IP Library Granted Patent US 9,093,043
Granted Patent B2
US 9,093,043 · App. 14/089,226 · Granted Jul 28, 2015

Display device and electronic apparatus

Inventor: Gen Koide (Tokyo, JP)
Assignee: JAPAN DISPLAY INC.
G09G3/3648G02F1/136286G02F2001/136295G09G2300/0426G09G2300/0456G09G2300/0465
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Quick Facts
Patent No.
US 9,093,043
App. No.
14/089,226
Granted
Jul 28, 2015
Kind
B2
Abstract

According to an aspect, a display device includes a display area portion in which first line segments and second line segments intersect each other and are arranged in a grid to form a non-open portion that divides a light-transmitting opening into open portions, and the open portions form pixels arranged in a matrix. Metal layers are formed on a color filter in the display area portion and disposed in positions overlapping the non-open portion. A metal layer having the largest area in areas overlapping the first line segments among metal layers is the same as a metal layer having the largest area in areas overlapping the second line segments among those of metal layers, and is formed of a metal layer having the highest reflectance among the metal layers.

Claims (44)

1. A display device comprising:

a display area portion in which a plurality of first line segments extending in a first direction and a plurality of second line segments extending in a second direction intersecting the first direction intersect each other and are arranged in a grid to form a non-open portion that divides a light-transmitting opening into open portions, and the open portions divided by the non-open portion in a matrix form pixels arranged in a matrix;

a vertical drive circuit that applies vertical scan pulses to scan lines and selects pixels in the display area portion row by row; and

a horizontal drive circuit that supplies an image signal to each of the pixels of a row selected by the vertical drive circuit, wherein

the display area portion comprises:

a color filter in which a colored filter is arranged corresponding to the open portions of the pixels; and

a plurality of metal layers that are formed on the color filter and disposed in positions overlapping the non-open portion when viewed from a surface of the display area portion,

a metal layer having the largest area in areas overlapping the plurality of first line segments among the plurality of metal layers is the same as a metal layer having the largest area in areas overlapping the plurality of second line segments among the plurality of metal layers, and

the metal layer that has the largest area in the areas overlapping the plurality of first line segments and the largest area in the areas overlapping the plurality of second line segments is formed of a metal layer having the highest reflectance among the plurality of metal layers,

wherein

the color filter comprises a black matrix arranged in a grid,

an area where the black matrix is arranged forms a role as the non-open portion,

the first direction is a direction along a scan line,

the second direction is a direction along a data line,

each of the first line segments is a portion of the black matrix which extends in the first direction, and

each of the second line segments is a portion of the black matrix which extends in the second direction.

2. The display device according to claim 1 , wherein the plurality of metal layers comprise:

a first wiring layer having first wirings that are connected to the vertical drive circuit and are arranged along the first line segments; and

a second wiring layer having second wirings that are connected to the horizontal drive circuit and are arranged along the second line segments.

3. The display device according to claim 2 , wherein

the plurality of metal layers comprise a reflective layer that is a layer different from the first wiring layer and the second wiring layer; and

the reflective layer has the metal layer that has the largest area in the areas overlapping the first line segments and the largest area in the areas overlapping the second line segments among the metal layers.

4. The display device according to claim 3 , further comprising a transparent substrate disposed at an end on the side from which light enters, wherein

the reflective layer is in contact with a surface on the color filter side of the transparent substrate.

5. The display device according to claim 3 , further comprising a common electrode formed of a transparent electrode, wherein

the reflective layer is in contact with the common electrode.

6. The display device according to claim 3 , wherein the reflective layer is in contact with the color filter.

7. The display device according to claim 3 , wherein the reflective layer has gaps formed at intersections between the first line segments and the second line segments.

8. An electronic apparatus having the display device and a control device that supplies an input signal to the display device, the display device comprising:

a display area portion in which a plurality of first line segments extending in a first direction and a plurality of second line segments extending in a second direction intersecting the first direction intersect each other and are arranged in a grid to form a non-open portion that divides a light-transmitting opening into open portions, and the open portions divided by the non-open portion in a matrix form pixels arranged in a matrix;

a vertical drive circuit that applies vertical scan pulses to scan lines and selects pixels in the display area portion row by row; and

a horizontal drive circuit that supplies an image signal to each of the pixels of a row selected by the vertical drive circuit, wherein

the display area portion comprises:

a color filter in which a colored filter is arranged corresponding to the open portions of the pixels; and

a plurality of metal layers that are formed on the color filter and disposed in positions overlapping the non-open portion when viewed from a surface of the display area portion,

a metal layer having the largest area in areas overlapping the plurality of first line segments among the plurality of metal layers is the same as a metal layer having the largest area in areas overlapping the plurality of second line segments among the plurality of metal layers, and

the metal layer that has the largest area in the areas overlapping the plurality of first line segments and the largest area in the areas overlapping the plurality of second line segments is formed of a metal layer having the highest reflectance among of the plurality of metal layers,

wherein

the color filter comprises a black matrix arranged in a grid,

an area where the black matrix is arranged forms a role as the non-open portion,

the first direction is a direction along a scan line,

the second direction is a direction along a data line,

each of the first line segments is a portion of the black matrix which extends in the first direction, and

each of the second line segments is a portion of the black matrix which extends in the second direction.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 3, 2013
From: KOIDE, GEN
To: JAPAN DISPLAY INC.
Reel/Frame 031704/0505 →
Priority Claims (1)
JP 2012-260389 · Nov 28, 2012 · national
Continuity (1)
Related Publication 20140146094A1 · May 29, 2014