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Method for adjusting common voltage of liquid crystal display panel

A common voltage and liquid crystal panel technology, applied to instruments, static indicators, etc., can solve the problems affecting the display effect of the liquid crystal panel, the quality of the liquid crystal panel shipment, etc., to achieve the effect of ensuring the display effect and reducing the difference in response sensitivity

Active Publication Date: 2015-11-11
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, there are cases where the optimal common voltages of the liquid crystal panels corresponding to the red R, green G, and blue B screens are inconsistent. Due to the difference in response sensitivity of the photodiode to the three color screens of R, G, and B, the synthesized in There will be a deviation between the optimal common voltage corresponding to the minimum flicker found in the grayscale screen and the actual optimal common voltage, which will affect the display effect of the LCD panel and the shipment quality of the LCD panel

Method used

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  • Method for adjusting common voltage of liquid crystal display panel
  • Method for adjusting common voltage of liquid crystal display panel
  • Method for adjusting common voltage of liquid crystal display panel

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Embodiment Construction

[0034] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0035] see figure 2 , the present invention provides a method for adjusting the common voltage of a liquid crystal panel, comprising the following steps:

[0036] Step 1, such as image 3 As shown, a liquid crystal panel 100 , a photosensitive probe 110 , and a flicker sensor 140 electrically connected to the photosensitive probe 110 are provided.

[0037]Specifically, the photosensitive probe 110 is a photosensitive diode, the number of which can be one or more, and is used for sensing light signals, converting the light signals into electrical signals and transmitting them to the flicker sensor 140 . When the number of the photosensitive probes 110 is multiple, multiple photosensitive probes 110 are arranged in different areas of the liqu...

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Abstract

The invention provides a method for adjusting the common voltage of a liquid crystal display panel. According to the method, a red optimal common voltage, a green optimal common voltage and a blue optimal common voltage corresponding to a red flicker test image, a green flicker test image and a blue flicker test image are respectively found out; a red brightness weighting factor, a green brightness weighting factor and a blue brightness weighting factor respectively corresponding to a red pure-color image, a green pure-color image and a blue pure-color image are introduced, so that the optimal common voltage of the liquid crystal display panel can be calculated. With the method adopted, when the optimal common voltages of the liquid crystal display panel which are respectively corresponding to the red image, the green image and the blue image are inconsistent, difference among the optimal common voltages of the red image, the green image and the blue image can be offset through the red brightness weighting factor, the green brightness weighting factor and the blue brightness weighting factor, and therefore, the optimal common voltage of the liquid crystal display panel can be found out simply and conveniently, and the deviation of the optimal common voltage which is caused by the difference of response sensitivity of a photosensitive probe to light in different wave lengths can be decreased.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for adjusting the common voltage of a liquid crystal panel. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer Screens, etc., dominate the field of flat panel displays. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to pour liquid crystal molecules between the thin film transistor array substrate (ThinFilmTransistorArraySubstrate, TFTArraySubstrate) and the color filter substrate (ColorFilter, CF), and apply a driving voltage on the two substrates to control the rotation directi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00
Inventor 何健
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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