The illustration shows Microchip’s graphics system block diagram. The typical system normally consists of a microcontroller, an LCD controller, and the LCD glass. The microcontroller normally creates, manipulates, and renders graphic elements such as buttons, menus and images. The LCD controller includes digital control logic, an optional graphics accelerator, an image buffer, and a gate driver. If a graphics accelerator is present in the LCD controller, it provides hardware acceleration to some graphic elements and relieves the microcontroller of duties for other functions. The digital control logic serves as an image buffer arbiter and an electronic equivalent of a picture tube for image displaying. A graphic LCD solution requires an image buffer to store a minimum of one image frame. Finally the dependent gate driver changes based on the glass technology, size, and resolution, and then converts the digital to analog waveforms and drives the LCD glass. The LCD panel usually comes with or without the embedded LCD controller. For the panel that comes with the embedded LCD controller, the panel is usually considered an LCD module. The panel that does not come with a controller is usually considered Chip-on-Glass (COG), meaning that either the LCD controller or the gate driver is mounted to the contact edge of the LCD glass.