OLED display panel and preparation method of OLED display panel
A display panel and display area technology, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., and can solve problems such as unstable sealing of moisture-absorbing glue stations, sealing of residual frame glue, water and oxygen intrusion, etc.
Pending Publication Date: 2022-06-03
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0004] In the encapsulation method of frame glue and filler glue, the frame glue material is generally pasted on the inorganic film, but in the process of making the backplane, it is necessary to make a flat layer, which is still an inorganic material, and is easy to be attached to the frame glue material Residues appear on the inorganic film in the joint area, which makes the sealing performance of the frame adhesive poor
In addition, in order to ensure the effect of absorbing water and oxygen, there will be a hygroscopic glue between the frame glue and the filling glue, but the hygroscopic glue is unstable on the flat layer and has poor sealing performance, which will easily lead to water and oxygen intrusion
Method used
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[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of this application.
[0041] In the description of this application, it is to be understood that the terms "center", "length", "width", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the...
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The invention discloses an OLED (Organic Light Emitting Diode) display panel and a preparation method of the OLED display panel. The OLED display panel comprises a substrate, and the substrate comprises a display area and a frame area arranged on the peripheral side of the display area. The flat layer is arranged on the substrate; the pixel definition layer is arranged on the flat layer, and the pixel definition layer is provided with a first convex part in the frame area; the cover plate is located on the side, provided with the pixel definition layer, of the substrate and is opposite to the substrate; the first packaging part extends from the display area to the frame area, and the first packaging part at least covers part of the first protruding part; and the second packaging part is arranged around the first packaging part. According to the invention, the first protruding part is arranged in the frame area, and then the first packaging part covers the first protruding part, so that the first packaging part can stably stand above the flat layer and does not incline, thereby improving the sealing performance of the packaging layer, and avoiding the invasion of water and oxygen.
Description
technical field [0001] The present application relates to the field of display technology, and in particular, to an OLED display panel and a method for preparing the OLED display panel. Background technique [0002] OLED is a current-type light-emitting device, and OLED mainly includes anode, cathode and functional layers of organic materials. The main working principle of OLED is that the organic material functional layer emits light through carrier injection and recombination under the driving of the electric field formed by the anode and the cathode. [0003] The existing OLED display panel includes: a TFT array substrate including a thin film transistor (Thin Film Transistor, TFT for short) driving circuit, and a plurality of OLED display devices arranged on the TFT array substrate, each OLED display device is composed of a corresponding TFT. control. OLED packaging generally uses metal film packaging to block water and oxygen intrusion, and its blocking effect is good...
Claims
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IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/122H10K59/124H10K50/8426H10K50/846H10K71/00H10K59/00H10K59/8722H10K59/1201H10K59/873
Inventor 章仟益周星宇
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD