Display device

Patent metadata

Field	Value
Publication number	US-2019079352-A1
Application number	US-201816123985-A
Country	US
Kind code	A1
Filing date	Sep 6, 2018
Priority date	Sep 11, 2017
Publication date	Mar 14, 2019
Grant date	—

Abstract

A display device includes: a liquid crystal layer disposed between a first substrate and a second substrate; a color conversion layer disposed between the first substrate and the second substrate and including a first light emitter configured to absorb first color light outputted from a light source and to emit second color light that is different from the first color light; a pixel electrode overlapping a display area; a first transistor connected to the pixel electrode; a driving circuit including a second transistor and providing a driving signal to the first transistor; a light blocking member disposed on the first substrate and overlapping the first transistor; and an polarizing layer disposed between the liquid crystal layer and the color conversion layer and including a wire grid pattern overlapping the display area and a reflection pattern extending from the wire grid pattern to overlap the non-display area.

First claim

What is claimed is:

1 . A display device comprising:
a display panel having a display area and a non-display area; and a light source configured to output a first color light to the display panel, wherein the display panel comprises: a first substrate; a second substrate facing the first substrate and disposed farther from the light source than the first substrate; a liquid crystal layer between the first substrate and the second substrate; a color conversion layer between the liquid crystal layer and the second substrate and comprising a first light emitter configured to absorb a first color light outputted from the light source and to emit a second color light that is different from the first color light; a pixel electrode overlapping the display area and disposed between the first substrate and the second substrate; a first transistor connected to the pixel electrode; a driving circuit comprising a second transistor overlapping the non-display area, and providing a driving signal to the first transistor; a light blocking member on the first substrate and overlapping the first transistor; and an polarizing layer between the liquid crystal layer and the color conversion layer, and comprising a wire grid pattern overlapping the display area and a reflection pattern extending from the wire grid pattern to overlap the non-display area, wherein the light blocking member has the same color component as the second color light.

2 . The display device of claim 1 , wherein
the color conversion layer comprises: a conversion unit overlapping the display area and comprising the first light emitter; and a dummy conversion unit overlapping the non-display area.

3 . The display device of claim 2 , wherein
the dummy conversion unit fully overlaps the reflection pattern.

4 . The display device of claim 2 , wherein
the color conversion layer further comprises a second light emitter configured to absorb the first color light and to emit a third color light that is different from the second color light.

5 . The display device of claim 4 , wherein
the dummy conversion unit comprises any one of the first light emitter and the second light emitter.

6 . The display device of claim 4 , wherein
the conversion unit comprises: a first conversion unit comprising the first light emitter; a second conversion unit comprising the second light emitter; and a third conversion unit configured to transmit the first color light.

7 . The display device of claim 6 , wherein
the first to third conversion units are disposed to be spaced apart from each other when viewed in a plane, and the color conversion layer further comprises a blocking member disposed between the first to third conversion units that are spaced apart from each other.

8 . The display device of claim 6 , wherein
the color conversion layer further comprises an optical filter unit configured to reflect the first color light.

9 . The display device of claim 8 , wherein
the optical filter unit comprises: a first optical filter unit on the first conversion unit and configured to transmit the second color light; and a second optical filter on the second conversion unit and configured to transmit the third color light.

10 . The display device of claim 4 , wherein
the particle size of the first light emitter is different from the particle size of the second light emitter.

11 . The display device of claim 2 , wherein
the light blocking member comprises: a first light blocking member overlapping the first transistor; and a second light blocking member overlapping the second transistor.

12 . The display device of claim 11 , wherein
each of the first light blocking member and the second light blocking member has a red component to block blue light.

13 . The display device of claim 12 , wherein
the dummy conversion unit comprises the first light emitter, and wherein the first color light is blue light, and the second color light is red light.

14 . The display device of claim 11 , further comprising
a first column spacer on the first light blocking member; and a second column spacer on the second light blocking member.

15 . The display device of claim 1 , further comprising
a sealing member overlapping the non-display area and connecting the first substrate to the second substrate, wherein the reflection pattern overlaps the remaining non-display area other than the area of the non-display area overlapping sealing member.

16 . The display device of claim 1 , further comprising
a light control layer between the color conversion layer and the polarizing layer, and configured to transmit the first color light and reflect the second color light.

17 . The display device of claim 16 , wherein
the first color light is blue light, and the second color light is any one of green light and red light.

18 . The display device of claim 1 , wherein
the polarizing layer further comprises a protection pattern on the reflection pattern and on the wire grid pattern.

19 . The display device of claim 1 , wherein
the color conversion layer comprises a conversion unit overlapping the display area and comprising the first light emitter, wherein the conversion unit comprises: a first conversion unit comprising the first light emitter; a second conversion unit comprising a second light emitter configured to absorb the first color light and to emit a third color light that is different from the second color; and a third conversion unit configured to transmit the first color light.

20 . A display device comprising:
a display panel having a display area and a non-display area; and a light source configured to output a first color light to the display panel, wherein the display panel comprises: a first substrate; a second substrate facing the first substrate and disposed farther from the light source than the first substrate; a color conversion unit on the second substrate, overlapping the display area, and configured to absorb the first color light outputted from the light source and to emit a second color light that is different from the first color light; a first polarizing layer on the color conversion unit and comprising a wire grid pattern overlapping the display area and a reflection pattern extending from the wire grid pattern to overlap the non-display area; and a second polarizing layer under the first substrate, wherein a dummy conversion unit fully overlaps the reflection pattern.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Keunwoo
• Kong Taejin
• Yoon Yeogeon
• Lee Hee-Keun

Classifications

• G02F1/133617 Primary

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/13394

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

• G02F1/133528 Primary

  Polarisers · CPC title