A display device and a method for manufacturing the same

CN114300523BActive Publication Date: 2024-12-31SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Patent Information

Application Number
CN202111641043.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-12-29
Publication Date
2024-12-31
Estimated Expiration
2041-12-29

AI Technical Summary

Technical Problem

The attenuation speed of blue light in existing OLED display devices is much greater than that of red light and green light, resulting in mismatch in service life and the problem of yellowing of the display device after long-term use.

Method used

Using a structure including a first luminous layer, a blue luminous layer and a color filter, the first luminous layer is prepared by an inkjet printing process and a blue luminous layer is prepared in combination with an evaporation process to form a double blue light structure of Side by side. Color filters reduce the attenuation speed of blue light and improve the service life of blue light.

Benefits of technology

This makes the attenuation speeds of red, green and blue light consistent, extend the service life of the display device, improves luminous efficiency, and reduces device power.

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Abstract

The present invention relates to a display device and a method for preparing the same. The display device of the present invention comprises: a first substrate, a first light-emitting layer, a blue light-emitting layer and a color filter. The first light-emitting layer comprises a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit. The present invention utilizes the first light-emitting layer, the blue light-emitting layer and the color filter to reduce the attenuation rate of blue light, increase the service life of blue light, and make the attenuation rates of red light, green light and blue light tend to be consistent, thereby avoiding the problem of yellowing of the display device after long-term use. The present invention prepares the first light-emitting layer by a printing process, the first light-emitting layer comprises a blue light-emitting unit, a red light-emitting unit and a green light-emitting unit; prepares the blue light-emitting layer by an evaporation process. The present invention combines the printing process and the evaporation process to prepare a side-by-side dual blue light structure, thereby improving the luminous efficiency of the display device, reducing the device power of the display device and increasing the service life of the display device.
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