Organic light emitting diode display panel, preparation method of organic light emitting diode display panel, and mask
A technology of display panel and mask plate, which is applied to the photoplate making process of the patterned surface, optics, and originals for photomechanical processing, etc. It can solve the problems of low light output rate and display color change with viewing angle, etc., to improve light output High efficiency, solving the effect of display color changing with viewing angle, reducing absorption and reflection
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Embodiment 1
[0050] Please refer to image 3 , image 3 It is a schematic cross-sectional structure diagram of an OLED display panel according to Embodiment 1 of the present invention.
[0051]The OLED display panel of the embodiment of the present invention includes: a base substrate 301 , a reflective metal 302 , an anode 303 , a hole transport layer 304 , a light emitting layer 305 , an electron transport layer 306 , a cathode 307 and a light extraction layer 308 . Of course, in some other embodiments of the present invention, some of the above-mentioned layers are not necessary, such as the reflective metal 302, the light extraction layer 308, and the like.
[0052] The light-emitting layer 305 includes three sub-pixels (red sub-pixel 3051, green sub-pixel 3052 and blue sub-pixel 3053), of course, in some other embodiments of the present invention, the sub-pixel is not limited to red sub-pixel , green sub-pixels and blue sub-pixels, and the number of sub-pixels is not limited to thre...
Embodiment 2
[0061] Please refer to Figure 7-9 , Figure 7 is a schematic cross-sectional structure diagram of an OLED display panel according to Embodiment 2 of the present invention, Figure 8 for Figure 7 Schematic diagram of the structure of the cathode of the OLED display panel, Figure 9 for Figure 7 A top view of the cathode and light-emitting layers of an OLED display panel in .
[0062] The difference between the embodiment of the present invention and the embodiment is that each of the cathode units 3071 corresponds to three columns of the sub-pixels, and the width of each of the cathode units 3071 in the row direction is equal to the corresponding three columns of the sub-pixels in the row direction. width.
[0063] Of course, in some other embodiments of the present invention, the number of sub-pixel columns corresponding to each cathode unit 3071 may also be other numbers, such as two columns, four columns, and so on.
[0064] In the above embodiments, the width of ea...
Embodiment 3
[0066] Please refer to Figure 10 with Figure 11 , Figure 10 It is a schematic structural diagram of the cathode of the OLED display panel according to the third embodiment of the present invention. Figure 11 It is a top view of the cathode and the light emitting layer of the OLED display panel according to the third embodiment of the present invention.
[0067] from Figure 10 It can be seen from the figure that the multiple cathode units in the embodiment of the present invention are arranged in a matrix, and the matrix is an N×1 matrix, where N is a positive integer greater than 1.
[0068] from Figure 11 It can be seen from the figure that the red sub-pixels 3051, green sub-pixels 3052 and blue sub-pixels 3053 in the embodiment of the present invention are arranged at intervals along the row direction. The plurality of cathode units 3071 are arranged at intervals along the column direction of the display panel (ie, hereinafter referred to as the column direction...
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