Display panel, and 3D display device and 3D head up display (HUD) device using the display panel

Patent metadata

Field	Value
Publication number	US-11181742-B2
Application number	US-201916567691-A
Country	US
Kind code	B2
Filing date	Sep 11, 2019
Priority date	Oct 5, 2018
Publication date	Nov 23, 2021
Grant date	Nov 23, 2021

Abstract

Provided are a display panel and a three-dimensional (3D) display device and a 3D head-up display (HUD) device using the display panel. The display panel includes a plurality of pixels, and a plurality of placement spaces provided between the plurality of pixels, wherein the plurality of pixels are uniformly provided in the display panel based on a pattern corresponding to the plurality of placement spaces, and wherein a frequency corresponding to a repetition interval of the pattern is outside of a cognitive frequency band that is visible to a user.

First claim

What is claimed is:

1. A display panel comprising:
a plurality of pixels respectively comprising a plurality of sub-pixels, the plurality of sub-pixels included in each pixel of the plurality of pixels determining a shape of each pixel; and
a plurality of placement spaces provided between the plurality of pixels,
wherein the plurality of pixels are uniformly provided in the display panel based on the plurality of placement spaces, the plurality of pixels respectively having a same shape in a horizontal direction and a vertical direction, and forming a pattern repeated at an interval, and
wherein, in a frequency domain of an image obtained by the display panel, a spatial frequency corresponding to the interval of the repeated pattern formed by the plurality of pixels is outside of a cognitive frequency band that is visible to a user, the cognitive frequency band being less than 60 cycle/degree.

2. The display panel of claim 1 , wherein the repeated pattern comprises at least one pixel, and
wherein a structure of subpixels included in the at least one pixel is determined based on each of the plurality of placement spaces in the display panel.

3. The display panel of claim 1 , wherein a structure of subpixels included in each of the plurality of pixels is determined based on each of the plurality of placement spaces that comprise a spacer.

4. The display panel of claim 3 , wherein at least one of the subpixels included in each of the plurality of pixels has a size that is different from sizes of remaining subpixels included in each of the plurality of pixels to correspond to each of the plurality of placement spaces.

5. The display panel of claim 1 , wherein a structure of subpixels included in each of the plurality of pixels is determined based on a combination of shapes, sizes, and gradients of the subpixels.

6. The display panel of claim 1 , wherein the interval of the repeated pattern comprises at least one of a first interval at which the repeated pattern is repeated in the horizontal direction, a second interval at which the repeated pattern is repeated in the vertical direction, and a third interval at which the repeated pattern is repeated in a direction corresponding to a combination of the horizontal direction and the vertical direction.

7. The display panel of claim 1 , wherein the plurality of pixels comprise liquid crystals.

8. A third-dimensional (3D) display device comprising:
a display panel comprising a plurality of pixels and a plurality of placement spaces provided between the plurality of pixels; and
an optical layer configured to control a direction of light incident from the display panel,
wherein the plurality of pixels are uniformly provided in the display panel based on the plurality of placement spaces,
wherein the plurality of pixels respectively comprise a plurality of sub-pixels, the plurality of sub-pixels included in each pixel of the plurality of pixels determining a shape of each pixel,
wherein the plurality of pixels respectively have a same shape in a horizontal direction and a vertical direction, and form a pattern repeated at an interval, and
wherein, in a frequency domain of an image obtained by the display panel, a spatial frequency corresponding to the interval of the repeated pattern formed by the plurality of pixels is outside of a cognitive frequency band that is visible to a user, the cognitive frequency band being less than 60 cycle/degree.

9. The 3D display device of claim 8 , wherein the repeated pattern comprises at least one pixel, and
wherein a structure of subpixels included in the at least one pixel is determined based on each of the plurality of placement spaces in the display panel.

10. The 3D display device of claim 8 , wherein a structure of subpixels included in each of the plurality of pixels is determined based on each of the plurality of placement spaces that comprise a spacer.

11. The 3D display device of claim 10 , wherein at least one of the subpixels included in each of the plurality of pixels has a size that is different from sizes of remaining subpixels included in each of the plurality of pixels to correspond to each of the plurality of placement spaces.

12. The 3D display device of claim 8 , wherein a structure of subpixels included in each of the plurality of pixels is determined based on a combination of shapes, sizes, and gradients of the subpixels.

13. The 3D display device of claim 9 , wherein the interval of the repeated pattern comprises at least one of a first interval at which the repeated pattern is repeated in the horizontal direction, a second interval at which the repeated pattern is repeated in the vertical direction, and a third interval at which the repeated pattern is repeated in a direction corresponding to a combination of the horizontal direction and the vertical direction.

14. A three-dimensional (3D) head-up display (HUD) device comprising:
a display panel comprising a plurality of pixels and a plurality of placement spaces provided between the plurality of pixels;
an optical layer included in a windshield of a vehicle and configured to control a direction of light incident from the display panel; and
at least one processor configured to generate a panel image that is displayed on the display panel based on positions of both eyes of a user to provide a 3D image to the user through the optical layer,
wherein the plurality of pixels are uniformly provided in the display panel based on the plurality of placement spaces,
wherein the plurality of pixels respectively comprise a plurality of sub-pixels, the plurality of sub-pixels included in each pixel of the plurality of pixels determining a shape of each pixel,
wherein the plurality of pixels respectively have a same shape in a horizontal direction and a vertical direction, and form a pattern repeated at an interval, and
wherein a spatial frequency, in a frequency domain of the panel image obtained by the display panel, corresponding to the interval of the repeated pattern of the plurality of pixels is outside of a cognitive frequency band that is visible to the user, the cognitive frequency band being less than 60 cycle/degree.

15. The 3D HUD device of claim 14 , wherein the repeated pattern comprises at least one pixel, and
wherein a structure of subpixels included in the at least one pixel is determined based on each of the plurality of placement spaces in the display panel.

16. The 3D HUD device of claim 14 , wherein a structure of subpixels included in each of the plurality of pixels is determined based on each of the plurality of placement spaces that comprise a spacer.

17. The 3D HUD device of claim 16 , wherein at least a portion of the subpixels included in each of the plurality of pixels has a size that is different from sizes of remaining subpixels included in each of the plurality of pixels to correspond to each of the plurality of placement spaces.

18. The 3D HUD device of claim 14 , wherein a structure of subpixels included in each of the plurality of pixels is determined based on a combination of shapes, sizes, and gradients of the subpixels.

19. The 3D HUD device of claim 14 , wherein the interval of the repeated pattern comprises at least one of a first interval at which the repeated pattern is repeated in the horizontal direction, a second interval at which the repeated pattern is repeated in the vertical direction, and a third interval at which the repeated pattern is repeated in a direction corresponding to a combination of the horizontal direction and the vertical dire

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kang Byong Min
• Choi Yoonsun
• Nam Dong Kyung
• Park Juyong
• Lee Jinho

Classifications

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• H04N13/305

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• G02B30/27

  involving lenticular arrays · CPC title

• G02B27/0172 Primary

  characterised by optical features · CPC title

• G02B30/29 Primary

  characterised by the geometry of the lenticular array, e.g. slanted arrays, irregular arrays or arrays of varying shape or size · CPC title