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Driving circuit for smectic state LCD display

A liquid crystal display and drive circuit technology, applied to static indicators, instruments, etc., can solve the problems of high driving voltage and low voltage amplitude of plasma chips, and cannot meet the needs of driving smectic liquid crystals, so as to avoid electrochemical reactions , the effect of prolonging life

Inactive Publication Date: 2008-10-29
HALATION PHOTONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, STN screens and TN screens of TFT liquid crystals are driven by bipolar AC voltage signals, but the voltage amplitude is very low, between 3V and 5V, which cannot meet the driving needs of smectic liquid crystals
The driving voltage of the plasma chip is relatively high, and the peak value is generally greater than 60V, but the signal is in the form of unipolar pulse, not the bipolar pulse signal required to drive smectic liquid crystal.

Method used

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  • Driving circuit for smectic state LCD display
  • Driving circuit for smectic state LCD display
  • Driving circuit for smectic state LCD display

Examples

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1 to Figure 2 As shown, the driving circuit for displaying a smectic liquid crystal display in the present invention is used to control the display of a smectic liquid crystal display. The smectic liquid crystal display screen 1 includes a first base layer 11 and a second base layer 12, and the materials of the first base layer 11 and the second base layer 12 can be glass or plastic. Between the first matrix layer 11 and the second matrix layer 12, there is a mixed layer 13 formed by mixing smectic liquid crystals and additives, that is, by Figure 7 Smectic liquid crystal molecules 131 shown in are mixed with additive molecules 132 . The smectic liquid crystal is a class A smectic liquid crystal (Smectic-A) organic compound, such as a compound with a silicon group, tetracyanotetraoctylbiphenyl, decyl tetraacetate tetracyanobiphenyl, ...

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PUM

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Abstract

The invention discloses a drive circuit used for the display of a smectic LCD screen. The actuation circuit is used for controlling the display of the smectic LCD screen. The drive circuit comprises a control module, M R-wave generation modules and N D-wave generation modules. The control module is respectively connected with the R-wave generation modules and the D-wave generation modules which are connected with the smectic LCD screen. The drive circuit of the invention can generate a double-polarity high-voltage impulse which can be used for driving the array of liquid crystal to change, thud leading the display screen to display various images.

Description

technical field [0001] The invention relates to a driving circuit, in particular to a driving circuit for controlling the display of a smectic liquid crystal display. Background technique [0002] Smectic liquid crystals are viscous paste between minus 20 degrees and 60 degrees. If the alignment state is changed, it needs to be driven by positive and negative bipolar high-voltage signals. At present, STN screens and TN screens of TFT liquid crystals are driven by bipolar AC voltage signals, but the voltage amplitude is very low, between 3V and 5V, which cannot meet the driving needs of smectic liquid crystals. The driving voltage of the plasma chip is relatively high, and the peak value is generally greater than 60V, but the signal is in the form of unipolar pulse, not the bipolar pulse signal required to drive the smectic liquid crystal. It can be seen that due to the particularity of the display screen made of smectic liquid crystal material, its display drive requires a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133
Inventor 孙刚
Owner HALATION PHOTONICS CORP
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