Electronic paper display module, method for making same and electronic paper display device

An electronic paper display device comprising an electronic paper display module, the electronic paper display module comprising:

• a substrate;
• a circuit layer disposed on one side of the substrate;
• an insulating layer disposed on the substrate and the circuit layer;
• an electronic paper display layer disposed on one side of the insulating layer opposite from the circuit layer and partially passing through the insulating layer to electrically connect with the circuit layer;
• an electrical connecting member, and
• a top protective layer disposed on the insulating layer and the electronic paper display layer;
• wherein the top protective layer, the insulating layer and the circuit layer cooperatively seal the electronic paper display layer to isolate it from outside air, and the circuit layer, the insulating layer, the electrical connecting member and the substrate cooperatively seal the circuit layer to isolate it from outside air.

A method for making an electronic paper display module, comprising the steps of:

• providing a substrate;
• forming a circuit layer on one side of the substrate;
• forming an insulating layer on the substrate and the circuit layer, with part of the circuit layer exposed outside the insulating layer;
• forming an image layer on one side of the insulating layer opposite from the circuit layer according to a preset image, with the image layer partially passing through the insulating layer to electrically connect with the circuit layer;
• forming an electrical connecting member on the circuit layer, wherein the electrical connecting member, the image layer, the insulating layer and the substrate cooperatively seal the circuit layer to isolate it from outside air;
• providing an electric paper display screen, and affixing and pressing the electronic paper display screen onto one side of the image layer opposite from the insulating layer;
• storing the resulted electronic paper display module in an environment having a temperature of 25 degrees and a relative humidity of 50%, such that the relative humidity of electronic ink in the electronic paper display screen is maintained at 50%±5%;
• and
• forming a top protective layer on the electronic paper display screen and the insulating layer, wherein the top protective layer, the insulating layer and the circuit layer cooperatively seals the electronic paper display screen to isolate it from outside air.