PROBLEM TO BE SOLVED: To improve evenness in brightness of a liquid display device.SOLUTION: A liquid display device 70 comprises: a liquid display panel 71; a pointer illuminating light source 50 that functions as a light source; an illumination light division output unit 60 that guides light output from the pointer illuminating light source 50 toward the back side of the liquid display panel 71; a diffuser panel 72 that is located between the illumination light division output unit 60 and the liquid display panel 71, provided over the whole back of the liquid display panel 71, and diffuses light incident from the illumination light division output unit 60 to cast the light to the liquid display panel 71; a reflection member 77 that is formed at an area that is located on a back surface 72a of the diffuser panel 72 facing the illumination light division output unit 60 and includes a position that the optical axis X of the light incident from the illumination light division output unit 60 crosses, and reflects light toward the illumination light division output unit 60; and a curved surface 75 of an LCD case 73 that reflects the light reflected by the reflection member 77 toward the diffuser panel 72.
【課題】液晶表示装置の輝度の均一性を向上させる。【解決手段】液晶表示装置70は、液晶パネル71と、光源としての指針照明用光源50と、指針照明用光源50から出力された光を液晶パネル71の背面側に導く照明光分割出力部60と、照明光分割出力部60と液晶パネル71との間に配置され、液晶パネル71の背面の全域に沿って延在し、照明光分割出力部60から入射された光を拡散して液晶パネル71に照射する拡散板72と、拡散板72の照明光分割出力部60側の背面72aにおいて、照明光分割出力部60から入射される光の光軸Xが交差する位置を含む領域に設けられ、光を照明光分割出力部60側に反射する反射材77と、反射材77により反射された光を拡散板72側に反射するLCDケース73の湾曲面75と、を備える。【選択図】図7
LIQUID DISPLAY DEVICE AND VEHICLE INSTRUMENT
液晶表示装置及び車両用計器
2015-12-07
Patent
Elektronische Ressource
Japanisch
IPC: | G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
Liquid crystal display device and vehicle measuring instrument
Europäisches Patentamt | 2018
|LIQUID CRYSTAL DISPLAY DEVICE AND VEHICLE MEASURING INSTRUMENT
Europäisches Patentamt | 2015
|Flexible liquid crystal display vehicle instrument panels
Kraftfahrwesen | 1988
|Europäisches Patentamt | 2023
|Vehicle instrument display method and device, display equipment and vehicle
Europäisches Patentamt | 2024
|