Large-size full-color OLED (Organic Light-Emitting Diode) display

Abstract

The invention relates to a large-size full-color OLED (Organic Light-Emitting Diode) display, which comprises a complete color converting base plate and a display module. The large-size full-color OLED display is characterized in that a green color converting film is covered on a green filter plate film; the display module is formed by assembling a plurality of display units; each display unit comprises a transparent base plate, a plurality of OLED luminescent devices and a control loop for driving the OLED luminescent devices to radiate light; the transparent base plates are seamlessly adhered onto a red filter plate film, a green filter plate film, a blue filter plate film, a black matrix grid film and a green color converting film on the color converting base plate through colloidal packing material; and each OLED luminescent device in the display unit has a filter plate film on the color converting base plate corresponding to the OLED luminescent device independently. The large-size full-color OLED display has the advantages of being good in visual effect, high in yield and the like, is capable of being convenient to realize size dimension, and is beneficial for improving the performance price ratio for manufacturing the display.

Description

technical field [0001] The invention relates to the technical field of large-size display manufacturing, in particular to a large-size full-color OLED (organic electroluminescent) display manufactured by using color conversion technology and OLED display module splicing technology. Background technique [0002] With the rapid development of the electronics industry and the continuous improvement of society's requirements for information display products, it can be used in airports, large shopping centers, monitoring centers, stadiums, etc., for indoor use in information dissemination, news release, and securities trading. There is a huge market demand for large-scale flat-panel display products of type or semi-indoor type. As a traditional technology that can provide large-scale information display, LED large-screen display integrates microelectronics technology, computer technology, and information processing technology. With its strong color stimulation, wide dynamic range...

AI Technical Summary

Problems solved by technology

[0014] However, currently, in terms of the development level of three-color OLED light-emitting materials, the light quantum efficiency of blue OLED light-emitting materials can only reach the level of 6-8%, and the lifespan is only about 20,000 hours when driven for a long time, which is far behind. The light quantum efficiency of green and red materials is more than 20%, and the service life of hundreds of thousands of hours is the development level

Therefore, in a sense, the relatively backward reality of blue-light OLED materials constitutes a technical bottleneck for the OLED display industry itself, and at the same time, it also hinders the development of large-screen display applications.

It is precisely because of the huge difference in the characteristics of different OLED materials that Mitsubishi Electric’s large-size OLED display screens are driven for a long time, because the blue light pixels are degraded too quickly, and the full-color OLED display screens will inevitably have the degradation effect of color drift. Problems with poor color stability

At the same time, Mitsubishi Electric's large-size OLED display is to arrange small standard display units together as simply as architectural tiles. Although each standard display unit is very close, there must be a certain gap. At the same time, the display module cannot be completely guaranteed to be kept on an absolute plane. Like the traditional LED splicing screen, it will cause certain visual differences and cause defects in the overall visual effect of the large-size display.

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