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30results about How to "Increase the lighting voltage" patented technology

Pixel structure, manufacturing method thereof and display panel

The embodiment of the invention discloses a pixel structure, a manufacturing method thereof, and a display panel. The pixel structure includes a substrate, an anode layer, a first auxiliary light-emitting layer, a light-emitting layer, a cathode layer and at least one first resistor structure; the light-emitting layer at least comprises a first light-emitting portion and a second light-emitting portion; the first light-emitting portion corresponding to first sub pixels; the second light-emitting portion is corresponding to the second sub pixels; the turn-on voltage of the first sub pixels is larger than the turn-on voltage of the second pixels; the first resistor structures are located on a closed path from the first auxiliary light emitting layer to the cathode layer and are arranged at the vertical direction of the second light-emitting portion and are at least partially overlapped with the second light-emitting portion, and are not overlapped with the first light-emitting portion; and the absolute value of the difference value between the sum of the resistance values of the at least one first resistor structure and the second light-emitting portion and the resistance value of the first light-emitting portion is smaller than a first preset value, so that color crosstalk which occurs when a display panel comprising the pixel structure performs display can be alleviated, and the display quality of the display panel is improved.
Owner:TIANMA MICRO ELECTRONICS CO LTD +1

Organic electroluminescent device and organic electroluminescent apparatus

The invention relates to the technical field of display. The organic electroluminescent device comprises a first electrode layer, a first carrier functional layer, a light emitting layer and a secondelectrode layer which are stacked in sequence. The luminescent layer comprises a host material and a guest material. By doping the guest material in the first carrier functional layer, the carrier migration efficiency can be effectively regulated, and the lighting voltage of the organic electroluminescent device can be regulated. The organic electroluminescent device of the invention, comprises aplurality of pixel elements distributed in the array, by forming a light emitting layer guest material doping structure in a first carrier functional layer in a red photon pixel unit and / or a green photon pixel unit, the turn-on voltage of red photon pixel unit and / or green photon pixel unit are improved, the turn-on voltage difference is reduced, the color deviation problem of organic electroluminescent device is alleviated effectively, and the color stability of the device is improved.
Owner:YUNGU GUAN TECH CO LTD

Method for measuring content of particle surface ligand and quantum dot ink preparing method

The invention provides a method for measuring the content of particle surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity of quantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.
Owner:TCL CORPORATION

Method for measuring content of quantum dot surface ligand and quantum dot ink preparing method

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.
Owner:TCL CORPORATION

Method for measuring coverage rate of quantum dot surface ligand

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand, thereby realizing quality evaluation of quantum dots. If Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused bydifferent drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dotdisplay panel can be improved.
Owner:TCL CORPORATION

Method for measuring coverage rate of quantum dot surface ligand

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand, thereby realizing quality evaluation of quantum dots. If Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused bydifferent drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dotdisplay panel can be improved.
Owner:TCL CORPORATION

Method for measuring quantum dot surface ligand content and quantum dot ink preparing method

The invention provides a method for measuring the quantum dot surface ligand content and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity of quantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.
Owner:TCL CORPORATION

Method for measuring coverage rate of quantum dot surface ligand

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand. The coverage rate Ki of the organic ligand containing sulfydryl on the quantum dot surface is determined by an oxidation-reduction method. The method can be used for quality evaluation of the quantum dot. If the Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused by different drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dot display panel can be improved.
Owner:TCL CORPORATION

Method for measuring coverage rate of quantum dot surface ligand

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand. The coverage rate Ki of the organic ligand containing sulfydryl or nitrogen on the quantum dot surfaceis determined by potentiometric titration. The method can be used for quality evaluation of the quantum dot. If the Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the highstability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused by different drying rates in quantum dotsolution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dot display panel can be improved.
Owner:TCL CORPORATION

Method for measuring content of quantum dot surface ligand and quantum dot ink preparing method

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.
Owner:TCL CORPORATION

Display panel, manufacturing method thereof and display device

The invention relates to a display panel, a manufacturing method thereof and a display device, and belongs to the technical field of display. The display panel comprises a substrate and a plurality of sub-pixels located on the substrate, and the plurality of sub-pixels comprise red sub-pixels. The plurality of sub-pixels comprise an anode layer, a hole transport layer, a light-emitting layer and a cathode layer which are stacked on the substrate in sequence; the red sub-pixel further comprises at least two buffer layers, the at least two buffer layers are located between the hole transport layer and the light-emitting layer, in the first direction, the energy levels of the at least two buffer layers are gradually reduced, the energy levels of the at least two buffer layers are both lower than the energy level of the light-emitting layer, and the first direction is the direction from the hole transport layer to the light-emitting layer. The energy levels of the at least two buffer layers are gradually reduced, the charge injection difficulty is increased, charges are prevented from being gathered on the light-emitting layer, the service life of the light-emitting layer is prolonged, and therefore the service life of the display panel is prolonged.
Owner:BOE TECH GRP CO LTD

Method for measuring content of quantum dot surface ligand and quantum dot ink preparing method

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.
Owner:TCL CORPORATION

Quantum dot surface ligand content measuring method and quantum dot ink preparation method

The invention provides a quantum dot surface ligand content measuring method and a quantum dot ink preparation method. When the method is adopted to prepare the quantum dot ink, the uniformity of thequality of the quantum dot ink can be ensured, the solubility, the drying rate and the coffee ring effect of the quantum dot ink in different batches can be ensured to be the same, and the uniformityof the pixel resolution, the turn-on voltage and the photoelectric efficiency of the quantum dot display panel can be improved.
Owner:TCL CORPORATION

Method for measuring content of quantum dot surface ligand and quantum dot ink preparing method

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.
Owner:TCL CORPORATION

Method for measuring coverage rate of quantum dot surface ligand

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand, thereby realizing quality evaluation of quantum dots. If Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the quantum dot surface ligand coverage rate is determined; the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches ofquantum dots is guaranteed; a coffee ring effect caused by different drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brighteningvoltage and the photoelectric efficiency of the quantum dot display panel can be improved.
Owner:TCL CORPORATION

Pixel structure and manufacturing method thereof, display panel

The embodiment of the present invention discloses a pixel structure and its manufacturing method, and a display panel. The pixel structure includes: a substrate, an anode layer, a first auxiliary light-emitting layer, a light-emitting layer, a cathode layer, and at least one first resistance structure, wherein the light-emitting The layer at least includes a first light-emitting portion and a second light-emitting portion, the first light-emitting portion corresponds to the first sub-pixel, the second light-emitting portion corresponds to the second sub-pixel, and the turn-on voltage of the first sub-pixel is greater than the turn-on voltage of the second sub-pixel Voltage, the first resistance structure is located on the path from the first auxiliary light-emitting layer to the cathode layer and in the vertical direction of the second light-emitting part, at least partially overlaps with the second light-emitting part, does not overlap with the first light-emitting part, and at least one The absolute value of the difference between the resistance value of the first resistance structure and the second light-emitting part and the resistance value of the first light-emitting part is smaller than the first preset value, so as to reduce the color of the display panel including the pixel structure. The crosstalk phenomenon improves the display quality of the display panel.
Owner:TIANMA MICRO ELECTRONICS CO LTD +1

Method for measuring coverage rate of quantum dot surface ligand

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand, thereby realizing quality evaluation of quantum dots. If Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused bydifferent drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dotdisplay panel can be improved.
Owner:TCL CORPORATION

Organic electroluminescent device and organic electroluminescent device

ActiveCN108987593BEffectively regulate the lighting voltageEffective regulation of migration efficiencySolid-state devicesSemiconductor/solid-state device manufacturingColor shiftOrganic electroluminescence
The present invention relates to the field of display technology. The organic electroluminescent device described in the present invention comprises a first electrode layer, a first carrier functional layer, a light emitting layer and a second electrode layer which are sequentially stacked. The light-emitting layer includes a host material and a guest material, and by doping the guest material in the first carrier functional layer, the transfer efficiency of carriers can be effectively regulated, and thus the turn-on voltage of the organic electroluminescent device can be regulated. The organic electroluminescent device according to the present invention includes several pixel units distributed in an array, by forming a light-emitting layer guest material doping structure in the first carrier functional layer in the red sub-pixel unit and / or the green sub-pixel unit , to increase the turn-on voltage of the red sub-pixel unit and / or the green sub-pixel unit, reduce the difference in turn-on voltage, effectively alleviate the color shift problem of the organic electroluminescent device, and improve the color stability of the device.
Owner:YUNGU GUAN TECH CO LTD
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