Patent ID: 7605899
Filing Date: 2009-10-20
Classification: G06F,G09G

Abstract:
1. A display apparatus, comprising: a display panel including pixels arranged in a matrix, each of said pixels being capable of retaining a written display state without applying a voltage to said pixel after completion of writing, pixel electrodes provided to said pixels, respectively, and a common electrode provided commonly to said pixels, scanning lines and signal lines for supplying a voltage to said pixel electrodes, a drive circuit connected to said common electrode, said scanning lines, and said signal lines, and a control circuit for providing a signal to said drive circuit, wherein said control circuit selectively switches between a display drive mode in which said display panel displays an image through sequential scanning of said scanning lines and application of a variable voltage to pixels via said signal lines by said drive circuit and a rewriting drive mode in which selected pixels are rewritten into black or white through application of a voltage, which is higher than a range of the variable voltage, to the selected pixels on a scanning line selected by said drive circuit.