An optical system includes a pancake lens assembly and a varifocal lens device. The varifocal lens device is coupled to the pancake lens assembly in a way that an optical axis of the varifocal lens device is in alignment with an optical axis of the pancake lens assembly, thereby permitting the optical system to have an adjustable focal length.

A display device is provided. The display device includes a substrate and a plurality of pixels disposed on the substrate. One of the pixels includes a first light filter layer. The display device also includes a first light shielding layer, a second light shielding layer, and a plurality of light emitting diodes. The first light shielding layer defines a plurality of openings, wherein the first light filter layer is disposed in one of the openings. The second light shielding layer is disposed on the substrate and at least partially overlapped with the first light shielding layer. The second light shielding layer defines another plurality of openings, and the light emitting diodes are disposed in the another plurality of openings. In a direction parallel to an upper surface of the substrate, the second light shielding layer overlaps the plurality of light emitting diodes.

A reflective-type display screen and a control method thereof, and a display device are provided. The reflective-type display screen comprises, a display panel, a compensation light source, a detector module and a processor module. The display panel comprises a reflection surface, the display panel is configured to reflect light by the reflection surface to realize display; the compensation light source is in the display panel; the detector module is on a light-outputting side of the display panel and is configured to acquire an intensity of ambient light outside the display screen; and the processor module is respectively connected with the detector module and the compensation light source and is configured to control operation of the compensation light source based on the intensity of the ambient light acquired by the detector module.

A liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a plurality of pixels. Each of the pixels has a reflection region for performing display in a reflective mode. The first substrate includes a pixel electrode provided in each of the pixels and a reflection layer positioned opposite to the liquid crystal layer with respect to the pixel electrode. The reflection layer has a first region positioned in each of the pixels and a second region positioned between any two pixels adjacent to each other. Voltages of an identical polarity are applied to the liquid crystal layer for any two pixels adjacent to each other in a row direction, for any two pixels adjacent to each other in a column direction, or for all the pixels.

A high laser damage threshold reflective optically addressed liquid crystal spatial light modulator for shaping 1053 nm linearly polarized light beams, comprising a computer-controlled LCoS electrical addressable spatial light modulator, polarization beam splitter, and polarizer, Liquid crystal cell, analyzer, AC power supply, where the liquid crystal cell comprises a transparent conductive film antireflection film layer, a transparent conductive film base layer, a first transparent conductive layer, a liquid crystal alignment layer, a liquid crystal layer, an alignment element, a reflective film layer, a light guide layer, and a second transparent conductive layer. By changing the transparent conductive layer material of the light-transmitting part of the liquid crystal cell from ITO to gallium nitride material, the damage threshold of the high-energy laser is improved, which facilitates application of beam shaping in high-power laser devices.

Various embodiments of the present invention relate to an electronic device including a liquid crystal, the electronic device including: a piece of glass; a display disposed under a first region of the piece of glass; a power supplying module; one or more electrode films; and one or more liquid crystal layers disposed between the one or more electrode films. The electronic device may also include: a light reflection member (e.g., cholesteric liquid crystal) disposed under a second region of the piece of glass; a processor operatively connected to the display, the power supplying module, and the light reflection member; and a memory operatively connected to the processor. The processor can check the content to be displayed through the display, and can use the power supplying module to supply power to the light reflection member on the basis of at least the checked content, so that the one or more liquid crystal layers reflects at least a portion of light incident from the outside of the electronic device. In addition, other embodiments are possible.

A light source includes a semiconductor element with a substrate, a translucent sealing resin that covers the semiconductor element, and a reflective layer that is disposed on an upper face of the sealing resin.

A functional module is applied in a front light module of a display device. The functional module includes a composite cover structure having a first plate and a second plate and a reflective display panel. The second plate is located between the first plate and the reflective display panel. At least one medium layer is located between the first plate of the composite cover structure and the reflective display panel. The refractive index of the medium layer is greater than or equal to 1 and is smaller than 1.474.

An array substrate includes a base, a plurality of thin film transistors, a passivation layer, at least one reflective electrode, and at least one first connecting electrode. The array substrate has a display area. The thin film transistors are disposed in the display area on the base. The passivation layer covers the thin film transistors, and has at least one first via hole in the display area. The reflective electrode is disposed on a surface of the passivation layer facing away from the base, and is disposed in the display area and uncovers the first via hole. The first connecting electrode is disposed on a side of the reflective electrode away from the base. Each first connecting electrode is connected to a corresponding reflective electrode, and is connected to a source or a drain of a corresponding thin film transistor through a corresponding first via hole.

The present disclosure discloses a display panel, a method for manufacturing a display panel, and a display device, and belongs to the field of liquid crystal display technologies. The display panel includes an array substrate, a counter substrate, and a liquid crystal layer between the array substrate and the counter substrate. For the array substrate, a diffuse reflection layer is sequentially laminated on the array substrate. The array substrate includes a first base substrate, and a thin film transistor array, a diffuse reflection layer, and a first planarization layer that are laminated on the first base substrate. A surface of the diffuse reflection layer proximal to the first planarization layer is a reflection surface that has a plurality of protrusion structures, the protrusion structures are configured to diffusely reflect light irradiated on the reflection surface. Based on this structure, the first planarization layer may separate the protrusion structure from the liquid crystal layer to prevent the protrusion structure from affecting the driving effect of the liquid crystal layer. In this way, the problem in the related art regarding the poor display effect of the display panel is solved and thus the display effect of the display panel is improved.