公开(公告)号：US10446589B2

公开(公告)日：2019-10-15

申请号：US16031139

申请日：2018-07-10

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Junhui Lou ,  Tianyi Wu ,  Jujian Fu

IPC: H01L27/12 ,  H01L29/786 ,  H01L29/66 ,  G09G3/3225 ,  H01L27/32 ,  G02F1/1362 ,  G02F1/1368 ,  H01L51/52

Abstract: An array substrate, display panel, display apparatus, and method for manufacturing the array substrate are provided. Array substrate includes pixel driving circuit and peripheral driving circuit. Array substrate further includes a plurality of thin film transistors including first type of thin film transistor electrically connected into peripheral driving circuit for outputting driving signal and second type of thin film transistor connected to peripheral driving circuit for outputting scanning signal. The thin film transistor includes an active layer of oxide semiconductor including at least one sub-layer. Compared with second type of thin film transistor, active layer of first type of thin film transistor has more sub-layers, and thickness of active layer of first type of thin film transistor is larger. Each sub-layer of the active layer of the second type of thin film transistor is in a same layer as the active layer of the first type of thin film transistor.

公开(公告)号：US11961483B2

公开(公告)日：2024-04-16

申请号：US18308140

申请日：2023-04-27

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Nana Xiong ,  Jujian Fu

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2300/08 ,  G09G2310/065

Abstract: A display panel includes at least one pixel circuit and a light emitting element. One pixel circuit includes a driving transistor, and second and third transistors. The second transistor is connected between data line and a source of the driving transistor. The third transistor is connected between voltage adjusting signal line and the source. During a data writing phase, the second transistor is turned on, the data line provides data signal equal to VData to the source, a gate of the driving transistor receives the data signal, and voltage of the gate is VData+Vth. Vth denotes threshold voltage of the driving transistor. During a reset and adjustment phase, the third transistor is turned on, the voltage adjusting signal line provides adjusting voltage to the source, voltage of the source of the driving transistor is VJ, and the voltage of the gate remains VData+Vth. VData+Vth−VJ≤−2V.

公开(公告)号：US11670247B2

公开(公告)日：2023-06-06

申请号：US17567487

申请日：2022-01-03

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Nana Xiong ,  Jujian Fu

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2300/08 ,  G09G2310/065

Abstract: A display panel and a method for driving the same, and a display device are provided. The display panel includes a light emitting element and a pixel circuit that includes a data writing module configured to provide a data signal and an adjusting voltage, a driving module configured to provide a driving current to the light emitting element and including a driving transistor, and a compensation module configured to compensate a threshold voltage of the driving transistor. An operation process of the display panel includes a period of a data writing frame during which the pixel circuit executes a data writing phase during which the data writing module writes the data signal and a light emitting phase, and a period of a holding frame during which the pixel circuit executes a reset and adjustment phase during which the data writing module writes the adjusting voltage and the light emitting phase.

公开(公告)号：US11605344B2

公开(公告)日：2023-03-14

申请号：US17529594

申请日：2021-11-18

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd. ,  Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Yong Yuan ,  Nana Xiong ,  Jujian Fu

IPC: G09G3/32 ,  G09G3/3233

Abstract: A display panel and a driving method thereof, and a display device are provided. The display panel includes pixel circuits. Each pixel circuit includes a driving transistor, a data writing circuit, a light-emitting control circuit, a threshold compensation circuit and a bias adjustment circuit. The driving transistor includes a gate electrically connected to a first node, a first terminal electrically connected to a second node, and a second terminal electrically connected to the third node, and is configured to generate a driving current. The third node is connected to a light-emitting element through the light-emitting control circuit. The bias adjustment circuit is configured to provide a signal of a bias adjustment signal terminal to the second node under control of a signal of a first scanning signal terminal in such a manner that a bias state of the driving transistor is adjusted.

公开(公告)号：US11568798B2

公开(公告)日：2023-01-31

申请号：US17446932

申请日：2021-09-03

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Xingda Xia ,  Jujian Fu ,  Nana Xiong ,  Yuqi Hu

IPC: G09G3/325 ,  G09G3/32

Abstract: A display panel includes a pixel circuit that includes a light emitting module, a driving module, a first dual control module, and a second dual control module. A control end of the driving module is connected to a first node. The first dual control module has a control end connected to a first scanning line and has a first end connected to the first node. A first capacitor is formed between an intermediate node of the first dual control module and a first potential line. The second dual control module has a first end connected to the first node and has a second end connected to the driving module. A second capacitor is formed between an intermediate node of the second dual control module and a second potential line. Capacitance of one of the first capacitor and the second capacitor is greater than another.

公开(公告)号：US10937774B2

公开(公告)日：2021-03-02

申请号：US16264495

申请日：2019-01-31

Applicant: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Jujian Fu ,  Gang Liu

IPC: H01L25/16 ,  H01L21/683 ,  H01L23/00 ,  H01L33/52 ,  H01L25/075 ,  H01L33/62 ,  H01L33/50 ,  H01L33/42 ,  H01L33/56

Abstract: A Micro LED display panel, a method for fabricating the Micro LED display panel and a display device are provided. When the LED chip array is transferred, it may only be required to embed the LED chip array into the adhesive film layer. The LED chip array is bonded to the array substrate through the adhesive film layer. Then, unnecessary portions of the adhesive film layer and unnecessary LED chips are removed. It is not necessary to attach LED chips in the LED chip array one by one to the substrate by soldering, in which case the process of fabricating the Micro LED display panel is simplified, the difficulty in fabricating the Micro LED display panel is reduced, the influence of the high temperature generated by the soldering process on the LED chips is avoided, and damage to the LED chips during the transfer process is avoided.

公开(公告)号：US10896899B2

公开(公告)日：2021-01-19

申请号：US16503487

申请日：2019-07-04

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Xiao Chi ,  Tianyi Wu ,  Jujian Fu ,  Liang Xing ,  Gang Liu ,  Shaorong Yu

IPC: H01L27/14 ,  H01L29/04 ,  H01L29/15 ,  H01L31/036 ,  H01L25/16 ,  H01L27/12 ,  H01L27/32 ,  H01L51/52

Abstract: A display panel, a method for manufacturing the display panel, and a display device including the display panel are provided. The display panel includes: a thin film transistor array layer, and a light-emitting function layer at a side of the thin film transistor array layer. The thin film transistor array layer includes a planarization layer, an electrode layer, a first insulation layer, an active layer and a buffer layer. The electrode layer includes at least one first electrode and second electrode, and each first electrode includes a connection portion and an electrode portion which are connected to each other. The light-emitting function layer includes first contact electrodes and light-emitting elements. Heat generated by the light-emitting function layer is conducted to electrode portion of the first electrode through the connection portion of the first electrode and is uniformly distributed on the connection portion and the electrode portion.

公开(公告)号：US20200312832A1

公开(公告)日：2020-10-01

申请号：US16731086

申请日：2019-12-31

Applicant: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Xiao Chi ,  Shaorong Yu ,  Jujian Fu

IPC: H01L25/18 ,  H01L27/32 ,  H01L51/52 ,  H01L25/16

Abstract: Provided are a display panel and a display device. The display panel includes a first display area and a second display area. The first display area is reused as a sensor reserved area. The first display area includes a plurality of first pixel units. The second display area includes a plurality of second pixel units. The plurality of first pixel units include micro light-emitting diode pixel units, and the plurality of second pixel units include organic light-emitting diode pixel units. The first display area at least includes a region in which density of the plurality of first pixel units in the first display area is configured to be gradually decreased along a first direction.

公开(公告)号：US20190123096A1

公开(公告)日：2019-04-25

申请号：US16219969

申请日：2018-12-14

Applicant: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Jujian Fu ,  Gang Liu

IPC: H01L27/15 ,  G09F9/30 ,  H01L33/38 ,  H01L33/62 ,  H01L27/12

CPC classification number: H01L27/156 ,  G09F9/301 ,  H01L25/0753 ,  H01L25/167 ,  H01L27/1218 ,  H01L33/38 ,  H01L33/62

Abstract: A flexible light emitting diode (LED) display panel and an electronic device are provided. A bonding enhancement structure is arranged in the flexible LED display panel, so that a stress generated by a first electrode structure on a flexible substrate during bending can be reduced, a bonding force between the first electrode structure and the bonding enhancement structure can be enhanced, and thus bonding stability of an LED unit can be improved. The flexible LED display panel is applied in the electronic device, so that the LED unit does not easily peel off, and display effect and service life of the electronic device can be greatly improved.