Matrix Light Source Control for Display Perimeter
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Solution Overview
Problem
Existing light-emitting devices for display screens face challenges in individually controlling a large number of light sources due to the requirement for numerous control lines, which is impractical given the limited width of the strip on the back of the display screen.
Innovation Solution
The light-emitting device arranges light sources in a matrix configuration with multiple rows and columns, using a reduced number of control lines to manage each row and column, allowing for individual control of each light source through a control unit that acquires video signals and determines color and brightness information to synchronize light emission with the display screen's pixel areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each light source is individually controlled through separate control lines, then individual control precision is improved, but the number of control lines increases significantly
Solution Approach 1:
The patent transforms the one-dimensional linear control line arrangement into a two-dimensional matrix structure. Light sources are arranged in rows and columns, with control lines extending along row and column directions. This dimensional transformation allows a single control line to address multiple light sources at different positions, reducing the total number of control lines from linear to logarithmic scale while maintaining individual control capability through coordinate-based addressing.
Solution Approach 2:
Each control line in the matrix structure serves multiple functions: row control lines control all light sources in a particular row, while column control lines control all light sources in a particular column. This multi-functionality allows the same control line to be reused across different positions, eliminating the need for dedicated control lines for each light source and significantly reducing the overall control line count.
2Area of stationary object
If the number of light sources is increased to cover the display screen perimeter, then the light-emitting coverage is improved, but the strip width required to accommodate control lines increases
Solution Approach 1:
The patent transitions from a one-dimensional strip layout to a two-dimensional matrix arrangement of light sources. By organizing light sources in rows and columns with control lines extending in both directions, the system can cover a larger perimeter area without proportionally increasing the strip width, as the matrix structure efficiently packs more light sources into the same physical space.
Solution Approach 2:
The control system is segmented into row control units and column control units that operate independently. This segmentation allows the control function to be distributed across multiple smaller control lines rather than requiring a single wide strip to accommodate all control lines, enabling the system to scale to larger display perimeters while maintaining a compact strip width.
Data Source
AI summary
Provided is a light-emitting device for a display, and a method that includes light sources distributed on one or more strips, several light sources are arranged on each strip, and are electrically connected in a matrix manner, the number of rows and columns of the matrix are greater than 1, and each row and column of the matrix have a control line to receive a control signal; and a control unit that acquires a video signal to be provided to the display screen, from a signal source of the display screen, determines color and brightness of each light source according to the video signal, wherein each light source corresponds to a partial pixel area in the outermost periphery of a display area, and for each matrix, sequentially control each row or column of light sources in the matrix to emit light based on color and brightness within one light-emitting period.