Pixel Circuit Capacitor Series Topology for HDR Power Reduction
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Solution Overview
Problem
Display devices face challenges in handling high-resolution image data conversions, requiring dedicated circuits for HDR processing which leads to higher power consumption, and struggle with displaying images of different resolutions without data conversion.
Innovation Solution
A display device design incorporating multiple capacitors and transistors connected in series, allowing for image data correction and HDR display without conversion, enabling the display of multiple images superimposed on each other and applying voltages higher than the driver circuit output, while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated circuits are used for HDR processing and high-resolution image data conversion, then image quality and display capabilities are improved, but power consumption increases
Solution Approach 1:
The patent extracts the image processing function from dedicated conversion circuits and relocates it to the pixel circuit itself. By placing the processing capability directly where it is needed (in the pixel), the system eliminates the need for separate dedicated circuits, thereby reducing overall power consumption while maintaining high-resolution and HDR display capabilities
Solution Approach 2:
The patent moves the image processing operation from the circuit level (external to pixel) to the pixel level (internal to display element). This dimensional shift in where processing occurs allows the system to handle high-resolution and HDR data without requiring additional dedicated processing circuits, thus reducing power consumption
2Adaptability or versatility
If data conversion is performed for HDR processing, then display capabilities are improved, but device complexity increases
Solution Approach 1:
The patent merges the image processing function with the pixel circuit by integrating capacitors and transistors directly into the pixel structure. This combination allows HDR processing and multi-resolution support to be achieved within the existing pixel circuitry, eliminating the need for separate dedicated processing circuits and reducing overall device complexity
Solution Approach 2:
The patent designs the pixel circuit to perform multiple functions: it can display standard-resolution images, high-resolution images, HDR content, and multiple superimposed images using the same circuit structure. This multi-functional design eliminates the need for separate dedicated circuits for different display modes, thereby reducing device complexity while maintaining versatility
3Measurement precision
If multiple capacitors and transistors are connected in series for image data correction, then image quality and HDR display are improved, but device complexity increases
Solution Approach 1:
The patent segments the image processing function into discrete capacitive elements (first capacitor, second capacitor) and transistor elements within the pixel circuit. By dividing the processing into separate stages handled by individual components connected in series, the circuit can perform complex HDR processing and image correction while using only standard, well-understood circuit elements, thereby limiting the increase in device complexity
Data Source
AI summary
A display device capable of improving image quality is provided. The display device includes a plurality of capacitors, a plurality of transistors, and a display element in a pixel. The plurality of capacitors are connected in series through a wiring, and one of the plurality of transistors is electrically connected to one electrode of the plurality of capacitors connected in series, the other electrode thereof, and the wiring. The display element can operate in accordance with the sum of a plurality of pieces of input data, so that image correction such as image upconversion, HDR display, or improvement in the luminance can be performed.