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Data driver and display device using the same

A data driver and display device technology, applied to instruments, static indicators, etc., can solve problems such as high cost and long time for data drivers

Inactive Publication Date: 2015-06-17
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of data drives takes a lot of time and results in high costs

Method used

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

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Embodiment Construction

[0017] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0018] figure 1 is a schematic block diagram of a display device according to an exemplary embodiment of the present invention, and figure 2 is schematically shown figure 1 A view of the structure of the sub-pixel shown.

[0019] like figure 1 As shown, the display device includes a display panel 150 , a timing controller 110 , a gate driver 140 , a reference voltage generating unit 130 and a data driver 120 .

[0020] The timing controller 110 externally receives a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a data enable signal DE, a clock signal CLK, and a data signal DDATA. The timing controller 110 controls operation timings of the data driver 120 and the gate driver 140 by using timing signals such as a vertical sync signal Vsync, a horizontal sync signal Hsync, a data enable signal DE, a...

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Abstract

A data driver of a display panel includes a gamma voltage generating unit generating a gamma grayscale voltage for converting the digital data signal into an analog data signal; and a digital-to-analog conversion unit converting the digital data signal into an analog data signal in response to the gamma grayscale voltage. The gamma voltage generating unit generates the gamma grayscale voltage based on one of an external reference voltage and an internal reference voltage in response to a control signal.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2013-0155394 filed on December 13, 2013, which is incorporated herein by reference. technical field [0002] The present invention relates to a data driver and a display device using the same. Background technique [0003] As technology develops, the market for display devices that present information to users is expanding. Accordingly, the use of flat panel displays (FPDs) is increasing. Examples of the FPD include a liquid crystal display (LCD), an organic light emitting diode (OLED) display, a plasma display panel (PDP), and the like. [0004] An LCD device or an OLED display device includes a display panel including a plurality of sub-pixels arranged in a matrix and a driver for driving the display panel. [0005] The driver includes a gate driver that supplies a gate signal (also referred to as a scan signal) to the display panel, and a data driver that supplies a data signal to the display...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/36
CPCG09G3/3291G09G3/3685G09G3/3696G09G2310/027G09G2330/028G09G3/20
Inventor 曺畅训
Owner LG DISPLAY CO LTD