When you check your display under the sunlight, many people have experiences
that they can not see the display clearly under sunlight, at this time, you
would need sunlight readable display, in this article, we would introduce
Sunlight readable tft for you, and we would introduce more display solutions that
with sunlight readable display in the coming articles.
To make a sunlight readable tft display, we would need a backlight that
with high brightness, the tft lcd display that with high brightness backlight,
because the high brightness tft lcd display could balance the light from the environment.
So how to make your display to high brightness tft, some people might
think, that would be easy, we just need to put as possible as more led chips
inside the backlight, but to a small tft lcd module, such as 2.4 inch sunlight
readable tft, because 2.4” tft is small sizes, there would be without enough
space for placing too many led chips, a regular 2.4” tft lcd backlight would
use 2~4 leds on the backlight edge, is regular brightness would be around 200
nits (the led chips have to place near the tft glass bonding sides, because
concerning the evenness of light transmit), such as for making 2.4 inch
sunlight readable, it is maximum can be put 6 led chips on this sizes, while as
a sunlight readable display, its brightness would be better up to 500 nits, so
the 2.4 inch tft lcd module with 6 led chips, its brightness would be around
350 nits if we don’t make other change.
High brightness tft
backlight efficiency
So we have to take other ways for enhance the backlight brightness,
another solution would be change the LED chips that with high efficiency
emitting light, with high efficiency led chips, the tft display brightness
could be increased up to 30%~50%, and more near to sunlight readable tft
display.
Beside these, we also have to concern the light transmit efficiency inside
the backlight, more D-BEF films is necessary for increasing the light
transmitting efficiency from the led chips, and in the same time, a well
designing light transmittance board would increase the the light efficiency in sunlight readable tft.
The heat issue of sunlight readable
lcd
By these ways, we could make tft display with high brightness tft
backlight, but, it is not enough now, we still have to think about the
materials, because as a high brightness tft backlight, it could produce more heat
than regular brightness tft lcd module, so we have to choose the materials that
could stand high temperature, and the whole backlight design have to be with
good heat radiation, otherwise, the sunlight readable tft lcd would be overheat
after long time working.
Sunlight readable tft lcd contrast
At the last, for making a sunlight readable tft, a high brightness lcd
is not all, we also have to concern the lcd display contrast, to achieve the
sunlight readable tft, a high contrast tft lcd is also necessary.
