A transmissive micro display board is manufactured without providing a light shielding layer. A manufacturing method of a micro display board includes the steps of: (i) forming a circuit layer on a surface of a first substrate provided with a single-crystal silicon layer; (ii) attaching a second substrate by using an adhesive to the surface of the first substrate on which the circuit layer has been formed; (iii) thinning a rear surface of the first substrate; (iv) attaching a third substrate being a transparent substrate to the thinned surface of the first substrate by using an adhesive; (v) removing the second substrate from the first substrate; and (vi) exposing a surface of the circuit layer by removing the adhesive on the surface of the first substrate after detaching the second substrate. The step (i) includes the steps of forming an active layer, a gate layer, and a wiring layer in turn, and the wiring layer is provided to satisfy such a positional relation that the wiring layer shields the active layer and the gate layer from incident light.

An initial change and a secular change in an optical characteristic and a high frequency characteristic in a case where an optical modulator is mounted in a package of an optical transmission apparatus are suppressed while improving a space utilization rate in the package of the optical transmission apparatus. An optical modulator that is electrically connected to an electric circuit configured on a circuit board, includes a package that houses an optical modulation element, in which the package has, on a bottom surface facing the circuit board, a plurality of first protruding bodies protruding from the bottom surface.

A head up display system is provided and includes an image source, an image adjustment device, a controller, and a reflector. The image source is adapted to output an image with an image light traveling in a light path. The image adjustment device is positioned on the light path of the image light, wherein the image adjustment device comprises a liquid crystal panel. The controller is adapted to control the image adjustment device. The reflector is adapted to reflect the image light passing through the image adjustment device to a projection screen. A display method of a head up display system is also provided in the disclosure.

A display device including a first substrate, a pixel disposed on the first substrate and including first, second and third sub-pixel electrodes adjacent to each other, a second substrate spaced from the first substrate, a color conversion layer disposed on the second substrate and with a first wavelength conversion layer overlapping with the first sub pixel electrode and a second wavelength conversion layer overlapping with the second sub pixel electrode, a transmissive layer including a first sub-transmissive layer overlapping with the third sub-pixel electrode and a second sub-transmissive layer disposed between the first wavelength conversion layer and the second wavelength conversion layer, and a planarization layer disposed on the color conversion layer and the transmissive layer. A method of manufacturing a display device having a flatter planarization layer with reduced variations in thickness is also disclosed.

A display device including a first substrate, a pixel disposed on the first substrate and including first, second and third sub-pixel electrodes adjacent to each other, a second substrate spaced from the first substrate, a color conversion layer disposed on the second substrate and with a first wavelength conversion layer overlapping with the first sub pixel electrode and a second wavelength conversion layer overlapping with the second sub pixel electrode, a transmissive layer including a first sub-transmissive layer overlapping with the third sub-pixel electrode and a second sub-transmissive layer disposed between the first wavelength conversion layer and the second wavelength conversion layer, and a planarization layer disposed on the color conversion layer and the transmissive layer. Methods of manufacturing display devices having a flatter, planarization layer with reduced variations in thickness also is disclosed.

There is provided a holographic projector comprising a hologram engine and a controller. The hologram engine is arranged to provide a hologram comprising a plurality of hologram pixels. Each hologram pixel has a respective hologram pixel value. The controller is arranged to selectively-drive a plurality of light-modulating pixels so as to display the hologram. Displaying the hologram comprises displaying each hologram pixel value on a contiguous group of light-modulating pixels of the plurality of light-modulating pixels such that there is a one-to-many pixel correlation between the hologram and the plurality of light-modulating pixels.

In various embodiments, a light-emitting diode arrangement is provided. The light-emitting diode arrangement includes a first substrate with a first light-emitting diode which is arranged on the first substrate such that light emitted by it radiates in a main emission direction of the light-emitting diode arrangement, and a second substrate with a second light-emitting diode which is arranged on the second substrate such that light emitted by it radiates in the main emission direction of the light-emitting diode arrangement. The second substrate is arranged above the first substrate, such that the second substrate at least partly covers the first substrate.

A spatial phase modulator and a method for producing a spatial phase modulator are provided. The spatial phase modulator includes a first substrate and a second substrate that are meshed together, and a liquid crystal layer disposed between the two substrates, where a transparent electrode layer and a first alignment and guiding layer are disposed in a cascading manner on a side that is of the first substrate and that faces the liquid crystal layer; and an electrode layer and an insulation medium glass layer are disposed in a cascading manner on a side that is of the second substrate and that faces the liquid crystal layer, where the insulation medium glass layer has an inclined serration structure on a side facing the liquid crystal layer.

A head up display system is provided and includes an image source, an image adjustment device, a controller, and a reflector. The image source is adapted to output an image with an image light traveling in a light path. The image adjustment device is positioned on the light path of the image light, wherein the image adjustment device comprises a liquid crystal panel. The controller is adapted to control the image adjustment device. The reflector is adapted to reflect the image light passing through the image adjustment device to a projection screen. A display method of a head up display system is also provided in the disclosure.

In an electro-optical device, a temperature detection element is provided on a first substrate having a pixel region, on which a plurality of pixel electrodes are provided, in a position overlapping a light shielding portion that is formed on a second substrate so as to surround the pixel region. Further, the first substrate is provided with an electrostatic protection circuit that includes a semiconductor element and is electrically coupled to the temperature detection element. The semiconductor element is disposed in a position which is farther distanced from the center of the pixel region than the temperature detection element is, and at which a temperature is lower than a temperature at a position in which the temperature detection element is provided.