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Thin film transistor (TFT) liquid crystal display (LCD) and drive method thereof

A technology of a liquid crystal display and a driving method, which is applied to static indicators, instruments, etc., can solve the problem of insufficient energy saving of the driving method.

Active Publication Date: 2011-06-01
SHENZHEN FOCALTECH SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0036] The purpose of the embodiment of the present invention is to provide a driving method for a TFT liquid crystal display, aiming at solving the problem that the existing driving method is not energy-saving enough

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  • Thin film transistor (TFT) liquid crystal display (LCD) and drive method thereof
  • Thin film transistor (TFT) liquid crystal display (LCD) and drive method thereof
  • Thin film transistor (TFT) liquid crystal display (LCD) and drive method thereof

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Embodiment Construction

[0056] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0057] Figure 8 The driving method of the TFT liquid crystal display provided by the embodiment of the present invention is shown. The waveforms of the common electrode voltage VCOM and the source driving voltage VS change in the same cycle, and the driving time period t1→te1→te2→t2→te3→te4 is one Scan period (set period as T). The common electrode VCOM is driven to the low common electrode level vcoml in the t1 period, is driven to the ground potential gnd in the te1 period, is driven to the system input power potential vci in the te2 period, and is driven to the high common electrode in t...

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Abstract

The invention is applied to the field of liquid crystal display, and provides a thin film transistor (TFT) liquid crystal display (LCD) and a drive method thereof. In the method provided by the embodiment of the invention, a common electrode driving end VCOM and a source driving end VS are switched on a ground potential gnd simultaneously, so that electric charges stored by a load capacitor on a display are dissipated; an external input source virtual channel identifier (VCI) for the source driving end VS is directly driven to approach to target gray scale potential (vsn or vsp); and the source driving end is driven to the target gray scale potential by an output buffer (op). Compared with existing driving methods, the method provided by the invention can be used to reduce the power consumption of the TFTLCD.

Description

Technical field [0001] The invention belongs to the field of liquid crystal display, and particularly relates to a driving method of a TFT liquid crystal display screen and a TFT liquid crystal display screen. Background technique [0002] See figure 1 , For the existing LCD Panel 120 that uses Thin Film Transistor (TFT) 103 as the switching element and its external driving device: Gate Driver 200, Source Driver 300, common electrode driver (Vcom Driver) 400. The existing liquid crystal display panel 120 is composed of an upper substrate 100, a lower substrate 110, and a liquid crystal layer (not shown) between the two substrates. There are thin film transistors 103 on the upper substrate, and multiple data transmission lines VS connecting the sources of the thin film transistors 103 1 ~ VS N ,Multiple scan lines VG connected to the gate of the thin film transistor 103 1 ~ VG M , The pixel electrode 102 connected to the drain of the thin film transistor 103. Placed on the l...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 刘军桥戴贵荣
Owner SHENZHEN FOCALTECH SYST