Patent ID: 7834869
Filing Date: 2010-11-16
Classification: G09G

Abstract:
1. A display panel driver for displaying an image on a display panel divided into a first display area and a second display area abutting the first display area, the display panel driver comprising: a first driver circuit; and a second driver circuit; wherein each of the first driver circuit and the second driver circuit has respective facilities for receiving, storing, and displaying image data, generating and displaying a screen saving image, and generating a timing signal that causes the screen saving image to move; each of the first driver circuit and the second driver circuit has a normal mode and a screen saving mode, and is operable as master and slave in the screen saving mode; the first driver circuit and the second driver circuit are disposed in separate integrated circuit chips that are connected in parallel between a system bus and the display panel, each integrated circuit chip having an external master/slave terminal that receives a voltage having a first logic level if the respective driver circuit is to operate as the master in the screen saving mode or having a second logic level if the respective driver circuit is to operate as the slave in the screen saving mode; the second driver circuit is identical in structure to the first driver circuit; the first driver circuit has a first oscillator and a first external terminal that is directly connected to the first oscillator; the second driver circuit has a second oscillator and a second external terminal that is directly connected to the second oscillator, the first and second external terminals being directly connected to one another; and in the normal mode, in the screen saving mode,