Display Apparatus Power Line Merging for Pin Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing complexity and cost of display apparatuses due to the growing number of wires and pins required for power input and output, which complicates the layout and increases manufacturing costs.
Innovation Solution
A display apparatus that reduces the number of wires and pins for power input and output by sharing driving voltages used in the data driver, utilizing a power supplier to generate common reference voltages that are controlled by a timing controller to supply to the data driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of power sources and wires is increased to meet advanced display specifications, then the power supply capability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Multiple separate power supply lines (ELVDD1, ELVDD2, ELVDD3) are merged into a single common power line (ELVDD). The power supplier generates multiple driving voltages, and through the timing controller's management, these are combined into one shared power connection that supplies all data drive ICs, reducing the number of wires and pins while maintaining adequate power delivery capability
Solution Approach 2:
The common power line ELVDD serves multiple functions simultaneously - it provides power to all data drive ICs connected to the display panel, replacing what would otherwise require multiple dedicated power lines. This universal power distribution approach reduces complexity while maintaining the ability to support advanced display specifications
2Power
If the number of power sources and pins is increased to meet advanced display specifications, then the power supply capability is improved, but the manufacturing cost increases
Solution Approach 1:
Multiple separate power supply connections are merged into a single common power line ELVDD. By combining multiple power delivery paths into one shared connection, the number of pins, connectors, and wiring components is reduced, directly lowering manufacturing costs while the power supplier ensures adequate power is delivered to all data drive ICs
3Power
If multiple separate power lines are used for each data drive IC, then the power distribution is improved, but the number of wires and pins increases
Solution Approach 1:
Multiple individual power lines (ELVDD1, ELVDD2, ELVDD3) that would each connect to separate data drive ICs are merged into a single common power line ELVDD. This consolidation reduces the quantity of wires and pins from multiple separate connections to one shared connection, while the power supplier maintains the ability to distribute appropriate power levels to each IC through this unified pathway
Data Source
AI summary
Disclosed is a display apparatus comprising a display panel with a plurality of data lines, a plurality of reference lines, and a plurality of subpixels arranged therein, a data driver configured to supply a data voltage to the data lines and to supply a reference voltage to the reference lines, a power supplier configured to supply a plurality of driving voltages to the data driver, and a timing controller configured to control the data driver and the power supplier and to supply a common voltage that changes between a plurality of different voltage levels that correspond to the plurality of driving voltages.