Display Panel Pixel Circuit Topology for Power Reduction
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Solution Overview
Problem
Display devices face challenges in reducing power consumption due to frequent changes in data signal gradation levels, which lead to increased power consumption and heat generation.
Innovation Solution
The display panel is designed with a configuration where first and second pixel parts in different rows have their light emitting elements and pixel circuits electrically connected or separated, with specific data lines receiving distinct color signals, and dummy pixel parts connected to additional data lines, allowing for optimized data signal output and reduced signal level changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data signals with varying gradation levels are provided to each pixel circuit independently, then display quality is improved, but power consumption increases due to frequent signal level changes
Solution Approach 1:
The patent merges multiple pixel circuits that share common light emitting elements into groups, where a single data signal can control multiple pixels simultaneously. This reduces the number of independent data signal transmissions and minimizes frequent gradation level changes, thereby lowering power consumption while maintaining display quality through coordinated pixel operation.
Solution Approach 2:
The patent implements a universal data line structure where a single data line can serve multiple pixel circuits across different rows and columns. This multi-functional approach allows the same data signal to be reused for controlling multiple light emitting elements of the same color, reducing redundant signal transmissions and associated power consumption.
2Measurement precision
If separate data lines are provided for each pixel circuit, then signal control precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the pixel array into distinct groups based on light emitting element types and row/column positions. Each segment shares common data lines with other segments of the same type, reducing the total number of data lines required while maintaining precise signal control within each segment through dedicated control circuits.
Solution Approach 2:
The patent introduces a dimensional organization where data lines are arranged in a systematic grid pattern across multiple rows and columns. This spatial dimensionality allows a reduced set of data lines to cover a larger pixel area by utilizing row and column addressing, thereby reducing device complexity without sacrificing signal control precision.
Data Source
AI summary
A display panel includes a plurality of first pixel parts disposed in a first row, a plurality of second pixel parts disposed in a second row and including a first pixel part that includes a first pixel circuit and a first light emitting element which are electrically separated from each other, and a second pixel part that includes a second pixel circuit and a second light emitting element which are electrically separated from each other. The first light emitting element of the first pixel part is electrically connected to the second pixel circuit of the second pixel part.