LED backlight source and brightness and brightness uniformity automatic adjusting method thereof

A technology of LED backlight and brightness uniformity, applied in optics, nonlinear optics, instruments, etc., can solve problems such as uneven brightness of backlight

Pending Publication Date: 2018-01-30
SUZHOU HUAXING YUANCHUANG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet these needs, it is urgent to solve the technical problem of uneven brightness of the backlight

Method used

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  • LED backlight source and brightness and brightness uniformity automatic adjusting method thereof
  • LED backlight source and brightness and brightness uniformity automatic adjusting method thereof
  • LED backlight source and brightness and brightness uniformity automatic adjusting method thereof

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Embodiment Construction

[0032] The present invention is described in detail by the following examples. It is necessary to point out that this example is only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention. Those skilled in the art can according to the above invention Some non-essential improvements and adjustments have been made to the content. In the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.

[0033] Such as Figure 1-3 As shown, the present invention provides an LED backlight S11, including:

[0034] LED light board S1;

[0035] The LED light string S4 arranged in an array on the light-emitting surface of the LED light board S1; the LED light string S4 includes a constant current light string S6 and a variable current light string S7;

[0036] The row dividing line S2 and the column dividing line S3 evenly divide the LED ...

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PUM

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Abstract

The invention discloses an LED backlight source and a brightness and brightness uniformity automatic adjusting method thereof. The LED backlight source comprises an LED light board, an LED light string which is arranged in an array on the light emitting surface of the LED light board and comprises a constant current light string and a variable current light string, a row division line, a column division line, and a multi-channel LED constant current control substrate. The LED light string is uniformly divided into a number of partially adjustable units. The variable current light string is arranged around the center of the partially adjustable units. The multi-channel LED constant current control substrate is used for controlling current flowing through the constant current light string and the variable current light string, is provided with an RS232 communication interface, and has a data storage function. According to the invention, automatic adjustment of the brightness and brightness uniformity of the LED backlight source is realized; the requirements of high brightness and high uniformity are met; and the LED backlight source is free of manual adjustment, is suitable for automated production, and is suitable for a variety of high, medium and low grade design applications.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an LED backlight source and a method for automatically adjusting brightness and brightness uniformity thereof. Background technique [0002] From the structural point of view, the TFT LCD panel mainly consists of two parts: LCD screen and backlight. The LCD screen itself does not emit light, and the white light emitted by the backlight is selectively passed by the LCD screen to form the picture to be displayed on the surface of the LCD screen. Therefore, the brightness value and uniformity displayed by the TFT liquid crystal panel are mainly determined by the characteristics of the backlight source. [0003] At present, the brightness value of the mainstream TFT liquid crystal panel is between 400-1500 nit, and the uniformity is between 70%-90%. As the brightness value increases, the uniformity shows a rapid decline trend. Because LED is the mainstream device of backlight, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G02F1/13357
Inventor 陈文源赖海涛沈军左佳
Owner SUZHOU HUAXING YUANCHUANG TECH CO LTD
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