CN107394050A - A kind of OLED display panel, display device and its control method - Google Patents
A kind of OLED display panel, display device and its control method Download PDFInfo
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- CN107394050A CN107394050A CN201710595110.0A CN201710595110A CN107394050A CN 107394050 A CN107394050 A CN 107394050A CN 201710595110 A CN201710595110 A CN 201710595110A CN 107394050 A CN107394050 A CN 107394050A
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H—ELECTRICITY
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Abstract
Embodiments of the invention provide a kind of OLED display panel, display device and its control method, are related to display technology field, can improve image display quality.The OLED display panel, including it is arranged at the OLED element of subpixel area and electroluminescent color-change layer on substrate；The OLED element includes luminous material layer, and the electroluminescent color-change layer is arranged at the exiting surface side of the close OLED display panel of the luminous material layer；Wherein, the electroluminescent color-change layer is used under the control of voltage, realizes by the change transparent to predetermined color difference GTG.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of OLED display panel, display device and its control method.
Background technology
Compared, organic electroluminescent LED with liquid crystal display (Liquid Crystal Display, abbreviation LCD)
(Organic Light-Emitting Diode, abbreviation OLED) display has thin, light, wide viewing angle, actively luminous, luminous face
Color continuously adjustabe, fast response time, energy consumption are small, driving voltage is low, luminous efficiency is high and can Flexible Displays the advantages that, by
The very big concern of industrial circle and scientific circles.
However, in actual use, the problems such as due to export license, it may appear that picture color and actually there is deviation,
Image display quality is caused to be deteriorated.
The content of the invention
Embodiments of the invention provide a kind of OLED display panel, display device and its control method, can improve picture and show
Show quality.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
First aspect, there is provided a kind of OLED display panel, including be arranged on substrate the OLED element of subpixel area and
Electroluminescent color-change layer；The OLED element includes luminous material layer, and the electroluminescent color-change layer is arranged at the luminous material
The exiting surface side of the close OLED display panel of the bed of material；Wherein, the electroluminescent color-change layer is used for the control in voltage
Under system, realize by the change transparent to predetermined color difference GTG.
Optionally, the electroluminescent color-change layer is located at red subpixel areas；The predetermined color is blueness.
Further, the material positioned at the electroluminescent color-change layer of the red subpixel areas includes Prussia
It is blue.
Optionally, the thickness of the electroluminescent color-change layer exists
Optionally, the OLED element also includes anode, the sky being arranged between the anode and the luminous material layer
Cave implanted layer and hole transmission layer, negative electrode, the electron injecting layer and electricity being arranged between the negative electrode and the luminous material layer
Sub- transport layer；Based on this, the electroluminescent color-change layer may be disposed between the luminous material layer and the hole injection layer；
And/or the electroluminescent color-change layer may be disposed between the luminous material layer and the electron injecting layer.
Optionally, the substrate is glass or plastics.
Second aspect, there is provided a kind of display device, including OLED display panel described in first aspect, be arranged at it is described
OLED display panel light emission side and optical sensor and IC positioned at viewing area close to non-display area edge；The optical sensor
For gathering the light sent when OLED display panel shows specific picture；The IC is used for what is gathered according to the optical sensor
Light, chromaticity coordinates is obtained, and control is applied to the voltage on electroluminescent color-change layer accordingly.
The third aspect, there is provided a kind of control method of display device, including：Optical sensor collection OLED display panel is shown
The light sent during specific picture；The light that IC gathers according to the optical sensor, chromaticity coordinates is obtained, and control is applied to accordingly
Voltage on electroluminescent color-change layer.
Optionally, it is located at red subpixel areas in the electroluminescent color-change layer, and predetermined color is the situation of blueness
Under, the control method specifically includes：Optical sensor collection OLED display panel shows the light sent during white picture；IC roots
The white light light gathered according to the optical sensor, obtains chromaticity coordinates, and by the chromaticity coordinates compared with the first reference color coordinates,
Judge the partially red degree of picture, the voltage being applied to control on the electroluminescent color-change layer, make the electroluminescent color-change
The blueness of certain GTG is presented in layer；Wherein, first reference color coordinates are that the OLED display panel shows that the white is drawn
Theoretical white light chromaticity coordinates corresponding to required voltage during face.
Optionally, it is located at red subpixel areas in the electroluminescent color-change layer, and predetermined color is the situation of blueness
Under, the control method specifically includes：Optical sensor collection OLED display panel shows the light sent during red picture；It is integrated
The feux rouges light that circuit (Integrated circuit, abbreviation IC) gathers according to the optical sensor, chromaticity coordinates is obtained, and will
The chromaticity coordinates judges the partially red degree of picture compared with the second reference color coordinates, and the electroluminescent is applied to control
Voltage on photochromic layer, make the electroluminescent color-change layer that the blueness of certain GTG be presented；Wherein, second reference color coordinates
Theoretical feux rouges chromaticity coordinates corresponding to required voltage when showing the red picture for the OLED display panel.
The embodiment of the present invention provides a kind of OLED display panel, display device and its control method, by luminescent material
The exiting surface side of the close OLED display panel of layer sets electroluminescent color-change layer, and is asked according to be improvedd picture color
Topic, the material of electroluminescent color-change layer is rationally set, under the control of voltage electroluminescent color-change layer can be made to send out GTG certain
The light of predetermined color, so as to realize the regulation for sending luminous material layer light, and then play a part of improving picture color, to carry
High image display quality.
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 required accompanying drawing used 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 schematic diagram one of OLED display panel provided by the invention；
Fig. 2 is a kind of schematic diagram two of OLED display panel provided by the invention；
Fig. 3 is a kind of schematic diagram three of OLED display panel provided by the invention；
Fig. 4 is a kind of schematic diagram four of OLED display panel provided by the invention；
Fig. 5 is a kind of schematic diagram five of OLED display panel provided by the invention；
Fig. 6 is a kind of schematic top plan view of display device provided by the invention.
Reference：
1-OLED display panels；2- viewing areas；3- non-display areas；10- substrates；20-OLED elements；201- anodes；202-
Negative electrode；203- luminous material layers；204- hole transmission layers；205- electron transfer layers；206- hole injection layers；207- electron injections
Layer；30- electroluminescent color-change layers；40- thinner package film layers；50- optical sensors.
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 describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of OLED display panel 1, as depicted in figs. 1 and 2, including is arranged on substrate 10 sub
The OLED element 20 and electroluminescent color-change layer 30 of pixel region；OLED element 20 includes luminous material layer 203, and electroluminescent becomes
Chromatograph 30 is arranged at the exiting surface side of the close OLED display panel 1 of luminous material layer 203；Wherein, electroluminescent color-change layer
30 are used under the control of voltage, realize by the change transparent to predetermined color difference GTG.
It should be noted that first, OLED element 20 also includes anode 201 and negative electrode 202, and luminous material layer 203 is set
Between anode 201 and negative electrode 202.By the circuit being connected with anode 201 and negative electrode 202, applied to anode 201 and negative electrode 202
Making alive, hole is injected using anode 201, negative electrode 202 injects electronics, and the electronics formed and hole are in luminous material layer 203
Meet and produce exciton, so as to which excitation light-emitting material layer 203 is luminous.
Further, as shown in Figure 3 and Figure 4, OLED element 20 also includes being arranged at anode 201 and luminous material layer 203
Between hole transmission layer 204, and the electron transfer layer 205 being arranged between negative electrode 202 and luminous material layer 203, in order to
The efficiency of electronics and hole injection luminous material layer can be improved, OLED element 20 can also include being arranged at anode 201 and sky
Hole injection layer 206 between cave transport layer 204, and the electron injection being arranged between negative electrode 202 and electron transfer layer 205
Layer 207.
Second, according to the difference of anode 201, the material of negative electrode 202, OLED element 20 can divide one side light emitting-type and double-side
Type.When the material of one of electrode in anode 201 and negative electrode 202 is opaque material, OLED element 20 lights for one side
Type；When the material of anode 201 and negative electrode 202 is transparent material, OLED element 20 is dual-side luminescent type.
With anode 201 close to substrate 10, exemplified by negative electrode 202 is set away from substrate 10, when the printing opacity of anode 201, negative electrode 202 is not
During printing opacity, the light that OLED element 20 is sent projects from the side of anode 201, and now OLED element 20 is bottom light emitting-type (such as Fig. 2 and figure
Shown in 4), light is emitted from the side of substrate 10.Based on this, electroluminescent color-change layer 30 is arranged at luminous material layer 203 close to substrate
10 side, or it is arranged at the opposite side of the relative OLED element 20 of substrate 10.
With anode 201 close to substrate 10, exemplified by negative electrode 202 is set away from substrate 10, when anode 201 is light tight, negative electrode 202
During printing opacity, the light that OLED element 20 is sent projects from the side of negative electrode 202, and now OLED element 20 is top light emitting-type (such as Fig. 1 and figure
Shown in 3), light is emitted from the side of remote substrate 10 of OLED element 20.Based on this, electroluminescent color-change layer 30 is arranged at luminous material
Side of the bed of material 203 away from substrate 10,
When OLED element 20 is dual-side luminescent type, the above-mentioned description to bottom light emitting-type and top light emitting-type is referred to, specifically
It will not be repeated here.
Wherein, to ensure the luminescent properties of OLED element 20, the material of anode 201 should select high work function material, negative electrode
202 material should choose low-work-function material.
3rd, in the embodiment of the present invention, the material of electroluminescent color-change layer 30 is not limited specifically, in each color
On the basis of OLED element 20 sends light in itself in pixel region, need to send the color of light according to each color sub-pixels region,
To determine that electroluminescent color-change layer 30 sends out the light of what color, that is, the predetermined color is determined, and set in corresponding subpixel area
Put the electroluminescent color-change layer 30 of respective material.
Wherein, the material of the electroluminescent color-change layer 30 in different colours sub-pixel can differ.Not to electroluminescent
When luminous coloration layer 30 applies voltage, electroluminescent color-change layer 30 should be transparent.
Based on this, when without by the color of electroluminescent color-change layer 30 adjust when going out light color of OLED element 20,
Only need not apply voltage to electroluminescent color-change layer 30, make its holding transparent.When needing by electroluminescent color-change layer 30
Color go out light color adjust OLED element 20, during so as to improve 1 picture quality of OLED display panel, can as needed to
Electroluminescent color-change layer 30 applies different voltage, to reach required effect.
4th, electroluminescent color-change layer 30 is not limited to be arranged on each subpixel area, can be only arranged at the first color
In pixel region, may also set up in the first color and the second color sub-pixels region, or the first color, the second color and
3rd color sub-pixels region is all set.Wherein, the first color, the second color and the 3rd color three primary colors each other.
5th, voltage can be provided to electroluminescent color-change layer 30 by setting extra electrode, specifically can be according to reality
Situation is designed, and is defined by the normal work for not influenceing OLED element 20.
The embodiment of the present invention provides a kind of OLED display panel 1, passes through the close OLED display surfaces in luminous material layer 203
The exiting surface side of plate 1 sets electroluminescent color-change layer 30, and according to be improvedd picture color problem, rationally sets electroluminescent
The material of luminous coloration layer 30, the predetermined color that electroluminescent color-change layer 30 sends out GTG certain can be made under the control of voltage
Light, so as to realize the regulation for sending luminous material layer 203 light, and then play a part of improving picture color, to improve picture
Display quality.
In view of light that in OLED display panel 1, the OLED element 20 positioned at red, green, blue sub-pixels region is sent
Frequency is different, i.e. the frequency highest of blue light, the frequency of feux rouges is minimum, and the frequency of green glow is placed in the middle so that the luminous energy of blue light-emitting
Highest, the luminous energy of feux rouges is minimum, and green glow is placed in the middle, and luminous energy is high, and its export license is larger, and luminous energy is low, its electricity
Pole loss is smaller, thus, with the lengthening of usage time, it will the picture for causing OLED display panel 1 to show is gradually partially red.
Based on this, optionally, electroluminescent color-change layer 30 is located at red subpixel areas, in the case, positioned at red
The electroluminescent color-change layer 30 of subpixel area can be achieved by the change transparent to the different GTGs of blueness under the control of voltage.
Wherein, can be according to the partially red degree of picture, to control the voltage being applied on electroluminescent color-change layer 30, so that electric
The GTG for the blue light that photoluminescence photochromic layer 30 is sent will not introduce other display problems.
So, by setting electroluminescent color-change layer 30 in red subpixel areas, can make electroluminescent under the control of voltage
Luminous coloration layer 30 is become the blueness with certain GTG by Transparent color, with to the luminous material layer in red subpixel areas
203 feux rouges sent are filtered, to make up what is brought because the export license of OLED element 20 of blue subpixel areas is larger
The partially red phenomenon of picture that OLED display panel 1 is shown.
It is further alternative, include positioned at the material of the electroluminescent color-change layer 30 of red subpixel areas Prussian blue.
The Prussian blue characteristic with excellent color with voltage responsive, and its is relatively inexpensive, thus, applied to the present invention
Material in embodiment as electroluminescent color-change layer 30, it will not can cause to make being substantially improved for the cost of OLED display panel 1.
Optionally, the thickness of electroluminescent color-change layer 30 existsSo, be advantageous to meet OLED display panel
The market demand of 1 slimming.
Optionally, when OLED element 20 is bottom light emitting-type, electroluminescent color-change layer 30 may be disposed at luminous material layer 203
Between hole injection layer 206.
Specifically, electroluminescent color-change layer 30 may be disposed between luminous material layer 203 and hole transmission layer 204；Or
Electroluminescent color-change layer 30 may be disposed between hole transmission layer 204 and hole injection layer 206.
When OLED element 20 is pushes up light emitting-type, electroluminescent color-change layer 30 is arranged at luminous material layer 203 and noted with electronics
Enter between layer 207.
Specifically, electroluminescent color-change layer 30 may be disposed between luminous material layer 203 and electron transfer layer 205；Or
Electroluminescent color-change layer 30 may be disposed between electron transfer layer 205 and electron injecting layer 207.
When OLED element 20 is dual-side luminescent type, above-mentioned electroluminescent color-change layer 30 is referred to respectively in OLED element 20
For bottom light emitting-type and the set location during light emitting-type of top, will not be repeated here.
By the way that electroluminescent color-change layer 30 is arranged between luminous material layer 203 and hole injection layer 206, and/or set
It is placed between luminous material layer 203 and electron injecting layer 207, can has in these during OLED element 20 is prepared using evaporation process
During machine material layer, while prepare and form electroluminescent color-change layer 30, thus can simplification of flowsheet, reduce cost.
Optionally, substrate 10 is glass or plastics.When substrate 10 is plastics, OLED display panel 1 of the invention is soft
Property OLED display panel 1；When substrate 10 is glass, OLED display panel 1 of the invention is rigid OLED display panel 1.
On the basis of the above, optionally, the also settable thin film transistor (TFT) of each subpixel area, the drain electrode of thin film transistor (TFT)
Electrically connected with anode 201.Wherein, thin film transistor (TFT) can be amorphous silicon film transistor, polycrystalline SiTFT, oxide
Thin film transistor (TFT), OTFT etc..
A specific embodiment is provided below to describe a kind of OLED display panel 1, as shown in figure 5, including：
Substrate 10, the anode 201 for being set in turn in subpixel area on substrate 10, hole injection layer 206, hole transmission layer
204th, luminous material layer 203, electron transfer layer 205 and electron injecting layer 207, negative electrode 202 and thinner package film layer 40.Enter one
Step, become in the electroluminescent that red subpixel areas also includes being arranged between luminous material layer 203 and hole transmission layer 204
Chromatograph 30.
Wherein, the material of anode 201 is preferably transparent tin indium oxide (ITO), or transparent CNT (CNTs).
Specifically anode 201 can be formed using photoetching, etching technics afterwards first using vacuum magnetic-control sputtering method deposition thin film.
The phthalocyanine bronze (CuPc) with excellent Hole injection capacity can be used in hole injection layer 206.It can use Vacuum Heat
Evaporation coating method is formed.
The 4,4' with excellent cavity transmission ability, 4 "-three (carbazole -9- bases) triphenylamines can be used in hole transmission layer 204
(TCTA).It can be formed using vacuum thermal evaporation method.
Electroluminescent color-change layer 30 can be used it is Prussian blue, can voltage control under realize by transparent to blueness difference
The change of GTG.It can be formed using vacuum thermal evaporation method.
Luminous material layer 203 uses in red subpixel areas, green subpixel areas and blue subpixel areas respectively
Feux rouges phosphor material, green glow phosphor material and blue emitting phosphor material.It can be formed using vacuum thermal evaporation method.
The 8-hydroxyquinoline aluminium (Alq3) with excellent electron transmittability can be used in electron transfer layer 205.It can be used
Vacuum thermal evaporation method is formed.
The low-work-function materials such as the lithium fluoride (LiFe) with excellent electron injectability can be used in electron injecting layer 207.
It can be formed using vacuum thermal evaporation method.
Low-resistance magnesium alloy (Mg/Al) can be used in negative electrode 202.It can be formed using vacuum thermal evaporation method.
The forming method of thinner package film layer 40 can be, formerly by a kind of liquid monomer rapid evaporation, in vacuum environment
Condense over the substrate 10 in liquid form, and this film is dried, so that OLED element 20 is fully sealed and planarized.It is used
Liquid monomer can be the hydrocarbon solution containing aluminum-based composites.
The embodiment of the present invention also provides a kind of display device, as shown in fig. 6, including above-mentioned OLED display panel 1, setting
(such as scheme not in the light emission side of OLED display panel 1 and positioned at optical sensor 50 and IC of the viewing area 2 close to the edge of non-display area 3
Identify).
Wherein, optical sensor 50 shows the light sent during specific picture for gathering OLED display panel 1；IC is used for root
The light gathered according to optical sensor 50, chromaticity coordinates is obtained, and control is applied to the voltage on electroluminescent color-change layer 30 accordingly.
The display device of the present invention can be the display devices such as mobile phone, tablet personal computer, notebook computer, TV.
The embodiment of the present invention gathers the light sent when OLED display panel 1 shows specific picture by optical sensor 50,
So that the light that IC gathers according to optical sensor 50, obtains chromaticity coordinates, so as to can determine that the deviation of picture color and reality, and then
The voltage being applied to accordingly by control on electroluminescent color-change layer 30, to be sent to luminous material layer 203 in OLED element 20
Light is adjusted, and to improve picture color, improves image display quality, so as to improve experience in use, keeps color
It is color consistent.
The embodiment of the present invention also provides a kind of control method of above-mentioned display device, including：Optical sensor 50 gathers OLED
Display panel 1 shows the light sent during specific picture；The light that IC gathers according to optical sensor 50, obtains chromaticity coordinates, and according to
This control is applied to the voltage on electroluminescent color-change layer 30.
The control method of the display device of the embodiment of the present invention, have with above-mentioned display device identical technique effect,
This is repeated no more.
Optionally, for the luminous energy highest due to blue light, its export license is larger and causes OLED display panel 1 aobvious
The gradual partially red phenomenon of picture shown, i.e., be located at red subpixel areas, and the electroluminescent becomes in electroluminescent color-change layer 30
Chromatograph 30 can be achieved by the case of transparent to the different gray scale variations of blueness, the control method is specific under the control of voltage
Including：
S10, optical sensor 50 gather OLED display panel 1 and show the light sent during white picture.
The white light light that S11, IC gather according to optical sensor 50, obtains chromaticity coordinates, and by the chromaticity coordinates and the first benchmark
Chromaticity coordinates is compared, and judges the partially red degree of picture, the voltage being applied to control on electroluminescent color-change layer 30, makes the electricity
The blueness of certain GTG is presented in photoluminescence photochromic layer 30.
Wherein, the first reference color coordinates are theoretical white corresponding to required voltage when OLED display panel 1 shows white picture
Photochromic coordinate.
Partially red degree and GTG can have corresponding relation.Such as partially red degree can be divided into different brackets, each grade pair
Answer the blue grey decision-making of a scope.Or partially red degree is characterized with concrete numerical value, the corresponding blue ash of each numerical value
Rank is worth.
Chromaticity coordinates can use Wx and Wy to characterize, and according to intensity of variations of the Wx and Wy with respect to the first reference color coordinates, can determine whether picture
Whether face is partially red, meanwhile, partially red degree is can determine whether according to Wx changing value.
On this basis, after the partially red degree of picture is obtained, can be somebody's turn to do first compared with benchmark if partially red degree is higher than
Benchmark, then control the voltage being applied on the electroluminescent color-change layer.So, it may not be necessary in partially red degree very hour,
Apply voltage to electroluminescent color-change layer, to reduce power consumption.
Optionally, for the luminous energy highest due to blue light, its export license is larger and causes OLED display panel 1 aobvious
The gradual partially red phenomenon of picture shown, i.e., be located at red subpixel areas, and the electroluminescent becomes in electroluminescent color-change layer 30
Chromatograph 30 can be achieved by the case of transparent to the different gray scale variations of blueness, the control method is specific under the control of voltage
Including：
S20, optical sensor 50 gather OLED display panel 1 and show the light sent during red picture.
The feux rouges light that S21, IC gather according to optical sensor 50, obtains chromaticity coordinates, and by the chromaticity coordinates and the second benchmark
Chromaticity coordinates is compared, and judges the partially red degree of picture, the voltage being applied to control on electroluminescent color-change layer 30, is made electroluminescent
The blueness of certain GTG is presented in luminous coloration layer 30.
Wherein, second reference color coordinates are that the OLED display panel 1 shows required voltage pair during the red picture
The theoretical feux rouges chromaticity coordinates answered.
Partially red degree and GTG can have corresponding relation.Such as partially red degree can be divided into different brackets, each grade pair
Answer the blue grey decision-making of a scope.Or partially red degree is characterized with concrete numerical value, the corresponding blue ash of each numerical value
Rank is worth.
Chromaticity coordinates can use Wx and Wy to characterize, and according to intensity of variations of the Wx and Wy with respect to the second reference color coordinates, can determine whether picture
Whether face is partially red, meanwhile, partially red degree is can determine whether according to Wx and Wy changing value.
On this basis, after the partially red degree of picture is obtained, can be somebody's turn to do first compared with benchmark if partially red degree is higher than
Benchmark, then control the voltage being applied on the electroluminescent color-change layer.So, it may not be necessary in partially red degree very hour,
Apply voltage to electroluminescent color-change layer, to reduce power consumption.
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 OLED display panel, it is characterised in that including being arranged on substrate the OLED element of subpixel area and electroluminescent
Luminous coloration layer；The OLED element includes luminous material layer, and the electroluminescent color-change layer is arranged at the luminous material layer
The close OLED display panel exiting surface side；
Wherein, the electroluminescent color-change layer is used under the control of voltage, realizes by transparent to predetermined color difference GTG
Change.
2. OLED display panel according to claim 1, it is characterised in that the electroluminescent color-change layer is positioned at red son
Pixel region；
The predetermined color is blueness.
3. OLED display panel according to claim 2, it is characterised in that positioned at described in the red subpixel areas
The material of electroluminescent color-change layer includes Prussian blue.
4. OLED display panel according to claim 1, it is characterised in that the thickness of the electroluminescent color-change layer exists
5. OLED display panel according to claim 1, it is characterised in that the OLED element also includes anode, set
Hole injection layer and hole transmission layer, negative electrode between the anode and the luminous material layer, be arranged at the negative electrode with
Electron injecting layer and electron transfer layer between the luminous material layer；
The electroluminescent color-change layer is arranged between the luminous material layer and the hole injection layer；It is and/or described electroluminescent
Luminous coloration layer is arranged between the luminous material layer and the electron injecting layer.
6. OLED display panel according to claim 1, it is characterised in that the substrate is glass or plastics.
7. a kind of display device, it is characterised in that including the OLED display panel described in claim any one of 1-6, be arranged at
The OLED display panel light emission side and optical sensor and IC positioned at viewing area close to non-display area edge；
The optical sensor shows the light sent during specific picture for gathering OLED display panel；
The IC is used for the light gathered according to the optical sensor, obtains chromaticity coordinates, and control is applied to electroluminescent accordingly
Voltage on photochromic layer.
A kind of 8. control method of display device as claimed in claim 7, it is characterised in that including：
Optical sensor collection OLED display panel shows the light sent during specific picture；
The light that IC gathers according to the optical sensor, chromaticity coordinates is obtained, and control is applied on electroluminescent color-change layer accordingly
Voltage.
9. control method according to claim 8, it is characterised in that in the electroluminescent color-change layer positioned at red sub- picture
Plain region, and predetermined color for blueness in the case of, the control method specifically includes：
Optical sensor collection OLED display panel shows the light sent during white picture；
The white light light that IC gathers according to the optical sensor, obtains chromaticity coordinates, and by the chromaticity coordinates and the first reference color coordinates
It is compared, judges the partially red degree of picture, the voltage being applied to control on the electroluminescent color-change layer, makes described electroluminescent
The blueness of certain GTG is presented in luminous coloration layer；
Wherein, first reference color coordinates are that the OLED display panel is shown during the white picture corresponding to required voltage
Theoretical white light chromaticity coordinates.
10. control method according to claim 8, it is characterised in that in the electroluminescent color-change layer positioned at red son
Pixel region, and predetermined color for blueness in the case of, the control method specifically includes：
Optical sensor collection OLED display panel shows the light sent during red picture；
The feux rouges light that IC gathers according to the optical sensor, obtains chromaticity coordinates, and by the chromaticity coordinates and the second reference color coordinates
It is compared, judges the partially red degree of picture, the voltage being applied to control on the electroluminescent color-change layer, makes described electroluminescent
The blueness of certain GTG is presented in luminous coloration layer；
Wherein, second reference color coordinates are that the OLED display panel is shown during the red picture corresponding to required voltage
Theoretical feux rouges chromaticity coordinates.
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