PROBLEM TO BE SOLVED: To provide a liquid crystal display device which minimizes degradation of display performance and reduction in contrast due to external light.SOLUTION: A liquid crystal display device 11 is positioned such that a line normal to a display surface thereof is tilted by a tilt angle relative to a light path of external light, and includes a substrate 20 located to face a light source unit, a substrate 21 located to face the substrate 20, a liquid crystal layer 22 sandwiched between the substrates 20, 21, a triangular prism 40 located on the substrate 20, and a triangular prism 41 located on the substrate 21. The prism 40 deflects light from the light source unit such that the light passing through the liquid crystal layer 22 is substantially normal to the display surface. The prism 41 deflects the light coming out through the liquid crystal layer 22 such that the light coming out through the liquid crystal layer 22 is tilted by a tilt angle relative to the display surface.
【課題】外光に起因して表示特性が劣化するのを抑制するとともに、コントラストが低下するのを抑制する液晶表示装置を提供する。【解決手段】外光の光路に対して表示面の垂線がチルト角だけ傾いて配置された液晶表示装置11であって、光源部に対向配置された基板20と、基板20に対向配置された基板21と、基板20、21間に挟まれた液晶層22と、基板20に設けられ、三角柱からなるプリズム40と、基板21に設けられ、三角柱からなるプリズム41とを含む。プリズム40は、液晶層22を透過する光が表示面に対してほぼ垂直になるように、光源部からの光を屈折させる。プリズム41は、液晶層22を透過した光が表示面に対してチルト角だけ傾くように、液晶層22を透過した光を屈折させる。【選択図】図7
LIQUID CRYSTAL DISPLAY DEVICE AND HEAD-UP DISPLAY DEVICE
液晶表示装置及びヘッドアップディスプレイ装置
2015-06-25
Patent
Electronic Resource
Japanese
IPC: | G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G09F DISPLAYING , Anzeigewesen |
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