US 11,860,486 B2
Digital display device comprising two superimposed display cells and timepiece comprising such a display device
Nicolas Blanckaert, Boudry (CH); Jerome Thiault, Colombier (CH); Michel Sagardoyburu, Neuchatel (CH); and Cecile Barron, Corcelles (CH)
Assigned to The Swatch Group Research and Development Ltd, Marin (CH)
Filed by The Swatch Group Research and Development Ltd, Marin (CH)
Filed on Aug. 6, 2020, as Appl. No. 16/986,341.
Claims priority of application No. 19215910 (EP), filed on Dec. 13, 2019.
Prior Publication US 2021/0181571 A1, Jun. 17, 2021
Int. Cl. G02F 1/1343 (2006.01); G02F 1/1335 (2006.01); G04G 9/00 (2006.01); G04G 9/06 (2006.01); G04G 9/12 (2006.01); G04G 17/04 (2006.01); G09G 3/20 (2006.01); G09G 3/18 (2006.01); G09G 3/14 (2006.01); G04G 9/10 (2006.01); H10K 59/38 (2023.01); H10K 59/50 (2023.01); G02F 1/133 (2006.01)
CPC G02F 1/134327 (2013.01) [G02F 1/133514 (2013.01); G02F 1/133528 (2013.01); G02F 1/133555 (2013.01); G04G 9/0094 (2013.01); G04G 9/06 (2013.01); G04G 9/10 (2013.01); G04G 9/12 (2013.01); G04G 17/045 (2013.01); G09G 3/14 (2013.01); G09G 3/18 (2013.01); G09G 3/2003 (2013.01); H10K 59/38 (2023.02); H10K 59/50 (2023.02); G02F 1/13312 (2021.01); G02F 1/133618 (2021.01); G02F 2201/44 (2013.01); G04G 9/107 (2013.01); G04G 9/126 (2013.01); G09G 2300/023 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A digital display device comprising, from top to bottom, a first red filter, a transflective liquid crystal display cell, a second red filter, and an emissive display cell,
wherein the transflective liquid crystal display cell displays information with at least one first seven-segment digit and
wherein the emissive display cell comprises a plurality of juxtaposed light points which are arranged so as to display at least one second seven-segment digit, with two or more of the light points being positioned in each segment of the second seven-segment digit, when the transflective liquid crystal display cell is switched off and the emissive display cell is switched on.