Energy saving functional image display system

Abstract

The system includes a display faceplate, a power supply device, a control circuit and a detecting device. When a object being detected in front of the display faceplate within a preselected distance, the detecting device generates a relevant first detecting signal output to the control circuit inorder to reduce power source supply from the power supply device to the display faceplate.

Description

technical field [0001] The invention relates to an image display system, in particular to an image display system with power saving function. Background technique [0002] In this modern society where information changes and everything is efficient, various portable information products, such as mobile phones (cell phones), personal digital assistants (personal digital assistant, PDA) or other portable electronic devices, have become It has become an essential product for many business people or high-tech people. For portable electronic devices, in addition to various operational functional requirements, the most common people pay attention to is its continuous use time. Therefore, portable electronic devices are usually equipped with some power saving mechanisms to reduce some internal circuit components in a timely manner. The operating frequency is even turned off, thereby prolonging its continuous use time. [0003] Generally speaking, most portable electronic devices ...

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Problems solved by technology

[0006] Since it is known that the power saving mode mostly judges whether the image display system is used by the operation of the input device, there are still many deviations between this judgment method and the real usage situation, for example, when the user puts the mobile phone in the When there is a phone call in the bag or the user puts the mobile phone near the ear for operation, it will easily happen that the control circuit 26 determines that the mobile phone is in an operating state and strengthens the brightness output of the display panel 22, but in fact the user does not. There is no need to use the display panel 22, which will cause unnecessary power consumption and shorten the use time of the mobile phone

[0007] In addition, since it is known that the display panel 22 mostly adopts a liquid crystal display panel that does not actively emit light, the effect of partially shutting down and reducing power consumption can be achieved by controlling the light source part of the backlight module below the liquid crystal display panel. However, with the organic light emitting diode ( OLED) or other electroluminescent (EL) elements are gradually developed and widely used in the display panels of these portable electronic devices. These self-luminous display panels will not be able to use the above method to partially shut down, but will cause continuous power consumption The phenomenon

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