M215H1-L03 データシートの表示（PDF） - Unspecified

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M215H1-L03

TFT LCD Approval Specification

Unspecified 

3.2 BACKLIGHT UNIT

Parameter

Symbol

Lamp Input Voltage

VL

Lamp Current

IL

Lamp Turn On Voltage VS

Operating Frequency

FL

Lamp Life Time

LBL

Power Consumption

PL

Min.

--

3

-

-

40

40000

-

Doc No.: 400035745

Issued Date: 02,Oct, 2009

Model No.: M215H1-L03

Approval

Value

Typ.

870

7.0

-

-

55

50000

24.36

Max.

957

8

1370(25°C)

1770(0°C)

80

-

-

Unit

VRMS

mARMS

VRMS

VRMS

KHz

Hrs

W

Note

IL = 7.0mA

(1)

(2)

(2)

(3)

(5) IL = 7.0 mA

(4), IL = 7.0 mA

Note (1) Lamp current is measured by current amplify & oscilloscope as shown below:

LCD

Module

HV+ (Pink)

1

LV (White)

2

HV- (Blue)

A

LV (Black)

HV+ (Pink)

LV (White)

HV- (Blue)

1

LV (Black)

2

Current

A

Probe

Inverter

Current

Amplify Oscilloscope

Ta = 25 ± 2 ºC

Measure equipment:

Current Amplify: TektronixTCPA300

Current probe: Tektronix TCP312

Oscilloscope: TDS3054B

Note (2) The voltage that must be larger than Vs should be applied to the lamp for more than 1 second

after startup. Otherwise, the lamp may not be turned on normally. It is the value output voltage of

NF circuit.

Note (3) The lamp frequency may produce interference with horizontal synchronization frequency from the

display, which might cause line flow on the display. In order to avoid interference, the lamp

frequency should be detached from the horizontal synchronization frequency and its harmonics

as far as possible.

Note (4) PL = IL ×VL X 4

Note (5) The lifetime of lamp can be defined as the time in which it continues to operate under the

condition Ta = 25 ±2 oC and IL = 7.0 mA until one of the following events occurs:

(a) When the brightness becomes or lower than 50% of its original value.

(b) When the effective ignition length becomes ≦ 80% of its original value.

(The effective ignition length is a scope that luminance is over 80% of that at the center point.)

Note (6) The waveform of the voltage output of inverter must be area-symmetric and the design of the

inverter must have specifications for the modularized lamp. The performance of the Backlight,

such as lifetime or brightness, is greatly influenced by the characteristics of the DC-AC inverter for

the lamp. All the parameters of an inverter should be carefully designed to avoid producing too

much current leakage from high voltage output of the inverter. When designing or ordering the

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