An electronic modulating device , comprising: a first modulating unit comprising: a first transistor comprising a channel arranged in an extending direction (V1); and a first modulating electrode electrically connected to the first transistor and arranged in a first longitudinal direction (V3), wherein the first longitudinal direction is parallel to a long side of a smallest imaginary rectangle that encircles the first modulating electrode; and a second modulating unit comprising: a second transistor comprising a channel arranged in the extending direction (V1); and a second modulating electrode electrically connected to the second transistor and arranged in a second longitudinal direction (V4) different from the first longitudinal direction, wherein the second longitudinal direction is parallel to a long side of a smallest imaginary rectangle that encircles the second modulating electrode; wherein a first included angle (θ A ) between the extending direction and the first longitudinal direction is different from a second included angle (θ B ) between the extending direction and the second longitudinal direction, and wherein a difference between the first included angle (θ A ) and the second included angle (θ B ) is ranged from 15 degrees to 90 degrees. a first modulating unit comprising: a first transistor comprising a channel arranged in an extending direction (V1); and a first modulating electrode electrically connected to the first transistor and arranged in a first longitudinal direction (V3), wherein the first longitudinal direction is parallel to a long side of a smallest imaginary rectangle that encircles the first modulating electrode; and a first transistor comprising a channel arranged in an extending direction (V1); and a first modulating electrode electrically connected to the first transistor and arranged in a first longitudinal direction (V3), wherein the first longitudinal direction is parallel to a long side of a smallest imaginary rectangle that encircles the first modulating electrode; and a second modulating unit comprising: a second transistor comprising a channel arranged in the extending direction (V1); and a second modulating electrode electrically connected to the second transistor and arranged in a second longitudinal direction (V4) different from the first longitudinal direction, wherein the second longitudinal direction is parallel to a long side of a smallest imaginary rectangle that encircles the second modulating electrode; a second transistor comprising a channel arranged in the extending direction (V1); and a second modulating electrode electrically connected to the second transistor and arranged in a second longitudinal direction (V4) different from the first longitudinal direction, wherein the second longitudinal direction is parallel to a long side of a smallest imaginary rectangle that encircles the second modulating electrode; wherein a first included angle (θ A ) between the extending direction and the first longitudinal direction is different from a second included angle (θ B ) between the extending direction and the second longitudinal direction, and wherein a difference between the first included angle (θ A ) and the second included angle (θ B ) is ranged from 15 degrees to 90 degrees. <EOS>