A gate turn-on voltage generating circuit, a display panel driving device, and a display device
A technology of voltage generation circuit and gate opening, which is applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., can solve the problems of insufficient intelligence, high power consumption of the display, inconvenient application, etc., and reduce power consumption. consumption effect
Active Publication Date: 2022-06-03
CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST +1
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Problems solved by technology
[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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[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiment of the present invention are only used for
[0034] In the present invention, unless otherwise expressly specified and limited, the terms "connected", "fixed" and the like should be understood in a broad sense,
[0035] In addition, in the present invention, such as the description related to "first", "second", etc. are only for the purpose of description, and should not be construed as
[0036] The present invention provides a gate turn-on voltage generating circuit.
[0039] The power management integrated circuit 20, the detection terminal of the power management integrated circuit 20 and the on / off voltage
[0040] The voltage switching circuit 30, the voltage switching circuit 30 includes a controlled terminal, a first input terminal and a second input terminal, so
[0042] The voltage generating circuit 40, the input end of the voltage generating circuit...
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The invention discloses a gate turn-on voltage generating circuit, a display panel drive device and a display device. The gate turn-on voltage generating circuit includes: turn on / off voltage output terminals; terminal connection, the power management integrated circuit is used to detect the voltage output by the on / off voltage output terminal, and output the first switch control signal or the second switch control signal according to the detection of the voltage output by the on / off voltage output terminal; the voltage switching circuit, The voltage switching circuit includes a first input terminal and a second input terminal, the first input terminal is connected to the first voltage value, and the second input terminal is connected to the second voltage value; the voltage switching circuit is used for receiving the first switch control signal , output the first voltage value; when receiving the second switch control signal, output the second voltage value; wherein, the first voltage value is smaller than the second voltage value. The invention can intelligently switch the input voltage to ensure the voltage level of the output voltage and reduce power consumption.
Description
A gate turn-on voltage generating circuit, a display panel driving device and a display device technical field The present invention relates to the technical field of display drive, particularly a kind of gate turn-on voltage generating circuit, display surface Board drive device and display device. Background technique [0002] With the development of display drive technology, large-screen displays are used in household appliances such as large-size TVs and wide-screen computers. With the popularization of large-screen TVs, higher and higher gate turn-on voltages V gh to guarantee The charging effect of thin film transistor TFT (Thin Film Transistor). Existing display adopts detection gate turn-on voltage V gh the actual voltage level when the gate turns on the voltage V gh Voltage When the 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 that the gate...
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IPC IPC(8): G09G3/36
CPCH02M1/36H02M1/088H02M3/156H02M1/32Y02B70/10G09G2330/026G09G3/2096G09G2330/021G09G2330/028H02M1/08H03K17/56
Inventor 王明良
Owner CHONGQING XIANJIN PHOTOELECTRIC DISPLAY TECH RES INST