Display device substrate and display device

Patent metadata

Field	Value
Publication number	US-2016103531-A1
Application number	US-201514974301-A
Country	US
Kind code	A1
Filing date	Dec 18, 2015
Priority date	Jun 19, 2013
Publication date	Apr 14, 2016
Grant date	—

Abstract

A display device substrate including a transparent substrate having a display portion formed in an overall rectangular shape in a planar view, an electrode disposed in the display portion and having pixel openings, the electrode including partial patterns which are electrically isolated from one another and formed in parallel to a first direction along the transparent substrate, a first transparent resin layer formed on the electrode, a transparent electrode formed on the first transparent resin layer, and including partial patterns which are formed along the transparent substrate and in parallel to a second direction perpendicular to the first direction, and a second transparent resin layer formed on the partial patterns of the transparent electrode.

First claim

What is claimed is:

1 . A display device substrate, comprising:
a transparent substrate having a display portion formed in an overall rectangular shape in a planar view; an electrode disposed in the display portion and having a plurality of pixel openings, the electrode including a plurality of partial patterns which are electrically isolated from one another and formed in parallel to a first direction along the transparent substrate; a first transparent resin layer formed on the electrode; a transparent electrode formed on the first transparent resin layer, and including a plurality of partial patterns which are formed along the transparent substrate and in parallel to a second direction perpendicular to the first direction; and a second transparent resin layer formed on the partial patterns of the transparent electrode.

2 . The display device substrate according to claim 1 , wherein the electrode comprises a first light absorption resin layer and a metal film formed on the display portion in an order thereof, the first light absorption layer includes a black colorant, and the metal film has alkali tolerance.

3 . The display device substrate according to claim 2 , wherein the electrode further includes a second light absorption resin layer including a black colorant and formed on the metal film.

4 . The display device substrate according to claim 2 , wherein the first light absorption resin layer has an optical density in a range of from 0.4 to 1.8 per 1 μm film thickness, as measured by a transmittance measurement,
the first light absorption resin layer has a film thickness in a range of from 0.1 μm to 0.7 μm, and
the electrode has a film thickness of 1 μm or less.

5 . The display device substrate according to claim 2 , wherein the metal film comprises a copper alloy.

6 . The display device substrate according to claim 5 , wherein the copper alloy comprises at least one selected from the group consisting of magnesium, calcium, titanium, molybdenum, indium, tin, zinc, aluminum, beryllium and nickel.

7 . The display device substrate according to claim 2 , wherein the black colorant is carbon.

8 . The display device substrate according to claim 1 , wherein the display portion has a terminal portion formed in an outer periphery of the display portion,
the terminal portion is electrically connected to the electrode and includes a base terminal and a cover terminal formed on the base terminal, and the base terminal includes an extended portion of the partial patterns of the electrode and has the metal film exposed.

9 . The display device substrate according to claim 1 , further comprising:
an auxiliary conductor formed on the partial patterns of the transparent electrode, wherein the auxiliary conductor has a resistivity smaller than a resistivity of the transparent electrode.

10 . The display device substrate according to claim 1 , wherein red pixels formed by a red layer, green pixels formed by a green layer or blue pixels formed by a blue layer are formed in the pixel openings; and
the red pixels, the green pixels or the blue pixels are formed adjacently between the transparent substrate and the first transparent resin layer in a planar view.

11 . The display device substrate according to claim 1 , further comprising:
a black matrix formed on the first transparent resin layer via the partial patterns such that the black matrix overlaps with the partial patterns of the electrode in a planar view.

12 . The display device substrate according to claim 11 , wherein the black matrix is a black layer which has a light shielding property and includes a colorant comprising an organic pigment.

13 . The display device substrate according to claim 1 , further comprising:
a common electrode comprising a transparent conductive film and formed on the second transparent resin layer.

14 . The display device substrate according to claim 13 , further comprising:
a terminal portion formed in an outer periphery of the display portion and electrically connected to the electrode; and a cover terminal formed on the terminal portion, wherein the cover terminal comprises a material same as a material in the transparent electrode or the common electrode, and is electrically isolated from the transparent electrode or the common electrode.

15 . The display device substrate according to claim 13 , further comprising:
an auxiliary conductor comprising an aluminum alloy and formed on the partial patterns of the transparent electrode; and a terminal portion formed in an outer periphery of the display portion and electrically connected to the transparent electrode, wherein the terminal portion includes a base terminal and a cover terminal, the base terminal includes an extended portion of the auxiliary conductor, and the cover terminal comprises a material same as a material in the common electrode and is electrically isolated from the common electrode.

16 . A display device, comprising:
the display device substrate according to claim 1 .

17 . The display device according to claim 16 , which has a touch sensing function and is configured such that an electrostatic capacitance that changes in response to a pointer approaching or contacting to a display screen of the display device is detected as a change in an electrostatic capacitance between the partial patterns of the metal film and the partial patterns of the transparent electrode.

Assignees

• Toppan Printing Co Ltd

Inventors

• Kimura Yukihiro
• Fukuyoshi Kenzo

Classifications

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• H01L27/323

  Electricity · mapped topic

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title