Scanning driving circuit and flat display device having the same
A scanning driving circuit and scanning driving technology, which are applied to static indicators, instruments, etc., can solve the problems of occupying space, unfavorable narrow frame design of flat display devices, complicated circuit design, etc., saving space, facilitating narrow frame design, simplifying The effect of the circuit
Active Publication Date: 2019-08-02
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the existing flat display device, each scanning driving unit only drives one scanning line, and each scanning driving unit needs to be provided with a clock signal selection circuit to select different clock signals. Generally, a plurality of scanning lines are arranged in a flat display device. Many scan driving units will need to be designed, which will inevitably make the circuit design complex and occupy space, which is not conducive to the narrow frame design of the flat panel display device
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0037] see figure 1 , in the prior art, there are several scanning lines arranged in the flat panel display device, and corresponding scanning driving units need to be set corresponding to these scanning lines, while each existing scanning driving unit only drives one scanning line, and each scanning driving unit It includes forward and reverse scanning circuit 10, input circuit 20, pull-down circuit 30, control circuit 40 and output circuit 50, and each scan driving unit needs to set four clock signals, which will make the circuit design in the flat panel display device complicated. read on figure 2 , figure 2It is a timing diagram of the forward scanning operation of the scanning drive unit in the prior art. Wherein, when the first scanning control voltage U2D is at a high level and the second scanning control voltage D2U is at a low level, the transistors T1 and T3 are turned on, and the scanning driving circuit is in a forward scanning state. When the high level of the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a scanning driving circuit and a flat panel display device. The scanning driving circuit comprises a plurality of cascaded scanning driving units. Each scanning driving unit includes a forward and reverse scanning circuit, an input circuit, a pull-down circuit, a control circuit, an output circuit. and the forward and reverse scanning circuit is used for receiving first and second scanning control voltages, a driving signal, and a lower-stage scanning driving signal, and outputting forward and reverse control signals to control forward or reverse scanning. The input circuit is used for receiving a first clock signal and forward and reverse control signals, and outputting an input signal. The pull-down circuit is used for receiving the input signal and the first clock signal, outputting a pull-down signal, and pulling down or charging a pull-down control signal point. The control circuit is used for receiving the input signal and charging a pull-up control signal point, or receiving the pull-down signal and pulling down the pull-up control signal point. An output circuit is used for receiving a second clock signal and generating a scanning driving signal to be output to a scanning line to drive a pixel unit. Therefore, a circuit of the flat panel display device is simplified, and space is saved, and further, a narrow-edge frame design for the flat panel display device is facilitated.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a scan driving circuit and a flat display device with the circuit. Background technique [0002] Scanning driving circuits are used in current flat-panel display devices, that is, the scanning driving circuits are manufactured on the array substrate by using the existing thin-film transistor flat-panel display array manufacturing process, so as to realize the driving mode of progressive scanning. In the existing flat display device, each scanning driving unit only drives one scanning line, and each scanning driving unit needs to be provided with a clock signal selection circuit to select different clock signals. Generally, a plurality of scanning lines are arranged in a flat display device. Many scan driving units will need to be designed, which will inevitably make the circuit design complex and occupy space, which is not conducive to the narrow frame design of the flat panel d...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/36G09G3/3266
CPCG09G3/20G09G3/3266G09G3/3677
Inventor 赵莽
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD