Multi-grayscale Pixel Driving Circuit for High Grayscale Display
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Solution Overview
Problem
Current pixel units in display panels can only achieve a limited number of grayscales, making them suitable only for low grayscale displays and unable to meet high grayscale requirements.
Innovation Solution
A multi-grayscale pixel driving circuit is introduced, comprising a driving module, a light emitting module, and a light emitting control module coupled in series between electrodes, which control the light emitting situation of the light emitting module according to a preset time sequence to realize multi-grayscale displays by coordinating the electric potential and using multiple light emitting units in series and parallel connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a limited number of light emitting devices are used in each pixel unit, then the device complexity is reduced and manufacturing is simplified, but the grayscale display capability is limited to low grayscale only
Solution Approach 1:
The pixel unit is segmented into multiple subpixel circuits (first subpixel circuit, second subpixel circuit, third subpixel circuit) with different light emitting devices (first light emitting device, second light emitting device, third light emitting device). Each subpixel circuit can be independently controlled to emit at different grayscale levels, enabling high grayscale display while maintaining simple individual circuit structures.
2Adaptability or versatility
If multiple light emitting devices with different spectral characteristics are introduced, then high grayscale display capability is achieved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The pixel unit is designed with multiple subpixel circuits that can serve multiple functions: each subpixel circuit can emit light at different grayscale levels independently, and their combined output achieves high grayscale display capability. The first subpixel circuit emits first light, the second subpixel circuit emits second light, and the third subpixel circuit emits third light, with each contributing to the overall grayscale representation.
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 solution significantly improves the number of grayscales that can be displayed, enabling both low and high grayscale displays, surpassing the limitations of prior art by allowing more nuanced color representation.
Implementation Method 1
the driving module and the light emitting module control a light emitting situation of the light emitting module according to a preset time sequence to realize multi-grayscale display
Data Source
AI summary
A multi-grayscale pixel driving circuit and a display panel are provided. A driving module, a light emitting module, and a light emitting control module are coupled in series between a first electrode and a second electrode in the multi-grayscale pixel driving circuit. A light emitting situation of using the driving module and the light emitting control module to control the light emitting module to emit light according to a preset time sequence allows the light emitting module to realize multi-grayscale displays of low grayscale or high grayscale, greatly improving a grayscale number for displaying in the display panel.