Gate turn-on voltage generating circuit, display panel driving device and display device
A voltage generation circuit and gate opening technology, applied in the direction of high-efficiency power electronic conversion, output power conversion devices, electrical components, etc., can solve the problems of insufficient intelligence, high display power consumption, inconvenient application, etc. consumption effect
Active Publication Date: 2021-06-18
CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST +1
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[0003] Existing displays use detection gate turn-on voltage V gh The actual voltage level, when the gate open voltage V gh When the voltage level is insufficient, the gate turn-on voltage V gh The input voltage of the generation circuit is switched to a high-level input voltage to ensure the gate turn-on voltage V gh The voltage level, but this switching method is not intelligent enough, and there is a problem that the power consumption of the display is too high after switching, and the application is inconvenient
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0034] In the present in...
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The invention discloses a gate turn-on voltage generation circuit, a display panel driving device and a display device. The gate turn-on voltage generation circuit comprises a turn-on / turn-off voltage output end; a power management integrated circuit and a voltage switching circuit; the detection end of the power management integrated circuit is connected with the opening / closing voltage output end, and the power management integrated circuit is used for detecting the voltage output by the opening / closing voltage output end and outputting a first switch control signal or a second switch control signal according to the detected voltage output by the opening / closing voltage output end; the voltage switching circuit comprises a first input end and a second input end, the first input end is connected with a first voltage value, and the second input end is connected with a second voltage value; the voltage switching circuit is used for outputting a first voltage value when receiving the first switch control signal; when a second switch control signal is received, a second voltage value is output; wherein the first voltage value is smaller than the second voltage value. The input voltage can be intelligently switched, so that the voltage level of the output voltage is ensured, and the power consumption is reduced.
Description
technical field [0001] The present invention relates to the technical field of display driving, in particular to a grid turn-on voltage generating circuit, a display panel driving device and a display device. Background technique [0002] With the development of display drive technology, large-screen displays have been widely used in large-size TVs, wide-screen computers and other household appliances. With the popularization of large-screen TVs, higher and higher gate turn-on voltage V gh To ensure the charging effect of the thin film transistor TFT (Thin Film Transistor). [0003] Existing displays use detection gate turn-on voltage V gh The actual voltage level, when the gate open voltage V gh When the voltage level is insufficient, the gate turn-on voltage V gh The input voltage of the generation circuit is switched to a high-level input voltage to ensure the gate turn-on voltage V gh The voltage level, but this switching method is not intelligent enough, and there i...
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IPC IPC(8): H02M1/36H02M1/088H02M3/156H02M1/32
CPCH02M1/36H02M1/088H02M3/156H02M1/32Y02B70/10G09G2330/026G09G3/2096G09G2330/021G09G2330/028H02M1/08H03K17/56
Inventor 王明良
Owner CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST