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Pixel drive circuit and method of making the same

A technology for a pixel driving circuit and a manufacturing method, which is applied in the directions of circuits, electrical components, and electric solid-state devices, can solve the problems of complex production processes and high production costs of the pixel driving circuit.

Active Publication Date: 2022-07-12
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a pixel driving circuit and its manufacturing method to solve the technical problems of complex production process and high production cost of the pixel driving circuit

Method used

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  • Pixel drive circuit and method of making the same
  • Pixel drive circuit and method of making the same
  • Pixel drive circuit and method of making the same

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Embodiment Construction

[0051] Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application.

[0052] see figure 1 , figure 1 This is a schematic structural diagram of a pixel driving circuit provided in the present application. The present application provides a pixel driving circuit 1 . The pixel driving circuit 1 includes a substrate 10 , a metal layer 20 , a buffer layer 30 , a channel layer 401 , a passivation layer 50 and an anode layer 60 .

[0053] The metal layer 20 is disposed on the substrate 10, and the metal layer 20 may include a first metal pattern 201A, a f...

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Abstract

The present application provides a pixel driving circuit and a manufacturing method thereof. A first metal pattern, a first light shielding pattern, a second metal pattern, a second light shielding pattern, a third light shielding pattern and a third metal pattern are fabricated on a substrate through one process. A metal layer, and a first anode pattern and a second anode pattern are formed on the passivation layer, the first anode pattern is connected to the metal layer through a first via hole to form the drain of the third transistor, and the second anode pattern passes through The second via hole is connected to the metal layer to form the drain of the first transistor and the drain of the second transistor, which reduces the production process, not only improves the production efficiency, but also reduces the production cost.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a pixel driving circuit and a manufacturing method thereof. Background technique [0002] Organic Light-Emitting Display (OLED) has the advantages of low power consumption, high color gamut, high brightness, wide viewing angle, and high response speed, so it is favored by the market. The OLED panel has a plurality of pixels arranged in an array, and each pixel needs to be driven by a pixel driving circuit. The existing 3T1C pixel driving circuit (including three thin film transistors and a storage capacitor) can compensate the threshold voltage of the driving thin film transistor, so that the display brightness of the OLED panel is more uniform. [0003] However, in the manufacturing process of the existing 3T1C pixel driving circuit, multiple functional layers need to be opened to realize the connection between the thin film transistors, and the production proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/84H01L27/12H01L27/32
CPCH01L27/1288H01L27/124H01L27/1214H01L27/1255H10K59/12H10K59/1201
Inventor 刘洺君王坦
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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