LED Substrate Series Connection for Backlight Assembly
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Solution Overview
Problem
Conventional LED substrate units in display apparatuses require multiple connectors and cables, leading to increased production costs due to complex circuit configurations and size constraints.
Innovation Solution
The display apparatus features LED substrate units with a simplified configuration where two LED substrates are aligned in a line, sharing connectors and cables, and using inter-substrate connectors to reduce the number of connections needed, allowing for equivalent configurations and reduced production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple LED substrates are used to meet size constraints, then the backlight can be made compact, but the number of connectors and cables increases leading to higher production costs
Solution Approach 1:
The patent merges the circuit configurations of multiple LED substrates by connecting them in series through shared connectors. Specifically, the second terminal of the first connector on one LED substrate is connected to the first terminal of the first connector on the next LED substrate, allowing multiple substrates to be electrically integrated without requiring separate connectors for each substrate.
Solution Approach 2:
The first connector design serves multiple functions: it provides electrical connection to the LED array, enables series connection between adjacent LED substrates through terminal interconnection, and reduces the total connector count. This multi-functional design allows a single connector type to handle multiple connection requirements across different substrates.
2Reliability
If multiple connectors and cables are used for each LED substrate, then reliable electrical connection is achieved, but production costs increase
Solution Approach 1:
The patent combines multiple electrical connection functions into a single connector design. The first connector on each LED substrate integrates the LED array connection and the inter-substrate connection capabilities, reducing the total number of connectors from three per substrate unit to two, thereby lowering production costs while maintaining connection reliability.
3Reliability
If different circuit configurations are used for different LED substrates, then specific electrical requirements are met, but manufacturing complexity and costs increase
Solution Approach 1:
The patent applies homogeneity by using identical first connector designs on all LED substrates. Each first connector has the same terminal configuration (first terminal connected to LED anode, second terminal connected to LED cathode), allowing all substrates to be manufactured and assembled using the same circuit configuration pattern, thereby reducing manufacturing complexity.
Solution Approach 2:
The patent segments the backlight into multiple identical LED substrate units that can be independently manufactured and then assembled in series. Each substrate unit is a standardized module with the same connector configuration, allowing flexible assembly while maintaining circuit uniformity across the entire backlight assembly.
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 configuration reduces the number of connectors and cables, lowering production costs and facilitating easier assembly, while maintaining equivalent functionality across multiple LED substrates.
Implementation Method 1
a backlight which emits light toward a back surface of the display panel; and a power circuit which supplies power to the backlight, wherein the backlight includes one or more light-emitting diode (LED) substrate units, each LED substrate unit includes a first LED substrate and a second LED substrate... each of the first LED substrate and the second LED substrate includes: on a main surface thereof, a plurality of LEDs connected in series
Data Source
AI summary
A first LED substrate and a second LED substrate are included each of which includes: on a main surface thereof, a plurality of LEDs connected in series in a longitudinal direction; a first connector including (i) a first terminal disposed on one of short sides of the LED substrate and connected to an anode of an LED positioned first among the LEDs connected in series, and (ii) a second terminal connected to a cathode of another LED positioned last among the LEDs connected in series. The second terminal of the first LED substrate and the first terminal of the second LED substrate are interconnected. The first terminal of the first LED substrate is connected to a positive terminal of a power circuit and the second terminal of the second LED substrate is connected to a negative terminal of the power circuit.