Display device

A display device and electrode technology, which is applied to semiconductor devices, electrical components, circuits, etc., can solve the problems of performance deterioration of display components, uneven ends of functional layers, etc.

Pending Publication Date: 2022-07-29
JAPAN DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, when forming an organic layer in which a plurality of functional layers are laminated, there is a possibility that the edges of the functional layers are not aligned at the peripheral portion of the organic layer, which may degrade the performance of the display element.

Method used

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Experimental program
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Effect test

no. 1 approach

[0044] figure 1 It is a figure which shows an example of a structure of the display apparatus DSP concerning 1st Embodiment. The display device DSP has a display area DA on which an image is displayed, and a peripheral area SA outside the display area DA on the insulating base material 10 . The substrate 10 may be glass or a flexible resin film.

[0045] The display area DA includes a plurality of pixels PX arranged in a matrix along the first direction X and the second direction Y. The pixel PX includes a plurality of sub-pixels SP. In one example, the pixel PX includes a red sub-pixel SP1, a green sub-pixel SP2, and a blue sub-pixel SP3. In addition, the pixel PX may include four or more sub-pixels to which sub-pixels of other colors such as white are added, in addition to the sub-pixels of the above three colors.

[0046] The sub-pixel SP includes a pixel circuit 1 and a display element 20 driven by the pixel circuit 1 . The pixel circuit 1 includes a pixel switch 2 , ...

no. 2 approach

[0097] Figure 15 It is a schematic plan view of the organic layer OR of the second embodiment. Figure 16 is along the Figure 15 A schematic cross-sectional view of the display device DSP along the line XVI-XVI. exist Figure 15 in, with Figure 5 Similarly, in the first direction X of the sub-pixel SP (display element 20 ), the shape of the organic layer in plan view OR is shown in the region on the left side of the center line CL, and the region on the right side of the center line CL shows the shape of the organic layer. Outlines of the layers 51 to 57 of the layer OR and the opening OP.

[0098] Figure 15 The organic layers shown are OR with Figure 5 The organic layer OR shown is different in that the area of ​​the second carrier blocking layer 55 is larger than that of the first carrier blocking layer 53 . When viewed from above, the ends S1 and S2 are located between the ends S3 and S4, the end S3 is located between the ends S1, S2 and the end S5, and the end ...

no. 3 approach

[0102] Figure 17 It is a schematic cross-sectional view of the display device DSP according to the third embodiment. exist Figure 17 In the example, the first carrier transport layer 52 covers the end S1 of the first carrier injection layer 51, the first carrier blocking layer 53 covers the end S2 of the first carrier transport layer 52, the light emitting layer 54 covers the end S3 of the first carrier blocking layer 53 , the second carrier blocking layer 55 covers the end S4 of the light emitting layer 54 , and the second carrier transport layer 56 covers the end S4 of the second carrier blocking layer 55 . At the end S5 , the second carrier injection layer 57 covers the end S6 of the second carrier transport layer 56 . In each of the layers 51 to 57 , the portions near the end portions S1 to S7 are in contact with the rib portion 14 . The second carrier injection layer 57 is in contact with the second electrode E2 as a whole, but the other layers 51 to 56 are not in co...

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PUM

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Abstract

A display device according to an embodiment includes a first electrode, an organic layer disposed on the first electrode, and a second electrode covering the organic layer. The organic layer includes a first layer having a first end portion, and a second layer between the first layer and the second electrode. The second layer covers the first end portion.

Description

[0001] Cross-reference to related applications [0002] The present application is based on and claims priority to Japanese Patent Application No. 2021-008990 for which it applied on January 22, 2021, and the entire contents described in the Japanese Patent Application are incorporated by reference. technical field [0003] Embodiments of the present invention relate to display devices. Background technique [0004] In recent years, display devices employing organic light emitting diodes (OLEDs) as display elements have been put into practical use. The display element includes a pair of electrodes, and an organic layer disposed between the electrodes. Such an organic layer is formed by, for example, a vacuum deposition method. [0005] For example, when an organic layer formed by laminating a plurality of functional layers is formed, there is a possibility that the edge of the functional layer is uneven in the peripheral portion of the organic layer, and the performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56H01L27/32
CPCH10K59/351H10K59/352H10K50/14H10K50/17H10K50/11H10K50/18H10K50/171H10K50/181H10K59/88H10K59/122H10K59/121H10K71/166H10K71/00H10K71/164H10K2101/40
Inventor 金城拓海青木逸军司雅和
Owner JAPAN DISPLAY INC
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