TWI223784B - Dual display device - Google Patents

Abstract

A dual display device includes a first display panel, a second display panel and glue. In this invention, the first display panel comprises, in sequence, a first transparent substrate, a first electrode, a first organic functional layer and a second electrode. The second display panel comprises, in sequence, a second transparent substrate, a third electrode, a second organic functional layer, and a fourth electrode. The second electrode and the fourth electrode are in opposite directions. The glue seals the first transparent substrate and the second transparent substrate.

Description

1223784

In particular, it refers to a double-sided display-a case number 9ΐηπ V. Description of the invention (1) (1) Device, [Technical Field to which the Invention belongs] The present invention relates to a display device (2), [Prior art] in recent years In the future, as electronic devices become lighter, the area display is becoming increasingly important. In addition, the main feature of the 平 子 in ′ makes flat display ::: display equipment * is the main yoke of the new generation of electronic products. With mobile phones as an example, the double-sided display device can be used as both the main panel and the secondary panel. The double-sided display device of Zitao Chain-1f is made of two single-sided display panels (such as a liquid crystal panel or an organic electroluminescent panel), as shown in Figure 丨. The first display panel 31 includes a first display panel 31 and a second display panel 8. The first display panel 31 has a transparent substrate 311, a stem-electrical element, a light-emitting area 313, a second electrode 314, and a cover plate. 々1 5 'The light-emitting area 3 1 3 is located between the first electrode 3 1 2 and the second electrode 31 4. The first electrode 312 is formed on the transparent substrate 311, and the cover plate 315 is attached to the transparent substrate by an adhesive. On the substrate 311, the second display panel 32 also has a transparent substrate 321, a third electrode 322, a light-emitting area 323, a fourth electrode 324, and a cover plate 325. The light-emitting area 323 is located between the third electrode 322 and Between the fourth electrodes 324, the third electrode 322 is formed on the transparent substrate 3 2 1, and the cover plate 3 2 5 is attached to the transparent substrate 3 2 1 by an adhesive. Here, the cover plate 315 of the first display panel 31 is opposite to the cover plate 3 2 5 of the second display panel 32 to form a double-sided display device 3. However, in the current double-sided display device 3, there are two covers 31 5. Case number $ jjl〇65 5. Description of the invention (2) 325 and two transparent substrates 3η and 321 are large, thick, and heavy Also, the volume of Yuan Zhizheng is more specialized, shorter and smaller. The electronic device is light and light. "As a result of this, the item of the hybrid hairy man was originally invented by a double-sided display, with a spirit of π Γ ϋ, a kind of invention." ,! The completion of the research and completion of the nine-point inspection and the completion of the purpose of the invention is to provide the display panel of the above purpose-a light, thin, short, small double-sided display pole, the first organic display panel, the second transparent sequence contains a And a fourth electrode transparent substrate and a second, according to the present invention, a second display surface sequentially includes a first energy layer, a second electrical substrate, a third electrical double-sided display device, and a clad plate And an adhesive. Its transparent substrate is first electrically and transparently polarized; the first electrode, the electrode system contains a first water unit. The first display panel, a first electrode, an encapsulation layer, and a first transparent system are located opposite to the organic display panel of the above-mentioned purpose. The second electrode of the water removal unit and the fourth bright substrate are made of adhesive. Sealing 'According to the present invention, a second display panel display panel is based on a first organic function and a fourth electrode containing a second transparent group, and the first substrate and the second transparent two display panel are based on a second organic function layer. Opposite each other; a first surface display device, a clad plate, an adhesive, and a sort order including a first transparent base second electrode; the second electrode substrate is a transparent substrate and a second transparent third electrode, a first and a fourth The electrodes are sealed with adhesive; between the substrates. 1223784 Macro No. 92121065 V. Description of the invention (3) Compared with the known technology of display device, not only the production cost of the whole device. Base capture Qi ij, diameter and diffusion can also avoid sealing, and the compression space between water removal. In addition, the high device enables the display device to be lifted, and the overall device is light and has a long characteristic. For the use of stickiness, the thickness of the device is not only increased, but it also adds time for pressing materials or distance. The display is thin and short-lived. It is not necessary to make the thin and heavy glue seals in the actual glue seal. It does not need to be thin and heavy. The invention adds external water to promote the damage of free radical capture. It can be installed in the unit and the capacity of the operation panel. To sum up, Xiaozhiming and the more commercialized, the two organic light-emitting display panels with double sides of the present invention. Compared with any cover plate (saving two cover plates), the weight is lighter, which can reduce the service life and stability of the diffusion device of the whole device's adhesive doped with water-removing material or free gas and oxygen in the adhesive. , Organic light-emitting element (organic functional layer). The trap can control the transparent substrate and the cover plate to provide a capacity for the water removal unit to remove the water and gas inside the device, and it can also improve the reliability. In addition, the double-sided display of the present invention can independently display image information, and it can be mentioned that the overall production cost of the double-sided display device of the present invention is also low, and the stability is good, and the information division application is extremely suitable. (IV) [Embodiment] A double-sided display device according to a preferred embodiment of the present invention will be described below with reference to related drawings. First Embodiment As shown in FIG. 2A, a double-sided display device 1 according to a first embodiment of the present invention includes a first display panel 11, a second display panel 12, and an adhesive 13. Wherein, the first display panel η sequentially includes a first transparent group

Page 7 1223784 __Case No. 92121065_ Year, Month, and Day Amendment_ V. Description of the Invention (4) Plate 111, a first electrode 112, a first organic functional layer 113, and a second electrode 11 4; a second display panel The 12 series includes a second transparent substrate 121, a third electrode 122, a second organic functional layer 123, and a fourth electrode 1 2 4 in this order. The second electrode 11 4 and the fourth electrode 1 2 4 are opposite to each other. The first transparent substrate 111 and the second transparent substrate 1 2 1 are sealed with an adhesive 13. In this embodiment, the first transparent substrate 111 may be a flexible substrate or a rigid substrate. In addition, the first transparent substrate 111 may be a plastic substrate or a glass substrate. Among them, the flexible substrate and the plastic substrate may be a polycarbonate (PC) substrate, a polyester (PET) substrate, a cyclic olefin copolymer (C0C) substrate, or a metal chrome substrate, a cycloolefin. Copolymer (metal 10-based cyclic olefin copolymer, mCOC) substrate. In this embodiment, the first electrode 112 is formed on the first transparent substrate 111 by a sputtering method or an ion plating method. Here, the first electrode 112 is usually used as an anode and its material is usually a transparent conductive metal oxide, such as indium tin oxide (IT0), aluminum oxide (AZ0), or indium zinc oxide (IZ〇). 'The first organic functional layer 113 generally includes a hole injection layer, a hole transfer layer, a hole confinement layer, a light emitting layer, an electron transfer layer, and an electron injection layer (not shown in the figure). Among them, the first organic functional layer 113 is formed by using evaporation, spin coating, ink jet print, or printing.

1223784

_ Case number 92121065 V. Description of the invention (5) The light emitted by the organic functional layer 11 3 may be blue light, green light, red light, white light, other monochromatic light or a combination of monochromatic light. Referring to FIG. 2A again, the second electrode 114 is located on the first organic functional layer 11 3. Here, the second electrode 114 is formed on the first organic functional layer 113 by a method such as evaporation or sputtering. In addition, the material system of the second electrode 114 may be selected from, but not limited to, aluminum (Al), calcium (Ca), magnesium (Mg), indium (In), tin (Sn), manganese (Mn), and silver ( Ag), gold (Au), and magnesium-containing alloys (such as magnesium silver (Mg: Ag) alloy, magnesium indium (Mg: in) alloy, magnesium tin (Mg: Sn) alloy, antimony (Mg: Sb) alloy and Zhenshi Emperor (Mg: Te) alloy) and so on. In addition, in this embodiment, the functions and features of the second transparent substrate 1 2 1, the third electrode 122, the second organic functional layer 123, and the fourth electrode 124 are the same as those of the first transparent substrate 111 and the first electrode 1 1 2 The first organic functional layer 113 and the second electrode 114 are the same, and are not repeated here. Please refer to FIG. 2A again. The adhesive glue 13 of this embodiment is doped with a plurality of water-removing substances or / and radical scavengers 131, and the first transparent substrate 1 11 and the second transparent substrate 1 2 1 are adhered. Glue 1 3 seal. Here, the adhesives 1 and 3 are light-curing adhesives (such as UV curing adhesives). Of course, the adhesive 1 3 can also be a thermosetting adhesive. In addition, in this embodiment, the water-removing substance or / and the radical scavenger may be barium oxide (BaO) or the like. In this embodiment, the adhesive 13 is doped with a water-removing substance or / and a radical scavenger 1 3 1 to increase the diffusion path and diffusion time of moisture and oxygen in the adhesive 13 in the external environment. Can improve the life and stability of the overall components. In addition, the water-removing substance in the adhesive 13 or / and free

1223784

___ Case No. 921210R5 5. Description of the invention (6) The base capture agent 1 31 can also control the pressing distance between the first transparent substrate 111 and the second transparent substrate 1 2 1, in addition to avoiding damage to the organic light emitting element during sealing ^ (The first electrode 112, the first organic functional layer 113, the second electrode, the third electrode 122, the second organic functional layer 123, and the fourth electrode 124) may form an accommodation space. / In addition, as shown in FIG. 2A and FIG. 2B, the double-sided display device 1 of this embodiment further includes a water removal unit 14, which is located between the first transparent substrate ^^ and the second transparent substrate 121 (that is, Set in the accommodation space). Here, the / water removal unit 14 can be directly installed on the second electrode u 4 or / and the fourth electrode display 124 #, as shown in FIG. 3. Of course, a buffer layer (not shown) may be provided between the water removal unit 14 and the second electrode 114 or between the water removal unit 14 and the fourth electrode 124, such as an ultraviolet light adhesive or a thermosetting adhesive. In addition, the water removal unit H may also cover the first display panel u or / and the second display panel 12 in the form of a tape, as shown in FIG. 4. Since the first organic functional layer 113 and the second organic functional layer 123 (organic light-emitting element) are very sensitive to moisture and oxygen, it is easy to produce dark spots after contact with the atmosphere. Therefore, the water removal unit 14 is used to avoid the first An organic functional layer 113 and a second organic functional layer 123 are affected by moisture and oxygen. Here, the water removal unit 14 may contain a desiccant (for example, barium oxide, BaO), which is used to remove water and gas from the double-sided display device after sealing to increase the service life of the element. Furthermore, 'this implementation For example, the double-sided display device 1 further includes-· "S · X \ dt driver circuit (not shown in the figure) 'This driving circuit may be a passive driving circuit and an active driving circuit. Panel ⑽ second display panel 12 and power supply (not shown) are connected.

IIH 1223784 Case No. 92121065 V. Description of the invention (7) In addition, in this embodiment, the boards 12 and 2 are driven independently, and the requirements are different. Here, the panel (sub ~ display panel is used together to increase the user and the second display panel 12 can be relied on, etc. Of course, the first display driver. In addition, the talent group of this embodiment (not shown in the figure) ), The image data displayed on the image display of the second display panel 12 is viewed from the user, and the image data is in accordance with the direction of the image display at that time, that is, the position. 1 The following will use a mobile phone as the system of Figure 5 and Figure 5B. As shown in FIG. 2A; as shown in FIG. 5A, when the panel 11 displays the incoming call in another aspect, as shown in FIG. 5B, the panel 12 displays the toilet time and so on. When cooking, ^ panel 11 is the same Information, also second! Panel 12

Second, the first display panel 丨 丨 and the second display surface 'Wang :: Known plus the voltage according to the actual needs of the first display panel 12 series can be used as a secondary display surface to make it with the first display panel 1 1 • 7 Sex. Here, the first—display panel 11 and “do n’t display movies, images, or digital panel 11 and the second display panel 12 can also be displayed on both sides together. Only the set 1 also includes an image conversion 1.” The first display panel 11 and the third direction are tied. That is, when the second display panel 12 and the first display panel 11 are transmitted, the 3-image conversion module will adjust the condition of the-display panel 11: A specific embodiment of the second display panel 12 for converting image data to a forward user, please refer to FIG. 5A and FIG. 5B, which is a set of schematic diagrams of the specific embodiment. Phone number and other related information; when the user closes the mobile phone, the second display of a different display panel 11 information, such as when a display panel 12 can also display the first display, that is, the first display panel 11 The image information is transmitted. At this time, the image conversion module will first detect the current 1223784-case number 92121 __year-five, the use of invention description (8), and then the second display panel according to the measured signal 1 2 image information is converted to forward users The orientation of the eyes. Please refer to FIG. 6 for an example. The double-sided display device 2 according to the second embodiment of the present invention includes a first display panel 21, a second display panel 2 2, an adhesive 23, and A water removal unit 24. The first display panel 21 includes a first transparent substrate 2u, a first electrode 212, a first organic functional layer 213, and a second electrode 214 in sequence; a second display panel 22 The system includes a second transparent substrate 221, a third electrode 222, a second organic functional layer 223, and a fourth electrode 224 in this order. The second electrode 214 and the fourth electrode 224 are opposite to each other. The first transparent substrate 211 and The second transparent substrate mi is sealed with an adhesive 23; the water removal unit 24 is located between the first transparent substrate 21J and the second transparent substrate 2 2 1. The first display of the water and the same display system can be shown separately with In the present embodiment, the 'adhesive 23 is doped with a plurality of water-removing substances or / based capturing agents 2 3 1. The first display panel 21, the first transparent substrate 21i, and the electrode 212' in the present embodiment ―Organic functional layer 213, second electrode 214, second panel ^, second transparent substrate 221 The functions and features of the third electrode m, the second organic layer 223, the fourth electrode 224, an adhesive glue 23, the solid object 231, and the substrate 24 are produced by Ang, μ, I, +, and White. The same component phases in the first embodiment will not be repeated here. The double-sided display of this embodiment is shown in the figure) and a driving circuit 2 ^ further includes an image conversion module (not the one in the first embodiment). Identical element road = shown in the figure), the double-sided display of these components of the present invention is the same, and it will not be repeated here.-^^ Adhesive glue is used to seal two organic hairs.

Page 12 丄 223784 Amendment No. 92121065 V. Description of the invention (9) Light display, display panel. Compared with the conventional technology, the present invention does not need to use any cover plate, that is, saves two cover plates. Not only is the entire device thinner and lighter, but also the production cost of the entire device is lower. In addition, the adhesive glue of the present invention is doped with a water substance or / and a free radical scavenger, which not only increases the diffusion path and diffusion time of the external water vapor and oxygen :: adhesive 1 glue, thereby improving the stability of the second device of the device. In addition, the pressing distance between the organic light emitting element transparent substrate and the second transparent substrate can be prevented from being damaged during sealing, and an accommodating space for setting a water removal unit is provided. And if U is enough to remove the water and gas inside the device, it can also improve the reliability of operation early. X, the double of the present invention; = = The panel can independently display image information, which can improve the display and better stability, and has a long life span for information segmentation, which is extremely suitable for applications. The 2 'for the actual product is described above as an example, rather than the spirit and scope of the present invention, and 2 = sex. Any departure shall be included in the scope of the attached patent application. Special modifications or changes, both

Page 13 1223784 _Case No. 92121065_ Year Month Revision _ Brief Description of Drawings (5), [Simplified Illustration of Drawings] Figure 1 is a schematic diagram of a conventional double-sided display device; Figure 2A is the first of the present invention FIG. 2B is a schematic cross-sectional view taken along the dotted line AA in FIG. 2A; FIG. 3 is another schematic view of the double-sided display device according to the first embodiment of the present invention;

FIG. 4 is another schematic diagram of the double-sided display device according to the first embodiment of the present invention, FIG. 5A and FIG. 5B are schematic diagrams of the specific implementation of FIG. 2A; and FIG. 6 is the double-sided display of the second embodiment of the present invention An illustration of a display device

Illustration. Description of component symbols: 1 double-sided display device 11 first display panel 111 first transparent substrate 112 first electrode 113 first-organic functional layer 114 first,-electrode 12 second display panel 121 second transparent substrate 122 first electrode 123 Second organic functional layer 124 Fourth electrode

Page 14 1223784 Case No. 92121065_Year Month and Day Correction Drawings Simple Description 13 Adhesive 131 White base capture agent 14 Water removal unit 2 Double-sided display device 21 First display panel 211 First transparent substrate 212 First electrode 213 An organic functional layer 214 a second electrode 22 a second display panel 221 a second transparent substrate 222 a second electrode 223 a second organic functional layer 224 a fourth electrode 23 an adhesive 231 a base capturing agent 24 a water removing unit 3 a double-sided display device 31 The first display panel 311 the transparent substrate 312 the first electrode 313 the light emitting area 314 the second electrode 315 the cover plate 32 the second display panel

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1223784 Case No. 92121065 Modified in brief illustration 321 Transparent substrate 322 Third electrode 323 Light-emitting area 324 Fourth electrode 32 5 Cover

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Claims (1)

1223784 _Case No. 92121065_Year Month and Date__ VI. Scope of Patent Application 1. A double-sided display device includes: a first display panel, which sequentially includes a first transparent substrate, a first electrode, and a first An organic functional layer and a second electrode; a second display panel comprising a second transparent substrate, a third electrode, a second organic functional layer and a fourth electrode in sequence, and the second electrode and the first electrode The four electrode systems are opposed to each other; and an adhesive, the first transparent substrate and the second transparent substrate are sealed with an adhesive. 2. The double-sided display device according to item 1 of the scope of patent application, wherein the first transparent substrate and the second transparent substrate are selected from at least one of a rigid substrate, a flexible substrate, a glass substrate, and a plastic substrate. 3. The double-sided display device according to item 1 of the scope of patent application, wherein the material of the first electrode and the third electrode is a conductive metal oxide. 4. The double-sided display device according to item 3 of the scope of patent application, wherein the material of the conductive metal oxide is at least one selected from the group consisting of indium tin oxide, aluminum oxide, and indium zinc oxide. 5. The double-sided display device according to item 1 of the scope of patent application, wherein the material of the second electrode and the fourth electrode is selected from the group consisting of aluminum, calcium, magnesium, indium, tin, manganese, silver, gold, and alloys containing towns. At least one of them. Page 17 1223784 Case No. 92121065 Fengyue Yue Amendment VI. Patent Application Scope 6. The double-sided display device described in Item 5 of the Patent Application Scope, wherein the magnesium-containing alloy includes but is not limited to magnesium silver (Mg: Ag) Alloy, magnesium indium (Mg: In) alloy, magnesium tin (Mg: Sn) alloy, magnesium antimony (Mg: Sb) alloy, and magnesium tellurium (Mg: Te) alloy. 7. The double-sided display device according to item 1 of the scope of patent application, wherein the adhesive is a light-solid adhesive. 8. The double-sided display device described in item 1 of the scope of patent application, wherein the adhesive is a thermosetting adhesive. 9. The double-sided display device according to item 1 of the scope of patent application, wherein the adhesive is doped with a water-removing substance. 10. The double-sided display device according to item 1 of the scope of patent application, wherein the adhesive is doped with a radical scavenger. 11. The double-sided display device described in item 1 of the scope of patent application, further comprising-a water removal list 丨 ', which is located between the first bright substrate and the second transparent substrate 0: single display among which Page No. 18 1223784 _ Case No. 92121065 _ Year Month Date__ VI. Patent Application Range 1 3. The double-sided display device described in item 11 of the patent application range, wherein the water removal unit is covered on the first display panel On or / and on the second display panel. 14. The double-sided display device described in item 1 of the patent application scope further includes an image conversion module, which is used to control the image display orientation of the first display panel or the second display panel. 15. A double-sided display device comprising: A first display panel includes a first transparent substrate, a first electrode, a first organic functional layer, and a second electrode in order; a second display panel includes a second transparent substrate in order. A third electrode, a second organic functional layer and a fourth electrode, and the second electrode and the fourth electrode system are opposed to each other; an adhesive, the first transparent substrate and the second transparent substrate are sealed with an adhesive, And a water removal unit, which is located between the first transparent substrate and the second transparent substrate 16. The double-sided display device according to item 15 of the scope of patent application, wherein the first transparent substrate and the second transparent substrate are selected from at least one of a rigid substrate, a flexible substrate, a glass substrate, and a plastic substrate. 17. The double-sided display device according to item 15 of the scope of patent application, wherein the material of the first electrode and the third electrode is a conductive metal oxide. Page 19 1223784 _Case No. 9212_ VI. Scope of Patent Application Month Amendment 18. The double-sided display device according to item 17 of the scope of patent application, wherein the material of the conductive metal oxide is at least one selected from the group consisting of indium tin oxide, aluminum zinc oxide, and indium zinc oxide. 19. The double-sided display device according to item 15 of the scope of patent application, wherein the material of the second electrode and the fourth electrode is selected from the group consisting of aluminum, calcium, magnesium, indium, tin, manganese, silver, gold, and magnesium. Alloy of at least one of them. 20. The double-sided display device described in item 19 of the scope of the patent application, wherein the magnesium-containing alloy includes, but is not limited to, a town silver (Mg: Ag) alloy, a town indium (Mg: In) alloy, and magnesium tin ( Mg: Sη) alloy, magnesium antimony (Mg: Sb) alloy, and magnesium tellurium (Mg: Te) alloy. 2 1. The double-sided display device according to item 5 of the patent application scope, wherein the adhesive is a light-curing adhesive. 2j. The double-sided display device according to item 15 of the scope of patent application, wherein the adhesive is a thermosetting adhesive. j _ The double-sided display device described in item 15 of the scope of patent application, wherein the adhesive glue is doped with a water-removing substance. The double-sided display device described in the 15th patent application range, wherein Page 20 1223784 _ Case No. 92121065 _ Years and months Amendment _ 6. Scope of patent application The glue is doped with a free radical scavenger. 25. The double-sided display device according to item 15 of the scope of patent application, wherein the water removal unit is located between the second electrode and the fourth electrode. 26. The double-sided display device according to item 15 of the scope of patent application, wherein the water removal unit is covered on the first display panel or / and the second display panel. 27. The double-sided display device described in item 15 of the patent application scope further includes an image conversion module, which is used to control the image display orientation of the first display panel or the second display panel. Page 21