WO2021117955A1

WO2021117955A1 - Display device

Info

Publication number: WO2021117955A1
Application number: PCT/KR2019/017770
Authority: WO
Inventors: 윤현식; 안병찬; 허성길
Original assignee: 쓰리디아이즈 주식회사; 서울과학기술대학교 산학협력단
Priority date: 2019-12-12
Filing date: 2019-12-16
Publication date: 2021-06-17
Also published as: KR20210074814A

Abstract

A display device is provided. The display device comprises: a display unit that includes a plurality of pixels arranged in a first direction and a second direction intersecting the first direction; and a lens unit that is disposed on the display unit and refracts light emitted from the display unit. The lens unit includes a light refraction unit that extends in a third direction intersecting the first direction and the second direction, and refracts light.

Description

display device

The present invention relates to a display device.

Recently, technology development for a display device that implements a 3D image without glasses or implements a different image according to a viewing direction has been actively conducted. However, the display device has a complicated structure and has poor image quality due to a moiré phenomenon.

In order to solve the above problems, the present invention provides a display device having excellent performance.

Other objects of the present invention will become apparent from the following detailed description and accompanying drawings.

A display device according to embodiments of the present disclosure includes a display unit including a plurality of pixels arranged in a first direction and a second direction intersecting the first direction, and disposed on the display unit, It includes a lens unit that refracts light. The lens unit includes a light refraction unit extending in a third direction intersecting the first direction and the second direction and refracting the light.

The light refraction unit may include a first light refraction unit and a second light refraction unit for refracting the light in different directions. The first optical refractive part and the second optical refractive part may be symmetrical with respect to the third direction.

The display unit may include a first pixel area disposed under the first light refractive unit and a second pixel area disposed under the second light refractive unit.

The plurality of pixels may include a plurality of first image pixels disposed in the first pixel area and a plurality of second image pixels disposed in the second pixel area. The display unit may provide a 3D image including a left-eye image and a right-eye image by dividing the source image. The plurality of first image pixels may provide the left eye image, and the plurality of second image pixels may provide the right eye image.

The display unit may further include an encoding editor that divides the source image into sub-pixel units.

The first image pixel may include a plurality of first image subpixels, and the second image pixel may include a plurality of second image subpixels. The source image may be divided into sub-pixel units and then rearranged to correspond to the first image sub-pixel and the second image sub-pixel.

The light refraction portion may have an upward convex shape. The light refraction part may have a semi-circular, semi-elliptical, triangular, or polygonal cross-section in the first direction.

The lens unit may further include a support unit disposed on the display unit and supporting the light refractive unit.

Display apparatuses according to embodiments of the present invention may have excellent performance. For example, the display device may remove a moire phenomenon and may provide a 3D image of excellent quality. In addition, the display device may provide a 2D image and a 3D image by switching. The display device may be easily applied to a small as well as a large display device such as a smart phone.

1 is a perspective view of a display device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the display device of FIG. 1 .

3 and 4 are plan views of a display unit of the display device of FIG. 1 .

5 is a perspective view of a lens unit of the display device of FIG. 1 .

6 is a plan view of the lens unit of FIG. 4 .

7 is a cross-sectional view taken along line I-I' of the lens unit of FIG. 4 .

8 is a perspective view of a lens unit according to another embodiment of the present invention.

9 is a plan view of the lens unit of FIG. 8 .

10 is a cross-sectional view taken along line I-I' of the lens unit of FIG. 8 .

Hereinafter, the present invention will be described in detail through examples. Objects, features and advantages of the present invention will be easily understood through the following examples. The present invention is not limited to the embodiments described herein, and may be embodied in other forms. The embodiments introduced herein are provided so that the disclosed content can be thorough and complete, and the spirit of the present invention can be sufficiently conveyed to those of ordinary skill in the art to which the present invention pertains. Therefore, the present invention should not be limited by the following examples.

Although terms such as first, second, etc. are used herein to describe various elements, the elements should not be limited by these terms. These terms are only used to distinguish the elements from each other. Also, when an element is referred to as being over another element, it means that it may be formed directly over the other element or that a third element may be interposed therebetween.

In the drawings, the size of the elements, or the relative sizes between the elements, may be exaggerated for a clearer understanding of the present invention. In addition, the shape of the element shown in the drawings may be slightly changed due to variations in the manufacturing process, or the like. Accordingly, the embodiments disclosed in the present specification should not be limited to the shapes shown in the drawings unless otherwise noted, but should be understood to include some degree of deformation.

1 is a perspective view of a display device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the display device of FIG. 1 , and FIGS. 3 and 4 are plan views of a display unit of the display device of FIG. 1 . FIG. 5 is a perspective view of the lens unit of the display device of FIG. 1 , FIG. 6 is a plan view of the lens unit of FIG. 4 , and FIG. 7 is a cross-sectional view of the lens unit of FIG. 4 .

1 to 7 , the display device 1 includes a display unit 10 and a lens unit 20 .

The display unit 10 includes a plurality of pixels 110 arranged in a first direction (a-axis direction, hereinafter referred to as a) and a second direction (b-axis direction, hereinafter referred to as b) intersecting the first direction (a). ) is included. For example, the angle between the first direction (a) and the second direction (b) is 90°. The pixel 110 may include a plurality of

sub-pixels

111 , 112 , and 113 . For example, the

sub-pixels

111 , 112 , and 113 may include red sub-pixels 111 and R, green sub-pixels 112 and G, and blue sub-pixels 113 and B.

The lens unit 20 is disposed on the display unit 10 and refracts light emitted from the display unit 10 . The lens unit 20 may include a light refraction unit 21 and a support unit 25 .

The lens unit 20 extends in a third direction (c-axis direction, hereinafter referred to as c) intersecting the first direction (a) and the second direction (b) and includes a light refraction unit 21 that refracts the light. include For example, an angle formed between the first direction (a) and the third direction (c) is 71.57°, and an angle formed between the second direction (b) and the third direction (c) is 18.43°. Also, the light refraction part 21 may have a width corresponding to the size of a pair of pixels, and the width may be 100 to 150 µm, for example, 120.18 µm or 147.82 µm. In addition, the light refraction portion 21 may have a height of about 30 μm.

The light refraction unit 21 may include a first light refraction unit 211 and a second light refraction unit 212 that refract the light in different directions. The first light refraction unit 211 may refract the light to the left, and the second light refraction unit 212 may refract the light to the right. The first optical refractive part 211 and the second optical refractive part 212 may form a symmetry with respect to the third direction (c). The light refraction part 21 may have an upward convex shape. For example, the light refraction part 21 may have a semi-circular or semi-elliptical cross-section in the first direction (a).

The support part 25 may be disposed on the display part 10 and support the light refraction part 21 .

The lens unit 20 may include polyurethane acrylate (PUA), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), poly(pentabromophenyl methacrylate), and polythiomethacrylate. , polycarbonate (polycarbonate), polyimide (polyimide), may be formed of a polymer material having a polarization property. The light refraction part 21 and the support part 25 may be formed of the same material or may be formed of different materials.

The display unit 10 may include a first pixel area 10a disposed under the first light refractive unit 211 and a second pixel area disposed under the second light refractive unit 212 . The plurality of pixels 110 may include a plurality of first image pixels 110a disposed in the first pixel area 10a and a plurality of second image pixels 110b disposed in the second pixel area 10b. have.

The display unit 10 may provide a 3D image including a left-eye image and a right-eye image by dividing the source image. The plurality of first image pixels 110a may provide the left eye image, and the plurality of second image pixels 110b may provide the right eye image.

Although not shown in the drawings, the display unit 10 may further include an encoding editor that divides the source image into sub-pixel units.

The first image pixel 110a may include a plurality of

first image subpixels

111a, 112a, and 113a, and the second image pixel 110b includes a plurality of

second image subpixels

111b, 112b, and 113b. may include. The source image may be divided into sub-pixel units and then rearranged to correspond to the first image sub-pixels 111a, 112a, and 113a and the second image sub-pixels 111b, 112b, and 113b.

For example, the source image divided into sub-pixels 111,R of the first pixel 110,R,G,B in the second row in FIG. 3 is the first image pixel 110a,G,B in the second row in FIG. The position is changed to the sub-pixels 113a and R of R) and provided as a left-eye image. In addition, the source image divided into sub-pixels 111,R of the second pixel 110,R,G,B in the second row in FIG. 3 is the second image pixel 110b,G,B,R in the second row in FIG. ) is changed to the sub-pixels 113b and R and provided as a right-eye image. That is, after the source image is divided into sub-pixel units, the first image sub-pixels 111a, 112a, and 113a of the first image pixel 110a corresponding to the first optical refractive unit 211 and the second optical refractive unit ( The positions of the

second image subpixels

111b, 112b, and 113b of the second image pixel 110b corresponding to 212 are changed and provided. Accordingly, the display device 1 can remove the moire phenomenon and provide a 3D image with excellent image quality.

Also, the display device 1 may provide a 2D image when the source image is provided as it is in original pixels. Accordingly, the display apparatus 1 may provide a 2D image and a 3D image by switching. In addition, the display device 1 may be applied to various display devices for realizing images, such as LCD, LED, OLED, and PDP.

8 is a perspective view of a lens unit according to another embodiment of the present invention, FIG. 9 is a plan view of the lens unit of FIG. 8, and FIG. 10 is a cross-sectional view of the lens unit of FIG. 8 .

8 to 10 , the light refraction part 21 may have a triangular cross-section in the first direction. In the present embodiment, the cross section of the light refraction part 21 is triangular, but is not limited thereto, and may be polygonal.

So far, specific embodiments of the present invention have been described. Those of ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Claims

a display unit including a plurality of pixels arranged in a first direction and a second direction intersecting the first direction; and

It is disposed on the display unit and includes a lens unit for refracting light emitted from the display unit,

and the lens unit includes a light refraction unit extending in a third direction intersecting the first direction and the second direction and refracting the light.
The method of claim 1,

The display device according to claim 1, wherein the light refraction unit includes a first light refraction unit and a second light refraction unit for refracting the light in different directions.
3. The method of claim 2,

The display apparatus of claim 1, wherein the first optical refractive part and the second optical refractive part are symmetrical to each other with respect to the third direction.
3. The method of claim 2,

The display unit,

a first pixel area disposed under the first light refraction part; and

and a second pixel area disposed under the second light refraction part.
5. The method of claim 4,

The plurality of pixels,

a plurality of first image pixels disposed in the first pixel area; and

and a plurality of second image pixels disposed in the second pixel area.
6. The method of claim 5,

The display unit provides a 3D image including a left-eye image and a right-eye image by dividing the source image,

the plurality of first image pixels provide the left eye image;

The plurality of second image pixels provide the right eye image.
7. The method of claim 6,

The display unit further comprises an encoding editor that divides the source image into sub-pixel units.
8. The method of claim 7,

the first image pixel comprises a plurality of first image subpixels;

the second image pixel comprises a plurality of second image subpixels;

The display apparatus according to claim 1, wherein the source image is divided into sub-pixel units and then rearranged to correspond to the first image sub-pixel and the second image sub-pixel.
The method of claim 1,

The display device, characterized in that the light refraction portion has an upward convex shape.
10. The method of claim 9,

The light refraction part has a semicircular, semi-elliptical, triangular, or polygonal cross-section in the first direction.
The method of claim 1,

The lens unit is disposed on the display unit, the display device characterized in that it further comprises a support for supporting the light refraction unit.