Organic light-emitting display device and manufacturing method thereof

Abstract

The invention discloses an organic light-emitting display device and a manufacturing method thereof. The organic light-emitting display device comprises a substrate, pixel definition layers located on the substrate, first organic light-emitting layers, second organic light-emitting layers and third organic light-emitting layers, wherein multiple pixel units distributed together are defined by the pixel definition layers, each pixel unit comprises at least one first sub pixel, at least one second sub pixel and at least one third sub pixel, and each third sub pixel comprises at least two third auxiliary sub pixels; the first organic light-emitting layers are arranged in the at least one first sub pixel; the second organic light-emitting layers are arranged in the at least one second sub pixel, the third organic light-emitting layers are arranged in the at least two third auxiliary sub pixels and has a brightest light-emitting characteristic, and the third organic light-emitting layers arranged in the at least two third auxiliary sub pixels are connected together. According to the organic light-emitting display device and the manufacturing method thereof, the image display gravities of the organic light-emitting display device can be balanced, the color mixture phenomenon of an organic light-emitting display panel can be avoided, and accordingly, the yield of the organic light-emitting display device is increased.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic light-emitting display device and a manufacturing method thereof. Background technique [0002] Organic Light-Emitting Diode (OLED) is a semiconductor device that can convert electrical energy into light energy. panel. According to different driving methods, OLEDs are further divided into active-matrix organic light emitting diodes (AMOLED) and passive-matrix organic light emitting diodes (passive-matrix organic light emitting diodes, PMOLED). [0003] The AMOLED display device includes a plurality of pixel units arranged in a matrix, and the pixel units include red sub-pixels R, blue sub-pixels B and green sub-pixels G, because the red sub-pixels R, blue sub-pixels B and green sub-pixels G correspond to The organic light-emitting materials used are different, so the red sub-pixel R, blue sub-pixel B, and green sub-pixel G have different luminous characteristics. Am...

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Problems solved by technology

[0004] Figure 1a It is a structural diagram of a pixel unit in an organic light-emitting display device in the prior art, see Figure 1a , since the areas of red sub-pixel R, blue sub-pixel B and green sub-pixel G in each pixel unit are equal, and compared with the other two sub-pixels, green sub-pixel G has the highest brightness, when AMOLED is displaying images There will be an unbalanced display center of gravity; in order to improve the unbalanced display center of gravity, in the prior art, two green sub-pixels G are set in one pixel unit to achieve (see Figure 1b ), however, in the process of manufacturing AMOLED, it is necessary to use a high-precision alignment system and a fine metal mask (Fine Metal Mask, FMM) to separately perform the red sub-pixel R, blue sub-pixel B and green sub-pixel G Evaporation, due to the limitation of FMM precision, it is easy to shift during the evaporation process, causing the organic light-emitting materials to be stacked on each other, causing color mixing of the AMOLED display panel, thereby reducing the yield of the AMOLED display panel

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