Light-Emitting Display Pixel Circuit for Selective Binary-Signal Updates
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Solution Overview
Problem
Existing display screens face limitations in resolution and operation speed due to varying propagation times of signals between display pixels and control circuits, and they require full-row updates even for partial image changes.
Innovation Solution
A display pixel design with an electronic circuit that includes a storage circuit and driver circuit, utilizing specific binary signal patterns to selectively update pixels, allowing partial image updates and flexible operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If signal propagation time variations are considered for correct pixel selection and data transmission, then display accuracy is improved, but resolution and operation speed are limited
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing propagation time compensation values in a lookup table within each pixel's memory. Instead of calculating propagation times in real-time during operation, the system prepares compensation data in advance, allowing fast retrieval during pixel selection and data transmission without limiting operation speed.
2Ease of operation
If whole rows of display pixels are updated, then simple control is maintained, but unnecessary data transmission occurs for partial image changes
Solution Approach 1:
The patent implements segmentation by dividing the display screen into independently controllable pixel regions. Each pixel can be individually selected and updated based on whether its content has changed, rather than updating entire rows. This is achieved through the dual-signal selection mechanism that enables precise pixel-level addressing, allowing only necessary pixels to receive update data.
Solution Approach 2:
The patent applies partial action by updating only the specific pixels that require content changes rather than updating entire rows. The system determines which pixels need updates and sends data only to those pixels, reducing unnecessary data transmission while maintaining simple control through the standardized dual-signal selection protocol.
3Productivity
If high resolution and operation speed are achieved, then propagation time variations become significant, but control complexity increases
Solution Approach 1:
The patent implements self-service by embedding propagation time compensation functionality directly within each pixel's local circuitry. Each pixel independently retrieves its compensation value from its own memory using its position-encoded address, eliminating the need for complex centralized propagation time calculation and distribution control. This decentralized approach maintains simple external control while enabling high-resolution, high-speed operation.
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
Enhances resolution and operation speed by enabling selective pixel updates, reducing unnecessary data transmission, and supporting low-power, low-speed operations for display screens.
Implementation Method 1
Each display sub-pixel may comprise a light source, particularly a light-emitting diode
Implementation Method 2
at least three components, also called display sub-pixels, which each emit a light radiation, called image pixel color component substantially in a single color
Data Source
AI summary
A display pixel including at least one light-emitting source and an electronic circuit including a storage circuit for storing at least one digital signal and a driver circuit for driving said light-emitting source based on stored digital signal, said display pixel including at least a first conductive pad intended to receive a first binary signal and a second conductive pad intended to receive a second binary signal, the first and second electrically conductive pads being connected to said electronic circuit. Said electronic circuit is configured to update said stored digital signal from the second binary signal after the detection of a first pattern of the first binary signal simultaneously with a second pattern of the second binary signal.