Multi-Emitter Pixel Structure for High-Luminance Display Panels
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Solution Overview
Problem
Existing display devices struggle to achieve high luminance levels while maintaining efficient color representation and energy consumption.
Innovation Solution
The display device incorporates a pixel structure with a first sub-pixel containing a single large light emitting element and a second sub-pixel comprising multiple smaller light emitting elements, which are electrically connected in parallel, allowing for controlled emission time and current magnitude based on grayscale levels, and can display different colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single large light emitting element is used in each sub-pixel, then the device complexity is low and manufacturing is easier, but the peak luminance is limited
Solution Approach 1:
The second sub-pixel is divided into multiple smaller light emitting elements (e.g., four elements) instead of using a single large element. These elements are arranged in a 2x2 grid pattern and electrically connected in parallel, allowing the pixel to achieve higher peak luminance through combined light output while maintaining manageable device complexity through systematic segmentation
2Illumination intensity
If multiple light emitting elements are used in parallel, then the peak luminance increases, but the energy consumption increases
Solution Approach 1:
The pixel circuit includes dynamic control mechanisms that adjust the emission time and current magnitude of light emitting elements based on grayscale levels. In the second mode, the controller dynamically manages the parallel elements to achieve high peak luminance only when needed, while in the first mode, it uses a single element with controlled emission time to conserve energy during normal operation
Solution Approach 2:
The display device operates in different modes (first mode and second mode) with different light emitting strategies. The controller switches between modes based on display requirements, using multiple parallel elements periodically when high luminance is needed while relying on single element emission during normal operation, thereby reducing overall energy consumption
3Illumination intensity
If the emission time is controlled according to grayscale, then the color representation is efficient and energy consumption is reduced, but the peak luminance is limited
Solution Approach 1:
The pixel circuit is designed with multi-functionality to support different operating modes. The same pixel circuit can operate in the first mode (controlling emission time only) for normal display and switch to the second mode (controlling both emission time and current magnitude) for high luminance requirements, making the system universally applicable to various display scenarios without requiring separate hardware for each function
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 configuration enhances peak luminance by up to 50% compared to traditional designs, enabling higher luminance levels without increasing energy consumption.
Implementation Method 1
a first sub-pixel including a first light emitting element; and a second sub-pixel including a plurality of second light emitting elements
Data Source
AI summary
A display device includes a display panel including a pixel, a data driver providing a data voltage to the pixel, a gate driver providing a gate signal to the pixel, and a controller controlling the data driver and the gate driver. The pixel includes a first sub-pixel including a first light emitting element, and a second sub-pixel including multiple second light emitting elements.