Light Emitting Substrate Circuit Layout for Low-Power Color Control
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Solution Overview
Problem
Existing light emitting substrates face challenges in efficiently driving light emitting elements while minimizing power consumption, particularly when a large number of light emitting elements are connected in series, which can lead to difficulties in driving the circuit and increased power consumption.
Innovation Solution
The light emitting substrate employs a combination of series and parallel connections for light emitting elements of the same color, reducing total current and power consumption, and uses different voltage signal lines for light emitting elements of different colors to achieve independent control and field sequence color display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a large number of light emitting elements are connected in series, then the luminance and color gamut are improved, but the power consumption increases and circuit driving becomes difficult
Solution Approach 1:
The patent divides the light emitting elements into multiple groups (first group, second group, third group, fourth group) with different connection configurations. Each group has a different number of elements connected in series, allowing the system to achieve high luminance through selective activation while managing power consumption by not requiring all elements to operate at maximum intensity simultaneously.
2Illumination intensity
If a large number of light emitting elements are connected in series, then the color gamut is improved, but the circuit driving complexity increases
Solution Approach 1:
The light emitting elements are segmented into four distinct groups with different series connection configurations. This segmentation simplifies circuit driving by allowing independent control of each group, reducing the overall complexity compared to controlling a single large series string of all elements.
Solution Approach 2:
The patent implements dynamic control where different groups of light emitting elements can be activated or deactivated based on display requirements. The controller can selectively drive different groups at different times or simultaneously with varying intensities, providing flexibility in managing circuit complexity while maintaining color gamut quality.
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
This approach enables efficient driving of light emitting elements while reducing power consumption and allowing for high color gamut and uniform illuminance, facilitating field sequence color display and improved luminance in reflective display panels.
Implementation Method 1
a respective one of the plurality of light emitting controlling units comprises p number of sub-units, p is an integer greater than one; each of the n columns of light emitting elements in the P-th sub-unit includes multiple rows of light emitting elements electrically connected in series
Data Source
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AI summary
A light emitting substrate is provided. The light emitting substrate includes a plurality of light emitting controlling units arranged in M rows and N columns, M is an integer equal to or greater than one, N is an integer equal to or greater than one. A respective column of the N columns of light emitting controlling units includes M number of groups of second voltage signal lines, a respective group of the M number of groups of second voltage signal lines connected to a respective one of the M number of light emitting controlling units, the respective group of the M number of groups of second voltage signal lines including k number of second voltage signal lines, k is an integer equal to or greater than one.