Pixel Structure Driving Chip for Mini-LED Resolution
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Solution Overview
Problem
Current Mini-LED and Micro-LED display technologies face challenges in achieving high brightness and resolution while managing power consumption and refresh rate due to passive driving methods, which are not efficient for modern consumer terminals.
Innovation Solution
A pixel structure incorporating a driving chip with a receiving circuit, address storage circuit, data processing circuit, current output circuit, and gating circuit that decodes digital clock signals to generate pulse width modulation and current control signals, enabling active driving of light emitting devices with precise control over luminance and emission time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive driving method is used for Mini-LED and Micro-LED display, then device complexity is reduced, but display resolution and brightness are limited
Solution Approach 1:
The pixel structure is divided into multiple independent sub-pixels (red, green, blue) with separate light emitting devices and driving circuits. Each sub-pixel has its own first electrode connected to voltage lines and second electrode connected to the driving chip, enabling independent control and achieving high resolution display while maintaining manageable circuit complexity through modular design
Solution Approach 2:
The driving chip is integrated directly within the pixel structure, with the light emitting device nested between the driving chip and the voltage lines. The driving chip contains multiple circuits (receiving, address storage, data processing, current output, gating) that are nested within a single compact component, reducing overall device complexity while enabling active driving for high resolution
2Use of energy by stationary object
If passive driving method is used for Mini-LED and Micro-LED display, then power consumption is reduced, but refresh rate and response time deteriorate
Solution Approach 1:
The driving chip implements dynamic control through active driving methodology, where the gating circuit dynamically opens and closes based on pulse width modulation signals, and the current output circuit dynamically adjusts current magnitude. This dynamic operation enables fast response time and high refresh rates while the circuits only consume power during active switching periods, maintaining efficient power consumption
Solution Approach 2:
The driving chip operates in periodic phases including address writing phase, initialization phase, and display phase, with each phase performing specific functions. The receiving circuit periodically decodes digital clock signals, the gating circuit periodically switches based on PWM signals, and the current output circuit periodically provides driving current, enabling high refresh rates through efficient periodic operation rather than continuous operation
3Manufacturing precision
If active driving method with driving chip is implemented, then display resolution and brightness are improved, but device complexity increases
Solution Approach 1:
Multiple functional circuits (receiving circuit, address storage circuit, data processing circuit, current output circuit, and gating circuit) are merged into a single integrated driving chip. This consolidation reduces device complexity by eliminating the need for separate external components while enabling active driving functionality for high resolution and brightness control in the pixel structure
Solution Approach 2:
The driving chip serves multiple functions simultaneously: it decodes digital clock signals, stores address data, processes light emission data, generates PWM signals, outputs driving current, and controls gating. This multi-functional design achieves high display resolution and brightness control while reducing overall device complexity through a single universal component rather than multiple specialized components
4Speed
If active driving method with driving chip is implemented, then response time is reduced, but power consumption increases
Solution Approach 1:
The driving chip operates in periodic phases (address writing phase, initialization phase, display phase) rather than continuously, consuming power only during active switching and current output periods. The gating circuit switches periodically based on PWM signals, and the current output circuit provides current only when needed, achieving fast response time while maintaining efficient power consumption through periodic operation
Solution Approach 2:
The current output circuit dynamically adjusts current magnitude and the gating circuit dynamically switches based on real-time PWM signals and address data, enabling fast response time. The circuit transitions between active and inactive states dynamically, consuming power only during necessary operations rather than continuously, thus achieving both fast response and efficient power consumption
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
The solution enables active driving, improving display resolution and reducing power consumption, with the driving chip providing a low driving voltage and short response time, facilitating high brightness and efficient light emission control.
Implementation Method 1
at least one light emitting device, a first electrode of the light emitting device being coupled to a first voltage line corresponding to the light emitting device
Data Source
AI summary
Pixel structure, driving method thereof and display device are disclosed. The pixel structure includes: light-emitting device having first electrode coupled to corresponding first voltage line. Driving chip includes: receiving circuit configured to decode first digital clock signal on first control line in display phase to obtain first address data and light emission data; address storage circuit configured to store reference address data before the display phase; data processing circuit configured to output PWM signal and current control signal corresponding to each light-emitting device according to the light emission data when the first address data is the same as the reference address data; current output circuit configured to output driving current according to the current control signal; and gating circuit configured to sequentially receive the PWM signal corresponding to each light-emitting device and transmit the driving current to the output terminal when the PWM signal is in active-level state.