TFT panel control circuit

Abstract

The invention discloses a TFT panel control circuit. The circuit comprises thin film transistors T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11 and T12. A source electrode of the T1 is connected with afront signal source FW. A grid electrode is connected with a front secondary driving signal Gn-2. A drain electrode is connected with a grid electrode of the T2, a grid electrode of the T4, a drain electrode of the T7, a source electrode of the T7 is connected with a rear signal source BW. A grid electrode of the T7 is connected with a rear secondary driving signal Gn + 2. The source electrode ofthe T4 is connected with a clock signal CK. The drain electrode of the T4 is connected with the grid electrode of the T4 through a first capacitor. The drain electrode of the T4 is further connected with the source electrode of the current-stage driving signal Gn, the source electrode of the T5, the source electrode of the T6 and the source electrode of the T10. A potential pull-down structure composed of three TFTs and a logic circuit with two TFTs replacing capacitors in a 7T2C GIP circuit are introduced to form a GIP circuit of a 12T1C structure. The voltage residues and electric leakage ofa Q point, a P point and Gn are avoided, and flicker and ghost phenomena of panel display are effectively eliminated.

Description

technical field [0001] The invention relates to display panel manufacturing technology, in particular to a panel control circuit integrating a GIP driving circuit. Background technique [0002] In recent years, with the rapid development and application of information technology, wireless mobile communication and information home appliances, people's dependence on electronic products is increasing day by day, which brings about the vigorous development of various display technologies and display devices. The flat panel display device has the characteristics of complete planarization, lightness, thinness, power saving, etc., and thus has been widely used. [0003] At present, in order to reduce the manufacturing cost of flat-panel display devices and achieve narrow borders, GIP (Gate in Panel) technology is usually used in the manufacturing process to directly integrate gate drive circuits (ie, GIP circuits) into flat-panel display devices. On the panel, the gate drive circu...

AI Technical Summary

Problems solved by technology

[0006] However, some existing GIP circuit drive units adopt the 7T2C circuit structure, which not only cannot support the forward and reverse scan function, but limits the scope of use of the panel, but also cannot be switched when the high level is converted to low level during the working process of the drive unit. Completely pull down, the GIP circuit generates a large amount of leakage current during the process of display screen conversion, resulting in afterimages and other phenomena

[0007] Based on this, how to solve the problem that the existing GIP circuit cannot be completely pulled down when the high level is converted to a low level during the output process of the existing GIP circuit, the leakage current in the display process is too large, and the occupied area of ​​the GIP can be reduced has become a problem for those skilled in the art. A technical problem to be solved

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