COLOR LIQUID CRYSTAL DISPLAY DEVICE AND IMAGE DISPLAY THEREOF

• US 20100026621A1
• Filed: 10/06/2009
• Published: 02/04/2010
• Est. Priority Date: 10/12/1995
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: HIRAKATA, Yoshiharu
• Granted Patent: US 8,228,288 B2
• Time in Patent Office: Days
• US Class Current: 345/104
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 5/022 using memory planes
• CPC Class Codes: G09G 5/36 characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory

Abstract

A color liquid crystal display device capable of displaying color images comprises an input pen for use in determining the individual position for color display on the screen of a liquid crystal display panel, a coordinate detector for recognizing the position as designated by the input pen to output the position as the corresponding coordinate data, a color designator circuit for designating a color as presently selected for color display to output the color as a color data, a memory device for storing the color data representative of the color designated, a memory controller responsive to receipt of an address issued from the selected coordinate data for controlling the color data to be written into and read out of the memory, and an output controller which allows the color data read from the memory to be supplied to the liquid crystal display panel as video data.

Claims

1. A color liquid crystal display device comprising:

a display panel;

a color designator for designation of a kind of a color to be displayed;

a coordinate detecting means provided in the display panel;

a memory means for storing a plurality of color data designated by the color designator;

an output controlling means for outputting image data onto the display panel;

means for generating the image data using coordinate data outputted from the coordinate detecting means and the color data stored in the memory means,

wherein a coordinate can be inputted by the coordinate detecting means provided in the display panel.