Display module drive circuit and method and display equipment

The invention discloses a display module drive circuit and method and display equipment. A display module comprises a red backlight, a green backlight and a blue backlight. The display module drive circuit comprises a control circuit, a core interface circuit and a logic interface circuit. The core interface circuit is used for providing dimming signals for the control circuit, and the logic interface circuit is used for providing field-frequency signals for the control circuit. The control circuit is used for generating red-light control signals, green-light control signals and blue-light control signals according to the dimming signals and the field-frequency signals and outputting to the display module according to a preset sequence to control the red backlight, the green backlight andthe blue backlight to emit light sequentially to achieve a colorful display effect. The red-light control signals, the green-light control signals and the blue-light control signals are synchronous with the field-frequency si