US 11,953,782 B2
Display panel including composite sheet
Inwha Lee, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 1, 2022, as Appl. No. 18/073,428.
Claims priority of application No. 10-2021-0189573 (KR), filed on Dec. 28, 2021.
Prior Publication US 2023/0205004 A1, Jun. 29, 2023
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/133606 (2013.01) [G02F 1/133311 (2021.01); G02F 1/133603 (2013.01); G02F 2202/28 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display panel comprising:
a display panel layer;
a composite sheet layer directly attached to a bottom of the display panel layer;
a case configured to form external appearances of the display panel layer and the composite sheet layer, the case including at least a cover bottom disposed under the composite sheet layer, a case top a part of which is disposed over the display panel layer, and a guide panel disposed between the cover bottom and the case top; and
a plurality of light source modules disposed on a top surface of the cover bottom under the composite sheet layer;
wherein the composite sheet layer comprises:
an adhesive layer comprising a plurality of beads; and
a light diffusion layer disposed below the adhesive layer,
wherein the adhesive layer and the light diffusion layer overlap the plurality of light source modules in a plan view of the display panel,
wherein a bottom surface of the composite sheet layer is not in contact with the cover bottom of the case such that a hollow space is formed between the plurality of light source modules and the composite sheet layer, light from the plurality of light source modules being irradiated from the plurality of light source modules on the top surface of the cover bottom toward the bottom surface of the composite sheet layer via the hollow space.