Pixel array and manufacturing method thereof, display panel and display device
A technology for pixel arrays and display panels, which is applied in semiconductor/solid-state device manufacturing, organic semiconductor devices, semiconductor devices, etc., can solve problems such as short-circuiting of pixels, over-etching of metal electrodes 13, and incomplete etching of second transparent electrodes 14, etc. Achieve the effect of avoiding pixel short circuit and improving production yield
Active Publication Date: 2018-12-14
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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[0006] In the prior art, the reflective electrode RE is usually formed by one etching, because the etching rate of the second transparent electrode 14 and the metal electrode 13 are very different (for example, the etching rate of ITO is The etching rate of Ag is ), the second transparent electrode 14 is prone to incomplete etching or the metal electrode 13 is over-etched, that is, within a certain range s (for example, s is about 2 μm) on the edge of the reflective electrode RE, there is no metal electrode 13 under the second transparent electrode 14 support
Thus, during photoresist stripping, as Figure 2A and Figure 2B As shown, the unsupported part of the second transparent electrode 14 is easy to partially fall off, when the dropped transparent electrode 15 remains on the reflective electrodes of two adjacent sub-pixels (the length L of the remaining transparent electrode 15 is greater than the pixel pitch d p ), causing the two sub-pixels to be short-circuited
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[0040] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.
[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0042] refer to Figure 3A and Figure 3B , Figure 3A A top view of some sub-pixels of a pixel array according to an embodiment of the present application is shown, Figure 3B for Figure 3A Sectional view along line EF.
[0043] Such as Figure 3A and Figure 3B As shown, the sub-pixel P ...
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The application discloses a pixel array, a manufacturing method thereof, a display panel and a display device. Each sub-pixel in the pixel array includes a reflective electrode disposed on the base substrate, and the reflective electrode includes a stacked first transparent electrode and a metal electrode, wherein the metal electrode is formed between the first transparent electrode and the base substrate; A transparent electrode includes a main body and a plurality of electrode blocks formed around the main body and spliced with the main body; the maximum length of the electrode block in a direction parallel to the base substrate is smaller than the minimum value of the pixel pitch. According to the solution of the present application, by splicing a plurality of electrode blocks around the main body of the first transparent electrode, and making the maximum length of the electrode blocks smaller than the minimum pixel pitch, the pixel short circuit caused by the remaining first transparent electrode is avoided, Thereby improving the production yield.
Description
technical field [0001] The present application generally relates to the field of display technology, and in particular relates to a pixel array and a manufacturing method thereof, a display panel and a display device. Background technique [0002] OLED (Organic Light Emitting Diode, Organic Light Emitting Diode), as an active light-emitting display device, has the advantages of high brightness, fast response, bendability, ultra-thin and no backlight, and has important applications in the field of display technology, especially becoming the most Display devices that have the potential to replace liquid crystal displays. [0003] According to the direction of light emission, OLED can be divided into bottom emission type and top emission type. In the bottom emission structure, the light is emitted from the direction of the substrate substrate, while in the top emission structure, the light is emitted from the top of the device. Among them, the TFT (Thin Film Transistor, Thin F...
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IPC IPC(8): H01L51/52H01L51/56H01L27/32
CPCH10K59/12H10K50/81H10K2102/3026H10K71/00
Inventor 张鹏苏聪艺
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD