CN103779377A - Organic light emitting display and manufacture method thereof - Google Patents

Organic light emitting display and manufacture method thereof Download PDF

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Publication number
CN103779377A
CN103779377A CN201210411203.0A CN201210411203A CN103779377A CN 103779377 A CN103779377 A CN 103779377A CN 201210411203 A CN201210411203 A CN 201210411203A CN 103779377 A CN103779377 A CN 103779377A
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CN
China
Prior art keywords
layer
cathode layer
light emitting
active driving
organic light
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CN201210411203.0A
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Chinese (zh)
Inventor
郭咨吟
谢信弘
李孟庭
方俊雄
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友达光电股份有限公司
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Priority to CN201210411203.0A priority Critical patent/CN103779377A/en
Publication of CN103779377A publication Critical patent/CN103779377A/en

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Abstract

An organic light emitting display comprises a first substrate, an active driving element, an organic light emitting element and a transparent protective layer; the active driving element is arranged on the first substrate and is located at an opaque region; the organic light emitting element is arranged above the active driving element and includes an anode layer, an organic light emitting functional layer, a first cathode layer and a second cathode layer which are sequentially arranged above the active driving element; the anode layer is electrically connected with the active driving element; the organic light emitting functional layer is connected with the anode layer and the first cathode layer; and the transparent protective layer is arranged between the active driving element and the organic light emitting element as well as between the first cathode layer and the second cathode layer. The organic light emitting display has high penetration rate and high luminescent intensity. The invention also provides a manufacture method of the organic light emitting display.

Description

Organic light emitting display and preparation method thereof

Technical field

The present invention relates to a kind of organic light emitting display and preparation method thereof.

Background technology

Organic Light Emitting Diode (organic light emitting diode, OLED) display, be called again organic electric lighting displaying device (organic electroluminesence display, OELD) or organic light emitting display, research is applied in flat-panel screens field widely.Compare with traditional liquid crystal display (liquid crystal display, LCD), because it has self luminous characteristic, thereby there is higher brightness and do not need back light system (backlight system).In addition, organic light emitting display also has the good characteristics such as frivolous, low power consumption, visible angle be larger.

Usually, the organic illuminating element of organic light emitting display comprise anode, negative electrode and be folded in anode and negative electrode between organic luminous layer.Fig. 1 is the cross-sectional schematic of existing transparent organic light emitting display.Organic light emitting display 100 in Fig. 1 is the tops that upper illuminated organic illuminating element 110 are arranged on to thin-film transistor 120.Organic illuminating element 110 comprise anode 112, negative electrode 114 and be folded in anode 112 and negative electrode 114 between organic luminous layer 116.In order to reach higher light transmittance, negative electrode 114 is general adopts thinner silver layer to make, but, thinner silver layer but makes microcavity (micro-cavity) effect of organic illuminating element 110 weaken, thereby cause luminosity and the usefulness of organic illuminating element 110, and then affect the performance of organic light emitting display 100.

Summary of the invention

The object of the invention is to, a kind of organic light emitting display is provided, it has high penetration and high luminous intensity simultaneously.

Another object of the present invention is to, a kind of manufacture method of organic light emitting display is provided, the organic light emitting display that the method is made has high penetration and high luminous intensity simultaneously.

The invention provides a kind of organic light emitting display, comprise first substrate, active driving element, organic illuminating element and protective clear layer.First substrate has zone of opacity and transparent region.Active driving element is arranged on first substrate and is positioned at zone of opacity.Organic illuminating element is arranged at active driving element top.Organic illuminating element comprises the anode layer, organic luminescence function layer, the first cathode layer and the second cathode layer that are successively set on active driving element top.Anode layer and active driving element are electrically connected, and organic luminescence function layer is connected with anode layer and the first cathode layer.The first cathode layer is positioned at zone of opacity and transparent region, and the second cathode layer is only positioned at zone of opacity.Protective clear layer be arranged between active driving element and organic illuminating element and the first cathode layer and the second cathode layer between.

In a specific embodiments of the present invention, above-mentioned the first cathode layer and the second cathode layer are silver layer.

In a specific embodiments of the present invention, the gross thickness of above-mentioned the first cathode layer and the second cathode layer is for being less than 22nm.

In a specific embodiments of the present invention, the thickness of above-mentioned the first cathode layer is less than 22nm, and the gross thickness of the first cathode layer and the second cathode layer equals 22nm.

In a specific embodiments of the present invention, above-mentioned protective clear layer comprises the first transparent insulating layer being arranged between active driving element and organic illuminating element, and is arranged at the second transparent insulating layer between the first cathode layer and the second cathode layer.

In a specific embodiments of the present invention, above-mentioned organic light emitting display also comprises second substrate, and second substrate is transparency carrier, and is oppositely arranged with first substrate, and active driving element and organic illuminating element are between second substrate and first substrate.

The present invention also provides a kind of manufacture method of organic light emitting display, and it comprises the following steps.First, provide first substrate, it has zone of opacity and transparent region.Then, on first substrate, form the active driving element that is positioned at zone of opacity.Afterwards, above active driving element, form organic illuminating element.Be included in and on active driving element, form successively anode layer, organic luminescence function layer, the first cathode layer and the second cathode layer forming organic illuminating element above active driving element, and anode layer and active driving element are electrically connected, organic luminescence function layer is connected with anode layer and the first cathode layer, the first cathode layer is positioned at zone of opacity and transparent region, and the second cathode layer is only positioned at zone of opacity.Then, between active driving element and organic illuminating element and between this first cathode layer and the second cathode layer, forming protective clear layer.

In a specific embodiments of the present invention, above-mentioned the first cathode layer is to form by evaporation, the second cathode layer recycles fine metal mask after by first evaporation and carries out patterning, to form the second cathode layer of the top that is positioned at the first cathode layer, and the thickness of the first cathode layer is less than 22nm, the gross thickness of the first cathode layer and the second cathode layer equals 22nm.

In a specific embodiments of the present invention, above-mentioned the first cathode layer is to form by evaporation, the second cathode layer recycles fine metal mask after by first evaporation and carries out patterning, to form the second cathode layer of the top that is positioned at the first cathode layer, and the gross thickness of the first cathode layer and the second cathode layer is less than 22nm.

In a specific embodiments of the present invention, form above-mentioned protective clear layer and comprise, be included on first substrate and form the first transparent insulating layer, cover active driving element, and anode layer is formed on the first transparent insulating layer; And on anode layer, form the second transparent insulating layer, cover anode layer and the first transparent insulating layer, and organic luminescence function layer is formed in the second transparent insulating layer.

Beneficial effect of the present invention is, the cathode layer of the organic light emitting display in the present invention comprises the first cathode layer and the second cathode layer, the second cathode layer can suitably increase the thickness of cathode layer, make the microcavity effect of organic illuminating element can reach best, thereby can effectively guarantee the luminosity of organic illuminating element, and then realize high penetration and the high luminous intensity of organic light emitting display simultaneously.

Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.

Accompanying drawing explanation

Fig. 1 is the generalized section of existing organic light emitting display.

Fig. 2 is the generalized section of the organic light emitting display of preferred embodiment of the present invention.

Fig. 3 is the luminous intensity of organic illuminating element and the graph of relation of cathode layer thickness of the organic light emitting display of preferred embodiment of the present invention.

Embodiment

Technological means and effect of taking for reaching predetermined goal of the invention for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment of the present invention, structure, feature and effect thereof, be described in detail as follows.

Fig. 2 is the partial cutaway schematic of the organic light emitting display of preferred embodiment of the present invention.Please refer to Fig. 2, in the present embodiment, organic light emitting display 200 is transparent active organic luminuous display.Particularly, organic light emitting display 200 comprises and is oppositely arranged first substrate 210 and second substrate 220, and is arranged at active driving element 230, organic illuminating element 240 and protective clear layer 250 between first substrate 210 and second substrate 220.

First substrate 210 is that transparent material is made, for example, can comprise glass, quartz or transparent polymer material.First substrate 210 comprises zone of opacity 212 and transparent region 214.Active driving element 230 is arranged on first substrate 210 and is positioned at zone of opacity 212.Active driving element 212 is for example thin-film transistor (TFT).Be understandable that, the active driving element 230 of organic light emitting display 200 is to be array to arrange, and only shows one for convenience of explanation in Fig. 2.

Hold above-mentionedly, organic illuminating element 240 is arranged at the top of active driving element 230 and is positioned at zone of opacity 212.In other words, active driving element 230 and anode 242 itself are lighttight, after being therefore arranged on first substrate 210, have formed zone of opacity 212.Organic illuminating element 240 comprises the anode layer 242, organic luminescence function layer 244, the first cathode layer 246 and the second cathode layer 248 that are set in turn on active driving element 230.In the present embodiment, organic illuminating element 240 is top luminous organic element, and anode layer 242 is opaque reflection electrode layer; The first cathode layer 246 and the second cathode layer 248 are transparent electrode layer.

Wherein, the first cathode layer 246 is thinner transparent conductive material layers, and for example the first cathode layer 246 is less than the silver layer of 22nm for thickness, and the first cathode layer 246 extends to outside organic illuminating element 240 and active driving element 230.That is to say, the first cathode layer 246 is positioned at zone of opacity 212 and transparent region 214.The second cathode layer 248 is arranged on the first cathode layer 246 and is only positioned at zone of opacity 212.The second cathode layer 248 is thinner transparent conductive material layers, and for example the second cathode layer 248 is thin silver layer.The gross thickness of the first cathode layer 246 and the second cathode layer 248 is less than 22nm.Fig. 3 is the luminous intensity of organic illuminating element and the graph of relation of cathode layer thickness of organic light emitting display of the present invention.As shown in Figure 3, along with the increase of cathode layer thickness (gross thickness of the first cathode layer 246 and the second cathode layer 248), the resonant cavity effect of organic illuminating element 240 improves, organic illuminating element 240 luminance raisings, and in the time that cathode layer thickness is 22nm, reach relatively preferably usefulness.Therefore,, in the present embodiment, the gross thickness of the first cathode layer 246 and the second cathode layer 246 is to be for example 22nm.

In addition, in the present embodiment, between organic illuminating element 240 and active driving element 230, be also provided with the first transparent insulating layer 252, the first transparent insulating layers 252 and be provided with through hole (not mark), anode layer 242 sees through these through holes and can realize and being electrically connected with active driving element 230.The first transparent insulating layer 252 is positioned at zone of opacity 212 and transparent region 214.In addition, in the present embodiment, between the anode layer 242 of organic illuminating element 240 and cathode layer 244, be also provided with the second transparent insulating layer 254, in the second transparent insulating layer 254, be provided with opening (not mark), organic luminescence function layer 244 is arranged in the opening of the second transparent insulating layer 254, and is connected with the first cathode layer 246 with anode layer 242 respectively through opening.The second transparent insulating layer 254 is positioned at zone of opacity 212 and transparent region 214.Therefore, the first transparent insulating layer 252 and the second transparent insulating layer 254 form protective clear layer 250.Protective clear layer 250 is positioned at zone of opacity 212 and transparent region 214.

In addition, in the present embodiment, second substrate 220 is arranged at organic illuminating element 240 tops, and has certain gap 265 between the first cathode layer 246 by sealing frame 260 and organic illuminating element 240 and the second cathode layer 248.Second substrate 220 is transparency carriers, for example glass substrate.

The manufacture method of the organic light emitting display 200 of the present embodiment is as follows:

First, on first substrate 210, form active driving element 230.The making of for example thin-film transistor of active driving element 230 is to know technology, will not describe in detail at this.

Secondly, on first substrate 210, form the first transparent insulating layer 252, and cover active driving element 230.Because active driving element 230 itself is lighttight, after being therefore arranged on first substrate 210, zone of opacity 212 and corresponding transparent region 214 are formed.

Afterwards, form organic illuminating element 240.Forming organic illuminating element 240 is on the first transparent insulating layer 252 of zone of opacity 212, to form successively anode layer 242, organic luminescence function layer 244, the first cathode layer 246 and the second cathode layer 248.

Particularly, first on the first transparent insulating layer 252 of zone of opacity 212, form anode layer 242, on anode layer 242 and the first transparent insulating layer 252, form the second transparent insulating layer 254 again, make the second transparent insulating layer 254 be positioned at zone of opacity 212 and transparent region 214, and form the organic luminescence function layer 244 being connected with anode layer 242 in the second transparent insulating layer 254.About deposition and the etching of each rete are technology known in the art, will not describe in detail at this.Then the first cathode layer 246, being connected with organic luminescence function layer 244 with formation on organic luminescence function layer 244 at the second transparent insulating layer 254.The first cathode layer 246 is for example the transparent conductive material (for example thickness is less than the silver layer of 22nm) of whole property evaporation layer above the second transparent insulating layer 254 and organic luminescence function layer 244.Therefore, the first cathode layer 246 extends to outside active driving element 230, is positioned at zone of opacity 212 and transparent region 214.Afterwards, above the first cathode layer 246 of zone of opacity 212, form the second cathode layer 248.The formation of the second cathode layer 248 is for example the transparent conductive material of elder generation's whole property evaporation layer on the first cathode layer 246, and utilize for example fine metal mask (fine metal mask, FMM) utilize etch process to carry out patterning, thereby form the second cathode layer 248 that is positioned at the first electrode layer 246 tops that is only positioned at zone of opacity 212.In the present embodiment, the gross thickness of the first cathode layer 246 and the second cathode layer 246 is for example for equaling 22nm, under this thickness, it is best that the microcavity effect of organic illuminating element 240 can reach, thereby guarantee the luminosity of organic illuminating element 240, also made organic light emitting display 200 there is high penetration simultaneously.

Then, then above organic element 240, cover second substrate 220, and there is certain gap 265 between the first cathode layer 246 by sealing frame 260 and organic illuminating element 240 and the second cathode layer 248, thereby form organic light emitting display 200.

The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (10)

1. an organic light emitting display, is characterized in that, it comprises:
First substrate, has zone of opacity and transparent region;
Active driving element, is arranged on this first substrate and is positioned at this zone of opacity;
Organic illuminating element, be arranged at this active driving element top, this organic illuminating element comprises the anode layer, organic luminescence function layer, the first cathode layer and the second cathode layer that are successively set on this active driving element top, this anode layer and this active driving element are electrically connected, this organic luminescence function layer is connected with this anode layer and this first cathode layer, this first cathode layer is positioned at this zone of opacity and this transparent region, and this second cathode layer is only positioned at this zone of opacity; And
Protective clear layer, be arranged between this active driving element and this organic illuminating element and this first cathode layer and this second cathode layer between.
2. organic light emitting display as claimed in claim 1, is characterized in that: this first cathode layer and this second cathode layer are silver layer.
3. organic light emitting display as claimed in claim 1, is characterized in that, the gross thickness of this first cathode layer and this second cathode layer is for being less than 22nm.
4. organic light emitting display as claimed in claim 1, is characterized in that, the thickness of this first cathode layer is less than 22nm, and the gross thickness of this first cathode layer and this second cathode layer equals 22nm.
5. organic light emitting display as claimed in claim 1; it is characterized in that; this protective clear layer comprises the first transparent insulating layer being arranged between this active driving element and this organic illuminating element, and is arranged at the second transparent insulating layer between this first cathode layer and this second cathode layer.
6. organic light emitting display as claimed in claim 1, it is characterized in that, this organic light emitting display also comprises second substrate, this second substrate is transparency carrier, and be oppositely arranged with this first substrate, this active driving element and this organic illuminating element are between this second substrate and this first substrate.
7. a manufacture method for organic light emitting display, is characterized in that, it comprises:
First substrate is provided, and it has zone of opacity and transparent region;
On this first substrate, form active driving element, be positioned at this zone of opacity;
Above this active driving element, form organic illuminating element, be included in and on this active driving element, form successively anode layer, organic luminescence function layer, the first cathode layer and the second cathode layer, and this anode layer and this active driving element are electrically connected, this organic luminescence function layer is connected with this anode layer and this first cathode layer, this first cathode layer is positioned at this zone of opacity and this transparent region, and this second cathode layer is only positioned at this zone of opacity; And
Between this active driving element and this organic illuminating element and between this first cathode layer and this second cathode layer, forming protective clear layer.
8. manufacture method as claimed in claim 7, it is characterized in that, this first cathode layer is to form by evaporation, and this second cathode layer recycles fine metal mask after by first evaporation and carries out patterning, to form this second cathode layer of the top that is positioned at this first cathode layer, the thickness of this first cathode layer is less than 22nm, and the gross thickness of this first cathode layer and this second cathode layer equals 22nm.
9. manufacture method as claimed in claim 7, it is characterized in that, this first cathode layer is to form by evaporation, this second cathode layer recycles fine metal mask after by first evaporation and carries out patterning, to form this second cathode layer of the top that is positioned at this first cathode layer, the gross thickness of this first cathode layer and this second cathode layer is less than 22nm.
10. manufacture method as claimed in claim 7, is characterized in that, forms this protective clear layer and comprises:
On this first substrate, form the first transparent insulating layer, cover this active driving element, this anode layer is formed on this first transparent insulating layer; And
On this anode layer, form the second transparent insulating layer, cover this anode layer and this first transparent insulating layer, this organic luminescence function layer is formed in this second transparent insulating layer.
CN201210411203.0A 2012-10-25 2012-10-25 Organic light emitting display and manufacture method thereof CN103779377A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104485350A (en) * 2014-12-26 2015-04-01 北京维信诺科技有限公司 Organic light-emitting display device and manufacturing method thereof
CN105097877A (en) * 2015-07-06 2015-11-25 上海和辉光电有限公司 Transparent display device and manufacturing method thereof
CN105789263A (en) * 2016-05-03 2016-07-20 上海天马微电子有限公司 Organic light-emitting displayer and preparation method thereof
WO2018113018A1 (en) * 2016-12-22 2018-06-28 武汉华星光电技术有限公司 Oled display panel and manufacturing method therefor
CN109148365A (en) * 2018-09-06 2019-01-04 京东方科技集团股份有限公司 A kind of production method of display panel, display panel and display device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104485350A (en) * 2014-12-26 2015-04-01 北京维信诺科技有限公司 Organic light-emitting display device and manufacturing method thereof
CN104485350B (en) * 2014-12-26 2018-08-10 北京维信诺科技有限公司 A kind of organic light-emitting display device and preparation method thereof
CN105097877A (en) * 2015-07-06 2015-11-25 上海和辉光电有限公司 Transparent display device and manufacturing method thereof
CN105789263A (en) * 2016-05-03 2016-07-20 上海天马微电子有限公司 Organic light-emitting displayer and preparation method thereof
CN105789263B (en) * 2016-05-03 2019-02-19 上海天马微电子有限公司 Organic light emitting display and preparation method
WO2018113018A1 (en) * 2016-12-22 2018-06-28 武汉华星光电技术有限公司 Oled display panel and manufacturing method therefor
CN109148365A (en) * 2018-09-06 2019-01-04 京东方科技集团股份有限公司 A kind of production method of display panel, display panel and display device
CN109148365B (en) * 2018-09-06 2020-08-25 京东方科技集团股份有限公司 Display panel manufacturing method, display panel and display device

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Application publication date: 20140507

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