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High-contrast OLED (Organic Light Emitting Diode) display device based on volume holographic principle

A high-contrast, volume holographic technology, applied in the field of OLED display

Inactive Publication Date: 2013-03-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the deficiencies of the prior art, that is, the OLED display device is due to the reflection of the ambient light by the electrodes in the structure of the OLED itself, resulting in contrast and recognizability. Lowering the problem

Method used

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  • High-contrast OLED (Organic Light Emitting Diode) display device based on volume holographic principle
  • High-contrast OLED (Organic Light Emitting Diode) display device based on volume holographic principle
  • High-contrast OLED (Organic Light Emitting Diode) display device based on volume holographic principle

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with embodiment and accompanying drawing

[0025] Such as figure 1 As shown, the high-contrast OLED display device based on the principle of volume holography is composed of a holographic light guide layer 1 and an OLED panel 2 . The holographic light guiding layer 1 is located above the light emitting surface of the OLED panel 2, and the holographic light guiding layer 1 can guide ambient light incident within a certain angle range to the non-visible area.

[0026] Such as figure 2 As shown, when the whole device is working, the outgoing light 3 emitted by the OLED panel 2 passes through the holographic light guide layer 1 , and the light in a certain visible area 4 can exit to form the outgoing light 7 . When the ambient light 5 outside the visible area 4 is incident on the holographic light guide layer 1, due to the diffraction of the holographic light guide layer 1, the ambient light 5 is guide...

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Abstract

The invention relates to a device of an OLED display field, and in particular relates to a high-contrast OLED (Organic Light Emitting Diode) display device based on a volume holographic principle. Aiming at the problems that the device contrast is reduced in ambient light and the imaging quality is influenced because of the reflection caused by the structure of the OLED device, the invention provides an idea that a light guide layer formed by using the volume holographic principle is combined with the OLED device, and the incident ambient light within a certain angle range is guided to an invisible range, so that the contrast of the device is prevented from being influenced by the ambient light which enters the OLED and generates reflection.

Description

technical field [0001] The invention relates to a device in the field of OLED display, in particular to a high-contrast OLED display device based on the principle of volume holography and a method for preparing related components therein. [0002] Background technique [0003] As an emerging light-emitting device, OLED has attracted more and more attention, and is expected to replace LCD as the core device in the next-generation display and lighting fields. An OLED mainly consists of at least two electrodes, and an electroluminescent layer located between the two electrodes. The electrodes of OLEDs are mainly composed of materials with high conductivity, such as metals and metal oxides. These materials also have high reflectivity. When OLEDs are used in the display field, there is inevitably a certain amount of ambient light. When ambient light is incident on these electrodes, it is usually accompanied by a certain amount of reflection, and the reflected light entering the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33
Inventor 熊源苏翼凯陈超平李潇何正红
Owner SHANGHAI JIAO TONG UNIV
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