DISPLAY COMPONENT AND DISPLAY DEVICE

• US 20150355516A1
• Filed: 12/20/2013
• Published: 12/10/2015
• Est. Priority Date: 12/27/2012
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: IMAI, Akihiro, KANBE, Makoto, FUKAYAMA, Motoaki, UEDA, Ryoh, OBATA, Taichi, TANAKA, Shigeki
• Application Number:
  US14/655,810
• Publication Number:
  US 20150355516A1
• Time in Patent Office: Days
• 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 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer

Abstract

An array board 11b includes a first conductive film, a second conductive film, an insulator, and an alignment film. The second conductive film is disposed above the first conductive film and includes at least a portion that overlaps the first conductive film in a plan view. The insulator is held between the first and the second conductive films. The insulator includes a contact hole at a position overlapping the first and the second conductive films in a plan view for connecting the second conductive film to the first conductive film. The alignment film 11e is disposed above the second conductive film and includes a portion overlapping the contact hole and a portion not overlapping the contact hole in a plan view. The bending portion 43 is defined by at least a portion of an edge of the contact hole in the insulator. The bending portion bends toward an inner side of the contact hole such that an outer angle of the bending portion in a plan view is a reflex angle.

Claims

1-15. -15. (canceled)

16. A display component comprising:

a first conductive film;

a second conductive film disposed above the first conductive film such that at least a portion of the second conductive film overlapping the first conductive film in a plan view;

an insulator held between the first conductive film and the second conductive film and including a contact hole for connecting the second conductive film to the first conductive film and, the contact hole being at a position overlapping the first conductive film and the second conductive film in a plan view; and

an alignment film disposed above the second conductive film and including a portion overlapping the contact hole in a plan view and a portion not overlapping the contact hole in a plan view,

wherein the contact hole includes an edge, at least a portion of which defines a bending portion of the insulator which bends toward an inner side of the contact hole such that an outer angle of the bending portion in a plan view is a reflex angle.

17. The display component according to claim 16, wherein

the contact hole of the insulator includes a contact hole main portion and an expanded hole portion,

the contact hole main portion overlaps at least a portion of the first conductive film and the second conductive film in a plan view,

the expanded hole portion is formed by expanding a portion of the contact hole main portion,

the bending portion is defined by the edge of the contact hole main portion and an edge of the expanded hole portion which continues from the edge of the contact hole main portion, and

the expanded hole portion has a smaller opening dimension than an opening dimension of the contact hole main portion.

18. The display component according to claim 17, wherein

the second conductive film defines a pixel electrode made of a transparent electrode material, and

the expanded hole portion is formed by expanding a portion of the contact hole main portion farther from a center of the pixel electrode in a plan view.

19. The display component according to claim 17, wherein, the expanded hole portion is formed by extending a corner of the contact hole main portion.

20. The display component according to claim 17, wherein:

the second conductive film defines a pixel electrode made of a transparent electrode material; and

the expanded hole portion is at a position not overlapping the pixel electrode in a plan view.

21. The display component according to claim 17, wherein, the expanded hole portion is at a position not overlapping the first conductive film in a plan view.

22. The display component according to claim 17, further comprising a third conductive film disposed below the first conductive film, at least a portion of the third conductive film overlapping the first conductive film in a plan view, wherein

at least a portion of the contact hole main portion overlaps the third conductive film in a plan view and the expanded hole portion is at a position not overlapping the third conductive film in a plan view.

23. The display component according to claim 22, wherein

the first conductive film defines at least a source electrode and a drain electrode;

the third conductive film defines a gate electrode that overlaps at least the source electrode and the drain electrode in a plan view and an auxiliary capacitor line disposed apart from the gate electrode in a plan view; and

at least a portion of the contact hole main portion of the insulator overlaps the drain electrode and the gate electrode in a plan view and the expanded hole portion is between the gate electrode and the auxiliary capacitor line in a plan view.

24. The display component according to claim 17, wherein the expanded hole portion of the insulator has an opening dimension of Wmax/2 or less, where Wmax is a maximum opening dimension of the contact hole main portion.

25. The display component according to claim 24, wherein the edge the expanded hole portion of the insulator which also defines the bending portion has a dimension of Wmax/2 or less.

26. The display component according to claim 17, wherein the expanded hole portion of the insulator has a tapered shape that narrows in a plan view as a distance from the contact hole main portion increases.

27. The display component according to claim 16, wherein

the insulator includes at least an organic insulator made of an organic resin material

at least the edge of the contact hole in the bending portion has a sectional shape gradually inclined,

the edge includes a first inclined portion and a second inclined portion,

the first inclined portion is on a lower layer side and steeply inclined, and

the second inclined portion is on an upper layer side and gently inclined.

28. The display component according to claim 16, further comprising:

a third conductive film disposed below the first conductive film, at least a portion of the third conductive film overlapping the first conductive film in a plan view; and

a semiconductor film held between the third conductive film and the first conductive film, wherein

the first conductive film forms at least a source electrode and a drain electrode,

the third conductive film forms a gate electrode overlapping at least the source electrode and the drain electrode in a plan view, and

the semiconductor film defines a channel connected to each of the source electrode and the drain electrode and is formed of an oxide semiconductor.

29. The display component according to claim 28, wherein the oxide semiconductor contains indium (In), gallium (Ga), zinc (Zn), and oxygen (O).

30. The display component according to claim 29, wherein the oxide semiconductor is crystalline.

31. The display component according to claim 16, wherein

edges of the contact hole of the insulator adjacent to each other have at least two inclined portions,

the inclined portions have sectional shapes that are inclined at angles different from each other.

32. A display device comprising:

the display component according to claim 16;

an opposite board disposed opposite the display component; and

a liquid crystal disposed between the display component and the opposite board.