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Electroluminescent display panel

An electroluminescent display and electroluminescent element technology, applied in circuits, electrical components, electro-solid devices, etc., can solve problems such as component damage, and achieve the effect of avoiding diffusion and reducing damage

Active Publication Date: 2011-08-17
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when forming the buffer layer, organic layer and inorganic layer, pinholes (pin holes) will inevitably be generated in each film layer, so that water vapor and oxygen can contact the electroluminescent element through these pinholes.
In addition, because moisture and oxygen in the organic layer are very easy to diffuse to areas other than pinholes, it often causes large-area component damage

Method used

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  • Electroluminescent display panel
  • Electroluminescent display panel
  • Electroluminescent display panel

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] Figure 1A It is a schematic top view of an electroluminescent display panel according to an embodiment of the present invention. Figure 1B for along Figure 1A The schematic cross-sectional view of the electroluminescent display panel shown by the line I-I' in . Please also refer to Figure 1A and Figure 1B The electroluminescent display panel 10 includes an active element array substrate 100 , a pixel definition layer 102 , an electroluminescent element layer 104 , an electrode layer 106 and a protective layer 108 . The material of the active device array substrate 100 is, for example, glass, plastic or other suitable materials. The active device array substrate 100 has pixel electrodes 100a arranged in an array. The material of the pixel electrode 100 a is, for example, indium tin oxide (ITO) or indium zinc oxide (IZO). In addition, the active device array substrate 100 also has scan lines 100b, data lines 100c and active devices (not shown for clarity of the dr...

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Abstract

The invention discloses an electroluminescent display panel which comprises an active element array base plate, a pixel defining layer, electroluminescent element layers, an electrode layer and a protecting layer, wherein the base plate is provided with pixel electrodes; the pixel defining layer positioned on the base plate is provided with openings; a pixel electrode is respectively exposed out of each opening; the electroluminescent element layers are positioned in the openings; all the electroluminescent element layers are respectively positioned on the pixel electrodes; the electrode layer is positioned on the pixel defining layer and the electroluminescent element layers; the protecting layer comprising a buffer layer, a first encapsulating film and a second encapsulating film is positioned on the electrode layer; the buffer layer covers the pixel defining layer and the electroluminescent element layers; the first encapsulating film only partially covers the buffer layer; the first encapsulating film comprises island-shaped patterns which are positioned on the pixel electrodes; and the second encapsulating film covers the buffer layer and the first encapsulating film.

Description

technical field [0001] The present invention relates to a display panel, and more particularly to an electroluminescent display panel. Background technique [0002] With the advancement of display technology, people can make life more convenient with the assistance of display devices. In order to achieve light and thin characteristics of displays, flat panel displays have become the current mainstream. [0003] Among various flat-panel displays, the active matrix electroluminescent display (AMLED) display has the advantages of wide viewing angle, good color contrast effect, light and thin, fast response speed and low cost, so it is very suitable for portable video products (Notebook computers, PDAs, mobile phones, etc.), especially large display devices such as TVs, etc. [0004] In a general active matrix electroluminescent display, the electroluminescent element is usually covered with a buffer layer, and the buffer layer is sequentially covered with an organic layer and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L27/15H01L51/52H01L33/52G09F9/33
Inventor 吴文豪
Owner AU OPTRONICS CORP