Synaptics Display Devices Gk

Hideaki Honda

Hiroki Takeuchi

Hirofumi Sonoyama

Hikaru Shibahara

A display driver that receives display line data of plural display lines to perform drive control on a display panel includes a line memory for storing display line data which is supplied from the outside. The display driver includes a logic circuit that controls write and read-out of the display line data in and from the line memory, and sorts pixel data of the display line data using read out data from the line memory, to generate display drive data. Drive circuits drive the display panel in units of display lines based on the drive data which is output from the logic circuit. The drive circuits are separately arranged on both sides of the logic circuit and the line memory which are interposed therebetween. The storage capacity of the line memory corresponds to the number of lines smaller than the number of display lines of a display frame.

Display driver sorting display data for output to a display panel

A liquid crystal display driver IC includes a plurality of communication interface circuits, a plurality of driving circuits which drive a plurality of source lines, and a selector circuit. In order to secure a necessary band-width, a necessary number of circuits, among the plurality of communication interface circuits, is connected in parallel to the communication channels, and an unused circuit is suspended. The selector circuit selectively controls to which one of the plurality of driving circuits each of a plurality of image data outputs respectively received from the connected communication interface circuits is supplied.

Growing community of inventors

Tokyo, Japan

Hideaki Honda