transmissive lcd display brands

Sunlight readable tft lcd display included color transflective tft lcd and high brightness tft lcd,both high brightness tft LCD (transmissive display) and transflective lcd are viewable under sunlight conditions, butwhich one would be the most suitable sunlight redable lcd display for your application? let"s see the comparison in the following article.

Compare to transmissive display, transflective TFT has a reflector layer inside tft lcd cell that is in front of the backlight. The incoming light is reflected and used to illuminate the TFT display. Transflective TFT have both "transmissive" and "reflective" modes.

Both display modes work together for enhanced performance, as a result, the performance of the display content in very bright light is perfect even without any backlight on the transmissive tft lcd. Customers using a transflective TFT LCD module can save power by reducing or turning the display"s backlight off during bright environments.

Transflective TFT become more popular since the demand of requiring good performance in bright environments and direct sunlight.so that the transflective TFT displays are perfectly readable under almost any ambient light conditions. In addition, they arevery energy efficient, making them ideal for battery powered devices and mobile applications.

In the following, we make a full comparison about the high brightness tft lcd vs transflective tft lcd display in the technical parameters, display performance, and cost evaluation. After read this article, you would get a deep comprehension about sunlight readable display tft, and how to select sunlight readable tft lcd display, to choose a most suitable transflective tft lcd or high brightness tft lcd (transmisive display) for your outdoor display.

them ideal for battery powered devices and mobile applications.Customers using a transflective screen can save power by reducing or turning off the display’s backlight during bright

ratio only about 2%, they are not a significant transflective tft lcd, it is the alternative transflective lcd solution that the reflective layer is located on the back polarizer, not in the color filter, the 2% reflective ratio is too low to say it is transflective

its cost around 18 USD,So transflective tft lcd is good, but are you ready to pay more cost about your sunlight readable tft lcd display, I hope you had a answer after read this article.

When transflective LCD technology used in regular TFT LCD with a reflective function. via the imposed reflective function, the modified tft LCD can reflect the ambient light passing the LCD cell and utilize the reflected light beams as its illumination. The stronger the ambient light is, the brighter the LCD will be needed.Transflective LCD modules are with both transmissive and reflective properties, and the image display effect depends on the conditions of the ambient environment. for transflective tft lcd, the tft lcd display uses a backlight with a transmissive property in dark environments, and uses external light with a reflective property in bright environments. so the transflective lcd method allows for better color performance than transmissive tft lcd with same backlight brightness, then the transflective lcd provides similar color characteristics similar to the transmissive mode that indoor. The net Reflectance rate of regular Transflective LCD solution is from 0.9% to 8% varied from panels selected. For example, with 1.3% net reflectance rate and under 10,000 ambient sunlight conditions, the brightness gain is around 130 nits added to original backlight brightness.

You could also find more information about "what makes best sunlight readable lcd display" here :https://www.szmaclight.com/new/Sunlight-readable-display.html

A sunlight-readable display is necessary for most outdoor use, whether it is a rugged tablet, a kiosk, or an agriculture application. Sunlight readability is defined quite differently by different display manufacturers. Some say that a luminance of 1000 nits is the bottom floor for true sunlight readability, but often manufacturers will say displays are sunlight readable with brightnesses of half that. And, sunlight viewability is more complicated than a simple luminance measurement. Contrast ratio is also very important. Contrast ratio is independent of brightness, and the contrast ratio itself can change, depending on background light levels. Therefore, displays are best compared side by side in bright noonday sun. There are four methods to make sunlight readable display, and one trick:

By applying more backlights, display brightness can be increased to 1000 nits or more. The added light overpowers ambient light and make the screen viewable. This can be thought of as a brute-force method. This is our 1000 nits rugged tablet.

However, adding more backlights always means greater power consumption. On a 7” kiosk display, it can consume ten watts or more. Nearly all of that power goes to heat, requiring much more cooling. And since such displays are made for the industrial market in small quantities, costs are much higher than ordinary LCD displays.

Transflective (transmissive-reflective) displays are hybrids. Two different methods for display are used. Under bright illumination the display acts mainly as a reflective display, with the contrast being constant with illuminance. In dim light, the backlight provides needed illumination. With a special semi-reflective filter in the back of the display stack , it can reflect the sunshine outdoor, while the back light can also offer the light penetrating the semi reflective file in the back of the screen.

Transflective technology has been widely applied by many rugged tablet manufacturers, like Motion Computing, Panasonic, Getac, and Winmate. Transflective technology is much more expensive than ordinary rugged tablet displays.

Optical bonding injects a clear, optical-grade resin into the gap between the LCD panel and the protective outer glass, bonding them together. This fills the air gap between the two, eliminating two reflective surfaces. An anti-reflective coating is then applied to the outside of the protective glass, minimizing surface reflections as well.

Finally, there is one trick that anyone can use to make any display much more viewable in sunshine – wear a hat with a broad brim, and wear a dark-colored shirt. This minimizes eyestrain from direct sun, and reduces stray reflections on the display. It sounds silly, but it makes a real difference.

There are a few types of LCD panels out in the market currently. We will briefly go over each type of LCD panel to distinguish the differences and how effective each can be.

A transmissive LCD has all of the light provided from the backlight of the LCD Panel. A transmissive LCD looks great in indoor environments but can be quite dim when in direct sunlight. Sunlight is about a 1,000 times brighter than that of a typical LCD Backlight, so it can adversely affect the appearance of the LCD. Generally, direct sunlight can cause the monitor to look very dim outdoors.

A reflective LCD involves a reflective mirror layer on the LCD or in the LCD. All light that is used to view the LCD goes through the LCD, bounces off of the reflective mirror layer and goes through the LCD again to display. This applies to both indoor and outdoor applications so a reflective LCD is not of the highest quality when used as a display. A reflective LCD generally uses a front light display so many factors can compromise the performance since the light has to go through the LCD twice.

A transflective LCD, which is a combination of a transmissive and reflective LCD, begins with a transmissive LCD and adds a partially reflective mirror layer between the LCD and backlight. When a transflective LCD is used indoors the illuminated screen comes from the backlight. When the LCD screen is used outdoors, light has to go through the LCD twice before displaying, once on the way into the LCD and one more time out with the backlight. This can cause the LCD to not be an optimal solution when being used as an outdoor monitor compared to being used as an indoor monitor. There is also a certain point that makes the LCD very ineffective. At this point, it is caused by just enough sunlight overpowering the backlight, but also not producing enough light to be reflected back from the reflective mirror to produce an adequately illuminated LCD.

Caltron uses transmissive LCD’s on all of our monitors, whether it is our standard Open-Frame LCD Monitors, LED Backlit Monitors or High Bright Sunlight Readable Monitors. Caltron feels that a transmissive can be most effective for a variety of applications. Although there can be some hindrance to direct sunlight, overall, it is still the most effective panel. Using a high bright panel can help to make an application more feasible in direct sunlight. Creating some sort of shading for the unit will allow for the optimal display for a transmissive LCD.

Since no backlight is used, the display requires very little energy in order to operate. This means: a lot of money can be saved over time. Think about the costs of a drive thru menu that stays running all year for sixteen whole hours a day. Those costs add up. Can you imagine spending $20k a year – just to power your display? That would cut your profits in a very noticeable way. So, I bet you’d be pretty pleased to find such a low-energy alternative.

Reflective displays really are a unique thing. You don’t have to hide them from the sun. You don’t have to shield your screen with your hand in order to eliminate glare. You don’t have to tilt it at funny angles that cause your neck to throb in pain, just so that you can read what’s on the screen. Funny, because those are our natural reactions whenever LCD and sunlight combine. Not with a reflective display though.

You could almost compare a reflective display to a piece of paper in the way that it becomes more visible when light is shining directly on it. It’s really bizarre to see, and you almost have to witness it in order to wrap your head around it, because it’s totally unlike what you’re used to.