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BOE BTQ018A,
BOE brand samll pitch indoor LED video display screen.
| Item | BTQ018A | |
| Module | Pitch(mm) | 1.83 |
| LED type | SMD1515 | |
| Module resolution | 174*86 | |
| Module size(mm*mm) | 320*160 | |
| Cabinet | Cabinet size(mm*mm) | 640*480 |
| Cabinet resolution | 348*258 | |
| Physical density (dot /m2) | 295,690 | |
| Cabinet thickness(mm) | 66 | |
| Service way | front service | |
| Cabinet material | Die-casting aluminum | |
| Cabinet flatness(mm) | <0.1 | |
| Life span(H) | 100,000 | |
BOE LED display screen features :
Humanized brightness adjustment
high contrast
Lower maintenance costs
Ultra high refresh rate
Broadcast level gray processing
wide view angle
Single pixel brightness and chroma correction technology
High color gamut coverage
Nanosecond response time
Driving mode
LED display is divided into constant current drive and constant voltage drive.
Constant current drive, as the name suggests, is that the output current of constant current drive is constant, while the output DC voltage will vary with the size of load resistance
it changes within a certain range, the smaller the responsible resistance, the lower the output voltage. The larger the responsible resistance, the higher the output voltage;
At present, representative driver devices include: icn2053, icn2038, icn2025, sm16206, etc;
Constant voltage drive, its output voltage is fixed, but its output current will change with the increase or decrease of load;
The representative driver is 74hc595d.
Generally speaking, constant current drive products will be better and more expensive. Because of constant current driven products, it has more circuits and chips,
The current can be kept constant, which increases the service life and stability of LED display.








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