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PDF ( 数据手册 , 数据表 ) BM320240A

零件编号 BM320240A
描述 LCD Module
制造商 EASTRISING
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BM320240A 数据手册, 描述, 功能
Confidential Document
EASTRISING CORPORATION
LCD Module Specification
ITEM NO : BM320240A
R&D Dept.
Q.C. Dept.
Eng. Dept.
Prod. Dept.
Version:
Issued Date:
2004/11/18
Sheet Code:
Total Pages:
Free







BM320240A pdf, 数据表
LCD MODULE
BM320240A Series
„ FL BACKLIGHT CHARACTERISTICS
Version:1.0
Nov 18 2004
 Absolute Maximum Ratings
Item
Circuit voltage
Lamp current
Symbol Conditions
Standard
Unit
Min. Typ. Max.
VS ---
IFL
Ta= 25°C
---
--- 240 Vrms
--- 6 mArms
 Electrical Characteristics
Item Symbol Conditions
Standard
Unit
Min. Typ. Max.
Lamp voltage*1
VFL
Ta= 25°C
195
220
235 Vrms
Starting voltage*2
VS
Ta= 0°C
---
--- 400 Vrms
Lamp current*1
IFL
Ta= 25°C
4.0
5.0
6.0 mArms
Frequency*1
fFL
Ta= 25°C
50
---
60 kHz
increases,
*1 FL inverter: 13585AQ17
*2 The voltage capable of starting discharge and keeping stable sischarge.When the voltage gradually
glow discharge will increase and FL tube terminals will be connected electrecaly.
 Optical Characteristics
Item Symbol Conditions
Surface brightness*1*2*4
Bp Ta= 25 ±3°C
Distribution of brightness*1*3 [Bp 30~85%RH
Standard
Min. Typ. Max.
80 110 ---
--- --- 30
Unit
cd/m2
%
*1 Measurement 30 minutes after turning on of FL tube
FL inverter: 13585AQ17
FL inverter output voltage and freguency: 220V, 59kHz
LCD driving conditions: Optimum Vopr
LCD display pattern: ALL off display (all data=“L”)
*2 Initial brightness of LCD panel center
*3 Definition of [Bp (Distribution of brightness)
[Bp=(Bp(max.) - Bp(min.))/Bp(max.) × 100%
Bp(max.)=Maximun brightness of 5 measuring points
Bp(min.)=Minimem brightness of 5 measuring points
5 measuring points:
*4 Ambient temperature affects brightness of FL tube. The reason is that radiation efficiency is depends on
steam pressure of mercury enclosed in the tube. Practically the brightness is low in the cool. As the steam
pressure of mercury is also low just after turning on of FL tube, the brightness is low. The heat generated
by FL tube will raise temperature on the tube surface, then brightness will increase with a rise in mercury
steam pressure.
 Life
Item
Life*1
Conditions
Ta= 25 ±3°C
Standard
Min. Max.
15000
---
Unit
hrs
*1 FL driving condition: IFL (Lamp current )=5 mArms
Time until the decreases to half of the initail brightness, or time until “not lit”because of increase in FL
discharge start voltage.
7 o f 34
Free Datasheet http://www.Datasheet4U.com







BM320240A equivalent, schematic
LCD MODULE
BM320240A Series
Version:1.0
Nov 18 2004
3.2.2 SL1, SL2
SL1 and SL2 set the number of lines per scrolling screen. The number of lines is SL1 or SL2 plus one. The
relationship between SAD, SL and the display mode is described below.
Table 14. Text display mode
W/S Screen
First Layer
First screen block
Lower screen
SAD1
SL1
SAD3
(see note 2)
Set both SL1 and SL2 to ((L/F)/2+1)
Screen configuration example:
Second Layer
SAD2
SL2
SAD4
(see note 2)
SAD2
SAD1
1
SL1 Character display page
Graphics display page 2
SAD3
Character display page
Graphics display page 4
(SAD4)
Laver 1
Laver 2
Notes:
1. SAD3 has the same value as either SAD1 or SAD2, whichever has the least number of lines (set by SL1 and SL2).
2. Since the parameters corresponding to SL3 and SL4 are fixed by L/F, they do not have to be set in this mode.
Table 15. Graphics display mode
W/S Screen
First Layer
Second Layer
Third Layer
Upper screen
SAD1
SAD2
SL1 SL2
SAD3 (see note 3)
Lower screen
Set both SL1 and SL2 to
L/F +1 if not using a
partitioned screen
Screen configuration example
SAD2
SAD1
0
SL2
Graphics display page 2
SL1 Character display page 1
SAD3
Character display page 3
Laver 1
Laver 2
Three-layer configuration
SAD1
SL1 = L/F + 1
Screen configuration example:
SAD1
SL2 = L/F + 1
SAD3
SAD3
SAD2
SAD1
Graphics display page 3
SL2
0 SL1
Graphics display page 2
Layer 1
Layer 3
Layer 2
15 o f 34
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