A thin-film integrated circuit comprising a first semiconductor device, a second semiconductor device, a first resistor, and a second resistor is provided. A semiconducting region of the first semiconductor device, a resistor body of the first resistor, a semiconducting region of the second semiconductor device, and a resistor body of the second resistor are formed from at least one of a first source material and a second source material, and a material of the resistor body of the first resistor and a material of the resistor body of the second resistor have different electrical properties.