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OLED display panel

A display panel and light extraction technology, applied in the field of OLED display, can solve the problems of insufficient luminous brightness, OLED luminous life to be further improved, low luminous efficiency, etc., and achieve the effect of improving light color purity and improving light extraction efficiency.

Active Publication Date: 2018-10-02
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional OLED light extraction unit not only has the disadvantages of insufficient luminous brightness (low luminous efficiency), but also the color gamut of the RGB light it generates is not pure enough, and the luminous life of OLED needs to be further improved

Method used

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Embodiment 1

[0034] refer to figure 1 The OLED display panel provided in this embodiment includes a substrate 1 , an OLED pixel structure 2 , a polarizing layer 3 and a touch layer 4 which are stacked in sequence from bottom to top.

[0035] refer to figure 2 , image 3 The OLED pixel structure 2 includes a base 21 , a light emitting layer 101 and an encapsulation layer 103 , the light emitting layer 101 is disposed on the base 21 , the encapsulation layer 103 covers the surface of the light emitting layer 101 , and the encapsulation layer 103 is used to encapsulate the light emitting layer 101 . The light emitting layer 101 includes a pixel unit array 22 disposed on a substrate 21 . The pixel unit array 22 includes a plurality of pixel units 10 arranged in an array. The OLED display panel further includes at least one light extraction unit 102 . The light extraction unit 102 is disposed in the encapsulation layer 103 and corresponds to the pixel units 10 . Preferably, the OLED display...

Embodiment 2

[0055] In this embodiment, the pixel unit array 22 includes a plurality of display units 20, and each display unit 20 is formed by at least two adjacent pixel units 10 in each column of the pixel unit array 22, and at least two pixel units 10 are at least There is a pixel unit corresponding to the light extraction unit 102, for example, as figure 2 As shown, each column of the pixel unit array 22 includes 9 pixel units 10, and each display unit 20 includes 3 pixel units 10, then from top to bottom, 3 adjacent pixel units 10 form a display unit 20, and the pixel unit Each column of the array 22 includes three display units 20 .

[0056] The display units 20 located on the even-numbered columns in the pixel unit array 22 are arranged in the same manner, and the display units 20 located on the odd-numbered columns in the pixel unit array 22 are staggered from the display units 20 located on the even-numbered columns in the pixel unit array 22 . Wherein, the staggered distance ...

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Abstract

The invention provides an OLED display panel. The OLED display panel comprises a substrate, a light emitting layer and an encapsulating layer. The light emitting layer is arranged on the substrate. The encapsulating layer covers the surface of the light emitting layer. The light emitting layer comprises multiple pixel units which are arranged in an array manner. The OLED display panel also comprises at least one light extraction unit. The light extraction units are arranged in the encapsulating layer and correspond to the pixel units. According to the invention, the OLED display panel comprises at least one light extraction unit; the light extraction units are arranged in the encapsulating layer and correspond to the pixel units; and by increasing the light extraction units, light extraction efficiency can be improved, so photochromic purity is improved, displaying brightness is improved and service lifetime in light emitting is prolonged.

Description

technical field [0001] The invention relates to the technical field of OLED display, in particular to an OLED display panel. Background technique [0002] OLED is a device with characteristics such as self-illumination, wide viewing angle, fast response, wide color gamut, and foldability. Therefore, it has strong competitiveness in the display of the new era, and the current research on OLED light-emitting characteristics is still in progress. In progress. [0003] In terms of OLED light extraction, the light generated by the organic light-emitting layer can only be perceived by the viewing angle only through various thin-film dielectric layers and interfaces with different refractive indices (such as OLED boundaries, substrate interfaces), because of the limitations of this optical structure. Specifically, most of the light generated by the OLED is lost due to multiple reflections inside the device, and only a small part of the light (about 20%) can be finally perceived by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L27/32
CPCH10K59/00H10K59/121H10K59/122H10K50/11H10K50/85H10K50/84
Inventor 张锋朱小光王硕晟
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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