Liquid crystal element and liquid crystal display device
A liquid crystal element and liquid crystal layer technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as long time
Active Publication Date: 2014-03-12
STANLEY ELECTRIC CO LTD
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[0003] However, the liquid crystal display element of the above-mentioned conventional example still has room for improvement in that the alignment state of the liquid crystal molecules in the liquid crystal layer is changed from a state twisted in the second rotation direction to a state twisted in the first rotation direction. takes longer
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[0043] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0044] figure 1 It is a schematic diagram schematically showing the operation of an inverse TN type liquid crystal element. The reverse TN type liquid crystal element includes, as a basic structure, an upper substrate 1 and a lower substrate 2 arranged to face each other, and a liquid crystal layer 3 provided therebetween. The surfaces of the upper substrate 1 and the lower substrate 2 are subjected to orientation treatment such as rubbing treatment. The upper substrate 1 and the lower substrate 2 are arranged to face each other so that their alignment processing directions (indicated by arrows in the figure) intersect each other at an angle of about 90°. The liquid crystal layer 3 is formed by injecting a nematic liquid crystal material between the upper substrate 1 and the lower substrate 2 . The liquid crystal layer 3 adopts a liquid crystal material added with a ...
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Abstract
The present invention provides a liquid crystal element and a liquid crystal display device, wherein the time required in state conversion in the liquid crystal element which converts between two aligning states. The liquid crystal element comprises the components of: a first substrate, a second substrate, a liquid crystal layer which is arranged between the first substrate and the second substrate, an electrode which is used for applying a first electric field in a direction which is approximately vertical to the substrate surface and a second electric field in a direction that is approximately parallel with the substrate surface to the liquid crystal layer, and a driving circuit which supplies driving voltage to the electrode. Aligning processing direction of the first substrate and the second substrate are set to a first aligning direction for causing liquid crystal modules in the liquid crystal layer to generate torsion in the first direction. The liquid crystal layer comprises chiral material which generates the second aligning state characteristic, wherein in the second aligning state, the liquid crystal modules turn in a second direction which is opposite from the first direction. A second electric field is applied to the driving voltage which is supplied from the driving circuit after the first electric field is applied to the liquid crystal layer. The liquid crystal layer is converted from the first aligning state to the second aligning state through being applied by the first electric field and the second electric field.
Description
technical field [0001] The present invention relates to a technology for improving the photoelectric characteristics of liquid crystal elements and liquid crystal display devices. Background technique [0002] In Japanese Unexamined Patent Publication No. 2011-203547 (Patent Document 1), a novel liquid crystal display element (reverse TN type liquid crystal element) utilizing transition between two alignment states is disclosed. The liquid crystal display element of this conventional example has an alignment-treated first substrate, a second substrate, and a twist-aligned liquid crystal layer arranged between these substrates, and the liquid crystal layer contains a chiral material. In addition, when the liquid crystal layer does not contain a chiral material, when the rotational direction of the twisted liquid crystal molecules is set as the first rotational direction, the chiral material imparts to the liquid crystal molecules a rotation in a second rotational direction op...
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IPC IPC(8): G02F1/1337G02F1/139
CPCG02F1/1337G02F1/1343G02F1/1396
Inventor 加藤惠介都甲康夫
Owner STANLEY ELECTRIC CO LTD