Source Driver Heat Reduction via Segmented Voltage Alternation
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Solution Overview
Problem
As the size and resolution of liquid crystal display (LCD) devices increase, the load on the source driver increases, leading to a heat problem due to the generation of heat from the source driver.
Innovation Solution
The implementation of a display device with a voltage generator that alternately provides first and second driving voltages to separate source drivers, allowing each source driver to generate data voltages of opposite polarities, thereby reducing the load and size of the integrated circuits and minimizing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the size and resolution of the LCD device are increased, then the display quality is improved, but the load on the source driver increases and heat generation occurs
Solution Approach 1:
The source driver is divided into two separate source drivers: a first source driver that generates data voltages of first polarity and a second source driver that generates data voltages of second polarity. This segmentation allows each source driver to operate with reduced load, thereby reducing heat generation while maintaining high resolution display capability
Solution Approach 2:
The voltage generator alternately provides first driving voltages and second driving voltages to the first and second source drivers in a periodic manner. This alternating operation enables the source drivers to operate at lower power levels while still delivering the required data voltages to maintain display resolution and quality
2Device complexity
If a single source driver is used to provide data voltages, then the device structure is simple, but the integrated circuit size and load increase leading to heat problems
Solution Approach 1:
The single source driver is segmented into two separate source drivers with specialized functions. The first source driver handles data voltages of first polarity while the second source driver handles data voltages of second polarity. This segmentation reduces the operational load on each individual source driver, decreasing heat generation despite the increased structural complexity
Solution Approach 2:
The voltage generator performs multiple functions by alternately providing different driving voltages to different source drivers. It generates both first driving voltages for the first source driver and second driving voltages for the second source driver, enabling efficient power management and heat reduction across the system
Data Source
AI summary
A display device includes a display panel including first data lines, second data lines, gate lines, and a plurality of pixels, a voltage generator which generates a first driving voltage and a second driving voltage, and a source driver which generates a first data voltage having a first polarity based on the first driving voltage and a second data voltage having a second polarity based on the second driving voltage. The source driver includes a first source driver coupled to the first data lines and a second source driver coupled to the second data lines. The voltage generator alternately provides the first driving voltage and the second driving voltage to each of the first source driver and the second source driver.