US 12,135,913 B2
Display apparatus
Jinho Kim, Suwon-si (KR); Yong-Sang Kim, Suwon-si (KR); Jongsu Oh, Suwon-si (KR); Eun Ho Kim, Suwon-si (KR); Seungran Park, Suwon-si (KR); Sara Hong, Suwon-si (KR); and Donggun Oh, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed on Jul. 26, 2022, as Appl. No. 17/873,948.
Application 17/873,948 is a continuation of application No. PCT/KR2022/007407, filed on May 25, 2022.
Claims priority of application No. 10-2021-0092494 (KR), filed on Jul. 14, 2021; and application No. 10-2022-0004255 (KR), filed on Jan. 11, 2022.
Prior Publication US 2023/0018546 A1, Jan. 19, 2023
Int. Cl. G09G 3/3266 (2016.01); G06F 3/147 (2006.01); G09G 3/32 (2016.01); G09G 3/3233 (2016.01); G09G 5/12 (2006.01); H05B 33/02 (2006.01)
CPC G06F 3/147 (2013.01) [G09G 3/32 (2013.01); G09G 2300/0819 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0633 (2013.01); G09G 2320/064 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a modular display panel comprising a plurality of display modules disposed in a matrix form; and
a timing controller,
wherein each of the plurality of display modules comprises:
a display panel comprising a pixel array in which pixels each composed of a plurality of inorganic light emitting elements are arranged in a plurality of row lines, and sub-pixel circuits respectively corresponding to inorganic light emitting elements of the pixel array; and
a driver comprising a data driver configured to provide data driver signals to the sub-pixel circuits and a gate driver configured to drive the sub-pixel circuits in an order of the plurality of row lines based on a start signal provided from the timing controller,
wherein the timing controller is further configured to:
provide a first start signal to the gate driver of a first display module among the plurality of display modules to control the inorganic light emitting elements of the first display module to sequentially emit light from a first row line of the first display module to a last row line of the first display module, according to first data driver signals provided by the data driver of the first display module, and
provide a second start signal to the gate driver of a second display module disposed adjacent to a bottom of the first display module to control the inorganic light emitting elements of the second display module to sequentially emit light from a first row line of the second display module to a last row line of the second display module, according to second data driver signals provided by the data driver of the second display module,
wherein the modular display panel is configured to be driven in a first mode such that during one frame time, the second start signal is provided to the gate driver of the second display module after the first start signal is provided to the gate driver of the first display module, and a data setting section successively proceeds from a first row line of a display module disposed uppermost to a last row line of a display module disposed lowermost in a same column line of the modular display panel during one frame time, and
wherein the modular display panel is configured to be driven in a second mode such that the data setting section of each of the plurality of display modules proceeds simultaneously,
wherein each of the sub-pixel circuits comprises:
a constant current generator circuit which comprises a first driving transistor and is configured to provide a constant current to a corresponding inorganic light-emitting element based on a constant current generator data voltage; and
a PWM circuit which comprises a second driving transistor and is configured to control a time during which the constant current is provided to the corresponding inorganic light-emitting element based on the PWM data voltage, and
wherein the first driving transistor, the second driving transistor and the corresponding inorganic light-emitting element are connected in series.