Samsung Electronics Co., Ltd.

Joongmin Ra

Sunyoung Kim

Young Jun Park

Young Bae Park

The present disclosure provides apparatuses including display driver circuits and operating methods thereof. In some embodiments, an electronic device includes a display panel, a nonvolatile memory, and a display driver circuit configured to receive frame data through a video interface channel, generate compensated frame data by compensating for the frame data by using compensation data, and send the compensated frame data to the display panel. The display driver circuit includes a display memory configured to store the compensation data, a compensation circuit configured to generate the compensated frame data from the frame data, a buffer memory, and a backup controller configured to monitor a status of the compensation circuit, and, when the compensation circuit is in an idle state, read partial data among the compensation data from the display memory, and write data present in the buffer memory in the nonvolatile memory.

Display driver circuit, electronic device including display driver circuit, and operating method of display driver circuit

An electronic device includes a display panel, a nonvolatile memory, and a display driver circuit that includes a frame buffer and a display memory. The electronic device is connected with an external device through a video interface channel, and is connected with the display panel and the nonvolatile memory. In a first mode, the display driver circuit distributes and store data received through the video interface channel in the frame buffer and the display memory, and programs the data distributed and stored in the frame buffer and the display memory in the nonvolatile memory. In a second mode, the display driver circuit loads the data stored in the nonvolatile memory to the display memory, stores frame data received through the video interface channel in the frame buffer, generates compensated frame data by compensating for the frame data by using the data, and sends the compensated frame data to the display panel.

Electronic device including nonvolatile memory, display panel and display driver circuit, and operating method of electronic device

A display driver circuit may include a revision controller for controlling a nonvolatile memory having instructions by which control data for controlling devices controlled by the display driver circuit are changed, and a drive controller for controlling the devices based on the instructions. The revision controller determines whether to perform a read operation to the instructions based on electrical power being applied to the display driver circuit, and transfers instruction signals, which are generated based on the determination to perform the read operation, to the driving controller.

Growing community of inventors

Suwon-si, South Korea

Joongmin Ra