Frequently asked questions

General

Are LUMINEQ displays OLED or LCD?

LUMINEQ products are Thin Film Electroluminescent (TFEL) displays, not OLED nor LCD. Our displays are inorganic design and emit lights themselves. 

Our displays comprise a solid-state glass panel, an electronic control circuit, and a power supply. The glass panel, the heart of the assembly, consists of a luminescent phosphorous layer sandwiched between transparent dielectric layers and a matrix of row and column electrodes.

The circuit board, which contains the drive and control electronics, is connected directly to the back of the glass panel. A pixel on the display is lit by applying voltage to the row and column electrodes, thus causing the area of the intersection to emit light.

For more information about TFEL technology, please visit our Technology page.

I want to evaluate your displays. Can I buy a sample or a demo kit?

All of the LUMINEQ product lines offer demo products. The list of demo products can be found from our Rugged Displays, Transparent Displays, and In-Glass Displays page. You can request a quote on any of the individual demo product page or on the Contact us page.

 

What is the display operating temperature specification?

The operating temperature range of LUMINEQ displays is from -60 °C to 105 °C (-76°F to 221°F). Instant-on regardless of temperature. Since they are inorganic design, the performance is not affected by the temperature, so they are perfect for extreme conditions. 

What is the maximum size display available?

We offer displays with active area up to 240 x 180 mm. It is possible to use multiple displays together, depending on the final design. 

Do your displays have touch functionality?

Yes. The touch sensors are integrated directly in the functional display layer.

What is the display interface?

Our displays support the standard embedded interface SPI. Other supported interfaces include 1 or 2-bit, 4-bit, 8-bit µP, Parallel, and LVDS. 

Transparent Displays

The windshield of a car is required to have at least 70% transparency. How transparent are your displays?

LUMINEQ transparent segmented displays have over 80% transparency and matrix 70%. When the segmented display is laminated in glass, the transparency is 70%.

What’s the viewing angle of your display? Are there polarizers?

LUMINEQ transparent displays have a 360° viewing angle without polarizers. They work with all the sunglasses. 

What are the benefits of using LUMINEQ displays for HUD?

Using LUMINEQ in-glass laminated displays for HUD simplifies the setup and saves space, and doesn't have viewing angle limit. 

A typical HUD uses a projector system to project the information to the windshield in front of the driver. It contains three primary components: a projector, a combiner, and a video generation computer. While this complicated setup works for cars, it occupies valuable space in the car with a strict requirement for the projection angle. Moreover, it doesn't work for vertical windshields in buses, trucks, or industrial vehicles. 

We offer a simpler solution. By laminating a thin-film transparent display in glass, the information can be shown directly on the windshield without any extra setups. It saves space and may also bring the cost down. 

 

Rugged Displays

What’s the operating lifetime of LUMINEQ rugged displays?

The operating lifetime of LUMINEQ TFEL rugged displays is over 20 years. 85% of original brightness remains after 100 000 hours of usage.

Does temperature and/or humidity affect the lifetime?

LUMINEQ displays are inorganic solid-state design. So their lifetime is not affected by the external environments such as temperature and humidity. 

Custom Displays

Can I have transparent and non-transparent elements on one screen?

Yes. We've done projects for customers who wanted to combine transparent and non-transparent displays for the same application. See the demo image below.

TASEL-+-TFEL1200x628

 

What is the lead time for a customized display development?

It depends on the complexity of the display design. The typical development time of a custom display is 12-14 weeks. To start, you may request a custom display by submitting a form. The more information you provide to us regarding your project and design requirements, the more likely we can create a suitable proposal for you.

Need a custom display for your project?

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