CN1805634A - Two-side display apparatus - Google Patents
Two-side display apparatus Download PDFInfo
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- CN1805634A CN1805634A CN 200510022932 CN200510022932A CN1805634A CN 1805634 A CN1805634 A CN 1805634A CN 200510022932 CN200510022932 CN 200510022932 CN 200510022932 A CN200510022932 A CN 200510022932A CN 1805634 A CN1805634 A CN 1805634A
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- light emitting
- emitting diode
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Abstract
The invention relates to a dual-surface display device, which comprises the first basic plate whose upper surface has the first organic lighting diode; the second basic plate above the first organic lighting diode whose lower surface has the second organic lighting diode; and a stress baffle layer filling the space between the first and second basic plates to seal the first organic lighting diode on the first basic plate and sealing the second organic lighting diode on the second basic plate.
Description
Technical field
The present invention is about a kind of double-side display device, particularly about a kind of two-side organic electroluminescence display with stress buffer structure.
Background technology
The form of electronic product is variation gradually, and double-sided display function becomes the main characteristic of electronic product of new generation.For example, the double-side display device of mobile phone inside can simultaneously show mobile phone function of tonic chord window, and another side shows the time.At present the double-side display device produced of industry is generally two single face display floaters subsides is formed, and for example to pasting, or two organic electroluminescence panels are to subsides to subsides, liquid crystal panel and organic electroluminescence panel for two liquid crystal panels.
Fig. 1 is known double-side display device.Known double-side display device 10 is fitted by first display floater 11 and second display floater 12 and is formed.First display floater 11 has transparency carrier 111, first electrode 112, luminescent layer 113, second electrode 114 and cap 115.First electrode 112 is formed on the transparency carrier 111.Luminescent layer 113 is between first electrode 112 and second electrode 114.The edge of cap 115 and transparency carrier 111 are fitted, and are covered on second electrode 114.
Second display floater 12 also has transparency carrier 121, third electrode 122, luminescent layer 123, the 4th electrode 124 and cap 125.Third electrode 122 is formed on the transparency carrier 121.Luminescent layer 123 is between third electrode 122 and the 4th electrode 124.The edge of cap 125 and transparency carrier 121 are fitted, and are covered on the 4th electrode 124.The cap 115 of first display floater 11 and 125 pairs of subsides of the cap of second display floater 12 are to form double-side display device 10.
As mentioned above, known double-side display device 10 has two caps 115 and 125 and two transparency carriers 111 and 121.Therefore, the volume of whole device is big, thickness is thicker, and weight is also heavier, in being applied in, during large-sized display, causes curved substrate because of external force pressure or gravity effect easily, causes luminescent layer or electrode to peel off.The invention provides a kind of double-side display device and solve above-mentioned shortcoming.
Summary of the invention
The object of the present invention is to provide a kind of double-side display device, fill stress-buffering material and prevent peeling off of Organic Light Emitting Diode or rupture the function of have waterproof simultaneously, preventing the oxygen intrusion.
The present invention's double-side display device comprises first substrate, and its upper surface is provided with first Organic Light Emitting Diode; Second substrate, its lower surface is provided with second Organic Light Emitting Diode, and is positioned at first Organic Light Emitting Diode top.Stress-buffer layer fills up the gap of first substrate and second substrate, and involution first Organic Light Emitting Diode is in first substrate, and involution second Organic Light Emitting Diode is in second substrate.
That stress-buffer layer uses is solid-state, the anti-stress material of liquid state or colloidal state.Structurally, stress-buffer layer fills up the gap of upper and lower base plate, Organic Light Emitting Diode that therefore can the fixing base surface.If the material behavior of stress-buffer layer itself can absorb water, inhaling of oxygen, or can waterproof, anti-oxygen, or add waterproof, anti-oxygen material in stress-buffer layer, all can intensified waterproof, the function of anti-oxygen intrusion.
Description of drawings
Fig. 1 is known double-side display device;
Fig. 2 is first embodiment of double-side display device of the present invention; And
Fig. 3 is second embodiment of double-side display device of the present invention.
[primary clustering symbol description]
10 double-side display devices (known), 20 double-side display devices
11 first display floaters, 21 infrabasal plates
111 transparency carriers, 22 Organic Light Emitting Diodes
112 first electrodes, 221 reflecting electrodes
113 luminescent layers, 222 luminescent layers, 114 second electrodes
223 transparency electrodes, 115 caps
23 upper substrates, 12 second display floaters
24 OLEDs
121 transparency carriers, 241 reflecting electrodes
122 third electrodes, 242 luminescent layers
123 luminescent layers, 243 transparency electrodes
124 the 4th electrodes, 25 stress-buffer layers
125 caps, 26 stickers
30 flat-panel display devices, 32 protective layers
Embodiment
Now conjunction with figs. describes double-side display device of the present invention in detail, and enumerates preferred embodiment and be described as follows:
Please refer to Fig. 2, it is the first embodiment of the present invention.Double-side display device 20 comprises infrabasal plate 21 and upper substrate 23, and the two binds with sticker 26.Infrabasal plate 21 upper surfaces are provided with Organic Light Emitting Diode 22.Upper substrate 23 lower surfaces are provided with another Organic Light Emitting Diode 24.Between upper substrate 23 and infrabasal plate 21, provide stress-buffer layer 25 filling up the gap of this two substrate 21 and 23, and in order to involution Organic Light Emitting Diode 22 in infrabasal plate 21, and involution Organic Light Emitting Diode 24 is in upper substrate 23.
Stress-buffer layer 25 can be solid-state, liquid state or colloidal state, and Organic Light Emitting Diode that can the fixing base surface, and prevent that two plate bases 21 and 23 are subjected to external force and bend (bending) causes each structure sheafs of Organic Light Emitting Diode 22 and 24 to peel off or ruptures.The material behaviors of stress-buffer layer 25 itself be if can absorb water, inhaling of oxygen, or can waterproof, anti-oxygen, or add absorbent material or oxygen-absorbing material in stress-buffer layer, all can effectively prevent steam or oxygen invasion Organic Light Emitting Diode 22 and 24.
Please refer to Fig. 3, it is the second embodiment of the present invention.The part that double-side display device 30 is identical with first embodiment comprises infrabasal plate 21, Organic Light Emitting Diode 22, upper substrate 23, Organic Light Emitting Diode 24 and stress-buffer layer 25.Yet double-side display device 30 comprises that also protective layer 32 is attached to Organic Light Emitting Diode 22 and 24 surfaces with the usefulness as protective layer, and strengthens the ability that prevents steam or oxygen invasion Organic Light Emitting Diode 22 and 24.
In above-mentioned two embodiment, Organic Light Emitting Diode 22 has transparency electrode 223, luminescent layer 222 and reflecting electrode 221.Transparency electrode 223 is formed on the substrate 21, so Organic Light Emitting Diode 22 is towards substrate 21 directions emission light.Similarly, Organic Light Emitting Diode 24 has reflecting electrode 241, luminescent layer 242 and transparency electrode 243.Reflecting electrode 241 is formed on the substrate 23, so Organic Light Emitting Diode 24 is towards substrate 23 directions emission light.Reflecting electrode 221 and 241 can be metal electrode.By way of parenthesis, in order to improve anti-reflection effect and to avoid two-sided light leak interference phenomenon when showing simultaneously, reflecting electrode 221 and 241 can dark color or the black insulating barrier cover, or replace, or add antireflection material or light absorbent with black electrode.
It between electrode and the luminescent layer zone of hole or electron transport.In the hole-transfer zone, alternative hole injection layer or the hole transmission layer of inserting.In the electron transport zone, alternative electron injecting layer or the electron transfer layer of inserting.
Electron transfer layer can adopt oxine aluminium (Alq), trimerization benzimidazole (TPBI), anthracene (anthracene) derivative, fluorene derivative (fluorine, material such as spirofluorine), more in addition n type alloy such as alkali doped halide, alkaline-earth halide, alkali metal oxide or metal carbonate compound to strengthen its electron mobility.
The material of electron injecting layer can be metallic compound, adopts with good alkali halide, alkaline-earth halide, alkali metal oxide or the metal carbonate compound of light tight electrode work function fitness or comprises the organic layer of said n type alloy.
Hole transport layer material can be NPB, and (N, N-di (naphthalene-l-yl)-N N-diphenyl-benzidene) wait the allyl amine compounds.
The hole injection layer material can be titanium cyanine compounds such as allylic amines or CuPc.
Further specify the manufacture method of double-side display device 30 of the present invention with second embodiment.At first, on infrabasal plate 21, form transparency electrode 223.Form organic layers such as hole injection layer, hole transmission layer, luminescent layer 222, electron transfer layer and electron injecting layer more in regular turn.Then, form reflecting electrode 221 on these organic layers to form complete Organic Light Emitting Diode 22.Again protective layer 32 is made on the reflecting electrode 221.For substrate 23, also make the Organic Light Emitting Diode 24 and the protective layer 32 of same structure thereon with same technology.
Subsequently, inject methods such as (ODF), provide stress-buffering material in substrate 21 or 23 surfaces with evaporation, the coating of ink jet type ground or the formula of dripping.Be coated with sticker 26 again on infrabasal plate 21 or upper substrate 23, wherein sticker 26 is around Organic Light Emitting Diode 22 and 24.At this moment, stress-buffering material can be filled in the zone that sticker 26 enclosed.At last, combination infrabasal plate 21 and upper substrate 23 make Organic Light Emitting Diode 22 with respect to Organic Light Emitting Diode 24, and make stress-buffering material be full of between two substrates 21 and 23 crack with this two Organic Light Emitting Diode 22 and 24 of involution.
Among above-mentioned all embodiment, transparency electrode can be tin indium oxide (ITO), indium zinc oxide transparent conductive material or thin metal layers such as (IZO), and transparency carrier can be selected from glass or plastic material substrate.Therefore structure of the present invention is not limited to be applied in passive type display or the active display, can merge with driven unit such as thin-film transistor and use.
When the present invention and known technology compare mutually, have more and get row characteristic and advantage ready:
1. preferable anti-external carbuncle structure.
2. easy technology.
3. preferable waterproof, anti-oxygen performance.
Above-listed detailed description specifies at the preferred embodiment of the present invention, and the foregoing description is not in order to limiting the scope of the invention, and the equivalence that all the present invention of disengaging carried out is implemented or changed, and all should be contained in the scope that the present invention asks for protection.
Claims (16)
1. double-side display device comprises:
First substrate;
First Organic Light Emitting Diode is arranged at this first upper surface of base plate;
Second substrate is positioned at this first Organic Light Emitting Diode top;
Second Organic Light Emitting Diode is arranged at this second base lower surface; And
Stress-buffer layer fills up the gap of this first substrate and this second substrate, and this first Organic Light Emitting Diode of involution is in this first substrate, and this second Organic Light Emitting Diode of involution is in this second substrate.
2. double-side display device as claimed in claim 1, wherein this stress-buffer layer also comprises absorbent material.
3. double-side display device as claimed in claim 1, wherein this stress-buffer layer also comprises the material that absorbs oxygen.
4. double-side display device as claimed in claim 1, wherein this stress-buffer layer is solid-state.
5. double-side display device as claimed in claim 1, wherein this stress-buffer layer is liquid.
6. double-side display device as claimed in claim 1, wherein this stress-buffer layer is a colloidal state.
7. double-side display device as claimed in claim 1 also comprises the protective layer that is attached to this first Organic Light Emitting Diode surface.
8. double-side display device as claimed in claim 1 also comprises the protective layer that is attached to this second Organic Light Emitting Diode surface.
9. double-side display device manufacture method comprises:
First substrate is provided;
Form first Organic Light Emitting Diode in this first substrate surface;
Second substrate is provided;
Form second Organic Light Emitting Diode in this second substrate surface;
Stress-buffering material this first substrate surface in this first Organic Light Emitting Diode place is provided; And
Make up this first substrate and this second substrate, make this first Organic Light Emitting Diode, and make this stress-buffering material be full of the gap of this two substrates and this two Organic Light Emitting Diode of involution with respect to this second Organic Light Emitting Diode.
10. method as claimed in claim 9, the wherein above-mentioned step of this stress-buffering material that provides is injected this stress-buffering material in this first substrate surface with the formula of dripping.
11. method as claimed in claim 9, the wherein above-mentioned step of this stress-buffering material that provides stamps this stress-buffering material in this first substrate surface in the wire mark mode.
12. method as claimed in claim 9, wherein above-mentioned the step of this stress-buffering material is provided is that this stress-buffering material of evaporation is in this first substrate surface.
13. method as claimed in claim 9, the wherein above-mentioned step that this stress-buffering material is provided are that ink jet type ground this stress-buffering material of coating is in this first substrate surface.
14. method as claimed in claim 9 also comprises:
The coating sticker is on this first substrate and this second substrate, and wherein this sticker is around this first Organic Light Emitting Diode and this second Organic Light Emitting Diode; And
Fill this stress-buffering material in the zone that this sticker enclosed.
15. method as claimed in claim 9 also comprises forming protective layer in this first Organic Light Emitting Diode surface.
16. method as claimed in claim 9 also comprises forming protective layer in this second Organic Light Emitting Diode surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100229327A CN100518422C (en) | 2005-12-22 | 2005-12-22 | Two-side display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100229327A CN100518422C (en) | 2005-12-22 | 2005-12-22 | Two-side display apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1805634A true CN1805634A (en) | 2006-07-19 |
| CN100518422C CN100518422C (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100229327A Active CN100518422C (en) | 2005-12-22 | 2005-12-22 | Two-side display apparatus |
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| Country | Link |
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| CN (1) | CN100518422C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183743A (en) * | 2013-05-21 | 2014-12-03 | 海洋王照明科技股份有限公司 | Double-surface display organic electroluminescent device and preparation method thereof |
| WO2016101399A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Double-sided oled display apparatus and manufacturing method therefor |
| CN110931652A (en) * | 2019-11-26 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | OLED double-sided display device |
-
2005
- 2005-12-22 CN CNB2005100229327A patent/CN100518422C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183743A (en) * | 2013-05-21 | 2014-12-03 | 海洋王照明科技股份有限公司 | Double-surface display organic electroluminescent device and preparation method thereof |
| WO2016101399A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Double-sided oled display apparatus and manufacturing method therefor |
| CN110931652A (en) * | 2019-11-26 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | OLED double-sided display device |
| US11380748B2 (en) | 2019-11-26 | 2022-07-05 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Organic light emitting diode dual screen display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100518422C (en) | 2009-07-22 |
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