Electrophoretic dispersion liquid and electrophoretic display device

An input 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,
• a control circuit for providing a signal to said drive circuit,
• a position detection device for detecting a position designated by a positioning member and outputting information on the detected position,
• wherein when there is no output of said position detection device, said control circuit selects a display drive mode in which a gradation image is displayed on said display panel and said drive circuit applies a variable voltage to pixels through said scanning and data lines to display the gradation image on said display panel, and when there is an output of said position detection device, said control circuit selects a rewriting drive mode in which selected pixels of said display panel are rewritten into black or white and said drive circuit scans a part of said scanning lines and applies a voltage, which is higher than a range of said variable voltage, to the selected pixels to rewrite the selected pixels corresponding to the position designated by the pointing member.