Display board having insulating films and terminals, and display device including the same

Patent metadata

Field	Value
Publication number	US-10663821-B2
Application number	US-201615772062-A
Country	US
Kind code	B2
Filing date	Nov 1, 2016
Priority date	Nov 6, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

An array board includes input terminals, a first interlayer insulating film, a first planarization film, terminal lines, a second planarization film, and protective members. A first interlayer insulating film edge section and a first planarization film edge section are disposed between the input terminals and the display area. The terminal lines in a layer upper than the first planarization film and extending to cross the first interlayer insulating film edge section and the first planarization film edge section are connected to the input terminals. The second planarization film in a layer upper than the terminal lines includes a second planarization film edge section disposed closer to the input terminals relative to the first interlayer insulating edge section and the first planarization film edge section. The protective members in a layer upper than the second planarization film cover sections of the terminals lines not overlapping the second planarization film, respectively.

First claim

The invention claimed is:

1. A display board comprising:
a display area for displaying images;
a non-display area located outside the display area to surround the display area;
a plurality of terminals disposed in the non-display area;
a first insulating film disposed to cross a boundary between the display area and the non-display area, the first insulating film including a first insulating film edge section disposed between the plurality of terminals and the display area;
a plurality of terminal lines disposed in a layer upper than the first insulating film at least in the non-display area to cross the first insulating film edge section and connected to the plurality of terminals;
a second insulating film disposed in a layer upper than the plurality of terminal lines to cross the boundary between the display area and the non-display area, the second insulating film including a second insulating film edge section disposed closer to the plurality of terminals relative to the first insulating film edge section; and
a plurality of protective members formed from a transparent electrode film and disposed in a layer upper than the second insulating film at least in the non-display area, the plurality of protective members covering sections of the plurality of terminal lines not overlapping the second insulating film, respectively;
wherein the first insulating film edge section crosses the plurality of terminal lines that are adjacent to each other, and the first insulating film edge section and the second insulating film edge section are not formed in a region of the non-display area in which the plurality of terminals is disposed.

2. The display board according to claim 1 , wherein the second insulating film includes at least one projection projecting from the second insulating film edge section toward the plurality of terminals, the at least one projection being disposed between the adjacent terminal lines; and
wherein the second insulating film edge section crosses the plurality of terminal lines that are adjacent to each other.

3. The display board according to claim 2 , further comprising:
a display component disposed in the display area;
a component connecting portion disposed in a layer upper than the first insulating film in the display area and connected to the display component, the component connecting portion being in the layer in which the terminal lines are disposed;
a common electrode disposed in a layer upper than the second insulating film and including a hole at a position overlapping the component connecting portion, the common electrode being formed from the transparent electrode film that also forms the protective members;
a third insulating film disposed in a layer upper than the common electrode at least in the display area and including a component contact hole communicating with the second insulating film at a position overlapping the component connecting portion; and
a pixel electrode disposed in a layer upper than the third insulating film in the display area and connected to the component connecting portion via the component contact hole, the pixel electrode being formed from a second transparent electrode film.

4. The display board according to claim 3 , wherein the common electrode functions as a position detection electrode to obtain an electrostatic capacitance between the position detection electrode and a position input object with which a position is input.

5. The display board according to claim 1 , wherein
the second insulating film includes a section not overlapping the first insulating film and a section overlapping the first insulating film, and
the section not overlapping the first insulating film has a thickness smaller than a thickness of the section overlapping the first insulating film.

6. The display board according to claim 1 , further comprising:
a display component disposed in the display area; and
a component line disposed in a layer lower than the first insulating film at least in the display area and connected to the display component, wherein
the terminal line and the component line include line overlapping sections that overlap each other in the non-display area,
the first insulating film includes a line contact hole at a position overlapping the line overlapping sections through which the line overlapping sections are connected with each other.

7. The display board according to claim 1 , wherein the first insulating film includes a lower layer-side first insulating film and an upper layer-side first insulating film disposed in an upper layer side relative to the lower layer-side first insulating film.

8. A display device comprising:
the display board according to claim 1 ; and
a common board opposed to the display board.

Assignees

• Sharp Kk

Inventors

• Saitoh Takao
• Kanzaki Yohsuke
• Nakazawa Makoto
• ITO Kazuatsu
• Kaneko Seiji

Classifications

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02F1/13458

  Terminal pads · CPC title

• G02F1/136286 Primary

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title