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Display device and method of manufacturing the same

A display device and display area technology, which is applied in the direction of identification devices, instruments, semiconductor devices, etc., can solve problems such as wiring breakage, and achieve the effect of reducing the cone angle

Active Publication Date: 2021-12-07
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, in a flexible organic EL display device, for example, if the frame area is reduced by bending the frame area on the terminal side, the wiring arranged in the frame area may be broken.

Method used

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  • Display device and method of manufacturing the same
  • Display device and method of manufacturing the same

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Experimental program
Comparison scheme
Effect test

no. 1 approach 》

[0030] Figure 1 to Figure 10 The first embodiment of the display device of the present invention is shown. In addition, in each of the following embodiments, an organic EL display device including an organic EL element is exemplified as a display device including a light emitting element. here, figure 1 It is a plan view showing the schematic structure of the organic EL display device 30a of this embodiment. in addition, figure 2 is to mean along figure 1 A cross-sectional view of a schematic structure of a display region D of the organic EL display device 30 a taken along the line II-II in FIG. in addition, image 3 It is an equivalent circuit diagram showing the TFT layer 29 constituting the organic EL display device 30a. in addition, Figure 4 It is a cross-sectional view showing the organic EL layer 16 constituting the organic EL display device 30a. in addition, Figure 5 It is a plan view showing the bent portion B of the frame region F of the organic EL displa...

no. 2 approach 》

[0071] Figure 11 and Figure 12 A second embodiment of the display device of the present invention is shown. here, Figure 11 It is a cross-sectional view showing a schematic structure of the frame region F of the organic EL display device 30b of this embodiment, and is equivalent to Image 6 diagram. in addition, Figure 12 The end portion of the inorganic insulating film L constituting the organic EL display device 30b is enlarged. Figure 11 A detailed cross-sectional view of , and is equivalent to Figure 7 diagram. Furthermore, in each of the following embodiments, for the Figure 1 to Figure 10 The same reference numerals are assigned to the same parts, and detailed description thereof will be omitted.

[0072] In the above-mentioned first embodiment, the organic EL display device 30a manufactured by collectively dry-etching the laminated film of the inorganic insulating film was exemplified, but in this embodiment, the organic EL display device 30a manufactured b...

no. 3 approach 》

[0086] Figure 13 A third embodiment of the display device of the present invention is shown. here, Figure 13 It is a cross-sectional view showing a schematic structure of the frame region F of the organic EL display device 30c of this embodiment, and is equivalent to Image 6 diagram.

[0087] In the above-mentioned first and second embodiments, the organic EL display devices 30a and 30b in which the frame wirings 12ea and 12eb are directly formed on the surface of the resin substrate layer 10 were exemplified. On the surface of the layer 10 , an organic EL display device 30 c is formed with a frame wiring 12 ec via a frame planarizing film 21 .

[0088] The organic EL display device 30c includes a display area D and a frame area F defined around the display area D, similarly to the organic EL display device 30a of the first embodiment.

[0089] The structure of the display region D of the organic EL display device 30c is the same as that of the organic EL display device...

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Abstract

At the bent portion (B) of the frame region (F), an opening (A) that penetrates the inorganic insulating film to expose the upper surface of the resin substrate (10) is formed in the inorganic insulating film constituting at least one layer of the TFT layer. ), the frame wiring (12ea) is provided on the resin substrate (10) exposed from the opening (A), and the inorganic insulating film of at least one layer of the TFT layer is in contact with the upper surface of the resin substrate (10). The insulating film is formed of a silicon nitride oxide film.

Description

technical field [0001] The invention relates to a display device and a manufacturing method thereof. Background technique [0002] In recent years, as a display device replacing a liquid crystal display device, a self-luminous organic EL display device using an organic electroluminescence (electroluminescence, EL) element has attracted attention. Among such organic EL display devices, a flexible organic EL display device in which organic EL elements and the like are formed on a flexible resin substrate has been proposed. Here, in an organic EL display device, a rectangular display area for displaying an image is provided, and a frame area is provided around the display area, and there is an urgent need to reduce the frame area. Furthermore, in a flexible organic EL display device, for example, if the frame area on the terminal side is bent to reduce the size of the frame area, the wiring arranged in the frame area may be broken. [0003] For example, Patent Document 1 disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/30G09F9/00H10K99/00
CPCG09F9/00G09F9/30H10K59/124H10K71/231H10K59/873H10K59/131H10K59/1201H10K77/111
Inventor 齐藤贵翁山中雅贵神崎庸辅三轮昌彦金子诚二
Owner SHARP KK
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