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Light-emitting element and display device

A light-emitting element and light-emitting layer technology, which is applied in the field of display devices and light-emitting elements, can solve the problems of low grayscale reproducibility of OLED and QLED, and achieve the effect of suppressing brightness deviation

Pending Publication Date: 2021-09-24
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, OLED and QLED have the problem of lack of reproducibility of low grayscale

Method used

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  • Light-emitting element and display device
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  • Light-emitting element and display device

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Experimental program
Comparison scheme
Effect test

no. 1 approach 〕

[0056] figure 1 It is a diagram showing a schematic configuration of the display device 1 according to the first embodiment.

[0057] The display device 1 includes a light-emitting element array 2 provided with light-emitting elements (not shown) on an active matrix substrate (not shown), a scan line driver (Scan driver) 3, a data line driver (Data driver) 4, and an image Timing controller 5 (circuit).

[0058] The input image signal is input to the image timing controller 5, and the lighting mode selection signal is output from the image timing controller 5 to the light emitting element array 2, and the scanning line driver control signal is output from the image timing controller 5 to the scanning line driver 3, and the image timing controller 5 outputs the scanning line driver control signal from the image timing controller 5. The timing controller 5 outputs a data line driver control signal to the data line driver 4 .

[0059] The scan line driver 3 switches the require...

no. 2 approach 〕

[0123] Below, based on Figure 11 to Figure 16 A second embodiment of the present invention will be described. The light-emitting elements included in the light-emitting element arrays 32 and 52 of this embodiment are different from the first embodiment in that the area of ​​the first region L1 and the area of ​​the fourth region L4 are different from those of the first embodiment. described in . For convenience of description, members having the same functions as those shown in the drawings of the first embodiment are given the same reference numerals, and description thereof will be omitted.

[0124] Figure 11 It is a diagram showing a schematic configuration of the light emitting element array 32 . In addition, in Figure 11 In the drawing, only one light emitting element provided on the active matrix substrate 19 which is a part of the light emitting element array 32 including a plurality of light emitting elements is shown.

[0125] Figure 12 (a) is a top view of ...

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Abstract

This light-emitting element includes a light-emitting layer (16), an upper electrode which is provided on one side of the light-emitting layer (16), and a lower electrode which is provided on the other side of the light-emitting layer (16) that is opposite the one side, wherein the lower electrode is composed of a first electrode (6C) and a second electrode (6D) which has a larger area than the first electrode (6C), the first electrode (6C) and the second electrode (6D) having a first gap therebetween, and the upper electrode is composed of a third electrode (6A) which faces the first electrode (6C) and the second electrode (6D), and a fourth electrode (6B) which faces the second electrode (6D) and has a smaller area than the third electrode (6A), the third electrode (6A) and the fourth electrode (6B) having a second gap therebetween.

Description

technical field [0001] The present invention relates to a light emitting element and a display device including the light emitting element. Background technique [0002] In recent years, various display devices equipped with light-emitting elements have been developed. In particular, displays equipped with OLEDs (Organic Light Emitting Diode: Organic Light Emitting Diodes) have been developed in order to achieve low power consumption, thinner thickness, and higher image quality. Devices and display devices equipped with inorganic light emitting diodes or QLEDs (Quantum dot Light Emitting Diodes: quantum dot light emitting diodes) have attracted attention. [0003] On the other hand, OLED and QLED have a problem of lack of reproducibility of low gradation. [0004] In particular, in QLEDs, since there is a sharp change point in the luminance characteristics with respect to voltage, it is difficult to express luminance on the low gray scale side, and an attempt has been made ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50G09F9/30H01L27/32H05B33/12H05B33/14H05B33/26
CPCG09F9/30H05B33/12H05B33/14H05B33/26G09G2320/0238G09G2320/0233G09G3/3275G09G3/32G09G3/2007G09G3/207G09G2300/0426H10K50/813H10K50/822G09G2310/027H10K50/15H10K50/16
Inventor 井上尚人鸟殿智惠
Owner SHARP KK
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