CN100442948C

CN100442948C - Organic luminous display capable of double-sided display

Info

Publication number: CN100442948C
Application number: CNB2005100529001A
Authority: CN
Inventors: 郭建忠
Original assignee: Wintek Corp
Current assignee: Wintek Corp
Priority date: 2005-03-02
Filing date: 2005-03-02
Publication date: 2008-12-10
Anticipated expiration: 2025-03-02
Also published as: CN1829400A

Abstract

The present invention relates to an organic luminous display capable of displaying by double surfaces, which comprises a basal plate, wherein both sides of the basal plate are respectively provided with a first electrode, an organic layer and a second electrode, wherein the first electrode is arranged on the basal plate, the organic layer is arranged on the first electrode, and the second electrode is arranged on the organic layer. When a first electrode and a second electrode arranged at the same side of the basal plate are used for conducting electricity, the adjacent organic layer can emit light.

Description

Organic luminous display capable of double-sided display

Technical field

The present invention is relevant with organic light emitting display, is meant a kind of organic luminous display capable of double-sided display especially.

Background technology

Because organic light emitting display (Organic Light Emitting Displa, it is preferable that OLED has self-luminous characteristic, visibility and brightness, and luminous efficiency makes organic light emitting display be widely used in consumption electronic products such as mobile phone, digital still camera, game machine than advantages such as height; Along with the Presentation Function of electronic product shows towards the double-sided display progress from single face, how to allow organic light emitting display also can double-sided display also become the target and the challenge of engineering design.

It is described that for example China announces No. 556135 patent of invention case, mainly be that opaque negative electrode with traditional organic display changes with transparent cathode and replaces, and the outer surface at transparent cathode and transparency carrier forms two staggered mutually viewing areas respectively, allows each luminescent layer after being driven transmit light source from each viewing area respectively; And as Fig. 4 and shown in Figure 5 in the patent of the present invention, then exposing two organic displays in addition is according to staggered mode, or back-to-back mode arranged side by side mutually combines, so that organic light emitting display reaches the purpose of double-sided display type, but, the overall volume of aforementioned display device structure is bigger, can't be applied to the less electronic product of volume, also can't allow simultaneously the two-sided independent displaying separately of display.

It is described that TaiWan, China is announced No. 586096 patent of invention case for another example, characteristics are two organic light emitting display to be integrated encapsulation form, the metal electrode of each organic light emitting display all covers a dark insulating barrier, the insulating barrier that utilizes an organic light emitting display encapsulates combination mutually back to the arrangement mode of the insulating barrier of another organic light emitting display, each organic light emitting display can be shown separately, but the volume after the above-mentioned two displays combination is also bigger, relatively also makes weight heavier.

In sum, present known various organic luminous display capable of double-sided display structures, the volume that all has display is big, thickness is thicker, weight is heavier, or the shortcoming of two-sided independent displaying separately, makes to run into more restriction and difficulty when being applied to electronic product.

Summary of the invention

Therefore, main purpose of the present invention is to be to provide a kind of organic luminous display capable of double-sided display, and its volume is less, weight is lighter, conveniently is applied to the various products that need Presentation Function.

Take off purpose for before reaching, organic luminous display capable of double-sided display provided by the present invention, include a substrate, these substrate two sides have one first electrode, an organic layer respectively, and one second electrode, this first electrode is to be located at this substrate, and this organic layer is to be located at this first electrode, and this second electrode is to be located at this organic layer; When first electrode that is positioned at this substrate homonymy and second electrodes conduct, can make this adjacent organic layer luminous, by this, organic light emitting display of the present invention can reach and have double-sided display function, and volume is less, weight is lighter, conveniently is applied to the various purposes that need the product of Presentation Function.

Below, cooperate diagram to enumerate some preferred embodiments now, in order to structure of the present invention and effect are elaborated, wherein used illustrated brief description is as follows:

Description of drawings

Fig. 1 is the schematic diagram of the present invention's first preferred embodiment;

Fig. 2 is the application schematic diagram of the present invention's first preferred embodiment, represents that mainly organic light emitting display is located at the state of double-side in the mobile phone;

Fig. 3 is the Another Application schematic diagram of the present invention's first preferred embodiment, represents that mainly organic light emitting display and liquid crystal film display module be located at the state in the mobile phone jointly;

Fig. 4 is the schematic diagram of the present invention's second preferred embodiment, and main display light separator is located at first electrode of substrate top side and the state between the substrate;

Fig. 5 is the schematic diagram of the present invention's the 3rd preferred embodiment, and main display light separator is located at first electrode of substrate bottom side and the state between the substrate;

Fig. 6 is the schematic diagram of the present invention's the 4th preferred embodiment, and main display light separator is the state between each first electrode and substrate;

Fig. 7 is the schematic diagram of the present invention's the 5th preferred embodiment, and main display light separator is at first electrode of substrate top side and the state between the organic layer;

Fig. 8 is the schematic diagram of the present invention's the 6th preferred embodiment, and main display light separator is at first electrode of substrate bottom side and the state between the organic layer; And

Fig. 9 is the schematic diagram of the present invention's the 7th preferred embodiment, and main display light separator is the state between each first electrode and each organic layer.

Embodiment

See also shown in Figure 1ly, provided organic luminous display capable of double-sided display 10, include a substrate 12, two first electrodes 20, two organic layers 22 by the present invention's first preferred embodiment, and 2 second electrodes 24; Wherein: this substrate 12 is to make for transparent materials, and substrate 12 has two sides 14 that are divided into top and bottom.

Respectively this first electrode 20 is for being transparence and having indium tin oxide (ITO) film of conductive characteristic, and each first electrode 20 is that the position covers each side 14 in opaque substrate 12 accordingly respectively, and is connected with anode.

Respectively this organic layer 22 can include electric hole implanted layer (Hole Injedtion Layer), electric hole transport layer (Hole Transport Layer, luminescent layer (Emitting Layer), or electron transfer layer (Electron Transport Layer etc., each organic layer 22 is to cover in each first electrode, 20 non-side of being located at substrate 12.

Respectively this second electrode 24 is for being the transparent conductive film of transparence, and each second electrode 24 is to cover in each organic layer 22 non-sides of being located at each first electrode 20, and is connected with negative electrode; The side 14 of each substrate 12 also is provided with a packaging part 25, and packaging part 25 is to be coated on first electrode 20, organic layer 22 and second electrode 24; If adopt passivation protection encapsulation (Passivation) then can reduce the thickness of integral display again.

Via said structure, when electric hole, electronics are imported by first electrode 20 and second electrode 24 of each side 14 respectively, conduct to via first electrode 20 and second electrode 24 that organic layer 22 between the two causes electronics, mutually combining of electric hole again and give off energy with the form of light, the light source that each organic layer 22 is produced can upper and lower two directions towards substrate 12 be projected to the external world from each second electrode 24 that be transparence respectively.

Because each first,

second electrode

20,24 and organic layer 22 are only to be located at single substrate 12 2 sides, the thickness of integral display is thinner than display of the prior art, volume also dwindles relatively, simultaneously each organic layer 22 can be independently of one another can the phase mutual interference by each adjacent first,

second electrode

20,24 driven for emitting lights; As shown in Figure 2, organic light emitting display 10 is to be applied to a foldable type mobile phone 26, and the thickness of mobile phone and volume all can be dwindled, and the elasticity in product design is bigger.

And for example shown in Figure 3, also organic light emitting display 10 collocation one liquid crystal film display modules 27 of the present invention can be formed a double-side display device 28, when double-side display device 28 is located at mobile phone 29, display 10 sends wherein that the light source of a direction can be as the backlight of liquid crystal film display module 27, make first display screen of liquid crystal film display module 27 as mobile phone 29, the light source of display 10 other direction that sends is then as second display screen of mobile phone 29.

By this, organic light emitting display provided by the present invention can reach that volume is less, weight is lighter, and purpose that can two-sided independent displaying separately, conveniently is applied to the various products that need Presentation Function.

In addition, in the structure of aforementioned display device, substrate also can change with transparent material to be made, and makes at least one first electrode be opaque shape, and the light source that can avoid two organic layers to be sent respectively equally produces the situation of phase mutual interference; Or, on substrate, set up at least one optical confinement layer, also can more effectively prevent the light source phase mutual interference that two organic layers are sent respectively; As shown in Figure 4, it is the organic light emitting display 30 that is provided for the present invention's second preferred embodiment, include a substrate 31 equally, 2 first electrodes 32, two organic layers 33, and 2 second electrode 34, characteristics are to be: being provided with an optical confinement layer 35, the first electrodes 32 and optical confinement layer 35 between first electrode 32 of substrate 31 top sides and the substrate 31 can be in order to block light source that organic layer 33 the sent light source that the organic layer 33 that is positioned at substrate 31 bottom sides produced that can not be interfered to jointly; And as shown in Figure 5, be the organic light emitting display 40 that is provided for the present invention's the 3rd preferred embodiment, characteristics are that optical confinement layer 41 is between first electrode 43 and substrate 42 of substrate 42 bottom sides; Or as shown in Figure 6, be the organic light emitting display 50 that is provided for the present invention's the 4th preferred embodiment, characteristics then are all to be provided with optical confinement layer 53 between each first electrode 51 and the substrate 52.

Again as shown in Figure 7, it is the organic light emitting display 60 that is provided for the present invention's the 5th preferred embodiment, its primary structure and second preferred embodiment are roughly the same, include a substrate 61,2 first electrodes 62, two organic layers 63,2 second electrodes 64, an and optical confinement layer 65, and characteristics are that optical confinement layer 65 is between first electrode 62 and organic layer 63 of substrate 61 top sides, and as shown in Figure 8, be the organic light emitting display 70 that is provided for the present invention's the 6th preferred embodiment, its optical confinement layer 71 is to be located between first electrode 73 and organic layer 74 of substrate 72 bottom sides; As shown in Figure 9, it is the organic light emitting display 80 that is provided for the present invention's the 7th preferred embodiment, then all be provided with optical confinement layer 83 between each the-electrode 81 and each organic layer 82, by this, the various embodiments described above equally all can utilize optical confinement layer to reach the purpose that blocks light source.

In the structure of above-mentioned organic light emitting display, can change into inverse type (ReverseType OLED) structure according to need, the type of drive of display also can utilize active (AMOLED) or passive type (PMOLED) to drive; And substrate also can change with soft materials to be made; Or substrate, first electrode are all made with opaque material, equally all can reach goal of the invention of the present invention.

Claims

1. an organic light emitting display is characterized in that, includes:

A substrate, this substrate is opaque shape;

Two first electrodes, these two first electrodes are located at corresponding two sides of this substrate respectively;

Two organic layers, these two organic layers are located at the side that two first electrodes differ from this substrate respectively; And

Two second electrodes, these two second electrodes are transparence, and are located at respectively respectively that this organic layer differs from a respectively side of this first electrode.

2. according to the described organic light emitting display of claim 1, it is characterized in that described this substrate is provided with a packaging part in addition, this packaging part coats these two first electrodes, these two organic layers, and these two second electrode peripheries, and the power connection end of these two first electrodes is exposed to this packaging part.

3. an organic light emitting display is characterized in that, includes:

A substrate, this substrate is transparence;

Two first electrodes, these two first electrodes are located at corresponding two sides of this substrate;

Two organic layers, these two organic layers are located at the side that these two first electrodes differ from this substrate respectively;

At least one optical confinement layer, this optical confinement layer is opaque shape, and between relative this first electrode and this substrate of this optical confinement layer located therein;

4. according to the described organic light emitting display of claim 3, it is characterized in that, described this substrate is provided with a packaging part in addition, this packaging part coats these two first electrodes, this optical confinement layer, these two organic layers, and these two second electrode peripheries, and the power connection end of these two first electrodes is exposed to this packaging part.

5. an organic light emitting display is characterized in that, includes:

A substrate;

Two first electrodes, these two first electrodes are located at the corresponding two side faces of this substrate respectively;

Two organic layers, these two organic layers are located at the side that these two first electrodes differ from this substrate respectively; And

At least one optical confinement layer, this optical confinement layer is opaque shape, and between relative this first electrode and this organic layer of this optical confinement layer located therein;

6. according to the described organic light emitting display of claim 5, it is characterized in that, described this substrate is provided with a packaging part in addition, this packaging part coats these two first electrodes, this optical confinement layer, these two organic layers, and these two second electrode peripheries, and the power connection end of these two first electrodes is exposed to this packaging part.

7. an organic light emitting display is characterized in that, includes:

A substrate, this substrate is transparence;

Two first electrodes, at least one this first electrode is opaque shape, and these two first electrodes are located at the corresponding two side faces of this substrate respectively;