Device and method for controlling backlight of 3D (three-dimensional) liquid crystal display screen and liquid crystal display television

A liquid crystal display and backlight control technology, applied in electrical components, static indicators, instruments, etc., can solve problems such as affecting the 3D display effect of the liquid crystal display, uneven brightness of the entire screen, etc., to improve the 3D display effect and uniform brightness. Effect

Active Publication Date: 2014-12-17
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brightness of each frame of the left-eye image and right-eye image displayed on the LCD screen in the middle scanning area is better than that of the upper and lower edge images, that is, the image display effect in the middle scanning area is better than that in the upper and lower edge scanning areas. Causes the brightness of the entire screen of the LCD screen to be uneven during the image display process, thereby affecting the overall 3D display effect of the LCD screen

Method used

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  • Device and method for controlling backlight of 3D (three-dimensional) liquid crystal display screen and liquid crystal display television
  • Device and method for controlling backlight of 3D (three-dimensional) liquid crystal display screen and liquid crystal display television
  • Device and method for controlling backlight of 3D (three-dimensional) liquid crystal display screen and liquid crystal display television

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The backlight control method of the 3D liquid crystal display screen in this embodiment is described by taking a 3D liquid crystal display screen with a left and right eye image display frequency of 120hz as an example. To achieve stable synchronization, turn on the backlight source group corresponding to this part of the LCD screen. This implementation takes the turn-on timing of the backlight group as an example during the scanning and display process of 5 frames of left-eye images and 5 frames of right-eye images on a 42-inch 3D liquid crystal display screen including 1080 scanning lines as an example.

[0064] like figure 2 As shown, the backlight control method of the 3D liquid crystal display screen in this embodiment, the liquid crystal display screen is illuminated by 6 groups of backlight sources to display the left-eye image and the right-eye image respectively, and the first group of backlight sources is turned on until the last time. The time between the tur...

Embodiment 2

[0078] In this embodiment, the backlight control method for a 3D liquid crystal display screen is described by taking a 3D liquid crystal display screen with a left and right eye image display frequency of 120hz as an example. Display unit. In this embodiment, the opening mode of the backlight is the scanning mode, that is, when the liquid crystal molecules of the liquid crystal display screen are deflected to be stable and synchronously, the backlight source group corresponding to the part of the liquid crystal display screen is turned on. This implementation takes the turn-on timing of the backlight group as an example in the process of scanning and displaying 3 frames of left-eye images and 3 frames of right-eye images continuously displayed by one display unit on a 55-inch 3D liquid crystal display screen including 1080 scanning lines. .

[0079] like Figure 4 As shown, the backlight control method of the 3D liquid crystal display screen in this embodiment, the liquid c...

Embodiment 3

[0093] In this embodiment, the backlight control method of a 3D liquid crystal display screen is described by taking a 3D liquid crystal display screen with a left and right eye image display frequency of 240hz as an example. Display unit. In this embodiment, the opening mode of the backlight is a flickering mode, that is, a control mode in which the backlight source group is simultaneously turned on and off. This implementation is introduced by taking the turn-on timing of the backlight group as an example during the scanning and display process of 3 frames of left-eye images and 3 frames of right-eye images continuously displayed by one display unit on a 60-inch 3D liquid crystal display screen including 1080 scanning lines. .

[0094] like Image 6 As shown, the backlight control method of the 3D liquid crystal display screen in this embodiment, the liquid crystal display screen is illuminated by 6 groups of backlight sources to display the left-eye image and the right-ey...

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Abstract

The invention discloses a device and a method for controlling a backlight of a 3D (three-dimensional) liquid crystal display screen and a liquid crystal display television, and mainly provides a backlight control method for optimizing display effects of the liquid crystal display screen by adjusting open time periods of the backlight during image scanning. The method for controlling the backlight of the 3D liquid crystal display screen includes: respectively taking continuous N-frame left eye images and continuous N-frame right eye images as an image display group, wherein the image display group at least includes that when scanning of a one-frame image is started, a corresponding backlight is started at the same time, when scanning of the one-frame image is completed, the corresponding backlight is stopped, and starting of the backlight lasts within a time period t. A union set of backlight starting last time periods of the continuous N-frame left eye images is equal to the scanning time, and a union set of backlight starting last time periods of the continuous N-frame right eye images is equal to the scanning time. Using the device and the method for controlling the backlight of the 3D liquid crystal display screen can effectively promote image display effects of the liquid crystal display screen.

Description

technical field [0001] The present invention relates to the field of shutter-type 3D display, and more particularly, to a backlight source control method and device for a 3D liquid crystal display screen, and a liquid crystal television. Background technique [0002] The shutter type 3D liquid crystal display screen has scanning type and flickering type 3D display, wherein the scanning type display means that the multiple groups of backlight sources of the liquid crystal display screen are turned on in sequence when the liquid crystal molecules of the liquid crystal display screen are deflected stably and synchronously. Image display; the flickering display means that multiple groups of backlight sources of the liquid crystal display screen are turned on and off at the same time to display images. [0003] During the image display process of the 3D liquid crystal display screen with the matching 3D shutter glasses, in order to prevent the glasses from flickering when the gla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34H04N13/04
Inventor 杨杰张士利孙明郭思敏
Owner HISENSE VISUAL TECH CO LTD
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