Anti-peeping circuit, driving method thereof, and display device
AssigneesBeijing Boe Display Technology Co., Ltd., Boe Technology Group Co., Ltd.
InventorsXinle Wang, Wei Sun, Wenchao Han, Zhaohui Meng, Lianghao Zhang, Yilin Feng, Xiaoyang Shen
Life of this patent
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Abstract
An anti-peeping circuit for a display panel, a driving method thereof, and a display device. The anti-peeping circuit includes a waveform generator. The waveform generator is connected to an anti-peeping electrode of the display panel, and the waveform generator is configured to generate an anti-peeping signal and output the anti-peeping signal to the anti-peeping electrode of the display panel.
Claims15
An anti-peeping circuit for a display panel, the anti-peeping circuit comprising a waveform generator,
- wherein the waveform generator is connected to an anti-peeping electrode of the display panel, and the waveform generator is configured to generate an anti-peeping signal and output the anti-peeping signal to the anti-peeping electrode of the display panel;
- and
- a calculating circuit, wherein the calculating circuit is connected to the waveform generator and the anti-peeping electrode, respectively, and the calculating circuit is configured to amplify the anti-peeping signal and output the amplified anti-peeping signal to the anti-peeping electrode,
- wherein the calculating circuit comprises a first calculating sub-circuit and a second calculating sub-circuit;
- the first calculating sub-circuit comprises a first input terminal, a second input terminal and a first output terminal,
- the second calculating sub-circuit comprises a third input terminal, a fourth input terminal and a second output terminal,
- the first input terminal of the first calculating sub-circuit is connected to an output terminal of the waveform generator to receive the anti-peeping signal, the second input terminal of the first calculating sub-circuit is connected to a reference voltage terminal to receive a reference voltage, and the first output terminal of the first calculating sub-circuit is connected to the third input terminal of the second calculating sub-circuit;
- and
- the fourth input terminal of the second calculating sub-circuit is connected to a bias voltage terminal to receive a bias voltage, and the second output terminal of the second calculating sub-circuit is connected to the anti-peeping electrode to output the amplified anti-peeping signal.
A driving method of an anti-peeping circuit for a display panel, the anti-peeping circuit comprising a waveform generator, wherein the waveform generator is connected to an anti-peeping electrode of the display panel, and the waveform generator is configured to generate an anti-peeping signal and output the anti-peeping signal to the anti-peeping electrode of the display panel, and
- the driving method comprises:
- generating the anti-peeping signal by the waveform generator, and inputting the anti-peeping signal to the anti-peeping electrode of the display panel, and
- the anti-peeping circuit further comprises a calculating circuit, and the driving method further comprises:
- amplifying, by the calculating circuit, the anti-peeping signal generated by the waveform generator;
- and sending the amplified anti-peeping signal to the anti-peeping electrode of the display panel,
- wherein the calculating circuit comprises a first calculating sub-circuit and a second calculating sub-circuit,
- the first calculating sub-circuit comprises a first input terminal, a second input terminal and a first output terminal,
- the second calculating sub-circuit comprises a third input terminal, a fourth input terminal and a second output terminal,
- the first input terminal of the first calculating sub-circuit is connected to an output terminal of the waveform generator to receive the anti-peeping signal, the second input terminal of the first calculating sub-circuit is connected to a reference voltage terminal to receive a reference voltage, and the first output terminal of the first calculating sub-circuit is connected to the third input terminal of the second calculating sub-circuit;
- and
- the fourth input terminal of the second calculating sub-circuit is connected to a bias voltage terminal to receive a bias voltage, and the second output terminal of the second calculating sub-circuit is connected to the anti-peeping electrode to output the amplified anti-peeping signal.
Dependencies are inferred from the claim text.