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A display module driving circuit and electronic equipment

A display module and drive circuit technology, applied in the electronic field, can solve problems such as low conversion efficiency of the drive circuit, and achieve the effects of improving conversion efficiency, reducing loss, and improving output efficiency

Active Publication Date: 2021-10-29
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a display module drive circuit and electronic equipment to solve the problem of low conversion efficiency of the drive circuit in the prior art under low load conditions

Method used

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  • A display module driving circuit and electronic equipment
  • A display module driving circuit and electronic equipment
  • A display module driving circuit and electronic equipment

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Embodiment Construction

[0019] In order to make the technical problems, technical solutions, and advantages to the present invention, the technical solutions and advantages will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] figure 1 A circuit principle diagram of the display module driving circuit provided by the embodiment of the present invention is shown. See figure 1 The embodiment of the present invention provides a display module driving circuit, which may include a first crystal oscillator 210, a second crystal oscillator 220, and a selection module 300.

[0021] The selection module 300 is electrically connected to the first crystal oscillator 210 and the second crystal oscillator 220; when the selection module 300 receives the first load input signal, selecting module 300 outputs a crystal control signal, driving the first crystal oscillator 210 and the second crystal oscillator 220. One of the people vibrates; wherein the vibration ...

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Abstract

The present invention provides a display module drive circuit and electronic equipment. The display module drive circuit includes a first crystal oscillator, a second crystal oscillator and a selection module; the selection module is electrically connected to the first crystal oscillator and the second crystal oscillator; In the case of the first load input signal, the selection module outputs a crystal oscillator control signal to drive one of the first crystal oscillator and the second crystal oscillator to vibrate; wherein the vibration frequency of the first crystal oscillator is different from that of the second crystal oscillator. The invention can adapt the crystal oscillator to the load condition, thereby reducing the switching frequency of the MOSFET in the driving circuit, reducing its loss, improving the DC-DC conversion efficiency in the driving circuit, thereby improving the output efficiency of the driving circuit.

Description

Technical field [0001] The present invention relates to the field of electronic technology, and more particularly to a display module drive circuit and an electronic device. Background technique [0002] The function of the drive circuit of AMOLED (Active-Matrix Organic Light Emitting Diode) screen is powered by the internal DC-DC (DC-DC chopper) to power the AMOLED screen, via MOSFET (Metal -Oxide-Semiconductor Field-Effect Transistor, Metal-Oxide Semiconductor Field Effect Transistor, Absorbent Control DC-DC Realization DC-DC. PWM (PulseDwidth Modulation) mode is one of the main modes of current display module, especially the drive circuit of the AMOLED display module to the output voltage. The PWM mode features the modulation signal frequency, and the pulse width changes, the proportion of the high level determines its output capability, so the pulse width of the high load is large, the pulse width when the low load is low. [0003] It is well known that every opening / closur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225
Inventor 梁长国
Owner VIVO MOBILE COMM CO LTD