US 12,230,202 B2
Display driving circuit and display device
Xiufeng Zhou, Shenzhen (CN); Xin Yuan, Shenzhen (CN); and Haijiang Yuan, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Filed by HKC CORPORATION LIMITED, Shenzhen (CN)
Filed on Dec. 22, 2022, as Appl. No. 18/087,771.
Claims priority of application No. 202210745363.2 (CN), filed on Jun. 27, 2022.
Prior Publication US 2023/0419899 A1, Dec. 28, 2023
Int. Cl. G09G 3/3233 (2016.01); H10K 59/131 (2023.01)
CPC G09G 3/3233 (2013.01) [H10K 59/131 (2023.02); G09G 2300/0819 (2013.01); G09G 2310/0202 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A display driving circuit, comprising a plurality of pixel circuits;
wherein a data end of each pixel circuit is connected to a corresponding data line, and the data end is configured to provide a data signal; a gate end of each pixel circuit is connected to a corresponding gate line, and the gate end is configured to provide a gate signal; and a power supply end of each pixel circuit is connected to a same power supply common line;
the plurality of pixel circuits are divided into at least one first pixel circuit and at least one second pixel circuit, and a luminous efficiency of each of the at least one first pixel circuit is less than a luminous efficiency of each of the at least one second pixel circuit; a width-to-length ratio of a channel of a thin-film field-effect transistor in a driving module of each of the at least one first pixel circuit is greater than a width-to-length ratio of a channel of a thin-film field-effect transistor in a driving module of each of the at least one second pixel circuit,
wherein a power supply line is a connection line between the power supply end of a corresponding pixel unit and the power supply common line; the number of the at least one first pixel circuit is at least two, and the at least one first pixel circuit have a same luminous efficiency; the at least one first pixel circuit are divided into at least one first-class pixel circuit and at least one second-class pixel circuit; each of the at least one first-class pixel circuit is a blue pixel circuit, each of the at least one second-class pixel circuit is a blue pixel circuit, a length of the power supply line of each of the at least one first-class pixel circuit is greater than a length of the power supply line of each of the at least one second-class pixel circuit; the width-to-length ratio of the channel of the thin-film field-effect transistor in the driving module of each of the at least one first-class pixel circuit is greater than the width-to-length ratio of the channel of the thin-film field-effect transistor in the driving module of each of the at least one second-class pixel circuit,
wherein a ratio between the length of the power supply line of each of the at least one first-class pixel circuit and the length of the power supply line of each of the at least one second-class pixel circuit is a third ratio, and a ratio between the width-to-length ratio of the channel of the thin-film field-effect transistor in the driving module of each of the at least one first-class pixel circuit and the width-to-length ratio of the channel of the thin-film field-effect transistor in the driving module of each of the at least one second-class pixel circuit is a fourth ratio; the third ratio is positively correlated with the fourth ratio, the third ratio is equal to the fourth ratio,
wherein each of the at least one first pixel circuit is a blue pixel circuit.