General Digital has developed a highly integrated and intelligent display head assembly for deployment in an airborne / cockpit application. In order to fit the 5" active matrix LCD display into a 4 x 5 ATI enclosure, the LCD had to be laser cut in one corner. To make the LCD sunlight readable, we manufactured our own low power, direct-lit, LED backlight, which efficiently provides high brightness without creating or dissipating undesired heat. An NVIS compatible version of the backlight is also available as an option. A microprocessor-based controller automatically adjusts the backlight brightness based on ambient light and temperature conditions reported from integrated sensors. The controller also controls an optical heater which is integrated to extend the LCD’s cold temperature operating range down to -40° C. The heater is optically bonded to the LCD to nearly eliminate any internal reflections produced by exposure to direct sunlight, thereby enhancing the LCD’s contrast in high ambient light environments.
FEATURES
5.0" diagonal LCD
640 x 480 (VGA) resolution
Laser cut LCD to fit customer-specified 4 x 5 ATI enclosure
Optically bonded ITO heater to LCD
Improved contrast by reducing internal reflections
Ruggedized display assembly
Custom LED backlight
Direct backlit design
Sunlight readable performance – up to 2200 nits @ 5.5 watts; up to 1000 nits @ TBD watts
Optional NVIS enhancement
Intelligent, microprocessor based heater / backlight controller
Allows cold temperature operation down to –40° C
Adjusts brightness based on customer-specified algorithm and ambient light sensor
Integrated thermal sensor provides control loop for heater performance, automatically adjusting backlight brightness to prevent overheating the LCD due to increased ambient temperature or solar load
TYPICAL APPLICATIONS
Cockpit display
General Digital has developed a highly integrated and intelligent display head assembly for deployment in an airborne / cockpit application. In order to fit the 5" active matrix LCD display into a 4 x 5 ATI enclosure, the LCD had to be laser cut in one corner. To make the LCD sunlight readable, we manufactured our own low power, direct-lit, LED backlight, which efficiently provides high brightness without creating or dissipating undesired heat. An NVIS compatible version of the backlight is also available as an option. A microprocessor-based controller automatically adjusts the backlight brightness based on ambient light and temperature conditions reported from integrated sensors. The controller also controls an optical heater which is integrated to extend the LCD’s cold temperature operating range down to -40° C. The heater is optically bonded to the LCD to nearly eliminate any internal reflections produced by exposure to direct sunlight, thereby enhancing the LCD’s contrast in high ambient light environments.
FEATURES
- 5.0" diagonal LCD
- 640 x 480 (VGA) resolution
- Laser cut LCD to fit customer-specified 4 x 5 ATI enclosure
- Optically bonded ITO heater to LCD
- Improved contrast by reducing internal reflections
- Ruggedized display assembly
- Custom LED backlight
- Direct backlit design
- Sunlight readable performance – up to 2200 nits @ 5.5 watts; up to 1000 nits @ TBD watts
- Optional NVIS enhancement
- Intelligent, microprocessor based heater / backlight controller
- Allows cold temperature operation down to –40° C
- Adjusts brightness based on customer-specified algorithm and ambient light sensor
- Integrated thermal sensor provides control loop for heater performance, automatically adjusting backlight brightness to prevent overheating the LCD due to increased ambient temperature or solar load
TYPICAL APPLICATIONS
