Display device

Abstract

The invention discloses a display device which belongs to the field of display. The display device comprises a number of sub-pixel regions. Each sub-pixel region is corresponding to a color. The display device comprises a reflection interface, a photon conversion layer and a filter layer, wherein the reflection interface, the photon conversion layer and the filter layer are arranged in turn along a display light outgoing direction. In the sub-pixel region corresponding to a target color, a filter layer is used for reflecting light in a second wavelength range through light in a first wavelength range in the display light outgoing direction. The first wavelength range is a wavelength range corresponding to the target color. The second wavelength range comprises a visible light band beyond the first wavelength range. The reflection interface is used for reflecting light from the filter layer. The photon conversion layer is used for converting light in a third wavelength range in transmitted light into light in the first wavelength range. The third wavelength range is a pre-set wavelength range beyond the first wavelength range. The second wavelength range comprises the third wavelength range. According to the invention, the color conversion efficiency of the display device can be improved.

Description

Technical field [0001] The present invention relates to the field of display, in particular to a display device. Background technique [0002] The electroluminescent device is a self-luminous display device, which has attracted wide attention due to its advantages such as wide viewing angle, high contrast, and high response speed. With the development of the field of organic light-emitting materials, organic electroluminescent devices (such as Organic Light Emitting Diode, OLED) can achieve better brightness, driving voltage, response rate and Color gamut has become the mainstream of the current display market. [0003] In order to overcome the shortcomings of low luminous efficiency and short life of traditional blue OLED materials, current display manufacturers have turned to white light OLEDs with color filters (CF, also known as color filters) to achieve color display. [0004] However, although the luminous efficiency of the white light OLED material itself is already very hig...

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Problems solved by technology

[0003] In order to overcome the defects of low luminous efficiency and short lifespan of traditional blue OLED materials, current display manufacturers have turned to white OLEDs with color filters (Color Filter, CF, also known as color filters) to achieve color display.

[0004] However, although the luminous efficiency of the white OLED material itself is already very high, it will lose most of the light energy in the process of converting to each color (for example, the light extraction efficiency of traditional color filters is generally only about 33%), which has already It has gradually become a bottleneck restricting the overall performance improvement of white OLED products

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