Device and method for setting backlight brightness of liquid crystal screen based on calibrated brightness value

A technology of backlight brightness and brightness value, which is applied to instruments, static indicators, etc., can solve the problems of LCD backlight brightness differences, large differences in display brightness values, eye fatigue, etc., to improve the visual experience and slow down the eyesight. The effect of fatigue

Pending Publication Date: 2022-01-14
中航华东光电有限公司
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Problems solved by technology

As a result, the luminance values ​​of LCD screens from different manufacturers vary greatly at the same luminance level in an area. Visually, the user experience is very poor, especially when used at night for

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  • Device and method for setting backlight brightness of liquid crystal screen based on calibrated brightness value

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[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be understood that the specific embodiments described herein are intended to illustrate and explain the invention and are not intended to limit the invention.

[0022] The present invention provides a device based on a calibrated luminance value to set backlight luminance, and the device includes a MCU processor within a host, a communication connector, and a host, and a host establishing a communication connection with the MCU processor, the MCU processor The PWM interface is connected to the backlight circuit in the liquid crystal display for setting backlight brightness.

[0023] In the present embodiment, the communication connector is RS232, RS422 or RS485. Communication form does not affect the function of this patent), the communication between the liquid crystal display and the host uses the main point of the point.

[0024] In the present embodiment, the apparatus further includes dimming buttons for later...

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Abstract

The invention discloses a device and a method for setting backlight brightness based on a calibrated brightness value in the field of liquid crystal screen backlight brightness adjustment. The device comprises a host, a communication connector and an mcu processor in a liquid crystal display screen, wherein the host establishes communication connection with the mcu processor through the communication connector; and a PWM interface of the mcu processor is connected with a backlight circuit in the liquid crystal display screen and is used for setting backlight brightness. The backlight brightness is set through the brightness value, and the k value and the b value of the display screen are determined by adopting a mode of calibrating each display screen, so that the backlight brightness of all liquid crystal display screens is the same when the brightness value is the same, the visual experience of a user is improved, and eye fatigue is relieved.

Description

technical field [0001] The invention relates to the field of adjusting the brightness of the backlight of a liquid crystal screen, in particular to a device and a method for setting the brightness of the backlight of a liquid crystal screen based on a calibrated brightness value. Background technique [0002] At present, there are many ways to adjust the brightness of the backlight of the LCD display, and there is no uniform standard for the brightness level and the actual brightness value. As a result, the luminance values ​​of LCD screens from different manufacturers vary greatly at the same luminance level in an area, and the visual experience, especially when used at night for a long time, is very poor for the user, and it is easy to cause eye fatigue. Moreover, due to differences in liquid crystal display screens and electronic components, the brightness of the backlight of the liquid crystal display screen will vary greatly under the same configuration parameters. [...

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Application Information

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IPC IPC(8): G09G3/34
CPCG09G3/3406G09G3/3413
Inventor 刘玉莉李培华季常刚鲁泽群周萌
Owner 中航华东光电有限公司
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