Device for reducing driving voltage of blue phase liquid crystal display

A display driver and blue-phase liquid crystal technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems that are difficult to realize and have very high material requirements, and achieve the effect of reducing the driving voltage, saving energy, and increasing the lateral effective electric field

Inactive Publication Date: 2010-07-21
SHANGHAI JIAO TONG UNIV
View PDF0 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this technique uses a Cole constant of 1.03nmV -2 The blue phase liquid crystal material, the thickness of the liquid crystal cell is 10 μ m, adjust the electrode width and the electrode spacing, the driving voltage of the blue phase liquid crystal display is all above 100 volts, when the Cole constant of the blue phase liquid crystal material is increased by 100 times (10 -7 quantity), the driving voltage can only be reduced to 15 volts, so this technology has very high requirements on materials, and it is difficult to realize

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for reducing driving voltage of blue phase liquid crystal display
  • Device for reducing driving voltage of blue phase liquid crystal display
  • Device for reducing driving voltage of blue phase liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, this embodiment includes: an upper polarizer 1, an upper substrate 2, a protective film 3, a color filter film 4, a blue phase liquid crystal (BPLC), N Pixel electrodes 5, N Common electrodes 6, and 2N protrusions 7 , insulating layer 8, lower substrate 9 and lower polarizer 10, wherein: the lower surface of upper polarizer 1 is connected with the upper surface of upper substrate 2, the lower surface of upper substrate 2 is connected with the upper surface of protective film 3, protective film 3 The lower surface of the protrusion 7 is connected to the upper surface of the color filter film 4, one surface of the protrusion 7 is connected to the upper surface of the insulating layer 8, and the rest of the protrusion 7 is located in the Pixel electrode 5 or the Common electrode 6, and the Pixel electrode 5 and the Common electrode 6 Arranged alternately at equal intervals, and the distance between the Pixel electrodes 5 and the Common electrodes...

Embodiment 2

[0031] Such as image 3 As shown, this embodiment includes: an upper polarizer 1, an upper substrate 2, a protective film 3, a color filter film 4, a blue phase liquid crystal, N Pixel electrodes 5, N Common electrodes 6, 2N protrusions 7, an insulating layer 8. The lower substrate 9 and the lower polarizer 10, wherein: the lower surface of the upper polarizer 1 is connected to the upper surface of the upper substrate 2, the lower surface of the upper substrate 2 is connected to the upper surface of the protective film 3, and the lower surface of the protective film 3 Connected to the upper surface of the color filter film 4, one surface of the N protrusions 7 is connected to the lower surface of the color filter film 4, one surface of the N protrusions 7 is connected to the upper surface of the insulating layer 8, and connected to the color filter film 4 The remaining part of the protrusion 7 is located in the Common electrode 6, and the remaining part of the protrusion 7 con...

Embodiment 3

[0036] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the cross section of the protrusion 7 is trapezoidal, the base angle of the trapezoid is 75°, the long base is 3.8 μm, and the height is 3.9 μm.

[0037] Such as Figure 6 As shown, in this embodiment, the driving voltage is lowered to 21V. Although the effect of lowering the voltage is not as good as that of Embodiment 1, the transmittance of light is relatively increased by 2%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a device for reducing a driving voltage of a blue phase liquid crystal display, and belongs to the technical field of liquid crystal displays. The device comprises an upper polaroid, an upper substrate, a protecting film, a color filter film, a blue phase liquid crystal, N Pixel electrodes, N Common electrodes, 2N bulges, an insulating layer, a lower substrate and a lower polaroid, wherein one surface of each bulge is connected with the lower surface of the color filter film or the upper surface of the insulating layer, and the rest part of each bulge is positioned in the Pixel electrodes or the Common electrodes; and the Pixel electrodes and the Common electrodes are alternately distributed at intervals, or the Pixel electrodes and the Pixel electrodes are distributed at intervals, or the Common electrodes and the Common electrodes are distributed at intervals. By introducing the bulge structure, the device effectively increases the transverse effective electric field in the region of the blue phase liquid crystal so as to greatly reduce the driving voltage of the blue phase liquid crystal display. Because the longitudinal sections of the electrodes have gradients, the device improves the light transmission rate, can utilize the conventional production equipment and conditions of the enterprise, saves energy and promotes the research and development and the mass production of the next generation liquid crystal display.

Description

technical field [0001] The invention relates to a device in the technical field of liquid crystal display, in particular to a device for reducing the driving voltage of a blue-phase liquid crystal (BPLC) display. Background technique [0002] The blue phase is a liquid crystal phase that appears in a narrow temperature range between the chiral nematic phase and the isotropic phase. Blue-phase liquid crystal displays have the greatest potential to become the next generation of displays. Because the blue-phase liquid crystal has the following revolutionary characteristics: (1) The theoretical response speed of the blue-phase liquid crystal display can reach below the ms level, which fundamentally solves the problem of the response speed of the double-speed, quadruple-speed liquid crystal display, and even the eight-fold speed liquid crystal display. All will become possible; (2) macroscopically, the blue phase liquid crystal is isotropic, and the blue phase liquid crystal dis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1343
Inventor 陆建钢朱吉亮苏翼凯
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap