Display device driving method

a technology of display device and driving method, which is applied in the direction of static indicating device, non-linear optics, instruments, etc., can solve the problems of data signal and sensing signal of optical sensing circuits that disturb each other

Inactive Publication Date: 2020-12-31
AU OPTRONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a problem with conventional optical touch control LCDs. In these LCDs, there are some issues with the data signal and the sensing signal of the optical sensing circuits. The text suggests that there is a need for a solution to this problem.

Problems solved by technology

However, parasitic elements are coupled between the data line corresponding to the pixel circuits and the output path of the optical sensing circuits, and thus the data signal and the sensing signal of the optical sensing circuits disturb each other.

Method used

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Embodiment Construction

[0021]Reference will now be made in detail to the present embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.

[0022]FIG. 1 is a simplified functional block diagram of a display device 100 according to one embodiment of the present disclosure. The display device 100 comprises multiple pixel circuits 110, multiple optical sensing circuits 120, a source driving circuit 130, a reading circuit 140, multiple multiplexers 150, and a gate driving circuit 160. The source driving circuit 130 and the reading circuit 140 are coupled with each other.

[0023]Each of the multiple multiplexers 150 is coupled with the source driving circuit 130, the reading circuit 140, and a data line 170, and is also coupled with a column of pixel circuits 110 and a column of optical sensing circuits 120 through the data line 170. The multiplexer 150...

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Abstract

A display device driving method is provided, which is applicable to a display device including pixel circuits coupled with a first node point, a source driving circuit for providing a data signal, and a reading circuit. The display device driving method includes operations: coupling the first node point with the source driving circuit or the reading circuit; supplying first control signals to the pixel circuits, where the first control signals sequentially provide a first impulse so that the pixel circuits sequentially receive the data signal from the first node point; supplying second control signals to optical sensing circuits, where the second control signals sequentially provide a second impulse so that the optical sensing circuits sequentially output a sensing signal to the first node point; amplifying the sensing signals and outputting the amplified sensing signals by the reading circuit, where durations of the first impulses the second impulses are not overlapped.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a divisional of U.S. application Ser. No. 16 / 263,008, filed Jan. 31, 2019, which claims priority to Taiwan Application Serial Number 107132517, filed Sep. 14, 2018, all of which are herein incorporated by reference in their entireties.BACKGROUNDField of Invention[0002]The present disclosure relates to a display device and a display device driving method thereof. More particularly, the present disclosure relates to a driving method applicable to a display device comprising an optical sensing circuit.Description of Related Art[0003]The liquid-crystal display (LCD) is the most popular display technology due to the advantages such as low cost, low power consumption, and structure that is thin and light. Nowadays, a demand for touch control or writing directly on the panel is increasing, and thus the LCDs with optical touch control function become more popular.[0004]The conventional optical touch control LCDs have the pixel ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G09G3/36G02F1/133G02F1/1362
CPCG09G3/3648G02F1/13624G02F1/13306G09G3/3611G02F1/136286G02F1/136213G09G3/36G09G3/3677G09G2354/00G09G2310/0297
InventorHUNG, CHIA-CHECHENG, MAO-HSUNYU, JIAN-SHEN
OwnerAU OPTRONICS CORP