. 
     The EL display may be largely classified into an inorganic EL device and an organic EL device according to the material of the emission layer. The EL display is a self-emitting device, and has a quick response time, high luminescence efficiency, high brightness, and wide viewing angles. In particular, an organic light-emitting diode (OLED) display device, which is an EL device using an organic material, requires a low direct-current (DC) driving voltage, can be manufactured as a thin-film display device, can emit light having uniform characteristics, is easy to manufacture in terms of pattern formation, has high luminescence efficiency, and can emit various colors in the visible region. Therefore, research has been actively conducted into the field of OLED display devices. 
     In the case of such an organic EL device, a bottom-emission method or a top-emission method may be established according to the direction in which light is emitted. Also, an organic EL device may be classified into passive organic light-emitting diode (PMOLED) devices and active PMOLED (AMOLED) devices according to the driving method. 
     SUMMARY OF THE INVENTION 
     One or more aspects of the present invention provide an optical adhesive film for improving the adhesive strength between panels of a flat panel display device, and a flat panel display device having the same. 
     According to an aspect of the present invention, there is provided an optical adhesive film for use in a flat panel display module that displays an image, the optical adhesive film including a transmission unit disposed on the flat panel display module which allows an image to transmit through the transmission unit; and a wing member extending from at least one side surface of the transmission unit and substantially covering as least a side surface and at least a portion of a rear surface of the flat panel display module. The transmission unit is autohered to a front surface of the flat panel display module, and the wing member is autohered to side surfaces and the rear surface of the flat panel display module. 
     The transmission unit or the wing member may be directly attached to the flat panel display module without having any member therebetween. 
     The transmission unit or the wing member may be autohered to the flat panel display module due to surface energy therebetween. 
     The wing member may include a base portion extending from a side surface of the transmission unit, a light-shielding member disposed on the base portion, and a reflection member disposed on the light-shielding member. 
     According to an aspect of the present invention, there is provided an optical adhesive film for use in a flat panel display module that displays an image, the optical adhesive film including a transmission unit disposed on the flat panel display module and allowing the image to transmit through the transmission unit; a wing member extending from at least one side surface of the transmission unit, and covering at least one side surface and at least a portion of a rear surface of the flat panel display module; and an adhesive member disposed substantially covering all surfaces of the transmission unit and the wing member. The adhesive member is disposed between the flat panel display module, the transmission unit, and the wing member to bond the flat panel display module, the transmission unit, and the wing member with one another. 
     The transmission unit may allow light emitted from the flat panel display device to pass through the transmission unit. 
     The transmission unit may include a material such as polyethylene terephthalate (PET), a triacetyl cellulose (TAC) film, polyethylene (PE), acryl, or polyolefin. 
     The size of the transmission unit may be equal to or greater than the size of a display region of the flat panel display module, on which the image is displayed. 
     The width of the wing member may be greater than the height of the flat panel display module. 
     The wing member may cover at least a side surface and at least a portion of a rear surface of the flat panel display module. 
     The wing member may include a base portion extending from a side surface of the transmission unit; a light-shielding member disposed on the base portion; and a reflection member disposed on the light-shielding member. 
     The base portion may be combined with the transmission unit as one body. 
     The base portion may include a material such as polyethylene terephthalate (PET), a triacetyl cellulose (TAC) film, polyethylene (PE), acryl, or polyolefin. 
     The light-shielding member may absorb external light incident via the base portion. 
     The light-shielding member may include paint or pigment that absorbs visible light. 
     The size of the light-shielding member may be equal to or greater than the size of the reflection member. 
     The light-shielding member may be disposed substantially on the entire wing member and a portion of the transmission unit. 
     The reflection member may reflect light emitted from the flat panel display module, thereby preventing the light from leaking to the outside 
     The reflection member may include paint or pigment that absorbs light. 
     The adhesive member may allow light to penetrate through. 
     According to another aspect of the present invention, there is provided a flat panel display device including a flat panel display module for displaying an image; and an optical adhesive film adhered onto, not only front and side surfaces of the flat panel display module, but also a portion of a rear surface of the flat panel display module. The image displayed on the front surface of the flat panel display module is output via the optical adhesive film. 
     The optical adhesive film may include a transmission unit disposed on the front surface of the flat panel display module and allowing the image to transmit through the transmission unit; a wing member extending from at least one side surface of the transmission unit, and covering the side surface and the portion of the rear surface of the flat panel display module; and an adhesive member substantially disposed over the transmission unit and the wing member. The adhesive member is disposed between the flat panel display module, the transmission unit, and the wing member so as to bond the flat panel display module, the transmission unit, and the wing member with one another. 
     The transmission unit may allow light emitted from the flat panel display module to transmit through the transmission unit. 
     The transmission unit may include a material such as polyethylene terephthalate (PET), a triacetyl cellulose (TAC) film, polyethylene (PE), acryl, or polyolefin. 
     The size of the transmission unit may be equal to or greater than the size of a display region of the flat panel display module, on which the image is displayed. 
     The width of the wing member may be greater than the height of the flat panel display module. 
     The wing member may cover the side surface and a portion of the rear surface of the flat panel display module. 
     The wing member may include a base portion extending from at least one side surface of the transmission unit; a light-shielding member disposed on the base portion; and a reflection member disposed on the light-shielding member. 
     The base portion may be combined with the transmission unit as one body. 
     The base portion may include a material such as polyethylene terephthalate (PET), a triacetyl cellulose (TAC) film, polyethylene (PE), acryl, or polyolefin. 
     The light-shielding member may absorb external light incident via the base portion. 
     The light-shielding member may include paint or pigment that absorbs visible light. 
     The size of the light-shielding member may be equal to or greater than the size of the reflection member. 
     The light-shielding member may be disposed on the entire wing member and a portion of the transmission unit. 
     The reflection member may reflect light emitted from the flat panel display module, thereby preventing the light from leaking to the outside. 
     The reflection member may include paint or pigment that absorbs light. 
     The flat panel display module may have a structure, in which a backlight unit, a polarizing plate, and a liquid crystal panel are sequentially stacked. 
     According to another aspect of the present invention, there is provided a flat panel display device including a flat panel display module for displaying an image; and an optical adhesive film autohered onto, not only on front and side surfaces of the flat panel display module, but also on a portion of a rear surface of the flat panel display module. The image displayed on the front surface of the flat panel display module is output via the optical adhesive film. The optical adhesive film is directly adhered onto the flat panel display module due to surface energy therebetween and without having any member between the optical adhesive film and the flat panel display module. 
     The optical adhesive film may include a transmission unit disposed on the front surface of the flat panel display module and allowing the image to transmit through the transmission unit, and a wing member extending from at least one side surface of the transmission unit and covering the side surfaces and a portion of a rear surface of the flat panel display module. The transmission unit may be attached to the front surface of the flat panel display module, and the wing member may be autohered to the side surfaces and the rear surface of the flat panel display module. 
     The wing member may include a base portion extending from a side surface of the transmission unit, a light-shielding member disposed on the base portion, and a reflection member disposed on the light-shielding member. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other features of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: 
         FIG. 1  is a schematic plane view of an optical adhesive film according to an embodiment of the present invention; 
         FIG. 2  is a cross-sectional view taken along the line I-I of  FIG. 1 ; 
         FIG. 3  is a cross-sectional view taken along the line II-II of  FIG. 1 ; 
         FIG. 4  is a schematic exploded perspective view of a flat panel display device that includes the optical adhesive film of  FIG. 1 , according to an embodiment of the present invention; 
         FIG. 5  is a schematic perspective view of the flat panel display device of  FIG. 4 ; 
         FIG. 6  is a cross-sectional view of a portion of the flat panel display device of  FIG. 4 ; 
         FIG. 7  is a cross-sectional view of a flat panel display device according to another embodiment of the present invention; 
         FIG. 8  is a cross-sectional view of a flat panel display device according to another embodiment of the present invention; and 
         FIG. 9  is a cross-sectional view of a flat panel display device according to another embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, exemplary embodiments of the present invention will be described in greater detail with reference to the accompanying drawings. 
     An active LCD that uses a thin film transistor (TFT) as a switch device is manufactured using a semiconductor manufacturing process, and it is thus difficult to provide a large screen, but has come into widespread use as a display device for notebook computers. 
     An LCD is a non self-emitting device, and may include a liquid crystal panel and a backlight unit. The backlight unit is disposed below the liquid crystal panel, and is bonded with the liquid crystal panel via double-faced adhesive tape. 
       FIG. 1  is a schematic plane view of an optical adhesive film  100  according to an embodiment of the present invention.  FIG. 2  is a cross-sectional view taken along the line I-I of  FIG. 1 .  FIG. 3  is a cross-sectional view taken along the line II-II of  FIG. 1 . 
     Referring to  FIGS. 1 to 3 , the optical adhesive film  100  includes a transmission unit  110 , a first wing member  111 , a second wing member  112 , a third wing member  113 , first, second, and third light-shielding members  111   b ,  112   b , and  113   b , first, second, and third reflection members  111   c ,  112   c , and  113   c , and an adhesive member  114 . 
     The transmission unit  110  is disposed on a display region  10   a  of a flat panel display device  1000  illustrated in  FIGS. 4 and 5 . The transmission unit  110  may allow light emitted from the flat panel display device  1000  to transmit through. The transmission unit  110  may be formed of a material having high permeability to visible light. For example, the transmission unit  110  may be formed of a material such as polyethylene terephthalate (PET), a triacetyl cellulose (TAC) film, polyethylene (PE), acryl, or polyolefin. 
     The transmission unit  110  is disposed on a display region  10   a  of the flat panel display device  1000  and may thus have a shape corresponding to that of the display region  10   a . Referring to  FIGS. 4 and 5 , a flat panel display module  10  has a rectangular shape, and the transmission unit  110  of the optical adhesive film  100  may thus have a rectangular shape corresponding to the shape of the display region  10   a  of the flat panel display module  10 . 
     The first to third wing members  111  to  113  may extend from first to third side surfaces  110   a ,  110   b , and  110   c  of the transmission unit  110 , respectively. 
     When the first to third wing members  111  to  113  of the optical adhesive film  100  are folded, not only side portions of the flat panel display module  10  but also a portion of a rear surface of the flat panel display module  10  may be covered with the first to third wing members  111  to  113 . Specifically, when the first wing member  111  of the optical adhesive film  100  is folded, a side surface  10   c  of the flat panel display module  10  and a portion of the rear surface of the flat panel display module  10  are covered with the first wing member  111 . When the second wing  112  of the optical adhesive film  100  is folded, a side surface  10   d  of the flat panel display module  10  and a portion of the rear surface of the flat panel display module  10  are covered with the second wing member  112 . When the third side of the transmission unit  110  is folded, a top side surface  10   e  of the flat panel display module  10  and a portion of the rear surface of the flat panel display module  10  are covered with the third wing member  113 . Widths t 1 , t 2 , and t 3  of the first to third wing members  111  to  113  may be greater than a thickness of the flat panel display module  10 . 
     In the current embodiment, the optical adhesive film  100  covers the entire display region  10   a  of the flat panel display device  1000  and the side and portions of the rear surfaces of flat panel display module  10 , thereby improving adhesive strength between the constitutional elements of the flat panel display module  10 , as will be described in detail later. 
     The first wing member  111  may include a first base portion  111   a , the first light-shielding member  111   b , and the first reflection member  111   c . The second wing member  112  may include a second base portion  112   a , the second light-shielding member  112   b , and the second reflection member  112   c . The third wing member  113  may include a third base portion  113   a , the third light-shielding member  113   b , and the third reflection member  113   c.    
     That is, the first wing member  111  may include the first base portion  111   a , the first light-shielding member  111   b  on the first base portion  111   a , and the first reflection member  111   c  on the first light-shielding member  111   b.    
     The second wing member  112  may include the second base portion  112   a , the second light-shielding member  112   b  on the second base portion  112   a , and the second reflection member  112   c  on the second light-shielding member  112   b.    
     The third wing member  113  may include the third base portion  113   a , the third light-shielding member  113   b  on the third base portion  113   a , and the third reflection member  113   e  on the third light-shielding member  113   b.    
     The first to third base portions  111   a  to  113   a  may extend from the first to third side surfaces  110   a  to  110   c  of the transmission unit  110 , respectively. 
     The first to third base portions  111   a  to  113   a  may be formed of the same material as the transmission unit  110 . That is, the first to third base portions  111   a  to  113   a  may be formed of a material such as PET, a TAC film, PE, acryl, or polyolefin, similar to the transmission unit  110 . 
     The first to third light-shielding members  111   b  to  113   b  may be disposed on surfaces of the first to third base portions  111   a  to  113   a , respectively. For example, the first light-shielding member  111   b  may be disposed on the first base portion  111   a , the second light-shielding member  112   b  may be disposed on the second base portion  112   a , and the third light-shielding member  113  may be disposed on the third base portion  113   a . The first to third light-shielding members  111   b  to  113   b  may be formed of paint or pigment that absorbs light, and may be formed by applying such paint or pigment onto surfaces of the first to third base portions  111   a  to  113   a , respectively. The first to third light-shielding members  111   b  to  113   b  may absorb external light incident on a side surface of the flat panel display device  1000 . 
     The first to third reflection members  111   c  to  113   c  may be formed on the first to third light-shielding members  111   b  to  113   b , respectively. The first to third reflection members  111   c  to  113   c  may be formed of paint or pigment that reflects light, and may be formed by applying such paint or pigment onto the first to third light-shielding members  111   b  to  113   b , respectively. The first to third reflection members  111   c  to  113   c  are disposed facing the flat panel display module  10 , and reflect light emitted from the flat panel display module  10 , thereby preventing the light from leaking via a side surface of the flat panel display module  10 . 
     The adhesive member  114  may be disposed covering a surface of the transmission unit  110  and the first to third reflection members  111   c  to  113   c . The adhesive member  114  allows the optical adhesive film  100  to be adhered onto the flat panel display module  10 . 
     According to another embodiment of the present invention, the optical adhesive film  100  may be autohered to the flat panel display module  10  without having to use the adhesive member  114 . Here, autohesion is a type of adhesion whereby two types of polymers and an inorganic surface are united with each other by not using tacks therebetween but using the force of surface energy, for example, via wetting, magnetism, or electric charges. According to another embodiment of the present invention, the optical adhesive film  100  may be autohered to the flat panel display module  10  due to surface energy therebetween. That is, the transmission unit  110  of the optical adhesive film  100  may be autohered to a front surface of the flat panel display module  10 , and the first to third wing members  111  to  113  may be autohered not only to side surfaces of the flat panel display module  10  but also to a portion of the rear surface of the flat panel display module  10 . 
       FIG. 4  is a schematic exploded perspective view of the flat panel display device  1000  that includes the optical adhesive film  100  of  FIG. 1 , according to an embodiment of the present invention.  FIG. 5  is a schematic perspective view of the flat panel display device  1000  of  FIG. 4 . 
     Referring to  FIGS. 4 and 5 , the flat panel display device  1000  includes the flat panel display module  10  and the optical adhesive film  100 . 
     The flat panel display module  10  may be a liquid crystal display device or an organic light-emitting diode display device. 
     The optical adhesive film  100  may be adhered onto a front surface of the flat panel display module  10 . More specifically, the flat panel display module  10  may include the display region  10   a  for displaying an image, and a pad region  10   b  to connect to an external circuit (not shown). The transmission unit  110  of the optical adhesive film  100  is disposed correspondingly on the display region  10   a  of the flat panel display module  10 . The first to third wing members  111  to  113  may be bonded with the flat panel display module  10  and cover side portions and a portion of a rear surface of the flat panel display module  10 . Specifically, the first wing member  111  is bonded with the flat panel display module  10  to cover the side surface  10   c  and a portion of the rear surface of the flat panel display module  10 . The second wing member  112  is bonded with the flat panel display module  10  to cover the side surface  10   d  and a portion of the rear surface of the flat panel display module  10 . The third wing member  113  is bonded with the flat panel display module  10  and covers the top side surface  10   e  and a portion of the rear surface of the flat panel display module  10 . The first to third wing members  111  to  113  may be bonded with the side and rear surfaces of the flat panel display module  10  in the form of ‘C’. 
     However, no wing member is formed at a bottom side of the transmission unit  110  (which corresponds to a bottom side surface  110   d  of  FIG. 1 ), and the transmission unit  110  is disposed to correspond to the display region  10   a  of the flat panel display module  10 . Accordingly, the optical adhesive film  100  is not disposed on the pad region  10   b  of the flat panel display module  10 , and the pad region  10   b  is exposed. 
     If the flat panel display module  10  is a liquid crystal display device, conventionally, a liquid crystal panel and a backlight unit are bonded with each other by adhering a double-faced tape onto a rear surface of the liquid crystal panel and a front surface of the backlight unit. However, the optical adhesive film  100  according to the current embodiment may be adhered onto all of a front surface (which corresponds to the display region  10   a  of  FIGS. 4 and 5 ) and side and rear surfaces of the liquid crystal display device with the transmission unit  110  and the first to third wing members  111  to  113 , thereby improving adhesive strength between the liquid crystal panel and the backlight unit. 
     The first, second, and third light-shielding members  111   b ,  112   b , and  113   b  and the first to third reflection members  111   c  to  113   c  are stacked on surfaces of the first to third wing members  111  to  113 , and the first to third reflection members  111   c  to  113   c  are disposed facing the flat panel display module  10 . Thus, light emitted from a side surface of the flat panel display module  10  is reflected by the first to third reflection members  111   c  to  113   c , thereby preventing light from leaking via the side surface of the flat panel display module  10 . 
     Furthermore, since the first to third light-shielding members  111   c  to  113   c  are disposed between the first to third reflection members  111   c  to  113   c  and the first to third base portions  111   a  to  113   a , the first to third light-shielding members  111   c  to  113   c  may prevent external light from being incident into the flat panel display module  10 . 
     Since the first to third wing members  111  to  113  extend to, and are bonded with, the side and rear surfaces of the flat panel display module  10 , foreign substances or moisture may be prevented from entering the flat panel display device  1000  via a side surface of the flat panel display module  10 . 
     According to another embodiment of the present invention, the flat panel display device  1000  may be autohered to the optical adhesive film  100  and the flat panel display module  10  without having to use an additional member, e.g., an adhesive member, between the optical adhesive film  100  and the flat panel display module  10 . In this case, the optical adhesive film  100  includes the transmission unit  110  and the first to third wing members  111 ,  112 , and  113 . The transmission unit  110  is autohered to the front surface of the flat panel display module  10 , and the first to third wing members  111  to  113  is autohered to not only side surfaces of the flat panel display module  10  but also a portion of the rear surface of the flat panel display module  10 . The first wing member  111  may include the first base portion  111   a , the first light-shielding member  111   b , and the first reflection member  111   c . The second wing member  112  may include the second base portion  112   a , the second light-shielding member  112   b , and the second reflection member  112   c . The third wing member  113  may include the third base portion  113   a , the third light-shielding member  113   b , and the third reflection member  113   c . Since the first to third reflection members  111   c  to  113   c  contact the side and rear surfaces of the flat panel display module  10 , the first to third reflection members  111   c  to  113   c  are autohered to the side and rear surfaces of the flat panel display module  10 . 
       FIG. 6  is a cross-sectional view of a portion of the flat panel display device  1000  of  FIG. 4 . In detail,  FIG. 6  illustrates a case where the flat panel display module  10  is a liquid crystal display device (hereafter the flat panel display module  10  will be referred to as the liquid crystal display device  10 ). The liquid crystal display device  10  may include a backlight unit  11 , a polarizing plate  13 , and a liquid crystal panel  12 . The polarizing plate  13  may be disposed between the backlight unit  11  and the liquid crystal panel  12 . In other words, the liquid crystal display device  10  may have a structure in which the polarizing plate  13  and the liquid crystal panel  12  are sequentially stacked on the flat panel display module  10 . 
     The transmission unit  110  of the optical adhesive film  100  may be disposed on a front surface of the liquid crystal panel  12 , and is bonded with the front surface of the liquid crystal panel  12  via the adhesive member  114 . The first wing member  111  may extend from a side surface of the transmission unit  110 , and may be bonded with a side surface and a portion of a rear surface of the liquid crystal panel  12  via the adhesive member  114 . As described above, in the current embodiment, the optical adhesive film  100  is adhered onto the liquid crystal display device  10  to cover the front, side, and rear surfaces of the liquid crystal display device  10 . 
     The transmission unit  110  is bonded with the front surface of the liquid crystal panel  12 , and is formed of a material having high permeability to visible light. Thus, an image, output via the liquid crystal panel  12 , may be displayed through the transmission unit  110 . 
     In the optical adhesive film  100  according to the current embodiment, the adhesive member  114  is disposed on front surfaces of the transmission unit  110  and the first wing member  111 . The optical adhesive film  100  according to the current embodiment may be adhered onto all of a front surface (which corresponds to the display region  10   a  of  FIGS. 4 and 5 ) and side and rear surfaces of the liquid crystal display device  10  with the transmission unit  110  and the first to third wing members  111  to  113 , thereby improving an adhesive strength between the liquid crystal panel  12  and the backlight unit  11  of the liquid crystal display device  10 . 
     The first wing member  111  may include the first base portion  111   a , the first light-shielding member  111   b , and the first reflection member  111   c . The first base portion  111   a  extends from a side surface of the transmission unit  110 . The first light-shielding member  111   b  and the first reflection member  111   c  are stacked on the first base portion  111   a . Then, the adhesive member  114  is disposed on the first reflection member  111   c.    
     The first reflection member  111   c  is disposed facing the liquid crystal display device  10 , and reflects light emitted from the liquid crystal display device  10 , thereby preventing the light from leaking to the outside. The first reflection member  111   c  may be disposed to correspond to the side and rear surfaces of the liquid crystal display device  10 . 
     The first light-shielding member  111   b  is disposed covering an outer surface of the first reflection member  111   c , and absorbs external light from the outside, thereby preventing the external light from being incident into the liquid crystal display device  10 . The first light-shielding member  111   b  may be disposed on, not only the side and rear surfaces of the liquid crystal display device  10 , but also on a portion of the front surface of the liquid crystal display device  10 . 
     A polarizing film  14  may be disposed on the transmission unit  110 . 
       FIG. 7  is a cross-sectional view of a flat panel display device  2000  according to another embodiment of the present invention. Referring to  FIG. 7 , the flat panel display device  2000  may include a liquid crystal display device  20  and an optical adhesive film  200 . 
     The liquid crystal display device  20  may have a structure, in which a backlight unit  21 , a polarizing plate  23 , a liquid crystal panel  22 , and a polarizing film  24  are sequentially stacked. The optical adhesive film  200  may include a transmission unit  210 , a first wing member  211 , and an adhesive member  214 . 
     The transmission unit  210  of the optical adhesive film  200  may be bonded with the polarizing film  24  on the liquid crystal panel  22  via the adhesive member  214 . The first wing member  211  may extend from a side surface of the transmission unit  210 , and may be bonded with a side surface and a portion of a rear surface of the liquid crystal display device  20  via the adhesive member  214 . As described above, the optical adhesive film  200  may be adhered onto the liquid crystal display device  10  to cover all of a front surface and the side and rear surfaces of the liquid crystal display device  20 , thereby improving adhesive strength between the constitutional elements of the liquid crystal display device  20 . 
     The transmission unit  210  is adhered onto the entire liquid crystal panel  22 , and is formed of a material having high permeability to visible light, as described above. Thus, an image, output via the liquid crystal panel  22 , may be displayed by using the transmission unit  210 . 
     In the optical adhesive film  200 , the adhesive member  214  is disposed over the transmission unit  210  and the first wing member  211 . 
     The first wing member  211  may include a base portion  211   a , a light-shielding member  211   b , and a reflection member  211   c . The base portion  211   a  extends from a side surface of the transmission unit  210 . The light-shielding member  211   b  and the reflection member  211   c  are stacked on the base portion  211   a.    
     The reflection member  211   c  is disposed facing the liquid crystal display device  20 , and reflects light emitted from the liquid crystal display device  20 , thereby preventing the light from leaking to the outside. The reflection member  211   c  may be disposed to correspond to the side and rear surfaces of the liquid crystal display device  20 . 
     The light-shielding member  211   b  is disposed covering an outer surface of the reflection member  211   c , and absorbs external light from the outside, thereby preventing the external light from being incident into the liquid crystal display device  20 . The light-shielding member  211   b  may be wider than the reflection member  211   c . The reflection member  211   c  is disposed on the base portion  211   a  to cover the side and rear surfaces of the liquid crystal display device  20 , but the light-shielding member  21  lb may be disposed on not only the side and rear surfaces of the liquid crystal display device  10  but also on the front surface of the liquid crystal display device  20 . 
       FIG. 8  is a cross-sectional view of a flat panel display device  3000  according to another embodiment of the present invention. Referring to  FIG. 8 , the flat panel display device  3000  may include a liquid crystal display device  30  and an optical adhesive film  300 . 
     The liquid crystal display device  30  may have a structure, in which a chassis  35 , a backlight unit  31 , a polarizing plate  33 , a liquid crystal panel  32 , and a polarizing film  34  are sequentially stacked. The optical adhesive film  300  may include a transmission unit  310 , a wing member  311 , and an adhesive member  314 . 
     The transmission unit  310  of the optical adhesive film  300  is bonded with the polarizing film  34  on the liquid crystal panel  32  via the adhesive member  314 . The wing member  311  may extend from a side surface of the transmission unit  310 , and may be bonded with a side surface and a portion of a rear surface of the liquid crystal display device  30  via the adhesive member  314 . That is, the wing member  311  may extend to a rear surface of the chassis  35  and may be bonded with the rear surface of the chassis  35  via the, adhesive member  314 . 
     As described above, the optical adhesive film  300  is adhered onto the liquid crystal display device  30  to cover the front, side, and rear surfaces of the liquid crystal display device  30 , thereby improving adhesive strength between the constitutional elements of the liquid crystal display device  30 . 
     The transmission unit  310  is bonded with the entire liquid crystal panel  32 , and is formed of a material having high permeability to visible light. Thus, an image output via the liquid crystal panel  32  may be displayed using the transmission unit  310 . 
     In the optical adhesive film  300 , the adhesive member  314  is disposed over the transmission unit  310  and the wing member  311 . 
     The wing member  311  may include a base portion  311   a , a light-shielding member  311   b , and a reflection member  311   c . The base portion  311   a  extends from a side surface of the transmission unit  310 . The light-shielding member  311   b  and the reflection member  311   c  are stacked on the base portion  311   a.    
     The reflection member  311   c  is disposed facing the liquid crystal display device  30 , and reflects light emitted from the liquid crystal display device  30 , thereby preventing the light from leaking to the outside. The reflection member  311   c  may be disposed to correspond to the side and rear surfaces of the liquid crystal display device  30 . 
     The light-shielding member  311   b  is disposed covering an outer surface of the reflection member  311   c , and absorbs external light from the outside, thereby preventing the external light from being incident into the liquid crystal display device  30 . The light-shielding member  311   b  may be wider than the reflection member  311   c . The reflection member  311   c  is disposed on the base portion  311   a  to cover the side and rear surfaces of the liquid crystal display device  30 , but the light-shielding member  311   b  may be disposed on all the side, rear, and front surfaces of the liquid crystal display device  30 . 
       FIG. 9  is a cross-sectional view of a flat panel display device  4000  according to another embodiment of the present invention. Referring to  FIG. 9 , the flat panel display device  4000  may include a liquid crystal display device  40  and an optical adhesive film  400 . 
     The liquid crystal display device  40  may have a structure, in which a chassis  45 , a backlight unit  41 , a polarizing plate  43 , a liquid crystal panel  42 , a polarizing film  44 , and a touch panel  47  are sequentially stacked. The optical adhesive film  400  may include a transmission unit  410 , a wing member  411 , and an adhesive member  414 . 
     The transmission unit  410  of the optical adhesive film  400  may be bonded with the touch panel  47  on the liquid crystal panel  32  via the adhesive member  414 . The wing member  411  may extend from a side surface of the transmission unit  410 , and may be bonded with the side surface and a portion of a rear surface of the liquid crystal display device  40  via the adhesive member  414 . That is, the wing member  411  may extend to a rear surface of the chassis  45  and may be bonded with the rear surface of the chassis  45  via the adhesive member  414 . 
     As described above, the optical adhesive film  400  is adhered onto the liquid crystal display device  40  to cover all the front, side, and rear surfaces of the liquid crystal display device  40 , thereby improving adhesive strength between the constitutional elements of the liquid crystal display device  40 . 
     The transmission unit  410  is bonded with the entire liquid crystal panel  42 , and is formed of a material having high permeability to visible light. Thus, an image output via the liquid crystal panel  42  may be displayed using the transmission unit  410 . 
     In the optical adhesive film  400 , the adhesive member  414  is disposed over the transmission unit  410  and the wing member  411 . 
     The wing member  411  may include a base portion  411   a , a light-shielding member  411   b , and a reflection member  411   c . The base portion  411   a  extends from a side surface of the transmission unit  410 . The light-shielding member  411   b  and the reflection member  411   c  are stacked on the base portion  411   a.    
     The reflection member  411   c  is disposed facing the liquid crystal display device  40 , and absorbs light emitted from the liquid crystal display device  40 , thereby preventing the light from leaking to the outside. The reflection member  411   c  may be disposed to correspond to the side and rear surfaces of the liquid crystal display device  40 . 
     The light-shielding member  411   b  may be disposed covering an outer surface of the reflection member  411   c , and may absorb external light from the outside, thereby preventing the external light from being incident into the liquid crystal display device  40 . The light-shielding member  411   b  may be wider than the reflection member  411   c . The reflection member  411   c  is disposed on the base portion  411   a  to cover the side and rear surfaces of the liquid crystal display device  40 , but the light-shielding member  411   b  may be disposed on all the side, rear, and front surfaces of the liquid crystal display device  40 . 
     According to an embodiment of the present invention, an optical adhesive film is adhered onto not only a front surface of a flat panel display module but also side and rear surfaces of the flat panel display module, thereby improving adhesive strength between the constitutional elements of the flat panel display module. 
     While this invention has been particularly shown and described with reference to exemplary embodiments thereof, 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 invention as defined by the appended claims.

Technology Classification (CPC): 6