Display device and image displaying method of display device

A liquid crystal display device comprising:

• a liquid crystal display panel composed of a plurality of sub-screens, and forming one screen by an assembly of images displayed on said sub-screens;
• first and second buffers provided so as to correspond to each of the plurality of sub-screens;
• reading-out memory selector for selecting any one of said first and second buffers, from which the image data is read out, wherein said reading-out memory selector is provided in plural number so as to correspond to each sub-screen, and outputs of the image data to be displayed on the screen are made to synchronize among the plurality of said reading-out memory selector;
• a writing selector for selecting into which buffer of said first and second buffers image data supplied from the outside should be written;
• and
• a display selector for selecting which image data written in said first and second buffers should be displayed on said sub-screens.

A display device for displaying images onto a plurality of sub-screens, the display device comprising:

• an image data storing section having a plurality of double buffers;
• first selector provided for each of said double buffers, the first selector selecting to which buffer of said double buffers image data transferred from the outside is to be stored;
• second selector provided for each of said double buffers, the second selector selecting from which double buffer the image data is to be read out, wherein said second selector is provided in plural number so as to correspond to each sub-screen, and o outputs of the image data to be displayed on the sub-screens are mad to synchronize among the plurality of said second selector;
• an image display panel for displaying an image based on the image data read Out from the selected buffer by said second selector;
• and
• a controller for issuing an instruction to select a buffer to said first or second selectors.

A method of displaying an image on a display device in which first and second frame buffers are provided so as to correspond to each of partial display areas obtained by dividing a display area, comprising:

• a first step of reading out image date written in said second frame buffer while image data is being written into said first frame buffer, and displaying the image data read out from said second frame buffer on said partial display areas;
• a second step of stopping an operation of said first frame buffer after completion of writing of the image data into said first frame buffer;
• a third step of reading out the image data written in said first frame buffer by a plurality of reading-out memory selectors corresponding to each of said partial display areas after stopping the operation of said first frame buffer, and displaying the image data read out from said first frame buffer on said partial display areas;
• a fourth step of writing image data into said second frame buffer;
• and
• a fifth step synchronizing said image data read out by said plurality of reading-out memory selectors.