System for thermally controlling displays
View Patent ↗Exemplary embodiments provide a system for thermally controlling an electronic display. A glass substrate containing a pyrolytic electrically conductive layer is utilized. The electrically conductive layer may be used as a passive thermal insulator or may be electrically energized to further heat the glass substrate. The glass may be used with a closed loop plenum which may further heat/cool the display. Additional glass layers may be added in order to polarize light or provide anti-reflective properties.
1. A system for thermally controlling an electronic display having an intended observer comprising:
a glass substrate placed between the electronic display and the intended observer;
an air gap defined between the electronic display and the glass substrate;
a plenum in gaseous communication with the air gap;
a first fan positioned to force isolated gas through the plenum and air gap;
a second fan positioned to force ambient gas over the plenum; and
a pyrolytic electrically conductive coating disposed on a surface of the glass substrate.
2. The system of claim 1 further comprising:
a power source electrically connected to said pyrolytic electrically conductive coating.
3. The system of claim 1 wherein:
said glass substrate having a pyrolytic electrically conductive coating has a sheet resistance between 10 and 20 Ohms/sq.
4. The system of claim 1 wherein:
said glass substrate having a pyrolytic electrically conductive coating has a sheet resistance between 55 and 75 Ohms/sq.
5. The system of claim 1 wherein said electronic display is a liquid crystal display (LCD).
6. The system of claim 1 wherein said electronic display is any one of the following: light emitting diode (LED), organic light emitting diode (OLED), field emitting display (FED), cathode ray tube (CRT), and plasma display.
7. A system for thermally controlling a liquid crystal display (LCD), said system comprising:
an LCD which faces an intended observer and contains a backlight;
a glass substrate placed between the LCD and the intended observer;
an air gap defined between the LCD and the glass substrate;
a plenum in gaseous communication with the air gap;
a first fan positioned to force isolated gas through the plenum and air gap;
a second fan positioned to force ambient gas over the plenum and behind the backlight; and
a pyrolytic electrically conductive coating disposed on a surface of the glass substrate.
8. The system of claim 7 wherein:
said glass substrate having a pyrolytic electrically conductive coating has a sheet resistance between 10 and 20 Ohms/sq.
9. The system of claim 7 wherein:
said glass substrate having a pyrolytic electrically conductive coating has a sheet resistance between 55 and 75 Ohms/sq.
10. The system of claim 7 further comprising:
a polarizer placed between the intended observer and the glass substrate.
11. The system of claim 10 further comprising:
an anti-reflective layer placed between the intended observer and the polarizer.
12. The system of claim 11 wherein said anti-reflective glass has a reflectance percentage of 1.0 - 3.0 percent.