CN102914894B - Negative liquid crystal display for no-backlight state - Google Patents
Negative liquid crystal display for no-backlight state Download PDFInfo
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- CN102914894B CN102914894B CN201210359142.8A CN201210359142A CN102914894B CN 102914894 B CN102914894 B CN 102914894B CN 201210359142 A CN201210359142 A CN 201210359142A CN 102914894 B CN102914894 B CN 102914894B
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Abstract
The invention relates to a negative liquid crystal display for the no-backlight state. The negative liquid crystal display comprises a composite film, a liquid crystal box, another composite film which are arranged from top to bottom. The liquid crystal box comprises an upper ITO (indium tin oxide) glass substrate, an upper PI (polyimide) orienting layer, a liquid crystal layer, a lower PI orienting layer, a lower ITO glass substrate and frame adhesives, wherein the frame adhesives are used for sealing the upper PI orienting layer, the liquid crystal layer and the lower PI orienting layer. Compared with the prior art, the negative liquid crystal display for no-backlight state has the advantages that high comparison degree is achieved in two states with and without a backlight source. When the liquid crystal display is used with a white backlight source, the base color is purely black, and display scripts are white, so that high comparison degree is realized. When the liquid crystal display is used with the backlight source at non-lighting state, the base color is black, and the display scripts are silver grey so as to be read clearly.
Description
Technical field
The present invention relates to a kind of negative aobvious liquid crystal display that can be used for without backlight state.
Background technology
In recent years liquid crystal display because the feature such as its volume is little, lightweight, low in energy consumption know well by increasing people, it can be divided into two large classes according to display mode: just display mode and negative display mode.Positive display mode: when not showing, screen is generally white or canescence, the font of display when display or image are black or blue or purple.Negative display mode: when not showing, screen is generally black or blueness, the font of display when display or image do not have color i.e. transparent.Negative aobvious liquid crystal display all needs to coordinate backlight to use under normal circumstances, and below liquid crystal display, namely arrange a light emitting source, the font of display or the color relation of image are the colors of backlight.If but removing backlight, negative aobvious liquid crystal display will be very dark, and transparent font or image can blend together of the same colour with the background of surrounding, cannot effectively identify.
Summary of the invention
Under having backlight and there is no backlight two kinds of states, the liquid crystal display of higher contrast is all had the while of the object of this invention is to provide a kind of, DFSTN (Double Film Super Twisted Nematic, bilayer film supertwist is to row) technology is utilized to realize.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of negative aobvious liquid crystal display that can be used for without backlight state, comprise the composite membrane, liquid crystal cell, the composite membrane that arrange from top to bottom, liquid crystal cell comprises the upper ito glass substrate arranged, upper PI oriented layer, liquid crystal layer, lower PI oriented layer, lower ito glass substrate from top to bottom, also comprises the frame adhesive for closing upper PI oriented layer, liquid crystal layer, lower PI oriented layer.This liquid crystal display all has higher contrast under having backlight and not having backlight two kinds of states; This liquid crystal display and white backlight source with the use of time, background color is ater, and display font is white, the backlight of this liquid crystal display and not illuminating state with the use of time, background color is ater, and display font is silver gray, and clear readable.
The manufacturing process of described liquid crystal display, adopts DFSTN (Double Film Super Twisted Nematic, bilayer film supertwist is to row) technology to realize, specifically comprises following content:
1) the upper ito glass substrate described in, lower ito glass substrate adopt low square resistance ITO electropane material, and its thickness range is 0.4mm-1.1 mm, and sheet resistance scope is 7 Ω/-15 Ω/;
2) be coated with PI alignment agent in the ITO side of upper ito glass substrate and lower ito glass substrate, adopt the PI condition of cure of 250-270 DEG C, with friction flannelette with the angle friction of regulation, make PI oriented layer form groove;
3) within 5.0s-5.5s time, at the wadding that upper ito glass substrate surface spray diameter range is 5.5 μm-7.0 μm, make wadding be every square millimeter 70-160 with density range to be uniformly distributed, ensure that thickness of liquid crystal box is between scope 5.5 μm-7.0 μm, be coated with frame adhesive and leave one or more perfusing hole, upper and lower PI oriented layer on request orientation is arranged, and uses epoxide-resin glue accurately to fit upper ito glass substrate and lower ito glass substrate as binder, formation liquid crystal cell; The optical path difference of liquid crystal cell controls between nd=700-900nm, and its size is the refractive anisotrop n of liquid crystal molecule and the product of the thick d of liquid crystal cell box;
4) all to fit on the upper and lower ito glass substrate surface of liquid crystal cell polaroid, described polaroid is up and down composite membrane, its upper strata composite membrane be band Z axis compensate twin shaft composite membrane, consist of degree of polarization be greater than 99% high-polarization polaroid and offset be composited with special angle 30-90 ° at the Z axis compensate film of 300-500nm; Its lower floor's composite membrane is that the semi-transparent polaroid of silver of high reverse--bias pattern and offset are composited with specific 10-50 ° at the compensate film of 300-500nm; And the angle through the axle up and down frictional direction of PI oriented layer corresponding to difference of upper and lower composite membrane is at 45-50 °.
Compared with prior art, the invention has the beneficial effects as follows:
This liquid crystal display all has higher contrast, 1 simultaneously under having backlight and not having backlight two kinds of states) this liquid crystal display and white backlight source with the use of time, background color is ater, and display font is white, to realize higher contrast.2) this liquid crystal display and not illuminating state backlight with the use of time, background color is ater, and display font is silver gray and clear readable.
Accompanying drawing explanation
Fig. 1 is the structural representation of liquid crystal display.
Fig. 2 is the structural representation of liquid crystal display liquid crystal cell.
In figure: 1-composite membrane, 2-liquid crystal cell, 3-composite membrane, 4-upper ito glass substrate 5-upper PI oriented layer 6-liquid crystal layer 7-frame adhesive 8-wadding 9-lower ito glass substrate 10-lower PI oriented layer 11-liquid crystal
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
See Fig. 1, Fig. 2, a kind of negative aobvious liquid crystal display that can be used for without backlight state, comprise the composite membrane 1, liquid crystal cell 2, the composite membrane 3 that arrange from top to bottom, liquid crystal cell 2 comprises the upper ito glass substrate 4 arranged, upper PI oriented layer 5, liquid crystal layer 6, lower PI oriented layer 10, lower ito glass substrate 9 from top to bottom, also comprises the frame adhesive 7 for closing upper PI oriented layer 5, liquid crystal layer 6, lower PI oriented layer 10; Liquid crystal layer 6 is made up of wadding 8 and liquid crystal 11, and wadding 8 is 70 every square millimeter-160 with density range and is uniformly distributed, and is around filled by liquid crystal 11; Composite membrane 1 is the twin shaft polaroid that special band Z axis compensates, consist of degree of polarization be greater than 99% high-polarization polaroid and offset be composited with special angle 30-90 ° at the Z axis compensate film of 300-500nm; Composite membrane 3 is that the semi-transparent polaroid of silver of high reverse--bias pattern and offset are composited with specific 10-50 ° at the compensate film of 300-500nm; Liquid crystal layer 6 is super-twist nematic, and thickness range is 5.5 μm-7.0 μm; Upper ito glass substrate 4 and lower ito glass substrate 9 adopt ITO electropane material, and its thickness range is 0.4mm-1.1 mm, and sheet resistance scope is 7 Ω/-15 Ω/.
The manufacturing process of this kind of liquid crystal display, comprises the following steps:
1) by the needs of client to displaying contents, determine that dot matrix size and the pixel of liquid crystal display are how many, flagpole pattern is etched respectively on upper ito glass substrate and lower ito glass substrate, composition dot matrix, described upper and lower ito glass substrate adopts ITO electropane material, its thickness range is 0.4mm-1.1 mm, and sheet resistance scope is 7 Ω/-15 Ω/;
2) TOP and PI alignment agent is coated with in the ITO side of upper ito glass substrate and lower ito glass substrate, the UV energy of employing >=8000mj/cm2 carries out the UV upgrading of TOP, adopt the PI condition of cure of 250 ~ 270 DEG C, with friction flannelette with the angle friction of regulation, coordinate the friction condition be applicable to, make PI oriented layer form groove;
3) within 5.0s-5.5s time, at the wadding that upper ito glass substrate surface spray diameter range is 5.5 μm-7.0 μm, make wadding be every square millimeter 70-160 with density range to be uniformly distributed, ensure that thickness of liquid crystal box is between scope 5.5 μm-7.0 μm, be coated with frame adhesive and leave one or more perfusing hole, upper and lower PI oriented layer on request particular orientation is arranged, epoxide-resin glue is used accurately to fit upper ito glass substrate and lower ito glass substrate as binder, formation liquid crystal cell; The optical path difference of liquid crystal cell controls between nd=700-900nm, and its size is the refractive anisotrop n of liquid crystal molecule and the product of the thick d of liquid crystal cell box;
4) after sealing perfusing hole, all to fit on the upper and lower ito glass substrate surface of liquid crystal cell polaroid, described polaroid is up and down all composite membrane, its upper strata composite membrane is the twin shaft composite membrane that special band Z axis compensates, consist of degree of polarization be greater than 99% high-polarization polaroid and offset be composited at Z axis compensate film instrument special angle 30-90 ° of 300-500nm; Its lower floor's composite membrane is that the semi-transparent polaroid of silver of high reverse--bias pattern and offset are composited with specific 10-50 ° at the compensate film of 300-500nm.And the angle through the axle up and down frictional direction of PI oriented layer corresponding to difference of upper and lower composite membrane is at about 45-50 °;
The foregoing is only the preferred embodiments of the present invention; difficult point of the present invention is the coordinating of the optical path difference parameter of the complex method of upper and lower composite membrane, composite membrane and liquid crystal cell, composite membrane optical axis coordinates with liquid crystal cell upper and lower PI layer rubbing angle; all within the technology of the present invention principle; any amendment of doing, equivalent replacement, be all included in protection scope of the present invention.
Claims (1)
1. one kind can be used for the negative aobvious liquid crystal display without backlight state, comprise the composite membrane, liquid crystal cell, the composite membrane that arrange from top to bottom, liquid crystal cell comprises the upper ito glass substrate arranged, upper PI oriented layer, liquid crystal layer, lower PI oriented layer, lower ito glass substrate from top to bottom, also comprises the frame adhesive for closing upper PI oriented layer, liquid crystal layer, lower PI oriented layer; The invention is characterized in, this liquid crystal display all has higher contrast under having backlight and not having backlight two kinds of states; This liquid crystal display and white backlight source with the use of time, background color is ater, and display font is white, the backlight of this liquid crystal display and not illuminating state with the use of time, background color is ater, and display font is silver gray, and clear readable; The manufacturing process of described liquid crystal display, adopts DFSTN bilayer film supertwist to realize to row technology, specifically comprises following content:
1) the upper ito glass substrate described in, lower ito glass substrate adopt low square resistance ITO electropane material, and its thickness range is 0.4mm-1.1 mm, and sheet resistance scope is 7 Ω/-15 Ω/;
2) be coated with PI alignment agent in the ITO side of upper ito glass substrate and lower ito glass substrate, adopt the PI condition of cure of 250-270 DEG C, with friction flannelette with the angle friction of regulation, make PI oriented layer form groove;
3) within 5.0s-5.5s time, at the wadding that upper ito glass substrate surface spray diameter range is 5.5 μm-7.0 μm, make wadding be every square millimeter 70-160 with density range to be uniformly distributed, ensure that thickness of liquid crystal box is between scope 5.5 μm-7.0 μm, be coated with frame adhesive and leave one or more perfusing hole, upper and lower PI oriented layer on request orientation is arranged, and uses epoxide-resin glue accurately to fit upper ito glass substrate and lower ito glass substrate as binder, formation liquid crystal cell; The optical path difference of liquid crystal cell controls between nd=700-900nm, and its size is the refractive anisotrop n of liquid crystal molecule and the product of the thick d of liquid crystal cell box;
4) all to fit on the upper and lower ito glass substrate surface of liquid crystal cell polaroid, described polaroid is up and down composite membrane, its upper strata composite membrane be band Z axis compensate twin shaft composite membrane, consist of degree of polarization be greater than 99% high-polarization polaroid and offset be composited with special angle 30-90 ° at the Z axis compensate film of 300-500nm; Its lower floor's composite membrane is that the semi-transparent polaroid of silver of high reverse--bias pattern and offset are composited with specific 10-50 ° at the compensate film of 300-500nm; And the angle through the axle up and down frictional direction of PI oriented layer corresponding to difference of upper and lower composite membrane is at 45-50 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210359142.8A CN102914894B (en) | 2012-09-24 | 2012-09-24 | Negative liquid crystal display for no-backlight state |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210359142.8A CN102914894B (en) | 2012-09-24 | 2012-09-24 | Negative liquid crystal display for no-backlight state |
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| CN102914894A CN102914894A (en) | 2013-02-06 |
| CN102914894B true CN102914894B (en) | 2015-04-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105404044A (en) * | 2015-11-20 | 2016-03-16 | 深圳市瑞福达液晶显示技术股份有限公司 | LCD with optical compensation super twisted nematic phase negative reflection mode |
| CN106292053A (en) * | 2016-10-31 | 2017-01-04 | 亚世光电（鞍山）有限公司 | A kind of VA type high density display lattice lcd display |
| CN109324451A (en) * | 2018-09-12 | 2019-02-12 | 东莞通华液晶有限公司 | A kind of positive and negative figure conversion display liquid crystal display and upper and lower polarizer press the display methods of positive negative chart-pattern configuration |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729424A (en) * | 2002-12-19 | 2006-02-01 | 皇家飞利浦电子股份有限公司 | Normally white super twisted nematic liquid crystal display device |
| CN200976079Y (en) * | 2006-08-07 | 2007-11-14 | 比亚迪股份有限公司 | Ultrawide-viewing angle liquid crystal display |
| CN102681256A (en) * | 2012-04-16 | 2012-09-19 | 鞍山亚世光电显示有限公司 | Low-power-consumption electronic price tag liquid crystal display (LCD) and process for manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7265801B2 (en) * | 2004-09-21 | 2007-09-04 | Tpo Displays Corp. | Display panel, and display device and electronic device using thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729424A (en) * | 2002-12-19 | 2006-02-01 | 皇家飞利浦电子股份有限公司 | Normally white super twisted nematic liquid crystal display device |
| CN200976079Y (en) * | 2006-08-07 | 2007-11-14 | 比亚迪股份有限公司 | Ultrawide-viewing angle liquid crystal display |
| CN102681256A (en) * | 2012-04-16 | 2012-09-19 | 鞍山亚世光电显示有限公司 | Low-power-consumption electronic price tag liquid crystal display (LCD) and process for manufacturing same |
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Address after: 114031 no.196 Qianshan Middle Road, Anshan City, Liaoning Province Patentee after: Yashi Optoelectronics (Group) Co.,Ltd. Address before: 114031 no.196 Qianshan Middle Road, Anshan City, Liaoning Province Patentee before: ANSHAN YES OPTOELECTRONICS DISPLAY Co.,Ltd. |