LCD Data Driving Module Integration Reduces Manufacturing Cost
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Solution Overview
Problem
The high manufacturing cost of liquid crystal displays (LCDs) is attributed to the expensive data driving module, which requires high mobility transistors and is difficult to integrate directly on insulating substrates, leading to increased costs due to the number of data lines and modules needed.
Innovation Solution
The design includes a liquid crystal panel with gate and data lines arranged in a specific configuration to reduce the number of data driving modules and lines, using a chip film package as a data driving module connected to the data lines and a gate driving module integrated on the panel, along with a printed circuit board providing image signals, and a light guide plate with a light source module to minimize thickness and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data driving modules are used to drive data lines in conventional LCD configurations, then the LCD can function properly, but the manufacturing cost increases considerably
Solution Approach 1:
The patent extracts the data driving function from separate discrete modules and integrates it directly into the liquid crystal panel by forming data driving transistors and data lines on the same substrate as the pixel electrodes, eliminating the need for separate data driving modules and reducing manufacturing cost
Solution Approach 2:
The patent merges the data driving module functionality with the liquid crystal panel structure by integrating data driving transistors, data lines, and pixel electrodes on a single substrate, combining multiple functions into one unified structure to reduce component count and manufacturing complexity
2Productivity
If the number of data lines connected to each data driving module increases, then the data driving capacity improves, but the number of data driving modules required increases and manufacturing cost increases considerably
Solution Approach 1:
The patent transitions from a vertical stacking architecture (separate modules stacked) to a planar integrated architecture (all components on the same substrate), utilizing the two-dimensional plane of the substrate to accommodate both pixel electrodes and data driving transistors, thereby increasing data driving capacity without adding vertical module layers
3Ease of manufacture
If data driving modules are directly formed on insulating substrates as integrated circuits, then the manufacturing process is simplified, but it is difficult to achieve due to technical constraints
Solution Approach 1:
The patent changes the substrate parameter from insulating to conductive (using a conductive substrate instead of an insulating one), which enables the direct formation of integrated data driving circuits on the substrate while maintaining electrical connectivity and simplifying the manufacturing process
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 manufacturing cost by minimizing the number of data driving modules and lines, improving the aperture ratio, and allowing for more efficient light distribution, thereby lowering overall production expenses while maintaining image quality.
Implementation Method 1
An LCD may display desired images by generating an electric field between the plurality of pixel electrodes and the common electrode, and adjusting the intensity of the electric field so as to control the amount of light transmitted through the liquid crystal panel
Implementation Method 2
a liquid crystal panel including a dielectric-anisotropy liquid crystal layer interposed between the first and second display panels
Implementation Method 3
a light guide plate overlapping the liquid crystal panel, a light source module providing light to the light guide plate
Data Source
AI summary
A liquid crystal display includes a liquid crystal panel including short sides and long sides, a plurality of gate lines disposed on the liquid crystal panel and extending substantially in parallel with the short sides of the liquid crystal panel, a plurality of data lines insulated from the gate lines, intersecting the gate lines and extending substantially in parallel with the long sides of the liquid crystal panel, a printed circuit board disposed near one of the short sides of the liquid crystal panel and providing an image signal to the liquid crystal panel, a light guide plate overlapping the liquid crystal panel, a light source module providing light to the light guide plate and a circuit board on which the light source module is mounted.