A driving circuit for a display panel, the display panel comprising a plurality of display areas (12, 14, 16, 18), the driving circuit comprising: a plurality of source drivers (121, 122, 123, 124) each configured to generate and supply grayscale voltages to a respective one of the plurality of display areas (12, 14, 16, 18), the grayscale voltages being generated by use of a plurality of gamma voltages as reference voltages; a plurality of timing controllers (111, 112, 113, 114) each configured to control a respective one of the plurality of source drivers (121, 122, 123, 124) to generate and supply respective grayscale voltages; a gamma voltage generation circuit configured to supply the plurality of gamma voltages to at least two of the plurality of source drivers (121, 122, 123, 124), the gamma voltage generation circuit comprising a digital circuit portion and an analog circuit portion; and characterized in further comprising: a first direct current power source for supplying power to the gamma voltage generation circuit dedicatedly, at least one second DC power source for supplying power to the plurality of timing controllers (111, 112, 113, 114), wherein the at least one second DC power source is different from the first DC power source and receives no input from the gamma voltage generation circuit, wherein the first DC power source comprises two DC/DC converters, one of which used for supplying a DC voltage to the digital circuit portion of the gamma voltage generation circuit, the other one of which used for supplying a DC voltage to the analog circuit portion of the gamma voltage generation circuit. a plurality of source drivers (121, 122, 123, 124) each configured to generate and supply grayscale voltages to a respective one of the plurality of display areas (12, 14, 16, 18), the grayscale voltages being generated by use of a plurality of gamma voltages as reference voltages; a plurality of timing controllers (111, 112, 113, 114) each configured to control a respective one of the plurality of source drivers (121, 122, 123, 124) to generate and supply respective grayscale voltages; a gamma voltage generation circuit configured to supply the plurality of gamma voltages to at least two of the plurality of source drivers (121, 122, 123, 124), the gamma voltage generation circuit comprising a digital circuit portion and an analog circuit portion; and characterized in further comprising: a first direct current power source for supplying power to the gamma voltage generation circuit dedicatedly, at least one second DC power source for supplying power to the plurality of timing controllers (111, 112, 113, 114), wherein the at least one second DC power source is different from the first DC power source and receives no input from the gamma voltage generation circuit, wherein the first DC power source comprises two DC/DC converters, one of which used for supplying a DC voltage to the digital circuit portion of the gamma voltage generation circuit, the other one of which used for supplying a DC voltage to the analog circuit portion of the gamma voltage generation circuit. a first direct current power source for supplying power to the gamma voltage generation circuit dedicatedly, at least one second DC power source for supplying power to the plurality of timing controllers (111, 112, 113, 114), wherein the at least one second DC power source is different from the first DC power source and receives no input from the gamma voltage generation circuit, wherein the first DC power source comprises two DC/DC converters, one of which used for supplying a DC voltage to the digital circuit portion of the gamma voltage generation circuit, the other one of which used for supplying a DC voltage to the analog circuit portion of the gamma voltage generation circuit.