Accordingly, the disclosure will not be limited to the specific embodiments to be disclosed below. However the disclosure can be embodied in various different embodiments from those described here, and those skilled in the art can generalize the embodiments similarly without departing from the spirit of the disclosure. It shall be noted that specific details will be set forth in the following description to facilitate thorough understanding of the disclosure. The drawings of the disclosure are merely intended to illustrate relative positional relationships, and the thickness of some components has been exaggerated for the sake of convenient understanding, but the thickness in the drawings may not represent any proportional relationship between the thickness in the drawings, and the actual thickness. All the words as referred to in the disclosure to represent positions and directions will be described with reference to the drawings by way of an example, but can also be modified as needed, and all the modifications thereto shall fall into the scope of the disclosure as claimed. The same reference numerals in the drawings represent the same or similar components, so a repeated description thereof will be omitted here. On the contrary, these embodiments are provided to make the disclosure more comprehensive and complete, and to convey the idea of the exemplary embodiments fully to those skilled in the art. However the disclosure can be embodied in various forms, and shall not be construed as being limited to the exemplary embodiments described here. In order to make the objects, features, and advantages above of the disclosure more apparent and easily understood, the disclosure will be further described below with reference to the drawings and the embodiments thereof. This light-emission mode is currently applicable to various OLED displays. The third color display mode is a light-emission mode in which white light is emitted, and color filters are used, where like a liquid crystal display panel, white-light OLEDs operate as a backlight, and the white light is further filtered in respective colors by the color filters, so that a color image is displayed and there is a much lower cost in this light-emission mode than the other two light-emission modes above. The second color display mode is a light-emission mode in which one color is converted into another, where light is emitted in respective colors using blue-light OLEDs together with an array of light color conversion films, but it is difficult to develop the light color conversion films in this light-emission mode. The first color display mode is a color mode in which sub-pixels in respective colors light emit separately, where pixels in three primary colors are arranged through vapor deposition using a fine metal mask, so there is a high cost, but it is also difficult to align the pixels with the mask, and to select the material of the mask. At present, there are the following several color display modes for the OLED display device.
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