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An OLED lighting panel and its auxiliary electrode

An auxiliary electrode and auxiliary electrode layer technology, which is applied in the field of OLED lighting, can solve the problems of large square resistance and uneven light emission of OLED lighting panels, and achieve the effects of low power consumption, good brightness uniformity, and low heat dissipation requirements.

Inactive Publication Date: 2016-06-22
SICHUAN CCO DISPLAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problem of uneven luminescence caused by large square resistance of OLED lighting panels, and propose an OLED lighting panel and an auxiliary electrode structure for improving its luminous uniformity

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  • An OLED lighting panel and its auxiliary electrode
  • An OLED lighting panel and its auxiliary electrode
  • An OLED lighting panel and its auxiliary electrode

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Embodiment Construction

[0014] The following embodiments of the present invention are designed according to the principles of the present invention, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] like image 3 , Figure 4 and Figure 5 As shown, an OLED lighting panel of this embodiment includes an ITO anode layer, an EML luminescent layer and a cathode layer, and the cathode layer includes strip electrodes distributed in parallel, and one end of the electrodes is connected to form an E-shape; the panel also includes a The enhanced auxiliary electrode layer of the cathode layer and the auxiliary electrode layer connected to the anode layer and extending into the EML light-emitting layer are uniformly distributed in parallel strips. The enhanced auxiliary electrode layer includes strip electrodes distributed in parallel, and one end of the electrode is connected to form an EML. Shaped, the E-shaped opening di...

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Abstract

The invention discloses an OLED illumination panel. A cathode layer of the OLED illumination panel comprises strip-shaped electrodes distributed in parallel, and one ends of the electrodes are connected to form an E shape. The OLED illumination panel further comprises a reinforcing type auxiliary electrode layer located at the cathode layer and auxiliary electrode layers which are evenly distributed in parallel in a strip shape mode, are connected with an anode layer and extend into an EML light-emitting layer, and the reinforcing type auxiliary electrode layer extends towards the EML light-emitting layer to be connected with the auxiliary electrode layers. The OLED illumination panel has the advantage that after the structure is adopted, and the light emitted by the light-emitting layer can be transmitted out more through ITO. According to the device structure of the OLED illumination panel, the light emitted by the light-emitting layer can not be all transmitted out as the light is shielded by an auxiliary electrode. Due to the fact that the auxiliary electrode is of a strip-shaped structure, the opening rate is higher than that of an existing panel of a net structure, the brightness of the OLED illumination panel is higher under the same driving conditions, and the difference value of the maximum resistance drop and the minimum resistance drop of each point on the panel is reduced.

Description

technical field [0001] The invention belongs to the technical field of OLED lighting, and relates to a luminous equalization technology of an OLED lighting panel, in particular to an OLED lighting panel and an auxiliary electrode structure for improving its luminous uniformity. Background technique [0002] OLED lighting has environmental affinity and can be made into a surface light source, so it has attracted much attention as a next-generation lighting device. The OLED lighting panel consists of a transparent anode ITO layer, a light-emitting layer EML and an aluminum (Al) cathode layer. Due to the large square resistance of the transparent anode, which is about 10Ω / □, the resistance drop (IR-DROP) in the central area of ​​the panel is serious, resulting in obvious uneven brightness of the lighting panel, especially in large-area lighting panels. serious. [0003] like figure 1 and figure 2 As shown, in order to improve the unevenness of the brightness of the lightin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52
Inventor 周刚
Owner SICHUAN CCO DISPLAY TECH