Display device substrate, display device substrate manufacturing method, display device, liquid crystal display device, liquid crystal display device manufacturing method and organic electroluminescent display device

• US 9,461,265 B2
• Filed: 05/20/2015
• Issued: 10/04/2016
• Est. Priority Date: 10/02/2008
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Moriwaki, Hiroyuki
• Primary Examiner(s): CHIEN, LUCY P
• Application Number:
  US14/716,907
• Publication Number:
  US 20150340418A1
• Time in Patent Office: 503 Days
• Field of Search: 349/138, 349/122
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer
• CPC Class Codes: G02F 2201/50 Protective arrangements
• CPC Class Codes: G02F 2201/501 Blocking layers, e.g. against migration of ions
• CPC Class Codes: H10K 2102/00 Constructional details relating to the organic devices covered by this subclass
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/8731 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers

Abstract

The present invention provides a display device substrate, a display device substrate manufacturing method, a display device, a liquid crystal display device, a liquid crystal display device manufacturing method and an organic electroluminescent display device that allow suppressing faults derived from occurrence of gas and/or bubbles in a pixel region. The present invention is a display device substrate that comprises: a photosensitive resin film; and a pixel electrode, in this order, from a side of an insulating substrate. The display device substrate has a gas-barrier insulating film, at a layer higher than the photosensitive resin film, for preventing advance of a gas generated from the photosensitive resin film, or has a gas-barrier insulating film, between the photosensitive resin film and the pixel electrode, for preventing advance of gas generated from the photosensitive resin film.

Claims

1. An organic electroluminescent display device, comprising:

an insulating substrate;

a photosensitive resin film and an electrode provided on the insulating substrate in this order; and

an insulating film provided between the photosensitive resin film and the electrode,

wherein the photosensitive resin film is covered by at least one of the electrode and the insulating film in a pixel region,

the insulating film overlaps an outer edge portion of the electrode and includes a first opening on the electrode in the pixel region,

the insulating film comprising an inorganic insulating film,

the organic electroluminescent display device further comprising a gate wiring provided under the photosensitive resin film, an interlayer insulating film provided on the gate wiring, a first conductive layer provided on the interlayer insulating film, and a second conductive layer provided on the insulating film,

the insulating film and the photosensitive resin film provided with a first contact hole in a terminal area in a frame region, and wherein a side face of the first contact hole is covered by the second conductive layer,

wherein a void of the first contact hole, the first conductive layer, and the second conductive layer overlap each other, and the first conductive layer being electrically connected to the second conductive layer, and

wherein the gate wiring is electrically connected to the first conductive layer through a second contact hole in the interlayer insulating film, whereby the gate wiring is electrically connected to the second conductive layer.

2. The organic electroluminescent display device according to claim 1, wherein the photosensitive resin film has a second opening, and the second opening of the photosensitive resin film is covered by the electrode.

3. The organic electroluminescent display device according to claim 1, wherein the insulating film comprises a silicon nitride film.

4. The organic electroluminescent display device according to claim 1, wherein the electrode is an anode, and a partition is provided on the anode.

5. The organic electroluminescent display device according to claim 4, wherein a third opening is formed in the partition, and an organic film comprising an emissive layer is provided in the third opening of the partition.

6. The organic electroluminescent display device according to claim 4, wherein a fourth opening is formed in the anode, and the fourth opening of the anode corresponds to the boundary of a pixel and is covered by the partition.

7. The organic electroluminescent display device according to claim 1, wherein the insulating substrate is a first resin substrate.

8. The organic electroluminescent display device according to claim 7, wherein the organic electroluminescent display device has a second resin substrate affixed to the first resin substrate by way of a photocurable adhesive.

17. The organic electroluminescent display device according to claim 1, wherein the organic electroluminescent display device further comprises another photosensitive resin film provided on the insulating film and another insulating film provided on the above other photosensitive resin film,

the second conductive layer is formed on the above other insulating film,

the insulating film, the photosensitive resin film, the above other insulating film, and the above other photosensitive resin film are provided with a third contact hole in the terminal area in the frame region, and a side face of the third contact hole is covered by the second conductive layer, and

the void of the third contact hole, the first conductive layer, and the second conductive layer overlap each other, and the first conductive layer is electrically connected to the second conductive layer.

18. The organic electroluminescent display device according to claim 1, wherein the organic electroluminescent display device further comprises another photosensitive resin film provided on the insulating film and another insulating film provided on the above other photosensitive resin film,

the second conductive layer is formed on the above other insulating film,

another conductive layer is formed between the insulating film and the above other photosensitive resin film,

the insulating film and the photosensitive resin film are provided with a third contact hole in the terminal area in the frame region, and a side face of the third contact hole is covered by the above other conductive layer,

the above other insulating film and the above other photosensitive resin film are provided with a fourth contact hole, and a side face of the fourth contact hole is covered by the above other conductive layer, and

the void of each of the third and fourth contact holes, the first conductive layer, the above other conductive layer, and the second conductive layer overlap each other, and the first conductive layer is electrically connected to the second conductive layer.

9. An organic electroluminescent display device, comprising:

an insulating substrate;

a photosensitive resin film and an electrode provided on the insulating substrate in this order; and

an insulating film provided between the photosensitive resin film and the electrode,

wherein in a pixel region, the photosensitive resin film has a first region which is not covered by the electrode but covered by the insulating film, and a second region which is covered by the electrode and the insulating film,

the electrode is an anode,

a partition is provided on the anode,

a first opening is formed in the partition,

an organic film comprising an emissive layer is provided in the first opening of the partition,

the insulating film comprising an inorganic insulating film, and wherein the photosensitive resin film has a second opening,

an entirety of a wall surface of the second opening in the photosensitive resin film is covered by the inorganic insulating film in the pixel region,

the organic electroluminescent display device further comprising a gate wiring provided under the photosensitive resin film, an interlayer insulating film provided on the gate wiring, a first conductive layer provided on the interlayer insulating film, a second conductive layer provided on the insulating film, another photosensitive resin film provided on the second conductive layer, another insulating film provided on the another photosensitive resin film, and a third conductive layer provided on the another insulating film,

the insulating film and the photosensitive resin film are provided with a first contact hole, and a side face of the first contact hole is covered by the second conductive layer,

wherein a void of the first contact hole, the first conductive layer, and the second conductive layer overlap each other, and wherein the first conductive layer is electrically connected to the second conductive layer,

wherein the another insulating film and the another photosensitive resin film are provided with a second contact hole in a terminal area in a frame region, and a side face of the second contact hole is covered by the third conductive layer, and

wherein a void of the second contact hole, the second conductive layer, and the third conductive layer overlap each other, and the second conductive layer is electrically connected to the third conductive layer, whereby the first conductive layer is electrically connected to the third conductive layer.

10. The organic electroluminescent display device according to claim 9, wherein the organic electroluminescent display device has wiring provided at a layer higher than the inorganic insulating film, and the second opening of the photosensitive resin film is covered by the wiring.

11. The organic electroluminescent display device according to claim 9, wherein at least part of a higher-layer side of a wall surface of the second opening of the photosensitive resin film is covered by the inorganic insulating film.

12. The organic electroluminescent display device according to claim 9, wherein the insulating film has a third opening, and at least part of the third opening of the insulating film is covered by the electrode.

13. The organic electroluminescent display device according to claim 9, wherein a fourth opening is formed in the anode, and the fourth opening of the anode corresponds to the boundary of a pixel and is covered by the partition.

14. The organic electroluminescent display device according to claim 9, wherein the insulating film comprises a silicon nitride film.

15. The organic electroluminescent display device according to claim 9, wherein the insulating substrate is a first resin substrate.

16. The organic electroluminescent display device according to claim 15, wherein the organic electroluminescent display device has a second resin substrate affixed to the first resin substrate by way of a photocurable adhesive.

19. The organic electroluminescent display device according to claim 9, wherein the side face of the first contact hole is covered by the insulating film, and the side face of the second contact hole is covered by the above other insulating film.

20. An organic electroluminescent display device, comprising:

an insulating substrate;

a photosensitive resin film and an electrode provided on the insulating substrate in this order; and

an insulating film provided between the photosensitive resin film and the electrode, wherein the photosensitive resin film is covered by at least one of the electrode and the insulating film, the insulating film overlaps an outer edge portion of the electrode and includes a first opening on the electrode, the organic electroluminescent display device comprises, as the electrode, pixel electrodes that are provided spaced apart from each other, and the insulating film is selectively provided at gaps between the pixel electrodes the insulating film comprising an inorganic insulating film, the organic electroluminescent display device further comprising a gate wiring provided under the photosensitive resin film, an interlayer insulating film provided on the gate wiring, a first conductive layer provided on the interlayer insulating film, and a second conductive layer provided on the insulating film, the insulating film and the photosensitive resin film provided with a first contact hole in a terminal area in a frame region, and wherein a side face of the first contact hole is covered by the second conductive layer, wherein a void of the first contact hole, the first conductive layer, and the second conductive layer overlap each other, and the first conductive layer being electrically connected to the second conductive layer, and wherein the gate wiring is electrically connected to the first conductive layer through a second contact hole in the interlayer insulating film, whereby the gate wiring is electrically connected to the second conductive layer.