E Ink display
From MobileRead
Contents |
[edit] E Ink Display Specifications
Updated for Vizplex display.
[edit] Optical
| White State Reflectivity: | 40% (typical) |
| Contrast Ratio: | 7:1 (typical) |
| Viewing Angle: | 170 degree |
| Grayscale Capability: | 3-bit (8 gray levels) |
| Image Update Time: | 750 ms (grayscale mode) 260 ms (1-bit mode) |
In actual practice the grayscale capability is up to the controller hardware and can range from 4 levels to 16 levels in currently shipped devices.
[edit] Mechanical / Dimensional for 6" Display
| Pixel Count: | 800 x 600 (SVGA) |
| Pixel Size: | rectangular, 151 x 153 micron |
| Active Area: | 90.6 x 122.4 mm (3.6 x 4.8") 152.3 mm (6 inches) diagonal |
| Display Thickness: | 1.25 mm |
| Display Weight: | 35 g |
There are other display sizes available.
- 9.7" (5.6" x 8.1") 1200 x 825 pixels
- 8.0" 1024 x 768
- 5.0" 800 x 600
For more details see: http://www.eink.com/products/matrix/High_Res.html
For display controller specs see: http://www.eink.com/products/matrix/metronome.html
[edit] Environmental
| Operating Temperature Range: | 0 — 50 C |
| Storage Temperature Range: | -27 — 70 C |
[edit] Electrical
| Supply Voltage: | 2.7—3.3 V DC |
| Power Consumption: | Active update peak: 1800 mW Active update typical: 750 mW Standby typical: 1 mW |
[edit] Notes on earlier E-Ink devices.
The older display technology has 4 level gray scale and slower update times of 1000 ms for gray scale and 500 ms for 1-bit mode. These were primarily 6" devices. They also had less reflectivity. This causes these devices to appear less white (light grey background) and have less contrast.
The iRex iLiad, on the other hand, uses a custom display controller that achieves 16 levels of gray scale. They are also using an 8.1" display featuring a 1024 x 768 pixel display.
