公开(公告)号：US20020154258A1

公开(公告)日：2002-10-24

申请号：US10074756

申请日：2002-02-12

Applicant: NEC Corporation

Inventor： Fumihiko Fujishiro ,  Masatake Baba ,  Syuuki Yamamori

IPC: G02F001/1335

CPC classification number: H05B41/24 ,  H01J61/305 ,  H01J65/04 ,  H05B41/2806 ,  Y02B20/22

Abstract: A liquid crystal display device has a fluorescent lamp and a driving circuit as a back light. A closed container, a discharge gas sealed in the closed container, first discharge electrodes, and second discharge electrodes are included in the fluorescent lamp. The driving circuit repeats a first step of causing electric discharge in first discharge areas by applying a voltage having a negative polarity to the first discharge electrodes and a voltage having a positive polarity to the second discharge electrodes, and a second step of causing electric discharge in second discharge areas which are different from the first discharge areas by applying a voltage having a positive polarity to the first discharge electrodes and a voltage having a negative polarity to the second discharge electrodes.

Abstract translation: 液晶显示装置具有荧光灯和作为背光的驱动电路。 密闭容器，密封容器中的放电气体，第一放电电极和第二放电电极被包括在荧光灯中。 驱动电路重复通过向第一放电电极施加具有负极性的电压和对第二放电电极具有正极性的电压而在第一放电区域中进行放电的第一步骤，以及第二步骤， 通过向第一放电电极施加具有正极性的电压和与第二放电电极具有负极性的电压而不同于第一放电区域的第二放电区域。

公开(公告)号：US20030063230A1

公开(公告)日：2003-04-03

申请号：US10314243

申请日：2002-12-09

Applicant: NEC CORPORATION

Inventor： Katsuhiro Kato ,  Masatake Baba ,  Michiaki Nishiyama ,  Fumihiko Fujishiro ,  Takakazu Yano ,  Toshihisa Ogawa ,  Tomoo Miwa ,  Yasuhiro Sato

IPC: G02F001/1333

CPC classification number: G06F1/1637 ,  G02F1/133308 ,  G02F2201/465 ,  G02F2202/28 ,  G06F1/1616

Abstract: The present invention provides a mounting structure for mounting a liquid crystal module to a cover of a mobile terminal. The mounting structure comprises: at least a pair of first and second engagement parts, wherein the first engagement part is provided on a side portion of the liquid crystal module, whilst the second engagement part is provided on a side portion of a structural member of the cover, so that the paired first and second engagement parts are engaged with each other only by fitting the liquid crystal module into the structural member of the cover.

公开(公告)号：US20020080433A1

公开(公告)日：2002-06-27

申请号：US10027014

申请日：2001-12-21

Applicant: NEC Corporation

Inventor： Masatake Baba

IPC: G03H001/30 ,  F21V007/04

CPC classification number: G02B6/0028 ,  G02B6/0038

Abstract: In a light unit that converts a false linear light into which a light from a point light source has been converted by a columnar light guide, into a planar light by a plate-shaped light guide, the point light source is arranged only at an end of the columnar light guide at which an angle between a longitudinal direction of the columnar light guide and ridge lines of recesses and projections forming a prism surface is obtuse. Thus, a positional relationship between the point light source and the ridge lines is set so that a main irradiation direction of band-shaped light emitted from the columnar light guide and which has been obtained by converting the light from the point light source to a false linear light is not substantially orthogonal to the ridge lines of the recesses and projections forming the prism surface of the plate-shaped light guide. Consequently, light obtained by totally reflecting this band-shaped light is unlikely to be viewed. Therefore, there is provided a liquid-crystal display having a light unit that eliminates a non-uniformity of luminance even if the angle between the direction in which pixels are arranged on a liquid-crystal panel in a matrix and the ridge lines of the recesses and projections constituting the prism formed on the surface of the plate-shaped light guide is set to have a predetermined value in order to prevent moirnull stripes.

Abstract translation: 在通过柱形光导将来自点光源的光转换成的假线状光的光单元通过板状光导转换为平面光时，点光源仅在一端 柱状光导的纵向方向与形成棱镜表面的凹凸的脊线之间的角度是钝的。 因此，点光源与脊线之间的位置关系被设定为使得从柱状光导发射的带状光的主照射方向被设置为通过将来自点光源的光转换为假 线状光基本上不垂直于形成板状光导的棱镜面的凹部和突起的脊线。 因此，不可能看到通过完全反射该带状光而获得的光。 因此，提供一种具有光单元的液晶显示器，即使在像素排列在矩阵中的液晶面板上的方向与凹部的棱线之间的角度也消除亮度的不均匀性 将形成在板状光导体的表面上的棱镜的凸起设定为具有预定值，以防止莫尔条纹。