Housing Assembly, Housing Assembly Preparation Method, and Electronic Device

A method comprising:

• soaking a glass fiber cloth in an epoxy resin adhesive solution to obtain a soaked cloth;
• performing hot-pressing on the soaked cloth to form a substrate comprising a first surface and a second surface that are disposed opposite to each other;
• forming a first decoration layer on a first membrane surface of a membrane so that a decoration layer surface of the first decoration layer is disposed away from the substrate;
• bonding the membrane to the first surface using a transparent adhesive layer so that a second membrane surface of the membrane is disposed opposite to the first surface;
• forming a light shielding layer on the decoration layer surface;
• and
• forming a second decoration layer on the second surface.

An electronic device, comprising:

• a middle frame comprising a first side and a second side disposed opposite to each other;
• a display coupled to the first side;
• and
• a battery cover coupled to the second side, wherein the battery cover comprises a housing assembly, and wherein the housing assembly comprises:
• a substrate comprising:
• a first surface configured to dispose proximate to the electronic device;
• and
• a second surface opposite the first surface;
• a membrane bonded to the first surface using a transparent adhesive layer;
• a first decoration layer disposed on the membrane, wherein the first decoration layer comprises a decoration layer surface disposed away from the substrate;
• a light shielding layer disposed on the decoration layer surface;
• and
• a second decoration layer disposed on the second surface.