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Organic Light Emitting Display Device

A light-emitting display device, an organic technology, applied in semiconductor devices, electric solid-state devices, semiconductor/solid-state device manufacturing, etc., can solve problems that cannot meet people's needs, display devices display low color gamut, etc., achieve high product yield, improve Color gamut area, the effect of enhancing the microcavity effect

Active Publication Date: 2020-05-01
YUNGU GUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the difficult problem that the display color gamut of the display device in the prior art is low and cannot meet people's needs

Method used

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Examples

Experimental program
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Embodiment 1

[0054] The invention provides an organic light emitting display device, such as figure 1 As shown, it includes a number of white organic light emitting diodes arranged in an array, and the filter layers 61 , 62 , and 63 are arranged on the light emitting surface of each organic light emitting diode correspondingly.

[0055] Specifically, it includes a first electrode layer, a light-emitting layer 3, and a second electrode layer formed on the substrate 10 (which may be a TFT array substrate with a driving array), and the first electrode layer includes a stacked total reflection layer 21 and an anode. layer 22, the anode layer 22 is set close to the light-emitting layer 3; the second electrode layer 4 is a transparent conductive layer, and a transflective layer 7 and a light extraction layer 8 are also arranged on it, and the organic light-emitting diode and the filter on the light surface thereof The optical layers 61 , 62 , 63 are hermetically packaged on the substrate 10 thro...

Embodiment 2

[0073] The present invention provides an organic light-emitting display device, the structure of which is the same as that of Embodiment 1, except that the thickness of the optical compensation layer is different.

[0074] For example, in this embodiment, the red optical compensation layer 51 is TPD with a thickness of 80 nm and a refractive index of 1.8; the green optical compensation layer 52 is TPD with a thickness of 200 nm and a refractive index of 1.8.

[0075] In this embodiment, the λ corresponding to the white organic light-emitting diode corresponding to the red light filter 1 =628nm,n 1 = 2, L 1 =1256nm;

[0076] The λ corresponding to the white organic light-emitting diode corresponding to the green light filter 2 =520nm,n 2 = 3, L 2 =1560nm;

[0077] Blue light filter corresponds to white organic light-emitting diode corresponds to λ 3 = 460nm, n 3 = 2, L 3 =920nm.

[0078] The device structure of the white organic light-emitting diode corresponding to t...

Embodiment 3

[0085] The present invention provides an organic light-emitting display device, the structure of which is the same as that of Embodiment 1, except that the thickness of the optical compensation layer is different.

[0086] For example: in this embodiment, the red light optical compensation layer 51 is made of Alq3 with a thickness of 110 nm and a refractive index of 1.9; the green light optical compensation layer 52 is made of Alq3 with a thickness of 120 nm and a refractive index of 1.9.

[0087] In this embodiment, the λ corresponding to the white organic light-emitting diode corresponding to the red light filter 1 =628nm,n 1 = 2, L 1 =1256nm;

[0088] The λ corresponding to the white organic light-emitting diode corresponding to the green light filter 2 =520nm,n 2 = 3, L 2 1560nm;

[0089] Blue light filter corresponds to white organic light-emitting diode corresponds to λ 3 = 460nm, n 3 = 2, L 3 =920nm.

[0090] The device structure of the white organic light-emi...

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Abstract

The invention belongs to the field of display technology, and in particular relates to an organic light-emitting display device. The organic light-emitting display device includes white organic light-emitting diodes arranged in an array, corresponding to the filter layer arranged on the light-emitting surface of each white light organic light-emitting diode; at least the filter layer corresponding to the organic The light-emitting diode has a microcavity structure; the organic light-emitting diode corresponding to the filter layer with a filter wavelength greater than 492nm is also provided with an optical compensation layer; the organic light-emitting display device realizes full-color display through a white light organic light-emitting diode plus a filter layer . Organic light-emitting diodes have a microcavity structure. On this basis, by setting an optical compensation layer between the second electrode layer and the filter layer to adjust the length of the microcavity, the optical path of light in the organic light-emitting display device is changed, and then increased. The number of times light interferes in the microcavity narrows the luminous spectrum and makes the light color more pure, which improves the color gamut of the organic light-emitting display device.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an organic light-emitting display device. Background technique [0002] Color gamut (Color Gamut), also known as color space, is a method of encoding a color, and also refers to the sum of colors that a display device can produce. It represents the specific situation that a color image can express colors. Among them, The types of color gamut are NTSC, sRGB, Adobe RGB, etc. In the early days of display industry development, the color gamut of cathode ray tube (CRT) and liquid crystal display (LCD) could only reach 72% NTSC (or even lower); with the development of display technology, LED lamp technology has changed from B-LED (approx. 72% NTSC) to GB-LED (85% NTSC), RGB-LED (95% NTSC); and the emergence of organic electroluminescent devices, the color gamut increased to 100% NTSC. [0003] Organic Light-Emitting Diode (OLED), as a current-mode light-emitting device, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L27/32
CPCH10K59/12H10K50/125H10K50/852H10K50/85H10K50/86
Inventor 李田田李维维田景文何麟李梦真周小康逄辉
Owner YUNGU GUAN TECH CO LTD
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