CN104898339A - Liquid-crystal display device - Google Patents

Liquid-crystal display device Download PDF

Info

Publication number
CN104898339A
CN104898339A CN201510374476.6A CN201510374476A CN104898339A CN 104898339 A CN104898339 A CN 104898339A CN 201510374476 A CN201510374476 A CN 201510374476A CN 104898339 A CN104898339 A CN 104898339A
Authority
CN
China
Prior art keywords
liquid crystal
light
substrate
crystal molecule
crystal cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510374476.6A
Other languages
Chinese (zh)
Other versions
CN104898339B (en
Inventor
张兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianma Microelectronics Co Ltd
Shanghai Tianma Microelectronics Co Ltd
Original Assignee
Tianma Microelectronics Co Ltd
Shanghai Tianma Microelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianma Microelectronics Co Ltd, Shanghai Tianma Microelectronics Co Ltd filed Critical Tianma Microelectronics Co Ltd
Priority to CN201510374476.6A priority Critical patent/CN104898339B/en
Publication of CN104898339A publication Critical patent/CN104898339A/en
Application granted granted Critical
Publication of CN104898339B publication Critical patent/CN104898339B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a liquid-crystal display device. The liquid-crystal display device comprises an optical layer, a liquid-crystal display box, first liquid-crystal molecules, a liquid-crystal compensation box, second liquid-crystal molecules and a plane polarizer, wherein the liquid-crystal display box is arranged on the optical layer and comprises a first substrate and a second substrate which are oppositely arranged, the first liquid-crystal molecules are arranged between the first substrate and the second substrate, and included angle between a polarization shaft of the optical layer and the distribution direction of the first liquid-crystal molecules is 45 degrees; the liquid-crystal compensation box is arranged on one side of the second substrate distant from the first substrate and comprises a third substrate and a fourth substrate which are oppositely arranged; the second liquid-crystal molecules are arranged between the third substrate and the fourth substrate, and the distribution direction of the second liquid-crystal molecules is perpendicular to that of the first liquid-crystal molecules; the plane polarizer is arranged on one side of the fourth substrate distant from the third substrate, included angle between the polarization shaft of the polarizer and the distribution direction of the second liquid-crystal molecules is 45 degrees, and the polarization shaft of the plane polarizer is perpendicular to that of the optical layer. By the liquid-crystal display device, contrast ratio of the liquid-crystal display device is increased.

Description

A kind of liquid crystal indicator
Technical field
The present invention relates to display technique field, be specifically related to a kind of liquid crystal indicator.
Background technology
Along with development and the demand growth of display technique, liquid crystal indicator is widely used in various electric equipment.Liquid crystal indicator has the advantages such as volume is little, lightweight.Available liquid crystal display device comprises full-transparency type liquid crystal indicator, translucent liquid crystal display device and reflection-type liquid-crystal display device.
Full-transparency type liquid crystal indicator adopts back light as incident light, after polaroid, form polarized light, compensates the phase differential of polarized light in display liquid crystal cell by compensating polaroid.Its defect is, is difficult to see displaying contents clearly under extraneous high light, if its compensation polaroid used stops production, the cost developing new compensation polaroid is very high.And this compensation model cannot realize liquid crystal temperature to be compensated, and when high/low temperature, contrast is poor.
Translucent liquid crystal display device can adopt backlight or ambient light (natural light) as its incident light source, all can provide good display effect at indoor or outdoors.The structure of existing translucent liquid crystal display device is that pixel region is set to photic zone and echo area, and upper and lower polaroid is all with QWP and HWP blooming, and Design Mode is normal white mode.Its defect is, blooming causes high expensive, and in high/low temperature situation, contrast decay is serious.
Reflection-type liquid-crystal display device adopts ambient light (natural light) as its incident light source, and its display mode is normal black pattern, and after increase QWP blooming, its display mode is normal white mode.Its defect is, cannot realize temperature compensation, poor contrast during high/low temperature, and compensates polaroid high expensive.
Summary of the invention
The invention provides a kind of liquid crystal indicator, to solve the problem of prior art.
A kind of liquid crystal indicator provided by the invention, comprising:
Optical layers;
Be positioned at the display liquid crystal cell in described optical layers, described display liquid crystal cell comprises the first substrate and second substrate that are oppositely arranged, and the first liquid crystal molecule be arranged between described first substrate and described second substrate, the angle of the polarizing axis of described optical layers and the arragement direction of described first liquid crystal molecule is 45 °;
Be positioned at described second substrate and deviate from compensation liquid crystal cell on described first substrate side, described compensation liquid crystal cell comprises the 3rd substrate and the tetrabasal be oppositely arranged, and the second liquid crystal molecule be arranged between described 3rd substrate and described tetrabasal, the arragement direction of described second liquid crystal molecule is mutually vertical with the arragement direction of described first liquid crystal molecule;
Be positioned at described tetrabasal and deviate from face polaroid on described 3rd substrate side, the angle of the polarizing axis of described polaroid and the arragement direction of described second liquid crystal molecule is 45 °, and the polarizing axis of described polaroid is mutually vertical with the polarizing axis of described optical layers.
A kind of liquid crystal indicator provided by the invention, comprise optical layers, display liquid crystal cell, the compensation liquid crystal cell that display liquid crystal cell is arranged and face polaroid, wherein, the liquid crystal of this compensation liquid crystal cell is same with the liquid crystal phase of display liquid crystal cell, arragement direction is different, by display liquid crystal cell with compensate liquid crystal cell with the use of method, the black state display/white state display of liquid crystal indicator during by not powering up and powering up, improve the display comparison degree of liquid crystal indicator, the heating function simultaneously compensating liquid crystal cell improves the high/low temperature contrast of liquid crystal indicator and has widened low-temperature working temperature, compensate liquid crystal cell simultaneously and solve the problem compensating polaroid and stopped production, reduce cost, liquid crystal indicator provided by the invention solves the problem of prior art.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce doing one to the accompanying drawing used required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 a is the schematic diagram of a kind of liquid crystal indicator that the embodiment of the present invention provides;
Fig. 1 b is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides;
Fig. 2 a is the schematic diagram of the another kind of liquid crystal indicator that the embodiment of the present invention provides;
Fig. 2 b is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides;
Fig. 3 a is the schematic diagram of another liquid crystal indicator that the embodiment of the present invention provides;
Fig. 3 b is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides;
Fig. 4 a is the schematic diagram of another liquid crystal indicator that the embodiment of the present invention provides;
Fig. 4 b is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides; .
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, hereinafter with reference to the accompanying drawing in the embodiment of the present invention, by embodiment, technical scheme of the present invention is described clearly and completely, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
First embodiment of the invention provides a kind of liquid crystal indicator, and the technical scheme of this embodiment is applicable to the situation of the contrast improving liquid crystal indicator.
Shown in figure 1a, it is the schematic diagram of a kind of liquid crystal indicator that the embodiment of the present invention provides.As shown in the figure, this liquid crystal indicator comprises: optical layers 110; Be positioned at the display liquid crystal cell 120 in this optical layers 110, this display liquid crystal cell 120 comprises the first substrate 121 and second substrate 122 that are oppositely arranged, and the first liquid crystal molecule 123 be arranged between first substrate 121 and second substrate 122, the angle of the polarizing axis of this optical layers 110 and the arragement direction of the first liquid crystal molecule 123 is 45 °; Be positioned at second substrate 122 and deviate from compensation liquid crystal cell 130 on first substrate 121 side, this compensation liquid crystal cell 130 comprises the 3rd substrate 131 and the tetrabasal 132 be oppositely arranged, and the second liquid crystal molecule 133 be arranged between the 3rd substrate 131 and tetrabasal 132, the arragement direction of this second liquid crystal molecule 133 is mutually vertical with the arragement direction of the first liquid crystal molecule 123; Be positioned at tetrabasal 132 and deviate from face polaroid 140 on the 3rd substrate 131 side, the angle of the polarizing axis of face polaroid 140 and the arragement direction of the second liquid crystal molecule 133 is 45 °, and the polarizing axis of this face polaroid 140 is mutually vertical with the polarizing axis of optical layers 110.
Preferably, in the present embodiment, it is 45 ° with the angle of the polarizing axis of optical layers 110, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 is 0 °, the arragement direction of the second liquid crystal molecule 133 compensating liquid crystal cell 130 is 90 °, and the angle of the polarizing axis of face polaroid 140 is 135 ° and is described for example.
As mentioned above, the imaging of known liquid crystal indicator must rely on polarized light, and incident light or natural light normally do not have deflection polarity, and therefore optical layers 110 needs incident light to be converted to polarized light, so that liquid crystal indicator imaging.It can thus be appreciated that optical layers 110 has polarizing axis, when incident light is by optical layers 110, optical layers 110 can make the light that in incident light, direction of vibration is consistent with optical layers 110 polarizing axis direction pass through and form polarized light, and the light that in incident light, direction of vibration is vertical with optical layers 110 polarizing axis is absorbed by optical layers 110, incident light is converted to direction of vibration and fixes and the polarized light consistent with its polarizing axis direction by optical layers 110 like this.
Display liquid crystal cell 120 is positioned in optical layers 110, therefore the polarized light that incident light is formed after optical layers 110 enters display liquid crystal cell 120, display liquid crystal cell 120 comprises the first substrate 121 and second substrate 122 that are oppositely arranged, and the first liquid crystal molecule 123 be arranged between first substrate 121 and second substrate 122, compensating liquid crystal cell 130 is positioned on display liquid crystal cell 120, this compensation liquid crystal cell 130 comprises the 3rd substrate 131 and the tetrabasal 132 be oppositely arranged, and the second liquid crystal molecule 133 be arranged between the 3rd substrate 131 and tetrabasal 132, so polarized light is by after the outgoing of display liquid crystal cell 120, incident compensation liquid crystal cell 130, again by face polaroid 140 outgoing.When not added electric field, display liquid crystal cell 120, the arragement direction compensating the liquid crystal molecule in liquid crystal cell 130 are all constant, and when applying electric field, display liquid crystal cell 120, the arragement direction of liquid crystal molecule compensated in liquid crystal cell 130 all change.Therefore need in the present embodiment separately to discuss and apply electric field and under not applying electric field conditions, the principle of work of liquid crystal indicator.
For the situation of not added electric field.The angle of the polarizing axis of known optical layer 110 and the arragement direction of the first liquid crystal molecule 123 is 45 °, and the direction of vibration of polarized light that incident light is formed after optical layers 110 is consistent with optical layers 110 polarizing axis direction, therefore, when the polarized light that incident light is formed after optical layers 110 enters display liquid crystal cell 120, the direction of vibration of this polarized light and the angle of the arragement direction of the first liquid crystal molecule 123 in display liquid crystal cell 120 are also in 45 °.
The arragement direction that polarized light described above enters display liquid crystal cell 120 its direction of vibration rear and the first liquid crystal molecule 123 is 45 ° of angles, based on the birefringence rule of liquid crystal molecule, according to the birefringence rule of liquid crystal, the polarized light entered in display liquid crystal cell 120 can be divided into that direction of vibration is orthogonal, velocity of propagation is different, refractive index two bundle polarized lights not etc., i.e. o light and e light, wherein, the refractive index of o light is constant in communication process, and the refractive index of e light changes in communication process.Because o light is different with the velocity of propagation of e light in display liquid crystal cell 120, therefore o light and e light produce phase differential in communication process, so when o light and e light are by showing second substrate 122 outgoing of liquid crystal cell 120 and inciding compensation liquid crystal cell 130 lower surface, between o light and e light, there is phase differential.
The o light that the light of different wave length λ is divided into is different with the phase differential of e light in display liquid crystal cell 120, as wavelength X 1the o light that the green glow being about 550nm is divided into and the phase differential of e light in display liquid crystal cell 120 are about λ 1/ 2, as wavelength X 2the o light that the blue light being about 470nm is divided into and the phase differential of e light in display liquid crystal cell 120 are more than λ 2/ 2, as wavelength X 3the o light that the ruddiness being about 600nm is divided into and the phase differential of e light in display liquid crystal cell 120 are less than λ 3/ 2.If now the direct upper surface of second substrate 122 at display liquid crystal cell 120 sticks a slice polaroid, this polaroid polarizing axis is parallel with optical layers 110 polarizing axis, then the o light of green glow and e light are with λ 1/ 2 phase differential outgoing show liquid crystal cells 120 and incident polaroid, and because this polaroid polarizing axis is parallel with optical layers 110 polarizing axis, therefore o light and e light are with λ 1/ 2 phase differential outgoing polaroids, and corresponding blue with time red, because its phase differential exceeds or be less than the half of its wavelength, so light leak can be caused when blue light and ruddiness outgoing polaroid, cause the non-ater of the background color of liquid crystal indicator, and then the display effect that cannot realize ideal.It can thus be appreciated that, display liquid crystal cell 120 is arranged and compensates liquid crystal cell 130, in order to compensate the phase differential of o light and e light.
In order to realize ideal display effect, compensating liquid crystal cell 130 needs the phase difference compensation of o light and e light to go back.The o light be divided into allow green glow, blue light, ruddiness and e light compensation of phase in compensation liquid crystal cell 130 is poor, then arrange at this arragement direction compensating the second liquid crystal molecule 133 in liquid crystal cell 130 vertical with the arragement direction of the first liquid crystal molecule 123 in display liquid crystal cell 120.
When o light and e light are by second substrate 122 outgoing of display liquid crystal cell 120 and after inciding and compensating liquid crystal cell 130, because the arragement direction of the second liquid crystal molecule 133 is vertical with the arragement direction of the first liquid crystal molecule 123, the direction of vibration of so incident o light is converted to the direction of vibration of the direction of vibration vertical with its initial vibration direction and incident e light through the effect of the second liquid crystal molecule 133, the direction of vibration of incident e light is converted to the direction of vibration of the direction of vibration vertical with its initial vibration direction and incident o light through the effect of the second liquid crystal molecule 133, it can thus be appreciated that, after the compensation of over-compensation liquid crystal cell 130, incident o light becomes e light, incident e light becomes o light.Compensate liquid crystal cell 130 to be gone back by the phase difference compensation of o light and e light, after over-compensation liquid crystal cell 130, the o light of green glow, blue light, ruddiness and the phase differential of e light are 0, and its direction of vibration is parallel with the polarizing axis direction of optical layers 110.
These other different wave lengths light through display liquid crystal cell 120 after, o light and e light produce phase differential, incide after compensating liquid crystal cell 130, compensate liquid crystal cell 130 and the o light of incidence are become e light, the e light of incidence is become o light, compensate for phase differential, thus the phase differential of o light and e light is made to be 0.Many examples are not done at this.
When compensating the o light of liquid crystal cell 130 and the outgoing of e light and after plane of incidence polaroid 140, because the angle of the polarizing axis of face polaroid 140 and the arragement direction of the second liquid crystal molecule 133 is 45 °, and the polarizing axis of face polaroid 140 is mutually vertical with the polarizing axis of optical layers 110, therefore the direction of vibration of the polarized light of outgoing and the polarizing axis direction of face polaroid 140 vertical, light does not appear thus, so the background color of liquid crystal indicator is black, i.e. black state display, because now liquid crystal indicator is light tight, so black state display brightness is very low.
For the situation applying electric field.The first liquid crystal molecule 123 in display liquid crystal cell 120 can become perpendicular to first substrate 121 surface and erect arrangement under electric field action, so after polarized light incidence, first liquid crystal molecule 123 no longer has phase delay effect to polarized light, and when the polarized light being so parallel to optical layers 110 polarizing axis incides the lower surface compensating liquid crystal cell 130, its direction of vibration is constant.
Incide after compensating liquid crystal cell 130, the angle of the direction of vibration of polarized light and the arragement direction of the second liquid crystal molecule 133 is 45 °, therefore this polarized light can be divided into that direction of vibration is orthogonal, velocity of propagation is different according to the birefringence rule of liquid crystal, refractive index two bundle polarized light, i.e. o light and e light not etc.This o light and e light produce phase differential in compensation liquid crystal cell 130, and for green glow, phase differential is λ 1/ 2, for blue light, phase differential is more than λ 2/ 2, for ruddiness, phase differential is less than λ 3/ 2.There is the deflection of 90 ° in the direction of vibration of polarized light, now the direction of vibration of this polarized light and the polarizing axis direction of face polaroid 140 consistent, light appears, so the background color of liquid crystal indicator is white, i.e. white state display, because the light of now liquid crystal indicator appears, so white state display brightness is very high.
On the basis of technique scheme, by the angle of the polarizing axis of optical layers 110 be 45 °, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 is 0 °, compensate that the arragement direction of the second liquid crystal molecule 133 of liquid crystal cell 130 is 90 °, the angle of the polarizing axis of face polaroid 140 is based on 135 °, optical layers 110, display liquid crystal cell 120, compensation liquid crystal cell 130, face polaroid 140 are together rotated a certain angle, then the liquid crystal indicator formed can also normal display.Such as, by optical layers 110, display liquid crystal cell 120, compensate liquid crystal cell 130, face polaroid 140 and together rotates 30 °, then the angle of the polarizing axis of optical layers 110 is 15 °, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 is-30 °, the arragement direction of the second liquid crystal molecule 133 of compensation liquid crystal cell 130 is 60 °, the angle of the polarizing axis of face polaroid 140 is 105 °.This is no longer going to repeat them for the integrated mode of angle not of the same race, as long as ensure simultaneously: the angle of the polarizing axis of optical layers 110 is 45 ° with the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 on the direction perpendicular to optical layers 110, the angle of the polarizing axis of optical layers 110 is mutually vertical with the angle of the polarizing axis of face polaroid 140, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 with compensate liquid crystal cell 130 the second liquid crystal molecule 133 arragement direction mutually angle that the is vertical and arragement direction of the second liquid crystal molecule 133 and the polarizing axis of face polaroid 140 that compensate liquid crystal cell 130 on the direction perpendicular to optical layers 110, be 45 °.
The contrast of liquid crystal indicator refers to the ratio of its black state display brightness and white state display brightness, this ratio is larger, as black state display brightness be 1, white state display brightness is 254, then illustrate that the contrast of liquid crystal indicator is higher, this ratio is less, as black state display brightness be 90, white state display brightness is 165, then illustrate that the contrast of liquid crystal indicator is lower.A kind of liquid crystal indicator that first embodiment of the invention provides, the liquid crystal indicator not light leak when not added electric field, black state display brightness is very low, after applying an electric field liquid crystal indicator printing opacity, white state display brightness is very high, so the contrast of liquid crystal indicator improves.In addition available liquid crystal display device is positive display mode, the invention belongs to negative display mode, i.e. white state display after added electric field, therefore effectively improves the contrast of liquid crystal indicator.
On the basis of technique scheme, in order to improve the contrast of the present embodiment liquid crystal indicator when high/low temperature, the present embodiment also provides a kind of temperature compensation liquid crystal indicator, as shown in Figure 1 b, is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides.
On the basis of liquid crystal indicator shown in Fig. 1 a, the compensation liquid crystal cell 130 of liquid crystal indicator also comprises: be positioned at first nesa coating 151 of the 3rd substrate 131 near the second liquid crystal molecule 133 side and be positioned at the first end of tetrabasal 132 near the second nesa coating 152, the first nesa coating 151 of the second liquid crystal molecule 133 side and the first end electrical connection of the second nesa coating 152.Compensate liquid crystal cell 130 also to comprise: power supply 150, the positive pole of this power supply 150 is connected with the second end of the first nesa coating 151, the second end of the second nesa coating 152 respectively with negative pole, and this power supply 150 normally works under low temperature limit condition; When power supply 150 normally works, power supply 150 applies voltage to the first nesa coating 151 and the second nesa coating 152.
As mentioned above, when liquid crystal indicator is in the ultimate temperature of low temperature-30 ~-40 DEG C, liquid crystal indicator starts power supply 150 and works, now power supply 150 applies voltage to the second end of the first nesa coating 151 and the second end of the second nesa coating 152, due to the first end of the first nesa coating 151 and the first end short circuit of the second nesa coating 152, therefore the first nesa coating 151 and the second nesa coating 152 produce heat under power supply 150 acts on, achieve heating function, therefore the present embodiment will compensate liquid crystal cell 130 as well heater, start compensation liquid crystal cell 130 to heat when limit low temperature, achieve background color effective compensation when high/low temperature of liquid crystal indicator, and realize high-contrast when high/low temperature.The present embodiment adopts liquid crystal temperature to compensate, compared with changing greatly with the contrast when high/low temperature of liquid crystal indicator in prior art, display comparison degree when effectively improve high/low temperature, and the heating function compensating liquid crystal cell 130 enables liquid crystal indicator apply under extremely cold environment.
A kind of liquid crystal indicator that the present embodiment provides, comprise optical layers 110, display liquid crystal cell 120, the compensation liquid crystal cell 130 that display liquid crystal cell 120 is arranged and face polaroid 140, wherein, the liquid crystal of this compensation liquid crystal cell 130 is same with the liquid crystal phase of display liquid crystal cell 120, arragement direction is different, by display liquid crystal cell 120 with compensate liquid crystal cell 130 with the use of method, during by not powering up and powering up, the black state display/white state display of liquid crystal indicator, improves the display comparison degree of liquid crystal indicator.In addition, when compensating liquid crystal cell 130 and also comprising power supply 150, first nesa coating 151 and the second nesa coating 152, the heating function compensating liquid crystal cell 130 improves the high/low temperature contrast of liquid crystal indicator and has widened low-temperature working temperature, compensate liquid crystal cell 130 simultaneously and solve the problem compensating polaroid and stopped production, reduce cost, solve the problem of prior art.
Shown in figure 2a, it is the schematic diagram of the another kind of liquid crystal indicator that the embodiment of the present invention provides.
On the basis of technique scheme, this optical layers optional is polaroid, and this polaroid is positioned at the bottom of display liquid crystal cell 120, and in order to corresponding with face polaroid 140, also can be described as end polaroid 111, and therefore this optical layers optional is end polaroid 111.Polaroid has fixing polarizing axis, can make not have the natural light of deflection polarity produce polarization and convert polarized light to.
When optical layers is end polaroid 111, incident light is chosen as backlight, and can according to the difference adjustment incident light color of backlight, also the backlight of solid color can be selected, now this liquid crystal indicator is full-transparency type liquid crystal indicator, and incident light can not be surround lighting, and so λ is the wavelength of backlight.Be white light in this optional backlight, its reason is, the o light that the polarized light of white light is divided into and e light are λ/2 at display liquid crystal cell 120 or the phase differential compensated in liquid crystal cell 130, and wherein, λ is wavelengths of white light.
As shown in Figure 2 a, this liquid crystal indicator comprises: end polaroid 111; Be positioned at the display liquid crystal cell 120 on this end polaroid 111, this display liquid crystal cell 120 comprises the first substrate 121 and second substrate 122 that are oppositely arranged, and the first liquid crystal molecule 123 be arranged between first substrate 121 and second substrate 122, the angle of the polarizing axis of this end polaroid 111 and the arragement direction of the first liquid crystal molecule 123 is 45 °; Be positioned at second substrate 122 and deviate from compensation liquid crystal cell 130 on first substrate 121 side, this compensation liquid crystal cell 130 comprises the 3rd substrate 131 and the tetrabasal 132 be oppositely arranged, and the second liquid crystal molecule 133 be arranged between the 3rd substrate 131 and tetrabasal 132, the arragement direction of this second liquid crystal molecule 133 is mutually vertical with the arragement direction of the first liquid crystal molecule 123; Be positioned at tetrabasal 132 and deviate from face polaroid 140 on the 3rd substrate 131 side, the angle of the polarizing axis of face polaroid 140 and the arragement direction of the second liquid crystal molecule 133 is 45 °, and the polarizing axis of this face polaroid 140 is mutually vertical with the polarizing axis of end polaroid 111.In the present embodiment, it is 45 ° with the angle of the polarizing axis of end polaroid 111, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 is 0 °, the arragement direction of the second liquid crystal molecule 133 compensating liquid crystal cell 130 is 90 °, and the angle of the polarizing axis of face polaroid 140 is 135 ° and is described for example.In the present embodiment, compensate liquid crystal cell 130 and instead of compensation polaroid, solve and compensate polaroid stopping production problem, without the need to developing new compensation polaroid.
As mentioned above, the o light be divided into due to backlight and e light are λ/2 at display liquid crystal cell 120 or the phase differential compensated in liquid crystal cell 130, therefore optional, arranging the phase-delay quantity compensating the second liquid crystal molecule 133 in liquid crystal cell 130 is λ/2, and the phase-delay quantity arranging the first liquid crystal molecule 123 in display liquid crystal cell 120 is λ/2.It can thus be appreciated that the phase differential of o light and e light compensate for back by compensating liquid crystal cell 130 in display liquid crystal cell 120.
The principle of work of the liquid crystal indicator that the present embodiment provides when no power is, backlight forms linearly polarized photon after end polaroid 111, the angle of the arragement direction of this linearly polarized light direction of vibration and the first liquid crystal molecule 123 is 45 °, therefore this linearly polarized photon forms o light and the e light of equivalent, and the difference of o light and e light transmission speed in the first liquid crystal molecule 123 result between o light and e light phase differential.The phase-delay quantity of known first liquid crystal molecule 123 and the phase-delay quantity of the second liquid crystal molecule 133 are λ/2, and therefore compensation liquid crystal cell 130 pairs of o light and e light carry out phase compensation.The arragement direction compensating the second liquid crystal molecule 133 of liquid crystal cell 130 is vertical with the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120, then show the polarized light o light and e light that liquid crystal cell 120 transmits to exchange by o light e light when over-compensation liquid crystal cell 130, namely o light is converted to e light, e light is converted to o light, is gone back so phase differential compensates liquid crystal cell 130 compensation.When polarized light arrives tetrabasal 132, the direction of vibration of polarized light is parallel with end polaroid 111.Face polaroid 140 is vertical with the polarizing axis of end polaroid 111, then non-light leak, liquid crystal indicator background color is ater, i.e. black state display, in the black dull situation of extraneous high light and indoor, this full-transparency type liquid crystal indicator is all in the black state display mode of ater when not powering up.
The principle of work of the liquid crystal display cell that the present embodiment provides when being energized is, the arragement direction of the first liquid crystal molecule 123 in display liquid crystal cell 120 becomes perpendicular to first substrate 121 surface and erects arrangement, so show liquid crystal cell 120 and no longer have phase delay to polarized light, the direction of vibration of polarized light arrives the lower surface of the 3rd substrate 131 compensating liquid crystal cell 130 with the direction being parallel to end polaroid 111 polarizing axis, and direction of vibration is constant.Phase-delay quantity due to the second liquid crystal molecule 133 is λ/2, and the arragement direction angle of polarized light and the second liquid crystal molecule 133 is 45 °, and therefore polarized light is divided into o light and the e light of equivalent, and is compensating the phase delay that λ/2 occur in liquid crystal cell 130.The phase differential of known green glow is λ/2, the phase differential of blue light is more than λ/2, and the phase differential of ruddiness is less than λ/2, therefore after over-compensation liquid crystal cell 130, the phase differential of green glow, blue light, ruddiness is 0, and the direction of vibration of polarized light can be similar to upset 90 °, approximate parallel with face polaroid 140, then polarized light is all through face polaroid 140, and the background color of liquid crystal indicator is white, i.e. white state display.In the black dull situation of extraneous high light and indoor, this full-transparency type liquid crystal indicator is all in the white state display mode of white when powering up.
Be the principle of work of full-transparency type liquid crystal indicator as mentioned above, namely be ater when no power, black state display brightness is very low, be white when being energized, white state display brightness is very high, therefore, no matter under extraneous high light or in the black dull situation in indoor, its display comparison degree is all very excellent, and contrast is high.
On the basis of technique scheme, in order to improve the contrast of the present embodiment liquid crystal indicator when high/low temperature, the present embodiment also provides a kind of temperature compensation liquid crystal indicator, as shown in Figure 2 b, is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides.
Based on liquid crystal indicator shown in Fig. 2 a, the compensation liquid crystal cell 130 of this temperature compensation liquid crystal indicator also comprises: be positioned at first nesa coating 151 of the 3rd substrate 131 near the second liquid crystal molecule 133 side and be positioned at the first end of tetrabasal 132 near the second nesa coating 152, the first nesa coating 151 of the second liquid crystal molecule 133 side and the first end electrical connection of the second nesa coating 152.Compensate liquid crystal cell 130 also to comprise: power supply 150, the positive pole of this power supply 150 is connected with the second end of the first nesa coating 151, the second end of the second nesa coating 152 respectively with negative pole, and this power supply 150 normally works under low temperature limit condition; When power supply 150 normally works, power supply 150 applies voltage to the first nesa coating 151 and the second nesa coating 152.The present embodiment like this achieve liquid crystal temperature compensate, contrast can be improved under the extremely low temperature of-30 ~-40, namely at low temperatures, to liquid crystal heating, improve and improve liquid crystal indicator high/low temperature contrast, expanded low-temperature working temperature.
The present embodiment adopts and is showing increase by compensation liquid crystal cell 130 on liquid crystal cell 120, and wherein, the liquid crystal of this compensation liquid crystal cell 130 is same with the liquid crystal phase of display liquid crystal cell 120, and phase-delay quantity arranges identical, and arragement direction is orthogonal.By display liquid crystal cell 120 with compensate liquid crystal cell 130 with the use of method, improve the display comparison degree of liquid crystal indicator, the heating function of this external compensation liquid crystal cell 130 improves the high/low temperature contrast of liquid crystal indicator and has widened low-temperature working temperature, solve the problem that existing compensation polaroid stops production, without the need to researching and developing new compensation polaroid, reducing cost.
Shown in figure 3a, it is the schematic diagram of another liquid crystal indicator that the embodiment of the present invention provides.
Setting this liquid crystal indicator current is translucent liquid crystal display device, so translucent liquid crystal display device has transmission area and echo area, wherein transmission area utilizes the transmitted light of backlight to show, and this backlight is white light, and echo area utilizes the reflected light of surround lighting to show.When being in darker environment, translucent liquid crystal display device utilizes the transmitted light of backlight to show, and when being in bright environment, translucent liquid crystal display device utilizes the reflected light of surround lighting to show.
On the basis of technical scheme shown in Fig. 1 a, optional optical layer is end polaroid 111.When optical layers is end polaroid 111, if the brightness of backlight is better than the brightness of surround lighting, then incident light is chosen as backlight, and when translucent liquid crystal display device incident light is backlight, this backlight must be white light, then lambda1-wavelength λ is corresponding wavelengths of white light.If the brightness of backlight is lower than the brightness of surround lighting, then incident light is chosen as surround lighting, and surround lighting is natural light, and lambda1-wavelength λ is corresponding natural light wavelength wavelength.It can thus be appreciated that the incident light of translucent liquid crystal display device is light stronger in backlight or surround lighting.
As shown in the figure, this liquid crystal indicator comprises: end polaroid 111; Be positioned at the display liquid crystal cell 120 on this end polaroid 111, this display liquid crystal cell 120 comprises the first substrate 121 and second substrate 122 that are oppositely arranged, and the first liquid crystal molecule 123 be arranged between first substrate 121 and second substrate 122, the angle of the polarizing axis of this end polaroid 111 and the arragement direction of the first liquid crystal molecule 123 is 45 °; Be positioned at second substrate 122 and deviate from compensation liquid crystal cell 130 on first substrate 121 side, this compensation liquid crystal cell 130 comprises the 3rd substrate 131 and the tetrabasal 132 be oppositely arranged, and the second liquid crystal molecule 133 be arranged between the 3rd substrate 131 and tetrabasal 132, the arragement direction of this second liquid crystal molecule 133 is mutually vertical with the arragement direction of the first liquid crystal molecule 123; Be positioned at tetrabasal 132 and deviate from face polaroid 140 on the 3rd substrate 131 side, the angle of the polarizing axis of face polaroid 140 and the arragement direction of the second liquid crystal molecule 133 is 45 °, and the polarizing axis of this face polaroid 140 is mutually vertical with the polarizing axis of end polaroid 111.In the present embodiment, it is 45 ° with the angle of the polarizing axis of end polaroid 111, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 is 0 °, the arragement direction of the second liquid crystal molecule 133 compensating liquid crystal cell 130 is 90 °, and the angle of the polarizing axis of face polaroid 140 is 135 ° and is described for example.Compared with the structure of existing translucent liquid crystal display device, the present embodiment, without the need to attaching QWP and HWP blooming on end polaroid 111 and face polaroid 140, thus reduces production cost.
For the display liquid crystal cell 120 in translucent liquid crystal display device, first substrate 121 deviates from multiple pixel regions end polaroid 111 side comprising and is marked off by many mutual data lines arranged in a crossed manner and sweep trace, the echo area 126 that pixel region comprises transmission area 124, step layer 125 and is positioned on step layer 125, namely translucent liquid crystal display device comprises regional transmission and reflector space, principle of work and the full-transparency type liquid crystal indicator of regional transmission are similar, and principle of work and the reflection-type liquid-crystal display device of reflector space are similar.The liquid crystal molecule of corresponding regional transmission and reflector space, to comprise the arragement direction of the first sub-liquid crystal molecule 127 being positioned at transmission area 124 and the sub-liquid crystal molecule 127 of the second sub-liquid crystal molecule 128, first being positioned at echo area 126 identical with the arragement direction of the second sub-liquid crystal molecule 128 for first liquid crystal molecule 123 particularly.
It should be noted that, when incident light is backlight, the transmission area 124 of translucent liquid crystal display device realizes display mode.For transmission area 124 and the first corresponding sub-liquid crystal molecule 127, the first sub-liquid crystal molecule 127 in display liquid crystal cell 120 makes polarized light produce phase differential, the second liquid crystal molecule 133 compensating corresponding transmission area 124 in liquid crystal cell 130 need compensate the phase differential that this polarized light produces, realizing translucent liquid crystal display device thus utilizes the transmitted light of backlight to carry out the object shown, and therefore the phase-delay quantity of the second liquid crystal molecule 133 and the phase-delay quantity of the first sub-liquid crystal molecule 127 are λ/2.Particularly, when polarized light incidence display liquid crystal cell 120, the o light that the birefringence rule of the first sub-liquid crystal molecule 127 makes polarized light be divided into direction of vibration orthogonal and e light, o light and e light produce phase differential, are λ/2; Compensate liquid crystal cell 130 to need to compensate phase differential λ/2 of o light and e light in display liquid crystal cell 120, therefore when the phase-delay quantity of the second liquid crystal molecule 133 and the phase-delay quantity of the first sub-liquid crystal molecule 127 are λ/2, compensation liquid crystal cell 130 realizes the compensation to o light and e light phase difference in display liquid crystal cell 120, when polarized light outgoing compensates liquid crystal cell 130, the phase differential of polarized light is 0.
It should be noted that, step layer 125 comprises transition bed 1251 and metal level 1252, wherein, transition bed 1251 is provided with concaveconvex structure near the side of the second sub-liquid crystal molecule 128, and metal level 1252 is positioned on the concaveconvex structure side of transition bed 1251, it is being that transmission area 124 is in the half perpendicular to the gap, interval on first substrate 121 direction perpendicular to the gap, interval on first substrate 121 direction that step layer 125 is provided for echo area 126.
When incident light is natural light, the echo area 126 of translucent liquid crystal display device realizes display mode.Phase-delay quantity for echo area 126 and the second corresponding sub-liquid crystal molecule 128, second liquid crystal molecule 133 is λ/2, and the phase-delay quantity of the second sub-liquid crystal molecule 128 is λ/4, and wherein, λ is the wavelength of natural light.Because echo area 126 is positioned on step layer 125, and the thickness of step layer 125 is the half that display liquid crystal cell 120 box is thick, and show liquid crystal cell 120 from the liquid crystal molecule compensated in liquid crystal cell 130 except arragement direction is different, all the other parts are all identical, therefore show polarized light in liquid crystal cell 120 and are divided into phase differential that o light and e light produces and should be o light and e light in the half compensating the phase differential produced in liquid crystal cell 130.It can thus be appreciated that the phase-delay quantity of the second sub-liquid crystal molecule 128 should be the half of the phase-delay quantity compensating the second liquid crystal molecule 133 in liquid crystal cell 130 in display liquid crystal cell 120.The phase-delay quantity of known second liquid crystal molecule 133 is λ/2, so the phase-delay quantity of the second sub-liquid crystal molecule 128 is λ/4, in display liquid crystal cell 120, the phase differential of o light and e light is λ/4, compensate o light e light in liquid crystal cell 130 to exchange and phase differential is λ/2, after over-compensation liquid crystal cell 130, phase differential is compensated.
On the basis of technique scheme, the material of transition bed 1251 is optic-solidified adhesive alternatively, its reason is, the curing rate of optic-solidified adhesive is controlled, be convenient to pipelining, and it is high without organic volatile, curing degree in the curing process, thus usually used as between transparency, and bonding between transparency with nontransparent thing.
The principle of work of the liquid crystal indicator that the present embodiment provides when no power is, when incident light is backlight, the linearly polarized photon formed after end polaroid 111 forms o light and e light and has phase differential in transmission area 124.The arragement direction of the second liquid crystal molecule 133 is vertical with the arragement direction of the first sub-liquid crystal molecule 127, then o light and e light can exchange by o light e light when over-compensation liquid crystal cell 130, and phase differential is compensated liquid crystal cell 130 compensation and goes back.When polarized light outgoing tetrabasal 132, the direction of vibration of polarized light is parallel with end polaroid 111.Face polaroid 140 is vertical with the polarizing axis of end polaroid 111, and because transmission area 124 is only a part of region of display liquid crystal cell 120, echo area 126 only can be reflected natural light, and therefore liquid crystal indicator is semi-transparent black morphotype formula.During energising, the arragement direction of the first liquid crystal molecule 123 becomes perpendicular to first substrate 121 surface and erects arrangement, so show liquid crystal cell 120 and no longer have phase delay to polarized light, polarized light is divided into o light and the e light of equivalent in liquid crystal cell 130 compensating, concurrent raw phase delay, it is parallel with face polaroid 140 that the direction of vibration of polarized light occurs to be similar to 90 ° of upsets, then incident polarized light is all through face polaroid 140, and liquid crystal indicator is white morphotype formula.
In sum, the principle of work of the liquid crystal indicator that the present embodiment provides when no power is, when incident light is surround lighting, the linearly polarized photon formed after echo area 126 is reflected is divided into o light and e light and has phase differential.The arragement direction of the second liquid crystal molecule 133 is vertical with the arragement direction of the second sub-liquid crystal molecule 128, then o light and e light can exchange by o light e light when over-compensation liquid crystal cell 130, and phase differential is compensated liquid crystal cell 130 compensation and goes back.Face polaroid 140 is vertical with the polarizing axis of end polaroid 111, and because echo area 126 is only a part of region of display liquid crystal cell 120, transmission is not carried out to natural light in transmission area 124, and therefore liquid crystal indicator is semi-transparent black morphotype formula.During energising, the arragement direction of the first liquid crystal molecule 123 becomes perpendicular to first substrate 121 surface and erects arrangement, so show liquid crystal cell 120 and no longer have phase delay to polarized light, polarized light is divided into o light and the e light of equivalent in liquid crystal cell 130 compensating, concurrent raw phase delay, it is parallel with face polaroid 140 that the direction of vibration of polarized light occurs to be similar to 90 ° of upsets, then incident polarized light is all through face polaroid 140, and liquid crystal indicator is white morphotype formula.
On the basis of such scheme, by face polaroid 140, compensate liquid crystal cell 130, display liquid crystal cell 120, end polaroid 111 angle that all together phase inversion is same, as 45 °, the liquid crystal indicator after rotation also can realize the normal display of translucent liquid crystal display device.In addition, translucent liquid crystal display device is in black dull situation, using backlight as incident light, show white morphotype formula when powering up, when not powering up, show black morphotype formula, under extraneous high light effect, using ambient light as incident light, show white morphotype formula when powering up, show black morphotype formula when not powering up, improve its contrast.
On the basis of technique scheme, in order to improve the contrast of the present embodiment liquid crystal indicator when high/low temperature, the present embodiment also provides a kind of temperature compensation liquid crystal indicator, as shown in Figure 3 b, is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides.
Based on liquid crystal indicator shown in Fig. 3 a, the compensation liquid crystal cell 130 of this temperature compensation liquid crystal indicator also comprises: be positioned at first nesa coating 151 of the 3rd substrate 131 near the second liquid crystal molecule 133 side and be positioned at the first end of tetrabasal 132 near the second nesa coating 152, the first nesa coating 151 of the second liquid crystal molecule 133 side and the first end electrical connection of the second nesa coating 152.Compensate liquid crystal cell 130 also to comprise: power supply 150, the positive pole of this power supply 150 is connected with the second end of the first nesa coating 151, the second end of the second nesa coating 152 respectively with negative pole, and this power supply 150 normally works under low temperature limit condition; When power supply 150 normally works, power supply 150 applies voltage to the first nesa coating 151 and the second nesa coating 152.The present embodiment like this achieve liquid crystal temperature compensate, contrast can be improved under the extremely low temperature of-30 ~-40, namely at low temperatures, to liquid crystal heating, improve and improve liquid crystal indicator high/low temperature contrast, expanded low-temperature working temperature.
The embodiment of the present invention adds one and compensates liquid crystal cell 130, and the phase-delay quantity arranging the phase-delay quantity of the first sub-liquid crystal molecule 127 and the second sub-liquid crystal molecule 128 in display liquid crystal cell 120 is unequal, the polarized light that backlight is formed phase differential after transmission area 124 is compensated by compensation liquid crystal cell 130 is 0, and polarized light phase differential after echo area 126 is compensated by compensation liquid crystal cell 130 that natural light is formed is 0, and the black morphotype formula of this translucent liquid crystal display device and white morphotype formula improve its contrast, compensate the effective compensation of liquid crystal when the heating function of liquid crystal cell 130 also achieves high/low temperature, realize the high-contrast of high/low temperature, avoid the situation of contrast decay in high/low temperature situation, and normally can work under low temperature-30 ~-40 DEG C of ultimate temperatures, expand low-temperature working temperature.
Shown in figure 4a, it is the schematic diagram of another liquid crystal indicator that the embodiment of the present invention provides.Fourth embodiment of the invention provides a kind of liquid crystal indicator, and the technical scheme of this embodiment is applicable to the situation of the contrast improving reflection-type liquid-crystal display device.
Setting this liquid crystal indicator current is reflection-type liquid-crystal display device, and this optical layers optional is reflection horizon 112.When optical layers is reflection horizon 112, reflection horizon 112 can be reflected natural light, to make natural light as the incident light of liquid crystal indicator.
As shown in the figure, this liquid crystal indicator comprises: reflection horizon 112; Be positioned at the display liquid crystal cell 120 on this reflection horizon 112, this display liquid crystal cell 120 comprises the first substrate 121 and second substrate 122 that are oppositely arranged, and the first liquid crystal molecule 123 be arranged between first substrate 121 and second substrate 122, the angle of the polarizing axis in this reflection horizon 112 and the arragement direction of the first liquid crystal molecule 123 is 45 °; Be positioned at second substrate 122 and deviate from compensation liquid crystal cell 130 on first substrate 121 side, this compensation liquid crystal cell 130 comprises the 3rd substrate 131 and the tetrabasal 132 be oppositely arranged, and the second liquid crystal molecule 133 be arranged between the 3rd substrate 131 and tetrabasal 132, the arragement direction of this second liquid crystal molecule 133 is mutually vertical with the arragement direction of the first liquid crystal molecule 123; Be positioned at tetrabasal 132 and deviate from face polaroid 140 on the 3rd substrate 131 side, the angle of the polarizing axis of face polaroid 140 and the arragement direction of the second liquid crystal molecule 133 is 45 °, and the polarizing axis of this face polaroid 140 is mutually vertical with the polarizing axis in reflection horizon 112.In the present embodiment, it is 45 ° with the angle of the polarizing axis in reflection horizon 112, the arragement direction of the first liquid crystal molecule 123 of display liquid crystal cell 120 is 0 °, the arragement direction of the second liquid crystal molecule 133 compensating liquid crystal cell 130 is 90 °, and the angle of the polarizing axis of face polaroid 140 is 135 ° and is described for example.Invention increases and compensate liquid crystal cell 130, do not need carry out phase compensation by compensating polaroid and do not need to increase QWP blooming, therefore correspondingly reduce production cost.
This liquid crystal indicator current is reflection-type liquid-crystal display device, and reflection horizon 112 can be reflected natural light, and to make natural light as the incident light of liquid crystal indicator, therefore lambda1-wavelength λ is corresponding natural light wavelength.Natural light is not the incident light of solid color, but is generally made up of multiple color light, if wavelength is λ 1the o light that is divided into of green glow and the phase differential of e light in display liquid crystal cell 120 be about λ 1/ 2, wavelength X 2blue light phase differential more than λ 2/ 2, wavelength X 3ruddiness phase differential be less than λ 3/ 2.
As mentioned above, when reflected light is propagated in display liquid crystal cell 120, the phase differential of different colours light is different, λ/4 are at the phase-delay quantity of this optional phase-delay quantity and the first liquid crystal molecule 123 that arrange the second liquid crystal molecule 133, so when reflected light is after display liquid crystal cell 120 produces phase differential, compensate liquid crystal cell 130 by a phase difference compensation part for display liquid crystal cell 120, make the direction of vibration of reflected light parallel with the polarizing axis direction of face polaroid 140, reflection-type liquid-crystal display device shows normal white mode.
It should be noted that, be λ/4 at the phase-delay quantity of this also optional first liquid crystal molecule 123, the phase-delay quantity of the second liquid crystal molecule 133 is λ/2, wherein, λ is the wavelength of natural light, makes the phase differential of reflected light in display liquid crystal cell 120 be λ/4, corresponding after the compensation of over-compensation liquid crystal cell 130, phase differential is 0, and the direction of vibration of reflected light is vertical with the polarizing axis direction of face polaroid 140, the normal black pattern of reflection-type liquid-crystal display device display.
For reflection horizon 112, particularly, this reflection horizon 112 comprises: transition bed 113 and metal level 114.Wherein, be positioned at the transition bed 113 that first substrate 121 deviates from second substrate 122 side, its side deviating from first substrate 121 has concaveconvex structure; Metal level 114 is positioned on the concaveconvex structure side of transition bed 113.The principle in reflection horizon 112 and structure similarly to the prior art, do not repeat at this.The material of transition bed 113 is optic-solidified adhesive alternatively.
In sum, the principle of work of the reflection-type liquid-crystal display device that the present embodiment provides when no power is, when incident light is surround lighting, the reflected light formed after the reflection of echo area is divided into o light and e light and has phase differential.The phase-delay quantity of the second liquid crystal molecule 133 is λ/4, the phase-delay quantity of the first liquid crystal molecule 123 is λ/4, then o light and e light can exchange by o light e light when over-compensation liquid crystal cell 130, compensate the phase differential that liquid crystal cell 130 compensates λ/4, therefore liquid crystal indicator is white morphotype formula.Or, the phase-delay quantity of the second liquid crystal molecule 133 is λ/2, the phase-delay quantity of the first liquid crystal molecule 123 is λ/4, then o light and e light can exchange by o light e light when over-compensation liquid crystal cell 130, and compensate liquid crystal cell 130 and gone back by phase difference compensation, therefore liquid crystal indicator is black morphotype formula.
During energising, the arragement direction of the first liquid crystal molecule 123 becomes perpendicular to first substrate 121 surface and erects arrangement, so show liquid crystal cell 120 and no longer have phase delay to polarized light, polarized light is divided into o light and the e light of equivalent in liquid crystal cell 130 compensating, concurrent raw phase delay.When the phase-delay quantity of the second liquid crystal molecule 133 is λ/2, phase differential is λ/2, and it is parallel with face polaroid 140 that the direction of vibration of polarized light occurs to be similar to 90 ° of upsets, then incident polarized light is all through face polaroid 140, and liquid crystal indicator is white morphotype formula.When the phase-delay quantity of the second liquid crystal molecule 133 is λ/4, phase differential is λ/4, and the direction of vibration of polarized light is vertical with face polaroid 140, then reflected light does not appear face polaroid 140, and liquid crystal indicator is black morphotype formula.
On the basis of such scheme, by face polaroid 140, compensate liquid crystal cell 130, display liquid crystal cell 120, end polaroid 111 angle that all together phase inversion is same, as 45 °, the liquid crystal indicator after rotation also can realize the normal display of translucent liquid crystal display device.In addition, the black morphotype formula of reflection-type liquid-crystal display device and the contrast of white morphotype formula also improve and improve the contrast of reflection-type liquid-crystal display device.
On the basis of technique scheme, in order to improve the contrast of the present embodiment liquid crystal indicator when high/low temperature, the present embodiment also provides a kind of temperature compensation liquid crystal indicator, as shown in Figure 4 b, is the schematic diagram of the temperature compensation liquid crystal indicator that the embodiment of the present invention provides.
Based on liquid crystal indicator shown in Fig. 4 a, the compensation liquid crystal cell 130 of this temperature compensation liquid crystal indicator also comprises: be positioned at first nesa coating 151 of the 3rd substrate 131 near the second liquid crystal molecule 133 side and be positioned at the first end of tetrabasal 132 near the second nesa coating 152, the first nesa coating 151 of the second liquid crystal molecule 133 side and the first end electrical connection of the second nesa coating 152.Compensate liquid crystal cell 130 also to comprise: power supply 150, the positive pole of this power supply 150 is connected with the second end of the first nesa coating 151, the second end of the second nesa coating 152 respectively with negative pole, and this power supply 150 normally works under low temperature limit condition; When power supply 150 normally works, power supply 150 applies voltage to the first nesa coating 151 and the second nesa coating 152.The present embodiment like this achieve liquid crystal temperature compensate, contrast can be improved under the extremely low temperature of-30 ~-40, namely at low temperatures, to liquid crystal heating, improve and improve liquid crystal indicator high/low temperature contrast, expanded low-temperature working temperature.
It should be noted that, if when being provided with step layer in the display liquid crystal cell 120 of reflection-type liquid-crystal display device, the phase-delay quantity of the second liquid crystal molecule 133 is λ/2, the phase-delay quantity of the first liquid crystal molecule 123 is λ/4; Also compensation box can be changed to λ/2 and realize normal black pattern.
The reflection-type liquid-crystal display device that the embodiment of the present invention provides, by increasing the second liquid crystal molecule 133 arragement direction compensation liquid crystal cell 130 orthogonal with display liquid crystal cell 120 first liquid crystal molecule 123 arragement direction, and the phase-delay quantity of the second liquid crystal molecule 133 is identical with the phase-delay quantity of the first liquid crystal molecule 123, be λ/2.Reflected light not to be energized white mode often by realization after face polaroid 140.The invention provides the contrast of liquid crystal indicator, improve contrast during high/low temperature, expand low-temperature working temperature.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.

Claims (13)

1. a liquid crystal indicator, is characterized in that, comprising:
Optical layers;
Be positioned at the display liquid crystal cell in described optical layers, described display liquid crystal cell comprises the first substrate and second substrate that are oppositely arranged, and the first liquid crystal molecule be arranged between described first substrate and described second substrate, the angle of the polarizing axis of described optical layers and the arragement direction of described first liquid crystal molecule is 45 °;
Be positioned at described second substrate and deviate from compensation liquid crystal cell on described first substrate side, described compensation liquid crystal cell comprises the 3rd substrate and the tetrabasal be oppositely arranged, and the second liquid crystal molecule be arranged between described 3rd substrate and described tetrabasal, the arragement direction of described second liquid crystal molecule is mutually vertical with the arragement direction of described first liquid crystal molecule;
Be positioned at described tetrabasal and deviate from face polaroid on described 3rd substrate side, the angle of the polarizing axis of described polaroid and the arragement direction of described second liquid crystal molecule is 45 °, and the polarizing axis of described polaroid is mutually vertical with the polarizing axis of described optical layers.
2. liquid crystal indicator according to claim 1, is characterized in that, described optical layers is end polaroid.
3. liquid crystal indicator according to claim 2, is characterized in that, the phase-delay quantity of described second liquid crystal molecule and the phase-delay quantity of described first liquid crystal molecule are λ/2, and wherein, described λ is the wavelength of incident light.
4. liquid crystal indicator according to claim 2, it is characterized in that, described first substrate deviates from multiple pixel regions polaroid side, the described end comprising and is marked off by many mutual data lines arranged in a crossed manner and sweep trace, the echo area that described pixel region comprises transmission area, step layer and is positioned on described step layer.
5. liquid crystal indicator according to claim 4, it is characterized in that, described first liquid crystal molecule comprises the first sub-liquid crystal molecule being positioned at described transmission area and the second sub-liquid crystal molecule being positioned at described echo area, and the arragement direction of described first sub-liquid crystal molecule is identical with the arragement direction of described second sub-liquid crystal molecule.
6. liquid crystal indicator according to claim 5, it is characterized in that, the phase-delay quantity of described second liquid crystal molecule and the phase-delay quantity of described first sub-liquid crystal molecule are λ/2, the phase-delay quantity of described second sub-liquid crystal molecule is λ/4, wherein, described λ is the wavelength of natural light or white light.
7. liquid crystal indicator according to claim 6, it is characterized in that, described step layer comprises transition bed and metal level, wherein, described transition bed is provided with concaveconvex structure near the side of described second sub-liquid crystal molecule, and described metal level is positioned on the described concaveconvex structure side of described transition bed, it is being that described transmission area is in the half perpendicular to the gap, interval on described first substrate direction perpendicular to the gap, interval on described first substrate direction that described step layer is provided for described echo area.
8. liquid crystal indicator according to claim 1, is characterized in that, described optical layers is reflection horizon.
9. liquid crystal indicator according to claim 8, is characterized in that, the phase-delay quantity of described second liquid crystal molecule and the phase-delay quantity of described first liquid crystal molecule are λ/4; Or the phase-delay quantity of described first liquid crystal molecule is λ/4, the phase-delay quantity of described second liquid crystal molecule is λ/2, and wherein, described λ is the wavelength of natural light.
10. liquid crystal indicator according to claim 9, is characterized in that, described reflection horizon comprises:
Be positioned at the transition bed that described first substrate deviates from described second substrate side, the side that described transition bed deviates from described first substrate has concaveconvex structure;
Be positioned at the metal level on the described concaveconvex structure side of described transition bed.
11. liquid crystal indicators according to claim 7 or 10, it is characterized in that, the material of described transition bed is optic-solidified adhesive.
12. liquid crystal indicators according to any one of claim 1-10, it is characterized in that, described compensation liquid crystal cell also comprises: be positioned at first nesa coating of described 3rd substrate near described second liquid crystal molecule side and be positioned at second nesa coating of described tetrabasal near described second liquid crystal molecule side, the first end of described first nesa coating and the first end electrical connection of described second nesa coating.
13. liquid crystal indicators according to claim 12, it is characterized in that, described compensation liquid crystal cell also comprises: power supply, the positive pole of this power supply is connected with the second end of described first nesa coating, the second end of described second nesa coating respectively with negative pole, and this power supply normally works under low temperature limit condition;
When described power supply normally works, described power supply applies voltage to described first nesa coating and described second nesa coating.
CN201510374476.6A 2015-06-30 2015-06-30 A kind of liquid crystal display device Active CN104898339B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510374476.6A CN104898339B (en) 2015-06-30 2015-06-30 A kind of liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510374476.6A CN104898339B (en) 2015-06-30 2015-06-30 A kind of liquid crystal display device

Publications (2)

Publication Number Publication Date
CN104898339A true CN104898339A (en) 2015-09-09
CN104898339B CN104898339B (en) 2018-09-07

Family

ID=54031083

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510374476.6A Active CN104898339B (en) 2015-06-30 2015-06-30 A kind of liquid crystal display device

Country Status (1)

Country Link
CN (1) CN104898339B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107678218A (en) * 2017-06-22 2018-02-09 麒麟电子（深圳）有限公司 Liquid crystal display panel, vertically aligned liquid crystal display device and preparation method thereof
JP2018092046A (en) * 2016-12-05 2018-06-14 Dic株式会社 Liquid crystal electro-optical element
CN109983397A (en) * 2016-11-24 2019-07-05 松下液晶显示器株式会社 Liquid crystal display device
CN111987239A (en) * 2020-08-28 2020-11-24 湖北长江新型显示产业创新中心有限公司 Flexible display panel and display device
CN113945950A (en) * 2021-09-22 2022-01-18 荣耀终端有限公司 Electronic device and depth detection device
WO2022068265A1 (en) * 2020-09-30 2022-04-07 京东方科技集团股份有限公司 Liquid crystal display panel and driving method, and display device
CN115480424A (en) * 2022-10-17 2022-12-16 厦门天马微电子有限公司 Display module and display device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011603A (en) * 1996-11-20 2000-01-04 Samsung Display Devices Co., Ltd. Double super twisted nematic liquid crystal display with improved pre-tilt angles
CN101169534A (en) * 2006-10-24 2008-04-30 比亚迪股份有限公司 Double-layer super-twist nematic liquid crystal display and its manufacture method
CN101320108A (en) * 2007-06-05 2008-12-10 索尼株式会社 Optical compensation member, liquid crystal display device, composition for alignment layer, and alignment layer
CN101825244A (en) * 2009-03-02 2010-09-08 上海天马微电子有限公司 Backlighting component and liquid crystal display module
CN102369477A (en) * 2009-03-31 2012-03-07 夏普株式会社 Liquid crystal display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011603A (en) * 1996-11-20 2000-01-04 Samsung Display Devices Co., Ltd. Double super twisted nematic liquid crystal display with improved pre-tilt angles
CN101169534A (en) * 2006-10-24 2008-04-30 比亚迪股份有限公司 Double-layer super-twist nematic liquid crystal display and its manufacture method
CN101320108A (en) * 2007-06-05 2008-12-10 索尼株式会社 Optical compensation member, liquid crystal display device, composition for alignment layer, and alignment layer
CN101825244A (en) * 2009-03-02 2010-09-08 上海天马微电子有限公司 Backlighting component and liquid crystal display module
CN102369477A (en) * 2009-03-31 2012-03-07 夏普株式会社 Liquid crystal display device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109983397A (en) * 2016-11-24 2019-07-05 松下液晶显示器株式会社 Liquid crystal display device
CN109983397B (en) * 2016-11-24 2022-07-01 松下液晶显示器株式会社 Liquid crystal display device having a plurality of pixel electrodes
JP2018092046A (en) * 2016-12-05 2018-06-14 Dic株式会社 Liquid crystal electro-optical element
JP7035310B2 (en) 2016-12-05 2022-03-15 Dic株式会社 Liquid crystal electro-optic element
CN107678218A (en) * 2017-06-22 2018-02-09 麒麟电子（深圳）有限公司 Liquid crystal display panel, vertically aligned liquid crystal display device and preparation method thereof
CN111987239A (en) * 2020-08-28 2020-11-24 湖北长江新型显示产业创新中心有限公司 Flexible display panel and display device
WO2022068265A1 (en) * 2020-09-30 2022-04-07 京东方科技集团股份有限公司 Liquid crystal display panel and driving method, and display device
US11899304B2 (en) 2020-09-30 2024-02-13 Beijing Boe Display Technology Co., Ltd. Liquid crystal display panel and driving methods therefor, and display apparatus
CN113945950A (en) * 2021-09-22 2022-01-18 荣耀终端有限公司 Electronic device and depth detection device
CN113945950B (en) * 2021-09-22 2023-10-31 荣耀终端有限公司 Electronic equipment and depth detection device
CN115480424A (en) * 2022-10-17 2022-12-16 厦门天马微电子有限公司 Display module and display device

Also Published As

Publication number Publication date
CN104898339B (en) 2018-09-07

Similar Documents

Publication Publication Date Title
CN104898339A (en) Liquid-crystal display device
CN102725682B (en) High speed liquid crystal polarization modulator
CN104035232B (en) A kind of display floater and display device
CN105911771B (en) A kind of LCD assembly and liquid crystal display device
CN208689323U (en) A kind of liquid crystal display die set and display device
Meng et al. Color-switchable liquid crystal smart window with multi-layered light guiding structures
CN108761946A (en) A kind of transparent display panel and transparent display
CN103293770B (en) Display base plate and manufacture method and display panels
CN102012588A (en) Single box thickness transflective blue-phase liquid crystal display
CN104714330A (en) Curved liquid crystal display panel and manufacturing method thereof
CN110673416A (en) Display module, driving method and display device
GB2525809A (en) Liquid crystal display panel and liquid crystal display
CN103353682B (en) Display floater and transparent display
US9897875B2 (en) Transparent display
WO2017020346A1 (en) Transflective blue-phase liquid crystal panel
CN107942574A (en) Liquid crystal display panel and liquid crystal display
Sun et al. Fringe field effect free high-resolution display and photonic devices using deformed helix ferroelectric liquid crystal
CN102955304B (en) A kind of display panels and display device
CN109143665A (en) A kind of display panel and display device
CN104062801B (en) Liquid crystal display device and manufacturing method of liquid crystal display device
CN102944958B (en) Semi-transmissive and semi-reflective display device
Hegde et al. Electrically controlled birefringence colours in deformed helix ferroelectric liquid crystals
WO2016090716A1 (en) Transflective liquid crystal panel and liquid crystal display
CN103207474B (en) Half-transmitting half-reflecting liquid crystal display panel and display utilizing same
GB2557551A (en) Transflective blue-phase liquid crystal display and liquid crystal display module thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant