Pixel Circuitry Memory Buffer for Display Bandwidth Reduction
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Solution Overview
Problem
Existing electronic displays face challenges in managing increased image data with higher resolutions, leading to higher power consumption and bandwidth requirements.
Innovation Solution
Implementing memory-in-pixel circuitry that acts as an individual frame buffer for each pixel, reducing the reliance on external frame buffers and simplifying display design by minimizing concurrent image data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If higher resolution displays are implemented, then image quality is improved, but bandwidth requirements and power consumption increase
Solution Approach 1:
The patent divides the frame buffer functionality into two parts: a small local memory buffer within each pixel circuit and the remaining storage capacity provided by the display driver integrated circuit. This segmentation allows high-resolution images to be stored efficiently by distributing storage across many small pixel-level buffers rather than requiring a single large external buffer, thereby reducing the bandwidth and power needed for data transmission while maintaining image quality.
2Measurement precision
If higher resolution displays are implemented, then image quality is improved, but transmission bandwidth requirements increase
Solution Approach 1:
The patent implements preliminary action by having pixel circuits perform local image processing and data compression before transmitting data to the display driver. Each pixel's memory buffer stores and processes image data locally, preparing it in advance for transmission. This preliminary processing at the pixel level reduces the amount of data that needs to be transmitted across the display interface, thereby reducing bandwidth requirements while maintaining high-resolution image quality.
3Quantity of substance
If external frame buffers are used, then image data storage is achieved, but device complexity increases
Solution Approach 1:
The patent merges the frame buffer functionality with the display driver integrated circuit, combining what were previously separate components into a single unified device. The pixel circuits include small local memory buffers, and the display driver integrates the remaining frame buffer capacity, eliminating the need for a separate external frame buffer component. This merging reduces device complexity and simplifies the overall display system architecture while maintaining adequate image data storage capacity.
Data Source
AI summary
A pixel circuit for an electronic display may include a memory to store a digital data signal indicative of a value within a data range. The pixel circuit may also include a light-emitting diode to emit light based at least in part on the digital data signal. The pixel circuit may also include an initialization transistor to initialize the pixel circuit before the light-emitting diode emits light and a driving transistor to activate based at least in part on the digital data signal.