Display panel
AssigneeGuangzhou China Star Optoelectronics Semiconductor Display Technology Co., LTd.
InventorMaoxia Zhu
Life of this patent
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Abstract
The application provides a display panel including a data signal modulation module, a light-emitting device, and a pixel driving circuit. The light-emitting device is electrically connected in a loop formed by a first power supply terminal and a second power supply terminal of the pixel driving circuit. The data signal modulation module is electrically connected to the first data signal terminal of the pixel driving circuit. The data signal modulation module is configured to obtain a pending grayscale value for the light-emitting device to display, and to adjust a duty cycle and a voltage value of the data signal that makes the light-emitting device to emit light according to the pending grayscale value, ensuring that the light-emitting device can stably display multiple grayscale values.
Claims9
A display panel, comprising a data signal modulation module, a light-emitting device, and a pixel driving circuit, wherein the light-emitting device is electrically connected in a loop formed by a first power supply terminal and a second power supply terminal of the pixel driving circuit, and the pixel driving circuit comprises:
- a driving transistor, a source of the driving transistor being electrically connected to the first power supply terminal, and a drain of the driving transistor being electrically connected to one terminal of the light-emitting device;
- a first transistor, a gate of the first transistor being electrically connected to a first scanning signal terminal of the pixel driving circuit, a source of the first transistor being electrically connected to a first data signal terminal of the pixel driving circuit, and a drain of the first transistor being electrically connected to a gate of the driving transistor;
- a storage capacitor, a first electrode plate of the storage capacitor being electrically connected to the gate of the driving transistor, and a second electrode plate of the storage capacitor being electrically connected to the drain of the driving transistor;
- wherein, a display period of one frame displayed by the light-emitting device comprises consecutive sub-display periods comprising at least a first sub-display period and a second sub-display period, the first scanning signal terminal is configured to receive, in any of the first and second sub-display periods, a first scanning signal turning on the first transistor;
- and the first data signal terminal is configured to receive, in at least the first sub-display period, a data signal controlling the driving transistor to turn on;
- and
- the data signal modulation module is electrically connected to the first data signal terminal and is configured to obtain a pending grayscale value for the light-emitting device to display, and to provide the data signal to the first data signal terminal based on the pending grayscale value;
- wherein the data signal modulation module is configured to obtain the pending grayscale value, and to determine whether the pending grayscale value is a first grayscale value, and configured to provide the data signal to the first data signal terminal in the first sub-display period when the pending grayscale value is the first grayscale value;
- or
- the data signal modulation module is configured to obtain the pending grayscale value, and to determine whether the pending grayscale value is a second grayscale value, and configured to provide the data signal to the first data signal terminal in both the first and the second sub-display periods when the pending grayscale value is the second grayscale value;
- and
- wherein, the second grayscale value is greater than a first grayscale threshold value, and the first grayscale value is less than or equal to the first grayscale threshold value.
Dependencies are inferred from the claim text.