OLED Lighting Frequently Asked Questions
What is OLED lighting?
Organic light emitting diodes (OLED) are a solid-state lighting technology composed of thin layers of organic compounds placed between two electrodes on a glass substrate. When current is applied, light is emitted from the organic layers evenly across the entire surface of the panel.
How is OLED different than LED?
LEDs are point source lights and OLEDs are large area surface emitters. The broad surface emission of OLEDs creates a naturally diffuse light that is glare-free and doesn’t require additional components like heatsinks, diffusors, and waveguides. OLEDs use carbon-based materials that can be adjusted to emit any desired color or create a full spectrum white output. LEDs typically use a high intensity blue light and add optical components to adjust the color and soften the intensity, increasing the complexity of the light.
How is OLED lighting different than OLED display?
OLED lighting and OLED display both use organic compounds to emit light, but their key differences can be attributed to application. To illuminate a whole room or be seen in the back of a car amidst daylight, OLED lighting is often much brighter than display applications and meets longer operational lifetimes. Additionally, OLED display products often require a thin film transistor (TFT) to control the many pixels, increasing cost and complexity.
OLEDWorks is incorporating our OLED lighting expertise into ultra-high-brightness microdisplay and direct-view display products.
How bright can OLED lighting be?
We have demonstrated OLED lighting that ranges from 1,000 cd/m2 to over 50,000 cd/m2. We are working every day to offer additional options for our customers and always tailor the performance of OLEDs to their specific project needs.
What drivers are compatible with OLED lights?
Any driver can be used if it meets the current and voltage requirements. When selecting a driver, please note that our OLED panels require drivers with a common cathode, or a high side driver.
Are OLED panels dimmable?
OLED lighting panels are 1 – 100% dimmable. OLEDs are compatible with both pulse width modulation (PWM) and amplitude modulation (AM) dimming. Because OLEDs are solid-state lighting (SSL) solutions they can be used with standard SSL control systems such as occupancy sensors, daylight systems, and dimmers.
Do OLED panels emit harmful blue light?
OLED lighting panels and fixtures are rated as exempt from any blue light hazard, which means they are not harmful to the skin and eyes. This is because OLEDs produce a broad blue spectrum with less short-wave blue and more long-wave blue, resulting in a lower blue light hazard rating and lower melatonin suppression.
Can OLED lighting panels be segmented? Are the segments individually addressable?
Yes, and yes. In our Atala automotive products, OLED panels include high-contrast segmentation that allows for customer personalization, added communication capabilities for the vehicle, and branding possibilities. In other applications, segmented OLED panels can be utilized for dynamic signage, information display, or unique branding opportunities and logo implementation.
What are the handling requirements of OLED?
OLED panels are glass-based and should be handled with the same care as you would a glass plate. Do not cut, puncture, twist or snap the OLED panel. Certain products are made using flexible glass and can be bent to a minimum radius.
Does OLEDWorks bin panels in manufacturing?
No. The OLED manufacturing process uses quality control methodologies to produce lot-to-lot color consistency and brightness.
What size OLED panels can you make?
While OLEDs can theoretically be made in any size, there are practical considerations in production that limit the possibilities of size. Very small panels are not practical due to unlit edges necessary for handling and FPC attachment, and large panels are limited by production capabilities and decreased yield. Speak with the OLEDWorks team for details on Atala design parameters.
Is dynamic color tuning available with OLEDs?
Dynamic color tuning is not available in our current products. However, it is possible and has been achieved in our labs as a demonstration.
Are OLEDs a sustainable light source?
OLEDWorks panels are mostly made of glass and are certified by ISO 14001 to be easily disposed of with glass waste. OLEDWorks products are also highly efficient and reduce energy consumption compared to incandescent lighting, halogens, and even some inorganic LED solutions. In the automotive industry, our partners estimate that replacing LED technology in the taillight would reduce taillight weight by 50%, resulting in improved fuel efficiencies and reduced emissions.