Method for producinfg self luminous panel

Abstract

The invention provides a method of manufacturing a self-luminous panel using a sealing structure directly covering a self-luminous element on a substrate with sealing material, in which productivity of the panel is not made worse. A self-luminous element region forming process A and a luminous element region forming process B are independently performed. A substrate having a self-luminous element region formed thereon in the self-luminous element region forming process A and a seal substrate having a layer of sealing material formed thereon in the seal member forming process B are laminated to each other in a sealing process C. In the display region forming process A, the self-luminous element forming process is performed (S2) after a pretreatment process (S1). In the luminous element region forming process B, the sealing members are formed into the sizes of the sealing substrates respectively (S3) and then the sealing material is adhered on the sealing member (S4).

Description

technical field [0001] The invention relates to a method for manufacturing a self-luminous panel. Background technique [0002] Self-luminous panels represented by organic EL (electroluminescence) panels can be used in displays of mobile phones, flat-screen TVs, information terminals, etc., and are expected to be used in the interior of automotive function displays such as speedometers, etc. Panels, functional display parts for electrical appliances, film displays, outdoor guide displays, or lighting are being actively researched and developed. [0003] This kind of self-luminous panel is formed by arranging multiple or single self-luminous elements on a substrate. As self-luminous elements, in addition to organic EL elements, LEDs (light-emitting diodes), FEDs (electroluminescent displays), etc. light emitting element. [0004] The structure of the self-luminous element takes an organic EL element as an example. It is formed in such a way that an organic layer (including ...

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Problems solved by technology

[0014] If the self-luminous element (organic EL element) formed on the substrate is directly covered with a sealing material (sealing resin) as in the above-mentioned prior art, it is necessary to increase the number of substrates on which the self-luminous element is formed (hereinafter referred to as the element-side substrate). ) performs the process of coating the sealing material, so there is a problem that the production efficiency of the panel is lowered due to the increase of the manufacturing process of the element side substrate

[0015] Moreover, since the sealing material layer is formed on the self-luminous element formed on the substrate, it is difficult to perform degassing and other treatments on the sealing material before pasting the sealing substrate, so there is also a problem that the sealing effect on the self-luminous element cannot be fully obtained. The problem

[0016] In addition, it is difficult to control the coating range of the sealing resin before curing with high precision. In the method of manufacturing the organic EL display device described in Patent Documents 1 and 2, as shown in FIG. , it is necessary to use more sealing resin J4 than necessary, so it is not only wasteful, but sometimes the sealing resin J4 cannot completely cover the display area J2

Furthermore, since an additional process of forming and removing the cover portion J5 is required, there is a problem that the number of manufacturing steps of the element side substrate increases and the production efficiency of the panel decreases.

[0017] In addition, in the manufacturing methods of the organic EL display devices described in the above-mentioned Patent Documents 3 and 4, there is also a problem that it is difficult to observe the appropriate amount of the sealing resin J15 coated on the substrate J11, and the amount of the sealing resin J15 If the amount of J15 is small, a gap will be generated between the substrate and the sealing substrate, and sufficient sealing cannot be achieved. If the amount of sealing resin J15 is large, the sealing resin J15 will diffuse to the external electrodes beyond the suppression part J16, and the suppression part J16 will not be fully developed. the role of

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