Liquid Crystal Display Controller Power Supply Integration
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Solution Overview
Problem
The existing liquid crystal display devices with separate controller and power supply circuits outside the panel face challenges in reducing manufacturing costs and improving reliability due to increased component count.
Innovation Solution
Integration of the controller and power supply circuit into a single chip system IC, disposed on the peripheral region of the liquid crystal display panel, reduces the number of components and minimizes the size of the peripheral region, allowing for efficient power supply and control of the driving circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controller and power supply circuit are disposed outside the liquid crystal display panel as separate components, then the control and power supply functions can be independently implemented, but the number of components increases leading to higher manufacturing cost and deteriorated reliability
Solution Approach 1:
The controller and power supply circuit are integrated into a single chip, reducing the number of separate components. This merging of functions into one integrated circuit improves reliability by reducing connection points and component count while maintaining all necessary control and power supply capabilities.
2Ease of manufacture
If the controller and power supply circuit are disposed outside the liquid crystal display panel, then the design flexibility is maintained, but the manufacturing cost increases due to increased component count
Solution Approach 1:
By integrating the controller and power supply circuit into one chip, the manufacturing process is simplified. Fewer components mean fewer assembly steps, reduced inventory management complexity, and lower overall manufacturing costs despite the increased functionality within the single chip.
3Area of stationary object
If separate controller and power supply circuits are used outside the panel, then independent optimization of each circuit is possible, but the peripheral region size increases
Solution Approach 1:
The integration of controller and power supply circuit into a single chip significantly reduces the space required in the peripheral region. This consolidated approach eliminates the need for separate mounting areas and connection pathways for multiple discrete components, thereby minimizing the overall peripheral region footprint.
Data Source
AI summary
A liquid crystal display device includes a liquid crystal display panel PNL including a pair of mutually opposed substrates, a display section which is composed of a plurality of matrix-arrayed display pixels, and a peripheral region surrounding the display section, a driving circuit, which drives the display pixels, a controller which controls the driving circuit, and a power supply circuit which supplies power to the driving circuit and the controller, wherein the controller and the power supply circuit are built in a 1-chip system IC and are disposed on the peripheral region.