Display apparatus

Patent metadata

Field	Value
Publication number	US-9995959-B2
Application number	US-201514677830-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Nov 18, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A display apparatus comprises a display panel and a reflection member. The display panel comprises an array of pixels, the array having a quadrangular shape. The reflection member is disposed in a position not to overlap at least a portion of the array when viewed in a normal direction substantially perpendicular to a major surface of the display panel, the reflection member being configured to reflect light that is emitted from the display panel in a direction slanted with respect to the normal direction. The combination of light emitted from the display panel in the normal direction and the reflected light is configured to form an image having a shape other than a quadrangular shape.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel comprising a major surface, the display panel comprising an array of pixels;
a first polarization member that is disposed over the display panel, and configured to separate light output from the major surface of the display panel into first polarized light and second polarized light that are respectively polarized in a first direction and a second direction that are substantially perpendicular to each other;
a second polarization member that is disposed over the first polarization member such that the first polarization member is disposed between the display panel and the second polarization member, the second polarization member being configured to allow light polarized in the first direction to transmit therethrough and inhibit light polarized in the second direction from transmitting therethrough;
a reflection member that is disposed in a position not to overlap any portion of the array when viewed in a normal direction substantially perpendicular to the major surface, the reflection member having a reflective surface and being configured to reflect light, via the reflective surface, output from the display panel in a direction slanted with respect to the normal direction and transmitted through the first polarization member toward the second polarization member;
a first phase retarder that is disposed in a path of light that is output from the display panel and transmitted through the first polarization member toward the reflection member; and
a second phase retarder that is disposed in a path of light that is reflected by the reflection member and transmitted toward the second polarization member,
wherein the reflective surface of the reflection member is substantially perpendicular to or crosses the major surface of the display panel.

2. The display apparatus of claim 1 , wherein the display panel has a substantially quadrangular shape.

3. The display apparatus of claim 1 , wherein each of the first phase retarder and the second phase retarder is a quarter wave plate, wherein there is an angle of about 45° between a slow axis of the first phase retarder and an axis of polarization of the first polarization member, wherein there is an angle of about 90° between a slow axis of the second phase retarder and the slow axis of the first phase retarder.

4. The display apparatus of claim 1 , wherein the first polarization member comprises a plurality of first areas configured to transmit therethrough only a component of the first direction of light emitted from the display panel and a plurality of second areas configured to transmit therethrough only a component of the second direction of the light emitted from the display panel.

5. The display apparatus of claim 4 , wherein the plurality of first areas and the plurality of second areas are arranged in a checkerboard pattern.

6. The display apparatus of claim 4 , wherein the plurality of first areas being stripe-shaped and the plurality of second areas being stripe-shaped are alternately arranged.

7. The display apparatus of claim 1 , wherein the first polarization member is configured to switch between transmitting therethrough only a component of the first direction of the light emitted from the display panel and transmitting therethrough only a component of the second direction of the light emitted from the display panel according to an electrical signal.

8. The display apparatus of claim 1 , wherein an angle between a light-emission surface of the display panel and a reflective surface of the reflection member is equal to or greater than about 90°.

9. The display apparatus of claim 1 , wherein the major surface comprises a light-emission surface, and wherein an angle between the light-emission surface of the display panel and the reflective surface of the reflection member is adjustable.

10. The display apparatus of claim 1 , wherein the reflection member surrounds the display panel when viewed in the normal direction and is disposed not to reflect light that is emitted from the display panel in the normal direction.

11. The display apparatus of claim 1 , wherein the reflection member does not overlap the display panel when viewed in the normal direction substantially perpendicular to the major surface of the display panel.

12. The display apparatus of claim 1 , wherein each of the first and second polarization members and the first and second phase retarders has a major surface, and wherein the reflection member is substantially perpendicular to the major surfaces of the first and second polarization members and the major surfaces of the first and second phase retarders.

13. The display apparatus of claim 1 , wherein the reflection member is configured to reflect light that is emitted from the display panel and passes through the first polarization member and the first phase retarder toward the second phase retarder and the second polarization member such that the reflected light passes through the second phase retarder and the second polarization member.

14. A display apparatus comprising:
a display panel comprising an array of pixels, the array having a quadrangular shape; and
a reflection member that is disposed in a place not to overlap any portion of the array when viewed in a normal direction substantially perpendicular to a major surface of the display panel, the reflection member having a reflective surface and being configured to reflect light, via the reflective surface, that is output from the display panel in a direction slanted with respect to the normal direction,
wherein combination of light output from the major surface of the display panel in the normal direction and the reflected light is configured to form an image having a shape other than a quadrangular shape,
wherein the reflective surface of the reflection member is substantially perpendicular to or crosses the major surface of the display panel.

15. The display apparatus of claim 11 , further comprising:
a first polarization member that is disposed over the display panel, and configured to separate light emitted from the display panel into first polarized light and second polarized light that are respectively polarized in a first direction and a second direction that are substantially perpendicular to each other;
a second polarization member that is disposed over the first polarization member such that the first polarization member is disposed between the display panel and the second polarization member, the second polarization member being configured to allow light polarized in the first direction to transmit therethrough and inhibit light polarized in the second direction from transmitting therethrough;
a first phase retarder that is disposed in a path of light that is emitted from the display panel and is incident on the reflection member; and
a second phase retarder that is disposed in a path of light that is reflected by the reflection member and is incident on the second polarization member.

16. The display apparatus of claim 15 , wherein each of the first phase retarder and the second phase retarder is a quarter wave plate, wherein there is an angle of about 45° between a slow axis of the first phase retarder and an axis of polarization of the first polarization member, wherein there is an angle of about 90° between a slow axis of the second phase retarder and the slow axis of the first phase retarder.

17. The display apparatus of claim 15 , wherein the first polarization member comprises a plurality of first areas configured to transmit therethrough only a component of

Assignees

• Samsung Display Co Ltd

Inventors

• Kwon Jaejoong
• Lee Hyesog

Classifications

• G02B5/3083 Primary

  Birefringent or phase retarding elements (G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001) · CPC title

• G02B27/1066

  for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view · CPC title

• G02F2413/02

  Number of plates being 2 · CPC title

• G09F9/30 Primary

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• G02F1/133528 Primary

  Polarisers · CPC title