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PLED driving chip and display device

A drive chip, GND technology, applied in the direction of static indicators, instruments, etc., can solve the problems of unreasonable power supply pin layout, excessive display brightness reduction, large ITO voltage drop, etc., to reduce impedance, reduce impedance, The effect of reducing the brightness reduction

Pending Publication Date: 2022-01-07
上海傲显科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] Due to the unreasonable layout of the power supply pins of the existing PLED display chip, when the electronic barcode product is applied, the ITO (Indium Tin Oxide, indium tin oxide, an N-type oxide semiconductor) impedance of the power signal line is too large. During the display period, the voltage drop on the ITO impedance is too large, and the display brightness decreases too much, which affects the display effect

Method used

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  • PLED driving chip and display device

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] Please refer to figure 1 , the embodiment of the present invention provides a PLED driver chip, including a substrate 10, a VDD (DeviceVoltage, the positive pole of the working voltage of the chip) interface 20, a GND (Ground, negative pole of the working voltage of the chip) interface 30, a signal line interface 40, an external VDD connection line 50, external GND connection line 60, external signal line connection line 70 and GND terminal (not shown). The GND terminal is located in the substrate 10, the VDD interface 20, the GND interface 30, and the signal line interface 40 are all arranged on the outer surface of the substrate 10, the external VDD connection li...

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Abstract

The invention discloses a PLED driving chip which comprises a VDD interface, a GND interface and a signal line interface which are located outside the PLED driving chip, the VDD interface, the GND interface and the signal line interface are linearly arranged, and the signal line interface is located between the VDD interface and the GND interface. The invention further discloses a display device which comprises PLED glass and any one of the PLED driving chips. According to the PLED driving chip disclosed by the invention, the VDD interface and the GND interface are arranged at the two sides of the signal line interface, so that the VDD interface and the GND interface have enough space for arranging a power supply connecting line with a large width, and the impedance of the power supply connecting line is reduced, thereby reducing the voltage drop on a loop, reducing the reduction of the display brightness of the PLED and reducing the heat loss of a power supply. the use efficiency of the battery is improved.

Description

technical field [0001] The invention relates to the field of chip technology, in particular to a PLED driving chip and a display device. Background technique [0002] PLED (Polymer Light-Emitting Diode, polymer light-emitting diode) display is mainly used in the field of cheap LED (Light-Emitting Diode, light-emitting diode) display, such as electronic tags, electronic barcodes, electronic two-dimensional codes, etc. The PLED chip is used to drive the PLED glass, and convert the information to be displayed into the driving signal required by the PLED glass. [0003] Due to the unreasonable layout of the power supply pins of the existing PLED display chip, when the electronic barcode product is applied, the ITO (Indium Tin Oxide, indium tin oxide, an N-type oxide semiconductor) impedance of the power signal line is too large. During the display period, the voltage drop on the ITO impedance is too large, and the display brightness decreases too much, which affects the display...

Claims

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Application Information

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IPC IPC(8): G09G3/3208G09G3/20
CPCG09G3/3208G09G3/2096G09G2370/08
Inventor 徐海涛沈良超
Owner 上海傲显科技有限公司
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