White-light OLED device driven by AC
An AC drive, white light technology, applied in the field of white light OLED devices, to achieve the effect of improving brightness
Active Publication Date: 2018-06-05
武汉华美晨曦光电有限责任公司
View PDF3 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The OLED surface light-emitting device driven by an AC power source disclosed in the prior art has a DC-driven light-emitting unit, and the structural design makes the two light-emitting units alternately emit light in two half-cycles of the AC power source, so as to achieve the full power of the OLED in AC. It emits light periodically and has no stroboscopic purpose; however, its performance in terms of luminous brightness during this period needs to be further improved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention 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 the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0022] Such as figure 1 Shown is a cross-sectional view of an embodiment of an AC-driven white OLED device of the present invention. The OLED device provided in the embodiment is a laminated structure with two independent AC light-emitting units 210 and 310. Light-emitting unit; specifically, it includes a conductive anode sequentially deposited on the light-emitting surface, a sandwich structu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Bandgap width | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a white-light OLED device driven by AC. The white-light OLED device comprises the components of a conductive anode, a sandwich structure which is composed of two independent AClight emitting units and an electrode connecting layer arranged between the two AC light emitting units, and a conductive cathode, wherein the conductive anode, the sandwich structure and the conductive cathode are successively deposited on a light outlet surface. Each of the two AC light emitting units comprise a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer, wherein the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer and the electron injection layer aresuccessively deposited. Each AC light emitting unit further comprises one or two dielectric layers. Through applying an AC signal among the conductive anode, the electrode connecting layer and the conductive cathode, the two independent AC light emitting units are driven. The positive half period of the AC signal drives one AC light emitting unit, and the negative half period of the AC signal drives the other AC light emitting unit. Relative to an OLED surface light emitting device which is disclosed in prior art and driven by an AC power supply and comprises the light emitting unit that is aDC light emitting unit, the white-light OLED device driven by AC current further improves brightness, stability and service life of the white-light OLED device.
Description
technical field [0001] The invention belongs to the technical field of organic light-emitting diode (OLED) lighting, and relates to a light-emitting unit of an OLED lighting panel, in particular to an AC-driven white light OLED device. Background technique [0002] In recent years, with the development of semiconductor lighting technology, various light-emitting device structures have been proposed, and AC signal-driven OLED device technology is one of them. By applying an AC signal to the OLED device, the brightness of the OLED device will be different under the AC signal at different frequencies, and at a specific frequency, the brightness of the OLED device reaches a maximum value. At the same time, it is also found that the OLED device driven by the AC signal has better brightness and longer stability than the OLED device driven by the DC signal. [0003] The OLED surface light-emitting device driven by an AC power source disclosed in the prior art has a DC-driven light...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/11H10K50/15H10K50/16H10K71/00
Inventor 王亮刘纪文江创
Owner 武汉华美晨曦光电有限责任公司