Note 3: Definition of contrast (C) | Note 4: | Definition of response time | ||||||||
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| (V) | Vopr | ||||||||
C = | Brightness of |
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| Brightness of selected dot (reflection) | B1 |
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(%) | B2 |
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| Brightness |
| status | (display ON) | (display OFF) | |||
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| curve for non- |
| Light |
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| 10% | |
Brightness |
| selected dot |
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| 90% |
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(reflection) |
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| 100% |
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| Brightness |
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| Dark |
| ton |
| toff |
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| Operating |
| Vopr | : Operating voltage | ton | : Response time (rise) | ||
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| fFRM | : Frame frequency | tof | : Response time (fall) | ||
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| Note: Measurement must be made using a transmissive LCD panel. | |||||
1.7 LC panel life time
Item | Conditions | Standard | Unit |
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Life time1 | 25°C±10°C | 100,000 or more | hrs |
| <65%RH |
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1Definition of life time: the time up to occurrence of any of the following:
žContrast reduces to 30% of the initial value.
žCurrent consumption becomes three times the initial value.
žOrientation deteriorates significantly.
žThe display malfunctions.
1.8LED backlight characteristics
(1)Absolute maximum ratings
Item | Symbol | Standard | Unit | |
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DC forward current | IF | 200* | mA | |
DC reverse voltage | VR |
| 8 | V |
Allowable dissipation | PD |
| 860 | mW |
Operating temp. range | Topr | −20 | to +70 | °C |
Storage temp. range | Tstg | −30 | to +80 | °C |
*Forward current reduction characteristics: The absolute maximum rating of the forward current varies depending on ambient temperature.
200
IF ( mA )
50
−20 | 25 | 70 | Ta (°C) |
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