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Display medium and display apparatus

A technology for display media and display devices, which is applied in optics, instruments, nonlinear optics, etc., and can solve the problems of inefficient energy consumption and reduced light transmittance.

Active Publication Date: 2016-08-03
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing PDLC needs to be powered on all the time when it is on, which is not energy-saving, and the light transmittance of the on-state decreases significantly with the increase of the viewing angle, which limits its application in the display field.

Method used

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  • Display medium and display apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The composition HJA002 in Table 2 was poured into the panel of a 15um display device by capillary action, and a voltage of 50Hz and 80V was applied to the first and second conductive layers of the panel. After the power was removed, the transmittance of the display device was 10.2%. ; Apply a voltage of 5KHz and 80V to the first and second conductive layers of the panel, and the transmittance of the display device is 89.6% after power off. When the viewing angle is 160°, the transmittance of the display device is still >85%. The viewing angle of the display device is >160°, and the transmittance of conventional PDLC in the open state is <80%, and due to birefringent anisotropy, the viewing angle of PDLC is small, generally <120°, so when PDLC is used in a display device It will affect the display effect.

[0074] Table II

[0075]

Embodiment 2

[0077] The composition HJA003 in Table 3 was poured into a 15um display device by capillary action, and a voltage of 50Hz and 80V was applied to the first and second conductive layers of the panel. After the power was removed, the transmittance of the display device was 7.4%. A voltage of 5KHz and 80V is applied to the first and second conductive layers, and the transmittance of the display device is 89.4% after power off.

[0078] Table three

[0079]

[0080]

Embodiment 3

[0082] The composition HJA004 in Table 4 was poured into a 15um display device by capillary action, and a voltage of 50Hz and 60V was applied to the first and second conductive layers of the panel. After the power was removed, the transmittance of the display device was 7.6%. A voltage of 5KHz and 60V is applied to the first and second conductive layers, and the transmittance of the display device is 89.6% after the power is removed.

[0083] Table four

[0084]

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PUM

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Abstract

The invention discloses a display medium and a display apparatus. The display medium comprises a liquid crystal composition composed of biphenyl cyanide smectic-phase liquid crystal, nematic-phase liquid crystal, and an additive. The smectic phase liquid crystal is shown as a general formula I and a general formula II, and the nematic phase liquid crystal is shown as a general formula III and a general formula IV. The invention also discloses the display apparatus of the display medium, which can realize characteristics of wide visual angle, high contrast, high transmittance and bistable energy saving of the display apparatus.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display medium and a display device. Background technique [0002] At present, the commonly used display medium for electronically controlled dimming devices is polymer dispersed liquid crystal (PDLC), and the display devices using this medium mainly work between the scattering state and the transparent state and have a certain gray scale. [0003] PDLC is mainly to mix low-molecular liquid crystal (liquid crystal, abbreviated as LC) with a polymer, and undergo a polymerization reaction under certain conditions to form micron-sized liquid crystal droplets that are evenly dispersed in the polymer network, and then use the intermediary of liquid crystal molecules to Materials with electro-optical response characteristics can be obtained through electrical anisotropy. Polymer dispersed liquid crystal film is a film material with excellent comprehensive performance obtained by com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/46G02F1/1333
Inventor 王盼盼韩文明
Owner JIANGSU HECHENG DISPLAY TECHCO