Display device, and television device

What is this patent about?

’793 is related to the field of display and television devices, specifically the structural design of the rear housing and internal chassis. In modern flat-panel displays, managing heat dissipation from internal electronics while preventing light leakage from the backlight unit is a persistent challenge, especially as devices become thinner and utilize fewer discrete housing components.

The underlying idea behind ’793 is to utilize the internal metal chassis—which typically only serves to hold the backlight and display components—as a primary external heat sink and structural rear housing. By designing the chassis with seamless, bonded corners and a specific geometry that leaves the outer perimeter exposed, the invention eliminates the need for a full-sized rear plastic cabinet while simultaneously solving the problem of light escaping through gaps in the chassis corners.

The claims of ’793 focus on a display assembly where a substrate mounting member (the chassis) covers the backlight and features side walls that are bonded to one another at the corners without any clearance. A smaller cover member is attached to the center of this chassis to protect the circuit boards, leaving the outer peripheral region of the metal chassis exposed to the ambient air to function as a heat radiation portion.

In practice, the metal chassis is manufactured using drawing press working to create a continuous, rounded corner profile that acts as a light-tight seal. The central portion of this chassis is recessed to house the electronics, allowing the protective resin cover to sit flush or nearly flush with the rest of the assembly. This configuration creates a dual-purpose rear surface where the central resin cover protects sensitive components while the exposed metal perimeter provides a direct thermal path to the outside environment.

This approach differentiates itself from prior designs that relied on a full rear cabinet to hide the internal chassis. By ensuring the chassis corners are bonded without a clearance, the invention allows the chassis to be visible and functional as an exterior part without the aesthetic or functional failure of light leakage. Furthermore, the use of a convex swelling in the exposed metal region provides the necessary mechanical rigidity to allow the chassis to serve as a structural outer shell.