Steady-state incoherently coupled screening photovoltaic spatial soliton pairs are predicted for biased photorefractive crystal circuit with a divider resistance. All kinds of the incoherently coupled spatial soliton pairs can be obtained from this theory by adjusting the values of the divider resistance, the biased electric field and photovoltaic electric field, such as the incoherently coupled screening spatial soliton pairs in biased photorefractive crystal with or without a divider resistance, the photovoltaic spatial soliton pairs in open-circuit, the photovoltaic spatial soliton pairs in close-circuit with or without a divider resistance, the screening-photovoltaic spatial soliton pairs in biased photovoltaic-photorefractive crystal with or without a divider resistance. Previous theories advanced individually elsewhere for these soliton pairs can be obtained by simplifying this theory under appropriate conditions.