Gate Driver Delay Circuit for Touch Display Timing Control
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Solution Overview
Problem
Touch display panels in prior art cannot satisfy the time requirements for touch-control driving due to shortened blank periods between display phases, leading to inadequate touch-control functionality.
Innovation Solution
A driving circuit with gate drivers and delay units, where each delay unit outputs a starting signal to enable the subsequent gate driver after a predetermined time, allowing for a touch-control time period to be formed between the output of a driving signal by the previous gate driver and the enabling of the subsequent gate driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the blank time period between display phases is shortened to improve resolution, then display resolution is improved, but the touch-control phase cannot complete its required operations
Solution Approach 1:
The invention segments the gate driver operations into distinct phases by introducing delay units between adjacent gate drivers. Each gate driver operates independently with controlled timing, allowing the touch-control phase to be separated from the display phase. This segmentation enables the touch-control operations to complete within the available time while maintaining high display resolution.
Solution Approach 2:
The delay units are configured to output starting signals to subsequent gate drivers after a predetermined time delay. This preliminary timing arrangement ensures that touch-control driving is completed before the next display phase begins, allowing adequate touch-control time without extending the overall frame period or reducing display resolution.
2Reliability
If the blank time period is extended to allow complete touch-control driving, then touch-control functionality is improved, but display resolution deteriorates
Solution Approach 1:
The invention introduces dynamic timing control through delay units that can be adjusted to provide the exact predetermined time delay needed for touch-control operations. This dynamic timing arrangement allows the system to maintain high display resolution while ensuring adequate time for touch-control driving by precisely controlling when subsequent gate drivers are enabled.
Solution Approach 2:
The delay units change the timing parameter of gate driver activation by introducing a predetermined time delay. This parameter change allows the touch-control phase to complete its operations reliably without extending the overall blank period, thereby maintaining high display resolution while ensuring touch-control functionality.
3Duration of action of moving object
If delay units are added between gate drivers to create touch-control time period, then touch-control driving time is increased, but device complexity increases
Solution Approach 1:
The delay units serve as intermediary components between adjacent gate drivers, introducing the necessary time delay without requiring major system redesign. Each delay unit is a relatively simple circuit element that mediates the timing between gate drivers, enabling touch-control operations while adding minimal complexity to the overall system.
Solution Approach 2:
The delay units can be implemented as standardized, reusable circuit modules that are copied between adjacent gate driver pairs. This modular approach allows the timing control function to be added systematically without proportionally increasing overall system complexity, as each delay unit is an identical, pre-designed component.
Data Source
AI summary
Provided are a driving circuit and a driving method thereof, a touch display panel, and a touch display device. The first input terminal of the delay unit is connected to corresponding previous gate driver, the first output terminal of the delay unit is connected to corresponding subsequent gate driver. The delay unit outputs a starting signal to the subsequent gate driver for enabling it after a predetermined time elapses since the previous gate driver outputs a driving signal. The delay unit achieves shift registering between the previous gate driver and the subsequent gate driver, to form a touch-control time period after the previous gate driver outputs a driving signal and before the subsequent gate driver is enabled, so as to ensure that the touch display panel can also achieve a touch-control function with high precision on the premise of achieving a display function of high resolution.