Selective Scan Driver for Low-Power Consumption Using Oxide Thin Film Transistors

Abstract

In this letter, a scan driver circuit that can generate scan signals only in a selected area is proposed. It refreshes only the area that needs to be updated without refreshing the whole display. The proposed circuit with ten stages was fabricated using oxide thin film transistors. The additional area for selective driving occupies only 14.5 % of the unit stage area. This study confirms that the power consumption in the data lines and pixels for a dot pattern can be reduced by 25 % and 37.5 % when 50 % and 25 % of scan lines are selected, respectively.

Review of Integrated Gate Driver Circuits in Active Matrix Thin-Film Transistor Display Panels

“…On the other hand, there exist cases to have moving image regions and still image regions at the same time in a screen. Thus, some adaptive scanning region control methods have been proposed with selective scanning shift registers to enable different refresh rates in different regions [135][136][137]. These circuits can block or enable the gate pulse generation at specific regions of specific frames, leading to the different refresh rates over some regions of a display.…”

“…Figure24. Selective scan driver circuit to enable the gate pulse generation only for the specific region [135]. …”

Energy-efficient electronics with an air-friction-driven rotating gate transistor using tribotronics

“… 14 Moreover, Jo et al. 15 introduced a selective scan driver and presented a circuit configuration aimed at conserving power that would otherwise be wasted. In addition to these studies, research with a distinct emphasis on low-power-consumption FETs has recently increased.…”

Realization of Dynamic Local Refresh on Liquid Crystal Display with Novel Partial Scan Gate Driver on Array

“…[5][6][7][8] However, traditional line-by-line scan design of display panel lack the flexibility to adjust refresh area based on the display content, making it difficult to optimize power usage. [9][10][11][12] To address this challenge, this paper introduced a dynamic local refresh technology, which incorporates a novel Gate Driver on Array (GOA) structure, timing controller (TCON) design and timing sequences (IP). This technology breaks the limitations of traditional lineby-line scan manner of GOA, allowing for variable refresh rates across different regions on the display panel.…”

“…To reduce display panel power consumption, efforts have been made on the driving circuits to eliminate unnecessary data transmission and panel refresh based on display contents 5–8 . However, traditional line‐by‐line scan design of display panel lack the flexibility to adjust refresh area based on the display content, making it difficult to optimize power usage 9–12 …”