DISPLAY DEVICE

A display device includes a top frame, a display, a printed circuit board, and a bottom frame. The top frame includes an anti-EMI cover panel and a securing portion extending from the anti-EMI cover panel. A receiving space is surrounded by the securing portion. The display is mounted in the top frame. The bottom frame includes a bottom panel and a mounting flange extending from the bottom panel. The printed circuit board is mounted on the bottom panel. The mounting flange is received in the receiving spaced and abuts an inner side of the securing portion. The anti-EMI cover panel, the securing portion, and the bottom frame cooperatively define an enclosed space for anti-EMI.

DETAILED DESCRIPTION

FIGS. 1 and 2show an embodiment of a display device. The display device includes an enclosure10, a plurality of printed circuit boards30, and a display50.

The enclosure10includes a bottom frame11and a top frame13. In one embodiment, the bottom frame11is made of metal, and the top frame13is made of plastic. The bottom frame11includes a bottom panel111and a mounting flange113extending substantially perpendicularly from sides of the bottom panel111. The top frame13includes an anti-EMI cover panel131, a mounting portion133extending from sides of the anti-EMI cover panel131, and a securing portion135extending from the anti-EMI cover panel131. The securing portion135is substantially perpendicular to the anti-EMI cover panel131. The anti-EMI cover panel131is substantially parallel to the bottom panel111. A receiving space137is cooperatively defined by sides of the securing portion135for receiving the bottom frame11. The securing portion135corresponds to the mounting flange113. An anti-EMI layer136is received in an inner space of the securing portion135.

The mounting portion133includes a first resisting portion1331and a second resisting portion1333substantially parallel to the first resisting portion1331. The first resisting portion1331is substantially parallel to the anti-EMI cover panel131.

FIG. 5shows that the printed circuit boards30are substantially parallel to the bottom panel111. Each printed circuit board30includes a metal bottom layer31and a ground layer33substantially parallel to the metal bottom layer31. The metal bottom layer31is connected to the ground layer33through a via39. The metal bottom layer31contacts and is substantially parallel to the bottom panel111. In one embodiment, the metal bottom layer31is a copper foil.

Each printed circuit board30defines a plurality of securing holes35. A plurality of fasteners37is received through the securing holes35correspondingly to secure the printed circuit board30to the bottom panel111.

The display50is received to the mounting portion133to be mounted in the top frame13. The display50is substantially parallel to the anti-EMI cover panel131.

FIGS. 3 and 4show that in assembly, the mounting flange113is received in the receiving space137and abuts an inner side of the securing portion135.

The anti-EMI cover panel131, the anti-EMI layer136, and the bottom frame11cooperatively define an enclosed space for anti-EMI. The printed circuit board30includes a metal bottom layer31contacting the bottom panel111. The metal bottom layer31is connected to the ground layer33through the via39, thereby forming a faraday cage for anti-EMI.