Specification No. TENTATIVE
Sheet
35
Toshiba Matsushita Display Technology Co.,Ltd
Date: 2008 – 11- 07
Date: - -
New No. LTA057A341F-14
Old No.
←
# Special
←&
Addition
←
Change
(4) Luminance Uniformity:
The Luminance should be measured at 9 positions on white raster (gray scale level L63).
Uniformity can be calculated by the following expression.
(5) Chromaticity:
The values(
x
,
y
) of chromaticity coordinates should be measured for the White, Red, Green and Blue Raster(gray
scale level L63) each with a photometer.
(6) Response Time:
The response time (
t
ON
,
t
OFF
) is measured with a photo detector (photodiode) which measures the light intensity of
the pixels.
t
ON
: Turn on time is the time for the light intensity of the pixels to go from 90% of its maximum to 10% of its
maximum.
t
OFF
: Turn off time is the time for the light intensity of the pixels to go from 10% of its maximum to 90% of its
maximum.
Photodiode : S1223-01 HAMAMATSU PHOTONICS K.K.
White Display: White Raster (gray scale level L63)
Black Display: Black Raster (gray scale level L0)
Luminance Uniformity =
Minimum Luminance
Maximum Luminance
X 100%
0
0
Horizontal Line Number [Pixel]
Ve
rtical
Line
Number
[Pi
xel]
Display Center
17.5mm
80
160
240
320
120
180
240
60
100%
90%
10%
0%
90%
10%
All Low
(Black Display)
(White Display)
(White Display)
All High
All High
(bright)
(dark)
Input Signal:
Light intensity
OFF
t
t
ON