Unlock instant, AI-driven research and patent intelligence for your innovation.

Display apparatus using power supply circuit

A technology for power supply circuits and display equipment, applied to conversion equipment without intermediate conversion to AC, static indicators, cathode ray tube indicators, etc., can solve problems such as damage and achieve the effect of preventing deterioration

Inactive Publication Date: 2010-10-27
RENESAS ELECTRONICS CORP
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a case, the regulator 203 using the output voltage VOUT as the supply voltage may be damaged

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Display apparatus using power supply circuit
  • Display apparatus using power supply circuit
  • Display apparatus using power supply circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Hereinafter, a power supply circuit for a display device according to the present invention will be described in detail with reference to the accompanying drawings. Figure 4 is a block diagram showing the configuration of the display device 200 according to the embodiment of the present invention. A display device 200 according to the present invention is provided with a power supply circuit 101 for a display device that changes a boost factor according to a power supply voltage in order to minimize consumption current. In this embodiment, a display device 200 including a power supply circuit 101 that doubles a power supply voltage directly supplied from a battery by a boost factor of 2 or 3 will be described as an example.

[0040] (structure)

[0041] The display device 200 according to the present invention includes a power supply circuit 101 , a driver 110 , a display panel 120 and a timing controller (TCON) 130 . The power supply circuit 101 outputs an output vo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A power supply circuit for a display apparatus, includes: a voltage boosting circuit configured to boost up an input voltage based on a voltage boosting factor to output a boosted output voltage; a voltage detecting circuit configured to compare a voltage level of a power supply voltage to which the input voltage is related and a predetermined voltage level; and a control circuit configured to output one of a first voltage boosting factor and a second voltage boosting factor as the voltage boosting factor to the voltage boosting circuit based on the comparison result. The control circuit changes the voltage boosting factor during a blanking period in a display panel.

Description

technical field [0001] The present invention generally relates to a display device, a power supply circuit for a display device, and a method for changing a boost factor of a power supply voltage for a display device. Background technique [0002] In recent years, batteries are generally used as power sources in mobile terminals such as cellular phones and mobile computers. Therefore, there is a need to achieve power saving for mobile terminals. In particular, since power consumption of a display device mounted on a mobile terminal occupies a major portion of power consumption of the entire terminal, it is effective to save power of the mobile terminal to reduce power consumption of the display device. In order to reduce the power consumption of the display device, it is necessary to change (or select) the power supply voltage to be supplied to the display device according to the battery voltage so that the consumption current in the power supply circuit is minimized. For ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07G09G5/00
CPCG09G2320/0247H02M3/07G09G2310/061G09G3/20G09G2330/02
Inventor 田畑贵史
Owner RENESAS ELECTRONICS CORP