US 11,948,503 B2
Display optimization techniques for micro-LED devices and arrays
Gholamreza Chaji, Waterloo (CA)
Assigned to VueReal Inc., Waterloo (CA)
Filed by VueReal Inc., Waterloo (CA)
Filed on Mar. 3, 2023, as Appl. No. 18/178,157.
Application 18/178,157 is a continuation of application No. 17/494,399, filed on Oct. 5, 2021, granted, now 11,610,535.
Application 17/494,399 is a continuation of application No. 17/015,024, filed on Sep. 8, 2020, granted, now 11,164,512, issued on Nov. 2, 2021.
Application 17/015,024 is a continuation of application No. 16/126,444, filed on Sep. 10, 2018, abandoned.
Claims priority of provisional application 62/556,608, filed on Sep. 11, 2017.
Prior Publication US 2023/0206829 A1, Jun. 29, 2023
Int. Cl. G09G 3/32 (2016.01); G09G 3/20 (2006.01); H01L 21/66 (2006.01); H01L 33/50 (2010.01); H01L 25/075 (2006.01)
CPC G09G 3/32 (2013.01) [G09G 3/2014 (2013.01); H01L 22/24 (2013.01); H01L 33/502 (2013.01); G09G 3/2003 (2013.01); G09G 2300/0452 (2013.01); G09G 2310/0264 (2013.01); H01L 25/0753 (2013.01); H01L 2933/0041 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
an array of pixels, wherein each pixel includes a plurality of sub-pixels arranged in a matrix; and
a driving circuitry configured to provide an individual emission control signal to each sub-pixel of each pixel in the array of pixels to independently control an emission time and a duty cycle of each sub-pixel, the emission time of said each sub-pixel is Tf*Bfull/Bmj, wherein Tf is a frame time of a frame, Bfull is a brightness of the display device when said each sub-pixel is on an optimized current density during the frame time, and Bmj is a major brightness during frame time;
wherein each row of the array of pixels is accessed twice during the frame time, the frame includes a first subframe and a second subframe following the first subframe, the first subframe is divided into a first emission time period and no emission time period following the first emission time period, and the second subframe is divided into a second emission time period and no emission time period following the second emission time period;
wherein the first emission time period is indicative of a first grayscale, the second emission time period is indicative of a second grayscale, the second grayscale is higher than the first grayscale.