Metal Back Plate Heat Dissipation for High Luminance Displays

The patent extracts the heat dissipation function from the traditional plastic back plate structure and assigns it to a dedicated metal back plate with integrated heat dissipation fins. This separation allows the light bar to focus on light generation while the metal back plate handles heat removal, resolving the contradiction between high luminance and heat management.

The patent uses a metal back plate that replicates and enhances the heat dissipation capabilities needed to support increased light source density. The metal back plate with fins creates additional heat dissipation surfaces, effectively copying and amplifying the heat removal function to accommodate higher luminance requirements.

The patent converts the harmful heat generated by high-luminance light sources into a manageable thermal flow by designing the metal back plate with integrated fins that actively channel and dissipate the heat. The heat that would otherwise deform components is redirected through the fin structure to the ambient air, transforming a harmful byproduct into a controlled thermal management system.

The patent employs a composite structure combining metal back plate material with heat dissipation fin geometry. The metal material provides high thermal conductivity to rapidly transport heat away from sensitive components, while the fin structure increases surface area for efficient convective heat transfer, together forming a composite thermal management solution that protects components while enabling high brightness.

The patent addresses heat accumulation by transitioning from a two-dimensional flat back plate to a three-dimensional structure with protruding fins. This dimensional change creates additional heat dissipation surfaces that extend into the thermal field, increasing the volume and surface area available for heat transfer to the ambient air, thereby effectively reducing heat accumulation.

The patent changes the thermal parameters of the back plate system by using metal material with high thermal conductivity and creating a finned geometry that increases surface area-to-volume ratio. These parameter changes enhance the heat dissipation rate, allowing the system to handle the increased heat load from higher luminance light sources without harmful heat accumulation.