# US 2014/0192303 A1 · Display unit

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- Number: US 2014/0192303 A1
- Document ID: US20140192303A1
- Status: Published application
- Kind: A1
- Application number: 14/235,376
- Filed: 2012-07-30
- Published: 2014-07-10
- Earliest claimed: 2011-08-03
- Assignees: Sony Corporation
- Inventors: Akihiro Shibata; Mitsunari Hoshi
- Web page: https://patentgrep.com/patent/US20140192303A1

## CPC

- G02F 1/13363: Birefringent elements, e.g. for optical compensation
- G02B 5/3016: {involving passive liquid crystal elements (optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528)}
- G02B 30/25: using polarisation techniques
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

There is provided a display unit capable of reducing deterioration in the 3D characteristics. A phase difference device is bonded to a surface on a light outgoing side of a liquid crystal display panel. In the phase difference device, two kinds of phase difference regions with slow-axis directions different from each other are arranged in correspondence with each pixel. Each of the phase difference regions is arranged in contact with the phase difference region of a different kind, and a side section, of each of the phase difference region, that is in contact with the phase difference region of the different kind has waviness with an amplitude a that satisfies following expressions: 0<a<amax(φ) amax(φ)=−0.7/(φ−1.2)+0.35 φ=arctan(P/(4d)) P: a pixel pitch d: a distance between the pixel and the phase difference device.

## Claims

### Claim 1

A display unit, comprising:
a display panel where a plurality of pixels are arranged in a matrix; and
a phase difference device bonded to the display panel, wherein
the phase difference device includes a phase difference layer where two or more kinds of phase difference regions having different slow-axis directions are arranged in correspondence with the respective pixels,
each of the phase difference regions is arranged in contact with the phase difference region of a different kind, and
a side section, of each of the phase difference regions, that is in contact with the phase difference region of the different kind has waviness with an amplitude a that satisfies following expressions.
0<a<amax(φ)
amax(φ)=−0.7/(φ−1.2)+0.35
φ=arctan(P/(4d))
P: a pitch of the pixel
d: a distance between the pixels and the phase difference device

### Claim 2 (depends on 1)

The display unit according to claim 1, wherein the display panel includes a light-transmissive filter section in a region, in each of the pixels, that is closer to the phase difference device, and further includes a black matrix section in a same plane as the filter section, and
the phase difference region is arranged to allow a centerline of the phase difference region and a centerline of the filter section to be placed in a same plane.

### Claim 3 (depends on 2)

The display unit according to claim 2, wherein a width of each of the filter sections and a distance between the filter sections that are adjacent to each other are equal to each other.