Adaptive Sub-Pixel Arrangement for Display Brightness Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-resolution display panels face challenges in achieving balanced brightness across images due to increased complexity and power consumption, leading to issues like white borders and poor display quality.
Innovation Solution
A display panel design that includes sub-pixel repeating units with varying arrangements of first, second, third, and fourth color sub-pixels, where the area of the polygon formed by adjacent first color sub-pixels is at least twice as large as that of second color sub-pixels, to adaptively adjust brightness and prevent excessive enhancement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of display panel is increased, then the image quality is improved, but the aperture ratio is reduced and power consumption increases
Solution Approach 1:
The display panel is divided into multiple sub-pixel types (red, green, blue, and white sub-pixels) within each pixel unit. This segmentation allows the white sub-pixels to provide high transmittance for grayscale regions while colored sub-pixels maintain saturation for pure color regions, achieving high resolution without uniformly increasing power consumption across all sub-pixels.
Solution Approach 2:
Different sub-pixel types are assigned different functions based on their local characteristics: white sub-pixels are used for grayscale regions requiring high transmittance, while colored sub-pixels are used for pure color regions requiring high saturation. This local quality differentiation allows the display to achieve high resolution with optimized power consumption in different regions.
2Illumination intensity
If the brightness of grayscale edge is enhanced excessively, then the transmittance is improved, but abnormal display problems occur
Solution Approach 1:
The display panel uses different sub-pixel types (white vs. colored) in different locations to provide different brightness enhancement characteristics. White sub-pixels enhance brightness in grayscale regions without causing excessive brightness in pure color regions, thereby preventing abnormal display effects while maintaining improved transmittance where needed.
Solution Approach 2:
The patent employs sub-pixel rendering technology that virtually generates additional sub-pixels through algorithmic processing. This creates a higher effective resolution without physically increasing the number of sub-pixels, thereby avoiding the need to excessively enhance brightness of physical sub-pixels and preventing the associated abnormal display problems.
3Device complexity
If the number of thin film transistors is increased, then the pixel circuit complexity is improved, but the layout area is occupied
Solution Approach 1:
The pixel circuit is segmented into multiple shared transistor groups that can serve multiple sub-pixel types. Instead of dedicating separate transistors to each red, green, blue, and white sub-pixel, the circuit uses shared control transistors that are multiplexed across different sub-pixel types, reducing the total transistor count while maintaining the ability to drive all sub-pixel types independently.
Solution Approach 2:
The pixel circuit design employs universal transistor structures that can control multiple sub-pixel types through time-multiplexed or space-multiplexed signaling. This multi-functionality allows a reduced set of transistors to control a larger number of sub-pixels, thereby reducing layout area occupation while maintaining circuit capability.
Data Source
AI summary
A display panel including a plurality of sub-pixel repeating units is provided. The sub-pixel repeating units are repeatedly arranged on the display panel. Each of the sub-pixel repeating units includes at least one first color sub-pixel and at least one second color sub-pixel. On the display panel, the adjacent first color sub-pixels form a first polygon, and the adjacent second color sub-pixels form a second polygon. The area of the first polygon is at least twice the area of the second polygon.