Image display apparatus using thin-film transistors

Abstract

There are provided a display apparatus and a display method, with which compressed image data that is to be decompressed can be transmitted to the display apparatus in an environment in which a transmission capacity is not always secured, and good image display is realized. An example of the display apparatus is an active matrix display apparatus formed by using thin-film transistors formed on an insulating substrate. In the active matrix display apparatus, a circuit that receives an image data signal from an external system via a non-contact transmission path and amplifies the image data signal, a circuit that processes the image data signal, and a memory circuit that stores the processed image data are integrated on the insulating substrate.

1 . An image display method that effects image display using a display apparatus that includes a receiving circuit, a compressed data decompression circuit, a memory circuit and an active matrix display unit, which are formed using thin-film transistors formed on an insulating substrate, comprising:
 a step of causing the receiving circuit to receive compressed an image data signal from an external system via a non-contact transmission path, and to amplify the image data signal;   a step of decompressing the amplified image data signal into bitmap data corresponding to each of display bits;   a step of storing the decompression-processed image data in the memory circuit; and   a step of reading out the bitmap data from the memory circuit and causing the active matrix display unit to display the bitmap data.   
   
   
       2 . The image display method according to  claim 1 , wherein each of the thin-film transistors is formed on a semiconductor island that includes a re-crystallized single-crystal region and a polycrystalline region that adjoins the single-crystal region.