Display device

Patent metadata

Field	Value
Publication number	US-2024160064-A1
Application number	US-202218280117-A
Country	US
Kind code	A1
Filing date	Feb 16, 2022
Priority date	May 24, 2021
Publication date	May 16, 2024
Grant date	—

Abstract

A display device of the present disclosure includes: a display panel; a frame which is positioned in a rearward direction of the display panel, and to which the display panel is coupled; a substrate which is positioned between the display panel and the frame, and fixed to the frame; a plurality of light sources mounted on the substrate to form a row and a column; a reflective sheet which is positioned on the substrate, and has a plurality of holes through which each of the plurality of light sources passes; and a light pattern which is formed on the reflective sheet, and converts a color of a light provided by the plurality of light sources, wherein the reflective sheet includes: a first hole positioned adjacent to an edge of the reflective sheet; a second hole which is positioned adjacent to the first hole and positioned farther than the first hole from the edge of the reflective sheet; a first area positioned around the first hole; and a second area positioned around the second hole, wherein the light pattern includes: a first light pattern positioned in the first area; and a second light pattern positioned in the second area, wherein an area of the first light pattern is larger than an area of the second light pattern.

First claim

1 - 15 . (canceled)

16 . A display device comprising:
a display panel; a frame coupled at a rear of the display panel; a substrate coupled to the frame and positioned between the display panel and the frame; a plurality of light sources mounted on the substrate; a reflective sheet at a front of the substrate and comprising a plurality of holes corresponding to the plurality of light sources; and a plurality of light patterns formed on the reflective sheet and configured to convert a color of light provided by the plurality of light sources, wherein: the reflective sheet comprises a first area positioned adjacent to an edge of the reflective sheet and a second area positioned further inward from the first area; a first hole of the plurality of holes positioned in the first area; and a second hole of the plurality of holes positioned in the second area, wherein the plurality of light patterns comprises a first light pattern positioned in the first area and a second light pattern positioned in the second area, and wherein an area of the first light pattern is larger than an area of the second light pattern.

17 . The display device of claim 16 , wherein the plurality of light sources are configured to emit blue-based light, and
wherein the plurality of light patterns comprise a green-based phosphor or a red-based phosphor to convert the blue-based light emitted from the plurality of light sources.

18 . The display device of claim 17 , wherein the first hole is one of a plurality of first holes comprising:
a corner hole positioned adjacent to a corner of the reflective sheet; and a side hole positioned further from the corner of the reflective sheet than the corner hole, and wherein the first light pattern comprises: a curved line positioned between the corner of the reflective sheet and the corner hole; and a line positioned between the edge of the reflective sheet and the side hole.

19 . The display device of claim 18 , wherein the first light pattern further comprises:
a first plurality of dots disposed around the corner hole; and a second plurality of dots disposed around the side hole, wherein a number of the first plurality of dots is greater than a number of the second plurality of dots.

20 . The display device of claim 17 , wherein the first light pattern comprises a first plurality of dots disposed along a circumference of the first hole, and
wherein the second light pattern comprises a second plurality of dots disposed along a circumference of the second hole, wherein a number of the first plurality of dots is the same as a number of the second plurality of dots, and wherein a size of each of the first plurality of dots is larger than a size of each of the second plurality of dots.

21 . The display device of claim 20 , wherein the reflective sheet further comprises:
a third area positioned further inward from the second area; and a third hole of the plurality of holes positioned in the third area, wherein the light pattern further comprises a third light pattern positioned in the third area and comprising a third plurality of dots disposed along a circumference of the third hole, wherein a number of the third plurality of dots is less than the number of the second plurality of dots, or a size of each of the third plurality of dots is smaller than the size of each of the second plurality of dots.

22 . The display device of claim 17 , wherein the first light pattern comprises a first plurality of dots disposed along a circumference of the first hole,
wherein the second light pattern comprises a second plurality of dots disposed along a circumference of the second hole, wherein a number of the first plurality of dots is the same as a number of the second plurality of dots, wherein a size of each of the first plurality of dots is larger than or equal to a size of each of the second plurality of dots, and wherein the first light pattern further comprises a line positioned between the edge of the reflective sheet and the first plurality of dots.

23 . The display device of claim 17 , wherein the first light pattern comprises a curved line disposed along a circumference of the first hole, and
wherein the second light pattern comprises a plurality of dots disposed along a circumference of the second hole.

24 . The display device of claim 23 , wherein the curved line has a ring shape having an open portion, and
wherein the open portion of the curved line faces an edge of the reflective sheet.

25 . The display device of claim 17 , wherein the first light pattern comprises a first plurality of dots and a curved line disposed along a circumference of the first hole, and
wherein the second light pattern comprises a second plurality of dots disposed along a circumference of the second hole.

26 . The display device of claim 25 , wherein the curved line is positioned between the first hole and the edge of the reflective sheet, and
wherein the first plurality of holes are positioned opposite to the curved line with respect to the first hole.

27 . The display device of claim 17 , wherein the first hole is one of a plurality of first holes comprising:
a corner hole positioned adjacent to a corner of the reflective sheet; and a side hole positioned further from the corner of the reflective sheet than the corner hole, wherein the first light pattern comprises: a first plurality of dots positioned along a circumference of the corner hole; a second plurality of dots positioned along a circumference of the side hole; and a third plurality of dots positioned between the corner hole and the side hole, wherein a number of the first plurality of dots is the same as a number of the second plurality of dots, and wherein a number of the third plurality of dots is less than the number of the first plurality of dots.

28 . The display device of claim 27 , wherein the third plurality of holes are arranged along an intermediate area between the corner hole and the side hole that extends in a direction perpendicular to the edge of the reflective sheet.

29 . The display device of claim 27 , wherein the third plurality of holes are arranged in an intermediate area between the corner hole and the side hole that forms a triangle.

30 . The display device of claim 16 , further comprising an optical sheet which is positioned between the plurality of light sources and the display panel, and comprises a green-based phosphor and a red-based phosphor.

Assignees

• Lg Electronics Inc

Inventors

• Park Jihee
• Yoon Jihye
• LEE Kilhoon
• Jeong Kiryong
• Kim Keonwoo
• Jung Nayeon

Classifications

• G02F1/133609

  including means for improving the color mixing, e.g. white · CPC title

• G02F1/133611 Primary

  including means for improving the brightness uniformity · CPC title

• G02F1/133606 Primary

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02F1/133314

  Back frames · CPC title

• G02F1/133614

  using photoluminescence, e.g. phosphors illuminated by UV or blue light · CPC title