US 12,437,702 B2
Display apparatus having lock function and display driving circuit thereof
Sung Wan Jung, Daejeon (KR); Seong Bok Cha, Daejeon (KR); Soo Woo Kim, Daejeon (KR); and Yong Ik Jung, Daejeon (KR)
Assigned to LX SEMICON CO., LTD., Daejeon (KR)
Filed by LX SEMICON CO., LTD., Daejeon (KR)
Filed on Jul. 10, 2024, as Appl. No. 18/768,808.
Application 18/768,808 is a continuation of application No. 18/210,101, filed on Jun. 15, 2023, granted, now 12,062,319.
Application 18/210,101 is a continuation of application No. 17/820,862, filed on Aug. 18, 2022, granted, now 11,783,754, issued on Oct. 10, 2023.
Claims priority of application No. 10-2021-0134886 (KR), filed on Oct. 12, 2021.
Prior Publication US 2024/0363053 A1, Oct. 31, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/2096 (2013.01) [G09G 2310/08 (2013.01); G09G 2330/021 (2013.01); G09G 2330/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display driving circuit having a lock function, comprising:
a comparison unit configured to receive a transfer lock signal and output a comparison signal obtained by comparing the transfer lock signal and an internal lock signal obtained by determining a state of an internal recovery clock; and
an output circuit configured to generate a feedback lock signal having a level corresponding to a level of the comparison signal to output the feedback lock signal to a lock signal transmission line to which a first power source is applied.