US 11,918,096 B2
Color change module using reflective display, and independent type color change control apparatus
Soon Hyung Kwon, Seongnam-si (KR)
Assigned to KOREA ELECTRONICS TECHNOLOGY INSTITUTE, Seongnam-si (KR)
Filed by KOREA ELECTRONICS TECHNOLOGY INSTITUTE, Seongnam-si (KR)
Filed on Feb. 8, 2021, as Appl. No. 17/169,991.
Claims priority of application No. 10-2020-0017835 (KR), filed on Feb. 13, 2020.
Prior Publication US 2021/0251365 A1, Aug. 19, 2021
Int. Cl. A45D 31/00 (2006.01); G02F 1/1335 (2006.01); G02F 1/167 (2019.01); G09F 19/20 (2006.01)
CPC A45D 31/00 (2013.01) [G02F 1/133557 (2021.01); G02F 1/167 (2013.01); G09F 19/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A color change module using a reflective display, the color change module comprising:
a module base having a shape corresponding to a shape of an object over which the color change module is to be attached;
the reflective display provided over an upper surface of the module base, and configured to display information in a manner wherein light coming from outside is reflected, the reflective display comprising:
a lower electrode layer,
a reflective display layer disposed over the lower electrode layer and comprising one or more cells each containing multiple particles that are charged with different polarities and differ in quantity of electric charge or in size, the multiple particles comprising a plurality of first particles each having a positive electric charge and a plurality of second particles each having a negative charge,
an upper electrode layer disposed over the reflective display layer; and
a first external electrode and a second external electrode provided to be connected to the reflective display and to be exposed to outside, the first external electrode and the second external electrode being configured to receive electrical signals from an external apparatus, the first external electrode and the second external electrode being connected to the lower electrode layer and the upper electrode layer, respectively, to transmit the electrical signals so as to change color of the reflective display,
wherein the reflective display layer of the reflective display is divided into multiple sections each comprising one of the one or more cells, each of which contains the multiple particles such that when different electric signals are applied to the multiple sections, the multiple sections display different colors.