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LCD TV (Liquid Crystal Display TV) whole De-Mura method

A technology of LCD TV and complete machine, which is applied in the field of LCD TV display assembly, can solve problems such as affecting user experience and viewing effect, and achieve the effect of taking both display effect and production efficiency into consideration.

Active Publication Date: 2018-08-07
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

LCD TV sets often use different batches of LCD panels from different manufacturers. The LCD module mura, the design and manufacture of the whole set will inevitably produce new mura, which will eventually appear on the whole set, affecting user experience and viewing effects.

Method used

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  • LCD TV (Liquid Crystal Display TV) whole De-Mura method
  • LCD TV (Liquid Crystal Display TV) whole De-Mura method
  • LCD TV (Liquid Crystal Display TV) whole De-Mura method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 Shown, a kind of liquid crystal television complete set De-Mura method, its method step is as follows:

[0044] A. Randomly sample a new batch of LCD screens, assemble the sampled LCD screens into a prototype LCD TV, and use this LCD TV prototype as the LCD TV prototype to be inspected for this batch of LCD screens;

[0045] B. The mura data collection, data statistics and analysis of the LCD TV prototype to be inspected are carried out to obtain the mura data of the LCD TV prototype to be inspected, and the mura data of the LCD TV prototype to be inspected is used as the typical mura data of this batch of LCD screens;

[0046]C. Compare and analyze the typical mura data collected in this batch with the typical mura data collected in the previous batch. If the error of the two is within the control range, De-Mura correction will not be performed, and the archived software will be used. The state organizes mass production; if the error exceeds the contr...

Embodiment 2

[0057] Such as figure 1 Shown, a kind of liquid crystal television complete set De-Mura method, its method step is as follows:

[0058] A. Randomly sample a new batch of LCD screens, and assemble N LCD TV prototypes from N samples, where N≥2, and N is a natural number, and N LCD TV prototypes are used as the LCD TV prototypes of this batch. Check the LCD TV prototype;

[0059] B. Perform mura data collection, data statistics and analysis on N LCD TV prototypes to be inspected to obtain the mura data of the LCD TV prototypes to be inspected. The average value of the mura data of the LCD TV prototypes to be inspected is taken as the typical of this batch of LCD screens mura data;

[0060] C. Compare and analyze the typical mura data collected in this batch with the typical mura data collected in the previous batch. If the error of the two is within the control range, De-Mura correction will not be performed, and the archived software will be used. The state organizes mass pro...

Embodiment 3

[0071] This embodiment is described by taking a certain batch plan to produce 3000 sets of 55-inch LCD TV sets as an example.

[0072] First, randomly sample 3,000 pieces of 55-inch LCD screens from a certain company in the same batch, and select 6 pieces of LCD screens; assemble the sampled 6 pieces of LCD screens into 6 complete machines, and use them as the first inspection prototype of this batch .

[0073] Such as image 3 As shown, data collection is carried out in a dedicated darkroom, and the camera system is composed of a CCD camera, a PC, and a dedicated signal generator. Raw data acquisition for high grayscale signals.

[0074] Such as Figure 4 As shown, the original data of each whole machine is divided into mn blocks according to the same size. The original data of each block is composed of brightness information Y and color coordinate information (expressed by Cx, Cy). After the combination of mn blocks, it corresponds to the whole machine Raw data.

[0075...

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Abstract

The invention discloses an LCD TV (Liquid Crystal Display TV) whole De-Mura method. The method comprises the steps of A, performing random sampling on a new batch of LCDs and assembling the extractedLCD samples into an LCD TV prototype; B, performing mura data collection, data statistics and analysis on the to-be-checked LCD TV prototype to obtain mura data of the to-be-checked LCD TV prototype;C, performing comparative analysis on typical mura data collected in the current batch and typical mura data collected in the last batch; D, performing data collection, data analysis, comparison and objective effect checking on the prototype after being subjected to De-Mura data supplementation and correction so as to obtain compensatory data which meet requirements; and E, integrating the compensatory data which meet the requirements to a configuration data file of the to-be-checked LCD TV prototype for storage. As the LCDs in the same batch and the whole machine are subjected to the De-Muraprocessing in batches after the typical data is obtained through sampling, independent processing for each LCD is unnecessary, and both the display effect and the protection efficiency are realized.

Description

technical field [0001] The invention relates to the technical field of LCD TV display assembly, in particular to a De-Mura method for a complete LCD TV. Background technique [0002] The Mura phenomenon mainly refers to the uneven brightness and darkness of the LCD panel display, and now it also extends to the obvious difference in the color of the LCD panel. [0003] The LCD module uses a thin film transistor to control the rotation angle of the liquid crystal, and then the light source penetrated by the liquid crystal arranged at different angles through the backlight passes through the color filter to display different color combinations; due to the LCD module manufacturer's It is impossible to achieve perfection in materials and processes, and you will feel the difference in light, dark and color visually. LCD TV sets often use different batches of LCD panels from different manufacturers. The LCD module mura, the design and manufacture of the whole set will inevitably p...

Claims

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Application Information

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IPC IPC(8): H04N17/00
CPCH04N17/004
Inventor 聂朝刚马尚礼李薇
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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