Frequently Asked Questions

Circuit

Q: Will your TFT LCD Modules operate at 5V?: A: Many of the Optrex TFT LCDs operate at both 3.3 and 5V. Please consult the individual part specification for complete information.
Q: Do you have reverse scan function?: A: Our TFT LCDs have reverse scan function. Switching scanning direction will change the viewing direction of the LCD.

Q: Is MTBF data available for Optrex Displays?: A: MTBF data is not generally available. Under special circumstances MTBF data can be provided, but this is the exception, not the norm. Please contact your representative for further information.

Q: How do I specify an inverter for an Optrex Display?: A: Most inverter manufacturers have a cross reference by LCD manufacturer.

Q: How long will an LCD part number be supported?: A: For standard products, it is a minimum of 3 years. If a model change is required, then it will be backward compatible.
Q: Do your Optrex LCDs have CE certification?: A: CE certification is typically given to end products. Since the LCD is a component, it does not carry CE certification.
Q: Are your TFT LCDs RoHS compliant?: A: Many of the Optrex TFT LCDs are currently RoHS compliant. Please contact your Optrex sales representative for a complete schedule.
Q: Where can I find user manuals for Character and Graphic modules?: A: http://www.optrex.com/engineering/manuals.asp
Q: Do Optrex Passive LCDs have UL certification?: A: Although the Optrex Passive LCD modules do not have UL certification, the circuit board material is UL certified (grade 94V-0).
Q: Do Optrex Active LCDs have UL certification?: A: Optrex active matrix displays have UL certification US E158720. The panels are certified under the fabrication part number. Please contact your local sales representative to confirm that your display is certified.

Q: Are Optrex TFT LCDs sunlight readable?: A: Sunlight readability is a function of brightness contrast, reflectivity, and glare. Optrex currently has anti-reflection and antiglare available on several models.
Q: Is the response time of your TFT LCDs enough for moving picture?: A: Yes. Optrex TFT LCDs response time is 25ms.

Q: Are your backlights replaceable?: A: Most of our backlights for the active modules are serviceable. Please check the individual part specification for information on a specific LCDM.
Q: What is the expected life of a backlight?: A: There are 2 backlight technologies commonly used in Optrex Displays. CCFL (a.k.a. CFL, CCT, florescent tube) and LED.
1. CCFL can be rated as high as 50k hours.
2. LED backlights are rated as high as 60k hours.
Be sure to consult the individual part specification for information on a specific LCDM.

Q: Can Optrex provide initialization codes for their modules?: A: The User manuals contain initialization code information. If the information cannot be found there, then the module controller specification contains the information.

Q: What is the temperature range of Optrex TFT LCDs?: A: Operating temperature: -20 ~ 70 °C
Storage temperature: -20 ~ 80 °C
Q: What is the viewing angle of your LCDs?: A: All of our TFT LCDs meet or exceed 100 deg (H) and 90 deg (V). Please consult the individual part specification for details.
Q: What are the shock and vibration specs?: A: Consult the individual part specification for details.
Q: What is the lifetime of a CCFL backlight?: A: All CCFL backlights for TFT LCDs are rated to 50,000 hours minimum.
Q: What is Natural Color Matrix (NCM) technology?: A: NCM enables vivid reproduction of even the most subtle colors, such as pastels and flesh tones, and provides independent control of six colors without one color influencing any of the others. It supports 18-bit and 24-bit color and full motion video and compensates for any color shifts caused by LCD components such as CCFLs and optical films.; Read the NCM Technology WhitePaper.