Backlight module and display device

• Main Authors: JIANG XINGJIA, YUAN HAIJIANG
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2023
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention provides a backlight module which comprises a middle frame, the middle frame comprises a first middle frame and a second middle frame, a plurality of hollowed-out parts are formed in the side, back to the second middle frame, of the first middle frame, expansion assemblies are arranged in the hollowed-out parts, the backlight module further comprises an elastic film, and the elastic film is arranged on the side, back to the second middle frame, of the first middle frame. And the plurality of hollow parts are covered. When the backlight module emits light, heat generated by the light-emitting assembly of the backlight module is transmitted to the multiple expansion assemblies, the multiple expansion assemblies are heated to expand, and part of each expansion assembly extends out of the hollow part and abuts against the elastic film, so that a plurality of protrusions are formed on the elastic film to support the display panel. The display panel and the backlight module form point contact through