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Novel transparent OLED (Organic Light Emitting Diode) display screen and method for manufacturing same

A display screen and transparent technology, applied in the display screen field, can solve the problems of excessive cathode resistance, poor display quality and poor reliability of OLED display screen, so as to improve the transmittance, improve the display quality and reliability, and prolong the service life. Effect

Inactive Publication Date: 2011-05-18
TRULY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional transparent OLED can only get about 50% to 60% transmittance, and because the metal cathode is made very thin, the cathode resistance is too large and the cathode is in poor contact with the bottom cathode bonding block, which makes the OLED display display Poor quality, poor reliability and short service life

Method used

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  • Novel transparent OLED (Organic Light Emitting Diode) display screen and method for manufacturing same
  • Novel transparent OLED (Organic Light Emitting Diode) display screen and method for manufacturing same
  • Novel transparent OLED (Organic Light Emitting Diode) display screen and method for manufacturing same

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Embodiment 1

[0035] see figure 2 , image 3 , Figure 4 , the novel transparent OLED display in this embodiment includes a substrate glass 1, an anode 2, an organic layer 3, a cathode 4, and a passivation layer 5 arranged on the substrate glass 1 in sequence, and the cathode 4 includes a first layer overlapping up and down The cathode 41 and the second layer cathode 42 are partially provided with an insulating layer 10 between the first layer cathode 41 and the anode 2, and the second layer cathode 42 is located above the insulating layer 10; The lower part is provided with a cavity, and a cathode bonding block 12 is provided in the cavity.

[0036] Wherein, the organic layer 3 includes a hole injection layer 31 , a hole transport layer 32 , an organic light emitting layer 33 , an electron transport layer 34 , and an electron injection layer 35 .

[0037] Wherein, the cathode 4 includes a first layer of cathode 41 and a second layer of cathode 42 connected to each other, wherein the fi...

Embodiment 2

[0040] see Figure 5 The difference between the present embodiment and the first embodiment is that the insulating layer 10 is not provided above the anode 2, and the cathode 42 of the second layer is in the part of the light-emitting region, and the insulating layer is not provided below it, so the organic layer in this region will emit light, but This area can be seen from the front, but not from the back, and this area only occupies a small width of the entire pixel light-emitting area, so it has little effect on the overall transparent display effect.

[0041] The rest are consistent with the embodiment and will not be repeated here.

[0042] The manufacturing method of the novel transparent OLED display screen of the present invention is further described below, and the manufacturing method of the novel transparent OLED display screen of the present invention includes the following steps specifically as follows:

[0043] Prepare anode, organic layer, first-layer cathode,...

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Abstract

The invention discloses a novel transparent OLED (Organic Light Emitting Diode) display screen, comprising substrate glass, an anode, an organic layer, cathodes, a passivation layer and an insulating layer. The anode is arranged on the substrate glass. The cathodes comprise a first-layer cathode and a second-layer cathode, wherein the first-layer cathode at least covers the whole luminous zone, and the second-layer cathode covers the edge of the luminous zone and a nonluminous and is connected with the first-layer cathode. Because the cathodes are arranged in two layers, the first-layer cathode is thinner than the second-layer cathode, and the second-layer cathode only covers a small part of the luminous zone, the luminous effect can not be affected. Because the first-layer cathode is thinner, the transmittance of the cathodes can be greatly improved. Because the second-layer cathode is thicker, the display quality and reliability of the transparent OLED can be improved, and the service life can be prolonged.

Description

technical field [0001] The invention relates to a display screen, in particular to a novel transparent OLED display screen and a manufacturing method thereof. Background technique [0002] Organic electroluminescence display (OLED for short) is a new type of flat-panel display at present, because it has many advantages such as active light emission, high contrast ratio, can be thinned, fast response speed, etc., it is recognized as the main force of the next generation display. OLED mainly includes a glass substrate, a transparent electrode, an organic light-emitting layer and a metal electrode. The light-emitting principle of the OLED display is: the transparent electrode is used as the anode, and the metal electrode is used as the cathode. When an appropriate voltage is applied between the two electrodes, holes and electrons are injected into the organic light-emitting layer from the interface of the transparent electrode and the metal electrode to recombine and form glow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
Inventor 柯贤军蔡晓义赵云苏君海何基强
Owner TRULY SEMICON