Slimmer Backlight Unit Case With Hive Structure And Stepped Portion
Solution Overview
Problem
Conventional liquid crystal display (LCD) devices have a thickened thickness due to the use of screws for fixing components, and lack a separate mechanism to secure the light guide panel, leading to positional instability.
Innovation Solution
A backlight unit with a case having a hive structure, optical sheets with different axes, and a coupling member that integrates the components, including a cabinet with a stepped portion to accommodate the coupling member, which fixes the light guide panel and prevents movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used for fixing components, then the structural strength is improved, but the thickness of the device is increased
Solution Approach 1:
The patent integrates the light guide panel fixing function into the existing case structure by forming a positioning protrusion directly on the case. This merging of functions eliminates the need for separate screw fixing mechanisms, achieving both structural strength and reduced thickness simultaneously.
Solution Approach 2:
The patent extracts the fixing function from the screw mechanism and relocates it to the case structure itself through the positioning protrusion. This separation allows the removal of unnecessary screws while maintaining the fixing capability, thereby reducing device thickness.
2Device complexity
If no separate fixing mechanism is provided for the light guide panel, then the device complexity is reduced, but the positional stability of the light guide panel deteriorates
Solution Approach 1:
The case structure provides self-service by incorporating the positioning protrusion directly into its design. This allows the case to perform the dual function of structural support and light guide panel positioning, eliminating the need for separate fixing mechanisms while maintaining positional stability.
Solution Approach 2:
The case is designed with multi-functionality, serving both as the structural housing and as the positioning mechanism for the light guide panel. The positioning protrusion integrated into the case demonstrates this universal approach, achieving stability without additional components.
Data Source
AI summary
Disclosed is a backlight unit and a display device including the same. The backlight unit includes a backlight configured to supply light in one direction, a case that accommodates the backlight, and a cabinet coupled to a top of the case, and configured to include a side wall which faces one direction. The inside of the case has a hive structure. At least one edge region of the case includes a stepped portion which is lower in height than a central region of the case to accommodate the cabinet.