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Liquid crystal display device and driving method thereof

A liquid crystal display, liquid crystal display panel technology, applied in static indicators, instruments, nonlinear optics, etc., can solve problems such as inability to transmit data drive ICs with voltage, unbalanced overall resolution of LCD panels, and blurred internal blocks.

Active Publication Date: 2008-01-02
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In other words, uniform voltage cannot be transmitted to the data driver IC far from the gamma reference voltage generating unit
[0019] As a result, the total resolution of the LCD panel is unbalanced, i.e., internal block blurring may occur

Method used

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  • Liquid crystal display device and driving method thereof
  • Liquid crystal display device and driving method thereof
  • Liquid crystal display device and driving method thereof

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Embodiment Construction

[0034] Referring now to the accompanying drawings, an LCD device and a driving method thereof according to the present invention will be described in detail.

[0035] 2 shows a connection state between a main PCB and a gamma voltage generating unit formed in a data driving IC in the LCD device according to the present invention.

[0036] As shown in FIG. 2, independently of the external interface, an additionally formed EEP-ROM (Electrically Erasable Programmable Read Only Memory) 118 is formed on the main PCB; a connector 120 through which information passes when required Input to the EEP-ROM 118 from the outside; a timing controller that controls a gamma voltage generating unit provided inside the data drive unit according to information input to the EEP-ROM 118; and an FPC (Flexible Printed Circuit) such as serial data (SDA) line and serial clock (SCLK) line for connecting the timing controller 112 and the gamma voltage generating unit provided inside the data driving unit ...

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PUM

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Abstract

A liquid crystal display (LCD) device with a register-type gamma reference voltage generating unit inside a data driving IC, thus to remove a source block dim phenomenon in a Chip on Glass (COG) cascade structure, and a driving method thereof. The LCD device comprises an LCD panel on which a plurality of gate lines and data lines intersect with each other. A TFT is formed at each intersection, to thus define images. A data driving unit supplies a gradation voltage to the LCD panel through a gamma voltage generating unit. A gate driving unit supplies a gate pulse to each gate line on the LCD panel. A timing controller controls the gate driving unit, the data driving unit and the gamma voltage generating unit.

Description

[0001] The present application relates to the contents of a prior Korean Application No. 10-2006-0061634 filed on Jun. 30, 2006, which is incorporated herein by reference in its entirety. technical field [0002] The present invention relates to a liquid crystal display device, in particular to a liquid crystal display device having a register-type gamma (gamma) reference voltage generating unit in a data driving IC and a driving method thereof, thereby achieving a chip-on-glass (COG) level Remove the source block dimphenomenon from the link structure. Background technique [0003] Generally, a liquid crystal display (LCD) device has optical anisotropy, which obtains a certain direction when the liquid crystal is arranged in a thin and long molecular structure, and the liquid crystal display device has a polarization state, when the liquid crystal is arranged in an electric field, the molecular arrangement direction depends on the magnitude of the electric field Variety. ...

Claims

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Application Information

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IPC IPC(8): G09G3/36G02F1/133
CPCG09G2310/027G09G3/3688G09G2320/0276G02F1/133G09G3/20G09G3/36
Inventor 林鸿烈
Owner LG DISPLAY CO LTD
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