Liquid crystal display

A liquid crystal display device, liquid crystal technology, applied in static indicators, nonlinear optics, instruments, etc.

Inactive Publication Date: 2003-04-16
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in the next-generation cellular phone service, the transmission and reception of moving images will become possible

Method used

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  • Liquid crystal display
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Embodiment Construction

[0019] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Figure 1A is a partial sectional view showing the basic structure of a liquid crystal display device according to the present invention. Figure 1B is a graph showing the relationship between the voltage applied to the liquid crystal and the transmittance. The curve shown in the figure is just an example, and the voltage-transmittance characteristics and threshold voltage of liquid crystals vary depending on the type of liquid crystal material, the degree of anchoring of alignment on the surface, and the like. First, if Figure 1A As shown, the liquid crystal display device has a flat plate configuration formed of a pair of substrates 1 and 2 which are connected together at a predetermined interval and which support a liquid crystal 3 therebetween. One of the substrates 1 has pixel electrodes 4 arranged in a matrix and switching elements for driving these...

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Abstract

In a liquid-crystal display device, one of substrates has pixel electrodes and TFTs for driving the pixel electrodes, and the other substrate has opposing electrodes formed thereon. The orientation of the liquid crystal is controlled to exhibit bistability in which bistable states having different transmittances are maintained when no voltage is applied as a result of applying a voltage exceeding a threshold value, and to exhibit a continuous response characteristic in response to an applied voltage in a predetermined range which does not exceed the threshold value. The voltage applied to the liquid crystal can be selectively controlled between a voltage equal to or higher than the threshold value and a voltage lower than the threshold value, and a two-gradation display using the bistability and a multi-gradation display using the response characteristic are made.

Description

technical field [0001] The present invention relates to a liquid crystal display device. More particularly, the present invention relates to a driving method utilizing electro-optic response characteristics and liquid crystal bistability. Background technique [0002] Liquid crystal display devices have features such as light weight, thin structure, and low power consumption compared with display devices using CRTs, and are used as monitor displays for cellular phones and portable information terminals. Displays in portable phones and portable information terminals are particularly required to be light in weight and small in size and low in power consumption. Especially in standby (at reception waiting time), in portable phones having functions for displaying information such as characters and symbols, since low power consumption displays are very beneficial to battery life, it is important to develop low power consumption devices. [0003] Liquid crystal display devices a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/139G02F1/133G02F1/1337G02F1/136G09G3/20G09G3/36
CPCG09G3/2011G09G2300/0482G09G3/3651G02F1/1337
Inventor 境川亮
Owner SONY CORP
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