KR100649199B1 - Organic matter supply system - Google Patents

Abstract

An organic material supply system is provided to increase an operation margin of an organic electronic apparatus by effectively storing an organic material at a proper temperature. An organic material supply system includes a cooling tank(10), a buffer tank(20), a first connection line(50), a supply tank(30), a second connection line(60), a third connection line(80), and an open/close portion. An organic material is contained in a frozen state in the cooling tank. The buffer tank receives the frozen organic material and turns the organic material into a normal temperature state. The first connection line couples the cooling tank with the buffer tank. The supply tank receives and supplies the organic material to a coater. The second connection line couples the buffer tank with the supply tank. The third connection line couples the supply tank with the coater. The open/close portion is implemented on the second connection line and driven by a temperature of the organic material.

Description

Organic material supply system {ORGANIC MATTER SUPPLY SYSTEM}

1 is a schematic structural diagram of an organic material supply system according to an embodiment of the present invention.

The present invention relates to an organic material supply system, and more particularly, it is possible to solve the problem of contamination due to frequent replenishment of the organic material, and to solve the problem over time by efficiently storing the organic material at an appropriate temperature to increase the process margin The present invention relates to an organic material supply system.

Recently, various flat panel displays have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. Such flat panel displays include Liquid Crystal Display (LCD), Field Emission Display (FED), Plasma Display Panel (PDP) and Organic Light Emitting Display (PDP). Etc.

Among these, the organic light emitting diode display uses a phenomenon in which electrons and holes injected through a cathode and an anode are recombined to form an exciton in an organic thin film, and light of a specific wavelength is generated by energy from the formed excitons. It is a light emitting display device. Such an organic light emitting diode display has advantages of being able to be driven at a low voltage, being lightweight, thin, having a wide viewing angle, and having a fast response speed.

The organic light emitting diode of the organic light emitting diode display is also called an organic light emitting diode (OLED) due to its diode characteristic and includes an anode electrode, an organic layer, and a cathode electrode which are stacked on a substrate.

The organic layer includes an organic emission layer (EML), in which holes and electrons recombine to form excitons and light is generated.

In order to increase the light emission efficiency, holes and electrons must be more smoothly transported to the organic light emitting layer. To this end, an Electron Transport Layer (ETL) may be disposed between the cathode electrode and the organic light emitting layer, and a Hole Transport Layer (HTL) may be disposed between the anode electrode and the organic light emitting layer, and the anode electrode and A hole injection layer (HIL) may be disposed between the hole transport layer, and an electron injection layer (EIL) may be disposed between the cathode electrode and the electron transport layer.

In an active organic light emitting display device, the organic light emitting diode is generally formed on the planarization layer, and is separated from an adjacent device by a pixel defining layer.

The pixel defining layer and the planarization layer are typically formed by coating a polyimide or acrylic organic material.

By the way, the above-mentioned organic material is stored in a frozen state, and after using the material, the organic material is supplied to the supply tank by changing to a normal temperature state and then supplied from the supply tank to the coater.

Thus, conventionally, a refrigeration tank for storage and a supply tank for supplying organic materials to the coater are separately configured, and the supply tank has a smaller capacity than the refrigeration tank, and the organic material from the refrigeration tank to the supply tank. Replenishment is done by hand by an operator.

Therefore, the organic materials stored in the refrigeration tank should be replenished frequently in the supply tank, so that the problem of contamination of organic materials may occur due to frequent replenishment work, and the problem of deterioration of process margins due to the chronological problem of organic materials have.

The present invention is to solve the above problems, the object is to solve the problem of contamination due to frequent replenishment of the organic material, and to solve the problem over time by efficiently storing the organic material at an appropriate temperature to increase the process margin To provide an organic material supply system.

In order to achieve the above object, the present invention provides an organic material supply system configured to automatically replenish the organic material stored in the refrigeration tank to the supply tank through a buffer tank for conversion to room temperature.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

1 is a schematic structural diagram of an organic material supply system according to an embodiment of the present invention.

As shown, the organic material supply system according to the embodiment of the present invention includes a refrigeration tank 10, a buffer tank 20, and a supply tank 30.

The refrigeration tank 10 stores an organic material such as polyimide or acrylic. At this time, the freezing tank 10 stores the organic material in a freezing state with fluidity.

Nitrogen injection pipe 40 for applying pressure to the organic material is installed in the lower portion of the refrigeration tank 10, one end of the first connection line 50 is coupled to the top, the other side of the first connection line 50 The end is coupled to the lower portion of the buffer tank 20 at room temperature.

The buffer tank 20 serves to convert the organic material from the freezing tank 10 to room temperature.

In addition, one end of the second connection line 60 is coupled to the upper portion of the buffer tank 20, and the other end of the second connection line 60 is coupled to the lower portion of the supply tank 30.

The second connection line 60 is provided with an opening and closing switch 70 to be supplied only when the organic material supplied to the supply tank 30 is room temperature, for example, 15 ℃ or more.

Therefore, only the organic material converted to normal temperature is supplied to the supply tank 30.

Here, the first connection line 50 is installed in the lower portion of the buffer tank 20, and the second connection line 60 is installed in the upper portion of the buffer tank 20. This is to go up.

In addition, a third connection line 80 is installed at an upper portion of the supply tank 30, and a nozzle 90 is installed at an end of the connection line 80.

The nozzle 90 functions to supply an organic material to the substrate 94 provided on the cup member 92.

The organic material supplied to the substrate 94 is used as a planarization layer or a pixel defining layer of the organic light emitting diode display.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

As described above, in the organic material supply system of the present invention, the organic material stored in the refrigeration tank is automatically supplied to the supply tank via the buffer tank.

Therefore, it is not necessary to replenish the organic material frequently, so that the problem of contamination of the organic material can be solved, and the organic material can be efficiently stored at an appropriate temperature, thereby solving the problem over time, thereby increasing the process margin.

Claims (4)

A refrigeration tank for storing the organic material in a frozen state; A buffer tank configured to receive a frozen organic material and convert the same into a room temperature; A first connection line connecting the refrigeration tank and the buffer tank; A supply tank receiving the organic material converted to room temperature and supplying it to the coater; A second connection line connecting the buffer tank and the supply tank; A third connecting line connecting the supply tank and the coater; And An opening / closing part installed on the second connection line and opened / closed according to the temperature of the organic material. Organic material supply system comprising a. The method of claim 1, And both ends of the first connecting line are connected to an upper portion of the refrigeration tank and a lower portion of the buffer tank. The method of claim 1, And both ends of the second connecting line are connected to an upper portion of the buffer tank and a lower portion of the supply tank. The method according to any one of claims 1 to 3, A lower portion of the refrigeration tank is provided with a nitrogen inlet tube for pressurizing the organic material stored in the tank to the buffer tank.

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