OLED display panel and OLED display device
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorBo Wang
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Abstract
The present disclosure provides an OLED display panel and a display device. The OLED display panel includes a substrate, a light-emitting functional layer disposed on the substrate, and at least two optical coupling layers disposed on the light-emitting functional layer, wherein refractive indices of the at least two optical coupling layers are gradually decreased in a direction in which light emits from the light-emitting functional layer. By adjusting an interaction between an angular width and a multiple-beam interference in the OLED display panel, efficiency of optical coupling is improved. Therefore, luminous efficiency of the OLED display panel is greatly improved. Brightness of the OLED display panel is increased, and a lifetime of the OLED display panel is extended.
Claims17
An organic light-emitting diode (OLED) display panel, comprising:
- a substrate;
- a light-emitting functional layer disposed on the substrate;
- and
- at least two optical coupling layers disposed on the light-emitting functional layer and disposed in a direction in which light emits from the light-emitting functional layer;
- wherein refractive indices of the at least two optical coupling layers are gradually decreased in the direction in which light emits from the light-emitting functional layer;
- and
- thicknesses of the at least two optical coupling layers are gradually decreased in the direction in which light emits from the light-emitting functional layer.
An organic light-emitting diode (OLED) display device, comprising:
- an OLED display panel;
- wherein the OLED display panel comprises a substrate, a light-emitting functional layer disposed on the substrate, and at least two optical coupling layers disposed on the light-emitting functional layer and disposed in a direction in which light emits from the light-emitting functional layer;
- wherein refractive indices of the at least two optical coupling layers are gradually decreased in the direction in which light emits from the light-emitting functional layer;
- and
- thicknesses of the at least two optical coupling layers are gradually decreased in the direction in which light emits from the light-emitting functional layer.
An organic light-emitting diode (OLED) display panel, comprising:
- a substrate;
- a light-emitting functional layer disposed on the substrate;
- and
- at least two optical coupling layers disposed on the light-emitting functional layer and disposed in a direction in which light emits from the light-emitting functional layer;
- wherein refractive indices of the at least two optical coupling layers are gradually increased in the direction in which light emits from the light-emitting functional layer;
- and
- thicknesses of the at least two optical coupling layers are gradually decreased in the direction in which light emits from the light-emitting functional layer.
Dependencies are inferred from the claim text.