CN109445193A - A kind of display panel of horizontal electric field type, its production method and display device - Google Patents

A kind of display panel of horizontal electric field type, its production method and display device Download PDF

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Publication number
CN109445193A
CN109445193A CN201810996185.4A CN201810996185A CN109445193A CN 109445193 A CN109445193 A CN 109445193A CN 201810996185 A CN201810996185 A CN 201810996185A CN 109445193 A CN109445193 A CN 109445193A
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CN
China
Prior art keywords
film layer
compensation film
layer
liquid crystal
display panel
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Pending
Application number
CN201810996185.4A
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Chinese (zh)
Inventor
邵喜斌
占红明
王菲菲
林丽锋
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.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology 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.)
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Publication date
Priority claimed from CN201810150987.3A external-priority patent/CN108089377A/en
Priority claimed from CN201810150986.9A external-priority patent/CN108303830A/en
Application filed by BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to PCT/CN2018/106001 priority Critical patent/WO2019157815A1/en
Priority to US16/613,332 priority patent/US11126042B2/en
Publication of CN109445193A publication Critical patent/CN109445193A/en
Pending legal-status Critical Current

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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
    • G02F1/1335—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
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/02—Number of plates being 2

Abstract

The invention discloses a kind of display panel of horizontal electric field type, its production method and display devices, and the first compensation film layer is arranged between opposite substrate and array substrate and compensates the phase delay of axial ray in display panel by non-homogeneous external force.In this way, optical anisotropy is generated in the case where opposite substrate and array substrate are by non-homogeneous external force, when transmitted light polarization state being caused to change, first compensation film layer can compensate for the phase delay that polarised light passes through liquid crystal layer, make light after opposite substrate, array substrate, liquid crystal layer and the first compensation film layer, is restored to original polarization state to a certain extent.In this way, the overwhelming majority in light cannot be projected from display panel, when being in dark-state so as to improve dark-state leakage problem.

Description

A kind of display panel of horizontal electric field type, its production method and display device
Technical field
The present invention relates to field of display technology more particularly to a kind of display panel of horizontal electric field type, its production method and Display device.
Background technique
Existing display device uses liquid crystal (LCD, Liquid crystal display) display panel more.Horizontal alignment Liquid crystal display panel more or less can all lead to display surface when realizing bending display by various modes, or when pressing stress Upper and lower underlay substrate, that is, the opposite substrate and array substrate of plate generate stress, and then underlay substrate is caused to generate optics respectively to different Property, polarised light polarization state when through optically anisotropic underlay substrate changes, will lead to display panel and produce in dark-state Raw different degrees of leakage problem.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of display panel of horizontal electric field type, its production method and displays Device, the original state to alleviate existing liquid crystal are horizontal positioned display panel in dark-state the problem of light leakage.
Therefore, the embodiment of the invention provides a kind of display panels, comprising: the opposite substrate and array base set relatively Plate, the liquid crystal layer between the opposite substrate and the array substrate, and it is located at the opposite substrate and the array The first compensation film layer between substrate；Wherein,
The first compensation film layer is used in the display panel by non-homogeneous external force, compensates axial light The phase delay of line.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended The initial optical axis direction for repaying the optical axis direction and the liquid crystal molecule in the liquid crystal layer of film layer is parallel to each other；
The sum of optical path difference and the optical path difference of the liquid crystal layer of the first compensation film layer are the integral multiple of lambda1-wavelength.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended Repaying the sum of the optical path difference of film layer and the optical path difference of the liquid crystal layer is lambda1-wavelength.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended The initial optical axis direction for repaying the optical axis direction and the liquid crystal molecule in the liquid crystal layer of film layer is mutually perpendicular to；
The optical path difference of the first compensation film layer differs the integral multiple of lambda1-wavelength with the optical path difference of the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended The optical path difference for repaying film layer is equal with the optical path difference of the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended Repaying film layer is that+A compensates film layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended Repay film layer with a thickness of 1 μm~5 μm.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further includes: be located at Color film layer of the opposite substrate towards the liquid crystal layer side, and positioned at the color film layer towards the liquid crystal layer side Spacer layer；
The first compensation film layer is located between the color film layer and the spacer layer as flatness layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further includes: be used for The second compensation film layer of the phase delay of non axial light is compensated, the second compensation film layer is located at the liquid crystal layer and described the The light emission side of one compensation film layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described second is mended Repaying layer is+C compensation film layer or-C compensation film layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described second is mended Repay film layer with a thickness of 0.5 μm~5 μm.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described second is mended It is 92nm~300nm that film layer, which is repaid, in the phase-delay quantity of thickness direction.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended It repays film layer and the second compensation film layer is located at the same side of the liquid crystal layer, and the second compensation film layer is located at described first Compensate the side that film layer deviates from the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described second is mended It repays film layer and is located at side of the opposite substrate towards the liquid crystal layer；Or, the second compensation film layer is located at the opposite base Side of the backboard from the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further includes: be located at Color film layer of the opposite substrate towards the liquid crystal layer side, and positioned at the color film layer towards the liquid crystal layer side Spacer layer；
The second compensation film layer is located between the color film layer and the spacer layer as flatness layer；Described first mends Film layer is repaid between second compensation layer and the spacer material.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, the flatness layer With a thickness of 0.8 μm~2.5 μm.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended Viscosity when repaying film layer as the flatness layer before curing is 1.0mPas~15mPas；The second compensation film layer is made Viscosity when for the flatness layer before curing is 1.5mPas~20mPas.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended It repays film layer and the second compensation film layer is located at the not ipsilateral of the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended It repays film layer and is located at side of the array substrate towards the liquid crystal layer；
The second compensation film layer is located at side of the opposite substrate towards the liquid crystal layer；Or, second compensation Film layer is located at the side that the opposite substrate deviates from the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described second is mended Film layer is repaid as upper polarizer and is located at the side that the opposite substrate deviates from the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described second is mended It repays film layer and is located at side of the opposite substrate towards the liquid crystal layer, and the second compensation film layer has and is convex to the liquid crystal Multiple spacer material structures of layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first is mended Repaying film layer and the second compensation film layer is liquid crystal film.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further includes: be located at The first compensation film layer far from the liquid crystal layer side and with the adjacent both alignment layers of the first compensation film layer.
On the other hand, the embodiment of the invention also provides a kind of display devices, comprising: provided in an embodiment of the present invention above-mentioned The display panel of horizontal electric field type.
On the other hand, the embodiment of the invention also provides a kind of production method of the display panel of above-mentioned horizontal electric field type, It include: that an opposite substrate and array basal plate, the filling liquid crystal layer between the opposite substrate and the array substrate are provided；Also Include:
The first compensation film layer is formed on the opposite substrate or the array substrate；
The first compensation film layer is formed to specifically include:
Liquid of the coating comprising the first compensation film material, carries out pre-firing processes to the liquid, formation has certain The first compensation film layer of alignment direction.
In one possible implementation, in above-mentioned production method provided in an embodiment of the present invention, further includes:
Second for compensating the phase delay of non axial light is formed on the opposite substrate or the array substrate Compensate film layer；
The second compensation film layer is formed to specifically include:
Liquid of the coating comprising the second compensation film material, carries out pre-firing processes to the liquid, forms described second Compensate film layer.
In one possible implementation, in above-mentioned production method provided in an embodiment of the present invention, to the liquid Body carries out after pre-firing processes, further includes:
It uses wavelength for 365nm and light intensity is 0.5mw/cm2~600mw/cm2Ultraviolet light, to the liquid carry out duration For the irradiation of 30s~60min.
In one possible implementation, in above-mentioned production method provided in an embodiment of the present invention, to the liquid Before body is irradiated using the ultraviolet light of 365nm, further includes:
It uses wavelength for 254nm and light intensity is 0.5mw/cm2~600mw/cm2Ultraviolet light, to the liquid carry out duration For the irradiation of 30s~60min.
The beneficial effect of the embodiment of the present invention includes:
Display panel, its production method and the display device of a kind of horizontal electric field type provided in an embodiment of the present invention, right To the first compensation of setting film layer between substrate and array substrate, the first compensation film layer is in display panel by non-homogeneous external force In the case where, compensate the phase delay of axial ray.In this way, the case where opposite substrate and array substrate are by non-homogeneous external force Lower generation optical anisotropy, when transmitted light polarization state being caused to change, the first compensation film layer can compensate for polarised light warp The phase delay for crossing liquid crystal layer makes light after opposite substrate, array substrate, liquid crystal layer and the first compensation film layer, certain Original polarization state is restored in degree.In this way, the overwhelming majority in light cannot be from display panel when being in dark-state It projects, so as to improve dark-state leakage problem.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of liquid crystal display panel in the related technology；
Fig. 2 is the schematic diagram of the polarization state through light in poincare sphere of each layer of liquid crystal display panel in the related technology；
Fig. 3 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 4 is another structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 5 a and Fig. 5 b are respectively the inclined in poincare sphere through light of each layer of display panel provided in an embodiment of the present invention A kind of schematic diagram of vibration state；
Fig. 6 a and Fig. 6 b are respectively the inclined in poincare sphere through light of each layer of display panel provided in an embodiment of the present invention Another schematic diagram of vibration state；
Fig. 7 is a kind of structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Fig. 8 is another structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Fig. 9 is another structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Figure 10 is another structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Figure 11 is another structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Figure 12 is another structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Figure 13 is another structural schematic diagram when display panel provided in an embodiment of the present invention has the second compensation film layer；
Figure 14 is the another of the polarization state through light in poincare sphere of each layer of display panel provided in an embodiment of the present invention A kind of schematic diagram.
Specific embodiment
Plane conversion (IPS, In-Plane Switching) and Senior super dimension field switch technology (ADS, Advanced Super Dimension Switch) mode is the common display pattern of existing liquid crystal display panel with wide visual angle, it is also referred to as horizontal The liquid crystal display panel of electric field type.
It is specifically described by taking ADS type LCD as an example, as shown in Figure 1, ADS type LCD includes opposite substrate 104 and array Substrate 102 and the liquid crystal layer 103 between opposite substrate 104 and array substrate 102.In order to guarantee normally to show, right The orthogonal upper polarizer 105 of light transmission axis and lower polarizing film are respectively arranged with to the outside of substrate 104 and array substrate 102 101.Since liquid crystal cannot shine, liquid crystal display panel also needs to be arranged backlight (Fig. 1 is not shown).The light that backlight issues Successively projected via lower polarizing film 101, array substrate 102, liquid crystal layer 103, opposite substrate 104 and upper polarizer 105.
The original state of liquid crystal is horizontal positioned in ADS type LCD, and in the case where voltage is not added, liquid crystal does not have light There is distortion action, then, the polarization direction of the light after liquid crystal is vertical through axis direction with the light of upper polarizer 105, then Light cannot penetrate, and show dark picture, and ADS type LCD is in dark-state at this time；In alive situation, liquid crystal molecule rotation from And light is distorted, the polarization direction of light is changed in this way, light is projected by upper polarizer 105, to show Bright picture, ADS type LCD is in illuminated state at this time.
Since the underlay substrate of array substrate 102 and opposite substrate 104 generally mostly uses glass to be formed, and glass is for light Line has birefringent effect.In the case that when display panel bends or presses stress, glass is by non-homogeneous external force, from Isotropic medium becomes optical anisotropy medium, and glass can be because of stress condition difference, and it is two-fold to generate stress heterogeneous It penetrates, the polarization of light state penetrated is caused to change.The polarization that the polarization state and glass substrate that upper glass substrate generates generate The phase of state is equal in magnitude, contrary, and in the case where no liquid crystal layer 103, the polarization state that upper and lower substrate of glass generates is It can offset, but due to the presence of liquid crystal layer 103, optical path difference can be amplified, the polarization state for causing upper and lower substrate of glass to generate It can not cancel out each other.
Specifically, the light that backlight issues when dark-state is in the polarization state by each component of display panel in poincare sphere State is as shown in Figure 2.A polarization state is a little represented in poincare sphere, azimuth indicates the longitude in poincare sphere, ellipticity table Show latitude.Therefore, the point on poincare sphere equator indicates linearly polarized light, and upper and lower pole respectively corresponds right-circularly polarized light and left-handed circle Polarised light, on spherical surface other it is each put corresponding elliptically polarized lights, wherein episphere is that right-handed elliptical polarization light, lower semisphere are left-handed ellipse Circularly polarized light.What is indicated on spherical surface is complete polarized light, and what the centre of sphere indicated is natural light, and what other points indicated in sphere is part Polarised light.
Polarization state of the light that backlight issues when by liquid crystal display panel each process in poincare sphere is respectively as follows: After lower polarizing film 101, light becomes linearly polarized light, is now placed in and a little 1. locates；After the glass by generating unequal stress, The polarization state of light changes, and becomes elliptically polarized light by linearly polarized light, is now placed in and 2. locates；Optical axis is not parallel with liquid crystal optic axis Elliptically polarized light, will receive the modulation of liquid crystal, occur the variation of polarization state, 3. polarization state, which is located at, to be located；Undergo generation non-again When after the glass of the homogeneous state of stress, 4. polarization state, which is moved to, to be located, will not be 1. overlapped, then some light will appear, so as to cause There is dark-state leakage problem in ADS type LCD.And TN type LCD and VA type LCD is arranged not due to the initial orientation of liquid crystal molecule It together, therefore is not in dark-state leakage problem.
Based on this, the embodiment of the invention provides a kind of display panel, its production method and display devices, existing to alleviate The liquid crystal display panel of some horizontal electric field types is in dark-state the problem of light leakage.In order to make the purpose of the present invention, technical solution and Advantage is clearer, and the present invention will be describe below in further detail with reference to the accompanying drawings, it is clear that described embodiment is only A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art All other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The shapes and sizes of each component do not reflect actual proportions in attached drawing, and purpose is schematically illustrate the content of present invention.
A kind of display panel of horizontal electric field type provided in an embodiment of the present invention, as shown in Figure 3 and Figure 4, comprising: it is opposite and The opposite substrate 100 and array substrate 200 set, the liquid crystal layer 300 between opposite substrate 100 and array substrate 200, and The first compensation film layer 400 between opposite substrate 100 and array substrate 200；Wherein,
First compensation film layer 400 is used in display panel by non-homogeneous external force, compensates axial ray Phase delay.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, in opposite substrate 100 and array substrate 200 Between setting first compensation film layer 400, this first compensation film layer 400 in display panel by non-homogeneous external force, Compensate the phase delay of axial ray.In this way, in the case where opposite substrate 100 and array substrate 200 are by non-homogeneous external force Optical anisotropy is generated, when transmitted light polarization state being caused to change, the first compensation film layer 400 can compensate for polarised light warp The phase delay for crossing liquid crystal layer 300 makes light by opposite substrate 100, array substrate 200, liquid crystal layer 300 and the first compensation film After layer 400, it is restored to original polarization state to a certain extent.In this way, the overwhelming majority in light is not when being in dark-state It can be projected from display panel, so as to improve dark-state leakage problem.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, first compensation film layer 400 optical axis direction with The initial optical axis direction of liquid crystal molecule in liquid crystal layer 300 can be parallel to each other；Also, the optical path difference of the first compensation film layer 400 It is the integral multiple of lambda1-wavelength with the sum of the optical path difference of liquid crystal layer 300.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, this first compensation film layer 400 optical path difference with The sum of optical path difference of liquid crystal layer 300 is the integral multiple of lambda1-wavelength, and the liquid crystal molecule in optical axis direction and liquid crystal layer 300 When initial optical axis direction is parallel to each other, light is generated in the case where opposite substrate 100 and array substrate 200 are by non-homogeneous external force Anisotropy is learned, when transmitted light polarization state being caused to change, the first compensation film layer 400 can compensate for polarised light by liquid crystal The phase delay of layer 300 makes light by opposite substrate 100, array substrate 200, liquid crystal layer 300 and the first compensation film layer 400 Afterwards, total phase delay is close or equal to the integral multiple of lambda1-wavelength, and then is restored to the light to a certain extent Original polarization state.In this way, the overwhelming majority in light cannot be penetrated from the display panel of horizontal alignment when being in dark-state Out, so as to improve dark-state leakage problem.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, the optical path difference and liquid of the first compensation film layer 400 The sum of optical path difference of crystal layer 300 can be the integral multiple of lambda1-wavelength, to guarantee polarised light by the generation of liquid crystal layer 300 Optical path difference, near the polarization state before may return to after the optical path difference compensation of the first compensation film layer 400.Wherein incident light Wavelength can be visible wavelength range, and lambda1-wavelength may be the common monochromatic wavelength of display panel, such as feux rouges Wave-length coverage, green wavelength, blue wavelength range etc., lambda1-wavelength can also be standard wave length, such as 550nm, This is without limitation.
Also, the sum of optical path difference of the optical path difference of the first compensation layer 400 and liquid crystal layer 300 actually can and not in strict accordance with The integral multiple of lambda1-wavelength, there may be certain margins of tolerance, such as the margin of tolerance is within ± 20%, in this hair Within bright protection scope.Also, the optical axis direction of the first compensation film layer 400 is initial with the liquid crystal molecule in liquid crystal layer 300 Optical axis direction, which is parallel to each other, is also likely to be present certain margin of tolerance, such as the margin of tolerance is within ± 11 °, in the present invention Protection scope in.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the optical path difference and liquid of the first compensation film layer 400 The sum of optical path difference of crystal layer 300 is the integral multiple of lambda1-wavelength, and wherein integral multiple can be 1, i.e., the first compensation film layer 400 Optical path difference can be equal with the optical path difference of liquid crystal layer 300.The thickness of the first compensation film layer 400 can be reduced as far as possible in this way, Be conducive to the whole thinning of the first compensation film layer 400 of production and mould group.
For example, the optical path difference of the first compensation film layer 400 is λ -340nm, the optical path difference of liquid crystal layer 300 is 340nm.At this point, As shown in Figure 5 a, polarization state of the light that backlight issues when dark-state when by display panel each process point in poincare sphere Not are as follows: after lower polarizing film, light becomes linearly polarized light, is now placed in and a little 1. locates；In the array by generating unequal stress After substrate 200, the polarization state of light changes, and becomes elliptically polarized light by linearly polarized light, is now placed in and 2. locates；Optical axis not with liquid The parallel elliptically polarized light of brilliant optical axis, will receive the modulation of liquid crystal, and the variation of polarization state occurs, 3. polarization state, which is located at, to be located；It is logical After the sum of optical path difference of optical path difference and liquid crystal layer 300 is crossed as the first compensation layer 400 of λ, the previous light additionally generated is compensated Path difference, 4. compensated polarization state, which is located at, to be located；When undergone after the opposite substrate 100 for generating unequal stress again, polarization state is mobile To 5. locating, just be 1. overlapped, then generate optics in the case that opposite substrate 100 and array substrate 200 are by non-homogeneous external force Influence caused by anisotropy is capped, and will not generate dark-state leakage problem.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the optical path difference and liquid of the first compensation film layer 400 The sum of optical path difference of crystal layer 300 is integral multiple lambda1-wavelength, for example, the optical path difference of the first compensation film layer 400 can be 2* λ- 340nm, the optical path difference of liquid crystal layer 300 can be 340nm.At this point, as shown in Figure 5 b, the light that backlight issues when dark-state is passing through Polarization state when crossing display panel each process in poincare sphere is respectively as follows: after lower polarizing film, and light becomes linearly polarized light, this When be located at point 1. locate；After the array substrate 200 by generating unequal stress, the polarization state of light changes, by linear polarization Light becomes elliptically polarized light, is now placed in and 2. locates；The optical axis not elliptically polarized light parallel with liquid crystal optic axis, will receive the tune of liquid crystal The variation of polarization state occurs for system, 3. polarization state, which is located at, to be located；The of the sum of optical path difference by optical path difference and liquid crystal layer 300 2* λ After one compensation layer 400, the previous optical path difference compensation back wall additionally generated is rotated a circle (one week is λ) around the centre of sphere, is mended 4. polarization state after repaying, which is located at, to be located；Undergo again generate unequal stress opposite substrate 100 after when, 5. polarization state, which is moved to, to be located, Just be 1. overlapped, then generate optical anisotropy in the case that opposite substrate 100 and array substrate 200 are by non-homogeneous external force Caused by influence to be capped, dark-state leakage problem will not be generated.
Alternatively, optionally, in above-mentioned display panel provided in an embodiment of the present invention, the optical axis of the first compensation film layer 400 Direction and the initial optical axis direction of the liquid crystal molecule in liquid crystal layer 300 can be mutually perpendicular to；Also, the first compensation film layer 400 Phase difference differs the integral multiple of lambda1-wavelength with the phase difference of liquid crystal layer 300.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, this first compensation film layer 400 phase difference with The integral multiple of the phase difference difference lambda1-wavelength of liquid crystal layer 300, and the liquid crystal molecule in optical axis direction and liquid crystal layer 300 is first When beginning optical axis direction is mutually perpendicular to, optics is generated in the case where opposite substrate 100 and array substrate 200 are by non-homogeneous external force Anisotropy, when transmitted light polarization state being caused to change, the first compensation film layer 400 can offset polarised light by liquid crystal layer 300 phase delay makes light after opposite substrate 100, array substrate 200, liquid crystal layer 300 and the first compensation film layer 400, Its total phase delay is close or equal to the integral multiple of lambda1-wavelength, and then is restored to the light to a certain extent originally Polarization state.In this way, the overwhelming majority in light cannot be projected from display panel when being in dark-state, so as to improve Dark-state leakage problem.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, the phase difference and liquid of the first compensation film layer 400 The phase difference of crystal layer 300 can differ the integral multiple of lambda1-wavelength, to guarantee polarised light in the phase generated by liquid crystal layer 300 Potential difference, near the polarization state before may return to after the phase difference of the first compensation film layer 400 is offset and compensated.Wherein enter Penetrating optical wavelength can be visible wavelength range, and lambda1-wavelength may be the common monochromatic wavelength of display panel, such as Red wavelength range, green wavelength, blue wavelength range etc., lambda1-wavelength can also be standard wave length, such as 550nm, it is not limited here.
Also, differing between the phase difference of the first compensation layer 400 and the phase difference of liquid crystal layer 300 actually can be not tight Lattice are according to the integral multiple of lambda1-wavelength, and there may be certain margins of tolerance, such as the margin of tolerance is within ± 20%, Within protection scope of the present invention.Also, the optical axis direction and the liquid crystal molecule in liquid crystal layer 300 of the first compensation film layer 400 Initial optical axis direction be mutually perpendicular to be also likely to be present certain margin of tolerance, such as the margin of tolerance is to exist within ± 11 ° In protection scope of the present invention.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the phase difference and liquid of the first compensation film layer 400 The integral multiple of the phase difference difference lambda1-wavelength of crystal layer 300, wherein integral multiple can be zero, i.e., the first compensation film layer 400 Phase difference can be equal with the phase difference of liquid crystal layer 300.The thickness of the first compensation film layer 400 can be reduced as far as possible in this way, Be conducive to the whole thinning of the first compensation film layer 400 of production and mould group.
For example, the phase difference of the first compensation film layer 400 and the phase difference of liquid crystal layer 300 are 350nm.At this point, such as Fig. 6 a It is shown, the polarization state when light that backlight issues when dark-state passes through display panel each process in poincare sphere be respectively as follows: through After lower polarizing film, light becomes linearly polarized light, is now placed in and a little 1. locates；In the array substrate 200 by generating unequal stress Afterwards, the polarization state of light changes, and becomes elliptically polarized light by linearly polarized light, is now placed in and 2. locates；Optical axis not with liquid crystal optic axis Parallel elliptically polarized light will receive the modulation of liquid crystal, and the variation of polarization state occurs, 3. polarization state, which is located at, to be located；Pass through phase The previous phase difference additionally generated is offset, is mended with after consistent first compensation layer 400 of phase difference of liquid crystal layer 300 by difference 4. polarization state after repaying, which is located at, to be located；Undergo again generate unequal stress opposite substrate 100 after when, 5. polarization state, which is moved to, to be located, Just be 1. overlapped, then generate optical anisotropy in the case that opposite substrate 100 and array substrate 200 are by non-homogeneous external force Caused by influence to be capped, dark-state leakage problem will not be generated.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the phase difference and liquid of the first compensation film layer 400 The integral multiple of the phase difference difference lambda1-wavelength of crystal layer 300, for example, the phase difference of liquid crystal layer 300 can when integral multiple is one times Think 320nm, the phase difference of the first compensation film layer 400 can be 320nm+ λ.At this point, as shown in Figure 6 b, backlight is sent out when dark-state Polarization state of the light out when by display panel each process in poincare sphere is respectively as follows: after lower polarizing film, light at For linearly polarized light, it is now placed in and a little 1. locates；After the array substrate 200 by generating unequal stress, the polarization state of light occurs Change, elliptically polarized light is become by linearly polarized light, is now placed in and 2. locates；The optical axis not elliptically polarized light parallel with liquid crystal optic axis, The variation of polarization state occurs for the modulation that will receive liquid crystal, 3. polarization state, which is located at, to be located；Pass through the phase of phase difference and liquid crystal layer 300 After potential difference differs the first compensation layer 400 of λ, the previous phase difference additionally generated is offset into back wall and is rotated a circle around the centre of sphere (one week is λ), 4. compensated polarization state, which is located at, to be located；Undergo again generate unequal stress opposite substrate 100 after when, polarization 5. state, which is moved to, to be located, just be 1. overlapped, then produced in the case that opposite substrate 100 and array substrate 200 are by non-homogeneous external force It influences to be capped caused by raw optical anisotropy, dark-state leakage problem will not be generated.
It is worth noting that, optical path difference and phase difference signified in above-mentioned display panel provided in an embodiment of the present invention Relationship are as follows: the optical path difference/π of phase difference=λ/2.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the thickness of the first compensation film layer 400 is generally controlled System is in the range of 1 μm~5 μm.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the first compensation film layer 400 can compensate for+A Film layer, also known as+A plate meet nx1 > ny1=nz1, wherein nx1 is the refraction in the X-direction in the+A compensation film level Rate, the refractive index in Y direction ny1 vertical with X-axis in the+A compensation film level, nz1 are to compensate thicknesses of layers in the+A Refractive index on direction.
Specifically ,+A compensates phase delay R in the face of film layer+A=(nx-ny) * d1, wherein d1 is the thickness that+A compensates film layer Degree.Phase delay R in the face of liquid crystal layer 300LC=(ne-n0) * d2, wherein d2 is the thickness of liquid crystal layer 300, neFor non-ordinary light Refractive index, n0For the refractive index of ordinary light.By adjusting the relevant parameter of+A compensation film layer, so that R+A-RLC=m* λ, m=0, ± 1, ± 2 ..., i.e. satisfaction (nx1-ny1) * d1=(ne-n0)*d2+m*λ.In this way+A compensation film layer optical axis direction be in When the long axis direction of the liquid crystal molecule of original state is parallel to each other, light can be compensated through in face caused by liquid crystal layer 300 Phase delay.The optical axis direction of above-mentioned+A compensation film layer is the refraction of o light and e light that light generates after+A compensates film layer The direction that direction coincides.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 3, the first compensation film layer 400 can To be located at side of the array substrate 200 towards liquid crystal layer 300；Alternatively, as shown in figure 4, the first compensation film layer 400 can also be located at Side of the opposite substrate 100 towards liquid crystal layer 300, it is not limited here.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 4, can also include: be located at pair Color film layer 110 to substrate 100 towards 300 side of liquid crystal layer, and positioned at color film layer 110 towards liquid crystal layer 300 side every Underbed layer 130；First compensation film layer 400 can be multiplexed to be located between color film layer 110 and spacer layer 130 as flatness layer 120.
Specifically, when the first compensation film layer 400 is located at opposite substrate 100 towards 300 side of liquid crystal layer, the first compensation film 400 multiplexing of layer is used as flatness layer 120, can simplify the complexity of process flow, is conducive to save cost of manufacture.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, in order to guarantee multiplexing as flatness layer 120 First compensation film layer 400 can play the role of planarization, that is, fill and lead up the uneven of color 110 upper surface of film layer, mend to first Repay film layer 400 thickness have it is required, it is desirable that its thickness needs in 0.8 μm~2.5 μ ms, flat to guarantee to play Change effect.Also, have to the viscosity of the first compensation film layer 400 before curing required, it is desirable that its viscosity is needed in 1.0mPas Within the scope of~15mPas, to guarantee the mobility of the first compensation film layer 400, it can fill into rough gap to rise It is acted on to planarization.
Specifically, since the light absorption axis of the upper polarizer of display panel and lower polarizing film is mutually perpendicular to, from axial direction When (axial direction refers to the direction perpendicular to display screen) watches the display panel, the light of upper polarizer 22 and lower polarizing film is inhaled It is orthogonal for receiving axis；But it is i.e. off-axis from non axial direction (non axial direction refers to not perpendicular to the direction of display screen) When watching the display panel under the state of big visual angle, since visual angle increases, the light absorption axis of originally orthogonal polarizing film can occur partially Move, i.e., the light absorption axis of upper polarizer and lower polarizing film is not orthogonal, will lead to so non axial angular field of view it is small, produce The problems such as raw light leakage, finally influence viewing effect.
In order to improve the leakage problem of above-mentioned off-axis big visual angle state, optionally, provided in an embodiment of the present invention above-mentioned It can also include: the second compensation for compensating the phase delay of non axial light as shown in Fig. 7 to Figure 13 in display panel Film layer 500, the second compensation film layer 500 are located at the light emission side of liquid crystal layer 300 and the first compensation film layer 400.If array substrate 200 is made For incident side, opposite substrate 100 is used as light emission side, then the second compensation film layer 500 is relative to liquid crystal layer 300 and the first compensation film layer 400 pass through the second compensation after that is, light can first pass through liquid crystal layer 300 and the first compensation film layer 400 closer to opposite substrate 100 Film layer 500.Significantly, since axial direction refers to that non axial direction, which refers to, does not hang down perpendicular to the direction of display screen Directly in the direction of display screen, therefore, non axial light is referred to not perpendicular to the light of display screen direction.
Specifically, as shown in figure 14, under off-axis big visual angle, the light that backlight issues when dark-state is passing through display panel When polarization state in poincare sphere each process be respectively as follows: and pass through lower polarizing film, array substrate 200 and liquid crystal layer 300 in light When, polarization state can occur centainly to change, and be now placed in and a little 1. locate；After the first compensation film layer 400, polarization state can be sent out 2. raw large change is located positioned at point；Improved at this time by the second compensation film layer 500, light passes through the second compensation film layer 500 Afterwards, 3. polarization state, which can be moved to, a little locates；The point is 3. almost orthogonal with the light absorption axis direction of upper polarizer, projects light meeting at this time It is absorbed completely by upper polarizer, the dark-state leakage problem under off-axis big visual angle state will not be generated.Therefore, the second compensation film layer 500 and first compensate the mutual cooperation of film layer 400, may be implemented to compensate the polarization state of non axial emergent ray, to reach Improve the dark-state light leakage purpose at non axial visual angle.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the second compensation film layer 500 can compensate for+C Film layer, also known as+C plate meet nz2 > ny2=nx2, wherein nx2 is the refraction in the X-direction in the optical compensation film surface Rate, the refractive index in Y direction ny2 vertical with X-axis in the optical compensation film surface, nz2 are in the optical compensation film thickness Refractive index on direction；Or, the second compensation film layer 500 or-C compensation film layer, also known as-C plate, meet nz3 < ny3= Nx3, wherein nx3 is refractive index in the X-direction in the optical compensation film surface, and ny3 is in the optical compensation film surface and X Refractive index in the vertical Y direction of axis, nz3 are the refractive index in the optical compensation film thickness direction.
Specifically ,+C compensation film layer thickness phase delay Rth=[(nx2+ny2)/2-nz2] × d3, wherein d3 is+C Compensate the thickness of film layer.Since+C compensation film layer meets nz2 > ny2=nx2, then phase delay R+C=0 in its face, i.e.+C are mended Repaying film layer phase delay in face is zero, there is phase delay in a thickness direction.The thickness phase delay Rth=of C compensation film layer [(nx3+ny3)/2-nz3] × d4, wherein d4 is the-thickness of C compensation film layer.Since-C compensation film layer meets nz3 < ny3= Nx3, then phase delay R+C=0 in its face, i.e. ,-C compensation film layer phase delay in face is zero, there is phase in a thickness direction Delay.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the thickness of the second compensation film layer 500 is generally controlled System is in the range of 0.5 μm~5 μm.
Specifically, since the second compensation film layer 500 is without phase delay in face, it, can be with to its optical axis direction no requirement (NR) It is any direction orientation.Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the second compensation film layer 500 is in thickness The phase-delay quantity Rth in degree direction can choose 92nm~300nm.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in Figure 7 and Figure 8, the first compensation film layer 400 and second compensate the same side that film layer 500 can be located at liquid crystal layer 300, and the second compensation film layer 500 is located at the first compensation film Layer 400 deviates from the side of liquid crystal layer 300.
Specifically, the first compensation film layer 400 and the second compensation film layer 500 are arranged at opposite substrate 100 towards liquid crystal The side of layer 300, i.e., the first compensation film layer 400 and the second compensation film layer 500 are both formed on opposite substrate 100, are conducive to make Make process.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in fig. 7, the second compensation film layer 500 can To be located at side of the opposite substrate 100 towards liquid crystal layer 300, that is, it is located at the inside of opposite substrate 100；Or, as shown in figure 8, Two compensation film layers 500 can also be located at the side that opposite substrate 100 deviates from liquid crystal layer 300, i.e., positioned at the outer of opposite substrate 100 Side.Also, the second compensation film layer 500 is arranged in the outside of opposite substrate 100, is had in this way for final emergent light more obvious Compensation effect, have the function that optimize visual angle.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in fig. 7, can also include: be located at pair Color film layer 110 to substrate 100 towards 300 side of liquid crystal layer, and positioned at color film layer 110 towards liquid crystal layer 300 side every Underbed layer 130；Second compensation film layer 500 can be multiplexed to be located between color film layer 110 and spacer layer 130 as flatness layer 120； First compensation film layer 400 is between the second compensation layer 500 and spacer layer 130.
Specifically, when the second compensation film layer 500 is located at the inside of opposite substrate 100, the second compensation multiplexing of film layer 500 is made For flatness layer 120, the complexity of process flow can simplify, be conducive to save cost of manufacture.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, in order to guarantee multiplexing as flatness layer 120 Second compensation film layer 500 can play the role of planarization, that is, fill and lead up the uneven of color 110 upper surface of film layer, mend to second Repay film layer 500 thickness have it is required, it is desirable that its thickness needs in 0.8 μm~2.5 μ ms, flat to guarantee to play Change effect.Also, have to the viscosity of the second compensation film layer 500 before curing required, it is desirable that its viscosity is needed in 1.5mPas Within the scope of~20mPas, to guarantee the mobility of the second compensation film layer 500, it can fill into rough gap to rise It is acted on to planarization.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 8, the second compensation film layer 500 can To be located at the side that opposite substrate 100 deviates from liquid crystal layer 300 as upper polarizer, with the complexity of simplification of flowsheet, favorably In saving cost of manufacture.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in Figure 9 and Figure 10, the first compensation film Layer 400 and the second compensation film layer 500 can also be located at the not ipsilateral of liquid crystal layer 300.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in Figure 9 and Figure 10, the first compensation film Layer 400 can be located at side of the array substrate 200 towards liquid crystal layer 300；
As shown in figure 9, the second compensation film layer 500 can be located at side of the opposite substrate 100 towards liquid crystal layer 300, ascend the throne In the inside of opposite substrate 100；Or, as shown in Figure 10, the second compensation film layer 500 can also be located at opposite substrate 100 and deviate from liquid The side of crystal layer 300 is located at the outside of opposite substrate 100.The outer of opposite substrate 100 is arranged in second compensation film layer 500 There is more apparent compensation effect in side for final emergent light in this way, has the function that optimize visual angle.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in Figure 10, the second compensation film layer 500 Can be used as upper polarizer and be located at opposite substrate 100 has away from the side of liquid crystal layer 300 with the complexity of simplification of flowsheet Conducive to saving cost of manufacture.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 13, the second compensation film layer 500 When positioned at the inside of opposite substrate 100, the second compensation film layer 500 is located at side of the opposite substrate 100 towards liquid crystal layer 300, and Second compensation film layer 500 has the multiple spacer material structures for being convex to liquid crystal layer 300.
Specifically, the second compensation film layer 500 is multiplexed the function as spacer layer 130, to save the dottle pin being fabricated separately The process of nitride layer can simplify the complexity of process flow, be conducive to save cost of manufacture.
Also, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 13, film layer 500 is compensated second It, can also be by color film layer in order to simplify the film layer complexity of 100 side of opposite substrate when being multiplexed the function as spacer layer 110 are arranged on array substrate 200.
Alternatively, specifically, when the second compensation film layer 500 is located at the inside of opposite substrate 100, the second compensation film layer 500 It can also be multiplexed as flatness layer, the complexity of simplification of flowsheet, be conducive to save cost of manufacture.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, in order to guarantee multiplexing as flatness layer 120 Second compensation film layer 500 can play the role of planarization, that is, fill and lead up the uneven of color 110 upper surface of film layer, mend to second Repay film layer 500 thickness have it is required, it is desirable that its thickness needs in 0.8 μm~2.5 μ ms, flat to guarantee to play Change effect.Also, have to the viscosity of the second compensation film layer 500 before curing required, it is desirable that its viscosity is needed in 1.0mpa/s Within the scope of~50mpa/s, to guarantee the mobility of the second compensation film layer 500, it can fill into rough gap to rise It is acted on to planarization.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the first compensation film layer 400 and the second compensation film Layer 500 can be liquid crystal film, to reduce cost of manufacture.Certainly, the first compensation film layer 400 and the second compensation film layer 500 can also be with For other materials, it is not limited here.It should be noted that being liquid in the first compensation film layer 400 and the second compensation film layer 500 When epitaxial, initial orientation once it is determined that after just no longer change, this is different from 300 situation of liquid crystal layer in display panel.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, in order to guarantee the light of the first compensation film layer 400 Axis direction and the initial optical axis direction of the liquid crystal molecule in liquid crystal layer 300 are mutually perpendicular to, and as is illustrated by figs. 11 and 12, can also be wrapped Include: positioned at the first compensation film layer 400 far from 300 side of liquid crystal layer and with the first adjacent both alignment layers 410 of compensation film layer 400.Or Person can also select the liquid crystal film with alignment direction as the first compensation film layer 400, and save setting both alignment layers 410, with letter Change production process.
Specifically, as shown in figure 11, when the first compensation film layer 400 is located at array substrate 200 towards 300 side of liquid crystal layer When, both alignment layers 410 are located between the first compensation film layer 400 and array substrate 200；As shown in figure 12, when first compensates film layer 400 When positioned at opposite substrate 100 towards 300 side of liquid crystal layer, both alignment layers 410 are located at the first compensation film layer 400 and opposite substrate 100 Between.
Specifically, the following table 1 lists some optical characteristics of the first compensation film layer 400 and the second compensation film layer 500.Following table 2 list the one of the display panel 2 and ordinary display panel 1 that increase the first compensation film layer 400 and the second compensation film layer 500 A little optical parameters compare and can be found that these parameters without significant change, that is, show that increasing the first compensation film layer 400 and second mends The display panel of film layer 500 its performance is repaid without larger reduction.
Table 1
Transmitance Visual angle (left/right/up/down) Response time Maximum brightness Colour gamut (CIE1931) Wx, Wy
Display panel 1 2.75% 89/89/89/89 15.47 136 67.7 0.293,0.329
Display panel 2 2.73% 89/89/89/89 15.43 135 67.2 0.293,0.338
Table 2
Based on the same inventive concept, the embodiment of the invention also provides a kind of production sides of the display panel of horizontal electric field type Method a, comprising: opposite substrate and array basal plate, the filling liquid crystal layer between opposite substrate and array substrate are provided；Further include: The first compensation film layer is formed on opposite substrate or array substrate；
Wherein, formed first compensation film layer specifically include: coating comprising first compensation film material liquid, to liquid into Row pre-firing processes form the first compensation film layer with certain alignment direction.Specifically, pre-firing processes may remain in 30 ~100 DEG C, retention time 5s~60min.
Also, before coating the liquid comprising the first compensation film material, both alignment layers can also be formed, both alignment layers can be with It is PI orientation by friction progress orientation, is also possible to OA orientation, it is not limited here.
Optionally, it in above-mentioned production method provided in an embodiment of the present invention, is formed on opposite substrate or array substrate Before both alignment layers, further includes:
The second compensation film layer of the phase delay for compensating non axial light is formed on opposite substrate or array substrate；
The second compensation film layer is formed to specifically include:
Liquid of the coating comprising the second compensation film material, carries out pre-firing processes to the liquid, forms the second compensation Film layer.Specifically, pre-firing processes may remain in 30~100 DEG C, retention time 5s~60min.
Optionally, in above-mentioned production method provided in an embodiment of the present invention, after carrying out pre-firing processes to liquid, Can also include:
It uses wavelength for 365nm and light intensity is 0.5mw/cm2~600mw/cm2Ultraviolet light, to liquid carry out when it is a length of The irradiation of 30s~60min, i.e. first time UV irradiation.
Optionally, in above-mentioned production method provided in an embodiment of the present invention, ultraviolet using 365nm to the liquid Before light is irradiated, can also include:
It uses wavelength for 254nm and light intensity is 0.5mw/cm2~600mw/cm2Ultraviolet light, to the liquid carry out duration For the irradiation of 30s~60min, i.e. second of UV irradiation.
Optionally, in above-mentioned production method provided in an embodiment of the present invention, film layer and second is compensated in formation first and is mended Repay film layer finally, can also include: rear baking process, specifically can heat 2min~50min at 180~280 DEG C.
It is summarized as follows, in above-mentioned production method provided in an embodiment of the present invention, forms the process tool of the first compensation film layer Body may include following several situations:
1, liquid → pre-firing processes → rear baking process that both alignment layers → coating includes the first compensation film material is formed；
2, liquid → pre-firing processes → first time UV photograph that both alignment layers → coating includes the first compensation film material is formed It penetrates；
3, liquid → pre-firing processes → first time UV photograph that both alignment layers → coating includes the first compensation film material is formed Penetrate → rear baking process；
4, liquid → pre-firing processes of the coating comprising the first compensation film material；
5, coating irradiates → second UV comprising liquid → pre-firing processes → first time UV of the first compensation film material Irradiation；
6, liquid → pre-firing processes of the coating comprising the first compensation film material → first time UV irradiation → rear Roaster Skill.
It is summarized as follows, in above-mentioned production method provided in an embodiment of the present invention, forms the process tool of the second compensation film layer Body may include following several situations:
1, liquid → pre-firing processes → rear baking process of the coating comprising the second compensation film material；
2, liquid → pre-firing processes of the coating comprising the second compensation film material → first time UV irradiation；
3, liquid → pre-firing processes of the coating comprising the second compensation film material；
4, coating irradiates → second UV comprising liquid → pre-firing processes → first time UV of the second compensation film material Irradiation；
5, liquid → pre-firing processes of the coating comprising the second compensation film material → first time UV irradiation → rear Roaster Skill.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, including the embodiment of the present invention to mention The display panel of the above-mentioned horizontal electric field type supplied, the display device can be with are as follows: mobile phone, tablet computer, television set, display, pen Remember any products or components having a display function such as this computer, Digital Frame, navigator.The implementation of the display device can be joined See the embodiment of the display panel of above-mentioned horizontal electric field type, overlaps will not be repeated.
Display panel, its production method and the display device of above-mentioned horizontal electric field type provided in an embodiment of the present invention, right To the first compensation of setting film layer between substrate and array substrate, the first compensation film layer is in display panel by non-homogeneous external force In the case where, compensate the phase delay of axial ray.In this way, the case where opposite substrate and array substrate are by non-homogeneous external force Lower generation optical anisotropy, when transmitted light polarization state being caused to change, the first compensation film layer can compensate for polarised light warp The phase delay for crossing liquid crystal layer makes light after opposite substrate, array substrate, liquid crystal layer and the first compensation film layer, certain Original polarization state is restored in degree.In this way, the overwhelming majority in light cannot be from display panel when being in dark-state It projects, so as to improve dark-state leakage problem.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (28)

1. a kind of display panel of horizontal electric field type characterized by comprising the opposite substrate and array substrate set relatively, Liquid crystal layer between the opposite substrate and the array substrate, and it is located at the opposite substrate and the array substrate Between first compensation film layer；Wherein,
The first compensation film layer is used in the display panel by non-homogeneous external force, compensates axial ray Phase delay.
2. display panel as described in claim 1, which is characterized in that the optical axis direction and the liquid of the first compensation film layer The initial optical axis direction of liquid crystal molecule in crystal layer is parallel to each other；
The sum of optical path difference and the optical path difference of the liquid crystal layer of the first compensation film layer are the integral multiple of lambda1-wavelength.
3. display panel as claimed in claim 2, which is characterized in that the optical path difference of the first compensation film layer and the liquid crystal The sum of optical path difference of layer is the lambda1-wavelength.
4. display panel as described in claim 1, which is characterized in that the optical axis direction and the liquid of the first compensation film layer The initial optical axis direction of liquid crystal molecule in crystal layer is mutually perpendicular to；
The optical path difference of the first compensation film layer differs the integral multiple of lambda1-wavelength with the optical path difference of the liquid crystal layer.
5. display panel as claimed in claim 4, which is characterized in that the optical path difference of the first compensation film layer and the liquid crystal The optical path difference of layer is equal.
6. display panel as described in any one in claim 1-5, which is characterized in that the first compensation film layer is+A compensation film Layer.
7. display panel as described in claim 1, which is characterized in that it is described first compensation film layer with a thickness of 1 μm~5 μm.
8. display panel as described in claim 1, which is characterized in that further include: it is located at the opposite substrate towards the liquid The color film layer of crystal layer side positioned at the color flatness layer of the film layer towards the liquid crystal layer side, and is located at the flatness layer Spacer layer towards the liquid crystal layer side；
The first compensation film layer is located between the color film layer and the spacer layer as flatness layer.
9. display panel as described in claim 1, which is characterized in that further include: the phase for compensating non axial light is prolonged The second slow compensation film layer, the second compensation film layer are located at the light emission side of the liquid crystal layer and the first compensation film layer.
10. display panel as claimed in claim 9, which is characterized in that second compensation layer is+C compensation film layer or-C mend Repay film layer.
11. display panel as claimed in claim 9, which is characterized in that it is described second compensation film layer with a thickness of 0.5 μm~5 μ m。
12. display panel as claimed in claim 9, which is characterized in that phase of the second compensation film layer in thickness direction Retardation is 92nm~300nm.
13. display panel as claimed in claim 9, which is characterized in that the first compensation film layer and second compensation film Layer is located at the same side of the liquid crystal layer, and the second compensation film layer is located at the first compensation film layer and deviates from the liquid crystal layer Side.
14. display panel as claimed in claim 13, which is characterized in that the second compensation film layer is located at the opposite substrate Side towards the liquid crystal layer；Or, the second compensation film layer is located at the side that the opposite substrate deviates from the liquid crystal layer.
15. display panel as claimed in claim 14, which is characterized in that further include: it is located at the opposite substrate towards described The color film layer of liquid crystal layer side, and positioned at the color spacer layer of the film layer towards the liquid crystal layer side；
The second compensation film layer is located between the color film layer and the spacer layer as flatness layer；First compensation film Layer is between second compensation layer and the spacer layer.
16. the display panel as described in claim 8 or 15, which is characterized in that the flatness layer with a thickness of 0.8 μm~2.5 μ m。
17. the display panel as described in claim 8 or 15, which is characterized in that the first compensation film layer is as described flat Viscosity when layer before curing is 1.0mPas~15mPas；The second compensation film layer is as the flatness layer Shi Gu Viscosity before change is 1.5mPas~20mPas.
18. display panel as claimed in claim 13, which is characterized in that the first compensation film layer and second compensation film Layer is located at the not ipsilateral of the liquid crystal layer.
19. display panel as claimed in claim 18, which is characterized in that the first compensation film layer is located at the array substrate Side towards the liquid crystal layer；
The second compensation film layer is located at side of the opposite substrate towards the liquid crystal layer；Or, the second compensation film layer Deviate from the side of the liquid crystal layer positioned at the opposite substrate.
20. the display panel as described in claim 14 or 19, which is characterized in that the second compensation film layer is as upper polarizer Deviate from the side of the liquid crystal layer positioned at the opposite substrate.
21. display panel as claimed in claim 19, which is characterized in that the second compensation film layer is located at the opposite substrate Side towards the liquid crystal layer, and the second compensation film layer has the multiple spacer material structures for being convex to the liquid crystal layer.
22. display panel as claimed in claim 9, which is characterized in that the first compensation film layer and second compensation film Layer is liquid crystal film.
23. display panel as claimed in claim 22, which is characterized in that further include: it is separate to be located at the first compensation film layer The liquid crystal layer side and the both alignment layers adjacent with the first compensation film layer.
24. a kind of display device characterized by comprising such as showing for the described in any item horizontal electric field types of claim 1-23 Show panel.
25. a kind of production method of such as display panel of the described in any item horizontal electric field types of claim 1-24, comprising: provide One opposite substrate and array basal plate, the filling liquid crystal layer between the opposite substrate and the array substrate；It is characterized in that, Further include:
The first compensation film layer is formed on the opposite substrate or the array substrate；
The first compensation film layer is formed to specifically include:
Liquid of the coating comprising the first compensation film material, carries out pre-firing processes to the liquid, being formed has certain orientation The first compensation film layer in direction.
26. production method as claimed in claim 25, which is characterized in that further include:
The second compensation of the phase delay for compensating non axial light is formed on the opposite substrate or the array substrate Film layer；
The second compensation film layer is formed to specifically include:
Liquid of the coating comprising the second compensation film material, carries out pre-firing processes to the liquid, forms second compensation Film layer.
27. the production method as described in claim 25 or 26, which is characterized in that the liquid carry out pre-firing processes it Afterwards, further includes:
It uses wavelength for 365nm and light intensity is 0.5mw/cm2~600mw/cm2Ultraviolet light, to the liquid carry out when it is a length of The irradiation of 30s~60min.
28. production method as claimed in claim 27, which is characterized in that the liquid using 365nm ultraviolet light into Before row irradiation, further includes:
It uses wavelength for 254nm and light intensity is 0.5mw/cm2~600mw/cm2Ultraviolet light, to the liquid carry out when it is a length of The irradiation of 30s~60min.
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