CN201868435U

CN201868435U - OLED (organic light emitting diode) lighting panel

Info

Publication number: CN201868435U
Application number: CN2010205770240U
Authority: CN
Inventors: 洪宣杓; 车炯坤
Original assignee: Sichuan CCO Display Technology Co Ltd
Current assignee: Sichuan CCO Display Technology Co Ltd
Priority date: 2010-10-26
Filing date: 2010-10-26
Publication date: 2011-06-15
Anticipated expiration: 2020-10-26

Abstract

The utility model discloses an OLED (organic light emitting diode) lighting panel which can enable the shining of whole area and improve brightness uniformity. The lighting panel comprises an anode layer and a cathode layer, wherein a lighting layer and auxiliary electrodes are arranged between the anode layer and the cathode layer; the anode layer consists of transparent anodes and the cathode layer consists of metal cathodes; the auxiliary electrodes are communicated with the transparent anodes and made of transparent conductive materials; the transparent conductive materials for the manufacture of the auxiliary electrodes are transparent metals; and the auxiliary electrodes are formed by transparent metal layers plated on the anode layer in a photolithographic manner. The OLED panel provided by the utility model can enable the whole area to keep shining while reducing the anode impedance and improving the brightness uniformity of the panel; meanwhile, the distribution density and width of the auxiliary electrodes can be determined according to the voltages of different parts of the lighting panel, and the brightness uniformity of the panel can be further improved.

Description

The OLED illumination panel

Technical field

The utility model relates to a kind of OLED illumination panel, belongs to illumination panel manufacturing technology field.

Background technology

Existing OLED illumination panel, by the transparent anode layer, luminescent layer and metallic cathode layer are formed, described anode layer is made of transparent anode, and described cathode layer is made of metallic cathode, because the resistance of transparent anode side is bigger, be about 10 Ω/, voltage drop is serious, and general OLED face is luminous to be obvious more from the place voltage drop phenomenon far away more of power supply supply, causes illumination panel that tangible brightness irregularities phenomenon is arranged.For improving the inhomogeneities of illumination panel brightness, people have proposed a lot of schemes, basically all be on the transparent anode layer, to increase to be communicated with described transparent anode, and the auxiliary electrode that is interconnected between self because side's resistance of auxiliary electrode is less, is about 1 Ω/, current voltage drop reduces, during energising, the impedance and the current voltage drop of the transparent anode of panel are reduced, brightness uniformity is improved.

In the prior art, the arrangement of the auxiliary electrode that increases is generally criss-cross and arranges, be that auxiliary electrode is the network structure that is interconnected on the transparent anode layer, its underpart is communicated with described transparent anode, top is positioned at luminescent layer, so whole auxiliary electrode is less along the thickness of thickness of illuminated direction, the effect of improving of counter plate brightness uniformity is subjected to bigger restriction; In addition, because auxiliary electrode is opaque, light can't pass, therefore increase auxiliary electrode after, be positioned at the light that the luminescent layer of auxiliary electrode top sends and can't enter the transparent anode layer.

The utility model content

Will improve then its light-emitting area deficiency that must reduce of brightness uniformity in order to overcome existing OLED illumination panel, technical problem to be solved in the utility model provides a kind of OLED illumination panel that can also can improve brightness uniformity the luminous while of gross area.

The technical scheme that its technical problem that solves the utility model adopts is: the OLED illumination panel, comprise anode layer, cathode layer, luminescent layer and auxiliary electrode are all between anode layer and cathode layer, described anode layer is made of transparent anode, described cathode layer is made of metallic cathode, described auxiliary electrode is communicated with described transparent anode, and described auxiliary electrode is made of transparent conductive material.

The described transparent conductive material that is used to make auxiliary electrode is a transparent metal.

Described auxiliary electrical polar system forms by the transparent metal layer that photoetching is plated on the anode layer.

The beneficial effects of the utility model are: auxiliary electrode is also made of transparent material, it is luminous to improve the inhomogeneity gross area that keeps simultaneously of panel luminance reducing anode impedance, and, can determine the arrange density and the width of auxiliary electrode according to the voltage drop of different parts on the illumination panel, with the further panel luminance uniformity of improving.

Description of drawings

Fig. 1 is the structural representation of the utility model OLED illumination panel.

Fig. 2 is that auxiliary electrode forms schematic diagram.

Be labeled as 1-cathode layer, 2-luminescent layer, 3-auxiliary electrode, 4-anode layer, 5-transparent metal layer among the figure.

Frame of broken lines is depicted as photoetching and removes part among Fig. 2.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified.

As depicted in figs. 1 and 2,0LED illumination panel of the present utility model comprises anode layer 4, cathode layer 1, luminescent layer 2 and auxiliary electrode 3 are all between anode layer 4 and cathode layer 1, described anode layer 4 is made of transparent anode, described cathode layer 1 is made of metallic cathode, described auxiliary electrode 3 is communicated with described transparent anode, and described auxiliary electrode 3 usefulness transparent conductive materials are made.

The auxiliary electrode of arranging on transparent anode also uses transparent conductive material to make, and can reduce anode impedance and improve the panel luminance uniformity, and, keep monoblock illumination panel gross area luminous.

Can determine the arrange density and the width of auxiliary electrode according to the voltage drop of different parts on the illumination panel, with the further panel luminance uniformity of improving.

Usually, the described transparent conductive material that is used to make auxiliary electrode 3 is a transparent metal.

As shown in Figure 2, make for convenient, described auxiliary electrode 3 is that the transparent metal layer 5 that is plated on the anode layer 4 by photoetching forms.

Claims

1.OLED illumination panel, comprise anode layer (4), cathode layer (1), luminescent layer (2) and auxiliary electrode (3) all are positioned between anode layer (4) and the cathode layer (1), described anode layer (4) is made of transparent anode, described cathode layer (1) is made of metallic cathode, described auxiliary electrode (3) is communicated with described transparent anode, it is characterized in that: described auxiliary electrode (3) is made of transparent conductive material.

2. OLED illumination panel as claimed in claim 1 is characterized in that: the described transparent conductive material that is used to make auxiliary electrode (3) is a transparent metal.

3. OLED illumination panel as claimed in claim 2 is characterized in that: described auxiliary electrode (3) is that the transparent metal layer (5) that is plated on the anode layer (4) by photoetching forms.