Abstract:
A liquid crystal display has excellent viewing angle characteristics and prevents any reduction of transmittance. A liquid crystal panel has a pair of substrates SUB1, SUB2 sandwiching a liquid crystal layer LC, at least one of the substrates having electrodes DTM for selecting pixels, polarizing plates POL1, POL2 disposed on both sides of the liquid crystal panel to control the transmitted light depending on the state of orientation of liquid crystal molecules by applying a voltage to the electrodes, illumination means BL for illuminating the liquid crystal panel, a driving circuit for applying a voltage in accordance with a display image to the electrodes, and birefringent sheet PDS formed on the outer surface of one of the pair of substrates SUB1 and SUB2 such that the direction of the maximum contrast or luminance becomes the vertical direction and such that viewing angle characteristics become symmetric in the horizontal direction, wherein the liquid crystal layer LC is oriented such that the transmittances of the liquid crystal panel in use in the vertical direction and horizontal direction have asymmetric viewing angle dependence and such that the direction of the maximum contrast or luminance is a direction different from either of the vertical and horizontal directions.
Abstract:
The invention relates to a device for generating electromagnetic radiation, comprising a pump light source (1), which emits a substantially monochromatic excitation radiation (5) at a first wavelength, and an optical waveguide (2), which generates frequency-converted radiation (6, 7) at a second and a third wavelength from the excitation radiation (5) of the pump light source (1) by means of degenerate four-wave mixing. The problem of the invention is producing a device which ensures an improved pulse shape and conversion efficiency. According to the invention a filter element (3) is provided, which attenuates the radiation (6, 7) at the second or third wavelength.
Abstract:
The invention relates to a liquid crystal control or display device that contains a chiral smectic liquid crystal mixture. The ratio DELTA / THETA of the angle between the rubbing direction and the smectic layer normal to the tilt angle is at least 0.41. The liquid crystal mixture preferably has the phase sequence I-N-C and the tilt angle THETA at 25 DEG C ranges from 19 DEG to 39 DEG .
Abstract:
The invention relates to an active matrix display having an asymmetrically structured cell containing a monostable liquid crystal domain, wherein the chiral smectic liquid crystal mixture has phase sequence I-N*-SmC*, a spontaneous polarization in the range of a working temperature of and a pitch of >20 mu m in at least one temperature in the nematic phase, the divergence of the monostable position with respect to the direction of friction in the range of the working temperature of the display being less than 10 degrees. The liquid crystal mixture comprises at least one compound of substance classes (A) and (B): R -(-A -M )a(-A -M )b-(M -A )c-(M -A )d-R and contains in relation to the liquid crystal mixture 0.05 to 50 percent by weight of one or more compounds of substance class (C): R -M -(-A -M )a(-A -M )b-(M -A )c-(M -A )d-M -R , wherein R , R represent alkyl; X represents -O-; Y represents -O-; Z represents -OC(=O)-; (a) represents phenylene-1,4-diyl; (b) represents phenylene-1,4-diyl; (c) represents cyclohexane-1,4-diyl; R , R represent hydrogen; R , R represent hydrogen; A , A , A , A represent 1,4-phenylene; M , M , M , M represent a simple bond; M , M represent -OC(=O)- and a, b, c and d 0 or 1 with the proviso that 1 -M -) is a simple bond when exponent x is zero.
Abstract translation:的有源矩阵显示器具有不对称构造的细胞含有一个单稳态液晶畴,其中,所述手性近晶型液晶混合物中,相序IN * -SmC *,在工作温度范围内<40 NC /厘米<2>,和至少一个温度的自发极化 向列相具有> 20微米的间距,并从在所述显示器的工作温度的摩擦方向的单稳态位置的偏差量为小于10度,并且其中所述液晶组合物(至少1%的物质种类的化合物(a)和 乙):R <12> - ( - A <14> -M <14>)一个(-A <15> -M <15>)B-(M <16> -A <16>)C-(M <17> -A <17>)的dR <13>,和,基于所述液晶组成物为0.05〜50重量物质类的(C)一种或多种化合物的%:R t <20> -M <18> - (-A <14> -M <14>)一个(-A <15> -M <15>)B-(M <16> -A <16>)C(M <17> -A <17> )DM含有<19> -R <21>,其中,对于为R <5> - [R <6>:烷基; X <3>:-O-; ÿ<4>:-O-; ž<1>:OC(= O) - ; (A):亚苯基-1,4-二基; (B)亚苯基-1,4-二基; (C):环己烷-1,4-二基; [R <12>,R <13>:氢; [R <20>,R <21>:氢; A <14>,A <15>,A <16>,A <17>:1,4-亚苯基; 中号<14>中,M <15>中,M <16>中,M <17>:单键; 中号<18>中,M <19>:OC(= O) - ; A,B,C,D:0或1,条件1 = {A + B + C + D} = 3,和理解,即(-A -M - ) 单键,当索引x是零。
Abstract:
본 발명은 액정표시장치에 관한 것으로, 특히 시각변화에 의한 콘트라스트비, 투과광의 휘도 및 색조의 변화가 적은 시각 특성이 우수한 액정표시장치에 관한 것이다. 본 발명은 액정층(LC)를 사이에 두고 배치된 한쌍의 기판(SUB1, SUB2)을 포함하고, 상기 한 쌍의 기판 중 적어도 한쪽이 화소선택용 전극(DTM)을 구비한 액정패널과, 상기 전극에 전압을 가함으로써 액정분자의 배향상태에 따라 투과광을 제어하도록 액정패널의 양면에 배치된 편광판(POL1, POL2)와, 상기 액정패널을 조명하는 조명광원(BL)과, 상기 전극에 표시신호에 따라 전압을 공급하는 구동회로와, 콘트라스트 또는 휘도가 최대인 방향이 상하방향이 되고, 시각특성이 좌우방향으로 대칭이 되도록 상기 한쌍의 기판(SUB1, SBU2)의 한쪽 외면에 형성된 복굴절매체시트(PDS)를 구비하고, 상기 액정층(LC)는 사용상태에서 상하방향 및 좌우방향으로 액정패널의 투과율이 비대칭적인 시각의존성을 갖고, 콘트라스트 또는 휘도가 최대인 방향이 상하방향 및 좌우방향 중 어느 방향과도 다른 방향이 되도록 배향처리함으로써, 투과율의 저하를 억제함과 동시에 시각특성이 뛰어난 액정표시장치를 제시하고 있다.
Abstract:
PROBLEM TO BE SOLVED: To reduce the change of a contact area of a tip part of a columnar spacer on a first substrate even though the first substrate and a second substrate are displaced in attachment in a liquid crystal display device in which liquid crystal is sealed in a space between substrates or an organic EL display device or other display devices having space between substrates.SOLUTION: A display device includes a first substrate and a second substrate. The second substrate has a plurality of columnar spacers. The first substrate has a convex part in a region facing a tip part of the columnar spacer. The first substrate has a scan line, and the columnar spacers formed on the second substrate are not disposed at equal intervals in an extension direction of the scan line and/or not disposed on a straight line and are disposed randomly.