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Time sequence controller, display device, and display driving method

A technology of timing controller and driving method, applied in the direction of instruments, static indicators, etc., can solve the problem of periodic flickering of frames without polarity reversal

Active Publication Date: 2017-08-01
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a timing controller, a display device, and a display driving method to solve the problem of periodic flickering in frames with non-reversed polarity

Method used

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  • Time sequence controller, display device, and display driving method
  • Time sequence controller, display device, and display driving method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0039] figure 2 It is a schematic diagram of a timing controller in Embodiment 1 of the present invention, such as figure 2 As shown, the timing controller 202 of this embodiment includes: a first digital gamma correction unit 2021, a second digital gamma correction unit 2022 and a micro control unit 2023, wherein the micro control unit 2023 is used to:

[0040] Counting the output frame after receiving the video signal, and determining whether the current frame output needs to reverse the polarity of the pixel digital voltage according to the count;

[0041] When it is determined that the current frame needs polarity inversion, the pixel digital voltage is calculated by using the first digital gamma correction table read from the first digital gamma correction unit 2021;

[0042] When it is determined that the polarity of the current frame needs not to be reversed, the second digital gamma correction table read from the second digital gamma correction unit 2022 is used to ...

Embodiment 2

[0052] image 3 It is a schematic diagram of the timing controller of Embodiment 2 of the present invention, such as image 3 As shown, compared with the timing controller 202 of Embodiment 1, the timing controller 202 of this embodiment further includes:

[0053] Digital gamma buffer 2024, for reading the first digital gamma correction table from the first digital gamma correction unit 2021 and reading the second digital gamma correction table from the second digital gamma correction unit 2022 respectively Tables are cached.

[0054] The micro control unit 2023 reads the pre-cached first digital gamma correction table and the second digital gamma correction table from the digital gamma buffer 2024, which can speed up the speed of reading the digital gamma correction table of the micro control unit .

[0055] In this embodiment, the micro control unit determines whether the output current frame needs to perform polarity inversion of the pixel digital voltage according to th...

Embodiment 3

[0060] Figure 4 It is a schematic diagram of a display device according to an embodiment of the present invention, such as Figure 4 As shown, the display device of this embodiment includes: a display module 201 and a timing controller 202 .

[0061] The timing controller 202 counts the output frames after receiving the video signal, and determines whether the output current frame needs polarity inversion of the pixel digital voltage according to the count; when it is determined that the current frame needs polarity inversion, Using the first digital gamma correction table read from the first digital gamma correction unit to calculate the pixel digital voltage; Read the second digital gamma correction table to calculate the pixel digital voltage, and output the calculated pixel digital voltage to the display module 201 for displaying the video signal.

[0062] The pixels in the display module 201 are turned on according to the pixel digital voltage, and the display module 2...

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Abstract

The invention discloses a time sequence controller. The time sequence controller comprises a first digital gamma correction unit, a second digital gamma correction unit, and a micro-control unit. The micro-control unit is used to count output frames after receiving a video signal, and is used to determine whether polarity reversal of a pixel digital voltage of a current frame is required according to a counted number. When the polarity reversal of the current frame is required, a first digital gamma correction table read from the first digital gamma correction unit is used to calculate the pixel digital voltage. When the polarity reversal of the current frame is not required, a second digital gamma correction table read from the second digital gamma correction unit is used to calculate the pixel digital voltage. The calculated pixel digital voltage is output to a display module used to display the video signal. A problem of periodic flickering during occurrence of polarity non-reversal frames is solved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a timing controller, a display device and a display driving method. Background technique [0002] The liquid crystal molecules used in liquid crystal displays (LCD for short) have a characteristic that the level of the pixel digital voltage applied to both ends of the pixel electrodes cannot be fixed all the time, otherwise the liquid crystal molecules will not be able to move because the characteristics have been destroyed. Then rotate in response to changes in the electric field to form different gray brightnesses. In order to avoid the above situation, in the prior art, the pixel digital voltage is usually divided into two polarities (positive polarity and negative polarity). When the voltage of the pixel electrode is higher than the voltage of the common electrode, it is called positive polarity. When the voltage of the electrode is lower than the voltage of the common elec...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/36G09G2320/0276G09G3/3614G09G3/3648G09G2320/0673G09G2310/08G09G2320/0204G09G2320/0247
Inventor 朴根聂春扬戴珂尹傛俊
Owner BOE TECH GRP CO LTD