A kind of oled mosaic display screen and manufacturing method thereof

Abstract

An OLED mosaic display suitable for the field of display technology, comprising an OLED front panel (1) and a single-structure TFT drive backplane (2), and a packaging substrate (3) is also provided on the light-emitting side of the OLED front panel (1) ). The OLED front panel (1) comprises a plurality of mutually spliced ​​OLED front panel units (11). The OLED front panel unit (11) is docked with the TFT driving back panel (2) through a conductive adhesive film. By splicing the OLED front panel unit (11) on the TFT back panel (2), the production efficiency and yield rate of the display screen are improved, and the cost is reduced. Splicing the OLED front panel (1) reduces the splicing gap and can realize seamless splicing. Compared with the traditional structure of using optical lenses to eliminate splicing gaps, the yield rate of splicing display screens is improved. The OLED front plate (1) and the TFT driving back plate (2) are connected by using a conductive adhesive film, thereby increasing the display aperture ratio. And the display screen overcomes the problems of difficult control of alignment accuracy and poor stability.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an OLED splicing display screen and a manufacturing method thereof. Background technique [0002] At present, most of the display devices based on various display technologies (such as PDP, LCD, OLED, etc.) are limited by their own size, and it is difficult to obtain large-screen displays with low cost and high yield rate at the same time, which affects high-performance, large-screen displays. The development of technology has limited the application of display technology in conference rooms, home theaters, outdoor advertising and other fields. Organic electroluminescence (OLED) technology has become an emerging display technology due to its advantages of active light emission, ultra-thin, low voltage, fast response, high brightness, and wide viewing angle. A variety of large-screen and high-definition OLED display products have entered the flat-panel display market...

AI Technical Summary

Problems solved by technology

The existing commonly used OLED display technology is mainly to directly prepare OLED light-emitting pixel units on the prepared TFT drive substrate, but it is very difficult and costly to prepare a large-area OLED light-emitting panel. , the preparation cost will increase exponentially, and the yield rate will also decrease

[0003] The existing technology mostly adopts the way of splicing display screens to directly splice multiple display screens with ultra-narrow borders. Due to the existence of the row / column scanning drive circuit at the edge of the display screen, it is still impossible to truly achieve "seamless" splicing. The existing technology also has The optical lens array is used to enlarge the image to the border area of ​​the splicing screen to achieve seamless display, but the use of optical lenses and precise alignment increase the manufacturing cost and reduce the yield rate, which makes the manufacturing process of large-size display devices more complicated and costly. higher

[0004] To sum up, the large-size splicing OLED display in the prior art still has the problems of difficult to eliminate the splicing gap and low yield rate.

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