CROSS-REFERENCE TO RELATED APPLICATION

This is a National Phase Application filed under 35 U.S.C. 371 as a national stage of PCT/CN2019/073682, filed Jan. 29, 2019, an application claiming the benefit of Chinese Patent Application No. 201810643584.2, filed on Jun. 21, 2018, entitled “HEAT DISSIPATION FILM, DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF” to the China National Intellectual Property Administration (CNIPA), the entire contents of each of which are hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and in particular, to a heat dissipation film, a display device, and a manufacturing method of the display device.

BACKGROUND

At present, edges of the cover plate of the display device using the decorative film may leave blank due to the limitation of the attaching process, which may cause light leakage of the display device and affect display.

Therefore, the related art of the existing display devices still need to be improved.

SUMMARY

In one aspect of present disclosure, the present disclosure provides a heat dissipation film for a display device, including: a heat conducting layer and a light shielding layer; wherein, an orthographic projection of the light shielding layer in a thickness direction covers an orthographic projection of the heat conducting layer in the thickness direction, and an area of the orthographic projection of the light shielding layer in the thickness direction is larger than an area of the orthographic projection of the heat conducting layer in the thickness direction.

According to an embodiment of the present disclosure, the heat conducting layer includes a metal layer and a first heat conducting layer, the metal layer being disposed on a surface of the first heat conducting layer away from the light shielding layer.

According to an embodiment of the present disclosure, the heat dissipation film further includes a release layer disposed on at least a portion of an exposed surface of the heat dissipation film.

According to an embodiment of the present disclosure, the release layer includes: a first release layer disposed on a surface of the light shielding layer away from the first heat conducting layer, and a second release layer disposed on a surface of the light shielding layer adjacent to but not covered by the first heat conducting layer.

According to an embodiment of the present disclosure, the release layer further includes a third release layer disposed on a surface of the metal layer away from the first heat conducting layer.

According to an embodiment of the present disclosure, the heat dissipation film further includes an adhesive layer disposed between the metal layer and the third release layer.

According to an embodiment of the present disclosure, the heat conducting layer further includes a second heat conducting layer disposed between the first heat conducting layer and the metal layer.

According to an embodiment of the present disclosure, the light shielding layer is a black tape layer.

According to an embodiment of the present disclosure, an outer circumferential edge of the orthographic projection of the light shielding layer in the thickness direction is located outside an outer circumferential edge of the orthographic projection of the heat conducting layer in the thickness direction.

According to an embodiment of the present disclosure, a distance that each of two ends of the light shielding layer in a length direction exceeding each of two ends of the heat conducting layer in a length direction is in range of 0.5 to 2 mm.

According to an embodiment of the present disclosure, a distance that each of two ends of the light shielding layer in a width direction exceeding each of two ends of the heat conducting layer in a width direction is in range of 0.5 to 2 mm.

According to an embodiment of the present disclosure, the two ends of the light shielding layer opposite to each other in the length direction are aligned with the two ends of the heat conducting layer opposite to each other in the length direction, respectively, and the two ends of the light shielding layer in the width direction exceed the two ends of the heat conducting layer in the width direction, respectively.

In another aspect of the present disclosure, the present disclosure provides a display device including: a cover plate, a display panel disposed on an inner surface of the cover plate; and the heat dissipation film as described above, wherein the heat dissipation film is disposed on a surface of the display panel away from the cover plate, and an edge of a surface of the light shielding layer adjacent to the display panel is connected to an edge of the cover plate.

According to an embodiment of the present disclosure, the display device further includes a middle frame disposed around the display panel, wherein an edge of a surface of the light shielding layer away from the display panel is connected to the middle frame.

In another aspect of the present disclosure, the present disclosure provides a manufacturing method of the above display device. According to an embodiment of the present disclosure, the manufacturing method includes: fixing the heat dissipation film as described above on the surface of the display panel away from the cover plate, and disposing the heat conducting layer in the heat dissipation film away from the display panel; and bending the light shielding layer in the heat dissipation film in a direction toward the cover plate, so as to connect the edge of the surface of the light shielding layer adjacent to the display panel to the edge of the cover plate.

According to an embodiment of the present disclosure, the display device includes the middle frame disposed around the display panel, the manufacturing method further includes: connecting the edge of the surface of the light shielding layer away from the display panel to the middle frame.

