Display Drive IC Terminal Mode Selection
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Solution Overview
Problem
Existing display drive circuits cannot independently select dot matrix or segment displays for each output terminal, limiting their ability to accommodate various display panel designs.
Innovation Solution
An integrated circuit device with a drive circuit that outputs distinct waveform signals for dot matrix and segment displays, and a control circuit that independently sets output terminals for either display mode, allowing for flexible design configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single selection signal is used to switch between dot matrix display and segment display for all output terminals, then the circuit control is simplified, but the adaptability to various display panel designs is reduced
Solution Approach 1:
The patent divides the output terminals into multiple groups (first output terminal group and second output terminal group) and provides independent selection signals for each group. This segmentation allows different terminals to be independently configured for dot matrix or segment display, resolving the contradiction between simplified control and design adaptability.
Solution Approach 2:
The patent adds a new dimension of control by introducing group-based selection signals that operate independently for different terminal groups. This multi-dimensional control approach enables both simplified group-level control and flexible individual terminal configuration, simultaneously achieving circuit simplicity and design versatility.
2Reliability
If separate voltage supply circuits are provided for dot matrix display and segment display, then the reliability of each display mode is improved, but the device complexity increases
Solution Approach 1:
The patent designs a single voltage supply circuit that can serve both dot matrix display and segment display modes through multiplexing. The voltage supply circuit is configured to provide appropriate voltages to different terminal groups based on the selected display mode, achieving both reliability and circuit simplicity through universal design.
Solution Approach 2:
The patent merges the voltage supply functions for dot matrix and segment displays into a single shared circuit. By combining these functions and using selection signals to route power appropriately, the patent reduces overall circuit complexity while maintaining reliable operation for both display modes.
Data Source
AI summary
An integrated circuit device includes a drive circuit that outputs a first drive waveform signal for dot matrix display and a second drive waveform signal for segment display, a first output terminal, a second output terminal, and a control circuit that controls the drive circuit. The drive circuit outputs the first drive waveform signal to the first output terminal when its terminal is set as the output terminal for dot matrix display, and outputs the second drive waveform signal to the first output terminal when its terminal is set as the output terminal for segment display. The drive circuit outputs the first drive waveform signal to the second output terminal when its terminal is set as the output terminal for dot matrix display, and outputs the second drive waveform signal to the second output terminal when its terminal is set as the output terminal for segment display.