The utility model discloses an auxiliary grid
screen printing plate and an auxiliary grid, which are applied to the technical field of solar cells and comprise a gauze and a photosensitive
adhesive film layer attached to the gauze, the
total thickness of the gauze and the photosensitive
adhesive film layer is 16 [mu] m + / -2 [mu] m and comprises values at two ends; the mesh yarns are mesh knot-free mesh yarns with the wire
diameter of 500 meshes and 7 microns; at least 170 auxiliary
grid pattern holes are formed in the photosensitive
adhesive film layer; the width of the auxiliary
grid pattern hole is 12 [mu] m + / -2 [mu] m, and the auxiliary
grid pattern hole comprises values at two ends; the auxiliary grid pattern holes are in one-to-one correspondence with the auxiliary grids. Compared with a conventional
screen printing plate, the width of an auxiliary grid pattern is reduced, the printing
line width of a
solar cell can be effectively reduced, the shading area can be greatly reduced due to the reduction of the
line width, meanwhile, the thickness of the
screen printing plate is reduced, the ink permeability of auxiliary grid pattern holes can be effectively improved,
slurry can permeate more easily, line breakage is prevented, and the grid line quality is improved; and the conversion efficiency of the battery piece can be improved.