Device and method for improving the response time of liquid crystal displays
View Patent ↗The invention relates to a display device, comprising an illumination means and a liquid crystal display. The illumination means also serves to heat the liquid crystal display, and control means may control the brightness of an image displayed via the liquid crystal display.
1. A display device comprising:
an illumination device configured to illuminate and heat a liquid crystal display;
a temperature sensor configured to determine a temperature of the liquid crystal display and to output a signal indicative of the temperature; and
a control device communicatively coupled to the illumination device and to the temperature sensor, wherein the control device is configured to determine an illumination intensity factor based on the signal, to control an intensity of the illumination device based on the illumination intensity factor, and to adjust a brightness of image data received by the control device based on the illumination intensity factor.
2. The display device according to claim 1 , wherein the illumination device comprises an LED.
3. The display device according to claim 1 , wherein the control device is configured to receive and to process the image data.
4. A method for operating the display device according to claim 1 , wherein by heating the illumination device, the liquid crystal display is heated as well.
5. The method according to claim 4 , wherein the intensity of the illumination device is adjusted such that an image perceived by an observer remains substantially unchanged as far as its brightness is concerned.
6. The method according to claim 5 , wherein a brightness value of image pixels of the image data is divided by the illumination intensity factor to produce an adjusted value, and the adjusted value is kept constant by the control device.
7. The display device according to claim 2 , wherein the LED comprises an intense LED.
8. The display device according to claim, wherein the LED comprises an OLED.
9. The display device according to claim 1 , wherein the temperature sensor comprises a negative temperature coefficient thermistor.
10. The display device according to claim 1 , wherein the temperature sensor comprises a positive temperature coefficient thermistor.
11. The display device according to claim 1 , wherein the image data comprises digital image data.