Array Substrate Shift Register Space Reduction
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Solution Overview
Problem
Conventional liquid crystal display devices using GOA technology occupy significant space due to the arrangement of shift registers, limiting the ability to achieve a narrow-frame design and impacting user experience.
Innovation Solution
The proposed solution involves an array substrate with intersecting scanning and data lines, where each shift register inputs a scanning signal to a corresponding scanning line, and a switching unit connected to the other terminal, receiving a reference voltage and control signal, allowing the shift register and switching unit to simultaneously pull down the scanning line voltage to a low level, thereby reducing space occupied by shift registers and enabling a narrow frame design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple shift registers are disposed at both sides of the display region to provide scanning signals to multiple scanning lines, then the scanning function is improved, but the space occupied by the shift registers increases, preventing narrow-frame design
Solution Approach 1:
The patent extracts the switching unit from the shift register structure, separating the scanning signal generation function (shift register) from the scanning line control function (switching unit). This allows the shift register to be minimized to only one side of the display region while the switching unit handles the other terminal of each scanning line, thereby reducing the total space occupied by drive circuits and enabling narrow-frame design.
Solution Approach 2:
The patent segments the drive circuit into two functional parts: the shift register disposed at one side of the display region for generating scanning signals, and the switching unit disposed at the other side for controlling the scanning line terminals. This segmentation allows each component to be optimized independently and reduces the overall space requirement compared to having complete shift registers at both sides.
2Reliability
If four signal lines are required at two sides of the display region to transmit high frequency clock signals and control signals, then the signal transmission is ensured, but the space occupied by the shift registers increases
Solution Approach 1:
The patent extracts the signal transmission function from the shift register structure and assigns it to dedicated signal lines that extend across the display region. The switching unit receives control signals and clock signals through these dedicated lines, allowing the shift register to be minimized while maintaining reliable signal transmission to all scanning lines.
3Productivity
If the shift register and switching unit simultaneously pull down the voltage level of the scanning line to a low level, then the display efficiency is improved, but the circuit complexity increases
Solution Approach 1:
The patent merges the voltage control function into a coordinated operation between the shift register and switching unit. Both components work simultaneously to pull down the scanning line voltage to a low level, ensuring consistent timing and improving display efficiency. The coordination is achieved through shared control signals and clock signals, which synchronizes their operation without requiring complex additional control circuitry.
Data Source
AI summary
Array substrate, display panel and display device are provided. The array substrate includes multiple scanning lines, multiple data lines, multiple shift registers and multiple switching units. Each shift register is used for inputting a scanning signal to one terminal of a corresponding scanning line, the other terminal of each scanning line is connected with a first terminal of the switching unit, a second terminal of the switching unit receives a first reference voltage, a control terminal of the switching unit receives a first control signal. The shift register and the switching unit simultaneously pull down a voltage level of the scanning line to a low level. The present invention can realize a narrow frame, increase the user experience and ensure that the time that the voltage level of the scanning line pulled to the low level is the same.