Circuit for eliminating flashing white at shutdown, its driving method, display panel, and display device
A circuit and drive module technology, applied in the direction of static indicators, instruments, etc., can solve the problems of long duration, large pressure difference at both ends of liquid crystal molecules, and flashing white when shutting down.
Active Publication Date: 2020-11-13
BOE TECH GRP CO LTD +1
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Problems solved by technology
However, the current ADS liquid crystal display panel has the phenomenon of flashing white when it is turned off
The specific reason is: during the shutdown process, the power-down trend of the half-value analog voltage signal and the common voltage signal is close, but the power-down speed of the data signal is obviously faster than that of the half-value analog voltage signal and the common voltage signal, resulting in the existence of The large voltage difference caused by the data signal and the public voltage signal lasts for a long time, and the human eye will observe that the display panel flashes a white screen
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[0037] The specific implementations of the circuit for eliminating power-off flickering provided by the embodiments of the present invention, its driving method, a display panel, and a display device will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are only some of the embodiments of the present invention, not all of them; and in the case of no conflict, the embodiments in this application and the features in the embodiments can be combined with each other; In addition, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0038] The embodiment of the present invention provides a circuit for eliminating the flashing at shutdown, such as figure 1 As shown, it includes: a detection module 101, a comparison module 102 and a...
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The invention discloses a circuit for eliminating shutdown white flush, a driving method thereof, a display panel and a display device. The circuit comprises a detecting module, a comparing module anda driving module. Because a semi-value simulating voltage signal line is connected with a data signal line in a shutdown process of the circuit, the power-off trend of a semi-value simulating voltagesignal on the semi-value simulating voltage signal line is same with the power-off trend of a data signal on the data signal line. Furthermore in the prior art, the power-off trend of the semi-valuesimulating voltage signal is similar with the power-off trend of a common voltage signal. Therefore the circuit according to the invention can realize basically same power-off trend of the semi-valuesimulating voltage signal, the data signal and the common voltage signal, and furthermore a voltage difference caused by the data signal and the common voltage signal over two ends of a liquid crystalmodule is prevented, thereby effectively eliminating a white flash phenomenon in shutdown.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a circuit for eliminating white flashing when shutdown, a driving method thereof, a display panel, and a display device. Background technique [0002] Liquid Crystal Display (LCD) has the advantages of light weight, thin thickness, low power consumption, easy to drive, and no harmful rays. It has been widely used in modern information equipment such as TVs, notebook computers, mobile phones, and personal digital assistants. , has broad development prospects. Moreover, the large-size and ultra-high-definition LCD panels are an important development direction of display technology. [0003] The Advanced Super Dimension Switch (ADS) liquid crystal display panel is a large-sized and high-definition liquid crystal display panel. However, the current ADS liquid crystal display panel has a phenomenon of flashing white when it is turned off. The specific reason is: during the shutdow...
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IPC IPC(8): G09G3/36
CPCG09G3/3688
Inventor 董兴李川熊丽军张智唐秀珠唐滔良胡双田振国梁雪波
Owner BOE TECH GRP CO LTD