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3D (three-dimensional) overvoltage confirming method, LCD (Liquid Crystal Display) driving method, LCD system and television

A technology of liquid crystal display and determination method, applied in the fields of 3D overvoltage determination, liquid crystal display drive, system, and television

Active Publication Date: 2012-09-12
GUANGDONG HISENSE ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no method that can effectively drive 3D liquid crystal display to prevent and effectively determine the overvoltage value of 3D liquid crystal TV. The accuracy of overvoltage value directly determines the color display effect of liquid crystal display.

Method used

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  • 3D (three-dimensional) overvoltage confirming method, LCD (Liquid Crystal Display) driving method, LCD system and television
  • 3D (three-dimensional) overvoltage confirming method, LCD (Liquid Crystal Display) driving method, LCD system and television
  • 3D (three-dimensional) overvoltage confirming method, LCD (Liquid Crystal Display) driving method, LCD system and television

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0101] As shown in Table 1, it is a preset overvoltage lookup table, which is a 6*6 matrix, where the values ​​distributed on the main diagonal are in the 3D state, and the image is at 0, 64, 128, 192, 224 , 255, the luminance value at 6 different grayscale values. This value is measured by a luminance meter and used as the standard luminance. The other values ​​are the overdrive voltage required to change the grayscale of the current frame to the grayscale of the next frame. Since each stable state of liquid crystal molecules corresponds to a certain voltage, and different gray scales correspond to different driving voltages, the overdriving voltage value in the overvoltage lookup table is represented by the gray scale corresponding to the overdriving voltage. For the convenience of explanation, the six letters arranged in a row corresponding to a row of a 6th-order matrix are A, B, C, D, E, F, which are called corresponding rows, and the six numbers arranged in a row of a 6th...

no. 2 example

[0115] As shown in Table 2, it is a preset overvoltage look-up table, which is a 9*9-order matrix, where the values ​​distributed on the main diagonal are in the 3D state, and the image is at 0, 32, 64, 96, 128, 160, 192, 224, 255, the brightness value of 9 different grayscale values, this value is measured by a brightness meter, as a standard brightness, other values ​​are required for the current frame grayscale to change to the next frame grayscale overdrive voltage. Since each stable state of liquid crystal molecules corresponds to a certain voltage, and different gray scales correspond to different driving voltages, the overdriving voltage value in the overvoltage lookup table is represented by the gray scale corresponding to the overdriving voltage. For the convenience of explanation, the six letters arranged in a row corresponding to a row of a 6th-order matrix are A, B, C, D, E, F, which are called corresponding rows, and the six numbers arranged in a row of a 6th-orde...

no. 3 example

[0126] On the basis of the above two overvoltage lookup table establishment methods, it is further expanded in order to increase the standard brightness of the gray scale in the driving table for verification and improve the accuracy of the overvoltage lookup table, as shown in Table 3, which is a preset The overvoltage look-up table is a 17*17-order matrix, where the values ​​distributed on the main diagonal are in 3D state, and the images are at 0, 32, 64, 96, 128, 160, 192, 224, 255, Brightness values ​​at 17 different grayscale values, which are measured by a brightness meter and used as standard brightness.

[0127]

[0128] table 3

[0129]Similarly, by dividing the picture into left and right two pixel areas, it can also be two upper and lower areas, or two areas in an interval column. Each pixel area is displayed separately, and each pixel area corresponds to the left and right sides of the 3D glasses. Lens, now divide the picture into left and right two pixel area...

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Abstract

The invention discloses 3D (three-dimensional) overvoltage confirming method, an LCD (Liquid Crystal Display) driving method, an LCD system and a television and mainly aims at providing a method for precisely confirming the overvoltage parameter under a 3D state. The 3D overvoltage confirming method comprises the following steps: 1.1 measuring the brightness of a plurality of different gray scales at 0 and 255 and at the range from 0 to 255 of an LCD as reference brightness; 1.2 presetting overvoltage needed by change between two different adjacent grey scale images; 1.3 driving the display by utilizing the preset overvoltage to test the brightness of the LCD after a set time for driving of the overvoltage correspondingly as test brightness; 1.4 comparing the reference brightness with the test brightness, if not, regulating the overvoltage according to the comparison result, and returning the step 1.3, and if yes, stopping. According to the invention, the accuracy of the overvoltage is further improved, and the brightness of the LCD is effectively promoted.

Description

technical field [0001] The invention relates to a 3D overvoltage determining method, a liquid crystal display driving method, a system and a television. Background technique [0002] With the rapid development of TV technology and the advancement of technology, 3D TV is becoming more and more common and mature. Among them, the shutter 3D TV can enjoy the full HD 3D effect, and it is relatively cost-effective and can achieve better resolution. There are 3D TV products occupying a larger market share. The 120hz shutter 3D TV uses its high refresh rate of 120hz to divide one frame of image into two to form two groups of images corresponding to the left and right eyes. lens, close the left lens of the shutter type 3D glasses at the same time, open the left lens of the shutter type 3D glasses when the TV content displays the left eye image, and close the right lens of the shutter type 3D glasses at the same time, because the images seen by the left and right eyes are different. ...

Claims

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Application Information

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IPC IPC(8): G09G3/36H04N5/57H04N5/64
Inventor 张钰枫杨杰黄顺明赵彩霞
Owner GUANGDONG HISENSE ELECTRONICS CO LTD
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