LED Display Sub-Pixel Sharing for Resolution and Power
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Solution Overview
Problem
The challenge in LED display technology is accurately imprinting a large quantity of LEDs into pixel structures and managing high brightness and power consumption, particularly when using driving methods adapted from liquid crystal displays.
Innovation Solution
The LED display apparatus reduces the number of LEDs by sharing sub-pixel units across different enabling periods corresponding to various gate lines, allowing for a smaller number of LEDs without compromising resolution, and incorporates larger light emitting areas to accommodate border regions, thereby reducing manufacturing costs and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large quantity of LEDs are imprinted into pixel structures to maintain resolution, then the resolution is maintained, but the manufacturing difficulty and cost increase significantly
Solution Approach 1:
The patent merges the function of multiple LEDs into a single shared sub-pixel unit. Specifically, one sub-pixel unit is shared by multiple pixel structures across different enabling periods, allowing the display to maintain resolution while reducing the total number of LEDs that need to be imprinted. This combining approach directly addresses the manufacturing difficulty while preserving display quality.
Solution Approach 2:
The shared sub-pixel unit performs multiple functions by serving different pixel structures during different enabling periods. A single sub-pixel unit is controlled by multiple gate lines and can be activated in different time slots to fulfill the display requirements of multiple pixel locations, thereby reducing the overall LED count needed while maintaining resolution.
2Illumination intensity
If driving current is continuously provided to pixels during enabling period to maintain brightness, then the brightness is sufficient, but the power consumption becomes excessively high
Solution Approach 1:
The patent implements periodic action by activating LEDs in discrete enabling periods corresponding to different gate lines rather than continuous operation. Each sub-pixel unit is turned on only during its designated enabling period and remains off during other periods. This periodic activation pattern maintains sufficient display brightness while dramatically reducing average power consumption compared to continuous driving.
Solution Approach 2:
The display system dynamically controls the activation state of different sub-pixel units based on the current enabling period. The circuit transitions between different operational states (on/off) for different sub-pixel units at different times, optimizing power consumption while maintaining brightness requirements. This dynamic control allows the system to adapt power usage to actual display needs.
3Quantity of substance
If the number of LEDs is reduced by sharing sub-pixel units, then the manufacturing cost and power consumption decrease, but the complexity of controlling multiple gate lines increases
Solution Approach 1:
The patent segments the control of sub-pixel units by associating each unit with specific gate lines and enabling periods. Instead of a monolithic control system, the control is divided into discrete segments corresponding to different gate lines and time periods. Each sub-pixel unit is controlled by a specific combination of gate lines, creating a segmented control architecture that manages complexity through systematic organization.
Solution Approach 2:
The patent uses preliminary action by pre-assigning specific gate lines and enabling periods to each sub-pixel unit before operation begins. The control scheme is established in advance, with each sub-pixel unit having predetermined activation conditions based on gate line combinations. This preliminary assignment simplifies real-time control by eliminating the need for complex dynamic decision-making during operation.
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
This approach allows for a reduction in the number of LEDs and manufacturing costs while maintaining resolution and achieving a narrow or borderless LED display with reduced power consumption and high brightness.
Implementation Method 1
Light emitting diode (LED) has advantages of high energy conversion efficiency, short reaction time, long lifetime, etc.
Data Source
AI summary
A light emitting diode (LED) display apparatus includes first to third data lines, gate lines, a first color sub-pixel unit and second color sub-pixel units. The gate lines include (N−1)th, Nth and (N+1)th gate lines. The first color sub-pixel unit includes a first color LED electrically coupled to the first data line and the (N−1)th and Nth gate lines. When the (N−1)th or Nth gate line is enabled, the first color LED is turned on. The second color sub-pixel unit is electrically connected to the second data line, and includes a second color LED. The second color sub-pixel units are electrically coupled to the gate lines, respectively. When each gate line is enabled, the corresponding second color LED is turned on. A light emitting area of the first color sub-pixel unit is greater than a light emitting area of each second color sub-pixel unit.