Patent ID: 6331274
Filing Date: 2001-12-18
Classification: B01J,B01L,B82Y,C07B,C07H,C07K,C12Q,C40B,F04B,G01N,G11C,H01L

Abstract:
A unit cell circuit for providing current in an active biological matrix device adapted to receive a conductive solution including charged biological materials, the active biological matrix device comprising an array of unit cells, the unit cell circuit comprising:a variable current control element including an input, an output and a control element, the control element being adapted to receive a first control signal via a first column line,a select switch having an input, an output and a control element, the input being connected to the output of the variable current element, thereby providing a series connection between the variable current control element and the select switch, the control element being adapted to receive a second control signal via a first row line, the input of the variable current control element being connected to a first potential and the output of the select switch being adapted to contact the conductive solution, anda return electrode, the return electrode being connected to a second potential and adapted to contact the conductive solution,whereby in the presence of the conductive solution current is provided between the return electrode and the output of the select switch, said unit cell circuit being located on the biological matrix device.