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TFT (Thin Film Transistor) driving backboard and Micro-LED (Light Emitting Diode) display

A technology for driving backplanes and displays, applied in the direction of electric solid-state devices, semiconductor devices, electrical components, etc., can solve problems affecting display effects, etc., and achieve the effects of reducing process steps, saving manufacturing costs, and reducing borders

Pending Publication Date: 2019-11-01
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

Therefore, the frame will form a black line during splicing, which will affect the display effect

Method used

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  • TFT (Thin Film Transistor) driving backboard and Micro-LED (Light Emitting Diode) display
  • TFT (Thin Film Transistor) driving backboard and Micro-LED (Light Emitting Diode) display
  • TFT (Thin Film Transistor) driving backboard and Micro-LED (Light Emitting Diode) display

Examples

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Embodiment Construction

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The directional terms mentioned in the present invention, such as: up, down, left, right, front, back, inside, outside, side, etc., are only directions referring to the drawings. The embodiments described below with reference to the drawings and the directional terms used are exemplary, and are only used to explain the present invention, and should not be construed as limiting the present invention. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and / or the use of other materials.

[0017] The present invention proposes a new type of TFT driving backplane suitable for large-size Micro-LED applications. Th...

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Abstract

The invention discloses a TFT driving backboard and a Micro-LED (Light Emitting Diode) display. According to the invention, metal wiring layers used for being connected with a driving chip are prepared on the side face and the lower portion of a substrate, so that the size of a frame for panel splicing in large-size Micro-LED application can be reduced. During the preparation process of the metalwiring layers, a metal light blocking layer for blocking ambient light is prepared on the lower surface of the substrate and at the position opposite to an active layer, so that the steps of deposition and patterning of the original metal light shielding layer can be omitted when a thin film transistor is prepared. The process stepfor preparing the TFT driving backboard can be reduced, and the preparation cost is saved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a TFT driving backplane for large-size Micro-LED display and a Micro-LED display. Background technique [0002] Micro-LED technology, that is, LED miniaturization and matrix technology, refers to a high-density micro-sized LED array integrated on a chip. For example, each pixel of an LED display can be addressed and individually driven to light up. Millimeter down to micron. An important application field of Micro-LED is super-sized display. [0003] At present, the driving backplane used by Micro-LED is Top Gate Low Temperature Polysilicon Thin Film Transistor (Top Gate LTPSTFT). At present, low-temperature polycrystalline silicon thin-film transistors (LTPS) can only be produced in the 6th generation line (glass size 1.5m x 1.85m), and the size of the mother glass is small, and the production capacity for ultra-large-size applications is prone to bottlenecks. [0004] In ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/12
CPCH01L27/1214H01L27/124H01L25/167H01L29/78633H01L27/1218H01L27/1225
Inventor 李恭檀徐铉植
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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