Patent application number | Description | Published |
20100208355 | OPTICAL SHEET, IMAGE SOURCE UNIT, DISPLAY DEVICE, PROCESS FOR PRODUCING OPTICAL SHEET, AND METHOD FOR MANUFACTURING DISPLAY DEVICE - An optical sheet is disposed on an observer side relative to an image source and includes a plurality of layers that control light emitted from the image source to emit the light on the observer side. At least one of the plurality of layers is a base material layer. One layer disposed on one side of the base material layer is an optical functional sheet layer which includes prisms arranged in parallel along the sheet surface of the optical sheet whereby light can be transmitted and light-absorbing parts are arranged in parallel between the prisms whereby light can be absorbed. One layer disposed on the other side of the base material layer is an adhesive layer. An adhesive layer is not provided on a side surface of the optical functional sheet layer facing the side disposed with the base material layer. | 08-19-2010 |
20100328777 | OPTICAL SHEET, DISPLAY DEVICE, AND METHOD FOR PRODUCING OPTICAL SHEET - An optical sheet, which can suitably absorb external light over a wide range and can improve a contrast, a display device, and a method for producing an optical sheet. The optical sheet is disposed on an observer side relative to an image light source and includes: a plurality of layers that control light emitted from the image light source to emit the light on the observer side, wherein at least one of the plurality of layers is an optical functional sheet layer which includes prisms being arranged in parallel along the surface of the optical sheet whereby light can be transmitted and wedge portions are arranged in parallel between the prisms whereby light can be absorbed. At least one of the plurality of layers other than the optical functional sheet layer is a light-absorbing layer. | 12-30-2010 |
20110043542 | DISPLAY DEVICE - The present invention provides a display device which can attain higher contrast than that of the conventional display device. The display device ( | 02-24-2011 |
20110043921 | METHOD FOR PRODUCING OPTICAL SHEET, OPTICAL SHEET AND VIDEO DISPLAY DEVICE - The present invention provides a method for manufacturing optical sheet having an improved appearance, optical sheet, and an image display device having the optical sheet. The method for manufacturing optical sheet having a plurality of layers in which at least one layer is an optical functional sheet layer comprises: light-transmissive portions configured to be arranged in a row along the surface of a base material layer; and light-absorbing portions arranged between the light-transmissive portions, the method comprising the steps of: forming the light-transmissive portions on one side of the base material layer; and forming the light-absorbing portions repeatedly by filling a binder made of a resin in which light-absorbing particles are dispersed in the gaps between the light-transmissive portions and curing the binder, wherein at least the last step of the repeating step for forming the light-absorbing portions is carried out so that the density of the light-absorbing particles contained in the binder is lower than the density of the same at the first step for forming the light-absorbing portion. The optical sheet is produced by the method; and the image display device is provided with the optical sheet. | 02-24-2011 |
20110110094 | IMAGE SOURCE UNIT AND IMAGE DISPLAY UNIT - The present invention is to provide an image source unit for improving use efficiency of the image light and also provide an image display unit comprising the image source unit. | 05-12-2011 |
20110146904 | OPTICAL SHEET, IMAGE SOURCE UNIT, DISPLAY DEVICE, PROCESS FOR PRODUCING OPTICAL SHEET, AND METHOD FOR MANUFACTURING DISPLAY DEVICE - There is provided: an optical sheet, which has excellent productivity while maintaining an optical performance and can reduce a manufacturing cost; an image source unit; a display device; a method for producing an optical sheet; and a method for manufacturing a display device. | 06-23-2011 |
20110164205 | IMAGE SOURCE UNIT AND DISPLAY DEVICE INCLUDING THE SAME - An image source unit that can efficiently provide image light emitted from an image source to an observer is disclosed. The image source unit includes an image source; and an optical sheet that disposed closer to an observer side than the image source. The optical sheet includes an optical functional layer that includes a light-transmitting portion having a trapezoidal cross section; and the low refractive-index portion having a wedge shape cross section. An oblique side of the wedge shape cross section of the low refractive-index portion form an angle of θ | 07-07-2011 |
20110170194 | OPTICAL SHEET AND DISPLAY DEVICE INCLUDING THE SAME - An optical sheet and a display device including the optical sheet are disclosed. The optical sheet includes a plurality of layers disposed on an observer side relative to an image source and capable of controlling light from the image source and transmitting the light to the observer side. At least one layer of the plurality of layers is an optical functional layer which includes: light transmissive portions having a trapezoidal cross section and arranged in parallel along a sheet face to be capable of transmitting the light; and light absorbing portions having a wedge-shaped cross section and arranged in parallel between the light transmissive portions to be capable of absorbing the light. The front transmittance x and the diffuse reflectance y of the optical functional layer satisfy a predetermined relationship. | 07-14-2011 |
20150055235 | OPTICAL SHEET CONTROLLING EXTERNAL LIGHT, DISPLAY DEVICE AND METHOD FOR PRODUCING OPTICAL SHEET - An optical sheet, which can suitably absorb external light over a wide range and can improve a contrast, a display device, and a method for producing an optical sheet. The optical sheet is disposed on an observer side relative to an image light source and includes a plurality of layers that control light emitted from the image light source to emit the light on the observer side, at least one of the plurality of layers is an optical functional sheet layer which includes prisms being arranged in parallel along the surface of the optical sheet whereby light can be transmitted and wedge portions are being arranged in parallel between the prisms whereby light can be absorbed. At least one of the plurality of layers other than the optical functional sheet layer is a light-absorbing layer. | 02-26-2015 |