Patent ID: 6839046
Filing Date: 2005-01-04
Classification: G09G

Abstract:
1. A method for manufacturing a display driving device which includes a plurality of driving semiconductor elements which generate in multiple generation stages a drive signal for a display element for displaying an image, and which are serially connected to one another with respect to input and output terminals of a start pulse signal and a clock signal which are used to generate the drive signal, the plurality of drive semiconductor elements having a transfer circuit for serially transferring a signal to be a source of the drive signal to each of the multiple generation stages by transferring the start pulse signal in a direction from the input terminal to the output terminal in synchronization with the clock signal, and the plurality of driving semiconductor elements being provided with the input terminal and the output terminal so that the start pulse signal and the clock signal are transferred in reverse directions with respect to the plurality of driving semiconductor elements which are serially connected to one another, the plurality of driving semiconductor elements further and each including a data circuit for directly outputting input data, a data input terminal and a data output terminal of the data circuit being serially connected to each other so that the data is transferred in a direction of the clock signal, and the start pulse signal being inputted to the data input terminal on a first stage of the plurality of driving semiconductor elements with respect to the transfer direction of the data, and the data output terminal on a last stage of the plurality of driving semiconductor elements with respect to the transfer direction of the data being connected to the input terminal of the start pulse signal on the last stage of the plurality of driving semiconductor elements, the plurality of driving semiconductor elements each being mounted on a tape carrier package having input side outer lead terminals used for the serial connection and output side outer lead terminals to be connected to the display element, and the data output terminals on a last stage of the plurality of driving semiconductor elements with respect to the transfer direction of the data being shorted by predetermined input side outer lead terminals on the tape carrier package, said method comprising the steps of: forming wiring of the tape carrier package by shorting beforehand predetermined two input side outer lead terminals; and cutting a film so as to maintain the shorted portion of the tape carrier package on which the last stage of the plurality of driving semiconductor elements with respect to the transfer direction of the data is to be mounted, and cutting a film so as not to maintain the shorted portion of the tape carrier package on which other of the plurality of driving semiconductor elements is to be mounted.