Semiconductor Device Transceiver Time-Division Integration
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Solution Overview
Problem
Existing semiconductor devices require separate integrated circuits for display driver and touch driver functions, leading to increased complexity and size due to the need for time-divisional operation between pixel and touch element driving.
Innovation Solution
Integration of a display driver IC and a touch driver IC into a single IC, allowing for time-divisional driving of pixels and touch elements using a transceiver with a first amplifier region that outputs data signals to pixels and receives detection signals from touch electrodes during different periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate integrated circuits are used for display driver and touch driver functions, then each function can be independently optimized, but the overall device complexity and size increase
Solution Approach 1:
The patent combines the display driver IC and touch driver IC into a single integrated circuit that performs both functions. The integrated circuit includes a transceiver that can operate in both display mode (outputting data signals to pixels) and touch mode (receiving detection signals from touch electrodes), eliminating the need for separate ICs while maintaining functional independence through time-divisional operation
Solution Approach 2:
The transceiver in the integrated circuit is designed with multi-functionality to serve dual purposes: as a display driver outputting data signals during a first period, and as a touch driver receiving detection signals during a second period. This universal component replaces what would traditionally require separate dedicated circuits for display and touch functions
2Manufacturing precision
If separate integrated circuits are used for display driver and touch driver functions, then signal processing can be specialized, but the semiconductor device size increases
Solution Approach 1:
By merging the display driver and touch driver into one integrated circuit, the patent reduces the total semiconductor device area. The integrated circuit shares common components such as the transceiver, amplifier region, and control logic between display and touch functions, eliminating the need for separate dedicated circuits that would occupy additional chip area
3Device complexity
If time-divisional operation is implemented for pixel and touch element driving, then a single IC can perform multiple functions, but the operation timing becomes more complex
Solution Approach 1:
The patent implements periodic time-divisional operation where the transceiver alternates between display mode and touch mode in successive time periods. The controller manages this periodic switching by generating appropriate control signals to switch the transceiver between outputting display data and receiving touch detection signals, creating a rhythmic alternation that simplifies the timing architecture
4Area of stationary object
If a single IC integrates both display and touch drivers, then device size is reduced, but the transceiver must handle multiple signal types
Solution Approach 1:
The transceiver is designed with dynamic reconfigurability to adapt its function based on the operational mode. During the first period, the transceiver is configured as a display driver outputting data signals. During the second period, it reconfigures as a touch driver receiving detection signals. This dynamic switching capability allows a single IC to handle multiple signal types without requiring separate static circuits for each function
Data Source
AI summary
A semiconductor device is disclosed. The semiconductor device includes a transceiver including an amplifier region configured to output a data signal to a source line connected to a pixel during a first period and receive a detection signal from a touch electrode during a second period different from the first period, and configured to generate the data signal based on input data; and a driving controller configured to generate the data based on input image data, outputting the data to the transceiver, and generate a touch signal based on the detection signal.