A kind of array substrate and its preparation method, display device
An array substrate and sub-pixel unit technology, which is applied in semiconductor/solid-state device manufacturing, organic semiconductor devices, semiconductor devices, etc., can solve the problem that the full-color display effect affects the yield of resonant cavity fabrication, limits the diversity of resonator cavity lengths, and affects the Resonator yield and other issues, to achieve the effect of achieving diversity, improving work reliability, and improving surface roughness
Active Publication Date: 2021-02-19
BOE TECH GRP CO LTD
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Problems solved by technology
However, it is difficult for ITO to form a thicker film layer, which limits the diversity of the cavity length of the resonator and limits the improvement of the full-color display effect.
Moreover, in the process of etching and forming ITO with different thicknesses, the problem of ITO etching residue or over-etching is prone to occur, which affects the yield of the resonant cavity.
To sum up, the existing technology of forming resonant cavities with different cavity lengths limits the improvement of full-color display effects and affects the production yield of resonant cavities
Method used
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Embodiment Construction
[0032] The embodiment of the present application provides an array substrate, such as figure 1 As shown, the array substrate has sub-pixel units with multiple luminescent colors; figure 1 The cross-sectional view of AA' in figure 2 As shown, each sub-pixel unit includes a resonant cavity 3 formed by a reflective layer 1 and a cathode 2 oppositely arranged, and the resonant cavity 3 further includes: an anode 4 located between the reflective layer 1 and the cathode 2 , and the luminescent functional layer 5 between the anode 4 and the cathode 2; as figure 1 , 2 The array substrate shown includes a red sub-pixel unit R, a green sub-pixel unit G and a blue sub-pixel unit B, figure 2 The middle light emitting functional layer 5 includes a red light emitting functional layer 6, a green light emitting functional layer 7 and a blue light emitting functional layer 8;
[0033] The resonant cavities 3 of the sub-pixel units of the same luminous color have the same length, and the ...
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The application discloses an array substrate, a preparation method thereof, and a display device, which are used to improve the display effect of display products and improve the manufacturing yield of resonant cavities. An array substrate provided in an embodiment of the present application, the array substrate has sub-pixel units of multiple light emitting colors; each sub-pixel unit includes a resonant cavity formed by a reflective layer and a cathode arranged oppositely, and the resonant cavity also includes : an anode located between the reflective layer and the cathode, and a light-emitting functional layer located between the anode and the cathode; the resonant cavities of the sub-pixel units of the same light-emitting color have the same length, and different light-emitting The resonant cavities of the sub-pixel units of different colors have different lengths; the anodes of the sub-pixel units of different light-emitting colors have the same thickness, and the thicknesses of the light-emitting functional layers of the sub-pixel units of different light-emitting colors are the same.
Description
technical field [0001] The present application relates to the field of display technology, in particular to an array substrate, a manufacturing method thereof, and a display device. Background technique [0002] Organic light-emitting diodes (Organic Light-Emitting Diodes, OLEDs) are widely used in display and other fields due to their advantages such as self-luminescence, high efficiency, low operating voltage, thinness, and flexibility. Generally, the emission band of organic light-emitting materials is relatively wide, and the full width at half maximum of the spectrum is about 100 nanometers, which has a certain gap for the saturated color required for full-color display. In order to improve the effect of full-color display, the method of introducing an optical resonant cavity into the device has been proved to be a good method. Compared with ordinary organic light-emitting devices, organic light-emitting devices with resonant cavities can obtain better monochromatic li...
Claims
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IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/35H10K59/1201H10K59/878H10K59/12H10K59/876H10K59/80518H10K71/231H10K2102/351H10K50/852H10K71/00
Inventor 王国英宋振
Owner BOE TECH GRP CO LTD