| abstract |
A microchip 1 in which a resinous film can be inhibited from sagging into a channel. The microchip 1 comprises: a resinous substrate 2 having a channel groove formed therein; and a resinous film bonded to a surface of the substrate on which the channel groove has been formed. A micro-channel 3 including channels 3 A and channels 3 B is formed by the channel groove and the resinous film 10. The total length of the channels 3 B, which is parallel to the X direction for the resinous substrate 2, is larger than the total length of the channels 3 A, which is parallel to the Y direction for the resinous substrate 2. The resinous substrate 2 has been bonded to the resinous film so that the sides parallel to the channels 3 B are parallel to the TD direction of the resinous film and that the sides parallel to the channels 3 A are parallel to the MD direction of the resinous film. |