Backlight module, driving method thereof, and display device

A technology of backlight module and driving method, which is applied in the directions of optics, nonlinear optics, static indicators, etc., can solve the problems of obvious flickering phenomenon and backlight flickering, and achieve the effect of increasing scanning frequency, improving quality, and improving backlight flickering

Active Publication Date: 2019-04-26
XIAMEN TIANMA MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While updating the PWM data, all the light sources are turned off, that is, the scanning of the light source is suspended, which will introduce a low-frequency component to the scanning frequency of the light source, which will cause the problem of backlight flickering, and the longer the backlight scanning pause time, the flickering phenomenon will occur. more obvious

Method used

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  • Backlight module, driving method thereof, and display device
  • Backlight module, driving method thereof, and display device
  • Backlight module, driving method thereof, and display device

Examples

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Embodiment Construction

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0022] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0023] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0024] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a backlight module, a driving method thereof and a display device. The backlight module comprises a light-emitting area, at least one scanning driving module and at least one data updating module, wherein the light-emitting area comprises a plurality of control lines, a plurality of signal lines and a plurality of light-emitting units; the data updating module comprises a first storage unit and a second storage unit which are connected electrically; before a light-emitting stage, the first storage unit is used for receiving a data signal of a first light-emitting frameand transmitting the data signal to the second storage unit; on a mth light-emitting frame, the second storage unit is used for supplying a data signal of the mth light-emitting frame to the signal line, and the first storage unit is used for receiving a data signal of a (m+1)th light-emitting frame; before starting of the (m+1)th light-emitting frame, the first storage unit transmits a data signal of the (m+1)th light-emitting frame to the second storage unit; N and m are positive integers; N is larger than or equal to 2; and m larger than or equal 1 and less than or equal to N-1. Compared with the prior art, the backlight module has the advantages that the flashing phenomenon of the backlight can be improved; the scanning frequency is improved; and the power consumption is saved.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a backlight module, a driving method thereof, and a display device. Background technique [0002] A display device provided in the prior art includes a backlight module and a display panel. Wherein, the display panel itself does not emit light, and the function of the backlight module is to supply sufficient brightness and evenly distributed light sources to the display panel. [0003] According to the relative position of the light source in the backlight module, the backlight module can be divided into an edge-type backlight module and a direct-type backlight module. [0004] For the direct-type backlight module, in the prior art, its driving methods are divided into two types: one-to-one and scanning. However, in the driving sequence of the existing scanning backlight module, it is necessary to update the PWM before the next frame is displayed. (Pulse Width...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G02F1/13357
CPCG02F1/133602G09G3/3406G09G2330/021G02F1/133612
Inventor 黄敏孙莹许育民
Owner XIAMEN TIANMA MICRO ELECTRONICS
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