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Shutter 3D LCD TV ghosting eliminating device and method for not influencing brightness

A liquid crystal TV, ghost elimination technology, applied in the direction of electrical components, optics, instruments, etc., can solve the problems of slow reaction speed of liquid crystal molecules, reduce the brightness and contrast of the display screen, affect the 3D effect, etc., so that the sense of layering is not affected, The subjective effect is consistent and the effect of eliminating ghosting phenomenon

Inactive Publication Date: 2012-07-11
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the previous analysis, the blanking period is 0.3335ms, so when the L frame is displayed, the R frame will be displayed after 0.3335ms, but due to the slow reaction speed of liquid crystal molecules, generally about 8ms, so when the R frame is displayed, the L frame image will remain , when the L frame is displayed, the R frame image will remain, which will affect the 3D effect or even lack the functionality of the 3D effect. Figure 4 ), there are two problems in this way: on the one hand, it greatly reduces the brightness and contrast of the display screen, which affects the subjective effect; on the other hand, it can only improve crosstalk, but cannot eliminate it.

Method used

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  • Shutter 3D LCD TV ghosting eliminating device and method for not influencing brightness

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Experimental program
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Effect test

Embodiment 1

[0047] A method for eliminating ghosting in a shutter 3D LCD TV without affecting brightness comprises steps:

[0048] Step S1: The main chip parses the input 3D signal into the left eye frame L signal and the right eye frame R signal, and stores them in the memory, wherein each frame is stored twice, and the memory stored signal is converted into a differential signal and input to the In the LCD module;

[0049] Step S2: Increase the operating frequency of the main chip, control the output signal of the backlight switch control circuit to control the liquid crystal module, wherein the initial frequency of the main chip is 120 Hz, and the main chip outputs a driving field frequency of 240 Hz after the phase-locked loop frequency multiplication process, Control the backlight switch control circuit to work;

[0050] Step S3: The main chip sends a 3D synchronization signal to the 3D synchronization transmitter, and the 3D synchronization receiver receives the control signal sent...

Embodiment 2

[0052] Embodiment 2: On the basis of Embodiment 1, the specific process of controlling the LED backlight of the liquid crystal module by the backlight switch control circuit in step S3 is as follows: the backlight switch control circuit outputs the left-eye frame L signal to the right-eye frame R differential signal on the main chip Or during the switching process of the right-eye frame R signal to the left-eye frame L differential signal, the backlight switch control circuit controls the LED backlight of the liquid crystal module, so that the LED backlight of the liquid crystal module is inserted into black and does not perform signal display, and the backlight switch control circuit During the switching process of the left-eye frame L signal to the left-eye frame L differential signal or the right-eye frame R signal to the right-eye frame R differential signal output by the memory, the backlight switch control circuit controls the LED backlight of the liquid crystal module to ...

Embodiment 3

[0053] Embodiment 3: On the basis of Embodiment 2, the specific process of controlling the 3D left glasses and 3D right glasses in the step S3 is as follows: when the main chip outputs the first monocular frame and the second monocular frame differential signal to the liquid crystal module, the 3D Left glasses, at this time, the 3D left glasses are transparent, and the 3D right glasses are turned off; when the main chip outputs the differential signal of the third monocular frame and the fourth monocular frame to the LCD module, the 3D right glasses are turned on, and the 3D right glasses are transparent, and the 3D Close the left eyeglass, set the first left-eye frame L signal as the first monocular frame, the second left-eye frame L signal as the second monocular frame, and the first right-eye frame R signal as the third monocular frame according to the data storage order in the memory , The R signal of the second right-eye frame is the fourth single-eye frame.

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Abstract

The invention belongs to the field of shutter 3D LCD TV signal processing, and particularly relates to a shutter 3D LCD TV ghosting eliminating method for not influencing brightness so as to avoid the phenomenon of ghosting caused by liquid crystal response time. For solving the problems in the prior art, the invention provides the shutter 3D LCD TV ghosting eliminating method for not influencing brightness. By repeatedly outputting a left eye frame L signal and a right eye frame R signal in the format of LLRR, and then controlling the synchronous closing and opening of a 3D left eye spectacle or a 3D right eye spectacle through a main chip as well as the backlight of an LED, the left eye spectacle is enabled to be capable of seeing a pure L frame only and the right eye spectacle is enabled to be capable of seeing a pure R frame only.

Description

technical field [0001] The present invention aims at the field of shutter 3D liquid crystal television signal processing, and in particular relates to a ghost elimination device and method for a shutter 3D liquid crystal television that does not affect brightness due to ghost phenomenon caused by liquid crystal response time. Background technique [0002] As the mainstream component of the current terminal display, the liquid crystal panel has the advantages of ultra-thin, light weight, low power consumption, high-definition resolution, high reliability, long service life, and no radiation; however, the liquid crystal panel is a holding type display device, and the reaction speed of liquid crystal molecules Slow (the response speed of the LCD panel is slow), generally lasting about 8ms, or even higher. [0003] The current mainstream 3D LCD panel field frequency is 100hz or 120hz. For the convenience of description, the following parameters are uniformly calculated at 120hz....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00G02B27/22G09G3/36G09G3/34
Inventor 吴久清聂朝刚
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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