Multistable Display Dynamic Waveform Driving at Low Clock Rates
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Solution Overview
Problem
Conventional multistable displays, such as cholesteric liquid crystal displays, require multiple bits to transport control data for different voltage sets, leading to high power consumption due to high clock rates.
Innovation Solution
A multistable display driven by a dynamic display scheme (DDS) with a lower clock rate, utilizing a time controller circuit unit and driver circuit unit to generate pixel display signals based on pixel dynamic display header and waveform data, allowing for independent control of voltage waveforms without re-supplying new values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple bits are used to transport control data for different voltage sets in conventional multistable displays, then display functionality is maintained, but power consumption increases due to high clock rates
Solution Approach 1:
The control data is segmented into two parts: a first part indicating voltage set selection and a second part indicating waveform configuration. This segmentation allows the system to use fewer bits for voltage selection (1 bit per pixel) while maintaining the ability to configure different waveforms, thereby reducing overall data transport requirements and power consumption while preserving display functionality.
Solution Approach 2:
The patent introduces dynamic waveform configuration where the same voltage set can be applied with different waveforms depending on the second control data part. This dynamic approach allows the system to maintain display functionality through voltage set selection while reducing the need to re-supply complete voltage values for every waveform change, thus lowering power consumption.
2Speed
If high clock rates are used to transport control data in conventional multistable displays, then data transmission speed is improved, but power consumption increases
Solution Approach 1:
By segmenting control data into voltage set indication and waveform configuration parts, the system reduces the number of bits that need to be transmitted at high speeds. The first control data part (1 bit) can be transmitted quickly to select voltage sets, while the second part configures waveforms without requiring complete data re-transmission, thereby maintaining acceptable transmission speed while reducing power consumption.
Solution Approach 2:
The system performs preliminary voltage set selection using the first control data part, establishing the base voltage configuration before applying waveform modifications through the second control data part. This preliminary action reduces the amount of data that needs to be transmitted at high speed, as only waveform adjustments are needed rather than complete voltage set re-transmission.
3Adaptability or versatility
If various sets of different voltages are required to drive the display for different duties, then display flexibility is improved, but control data complexity increases
Solution Approach 1:
The control data is segmented into a first part for voltage set selection and a second part for waveform configuration. This segmentation reduces control data complexity by separating the voltage selection function (1 bit per pixel) from the waveform configuration function, making the control structure more manageable while maintaining display flexibility across different duties.
Solution Approach 2:
The voltage sets selected by the first control data part serve multiple purposes: they can be applied with different waveforms configured by the second control data part. This multi-functionality allows a single voltage set to support multiple display duties through waveform variation, reducing the total number of unique voltage configurations needed while maintaining display flexibility.
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 approach significantly reduces the number of bits needed for data transport and lowers power consumption while maintaining display functionality.
Implementation Method 1
configuring a location corresponding to a pixel to have a specific voltage difference across the liquid crystal layer, and allowing the liquid crystal within the liquid crystal layer to correspondingly rotate to a specific angle
Data Source
AI summary
A multistable display driven by dynamic display scheme includes a time controller circuit unit, a driver circuit unit, and a screen unit. The time controller circuit unit generates a time controller signal, and a data signal included in the time controller signal further includes a pixel dynamic display header data and a pixel dynamic display waveform data. The driver circuit unit determines a pixel display voltage value of a pixel display driver signal according to the pixel dynamic display header data. The driver circuit unit also determines a pixel display driving time duration according to the half duty count and the pixel dynamic display waveform data, and the driver circuit unit outputs the pixel display driver signal with the pixel display voltage value to the screen unit for the pixel display driving time duration. The multistable display may be driven at a low clock rate to decrease power consumption.