Display Panel Driving Circuit Voltage Booster Integration
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Solution Overview
Problem
Existing driving circuits for display panels require large external storage capacitors, increasing manufacturing costs and circuit area, which is undesirable for compact and efficient designs.
Innovation Solution
The implementation of a plurality of voltage booster units that provide supply voltage to driving units, reducing or eliminating the need for an external storage capacitor, thereby shrinking the circuit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voltage booster circuit is connected externally to maintain output signal level, then the signal level is maintained, but the circuit area and manufacturing cost increase due to large storage capacitor requirements
Solution Approach 1:
The patent merges the voltage booster function with the driving unit by integrating the voltage boosting circuit directly into the driving unit structure. This integration eliminates the need for separate external voltage booster circuits and large storage capacitors, thereby reducing overall circuit area while maintaining signal level stability through the combined unit's internal voltage regulation mechanisms.
Solution Approach 2:
The driving unit is designed with multi-functionality, incorporating both driving functions and voltage boosting functions within a single unit. This universal design allows the driving unit to perform multiple tasks (signal driving and voltage regulation) without requiring separate dedicated circuits, thus reducing the total circuit area while ensuring reliable signal level maintenance.
2Reliability
If an external storage capacitor is used to maintain voltage level, then the voltage level is stable, but the manufacturing cost increases
Solution Approach 1:
The voltage boosting function is merged into the driving unit, eliminating the need for separate external storage capacitors. This integration reduces component count and simplifies assembly processes, thereby reducing manufacturing costs while maintaining voltage level stability through the internal voltage regulation mechanisms of the integrated unit.
Solution Approach 2:
The patent extracts the voltage boosting function from the external voltage booster circuit and relocates it within the driving unit. This extraction eliminates the need for large external storage capacitors and reduces dependency on external components, thereby lowering manufacturing costs while preserving voltage level stability through the self-contained voltage regulation capability.
3Device complexity
If the storage capacitor is disposed in the driving circuit, then the external capacitor is eliminated, but the area of the driving circuit is increased
Solution Approach 1:
The voltage boosting circuit is merged with the driving unit, creating an integrated unit that performs both functions. This merging eliminates the need for separate external storage capacitors and avoids the area penalty of placing large capacitors within the driving circuit, as the voltage regulation is achieved through the integrated unit's internal mechanisms rather than through separate capacitor components.
Data Source
AI summary
The present invention relates to an area-saving driving circuit for a display panel, which includes a plurality of digital-to-analog converting circuits convert input data, respectively, and produce a pixel signal. A plurality of driving units are coupled to the plurality of digital-to-analog converting circuits, respectively. They produce a driving signal according to the pixel signal and transmit the driving signal to the display panel for displaying. A plurality of voltage booster units are coupled to the plurality of driving units, respectively, and produce a supply voltage according to a control signal. Then the supply voltage is provided to the plurality of driving units. Thereby, by providing the supply voltage to the plurality of driving units of the display panel through the use of the plurality of voltage booster units, the area of the external storage capacitor is reduced or eliminated.