CN100438066C - Two-side display apparatus - Google Patents

Two-side display apparatus Download PDF

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Publication number
CN100438066C
CN100438066C CNB2005100229399A CN200510022939A CN100438066C CN 100438066 C CN100438066 C CN 100438066C CN B2005100229399 A CNB2005100229399 A CN B2005100229399A CN 200510022939 A CN200510022939 A CN 200510022939A CN 100438066 C CN100438066 C CN 100438066C
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China
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light
emitting component
double
display device
side display
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CNB2005100229399A
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CN1805149A (en
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邱圳毅
胡闵杰
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AU Optronics Corp
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AU Optronics Corp
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Abstract

The present invention relates to a double-side display device which comprises a basal plate, a first luminous element, a second luminous element and an upper cover, wherein the two luminous elements are both arranged on the basal plate, the first luminous element has a first light emitting direction, and the second luminous element is adjacent to the first luminous element and has a second light emitting direction; the upper cover is positioned above the first luminous element and the second luminous element, and is separated from the luminous elements with a distance of 1 to 100 micrometers.

Description

Double-side display device
Technical field
The present invention relates to a kind of double-side display device, particularly relate to a kind of two-sided organic electroluminescence display device of avoiding light-emitting component to suffer the external force infringement.
Background technology
The form of electronic product is variation gradually, and double-sided display function becomes the main characteristic of new generation electronic product.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 a display panels and an organic electroluminescence panel be to pasting, or two organic electroluminescence panels are to subsides.
Fig. 1 is existing double-side display device.Existing double-side display device 10 is fitted by one first display floater 11 and one second display floater 12 and is formed.First display floater 11 has a transparency carrier 111, one first electrode 112, a luminescent layer 113, one second electrode 114 and a 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 a transparency carrier 121, a third electrode 122, a luminescent layer 123, one the 4th electrode 124 and a 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, existing 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, and does not meet light, thin, short, the little trend of electronic product.In order to reduce thickness, certainly will dwindle the spacing of cap and transparency carrier, but thus, cap is crooked because of external force pressure easily, or the particle that is produced in the compressing panel technology and the element on the transparency carrier is damaged.
In addition, two display floaters 11 and 12 get via the different process manufacturing respectively, so its complicate fabrication process and time-consuming.And two display floaters 11 and 12 must drive respectively, can't save materials and parts such as chip, flexible circuit board, increased cost.
Thicker and the complex process of existing double-side display device, its arts demand uses more integrated circuit (IC), flexible circuit board materials and parts such as (FPC).The particulate that is produced in technology weighs the element on the transparency carrier easily wounded.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, have thinner thickness, and be suitable for the technology of simplification; On structural design, the particle that can avoid in the technology being produced weighs the light-emitting component on the substrate wounded.
Double-side display device of the present invention comprises a substrate, one first light-emitting component, one second light-emitting component and a loam cake.Two kinds of light-emitting components all are arranged on the substrate, and wherein first light-emitting component has one first light emission direction, and second light-emitting component is adjacent to this first light-emitting component, and have one second light emission direction.Loam cake is positioned at first light-emitting component and second light-emitting component top, and and those light-emitting components between keep 1 to 100 micron spacing.
Spacing between loam cake and those light-emitting components adjusts according to issuable particle size in the general technology.In a preferred embodiment, first light-emitting component may be for upwards luminous, and second light-emitting component two light-emitting components between has a wall then for luminous downwards.One supporting layer is provided in loam cake and non-making progress between the luminous zone such as this wall or second light-emitting component, and therefore can avoid loam cake to suffer oppression and be out of shape, and then element on the damaged substrate.
Description of drawings
Fig. 1 is existing double-side display device;
Fig. 2 is first embodiment of double-side display device of the present invention;
Fig. 3 A according to a second embodiment of the present invention, first kind of planar configuration of light-emitting component;
Fig. 3 B according to a second embodiment of the present invention, second kind of planar configuration of light-emitting component;
Fig. 4 is second embodiment of double-side display device of the present invention; And
Fig. 5 is the 3rd embodiment of double-side display device of the present invention.
The simple symbol explanation
10 double-side display devices (having now), 221 light tight electrodes
11 first display floaters, 222 organic luminous layers
111 transparency carriers, 223 euphotic electrodes
112 first electrodes, 23 downward light-emitting components
113 luminescent layers, 231 euphotic electrodes
114 second electrodes, 232 organic luminous layers
115 caps, 233 light tight electrodes
12 second display floaters, 24 loam cakes
121 transparency carriers, 25 driving elements
122 third electrode 25a driving elements
123 luminescent layer 25b driving elements
124 the 4th electrodes, 26 stickers
125 caps, 30 double-side display devices
20 double-side display devices, 31 walls
21 substrates, 32 supporting layers
22 light-emitting component 40 double-side display devices upwards
42 flat boards
Embodiment
Now cooperate icon that double-side display device of the present invention is described in detail in detail, and enumerate preferred embodiment and be described as follows:
Please refer to Fig. 2, be the first embodiment of the present invention.Double-side display device 20 comprises a substrate 21, two kind of light-emitting component 22 and 23 in order to luminous towards different directions, and a loam cake 24.Below in the explanation, substrate 21 all is not limited to organic material or inorganic material with loam cake 24, chats bright in advance.
As shown in the figure, light-emitting component 22 and 23 is adjacent one another are, and is arranged on the same substrate 21.Substrate 21 can be selected from glass or plastic material substrate.In the present embodiment, light-emitting component 22 is for upwards luminous, and light-emitting component 23 is luminous so that the positive and negative of display unit 20 all can be in order to show image downwards.Loam cake 24 is positioned at those light-emitting components 22 and 23 tops are not injured by external force to protect it, and should select the hard material of light transmittance more than 30%, for example glass, duroplasts etc.Bind with a sticker 26 between loam cake 24 and the substrate 21.What must emphasize is that loam cake 24 weighs those light-emitting components 22 and 23 wounded with the particle that light-emitting component 22 and 23 keeps 1 to 100 micron spacing H to be produced to avoid in the technology.
Upwards light-emitting component 22 can be a top luminescent organic LED, and a light tight electrode 221 is made on the substrate 21, forms an organic luminous layer 222 again on light tight electrode 221, and forms an euphotic electrode 223 on organic luminous layer 222.Light-emitting component 23 can be a bottom-emission type Organic Light Emitting Diode downwards, and its structure also comprises an euphotic electrode 231, an organic luminous layer 232 and a light tight electrode 233.Different with top luminescent organic LED is, is formed at that the person is euphotic electrode on the substrate 21.
Above-mentioned conduct make progress light-emitting component 22 or downwards the Organic Light Emitting Diode of light-emitting component 23 can adopt a macromolecule Organic Light Emitting Diode (PLED) or a micromolecule Organic Light Emitting Diode.Light tight electrode 221 and 233 can be a reflecting electrode or a black electrode, and its material can be selected from metal, semiconductor and metal oxide or conducting polymer etc.Euphotic electrode 223 and 231 is made with indium oxide WU and indium zinc oxide usually.Organic luminous layer 222 and 232 material can be fluorescence or phosphorus optical activity and the great compound of photism.
Euphotic electrode and light tight electrode all are not limited to as male or female, are the zone of hole or electron transport between electrode and the luminescent layer.In the hole-transfer zone, an alternative hole injection layer (not icon) or the hole transmission layer (not icon) of inserting.In the electron transport zone, an alternative electronics hole implanted layer (not icon) or the electron transfer layer (not icon) 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-1-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.
Please refer to Fig. 3 A, according to the first embodiment of the present invention, first kind of planar configuration of light-emitting component.A plurality of upwards light-emitting components 22 are interconnected on substrate 21 with a chess checkerboard type with a plurality of downward light-emitting components 23, can certainly be disposed on the substrate 21 by bar row shape.Upwards light-emitting component 22 can be electrically connected to same driving element 25 to show the positive and negative of identical picture in display unit 20 with downward light-emitting component 23.
Please refer to Fig. 3 B, according to the first embodiment of the present invention, second kind of planar configuration of light-emitting component.Upwards light-emitting component 22 is electrically connected to driving element 25a, and light-emitting component 23 is electrically connected to driving element 25b downwards, independently to be controlled in the positive and negative of display unit 20 as image.Above-mentioned driving element 25,25a and 25b can be selected from the thin-film transistor of various types.Subsidiary one carries, and the planar configuration shown in Fig. 3 A-3B also can be applicable to following each embodiment.
Please refer to Fig. 4, be the second embodiment of the present invention.The present invention is at the non-upwards luminous zone growth supporting layer of this double-side display device, with isolated substrate and glass back of the body lid, avoids carrying on the back and covers the element that weighs wounded on the substrate.In the double-side display device 30, upwards has a wall 31 between light-emitting component 22 and the downward light-emitting component 23.One supporting layer 32 is grown up in wall 31 tops to prevent that loam cake 24 from sinking because of being subjected to external force pressure.In order to keep effective spacing of loam cake 32 and light-emitting component 22 and 23, supporting layer 32 should have 1 to 100 micron height at least, but is not limited to use organic material or inorganic material to make supporting layer 32.
In above-mentioned two embodiment, loam cake 24 all has the body of an inboard to fovea superior, and loam cake 24 sidewall lower edges utilize sticker 26 and substrate 21 involutions again.Yet loam cake 24 can also replace third embodiment of the invention for example shown in Figure 5 by a flat board.
Please refer to Fig. 5, double-side display device 40 is covered in light-emitting component 22 and 23 tops with dull and stereotyped 42, and the spacing of dull and stereotyped 42 lower surfaces and light-emitting component 22 and 23 is kept by the thickness of sticker 26, can utilize the composition, volume of packaging plastic and determines.The support strength of sticker 26 may be not enough, therefore can adopt as shown in Figure 4 supporting layer 32 to come in addition reinforcement.
Above embodiment all explains with active display, but feature of the present invention also can be applicable in the passive type display.When the present invention and prior art compare mutually, have more and get row characteristic and advantage ready:
1. can save integrated circuit (IC) or flexible circuit board materials and parts such as (FPC) to reduce cost.
2. greater than 30% the back of the body lid light-emitting component involution is entered the panel luminous zone to block aqueous vapor with the visible light penetrance.
3. at the non-upwards luminous zone growth supporting layer of double-side display device,, avoid carrying on the back lid and weigh element on the substrate wounded with isolated substrate and back of the body lid.
Above-listed detailed description specifies at the preferred embodiment of the present invention, and only the foregoing description is not in order to limiting claim of the present invention, does not allly break away from the equivalence that spirit of the present invention does and implements or change, all should be contained in the claim of the present invention.

Claims (19)

1. double-side display device comprises:
Substrate;
First light-emitting component is arranged on this substrate, and has first light emission direction;
Second light-emitting component is arranged on this substrate, and adjacent to this first light-emitting component, this second light-emitting component has second light emission direction; And
Loam cake is positioned at this first light-emitting component and this second light-emitting component top, and and these light-emitting components between keep 1 to 100 micron spacing;
Wherein, also comprise wall between this first light-emitting component and this second light-emitting component.
2. double-side display device as claimed in claim 1 comprises the staggered or bar row shape configuration with the chess checkerboard type of a plurality of these first light-emitting components and a plurality of this second light-emitting component.
3. double-side display device as claimed in claim 1, wherein this first light-emitting component comprises:
Light tight electrode is formed on this substrate;
Organic luminous layer is formed on this light tight electrode; And
Euphotic electrode is formed on this organic luminous layer.
4. double-side display device as claimed in claim 1, wherein this second light-emitting component comprises:
Euphotic electrode is formed on this substrate;
Organic luminous layer is formed on this euphotic electrode; And
Light tight electrode is formed on this organic luminous layer.
5. double-side display device as claimed in claim 1, wherein this first light-emitting component is the macromolecule Organic Light Emitting Diode.
6. double-side display device as claimed in claim 1, wherein this second light-emitting component is the macromolecule Organic Light Emitting Diode.
7. double-side display device as claimed in claim 1, wherein the material of this loam cake is the material of light transmittance more than 30%.
8. double-side display device as claimed in claim 1, the wherein edge of this loam cake and this base plate bonding.
9. double-side display device as claimed in claim 1, wherein this first light-emitting component and this second light-emitting component are connected to same driving element.
10. double-side display device as claimed in claim 1, wherein this first light-emitting component and this second light-emitting component are connected to the different driving element.
11. a double-side display device comprises:
Substrate;
First light-emitting component is arranged on this substrate, and this first light-emitting component is for upwards luminous;
Second light-emitting component is arranged on this substrate, and adjacent to this first light-emitting component, this second light-emitting component is for luminous downwards;
Loam cake is positioned at this first light-emitting component and this second light-emitting component top; And
Supporting layer is supported between this loam cake and these light-emitting components so that this loam cake and these light-emitting components keep spacing;
Wherein also comprise wall between this first light-emitting component and this second light-emitting component, this supporting layer is formed on this wall.
12. double-side display device as claimed in claim 11, wherein this supporting layer has 1 to 100 micron height.
13. double-side display device as claimed in claim 11 comprises the staggered or strip columnwise configuration with the chess checkerboard type of a plurality of these first light-emitting components and a plurality of this second light-emitting component.
14. double-side display device as claimed in claim 11, wherein this first light-emitting component comprises:
Light tight electrode is formed on this substrate;
Organic luminous layer is formed on this light tight electrode; And
Euphotic electrode is formed on this organic luminous layer.
15. double-side display device as claimed in claim 11, wherein this second light-emitting component comprises:
Euphotic electrode is formed on this substrate;
Organic luminous layer is formed on this euphotic electrode; And
Light tight electrode is formed on this organic luminous layer.
16. double-side display device as claimed in claim 11, wherein this first light-emitting component is the macromolecule Organic Light Emitting Diode.
17. double-side display device as claimed in claim 11, wherein this second light-emitting component is the macromolecule Organic Light Emitting Diode.
18. double-side display device as claimed in claim 11, wherein the material of this loam cake is the material of light transmittance more than 30%.
19. double-side display device as claimed in claim 11, the wherein edge of this loam cake and this base plate bonding.
CNB2005100229399A 2005-12-22 2005-12-22 Two-side display apparatus Active CN100438066C (en)

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CN100438066C true CN100438066C (en) 2008-11-26

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Families Citing this family (7)

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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
CN106783913B (en) * 2016-11-17 2019-12-27 武汉华星光电技术有限公司 AMOLED double-sided display
CN107104132B (en) * 2017-06-14 2020-04-10 武汉华星光电半导体显示技术有限公司 Double-sided display device and preparation method thereof
US10403702B2 (en) 2017-06-14 2019-09-03 Wuhan China Star Optoelectronics Technology Co., Ltd. Double-sided display device, manufacturing method thereof, and electronic apparatus
TWI641169B (en) 2017-07-26 2018-11-11 友達光電股份有限公司 Dual-side display and method for fabricating the same
CN108110032A (en) * 2017-12-12 2018-06-01 深圳市华星光电技术有限公司 Double-sided OLED display and preparation method thereof
CN109585507B (en) * 2018-11-26 2021-05-28 武汉华星光电半导体显示技术有限公司 Display device and method for manufacturing the same

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CN1582072A (en) * 2003-08-13 2005-02-16 胜华科技股份有限公司 Organic luminous dual-display element
JP2005061845A (en) * 2003-08-12 2005-03-10 Tic Citizen Co Ltd Internal lighting system for double-face type time piece
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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
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JP2005061845A (en) * 2003-08-12 2005-03-10 Tic Citizen Co Ltd Internal lighting system for double-face type time piece
CN1582072A (en) * 2003-08-13 2005-02-16 胜华科技股份有限公司 Organic luminous dual-display element
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