Patent Publication Number: US-2022225505-A1

Title: Display panel and display device having same

Description:
FIELD OF INVENTION 
     The present disclosure relates to display technology, and especially relates to a display panel and a display device having same. 
     BACKGROUND OF INVENTION 
     As shown in  FIG. 1 a   , in conventional large-size displays or high resolution displays, to prevent a circuit board bound to a binding area by a chip-on-film (COF) film from being excessively long and thus warping at both ends, the circuit board  11  on the binding area is generally divided into two circuit board sections. The two circuit board sections are then electrically connected. The electrical connections are mainly achieved by a flexible circuit board  12  and by connectors. 
     Technical Problem 
     As shown in  FIG. 1 b   . In prior arts, in order to cut costs, a control unit  13  is directly disposed on one of the circuit board sections. However, means for establishing connections between the circuit board sections are inconvenient. In addition, as shown in  FIG. 1 c   , in a curving process for manufacturing curved displays, to prevent display flaws caused by damage to the circuit board and the COF film, the circuit board is divided into a plurality of circuit board sections  14 . Electrical connections and signal transmissions are then achieved between the plurality of circuit board sections  14 . A process of connections is inconvenient and cumbersome. The connections need to be made by using multiple connectors and the flexible circuit boards  12 . Moreover, the manufacturing costs of this design are too high. 
     Therefore, it is necessary to provide a display panel and a display device having same to cut costs. 
     SUMMARY OF INVENTION 
     Solution to the Problem 
     Technical Solution 
     An object of the present disclosure is to provide a display panel to cut costs of manufacturing the display panel. 
     The present disclosure provides a display panel, comprising: a display area and a binding area; wherein in the binding area, the display panel comprises a plurality of COF films, wherein one end of the COF film is connected to the display area, and the other end of the COF film is connected to a circuit board; wherein the circuit board comprises at least one gap; and wherein the display panel is provided with a binding film at the gap, the binding film connects the circuit boards which are on both sides of the gap. 
     Further, the circuit boards include: a first circuit board, disposed at one side of the gap; and a second circuit board, disposed at the other side of the gap. 
     Further, a shape of the binding film is a rectangular shape; one end of the binding film is bound to an end of the first circuit board which is close to the gap; and the other end of the binding film is bound to an end of the second circuit board which is close to the gap. 
     Further, the circuit board is connected to a control unit. 
     Further, the second circuit board is integrated with a control module. 
     Further, the second circuit board comprises a projection disposed on a side of the second circuit board which is away from the display area; and wherein the control module is disposed on the projection. 
     Further, the shape of the binding film is a shape of a letter L; one end of the binding film is bound to a side of the first circuit board which is away from the display area; and the other end of the binding film is bound to the end of the second circuit board which is close to the gap. 
     Further, the first circuit board comprises a first projection disposed at the end of the first circuit board which is close to the gap; the second circuit board comprises a second projection disposed at the end of the second circuit board which is close to the gap. 
     Further, one end of the binding film is bound to the first circuit board and to the first projection; the other end of the binding film is bound to the second circuit board and to the second projection. 
     The present disclosure also provides a display device, comprising the said display panel. 
     Beneficial Effects 
     The beneficial effects of the present disclosure are: the present disclosure provides a display panel. By disposing the binding film over the gap between the adjacent circuit boards, and then forming connection wires on the binding film, the connections between the different circuit boards are achieved. The present disclosure solves a problem of high costs caused by traditional flexible circuit boards and connectors, thereby saving a large number of connectors and flexible circuit boards, and thereby significantly reducing costs. 
    
    
     
       DESCRIPTION OF DRAWINGS 
       Brief Description of Drawings 
       In order to clearly illustrate the embodiments of the present disclosure, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description merely show some of the embodiments of the present disclosure. As regards one of ordinary skill in the art, other drawings may be obtained in accordance with these accompanying drawings without making creative efforts. 
         FIG. 1 a    is a schematic plan view of a display panel according to prior arts; 
         FIG. 1 b    is a schematic plan view of another display panel according to prior arts; 
         FIG. 1 c    is a schematic plan view of a curved display panel according to prior arts; 
         FIG. 2  is a schematic plan view of a display panel according to embodiment 1 of the present disclosure; 
         FIG. 3  is a schematic plan view of a display panel according to embodiment 2 of the present disclosure; 
         FIG. 4  is a schematic plan view of a display panel according to embodiment 3 of the present disclosure; and 
         FIG. 5  is a schematic plan view of a display panel according to embodiment 4 of the present disclosure. 
     
    
    
     Reference numbers of elements presented in the drawings are as follows: 
     display panel  100 ; 
     display area  110 ; binding area  120 ; COF film  101 ; 
     circuit board  102 ; first circuit board  1021 ; second circuit board  1022 ; 
     gap  1201 ; binding film  103 . 
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     Embodiments of the Present Disclosure 
     The following description of the embodiments with reference to the accompanying drawings is used to illustrate particular embodiments of the present disclosure. The directional terms referred in the present disclosure, such as “upper”, “lower”, “front”, “back”, “left”, “right”, “inner”, “outer”, “side surface”, etc. are only directions with regard to the accompanying drawings. The component numerals mentioned in the present disclosure, such as first, second, etc., are only used for distinguishing different components and for enabling the difference between the components to be better expressed. In the drawings, components with similar structure are indicated by the same reference numeral. 
     The embodiments of the present disclosure will be described in detail with references to the accompanying drawings. It is to be understood that the present disclosure may be expressed in various forms and is not limited in its application to the specific embodiments described in the present disclosure. The object of providing embodiments in the present disclosure is to explain the applications of the present disclosure, thereby enabling one skill in the art to understand the various embodiments of the present disclosure and various modifications that is respectively suitable for specific expected application. 
     As shown in  FIG. 2 , an embodiment 1 of the present disclosure provides a display panel  100 , comprising a display area  110  and a binding area  120 . 
     Wherein in the binding area  120 , the display panel  100  comprises a plurality of COF films  101 , wherein one end of the COF film  101  is connected to the display area  110 , and the other end of the COF film  101  is connected to a circuit board  102 . 
     Wherein, the circuit board  102  comprises at least one gap  1201 . 
     Wherein, the display panel  100  is provided with a binding film  103  at the gap  1201 , the binding film  103  connects two parts of the circuit boards  102  which are on both sides of the gap  1201 . 
     The gap  1201  divides the circuit board  102  into a first circuit board  1021  and a second circuit board  1022 . 
     The first circuit board  1021  is disposed on one side of the gap  1201  while the second circuit board  1022  is disposed on the other side of the gap  1201 . In  FIG. 2 , the first circuit board  1021  is disposed on a left side of the gap  1201  while the second circuit board  1022  is disposed on a right side of the gap  1201 . 
     A shape of the binding film  103  is a rectangular shape. 
     One end of the binding film  103  is bound to an end of the first circuit board  1021  which is close to the gap  1201  and the other end of the binding film  103  is bound to an end of the second circuit board  1022  which is close to the gap  1201 . 
     The circuit board  102  is connected to a control unit. 
     As shown in  FIG. 3 , an embodiment 2 of the present disclosure provides a display panel  100   a . The embodiment 2 differs from the embodiment 1 in that in the embodiment 2, a second circuit board  1022   a  is integrated with a control module. 
     Specifically, the second circuit board  1022   a  comprises a projection  101   a  which is disposed on a side of the second circuit board  1022   a  which is away from a display area  110   a . The projection  101   a  is disposed at the end of the second circuit board  1022   a  which is close to a gap  1201   a.    
     The control module is disposed on the projection  101   a.    
     A shape of a binding film  103   a  is a shape of a letter L. 
     One end of the binding film  103   a  is bound to a side of a first circuit board  1021   a  which is away from the display area  110   a  while the other end of the binding film  103   a  is bound to the end of the second circuit board  1022   a  which is close to the gap  1201   a.    
     As shown in  FIG. 4 , an embodiment 3 of the present disclosure provides a display panel  100   b . The embodiment 3 differs from the embodiment 1 in that in the embodiment 3, a first circuit board  1021   b  comprises a first projection  1023   b  which is disposed at an end of the first circuit board  1021   b  which is close to a gap  1201   b.    
     A second circuit board  1022   b  comprises a second projection  1024   b  which is disposed at an end of the second circuit board  1022   b  which is close to the gap  1201   b.    
     One end of a binding film  103   b  is bound to the first circuit board  1021   b  and to the first projection  1023   b , forming a first binding area. The other end of the binding film  103   b  is bound to the second circuit board  1022   b  and to the second projection  1024   b , forming a second binding area. 
     In actual application, a width of the binding area is greater than a width of the circuit boards. That is, a width of the first binding area is greater than a width of the first circuit board  1021   b , and a width of the second binding area is greater than a width of the second circuit board  1022   b.    
     As shown in  FIG. 5 , an embodiment 4 of the present disclosure provides a display panel  100   c . The embodiment 4 differs from the embodiment 1 in that in the embodiment 4, gaps  1201   c  are dense, and the display panel  100   c  is suitable for curved structure. 
     B y  forming a plurality of gaps  1201   c , thereby dividing the circuit board into a plurality of circuit board subunits  102   c  and by connecting the circuit board subunits  102   c  through binding films  103   c , a tension generated upon curving the circuit board may be reduced, and the display panel  100   c  may be effectively protected. 
     A display panel  100  is provided by the present disclosure. In the display panel  100 , by disposing the binding film  103  over the gap  1201  between the adjacent circuit boards  102 , and then forming connection wires on the binding film  103 , connections between the different circuit boards  102  are achieved. The display panel  100  solves a problem of high costs caused by traditional flexible circuit boards and connectors, thereby saving a large number of connectors and flexible circuit boards, and thereby significantly reducing costs. 
     The present disclosure also provides a display device, comprising a display panel. 
     Wherein the display panel is a display panel described in any of the embodiments 1 to 4. 
     In the display panel, by disposing the binding film  103  over the gap  1201  between the adjacent circuit boards  102 , and then forming the connection wires on the binding film  103 , the connections between the different circuit boards  102  are achieved. The display panel solves the problem of high costs caused by the traditional flexible circuit boards and connectors, thereby saving a large number of connectors and flexible circuit boards, and thereby significantly reducing costs. 
     The scope of the present disclosure is in no way restricted to what has been set forth in the present disclosure. It is evident that many modifications and variations will be apparent to those skilled in the art. Accordingly, it is intended to embrace all such modifications and variations that fall within the spirit and broad scope of the appended claims.