CN108987451A - Display panel and its control method and display device - Google Patents
Display panel and its control method and display device Download PDFInfo
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- CN108987451A CN108987451A CN201810861837.3A CN201810861837A CN108987451A CN 108987451 A CN108987451 A CN 108987451A CN 201810861837 A CN201810861837 A CN 201810861837A CN 108987451 A CN108987451 A CN 108987451A
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
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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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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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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Abstract
The present invention provides display panel and its control methods and display device.The display panel includes: substrate, is provided with multiple pixel regions on a surface of substrate；Multiple OLED device, multiple OLED device are arranged in a one-to-one correspondence in the effective light transmission area of pixel region；The side of OLED device light direction is arranged in color film layer, color film layer, and color film layer includes multiple colored filters, and the orthographic projection of each colored filter on substrate covers the orthographic projection of an effective light transmission area on substrate；Multiple electrochromic layers, the side of the separate and/or close OLED device of color film layer is arranged in multiple electrochromic layers, and the orthographic projection of each electrochromic layer on substrate covers in a pixel region and is not hacked the orthographic projection of the region of Matrix cover on substrate.The reflectivity of the display panel ambient light is lower as a result, and picture contrast is higher.
Description
Technical field
The present invention relates to field of display technology, specifically, being related to display panel and its control method and display device.
Background technique
With the rapid development of LCD technology, the exploitation of OLED (Organic Light Emitting Diode) product is maked rapid progress, and is made
COE (CF on EL makes color film on organic luminous layer) technology of one of scheme for OLED display panel is increasingly taken seriously,
COE technology refer in the thinner package film layer or flatness layer of OLED device light direction directly formed include black matrix (BM) and with
The colored filter (CF) of its same layer setting is exactly directly in the OLED by encapsulation such as the display panel of top emitting
By being lithographically formed colored filter on device.Above-mentioned technical proposal eliminates the rotatory polarization piece of existing OLED device, when being used for
When flexible display, the bending flexible characteristic of OLED device can be well realized, simultaneously as BM and CF coloured silk film is to environment light
Absorption, can cancel and be used to eliminate the rotatory polarization piece of environment light in script OLED display panel, guarantee environment light
Under reflectivity levels unanimous circumstances promoted OLED device go out light utilization efficiency, make its go out light utilization efficiency by 42% promoted to
57%.But it in order to pursue more preferable display effect, still needs to further eliminate environment light, drops the reflectivity of low ambient light, mention
Rise OLED device goes out light utilization efficiency.
Research accordingly, with respect to display panel needs to be goed deep into.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose that one kind is low with reflection of ambient light, it is high, low in energy consumption to go out light utilization efficiency height, aperture opening ratio, shows picture
The display panel of the advantages that good or long service life.
In one aspect of the invention, the present invention provides a kind of display panels.According to an embodiment of the invention, described aobvious
Show that panel includes: substrate, is provided with multiple pixel regions on a surface of the substrate；Multiple OLED device, it is multiple described
OLED device is arranged in a one-to-one correspondence in the effective light transmission area of the pixel region；Color film layer, the coloured silk film layer are arranged described
The side of OLED device light direction, the coloured silk film layer includes multiple colored filters, and each colored filter is described
Orthographic projection on substrate covers the orthographic projection of an effective light transmission area over the substrate；Multiple electrochromic layers, it is multiple
The side of the separate and/or close OLED device of color film layer is arranged in the electrochromic layer, and each described electroluminescent
The orthographic projection of photochromic layer over the substrate, which covers in a pixel region, is not hacked the region of Matrix cover in the lining
Orthographic projection on bottom.It is directed to each pixel region as a result, when OLED device is in luminance in pixel region, control electricity
Mutagens chromatograph is colorless and transparent state, so that the light emission that OLED device issues goes out, shows picture；When the OLED device in pixel region
When part is in non-luminescent state, control electrochromic layer is in black, the effect of black matrix can be served as, for absorbing the pixel region
Environment light in Yu Zhong effective light transmission area, and then the reflectivity of low ambient light drops, improve picture contrast.
According to an embodiment of the invention, the black matrix and the color film layer same layer setting, the black matrix limits more
A opening, multiple colored filters are correspondingly arranged in multiple openings, and each electrochromic layer is in the lining
Orthographic projection on bottom is Chong Die with the orthographic projection of an opening over the substrate.
According to an embodiment of the invention, the not set black matrix of display panel, and each electrochromic layer
Orthographic projection over the substrate covers the orthographic projection of a pixel region over the substrate.
According to an embodiment of the invention, each electrochromic layer includes: the first sub- electrochromic layer, first son
The orthographic projection of electrochromic layer over the substrate is Chong Die with the orthographic projection of the effective light transmission area over the substrate；Second son
Electrochromic layer, the orthographic projection of the second sub- electrochromic layer over the substrate are non-transparent with pixel region
The orthographic projection overlapping of area over the substrate.
According to an embodiment of the invention, the OLED device is top emission OLED device, the display panel is further wrapped
Include: the first packaging film, first packaging film are arranged on surface of the OLED device far from the substrate, the coloured silk
Film layer is arranged on the surface of first packaging film far from the substrate；First flatness layer, the first flatness layer setting
On the surface of the color film layer far from the substrate, the electrochromic layer is arranged in first flatness layer far from the lining
On the surface at bottom；Second flatness layer, second flatness layer are arranged on the surface of first flatness layer far from the substrate,
And cover the electrochromic layer.
According to an embodiment of the invention, the OLED device is bottom emitting OLED device, the electrochromic layer setting exists
On the first surface of the substrate, the display panel further comprises: third flatness layer, and the third flatness layer is arranged in institute
It states on first surface, and covers the electrochromic layer；Thin film transistor (TFT) array, the thin film transistor (TFT) array are arranged described
On surface of the third flatness layer far from the substrate；4th flatness layer, the 4th flatness layer are arranged in the third flatness layer
On surface far from the substrate, and the thin film transistor (TFT) array is covered, the coloured silk film layer is arranged in the 4th flatness layer
On surface far from the substrate；The color film layer is arranged in far from the substrate in 5th flatness layer, the 5th flatness layer
On surface；Pixel defining layer, the pixel defining layer is arranged on surface of the 5th flatness layer far from the substrate, and limits
Multiple pixel openings are made, the OLED device is arranged in the pixel openings；Second packaging film, second thinner package
Film is arranged on surface of the pixel defining layer far from the substrate, and covers the OLED device.
According to an embodiment of the invention, the electrochromic layer includes: first electrode；Second electrode；And electrochromism
Material, the electrochromic material are arranged between the first electrode and the second electrode.
In another aspect of this invention, the present invention provides a kind of methods for controlling mentioned-above display panel.According to
The embodiment of the present invention, which comprises for the OLED device and electrochromic layer in each pixel region, when described
When OLED device is in luminance, controlling the electrochromic layer is colorless and transparent state；When the OLED device is in non-
When luminance, the electrochromic layer is controlled in black.Thus, it is possible to according to the OLED device in each pixel region whether
It is lit, flexibly controls electrochromic state, when electrochromic layer is in colorless and transparent state, the light that OLED device issues can
To be smoothly emitted, display picture can serve as the effect of black matrix, for absorbing pixel region when electrochromic layer is in black
Environment light in Yu Zhong effective light transmission area, and then the reflectivity of low ambient light drops, improve picture contrast.
According to an embodiment of the invention, each electrochromic layer includes: the first sub- electrochromic layer, first son
The orthographic projection of electrochromic layer over the substrate is Chong Die with the orthographic projection of the effective light transmission area over the substrate；Second son
Electrochromic layer, the orthographic projection of the second sub- electrochromic layer over the substrate are non-transparent with pixel region
The orthographic projection overlapping of area over the substrate；The described method includes: for the OLED device in each pixel region
With the electrochromic layer, when the OLED device and the OLED device adjacent with the described second sub- electrochromic layer are whole
When for luminance, the first sub- electrochromic layer and the colorless and transparent state of the second sub- electrochromic layer are controlled；
When the OLED device be luminance, and the OLED device adjacent with the described second sub- electrochromic layer be non-luminescent shape
When state, the first sub- colorless and transparent state of electrochromic layer is controlled, and the second sub- electrochromic layer is in black；Work as institute
Stating OLED device is non-luminescent state, and the OLED device adjacent with the described second sub- electrochromic layer is luminance
When, it controls the first sub- electrochromic layer and the second sub- electrochromic layer is in black；When the OLED device and with
When all non-luminescent state of the adjacent OLED device of the second sub- electrochromic layer, the electroluminescent change of first son is controlled
Chromatograph and the second sub- electrochromic layer are in black.
In still another aspect of the invention, the present invention provides a kind of display devices.According to an embodiment of the invention, described aobvious
Showing device includes mentioned-above display panel.The picture contrast of the display device is good as a result, low in energy consumption, long service life.
Certainly, it will be understood by those skilled in the art that the display device has all feature and advantage of mentioned-above display panel,
It no longer excessively repeats herein.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of display panel in one embodiment of the invention.
Fig. 2 is the structural schematic diagram of display panel in another embodiment of the present invention.
Fig. 3 is the structural schematic diagram of electrochromic layer in another embodiment of the invention.
Fig. 4 is the partial top view of display panel in another embodiment of the invention.
Fig. 5 is the structural schematic diagram of display panel in another embodiment of the invention.
Fig. 6 is the structural schematic diagram of display panel in another embodiment of the invention.
Fig. 7 is the structural schematic diagram of display panel in another embodiment of the invention.
Fig. 8 is the structural schematic diagram of display panel in another embodiment of the invention.
Fig. 9 is the structural schematic diagram of display panel in another embodiment of the invention.
Figure 10 is the structural schematic diagram of display panel in another embodiment of the invention.
Figure 11 is the structural schematic diagram of display panel in another embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail.The embodiments described below is exemplary, and is only used for explaining this hair
It is bright, and be not considered as limiting the invention.Particular technique or condition are not specified in embodiment, according to text in the art
It offers described technology or conditions or is carried out according to product description.Reagents or instruments used without specified manufacturer,
For can be with conventional products that are commercially available.
In one aspect of the invention, the present invention is supplied to a kind of display panel.According to an embodiment of the invention, reference
Fig. 1 and Fig. 2, the display panel include: substrate 10, are provided with multiple pixel regions on a surface of substrate 10；It is multiple
OLED device 20, multiple OLED device 20 are arranged in a one-to-one correspondence in the effective light transmission area of pixel region；Color film layer 30, color film layer
30 are arranged in the side of 20 light direction of OLED device, and color film layer 30 includes multiple colored filters 31, each colored filter
31 cover orthographic projection of the effective light transmission area on substrate 10 in the orthographic projection on substrate 10；Multiple electrochromic layers 40 are more
The side of the separate and/or close OLED device 20 of color film layer 30, and each electrochromic layer 40 is arranged in a electrochromic layer 40
Orthographic projection on substrate covers orthographic projection of the region not covered by black matrix 32 in a pixel region on substrate 10.By
This is correspondingly arranged an electrochromic layer for each pixel region, and it is (colorless and transparent or black individually to control its state
Color), when OLED device is in luminance (illuminated state) in pixel region, control electrochromic layer is colorless and transparent state, is made
It obtains the light emission that OLED device issues to go out, shows picture；When the OLED device in pixel region is in non-luminescent state (dark-state),
Controlling electrochromic layer is in black, the effect of black matrix can be served as, for absorbing in the pixel region in effective light transmission area
Environment light, and then the reflectivity of low ambient light drops, improve picture contrast.
It should be noted that effective light transmission area refers to the setting area of luminescent layer in OLED device, in a pixel region,
Removing the region except effective light transmission area is opaque area.
According to an embodiment of the invention, colored filter may include Red lightscreening plate, blue color filter and green filter
Piece also may include Red lightscreening plate, blue color filter, green color filter and yellow filter, and this is not restricted requires.
According to an embodiment of the invention, there is no limit requirement, those skilled in the art for the material and method that form black matrix
Can flexible choice according to actual needs, also require with no restriction herein.
According to an embodiment of the invention, referring to Fig. 3, electrochromic layer 40 wraps in order to realize the control to electrochromic layer
It includes: first electrode 401；Second electrode 403；And electrochromic material 402, electrochromic material 402 are arranged in first electrode
Between 401 and second electrode 403.Thus, it is possible to be realized by changing the voltage between first electrode and second electrode to electroluminescent
The control of photochromic layer achieves colorless and transparent state or black state.The specific material for forming electrochromic material does not limit
System requires, as long as can control its color state by controlling voltage (colorless and transparent or color is black).In implementation of the invention
In example, electrochromic material is selected from inorganic electrochromic material or organic electrochromic material, wherein inorganic electrochromic material
Including but not limited to tungstic acid；Organic electrochromic material include but is not limited to polythiophene class and its derivative, purple sieve essence class,
Tetrathiafulvalene, metallo phthalocyanine.According to an embodiment of the invention, those skilled in the art are flexible according to actual needs
The forming method of electrochromic layer in routine techniques is selected, in this application, line forms first electrode and second electrode, it
Electrochromic material is injected by the method to instil afterwards, forms electrochromic layer.
According to an embodiment of the invention, in order to enable the light light transmission electrochromic layer that OLED device issues, first electrode
It is transparent electrode with second electrode, in an embodiment of the present invention, the material for forming first electrode and second electrode includes but not
It is limited to tin indium oxide (ITO).
According to an embodiment of the invention, there is no limit requirement, those skilled in the art for the specific structure of above-mentioned OLED device
Can flexible choice conventional structure according to actual needs OLED device.In some embodiments of the invention, OLED device packet
The luminescent layer of anode and cathode (reflecting electrode) and setting between a cathode and an anode is included, or including anode, hole transport
Layer (HTL), luminescent layer (EL) and electron transfer layer (ETL), cathode, or including cathode, electron injecting layer, electron transfer layer,
The structures such as luminescent layer, hole transmission layer, hole injection layer and anode, wherein anode is transparent electrode, forms the material packet of anode
ITO is included but is not limited to, cathode is lighttight reflecting electrode, and the material for forming cathode includes but is not limited to metal or alloy.
According to an embodiment of the invention, there is no limit requirement, those skilled in the art for the concrete type of above-mentioned OLED device
It can flexible design according to actual needs.In some embodiments of the invention, which can be with top emission OLED device
(structural schematic diagram of display panel is referring to Fig.1), or (the structural schematic diagram reference of display panel of bottom emitting OLED device
Fig. 2), OLED device is discussed in detail below according to some embodiments is top emission OLED device or bottom emitting OLED device
When, the specific structure of display panel:
In some embodiments of the present invention, OLED device is top emission OLED device, and referring to Fig.1, display panel is further
It include: the first packaging film 50, in OLED device 20, (OLED device includes cathode 21, anode 22 to the setting of the first packaging film 50
With luminescent layer 23, and OLED device same layer is provided with pixel defining layer 80) far from substrate 10 (can be further on the surface of substrate
It is provided with thin film transistor (TFT) 13 and the insulating layer 14 in covering thin film transistor (TFT) 13, wherein the drain electrode of thin film transistor (TFT) and OLED
The cathode of device pass through via hole be electrically connected) surface on, the first table of the packaging film 50 far from substrate 10 is arranged in color film layer 30
On face；First flatness layer 60, the first flatness layer 60 be arranged on color surface of the film layer 30 far from substrate 10 (display panel have it is black
When matrix 32, the first flatness layer 60 is arranged on the surface of color film layer 30 and black matrix 32 far from substrate 10), electrochromic layer 40
It is arranged on the first surface of the flatness layer 60 far from substrate 10；Second flatness layer 70, the setting of the second flatness layer 70 are flat first
On 60 surface far from substrate 10 of layer, and cover electrochromic layer 40.
According to an embodiment of the invention, in order to improve the service performance of display panel, in substrate 10 and thin film transistor (TFT) 13
Between can further comprise light shield layer and buffer layer, wherein light shield layer is arranged on the surface of substrate 10, buffer layer setting is hiding
Photosphere is far from the surface of substrate.According to an embodiment of the invention, when the display panel is flexible display panels, then it can be in substrate
Flexible base board is further set between light shield layer.
In other embodiments of the invention, OLED device is bottom emitting OLED device, referring to Fig. 2, electrochromic layer 40
Be arranged on the first surface 15 of substrate 10, display panel further comprises: third flatness layer 90, the setting of third flatness layer 90 exist
On first surface 15, and cover electrochromic layer 40；13 array of thin film transistor (TFT), the setting of 13 array of thin film transistor (TFT) are flat in third
On smooth surface of the layer 90 far from substrate 10；4th flatness layer 100, the setting of the 4th flatness layer 100 is in third flatness layer 90 far from lining
On the surface at bottom, and 13 array of thin film transistor (TFT) is covered, the 4th surface of the flatness layer 100 far from substrate 10 is arranged in color film layer 30
On；5th flatness layer 110, the 5th flatness layer 110 be arranged on color surface of the film layer 30 far from substrate 10 (display panel have it is black
When matrix 32, the 5th flatness layer 110 is arranged on the surface of color film layer 30 and black matrix 32 far from substrate 10)；Pixel defining layer
80, pixel defining layer 80 is arranged on the 5th surface of the flatness layer 110 far from substrate 10, and limits multiple pixel openings,
OLED device 20 (OLED device includes cathode 21, anode 22 and luminescent layer 23, and Anodic 22 can be set to face electrode, if
It sets between the 5th flatness layer 110 and pixel defining layer 80, and passes through the drain electrode (not shown) of via hole and thin film transistor (TFT)
Electrical connection)-mono- be arranged in pixel openings；Second packaging film 120, the second packaging film 120 are arranged in pixel defining layer 80
On surface far from substrate 10, and cover OLED device 20.It further, can also be in side of the pixel defining layer far from substrate
The 6th flatness layer (not shown) is formed, in order to the preparation of subsequent structural.
It should be noted that the sectional view of Fig. 2 be not be approximately the same plane sectional view, but along Fig. 4 AA ' line one
A sectional view, Anodic are electrically connected by via hole 130 with the drain electrode (not shown) of thin film transistor (TFT).
According to an embodiment of the invention, in order to improve the service performance of display panel, it is brilliant in third flatness layer 130 and film
It can further comprise light shield layer and buffer layer between body pipe 13, wherein light shield layer is arranged on the surface of third flatness layer 130,
Light shield layer is arranged in far from the surface of substrate in buffer layer.According to an embodiment of the invention, when the display panel is Flexible Displays
Then flexible base board can be further arranged on the first surface 15 of substrate in panel.
According to an embodiment of the invention, formed the first packaging film, the second thinner package, the first flatness layer, the second flatness layer,
Third flatness layer, the 4th flatness layer, the 5th flatness layer, the 6th flatness layer, pixel defining layer, buffer layer, light shield layer and flexibility
There is no limit requirement, those skilled in the art select routine to use material and formation side for the isostructural specific material of substrate and method
Method, this is not restricted requires.According to an embodiment of the invention, in order on the basis of dropping the reflectivity of low ambient light,
Increase display panel aperture opening ratio, be lifted out light utilization efficiency, referring to figure 5 and figure 6 (illustrated only in figure a pixel region and with
Adjacent pixel regions a part), black matrix 32 and the setting of color 30 same layer of film layer, black matrix 32 limit multiple openings 321,
Multiple colored filters 31 be correspondingly arranged at it is multiple opening 321 in, orthographic projection of each electrochromic layer 40 on substrate 10 with
Orthographic projection overlapping of one opening 321 on substrate 10.As a result, when OLED device is in luminance, electrochromism is controlled
Layer 40 is colorless and transparent state, reduces the area of black matrix, the exit area for the light that OLED device issues increases, and then increases
The aperture opening ratio of display panel, is lifted out light utilization efficiency.
In the examples described above, referring to figure 5 and figure 6, the electrochromic layer 40 in each pixel region can be divided into two can be single
The sub- photochromic layer solely controlled, i.e., the first sub- photochromic layer 43 and the second sub- photochromic layer 44: in some instances, two sub- photochromic layers can
The side (referring to Fig. 5) in color film layer 30 (or colored filter 31) far from OLED device 20 as a whole, is arranged, such as
This, the electrochromic layer same layer setting in each pixel, convenient for preparation；In other examples, the first sub- photochromic layer 43 is in coloured silk
Film layer 30 (or colored filter 31) far from OLED device 20 side, and the orthographic projection of the first sub- photochromic layer 43 on substrate with
The orthographic projection overlapping of effective light transmission area on substrate, the second sub- setting of photochromic layer 44 are leaned in color film layer 30 (or colored filter 31)
The side of nearly OLED device 20, and be arranged with 32 same layer of black matrix (referring to Fig. 6), i.e., the second sub- photochromic layer 44 replaces quilt in Fig. 1
The black matrix that colored filter 31 covers.Thus, it is possible to meet different technique setting demands.
According to an embodiment of the invention, promoting light utilization efficiency, and drop low ambient light to further increase aperture opening ratio
Reflectivity, referring to Fig. 7, Fig. 8 and Fig. 9, the not set black matrix of display panel, and each electrochromic layer 40 on substrate 10 just
Orthographic projection of projection one pixel region 11 of covering on substrate 10.As a result, when the OLED device in all pixels region is located
When luminance, the colorless and transparent state of electrochromic layer, OLED device issue light can be emitted, will not be absorbed or
Stop, can greatly improve the aperture opening ratio of display panel, and due to the increase of aperture opening ratio, compared to being not provided with showing for electrochromic layer
There is technology, if driving identical display picture, the power consumption of the display panel consumption of the application is lower, and then reduces power consumption, extends
Service life；When the OLED device in all pixels region is in non-luminescent state, all electrochromic layers are in black, phase
When so more environment light absorptions can be fallen, reducing ring in being provided with one layer of environment light absorbing layer in entire pixel region
The reflectivity of border light.In addition, being opened compared to the prior art for being not provided with electrochromic layer if being calculated with pixel size corresponding region
Mouthful rate, and if the size of black matrix account for the 50% of pixel size corresponding region, can make OLED device go out light utilization efficiency and
Environment light absorbed power can promote one times.
In the examples described above, the electrochromic layer 40 in each pixel region can be divided into three separately controllable sub- discolorations
Layer, the i.e. sub- photochromic layer 45 of third, the 4th sub- photochromic layer 46 and the 5th sub- photochromic layer 47: in some instances, above three becomes
Chromatograph can be used as an entirety, and the side (reference in color film layer 30 (or colored filter 31) far from OLED device 20 is arranged
Fig. 7), in this way, three sub- photochromic layer same layer settings, are convenient for preparation；In other examples, the sub- photochromic layer 45 of third is arranged in coloured silk
Film layer 30 (or colored filter 31) far from OLED device 20 side, and the orthographic projection of the sub- photochromic layer 45 of third on substrate with
The orthographic projection overlapping of effective light transmission area on substrate, the 4th sub- setting of photochromic layer 46 are leaned in color film layer 30 (or colored filter 31)
The side of nearly OLED device 20, the 5th sub- photochromic layer 47 are arranged between two neighboring chromatic filter layer (referring to Fig. 8), i.e., and the 4th
Sub- photochromic layer 46 and the 5th sub- photochromic layer 47 replace the black matrix in Fig. 1, and the 4th son of setting becomes on the position of setting black matrix
Chromatograph 46 and the 5th sub- photochromic layer 47；In other example, (the sub- photochromic layer 45 of third is on substrate for the sub- photochromic layer of third 45
Orthographic projection is Chong Die with the orthographic projection of effective light transmission area on substrate) and the 5th sub- photochromic layer 47 (the 5th sub- photochromic layer 47 is in substrate
On projection it is Chong Die with the orthographic projection of the gap between two neighboring chromatic filter layer on substrate) be arranged color film layer 30 (or
Colored filter 31) side far from OLED device 20, the 4th sub- setting of photochromic layer 46 is in color film layer 30 close to OLED device 20
Side (referring to Fig. 9)；In other example, the sub- 45 (orthographic projection of the sub- photochromic layer 45 of third on substrate of photochromic layer of third
It is Chong Die with the orthographic projection of effective light transmission area on substrate) and the setting of the 4th sub- photochromic layer 46 in (or the colored filter of color film layer 30
31) close to the side of OLED device 20, the 5th sub- photochromic layer 47 is arranged between two neighboring chromatic filter layer (referring to Fig.1 0).
Thus, it is possible to meet different technique setting demands.
According to an embodiment of the invention, in order to reduce reflection of ambient light, raising is opened when display panel is not provided with black matrix
Mouthful rate, can control the electrochromic layer partition domain in each pixel, and referring to Fig.1 1, each electrochromic layer includes: first sub
Electrochromic layer 41 (the sub- photochromic layer 45 of third in as Fig. 7-Fig. 8), the positive throwing of the first sub- electrochromic layer 41 on substrate
Shadow is Chong Die with the orthographic projection of effective light transmission area on substrate；Second sub- electrochromic layer 42 (becomes including the 4th son in Fig. 7-Fig. 8
Chromatograph 46 and the 5th sub- photochromic layer 47), the orthographic projection of the second sub- electrochromic layer 42 on substrate is non-with pixel region
The orthographic projection overlapping of transparent area (in a pixel region, removing the region except effective light transmission area) on substrate.Thus, it is possible to
According to the state that whether OLED device shines in each pixel region, the first sub- electrochromic layer 41 and second is flexibly individually controlled
The state of sub- electrochromic layer 42, specific: referring to Fig.1 0, for the OLED device and electrochromism in each pixel region
Layer, when OLED device and adjacent with the second sub- electrochromic layer 42 20 all luminances of OLED device, control first
Sub- electrochromic layer 41 and the second sub- colorless and transparent state of electrochromic layer 42, in this way, can not only drop low ambient light
Reflectivity can also increase aperture opening ratio, and promote OLED device goes out light utilization efficiency, reduce power consumption；When OLED device 20 is luminous
State, and the OLED device adjacent with the second sub- electrochromic layer 42 be non-luminescent state when, control the first sub- electrochromic layer
41 colorless and transparent states, and the second sub- electrochromic layer 42 darkly dice can so prevent colour mixture caused by light leakage existing
As or contrast reduce the problem of；When OLED device is non-luminescent state, and the OLED device adjacent with the second sub- electrochromic layer
When part is luminance, controls the first sub- electrochromic layer and the second sub- electrochromic layer is in black；When 20 He of OLED device
When adjacent with the second sub- electrochromic layer 42 20 all non-luminescent states of OLED device, the first sub- electrochromic layer of control and
Second sub- electrochromic layer is in black, can so prevent the problem of mixed color phenomenon or contrast reduce caused by light leakage.
It should be noted that above-mentioned " OLED device adjacent with the second sub- electrochromic layer " refer to this second son it is electroluminescent
The OLED device being arranged in the adjacent another pixel region of photochromic layer.
According to an embodiment of the invention, Fig. 5-Figure 10 is the schematic diagram by taking top emitting as an example, those skilled in the art
It can be according to the specific knot of the display panel of the specific structure flexible design bottom emitting of mentioned-above different electrochromic layer
Structure, this is no longer going to repeat them.
In another aspect of this invention, the present invention provides a kind of methods for controlling mentioned-above display panel.According to
The embodiment of the present invention, referring to Figures 1 and 2, which comprises for the OLED device and electroluminescent change in each pixel region
Chromatograph, when OLED device is in luminance, control electrochromic layer is colorless and transparent state；When OLED device is in non-hair
When light state, control electrochromic layer is in black.Thus, it is possible to according to the OLED device in each pixel region whether by point
It is bright, electrochromic state is flexibly controlled, when electrochromic layer is in colorless and transparent state, the light that OLED device issues can be suitable
Benefit outgoing, display picture can serve as the effect of black matrix when electrochromic layer is in black, for absorbing the pixel region
Environment light in effective light transmission area, and then the reflectivity of low ambient light drops, improve picture contrast.
According to an embodiment of the invention, referring to Fig.1 1, each electrochromic layer 40 includes: the first sub- electrochromic layer 41,
The orthographic projection of first sub- electrochromic layer 41 on substrate is Chong Die with the orthographic projection of effective light transmission area on substrate；Second son is electroluminescent
Photochromic layer 42, the alternatively non-transparent district of the orthographic projection of the second sub- electrochromic layer 42 on substrate and a pixel region is on substrate
Orthographic projection overlapping；The method of control display panel noted earlier include: in each pixel region OLED device and
Electrochromic layer, when 20 all luminances of OLED device that OLED device is adjacent with the second sub- electrochromic layer 42, control
Make the first sub- electrochromic layer and the colorless and transparent state of the second sub- electrochromic layer；When OLED device 20 be luminance,
And the OLED device adjacent with the second sub- electrochromic layer 42 be non-luminescent state when, control control the first sub- electrochromic layer 41
Colorless and transparent state, and the second sub- electrochromic layer 42 is in black；When OLED device be non-luminescent state, and with second son electricity
When the adjacent OLED device of mutagens chromatograph is luminance, controls the first sub- electrochromic layer and the second sub- electrochromic layer is in
Black；When OLED device 20 and adjacent with the second sub- electrochromic layer 42 20 all non-luminescent states of OLED device, control
Making the first sub- electrochromic layer and the second sub- electrochromic layer is in black, so can not only substantially reduce environment light
Reflectivity, the aperture opening ratio for improving display panel, but also can prevent mixed color phenomenon or contrast caused by light leakage from reducing
Problem.
It should be noted that above-mentioned " OLED device adjacent with the second sub- electrochromic layer " refer to this second son it is electroluminescent
OLED device in the adjacent another pixel region of photochromic layer.Above-mentioned control method can control mentioned-above display panel,
Wherein, to OLED device, the isostructural requirement of electrochromic layer, colored filter with it is mentioned-above consistent, it is not another herein
One illustrates.
In still another aspect of the invention, the present invention provides a kind of display devices.According to an embodiment of the invention, described aobvious
Showing device includes mentioned-above display panel.The picture contrast of the display device is good as a result, low in energy consumption, long service life.
Certainly, it will be understood by those skilled in the art that the display device has all feature and advantage of mentioned-above display panel,
It no longer excessively repeats herein.
According to an embodiment of the invention, the specific type of the display panel is not particularly limited, it can be any for this field
Device having a display function, equipment, for example including but to be not limited to mobile phone, tablet computer, computer display, game mechanical, electrical
Depending on machine, display screen, wearable device and other living electric apparatus or household electrical appliance having a display function etc..
Certainly, it will be understood by those skilled in the art that in addition to mentioned-above display panel, display dress of the present invention
Setting to include necessary structure and component possessed by conventional display device, take the mobile phone as an example and be illustrated, in addition to having
Except display panel of the invention, can also have cover board, touch screen, shell, CPU, photograph mould group, fingerprint recognition mould group,
Structure possessed by sound processing system etc. conventional cell phone and component.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of display panel characterized by comprising
Substrate is provided with multiple pixel regions on one surface of the substrate；
Multiple OLED device, multiple OLED device are arranged in a one-to-one correspondence in the effective light transmission area of the pixel region；
The side of the OLED device light direction is arranged in color film layer, the coloured silk film layer, and the coloured silk film layer includes multiple colours
Optical filter, the orthographic projection of each colored filter over the substrate cover an effective light transmission area in the substrate
On orthographic projection；
Multiple electrochromic layers, multiple electrochromic layers settings are in the color film layer far from and/or close to the OLED device
The side of part, and the orthographic projection of each electrochromic layer over the substrate is covered and is not hacked in a pixel region
The orthographic projection of the region of Matrix cover over the substrate.
2. display panel according to claim 1, which is characterized in that the black matrix and the color film layer same layer setting,
The black matrix limits multiple openings, and multiple colored filters are correspondingly arranged in multiple openings, each described
The orthographic projection of electrochromic layer over the substrate is Chong Die with the orthographic projection of an opening over the substrate.
3. display panel according to claim 1, which is characterized in that the not set black matrix of display panel, and
The orthographic projection of each electrochromic layer over the substrate covers the positive throwing of a pixel region over the substrate
Shadow.
4. display panel according to claim 3, which is characterized in that each electrochromic layer includes:
First sub- electrochromic layer, the orthographic projection of the first sub- electrochromic layer over the substrate and the effective light transmission area
Orthographic projection overlapping over the substrate；
Second sub- electrochromic layer, the orthographic projection of the second sub- electrochromic layer over the substrate and a pixel region
The orthographic projection overlapping of the alternatively non-transparent district in domain over the substrate.
5. display panel described in any one of -4 according to claim 1, which is characterized in that the OLED device is top emitting
OLED device, the display panel further comprises:
First packaging film, first packaging film is arranged on surface of the OLED device far from the substrate, described
Color film layer is arranged on the surface of first packaging film far from the substrate；
First flatness layer, first flatness layer are arranged on the surface of the color film layer far from the substrate, the electroluminescent change
Chromatograph is arranged on the surface of first flatness layer far from the substrate；
Second flatness layer, second flatness layer is arranged on the surface of first flatness layer far from the substrate, and covers
The electrochromic layer.
6. display panel described in any one of -4 according to claim 1, which is characterized in that the OLED device is bottom emitting
OLED device, on the first surface of the substrate, the display panel further comprises for the electrochromic layer setting:
Third flatness layer, the third flatness layer setting on the first surface, and cover the electrochromic layer；
The surface of the third flatness layer far from the substrate is arranged in thin film transistor (TFT) array, the thin film transistor (TFT) array
On；
4th flatness layer, the 4th flatness layer is arranged on the surface of the third flatness layer far from the substrate, and covers
The thin film transistor (TFT) array, the coloured silk film layer are arranged on surface of the 4th flatness layer far from the substrate；
5th flatness layer, the 5th flatness layer are arranged on the surface of the color film layer far from the substrate；
Pixel defining layer, the pixel defining layer is arranged on surface of the 5th flatness layer far from the substrate, and limits
Multiple pixel openings out, the OLED device are arranged in the pixel openings；
Second packaging film, second packaging film are arranged on surface of the pixel defining layer far from the substrate, and
Cover the OLED device.
7. display panel according to claim 1, which is characterized in that the electrochromic layer includes:
First electrode；
Second electrode；And
Electrochromic material, the electrochromic material are arranged between the first electrode and the second electrode.
8. a kind of method for controlling the display panel of any of claims 1-7 characterized by comprising
For the OLED device and electrochromic layer in each pixel region, when the OLED device is in luminance, control
Making the electrochromic layer is colorless and transparent state；When the OLED device is in non-luminescent state, the electroluminescent change is controlled
Chromatograph is in black.
9. according to the method described in claim 8, it is characterized in that, each electrochromic layer includes:
First sub- electrochromic layer, the orthographic projection of the first sub- electrochromic layer over the substrate and the effective light transmission area
Orthographic projection overlapping over the substrate；
Second sub- electrochromic layer, the orthographic projection of the second sub- electrochromic layer over the substrate and a pixel region
The orthographic projection overlapping of the alternatively non-transparent district in domain over the substrate；
The described method includes:
For in each pixel region the OLED device and the electrochromic layer, when the OLED device and with institute
When stating all luminance of the adjacent OLED device of the second sub- electrochromic layer, the first sub- electrochromic layer is controlled
With the colorless and transparent state of the described second sub- electrochromic layer；When the OLED device is luminance, and with described second
When the adjacent OLED device of sub- electrochromic layer is non-luminescent state, the first sub- electrochromic layer is controlled in colourless
Bright state, and the second sub- electrochromic layer is in black；When the OLED device be non-luminescent state, and with it is described second son
When the adjacent OLED device of electrochromic layer is luminance, the first sub- electrochromic layer and second son are controlled
Electrochromic layer is in black；When the OLED device and the OLED device adjacent with the described second sub- electrochromic layer are complete
When portion is non-luminescent state, controls the first sub- electrochromic layer and the second sub- electrochromic layer is in black.
10. a kind of display device, which is characterized in that including display panel of any of claims 1-7.
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