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39results about How to "High PPI" patented technology

Display backplane and manufacturing method thereof, display panel and display device

ActiveCN108257977AThe pixel capacitance value does not decreaseIncrease opening ratioSolid-state devicesSemiconductor devicesCapacitanceElectrical conductor
The invention provides a display backplane and a manufacturing method thereof, a display panel and a display device. The display backplane comprises a substrate, a first shading layer, a first thin film transistor, a first film layer and a third electrode. The first shading layer is arranged on one side of the substrate. The first thin film transistor is arranged on one side of the first shading layer away from the substrate, and includes a first active layer, a first source, a first drain and a first top gate electrode. The first film layer includes a first semiconductor part and a first conductor part, and the first semiconductor part constitutes the first active layer. The third electrode is arranged in the same layer as the first drain. The first shading layer and the first conductor part constitute a first capacitor. The third electrode and the first conductor part constitute a second capacitor. The shading layer of the display backplane not only can protect the light stability ofthe TFT structure from influence, but also can constitute a laminated pixel capacitor together with the first conductor part and the third electrode. The laminated capacitor structure can achieve high opening rate and high PPI while increasing the pixel capacitance value and improving the driving performance.
Owner:BOE TECH GRP CO LTD

Pixel driving circuit, driving method thereof and display device

The invention provides a pixel driving circuit. The pixel driving circuit is characterized in that each input module is connected with a data line, a corresponding scanning line and a corresponding first node, and the data line and the first node are connected under the control of the scanning line; a control end of a driving module is connected with a corresponding first node, a first end and a second end are connected with a corresponding second node and a first end of a corresponding light emitting module, and the second node and the first end of the light emitting module are conducted under the control of the first node; a first reset module is connected with a first power line, a first control line and all second nodes, so that the first power line and the second nodes are conducted independently under the control of the first control line; a control module is connected with all first nodes, all third nodes and a third control line, so that the third nodes and the corresponding first nodes are conducted independently under the control of the third control line; a second reset module is connected with a third power line, a second control line and all the third nodes, so that the third power line and the third nodes are conducted under the control of the second control line; a first end and a second end of a memory module are connected with the corresponding second node and the corresponding third node respectively, so that charge and discharge are performed under the control of the second node and the third node, and voltage difference of the second node and the third node is kept when the third node is in suspension joint.
Owner:BOE TECH GRP CO LTD

Pixel circuit, driving method thereof and display panel

PendingCN114708832AReduce layout areaImprove threshold compensation effectStatic indicating devicesHemt circuitsComputer science
The embodiment of the invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a driving module, a data writing module, an auxiliary module, a compensation module, a storage module, a coupling module and a light emitting module, the data writing module is used for writing data voltage into the control end of the driving module through the auxiliary module; the compensation module is connected between the first end and the control end of the driving module and is used for compensating the threshold voltage of the driving module; the coupling module is connected with the compensation module and is used for adjusting the voltage of the control end of the driving module through the compensation module according to the received jump voltage; the storage module is connected with the control end of the driving module, and the driving module is used for providing driving signals for the light-emitting module according to the voltage of the control end and driving the light-emitting module to emit light. According to the pixel circuit provided by the embodiment of the invention, the compensation effect can be improved, and meanwhile, the number of via holes is reduced, so that the layout area of pixels is reduced, and high PPI can be realized.
Owner:YUNGU GUAN TECH CO LTD
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