Backlight module and LCD device

摘要

A liquid crystal display (LCD) device and a backlight module. The backlight module includes a lightbar, a lightbar heat sink, and a light guide panel (LGP). A light coupling distance is set between the lightbar and the LGP. The backlight module further includes a control structure controlling the light coupling distance. The lightbar is configured with a through hole, the control structure penetrating through the through hole is arranged on the lightbar heat sink, and the lightbar heat sink provides a fixing force that controls a position the LGP.

主权项

1. A backlight module, comprising:
a lightbar; a lightbar heat sink; a light guide panel (LGP), wherein a light coupling distance is set between the lightbar and the LGP; and two control structures controlling the light coupling distance; wherein the lightbar is configured with a through hole, the control structures pass through the through hole and are arranged on the lightbar heat sink, and wherein the lightbar heat sinks provides a fixing force that controls a position of the LGP; wherein the control structures comprise a body and a root, a cross section of the root is greater than a cross section of the body, and the root is clamped between the lightbar and the lightbar heat sink; thermal tape is arranged between the lightbar and the lightbar heat sink, a height of the root of the control structure is greater than a thickness of the thermal tape; a groove is disposed on the lightbar heat sink to receive the root of the control structure; the two control structures are distributed at two ends of the lightbar, and the control structures are rigid plastic structures.