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OLED display panel and method for preparing OLED display panel

A technology for display panels and control lines, which is used in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as poor connection between auxiliary cathodes and cathodes, and achieve improved power supply voltage drop phenomenon, increased width, and improved connection. Yield effect

Active Publication Date: 2021-09-24
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an OLED display panel and a method for preparing the OLED display panel, so as to alleviate the technical problem of poor connection between the auxiliary cathode and the cathode in the existing OLED display panel

Method used

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  • OLED display panel and method for preparing OLED display panel
  • OLED display panel and method for preparing OLED display panel
  • OLED display panel and method for preparing OLED display panel

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Embodiment Construction

[0033] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0034] The invention provides an OLED display panel and a manufacturing method of the OLED display panel, so as to alleviate the technical problem of poor connection between the auxiliary cathode and the cathode in the existing OLED display panel.

[0035] Such as figure 2 As shown, it is a schematic diagram of the first structure of the OLED display panel provided b...

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Abstract

The invention provides an OLED display panel and a method for preparing the OLED display panel. The OLED display panel includes a pixel setting area and a signal line setting area arranged in an array, and a plurality of pixels are arranged in the pixel setting area; The signal line is set in the signal line setting area, and the signal line includes a data line, a sensing line, a power line, a scanning line and a sensing control line; wherein, in the signal line setting area, an auxiliary cathode is also set, and the auxiliary cathode and the cathode electrode connection to reduce the impedance of the cathode. By arranging the signal lines of multiple pixels in the signal line setting area, the width of the signal line setting area is increased, and the cathode and the auxiliary cathode are directly electrically connected in the signal line setting area, which improves the connection yield of the cathode and the auxiliary cathode , reducing the resistance of the cathode and improving the voltage drop phenomenon of the power supply.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel and a method for preparing the OLED display panel. Background technique [0002] In existing top-emitting OLED (Active Matrix Organic Light Emitting Diode, organic light-emitting diode) devices, due to the high resistivity of the cathode, it is usually necessary to make an auxiliary cathode on the backplane to reduce the cathode impedance and alleviate the IR-drop (power drop). [0003] Such as figure 1 As shown, the existing OLED display panel includes a substrate 100, a driving circuit layer 110, a pixel definition layer 130, a pixel electrode 140, a light emitting function layer 150, a cathode 160, and an auxiliary cathode 170. Since the cathode 160 and the auxiliary cathode 170 are formed with In order to connect the cathode 160 and the auxiliary cathode 170 of the light-emitting functional layer 150 , the light-emitting functional layer 150 is usuall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/1315H10K50/824H10K59/1201H10K71/00H10K59/131
Inventor 蔡振飞
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD