Patent Publication Number: US-2019196262-A1

Title: Display apparatus including heat dissipating part

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2017-0181474, filed on Dec. 27, 2017, the disclosure of which is incorporated by reference herein in its entirety. 
     TECHNICAL FIELD 
     Exemplary embodiments of the present inventive concept relate to a display apparatus. More particularly, exemplary embodiments of the present inventive concept relate to a display apparatus including a heat dissipating part. 
     DISCUSSION OF THE RELATED ART 
     Display apparatuses having a relatively light weight and small size have been under development. A cathode ray tube (CRT) display apparatus had been widely used due to a performance and a competitive price. However, the CRT display apparatus is heavy and is not portable. Therefore, a display apparatus such as a plasma display apparatus, a liquid crystal display apparatus and an organic light emitting display apparatus have become more popular. 
     In the liquid crystal display apparatus, a voltage is applied to liquid crystal molecules to change an arrangement of the liquid crystal molecules. The liquid crystal display apparatus displays an image due to changes of optical properties (for example, birefringence, rotatory polarization, dichroism and light scattering) of a liquid crystal cell according to the changes of the arrangement of the liquid crystal molecules. 
     SUMMARY 
     According to an exemplary embodiment of the present inventive concept, a display apparatus includes a display panel and a light guiding plate disposed under the display panel, and including a light exiting surface and a light incidence surface. The light exiting surface faces the display panel. The display apparatus further includes a first adhesive member disposed between the display panel and the light guiding plate. The display apparatus additionally includes a heat dissipating part disposed under the display panel, and including a first portion extending parallel with the display panel, a second portion extending from the first portion in a direction perpendicular to the first portion, and a third portion extending from the second portion and parallel with the first portion. The heat dissipating part faces the light incidence surface. The display apparatus further includes a second adhesive member disposed between the display panel and the first portion of the heat dissipating part, and a first light source part disposed in the heat dissipating part and configured to provide light to the light incidence surface of the light guiding plate. 
     In an exemplary embodiment of the present inventive concept, the display apparatus further includes a substrate. The first light source part is mounted on the substrate. The display apparatus additionally includes a third adhesive member disposed between the substrate and the second portion of the heat dissipating part. 
     In an exemplary embodiment of the present inventive concept, the substrate is spaced apart from the first portion, and makes contact with the third portion. 
     In an exemplary embodiment of the present inventive concept, the first light source part includes a light-emitting diode (LED) and a mold disposed on the substrate. The LED is disposed on the mold. 
     In an exemplary embodiment of the present inventive concept, the substrate extends parallel to the first portion, and the display apparatus further includes a second light source part disposed on the substrate. 
     In an exemplary embodiment of the present inventive concept, the light guiding plate is adjacent to the heat dissipating part. 
     In an exemplary embodiment of the present inventive concept, the first adhesive member is disposed along an edge of the light exiting surface of the light guiding plate, and the light exiting surface of the light guiding plate, a lower surface of the display panel and the first adhesive member form a receiving space. 
     In an exemplary embodiment of the present inventive concept, the receiving space is sealed by the first adhesive member. 
     In an exemplary embodiment of the present inventive concept, the display apparatus further includes an optical sheet disposed in the receiving space. 
     In an exemplary embodiment of the present inventive concept, the optical sheet includes a quantum dot (QD) sheet. 
     In an exemplary embodiment of the present inventive concept, a quantum dot (QD) layer is disposed on an upper surface of the light guiding plate. 
     In an exemplary embodiment of the present inventive concept, the first adhesive member includes a foam tape having adhesive layers formed on both surfaces thereof. 
     In an exemplary embodiment of the present inventive concept, the heat dissipating part includes aluminum or graphite. 
     In an exemplary embodiment of the present inventive concept, an opening is formed in the second portion. 
     In an exemplary embodiment of the present inventive concept, an opening is formed in the third portion. 
     In an exemplary embodiment of the present inventive concept, an opening is formed in the first portion. 
     In an exemplary embodiment of the present inventive concept, the second adhesive member is a double-sided tape. 
     According to an exemplary embodiment of the present inventive concept, a display apparatus includes a display panel and a light guiding plate disposed on the display panel, and including a light exiting surface facing the display panel and a light incidence surface. The display apparatus further includes a first adhesive member disposed between the display panel and the light guiding plate, and a heat dissipating part disposed on the display panel. The display apparatus additionally includes a second adhesive member disposed between the display panel and a first portion of the heat dissipating part, and a substrate disposed on the heat dissipating part. The display apparatus further includes a light source part disposed on the substrate and configured to provide light to the light incidence surface of the light guiding plate, and a third adhesive member disposed between the light source part substrate and the heat dissipating part. 
     According to an exemplary embodiment of the present inventive concept, a display apparatus includes a display panel, and a light guiding plate disposed on the display panel, the light guiding plate including a light exiting surface, which faces the display panel, and a light incidence surface, which faces away from the display panel. The display apparatus further includes a heat dissipating part disposed under the display panel, and including a first portion parallel to the display panel, a second portion extending from the first portion in a direction perpendicular to the first portion, and a third portion extending from the second portion and parallel to the first portion. The heat dissipating part faces the light incidence surface, and at least one of the first portion, second portion or third portion includes a plurality of openings. The display apparatus additionally includes a first light source part disposed in the heat dissipating part and configured to provide light to the light incidence surface of the light guiding plate. 
     In an exemplary embodiment of the present inventive concept, the second portion includes the plurality of openings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete appreciation of the present disclosure and many of the attendant aspects thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawing, wherein: 
         FIG. 1  is an exploded perspective view illustrating a display apparatus according to an exemplary embodiment of the present inventive concept; 
         FIG. 2  is a cross-sectional view illustrating the display apparatus of  FIG. 1  according to an exemplary embodiment of the present inventive concept; 
         FIG. 3  is a perspective view illustrating a heat dissipating part of a display apparatus according to an exemplary embodiment of the present inventive concept; 
         FIG. 4  is a cross-sectional view illustrating the display apparatus of  FIG. 3  according to an exemplary embodiment of the present inventive concept; 
         FIG. 5  is a perspective view illustrating a heat dissipating part of a display apparatus according to an exemplary embodiment of the present inventive concept; 
         FIG. 6  is a cross-sectional view illustrating the display apparatus of  FIG. 5  according to an exemplary embodiment of the present inventive concept; 
         FIG. 7  is a perspective view illustrating a heat dissipating part of a display apparatus according to an exemplary embodiment of the present inventive concept; and 
         FIG. 8  is a cross-sectional view illustrating the display apparatus of  FIG. 7  according to an exemplary embodiment of the present inventive concept. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Exemplary embodiments of the present inventive concept will be described more fully hereinafter with reference to the accompanying drawings. 
       FIG. 1  is an exploded perspective view illustrating a display apparatus according to an exemplary embodiment of the present inventive concept.  FIG. 2  is a cross-sectional view illustrating the display apparatus of  FIG. 1  according to an exemplary embodiment of the present inventive concept. 
     Referring to  FIG. 1 , the display apparatus may include a display panel  100 , a light guiding plate  200 , a light guiding plate adhesive member  210 , a heat dissipating part  300 , a heat dissipating part adhesive member  310 , a light source part substrate  400 , a light source part  410 , a light source part adhesive member  420 , and an optical sheet  500 . 
     The display panel  100  may be arranged in parallel with a plane which is formed by a first direction D 1  and a second direction D 2  which is perpendicular to the first direction D 1 . The display panel  100  may display an image using light from the light source part  410  according to a driving signal and a data signal applied from an external device. The display panel  100  may include an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer disposed between the array substrate and the opposite substrate. 
     The array substrate may include a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of switching element connected to the gate and data lines. The opposite substrate may include a black matrix blocking light and a color filter having a color. Although the opposite substrate includes the color filter in the present exemplary embodiment of the present inventive concept, the color filter may be formed in the array substrate. The liquid crystal layer may be disposed between the array substrate and the opposite substrate. The liquid crystal layer may include liquid crystal molecules that are optically anisotropic. The liquid crystal molecules may be driven by an electric field, and light may pass through or may be blocked by the liquid crystal layer to display an image. The display apparatus may further include an upper polarizing plate disposed on the display panel  100  and a lower polarizing plate disposed under the display panel  100 . 
     The light guiding plate  200  may be disposed under the display panel  100 . The light guiding plate  200  may be disposed adjacent to the heat dissipating part  300  in the first direction D 1 , and may guide the light generated from the light source part  410  toward the display panel  100 . For example, the light guiding plate  200  may change a path of the light generated from the light source part  410  by guiding the light generated from the light source part  410  toward the display panel  100 . The light guiding plate  200  may include a light incidence surface  202  facing the light source part  410 , and a light exiting surface  204  facing the display panel  100 . 
     Although the light guiding plate  200  has a uniform thickness in an exemplary embodiment of the present inventive concept, the light guiding plate  200  may have various shapes and/or a thickness that varies. For example, the light guiding plate  200  may have a wedge-shaped cross-section in which a thickness becomes thinner as a distance from the light source part  410  increases. 
     The light guiding plate  200  may be adhered to a lower surface of the display panel  100  by the light guiding plate adhesive member  210 . For example, the light guiding plate adhesive member  210  may be a double-sided tape such as a foam tape having adhesive layers formed on both surfaces thereof. For example, the light guiding plate adhesive member  210  may include a first adhesive layer adhered to the display panel  100 , a second adhesive layer adhered to the light guiding plate  200 , and a foam layer between the first adhesive layer and the second adhesive layer. However, the present inventive concept is not limited thereto. 
     Although the light guiding plate adhesive member  210  is described as being adhered to the display panel  100  and the light guiding plate  200  in an exemplary embodiment of the present inventive concept, the light guiding plate adhesive member  210  may have a pressure sensitive adhesive property instead of the adhesive property. For example, the light guiding plate adhesive member  210  may be a pressure sensitive adhesive member. 
     In addition, in an example embodiment of the present inventive concept, the light guiding plate adhesive member  210  may be a layer including, for example, adhesive silicone, urethane or the like. 
     The light guiding plate adhesive member  210  may be disposed along an edge of the light exiting surface  204  of the light guiding plate  200 , and the light exiting surface  204  of the light guiding plate  200 , the lower surface of the display panel  100  and the light guiding plate adhesive member  210  may form a receiving space. For example, the display panel  100  is disposed on the light guiding plate adhesive member  210 , and the receiving space is formed between the display panel  100  and the light exiting surface  204 . 
     The receiving space may be sealed to the outside by the light guiding plate adhesive member  210 . As a result, elements and/or components (for example, the optical sheet  500 ) disposed in the receiving space may be separated from outside air or other external elements, so that damage due to infiltration of the outside air in the elements described above may be prevented. 
     The heat dissipating part  300  may prevent heat generated from the light source part  410  from being transmitted to the display panel  100  to deteriorate configurations of pixels and the like of the display panel  100 . The heat dissipating part  300  may include a material having a relatively high thermal conductivity. For example, the heat dissipating part  300  may include aluminum and/or graphite. In addition, the heat dissipating part  300  may attach and fix the light source part  410  and the light source part substrate  400  to the display panel  100 . 
     The heat dissipating part  300  may be disposed under the display panel  100 . The heat dissipating part  300  may include a first portion  301  which extends parallel with the display panel  100 , a second portion  302  extending from the first portion  301  in a direction perpendicular to the display panel  100  and to the first portion  301  (e.g., in a direction opposite to the third direction D 3 ) and a third portion  303  extending from the second portion  302  in parallel with the display panel  100  and the first portion  301 . A cross-section of the heat dissipating part  300  may have a shape that is similar to a “C shape”. For example, the heat dissipating part  300  includes an opening. The heat dissipating part  300  may face the light incidence surface  202  of the light guiding plate  200 . As an additional example, the opening of the heat dissipating part  300  may face the light incidence surface  202 . 
     The heat dissipating part adhesive member  310  may be disposed between the display panel  100  and the first portion  301  of the heat dissipating part  300 , and may attach the first portion  301  of the heat dissipating part  300  to the display panel  100 . The heat dissipating part adhesive member  310  may be a double-sided tape such as a foam tape having adhesive layers formed on both surfaces thereof. 
     The light source part substrate  400  may be disposed in the heat dissipating part  300 . The light source part substrate  400  may be an insulation substrate or a flexible insulation substrate. The light source part substrate  400  may include, for example, a metal pattern for driving the light source part  410  formed thereon. The light source part substrate  400  may extend in the second direction D 2 . For example, a plurality of the light source parts  410  may be arranged along the light source part substrate  400  in the second direction D 2 . 
     The light source part  410  is mounted on the light source part substrate  400  and the light source part  410  may include a mold  412  and a light-emitting diode (LED)  414 . 
     The mold  412  may be formed using a resin, and the resin may be, for example, a Polyphtalamide resin(PPA) and/or Polycyclomethylene terephthalate resin(PCT) and the like. The mold  412  may include an opaque material to reflect the light received from the light source part  410 . 
     The LED  414  may be an LED chip (light emitting diode chip) for generating the light. The light from the LED  414  may be incident into the light incidence surface  202  of the light guiding plate  200 . The LED  414  may be disposed on the light source part substrate  400  and electrically connected to the metal pattern formed on the light source part substrate  400 . 
     Here, the light source part substrate  400  may be spaced from the first portion  301  of the heat dissipating part  300  and may be in contact with the third portion  303 . 
     The light source part substrate  400  may be spaced from the first portion  301  of the heat dissipating part  300  and may be in contact with the third portion  303 . Accordingly, heat generated from the light source part  410  may be transmitted to the third portion  303  of the heat dissipating part  300 , which is located farther from the display panel  100  than the first portion  301  is and is in contact with the light source part substrate  400 , so that the heat may dissipate to the outside and away from the display panel  100 . 
     The light source part  410  may further include a fluorescent layer or the like disposed on the LED  414  to increase light efficiency. 
     The light source part adhesive member  420  may be disposed between the light source part substrate  400  and the heat dissipating part  300  to attach the light source part substrate  400  to the heat dissipating part  300 . For example, the light source part adhesive member  420  may be disposed between the second portion  302  of the heat dissipating part  300  and the light source part substrate  400 . The light source part adhesive member  420  may be a double-sided tape. 
     The optical sheet  500  may be received in the receiving space formed by the light guiding plate adhesive member  210 . For example, the optical sheet  500  may be disposed between the display panel  100  and the light guiding plate  200 . The receiving space may be sealed by the light guiding plate adhesive member  210 , so that damage due to infiltration of the outside air or other external elements in the elements described above may be prevented. 
     The optical sheet  500  may increase efficiency of the light from the light guiding plate  200 . For example, the optical sheet  500  may make the brightness of the light emitted from the light guiding plate  200  uniform. The optical sheet  500  may include a plurality of optical sheets. For example, the optical sheet  500  may include a protective sheet, a prism sheet, a diffusion sheet, and/or a quantum dot (QD) sheet which includes a quantum dot. 
     The quantum dot may be a material that has a nano-scaled structure and may include several hundred to several thousand atoms. Since the quantum dot is relatively very small in size, a quantum confinement effect may occur. The quantum confinement effect may indicate that an energy band gap of an object is increased when the object becomes smaller than nano size. When the light having energy higher than that of the band gap is incident to the quantum dot, the quantum dot may absorb the light and may emit a second light having a predetermined wavelength and an energy level in the ground state. The wavelength of the emitted second light may have a value corresponding to the band gap. When a size and a composition of the quantum dot are adjusted, the emission property of the quantum dot may be controlled by the quantum confinement. 
     The composition of the quantum dots is not limited to a specific composition, and any suitable composition may be used. For example, the quantum dot may be a quantum dot of, for example, Group II-VI elements, Group III-V elements, Group IV elements, or Group IV-VI elements. The Group II elements may include, for example, zinc, cadmium, and/or mercury. The group III elements may include, for example, aluminum, gallium, and/or indium. The Group IV elements may include, for example, silicon, germanium, tin, and/or lead. The Group V elements may include, for example, nitrogen, phosphorus, and/or arsenic. The Group VI elements may include, for example, sulfur, selenium, and/or tellurium. 
     For example, the QD sheet may include a plurality of light-converting fibers and a polymer layer. Each of the light-converting fibers may include a base fiber and a plurality of the quantum dots embedded in the base fiber. The base fiber may include an inorganic material. The inorganic material may have an optical transparency property. 
     The light-converting fibers may be laminated while crossing each other to form a network (e.g., a web shape). The light conversion fibers may be formed through an, for example, electrospinning method. 
     The light-converting fibers may be embedded in the polymer layer. For example, the polymer layer may be disposed to cover the light-converting fibers. The base fibers may be fixed to the polymer layer so that the network shape of the light-converting fibers may be maintained by the polymer layer. 
     The configuration of the optical sheet  500  is not limited thereto, and may be variously configured. 
     In an exemplary embodiment of the present inventive concept, instead of the optical sheet  500  including the QD sheet, a QD layer may be formed on the upper surface of the light guiding plate  200  corresponding to the receiving space. The QD layer may include the quantum dot. 
     According to an exemplary embodiment of the present inventive concept, the display apparatus may include a display panel  100 , and a light guiding plate  200  disposed under the display panel  100  and including a light exiting surface  204  which faces the display panel  100  and a light incidence surface  202 . The display apparatus may further include a light guiding plate adhesive member  210  disposed between the display panel  100  and the light guiding plate  200  to attach the light guiding plate  200  to the display panel  100 , and a heat dissipating part  300  disposed under the display panel  100 . The heat dissipating part  300  may include a first portion  301  which extends parallel with the display panel  100 , a second portion  302  which extends from the first portion  301  in a direction perpendicular to the display panel  100 , and a third portion  303  which extends from the second portion  302  in parallel with the display panel  100  In addition, a cross-section of the heat dissipating part  300  may have a “C shape”, and the heat dissipating part  300  may be disposed to face the light incidence surface  202 . The display apparatus may additionally include a heat dissipating part adhesive member  310  disposed between the display panel  100  and the first portion  301  of the heat dissipating part  300  to attach the first portion  301  of the heat dissipating part  300  to the display panel  100 , and a light source part  410  disposed in the heat dissipating part  300  to provide light to the light incidence surface  202  of the light guiding plate  200 . 
     Accordingly, the heat generated from the light source part  410  may be discharged through the heat dissipating part  300  to prevent the heat from being transmitted to the display panel  100  which may deteriorate the elements of the pixels and the like of the display panel  100 . 
     Here, the light source part substrate  400  on which the light source part  410  is mounted may be spaced apart from the first portion  301  of the heat dissipating part  300  and may be in contact with the third portion  303 . Accordingly, heat generated from the light source part  410  may be transmitted to the third portion  303  of the heat dissipating part  300 , which is located farther from the display panel  100  and is in contact with the light source part substrate  400 , so that the heat may dissipate to the outside. 
     In addition, the display panel  100  and the light source part  410 , which may be, for example, a backlight assembly, and the light guiding plate  200  may be fixed to each other without an additional container or housing. Accordingly, the display apparatus may be easy to handle, and its thickness and size may be reduced. 
     In addition, a receiving space formed by the light guiding plate adhesive member  210 , the display panel  100 , and the light guiding plate  200  may be sealed to outside by a light guiding plate adhesive member  210 , so that damage due to infiltration of the outside air or other external elements in elements or components disposed in the receiving space (for example, an optical sheet  500 ) may be prevented. 
       FIG. 3  is a perspective view illustrating a heat dissipating part of a display apparatus according to an exemplary embodiment of the present inventive concept.  FIG. 4  is a cross-sectional view illustrating the display apparatus of  FIG. 3  according to an exemplary embodiment of the present inventive concept. The display apparatus may be substantially the same as the display apparatus of  FIGS. 1 and 2 , except for a shape of a heat dissipating part  600 . Therefore, to the extent that the description of various elements may be omitted, it may be assumed that these omitted elements are at least similar to corresponding elements that have already been described. 
     Referring to  FIGS. 3 and 4 , the heat dissipating part  600  of the display apparatus may include a first portion  601  which extends parallel with a display panel  100 , a second portion  602  extending from the first portion  601  in a direction perpendicular to the display panel  100  and the first portion  601  (e.g., in a direction opposite to a third direction D 3 ) and a third portion  603  extending from the second portion  302  in parallel with the display panel  100 , and a cross-section of the heat dissipating part  600  may have a “C shape”. The heat dissipating part  600  may face a light incidence surface  202  of a light guiding plate  200 . 
     A plurality of openings H may be formed in the second portion  602 . Each opening H may be a heat sink hole for allowing heat generated from the light source part  410  to be emitted through the air along a first direction D 1  (e.g., in a direction opposite to a first direction D 1 ). A plurality of the openings H may be formed along the second direction D 2  in which the second portion  602  extends. Although four openings are shown in  FIG. 3  along the second direction D 2 , the number and position of the openings H is not limited thereto. For example, the number and position of the openings H may be variously changed. 
       FIG. 5  is a perspective view illustrating a heat dissipating part of a display apparatus according to an exemplary embodiment of the present inventive concept.  FIG. 6  is a cross-sectional view illustrating the display apparatus of  FIG. 5  according to an exemplary embodiment of the present inventive concept. The display apparatus may be substantially the same as the display apparatuses of  FIGS. 1 and 2 , except for a shape of the heat dissipating part  700 . Therefore, to the extent that the description of various elements may be omitted, it may be assumed that these omitted elements are at least similar to corresponding elements that have already been described. 
     Referring to  FIGS. 5 and 6 , the heat dissipating part  700  of the display apparatus may include a first portion  701  which extends parallel with a display panel  100 , a second portion  702  extending from the first portion  701  in a direction perpendicular to the display panel  100  and the first portion  701  (e.g., in a direction opposite to a third direction D 3 ) and a third portion  703  extending from the second portion  702  in parallel with the display panel  100 , and a cross-section of the heat dissipating part  700  may have a “C shape”. The heat dissipating part  700  may face a light incidence surface  202  of a light guiding plate  200 . 
     A plurality of openings H may be formed in the third portion  703 . Each opening H may be a heat sink hole for allowing heat generated from the light source part  210  to be emitted through the air along a first direction D 1  (e.g., in a direction opposite to the third direction D 3 ). A plurality of the openings H may be formed along the second direction D 2  in which the third portion  703  extends. Although four openings are shown in  FIG. 5  along the second direction D 2 , the number and position of the openings H is not limited thereto. For example, the number and position of the openings H may be variously changed. 
       FIG. 7  is a perspective view illustrating a heat dissipating part of a display apparatus according to an exemplary embodiment of the present inventive concept.  FIG. 8  is a cross-sectional view illustrating the display apparatus of  FIG. 7  according to an exemplary embodiment of the present inventive concept. 
     The display apparatus may be substantially the same as the display apparatuses of FIGS.  1  and  2 , except for a shape of the heat dissipating unit  800 . Therefore, to the extent that the description of various elements may be omitted, it may be assumed that these omitted elements are at least similar to corresponding elements that have already been described. 
     Referring to  FIGS. 7 and 8 , the heat dissipating part  800  of the display apparatus may include a first portion  801  which extends parallel with a display panel  100 , a second portion  802  extending from the first portion  801  in a direction perpendicular to the display panel  100  and the first portion  801  (e.g., in a direction opposite to a third direction D 3 ) and a third portion  803  extending from the second portion  802  in parallel with the display panel  100 , and a cross-section of the heat dissipating part  800  may have a “C shape”. The heat dissipating part  800  may face a light incidence surface  202  of a light guiding plate  200 . 
     A plurality of openings H may be formed in the first portion  801 . the plurality of the openings H may be formed along the second direction D 2  in which the first portion  801  extends. Although four openings are shown in the  FIG. 7  along the second direction D 2 , the number and position of the openings H is not limited thereto. For example, the number and position of the openings H may be variously changed. 
     Since the openings H are formed in the first portion  801 , an area of the heat dissipating part  800  contacting the display panel  100  through the heat dissipating part adhesive member  310  may be reduced. Accordingly, heat conducted to the display panel  100  through the heat dissipating part  800  may be minimized, and the heat may be emitted through the second portion  802  and the third portion  803  of the heat dissipating part  800 . 
     In an exemplary embodiment of the present inventive concept, the heat dissipating part  800  may include a plurality of openings H in the first portion  801  and in the second portion  802  and/or the third portion  803 . 
     According to an exemplary embodiment of the present inventive concept, the display apparatus includes a display panel, and a light guiding plate disposed under the display panel, and including a light exiting surface which faces the display panel and a light incidence surface. The display apparatus further includes a light guiding plate adhesive member disposed between the display panel and the light guiding plate to attach the light guiding plate to the display panel, and a heat dissipating part disposed under the display panel. The heat dissipating part includes a first portion which is parallel with the display panel, a second portion which extends from the first portion in a direction perpendicular to the display panel, and a third portion which extends from the second portion in parallel with the display panel, so that a cross-section of the heat dissipating part has a “C shape”, and the heat dissipating part is disposed to face the light incidence surface. The display apparatus additionally includes a heat dissipating part adhesive member disposed between the display panel and the first portion of the heat dissipating part to attach the first portion of the heat dissipating part to the display panel, and a light source part disposed in the heat dissipating part to provide light to the light incidence surface of the light guiding plate. 
     Accordingly, the heat generated from the light source part may be discharged through the heat dissipating part  300  to prevent the heat from being transmitted to the display panel to deteriorate pixels and the like of the display panel. 
     Here, the light source part substrate on which the light source part is mounted may be spaced apart from the first portion of the heat dissipating part and may be in contact with the third portion of the heat dissipating part. Accordingly, heat generated from the light source part may be transmitted to the third portion of the heat dissipating part, which is located farther from the display panel and is in contact with the light source part substrate, so that the heat may dissipate to the outside and away from the display panel. 
     In addition, the display panel and the light source part, as the backlight assembly, and the light guiding plate may be fixed to each other without an additional container or housing. Accordingly, the display apparatus may be easy to handle, and its thickness may be reduced. 
     In addition, a receiving space formed by the light guiding plate adhesive member, the display panel, and the light guiding plate may be sealed to outside by a light guiding plate adhesive member, so that damage due to infiltration of the outside air or other external elements in elements or components (for example, an optical sheet) of the display apparatus may be prevented. 
     In addition, an opening may be formed in the first portion, the second portion and/or the third portion of the heat dissipating part of the display apparatus. Thus, the heat transmitted to the display panel can be reduced. 
     While the present inventive concept has been 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 thereto without departing from the spirit and scope of the present inventive concept as defined by the following claims.