Reference voltage circuit, reference voltage supply main circuit, and display device

A reference voltage circuit, comprising:

• N first signal-line reference voltage lines, M second signal-line reference voltage lines, and a resistance circuit,
• wherein both N and M are positive integers, and at least one of the following (i) or (ii):
• (i) the N first signal-line reference voltage lines are configured to receive N first signal-line reference voltages, respectively;
• the resistance circuit comprises M resistors;
• a m-th resistor of the M resistors comprises P first sub-resistors, and a first terminal of a p-th first sub-resistor of the P first sub-resistors is connected to a p-th first signal-line reference voltage line of the N first signal-line reference voltages lines, and a second terminal of the p-th first sub-resistor is connected to a m-th second signal-line reference voltage line of the M second signal-line reference voltage lines;
• a resistance value of each of the P first sub-resistors is larger than a resistance value of each of the N first signal-line reference voltage lines, P is a positive integer smaller than or equal to N, m is a positive integer smaller than or equal to M, and p is a positive integer smaller than or equal to P;
• or
• (ii) the M second signal-line reference voltage lines are configured to receive M second signal-line reference voltages, respectively;
• the resistance circuit comprises N resistors;
• a n-th resistor of the N resistors includes Q second sub-resistors, and a first terminal of a q-th second sub-resistor of the Q second sub-resistors is connected to a n-th first signal-line reference voltage line of the N first signal-line reference voltages lines, and a second terminal of the q-th second sub-resistor is connected to a q-th second signal-line reference voltage line of the M second signal-line reference voltage lines;
• a resistance value of each of the Q second sub-resistors is larger than a resistance value of each of the M second signal-line reference voltage lines, wherein Q is an integer smaller than or equal to M, n is a positive integer smaller than or equal to N, and q is a positive integer smaller than or equal to Q.