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Power source chip, invocation method of PWM (pulse width modulation) and PFM (pulse frequency modulation) of power source chip and display screen

A technology of power chips and inductors, applied in static indicators, instruments, etc., can solve laborious and laborious problems

Inactive Publication Date: 2018-06-05
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a power supply chip, which is used to solve the time-consuming and laborious problem of selecting PWM and PFM by monitoring the output data of the drive chip in the prior art
[0006] The embodiment of the present application also provides a method for invoking PWM and PFM of a power supply chip and a display screen, which are used to solve the problem in the prior art when selecting PWM and PFM by monitoring the size of the output data of the driving chip.

Method used

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  • Power source chip, invocation method of PWM (pulse width modulation) and PFM (pulse frequency modulation) of power source chip and display screen
  • Power source chip, invocation method of PWM (pulse width modulation) and PFM (pulse frequency modulation) of power source chip and display screen
  • Power source chip, invocation method of PWM (pulse width modulation) and PFM (pulse frequency modulation) of power source chip and display screen

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Embodiment Construction

[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0034] The power chip can be used for display screens, and can also be applied to other devices. Taking the power chip applied to the display screen as an example, the power chip of the present application will be introduced in detail below.

[0035] Usually, such as figure 1 As shown, the load 1 (organic light-emitting diode (OLED) of the display s...

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Abstract

The present invention discloses a power source chip. The power source chip comprises a substrate, a modulation controller disposed on the substrate, and a sensing module disposed on the substrate, wherein the modulation controller has a pulse width modulation mode and a pulse frequency modulation mode, and the sensing module is used for monitoring the output power of the power source chip; when the output power is greater than a power threshold value, the pulse width modulation mode is invoked, otherwise, the pulse frequency modulation mode is invoked; the magnitude of the output power is generally in linear correlation with the power of a load; and therefore, complicated calculation is not needed, and when the pulse width modulation mode and the pulse frequency modulation mode are selected, labor-saving and labor-saving performance can be realized. The invention also discloses an invocation method of the PWM (pulse width modulation) and PFM (pulse frequency modulation) of a power source chip and a display screen.

Description

technical field [0001] The present application relates to the field of chip technology, in particular to a power chip, and also to a method for invoking PWM and PFM of the power chip and a display screen. Background technique [0002] With the continuous development of technology, there are more and more types of display screens, such as liquid crystal display screens, OLED (Organic Light Emitting Diode) display screens, and the like. The light-emitting principles of different display screens may be different. Taking OLED as an example, a power chip (Power IC) provides power to the OLED to make the OLED emit light, thereby making the display screen emit light. [0003] There are two ways for the power chip to output power, namely pulse width modulation (Pulse Width Modulation, hereinafter referred to as PWM) and pulse frequency modulation (Pulse Frequency Modulation, hereinafter referred to as PFM). Generally, PWM controls the output by adjusting the pulse width, its quiesc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 王向前葛明伟王峥李文兴
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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