gp1237ai 320x32 pixel display area 144 x 14 mm gp1212 ai 256x64 pixel display area 115 x 29 mm...

GP1237AI 320x32 pixel display area 144 x 14 mm

GP1212 AI 256x64 pixel display area 115 x 29 mm

GP1219AI 256x64 pixel display area 164 x 38 mm

• High brightness (700-1250 cd)

• Simple power supply design

• Digital dimming

New Graphic VFD with intelligent CIG controller

BP043GIN 125x85 pixel

CIG-VFD

ＤRGraphic

ＤR

SystemCPU

Graphic ControllerImage composition function

Controller

SystemCPU

　　Reduce the CPU load to drive VFD ⇒ Reduce system cost

New Graphic Chip-in-Glass Controller

Graphic

CIG-VFD

Simple Command Flow Chart

send onlyinitialize &BMP data

Controller Driving Details

Command Details 1:

Initialize Display(fixed data)

1) Software Reset

2) Clear Memory Map

3) Oscillation Setting (default)

Command Details 2:

Initialize Display(fixed data)

4) Memory Mode Setting (default)

5) Display Area Setting (default)

6) Display Area Setting (default)

Command Details 3:

Dimming

Command Format

2nd Dimming Data

Command Details 4:

Memory MapDisplay Data Write

2nd: Memory Map X Start Position

3rd: Memory Map Y Start Position

Command Format

4th: Memory Map Display Height

5th~: BMP data

Command Details 5:

Display Position

1st Digital Window Selection

2nd Digital Window X Start Position

Command Format

3rd Digital Window Y Start Position

Command Details 6:

Display Mode Settings

Command Format

2nd Display Mode Commands

VFD Power Supply Methods

Power Supply Solution 1: Royer circuit

Advantage: low component cost & high input voltage possible

Disadvantage: custom designed transformer required

Power Supply Solution 2: For small Displays

Advantage: only standard components required

Disadvantage: higher component cost & max. 5Vdc input

Power Supply Solution 2: For small Displays (low voltage)

LM9022 Voltage Multiplier for Anode/Grid voltage

Power Supply Solution 2:

For small Displays(high voltage)

LM9022

MC34063

Disadvantage:

higher component cost

& max. 5Vdc input

Advantage:

only standard

components required

Power Supply Solution 3: For large Displays

Advantage: only standard components required

Anode/Grid Voltage Filament Voltage

Disadvantage: higher component cost & max. 5Vdc input

Cut-off Bias Requirement (Ek)

Background: Electron Leakage