Abstract: A detachable pushbutton structure includes a case seat which is formed with an internal receiving space for receiving a base seat and a linking member. The base seat has multiple contact legs. The linking member is drivable to control the respective contact legs to form different conducting states. A support seat connected with the linking member and has an internal penetrating hole. A light-emitting member is received in the penetrating hole and connected with the base seat. A connected section is disposed on an outer side of the support seat. A cap assembly can be tightly capped on the penetrating hole of the support seat. A pushbutton is capped on the cap assembly and has a connection section detachably connected with the connected section. A protective ring securely connected between an inner circumference of the receiving space and an outer circumference of the support seat.

Abstract: A back plate unit includes a back plate having opposite first and second sides, an optical member mounted to the back plate, and a buffer assembly disposed between the optical member and the back plate and including at least one first buffer member disposed on the first side and made of a thermoplastic material, and at least one second buffer member disposed on the second side and made of a thermoset material. The at least one first buffer member and the optical member are deformed when heated, and the at least one first buffer member is squeezed and compressed by expansion of the optical member. A backlight module of a display device is also disclosed.

Abstract: A back plate unit includes a back plate having opposite first and second sides, an optical member mounted to the back plate, and a buffer assembly disposed between the optical member and the back plate and including at least one first buffer member disposed on the first side and made of a thermoplastic material, and at least one second buffer member disposed on the second side and made of a thermoset material. The at least one first buffer member and the optical member are deformed when heated, and the at least one first buffer member is squeezed and compressed by expansion of the optical member. A backlight module of a display device is also disclosed.