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Organic EL display panel and method for manufacturing organic EL display panel

A technology for a display panel and a manufacturing method, which is applied in the directions of organic semiconductor device, semiconductor/solid-state device manufacturing, and identification device, etc., can solve the problems of lowering display quality and the like

Active Publication Date: 2021-09-24
JOLED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the luminous color in the range where color mixing occurs may be different from the original luminous color, and may be recognized as a dark spot, resulting in a decrease in display quality.
In particular, in the configuration in which banks extending in the column direction are provided, color mixing spreads to a plurality of pixels along the banks, and there is a possibility of causing serious degradation in display quality.

Method used

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  • Organic EL display panel and method for manufacturing organic EL display panel
  • Organic EL display panel and method for manufacturing organic EL display panel
  • Organic EL display panel and method for manufacturing organic EL display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0073]

[0074] figure 1 It is a schematic block diagram showing the configuration of the organic EL display device 1 including the display panel 100 of the embodiment.

[0075] Such as figure 1 As shown, the organic EL display device 1 has a display panel 100 and a drive control unit 101 connected thereto. The display panel 100 is a panel using the electroluminescent phenomenon of organic materials, such as figure 2 As shown, a plurality of light emitting elements (organic EL elements) 10 are arranged in a matrix on a substrate. The drive control unit 101 includes four drive circuits 102 to 105 and a control circuit 106 .

[0076] In addition, the arrangement and the like of the drive control unit 101 with respect to the display panel 100 are not limited thereto.

[0077]

[0078] figure 2 It is a plan view schematically showing a schematic configuration of the display panel 100 viewed from the display surface side. image 3 is used figure 2 The A-A line cuts of...

Deformed example 1

[0251] In the above-mentioned embodiment, the position where the repairing bank 52 is formed is located above the pixel electrode 12, but the following configuration may be adopted: in addition to the repairing column bank 52Y of the display panel 100 of the embodiment, Figure 14 Repairing bank 52 is formed on the upper surface of planarizing layer 11 c between pixel electrodes 12 and near positions A1 and A2 where repairing bank 52 intersects missing portion 3 as shown in (a). The height of the repair bank 52 formed on the upper surface of the planarizing layer 11c is less than the height equivalent to the thickness of the pixel electrode 12, The defect that the material of the repairing bank 52 tends to wet and spread on the planarization layer 11 c and flow before curing can be suppressed, and the length of the missing portion 3 in the Y direction can be reduced. As a result, it is possible to reduce the area of ​​the color mixing region within the sub-pixel compared to th...

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Abstract

The present invention provides an organic EL display panel and a method for manufacturing the organic EL display panel. The organic EL display panel comprises: a pixel electrode; a plurality of elongated column banks; a missing part in which some of the elongated column banks do not exist; a pair of repair banks that are respectively formed in two gaps between the adjacent column banks on both sides of the column bank having the missing part above the pixel electrode in a row direction; a light emitting layer that includes a coating film formed in the gap between the column banks; and a common electrode above the light emitting layer, wherein the repair banks include a pair of repair row banks that exist in the two gaps and are formed above the pixel electrode of which the position in the column direction is at least partially the same as that of the missing part and at positions spaced by a predetermined distance in the column direction; and repair column banks that connect, in the column direction, end portions of the repair row banks that are not connected to the column banks in the row direction and a closest portion of the column bank having the missing part.

Description

technical field [0001] The present invention relates to a method for manufacturing an organic EL display panel in which organic EL (Electro Luminescence, electroluminescence) elements are arranged in a matrix using the electroluminescence phenomenon of organic materials, and particularly relates to a process of forming banks. Background technique [0002] In recent years, organic EL display panels have been put into practical use as light-emitting display devices. In an organic EL display panel, each organic EL element is a current-driven light-emitting element having a basic structure in which a light-emitting layer containing an organic light-emitting material is disposed between a pair of electrodes of an anode and a cathode. When driven, When a voltage is applied between a pair of electrodes, a current is generated by recombination of holes injected into the light-emitting layer from the anode and electrons injected into the light-emitting layer from the cathode. In an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/00G09F9/30H01L27/32H05B33/10H05B33/12H01L51/50H05B33/22
CPCG09F9/00G09F9/30H05B33/10H05B33/12H05B33/22H05B33/06H10K59/122H10K71/861H10K71/441H10K71/00H10K59/1201
Inventor 篠川泰治梅津和宏石川大祐川胜康弘
Owner JOLED INC