WO2015131552A1 - Substrate for liquid crystal lens and preparation method therefor, liquid crystal lens and stereoscopic display device - Google Patents

Substrate for liquid crystal lens and preparation method therefor, liquid crystal lens and stereoscopic display device Download PDF

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Publication number
WO2015131552A1
WO2015131552A1 PCT/CN2014/091388 CN2014091388W WO2015131552A1 WO 2015131552 A1 WO2015131552 A1 WO 2015131552A1 CN 2014091388 W CN2014091388 W CN 2014091388W WO 2015131552 A1 WO2015131552 A1 WO 2015131552A1
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Prior art keywords
substrate
liquid crystal
crystal lens
transparent conductive
conductive ink
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PCT/CN2014/091388
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French (fr)
Chinese (zh)
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吴坤
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京东方科技集团股份有限公司
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/22Other optical systems; Other optical apparatus for producing stereoscopic or other three dimensional effects
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/134309Electrodes characterised by their geometrical arrangement
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00Function characteristic
    • G02F2203/28Function characteristic focussing or defocussing

Abstract

A substrate (110) for a liquid crystal lens and a preparation method therefor, a liquid crystal lens (100) and a stereoscopic display device. The liquid crystal lens comprises strip electrodes (1121) of which the cross section is in the shape of a closed arc, wherein the light transmittance difference between the strip electrodes (1121) and surrounding spacing regions is slowly changed, the brightness of transmitted light rays will not be obviously changed, and a plurality of alternately dark and bright stripes which are spaced apart will not appear, thereby reducing the probability of generating Moire patterns.

Description

A method for preparing a substrate and a liquid crystal lens, a liquid crystal lens, a stereoscopic display apparatus FIELD

The present invention belongs to the field of display technology, and particularly relates to a method for preparing a substrate, the liquid crystal lens, a liquid crystal lens and a stereoscopic display apparatus.

Background technique

With the rapid development of stereoscopic display technology, the demand for stereoscopic display device is also increasing. In many technologies to realize three-dimensional stereoscopic display which, due to the autostereoscopic display without the viewer to wear special glasses advantages such that it has become widely accepted in the art in a three-dimensional display.

1, the basic principle of a naked eye three-dimensional display are: a display panel 20 is divided into left and right (L, R) display area, approximately (L, R) image display area as seen two are shown, around the display area by a plurality of alternately arranged strip-like regions of composition; and a front panel provided with a lens 21, a lens 21 may be a sub-pixel (FIG. 1 by a, b, c, d) emitted in different display areas of the display concentration of light refracted in different spatial regions, so as to make the left and right eyes see images at different display areas, respectively, to the effect of three-dimensional display. Reproducing three-dimensional image of the lens may be a liquid crystal lens comprises a liquid crystal layer, and which is driven by an electric field.

2 A schematic structure of the prior art liquid crystal lens, a liquid crystal lens 100 includes a first substrate 110, a second substrate 120, and a liquid crystal layer 130; wherein the liquid crystal layer 130 provided on the first substrate 110 and the second between the substrate 120. The first substrate 110 includes a first substrate 111, and a first electrode layer 111 disposed on the first substrate 112 and a first alignment film 113, a second substrate 120 includes a second substrate 121, and are sequentially provided in the second the second electrode layer 122 and the second alignment film 123 on the substrate 121.

Wherein, the first substrate 110 and second substrate 120 spaced opposite the first electrode layer 112 disposed on the first substrate 111 of the first substrate 110, the film 113 is covered with a first, a second electrode layer 122 is provided in the first on the second substrate 121 of the second substrate 120, covered by the second alignment film 123. The first electrode layer 112 and the second electrode layer 122 for generating an electric field, liquid crystal molecules rotate the driving so that the light is refracted toward the desired position.

Wherein the first electrode layer 112 comprises a plurality of spaced strip electrodes 1121 provided, the cross-section of each strip-shaped electrode 1121 is rectangular, and have the same thickness.

In the structure of the liquid crystal lens 100, when light is incident on the liquid crystal display panel 20 via a lens 100, due to the presence of strip-shaped electrode 1121 and the surrounding space area of ​​the liquid crystal lens 100 of different light transmittance, and a surrounding edge strip electrode 1121 significant difference in transmittance shear gap region, it is different in the light intensity, i.e., showed significant changes in brightness, the overall performance of the light and dark fringe spacing pieces (corresponding to the liquid crystal lens 100 is a grating) , which are spaced stripes and black matrix display panel (corresponding to the other grating) 20 interfere with each other, thereby easily produce moire, affecting the results of the naked eye three-dimensional display.

3 and 4, the cross section of the prior art strip-shaped electrode 1121 is employed a generally trapezoidal or stepped contour 4, although in terms of avoiding moire fringes having a rectangular cross-section with respect to the electrodes have a certain improved but still flawed's easy to produce moire. At the same time, making the above-described stepped or trapezoidal shape strip electrodes 1121 typically requires multiple photolithography, due to process complexity, the longer the process is costly, is not conducive to promote autostereoscopic display technology.

SUMMARY

Object of the present invention is a liquid crystal lens solution prior art due to the cut strip electrode and the significant difference in transmittance becomes spaced area around the pixel of the display panel is easy to cause a black matrix by the superposition moire problems provided a moire generation can be reduced and a substrate preparation process, the liquid crystal lens, a liquid crystal lens and a stereoscopic display apparatus.

Solution to Problem The solutions of the present invention is a substrate for a liquid crystal lens, comprising a first substrate and provided on said first substrate first electrode layer and a first alignment film, a first electrode layer strip electrodes comprising a plurality of spaced, cross section perpendicular to the extending direction of each of the arcuate strip-shaped electrodes is closed; said closure comprising a curved away from said arcuate portion and adjacent to said first substrate a straight portion of the first substrate.

Preferably, the closed arc height

Figure PCTCN2014091388-appb-000001

Further preferably, the height of the closed arc

Figure PCTCN2014091388-appb-000002

Preferably, the width of the arcuate closed 5-20μm.

Preferably, the strip-shaped electrode is a transparent conductive inks were prepared.

Preferably, the distance between adjacent strip electrodes is 10-20μm.

Preferably, the water-soluble silver transparent conductive ink.

Preferably, the transparent conductive ink is poly 3,4-ethylene dioxythiophene / polystyrene sulfonate.

Another object of the present invention further comprises providing a substrate for the above-described method for preparing the liquid crystal lens, comprising the steps of:

The transparent conductive ink on a first substrate, a wire mesh screen having a mesh pattern stripe by a screen printing screen; and

After diffusion of the transparent conductive ink, the transparent conductive ink by drying, to obtain a closed cross section arcuate strip electrodes.

Preferably, the transparent conductive ink viscosity 3-20p, the width of the strip-shaped mesh of 5 to 20 m, wherein the transparent conductive ink diffusion time 1-15min, a transparent conductive ink drying temperature of 50-80 ℃, drying time was 2-8min, the height of the strip-shaped electrode is

Figure PCTCN2014091388-appb-000003

Another object of the present invention further comprises providing a liquid crystal lens, comprising: first and second substrates spaced apart, and a liquid crystal layer located between the first substrate and the second substrate;

Wherein the first substrate above the first substrate;

The second substrate comprises a second substrate and a second electrode layer provided on the second substrate and a second alignment film is formed on the second electrode layer, wherein the first layer and the second electrode second electrode layer for generating an electric field.

Another object of the present invention further comprises providing a stereoscopic display device comprising a display panel and a liquid crystal display disposed on the outer lens surface of the panel, a liquid crystal lens using the above liquid crystal lens.

The method of preparing the substrate and the liquid crystal lens of the present invention, a liquid crystal lens, a stereoscopic display apparatus has the following advantages: a closed cross section and the arcuate strip electrode space area surrounding transmittance difference into a slowly varying, the brightness of light impermeable changes significantly, the light and dark fringe spacing pieces will not reduce the probability of occurrence of moire patterns; Meanwhile, a transparent conductive ink fluidity, the transparent conductive ink spread to both sides, and cured to form a closed arc sectional shape stripe-shaped electrodes, the simple production method, simplifying the process, reducing production costs.

BRIEF DESCRIPTION

1 is a schematic prior art naked eye three-dimensional display.

FIG 2 is a schematic structural diagram of the prior art liquid crystal lens.

FIG 3 is a schematic structural diagram of the prior art has a trapezoidal cross-section of the noodle-shaped electrode.

FIG 4 is a schematic structural diagram of a step-shaped cross section with unequal height noodle-shaped electrode having a prior art.

FIG 5 is a schematic structure of the liquid crystal of the liquid crystal lens 1 and the lens substrate according to the embodiment of the present invention.

6 is a flowchart of the method for preparing the liquid crystal lens according to a second embodiment of the substrate of the present invention.

among them:

100. The liquid crystal lens;. A first substrate 110;. 111 of the first substrate; a. A first electrode layer 112;. 1121 strip electrodes;. The first alignment film 113;. The second substrate 120; 121 of the second substrate. ;. the second electrode layer 122;. the second alignment film 123;. the liquid crystal layer 130;. the display panel 20; 21 lens.

detailed description

To enable those skilled in the art better understand the technical solutions of the present invention, the following invention will be described in further detail in conjunction with accompanying drawings and specific embodiments.

Example 1

5, the present embodiment provides a substrate 110 for a liquid crystal lens embodiment comprising a first substrate 111 and the first electrode layer 111 disposed on the first substrate 112, a first electrode layer 112 includes a plurality of strip electrodes 1121 spaced apart, the section of each strip-shaped electrode 1121 extending perpendicular to a direction of closing arcuate; arcuate portion 111 of the closure adjacent to the first substrate and includes a curved away from the first substrate linear portion 111.

The present embodiment provides a liquid crystal lens 100 includes a first substrate 110, a second substrate 120, and a liquid crystal layer 130; wherein, the first substrate 110 includes a first electrode layer 112 and the first alignment film 113, a second substrate 120 comprising a second electrode layer 122 and the second alignment film 123, wherein the first substrate 110 and second substrate 120 disposed opposite spaced, liquid crystal layer 130 positioned between the first substrate 110 and second substrate 120, a first electrode layer 112 disposed on the first substrate 111 of the first substrate 110, covered by the first alignment film 113, the second electrode layer 122 is disposed on the second substrate 121 of the second substrate 120, covered by the second alignment film 123.

Strip electrode in the cross section of a substrate for the embodiment of the liquid crystal lens 110 and the liquid crystal lens 100 of the present embodiment is a 1121 arc closed, since the light transmittance of the strip electrode 1121 spaced around the area to slow changes in difference, the light transmission does not significantly change the brightness, the light and dark fringe spacing pieces will not reduce the probability of generating moire.

1121 closure strip electrode section gradually thinner from the intermediate arcuate sides in the thickness. Preferably, it closed arcuate height (i.e. the distance between the arc and the straight portion) of

Figure PCTCN2014091388-appb-000004
More preferably, the height of the closed curved
Figure PCTCN2014091388-appb-000005
Strip electrodes 1121 above thickness range can secure a large transmittance, and easy to produce.

Preferably, the width of the arcuate closed (the length of the straight portion) is 5 to 20 m, the distance between the adjacent strip electrodes 1121 of 10-20 m; width above to better meet the 3D display of the liquid crystal lens design requirements.

Preferably the strip electrode 1121 is a transparent conductive inks were prepared, such materials having good flowability capable of having certain properties on the basis of conductivity, in cross-section to facilitate the closure strip electrodes 1121 made arcuate. It will be appreciated that conventional transparent conductive ink are suitable.

Specifically, the transparent conductive silver ink is a water-soluble or poly-3,4-ethylene dioxythiophene / polystyrene sulfonate.

Example 2

6, the embodiment provides a method of preparation of the substrate according to the present embodiment, comprising the steps of:

1) a transparent conductive ink on a first substrate, a wire mesh screen having a mesh pattern stripe by a screen printing screen;

2) After a transparent conductive ink diffusion, the transparent conductive ink by drying, to obtain a closed cross section arcuate strip electrodes.

Specifically, the production steps can be completed with the following process parameters:

1) adjusting the viscosity of a water-soluble silver, its viscosity is 3-20p, in this embodiment 6P; width produced halftone screen having a mesh pattern stripe, wherein the strip-shaped mesh of 5 to 20 m, mesh a width slightly less than the length (due to the presence of a water-soluble silver diffusion), a width of 10μm mesh strip embodiment according to the present embodiment of the linear portion of the arcuate closed.

2) water-soluble silver screen by screen printing on a first substrate 111, as shown in the cross-sectional shape of the stripe-shaped electrode 1121 shown in FIG. 3 when the printing is completed has a rectangular shape.

3) water-soluble silver diffusion, diffusion time is generally 1-15min, in this embodiment 2min, strip-shaped cross-sectional shape of the diffusion electrode 1121 shown in FIG. 6, the sectional shape after completion of the diffusion electrode strip 1121 is closed arc. Next, strip-shaped electrode 1121 and dried, can be dried at 50-80 deg.] C, the present embodiment was dried at 60 ℃, drying time may be 2-8min, the present embodiment is a 3min, by controlling the viscosity of a water-soluble silver powder, drying rate and diffusion time so that the height of the stripe electrodes 1121

Figure PCTCN2014091388-appb-000006
Example strip electrodes height 1121 of the present embodiment is
Figure PCTCN2014091388-appb-000007

Preparation of other functional layers of the liquid crystal lens 100 may be prepared using known methods, not further described.

Example sectional preparation method of the present embodiment using a screen printing mesh electrode 1121 is closed curved stripe, a transparent conductive ink (a water-soluble silver) mobility, diffusion of the transparent conductive ink on both sides, to both sides of the transparent conductive ink diffusion, and cured to form a cross-sectional bar shape closed curved electrode 1121, the production method is simple, simplifying the process, reducing production costs.

It will be appreciated that the conductive ink may be a transparent poly 3,4-ethylene dioxythiophene / polystyrene sulfonate, prepared above parameters may be adjusted, for the preparation of highly

Figure PCTCN2014091388-appb-000008
1121 bar electrode.

Example 3

This embodiment provides a stereoscopic display device comprising a display panel and a liquid crystal display disposed on the outer lens surface of the panel, a liquid crystal lens using the above liquid crystal lens.

It will be appreciated that the above embodiments are merely to illustrate the principles of the exemplary embodiments of the present invention is employed, but the present invention is not limited thereto. The stereoscopic display device may be: mobile phones, tablet computers, televisions, monitors, notebook computers, digital photo frame, a navigator, and any other product or component having a display function. This embodiment of the stereoscopic display apparatus may refer to the above-described embodiment, repeated description of which will not be repeated. For those of ordinary skill in the art, without departing from the spirit and substance of the invention can be made various modifications and improvements, these modifications and improvements into the protection scope of the invention.

Claims (12)

  1. A substrate for a liquid crystal lens, comprising a first substrate and provided on said first substrate first electrode layer and a first alignment film, wherein the first electrode layer comprises a plurality of spaced strip-shaped electrodes, characterized in that the cross section perpendicular to the extending direction of each of the arcuate strip-shaped electrodes is closed; said closure comprising a curved away from the straight and arcuate portions of the first substrate adjacent to the first substrate, section.
  2. The substrate according to claim 1, characterized in that the closure is arcuate height
    Figure PCTCN2014091388-appb-100001
  3. The substrate according to claim 2, characterized in that the closure is arcuate height
    Figure PCTCN2014091388-appb-100002
  4. The substrate according to claim 1, wherein a width of said arcuate closing 5-20μm.
  5. The substrate according to claim 1, wherein the distance between adjacent strip electrodes is 10-20μm.
  6. The substrate according to claim 1, wherein said electrode is a stripe-shaped transparent conductive inks were prepared.
  7. The substrate according to claim 6, wherein said water-soluble silver transparent conductive ink.
  8. The substrate according to claim 6, characterized in that the transparent conductive ink is poly 3,4-ethylene dioxythiophene / polystyrene sulfonate.
  9. A process for preparing a substrate according to any 1-8 claim, characterized in, comprising the steps of:
    The transparent conductive ink on a first substrate, a wire mesh screen having a mesh pattern stripe by a screen printing screen; and
    After diffusion of the transparent conductive ink, the transparent conductive ink by drying, to obtain a closed cross section arcuate strip electrodes.
  10. A method of preparing said substrate as claimed in claim 9, wherein the transparent conductive ink viscosity 3-20p, the width of the strip-shaped mesh of 5 to 20 m, the transparent conductive ink diffusion time is 1-15min, a transparent conductive ink drying temperature is 50-80 ℃, drying time was 2-8min, the height of the strip-shaped electrode is
    Figure PCTCN2014091388-appb-100003
  11. A liquid crystal lens, comprising: first and second substrates spaced apart, and a liquid crystal layer located between the first substrate and the second substrate,
    Wherein said first substrate is a first substrate according to any of claims 1 to 8;
    The second substrate comprises a second substrate and a second electrode layer provided on the second substrate and a second electrode formed on the second alignment film layer, wherein
    The first electrode layer and said second electrode layer for generating an electric field.
  12. A stereoscopic display apparatus comprising a display panel and a display panel provided on the outside surface of the liquid crystal lens, a liquid crystal lens using liquid crystal lens as claimed in claim 11.
PCT/CN2014/091388 2014-03-06 2014-11-18 Substrate for liquid crystal lens and preparation method therefor, liquid crystal lens and stereoscopic display device WO2015131552A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103869573B (en) * 2014-03-06 2017-10-27 京东方科技集团股份有限公司 Preparation method of the liquid crystal lens substrate
CN104597685B (en) * 2014-12-30 2018-07-06 深圳市魔眼科技有限公司 Liquid lens and liquid crystal display device
CN104597683A (en) * 2014-12-30 2015-05-06 深圳市亿思达科技集团有限公司 Liquid crystal lens capable of displaying in multiple directions and liquid crystal display device
CN104597684A (en) * 2014-12-30 2015-05-06 深圳市亿思达科技集团有限公司 Liquid crystal lens and liquid crystal display device based on naked eye three-dimensional display

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US6859333B1 (en) * 2004-01-27 2005-02-22 Research Foundation Of The University Of Central Florida Adaptive liquid crystal lenses
CN101261560A (en) * 2008-04-17 2008-09-10 张树峰 Touch screen electrode preparation method
CN102253562A (en) * 2011-07-13 2011-11-23 深圳超多维光电子有限公司 Stereo display device and liquid crystal lens thereof
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CN202600323U (en) * 2012-06-12 2012-12-12 京东方科技集团股份有限公司 Electric drive liquid crystal lens liquid crystal cell and two-dimension and three-dimension switchable display device
CN103257486A (en) * 2012-02-20 2013-08-21 株式会社日本显示器东 The display device
CN103345082A (en) * 2013-07-05 2013-10-09 深圳超多维光电子有限公司 Liquid crystal lens, stereo display method and stereo display device
CN103869573A (en) * 2014-03-06 2014-06-18 京东方科技集团股份有限公司 Base plate for liquid crystal lens, manufacturing method thereof, liquid crystal lens and stereo display device

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Publication number Priority date Publication date Assignee Title
US6859333B1 (en) * 2004-01-27 2005-02-22 Research Foundation Of The University Of Central Florida Adaptive liquid crystal lenses
CN101261560A (en) * 2008-04-17 2008-09-10 张树峰 Touch screen electrode preparation method
US20120013606A1 (en) * 2010-07-16 2012-01-19 Au Optronics Corporation Parallax Barrier and Application Thereof
US20120075434A1 (en) * 2010-09-28 2012-03-29 Hwi Kim Three dimensional image display
CN102253562A (en) * 2011-07-13 2011-11-23 深圳超多维光电子有限公司 Stereo display device and liquid crystal lens thereof
CN103257486A (en) * 2012-02-20 2013-08-21 株式会社日本显示器东 The display device
CN202600323U (en) * 2012-06-12 2012-12-12 京东方科技集团股份有限公司 Electric drive liquid crystal lens liquid crystal cell and two-dimension and three-dimension switchable display device
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CN103869573A (en) * 2014-03-06 2014-06-18 京东方科技集团股份有限公司 Base plate for liquid crystal lens, manufacturing method thereof, liquid crystal lens and stereo display device

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