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Data driver and display device including the same

A technology of data driver and analog data, which is applied to instruments, static indicators, etc., can solve the problems of increased power consumption of the sample/hold circuit and insufficient settling time of the buffer input voltage, etc., to increase the settling time, prevent signal distortion, reduce Effect of Small Equivalent Capacitance

Pending Publication Date: 2022-04-22
SAMSUNG DISPLAY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the settling time of the buffer input voltage may be insufficient, or the power consumption of the sample / hold circuit may increase

Method used

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  • Data driver and display device including the same
  • Data driver and display device including the same
  • Data driver and display device including the same

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Embodiment Construction

[0040] Hereinafter, embodiments of the inventive concept will be described in more detail with reference to the accompanying drawings. In the drawings, the same reference numerals will be used for the same elements, and repeated descriptions of the same elements will be omitted.

[0041] figure 1 is a block diagram illustrating an embodiment of a display device 10 that may include a display panel 100 and a display panel driver 120 . The display panel driver 120 may include a timing controller 200 , a gate driver 300 , a gamma reference voltage generator 400 and a data driver 500 .

[0042] The display panel 100 may include a display area for displaying an image and a peripheral area adjacent to the display area. The display panel 100 may include pixels P and may display an image corresponding to input image data IMG based on light output from the pixels P. Referring to FIG. The gate lines GL1 to GLj may extend in a first direction D1, and the data lines DL1 to DLi may exten...

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Abstract

The invention provides a data driver and a display device including the same. The data driver includes a multi-channel sample / hold circuit electrically connected between a digital-to-analog converter and a buffer. The multi-channel sample / hold circuit includes a first sample / hold circuit connected to a first channel and a second sample / hold circuit connected to a second channel. The first sample / hold circuit performs a first driving operation and a second driving operation. The first driving operation includes sampling an analog data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second driving operation includes inputting a buffer input voltage to an input terminal of the buffer during an (n + 1)-th horizontal time. The second sample / hold circuit performs a second driving operation during the nth horizontal time, and performs the first driving operation during the (n + 1) th horizontal time.

Description

technical field [0001] One or more embodiments described herein relate to a data driver and a display device including the data driver. Background technique [0002] The display device controls the display panel using a data driver. The data driver may include a sample / hold circuit that performs a sampling operation and a hold operation during the first half horizontal time (1 / 2H) and performs a driving operation during the second half horizontal time (1 / 2H). In the case of driving a high-speed, high-resolution display, the first half horizontal time is relatively short. Therefore, the settling time of the buffer input voltage may be insufficient, or the power consumption of the sample / hold circuit may increase. Contents of the invention [0003] One or more embodiments described herein provide a data driver that increases sample / hold operation time to one horizontal time (1H). This can reduce the operating frequency, which in turn can reduce power consumption. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G3/3291G09G2310/027G09G2310/0294G09G2310/0291G09G2330/021G09G2320/0252G09G3/3275G09G3/3685G09G3/2092G09G2310/08
Inventor 黄英秀高俊哲权五照金起德金贞敏柳凤铉李炯玟崔昇勳
Owner SAMSUNG DISPLAY CO LTD
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