Lc panel life time, Led backlight characteristics – Seiko Instruments G1216B1N000-3D0E User Manual

Page 7

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AN.No.G1216B1N000-3D0E

- 4 -

Brightness of non-selected dot (reflection) B

2

C =

Brightness of selected dot (reflection)

B1

t

off

t

on

Selected status

(display ON)

10%

B

2

B

1

0

(%)

Operating

voltage(V)

Brightness for selected
dot

Brightness
curve for non-
selected dot

Non-selected
status

100%

90%

V

opr

: Operating voltage

t

on

: Response time (rise)

f

FRM

: Frame frequency

t

of

: Response time (fall)

Note: Measurement must be made using a transmissive LCD panel.

V

opr

1/f

FRM

Note 4: Definition of response time

Note 3: Definition of contrast (C)

Brightness

(reflection)

Dark

Light

Brightness

(V)

Non-selected status

(display OFF)

1.7 LC panel life time

Life time

1

hrs

100,000 or more

25

°

C

±

10

°

C

<65%RH

Item

Unit

1

Definition of life time: the time up to occurrence of any of the following:

ž Contrast reduces to 30% of the initial value.
ž Current consumption becomes three times the initial value.
ž Orientation deteriorates significantly.
ž The display malfunctions.

Conditions

Standard

1.8 LED backlight characteristics

(1)

Absolute maximum ratings

mA

V

mW

°

C

°

C

200*

8

860

20 to +70

30 to +80

I

F

V

R

P

D

T

opr

T

stg

DC forward current

DC reverse voltage

Allowable dissipation

Operating temp. range

Storage temp. range

Item

Symbol

Standard

Unit

*

Forward current reduction characteristics: The absolute maximum rating of the forward current
varies depending on ambient temperature.

200

50

20

70

I

F

( mA )

Ta

(

°

C)

25

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