Thin film-type solar cell

Abstract

The present inventive concept relates to a thin film type solar cell including a plurality of unit cells serially connected to one another on a substrate; and a light transmission part provided in the plurality of unit cells, wherein the light transmission part is provided in a discontinuous rectilinear structure including at least one disconnection part. According to the present inventive concept, since the light transmission part is discontinuously formed, the repetition characteristic of the light transmission part including a plurality of dot patterns may be reduced, thereby effectively solving a problem where a wave pattern such as a moire phenomenon occurs when light is passing through the light transmission part.

We claim: 
     
         1 . A thin film type solar cell comprising:
 a plurality of unit cells serially connected to one another on a substrate; and   a light transmission part provided in the plurality of unit cells,   wherein the light transmission part is provided in a discontinuous rectilinear structure including at least one disconnection part.   
     
     
         2 . The thin film type solar cell of  claim 1 , wherein the light transmission part is provided in a plurality of continuous areas which are apart from one another with the at least one disconnection part therebetween, and a plurality of dot patterns overlap one another in the plurality of continuous areas. 
     
     
         3 . The thin film type solar cell of  claim 2 , wherein
 the at least one disconnection part comprises a first disconnection part and a second disconnection part, and   the plurality of continuous areas comprise a first continuous area and a second continuous area, which are apart from one another with the first disconnection part therebetween, and a third continuous area which is apart from the second continuous area with the second disconnection part therebetween.   
     
     
         4 . The thin film type solar cell of  claim 3 , wherein a length of the first disconnection part differs from a length of the second disconnection part. 
     
     
         5 . The thin film type solar cell of  claim 3 , wherein number of the plurality of dot patterns differs in at least two continuous areas among the first continuous area, the second continuous area, and the third continuous area. 
     
     
         6 . The thin film type solar cell of  claim 1 , wherein
 the light transmission part comprises a first light transmission part and a second light transmission part which are apart from each other in a certain direction, and   a pattern of the first light transmission part differs from a pattern of the second light transmission part.   
     
     
         7 . The thin film type solar cell of  claim 6 , wherein
 each of the first light transmission part and the second light transmission part is provided in a plurality of continuous areas which are apart from one another with the disconnection part therebetween, and   the disconnection part of the first light transmission part is provided not to overlap the disconnection part of the second light transmission part.   
     
     
         8 . The thin film type solar cell of  claim 6 , wherein
 each of the first light transmission part and the second light transmission part is provided in a plurality of continuous areas which are apart from one another with the disconnection part therebetween, and   a length of the disconnection part of the first light transmission part differs from a length of the disconnection part of the second light transmission part.   
     
     
         9 . The thin film type solar cell of  claim 6 , wherein
 each of the first light transmission part and the second light transmission part is provided in a plurality of continuous areas which are apart from one another with the disconnection part therebetween, and   number of the plurality of dot patterns provided in a continuous area of the first light transmission part differs from number of the plurality of dot patterns provided in a continuous area of the second light transmission part.   
     
     
         10 . A thin film type solar cell comprising:
 a plurality of separation parts arranged in a first direction on a substrate to separate a plurality of unit cells; and   a plurality of light transmission parts arranged in a second direction to intersect with the plurality of separation parts, the plurality of light transmission parts defining an active area along with the plurality of separation parts,   wherein a disconnection part of each of the plurality of light transmission parts is provided at a boundary of the active area.   
     
     
         11 . The thin film type solar cell of  claim 10 , wherein
 the plurality of light transmission parts comprise a first light transmission part and a second light transmission part which are apart from each other, and   the disconnection part comprises a first disconnection part of the first light transmission part and a second disconnection part of the second light transmission part.   
     
     
         12 . The thin film type solar cell of  claim 11 , wherein a pattern of the first light transmission part differs from a pattern of the second light transmission part. 
     
     
         13 . The thin film type solar cell of  claim 11 , wherein the first disconnection part and the second disconnection part are provided not to overlap each other. 
     
     
         14 . The thin film type solar cell of  claim 10 , wherein
 the active area comprises a first active area and a second active area, and   the disconnection part provided in the first active area and the disconnection part provided in the second active area are provided asymmetrically.   
     
     
         15 . The thin film type solar cell of  claim 1 , wherein
 a first electrode, a semiconductor layer, and a second electrode are provided on the substrate, and   the light transmission part is provided in a structure where a certain area of each of the semiconductor layer and the second electrode is removed.   
     
     
         16 . The thin film type solar cell of  claim 10 , wherein
 a first electrode, a semiconductor layer, and a second electrode are provided on the substrate, and   the light transmission part is provided in a structure where a certain area of each of the semiconductor layer and the second electrode is removed.