Display Device and Backlight Module with Thermal Isolating Layer

A display device, comprising:

• a display panel having a display area;
• a backlight module disposed under the display panel, the backlight module comprising:
• a light source holder, comprising:
• a sidewall;
• a top plate and a bottom plate respectively extending from an upper end and a lower end of the sidewall, the bottom plate at least partially overlapping the display area, wherein the top plate, the sidewall, and the bottom plate together form a semi-opened space, and an edge of the top plate and the bottom plate form an opening to the space;
• a light source disposed in the space;
• and
• a light guide plate corresponding to the display area and extending along the bottom plate, one end of the light guide plate being located in the opening formed by the top plate and the bottom plate and corresponding to the light source, wherein a thermal isolating layer is disposed between the light guide plate and a portion of the bottom plate overlapping the display area, a perpendicular distance between the light guide plate and a portion of the bottom plate overlapping the thermal isolating layer is greater than a perpendicular distance between the light guide plate and the other portion of the bottom plate.