DISPLAY DEVICE

• US 20090309813A1
• Filed: 06/10/2009
• Published: 12/17/2009
• Est. Priority Date: 06/11/2008
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: FUJITA, Yasuo
• Granted Patent: US 8,345,209 B2
• Time in Patent Office: Days
• US Class Current: 345/55
• CPC Class Codes: G02F 1/133388 with constructional differences between the display region and the peripheral region
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G02F 2201/56 Substrates having a particular shape, e.g. non-rectangular
• CPC Class Codes: G09G 2300/0443 with several sub-pixels for the same colour in a pixel, not specifically used to display gradations G09G3/364 takes precedence
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers

Abstract

A display device in accordance with an exemplary aspect of the present invention includes a non-rectangular display area, a frame area surrounding the display area, a plurality of picture elements arranged in the display area, and a plurality of effective display areas having respective colors provided in the picture elements, wherein each of the plurality of effective display areas having respective colors provided in the picture element located in a boundary portion of the display area (display-area edge) is formed such that aperture ratios are the same within one picture element and that center lines in terms of a second direction (longitudinal direction) perpendicular to a first direction along which each color of the effective display areas having respective colors is lined up are located on an extension line of the center line of effective display areas provided in the picture element adjacent in a first direction (lateral direction).

Claims

1. A display device comprising:

a non-rectangular display area;

a frame area surrounding the display area;

a plurality of picture elements arranged in the display area; and

a plurality of effective display areas having respective colors provided in the picture element,

wherein each of the plurality of effective display areas having respective colors provided in the picture element located in a boundary portion of the display area is formed such that aperture ratios are the same within one picture element and that center lines in terms of a second direction perpendicular to a first direction along which each color of the effective display areas having respective colors is lined up are located on an extension line of the center line of effective display areas provided in the picture element adjacent in the first direction.

2. The display device according to claim 1, wherein in the picture element located in the boundary portion of the display area, each of the plurality of effective display areas having respective colors is formed in a same shape within one picture element.

3. The display device according to claim 1, wherein in the picture element located in the boundary portion of the display area, each of the plurality of effective display areas having respective colors is formed in symmetrical about the center line.

4. The display device according to claim 1, wherein the picture element in which at least one of the plurality of effective display areas having respective colors is shielded by the frame area beyond the center line is turned off.

5. The display device according to claim 1, wherein the display device is a liquid crystal display device including liquid crystal filled between an array substrate and an opposing substrate.

6. The display device according to claim 5, further comprising:

a black matrix formed on the opposing substrate and having an opening portion; and

a colored layer provided in the opening portion of the black matrix,

wherein in the picture element located in the boundary portion of the display area, a size of the opening portion of the black matrix is adjusted so that aperture ratios of the plurality of effective display areas having respective colors is the same within one picture element.