LIQUID CRYSTAL DISPLAY DEVICE AND EQUIPMENT MOUNTED WITH LIQUID CRYSTAL DISPLAY DEVICE

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United States of America Patent

SERIAL NO

15053720

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Abstract

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A driving method of a liquid crystal display element, the method includes preparing the liquid crystal display element which comprises (i) first and second substrates placed opposite each other, wherein on a pair of opposing surfaces of the first and second substrates, a pair of opposing electrodes constituting a display area are provided and a pair of vertically oriented films are provided at least one of which has been provided with an orientation treatment aimed at introducing a pretilt in a liquid crystal layer, (ii) the liquid crystal layer sandwiched between the first and second substrates that contains liquid crystal material with negative dielectric anisotropy and is vertically oriented with slight tilting, (iii) a layer disposed at least between one of the pair of vertically oriented films and the liquid crystal layer, and designed to reinforce vertical orientation control over liquid crystal molecules of the liquid crystal layer, and (iv) first and second polarizing plates that are placed, in a crossed Nicol arrangement, on surfaces of the first and second substrates located on opposite sides to the liquid crystal layer and that have absorption axes each at a 45° angle to an orientation direction of the liquid crystal molecules located in a mid-thickness region of the liquid crystal layer, wherein a pretilt angle in the liquid crystal layer of the liquid crystal display element is 87° or more and 89.52° or less, and putting the display area on alternating bright/dark display at a frequency of 0.5 Hz to 5 Hz under a condition that the liquid crystal display element is subjected to 2 Hz to 30 Hz vibrations or 0.5 Hz to 3 Hz external forces.

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Patent Owner(s)

Patent OwnerAddress
STANLEY ELECTRIC CO LTD2-9-13 NAKAMEGURO MEGURO-KU TOKYO 153-8636

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
IWAMOTO, Yoshihisa Yokohama-shi, JP 62 326

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