US 12,462,717 B2
Display apparatus and electronic device
Kazuaki Ohshima, Kanagawa (JP); Tatsunori Inoue, Kanagawa (JP); and Yusuke Koumura, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Appl. No. 18/684,958
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
PCT Filed Aug. 17, 2022, PCT No. PCT/IB2022/057686
§ 371(c)(1), (2) Date Feb. 20, 2024,
PCT Pub. No. WO2023/026137, PCT Pub. Date Mar. 2, 2023.
Claims priority of application No. 2021-138119 (JP), filed on Aug. 26, 2021.
Prior Publication US 2024/0371306 A1, Nov. 7, 2024
Int. Cl. G09G 3/00 (2006.01); G09G 3/32 (2016.01); G09G 3/3233 (2016.01)
CPC G09G 3/003 (2013.01) [G09G 3/32 (2013.01); G09G 3/3233 (2013.01); G09G 2300/026 (2013.01); G09G 2330/021 (2013.01); G09G 2340/0435 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a display portion including a first region and a second region;
a first driver circuit electrically connected to the first region;
a second driver circuit electrically connected to the second region;
a first circuit configured to generate a first image signal corresponding to a first image;
a second circuit configured to generate a second image signal corresponding to a second image;
a first signal generation circuit configured to generate a clock signal with a first frame frequency;
a second signal generation circuit configured to generate a clock signal with a second frame frequency; and
a voltage generation circuit configured to generate power supply voltages supplied to the first circuit, the second circuit, the first signal generation circuit, and the second signal generation circuit,
wherein the voltage generation circuit stops supply of voltage to the first circuit, the second circuit, the first signal generation circuit, and the second signal generation circuit in a period in which a still image is displayed on the display portion,
wherein, when an aspect ratio of an image displayed on the display portion is greater than an aspect ratio of the display apparatus, the image is displayed on the first region so as to be in contact with left and right edges of the display portion,
wherein black is displayed in the second region so as to be in contact with the left and right edges of the display portion,
wherein the first image is a moving image,
wherein the second image is a still image and contains a first character string,
wherein a frame frequency of the second region is higher than or equal to 1/60 Hz and lower than or equal to 10 Hz,
wherein the first frame frequency is higher than the second frame frequency,
wherein the display apparatus is configured to display the first image on the first region with the first frame frequency when the first image signal is transmitted to the first driver circuit, and
wherein the display apparatus is configured to display the second image on the second region with the second frame frequency when the second image signal is transmitted to the second driver circuit.