CN2583920Y - Organic light emitting panels and organic light emitting components - Google Patents

Abstract

The utility model relates to an organic luminous panel, which comprises a substrate, a plurality of first electrodes, a plurality of insulating layers, a plurality of barrier layers, a plurality of organic luminous layers and a plurality of second electrodes, wherein the first electrodes are respectively formed on one surface of the substrate; these insulating layers are negative photoresistances, are formed on these first electrodes with these first electrodes crisscross each other respectively, and these barrier layers are negative photoresistances and are formed respectively on each insulating layer, and each organic luminescent layer is formed between the insulating layer respectively, and these second electrodes are formed on this organic luminescent layer respectively, and are located between the barrier layer, in addition, the utility model also provides an organic light-emitting component.

Description

Organic light emitting panels and organic light emitting components

technical field

The utility model relates to a light-emitting panel and a light-emitting component, in particular to an organic light-emitting panel and an organic light-emitting component.

Background technique

The information and communication industry has become the mainstream industry today, especially portable communication and display products are the focus of development. Since the flat panel display is a communication interface between people and information, its development is particularly important. The technologies currently used in flat panel displays include Plasma Display, Liquid Crystal Display, Inorganic Electroluminescence Display, Light Emitting Diode, and Vacuum Fluorescent Display. Fluorescence Display), field emission display (Field Emission Display) and electrochromic display (Electro-Chromic Display) and so on.

Compared with other flat-panel displays, organic light-emitting panels or organic light-emitting components have the advantages of self-illumination, no viewing angle, power saving, simple manufacturing process, low cost, wide operating temperature, high response speed and full color, etc. Great shallow power, so it is expected to become the mainstream of the next generation of flat panel displays.

Organic light-emitting panels or organic light-emitting components are components that use the self-luminous properties of organic functional materials to achieve display effects. They can be divided into small molecule organic light-emitting components (smallmolecule) according to the molecular weight of organic functional materials. OLED, SM-OLED) and polymer light-emitting device (polymer light-emitting device, PLED) two categories. The light-emitting structure is composed of a pair of electrodes and an organic functional material layer. When the current passes between the transparent anode and the metal cathode, electrons and holes are combined in the organic functional material layer to generate excitons, and the organic functional material layer can produce different colors of light according to the characteristics of its material. mechanism.

In the organic light-emitting panel manufacturing process, the existing organic light-emitting panel static matrix drive (PMOLED, Passive Matrix OLED) technology uses an insulating layer to separate the pixels of the organic light-emitting panel, and uses a barrier layer to separate the cathodes between pixels; the barrier layer is made of organic materials. And during the cathode evaporation, the cathode is separated into strips according to the direction of the circuit conduction, which can avoid the alignment problem during the evaporation of the cathode, and achieve the purpose of simplifying the process of the organic light-emitting panel.

Please refer to FIG. 1, the existing organic light-emitting panel 1 includes a substrate 11, several first electrodes 12, several insulating layers 13, several barrier layers 14, several organic light-emitting layers 15, and several second electrodes. electrode 16.

The first electrodes 12 are respectively formed on a surface of the substrate 11 . The insulating layers 13 are formed by positive photoresist, and are respectively formed on the first electrodes 12 to intersect with the first electrodes 12 . The barrier layers 14 are formed by negative photoresist, and are respectively formed on the insulating layers 13 . Each organic light emitting layer 15 is respectively formed between the insulating layers 13 . Each second electrode 16 is respectively formed on the organic light emitting layer 15 and located between the barrier layers 14 .

When those skilled in the art make the insulating layers 13 and the barrier layers 14, they apply positive photoresist on the substrate 11 with the first electrodes 12, and perform soft baking, exposure, development, and hard baking. Afterwards, the insulating layers 13 are formed. Afterwards, negative-type photoresist is coated on the insulating layers 13, and the barrier layers 14 are formed after the steps of soft baking, exposure, development, and hard baking. However, because the insulating layers 13 and the barrier layers 14 are made of positive photoresist and negative photoresist respectively, there are some problems: First, after the second hard baking, due to the difference in thermal expansion coefficient between the two, Therefore, it is easy to cause when the barrier layers 14 are formed on the insulating layers 13, there will be a slight displacement phenomenon and cause the problem of misalignment; secondly, due to the difference in the materials, the The adhesion between the insulating layer 13 and the barrier layers 14 is not good. After the product is used for a period of time, the junction between the barrier layer 14 and the insulating layers 13 is prone to deterioration or even peeling off, resulting in product reliability. These two are the bottlenecks for improving the yield rate of the current manufacturing process.

Based on the above, seeking to effectively solve the above two shortcomings is one of the important issues to improve the current OLED display panel technology.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide an organic light-emitting panel and an organic light-emitting component that avoid the displacement of the barrier layer and prevent the peeling of the barrier layer and the insulating layer.

The utility model is characterized in that both the insulating layer and the barrier layer are made of negative photoresist, so as to effectively prevent the misalignment caused by the displacement phenomenon caused by the different thermal expansion coefficients when the barrier layer is formed on the insulating layer. The question of alignment or stripping.

To achieve the above purpose, the present invention provides an organic light-emitting panel, which includes a substrate, several first electrodes, several insulating layers, several barrier layers, and several organic light-emitting layers. Several first electrodes are respectively formed on one surface of the substrate; several insulating layers are negative photoresist, and are respectively formed on the first electrodes interlaced with the first electrodes; several barrier layers are negative The photoresist is respectively formed on each insulating layer; each organic luminous layer is respectively formed between the insulating layers; the second electrode is respectively formed on the organic luminous layer and is located between the blocking layers.

In addition, the utility model provides an organic light-emitting component, which includes a substrate, a first electrode, several insulating layers, several barrier layers, an organic light-emitting layer, and a second electrode. The first electrode is formed on a surface of the substrate; the insulating layers are negative photoresist, and are respectively formed on the first electrode interlaced with the first electrode; the barrier layers are negative photoresist and are respectively formed on the first electrode. On each insulating layer; the organic light-emitting layer is formed between the insulating layers; the second electrode is formed on the organic light-emitting layer and is located between the barrier layers.

Based on the above, since both the insulating layer and the barrier layer are made of negative photoresist, the displacement of the barrier layer and the separation of the barrier layer and the barrier layer can be prevented. Accordingly, the problem of poor product reliability caused by the different materials of the two materials can be prevented.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of an existing organic light-emitting panel;

Fig. 2 is a three-dimensional schematic diagram of an organic light-emitting panel of the present invention;

FIG. 3 is a schematic cross-sectional view of the organic light-emitting component of the present invention.

Explanation of symbols in the figure

1 organic light emitting panel

11 Substrate

12 first electrode

13 insulating layer

14 barrier layer

15 organic light-emitting layer

16 second electrode

2 organic light emitting panel

21 Substrate

22 first electrode

23 insulating layer

24 barrier layer

25 organic light-emitting layer

26 second electrode

3 organic light emitting components

Detailed ways

The organic light emitting panel according to a preferred embodiment of the present invention will be described below with reference to FIG. 2 .

Please refer to FIG. 2, the organic light-emitting panel 2 according to a preferred embodiment of the present invention includes a substrate 21, several first electrodes 22, several insulating layers 23, several barrier layers 24, and several organic light-emitting layers. 25, and several second electrodes 26.

In this embodiment, the substrate 21 can be a glass substrate, or a plastic substrate, or a flexible substrate. Here, the plastic substrate and the flexible substrate can be a polycarbonate (polycarbonate, PC) substrate, a polyester (polyester, PET) substrate, a cyclic olefin copolymer (COC) substrate, a metal chromium substrate-cycloolefin copolymer (metallocene-based cyclic olefin copolymer, mCOC) substrate or a thin glass (Thin Glass).

The first electrode 22 is formed on a surface of the substrate 21. In an embodiment of the present invention, the first electrode 22 is formed on the substrate 21 by sputtering or ion plating. superior. The material of the first electrode 22 is a conductive metal oxide, wherein the conductive metal oxide can be indium tin oxide (ITO), aluminum zinc oxide (AZO) or indium zinc oxide (IZO), and its thickness is generally about Above 500 Å.

The insulating layers 23 are disposed on the first electrodes 22, and each insulating layer 23 and the first electrodes 22 are alternately arranged to form several pixels. The barrier layers 24 are respectively formed on the insulating layers 23 to separate the cathodes between the pixels. In this implementation, the insulating layer 23 and barrier layer 24 can be made of any negative photoresist, such as a mixture of Propylene glycol monomethyl ether acetate and Novolak resin, Polyhydroxystyrene type resin, or Photoacid generator and Crosslinking agent. On the other hand, the developing solution for image development is an alkaline developing solution.

Each organic light emitting layer 25 is respectively formed between the insulating layers 23 . The second electrodes 26 are respectively formed on the organic light emitting layer 25 and located between the barrier layers 24 .

In addition, the organic light-emitting panel of the present invention can further include a sealing body (not shown in the figure), and the sealing body combines the first electrodes 22, the insulating layers 23, the barrier layers 24, the organic light-emitting layers 25 , and the second electrodes 26 cover and adhere closely to the substrate 21 .

Hereinafter, an organic light emitting device according to a preferred embodiment of the present invention is illustrated with FIG. 3 . Since the structure of the organic light-emitting component of the preferred embodiment of the present invention is roughly the same as the above-mentioned organic light-emitting panel, the figure numbers thereof are used continuously. In addition, in order to avoid redundant description, the detailed description of the constituent elements of the organic light emitting device will be omitted in this embodiment.

As shown in Figure 3, the organic light-emitting component 3 of the preferred embodiment of the present invention at least includes a substrate 21, a first electrode 22, two insulating layers 23, two barrier layers 24, an organic light-emitting layer 25, and a second electrode 26. The first electrode 22 is formed on a surface of the substrate 21 . The insulating layers 23 are negative photoresists, and are respectively formed on the first electrodes 22 to intersect with the first electrodes 22 . The barrier layers 24 are negative photoresist and are respectively formed on the insulating layers 23 . The organic light emitting layer 25 is formed between the two insulating layers 23 . The second electrode 26 is formed on the organic light emitting layer 25 and located between the two barrier layers 24 . In addition, the organic light-emitting component of the present utility model may further include an encapsulation body (not shown in the figure), the encapsulation body comprises the first electrode 22, the insulating layers 23, the barrier layers 24, the organic light-emitting layer 25, And the second electrodes 26 cover and adhere closely to the substrate 21 .

Based on the above, since the insulating layers and the barrier layers of the present invention are composed of negative photoresists, there will be no gap between the insulating layers and the barrier layers in the prior art during hard baking. The displacement phenomenon is caused by the different thermal expansion coefficients of the two. Furthermore, in the present utility model, the insulating layers and the barrier layers are composed of negative photoresists of the same material, so the adhesion between the two is better. Therefore, compared with the prior art, the In the case of making the insulating layers and the barrier layers with positive and negative photoresists, it has better product reliability. In addition, because the present invention uses negative photoresist to make the insulating layers and the barrier layers, only one development operation is required in the organic light-emitting device manufacturing process, and the insulating layer of the prior art after making the positive photoresist is also omitted. The cleaning action before coating negative photoresist can effectively simplify the process and reduce environmental pollution.

To sum up, the utility model can not only effectively solve the problems existing in the prior art, but also reduce the steps and cost of the manufacturing process, and has environmental protection benefits.

The foregoing is illustrative only, not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present utility model shall be included in the scope of the claims.

Claims (10)

1. An organic light-emitting panel, characterized in that, comprising: a substrate; Several first electrodes are respectively formed on a surface of the substrate; Several insulating layers, which are negative photoresists, are respectively formed on the first electrodes to intersect with the first electrodes; Several barrier layers, which are negative photoresists, are respectively formed on each insulating layer; several organic light-emitting layers, each organic light-emitting layer is respectively formed between the insulating layers; and Several second electrodes are respectively formed on the organic light-emitting layer and located between the barrier layers. 2. The organic light-emitting panel according to claim 1, wherein the organic light-emitting panel further comprises an encapsulation, the encapsulation comprises the first electrodes, the insulating layers, the barrier layers, the organic The light-emitting layer and the second electrodes cover and adhere closely to the substrate. 3. The organic light emitting panel as claimed in claim 1, wherein the substrate is a glass substrate. 4. The organic light emitting panel as claimed in claim 1, wherein the substrate is a flexible substrate. 5. The organic light emitting panel as claimed in claim 1, wherein the first electrode is a conductive metal oxide electrode layer. 6. An organic light-emitting component, characterized in that it comprises: a substrate; a first electrode formed on a surface of the substrate; Several insulating layers, which are negative photoresists, are respectively formed on the first electrode to intersect with the first electrode; Several barrier layers, which are negative photoresists, are respectively formed on each insulating layer; An organic light-emitting layer is respectively formed between the two insulating layers; and A second electrode is formed on the organic light-emitting layer and located between the barrier layers. 7. The organic light-emitting component according to claim 6, wherein the organic light-emitting component further comprises an encapsulation body, and the encapsulation comprises the first electrode, the insulating layer, the barrier layer, the organic light-emitting layer, and The second electrode covers and adheres closely to the substrate. 8. The organic light emitting panel as claimed in claim 6, wherein the substrate is a glass substrate. 9. The organic light emitting panel as claimed in claim 6, wherein the substrate is a flexible substrate. 10. The organic light emitting device as claimed in claim 6, wherein the first electrode is a conductive metal oxide electrode layer.

Images