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Liquid crystal display panel and method of manufacturing the same

A liquid crystal display panel, liquid crystal material technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of uneven gap, light leakage, contrast reduction, etc., to increase the variation margin, no light leakage, high reliability. Effect

Inactive Publication Date: 2007-10-10
NEC LCD TECH CORP
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Problems solved by technology

In recent years, continuous progress in narrowing the gap has led to the following problems: non-uniformity of the gap due to volume change of the liquid crystal material when the cylindrical spacer is subjected to temperature change; and / or deformation due to stress , the unevenness of the display appears
This leads to problems with light leakage, uneven gaps, and reduced contrast
In addition, although Japanese Laid-Open Patent No. 2004-21199 discloses that the accuracy of the printing position is enhanced by changing the contact angle, the surface condition becomes unstable due to the shape of the pattern, and thus, the use of this structure alone cannot make the spacing objects are precisely set
[0007] In addition, even when there is no problem in the initial display condition, there are cases where the spacer moves to the outside of the light-shielding area due to vibration and / or shock occurring at the time of transportation.
This movement of the spacers also causes the problems of light leakage, uneven gaps, and reduced contrast as described above.

Method used

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  • Liquid crystal display panel and method of manufacturing the same

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[0054] First, an LCD panel and a method of manufacturing the LCD panel according to a first exemplary embodiment of the present invention will be described with reference to FIGS. 1, 2, 3A, and 3B.

[0055] The LCD device device of the present embodiment includes an LCD panel, a backlight unit that illuminates the LCD panel, and the like. As shown in Figures 1 and 2, an LCD panel mainly includes an active matrix substrate, an opposite substrate facing the active matrix substrate, an approximately spherical The spherical spacer, and the liquid crystal material 122 sandwiched in the cell gap defined by the spherical spacer. On an active matrix substrate, switching elements such as TFTs are formed in a matrix. In this embodiment, an example of an active matrix substrate is explained using the TFT substrate 120 . An example of a counter substrate is explained using a color filter (CF) substrate 121 . An example of an approximately spherical spherical spacer is explained using t...

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Abstract

In a liquid crystal display panel using spherical spacers, plural recessed parts are formed on at least one of inner surfaces of a pair of substrates. The recessed parts are located on light-shielding areas of the panel. In particular, plural kinds of spherical spacers having different diameters are disposed on the recessed parts, or plural kinds of recessed parts having different depths are formed on the inner surface of the substrates.

Description

technical field [0001] The present invention relates to a liquid crystal display panel and a method of manufacturing the same, and more particularly, to a liquid crystal display panel using spherical spacers and a method of manufacturing the same. Background technique [0002] A liquid crystal display (LCD) device has been widely used as a display device of an audio-visual (AV) device or an office automation (OA) device because of its advantages of being thin and light and having low power consumption. Such an LCD device includes a liquid crystal display panel (LCD panel) in which a liquid crystal material is sandwiched between an active matrix substrate and a counter substrate. The active matrix substrate is provided with switching elements such as thin film transistors (TFTs) formed thereon in a matrix. The opposite substrate is provided with color filters (CF) and black matrix (BM) formed thereon. The orientation direction of liquid crystal molecules is controlled by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1339G02F1/1333
CPCG02F1/13394G02F2001/13396G02F1/13396
Inventor 桥本宜明
Owner NEC LCD TECH CORP
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