OLED pixel structure, OLED substrate and OLED module

Abstract

The invention discloses an OLED pixel structure, an OLED substrate and an OLED module. According to the OLED pixel structure, a plurality of block-shaped barrier ribs are arranged in the SEGMENT direction of a matrix pixel area or at the periphery of a special-shaped pixel area, and the spacing between adjacent block-shaped barrier ribs is less than 30 microns. The number of water vapor release channels in an isolation layer is increased so that water vapor in the isolation layer can be released in time and adsorbed by the desiccant in the OLED module. Therefore, organic materials in the pixels are prevented from being eroded by water vapor, and pixel contraction and device failure are prevented.

Description

technical field [0001] The invention relates to the field of OLEDs, in particular to an OLED pixel structure, an OLED substrate and an OLED module. Background technique [0002] OLED is known as a "dream display" due to its ultra-thin, beautiful display and flexible display. In order to achieve a fantastic and beautiful display effect, perfect encapsulation is more important than the production of high-quality organic layers. Since the organic layer materials of OLEDs are extremely sensitive to water vapor and oxygen (especially water vapor), when encapsulating OLEDs, not only edge sealing with frame glue is required, but also a desiccant is required. The water vapor not only comes from the external water vapor penetrating the glass and frame glue, but also includes a small amount of water vapor released from the inside of the OLED device; among them, if the internal water vapor of the OLED device can be released in time, it will be absorbed by the desiccant, if it cannot b...

AI Technical Summary

Problems solved by technology

The water vapor not only comes from the external water vapor penetrating the glass and frame glue, but also includes a small amount of water vapor released from the inside of the OLED device; among them, if the internal water vapor of the OLED device can be released in time, it will be absorbed by the desiccant, if it cannot be released in time, then It may gradually damage organic materials, resulting in pixel shrinkage and device failure, especially in high temperature or high temperature reliability tests, where water vapor will cause more serious erosion of pixels

[0003] In the OLED with matrix pixel structure, several strip-shaped barrier walls for isolating the metal cathode are arranged on the isolation layer along the COMMON direction. The strip-shaped barrier walls are not only used to isolate the metal cathode, but also can block the water vapor in the isolation layer from However, in the SEGMENT direction, that is, in the direction perpendicular to the direction of the strip-shaped barrier wall, the water vapor in the isolation layer cannot be released in time, and it will erode the organic matter in the pixel from the SEGMENT direction. Material

The OLED with special-shaped pixel structure does not need to isolate the metal cathode, and there is no barrier wall, so the water vapor in the isolation layer will erode the organic material in the pixel from the entire periphery.

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