LCD DISPLAY APPARATUS AND LCD DRIVING METHOD

• US 20110248969A1
• Filed: 03/24/2011
• Published: 10/13/2011
• Est. Priority Date: 04/08/2010
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: CHOI, Hoon, KIM, Kwang-youn
• Application Number:
  US13/071,024
• Publication Number:
  US 20110248969A1
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G09G 2320/041 Temperature compensation
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A liquid crystal display (LCD) apparatus and an LCD driving method are provided. The LCD apparatus drives an LCD module by applying temperature compensation to change driving timing according to temperature of the LCD module. Accordingly, the LCD apparatus may reduce a cross-talk occurrence rate in low temperature.

Claims

1. A liquid crystal display (LCD) apparatus, comprising:

an LCD module which displays an input image; and

a controller which drives the LCD module by applying temperature compensation to change driving timing of the LCD module according to temperature of the LCD module.

2. The LCD apparatus as claimed in claim 1, wherein the controller comprises:

a timing controller which controls the driving timing of the LCD module based on the input image; and

a main controller which controls the timing controller to control the driving timing based on the input image,

wherein the main controller controls the timing controller to drive the LCD module by applying the temperature compensation to change the driving timing controlled based on the input image according to the temperature of the LCD module.

3. The LCD apparatus as claimed in claim 2, further comprising:

a temperature sensor which senses the temperature of the LCD module,

wherein the main controller applies the temperature compensation according to the temperature of the LCD module sensed by the temperature sensor.

4. The LCD apparatus as claimed in claim 3, further comprising:

a storage unit which stores temperature compensation data comprising a plurality of temperature compensation values corresponding to a plurality of temperatures, respectively,

wherein the main controller extracts from the storage unit a temperature compensation value corresponding to the temperature, and applies the temperature compensation using the extracted temperature compensation value.

5. The LCD apparatus as claimed in claim 4, wherein the main controller controls the timing controller to correct a driving signal to drive the LCD module according to the extracted temperature compensation value.

6. The LCD apparatus as claimed in claim 2, wherein the main controller applies the temperature compensation according to a setting value set by a user'"'"'s manipulation.

7. The LCD apparatus as claimed in claim 1, wherein the main controller comprises:

a timing controller which controls driving timing of the LCD module according to the input image; and

a main controller which controls the timing controller to control the driving timing according to an input image,

wherein the timing controller drives the LCD module by applying the temperature compensation to change the driving timing according to the temperature of the LCD module.

8. The LCD apparatus as claimed in claim 7, further comprising:

a temperature sensor which senses the temperature of the LCD module,

wherein the timing controller applies the temperature compensation according to the temperature of the LCD module sensed by the temperature sensor.

9. The LCD apparatus as claimed in claim 8, further comprising:

a storage unit which stores temperature compensation data comprising a plurality of temperature compensation values corresponding to a plurality of temperatures, respectively,

wherein the timing controller extracts from the storage unit a temperature compensation value corresponding to the temperature, and applies the temperature compensation using the extracted temperature compensation value.

10. The LCD apparatus as claimed in claim 9, wherein the timing controller corrects a driving signal to drive the LCD module according to the extracted temperature compensation value.

11. The LCD apparatus as claimed in claim 7, wherein the timing controller applies the temperature compensation according to a setting value set by a user'"'"'s manipulation.

12. A method of driving a liquid crystal display (LCD), the method comprising;

applying temperature compensation to a driving signal to drive an LCD module, according to temperature of the LCD module; and

changing driving timing of the LCD module according to the driving signal to which the temperature compensation is applied.

13. The LCD driving method as claimed in claim 12, further comprising:

sensing the temperature of the LCD module by a temperature sensor.

14. The LCD driving method as claimed in claim 13, further comprising:

storing temperature compensation data comprising a plurality of temperature compensation values corresponding to a plurality of temperatures, respectively; and

extracting a temperature compensation value corresponding to the temperature from the stored temperature compensation data,

wherein the applying the temperature compensation is performed using the extracted temperature compensation value.

15. The LCD driving method as claimed in claim 14, wherein the applying the temperature compensation comprises applying the temperature compensation to correct the driving signal according to the extracted temperature compensation value.

16. The LCD driving method as claimed in claim 12, further comprising:

receiving an input of a setting value regarding the temperature compensation by a user'"'"'s manipulation,

wherein the applying comprises applying the temperature compensation according to a setting value set by a user'"'"'s manipulation.

17. An apparatus for compensating temperature of a liquid crystal display (LCD), the apparatus comprising:

a controller which generates a driving signal used to drive the LCD based on an input image to be displayed on the LCD, according to a temperature of the LCD.

18. The apparatus of claim 17, wherein the driving signal is generated by adjusting a current, a voltage, or a duty ratio applied to the LCD, according to the temperature of the LCD.

19. The apparatus of claim 17, wherein, by generating the driving signal according to the temperature of the LCD, the controller changes driving timing of the LCD which is controlled according to the input image.

20. The apparatus of claim 19, wherein the temperature of the LCD is temperature of a center area of the LCD.