Transflective TFT Display VS High Brightness TFT
Blaze Display Technology Co., Ltd. | Updated: Nov 27, 2018
What is transflective TFT?
Transflective TFT has a transparent reflector 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 has 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 becomes 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 are very energy efficient, making them ideal for battery powered devices and mobile applications.
High brightness TFT LCD VS transflective TFT LCD:
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 for your outdoor display.
Transflective TFT-LCD modules have both “transmissive” and “reflective” modes.Transflective TFT LCD displays screen become more and more popular because of the demand of display working in daylight environments and direct sunlight, it is a good solution for daylight readable display
Both display modes work together for enhanced performance.
In darker environments, the “transmissive” mode is dominant with emissions from the display’s backlight.
In daylight or bright environments, the “reflective” mode of the display is more dominant through reflectance from the internal mirror structure.
Transflective TFT display screen have a layer of reflector in front of the backlight. The incoming light is reflected on the reflector layer and used to illuminate the TFT display. As the transfelctive screen, Transflective TFT LCD display modules have both "transmissive" and "reflective" characters.
Transflective displays TFT are characterized by well readability in bright ambient light and direct sunlight. While transmissive TFT LCD displays can only be operated with a backlight, transflective screen feature the reflector on the color filter of TFT cell.Therefore, its incoming ambient light is reflected on the TFT reflective layer and reflect to illuminate the display. As a result, the readability of the content in very bright sun light is perfect even without backlight.
Advantage of transflective screen:
Another advantage of transflective display TFT modules is power savings compared to traditional “transmissive- only” displays. transflective LCD display combines the advantages of transmissive and transflective LCD displays, we also call it transreflective screen, the transflective screen are perfectly readable under almost any ambient light conditions. In addition, they are very energy efficient, making 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 environments because the “reflective” mode is dominant.
Reflective ratio about transflective TFT LCD display module:
Transflective TFT LCD display is a true transflective TFT LCD display, the reflector layer is combined the color filter of TFT LCD cell, and it has a higher transflective ratio. Transflective TFT LCD have 6.8% reflective ratio, while if some other transflective TFT LCD module manufacturer, if they only used the transflective polarizer on the backside of transmissive TFT LCD, its reflective 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 TFT LCD display.
The power consumption drops to the consumption of the TFT cell, which leads to a lower power loss and a considerably reduced heat generation. Transmissive displays, on the other hand, offer good readability in direct sunlight only with a very bright backlight and higher power consumption.
But Transflective TFT-LCD modules had a “reflective” mode where color reproduction was reduced compared to “transmissive” mode displays. Maclight transflective TFT LCD display improved the TFT-LCD panel structure to expand the range of color reproduction in the “reflective” mode, realizing a new transflective TFT-LCD module capable of displaying colors as vivid as the “transmissive” mode.
Transflective TFT LCD display is perfect for outdoor, handlheld and battery powered applications we have a range of standard and customized TRUE TRANSFLECTIVE TFT Displays.
The power consumption of transflective TFT display and high brightness TFT LCD
As for the 3.5”high brightness TFT LCD, both the TFT LCD current value is 10MA(typ.), the TFT LCD glass power consumption is almost similar to transflective TFT and high brightness.
The big gap is from the backlight , the backlight current and voltage of 3.5” high brightness TFT LCD is If=20MA,Vf=18.0V, 6 LED chips, and the 2.2 inch transflective TFT LCD backlight’s currents is If=20MA,Vf=12.8V, 4 led chips, that is the high brightness power consumption would be higher around 50% than transflective TFT LCD.
