JP2017517145A5 - - Google Patents

Claims (20)

A scriber for forming a plurality of scribe lines on the solar cell wafer;
A printer for applying an electrically conductive bonding agent to the solar cell wafer;
Belt provided after the electrically conductive bonding agent is applied to the solar cell wafer, the by separating the solar cell wafer along said plurality of scribe lines, a plurality of physically separate solar cells Strip A system comprising: The belt is a perforated belt;
The system of claim 1 , wherein a vacuum manifold draws a vacuum on the bottom surface of the solar cell wafer. The system of claim 1 or 2, wherein the printer is a screen, ink jet, or mask printer. The system according to any one of claims 1 to 3 , wherein the scriber is a laser scriber. With a vacuum manifold,
The belt advances the solar cell wafer along the surface of the vacuum manifold,
The vacuum manifold draws a vacuum against the bottom surface of the solar cell wafer through a plurality of perforations in the belt, pulls the solar cell wafer to the surface of the vacuum manifold,
As the belt advances along the solar cell wafer to a surface of the vacuum manifold, the solar cell wafer is bent Intention to Curved portion of the surface of the vacuum manifold by the vacuum, whereby said plurality of The system according to any one of claims 1 to 4 , wherein the solar cell wafer is cleaved along one or more of the scribe lines. The vacuum drawn by the vacuum manifold against the bottom surface of the solar cell wafer changes along a direction in which the solar cell wafer is advanced, and the surface of the vacuum manifold is cleaved. 6. The system of claim 5, wherein the system is strongest in the area.   The plurality of perforations in the belt are arranged such that a leading edge and a trailing edge of the solar cell wafer along a direction of travel of the solar cell wafer lie on at least one perforation of the belt. Or the system of 6. The surface of the vacuum manifold has a flat region, a transition curved region adjacent to the flat region and having a first curvature, and a cleavage region adjacent to the transition curved region and having a second curvature higher than the first curvature. And
The belt, along said flat region, through the then said and the transition bend area in the transition bend region, is subsequently cleaved along the one or more of the solar cell wafer said plurality of scribe lines The system according to claim 5 , wherein the solar cell wafer is advanced into the cleavage region. The system of claim 8, wherein the vacuum manifold draws a stronger vacuum in the cleavage region than in the flat region. The surface of the vacuum manifold has a post-cleavage region adjacent to the cleavage region and having a third curvature higher than the second curvature;
The belt advances a plurality of solar cell strips cleaved from the solar cell wafer from the cleavage region to the post-cleavage region,
The third curvature, when the cleaved plurality of solar cells strip is advanced by the belt, high enough to prevent sequentially cleaved plurality of cleaved edge of the solar cell strips were touched, claim The system according to 8 or 9 . The system of claim 10, wherein the vacuum manifold draws a stronger vacuum in the cleavage region than in the flat region and in the post-cleavage region. The vacuum drawn by the vacuum manifold causes asymmetrical stress distribution along the scribe lines to promote nucleation and propagation of a single cleavage rift along the scribe line, any one of the claims 5 11 the system according to.   Means for scribing the solar cell wafer to form a plurality of scribe lines on the solar cell wafer;
  Means for applying an electrically conductive bonding agent to the solar cell wafer;
  Means for separating the solar cell wafer along the plurality of scribe lines after the electrically conductive adhesive is applied to the solar cell wafer to provide a plurality of physically separated solar cell strips;
  A system comprising:   A vacuum manifold having a surface;
  A belt that advances a solar cell wafer along the surface of the vacuum manifold;
  With
  The vacuum manifold draws a vacuum against the bottom surface of the solar cell wafer to bend the solar cell wafer against a curved portion of the surface of the vacuum manifold, thereby providing a plurality of scribe lines on the solar cell wafer. Sequentially cleaving the solar cell wafer along
  system.   The surface of the vacuum manifold has a flat region, a transition curved region adjacent to the flat region and having a first curvature, and a cleavage region adjacent to the transition curved region and having a second curvature higher than the first curvature. And
  The belt passes along the flat region, then into and through the transition curve region, and then the solar cell wafer is cleaved along one or more of the plurality of scribe lines. The system of claim 14, wherein the solar cell wafer is advanced into a cleavage region.   The system of claim 15, wherein the vacuum manifold draws a stronger vacuum in the cleavage region than in the flat region.   The surface of the vacuum manifold has a post-cleavage region adjacent to the cleavage region and having a third curvature higher than the second curvature;
  The belt advances a plurality of solar cell strips cleaved from the solar cell wafer from the cleavage region to the post-cleavage region,
  The third curvature is high enough to prevent the cleavage edges of the sequentially cleaved solar cell strips from touching when the cleaved solar cell strips are advanced by the belt. The system according to 15 or 16.   18. The vacuum drawn by the vacuum manifold causes an asymmetric stress distribution along the scribe line that facilitates nucleation and propagation of a single cleaved tear along the scribe line. The system described in.   The system according to any one of claims 14 to 18, further comprising a laser scriber that forms the plurality of scribe lines on the solar cell wafer.   20. A system according to any one of claims 14 to 19, comprising a printer that applies an electrically conductive bonding agent to the solar cell wafer before the solar cell wafer is cleaved.