DISPLAY DEVICE

• Main Authors: OKI YOJI, SHIGENO NOBUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 17.03.2023
• Subjects: ADVERTISING; BLASTING; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; HEATING; LABELS OR NAME-PLATES; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To enable image display at a narrow viewing angle and prevent it from being peeped.SOLUTION: A display device 1 comprises a display panel 3 and an infrared cut filter 4 provided on the display surface of the display panel 3. The infrared cut filter 4 includes transmission characteristics of transmitting a visible light region when a visual recognition position is in a normal direction of the display surface of the display panel 3, and includes reflection characteristics that an edge of a reflection band is shifted into the visible light region as the visual recognition position is inclined from the normal direction of the display surface of the display panel 3.SELECTED DRAWING: Figure 1 【課題】狭い視野角での画像表示を可能とし、覗き込みを防止する。【解決手段】表示装置１は、表示パネル３と、表示パネル３の表示面に設けられた赤外線カットフィルタ４と、を備える。赤外線カットフィルタ４は、視認位置が表示パネル３の表示面の法線方向にあるとき、可視光領域を透過する透過特性を備え、視認位置が表示パネル３の表示面の法線方向から傾斜するにつれて、反射帯域のエッジが可視光領域内にシフトする反射特性を備える。【選択図】図１