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An embedded light-sensing drive system and its drive method

A driving system and driving method technology, applied in static indicators, instruments, etc., can solve the problems that the screen brightness is not suitable for users to view the screen comfortably, the adjustment gear is limited, etc., to achieve the effect of viewing the screen comfortably for the human eye

Active Publication Date: 2020-06-05
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of display device needs to use an external light sensing device for ambient light sensing, and the adjustment gear is limited, and the obtained screen brightness is not suitable for all users to comfortably watch the screen.

Method used

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  • An embedded light-sensing drive system and its drive method
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  • An embedded light-sensing drive system and its drive method

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Experimental program
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Embodiment Construction

[0020] The present invention will be described in further detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0021] figure 1 It is a system structure diagram of the embodiment of the present invention. An embedded light-sensing driving system includes a brightness adjustment module 1 , a driving module 2 and a display module 3 .

[0022] Wherein, the display module 3 includes a backlight source 4 and a display panel 5 , and the display panel 5 includes a TFT element 6 . The brightness adjustment module 1 is connected to the drain d and the source s of the TFT element 6, and is used to sample the drain current of the TFT element 6 and the voltage between the source s and the drain d, and obtain the corresponding current threshold according to the voltage , to output the PWM signal corresponding to the gear to the drive module 2 according to the difference between the drain current and the current threshold. The driving mo...

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Abstract

The invention provides an embedded light-induced drive system and a drive method thereof. The system includes a brightness adjustment module, a drive module, and a display module. The display module includes a backlight source and a display panel. The display panel includes a TFT element. The brightness adjusting module is connected with the drain of the TFT element, and is used for sampling the drain current of the TFT element and the voltage between the source and the drain, getting a corresponding current threshold according to the voltage, and outputting a PWM signal of a corresponding gear to the drive module according to the difference between the drain current and the current threshold. The drive module drives the backlight source of the display module to emit light according to the PWM signal received. The TFT element on the display panel is used as a light sensor, and there is no need for an external light sensor and related devices. The brightness of the gears is automatically adjusted according to the ambient light illumination. People can feel more comfortable watching the screen under different ambient light illumination.

Description

technical field [0001] The invention relates to the field of liquid crystal light-sensing control, in particular to an embedded light-sensing driving system and a driving method thereof. Background technique [0002] The existing vehicle-mounted display device usually uses an external light sensing device to sense ambient light, and then changes the brightness of two gears. However, such a display device needs to use an external light sensing device for ambient light sensing, and the adjustment range is limited, and the obtained screen brightness is not suitable for all users to comfortably watch the screen. Contents of the invention [0003] In order to solve the above problems, the present invention provides an embedded optical induction drive system and a drive method thereof. [0004] An embedded light-sensing driving system includes a brightness adjustment module, a driving module and a display module. The display module includes a backlight source and a display pan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/34
CPCG09G3/3406G09G3/36G09G2320/0626
Inventor 樊伟锋张大雷田坤卢佳惠姜飞
Owner KUSN INFOVISION OPTOELECTRONICS