Abstract:
A pixel circuit includes a driving sub-circuit, a writing sub-circuit, a light-emitting device and a fingerprint information output sub-circuit. The writing sub-circuit is coupled to the driving sub-circuit, a first signal terminal and a data signal terminal, which is configured to write a data signal to the driving sub-circuit under control of a signal from the first signal terminal. The driving sub-circuit is coupled to an anode of the device and a first voltage terminal, which is configured to drive the device to emit light by using a voltage from the first voltage terminal, and provide a coupling capacitance to acquire fingerprint information. The fingerprint information output sub-circuit is coupled to the anode, a third signal terminal and a signal reading line, which is configured to output a signal acquired at the anode as the information to the line under control of a signal from the third signal terminal.
Abstract:
The present disclosure relates to organic electroluminescent materials and organic electroluminescent devices, in particular, discloses a compound of formula (1), wherein R1, R2, R3 and R4 are each independently selected from hydrogen, a substituted or unsubstituted C1-20 alkyl, a substituted or unsubstituted C3-20 cycloalkyl, a substituted or unsubstituted aromatic hydrocarbyl, or a substituted or unsubstituted aromatic heterocyclic group; and at least one of R1, R2, R3 and R4 contains a group having a hole-transporting ability; and at least one of R1, R2, R3 and R4 contains a group having an electron-transporting ability; A and B each independently represent hydrogen, a substituted or unsubstituted, fused aromatic ring, or a substituted or unsubstituted, fused heteroaromatic ring containing a heteroatom(s) selected from O, N and S.
Abstract:
A light mixing element in a shape of a prism, and a cylinder of the prism of the light mixing element includes a first light-emitting inclined surface, a second light-emitting inclined surface, a bottom surface, a incident surface and a reflecting inclined surface; one side of the second light-emitting inclined surface is connected with one side of the first light-emitting inclined surface to form a top angle; the bottom surface is arranged opposite to the top angle; the incident surface is connected between one side of the bottom surface and the other side of the first light-emitting inclined surface; and the reflecting inclined surface is connected between the other side of the bottom surface and the other side of the second light-emitting inclined surface and arranged opposite to the incident surface and the first light-emitting inclined surface.
Abstract:
A display panel has a display region and a peripheral region. The display panel includes a substrate, a first metal layer disposed on the substrate, a planarization layer disposed on a side of the first metal layer away from the substrate, and a retaining wall structure located in the peripheral region and surrounding the display region. The first metal layer includes a signal line pattern located in the peripheral region. The planarization layer includes an opening in the peripheral region. At least a portion of the retaining wall structure is located in the opening. The signal line pattern is provided with at least one through hole, an orthogonal projection of the at least one through hole on the substrate is located within an orthogonal projection of the opening on the substrate, and is at least located on a side of an orthogonal projection of the retaining wall structure on the substrate.
Abstract:
The present invention relates to the field of organic electroluminescent technology, particularly relates to an aromatic amine derivative, its preparation method, uses and organic electroluminescent devices. The technical aim of the present invention is to improve the film forming ability and the redox repeatability. The aromatic amine derivative has the structure of formula I, wherein, R1, R2, R3 and R4 each independently represent a hydrogen, a substituted or unsubstituted C1-C40 alkyl, a substituted or unsubstituted C1-C40 alkoxy, a substituted or unsubstituted C3-C40 cycloalkyl, a substituted or unsubstituted C6-C50 aryl group, a substituted or unsubstituted C3-C50 heteroaryl containing one or two heteroatoms selected from N, O and S, or a substituted or unsubstituted C10-C40 fused aryl group formed together with the phenyl group linked therewith; wherein, m, n, p and q each independently represent 0, 1, 2, 3, 4 or 5; the substituents are one or more groups selected from the group consisting of a halogen, a C1-C10 alkyl, a C1-C10 alkoxy, a C3-C20 cycloalkyl, a C6-C20 aryl group or a C4-C20 heteroaryl group. The present invention may be applied in organic electroluminescent devices.
Abstract:
A cleaning apparatus and a cleaning method are provided. The cleaning apparatus is used for removing a residue on a substrate, and includes: a deformable device arranged on the substrate; and an excitation device configured to generate an excitation source for the deformable device, so as to enable the deformable device to be deformed under the effect of the excitation source, thereby to drive the substrate to vibrate and enable the residue to fall off from the substrate.
Abstract:
Disclosed are an organic electroluminescent display and a method for preparing the same, and a display device. The organic electroluminescent display comprises: a base substrate; an organic electroluminescent pixel array, which is set on the base substrate; a packaging coverplate or a packaging film, which is covered outside the organic electroluminescent pixel array; and a phase difference film and a polarization functional film located inside the packaging coverplate or the packaging film and attached to the organic electroluminescent pixel array in turn. In the organic electroluminescent display according to the invention, the unnecessary films, such as a TAC films that need to be attached to the two sides of a polarization functional film in an existing circular sheet polarizer and a binding agent layer, etc., can be omitted, thereby the transmittance of a display can be improved, and the contrast of a display can be increased; moreover, the overall thickness of a display may be reduced, and the problem of being difficult to roll up may be avoided; and there exists no interference of oxygen and aqueous vapor, thus the durability of the circular sheet polarizer can be increased.
Abstract:
A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate and sub-pixels. The sub-pixel includes a light-emitting element which includes a light-emitting functional layer and a first electrode and a second electrode. The display substrate further includes a defining structure, a first orthographic projection of a surface, close to the base substrate, of the defining structure between adjacent sub-pixels on the base substrate is completely within a second orthographic projection of a surface, away from the base substrate, of the defining structure on the base substrate, a maximum size of the second orthographic projection is greater than that of the first orthographic projection, and the defining structure includes an inorganic nonmetallic material; the light-emitting functional layer is disconnected at an edge of the defining structure, and second electrodes of adjacent sub-pixels are at least partially continuously arranged.
Abstract:
A display device, a method for automatically adjusting brightness of a display screen and a terminal equipment are provided. An ambient light detection device is integrated in an operable region of the display device. The ambient light detection device includes a light blocking layer and a photoelectric sensor. The display device includes a display assembly and a control device. The display assembly includes a backpanel assembly, the light blocking layer being arranged in the backpanel assembly and provided with a light passing hole suitable for the passing of ambient light, the photoelectric sensor being disposed under the backpanel assembly; a display screen disposed over the backpanel assembly; a display connected to the display screen; and a control device connected to the photoelectric sensor The display chip is connected to the control device, to adjust brightness of the display screen according to variance of the ambient light.
Abstract:
A display substrate, a method for manufacturing the same and a display device are provided. The display substrate includes a base substrate, first electrodes above the base substrate, and a light emitting layer disposed at a side of the first electrodes distal from the base substrate, the display substrate further includes signal lines extending in a first direction and fuse wires extending in a second direction, each fuse wire has a fusing point higher than that of the light emitting layer, the fuse wires are located at a side of the light emitting layer proximal to the base substrate and in contact with the light emitting layer, each fuse wire is electrically coupled to at least two signal lines, and an orthographic projection of at least one first electrode on the base substrate is located between orthographic projections of the at least two signal lines on the base substrate.