193 results about "Quantum dot display" patented technology

A system and method are disclosed that determines the location of an object touching a display screen. The system and method modifies already existing display technology, including using the underlying structure of many types of existing displays as the touch detecting structure. The systems and methods are applicable to virtually all LCD and LCD-like displays, including emissive displays (OLED, PLED, quantum dot displays, etc.), electronic paper, and others.

Disclosed are a light emitting diode unit, a display apparatus having the same, and a method of manufacturing the same. The light emitting diode unit includes at least one light emitting diode, a quantum dot layer, and a buffer layer. The light emitting diode emits first light. The quantum dot layer is provided on the light emitting diode and includes a plurality of quantum dots that absorb the first light to emit second light having a wavelength different from a wavelength of the first light. The buffer layer is interposed between the light emitting diode and the quantum dot layer and separates the light emitting diode from the quantum dot layer. The buffer layer includes a scattering agent which is dispersed in resin to diffuse the light emitted from the light emitting diode.

Light-emitting quantum dot films, quantum dot lighting devices, and quantum dot-based backlight units are provided. Related compositions, components, and methods are also described. Improved quantum dot encapsulation and matrix materials are provided. Quantum dot films with protective barriers are described. High-efficiency, high brightness, and high-color purity quantum dot-based lighting devices are also included, as well as methods for improving efficiency and optical characteristics in quantum dot-based lighting devices.

The present invention relates to a display apparatus, which has a quantum dot layer. The quantum dot layer has a plurality of quantum dot blocks which comprise quantum dots and are arranged in a matrix. The quantum dots when excited by the light convert the light wavelength so as to determine the color of each pixel of an image. As a result, the color filter of prior art can be omitted. Compared with the luminescent efficiency of the display apparatus of prior art, the luminescent efficiency of the display apparatus of the present invention can be raised.

The invention relates to an organic light emitting display device and a manufacture method thereof. The method includes providing an LTPS substrate; forming an anode layer on the substrate; forming an organic light emitting layer on the anode layer and forming a cathode layer on the organic light emitting layer, wherein the organic light emitting layer is used for emitting blue light; forming a quantum dot layer including red sub pixels, green sub pixels and blank sub pixels on the cathode layer; and forming a packaging layer on the quantum dot layer. Through forming the quantum dot layer on the cathode layer directly, through exciting the red sub pixels and the green sub pixels of the quantum dot layer with the blue light emitted by the organic light emitting layer and through penetration of the blue light by the blank sub pixels, light of different colors is emitted. Color saturation and color gamut are improved effectively. Besides, cost is reduced effectively and production efficiency is improved.

The invention relates to an electronic paper display device. The electronic paper display device comprises an upper substrate with a first electrode layer formed thereon, a lower substrate with a second electrode layer formed thereon and an electronic ink layer arranged between the first electrode layer and the second electrode layer, microcapsules are distributed in the electronic ink layer, and at least one kind of quantum dots capable of displaying a kind of color are encapsulated in each microcapsule. Quantum dot display has various functions. If multiple excitation and light emission can be borne, long-lasting stability guarantees application effect. Besides, the biggest advantage of the quantum dots is rich color. Two-color display of electronic paper products within a broad color range can be realized through the quantum dots, and the electronic paper display device is purer in color and clearer and has higher practicality and generalizability.

The invention relates to the technical field of quantum dots, in particular to an optical plate based on quantum dots, which comprises a substrate and a quantum dot layer coated or sprayed on the upper surface or the side surface of the substrate, wherein the quantum dot layer comprises a first quantum dot zone capable of converting blue light into green light, a second quantum dot zone capable of converting blue light into red light, and a blue light zone, and no quantum dot covers the blue light zone; green light obtained through conversion of the first quantum dot zone and red light obtained through conversion of the second quantum dot zone are combined with blue light in the blue light zone to produce light of a specific wave band. The invention provides the optical plate based on the quantum dots, which can form light of the specific wave band, especially three-color white light, under the excitation of blue light. According to certain aspects, the optical plate based on the quantum dots can be used as a light guide plate, can convert blue light sent by a backlight source into red light and green light on the base of not changing original procedures so as to enable a liquid crystal display to display more brightly and colorfully.

The invention discloses a quantum dot display panel and manufacturing method thereof. The quantum dot display panel includes a substrate, a pixel electrode located in a substrate pixel electrode pattern region, a pixel bank layer in a peripheral region of the pixel electrode, a residual pixel bank layer on the pixel electrode, an electron transport layer, a quantum dot luminous layer, a hole transport layer, a hole injection layer and an anode layer in sequence from bottom to top. A residual bank film on the pixel electrode during pixel bank manufacture is used as an electron blocking layer, a QLED of an inverted structure is manufactured, due to an insulating characteristic of the bank film, charge injection of the pixel electrode to the QLED device is reduced, thereby achieving electron and hole injection balance in the QLED, improving device performance, at the same time, the problem of removing the residual bank film and the problem of easy color mixing caused by the process can also be avoided, the manufacturing cost is reduced, and the yield is improved.

The invention discloses a long-service-life quantum dot fluorescent composite film for an LED plant growth lamp and a preparation method thereof. The quantum dot fluorescent composite film comprises a quantum dot layer, protection base material layers and protection adhesive layers, wherein the upper surface and the lower surface of the quantum dot layer are covered by the protection base material layers, and four side surfaces of the quantum dot layer are covered by the protection adhesive layers. The LED plant growth lamp, which is equipped with a blue-light, purple-light or ultraviolet-light LEDto act as a light source, provided with the quantum dot fluorescent composite film can emit mixed light of red light and blue light. The wavelength, the half-peak width and the relative strength of the red light and the blue light emitted by the plant growth lamp can be changed through adjusting the type, the concentration and the dosage of quantum dots in the fluorescent composite film, thereby achieving requirements which are the most appropriate for plant growth.

The invention relates to the field of display, and in particular to a ligand, a quantum dot and a patterning method of a quantum dot layer. The invention provides the ligand, and the ligand comprisesa coordination unit, a cracking unit, and an adhesion force adjustment unit. The surface of the provided quantum dot is connected with the ligand. The provided patterning method is as follows: providing a base layer; coating the base layer with a mixture containing the quantum dot to form a quantum dot film; exposing the quantum dot film in a preset area by using ultraviolet light, wherein a photolysis reaction of the cracking unit in the ligand is carried out, and molecular segments containing the adhesion force adjustment unit fall off from the surface of the quantum dot after decomposing; and washing and removing the quantum dot film without exposure treatment by using an organic solvent, and performing drying to form a patterned quantum dot layer. The formed quantum dot layer has relatively high resolution.

The invention provides a quantum dot diffuser plate. PS or PC or PMMA plastic particles are selected as base material; the selected base material and powder mixture are well stirred and mixed to make optical master batches; 100 parts of the base material, 1 to 25 parts of the optical master batches, 1 to 25 parts of the GPPS and 1 to 9 parts of quantum dot are selected; the mixture is melted and well stirred in a extrusion forming machine; quantum dot diffuser plate sheet material is formed; the quantum dot diffuser plate sheet material is cooled through an extrusion line and is cut into quantum dot diffuser plate products which are suitable to backlight module groups. The quantum dot diffuser plate extraction forming is fused with quantum dots; a white light excitation layer is excited by blue light to generate white light rays pass through the dead space of the quantum dot diffuser plate; and the light emitted from the light outputting surface of the quantum dot diffuser plate is also white light; the two white light have small chromatic aberration and therefore the problem of chromatic aberration in visible ranges can be effectively solved. The color gamut of the backlight module has high uniformity.

The invention provides a quantum dot display substrate, a manufacturing method thereof and a display device, and belongs to the technical field of display. The quantum dot display substrate comprisesa black matrix pattern and a plurality of quantum dot light emitting units, wherein the quantum dot light emitting units are positioned in a light emitting region defined by the black matrix pattern,and is capable of emitting monochromatic light of different colors. The quantum dot display substrate also comprises a reflective barrier wall positioned between the adjacent quantum dot light emitting units, and the reflectivity of the reflective barrier wall to blue light is greater than a preset threshold. The quantum dot display substrate provided by the invention is characterized in that thecolor mixing caused by erroneous excitation between the quantum dot illuminating units can be prevented, and the utilization rate of blue light can be enhanced by the reflectivity of blue light in pixels, thereby greatly improving the color gamut and contrast of the display device.

The invention relates to a quantum dot film, a preparation method thereof, a backlight module group and a commercial quantum dot display. In the quantum dot film, a thermal insulation layer and a sealing protection layer are arranged on a quantum dot material layer to realize heat insulation, water-resisting and oxygen isolating protection for the quantum dot material layer. In this way, the quantum dot film has high temperature resistance performance, and is applicable to commercial displays, spliced screens and other large display equipment requiring long-time displaying. The applicability of the quantum dot film is improved. The backlight module group and the commercial quantum dot display employing the quantum dot film realize long-time displaying under relatively high temperature. The service lifetime of the backlight module group and the commercial quantum dot display is prolonged.

The present disclosure provides a quantum dot display apparatus. By adding quantum dot display technology of the present disclosure can provide sophisticated quantum dot patterns in the color filter layer and have higher resolution, color saturation and color gamut of the display apparatus, the well structure and manufacture is simple. The disclosure also provides a manufacturing method of a quantum dot display apparatus, the methods includes exposure, coating, developing process of the existing color filter to contain the surface modified red and green quantum dot resin composition with more sophisticated patterns, and making high resolution, color saturation and color gamut quantum dot display apparatus, the material preparation and fabrication process of this manufacturing method is simple, less waste of materials, low production cost, suitable for mass production.

A quantum dot emitting diode includes first and second electrodes facing each other; a quantum dot emitting material layer between the first and second electrodes; and an electron transporting layer including an electron transporting material and disposed between the quantum dot emitting material layer and the second electrode, wherein the electron transporting material includes a core of metal oxide and a shell of silica.

The invention provides a display base plate and a display device, and belongs to the technical field of quantum dot display, which aims at partially solving the technical problem of easiness in color mixing in the existing display device by using the quantum dot as a color filter film. The display base plate is arranged in the display device, and comprises a substrate, wherein a plurality of color filter films with different colors are arranged at one side of the substrate; the color filter films with different colors are used for emitting quantum dots of light with applicable color; an opaque retaining wall is arranged on part of periphery of each color filter film, and is provided with a first surface facing the light emitting surface of the display device; each color filter film is provided with a second surface facing the light emitting surface of the display device; compared with the second surface, each first surface is closer to the light emitting surface of the display device.

The invention provides a quantum dot display panel and a three-dimensional printing apparatus. The quantum dot display panel is composed of a substrate, a control circuit layer, a pixel definition layer, and a plurality of light-emitting units. The control circuit layer arranged at one side of the substrate includes a plurality of control circuits. The pixel definition layer and the plurality of light-emitting units are arranged at one side, far away from the substrate, of the control circuit layer; the pixel definition layer includes a plurality of openings; and the plurality of light-emitting units are arranged in the openings. The control circuit is connected with the plurality of light-emitting units electrically and is used for controlling light-emitting states of the light-emitting units; each light-emitting unit consists of a first electrode, a quantum dot light-emitting layer, and a second electrode successively in a direction away from the substrate; and light emitted by eachlight-emitting unit has the wavelength of 350nm to 450nm. With the quantum dot display panel and the three-dimensional printing apparatus, the dark-state brightness of the display panel is reduced, sothat a problem of light sensitivity of the resin corresponding to a non-effective graphic is solved.

The invention relates to quantum dot films and particularly relates to a quantum dot film with wide color gamut and a preparation method thereof. In order to improve the color gamut and color uniformity of quantum-dot display equipment, the invention provides the quantum dot film with wide color gamut. The quantum dot film comprises a quantum dot layer, wherein an upper barrier layer is adhered on the upper surface of the quantum dot layer; a lower barrier layer is adhered on the lower surface of the quantum dot layer; an upper protective layer is adhered on the upper surface of the upper barrier layer; a lower protective layer is adhered on the lower surface of the lower barrier layer; the quantum dot layer comprises a first quantum dot layer and a second quantum dot layer; the first quantum dot layer is of a prism structure formed by a plurality of triangular prisms in parallel; and the second quantum dot layer is coated above the first quantum dot layer. Compared with an existing quantum dot film, the quantum dot film provided by the invention has the advantages that the distribution of quantum dots is more uniform, so that the light emission of the quantum dot film is higher in uniformity, and the quantum dot film has better optical property. The quantum dot film can be applied to the quantum-dot display equipment.

The invention relates to the field of display, in particular to a color film base plate, a preparation method thereof, a display panel and a display device. The color film base plate comprises a substrate base plate and a black matrix, multiple subpixels are limited out by the black matrix and include red subpixels, green subpixels and blue subpixels, each red subpixel comprises a first light filtering layer arranged on the substrate base plate and used for filtering away green light and a quantum spot layer arranged on the first light filtering layer, each green subpixel comprises a second light filtering layer arranged on the substrate base plate and used for filtering away red light and a quantum dot layer arranged on the second light filtering layer, each blue subpixel is not providedwith a quantum dot layer and is used for transmitting blue light, and each quantum dot layer only comprises one kind of quantum dots which transmit red light and green light under excitation of the blue light. The color film base plate realizes three-color display under excitation of a blue backlight source; each quantum dot layer only comprises one kind of quantum dots, so that process is simplified.

The invention relates to an optical thin film, in particular to a quantum dot thin film. The invention aims to solve the problems that at present, high-energy blue light in quantum dot display severely hurts eyes and the luminous efficiency of a quantum dot thin film is general. The invention provides a high-efficiency quantum dot thin film capable of reflecting blue light and a preparation methodand application of the high-efficiency quantum dot thin film. The quantum dot thin film and a blue-light-resistant film (reflective) are integrated. The high-efficiency quantum dot thin film comprises a quantum dot glue layer, water-oxygen blocking layers and a functional blue-light-resistant layer or film, wherein the water-oxygen blocking layers coat the upper surface and the lower surface of the quantum dot glue layer; and the functional blue-light-resistant layer or film is attached to the upper water-oxygen blocking layer. The functional blue-light-resistant layer or film can reflect blue light, the reflected blue light secondarily stimulates quantum dots, the utilization rate of the blue light is increased, and the luminous efficiency of the quantum dot thin film is qualitatively improved. By the high-efficiency quantum dot thin film, the use amount of the quantum dots can be reduced, an effect of saving cost is achieved well, furthermore, part of blue light can be filtered out,and effects of relieving visual fatigue and protecting eyes are achieved.