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CN110021649A - A kind of OLED display panel - Google Patents

A kind of OLED display panel Download PDF

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Publication number
CN110021649A
CN110021649A CN201910242071.5A CN201910242071A CN110021649A CN 110021649 A CN110021649 A CN 110021649A CN 201910242071 A CN201910242071 A CN 201910242071A CN 110021649 A CN110021649 A CN 110021649A
Authority
CN
China
Prior art keywords
area
barricade
cutting
display panel
oled display
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
Application number
CN201910242071.5A
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Chinese (zh)
Inventor
陈哲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to CN201910242071.5A priority Critical patent/CN110021649A/en
Publication of CN110021649A publication Critical patent/CN110021649A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • H10K50/844Encapsulations
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application provides a kind of OLED display panel, including viewing area, cutting area and the cabling area between the viewing area and the cutting area;Cutting Road and the first barricade are equipped in the cutting area, first barricade is located at the Cutting Road close to the side in the cabling area, and is arranged along the Cutting Road extending direction;At least two first barricades are spaced apart along the cutting area to the direction in the cabling area;Cathode layer is prepared in the viewing area, the cabling area and the cutting area;Wherein, the cathode layer corresponds to the part of the cutting area and the part in the corresponding cabling area is in off-state at first barricade, to promote the reliability of cutting section after OLED display panel cutting.

Description

A kind of OLED display panel
Technical field
This application involves field of display technology more particularly to a kind of OLED display panels.
Background technique
With the arrival in comprehensive screen epoch, the application of flexible display obtains a period for sufficiently showing advantage, utilizes The specific properties of flexible bendable can realize ultra-narrow frame, even boundless by the frame folded concealed of display in back Frame effect.Meanwhile screen also brings some other technical problems, such as front camera to will have to be placed in face and show comprehensively Region, " Liu Haiping " seen on the market this creates the terminal us, " water droplet screen " etc. make these abnormity display screen needs Use abnormity cutting technology, such as U-CUT, O-CUT.When especially O-CUT, since the possible face in display surface occurs for cutting The problem of facing reliability, such as cutting section crack risk, moisture attacks risk etc..
Therefore, the prior art is defective, needs to improve.
Summary of the invention
The application provides a kind of OLED display panel, to solve to produce in display surface when existing display panel carries out abnormity cutting Raw crackle risk and moisture attacks risk etc..
To solve the above problems, technical solution provided by the present application is as follows:
The application provides a kind of OLED display panel, including viewing area, cutting area and be located at the viewing area with it is described Cabling area between cutting area;
Cutting Road and the first barricade are equipped in the cutting area, first barricade is located at the Cutting Road close to described The side in cabling area, and be arranged along the Cutting Road extending direction;
At least two first barricades are spaced apart along the cutting area to the direction in the cabling area;
Cathode layer is prepared in the viewing area, the cabling area and the cutting area;
Wherein, the cathode layer corresponds to the part of the cutting area with the part in the corresponding cabling area in the first gear It is in off-state at wall.
In the OLED display panel of the application, gap, the cathode layer are formed between adjacent two first barricade It is disconnected in the gap location.
In the OLED display panel of the application, the width in the gap between adjacent two first barricade is 1um Between~30um.
In the OLED display panel of the application, the height of adjacent two first barricade is equal or different.
In the OLED display panel of the application, first barricade is by the inoranic membrane in the OLED display panel and has Machine film is superimposed to be formed.
In the OLED display panel of the application, first barricade include gate insulation layer, interlayer insulating film, passivation layer, One of planarization layer, pixel defining layer and separation pad or more than one material are formed.
In the OLED display panel of the application, it is equipped with signal lead and the second barricade in the cabling area, described the Second gear walled is distributed around the viewing area.
In the OLED display panel of the application, the height of second barricade is less than the height of first barricade.
In the OLED display panel of the application, second barricade includes one of pixel defining layer and separation pad Or more than one material is formed.
In the OLED display panel of the application, the first gear walled is in continuously distributed around the Cutting Road, or is surrounded The Cutting Road is spaced apart in multisection type.
The application's has the beneficial effect that compared to existing special-shaped display panel, OLED display panel provided by the present application, Barricade is added by the Cutting Road periphery in abnormity cutting area, which can be used as stress release layer, stop because generating after cutting Crackle continue the path that into face viewing area extends, in addition can also stop to cut it is exposed after extraneous steam intrusion path and The path that viewing area extends into face after exposed electrode corrosion, to promote the letter of cutting section after special-shaped display panel cutting Lai Du reduces face internal fissure occurrence risk and stops moisture attacks and electrode corrosion, it is ensured that the performance of display panel.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of application Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these Figure obtains other attached drawings.
Fig. 1 is a kind of partial schematic diagram of OLED display panel provided by the embodiments of the present application;
Fig. 2 is OLED display panel in Fig. 1 along the sectional view of M-M ';
Fig. 3 is the partial schematic diagram of another OLED display panel provided by the embodiments of the present application;
Fig. 4 is the partial schematic diagram of another OLED display panel provided by the embodiments of the present application.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the application Example.The direction term that the application is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side] Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the application, rather than to Limit the application.The similar unit of structure is with being given the same reference numerals in the figure.
The application for existing special-shaped display panel, ask by the lower technology of reliability for depositing cutting section after dicing Topic, the present embodiment are able to solve the defect.
As shown in Figure 1, being a kind of partial schematic diagram of OLED display panel provided by the embodiments of the present application.The OLED is aobvious Show that panel includes viewing area A, cutting area C and the cabling area B between the viewing area A and the cutting area C.It is described to cut It cuts and is equipped with Cutting Road 500 and the first barricade 300 in area C, first barricade 300 is located at the Cutting Road 500 close to described The side of cabling area B, and be arranged along 500 extending direction of Cutting Road.Wherein, at least two first barricades 300 are along described Cutting area C is spaced apart to the direction of the cabling area B.
First barricade 300 by the OLED display panel inoranic membrane and organic film be superimposed and formed.And it is adjacent It is formed with gap between two first barricades 300, the width in the gap is between 1um~30um.
First barricade 300 can be in continuously distributed around the Cutting Road 500, or be in around the Cutting Road 500 Multisection type is spaced apart, or is interspersed, herein with no restrictions.
Two first barricades 300 are only illustrated in figure, but it is not limited to this, in other embodiments, the cutting It is provided with multiple first barricades 300 in area C, and successively divides along the cutting area C to the direction interval of the cabling area B Cloth.
In another embodiment, first barricade 300 is located in the cabling area B close to the one of the cutting area C Side.
In another embodiment, it is leaned in the peripheral and described cabling area B of the Cutting Road 500 of the cutting area C The side of the nearly cutting area C is provided with first barricade 300.
When the general OLED display panel carries out evaporation cathode layer material, the cathode layer of formation can cover the viewing area A, the cabling area B and cutting area C.Since the gap between adjacent two first barricade 300 is smaller, work as yin Pole layer material is in vapor deposition, due to the barrier action of " M shape " ridge structure formed by adjacent two first barricade 300, Only minimal amount of evaporation material can enter the gap between first barricade 300, and the continuity of cathode layer is with regard to this quilt It interrupts.After the cathode layer of cutting section is because of the exposed corrosion effect of generation outside after cutting, corrosion can be taken advantage of a situation spreads into face, and The open circuit of the cathode layer as caused by first barricade 300 can will just corrode pathway disruption, in protection face from It corrodes.
It is to answer in the 300 gully bottom of the first barricade in addition, being influenced by the 300 fluctuating pattern of the first barricade Power most concentrated area, the crackle generated after cutting can terminate here, i.e. stress " the M shape " that is formed in first barricade 300 It is released at ridge structure, so that Crack prevention continues to extend into face.In addition, the complicated pattern of first barricade 300 Structure can also obstruct in the steam intrusion face of external environment.
As shown in Fig. 2, being OLED display panel in Fig. 1 along the sectional view of M-M '.The OLED display panel includes glass Substrate 1 is prepared with multilayer inoranic membrane and organic film on the glass substrate 1, is prepared with array distribution in the viewing area A Thin film transistor (TFT) 100 and OLED device 200 are prepared with signal lead 15 in the cabling area B.Wherein, multilayer inoranic membrane It include but is not limited to flexible layer 2 (polyimide film), buffer layer 3, the first gate insulation layer 4, the second gate insulation layer with organic film 5, interlayer insulating film 6, passivation layer 7, the first flatness layer 8, the second flatness layer 9, pixel defining layer 10, separation pad 11 and film envelope Fill layer etc..
Cutting Road (as shown in figure 1 500) and the first barricade 300, first barricade 300 are equipped in the cutting area C Positioned at the Cutting Road close to the side of the cabling area B.In the figure two first barricades 300 along the cutting area C to The direction of the cabling area B is spaced apart.The width in the gap between adjacent two first barricade 300 be 5um~ Between 10um.
First barricade 300 is superimposed by multilayer inoranic membrane and organic film to be formed.First barricade 300 includes but unlimited In first gate insulation layer 4, second gate insulation layer 5, the interlayer insulating film 6, the passivation layer 7, described first flat One of smooth layer 8, second flatness layer 9, the pixel defining layer 10 and described separation pad 11 or more than one material Material superposition is formed.
Wherein, the OLED device 200 includes anode layer 201, luminescent layer 202 and cathode layer 203, the cathode layer 203 it is entire be prepared on the display panel, due to the design of first barricade 300 so that the cathode layer 203 steam It plates in processing procedure, only minimal amount of evaporation material can enter the gap between first barricade 300, therefore, so that institute The part for stating the corresponding cutting area C of cathode layer 203 is formed with the part of the corresponding cabling area B in first barricade 300 The gap location be in off-state, so that the metal in face be prevented to be corroded.
In the present embodiment, the height of adjacent two first barricade 300 is equal, and but it is not limited to this, in other embodiments In, the height of adjacent two first barricade 300 can also be unequal, as long as can cause the pattern of height fluctuating and can interrupt The continuity of the cutting area C and the cabling area B internal cathode layer or metallic signal lines.
The second barricade 400 is additionally provided in the cabling area B, second barricade 400 is distributed around the viewing area A.Its In, second barricade 400 includes that one of pixel defining layer 10 and the separation pad 11 or more than one material are folded Add to be formed.
In the present embodiment, the height of second barricade 400 is less than the height of first barricade 300, and to institute State the number of the second barricade 400 with no restrictions.
The display panel further includes multilayer inoranic membrane and the organic film thin-film encapsulation layer that alternately superposition is formed, in figure only with First inorganic encapsulated layer 12, organic encapsulation layer 13, the second inorganic encapsulated layer 14 three-decker for.Wherein, organic envelope Dress layer 13 is stopped by second barricade 400, to prevent the organic encapsulation layer 13 from overflowing to guarantee the thin-film encapsulation layer Reliability.The first inorganic encapsulated layer 12 is formed in second barricade with the second inorganic encapsulated layer 14 stacking 400 and first barricade 300 surface so that second barricade 400 and first barricade 300 form " M shape " Ridge structure.
When being cut to the cutting area C, the stress of generation can from the cutting area C to the cabling area B and The viewing area A conduction, when stress, which arrives greatly, cracks the inorganic film near the Cutting Road, conducts in crackle to " M It can be terminated here when shape " ridge structure, stress is released, so that Crack prevention continues to extend into face.And described second Barricade 400 also plays the effect of second protective barrier simultaneously, further enhances the reliability of cutting section.
In another embodiment, the cathode layer 203 can also be broken at second barricade 400, and described second The distribution of barricade 400 is similar to the distribution of first barricade 300, so that further strengthening prevents metal electrode in face to be corroded Risk.
In the present embodiment, in addition the preparation of first barricade 300 and second barricade 400 and not having to increases new Making technology is formed on the basis of existing OLED display panel making technology.That is, being carried out in the viewing area A When patterned processing procedure, be completed at the same time the cutting area C first barricade 300 and the cabling area B described second The patterning process of barricade 400.
For example, first barricade 300 is forming source-drain electrode via hole, 10 pattern of anode via hole and the pixel defining layer It is formed when changing with the separation pad 11 patterning;Second barricade 400 is in the pixel defining layer 10 and the separation pad 11 It is formed when being patterned.
The present embodiment to the cross sectional shape of single first barricade 300 without limitation, can for triangle, it is trapezoidal and Other polygons etc..But because guaranteeing to form gap deep enough between adjacent two first barricade 300, to guarantee the yin Pole layer 203 can be broken in the gap location.
As shown in figure 3, for the partial schematic diagram of another OLED display panel provided by the embodiments of the present application.The OLED Display panel includes viewing area A, cutting area C and the cabling area B between the viewing area A and the cutting area C.It is described Cutting area C is located at the inside of the viewing area A, and is equipped with Cutting Road 500 and the first barricade 300, first barricade 300 In the Cutting Road 500 close to the side of the cabling area B, and around the Cutting Road 500 1 circle setting.Wherein, at least two First barricade 300 is spaced apart along the cutting area C to the direction of the cabling area B.And adjacent two first gear Gap is formed between wall 300, cathode layer is broken in the gap location, specifically please refers to the description in Fig. 1, details are not described herein again.
As shown in figure 4, being the partial schematic diagram of another OLED display panel provided by the embodiments of the present application.The OLED Display panel includes viewing area A, cutting area C and the cabling area B between the viewing area A and the cutting area C.It is described Cutting area C is U-shaped region, interior to be equipped with Cutting Road 500 and the first barricade 300, and first barricade 300 is located at the Cutting Road 500 close to the side of the cabling area B, and is arranged along 500 extending direction of Cutting Road.Wherein, at least two first gear Wall 300 is spaced apart along the cutting area C to the direction of the cabling area B.And shape between adjacent two first barricade 300 At gap, cathode layer is broken in the gap location, specifically please refers to the description in Fig. 1, details are not described herein again.
In conclusion OLED display panel provided by the present application, adds gear by the Cutting Road periphery in abnormity cutting area Wall, the barricade can be used as stress release layer, stop to continue the path that viewing area extends into face because of the crackle generated after cutting, separately The viewing area extension into face behind the outer path that can also stop to cut exposed rear extraneous steam intrusion and exposed electrode corrosion Path, to promote the reliability of cutting section after special-shaped display panel cutting, reduce face internal fissure occurrence risk and stop water Vapour corrodes and electrode corrosion, it is ensured that the performance of display panel.In addition, existing equipment and technique can make, without changing machine and increase Other extra costs.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment The application processed, those skilled in the art are not departing from spirit and scope, can make various changes and profit Decorations, therefore the protection scope of the application subjects to the scope of the claims.

Claims (10)

1. a kind of OLED display panel, which is characterized in that cut including viewing area, cutting area and positioned at the viewing area with described Cut the cabling area between area;
Cutting Road and the first barricade are equipped in the cutting area, first barricade is located at the Cutting Road close to the cabling The side in area, and be arranged along the Cutting Road extending direction;
At least two first barricades are spaced apart along the cutting area to the direction in the cabling area;
Cathode layer is prepared in the viewing area, the cabling area and the cutting area;
Wherein, the cathode layer corresponds to the part of the cutting area with the part in the corresponding cabling area at first barricade In off-state.
2. OLED display panel according to claim 1, which is characterized in that be formed between adjacent two first barricade Gap, the cathode layer are disconnected in the gap location.
3. OLED display panel according to claim 2, which is characterized in that described between adjacent two first barricade The width in gap is between 1um~30um.
4. OLED display panel according to claim 1, which is characterized in that the height of adjacent two first barricade is equal Or differ.
5. OLED display panel according to claim 1, which is characterized in that first barricade is by the OLED display surface Inoranic membrane and organic film on plate are superimposed to be formed.
6. OLED display panel according to claim 5, which is characterized in that first barricade includes gate insulation layer, layer Between one of insulating layer, passivation layer, planarization layer, pixel defining layer and separation pad or more than one material formed.
7. OLED display panel according to claim 1, which is characterized in that in the cabling area be equipped with signal lead and Second barricade, the second gear walled are distributed around the viewing area.
8. OLED display panel according to claim 7, which is characterized in that the height of second barricade is less than described the The height of one barricade.
9. OLED display panel according to claim 7, which is characterized in that second barricade include pixel defining layer with And one of separation pad or more than one material are formed.
10. OLED display panel according to claim 1, which is characterized in that the first gear walled is around the Cutting Road It is spaced apart in continuously distributed, or around the Cutting Road in multisection type.
CN201910242071.5A 2019-03-28 2019-03-28 A kind of OLED display panel Pending CN110021649A (en)

Priority Applications (1)

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CN201910242071.5A CN110021649A (en) 2019-03-28 2019-03-28 A kind of OLED display panel

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Application Number Priority Date Filing Date Title
CN201910242071.5A CN110021649A (en) 2019-03-28 2019-03-28 A kind of OLED display panel

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Cited By (4)

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CN110739342A (en) * 2019-11-28 2020-01-31 京东方科技集团股份有限公司 Display panel, preparation method thereof and display device
CN110993821A (en) * 2019-12-10 2020-04-10 武汉华星光电半导体显示技术有限公司 OLED display panel
CN111403627A (en) * 2020-03-26 2020-07-10 武汉华星光电半导体显示技术有限公司 Display panel, manufacturing method thereof and display device
CN111785658A (en) * 2020-08-03 2020-10-16 京东方科技集团股份有限公司 Display panel and display device

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CN109427861A (en) * 2017-09-04 2019-03-05 三星显示有限公司 Display device and its manufacturing method

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Publication number Priority date Publication date Assignee Title
CN110739342A (en) * 2019-11-28 2020-01-31 京东方科技集团股份有限公司 Display panel, preparation method thereof and display device
CN110739342B (en) * 2019-11-28 2022-10-11 京东方科技集团股份有限公司 Display panel, preparation method thereof and display device
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Application publication date: 20190716