Circuit structure and display device for generating multiple identical voltages

Abstract

The invention discloses a circuit structure for generating multiple same voltages. The circuit structure comprises multiple same topological circuits capable of generating same voltages, each topological circuit comprises a voltage conversion module, a driving chip and a feedback module, the driving chip controls the voltage conversion module to convert an input voltage into an output voltage, and the feedback module generates a feedback voltage according to the output voltage and supplies the feedback voltage to the driving chip, so as to control increase or reduction of the output voltage; one of the multiple topological circuits is set as a master topological circuit, and the remaining topological circuits are set as slave topological circuits; a feedback voltage adjusting module is connected between the feedback module and the driving chip of each slave topological circuit, and the feedback voltage adjusting module solves the difference of the output voltages of the master topological circuit and the corresponding slave topological circuit to obtain a differential voltage, and adjusts the feedback voltage input to the corresponding slave topological circuit according to the differential voltage, so that the differential voltage tends to zero. The invention further discloses a display device comprising the circuit structure.

Description

technical field [0001] The present invention relates to the technical field of driving power supplies for display devices, in particular to a circuit structure for generating multiple identical voltages and a corresponding display device. Background technique [0002] At present, the display panel is getting bigger and bigger, and the resolution is getting higher and higher, so each voltage needs to provide a larger current driving capability. Existing large-size, high-resolution display panels require greater driving capabilities for each voltage, and it is very likely that one topology circuit cannot support it, and multiple topology circuits are required to provide the same voltage. However, due to the error between the driver ICs of each topological circuit and other errors, it is easy to cause a large error in the same voltage. The voltage within the error range is the lower limit value. At this time, the difference between the voltages generated by the two topological...

AI Technical Summary

Problems solved by technology

Existing large-size, high-resolution display panels require greater drive capability for each voltage. It is very likely that one topology circuit can no longer support it, and multiple topology circuits are needed to provide the same voltage.

However, due to the error between the driver ICs of each topological circuit and other errors, it is easy to cause a large error in the same voltage. The voltage is the lower limit within the error range. At this time, the voltage difference generated by the two topological circuits is relatively large, resulting in unstable driving of the display panel and affecting the display quality.

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