CN206387979U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN206387979U CN206387979U CN201621101087.2U CN201621101087U CN206387979U CN 206387979 U CN206387979 U CN 206387979U CN 201621101087 U CN201621101087 U CN 201621101087U CN 206387979 U CN206387979 U CN 206387979U
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Abstract
The utility model discloses a kind of display panel and display device.The display panel includes：Including：First underlay substrate, liquid crystal layer, ducting layer, grating layer, quantum dot chromatic filter layer, first electrode and second electrode, the first electrode and the second electrode are used for the refractive index for adjusting the liquid crystal layer；The grating layer is used to control light coupling luminous from the ducting layer, and the coupling luminous coupling efficiency of the ducting layer is determined according to the difference of the refractive index of the liquid crystal layer and the refractive index of the grating layer.In the utility model without setting polarizer in display panel, it is to avoid the problem of quantum dot depolarization, so that quanta point material is applicable in liquid crystal display device；Improve the transmitance of display panel；And cause liquid crystal cell thickness can be set relatively thin, so as to improve the response time of liquid crystal.
Description
Technical field
The utility model is related to display technology field, more particularly to a kind of display panel and display device.
Background technology
In display technology field, liquid crystal display device includes backlight and display panel, and display panel includes being oppositely arranged
Array base palte and color membrane substrates, be provided with liquid crystal layer between array base palte and color membrane substrates, the back side of array base palte and color film
The back side of substrate is provided with polaroid.The deflection and the control by two layers of polaroid of liquid crystal are controlled by voltage, with reality
Existing GTG is shown.
In the prior art, the colored color blocking in color membrane substrates can be made of quanta point material, be made using quanta point material
The colour gamut of display panel can be improved for colored color blocking, but quanta point material can destroy the polarization state of incident light, so that the amount of causing
The problem of son point depolarization, therefore quanta point material can not be applied in liquid crystal display device.
Polarizer is used in the display panel in liquid crystal display device in the prior art, liquid crystal display device can be caused to pass through
Rate very low (for example, transmitance is 7% or so) and liquid crystal cell thickness are larger (for example, 3um-5um), and larger box thickness can drop
The response time of low liquid crystal.
Utility model content
The utility model provides a kind of display panel and display device, for causing quanta point material to be applicable to liquid crystal
In display device, the transmitance of display panel is improved, and improve the response time of liquid crystal.
To achieve the above object, the utility model provides a kind of display panel, including：First underlay substrate, liquid crystal layer,
Ducting layer, grating layer, quantum dot chromatic filter layer, first electrode and second electrode, it is the liquid crystal layer, the grating layer, described
Quantum dot chromatic filter layer, the first electrode and the second electrode be located at the ducting layer and first underlay substrate it
Between, the grating layer is located at the side of the close liquid crystal layer of the ducting layer；
The first electrode and the second electrode are used for the refractive index for adjusting the liquid crystal layer；
The grating layer is used to control light coupling luminous from the ducting layer, the coupling luminous coupling effect of the ducting layer
Rate is determined according to the difference of the refractive index of the liquid crystal layer and the refractive index of the grating layer.
Alternatively, the second electrode and the first electrode are located at the homonymy or not homonymy of the liquid crystal layer.
Alternatively, the scope of the refractive index of the grating layer is the ordinary refraction index n of liquid crystal layeroTo liquid crystal layer very
Optical index ne。
Alternatively, the refractive index of the grating layer is the very optical index n of liquid crystal layero。
Alternatively, in addition to：Second underlay substrate, second underlay substrate is located at remote described the of the ducting layer
The side of one underlay substrate.
Alternatively, the second electrode is located at the side of close first underlay substrate of the ducting layer, the light
Gate layer is located at the side of close first underlay substrate of the second electrode, and the liquid crystal layer is located at leaning on for the grating layer
The side of nearly first underlay substrate；
The first electrode is located at the side of close second underlay substrate of first underlay substrate.
Alternatively, the quantum dot chromatic filter layer is located at the side close to the first underlay substrate of the first electrode；
Or, the quantum dot chromatic filter layer is located between the second electrode and the grating layer.
Alternatively, the refractive index of the second electrode is less than the refractive index of the ducting layer, second underlay substrate
Refractive index is less than the refractive index of the ducting layer.
Alternatively, the material of the liquid crystal layer can be nematic liquid crystal, cholesteric liquid crystal or blue phase liquid crystal.
Alternatively, the grating layer includes spaced shading strip, and the liquid crystal layer covers the grating layer and filling
In gap between the shading strip, the thickness of the liquid crystal layer is more than the thickness of the grating layer.
Alternatively, if the difference of the refractive index of the liquid crystal layer and the refractive index of the grating layer is 0, the waveguide
The coupling luminous coupling efficiency of layer is 0, so that the display panel is in normally-black display pattern；Or
If the absolute value of the refractive index of the liquid crystal layer and the difference of the refractive index of the grating layer is setting difference, institute
It is setting coupling efficiency to state the coupling luminous coupling efficiency of ducting layer, so that the display panel is in often white display pattern；Or
Person
If the absolute value of the refractive index of the liquid crystal layer and the difference of the refractive index of the grating layer is more than 0 and less than institute
When stating setting difference, the coupling luminous coupling efficiency of the ducting layer is more than 0 and less than setting coupling efficiency, so that the display
Panel is in other GTG display patterns outside normally-black display pattern and Chang Bai display patterns.
To achieve the above object, the utility model provides a kind of display device, including：Backlight and above-mentioned display surface
Plate.
Alternatively, the backlight be located at the display panel side, the backlight at least with the ducting layer pair
It should set, the light direction of the light of the backlight is parallel with plane where the ducting layer.
The utility model has the advantages that：
In display panel and the technical scheme of display device that the utility model is provided, display panel includes the first substrate base
Plate, liquid crystal layer, ducting layer, grating layer, quantum dot chromatic filter layer, first electrode and second electrode, first electrode and the second electricity
The refractive index of pole adjustable liquid crystal layer, grating layer control light is coupling luminous from ducting layer, the coupling luminous coupling effect of ducting layer
Rate is determined according to the difference of the refractive index of liquid crystal layer and the refractive index of grating layer, without be set in display panel in the utility model
Polarizer is put, it is to avoid the problem of quantum dot depolarization, so that quanta point material is applicable in liquid crystal display device；This
Without setting polarizer in display panel in embodiment, so as to improve the transmitance of display panel；Need not in the present embodiment
Polarizer is set in display panel, therefore the overall phase-delay quantity of liquid crystal layer need not be required so that liquid crystal cell thickness can be set
That puts is relatively thin, so as to improve the response time of liquid crystal.
Brief description of the drawings
Fig. 1 is a kind of structural representation for display panel that the utility model embodiment one is provided；
Fig. 2 is grating layer waveguide coupling schematic diagram in Fig. 1；
Fig. 3 is a kind of structural representation for display panel that the utility model embodiment two is provided；
Fig. 4 is a kind of structural representation for display device that the utility model embodiment three is provided；
Fig. 5 a are a kind of display pattern schematic diagram when display device is ECB display devices；
Fig. 5 b are another display pattern schematic diagram when display device is ECB display devices；
Fig. 6 a are a kind of display pattern schematic diagram when display device is IPS display devices；
Fig. 6 b are another display pattern schematic diagram when display device is IPS display devices；
Fig. 7 a are a kind of display pattern schematic diagram when display device is IPS display devices；
Fig. 7 b are another display pattern schematic diagram when display device is IPS display devices；
Fig. 8 a are a kind of display pattern schematic diagram when display device is VA display devices；
Fig. 8 b are another display pattern schematic diagram when display device is VA display devices；
Fig. 9 a are a kind of display pattern schematic diagram when display device is VA display devices；
Fig. 9 b are another display pattern schematic diagram when display device is VA display devices.
Embodiment
To make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
With the display panel of new offer and being described in detail for display device.
Fig. 1 is a kind of structural representation for display panel that the utility model embodiment one is provided, as shown in figure 1, this is aobvious
Show that panel includes：First underlay substrate 2, liquid crystal layer 3, ducting layer 4, grating layer, quantum dot chromatic filter layer 6, the and of first electrode 8
Second electrode 7, liquid crystal layer 3, grating layer, quantum dot chromatic filter layer 6, first electrode 8 and second electrode 7 are located at the and of ducting layer 4
Between first underlay substrate 2.First electrode 8 and second electrode 7 are used for the refractive index of adjustable liquid crystal display layer 3；Grating layer is used to control
Light is coupling luminous from ducting layer 4, and the coupling luminous coupling efficiency of ducting layer 4 is according to the refractive index of liquid crystal layer 3 and grating layer
The difference of refractive index is determined.
In the present embodiment, the coupling luminous coupling efficiency of ducting layer 4 is according to the refractive index of liquid crystal layer 3 and the refraction of grating layer
The change of the difference of rate and change.The voltage that can be loaded due to the refractive index of liquid crystal layer 3 according to first electrode 8 and second electrode 7
Pressure difference regulation, therefore when the pressure difference change for the voltage that first electrode 8 and second electrode 7 are loaded liquid crystal layer 3 refractive index
Change, so that the coupling luminous coupling efficiency of ducting layer 4 can also change.
Further, the display panel can also include the second underlay substrate 1, and the second underlay substrate 1 is located at ducting layer 4
Away from the first underlay substrate 2 side.In the present embodiment, when not including the second underlay substrate 1 in display panel, ducting layer
4 can also play a part of serving as the second underlay substrate 1, that is to say, that ducting layer and the second underlay substrate functionally close two and be
One.
The material of second underlay substrate 1 can be glass or resin, the material of the first underlay substrate 2 can for glass or
Person's resin.In actual applications, the second underlay substrate 1 and the first underlay substrate 2 can also be made of other materials, herein
It will not enumerate.
, in the present embodiment, second electrode 7 and first electrode 8 are located at the homonymy or not homonymy of liquid crystal layer 3.Preferably,
Two electrodes 7 are pixel electrode, and first electrode 8 is public electrode.
As shown in figure 1, second electrode 7 and first electrode 8 are located at the not homonymy of liquid crystal layer 3.Specifically, second electrode 7
In the side close to the second underlay substrate 1 of liquid crystal layer 3, first electrode 8 is located at close first underlay substrate 2 of liquid crystal layer 3
Side, now display panel can be twisted-nematic (Twisted Nematic, abbreviation TN) type display panel, vertical nematic
(Vertical Alignment, abbreviation VA) type display panel or electrically conerolled birefringence (Electrically Controlled
Birefringence, abbreviation ECB) display device.
Or, second electrode 7 and first electrode 8 are located at the homonymy of liquid crystal layer 3.Specifically, second electrode 7 and first electrode
8 are respectively positioned on the side close to the second underlay substrate 1 of liquid crystal layer 3., should when second electrode 7 and first electrode 8 are located at different layers
Display panel can be advanced super dimension switch (Advanced Super Dimension Switch, abbreviation ADS) display surface
Plate；When second electrode 7 and first electrode 8 are located at same layer, the display panel can be plane conversion (In-Plane
Switching, abbreviation IPS) display panel.No longer specifically draw herein.In actual applications, the display panel can also be
Other kinds of display panel, will not enumerate herein.
Quantum dot chromatic filter layer 6 may include red quantum dot pattern 61, green quantum dot pattern 62 and transparent resin figure
Shape 63, wherein, the generation red light under the exciting of the light of specific wavelength of red quantum dot pattern 61, green quantum dot pattern 62 exists
Generation green light under the exciting of the light of specific wavelength, transparent resin figure 63 directly transmits the light of specific wavelength, in such cases
The light of specific wavelength is blue light.Or, quantum dot chromatic filter layer 6 may include red quantum dot pattern, green quantum dot pattern
With blue quantum dot pattern, wherein, red quantum dot pattern generation red light under the exciting of the light of specific wavelength, green quantum
Dot pattern generation green light under the exciting of the light of specific wavelength, blue quantum dot pattern production under the exciting of the light of specific wavelength
Raw blue light, the light of specific wavelength can be the shorter light of other wavelength ratio blue light wavelengths in such cases, and such a situation is no longer
Specifically draw.Quantum dot chromatic filter layer 6 is located at the side close to the second underlay substrate 1 of the first underlay substrate 2.Actually should
In, quantum dot chromatic filter layer 6 may be located on the side away from the second underlay substrate 1 of the first underlay substrate 2, such a
Situation is no longer specifically drawn.
The material of liquid crystal layer 3 can be nematic liquid crystal, cholesteric liquid crystal or blue phase liquid crystal.Preferably, TN types are shown
Panel, VA types display panel and ADS types display panel typically each use nematic liquid crystal.Preferably, grating layer includes interval
In the shading strip 51 of setting, the covering grating layer of liquid crystal layer 3 and the gap 52 being filled between shading strip 51.The thickness of liquid crystal layer 3
More than the thickness of grating layer.The thickness of usual liquid crystal layer 3 is less than or equal to 200nm, then the thickness of liquid crystal layer 3 be more than 200nm and
Less than 20 μm, it is preferable that the thickness of liquid crystal layer 3 is 1 μm.The setting of the thickness of liquid crystal layer 3 can with can cover grating layer and
It is easy to the other specification of product to design (for example, electrical design, driving design etc.) for foundation.The thickness of liquid crystal layer 3 in the present embodiment
As long as degree covering grating layer thickness, therefore liquid crystal layer 3 thickness can set it is very thin, i.e., liquid crystal cell thickness can be set
It is very thin, so as to further increase the response time of liquid crystal.
As shown in figure 1, in the present embodiment, second electrode 7 is located at the side close to the first underlay substrate 2 of ducting layer 5, light
Gate layer is located at the side close to the first underlay substrate 1 of second electrode 7, and liquid crystal layer 3 is located at the close first substrate base of grating layer
The side of plate 2, first electrode 8 is located at the side close to the second underlay substrate 1 of the first underlay substrate 2.
Quantum dot chromatic filter layer 6 is located at the side close to the first underlay substrate 2 of first electrode 8, specifically, quantum dot
Chromatic filter layer is located between the first electrode 8 and the liquid crystal layer 3.
Specifically, grating layer is located between liquid crystal layer 3 and second electrode 7.The material of grating layer is transparent dielectric material, example
Such as, silica SiO2Or other organic resins.The scope of the refractive index of grating layer is the ordinary refraction index n of liquid crystal layer 3o
To the very optical index n of liquid crystal layer 3e, it is preferable that the refractive index of grating layer is the very optical index n of liquid crystal layer 3o.Grating
The scope of the thickness of layer includes but is not limited to 200nm to 1 μm, it is preferable that the thickness of grating layer is 500nm.In actual applications,
Because grating layer controls light not to be especially sensitive to the thickness of grating layer from the coupling luminous process of ducting layer 4, therefore can root
According to the thickness of setting grating layer is needed, for example, red pixel (red quantum dot pattern 61), green pixel (green quantum point diagram
Shape 62) and the thickness of blue pixel (transparent resin figure 63) corresponding grating layer can be with identical or difference.Preferably, grating
The dutycycle in the cycle of layer can be 0.5, but can be arranged as required to the dutycycle in cycle, example in actual product design
Such as, for the purpose or the purpose of balance display panel diverse location luminance difference for adjusting out luminous intensity.
Specifically, ducting layer 4 is located between the second underlay substrate 1 and second electrode 7.The material of ducting layer 4 can be
Bright material, for example, silicon nitride Si3N4.The scope of the thickness of ducting layer 4 includes but is not limited to 100nm to 10 μm, it is preferable that waveguide
The thickness of layer 4 is 100nm, the control in order to grating layer to light light direction and wavelength.Usual ducting layer 4 is single mode ripple
Lead, i.e., thickness is thin enough, but when the collimation of the light of side entering type collimated backlight is preferable or can be to being coupled into ripple
When pattern in conducting shell 4 control effectively, it can suitably relax the requirement of the thickness to ducting layer 4, for example, can be by waveguide
The thickness of layer 4 is arranged to hundreds of nanometers even several microns of thickness.Because the thickness of ducting layer 4 is much smaller than the thickness of second electrode 7
The thickness of degree and ducting layer 4 is much smaller than the thickness of the second underlay substrate 1, therefore the light that side entering type collimated backlight is sent is big absolutely
Part will be coupled into the underlay substrate 1 of second electrode 7 and second.In view of the light that side entering type collimated backlight is sent is impossible
Definitely collimation, always has the less angle of divergence, therefore the light being coupled into the underlay substrate 1 of second electrode 7 and second can also have
There is less dispersion angle.Again due to refractive index of the refractive index less than ducting layer 4 of second electrode 7, and the second underlay substrate 1
Refractive index is less than the refractive index of ducting layer 4, therefore light in the underlay substrate 1 of second electrode 7 and second can not quilt well
Constraint, but be injected into ducting layer 4, supplement waveguide mode the declining caused by propagation or grating layer coupling of ducting layer 4
Subtract, to sum up shown, the underlay substrate 1 of second electrode 7 and second act as the effect of assistant waveguide.
Further, the display panel also includes scattering film 9.Scattering film 9 is located at remote the second of the first underlay substrate 2
The side of underlay substrate 1.The effect of scattering film 9 is that the angle that will be coupled out under the control of grating layer from ducting layer 4 is smaller
Or the larger light of angle is scattered, so as to improve the visual angle of display panel.
Further, alternatively, the display panel (does not show also including being arranged at the alignment film of the both sides of liquid crystal layer 3 in figure
Go out).Specifically, alignment film can be set on quantum dot chromatic filter layer 6, and alignment film is set on grating layer.Set
Alignment film can control the initial alignment state of the liquid crystal molecule in liquid crystal layer 3, so that it is guaranteed that liquid crystal molecule can apply voltage
Under to be rotated in the intended manner to determine be normally-black display pattern or normal white display pattern.It should be noted that：When
When the material of liquid crystal layer 3 is blue phase liquid crystal, orientation can be not provided with because blue phase liquid crystal need not be orientated, therefore in display panel
Film.
Further, the display panel also includes grid line, data wire and thin film transistor (TFT).The grid line, data wire and film
Transistor can be located between ducting layer 4 and second electrode 7.Thin film transistor (TFT) includes grid, active layer, source electrode and drain electrode, second
Electrode 7 is connected with the drain electrode of thin film transistor (TFT).Thin film transistor (TFT) is not shown in Fig. 1.
As a preferred embodiment, as shown in figure 1, the display panel may include the color membrane substrates being oppositely arranged and array
Substrate, wherein, array base palte includes the second underlay substrate 1, ducting layer 4, second electrode 7 and the grating layer set gradually, color film
Substrate includes the first underlay substrate 2, first electrode 8 and quantum dot chromatic filter layer 6, color membrane substrates and the array set gradually
Liquid crystal layer 3 is provided between substrate.
Fig. 2 is grating waveguide coupling schematic diagram in Fig. 1, as shown in Fig. 2 liquid crystal layer 3, grating layer and the formation of ducting layer 4 can
Become grating coupler, the iris shutter coupler can be by the effective coupled into waveguide layer 4 of light or by light from ducting layer 4
It is coupled out.When incident light or emergent light meet phase matching relationship βq=βmDuring-qK (q=0, ± 1, ± 2 ...), incident light
M ranks guided mode or m ranks guided mode can be excited to be coupled out on to direction in ducting layer 4, wherein, β q are incident light
Propagation constant, βmFor the propagation constant of m rank guided modes, q is diffraction time, and K is grating vector.Due to β m=k0Nm, K=2 π/
Λ, therefore above-mentioned phase matching relationship formula can be further expressed as：K0ncsin θ i=k0Nm-q2 π/Λ (q=0, ± 1, ±
2 ...), wherein, k0=2 π/λ, nc is the refractive index of liquid crystal layer 3, θ i be incident light wave vector direction and vertical direction angle or
Person's light extraction light wave swears the angle of direction and vertical direction, and Nm is the effective refractive index of m rank guided modes, and Λ is the cycle of grating layer.From
Above-mentioned phase matching relationship formula can be seen that the refractive index n for changing liquid crystal layer 3cGrating layer can be caused to control light from ripple
The coupling luminous coupling efficiency of conducting shell 4, coupling efficiency is related to the refractive index difference of liquid crystal layer 3 and grating layer.The week of grating layer
Phase is usual all smaller (for example, several microns or hundreds of nanometers), therefore the size of pixel can be made very small, therefore the display surface
The structure of plate is also a kind of to realize the ideal chose that high PPI is shown.
Alternatively, if as shown in Fig. 2 the material of the second underlay substrate 1 is transparent medium, phase matching relationship formula β q
=β m-qK (q=0, ± 1, ± 2 ...) can be further expressed as： k0nssinθi=k0Nm- q2 π/Λ (q=0, ± 1, ±
2 ...), wherein, nsFor the refractive index of the second underlay substrate 1, light can be coupled into waveguide from the side of the second underlay substrate 1
Layer 4, then couples from ducting layer 4 and exports.
In the present embodiment, by adjusting the pressure difference of the voltage between second electrode 7 and first electrode 8 with adjustable liquid crystal display layer 3
Refractive index, when the variations in refractive index of liquid crystal layer 3, the difference of the refractive index of liquid crystal layer 3 and the refractive index of grating layer can also be sent out
Changing, therefore can be by controlling the difference of the refractive index of liquid crystal layer 3 and the refractive index of grating layer to control ducting layer 4 coupling luminous
Coupling efficiency.
If the difference of the refractive index of liquid crystal layer 3 and the refractive index of grating layer is 0, the coupling luminous coupling effect of ducting layer 4
Rate is 0, so that display panel is in normally-black display pattern (L0 patterns).The effect of grating layer is blanked in such cases, is not had
Light is coupled out from ducting layer 4, and now display panel is in normally-black display pattern.
If the absolute value of the difference of the refractive index of liquid crystal layer 3 and the refractive index of grating layer is setting difference, the coupling of ducting layer 4
It is setting coupling efficiency to close the coupling efficiency of light extraction, so that display panel is in often white display pattern (L255 patterns).Such a feelings
The absolute value of the difference of the refractive index of liquid crystal layer 3 and the refractive index of grating layer is setting difference under condition, and the refractive index of grating layer is
Fixed, therefore can be in ordinary refraction index noVery optical index neBetween adjustable liquid crystal display layer 3 refractive index cause after regulation
The refractive index of liquid crystal layer 3 and the absolute value of difference of refractive index of grating layer be maximum difference, now set difference to be maximum
Difference, the corresponding coupling efficiency that sets is maximum coupling efficiency, and the effect of grating layer is maximum, the light being coupled out from ducting layer 4
Amount of light it is maximum, now display panel is in often white display pattern.
If the absolute value of the difference of the refractive index of liquid crystal layer 3 and the refractive index of grating layer is more than 0 and is less than setting difference,
The coupling luminous coupling efficiency of ducting layer 4 is more than 0 and less than setting coupling efficiency, so that display panel is in normally-black display pattern
With other GTG display patterns outside normal white display pattern.Now coupling efficiency is between 0 and maximum coupling efficiency, so that
So that display panel is in other GTG display patterns.The difference of the refractive index of adjustable liquid crystal display layer 3 and the refractive index of grating layer, can
So that display panel is in different GTG display patterns.
In the display panel that the present embodiment is provided, the display panel includes the first underlay substrate, liquid crystal layer, ducting layer, light
Gate layer, quantum dot chromatic filter layer, first electrode and second electrode, the refraction of first electrode and second electrode adjustable liquid crystal layer
Rate, grating layer control light is coupling luminous from ducting layer, and the coupling luminous coupling efficiency of ducting layer is according to the refractive index of liquid crystal layer
Determined with the difference of the refractive index of grating layer, without set polarizer in display panel in the present embodiment, it is to avoid quantum dot
The problem of depolarization, so that quanta point material is applicable in liquid crystal display device；Without in display surface in the present embodiment
Polarizer is set in plate, so as to improve the transmitance of display panel；Without setting polarization in display panel in the present embodiment
Piece, therefore the overall phase-delay quantity of liquid crystal layer need not be required so that it is relatively thin that liquid crystal cell thickness can be set, so as to improve liquid
The brilliant response time.Because the transmitance of the display panel of the present embodiment is higher, therefore the display panel can be applied to transparent show
Show in product.Display panel is using quanta point material as color film in the present embodiment, and it goes out, and optical wavelength half-peak breadth is very narrow, and color is pure
And colour gamut is high.
Fig. 3 is a kind of structural representation for display panel that the utility model embodiment two is provided, as shown in figure 3, this reality
Apply example and the difference of above-described embodiment one is, quantum dot chromatic filter layer 6 is located at leaning on for the second underlay substrate 1 in the present embodiment
The side of nearly first underlay substrate 2.Specifically, quantum dot chromatic filter layer 6 is located between second electrode 7 and grating layer.Remaining
Description can be found in above-described embodiment one, no longer specifically describe herein.
In the present embodiment, because quantum dot chromatic filter layer 6 is located at the side of the second underlay substrate 1, therefore the second substrate
Substrate 1, ducting layer 4, second electrode 7, quantum dot chromatic filter layer 6 and grating layer form color membrane array substrate (color
Filter on array, abbreviation COA).
In the display panel that the present embodiment is provided, the display panel includes the first underlay substrate, liquid crystal layer, ducting layer, light
Gate layer, quantum dot chromatic filter layer, first electrode and second electrode, the refraction of first electrode and second electrode adjustable liquid crystal layer
Rate, grating layer control light is coupling luminous from ducting layer, and the coupling luminous coupling efficiency of ducting layer is according to the refractive index of liquid crystal layer
Determined with the difference of the refractive index of grating layer, without set polarizer in display panel in the present embodiment, it is to avoid quantum dot
The problem of depolarization, so that quanta point material is applicable in liquid crystal display device；Without in display surface in the present embodiment
Polarizer is set in plate, so as to improve the transmitance of display panel；Without setting polarization in display panel in the present embodiment
Piece, therefore the overall phase-delay quantity of liquid crystal layer need not be required so that it is relatively thin that liquid crystal cell thickness can be set, so as to improve liquid
The brilliant response time.Because the transmitance of the display panel of the present embodiment is higher, therefore the display panel can be applied to transparent show
Show in product.Display panel is using quanta point material as color film in the present embodiment, and it goes out, and optical wavelength half-peak breadth is very narrow, and color is pure
And colour gamut is high.
Fig. 4 is a kind of structural representation for display device that the utility model embodiment three is provided, as shown in figure 4, this is aobvious
Showing device includes：Backlight 10 and display panel.
In the present embodiment, backlight 10 is located at the side of display panel, therefore the backlight of the present embodiment is carried on the back for side entering type
Light source.In actual applications, the backlight of other forms can also be used, for example, backlight can be direct-light-type backlight, this
The situation of kind is no longer specifically drawn.
Backlight 10 may include LED/light source or the light source of other patterns, wherein, LED chip may include blue-ray LED or
The shorter LED of other wavelength ratio blue light wavelengths, the light source of other patterns can be LASER Light Source.Alternatively, when backlight 10 is
During LASER Light Source, backlight 10 light emission side (i.e.：Between backlight 10 and display panel) it can also set and expand structure,
This expands structure and can expanded the laser point light source that LASER Light Source is sent as collimated light source, while also increasing the straight of light beam
Footpath.
Backlight 10 is at least correspondingly arranged with ducting layer 4, flat where the light direction and ducting layer 4 of the light of backlight 10
Face is parallel.As shown in figure 1, backlight 10 is correspondingly arranged with the second underlay substrate 1, ducting layer 4 and second electrode 7, and backlight
10 width can be the width sum of the second underlay substrate 1, ducting layer 4 and second electrode 7.In actual applications, backlight
10 width may be arranged as other width, but not to be advisable to liquid crystal layer 3 and each layer of liquid crystal layer more than 3 transmitting light,
Because the outside of liquid crystal layer 3 is provided with sealant, therefore the light launched to liquid crystal layer 3 will not inject liquid crystal layer 3.
Preferably, the light that backlight 10 is sent is collimated light.Particularly, when backlight 10 is LASER Light Source, backlight
10 light sent turn into collimated light in the presence of structure is expanded.And in the present embodiment, the light that backlight 10 is sent is blue light.
Display panel in the present embodiment is specifically described and can be found in embodiment one using the display panel shown in Fig. 1
Description, here is omitted.
Alternatively, the display panel in the present embodiment can also can be joined using the display panel shown in Fig. 2, specific descriptions
The description seen in embodiment two, no longer specifically draws herein.
In the present embodiment, display device can be ECB display devices, TN display devices, VA display devices, IPS display dresses
Put or ADS display devices.
Fig. 5 a are a kind of display pattern schematic diagram when display device is ECB display devices, and Fig. 5 b are that display device is
Another display pattern schematic diagram during ECB display devices.As shown in Fig. 5 a and Fig. 5 b, the material of liquid crystal layer 3 can be nematic
Phase liquid crystal.As shown in Figure 5 a, the difference of the voltage of regulation second electrode 7 and first electrode 8 is with the liquid crystal point of adjustable liquid crystal display layer 3
The orientation of son, so that the refractive index of liquid crystal layer 3 is equal to the refractive index of grating layer, now grating layer control light can not be from
Ducting layer 4 is coupling luminous, therefore ECB display devices are in normally-black display pattern.As shown in Figure 5 b, regulation second electrode 7 and the
The difference of the voltage of one electrode 8 with adjustable liquid crystal display layer 3 liquid crystal molecule orientation so that the refractive index of liquid crystal layer 3 with
The absolute value of the difference of the refractive index of grating layer is setting difference, and this sets difference as maximum difference, now grating layer control light
Line is setting light extraction efficiency from the coupling luminous light extraction efficiency of ducting layer 4, and this sets light extraction efficiency as maximum light extraction efficiency, therefore
ECB display devices are made to be in often white display pattern.It should be noted that：The filling figure of liquid crystal layer 3 is only in Fig. 5 a and Fig. 5 b
The orientation for representing liquid crystal molecule in two figures is different, and the limit of the orientation to liquid crystal molecule is not constituted herein
It is fixed.
Fig. 6 a are a kind of display pattern schematic diagram when display device is IPS display devices, and Fig. 6 b are that display device is
The display device in display device and Fig. 4 in another display pattern schematic diagram during IPS display devices, Fig. 6 a and Fig. 6 b
Difference is that second electrode 7 and first electrode 8 are respectively positioned between ducting layer 4 and grating layer, second electrode 7 and first electrode 8
It is arranged alternately in same layer and second electrode 7 and first electrode 8.As shown in figures 6 a and 6b, the material of liquid crystal layer 3 can be to
Row phase liquid crystal.As shown in Figure 6 a, the difference of the voltage of regulation second electrode 7 and first electrode 8 is with the liquid crystal point of adjustable liquid crystal display layer 3
The orientation of son, so that the refractive index of liquid crystal layer 3 is equal to the refractive index of grating layer, now grating layer control light can not be from
Ducting layer 4 is coupling luminous, therefore IPS display devices are in normally-black display pattern.As shown in Figure 6 b, regulation second electrode 7 and the
The difference of the voltage of one electrode 8 with adjustable liquid crystal display layer 3 liquid crystal molecule orientation so that the refractive index of liquid crystal layer 3 with
The absolute value of the difference of the refractive index of grating layer is setting difference, and this sets difference as maximum difference, now grating layer control light
Line is setting light extraction efficiency from the coupling luminous light extraction efficiency of ducting layer 4, and this sets light extraction efficiency as maximum light extraction efficiency, therefore
IPS display devices are made to be in often white display pattern.It should be noted that：The filling figure of liquid crystal layer 3 is only in Fig. 6 a and Fig. 6 b
The orientation for representing liquid crystal molecule in two figures is different, and the limit of the orientation to liquid crystal molecule is not constituted herein
It is fixed.
Fig. 7 a are a kind of display pattern schematic diagram when display device is IPS display devices, and Fig. 7 b are that display device is
The display device in display device and Fig. 4 in another display pattern schematic diagram during IPS display devices, Fig. 7 a and Fig. 7 b
Difference is that second electrode 7 and first electrode 8 are respectively positioned between ducting layer 4 and grating layer, second electrode 7 and first electrode 8
It is arranged alternately in same layer and second electrode 7 and first electrode 8.As shown in figs. 7 a and 7b, the material of liquid crystal layer 3 can be indigo plant
Phase liquid crystal.As shown in Figure 7a, the difference of the voltage of regulation second electrode 7 and first electrode 8 is with the liquid crystal molecule of adjustable liquid crystal display layer 3
Isotropism, so that the refractive index of liquid crystal layer 3 is equal to the refractive index of grating layer, now grating layer control light can not be from waveguide
Layer 4 is coupling luminous, therefore IPS display devices are in normally-black display pattern.As shown in Figure 7b, the electricity of regulation second electrode 7 and first
The difference of the voltage of pole 8 is with the liquid crystal molecule anisotropy of adjustable liquid crystal display layer 3, so that the refractive index and grating layer of liquid crystal layer 3
The absolute value of difference of refractive index be setting difference, this sets difference as maximum difference, and now grating layer control light is from ripple
The coupling luminous light extraction efficiency of conducting shell 4 is setting light extraction efficiency, and this sets light extraction efficiency as maximum light extraction efficiency, therefore makes IPS
Display device is in often white display pattern.It should be noted that：The filling figure of liquid crystal layer 3 is only to represent in Fig. 7 a and Fig. 7 b
Liquid crystal molecule is isotropically or anisotropically, the restriction to liquid crystal molecule not to be constituted herein in two figures.
Fig. 8 a are a kind of display pattern schematic diagram when display device is VA display devices, and Fig. 8 b are that display device is that VA shows
Another display pattern schematic diagram during showing device.As figures 8 a and 8 b show, the material of liquid crystal layer 3 can be blue phase liquid crystal.
As shown in Figure 8 a, the difference of the voltage of regulation second electrode 7 and first electrode 8 is each to same with the liquid crystal molecule of adjustable liquid crystal display layer 3
Property, so that the refractive index of liquid crystal layer 3 is equal to the refractive index of grating layer, now grating layer control light can not be from the coupling of ducting layer 4
Light extraction is closed, therefore VA display devices are in normally-black display pattern.As shown in Figure 8 b, the electricity of regulation second electrode 7 and first electrode 8
The difference of pressure is with the liquid crystal molecule anisotropy of adjustable liquid crystal display layer 3, so that the refractive index and the refractive index of grating layer of liquid crystal layer 3
Difference absolute value for setting difference, this sets difference as maximum difference, now grating layer control light coupled from ducting layer 4
The light extraction efficiency of light extraction is setting light extraction efficiency, and this sets light extraction efficiency as maximum light extraction efficiency, therefore makes at VA display devices
In normal white display pattern.It should be noted that：The filling figure of liquid crystal layer 3 is only to represent liquid in two figures in Fig. 8 a and Fig. 8 b
Brilliant molecule is isotropically or anisotropically, the restriction to liquid crystal molecule not to be constituted herein.
Fig. 9 a are a kind of display pattern schematic diagram when display device is VA display devices, and Fig. 9 b are that display device is that VA shows
Another display pattern schematic diagram during showing device.As shown in figures 9 a and 9b, the material of liquid crystal layer 3 can be nematic phase liquid
It is brilliant.As illustrated in fig. 9, the difference of the voltage of regulation second electrode 7 and first electrode 8 is with the liquid crystal molecule of adjustable liquid crystal display layer 3
Orientation, so that the refractive index of liquid crystal layer 3 is equal to the refractive index of grating layer, now grating layer control light can not be from waveguide
Layer 4 is coupling luminous, therefore ECB display devices are in normally-black display pattern.As shown in figure 9b, the electricity of regulation second electrode 7 and first
The difference of the voltage of pole 8 is with the orientation of the liquid crystal molecule of adjustable liquid crystal display layer 3, so that the refractive index and grating of liquid crystal layer 3
Layer refractive index difference absolute value for setting difference, this sets difference as maximum difference, now grating layer control light from
The coupling luminous light extraction efficiency of ducting layer 4 is setting light extraction efficiency, and this sets light extraction efficiency as maximum light extraction efficiency, therefore makes VA
Display device is in often white display pattern.It should be noted that：The filling figure of liquid crystal layer 3 is only to represent in Fig. 9 a and Fig. 9 b
The orientation of liquid crystal molecule is different in two figures, and the restriction of the orientation to liquid crystal molecule is not constituted herein.
In the present embodiment, when display device is ECB display devices or VA display devices, exist due to only having direction of vibration
E light polarization light in paper (section shown in each accompanying drawing) can just experience the change of the refractive index of liquid crystal layer 3, and direction of vibration hangs down
The change of straight refractive index of the o light polarization photoreception less than liquid crystal layer 3 in paper, therefore the light being coupled out from ducting layer 4 is e
Light polarization light, by control the deflection of liquid crystal molecule of liquid crystal layer 3 can just control e light polarization light coupling efficiency size,
So as to realize that GTG is shown.So when display device is ECB display devices or VA display devices, in display device without
Set polarizer just can generate a kind of polarised light of direction of vibration in display panel, so as to realize without being set in display panel
Polarizer can just realize that GTG is shown.
In the present embodiment, when display device is IPS display devices, because direction of vibration (is cut in paper shown in each accompanying drawing
Face) interior e light polarization light and direction of vibration can experience perpendicular to the o light polarization light of paper the refractive index of liquid crystal layer 3
Change, can so cause display device not possess good dark-state and show, therefore can set inclined in the light emission side of backlight 10
Vibrating device, the light sent from backlight 10 forms a kind of light of direction of vibration after polarising means, for example, a kind of vibration side
To light can be o light polarization light or e light polarization light, so when display device is IPS display devices, nothing in display panel
Polarizer need to be set, only set a polarising means just to generate a kind of vibration side in the light emission side of backlight 10 (outside display panel)
To polarised light, so as to realize without setting two layers of polarizer just to realize that GTG is shown in display panel.
Different display patterns is illustrated only by taking the display device of several types as an example above, remaining type is shown
The display pattern of showing device will not enumerate.
In the display device that the present embodiment is provided, display panel includes the second underlay substrate, the first underlay substrate, liquid crystal
Layer, ducting layer, grating layer, quantum dot chromatic filter layer, first electrode and second electrode, first electrode and second electrode can adjust
The refractive index of liquid crystal layer, grating layer control light is coupling luminous from ducting layer, and the coupling luminous coupling efficiency of ducting layer is according to liquid
The difference of the refractive index of crystal layer and the refractive index of grating layer is determined, without setting polarizer in display panel in the present embodiment,
The problem of avoiding quantum dot depolarization, so that quanta point material is applicable in liquid crystal display device；In the present embodiment
Without setting polarizer in display panel, so as to improve the transmitance of display device；Without in display surface in the present embodiment
Polarizer is set in plate, therefore the overall phase-delay quantity of liquid crystal layer need not be required so that it is relatively thin that liquid crystal cell thickness can be set,
So as to improve the response time of liquid crystal.Because the transmitance of the display device of the present embodiment is higher, therefore the display device can
Applied in Transparence Display product.Display device is using quanta point material as color film in the present embodiment, and it goes out optical wavelength half-peak
Wide very narrow, color is pure and colour gamut is high.
It is understood that embodiment of above be merely to illustrate that principle of the present utility model and use it is exemplary
Embodiment, but the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, and these variations and modifications are also considered as this reality
With new protection domain.
Claims (13)
1. a kind of display panel, it is characterised in that including：First underlay substrate, liquid crystal layer, ducting layer, grating layer, quantum stippling
Color filtering optical layer, first electrode and second electrode, the liquid crystal layer, the grating layer, the quantum dot chromatic filter layer, described
One electrode and the second electrode are located between the ducting layer and first underlay substrate, and the grating layer is located at the ripple
The side of the close liquid crystal layer of conducting shell；
The first electrode and the second electrode are used for the refractive index for adjusting the liquid crystal layer；
The grating layer is used to control light coupling luminous from the ducting layer, the coupling luminous coupling efficiency root of the ducting layer
According to the liquid crystal layer refractive index and the grating layer refractive index difference determine.
2. display panel according to claim 1, it is characterised in that the second electrode and the first electrode are located at institute
State the homonymy or not homonymy of liquid crystal layer.
3. display panel according to claim 1, it is characterised in that the scope of the refractive index of the grating layer is liquid crystal layer
Ordinary refraction index noTo the very optical index n of liquid crystal layere。
4. display panel according to claim 3, it is characterised in that the refractive index of the grating layer be liquid crystal layer very
Optical index no。
5. display panel according to claim 1, it is characterised in that also include：Second underlay substrate, second substrate
Substrate is located at the side of remote first underlay substrate of the ducting layer.
6. display panel according to claim 5, it is characterised in that the second electrode is located at the close of the ducting layer
The side of first underlay substrate, the grating layer is located at the one of close first underlay substrate of the second electrode
Side, the liquid crystal layer is located at the side of close first underlay substrate of the grating layer；
The first electrode is located at the side of close second underlay substrate of first underlay substrate.
7. display panel according to claim 6, it is characterised in that the quantum dot chromatic filter layer is located at described first
The side close to the first underlay substrate of electrode；Or, the quantum dot chromatic filter layer is located at the second electrode and described
Between grating layer.
8. display panel according to claim 7, it is characterised in that the refractive index of the second electrode is less than the waveguide
The refractive index of layer, the refractive index of second underlay substrate is less than the refractive index of the ducting layer.
9. according to any described display panel of claim 1 to 8, it is characterised in that the material of the liquid crystal layer can be to
Row phase liquid crystal, cholesteric liquid crystal or blue phase liquid crystal.
10. according to any described display panel of claim 1 to 8, it is characterised in that the grating layer includes spaced
In shading strip, the gap that the liquid crystal layer covers the grating layer and is filled between the shading strip, the thickness of the liquid crystal layer
Thickness of the degree more than the grating layer.
11. display panel according to claim 1, it is characterised in that
If the difference of the refractive index of the liquid crystal layer and the refractive index of the grating layer is 0, the ducting layer is coupling luminous
Coupling efficiency is 0, so that the display panel is in normally-black display pattern；Or
If the absolute value of the refractive index of the liquid crystal layer and the difference of the refractive index of the grating layer is setting difference, the ripple
The coupling luminous coupling efficiency of conducting shell is setting coupling efficiency, so that the display panel is in often white display pattern；Or
If the absolute value of the refractive index of the liquid crystal layer and the difference of the refractive index of the grating layer is more than 0 and less than the setting
During difference, the coupling luminous coupling efficiency of the ducting layer is more than 0 and less than setting coupling efficiency, so that at the display panel
Other GTG display patterns outside normally-black display pattern and Chang Bai display patterns.
12. a kind of display device, it is characterised in that including：Backlight and any described display panel of claim 1 to 11.
13. display device according to claim 12, it is characterised in that the backlight is located at the side of the display panel
Side, the backlight is at least correspondingly arranged with the ducting layer, the light direction of the light of the backlight and the ducting layer
Place plane is parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621101087.2U CN206387979U (en) | 2016-09-30 | 2016-09-30 | Display panel and display device |
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| CN201621101087.2U CN206387979U (en) | 2016-09-30 | 2016-09-30 | Display panel and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292049A (en) * | 2016-09-30 | 2017-01-04 | 京东方科技集团股份有限公司 | Display floater and display device |
| CN110537142A (en) * | 2018-03-27 | 2019-12-03 | 松下知识产权经营株式会社 | Light device and optical detection system |
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2016
- 2016-09-30 CN CN201621101087.2U patent/CN206387979U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292049A (en) * | 2016-09-30 | 2017-01-04 | 京东方科技集团股份有限公司 | Display floater and display device |
| WO2018059083A1 (en) * | 2016-09-30 | 2018-04-05 | 京东方科技集团股份有限公司 | Display panel and display device |
| US10620469B2 (en) | 2016-09-30 | 2020-04-14 | Boe Technology Group Co., Ltd. | Display panel and display device |
| CN110537142A (en) * | 2018-03-27 | 2019-12-03 | 松下知识产权经营株式会社 | Light device and optical detection system |
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