Light Emitting Substrate Addressing for Cuttable Display Modules
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Solution Overview
Problem
Existing light emitting diode substrates are not suitable for cutting large substrates into small ones due to a circuit design where only the drive circuits of the first light emitting units in the top row can receive an address signal, resulting in only those units connected in series having a display function, while others do not.
Innovation Solution
A light emitting substrate design where the address line is connected directly to the drive circuit of at least one light emitting unit in the last row, allowing each light emitting unit to receive an independent address signal, enabling the creation of small substrates with uniform brightness and maintaining display functionality after cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the address line is connected only to the drive circuit of the first light emitting unit in the top row, then the circuit design is simple, but only light emitting units connected in series have display function and the substrate cannot be cut into small substrates
Solution Approach 1:
The patent divides the large substrate into multiple small substrates by introducing multiple address lines that can independently address different rows of light emitting units. Each small substrate can be independently controlled and displayed, enabling the large substrate to be segmented and reused without waste.
Solution Approach 2:
The patent extends the address line connection from a single-row topology to a multi-row two-dimensional addressing scheme. By connecting address lines to drive circuits in the last row and enabling series connection across rows, the system transitions from one-dimensional to two-dimensional addressable space, allowing substrates to be cut and reconfigured in different sizes.
2Manufacturing precision
If light emitting units are connected in series from the first row, then all units can receive address signals, but the brightness uniformity is poor and the substrate cannot be adapted to different application scenarios
Solution Approach 1:
The patent segments the substrate into multiple independently addressable rows by providing address lines that connect to drive circuits in the last row. This allows each row to be independently controlled, improving brightness uniformity across the entire substrate and enabling flexible configuration for different application scenarios.
Solution Approach 2:
The patent creates a universal substrate design where the same large substrate can be cut and configured for multiple different application scenarios. By enabling independent addressing of multiple rows and allowing flexible substrate cutting, the system achieves multi-functionality where one substrate design serves multiple display size and configuration requirements.
3Adaptability or versatility
If the substrate is cut into small substrates, then different sizes can be obtained for different applications, but existing circuit designs cause loss of display function in uncaptured units
Solution Approach 1:
The patent performs preliminary action by pre-configuring multiple address lines and establishing complete addressing paths to all rows before the substrate is cut. This ensures that even after cutting, the remaining light emitting units maintain their display function because the addressing infrastructure is already in place and does not depend on the original substrate boundaries.
Solution Approach 2:
The patent enables reliable segmentation of the substrate into multiple small substrates by implementing an addressing system that is independent of substrate boundaries. Each segment maintains full display functionality because the address lines and drive circuits are configured to address units based on their logical position rather than physical substrate continuity.
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 design allows for the creation of light emitting substrates of various sizes with improved uniformity in brightness and ensures all light emitting units connected to the address line maintain their display function, even after cutting, thus enhancing the utility of the substrate.
Implementation Method 1
a light zone 220 provided with at least one light emitting diode
Data Source
AI summary
A light emitting substrate, a light emitting motherboard, a method for obtaining a light emitting substrate, and a displaying device. The light emitting substrate comprises a substrate and multiple light emitting units, wherein the substrate is provided with a light emitting region and a bind region located on one side of the light emitting region; each light emitting unit comprises a light zone provided with at least one light emitting diode and a drive circuit provided with multiple pins, and the multiple light emitting units are arranged on the substrate in an array; a direction pointing from the light emitting region to the bind region is a first direction; and in the first direction, the drive circuit of at least one light emitting unit in the last row of the light emitting units is connected to an address line.