Bent Light Bar and Back Plate Design for LCD Corner Illumination

The light bar is designed with a bent shape instead of a straight configuration. Specifically, the light bar is bent from both ends toward the middle of the frame, forming an arc shape that matches the contour of the display panel. This curvature allows the light emitting units positioned at the ends of the light bar to direct light toward the corners of the display panel, eliminating the vignetting effect while maintaining manufacturing simplicity.

The light bar is integrated with the back plate to form a unified structure. The bent light bar is fixed onto the back plate, and both components share the same arc shape. This merging of the light bar and back plate into a single contoured assembly reduces the number of separate parts and simplifies the overall device structure, thereby reducing structural complexity while maintaining the light-shifting function.

The optical normal of the light emitting units is inclined at a preset angle relative to the plane of the frame, rather than being perpendicular to it. This angular parameter change allows the light rays to be directed toward the corners of the display panel more effectively. The preset angle is determined during the design stage and can be achieved through standard manufacturing processes, balancing the need for optimized light distribution with practical manufacturing capabilities.