Liquid crystal display device and method of driving the same
A liquid crystal display and device technology, which is applied in the field of liquid crystal display devices, and can solve the problems that the LCD device 10 cannot be driven in a narrow viewing angle mode, the weight and volume thickness of the LCD device 10 become larger, and the adhesion step cannot be applied, etc.
Inactive Publication Date: 2009-12-09
LG DISPLAY CO LTD
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[0009] However, since the LCD device 10 further includes additional elements such as the third and fourth substrates 42 and 44, the second liquid crystal layer 46, and the third and fourth polarizers 48 and 50 compared with conventional LCD devices, the LCD Device 10 becomes larger in weight and volume (including thickness)
In addition, since light from a backlight unit (not shown) of the LCD device 10 passes through this additional element, the brightness of the LCD device 10 is reduced.
In addition, the misalignment of the adhesion of the first and second liquid crystal cells 20 and 40 leads to deterioration of the LCD device 10, and the apparatus and procedures used for conventional LCD devices cannot be adapted for this adhesion step.
In addition, since the second liquid crystal unit 40 as a switching unit has a passive matrix type, the LCD device 10 cannot be driven in various narrow viewing angle modes.
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[0032] Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. At all times, the same reference numerals are used to refer to the same or similar parts.
[0033] figure 2 is a view showing pixels of the liquid crystal display device according to the first embodiment of the present invention.
[0034] exist figure 2 Among them, the liquid crystal display device 100 includes a plurality of gate lines 110, a plurality of data lines 120, a plurality of thin film transistors (TFT) T, a plurality of storage capacitors C ST and multiple liquid crystal capacitors C LC. The plurality of data lines 120 intersect the plurality of gate lines 110, thereby defining first, second, third and fourth sub-pixels SP1, SP2, SP3 and SP4 constituting a unit pixel for a color image. The TFT T is connected to the gate line 110 and the data line 120 so as to correspond to a sub-pixel. storage capacitor C ST and liquid crystal cap...
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Abstract
The invention discloses a liquid crystal display device and a method of driving the same. A liquid crystal display device includes: first and second substrates facing and spaced apart from each other, each of the first and second substrates having an image-displaying sub pixel and a viewing angle-adjusting sub pixel; a thin film transistor corresponding to each of the image-displaying sub pixel and the viewing angle-adjusting sub pixel; a liquid crystal display layer between the first and second substrates, the liquid crystal layer having a negative dielectric constant anisotropy; a first field distortion means in the image-displaying sub pixel; and a second field distortion means in the viewing angle-adjusting sub pixel.
Description
[0001] This application claims priority from Korean Patent Application No. 2008-0053237 filed on Jun. 5, 2008, which is hereby incorporated by reference in its entirety. technical field [0002] The present application relates to a liquid crystal display device, in particular to an in-cell liquid crystal display device with a switchable viewing angle and a method for driving the in-cell liquid crystal display device. Background technique [0003] A liquid crystal display (LCD) device includes two substrates facing and spaced apart from each other and a liquid crystal layer between the two substrates, and generates an image using optical anisotropy and polarization characteristics of liquid crystal molecules of the liquid crystal layer. The liquid crystal molecules have an elongated shape, and due to optical anisotropy characteristics, the polarization of light varies with the alignment direction of the liquid crystal molecules. Accordingly, the LCD device displays images by ...
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IPC IPC(8): G02F1/1362G09G3/36H01L27/12H01L21/84
CPCG02F1/133707G02F2001/134345G02F1/133512G02F1/1323G02F1/133514G02F1/134345G02F1/133G09G3/20G09G3/36
Inventor 金台翰宋寅赫李炅彦
Owner LG DISPLAY CO LTD