Method and circuit to optimize n-line lcd power consumption

A display driver, comprising:

• a source driver configured to selectively couple to a first source line and a second source line in a display panel, the source driver comprising:
• an amplifier, wherein the source driver is configured to drive a first voltage on the first source line and a second voltage on the second source line using the amplifier;
• precharge circuitry;
• and
• amplifier control logic configured to disable the amplifier after the first voltage is driven onto the first source line and the source driver is decoupled from the first source line,
• wherein, while the amplifier is disabled, the source driver is configured to alter a charge stored in the precharge circuitry based on a latent voltage previously driven onto the second source line,
• wherein, after altering the charge in the precharge circuitry, the amplifier control logic is configured to enable the amplifier such that an output of the amplifier drives the second voltage onto the second source line.

A display device, comprising:

• a display panel, comprising:
• a first source line,
• a second source line, and
• a selection element, and
• a source driver, wherein the source driver is selectively coupled to the first and second source line via the selection element, the source driver comprising:
• an amplifier configured to drive a first voltage on the first source line and a second voltage on the second source line;
• precharge circuitry;
• and
• amplifier control logic configured to disable the amplifier after the first voltage is driven onto the first source line and the source driver is decoupled from the first source line using the selection element,
• wherein, while the amplifier is disabled, the selection element is configured to couple the second source line to the precharge circuitry to alter a charge stored in the precharge circuitry based on a latent voltage previously driven onto the second source line,
• wherein, after altering the charge in the precharge circuitry, the amplifier control logic is configured to enable the amplifier such that an output of the amplifier drives the second voltage onto the second source line.