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Backlight module, display device and drive method of display device

A technology of backlight module and display device, which is applied to lighting devices, fixed lighting devices, components of lighting devices, etc., can solve problems such as color cracking, improve utilization rate, reduce power consumption, and improve light utilization rate Effect

Inactive Publication Date: 2014-09-03
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a backlight module, a display device and a driving method thereof, so as to solve the technical problem that color cracking occurs in the existing FSC liquid crystal display

Method used

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  • Backlight module, display device and drive method of display device
  • Backlight module, display device and drive method of display device
  • Backlight module, display device and drive method of display device

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the embodiment of the present invention provides a backlight module 10, including a controller and several partition backlights 2 (the controller can usually be arranged under the partition backlight, so figure 1 controller not shown). The shape of the partitioned backlight 2 is preferably rectangular, and each partitioned backlight 10 has the same shape and size.

[0039] The partitioned backlights 2 can be closely arranged in an array, and the number of them can range from 200 to 36864. For example, a total of 600 partitioned backlights 2 can be arranged in a 30×20 array. As another example, when the backlight module 10 is applied to an ultra-high-definition (UD) television with a resolution of 3840×2160, the number of partitioned backlights 2 can be 36864, and they can be arranged in an array of 256×144. Each partitioned backlight 2 only provides backlight for 225 (15×15) pixel units.

[0040] Each partition backlight includes at least ...

Embodiment 2

[0065] Such as Figure 5 As shown, the backlight module provided by the embodiment of the present invention is basically the same as the backlight module provided by the first embodiment, the difference is that in the backlight module 10 provided by this embodiment, each partition backlight 2 includes independently driven Red light source 2R, blue light source 2B, and green light source 2G. The controller (not shown in the figure) in the backlight module 10 can control the duty ratios of the red light source 2R, the blue light source 2B and the green light source 2G in one frame time in the partition backlight 2, thereby controlling each partition backlight 2 The chromaticity and luminance in this frame time enable each partitioned backlight 2 to have different chromaticity and luminance.

[0066] The display device provided by the embodiment of the present invention includes a backlight module and a liquid crystal module. Wherein, the backlight module is the above-mentioned...

Embodiment 3

[0079] An embodiment of the present invention provides a display device, including components such as a backlight module, a liquid crystal module, an image information processing unit, a signal processor, and a clock controller. Wherein, the backlight module, image information processing unit, signal processor and clock controller are the same as the backlight module, image information processing unit, signal processor and clock controller in Embodiment 1 or Embodiment 2. In this embodiment, each pixel unit of the liquid crystal module includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the red sub-pixel is provided with a red filter layer, and the green sub-pixel is provided with a green filter layer. , a blue filter layer is arranged in the blue sub-pixel.

[0080] That is, the liquid crystal module in Embodiment 1 or Embodiment 2 is replaced with a common liquid crystal module with red, green, and blue pixel structures. The functions of the backlight module,...

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Abstract

The invention discloses a backlight module, a display device and a drive method of the display device, and belongs to the technical field of displaying. The technical problem that the color crack phenomenon exists in an existing FSC liquid crystal displayer is solved. The backlight module comprises a controller and a plurality of partition backlights. Each partition backlight comprises at least two light sources with different colors, wherein the two light sources are independently driven. The controller controls the turning-on time of the light sources with different colors in all partition backlights. The backlight module can be used for liquid crystal display televisions, liquid crystal displays, mobile phones, tablet personal computers and other display devices.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a display device and a driving method thereof. Background technique [0002] With the development of display technology, a liquid crystal display (LCD) has become the most common flat panel display device. [0003] Among them, the liquid crystal display using Field Sequential Color (FSC) method to display images does not need to be provided with red, green, and blue color filter layers, thereby reducing light loss and improving backlight utilization. [0004] The display principle of the existing FSC liquid crystal display is to divide each frame of image into three color fields displayed in sequence. In the first color field, the backlight module only emits red light and drives the liquid crystal module to display the red part of the frame image; in the second color field, the backlight module only emits green light and drives The liquid crystal module is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V9/10G09G3/34F21V9/40
CPCG09G3/3413G09G3/3607G09G2300/0452G09G2310/0235G09G3/3696G09G2310/0237G09G2310/08G09G2320/0242
Inventor 樊勇康志聪张简圣哲
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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