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Data driving circuit and display device thereof

A technology of data driving circuit and unit circuit, applied in static indicators, instruments, etc., to avoid long-term DC bias, no static power consumption, and fast circuit speed

Active Publication Date: 2013-12-04
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the data driving circuit design scheme developed based on single crystal silicon CMOS technology cannot be directly used in the data driving circuit design of oxide TFT

Method used

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  • Data driving circuit and display device thereof
  • Data driving circuit and display device thereof
  • Data driving circuit and display device thereof

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Embodiment Construction

[0026] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, the display device 10 includes a panel 11 , a gate driving circuit 12 , and a data driving circuit 13 . The panel 11 includes a two-dimensional pixel array composed of a plurality of two-dimensional pixel units 14, and a plurality of gate scanning lines in a first direction (such as a horizontal direction) and a plurality of gate scanning lines in a second direction (such as a vertical direction) connected to each pixel unit. data lines. The pixel unit 14 includes a pixel TFT, a liquid crystal capacitor C LC and storage capacitor C S . The gate driving circuit 12 outputs a gate scanning signal, and completes the progressive scanning of the pixel array through the gate scanning line; the data driving circuit 13 outputs a data signal, which is transmitted to the corresponding pixel unit through ...

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Abstract

The invention discloses a data driving circuit which is achieved by using an oxide film transistor and a display device thereof. The data driving circuit comprises a shift register, a sampling lath, a bootstrap latch and a digital-analog signal converter, wherein the shift register is used for receiving a shift synchronizing signal and generating a sampling signal; the sampling latch is used for receiving a serially input digital signal under the control of the data sampling signal generated by the shift register and converting the serially input digital signal into a parallel digital signal and storing the parallel digital signal; the bootstrap latch is used for converting the parallel digital signal into a digital signal corresponding to the serially input digital signal according to a bootstrap effect under the control of a latch enabling signal; and the digital-analog signal converter is used for receiving the digital single output by the bootstrap latch and converting the digital signal into an analog signal. According to the invention, an inverter is arranged in the latch circuit, and full amplitude can be met by high level and low level; and the quantity of devices in a unit circuit is less, the circuit is simple, and the area of layout is saved.

Description

technical field [0001] The invention relates to a display device, in particular to a data driving circuit and a display device using the circuit. Background technique [0002] TFT (Thin Film Transistor, thin film transistor) technology is the mainstream of flat panel display technology. The main markets of flat panel display technology include: mobile display (such as mobile phone, mobile DVD, PSP, etc.), notebook / monitor display, TV display, etc. In the design of these display devices, optimizing the display effect, reducing the cost of the display device, and reducing the power consumption of the display device are the most important goals. Fully integrated TFT panel design is an important technology to control cost and reduce power consumption, which has been paid close attention in recent years. The so-called fully integrated TFT panel design mainly refers to the design of integrating gate drive circuits, data drive circuits and other peripheral circuits on the base ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
Inventor 张盛东廖聪维陈韬刘晓明
Owner BOE TECH GRP CO LTD
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