CN108520889A - Organic light emitting display panel and its display device - Google Patents
Organic light emitting display panel and its display device Download PDFInfo
- Publication number
- CN108520889A CN108520889A CN201810314244.5A CN201810314244A CN108520889A CN 108520889 A CN108520889 A CN 108520889A CN 201810314244 A CN201810314244 A CN 201810314244A CN 108520889 A CN108520889 A CN 108520889A
- Authority
- CN
- China
- Prior art keywords
- cathode
- light emitting
- display panel
- emitting display
- organic light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- -1 magnesium silver Gold Chemical compound 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 65
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 230000027756 respiratory electron transport chain Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
-
- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A kind of organic light emitting display panel of offer of the embodiment of the present invention and its display device, are related to display technology field, for reducing border width, improve the pressure drop at cathode driving end, improve display effect.Organic light emitting display panel includes：First substrate, first substrate include display area and non-display area, and driving chip is located at the first side of organic light emitting display panel；Multiple organic luminescent devices of array arrangement, multiple organic luminescent devices are arranged in display area, and organic luminescent device includes cathode, and the cathode of each organic luminescent device interconnects, and form an entire cathode layer；Cathode drives end, is located at driving chip close to the side of display area, cathode drives end to be in electrical contact with cathode layer, and provides drive signal for cathode layer；Wherein, along on the first direction while to second, the thickness of cathode layer gradually increases, second one side opposite while for first.Above-mentioned organic light emitting display panel is suitable for display device.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of organic light emitting display panels and its display device.
Background technology
Compared with many display panels, OLED (Organic Light-Emitting Diode, hereinafter referred to as OLED) is aobvious
Show panel and have many advantages, such as actively to shine, high contrast, no angle limit etc. its.OLED display panel not only in volume more
Add frivolous, also below other display devices in power consumption, to help to promote the cruising ability of display device, therefore, OLED is aobvious
Show that panel is widely used in display technology field, it will be as the main product of display device from now on.
More and more with the function of display, the quantity of the various connecting lines being arranged in OLED display panel is also increasingly
More, these connecting lines are arranged in the frame of display device, and the frame size of display device can be caused larger.
With the arrival in comprehensive screen epoch, how to reduce the border width of OLED display panel, reduce border width, improves
Cathode drives the pressure drop at end, and it is the main difficult technical currently faced in the industry to improve display effect.
Invention content
In view of this, a kind of organic light emitting display panel of offer of the embodiment of the present invention and its display device, for reducing side
Width of frame improves the pressure drop at cathode driving end, improves display effect.
In a first aspect, the present invention provides a kind of organic light emitting display panel, which includes：
First substrate, the first substrate include display area and non-display area,
Driving chip, the driving chip are arranged in the non-display area, and are located at the organic light emitting display face
First side of plate；
Multiple organic luminescent devices of array arrangement, multiple organic luminescent devices are arranged in the display area
Interior, the organic luminescent device includes cathode, and the cathode of each organic luminescent device interconnects, and it is whole to form one
The cathode layer in face；
Cathode drives end, cathode driving end to be arranged in the non-display area, and positioned at driving chip close to institute
The side of display area is stated, the cathode driving end is in electrical contact with the cathode layer, and provides drive signal for the cathode layer；
Wherein, along on the described first direction while to second, the thickness of the cathode layer gradually increases, and described second
Opposite one side in first side described in Bian Weiyu.
Second aspect, the present invention provide a kind of display device, which includes involved by first aspect present invention
Organic light emitting display panel.
Having the beneficial effect that the aspect and any possible implementation manners as described above：
In the present embodiment, cathode driving end is positioned only at driving chip IC close to the side of display area, relative to existing
For technology is respectively provided with cathode driving end on four sides of organic light emitting display panel, only on one side, setting cathode drives the present embodiment
End, therefore it can be effectively reduced the border width of organic light emitting display panel, it is conducive to the realization of narrow frame.
Also, on the direction that will be far from cathode driving end (along first while to second), the thickness of cathode layer gradually increases
Greatly, according to resistance formula it is found that R=ρ L/S, wherein R indicate that resistance, ρ indicate that resistivity, L indicate that length, S indicate cross section
Product.Since the material of cathode layer is constant, the electricalresistivityρ of cathode layer is constant, although driving end (along first far from cathode
While to second) direction on, more and more remoter apart from cathode driving end, length L increases, but also therewith due to cross-sectional area S
Increasing, counteracts apart from upper pressure drop so that the resistance of the cathode in organic light emitting display panel at each position tends to be equal,
Therefore the drive signal uniformity that the organic luminescent device in organic light emitting display panel at each position receives, improves
The display effect of organic light emitting display panel.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the relation schematic diagram that cathode drives end and cathode layer in the prior art；
A kind of structural schematic diagram for the organic light emitting display panel that Fig. 2 is provided by the embodiment of the present invention；
Sectional view in Fig. 1 that Fig. 3 is provided by the embodiment of the present invention at the positions AA '；
Sectional view in Fig. 1 that Fig. 4 is provided by the embodiment of the present invention at the positions BB '；
Another structural schematic diagram for the organic light emitting display panel that Fig. 5 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 6 is provided by the embodiment of the present invention；
Sectional view in Fig. 6 that Fig. 7 is provided by the embodiment of the present invention at the positions CC '；
The structural schematic diagram for the display device that Fig. 8 is provided by the embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is the purpose only merely for description specific embodiment, is not intended to be limiting
The present invention.In the embodiment of the present invention and "an" of singulative used in the attached claims, " described " and "the"
It is also intended to including most forms, unless context clearly shows that other meanings.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate：Individualism A, exists simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
It will be appreciated that though in embodiments of the present invention organic light emitting display may be described using term first, second
The side of panel, but the side of these organic light emitting display panels should not necessarily be limited by these terms.These terms are only used for organic light emission
The side of display panel is distinguished from each other out.For example, in the case where not departing from range of embodiment of the invention, the first side can also be claimed
For the second side, similarly, second when that can also be referred to as first.
It should be noted that the nouns of locality such as "upper", "lower", "left", "right" described in the embodiment of the present invention are with attached drawing
Shown in angle come what is be described, should not be construed as the restriction to the embodiment of the present invention.In addition within a context, it is also necessary to manage
Solution can not only be formed directly into another when mentioning an element and being formed on "above" or "below" another element
Either "lower" can also be indirectly formed by intermediary element in another element "upper" or "lower" for a element "upper".
Before the detailed introduction present invention, the simple thinking for illustrating inventor and designing this programme, so as to art technology
Personnel can be better understood from this programme：
Organic luminescent device needs to provide drive signal to the cathode of each organic luminescent device in ignition, if
Each organic luminescent device is electrically connected a conducting wire, since the quantity of organic luminescent device is huger, these conducting wires
Larger space can be occupied, when conducting wire is passed through from display area, then can influence the aperture opening ratio of pixel, when conducting wire is from non-display area
When domain passes through, the width of frame can be influenced.
To solve the above-mentioned problems, the cathode of each organic luminescent device can be linked together, forms a whole face cathode
Layer, to be driven to the cathode layer, and then the cathode for each organic luminescent device provides drive signal.
However, since cathode material is using transparent conductive material, surface resistance is larger, can cause at different location pair
The drive signal that each organic luminescent device receives is different, and then influences display effect.
To solve the above-mentioned problems, in the prior art, as shown in Figure 1, it drives end and cathode for cathode in the prior art
The outside surrounding in cathode layer 140 is arranged in cathode driving end 30 by the relation schematic diagram of layer, which drives end 30 circumferential from four
Cathode layer 140 provides drive signal.
But due to the cathode of the organic luminescent device in display area different location from cathode driving end with a distance from not
Together, cause resistance different so that the drive signal of the organic luminescent device of different location had on cathode layer it is different
The loss of voltage causes the drive signal that the organic luminescent device at different location receives different, and then is lighting organic light emission
During device, the non-uniform problem of display at each position in display area is caused.
Inventor solves the problems, such as that the display of the organic luminescent device in above-mentioned display area at each position is uneven,
Devise following technical solution：
The present embodiment provides a kind of organic light emitting display panels, as shown in Fig. 2, it is had by what the embodiment of the present invention provided
A kind of structural schematic diagram of machine light emitting display panel, the organic light emitting display panel 100 include first substrate 40, first substrate 40
Including display area 10 and non-display area 20, non-display area 20 is arranged around display area 10.It is understood that this reality
It can be flexible base board to apply the first substrate 40 in example, and corresponding organic light emitting display panel 100 can be flexible organic light emitting display
Panel, flexible organic light emitting display panel have low-power consumption and the special efficacys such as flexible, are suitable for various display equipment, especially suitable
In wearable display equipment.Optionally, the material of flexible base board is polyester-imide or polyethylene terephthalate's resin.
In addition, first substrate 40 can also be rigid substrates, corresponding organic light emitting display panel 100 is rigid organic light emitting display face
Plate.In fact, the present embodiment is not particularly limited to the material of organic light emitting display panel.
As shown in Fig. 2, the organic light emitting display panel 100 further includes driving chip IC, driving chip IC settings are non-aobvious
Show in region 20, and positioned at the first side 101 of organic light emitting display panel 100.It is understood that the organic light emitting display face
Plate 100 includes head and the tail adjacent four sides successively, wherein first 102 is oppositely arranged at 101 and second.
With continued reference to Fig. 2, organic light emitting display panel 100 further includes multiple organic luminescent devices 11 of array arrangement,
Multiple organic luminescent devices 11 are arranged in display area 10, and organic luminescent device 11 includes cathode, each organic luminescent device
11 cathode interconnects, and forms an entire cathode layer 140.
With continued reference to Fig. 2, the organic light emitting display panel 100 in the present embodiment further includes cathode driving end 30, and cathode drives
Moved end 30 is arranged in non-display area 20, and positioned at driving chip IC close to the side of display area 10, and cathode drives end 30
It is in electrical contact with cathode layer 140, and drive signal is provided for cathode layer 140.
Also, as shown in figure 3, the sectional view in its Fig. 1 for being provided by the embodiment of the present invention at the positions AA ', along
On one side on the direction on 101 to the second sides 102, the thickness of cathode layer 140 gradually increases, as shown in figure 3, driving end 30 close to cathode
The thickness of the cathode layer 140 of side is y, and the thickness of the cathode layer 140 of the side far from cathode driving end 30 is x, wherein x's
Numerical value is significantly greater than the numerical value of y.In the present embodiment second when 102 can be regarded as with first 101 opposite one side.
Since organic luminescent device is distributed in each position of organic light emitting display panel, and cathode driving end is to each
During organic luminescent device transmits drive signal, remoter apart from cathode driving end, resistance is bigger, and the pressure drop of drive signal is got over
Seriously, and then the display effect of organic luminescent device can be influenced.
In the present embodiment, inventor's reverse thinking will be far from cathode driving end 30 (along first at 101 to the second
102) on direction, the thickness of cathode layer 140 gradually increases, according to resistance formula it is found that R=ρ L/S, wherein R indicate resistance, ρ
Indicate that resistivity, L indicate that length, S indicate cross-sectional area.Since the material of cathode layer 140 is constant, the electricity of cathode layer 140
Resistance rate ρ is constant, although being driven on the direction of end 30 (102 when along first while 101 to the second) far from cathode, is driven apart from cathode
Moved end 30 is increasingly remoter, and length L increases, but since the thickness of cathode layer 140 gradually increases, cross-sectional area S also increases therewith,
It counteracts apart from upper pressure drop so that the resistance of the cathode in organic light emitting display panel 100 at each position tends to be equal, changes
Sentence is talked about, the loss of voltage after being increased by the increase uncompensation distance of 140 thickness of cathode layer, and then can compensate for driving far from cathode
The droop loss of organic luminescent device 11 on the direction at end 30 (along first at 101 to the second 102), therefore organic light emission
The drive signal uniformity that organic luminescent device 11 on display panel 100 at each position receives, improves organic hair
The display effect of light display panel 100.
Although be emphasized that the present embodiment only drives in a side of organic light emitting display panel 100 setting cathode
End 30, but have no effect on the ability that drive signal is provided the cathode of each luminescent device 11 in display area 10.This is
It is larger along the first thickness at 101 to the second on 102 direction by cathode driving end 30 in this present embodiment, so as to
Ensure its contact area between cathode layer 140, can be that each organic luminescent device 11 provides corresponding drive signal, ensure
Display effect.
In order to which those skilled in the art are more apparent from this programme, it is situated between below to the structure of organic luminescent device
It continues：
As shown in figure 4, the sectional view in its Fig. 1 for being provided by the embodiment of the present invention at the positions BB ',
Each organic luminescent device 11 includes anode 12, cathode 14 and the organic work(being arranged between anode 12 and cathode 14
Ergosphere 13.Inevitable, the anode 12 of multiple organic luminescent devices 11 constitutes the anode layer of a flood, more in preparation process
A anode can be prepared simultaneously, save process, and then reach the purpose for saving cost.
In the present embodiment, positive voltage can be applied to anode 12 during electroluminescent.Anode 12 in the present embodiment
Material can be transparent conductive film, such as tin indium oxide or indium zinc oxide.Specifically, anode 12 includes at least reflective membrane,
Reflective membrane can be located at anode 12 on a side surface of luminescent layer 13, and the material of reflective membrane can be silver.Also, electroluminescent
It can apply negative voltage to cathode 14 in luminescence process.
It should be noted that above-mentioned Fig. 4 shows emission structure at top, in emission structure at top, which can be complete
Reflection anode, cathode 14 can be semitransparent cathode, wherein total reflection anode constitutes microcavity (resonant cavity) with semitransparent cathode, when
When microcavity chamber is grown and optical wavelength meets certain relationship, the light of specific wavelength (a certain monochromatic wavelength) can be strengthened, light
Spectrum narrows, and microcavity effect occurs.Microcavity effect has the effects that selection to light source, narrows and reinforce, and is often used to improve organic
The coloration of luminescent device, the emissive porwer for reinforcing specific wavelength and the luminescent color etc. for changing organic luminescent device.But it needs
Illustrate, the organic luminescent device in the present embodiment also can be bottom emitting structure, not carried out to it especially in the present embodiment
It limits, specific structure can be depending on specific product.
Organic light emitting display panel 100 in the present embodiment can have m kinds to go out light color, and m is whole more than or equal to 3
Number, illustrative the present embodiment may include that three kinds go out light color, respectively red, green and blue, each organic illuminator
Part 11 corresponds to one kind and going out light color.
In the present embodiment, cathode driving end 30 is positioned only at driving chip IC close to the side of display area 10, relative to
For the prior art is respectively provided with cathode driving end on four sides of organic display panel, the present embodiment on one side due to being only arranged cathode
End 30 is driven, cathode driving end 30 is not not provided on the both sides adjacent with the first side 101, therefore can be effectively reduced
The border width of machine light emitting display panel 100.Also, (the first side 101 to the second on the direction due to driving end 30 far from cathode
On the direction on side 102), the thickness of cathode layer 140 is increasing so that each organic hair in organic light emitting display panel 100
The drive signal that the cathode 14 of optical device 11 receives tends to uniformity, therefore in terms of existing technologies, the present embodiment
The pressure drop at cathode driving end can effectively be improved, and then improve display effect.
In order to which those skilled in the art can be apparent from the present embodiment, below to the organic light emitting display of the present embodiment
The principle of luminosity of panel is simply introduced：
As shown in figure 5, another structural schematic diagram of its organic light emitting display panel provided by the embodiment of the present invention,
Organic function layer 13 included by organic luminescent device 11 includes electron transfer layer 131, hole transmission layer 133 and luminescent layer
132, wherein electron transfer layer 131 is arranged close to cathode 14, and hole transmission layer 133 is arranged close to anode 12, and luminescent layer 132 is located at
Between electron transfer layer 131 and hole transmission layer 133.Under the action of extra electric field, electronics e is from cathode 14 to organic function layer
13 injections, hole h are injected from anode 12 to organic function layer 13.Electron transfer layers of the injected electrons e from organic function layer 13
131 migrate to luminescent layer 132, and injected holes h is migrated from the hole transmission layer 133 of organic function layer 13 to luminescent layer 132.Note
The electronics e and injected holes h entered generates exciton after luminescent layer 132 is compound.Exciton migrates under the action of electric field, by energy
The luminescent organic molecule in luminescent layer 132 is passed to, the electronics of luminescent organic molecule by ground state transition to excitation state and discharges energy
Amount, last energy are discharged and are emitted beam by the form of photon.
In one embodiment, with continued reference to Fig. 2, which further includes at least one connection
One end of line 50, connecting line 50 is electrically connected with cathode driving end 30, and the other end is electrically connected with driving chip IC, which will
Drive signal in driving chip IC drives end 30 to be transmitted to cathode layer 140 by cathode, and then is transmitted to each organic light emission
In the cathode 14 of device 11, to ensure the display of each organic luminescent device 11.
Further, with continued reference to Fig. 2, which includes two connecting lines 50.Two connecting lines
50 is in parallel by driving chip IC, therefore the resistance value of connecting line 50 is smaller, and cathode drive is transmitted to improve driving chip IC
The accuracy of the drive signal of moved end 30.In addition, the driving port of driving chip IC is limited, consider the cost of driving chip IC with
After effect, the item number of connecting line 50 is preferably arranged to two by the present embodiment.
In one embodiment, as shown in fig. 6, its organic light emitting display panel provided by the embodiment of the present invention
Another structural schematic diagram, multiple organic luminescent devices 11 include at least out the organic luminescent device 111 that light color is red, go out
Light color be green organic luminescent device 112 and go out light color be blue organic luminescent device 113.It should be noted that
Illustratively, Fig. 6 shows the arrangement mode for the organic luminescent device that three kinds go out light color, but in fact, three kinds of light extraction face
There are many arrangement modes of the organic luminescent device of color, and the present embodiment is not particularly limited it, can be according to specific production
Depending on product.
It further, should as shown in fig. 7, sectional view in its Fig. 6 for being provided by the embodiment of the present invention at the positions CC '
Organic light emitting display panel 100 further includes pixel defining layer 60, and it is having for red that pixel defining layer 60, which is used to mark off light color,
Machine luminescent device 111 goes out organic luminescent device 112 and go out the organic luminescent device that light color is blue that light color is green
113.Pixel defining layer 60 can also adjust the lighting area of each organic luminescent device 11, be illustratively red to go out light color
Organic luminescent device 111 for, pixel defining layer 60 is to going out the shielded area that light color is red organic luminescent device 111
Bigger, then the light-emitting window of feux rouges is smaller；Conversely, pixel defining layer 60 is red organic luminescent device 111 to going out light color
Shielded area is smaller, then the light-emitting window of feux rouges is bigger, and light extraction is more.In fact, not to each organic light emission in the present embodiment
The lighting area of device 11 is particularly limited, and concrete numerical value can be depending on different products.
Further, with continued reference to Fig. 7, in non-display area 20, which is additionally operable to control cathode
The contact area of layer 140 and cathode driving end 30.It is the opening that controllable cathode drives end 30 by controlling pixel defining layer 60,
And then the contact area of remaining cathode layer 140 is controlled, additional film layer is needed to control the contact area of said two devices, to reach
To the purpose for simplifying preparation process.In addition, pixel defining layer 60 also can be used as protective layer protection cathode driving end 30, its quilt is avoided
Oxidation.
In one embodiment, the material of cathode 14 can be Ag, Al, Ca, In, Li, the low workfunction metals material such as Mg
Or low work function composite material.The material of cathode layer in this example can be magnesium silver alloy or magnesium metal.Magnesium silver closes
The work function of gold and magnesium metal is relatively low, is conducive to the electron transition of cathode generation to luminescent layer, and then improve answering for electrons and holes
Conjunction rate improves light extraction efficiency.And the electric conductivity of the two is also fine, cheap, is conducive to save cost.
In one embodiment, the material at cathode driving end 30 is aluminium, this is because the electric conductivity of aluminium is relatively good, profit
In the transmission of drive signal.It needs, in order to protect aluminium not oxidized in organic layer, aluminium can be also wrapped in by this implementation
In metal molybdenum, i.e., cathode driving end 30 is prepared into molybdenum, aluminium, molybdenum three-decker in preparation process, and then play protection aluminium
Purpose.
The present embodiment provides a kind of display devices, as shown in figure 8, its display device provided by the embodiment of the present invention
Structural schematic diagram, the display device 500 include the organic light emitting display panel 100 involved by the present embodiment.It needs to illustrate
Be, Fig. 8 using mobile phone as display device for carry out example, but display device is not limited to mobile phone, specifically, the display fills
It sets and can include but is not limited to personal computer (Personal Computer, PC), personal digital assistant (Personal
Digital Assistant, PDA), radio hand-held equipment, tablet computer (Tablet Computer), MP4 players or TV
Any electronic equipment with display function such as machine.
In the present embodiment, which includes above-mentioned organic light emitting display panel 100, in the display device 500
In, cathode driving end 30 is positioned only at driving chip IC close to the side of display area, compared with the existing technology in organic light emission
Four sides of display panel are respectively provided with for cathode driving end, and only on one side, setting cathode drives end to the present embodiment, therefore can be effective
Ground reduces the border width of organic light emitting display panel, is conducive to the realization of narrow frame.
Also, on the direction that will be far from cathode driving end (along first while to second), the thickness of cathode layer gradually increases
Greatly, according to resistance formula it is found that R=ρ L/S, wherein R indicate that resistance, ρ indicate that resistivity, L indicate that length, S indicate cross section
Product.Since the material of cathode layer is constant, the electricalresistivityρ of cathode layer is constant, although driving end (along first far from cathode
While to second) direction on, more and more remoter apart from cathode driving end, length L increases, but due to the thickness of cathode layer 140
Gradually increase, cross-sectional area S also increases, counteracts apart from upper pressure drop therewith so that each position in organic light emitting display panel
The resistance of the cathode at the place of setting tends to be equal, therefore the organic luminescent device in organic light emitting display panel at each position receives
Drive signal uniformity, improve the display effect of organic light emitting display panel.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of organic light emitting display panel, which is characterized in that including：
First substrate, the first substrate include display area and non-display area,
Driving chip, the driving chip are arranged in the non-display area, and positioned at the organic light emitting display panel
First side；
Multiple organic luminescent devices of array arrangement, multiple organic luminescent devices are arranged in the display area, institute
It includes cathode to state organic luminescent device, and the cathode of each organic luminescent device interconnects, and it is entire to form one
Cathode layer；
Cathode drives end, cathode driving end to be arranged in the non-display area, and positioned at driving chip close to described aobvious
Show the side in region, the cathode driving end is in electrical contact with the cathode layer, and provides drive signal for the cathode layer；
Wherein, along on the described first direction while to second, the thickness of the cathode layer gradually increases, and second side is
One side opposite with first side.
2. organic light emitting display panel according to claim 1, which is characterized in that further include：
At least one connecting line, one end of the connecting line are electrically connected with cathode driving end, the other end and the driving core
Piece is electrically connected.
3. organic light emitting display panel according to claim 2, which is characterized in that including two connecting lines.
4. organic light emitting display panel according to claim 1, which is characterized in that multiple organic luminescent devices are at least
It is blue including going out organic luminescent device that light color is red, going out organic luminescent device that light color is green and go out light color
Organic luminescent device.
5. organic light emitting display panel according to claim 4, which is characterized in that further include：
Pixel defining layer, the pixel defining layer, which is used to mark off the organic luminescent device that light color is red, goes out light color, is
Green organic luminescent device and go out light color be blue organic luminescent device.
6. organic light emitting display panel according to claim 5, which is characterized in that the pixel defining layer is additionally operable to control
The contact area of the cathode layer and cathode driving end.
7. organic light emitting display panel according to claim 1, which is characterized in that the material of the cathode layer is closed for magnesium silver
Gold or magnesium metal.
8. organic light emitting display panel according to claim 1, which is characterized in that the material at cathode driving end is
Aluminium.
9. a kind of display device, which is characterized in that the display device, which includes 1~8 any one of them of the claims, to be had
Machine light emitting display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314244.5A CN108520889A (en) | 2018-04-10 | 2018-04-10 | Organic light emitting display panel and its display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314244.5A CN108520889A (en) | 2018-04-10 | 2018-04-10 | Organic light emitting display panel and its display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108520889A true CN108520889A (en) | 2018-09-11 |
Family
ID=63432328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810314244.5A Pending CN108520889A (en) | 2018-04-10 | 2018-04-10 | Organic light emitting display panel and its display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108520889A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461766A (en) * | 2018-11-13 | 2019-03-12 | 惠科股份有限公司 | Display device and display system |
| CN109686863A (en) * | 2019-01-18 | 2019-04-26 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN109713161A (en) * | 2018-12-26 | 2019-05-03 | 云谷（固安）科技有限公司 | Organic light emitting display panel and preparation method thereof, organic light-emitting display device |
| CN110224079A (en) * | 2019-06-14 | 2019-09-10 | 京东方科技集团股份有限公司 | Display base plate, production method and display device |
| CN110379831A (en) * | 2019-06-11 | 2019-10-25 | 惠科股份有限公司 | A kind of display panel and display device |
| CN113193147A (en) * | 2021-04-27 | 2021-07-30 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2023279462A1 (en) * | 2021-07-07 | 2023-01-12 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949531A (en) * | 2005-10-14 | 2007-04-18 | Lg电子株式会社 | Light emitting device |
| CN104064686A (en) * | 2014-06-16 | 2014-09-24 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display device |
| CN104091818A (en) * | 2014-06-23 | 2014-10-08 | 上海天马有机发光显示技术有限公司 | OLED panel, device and manufacturing method thereof |
| CN105702872A (en) * | 2016-02-03 | 2016-06-22 | 昆山工研院新型平板显示技术中心有限公司 | Uniform brightness display screen body |
| US20170237035A1 (en) * | 2012-12-13 | 2017-08-17 | Universal Display Corporation | System and method for matching electrode resistances in oled light panels |
-
2018
- 2018-04-10 CN CN201810314244.5A patent/CN108520889A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949531A (en) * | 2005-10-14 | 2007-04-18 | Lg电子株式会社 | Light emitting device |
| US20170237035A1 (en) * | 2012-12-13 | 2017-08-17 | Universal Display Corporation | System and method for matching electrode resistances in oled light panels |
| CN104064686A (en) * | 2014-06-16 | 2014-09-24 | 上海天马有机发光显示技术有限公司 | Organic light-emitting display device |
| CN104091818A (en) * | 2014-06-23 | 2014-10-08 | 上海天马有机发光显示技术有限公司 | OLED panel, device and manufacturing method thereof |
| CN105702872A (en) * | 2016-02-03 | 2016-06-22 | 昆山工研院新型平板显示技术中心有限公司 | Uniform brightness display screen body |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461766A (en) * | 2018-11-13 | 2019-03-12 | 惠科股份有限公司 | Display device and display system |
| CN109713161A (en) * | 2018-12-26 | 2019-05-03 | 云谷（固安）科技有限公司 | Organic light emitting display panel and preparation method thereof, organic light-emitting display device |
| CN109713161B (en) * | 2018-12-26 | 2021-04-02 | 云谷（固安）科技有限公司 | Organic light-emitting display panel, manufacturing method thereof and organic light-emitting display device |
| CN109686863A (en) * | 2019-01-18 | 2019-04-26 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN110379831A (en) * | 2019-06-11 | 2019-10-25 | 惠科股份有限公司 | A kind of display panel and display device |
| CN110224079A (en) * | 2019-06-14 | 2019-09-10 | 京东方科技集团股份有限公司 | Display base plate, production method and display device |
| CN110224079B (en) * | 2019-06-14 | 2022-06-14 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method and display device |
| CN113193147A (en) * | 2021-04-27 | 2021-07-30 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2023279462A1 (en) * | 2021-07-07 | 2023-01-12 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108520889A (en) | Organic light emitting display panel and its display device | |
| CN106611826B (en) | Quantum stippling film display panel and preparation method thereof | |
| CN101582440B (en) | Light emitting device and electronic apparatus | |
| CN103715231B (en) | Organic electroluminescence display panel, display device | |
| CN104752623B (en) | Organnic electroluminescent device and organic electroluminescence display device and method of manufacturing same | |
| JP5411469B2 (en) | LIGHT EMITTING DEVICE AND ELECTRONIC DEVICE | |
| US20080203898A1 (en) | Display device | |
| US8304977B2 (en) | Light emitting device and electronic device | |
| CN103633111A (en) | Organic light-emitting diode and method of fabricating the same | |
| KR20070078599A (en) | Organic light emitting display providing transparent cathode | |
| TW201926676A (en) | Organic light emitting diode display | |
| TW200536433A (en) | Organic light-emitting diode, display device, and telecommunication employing the same | |
| JP2007242927A (en) | Light emitting device, and method of manufacturing light emitting device | |
| CN108550713B (en) | Organic light emitting display panel and display device thereof | |
| CN102064184A (en) | Light emitting device and electronic device | |
| CN109256491A (en) | Display panel, display module and electronic device | |
| CN108493350A (en) | A kind of organic light emitting display panel and its display device | |
| CN109166905B (en) | Display panel and display device thereof | |
| CN101257035B (en) | Organic electroluminescence display device with top luminous | |
| KR20020025862A (en) | Organic el display | |
| CN108389978B (en) | Organic light-emitting display panel and organic light-emitting display device thereof | |
| US20190088905A1 (en) | Organic light-emitting display panel and organic light-emitting display device | |
| JP2005332616A (en) | Organic electroluminescence display device and electronic apparatus | |
| KR100796601B1 (en) | Organic electroluminescence display device | |
| US20240021133A1 (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211110 Address after: 430205 No. 8, liufangyuanheng Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Applicant after: WUHAN TIANMA MICROELECTRONICS Co.,Ltd. Address before: 201201 room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai Applicant before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180911 |
|
| RJ01 | Rejection of invention patent application after publication |