11results about How to "Increase pixel density" patented technology

The application provides a preparation method of a mixed photoresist and a metal electrode, and relates to the technical field of light emission. The raw material of the mixed photoresist comprises a negative photoresist and a light-absorbing photoresist, and the volume ratio of the two is (2.5-3.5):1. The preparation method of the metal electrode comprises the following steps: using the negative photoresist to perform first coating on a surface with a set structure, so as to obtain a first photoresist layer; continuing to use the mixed photoresist to perform second coating, so as to obtain a second photoresist layer; exposing the double-layer photoresist layer, so as to obtain a double-layer photoresist layer with a set pattern; arranging a metal layer on the second photoresist layer with the set pattern; and stripping the double-layer photoresist layer under the metal layer, so as to obtain the metal electrode.

This application discloses an array substrate, a display panel, and a display device. The pixel circuit includes a driving module, a light-emitting control module, a threshold compensation module, and a reset module: the driving module has a first terminal electrically connected to a first signal line, which provides a first power supply voltage and a data voltage in a time-division multiplexing manner; the light-emitting control module has a first terminal electrically connected to a second terminal of the driving module, a second terminal connected to a first electrode of a light-emitting element, a control terminal electrically connected to a light-emitting control signal line, and a second electrode of the light-emitting element electrically connected to a second signal line; the reset module has a first terminal electrically connected to a reset signal line, a second terminal electrically connected to a second terminal of the light-emitting control module, and a first control terminal electrically connected to a first scan line; the threshold compensation module has a first terminal electrically connected to a second terminal of the light-emitting control module, a second terminal electrically connected to the control terminal of the driving module, and a first control terminal electrically connected to a second scan line. Embodiments of this application can improve the performance of display products.

The invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a first buffer layer, a first device layer and a second device layer, wherein the first device layer and the second device layer are arranged in the vertical direction of the first buffer layer; the first device layer comprises at least one first transistor structure, a first signal line layer and a connecting column, the first transistor structure comprises a first electrode layer and a second electrode layer, the first signal line layer, the second electrode layer and the connecting column are arranged on the same layer, and the first signal line layer is connected with the connecting column; the second device layer comprises at least one second transistor structure and a third signal line layer, the second transistor structure at least comprises a third electrode layer, the third electrode layer and the third signal line layer are arranged on the same layer, and the first device layer is provided with a through first via hole corresponding to the vertical direction of the connecting column. The third signal line layer is connected with the connecting columns through the first via holes. A transistor structure and a signal line of a circuit are arranged in a laminated mode, the wiring flexibility is improved, and meanwhile the manufacturing process is simplified.

The utility model relates to the technical field of LEDs, and discloses an LED display screen. The LED display screen comprises a substrate; the light source sequences are arranged on the substrate at intervals, each light source sequence comprises a plurality of LED light sources which are uniformly arranged at intervals, any three continuous LED light sources in the plurality of LED light sources of each light source sequence comprise a red LED light source, a blue LED light source and a green LED light source so as to form an RGB unit, any two adjacent light source sequences are arranged in a staggered manner, and the red LED light source, the blue LED light source and the green LED light source are arranged in a staggered manner. Any two adjacent first LED light sources and second LED light sources in any column are combined with one third LED light source in the other adjacent column to form a pixel unit. Compared with a conventional mode that only pixel units can be formed on a single row or a column, the LED display screen provided by the utility model has the advantages that the modes of forming the pixel units are richer, more pixels can be generated under the same area and arrangement density, and the picture quality of the LED display screen can be improved.

The invention discloses an array substrate and a preparation method thereof, and a display panel. The array substrate comprises a substrate; the first conductive layer comprises a first end electrode; the first spacing layer comprises a first opening arranged in a penetrating manner, and at least part of the first end electrode is exposed from the first opening; the second conductive layer comprises a second end electrode; the first active layer comprises a first active part, the first end electrode, the second end electrode and the first active part form a first transistor, the first active part is connected with the first end electrode through the first opening, and the first active part covers at least part of the second end electrode. According to the invention, the distribution area of the first transistors can be effectively reduced, more transistors can be arranged in a unit area, and the purpose of high pixel density can be conveniently realized.

This application relates to a sub-pixel structure, a display panel, a method for fabricating the display panel, and a display device. The sub-pixel structure includes a light-emitting structure, an electrode structure, and a first blocking structure. The light-emitting structure includes a first light-emitting portion, a second light-emitting portion, and a first connecting portion. The first light-emitting portion surrounds the second light-emitting portion, and the first and second light-emitting portions are spaced apart. The first connecting portion connects the first and second light-emitting portions. The electrode structure is located on one side of the light-emitting structure and includes a first electrode and a second electrode spaced apart. The first electrode is opposite to and connected to the first light-emitting portion, and the second electrode is opposite to and connected to the second light-emitting portion. The first blocking structure is located on the side of the light-emitting structure away from the electrode structure and is located in the region between the first and second light-emitting portions. This application can effectively improve pixel density.

This invention provides a pixel structure and its display driving method, comprising, from bottom to top: a first metal layer, a first transparent conductive dielectric layer, a first phase change material layer, a second transparent conductive dielectric layer, a second phase change material layer, a third transparent conductive dielectric layer, a second metal layer, and a fourth transparent conductive dielectric layer; the thickness of the first metal layer is within a first preset thickness range, constituting a total reflection layer; the thickness of the second metal layer is within a second preset thickness range, constituting a semi-transparent reflective layer; the other layers serve as dielectric materials, forming a Fabry-Perot resonant cavity with the first and second metal layers; when the physical thickness of the resonant cavity is within a third preset thickness, the pixel structure can selectively reflect different colors of light when the crystal state of either the first or second phase change material layer changes. This invention achieves in-situ switching of multiple reflected colors on a single display pixel, featuring high pixel density and effectively improving the image resolution of reflective display devices.

This invention discloses a vertically stacked uLED pixel structure, a monolithically integrated full-color uLED microdisplay chip suitable for flip-chip packaging, and its fabrication method. By vertically stacking blue, green, and red light-emitting units, full-color display is achieved through monolithic integration. The blue, green, and red light-emitting units share the same light-emitting surface, reducing the planar area occupied by the pixel units and improving display resolution. Simultaneously, shallow trenches filled with insulating dielectric are used to isolate adjacent pixel structures, further reducing pixel spacing and increasing pixel density. By placing the insulating dielectric layer on the surface of the red light-emitting unit, metal interconnect rewiring is implemented within the insulating dielectric layer, and the interconnects are led out from the insulating dielectric layer through lead-out structures electrically connected to the metal interconnects. This avoids the use of through-silicon vias (TSVs), simplifying the fabrication process, streamlining the pixel wiring structure, and optimizing the circuit layout.

The application discloses a high-density Micro-LED display bonding method with adjustable resolution and without alignment, and relates to the field of photoelectric display, comprising the following steps: first, a first metal array containing first metal bumps is prepared on each driving pixel of a CMOS driving backboard, and a second metal array containing second metal bumps is prepared on a Micro-LED epitaxial wafer; then, based on the non-alignment type, the Micro-LED epitaxial wafer provided with the second metal array is bonded with the CMOS driving backboard provided with the first metal array; then, after bonding, the substrate of the Micro-LED epitaxial wafer is peeled off to expose a Micro-LED display layer; finally, according to the required resolution, photolithography etching is performed on the peeled-off Micro-LED display layer, and a Micro-LED display pixel unit is divided; the Micro-LED display pixel unit corresponds to M driving units in the corresponding area of the CMOS driving backboard, and a Micro-LED display array with corresponding resolution is formed. The application has low cost, greatly reduces the bonding alignment difficulty between metal bumps, and improves the picture quality and production efficiency of the Micro-LED display.

Embodiments of the present application disclose a display panel and a display device, the display panel comprising a first region, a second region and an opening, the opening being filled with a light shielding material. The opening between the first sub-region and the first region is a first opening, the first opening extending along a first direction, the width of the first opening in a direction perpendicular to the first direction being D1, and the depth of the first opening in a thickness direction of the display panel being H1. The opening located in the second sub-region is a second opening, the second opening extending along a second direction, the width of the second opening in a direction perpendicular to the second direction being D2, and the depth of the second opening in the thickness direction of the display panel being H2, wherein D1>D2, and / or H1>H2. The first opening and the second opening filled with the light shielding material respectively block the influence of light between the first sub-region and the first region and between the second sub-region and the first sub-region, thereby improving the display effect, and by setting D1>D2 and / or H1>H2, the transmittance of the display panel is improved.

This application relates to a display panel, a method for fabricating the display panel, and a display device. The display panel includes an array substrate, a first electrode layer, a light-emitting functional layer, and a second electrode layer. The array substrate includes a first conductor portion and a second conductor portion that are insulated from each other. The first electrode layer includes a first electrode connected to the first conductor portion. The light-emitting functional layer includes a light-emitting structure, which includes a first light-emitting portion, a switching electrode, and a second light-emitting portion sequentially stacked along a thickness direction away from the array substrate. The second electrode layer includes a second electrode. The switching electrode is connected to the second conductor portion, and the first electrode, the switching electrode, and the second electrode are insulated from each other. The display panel, the method for fabricating the display panel, and the display device provided in the embodiments of this application have good display effects.