Organic light emitting display device and manufacturing method

Abstract

An organic light emitting display device comprises a TFT substrate; an anode layer formed on the TFT substrate, wherein the anode layer comprises a plurality of anode blocks corresponding to a plurality of sub-pixels and anode separation regions formed among the plurality of anode blocks; a black photoresist layer formed on the TFT substrate, filled in the anode separation regions and having the thickness larger than that of the anode layer; an organic light emitting layer formed on the anode layer and the black photoresist layer; a cathode layer formed on the organic light emitting layer; a colorful light filtering layer formed on the cathode layer, wherein the colorful light filtering layer comprises a plurality of colorful light filtering units corresponding to the plurality of anode blocks; and a packaging layer formed on the colorful light filtering layer. According to the invention, the colorful light filtering layer is directly formed on the cathode layer, the interval between a light emitting unit and the colorful light filtering layer is reduced, so that the light loss on the side surface of the light emitting unit is reduced, the color mixing phenomenon is further reduced, and the display effect is improved; in addition, black matrixes are reduced, the cost is lowered, and the production efficiency is improved.

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. Background technique [0002] Organic light-emitting diode (OLED) is a technology that uses organic semiconductor materials to emit light under the drive of current to realize display. Compared with traditional liquid crystal display (LCD), OLED has ultra-thin, high luminous efficiency, rich colors, and low-voltage DC drive. , No need for backlight, no viewing angle limitation, high reaction rate and wide temperature range, etc. With the rapid development of flat panel display technology, OLED has become the mainstream of the new generation display technology. [0003] In order to achieve full-color OLED display, one way is to use precision mask (FMM) technology to prepare red, green and blue (RGB) three colors respectively; another way is to use white organic light-emitting diodes (WOLED) and Color filter la...

AI Technical Summary

Problems solved by technology

It is very difficult and costly to realize OLED high-resolution display with FMM technology, while WOLED and CF layers can realize OLED high-resolution full-color display without sophisticated mask technology, which is relatively low difficulty and low cost

[0004] At present, in the prior art, the realization of full color through white organic light-emitting diodes (WOLED) and color filter layer (CF, ColorFilter) mainly utilizes the method of laminating the TFT array substrate prepared with WOLED and the CF layer; When combined, there is a certain gap between the WOLED and the CF layer, and the WOLED is a self-illuminating light source. The light from the light-emitting unit reaches the CF layer in the side direction and will leak light due to the gap, which will cause display color mixing and other phenomena, affecting the quality of the display.

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