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Liquid-crystal display device driving method, and liquid-crystal display device

A technology of a liquid crystal display device and a driving method, applied to static indicators, nonlinear optics, instruments, etc., capable of solving problems such as insufficient time shortening

Inactive Publication Date: 2010-06-30
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the bend alignment is difficult to spread to adjacent pixels across the bus lines, and therefore, the shortening of the time required for the splay-bend transition is insufficient.

Method used

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  • Liquid-crystal display device driving method, and liquid-crystal display device
  • Liquid-crystal display device driving method, and liquid-crystal display device
  • Liquid-crystal display device driving method, and liquid-crystal display device

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Experimental program
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Effect test

Embodiment approach 1

[0115] The following is based on Figure 1 to Figure 3 The first embodiment of the present invention will be described below. here, figure 1 It is a block diagram showing a schematic configuration of the liquid crystal display device 1 .

[0116] In the liquid crystal display device 1 of the present embodiment, a gate driver 62 as a scanning signal line driving circuit, a source driver 64 as a data signal line driving circuit, and a device for controlling the gate driver 62 and the source driver 64 are provided. A display control circuit 60 , a gray scale voltage source 66 , a counter electrode driving power source 68 for driving the counter electrode 27 , and an active matrix type liquid crystal display panel 5 .

[0117] Further, the liquid crystal display panel 5 of the above-mentioned liquid crystal display device 1 is provided with: a plurality of (m) gate bus lines 32 (GL1˜GLm) serving as scanning signal lines, which respectively cross these gate bus lines 32 (GL1˜GLm...

Embodiment approach 2

[0172] Next, a second embodiment of the present invention will be described. In addition, the structure other than the description of this embodiment is the same as that of Embodiment 1 mentioned above. In addition, for the convenience of description, the same reference numerals are attached to the components having the same functions as those shown in the drawings of the first embodiment above, and the description thereof will be omitted.

[0173] (Data signal line of source bus)

[0174] In addition, in the liquid crystal display panel 5 in which the pixels 30 are arranged in a matrix, when all the above-mentioned gate bus lines 32 are turned on at the same time, if the data voltages (data signals) of all the source bus lines 34 are equalized, the liquid crystal display All the pixels 30 of the panel 5 are written with the same data voltage, and as a result, the voltages of the pixel electrodes 17 can be equalized over the entire surface of the liquid crystal display panel ...

Embodiment approach 3

[0178] Next, another third embodiment of the present invention will be described. In addition, the structure other than the description of this embodiment is the same as that of the above-mentioned embodiment. In addition, for the convenience of description, the same reference numerals are attached to the members having the same functions as those already shown in the drawings of the above-mentioned embodiment, and the description thereof will be omitted.

[0179] The liquid crystal display device 1 of this embodiment is different from the liquid crystal display device 1 of the above-mentioned embodiment in that it suppresses the potential difference between the pixel electrodes 17 sandwiching the gate bus line 32 during the line sequential driving, thereby suppressing A transverse electric field is generated.

[0180] (Auxiliary capacitor electrode applied signal waveform)

[0181] That is, in a so-called liquid crystal display device 1 using an active matrix substrate (mai...

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Abstract

Provided is a liquid-crystal display device driving method using an OCB mode (Optically Self-Compensated Birefringence mode). The liquid-crystal display device comprises an active matrix type liquid-crystal display panel (5). Each pixel (30) includes a TFT (36), which is a switching element, a pixel electrode (17) connected with the drain terminal of the TFT, a capacitive electrode disposed commonly for a plurality of pixels, and a liquid-crystal layer (50) interposed commonly between the pixel electrodes and the counter electrodes. During the period when at least a transition voltage for bend-orienting the liquid-crystal molecules (52) is being applied to the liquid-crystal layer (50), there is established a time period, for which all gate-bus lines (32) are simultaneously turned ON to apply a voltage of an identical polarity to the pixel electrodes (17) adjoining each other across the gate-bus lines (32) thereby to eliminate the potential difference between the two pixel electrodes (17) adjoining across the gate-bus line (32). No transverse electric field is generated between the adjoining pixel electrodes so that the bend orientation having occurred in one pixel easily spreads thereover to adjoining pixels. Thus, a splay-bend transition for the entire display face can be performed in a short time period.

Description

technical field [0001] The present invention relates to a driving method of a liquid crystal display device and a liquid crystal display device, in particular to a liquid crystal display panel and a liquid crystal display device using an OCB mode (Optically Self-Compensated Birefringence mode: optical self-compensating birefringence mode). Background technique [0002] The liquid crystal display device has advantages in that it is thinner and lighter than a CRT (Cathode Ray Tube: Cathode Ray Tube), can be driven at a low voltage, and consumes less power. Therefore, liquid crystal display devices are used in various electronic devices such as televisions, notebook PCs (Personal Computers), desktop PCs, PDAs (Personal Digital Assistants: portable terminals), and mobile phones. [0003] In addition, liquid crystal televisions and the like are rapidly gaining popularity for video display using a liquid crystal display panel, and it is increasingly necessary to perform good video...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/139G02F1/133G09G3/20G09G3/36
CPCG09G3/3648G09G2300/0491G02F1/1395G09G2310/063
Inventor 片山崇清水雅宏
Owner SHARP KK