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Reflective ferroelectric liquid crystal display and its driving method

A ferroelectric liquid crystal and display technology, applied to static indicators, instruments, electrical components, etc., can solve problems such as residue and easy degradation of liquid crystal

Inactive Publication Date: 2003-04-16
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional half-V type liquid crystal display, as mentioned above, in the case of AC driving to maintain the stability of the liquid crystal, there is a disadvantage that only a maximum average transmittance of 50% can be obtained during the display cycle.
[0018] To limit light loss, if an asymmetrical DC voltage is applied, ions in the liquid crystal accumulate on the surface, causing afterimages
Moreover, there is a problem that the liquid crystal is easy to degrade

Method used

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  • Reflective ferroelectric liquid crystal display and its driving method
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  • Reflective ferroelectric liquid crystal display and its driving method

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Embodiment Construction

[0038] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0039] Figure 7 is a schematic diagram of a reflective ferroelectric liquid crystal display according to the present invention.

[0040] refer to Figure 7 , a reflective FLCD (Ferroelectric Liquid Crystal Display) is equipped with a compensation sheet 10 and a display panel 30 located between a polarizing beam splitter (PBS) 60 and a mirror 50 .

[0041] The PBS 60 reflects the light beam of the first polarized part, and transmits the light beam of the second polarized part. exist Figure 7 , the PBS 60 reflects S-polarized light and transmits P-polarized light.

[0042] Such as Figure 8 As shown, the compensation sheet 10 includes a lower substrate 11, a lower electrode layer 12, a lower alignment film 13, a liquid crystal layer 14, an upper alignment film 15, an upper electrode layer 16, an upper substrate 17, a sealing member 18, and a spacer 1...

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Abstract

The present invention discloses a reflective type ferroelectric liquid crystal display and a driving method thereof. The reflective type ferroelectric liquid crystal display comprises a display panel which is disposed between a polarization beam splitter and a mirror to satisfy a quarter plate condition, and in which a liquid crystal layer formed between electrode layers is filled with half-V type ferroelectric liquid crystal having a bookshelf structure, the electrode layers being disposed between substrates to be orthogonal and opposite to each other; and a compensation panel which is disposed between the display panel and the polarization beam splitter to satisfy a half plate condition, and in which a liquid crystal layer formed between electrode layers is filled with half-V type ferroelectric liquid crystal having a bookshelf structure, the electrode layers being disposed between substrates to be opposite to each other. Therefore, the light loss can be reduced, and thus the gray scale display can be improved.

Description

technical field [0001] The invention relates to a reflective ferroelectric liquid crystal display and a driving method thereof, in particular to a reflective ferroelectric liquid crystal display and a driving method thereof which can improve the transmittance and brightness. This application is based on Korean Patent Application No. 2001-62461 filed on October 10, 2001, which is hereby incorporated by reference. Background technique [0002] Liquid crystal displays are flat type displays widely used in portable devices. Due to the rapid development of scale-up technology, liquid crystal displays are rapidly replacing conventional CRT (cathode ray tube) displays. [0003] There are various types of liquid crystal materials applicable to liquid crystal displays. [0004] TN (twisted nematic) liquid crystals, which are generally used as liquid crystal materials, utilize the interaction between the medium anisotropy of liquid crystal molecules and the electric field, resulting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G02F1/1335G02F1/13363G02F1/1337G02F1/1347G02F1/141
CPCG02F2001/13355G02F2203/02G02F1/141G02F2001/133638G02F1/13355G02F1/133638G02F1/133
Inventor 王种敏
Owner SAMSUNG ELECTRONICS CO LTD
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