US 12,292,630 B2
Display panel with switchable wide and narrow viewing angles, driving method and display device
Te-Chen Chung, Suzhou (CN); Jiajun Shen, Suzhou (CN); Limei Jiang, Suzhou (CN); and Jun Jiang, Suzhou (CN)
Assigned to INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD., Suzhou (CN)
Appl. No. 18/575,843
Filed by Infovision Optoelectronics (Kunshan) Co., LTD., Suzhou (CN)
PCT Filed Apr. 6, 2022, PCT No. PCT/CN2022/085258
§ 371(c)(1), (2) Date Dec. 30, 2023,
PCT Pub. No. WO2023/193132, PCT Pub. Date Oct. 12, 2023.
Prior Publication US 2024/0369868 A1, Nov. 7, 2024
Int. Cl. G02F 1/13 (2006.01); G02F 1/133 (2006.01); G02F 1/1335 (2006.01); G02F 1/1343 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/13306 (2013.01); G02F 1/133514 (2013.01); G02F 1/133531 (2021.01); G02F 1/134309 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display panel with switchable wide and narrow viewing angles, wherein the display panel is provided with a patterned identification area and a non-identification area, and the display panel comprises a light adjusting box and a display box which are stacked with one on another;
the light adjusting box comprises a first substrate, a second substrate arranged opposite to the first substrate and a first liquid crystal layer arranged between the first substrate and the second substrate, the side of the first substrate facing the first liquid crystal layer is provided with a common viewing angle electrode, the side of the second substrate facing the first liquid crystal layer is provided with a first viewing angle electrode and a second viewing angle electrode which are matched with the common viewing angle electrode, the first viewing angle electrode and the second viewing angle electrode are insulated and separated from each other, the first viewing angle electrode is located correspondingly in the identification area, and the second viewing angle electrode is located correspondingly in the non-identification area;
wherein the second viewing angle electrode is provided with an opening corresponding to the first viewing angle electrode, and the pattern of the opening is the same as that of the first viewing angle electrode;
in the wide viewing angle mode, the first viewing angle electrode and the second viewing angle electrode are applied with electric signals with the same amplitude, and the light transmittance of the identification area and the non-identification area from the same side viewing angle is the same;
in the narrow viewing angle mode, the first viewing angle electrode and the second viewing angle electrode are applied with electric signals with different amplitudes, and the light transmittance of the identification area and the non-identification area from the same side viewing angle is different.