Today, displays are fully integrated into day to day life. Parkingmachines, ovens and our smart phones. We all control them through a display.
But different environments and users require different display technologies. Which technologies are available? What are some specifications to take into account? And which technology fits your application best?
Keep on reading to find out!
Three modern technologies
Displays are available in different sizes and technologies. Each technology offers specific advantages and disadvantages and are suites for specific applications. Which display fits your application best all depends on many things like environments and user.
We focus on the following three display technologies:
Active displays offering very sharp image, bright colours and quick response time. Suitable for both inside and outside projects.
Active displays without backlight and very good display image. Very sharp image quality, bright colours and fast response time.
Passive displays in three versions: segment, character and graphic. Less costly, long availability and suitable for many applications.
What factors to take into account
Maatwerk vs. standaard Displays
Many of our LCD displays are standard products, delivered straight from the factory. But today, more and more companies decide to customize a part of or the complete display panel.
Sometimes an adjusted cable, bezel or backlight is a better fit for the display solution. A partly adjusted display solution is called a customized display.
The final option is to completely custom design a display. The possibilities for custom displays are endless. However, try to estimate how many custom displays you will be needing in total. Minimum order quantities for custom displays are often higher than for standard displays.
Not sure what display solution is best for your application? We are happy to help! Talk to one of our product specialists to find out.
Sunlight readability has to be taken into account when using LCD displays in an outdoor application. Using a display outside requires taking in account temperatures and sunlight readability. Ambient light surrounding the LCD display can make a standard transmissive display panel hard to read, but using a reflective or transflective display panel can solve this issue.
Our product specialists can help you select the right solution.
Sunlight Readability Display Panel
When using the display in an outdoor environment, you need to consider the level of sunlight readability. Ambient light can play a big part in being able to read the display. A standard transmissive display may not be enough in these situations. But a reflective or transflective display can solve the problem.
- Transmissive LCD displays require backlight as a light source to show a picture and have no reflective film in the back of the screen.
- Reflective LCD displays have a reflective film in the back of the screen and no backlight. Instead this display panel uses ambient light, such as sunlight or a lamp, as a light source to show a picture. Examples of reflective LCD displays are the ones used in e-readers.
- Transflective LCD displays use the advantages of both transmissive and reflective LCD displays. It has a semi-reflective film in the back of the screen, but has backlight as well. Light from the front is stopped by the reflective layer, while the backlight can still go through from the back. This means a transflective display panel can be read well in bright and dark situations.
Brightness & Backlight
A backlight in a display is used to illuminate the screen. Today, LED backlighting is the most used kind of backlight. Up until a couple of years ago, CCFL (fluorescent) was a well known type of backlight. But LED backlighting is much more eco-friendly than CCFL, uses less energy and produces a better image quality. Next to that, the life cycle of LED backlighting is twice as high (50,000 hours) as that of CCFL (25,000 hours).
A display backlight needs to produce enough light. When the light production is too low, the screen will be pale and lose brightness. The amount of light a display let through is expressed in candelas/m2, or cd/m2. The higher the candelas, the better. As this determines the brightness of the display screen. The readability of a display depends on the brightness of the screen and the ability to reflect ambient light.
A display can be supplied with a standard brightness level, but many customers choose to adjust this to their specifications, giving them the best possible brightness for their application.
Contrast and Viewing angles
The contrast ratio measures the purity of the image colours shown on a display. When the contrast is high, the colours are bright and sharp. This creates a nicer image. The viewing angle of a display is partly determined by the contrast of a display. The viewing angle tells you from what angle the display's readability is best. For example, a laptop screen can be viewed best from a direct angle in front of the laptop. Someone standing behind or beside you won't be able to read the screen.
Many displays have a wide viewing angle. Every manufacturer offers different viewing angles. Viewing angles are mostly set by technology, but can also be changed by adjusting the polarizers. This means the display is customized. Adjusting polarizers changes the viewing angle, it does not improve the viewing angle.
Depending on the LCD displays you will be using, there are different types of display interfaces. The most common used technology is LVDS, or Low Voltage Differential Signalling.
For high resolution display panels LVDS is the standard used. LVDS is high speed and low power. Making it perfect for several applications and industries. It also has low noise emission and high noise rejection qualities. This makes it a reliable choice for surveillance, aviation and military applications.
Smaller sized display panels with lower resolutions are more flexible when choosing a display interface. Other technologies used are TTL, RGB and I2C.
Displays can have either of three temperature ranges:
- Consumer: 0 tot +50 °C
- Industrial: -20 tot +70 °C
- Automotive: -30 tot +85 °C
The surrounding area of the display (environment) and the application itself are determining for the needed temperature range of the display. Temperature has a big impact on the life cycle of the display. We can advise you on the right temperature range for your application.
LCD Displays Kits
What if your application calls for a complete LCD displays solution instead of a single display panel? An LCD display kit is the answer. LCD Display kits consist of a display panel, interface board, inverter and cables. They can be expanded with a USB/LAN solution, RGB converter board and touchscreen. This makes LCD display kits very flexible to compose to the specifications of your LCD display application.
Touch screens, Bezels and Cables
PCAP and resistive touch screens, multi touch, protective glass and polarizers.
Displays cables and connectors in different lengths and other custom options.
Open frame, chassis and panel mount bezels for display solutions.
SUPPORT & REPAIR
In-House Support and Repair Service
When purchasing a solution or product from SKY-Technology you will also enjoy the benefits of a support and repair service, located in-house. This means not having to deal with external service companies. The International Service and Support Group (ISSG) takes care of the SKY-Technology support and repairs and is located in the same office building.
QUESTIONS OR ADVICE?
Talk to a product specialist
firstname.lastname@example.org | 0251 7002 82