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Display adjusting brightness according to display distance

A technology for adjusting brightness and display distance, applied to static indicators, instruments, etc., can solve the problems of increased error in sensing effect, high cost, unsuitable for large-size liquid crystal modules, etc., and achieves improvement and protection of image retention The effect of the LCD module

Inactive Publication Date: 2010-05-19
AU OPTRONICS CORP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, for a display that uses light-sensing elements as sensors, once the distance between the user and the display screen is longer, the error of the sensing effect will also increase.
Relative distance sensing is complex and expensive for displays using digital camera modules as sensors
Therefore, neither is suitable for solving the related problems encountered in large-size LCD modules

Method used

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  • Display adjusting brightness according to display distance
  • Display adjusting brightness according to display distance

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Embodiment Construction

[0023] see figure 1 , figure 1 It is a functional block diagram of the display 10 of the present invention. The display 10 includes a liquid crystal module 12 , a sensor 14 , a switching gain circuit 16 , a level shifting circuit 22 , a microcontroller 18 and a brightness controller 20 . The liquid crystal module 12 includes a liquid crystal display panel 122 and a backlight module 124 , and the liquid crystal display panel 122 is used to display images according to light emitted by the backlight module 124 . The sensor 14 is installed on one side of the liquid crystal module 12, and it can be a microwave sensor, an infrared sensor or an ultrasonic sensor. The transmitting end of the sensor 14 can emit microwaves, infrared rays or Boeing waves toward the direction that the liquid crystal module 12 faces the user. Receiver receives. The receiving end of the sensor 14 generates a sensing signal according to the reflected microwave, infrared or Boeing wave. The level shiftin...

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Abstract

The invention discloses a display adjusting the brightness according to a display distance, which comprises a liquid crystal module, a sensor, a switch gain circuitry, a microcontroller and a brightness controller, wherein the liquid crystal module comprises a display panel and a backlight module and the display panel is used for displaying images according to the light of the backlight module; the sensor is arranged on one side of the liquid crystal module and is used for generating a sense signal according to the distance between the backlight module and a user; the switch gain circuitry is coupled with the sensor and is used for comparing the sense signal with a plurality of gain values so as to output a measuring voltage; the microcontroller is coupled with the switch gain circuitry and is used for determining the distance between the liquid crystal module and the user according to the measuring voltage; and the brightness controller is coupled with the microcontroller and the liquid crystal module and is used for adjusting the brightness of the display panel according to the distance, which is determined by the microcontroller, between the liquid crystal module and the user,. Because the display of the invention can automatically detect the relative distance between a relatively distant moving object and the liquid crystal module, the display has the characteristic which is not possessed by the traditional liquid crystal module using a sensing element.

Description

technical field [0001] The invention relates to a flat display with adjustable brightness, in particular to a flat display with adjustable brightness according to the display distance. Background technique [0002] Displays with advanced functions have gradually become an important feature of today's consumer electronics products, among which liquid crystal displays have gradually been widely used in various electronic devices such as TVs, mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens . [0003] However, the power consumption of large-size LCD modules used in LCD TVs, computer screens, or notebook computer screens will increase significantly with the increase in the size or brightness of the LCD module, and the increase in power consumption will generate more power consumption. thermal energy. In addition, when the liquid crystal module is displayed on the same screen for a long time, there will be a problem of image...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20
Inventor 洪明吉廖致霖施鸿民
Owner AU OPTRONICS CORP
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