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Backlight module and display equipment

A backlight module, backlight technology, applied in static indicators, semiconductor lamps, instruments, etc., can solve problems such as uneven brightness

Active Publication Date: 2020-07-14
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a backlight module and a display device to alleviate the technical problem of uneven brightness in the existing LED backlight module

Method used

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  • Backlight module and display equipment
  • Backlight module and display equipment
  • Backlight module and display equipment

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Experimental program
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Embodiment Construction

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the a...

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Abstract

The invention provides a backlight module and display equipment. The backlight module comprises a backlight source and a driving circuit used for driving the backlight source, wherein the backlight source comprises a plurality of backlight units arranged in an array, and each backlight unit corresponds to one partition of the liquid crystal display panel; in the driving circuit corresponding to atleast one backlight unit, the data signal input module is used for inputting a first data signal to a first point in a detection stage; the driving module is connected with the data signal input module through a first point and is connected with the backlight unit through a second point, and the driving module is used for driving the backlight unit to emit light; the detection module is connectedwith the driving module through a second point and is used for detecting the threshold voltage of the driving module in the detection stage; the storage module is connected with the driving module through a first point and used for storing threshold voltage of the driving module; the data signal input module is also used for inputting a compensated second data signal to the first point accordingto the threshold voltage detected by the detection module in a display stage. The light emitting uniformity of the backlight module is improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] In the existing AM-LED backlight module, the LED device is usually driven by a thin-film transistor drive circuit to emit light. However, due to the process technology or aging, the threshold voltage of the drive transistor in the drive circuit is prone to drift, making different LEDs in the plane In the drive circuit of the device, the threshold voltage of the drive transistor is different. Even if the voltage applied to the drive transistor is the same, the actual drive current flowing through the LED device will be different, resulting in differences in the brightness of the LED device and the brightness of the entire backlight module. uniform. [0003] Therefore, the existing LED backlight module has the technical problem of uneven brightness, which needs to be improved. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/3426Y02B20/30G09G3/32G09G2310/08G09G2300/0866G09G3/36G09G2300/0819G09G2320/0233
Inventor 蓝庆生王拂依
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD