CN108303830A - 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 PDFInfo
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- CN108303830A CN108303830A CN201810150986.9A CN201810150986A CN108303830A CN 108303830 A CN108303830 A CN 108303830A CN 201810150986 A CN201810150986 A CN 201810150986A CN 108303830 A CN108303830 A CN 108303830A
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- film layer
- layer
- compensation film
- liquid crystal
- display panel
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- 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
- 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
- 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, the first compensation of setting film layer between opposite substrate and array substrate, the phase difference of the first compensation film layer and the integral multiple that the sum of the phase difference of liquid crystal layer is lambda1-wavelength, and the initial optical axis direction of optical axis direction and the liquid crystal molecule in liquid crystal layer is mutually parallel.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, its total phase delay is close or equal to the integral multiple of lambda1-wavelength, and then the light is made to be restored to original polarization state to a certain extent.In this way, when in dark-state, the overwhelming majority in light cannot be projected from display panel, so as to improve dark-state leakage problem.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of display panel of horizontal electric field type, its production method and
Display device.
Background technology
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 through optically anisotropic underlay substrate when polarization state change, can cause display panel dark-state produce
Raw different degrees of leakage problem.
Invention content
In view of this, an embodiment of the present 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, an embodiment of the present invention provides a kind of display panels, including：The opposite substrate and array base set relatively
Plate, the liquid crystal layer between the opposite substrate and the array substrate, and positioned at the opposite substrate and the array
The first compensation film layer between substrate；Wherein,
The initial optical axis direction of the optical axis direction and the liquid crystal molecule in the liquid crystal layer of the first compensation film layer is mutual
It is parallel；
The sum of the phase difference of the first compensation film layer and the phase difference of the liquid crystal 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 mends
The phase difference for repaying film layer is equal with the phase 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 mends
It is that+A compensates film layer to repay film layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further include：It is 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 at as flatness layer between the color film layer and the spacer layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further include：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 mends
It is+C compensation film layer or-C compensation film layer to repay layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first mends
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 mends
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 include：It is 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 at as flatness layer between the color film layer and the spacer 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
Thickness be 0.8 μm~2.5 μm.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, the flatness layer
Viscosity before curing is 1.0mpa/s~50mpa/s.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first mends
It repays film layer and the second compensation film layer is located at the not homonymy of the liquid crystal layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, described first mends
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 first mends
It is liquid crystal film to repay film layer and the second compensation film layer.
In one possible implementation, in above-mentioned display panel provided in an embodiment of the present invention, further include：It is 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 present invention additionally provides a kind of display device, including：It is 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 present invention additionally provides a kind of production method of the display panel of horizontal electric field type, including：
An opposite substrate and array basal plate are provided, the filling liquid crystal layer between the opposite substrate and the array substrate；Further include：
Both alignment layers are formed on the opposite substrate or the array substrate；
The first compensation film layer is formed in the both alignment layers；The optical axis direction and the liquid crystal layer of the first compensation film layer
In the initial optical axis direction of liquid crystal molecule be mutually parallel, and the phase of the phase difference and the liquid crystal layer of the first compensation film layer
The sum of potential difference is the integral multiple of lambda1-wavelength.
In one possible implementation, in above-mentioned production method provided in an embodiment of the present invention, in the opposite direction
It is formed before both alignment layers on substrate or the array substrate, further includes：
Second of the phase delay for compensating non axial light is formed on the opposite substrate or the array substrate
Compensate film layer.
In one possible implementation, in above-mentioned production method provided in an embodiment of the present invention, in the opposite direction
It is formed on substrate before the second compensation film layer, further includes：Color film layer is formed on the opposite substrate；
The second compensation film layer is as flatness layer；
It is formed in the both alignment layers after the first compensation film layer, further includes：It is described first compensation film layer on formed every
Underbed.
The advantageous 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 between substrate and array substrate setting first compensation film layer, this first compensation film layer phase difference and liquid crystal layer phase difference it
It is mutually parallel with the initial optical axis direction of the integral multiple for lambda1-wavelength, and optical axis direction and the liquid crystal molecule in liquid crystal layer.
Optical anisotropy is generated in the case where opposite substrate and array substrate are by non-homogeneous external force, causes transmitted light polarization state
When changing, first compensation film layer can compensate for polarised light pass through liquid crystal layer phase delay, make light by opposite substrate,
After array substrate, liquid crystal layer and the first compensation film layer, total phase delay is close or equal to the integral multiple of lambda1-wavelength, into
And the light is made to be restored to original polarization state to a certain extent.In this way, when in dark-state, the overwhelming majority in light
It cannot be projected from display panel, so as to improve dark-state leakage problem.
Description of the drawings
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 is one kind of the polarization state through light in poincare sphere of each layer of display panel provided in an embodiment of the present invention
Schematic diagram；
Fig. 6 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
Kind schematic diagram；
Fig. 7 has a kind of structural schematic diagram when the second compensation film layer for display panel provided in an embodiment of the present invention；
Fig. 8 has another structural schematic diagram when the second compensation film layer for display panel provided in an embodiment of the present invention；
Fig. 9 has another structural schematic diagram when the second compensation film layer for display panel provided in an embodiment of the present invention；
Figure 10 has another structural schematic diagram when the second compensation film layer for display panel provided in an embodiment of the present invention；
Figure 11 has another structural schematic diagram when the second compensation film layer for display panel provided in an embodiment of the present invention；
Figure 12 has another structural schematic diagram when the second compensation film layer for display panel provided in an embodiment of the present invention；
Figure 13 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 implementation mode
Plane conversion (IPS, In-Plane Switching) and Senior super dimension field switch technology (ADS, Advanced
Super Dimension Switch) pattern 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 types LCD as an example, as shown in Figure 1, ADS types 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 ensure normally to show, right
It is respectively arranged with the orthogonal upper polarizer 105 of light between axlemolecules and lower polarizing film to the outside of substrate 104 and array substrate 102
101.Since liquid crystal cannot shine, liquid crystal display panel also needs to setting backlight (Fig. 1 is not shown).The light that backlight is sent out
It is projected successively 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 types LCD, and in the case where being not added with voltage, 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 types LCD is in dark-state at this time；In the case that alive, liquid crystal molecule rotation from
And light is distorted, the polarization direction of light is changed in this way so that light can be projected by upper polarizer 105, to show
Bright picture, at this time ADS types LCD be in illuminated state.
It is formed since the underlay substrate of array substrate 102 and opposite substrate 104 generally mostly uses glass, and glass is for light
Line has birefringence 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 stressing conditions 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 that upper glass substrate generates is generated with glass substrate
The phase of state is equal in magnitude, and direction is on the contrary, in the case of 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, phase 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 is sent out 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 that linearly polarized light, upper and lower pole correspond to right-circularly polarized light and left-handed circle respectively
Polarised light, other each corresponding elliptically polarized lights of point on spherical surface, wherein episphere are 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 interior points of sphere indicated is part
Polarised light.
The light that backlight is sent out by liquid crystal display panel when polarization state in poincare sphere each process be respectively：
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, can be modulated by liquid crystal, occur the variation of polarization state, 3. polarization state, which is located at, to be located；It is non-that generation is undergone again
When after the glass of the homogeneous state of stress, 4. polarization state, which is moved to, to be located, will not with 1. overlap, then some light will appear, so as to cause
There is dark-state leakage problem in ADS types LCD.And TN types LCD and VA type LCD is arranged not due to the initial orientation of liquid crystal molecule
Together, therefore be not in dark-state leakage problem.
Based on this, an embodiment of the present 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
The 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 that actual proportions, purpose are schematically illustrate the content of present invention in attached drawing.
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, including：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,
The initial optical axis direction of the optical axis direction and the liquid crystal molecule in liquid crystal layer 300 of first compensation film layer 400 is mutually flat
Row；
The sum of the phase difference of first compensation film layer 400 and the phase difference of liquid crystal layer 300 are the integral multiple of lambda1-wavelength.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, in opposite substrate 100 and array substrate 200
Between setting the first compensation film layer 400, the sum of phase difference and the phase difference of liquid crystal layer 300 of the first compensation film layer 400 be into
The integral multiple of optical wavelength is penetrated, and the initial optical axis direction of optical axis direction and the liquid crystal molecule in liquid crystal layer 300 is mutually parallel.Right
To substrate 100 and array substrate 200 by non-homogeneous external force in the case of generate optical anisotropy, cause transmitted light to polarize
When state changes, the first compensation film layer 400 can compensate for the phase delay that polarised light passes through liquid crystal layer 300, and light is made to pass through
After opposite substrate 100, array substrate 200, liquid crystal layer 300 and first compensate film layer 400, total phase delay is close or equal to
The integral multiple of lambda1-wavelength, and then the light is made to be restored to original polarization state to a certain extent.In this way, in dark
When state, the overwhelming majority in light cannot be projected from the display panel of horizontal alignment, 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 sum of phase difference of crystal layer 300 is the integral multiple of lambda1-wavelength, to ensure polarised light in the phase generated by liquid crystal layer 300
Difference, near the polarization state before may return to after the phase difference compensation of the first compensation film layer 400.Wherein lambda1-wavelength
Can be visible wavelength range, lambda1-wavelength may be the common monochromatic wavelength of display panel, such as red light wavelength
Range, green wavelength, blue wavelength range etc., lambda1-wavelength can also be standard wave length, such as 550nm, herein not
It limits.
Also, the sum of phase difference of the phase 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 may exist certain margin of tolerance, such as the margin of tolerance is within ± 20%, in this hair
Within bright protection domain.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 mutually parallel, is also likely to be present certain margin of tolerance, such as the margin of tolerance is within ± 11 °, in the present invention
Protection domain in.
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 sum of phase 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
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 make the whole thinning of the first compensation film layer 400 and module.
For example, the phase difference of the first compensation film layer 400 is λ -340nm, the phase difference of liquid crystal layer 300 is 340nm.At this point,
As shown in figure 5, polarization state of the light that backlight is sent out when dark-state when by display panel each process point in poincare sphere
It is not：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, can be modulated by 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 phase difference and the phase difference of liquid crystal layer 300 are crossed as the first compensation layer 400 of λ, the previous phase additionally generated is compensated
Potential difference, 4. the polarization state after compensation, which is located at, to be located；Undergo again generate unequal stress opposite substrate 100 after when, polarization state movement
To 5. locating, just with 1. overlap, then generate optics in the case that opposite substrate 100 and array substrate 200 are by non-homogeneous external force
It influences to be capped caused by anisotropy, not will produce dark-state leakage problem.
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 sum of phase difference of crystal layer 300 is integral multiple lambda1-wavelength, for example, the phase difference of the first compensation film layer 400 can be with 2* λ-
The phase difference of 340nm, liquid crystal layer 300 can be 340nm.At this point, as shown in fig. 6, the light that backlight is sent out when dark-state is passing through
Polarization state when crossing display panel each process in poincare sphere is respectively：After lower polarizing film, 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；Optical axis elliptically polarized light not parallel with liquid crystal optic axis, can be adjusted by 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 phase difference by phase difference and liquid crystal layer 300 2* λ
After one compensation layer 400, the previous phase 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 with 1. overlap, 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, not will produce dark-state leakage problem.
Specifically, in above-mentioned display panel provided in an embodiment of the present invention, the phase-delay quantity of the first compensation film layer 400
It is typically chosen within the scope of 100nm~400nm.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, the first compensation film layer 400 can be that+A is compensated
Film layer, also known as+A plates meet nx1 ＞ ny1=nz1, wherein nx1 is the refraction in the X-direction in the+A compensation film levels
Rate, the refractive index in Y direction vertical with X-axis in the+A compensation film levels ny1, 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.The relevant parameter of film layer is compensated by adjusting+A so that R+A-RLC=m* λ, m=0, ±
1, ± 2 ..., that is, meet (nx1-ny1) * d1=(ne-n0)*d2+m*λ.In this way+A compensate film layer optical axis direction be in
When the long axis direction of the liquid crystal molecule of original state is mutually parallel, 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
With positioned 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, does not limit herein.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in figure 4, can also include：Positioned at pair
To color film layer 110 of the substrate 100 towards 300 side of liquid crystal layer, and positioned at color film layer 110 towards 300 side of liquid crystal layer every
Underbed layer 130；First compensation film layer 400, which can be multiplexed, to be located at as flatness layer 120 between color film layer 110 and spacer layer 130.
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 be conducive to save cost of manufacture with the complexity of simplification of flowsheet.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, in order to ensure 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 110 upper surface of color film layer, mended 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 ensure to play
Change acts on.Also, have to the viscosity of the first compensation film layer 400 before curing required, it is desirable that its viscosity is needed in 1.0mpa/s
Within the scope of~50mpa/s, to ensure 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 perpendicular to the direction of display screen) watches the display panel, the light of upper polarizer 22 and lower polarizing film is inhaled
It is orthogonal to receive 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 orthogonal polarizing film can occur partially originally
Move, i.e., the light absorption axis of upper polarizer and lower polarizing film is not orthogonal, can cause so non axial angular field of view it is small, production
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
In display panel, as shown in Fig. 7 to Figure 12, can also include：The second compensation for the phase delay for compensating non axial light
Film layer 500, the second compensation film layer 500 are located at the light emission side that liquid crystal layer 300 and first compensates 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 compensates film layer relative to liquid crystal layer 300 and first
400 pass through the second compensation closer to opposite substrate 100 after that is, light can first pass through the compensation film layer 400 of liquid crystal layer 300 and first
Film layer 500.
Specifically, as shown in figure 13, under off-axis big visual angle, the light that backlight is sent out when dark-state is by display panel
When polarization state in poincare sphere each process be respectively：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, not will produce the dark-state leakage problem under off-axis big visual angle state.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 be that+C is compensated
Film layer, also known as+C plates 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 vertical with X-axis in the optical compensation film surface ny2, 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 plates, meet nz3<Ny3=
Nx3, wherein nx3 is the refractive index in 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, thickness phase delay Rth=[(nx2+ny2)/2-nz2] × d3 of+C compensation film layer, 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
It is zero to repay film layer phase delay in face, 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.
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, thickness phase delay Rth can choose 50nm~200nm.
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 compensation film layer 500 can be located at liquid crystal layer 300 the same side, and second compensation film layer 500 be 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 second is compensated into film layer 500 and is arranged at opposite substrate 100 towards liquid crystal
The side of layer 300, i.e., the first compensation film layer 400 and second compensate film layer 500 and are both formed on opposite substrate 100, be 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
Positioned at side of the opposite substrate 100 towards liquid crystal layer 300, that is, to be 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, that is, be located at the outer of opposite substrate 100
Side, such as the second compensation film layer 500 can also be set in upper polarizer.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, as shown in fig. 7, can also include：Positioned at pair
To color film layer 110 of the substrate 100 towards 300 side of liquid crystal layer, and positioned at color film layer 110 towards 300 side of liquid crystal layer every
Underbed layer 130；Second compensation film layer 500, which can be multiplexed, to be located at as flatness layer 120 between color film layer 110 and spacer layer 130；
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, can be conducive to save cost of manufacture with the complexity of simplification of flowsheet.
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 homonymy 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, such as can also the second compensation film layer 500 be set to upper polarization
In piece.
Specifically, when the second compensation film layer 500 is located at the inside of opposite substrate 100, the second compensation film layer 500 can answer
It is used as flatness layer, the complexity of simplification of flowsheet is conducive to save cost of manufacture.
Optionally, in above-mentioned display panel provided in an embodiment of the present invention, in order to ensure 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 110 upper surface of color film layer, mended 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 ensure to play
Change acts on.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 ensure 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 compensation film layer 500 of film layer 400 and second can also
For other materials, do not limit herein.It should be noted that it is liquid to compensate film layer 500 in the first compensation film layer 400 and second
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 ensure 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
It includes：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.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of making side of the display panel of horizontal electric field type
Method, including：An opposite substrate and array basal plate are provided, the filling liquid crystal layer between opposite substrate and array substrate；Further include：
Both alignment layers are formed on opposite substrate or array substrate；
The first compensation film layer is formed in both alignment layers；Liquid crystal molecule in the optical axis direction and liquid crystal layer of first compensation film layer
Initial optical axis direction be mutually parallel, and the phase difference of the first compensation film layer and the sum of phase difference of liquid crystal layer are lambda1-wavelength
Integral multiple.
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 include：
The second compensation film layer of the phase delay for compensating non axial light is formed on opposite substrate or array substrate.
Optionally, in above-mentioned production method provided in an embodiment of the present invention, the second compensation film is formed on opposite substrate
Before layer, further include：Color film layer is formed on opposite substrate；
Second compensation film layer is as flatness layer；
It is formed in both alignment layers after the first compensation film layer, further includes：Spacer material is formed in the first compensation film layer.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, including the embodiment of the present invention carries
The display panel of the above-mentioned horizontal electric field type supplied, the display device can be：Mobile phone, tablet computer, television set, display, pen
Remember any product or component with 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 between substrate and array substrate setting first compensation film layer, this first compensation film layer phase difference and liquid crystal layer phase difference it
It is mutually parallel with the initial optical axis direction of the integral multiple for lambda1-wavelength, and optical axis direction and the liquid crystal molecule in liquid crystal layer.
Optical anisotropy is generated in the case where opposite substrate and array substrate are by non-homogeneous external force, causes transmitted light polarization state
When changing, first compensation film layer can compensate for polarised light pass through liquid crystal layer phase delay, make light by opposite substrate,
After array substrate, liquid crystal layer and the first compensation film layer, total phase delay is close or equal to the integral multiple of lambda1-wavelength, into
And the light is made to be restored to original polarization state to a certain extent.In this way, when in dark-state, the overwhelming majority in light
It cannot be projected from display panel, 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
God 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 (19)
1. a kind of display panel of horizontal electric field type, which is characterized in that including：The opposite substrate and array substrate set relatively,
Liquid crystal layer between the opposite substrate and the array substrate, and positioned at the opposite substrate and the array substrate
Between first compensation film layer；Wherein,
The initial optical axis direction of the optical axis direction and the liquid crystal molecule in the liquid crystal layer of the first compensation film layer is mutually parallel；
The sum of the phase difference of the first compensation film layer and the phase difference of the liquid crystal layer are the integral multiple of lambda1-wavelength.
2. display panel as described in claim 1, which is characterized in that the phase difference and the liquid crystal of the first compensation film layer
The sum of phase difference of layer is lambda1-wavelength.
3. display panel as described in claim 1, which is characterized in that the first compensation film layer is that+A compensates film layer.
4. display panel as described in claim 1, which is characterized in that further include：Positioned at the opposite substrate towards the liquid
The color film layer of crystal layer side is located 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 at as flatness layer between the color film layer and the spacer layer.
5. display panel as described in claim 1, which is characterized in that further include：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.
6. display panel as claimed in claim 5, which is characterized in that second compensation layer be+C compensation film layer or-C compensation
Film layer.
7. display panel as claimed in claim 5, which is characterized in that the first compensation film layer and the second compensation film layer
Positioned at the same side of the liquid crystal layer, and the second compensation film layer is located at described first and compensates film layer away from the liquid crystal layer
Side.
8. display panel as claimed in claim 7, which is characterized in that the second compensation film layer is located at the opposite substrate face
To the side of 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.
9. display panel as claimed in claim 8, which is characterized in that further include：Positioned at the opposite substrate towards the liquid
The color film layer of 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 at as flatness layer between the color film layer and the spacer layer；First compensation film
Layer is between second compensation layer and the spacer layer.
10. the display panel as described in claim 4 or 9, which is characterized in that the thickness of the flatness layer is 0.8 μm~2.5 μ
m。
11. the display panel as described in claim 4 or 9, which is characterized in that the viscosity of the flatness layer before curing is
1.0mpa/s~50mpa/s.
12. display panel as claimed in claim 7, which is characterized in that the first compensation film layer and second compensation film
Layer is located at the not homonymy of the liquid crystal layer.
13. display panel as claimed in claim 7, 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.
14. display panel as claimed in claim 5, which is characterized in that the first compensation film layer and second compensation film
Layer is liquid crystal film.
15. display panel as claimed in claim 14, which is characterized in that further include：It is separate positioned at the first compensation film layer
The liquid crystal layer side and the both alignment layers adjacent with the first compensation film layer.
16. a kind of display device, which is characterized in that including：Such as showing for claim 1-15 any one of them horizontal electric field types
Show panel.
17. a kind of production method of the display panel of horizontal electric field type, including：One opposite substrate and array basal plate are provided,
Filling liquid crystal layer between the opposite substrate and the array substrate；It is characterized in that, further including：
Both alignment layers are formed on the opposite substrate or the array substrate；
The first compensation film layer is formed in the both alignment layers；In the optical axis direction and the liquid crystal layer of the first compensation film layer
The initial optical axis direction of liquid crystal molecule is mutually parallel, and the phase difference of the phase difference and the liquid crystal layer of the first compensation film layer
The sum of be lambda1-wavelength integral multiple.
18. production method as claimed in claim 17, which is characterized in that the shape on the opposite substrate or the array substrate
Before both alignment layers, 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.
19. production method as claimed in claim 18, which is characterized in that form second compensation on the opposite substrate
Before film layer, further include：Color film layer is formed on the opposite substrate；
The second compensation film layer is as flatness layer；
It is formed in the both alignment layers after the first compensation film layer, further includes：Spacer material is formed in the first compensation film layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810150986.9A CN108303830A (en) | 2018-02-13 | 2018-02-13 | A kind of display panel of horizontal electric field type, its production method and display device |
| CN201810996185.4A CN109445193A (en) | 2018-02-13 | 2018-08-29 | A kind of display panel of horizontal electric field type, its production method and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810150986.9A CN108303830A (en) | 2018-02-13 | 2018-02-13 | A kind of display panel of horizontal electric field type, its production method and display device |
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| Publication Number | Publication Date |
|---|---|
| CN108303830A true CN108303830A (en) | 2018-07-20 |
Family
ID=62865434
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810150986.9A Pending CN108303830A (en) | 2018-02-13 | 2018-02-13 | A kind of display panel of horizontal electric field type, its production method and display device |
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| CN (1) | CN108303830A (en) |
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| WO2019157815A1 (en) * | 2018-02-13 | 2019-08-22 | 京东方科技集团股份有限公司 | Horizontal electric field type display panel, manufacturing method thereof, and display device |
| CN111610666A (en) * | 2020-06-24 | 2020-09-01 | 京东方科技集团股份有限公司 | Liquid crystal panel and display device |
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