LM230WF5
Liquid Crystal Display
Product Specification
Notes :
7. Luminance Uniformity - angular – dependence (LR& TB)
TCO 5.0 Luminance uniformity – angular dependence, is the capacity of the VDU
to present the same Luminance level independently of the viewing direction.
The angular-dependent luminance uniformity is calculated as the ratio of maximum luminance to
minimum luminance in the specified measurement areas.
- Test pattern : Full white 4˚× 4˚square size, back ground shall be set to 80%
image loading, RGB 204, 204, 204
- Test luminance : ≥200cd/㎡
- Test point
: 5-point
- Test distance : D * 1.5
- Test method : LR = ((Lmax.+30deg. / Lmin. +30deg.) + (Lmax. -30deg. / Lmin. -30deg.)) / 2
TB = ((Lmax.+15deg. / Lmin. +15deg.
)
FIG. 12 Luminance Uniformity angular dependence
< Luminance uniformity - angular dependence measuring point >
H
H/10
H/10
V/10
V/2
V
D
V/10
H/2
Ver. 0.0
Feb. 16, 2012
23 / 30
LG [ LG SEMICON CO.,LTD. ]
