Patent ID: 8094095
Filing Date: 2012-01-10
Classification: G09G,G11C

Abstract:
1. A current drive apparatus which operates a plurality of loads by applying a current thereto, the current drive apparatus comprising: a single current generation circuit which outputs an operating current having a predetermined current value; a plurality of input current storage circuits connected to the single current generation circuit; and a plurality of current storage circuit groups each including a predetermined number of current storage circuits which are connected to the input current storage circuits; wherein the current storage circuits are connected to output terminals connected to each of said plurality of loads; wherein each of the input current storage circuits sequentially fetches, through an input side switch circuit, the operating current output from the single current generation circuit, holds a voltage component corresponding to a current value of the operating current, and simultaneously outputs, under control of a shift register section, the operating current based on the held voltage component to each of the component storage circuit groups in parallel; and wherein the current storage circuits of each of the plurality of current storage circuit groups sequentially fetch the operating current output from each of the input current storage circuits, hold the voltage component corresponding to the current value of the operating current, and simultaneously output, through a control circuit, a drive current based on the held voltage component to the output terminals.