Boe Technology Group Co., Ltd.

Ordos Yuansheng Optoelectronics Co., Ltd.

Nan Lu

Jing Liu

Wen Sun

Guangjun Zhang

Hualing Yang

Lina Liu

Chenggeng Zhang

Yufei Wang

Yanmin Feng

An apparatus for controlling an EL drive voltage for a display panel is disclosed, which includes a current sensing circuit configured to detect an EL drive current signal outputted to the display panel, and convert the EL drive current signal into a first voltage signal, a signal generation circuit configured to generate a pulse signal based on the first voltage signal, a current protection circuit configured to generate a first control signal based on the first voltage signal and a reference voltage, and a signal coupling circuit configured to output, based on the first control signal, the pulse signal or a low level signal as a second control signal to control the EL drive voltage. According to the embodiments of the present disclosure, the EL drive voltage of the display panel can be dynamically controlled, and be reset to normal when it is overhigh.

Apparatus and method for controlling EL drive voltage of display panel

A touch display device is provided. The touch display device comprises a display panel (), the display panel () has a plurality of pixel units (), each of the pixel units () includes a functional region (), and a non-functional region () is formed between functional regions () of adjacent pixel units. The touch display device further comprises a plurality of lines of sensor units (), and adjacent sensor units in each line of the sensor units are electrically connected with each other by a connection unit. The connection unit includes a connection bridge (), a projection of at least part of the connection bridge () on a light emission surface of the display panel () is located in the non-functional region () between the functional regions () of adjacent pixel units and extends in an extension direction of the non-functional region (). A shadow dispelling effect of the connection bridge is improved, and display quality of the touch display device is improved.

Touch display device

Growing community of inventors

Beijing, China

Nan Lu