Encapsulation cover plate, organic light-emitting display and preparation method thereof
A technology of organic light-emitting devices and packaging cover plates, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electric solid-state devices, etc., and can solve problems such as erosion, reduced stability of organic light-emitting displays, and reduced luminous quantum efficiency of organic light-emitting displays. , to achieve the effects of prolonging service life, good packaging effect and reducing damage
Active Publication Date: 2019-06-21
BOE TECH GRP CO LTD
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Problems solved by technology
Oxygen and carbonyl compounds generated by the oxidation of the light-emitting layer are effective quenchers, which will significantly reduce the luminous quantum efficiency of the organic light-emitting display; water vapor will hydrolyze the organic layer compound and affect the conductivity, resulting in a significant increase in the stability of the organic light-emitting display. Reduced; the metal materials used to form the cathode of the organic light-emitting display are mostly chemically active metals, which are easily corroded in the air or other atmospheres containing oxygen, especially in environments containing water vapor. Corrosion, which will seriously affect the service life of the device in the organic light-emitting display
Method used
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[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of patent protection of the present invention.
[0042] like figure 1 , figure 2 as well as image 3 As shown, the present invention provides a package cover plate, comprising:
[0043] The cover plate body 1, the cover plate body 1 is provided with an opening groove 2 for passing in dry gas;
[0044] A cover plug 3 for covering the openings at both ends of the open slot 2;
[0045] At least the water-absorbing layer 4 covering the mouth of the open groove 2 .
[0046] The packaging cover pla...
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The invention relates to the technical field of displays, and discloses a packaging cover plate, an organic light-emitting display and a preparation method thereof, which are used to improve the packaging effect and prolong the service life of the organic light-emitting display. The packaging cover plate includes: a cover plate body with an opening groove; a cover plug for covering the openings at both ends of the opening groove; and a water-absorbing layer covering at least the notch of the opening groove. The packaging cover plate provided by the present invention can facilitate the passage of dry gas through the provided opening grooves, and the water-absorbing layer will absorb water vapor, and the passing-in dry gas will dry the water-absorbing layer, and the circulating flow of dry gas can take away the water-absorbing layer The water vapor and oxygen inside can reduce the damage of water vapor and oxygen to the device, and the packaging effect is better. The setting of the cover plug can block the opening groove when it does not need to be dried. The packaging cover plate provided by the present invention can repeatedly absorb Moisture can prolong the service life of the organic light emitting display.
Description
technical field [0001] The invention relates to the technical field of displays, in particular to a packaging cover plate, an organic light-emitting display and a preparation method thereof. Background technique [0002] Most of the organic substances in the light-emitting layer in the OLED (Organic Light-Emitting Diode, organic light-emitting) display are very sensitive to pollutants, oxygen and water vapor in the atmosphere. Oxygen and carbonyl compounds generated by the oxidation of the light-emitting layer are effective quenchers, which will significantly reduce the luminous quantum efficiency of the organic light-emitting display; water vapor will hydrolyze the organic layer compound and affect the conductivity, resulting in a significant increase in the stability of the organic light-emitting display. Reduced; the metal materials used to form the cathode of the organic light-emitting display are mostly chemically active metals, which are easily corroded in the air or o...
Claims
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IPC IPC(8): H01L51/52H01L51/56H01L27/32
CPCH10K71/00H10K59/8722H10K59/874H01L21/54H01L21/56H01L23/20H01L23/22H01L23/26H10K50/846H10K50/8426
Inventor 王琳琳
Owner BOE TECH GRP CO LTD