Display Light Apparatus With Shared Power Wires Across Dimming Rows
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Solution Overview
Problem
The increasing number of driving devices and light sources in display apparatuses leads to an increase in the number of wires required, complicating the substrate design and potentially affecting the efficiency and reliability of the display.
Innovation Solution
A display apparatus design that includes a substrate with dimming blocks arranged in a matrix, where power wires are shared between adjacent rows of dimming blocks, and driving devices control the current to these blocks, minimizing the number of wires needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of driving devices and light sources is increased to implement display apparatuses having high contrast ratios, then the contrast ratio is improved, but the number of wires needed by a substrate increases
Solution Approach 1:
The patent merges the power supply function into the data transmission wires by superimposing power signals on top of data signals. This allows the same physical wire to carry both data and power, thereby reducing the total number of wires needed while maintaining the ability to control multiple light sources and driving devices for high contrast ratio display.
Solution Approach 2:
The data transmission wires are designed to perform multiple functions: transmitting both data signals and power signals. This multi-functionality allows the substrate to maintain comprehensive control over all light sources and driving devices without requiring separate dedicated power wires for each component.
2Reliability
If the number of driving devices and light sources is increased to implement display apparatuses having high contrast ratios, then the contrast ratio is improved, but the substrate design becomes more complicated
Solution Approach 1:
The patent combines multiple signal types (data and power) into a single transmission medium. This merging approach simplifies substrate design by reducing the number of separate wire routes that need to be planned and laid out, while still supporting the increased number of driving devices and light sources required for high contrast ratio performance.
Solution Approach 2:
By designing wires that can universally handle both data and power transmission, the substrate design process is simplified. The same physical infrastructure serves multiple purposes, reducing design complexity compared to having separate dedicated pathways for each signal type.
3Ease of manufacture
If separate power wires are provided for each row of dimming blocks, then power distribution is simplified, but the number of wires increases
Solution Approach 1:
The patent merges power distribution with data transmission by superimposing power signals on existing data wires. This eliminates the need for separate power wires for each row of dimming blocks, reducing the total wire count while maintaining organized and manageable power distribution through the existing wire infrastructure.
Solution Approach 2:
The data transmission wires are designed to universally handle both data and power distribution functions. This multi-functionality allows the system to maintain simplified power distribution across all dimming block rows without requiring additional dedicated power wires, thereby reducing overall device complexity.
Data Source
AI summary
In some embodiments, a display apparatus includes a liquid crystal panel, and a light apparatus including a substrate including a plurality of dimming blocks that are arranged in a matrix, a power wire configured to supply power to the plurality of dimming blocks, and a plurality of driving devices configured to control a driving current supplied to the plurality of dimming blocks. Each dimming block of the plurality of dimming blocks includes a plurality of light sources. A second dimming block of the plurality of dimming blocks is arranged in an (n+1)th row adjacent to the nth row. The power wire is arranged between the nth row corresponding to the first dimming block and the (n+1)th row. The power wire is coupled to a first light source of the first dimming block and to a second light source of the second dimming block.