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Pixel structure, display panel and preparation method thereof, and display device

A technology of pixel structure and display panel, applied in the field of display device, display panel and its manufacture, pixel structure, can solve the problems of low color purity of light, poor stability of light-emitting layer, etc.

Active Publication Date: 2018-12-21
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a pixel structure, a display panel and its manufacturing method, and a display device to solve the problems of low color purity of light and poor stability of the light-emitting layer in an OLED display device in which an organic material is used as a light-emitting layer

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  • Pixel structure, display panel and preparation method thereof, and display device
  • Pixel structure, display panel and preparation method thereof, and display device
  • Pixel structure, display panel and preparation method thereof, and display device

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Experimental program
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Embodiment 1

[0046] refer to figure 1 , shows a schematic cross-sectional view of a pixel structure according to Embodiment 1 of the present invention. The pixel structure may include a substrate 10 , an inorganic photoluminescent material layer 20 , a first electrode layer 30 , an organic light emitting material layer 40 , an excitation layer 50 and a second electrode layer 60 . Wherein, the inorganic photoluminescent material layer 20 is formed on the substrate 10, the first electrode layer 30 covers the inorganic photoluminescent material layer 20, and the organic luminescent material layer 40 and the excitation layer 50 are arranged on the first electrode layer 30 in the same layer. Above, the orthographic projection of the excitation layer 50 on the substrate 10 and the orthographic projection of the inorganic photoluminescent material layer 20 on the substrate 10 at least partially overlap, and the excitation layer 50 can be used to excite the inorganic photoluminescent material laye...

Embodiment 2

[0060] refer to Figure 5 , showing a schematic cross-sectional view of a display panel in which the organic light-emitting material layer is a frame-shaped structure, Figure 5 is in figure 2 Obtained by intercepting the AA' cross-section in . refer to Figure 6 , showing a schematic cross-sectional view of a display panel with a U-shaped organic light-emitting material layer, Figure 6 is in Figure 4 Obtained by intercepting the BB' section in

[0061] Figure 5 or Figure 6 The shown display panel may include a pixel structure, as well as an isolation column 70 and an encapsulation layer 80 . Wherein, the isolation column 70 is located on the first electrode layer 30 between two adjacent pixel structures, thereby isolating the second electrode layer 60 in the two adjacent pixel structures. The encapsulation layer 80 encapsulates the pixel structure and the isolation pillars 70, wherein the edge of the encapsulation layer 80 can be bonded to the substrate of the no...

Embodiment 3

[0065] refer to Figure 7 , shows a flow chart of a method for manufacturing a display panel according to Embodiment 3 of the present invention. The method for manufacturing a display panel according to an embodiment of the present invention includes the following steps:

[0066] Step 701: Provide a substrate.

[0067] In the embodiment of the present invention, the substrate may specifically be a transparent glass substrate.

[0068] Step 702: Form an inorganic photoluminescent material layer on the substrate.

[0069] In the embodiment of the present invention, the inorganic photoluminescent material layer can be formed on the substrate by a patterning process. Specifically, the inorganic photoluminescent material layer can be formed by various methods such as deposition, coating, and sputtering. The patterning process is usually Processes such as photoresist coating, exposure, development, etching, and photoresist stripping may be included.

[0070] Step 703: forming a ...

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Abstract

The invention provides a pixel structure, a display panel and a manufacturing method thereof, and a display device, which relate to the technical field of display. Wherein the pixel structure comprises a substrate, an inorganic photoluminescent material layer formed on a substrate, a first electrode layer overlaid on the inorganic photoluminescent material layer, an organic luminescent material layer and an excitation layer arranged on the same layer on the first electrode layer, and a second electrode layer overlaid on the organic luminescent material layer and the excitation layer, wherein the excitation layer is used for exciting the inorganic photoluminescent material layer to emit light. In the embodiment of the invention, the excitation layer can emit ultraviolet light when energized, and the inorganic photoluminescent material layer can emit light corresponding to the color of the pixel structure under the excitation of ultraviolet light. As the emission spectrum of the inorganic photoluminescent material is narrow and the optical property are not easily influenced by the water and oxygen, the color purity of the display and the stability of the whole luminescent layer can be improved by replacing part of the organic luminescent material layer with the inorganic photoluminescent material layer.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel structure, a display panel, a manufacturing method thereof, and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) display device is a research hotspot in the field of electroluminescence display due to its advantages of self-luminescence and low energy consumption. Currently, the most common OLED display devices in which RGB sub-pixels emit light independently usually use organic materials as materials for the light-emitting layer. However, organic materials emit a wider spectrum, so the color purity of the emitted light is lower. In addition, the optical properties of the organic material are easily affected by water and oxygen, so the stability is poor, and the service life of the OLED display device is easily shortened. Contents of the invention [0003] The invention provides a pixel structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/125H10K2102/00H10K59/8723H10K59/35H10K59/38H10K59/121H10K71/00
Inventor 齐智坚杨妮李云泽许亨艺李翠莲梁雪波
Owner BOE TECH GRP CO LTD