Display device

Patent metadata

Field	Value
Publication number	US-10459277-B2
Application number	US-201715638689-A
Country	US
Kind code	B2
Filing date	Jun 30, 2017
Priority date	Sep 29, 2016
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

A display device includes a base portion including a pixel area including a light-transmitting area and a light-blocking area; a projection portion disposed on the light-blocking area of the base portion and including a first sub-color filter and a second sub-color filter overlapping over an overlap area; a light-blocking member disposed on the projection portion and overlapping the base portion; and a spacing member disposed on the light-blocking member, made of the same material as the light-blocking member and overlapping the projection portion. The first sub-color filter includes a first color pigment, the second sub-color filter includes a second color pigment different from the first color pigment, a first width of the first sub-color filter in a first direction is different from a second width of the second sub-color filter in the first direction, a third width of the first sub-color filter in a second direction is different from a fourth width of the second sub-color filter in the second direction, and the second direction is a direction intersecting the first direction.

First claim

What is claimed is:

1. A display device, comprising:
a base portion including a pixel area that includes a light-transmitting area and a light-blocking area;
a projection portion disposed on the light-blocking area of the base portion, the projection portion including a first projection portion comprising a plurality of sub-color filters including a first sub-color filter and a second sub-color filter overlapping the first sub-color filter over an overlap area and a second projection portion comprising at least one of the plurality of sub-color filters;
a light-blocking member disposed on the projection portion and overlapping the base portion; and
a spacing member disposed on the light-blocking member, the spacing member being made of the same material as the light-blocking member and overlapping the first projection portion; and
a subsidiary spacing member disposed on the light-blocking member, the subsidiary spacing member being made of the same material as the light-blocking member and overlapping the second projection portion,
wherein the first sub-color filter includes a first color pigment,
the second sub-color filter includes a second color pigment different from the first color pigment,
a first width of the first sub-color filter in a first direction is different from a second width of the second sub-color filter in the first direction,
a third width of the first sub-color filter in a second direction is different from a fourth width of the second sub-color filter in the second direction,
the second direction is a direction intersecting the first direction,
a first height of the spacing member measured based on a surface of the base portion is higher than a second height of the subsidiary spacing member measured based on the surface of the base portion, and
wherein a number of the plurality of sub-color filters included in the first projection portion is more than a number of the at least one of the plurality of sub-color filters included in the second projection portion.

2. The display device of claim 1 ,
wherein the first width is smaller than the second width, and the third width is larger than the fourth width.

3. The display device of claim 2 ,
wherein a maximum width of the overlap area in the first direction is substantially equal to the first width, and
a maximum width of the overlap area in the second direction is substantially equal to the fourth width.

4. The display device of claim 1 ,
wherein the first width is larger than the second width, and the third width is larger than the fourth width.

5. The display device of claim 4 ,
wherein a maximum width of the overlap area in the first direction is substantially equal to the second width, and
a maximum width of the overlap area in the second direction is substantially equal to the fourth width.

6. The display device of claim 1 , further comprising:
a color filter disposed on the light-transmitting area of the base portion,
wherein the color filter includes the first color pigment.

7. The display device of claim 6 ,
wherein the first sub-color filter is connected to the color filter.

8. The display device of claim 7 ,
wherein the second sub-color filter is spaced from the color filter.

9. The display device of claim 1 , further comprising:
a color filter disposed on the light-transmitting area of the base portion,
wherein the first sub-color filter and the second sub-color filter are spaced from the color filter.

10. The display device of claim 1 , further comprising:
a switching element disposed on the light-blocking area of the base portion, the switching element overlapping the projection portion and the spacing member; and
a passivation layer disposed on the switching element,
wherein the light-blocking member is disposed on the passivation layer, and
the projection portion is disposed between the passivation layer and the light-blocking member.

11. The display device of claim 10 , further comprising:
a color filter disposed on the passivation layer and overlapping the light-transmitting area of the base portion; and
a pixel electrode disposed on the color filter and connected to the switching element through a contact hole formed in the passivation layer,
wherein the projection portion does not overlap the contact hole.

12. The display device of claim 11 ,
wherein the color filter does not overlap the contact hole.

13. The display device of claim 11 ,
wherein the light-blocking member is partially in direct contact with the passivation layer.

14. A display device, comprising:
a base portion including a first pixel area that includes a first light-transmitting area and a first light-blocking area and a second pixel area that includes a second light-transmitting area and a second light-blocking area;
a projection portion disposed on the first light-blocking area of the base portion, the projection portion including a first sub-color filter and a second sub-color filter overlapping the first sub-color filter;
a third sub-color filter disposed on the second light-blocking area of the base portion;
a first light-blocking member disposed on the projection portion and overlapping the first light-blocking area of the base portion;
a second light-blocking member disposed on the third sub-color filter and overlapping the second light-blocking area of the base portion;
a spacing member disposed on the first light-blocking member, the spacing member being made of the same material as the first light-blocking member and overlapping the projection portion; and
a subsidiary spacing member disposed on the second light-blocking member, the subsidiary spacing member being made of the same material as the second light-blocking member and overlapping the third sub-color filter,
wherein the first sub-color filter includes a first color pigment,
the second sub-color filter includes a second color pigment different from the first color pigment,
a first width of the first sub-color filter in a first direction is different from a second width of the second sub-color filter in the first direction,
a third width of the first sub-color filter in a second direction is different from a fourth width of the second sub-color filter in the second direction,
the second direction is a direction intersecting the first direction, and
a first height of the spacing member measured based on a surface of the base portion is higher than a second height of the subsidiary spacing member measured based on the surface of the base portion.

15. The display device of claim 14 ,
wherein the spacing member is integrated with the first light-blocking member, and the subsidiary spacing member is integrated with the second light-blocking member.

16. The display device of claim 15 ,
wherein the first light-blocking member and the second light-blocking member are made of the same material.

17. The display device of claim 16 ,
wherein the first light-blocking member and the second light-blocking member are integrated with each other.

18. The display device of claim 14 ,
wherein a first height of the projection portion measured based on the surface of the base portion is higher than a second height of the third sub-color filter member measured based on the surface of the base portion.

19. The display device of claim 14 , further comprising:
a first color filter disposed on the first light-transmitting area of the base portion and including the first color pigment; and
a second color filter disposed on the second light-transmitting

Assignees

• Samsung Display Co Ltd

Inventors

• Joo Sun Kyu
• Kim Su Jeong
• Ryu Jang Wi
• Shim Yi Seop
• Oh Keun Chan
• Lyu Jae Jin
• Lee Jun Woo
• Jang Chang Soon
• Cho Young Bong
• Huh Chul

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/13

  based on liquid crystals, e.g. single liquid crystal display cells · CPC title

• G02F1/13394 Primary

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

• G02F1/0136

  for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation (G02F1/0353 takes precedence) · CPC title

• G02F1/136209 Primary

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title