Precautions for E-paper Display
1. Storage condition of Monochrome electronic paper display
1.1 Transportation conditions
Temperature range: -25~70℃
Shipping time: Based on the actual arrival time.
1.2 Storage condition
Temperature range:Below 30 ° C
Humidity range: Below 55% RH
Maximum storage time: 6 months
1.3 After opening the package
Temperature range: 20℃±5℃
Humidity range: 50±5%RH
Maximum storage time: assembly completed within 72 hours after unpacking (except samples)
1.4 Normal use conditions of the product
Temperature range: 0~50℃
Humidity range: 35%~65%RH
2. Storage condition of Three-color electronic paper display
2.1 Transportation conditions
Temperature range: -25~60℃
Shipping time: Based on the actual arrival time.
2.2 Storage condition
Temperature range:Below 30 ° C
Humidity range: Below 55% RH
Maximum storage time: 3 months
2.3 After opening the package
Temperature range: 20℃±5℃
Humidity range: 50±5%RH
Maximum storage time: assembly completed within 72 hours after unpacking (except samples)
2.5 Normal use conditions of the product
Temperature range: 0~40℃
Humidity range: 35%~65%RH
Note: When the three-color product is stored, the display screen should be kept white and face up. In addition, please be sure to refresh the e-paper every three months.
3. Refresh requirement
3.1 Refresh mode
3.1.1 Full refresh: the e-paper display refresh needs to be displayed multiple times before the desired picture is displayed. The purpose of flashing is to clear the residual image for optimal display.
3.1.2 Partial refresh: no flashing of the screen during electronic paper refresh. However, the partial refresh requires the customer to perform a full refresh after refreshing several times, and then continue the partial refresh, so that the residual image can be cleared.
3.2 Refresh frequency requirement
3.1.1 Refresh frequency of e-paper display
It is recommended that the refresh interval be at least 180 seconds (except for products that support partial refresh).
3.1.2 Three-color e-paper display refresh times
When the three-color e-paper display is refreshed, it is recommended to update the display at least every 24 hours.
3.3 Standby requirement
When the e-paper display is in use, if the display is not refreshed frequently, it is recommended to set the e-paper display to sleep mode or disconnect the drive power supply through the analog switch. It can reduce power consumption and extend the life of the display.
3.4 Flexible e-paper display operation requirements
The IC of e-paper display cannot be bent, and the visible arc curvature of the display is greater than 60 degrees.
3.5 Environmental requirements
It is recommended to use indoors. If it is used outdoors, it is necessary to keep the electronic paper out of direct sunlight and to take ultraviolet protection measures. When designing a product, users must first consider whether the environment meets the temperature and humidity requirements of e-paper display.
4. Drive circuit component selection
4.1 MOS tube selection
We recommend customers to choose Si1304BDL or Si1308EDL. If not, you can also select similar MOS tubes according to the technical parameters of these two models.
4.2 Inductor selection
The inductor uses a 10uH 1A winding inductance.
4.3 Capacitor selection
The capacitance value needs to be consistent with the electronic paper specification parameters.
5. Software porting
5.1 IO port configuration
Input: BUSY
Output: CS, RES, D/C, SCLK, SDIN.
5.2 Program migration
When the user migrates the software, the corresponding IO port in the driver needs to be reconfigured, and the BUSY pin is opposite to the other pins. The communication method of SPI is analog SPI.
6. Drive circuit exception handling
6.1 MOS tube becomes hot
May be it caused by the reverse welding of the diodes in the line.
6.2 The drive circuit cannot be boosted
Please check whether the parameters of the driver circuit components are correct. If it is correct, please check the IO configuration of the software migration part.
6.3 Drive circuit boost becomes too low
Please check if the parameters of MOS tube and inductor are correct.
