CN107154420A - A kind of display panel and its manufacture method, display device - Google Patents
A kind of display panel and its manufacture method, display device Download PDFInfo
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- CN107154420A CN107154420A CN201710320500.7A CN201710320500A CN107154420A CN 107154420 A CN107154420 A CN 107154420A CN 201710320500 A CN201710320500 A CN 201710320500A CN 107154420 A CN107154420 A CN 107154420A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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Abstract
The embodiment of the present invention provides a kind of display panel and its manufacture method, display device, is related to display technology field, can solve the problem that the problem of blue light light extraction efficiency is relatively low during existing OLED display panel colour display.Multiple electro-luminescence display devices including underlay substrate and positioned at underlay substrate side, electro-luminescence display device is used to emit white light, also include the colored display structure for being arranged at electro-luminescence display device light emission side, colour shows that structure includes the Red lightscreening plate being correspondingly arranged in each red sub-pixel unit, the green color filter being correspondingly arranged in each green sub-pixels unit and the wire grating polarization layer being correspondingly arranged in each blue subpixels unit, for passing through the blue light of correspondence blue subpixels unit.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of display panel and its manufacture method, display device.
Background technology
With the development and progress of Display Technique, for existing display device, Organic Light Emitting Diode
(Organic Light Emitting Diode, OLED) as a kind of current mode luminescent device, because its self-luminous,
Quick response, wide viewing angle and it is applied to more and more among high-performance display field the features such as available for Flexible Displays.
OLED colorization Display Technique generally includes three kinds of modes：RGB (RGB) pixel independently lights, Color Conversion
(Color Conversion) and color filter film (Color Filter).Rgb pixel independently light be using metal shadow mask with
CCD pixel technique of counterpoint, prepares the centre of luminescence of red, green, blue three primary colours first, then adjusts the colour mixture of three kinds of color combinations
Than producing RGB, making three color OLED elements independently light to constitute a pixel.The essence that this technology is etched to metal shadow mask
Degree requires higher, meanwhile, if the excitation and luminous efficiency of luminescent material are bad, OLED colored display can be had a strong impact on
Effect.The OLED of blue light-emitting is prepared during Color Conversion first, different Color Conversions are then excited using the blue light sent
Material obtains feux rouges and green glow, so as to realize full-color EL display.But this mode is when carrying out full-color EL display, Color Conversion material
Material easily causes the contrast of display image to decline due to absorbing the blue light in environment, causes image quality to reduce.It is colored
Filter coating is to prepare the OLED that emits white light, after color filter film of the white light sent by including red, green, blue three primary colours
To red, green, blue three primary colours, so as to realize OLED colored display.This mode does not need high-precision metal shadow mask to etch, easily
In realization, it is not easy to be influenceed by external environment, stability of photoluminescence is good, is commonly used in the prior art to realize OLED full colors
The technology of display.
In the white light that OLED is sent, blue light is relatively low relative to the luminous efficiency of feux rouges and green glow, pushing away over time
The brightness decay for moving blue light is also very fast, on this basis, because the transmitance of blue color film is relatively low, greatly affected colored aobvious
The light extraction efficiency of limited blue light in showing, during the colored display for causing OLED display device, it is necessary to increase whole OLED devices
The luminous power consumption of part could improve the light extraction efficiency of blue light.
The content of the invention
The embodiment of the present invention provides a kind of display panel and its manufacture method, display device, can solve the problem that existing OLED
The problem of blue light light extraction efficiency is relatively low during display panel colour display.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
The one side of the embodiment of the present invention is there is provided a kind of display panel, including underlay substrate and positioned at underlay substrate one
Multiple electro-luminescence display devices of side, electro-luminescence display device is used to emit white light, in addition to is arranged at electroluminance display
The colored of device light emission side shows structure, and colour shows that structure is red in each red sub-pixel unit including being correspondingly arranged at
Colo(u)r filter, the green color filter being correspondingly arranged in each green sub-pixels unit and be correspondingly arranged at each blueness
Wire grating polarization layer in sub-pixel unit, for passing through the blue light of correspondence blue subpixels unit.
Further, in addition to quarter wave plate and polarizer, quarter wave plate is arranged on wire grating polarization layer close to electroluminescent hair
The side of light display device, polarizer is arranged on the side that colored display structure deviates from electro-luminescence display device.Wherein, 1/4
Angle is 45 ° between the quick shaft direction of wave plate and the wire grating bearing of trend of wire grating polarization layer, the between axlemolecules of polarizer
Direction is identical with the wire grating bearing of trend of wire grating polarization layer.
It is preferred that, colour shows that Red lightscreening plate and green color filter are arranged at quarter wave plate close to electroluminescent in structure
Show the side of structure.
It is preferred that, polarizer is absorptive polarizers.
Further, the material of wire grating polarization layer includes one kind in aluminium, gold or chromium.
It is preferred that, the line width of the wire grating of wire grating polarization layer is between 110nm-150nm, the cycle is in 230nm-
Between 270nm.
It is preferred that, the height of the wire grating of wire grating polarization layer is between 250nm-290nm.
There is provided the display panel of a kind of display device, including any of the above-described for the another aspect of the embodiment of the present invention.
The another further aspect of the embodiment of the present invention there is provided a kind of manufacture method of display panel, including, the one of underlay substrate
Side forms multiple electro-luminescence display devices, and electro-luminescence display device emits white light in the energized state.In electroluminance display
The light emission side of device forms colored display structure, and colour shows that structure includes being correspondingly arranged in each red sub-pixel unit
Red lightscreening plate, the green color filter that is correspondingly arranged in each green sub-pixels unit and be correspondingly arranged at each
Wire grating polarization layer in blue subpixels unit, wire grating polarization layer is used to make the blue light of correspondence blue subpixels unit
Through.
Further, when display panel also includes quarter wave plate and polarizer, manufacture method also includes：It is inclined in wire grating
The layer that shakes sets quarter wave plate close to the side of electro-luminescence display device, shows that structure deviates from electro-luminescence display device in colour
Side set polarizer.Wherein, between the quick shaft direction of quarter wave plate and the wire grating bearing of trend of wire grating polarization layer
Angle is 45 °, and the transmission direction of principal axis of polarizer is identical with the wire grating bearing of trend of wire grating polarization layer.
The embodiment of the present invention provides a kind of display panel and its manufacture method, display device, including underlay substrate and position
Multiple electro-luminescence display devices in underlay substrate side, electro-luminescence display device is used to emit white light, in addition to is arranged at
The colored of electro-luminescence display device light emission side shows structure, and colour shows that structure includes being correspondingly arranged at each red sub- picture
Red lightscreening plate in plain unit, the green color filter being correspondingly arranged in each green sub-pixels unit and it is correspondingly arranged
Wire grating polarization layer in each blue subpixels unit, for passing through the blue light of correspondence blue subpixels unit.
In the white light that the light emission side of electro-luminescence display device is sent, include red, green and blue light, structure is shown by colour
In the Red lightscreening plate that is correspondingly arranged in each red sub-pixel unit and be correspondingly arranged at each green sub-pixels list
Green color filter in member causes red sub-pixel unit to realize that red light is shown, green sub-pixels unit realizes that green light shows
Show, meanwhile, colour is shown in structure is provided with wire grating polarization layer in each blue subpixels unit of correspondence, for making indigo plant
Color sub-pixel unit realizes that blue light is shown, so as to realize the colored display of display panel.Due to the indigo plant of wire grating polarization layer
Light transmission rate is higher than the blue light transmitance of blue color filter, so that effectively raise blue light in display panel goes out light efficiency
Rate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of display panel provided in an embodiment of the present invention；
Fig. 2 is the spectrogram of the transmitance of wire grating polarization layer provided in an embodiment of the present invention correspondence different wave length；
Fig. 3 is also to include the structure of quarter wave plate and polarizer 50 in a kind of display panel provided in an embodiment of the present invention
Schematic diagram；
Fig. 4 is that Red lightscreening plate in a kind of display panel provided in an embodiment of the present invention and green color filter are arranged at 1/4
Structural representation of the wave plate close to the side of electroluminance display structure；
Fig. 5 is the enlarged drawing of wire grating polarization layer provided in an embodiment of the present invention；
Fig. 6 is a kind of one of flow chart of manufacture method of display panel provided in an embodiment of the present invention；
Fig. 7 is the two of a kind of flow chart of the manufacture method of display panel provided in an embodiment of the present invention.
Reference：
10- underlay substrates；20- electro-luminescence display devices；30- colours show structure；31- Red lightscreening plates；32- greens
Optical filter；33- wire grating polarization layers；40-1/4 wave plates；50- polarizers；A- red sub-pixel units；B- green sub-pixels lists
Member；C- blue subpixels units；The height of H- wire grating polarization layers；The cycle of T- wire grating polarization layers；W- wire gratings
The line width of polarization layer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of display panel, as shown in figure 1, including underlay substrate 10 and positioned at underlay substrate
Multiple electro-luminescence display devices 20 of 10 sides, electro-luminescence display device 20 is used to emit white light, in addition to is arranged at electroluminescent
The colored of the light emission side of light-emitting display device 20 shows structure 30, and colour shows that structure 30 is red sub- including being correspondingly arranged at each
Red lightscreening plate 31 in pixel cell A, the green color filter 32 being correspondingly arranged in each green sub-pixels unit B and
The wire grating polarization layer 33 in each blue subpixels unit C is correspondingly arranged at, for making correspondence blue subpixels unit C
Blue light pass through.
It should be noted that first, the display panel of the embodiment of the present invention, the multiple electricity set in the side of underlay substrate 10
Electroluminescent display part 20 is used to emit white light, and forms the OLED emitted white light.The light extraction of multiple electro-luminescence display devices 20
The white light that side is sent is shown in structure 30 in colour, is shown by colour and colored display is realized after structure 30.
Second, colour shows that structure 30 is Red lightscreening plate 31, electroluminescent hair in correspondence each red sub-pixel unit A
The white light that the light emission side of light display device 20 is sent is after the Red lightscreening plate 31 in each red sub-pixel unit A, only
There is feux rouges outgoing, the light of other wavelength is stopped by Red lightscreening plate 31 and is unable to outgoing, so as to realize each red sub-pixel
Unit A correspondences glow.Colour shows that structure 30 is green color filter 32, electricity in each corresponding green sub-pixels unit B
The white light that the light emission side of electroluminescent display part 20 is sent is by the green color filter 32 in each green sub-pixels unit B
Afterwards, only green glow outgoing, the light of other wavelength is stopped by green color filter 32 and is unable to outgoing, so as to realize that each green is sub-
Pixel cell B correspondence green lights.It is wire grating polarization that colour, which shows structure 30 in correspondence each blue subpixels unit C,
Layer 33, the white light that the light emission side of electro-luminescence display device 20 is sent is after wire grating polarization layer 33 so that only with indigo plant
The light of light corresponding wavelength can outgoing, the light of other wavelength is reflected by wire grating polarization layer 33 and is unable to outgoing, so as to realize
Each blue subpixels unit C correspondence blue light-emittings.It is Red lightscreening plate 31 in correspondence each red sub-pixel unit A, right
Answer the metal in the green color filter 32 and each blue subpixels unit of correspondence C in each green sub-pixels unit B
Wire grid polarization layer 33 has collectively constituted colored display structure 30.
3rd, cycle and the setting of line width by wire grating on wire grating polarization layer 33 so that only have and blue light
The light of corresponding wavelength can outgoing, and white light by the blue light efficiency of outgoing after metallic wire grid polarizer 33 as shown in Fig. 2 peak value
Transmitance can reach 75% (corresponding wavelength is blue light in 450nm or so light), can pass through blue filter higher than white light
The blue light efficiency (blue light transmitance is generally 55%) of outgoing after piece, therefore, it is possible to improve each corresponding blue subpixels unit
The light extraction efficiency of blue light in C.
The embodiment of the present invention provides a kind of display panel, including underlay substrate and multiple electricity positioned at underlay substrate side
Electroluminescent display part, electro-luminescence display device is used to emit white light, in addition to is arranged at electro-luminescence display device light emission side
It is colored show structure, colour show the Red lightscreening plate that structure includes being correspondingly arranged in each red sub-pixel unit,
The green color filter that is correspondingly arranged in each green sub-pixels unit and it is correspondingly arranged at each blue subpixels list
Wire grating polarization layer in member, for passing through the blue light of correspondence blue subpixels unit.Electro-luminescence display device goes out
In the white light that light side is sent, include red, green and blue light, it is red by being correspondingly arranged at each in colour display structure
Red lightscreening plate in color sub-pixel unit causes with the green color filter being correspondingly arranged in each green sub-pixels unit
Red sub-pixel unit realizes that red light is shown, green sub-pixels unit realizes that green light is shown, meanwhile, colour is shown in structure
Wire grating polarization layer is provided with each blue subpixels unit of correspondence, for making blue subpixels unit realize blue light
It has been shown that, so as to realize the colored display of display panel.Because the blue light transmitance of wire grating polarization layer is higher than blue color filter
Blue light transmitance, so as to effectively raise the light extraction efficiency of blue light in display panel.
Further, as shown in figure 3, the display panel of the embodiment of the present invention also includes quarter wave plate 40 and polarizer 50,1/
4 wave plates 40 are arranged on wire grating polarization layer 33 close to the side of electro-luminescence display device 20, and polarizer 50 is arranged on colour
Show that structure 30 deviates from the side of electro-luminescence display device 20.Wherein, the quick shaft direction of quarter wave plate 40 is polarized with wire grating
Angle is 45 ° between the wire grating bearing of trend of layer 33, transmission direction of principal axis and the wire grating polarization layer 33 of polarizer 50
Wire grating bearing of trend is identical.
It should be noted that as shown in figure 3, also include quarter wave plate 40 and polarizer 50 on a display panel, such one
Come, when display panel is in the higher environment of ambient light intensity, can effectively reduce the incident display panel of ambient and by
Influence after display panel internal reflection after incident human eye to human eye observation's display panel display picture, improves the aobvious of display panel
Show effect.As shown by the arrows in Figure 3, beyond display panel the incident display panel of ambient, is first subjected to polarizer 50
Stop, the transmission direction of principal axis identical light of only direction of vibration and polarizer 50 can be incident to aobvious through polarizer 50
Show panel itself, there is the light that a part is incident to inside display panel the transmission direction of principal axis identical with polarizer 50 to polarize
Direction, as linearly polarized light, incident linearly polarized light further by quarter wave plate 40 after, the phase provided due to quarter wave plate 40
The effect of delay difference, to adding a phase-delay difference between two vertical components of incident linearly polarized light, so as to change
The metal wire of the quick shaft direction of quarter wave plate 40 and wire grating polarization layer 33 in the polarization state of light, the embodiment of the present invention
Angle is 45 ° between grid bearing of trend, and therefore, it is possible to which linearly polarized light is changed into circularly polarized light, circularly polarized light is shown by OLED
Quarter wave plate 40 is again passed by after metal material layer reflection in panel ray structure, by the phase-delay difference of quarter wave plate 40
Effect so that circularly polarized light is again transformed into linearly polarized light, but is due to twice by quarter wave plate 40 so that light vibration plane
Orientation there occurs 90 ° of change, thus the direction of vibration of the linearly polarized light of outgoing with twice pass through quarter wave plate 40 before line it is inclined
The direction of vibration of light of shaking differs 90 °, so, the direction of vibration of the linearly polarized light of outgoing and the transmission direction of principal axis of polarizer 50 hang down
Directly, it is impossible to by the outgoing of polarizer 50, therefore, set after quarter wave plate 40 and polarizer 50, can avoid outer on a display panel
Boundary's ambient light incidence and reflection and the display picture to human eye observation's display panel causes bad influence.
But be due to be provided with quarter wave plate 40 and polarizer 50, for correspondence red sub-pixel unit A on display panel,
Green sub-pixels unit B and the corresponding red, green of blue subpixels unit C outgoing, blue ray, also due to part
The direction of vibration of light is different from the transmission direction of principal axis of polarizer 50 and is unable to outgoing, so that reduce display panel goes out light efficiency
Rate.For blue light, in the white light that electroluminance display structure 20 is sent, the luminous efficiency of blue light is inherently relative
It is relatively low, and the brightness of blue light is also very fast with the decay of time, therefore, can be reduced with greater need for the light extraction efficiency for improving blue light
The overall power of display panel.
In the display panel of the embodiment of the present invention, colored corresponding to blue subpixels unit C shows that structure 30 is metal
Wire grid polarization layer 33, the bearing of trend of the wire grating of wire grating polarization layer 33 is identical with the transmission direction of principal axis of polarizer 50,
While wire grating polarization layer 33 carries out selective pass through to blue light, direction of vibration and wire grating polarization layer 33 in blue light
The bearing of trend identical part linearly polarized light of wire grating pass through the outgoing of wire grating polarization layer 33, direction of vibration in blue light
The part linearly polarized light vertical with the bearing of trend of the wire grating of wire grating polarization layer 33 passes through wire grating polarization layer 33
Reflection, the effect of the phase-delay difference provided by quarter wave plate 40 is vertical to two of some blue light linearly polarized light of reflection
A phase-delay difference is added between component, so that linearly polarized light is changed into circularly polarized light, circularly polarized light is aobvious by OLED
Show the effect for the phase-delay difference that quarter wave plate 40 is again passed by after the reflection of the metal material layer in panel ray structure so that circle
Polarised light is again transformed into linearly polarized light, causes the orientation of light vibration plane to there occurs 90 ° of change by quarter wave plate 40 twice
Change, so that the direction of vibration of the blue light linearly polarized light of outgoing and shaking by the blue light linearly polarized light before quarter wave plate 40 twice
Dynamic direction differs 90 °, therefore, originally can not twice be passed through by some blue light linearly polarized light of the outgoing of wire grating polarization layer 33
After quarter wave plate 40, direction of vibration changes 90 °, so as to pass through the outgoing of wire grating polarization layer 33.Due to wire grating polarization
The bearing of trend of the wire grating of layer 33 is identical with the transmission direction of principal axis of polarizer 50, and this part is twice after quarter wave plate 40
The blue light linearly polarized light that direction of vibration changes 90 ° also can be by the outgoing of polarizer 50, so as to be polarized by the wire grating of setting
Layer 33, the light extraction efficiency of blue light is doubled.
It is preferred that, as shown in figure 4, colored show that Red lightscreening plate 31 and green color filter 32 are arranged at 1/4 in structure 30
Wave plate 40 is close to the side of electroluminance display structure 20.
So, as shown in figure 4, for correspondence red sub-pixel unit A and green sub-pixels unit B in display panel
Part, Red lightscreening plate 31 and green color filter 32 can be set as close to the light emission side of electroluminance display structure 20
Put, corresponding light efficiency is gone out by the feux rouges of Red lightscreening plate 31 and the corresponding green glow by green color filter 32 so as to improve
Rate.
It is preferred that, polarizer 50 is absorptive polarizers.
Polarizer 50 has generally included reflective polarizer, absorptive polarizers etc. according to it to the mode of action of light.
In the display panel of the embodiment of the present invention, polarizer 50 selects absorptive polarizers.Absorptive polarizers can be by the light passed through
In line, direction of vibration is passed through with it through direction of principal axis identical light, and direction of vibration is inhaled from it through the different light of direction of principal axis
Receive, so as to avoid impervious some light, in display panel internal reflection, the display to display panel causes unfavorable shadow
Ring.
Wherein, the embodiment of the present invention is not limited for the concrete structure of polarizer 50, as long as can realize to polarised light
Middle direction of vibration is passed through with it through direction of principal axis identical partial poolarized light, for example, polarizer 50 can be polarizer.
Further, the material of wire grating polarization layer 33 includes one kind in aluminium, gold or chromium.
Wire grating polarization layer 33 can be more preferred from making material of the metal as wire grating, aluminium,
Any one in gold or chromium is used as the material for making wire grating polarization layer 33, it is possible to increase wire grating polarization layer 33
Using effect, and improve the job stability and service life of wire grating polarization layer 33.Wherein, aluminium is used as making metal
The material of wire grid polarization layer 33 is wherein most preferably scheme.
It is preferred that, as shown in figure 5, the line width W of the wire grating of wire grating polarization layer 33 between 110nm-150nm,
Cycle T is between 230nm-270nm.
So, as shown in figure 5, the line width W of the wire grating of wire grating polarization layer 33 is arranged on into 110nm-
Between 150nm, it is preferred that line width W is set into 130nm, and the cycle T of the wire grating of wire grating polarization layer 33 is set
Between 230nm-270nm, it is preferred that cycle T is set into 250nm, it is possible to increase wire grating polarization layer is passed through in white light
The transmitance of 33 blue light, so as to reduce the power consumption of display panel.
It is preferred that, as shown in figure 5, the height H of the wire grating of wire grating polarization layer 33 is between 250nm-290nm.
As shown in figure 5, the height H of the wire grating of wire grating polarization layer 33 is arranged between 250nm-290nm, can
Further improve the transmitance of the blue light in white light through wire grating polarization layer 33, it is preferred that wire grating polarization layer 33
It is preferred that the height H of wire grating is set to 270nm.
There is provided the display panel of a kind of display device, including any of the above-described for the another aspect of the embodiment of the present invention.
When carrying out colour picture display using the display device of the embodiment of the present invention, due to passing through wire grating polarization layer 33
The blue color filter used in the prior art be instead of as correspondence blue subpixels unit C colour and show structure 30, it is electroluminescent
The white light that light-emitting display device 20 is sent has been obtained effectively by the blue light light extraction efficiency of the outgoing blue light of wire grating polarization layer 33
Raising.Because the decay that the luminous efficiency of blue light is low and blue light is changed over time is fast in original display device so that aobvious
It must increase the power consumption of whole display device to ensure the light extraction efficiency of blue light in showing device, pass through in the embodiment of the present invention
Set wire grating polarization layer 33 to replace blue color filter, the light extraction efficiency of blue light is improved, so that display device can
Corresponding reduction power consumption.
Above-mentioned in the structure of display panel and the detailed description of luminescence display, for including display panel
Display device carried out specific description, no longer repeated herein.
The another further aspect of the embodiment of the present invention there is provided a kind of manufacture method of display panel, as shown in fig. 6, including,
S101, multiple electro-luminescence display devices 20 are formed in the side of underlay substrate 10, electro-luminescence display device 20 is in energization shape
Emitted white light under state.S102, electro-luminescence display device 20 light emission side formed it is colored show structure 30, colour shows structure 30
Including be correspondingly arranged in each red sub-pixel unit A Red lightscreening plate 31, be correspondingly arranged at each sub- picture of green
Green color filter 32 in plain unit B and the wire grating polarization layer being correspondingly arranged in each blue subpixels unit C
33, wire grating polarization layer 33 is used to pass through correspondence blue subpixels unit C blue light.
Multiple electro-luminescence display devices 20 are formed in the side of underlay substrate 10 first, electro-luminescence display device 20 exists
Emitted white light under "on" position, to be formed as the OLED emitted white light.Coloured silk is formed in the light emission side of electro-luminescence display device 20
Color shows structure 30, and colour shows that structure 30 includes the Red lightscreening plate being correspondingly arranged in each red sub-pixel unit A
31st, the white light that the light emission side of electro-luminescence display device 20 is sent is by the red filter in each red sub-pixel unit A
After piece 31, only feux rouges outgoing, the light of other wavelength stops filtering by Red lightscreening plate 31.Likewise, colored show structure 30
Also include being correspondingly arranged at green color filter 32 in each green sub-pixels unit B, electro-luminescence display device 20 goes out
The white light that light side is sent is after the green color filter 32 in each green sub-pixels unit B, only green glow outgoing, other ripples
Long light stops filtering by green color filter 32, and colour shows that structure 30 also includes being correspondingly arranged at each blue subpixels list
Wire grating polarization layer 33 in first C, the white light that the light emission side of electro-luminescence display device 20 is sent is polarized by wire grating
After layer 33 so that only with the light of blue light corresponding wavelength can outgoing, the light of other wavelength reflected by wire grating polarization layer 33
And outgoing is unable to, so as to realize each blue subpixels unit C correspondence blue light-emittings.So, it becomes possible to so that display surface
Plate can realize colored display.
Further, when display panel also includes quarter wave plate 40 and polarizer 50, as shown in fig. 7, manufacture method is also wrapped
Include：S201, in wire grating polarization layer 33 close to the side of electro-luminescence display device 20 quarter wave plate 40 is set, it is aobvious in colour
Show that structure 30 sets polarizer 50 away from the side of electro-luminescence display device 20.Wherein, the quick shaft direction of quarter wave plate 40 and gold
Angle is 45 ° between belonging to the wire grating bearing of trend of wire grid polarization layer 33, the transmission direction of principal axis and wire grating of polarizer 50
The wire grating bearing of trend of polarization layer 33 is identical.
In order to reduce the incident display panel of ambient and people be observed after incident human eye after display panel internal reflection
The influence of display panel display picture is surveyed, the display effect of display panel is improved, 1/4 is additionally provided with OLED display panel
There was only the transmission direction of principal axis identical of direction of vibration and polarizer 50 in wave plate 40 and polarizer 50, the ambient light to cause the external world
Part linearly polarized light can be incident in display panel, incident light after quarter wave plate 40 is changed into circularly polarized light, even if
By the metal material layer reflection in OLED display panel ray structure, again pass by quarter wave plate 40 and be changed into linearly polarized light
Light, its direction of vibration changes 90 °, so that can not be by the outgoing of polarizer 50 to human eye.But it is due to be provided with polarizer 50,
In the light that the electro-luminescence display device 20 of display panel is sent, direction of vibration is differed with the transmission direction of principal axis of polarizer 50
90 ° of some light is also absorbed by polarizer 50 and is unable to outgoing.
Quarter wave plate 40 is arranged on wire grating polarization layer 33 close to the side of electro-luminescence display device 20, and will be inclined
The device 50 that shakes is arranged on the side that colored display structure 30 deviates from electro-luminescence display device 20, wherein, the fast axle side of quarter wave plate 40
It is 45 ° to angle between the wire grating bearing of trend of wire grating polarization layer 33, transmission direction of principal axis and the gold of polarizer 50
The wire grating bearing of trend for belonging to wire grid polarization layer 33 is identical, so, is ensureing the premise of the stop of ambient light to external world
Under, in blue light the direction of vibration part linearly polarized light vertical with the bearing of trend of the wire grating of wire grating polarization layer 33 due to
The outgoing of wire grating polarization layer 33 can not be passed through, is changed into after the reflection of wire grating polarization layer 33 by quarter wave plate
Circularly polarized light, circularly polarized light again passes by quarter wave plate after the metal material layer reflection in OLED display panel ray structure
40 are changed into linearly polarized light, cause the orientation of light vibration plane to there occurs 90 ° of change by quarter wave plate 40 twice, therefore, former
First can not direction of vibration turns after quarter wave plate 40 twice by some blue light linearly polarized light of the outgoing of wire grating polarization layer 33
Become 90 °, and the outgoing of wire grating polarization layer 33 can be passed through.So, just blue light is improved in wire grating polarization layer 33 to go out
On the basis of light efficiency, and the light extraction efficiency of blue light is doubled.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of display panel, including underlay substrate and multiple electroluminescent displays positioned at the underlay substrate side
Part, the electro-luminescence display device is used to emit white light, it is characterised in that also include：
It is arranged at the colored of the electro-luminescence display device light emission side and shows structure, the colored display structure includes correspondence and set
Put the Red lightscreening plate in each red sub-pixel unit, the green being correspondingly arranged in each green sub-pixels unit
Optical filter and the wire grating polarization layer being correspondingly arranged in each blue subpixels unit, for making the correspondence blueness
The blue light of sub-pixel unit is passed through.
2. display panel according to claim 1, it is characterised in that also including quarter wave plate and polarizer, 1/4 ripple
Piece is arranged on the wire grating polarization layer close to the side of the electro-luminescence display device, and the polarizer is arranged on described
Colour shows that structure deviates from the side of the electro-luminescence display device；
Wherein, angle between the wire grating bearing of trend of the quick shaft direction of the quarter wave plate and the wire grating polarization layer
For 45 °, the transmission direction of principal axis of the polarizer is identical with the wire grating bearing of trend of the wire grating polarization layer.
3. display panel according to claim 1, it is characterised in that described colored to show in structure Red lightscreening plate and green
Colo(u)r filter is arranged at the quarter wave plate close to the side of the electroluminance display structure.
4. display panel according to claim 3, it is characterised in that the polarizer is absorptive polarizers.
5. display panel according to claim 1, it is characterised in that the material of the wire grating polarization layer include aluminium,
One kind in gold or chromium.
6. display panel according to claim 1, it is characterised in that the line of the wire grating of the wire grating polarization layer
Width is between 110nm-150nm, the cycle is between 230nm-270nm.
7. display panel according to claim 1, it is characterised in that the height of the wire grating of the wire grating polarization layer
Degree is between 250nm-290nm.
8. a kind of display device, it is characterised in that including the display panel described in claim any one of 1-7.
9. a kind of manufacture method of display panel, it is characterised in that including：
Multiple electro-luminescence display devices are formed in the side of underlay substrate, the electro-luminescence display device is in the energized state
Emit white light；
Colored display structure is formed in the light emission side of the electro-luminescence display device, the colored display structure includes correspondence and set
Put the Red lightscreening plate in each red sub-pixel unit, the green being correspondingly arranged in each green sub-pixels unit
Optical filter and the wire grating polarization layer being correspondingly arranged in each blue subpixels unit, the wire grating polarization layer
For passing through the blue light of the correspondence blue subpixels unit.
10. manufacture method according to claim 9, it is characterised in that display panel also includes quarter wave plate and polarizer
When, the manufacture method also includes：
Quarter wave plate is set close to the side of the electro-luminescence display device in the wire grating polarization layer, in the colour
Show that structure sets polarizer away from the side of the electro-luminescence display device；Wherein, the quick shaft direction of the quarter wave plate with
Angle is 45 ° between the wire grating bearing of trend of the wire grating polarization layer, the transmission direction of principal axis of the polarizer and institute
The wire grating bearing of trend for stating wire grating polarization layer is identical.
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| CN107154420B (en) | 2020-06-02 |
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