Rotating Lamp Panel Backlight for Lower-Cost Partition Control
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Solution Overview
Problem
Current mini LED display devices require a large number of partitions and lamp beads in the backlight structure, leading to increased manufacturing costs and power consumption.
Innovation Solution
A backlight source with a lamp panel and light-emitting elements driven to rotate at a preset rate by a transmission member, forming a surface light source, and a backlight driving circuit controlling the light-emitting elements for partitioned light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of partitions and lamp beads are used in the backlight structure, then stable contrast is achieved, but manufacturing costs and power consumption significantly increase
Solution Approach 1:
The patent applies the dynamics principle by rotating the lamp panel at high speed (e.g., 12000 rpm) to create a visual persistence effect. The lamp panel rotates continuously during display, and the human eye perceives the rotating light sources as a stable, uniform backlight due to the persistence of vision. This dynamic rotation replaces the need for numerous static lamp beads, significantly reducing the number of light-emitting elements while maintaining stable backlight output and contrast performance
Solution Approach 2:
The patent implements periodic action through the rotational movement of the lamp panel. The light-emitting elements on the lamp panel periodically pass through different angular positions during rotation, creating time-varying light distribution. By controlling the rotation speed and positioning of light-emitting elements, the system achieves periodic illumination patterns that, when integrated by the human visual system, produce stable contrast and uniform backlight appearance without requiring a large number of continuously illuminated lamp beads
2Reliability
If a large number of partitions and lamp beads are used in the backlight structure, then stable contrast is achieved, but manufacturing costs significantly increase
Solution Approach 1:
The patent applies the dynamics principle by rotating the lamp panel at high speed (e.g., 12000 rpm) to create a visual persistence effect. The lamp panel rotates continuously during display, and the human eye perceives the rotating light sources as a stable, uniform backlight due to the persistence of vision. This dynamic rotation replaces the need for numerous static lamp beads, significantly reducing the number of light-emitting elements while maintaining stable backlight output and contrast performance
Solution Approach 2:
The patent merges multiple light-emitting elements onto a single rotating lamp panel structure. Instead of using numerous individual lamp beads distributed across multiple partitions, the invention combines all light-emitting elements onto one or a few rotating panels. This consolidation reduces the total number of components, simplifies the backlight structure, and lowers manufacturing costs while achieving the same visual effect through rotational motion
3Adaptability or versatility
If fixed mini LED lamp beads are used in each partition, then partition backlight is achieved, but the number of lamp beads and device complexity increase
Solution Approach 1:
The patent applies the dynamics principle by rotating the lamp panel at high speed (e.g., 12000 rpm) to create a visual persistence effect. The lamp panel rotates continuously during display, and the human eye perceives the rotating light sources as a stable, uniform backlight due to the persistence of vision. This dynamic rotation replaces the need for numerous static lamp beads, significantly reducing the number of light-emitting elements while maintaining stable backlight output and contrast performance
Solution Approach 2:
The rotating lamp panel structure serves multiple functions simultaneously: it provides the light-emitting surface, acts as the structural support for all light-emitting elements, enables partition control through selective illumination of different angular positions, and creates the visual persistence effect for stable backlight appearance. This multi-functional design replaces the need for separate partition structures and individual lamp bead mounts, simplifying the overall device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces manufacturing costs and power consumption by using a smaller number of light-emitting elements while achieving large-area backlight with adjustable brightness and contrast.
Implementation Method 1
The transmission member is configured to rotatably drive the lamp panel to rotate at a preset rotation rate, to make the lamp panel drive the multiple light-emitting elements to rotate at the preset rotation rate, to form a surface light source
Data Source
AI summary
A backlight source, a display device, and a method for partition control are provided. The backlight source includes a lamp panel and multiple light-emitting elements disposed on the lamp panel and electrically connected to the lamp panel. The backlight source further includes a transmission member fixedly connected to the lamp panel. The transmission member is configured to rotatably drive the lamp panel to rotate at a preset rotation rate, to make the lamp panel drive the multiple light-emitting elements to rotate at the preset rotation rate, to form a surface light source.