RCM1381U-A 데이터 시트보기 (PDF) - ROHM Semiconductor

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RCM1381U-A

24 x 24 dots multicolored largesized liquid crystal display unit

ROHM Semiconductor 

Liquid crystal displays

FOptical characteristics (Ta=25_C)

RCM1381U-A

(Note 1) Definition of response speed

Tr : Time for segment to darken 90% after selective wa-

veform switches to non-selective waveform.

φ = 180_, θ = 10_

Td : Time for segment to darken 90% after selective wa-

veform switches to non-selective waveform.

φ = 180_, θ = 10_

(Note 2) Definition of viewing angle (φ, θ)

(Note 3) Definition of contrast ratio

< Definition >

n

Luminance during application

of non-selective waveform

Contrast ratio =

Luminance during application

of selective waveform

Except, n = 1 with positive display and n = *1 with nega-

tive display.

< Measurement conditions >

Drive conditions : As per specifications

Viewing angle : φ = 180_

: θ = 10_

(Note 4) Principles of optical measuring equipment

(1) φ : Angle subtended by the Y-Y’-axis and the ob-

server’s position projected onto the XY-plane.

(2) θ : Angle subtended by observer and the normal

Z-Z’-axis (X-axis and Y-axis are positive)

(3) Maximum viewing angle: The direction with highest

contrast expressed at the time axis (refer to above

table).

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