Color liquid crystal display device and image display method thereof

• US 8,803,792 B2
• Filed: 07/02/2012
• Issued: 08/12/2014
• Est. Priority Date: 10/12/1995
• Status: Expired due to Fees

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Hirakata, Yoshiharu
• Primary Examiner(s): Nguyen, Kevin M
• Application Number:
  US13/540,185
• Publication Number:
  US 20120274654A1
• Time in Patent Office: 771 Days
• Field of Search: 345173-183, 345/104
• 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 device comprising:

a display panel comprising pixels arranged in a matrix;

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

a coordinate detector device;

a memory for storing color data designated by the color designator; and

an output controller for outputting image data onto the display panel,

wherein a coordinate of an image to be display is inputted to the coordinate detector device,

wherein the image data are generated using coordinate data generated from the coordinate and the color data stored in the memory, and

wherein the display panel displays both the image with the color at a place corresponding to the coordinate and a plurality of color designation areas for selection of the color simultaneously.

2. The device according to claim 1, wherein the coordinate detector device comprises at least one selected from the group consisting of a pressure sensor, an electrostatic sensor and a heat sensor.

3. The device according to claim 1, wherein each of the pixels includes a thin film transistor.

4. The device according to claim 1, wherein the color is selected by pointing one of the plurality of the color designation areas.

5. The device according to claim 1, wherein the display panel comprises liquid crystal.

6. The device according to claim 1, wherein the coordinate is inputted by using a pointing input device.

7. A device comprising:

a memory;

a display panel comprising pixels arranged in a matrix; and

a coordinate detector device,

wherein a coordinate of an image to be display is inputted to the coordinate detector device,

wherein image data are generated using coordinate data generated from the coordinate and a selected color both of which are stored in the memory, and

wherein the display panel displays both the image with the selected color at a place corresponding to the coordinate by using the image data and a plurality of color designation areas for selection of color simultaneously.

8. The device according to claim 7, wherein the coordinate detector device comprises at least one selected from the group consisting of a pressure sensor, an electrostatic sensor and a heat sensor.

9. The device according to claim 7, wherein each of the pixels includes a thin film transistor.

10. The device according to claim 7, wherein the selected color is selected by pointing one of the plurality of the color designation areas before the coordinate of the image to be display is designated.

11. The device according to claim 7, wherein the display panel comprises liquid crystal.

12. The device according to claim 7, wherein the coordinate is inputted by using a pointing input device.

13. A device comprising:

a display panel comprising pixels arranged in a matrix, and configured to perform a function of detecting a coordinate which is designated on the display panel; and

a memory,

wherein the memory is configured to accept an information of the coordinate of an image to be displayed, the information of the coordinate of the image being designated by using the function,

wherein the device is configured to generate image data from the coordinate and a selected color both of which are stored in the memory, and

wherein the device is configured to display both the image with the selected color at a place corresponding to the coordinate by using the image data and a plurality of color designation areas for selection of color on the display panel simultaneously.

14. The device according to claim 13, wherein the function is performed by using at least one selected from the group consisting of a pressure sensor, an electrostatic sensor and a heat sensor.

15. The device according to claim 13, wherein the display panel includes a thin film transistor.

16. The device according to claim 13, wherein the color is selected by pointing one of the plurality of the color designation areas before the coordinate of the image to be display is inputted.

17. The device according to claim 13, wherein each of the pixels comprises liquid crystal.

18. The device according to claim 13, wherein the coordinate is inputted by using a pointing input device.