Light-emitting Device Pixel Interlacing Driving Method
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Solution Overview
Problem
Current active matrix light-emitting diode (LED) displays face challenges in reducing the area of pixel circuits to enhance display resolution.
Innovation Solution
The implementation of a pixel interlacing driving method where adjacent light-emitting diodes share a pixel circuit, with selecting switches controlling the alternation of pixel data between two fields within a frame, allowing for reduced pixel circuit area and increased display resolution without increasing bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the area of pixel circuits is reduced to enhance display resolution, then the display resolution is improved, but the bandwidth requirement increases
Solution Approach 1:
The frame is divided into two interlaced fields: odd-field containing odd-numbered rows and even-field containing even-numbered rows. This segmentation allows the display to show different sets of rows in different fields, effectively doubling the perceived resolution without requiring double the bandwidth of a progressive scan system.
Solution Approach 2:
The display alternates between displaying the odd-field and even-field in a periodic manner. By rapidly switching between these two fields, the human eye perceives a complete high-resolution image, achieving enhanced display resolution while maintaining the original bandwidth constraints.
2Area of stationary object
If pixel circuits are shared between adjacent light-emitting diodes, then the total area of pixel circuits is reduced, but the control complexity increases
Solution Approach 1:
The pixel circuit is designed to dynamically switch between controlling different light-emitting diodes based on the field being displayed. During odd-field display, the pixel circuit controls odd-numbered LEDs, and during even-field display, it controls even-numbered LEDs, achieving area reduction without permanent increase in control complexity.
Solution Approach 2:
Each pixel circuit is designed to serve multiple functions by controlling different light-emitting diodes in different fields. The same pixel circuit infrastructure is reused for both odd and even row control, reducing total circuit area while managing complexity through standardized multi-functional design.
Data Source
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AI summary
A light-emitting device (2) is used to emit light in a frame split into a first field (A) and a second field (B). The light-emitting device (2) includes a scan line (Lscan(1)); a first data line (Ldata(1)) and a second data line (Ldata(2)); a first pixel circuit (10[1,1]) coupled to the scan line (Lscan(1)) and the first data line (Ldata(1)); a second pixel circuit (10[1,2]) coupled to the scan line (Lscan (1)) and the second data line (Ldata(2)); a first light-emitting diode (D[1,1]) and a second light-emitting diode (D[2,1]) driven by the first pixel circuit (10[1,1]); and a third light-emitting diode (D[1,2]) and a fourth light-emitting diode (D[2,2]) driven by the second pixel circuit (10[1,2]). The first light-emitting diode (D[1,1]) and the fourth light-emitting diode (D[2,2]) are driven in the first field (A). The second light-emitting diode (D[2,1]) and the third light-emitting diode (D[1,2]) are driven in the second field (B) .