Segmented Backlight Light Bar Assembly for Display Modules
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Solution Overview
Problem
Existing LCD backlight modules require different lengths for various display sizes, leading to complex manufacturing processes and inefficiencies in sharing light bars and heat sinks.
Innovation Solution
A modular backlight module design featuring adjustable light bar assemblies and heat sink units of varying lengths, allowing for flexible use across different display sizes, with light bar units and heat sink units specifically configured to match display module dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated light bars of different lengths are used for different display sizes, then optical performance is ensured, but device complexity and manufacturing complexity increase
Solution Approach 1:
The light bar is divided into multiple light bar units of the same length that can be sequentially connected. For example, a 600mm light bar is segmented into six 100mm units, allowing flexible assembly to match different display module lengths while maintaining consistent optical characteristics through standardized units.
Solution Approach 2:
The light bar units are designed as universal standardized components that can be used across different display sizes. The same 100mm light bar unit can be assembled in different quantities (e.g., 4 units for 400mm, 6 units for 600mm) to serve multiple display module lengths, eliminating the need for dedicated light bars for each size.
2Temperature
If heat sinks are arranged specifically for each light bar length, then thermal management is optimized, but manufacturing efficiency decreases
Solution Approach 1:
The heat sink is segmented into multiple heat sink units corresponding to the light bar units. Each 100mm light bar unit has a matching 100mm heat sink unit, and these standardized units can be assembled in different quantities to match different total lengths, optimizing thermal management for each configuration without requiring custom heat sinks.
Solution Approach 2:
The standardized heat sink units serve multiple display configurations universally. The same 100mm heat sink unit can be used in various quantities across different display sizes (e.g., 4 units for 400mm display, 6 units for 600mm display), improving manufacturing efficiency while maintaining optimal thermal management.
3Device complexity
If light bar units are made longer (X≥1 times display unit length), then fewer units are needed, but adaptability to different display sizes decreases
Solution Approach 1:
The system uses standardized light bar units with fixed length parameters (e.g., 100mm units) that can be combined in different quantities to achieve different total lengths. This parameter-based approach allows flexible adaptation to various display sizes while maintaining consistent component specifications and manufacturing processes.
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 simplifies manufacturing by enabling the use of standardized light bar and heat sink components across multiple display sizes, reducing retooling and material reordering complexities while maintaining uniform optical performance.
Implementation Method 1
heat sink units... thermally coupled to the at least one first light bar unit
Implementation Method 2
heat sink units... dissipating heat to maintain operational temperature
Data Source
AI summary
A display device includes at least one display module and a backlight module. The display module includes display units and N driving chips. The N driving chips are arranged along a first direction and electrically connected to the display units. The display units are connected and arranged in N rows in the first direction and M columns in a second direction. N and M are respectively greater than or equal to 1. The backlight module includes a light bar assembly adapted to be disposed below a column of the M columns of the display units farthest from the driving chips, and a length of the light bar assembly corresponds to that of the display units along the first direction. The light bar assembly includes at least one first light bar unit. A length of each first light bar unit is X times the length of each display unit along the first direction, and X is greater than or equal to 1.