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OLED panel, manufacturing method thereof and encapsulation effect detection method

A manufacturing method and panel technology, applied in identification devices, material analysis through observation of the influence of chemical indicators, instruments, etc., can solve the problems that cannot reflect the small volume changes of desiccants, etc., and achieve easy and accurate packaging effects , The effect of simple process

Active Publication Date: 2014-04-16
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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AI Technical Summary

Problems solved by technology

The principle of this method is simple, but there are reliability problems. For example, the volume of the desiccant expands after absorbing moisture, and the method of imaging can only reflect the change of the area; Volume change
Therefore, the use of desiccant hygroscopic expansion method to detect the packaging effect needs to be improved

Method used

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  • OLED panel, manufacturing method thereof and encapsulation effect detection method
  • OLED panel, manufacturing method thereof and encapsulation effect detection method
  • OLED panel, manufacturing method thereof and encapsulation effect detection method

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Embodiment Construction

[0043] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0044] see figure 1 , the present invention provides an OLED panel, comprising: a substrate 20, a cover plate 30 disposed opposite to the substrate 20, an OLED element 22 disposed on the substrate 20, a humidity-sensitive color-changing film 40 disposed on the cover plate 30, and the substrate 20 The sealant frame 50 bonded together with the cover plate 30 forms a sealed space 24 between the substrate 20, the cover plate 30, and the sealant frame 50, and the OLED element 22 and the humidity-sensitive color-changing film 40 are all sealed in the sealant space. In the space 24, the moisture-sensitive color-changing film 40 is made of a polymer material that is easy to absorb moisture and swells mixed with a metal compound salt.

[0045] Describ...

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Abstract

The invention provides an OLED panel, a manufacturing method thereof and an encapsulation effect detection method. According to the encapsulation effect detection method, hygroscopic expanded high polymer materials are utilized and mixed with metallic salt compounds to form a humidity sensitive discolored film; because the hygroscopic expanded high polymer materials have good hygroscopicity, the humidity sensitive discolored film can be used as drying agents in a sealed space of the OLED panel so as to prolong the service life of the OLED panel; meanwhile, part of metallic salt compounds react with water vapor to become hydrates, and then the color changes, so the encapsulation effect can be judged according to changes of the color of the humidity sensitive discolored film after moisture absorption; moreover, it can be simply judged whether encapsulation fails through visual inspection; an infrared spectrometer can also be utilized to accurately detect the water vapor content in the sealed space of the OLED panel, and then the encapsulation effect can be accurately judged. Meanwhile, the OLED panel used in the encapsulation effect detection method is easy to manufacture and easy to realize.

Description

technical field [0001] The invention relates to the field of flat display, in particular to an OLED panel, a manufacturing method thereof, and a detection method for encapsulation effect. Background technique [0002] The flat panel display device has many advantages such as thin body, power saving, and no radiation, and has been widely used. Existing flat panel display devices mainly include liquid crystal display devices (LCD, Liquid Crystal Display) and organic light emitting display devices (OLED, Organic Light Emitting Display). [0003] Organic light-emitting display devices have the characteristics of self-illumination, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., so they have received extensive attention, and as a new generation of display methods, they have gradually replaced traditional liquid crystal display devices. Widely used in mobile phone screens, computer monitors, full-color TVs, etc. OLED display technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33G01N21/78
CPCH10K71/70H10K59/874
Inventor 曾维静刘亚伟
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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