Abstract: A method for efficient manufacture of a color or monochrome display panel by an masse transfer of a large number of light emitting elements includes providing crystal blocks, providing a driving substrate, transferring the crystal blocks to the driving substrate, patterning the crystal blocks, and applying wavelength-converting elements to each light source, for a monochrome or color display device.

Abstract: A substrate and a display panel using the substrate are disclosed. The substrate includes a base layer; a magnetic material layer on a side of the base layer; and a thin film transistor (TFT) array layer on a side of the magnetic material layer away from the base layer.

Abstract: An adsorption device includes a substrate, a plurality of magnetic films, and a plurality of magnets. The substrate defines a plurality of receiving grooves spaced apart from each other. Each receiving groove defines a bottom wall and a side wall. Each magnetic film is in one receiving groove and covers the bottom wall and the side wall. The magnetic films are made of magnetic material. Each magnet is in one receiving groove. Each magnetic film is between the substrate and one magnet, a large number of magnetized LEDs of very small size are attracted on a one-to-one basis to the receiving grooves for transfer and placement of the LEDs onto a display panel which is in the course of being manufactured.

Abstract: A device for collecting and transferring light emitting elements of microscale size includes a non-magnetic plate, a plurality of magnetic probes, and a magnetic plate. The non-magnetic plate defines through holes. Each of the probes is fixed in one through holes. The magnetic plate is on a surface of the non-magnetic plate and closes one opening of each of the through holes. The magnetic plate generates a magnetic field, so that each of the probes magnetically attracts one light emitting element. A method for making the transfer device and a method for transferring light emitting elements using the transfer device are also disclosed.

Abstract: A method for transferring a large number of light emitting elements in a single operation during display panel manufacture includes providing a receiving substrate with light emitting elements; orienting the light emitting elements on a first platform by a first electromagnetic plate; transferring the light emitting elements on the first platform to a second platform by a second electromagnetic plate; and transferring the light emitting elements on the second platform to the receiving substrate by a third electromagnetic plate. Each light emitting element undergoes a coarse positioning and finer positionings during the transfer process, so an accuracy of the light emitting elements is high.

Abstract: A method for transferring light emitting elements precisely during manufacture of display panels includes providing light emitting elements; providing a first electromagnetic plate defining magnetic adsorption positions; providing a receiving substrate defining receiving areas; providing a second electromagnetic plate; energizing the first electromagnetic plate to magnetically adsorb one light emitting element at one adsorption position; providing a second electromagnetic plate; and transferring the light emitting elements to one receiving area of the receiving substrate.

Abstract: A quantum dot light-emitting diode includes a substrate, an anode electrode layer, a cathode electrode layer, a light-emitting layer, and an electron blocking layer. The anode electrode layer is disposed on the substrate. The cathode electrode layer is disposed on the anode electrode layer. The light-emitting layer is disposed between the cathode electrode layer and the anode electrode layer. The light-emitting layer includes a plurality of first particles. The electron blocking layer is disposed between the light-emitting layer and the anode electrode layer. The electron blocking layer includes a plurality of second particles. The first particles and the second particles are quantum dots. A size of the second particles is smaller than a size of the first particles.

Abstract: A method for transferring light emitting elements precisely during manufacture of display panels includes providing light emitting elements; providing a first electromagnetic plate defining magnetic adsorption positions; providing a receiving substrate defining receiving areas; energizing the first electromagnetic plate to magnetically adsorb one light emitting element at one adsorption position; facing the first electromagnetic plate to the receiving substrate; and transferring the light emitting elements to one receiving area of the receiving substrate.

Abstract: A method for making a redistribution circuit structure provides a substrate and forms a peelable layer on the substrate. A metal layer is formed on a surface of the peelable layer, the metal layer including a controlling circuit including at least two spaced units. A first photoresist layer is formed on a portion of the surface of the peelable layer and an insulating layer is applied to completely cover the first photoresist layer and the controlling circuit. Through holes are defined in the insulating layer to partially expose the controlling circuit and a seed layer applied on the insulating layer. A block layer is laid to divide the seed layer into multiple sections and electroplating in each section on a portion of the seed layer is applied to form a plating layer with better uniformity of thickness across all sections.

Abstract: A method for transferring light emitting elements precisely during manufacture of display panels includes providing light emitting elements; providing a first electromagnetic plate defining magnetic adsorption positions; providing a receiving substrate defining receiving areas; energizing the first electromagnetic plate to magnetically adsorb one light emitting element at one adsorption position; facing the first electromagnetic plate to the receiving substrate; and transferring the light emitting elements to one receiving area of the receiving substrate.

Abstract: A device to attract and hold microscopic items such as micro LEDs magnetically rather than by static electricity includes a substrate and a plurality of magnetic units on a surface of the substrate. The magnetic units are spaced apart from each other and are constrained in the size and direction of their individual magnetic fields. Each of the magnetic units includes a magnet and a cladding layer partially covering the magnet. The cladding layer is made of a magnetic material. A side of the magnet away from the substrate is exposed from the cladding layer to attract and hold one micro LED.

Abstract: An adsorption device includes a substrate and a magnetic film on a surface of the substrate. The substrate has magnetic properties and is capable of generating magnetic field. The magnetic film partially covers the surface. The magnetic film generates a magnetic field having a direction that is opposite to a direction of the magnetic field generated by the substrate. Portions of the surface of the substrate not covered by the magnetic film form positions to attract and adsorb target objects, and other portion of the surface of the substrate covered by the magnetic film is not able to attract any target object.

Abstract: An adsorption device includes a substrate, a plurality of magnetic films, and a plurality of magnets. The substrate defines a plurality of receiving grooves spaced apart from each other. Each receiving groove defines a bottom wall and a side wall. Each magnetic film is in one receiving groove and covers the bottom wall and the side wall. The magnetic films are made of magnetic material. Each magnet is in one receiving groove. Each magnetic film is between the substrate and one magnet, a large number of magnetized LEDs of very small size are attracted on a one-to-one basis to the receiving grooves for transfer and placement of the LEDs onto a display panel which is in the course of being manufactured.

Abstract: A method for transferring light emitting elements precisely during manufacture of display panels includes providing light emitting elements; providing a first electromagnetic plate defining magnetic adsorption positions; providing a receiving substrate defining receiving areas; providing a second electromagnetic plate; energizing the first electromagnetic plate to magnetically adsorb one light emitting element at one adsorption position; providing a second electromagnetic plate; and transferring the light emitting elements to one receiving area of the receiving substrate.

Abstract: A method for transferring light emitting elements during manufacture of a display panel includes providing light emitting elements; providing a first electromagnetic plate defining adsorption positions; providing a receiving substrate defining receiving areas; energizing the first electromagnetic plate to magnetically adsorb one of the light emitting elements at each adsorption position; facing the first electromagnetic plate to the receiving substrate; and transferring the light emitting elements to one corresponding receiving area of the receiving substrate.

Abstract: A method for transferring a large number of light emitting elements in a single operation during display panel manufacture includes providing a receiving substrate with light emitting elements; orienting the light emitting elements on a first platform by a first electromagnetic plate; transferring the light emitting elements on the first platform to a second platform by a second electromagnetic plate; and transferring the light emitting elements on the second platform to the receiving substrate by a third electromagnetic plate. Each light emitting element undergoes a coarse positioning and finer positionings during the transfer process, so an accuracy of the light emitting elements is high.

Abstract: An adsorption device includes a magnetic plate and a limiting layer. A surface of the magnetic plate includes a first region and a plurality of second regions spaced apart from each other. The first region and each second region do not overlap with each other. The first region forms a magnetic pole of the magnetic plate, and each second region forms the opposite magnetic pole of the magnetic plate. The limiting layer covers the first region. Each second region is exposed to the limiting layer and configured for adsorbing a small-scale LED as a target object.

Abstract: A method for making a redistribution circuit structure provides a substrate and forms a peelable layer on the substrate. A metal layer is formed on a surface of the peelable layer, the metal layer including a controlling circuit including at least two spaced units. A first photoresist layer is formed on a portion of the surface of the peelable layer and an insulating layer is applied to completely cover the first photoresist layer and the controlling circuit. Through holes are defined in the insulating layer to partially expose the controlling circuit and a seed layer applied on the insulating layer. A block layer is laid to divide the seed layer into multiple sections and electroplating in each section on a portion of the seed layer is applied to form a plating layer with better uniformity of thickness across all sections.

Abstract: A quantum dot light-emitting diode includes a substrate, an anode electrode layer, a cathode electrode layer, a light-emitting layer, and an electron blocking layer. The anode electrode layer is disposed on the substrate. The cathode electrode layer is disposed on the anode electrode layer. The light-emitting layer is disposed between the cathode electrode layer and the anode electrode layer. The light-emitting layer includes a plurality of first particles. The electron blocking layer is disposed between the light-emitting layer and the anode electrode layer. The electron blocking layer includes a plurality of second particles. The first particles and the second particles are quantum dots. A size of the second particles is smaller than a size of the first particles.

Abstract: A Sigma-Delta (?-?) analog-to-digital converter (ADC) and operation method thereof are provided. The ?-? ADC includes a ?-? modulator, a dynamic element matching (DEM) circuit and a control circuit. An input terminal of the ?-? modulator is configured to receive an analog signal. The ?-? modulator is configured to convert the analog signal into a digital signal based on a feedback signal. The DEM circuit is coupled to the ?-? modulator to receive the digital signal. The DEM circuit is configured to perform a DEM algorithm on the digital signal to generate a feedback signal, and provide the feedback signal to the ?-? modulator. The control circuit listens to the digital signal to detect a mute period. The control circuit disables the DEM circuit during the mute period to suspend a progress of the DEM algorithm.