US 12,190,779 B2
Display system with global emission and method for luminance control thereof
Hamidreza Hashempour, Herent (BE); Robbie Thielemans, Nazareth (BE); and Soeren Steudel, Herent (BE)
Assigned to MICLEDI MICRODISPLAYS BV, Leuven (BE)
Filed by MICLEDI MICRODISPLAYS BV, Leuven (BE)
Filed on Dec. 2, 2022, as Appl. No. 18/061,102.
Claims priority of application No. 21213331 (EP), filed on Dec. 9, 2021.
Prior Publication US 2023/0186821 A1, Jun. 15, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/2085 (2013.01) [G09G 3/32 (2013.01); G09G 2310/08 (2013.01); G09G 2320/064 (2013.01); G09G 2360/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display system comprising:
a display panel having a plurality of pixel arrangements, and;
a memory unit operably coupled to the plurality of pixel arrangements and disposed external to the display panel; and
wherein each pixel arrangement comprises:
at least one light emitting unit;
at least one driver circuit operably coupled to the light emitting unit; and
a digital counter circuit operably coupled to the at least one driver circuit; and
wherein the memory unit is configured to load a data value to the digital counter circuit of each pixel arrangement, wherein the data value corresponds to respective frame data per pixel of a frame to be displayed,
wherein the digital counter circuit of each pixel arrangement is configured to store the data value, to perform a counting down of the stored data value, and to toggle a state of the at least one driver circuit upon expiry of the digital counter circuit, thereby toggling a state of the light emitting unit to perform luminance control of the pixel arrangement, and
wherein the digital counter circuit of each pixel arrangement comprises a number of M digital counters, where M is an integer, and wherein when M>1 the M digital counters are symmetrically stacked.