Display panel, manufacturing method thereof, and display device
A technology for display panels and array substrates, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as poor progress, corrosion, and more and more scratches, so as to achieve good protection and avoid bad damage Effect
Active Publication Date: 2022-04-01
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0002] Due to the limitation of the number of masks (Mask), the traditional 6Mask TDDI products only have a thin passivation insulating layer (generally 400-500 nanometers) in the signal output area from the IC to the AA area (Active Area, effective display area). (PVX), when special-shaped products appear, due to the addition of CNC (Computer Numerical Control, computer numerical control) edging and other processes in the module manufacturing process, more and more scratches are made to the product, and the signal line (S / D line) exposed to air and water vapor, prone to corrosion defects, such as figure 1 As shown, serious progressive defects such as vertical lines or TP (Touch Panel, touch panel) squares are caused
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Embodiment 1
[0033] refer to Figure 3A to Figure 3D , illustrate the inventive concept of the present invention in conjunction with embodiment. see Figure 3A Firstly, the photoresist layer 2 is exposed using the mask plate 1, the part of the mask plate 1 corresponding to the pixel area is provided with a grating structure, so that the light transmittance of the mask plate 1 is 50%, the mask plate 1 in the welding area is completely hollowed out, and the pixel area The mask plate 1 is opaque (that is, not hollowed out). The photoresist layer 2 in the pixel area does not fully react during exposure, but only the upper layer reacts and is glowed, that is, because the exposure amount is only 50% of the original, the photoresist layer 2 is only glowed half. The photoresist layer 2 in the welding area is completely glowed and removed. The photoresist layer 2 in the pixel area is not removed because it is protected by the mask plate 1 . The photoresist layer 2 after photolithography is pat...
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Abstract
Provided is a display panel, comprising an array substrate, the array substrate comprising a pixel area and a wiring area, the thickness of a passivation insulating layer covering the wiring area is greater than the thickness of the passivation insulating layer covering the pixel area . A display device including the display panel and a preparation method of the display panel are also provided. In the display panel of the present invention, the thickness of the passivation insulating layer in the wiring area is greater than the thickness of the passivation insulating layer in the pixel area, and a thicker passivation insulating layer is used in the weak IC to AA area wiring area, which can better The ground forms a protection for the line, avoiding the occurrence of defects such as vertical lines or squares.
Description
technical field [0001] The present invention relates to the field of display technology, in particular to a display panel, a preparation method thereof and a display device. Background technique [0002] Due to the limitation of the number of masks (Mask), the traditional 6Mask TDDI products only have a thin passivation insulating layer (generally 400-500 nanometers) in the signal output area from the IC to the AA area (Active Area, effective display area). (PVX), when special-shaped products appear, due to the addition of CNC (Computer Numerical Control, computer numerical control) edging and other processes in the module manufacturing process, more and more scratches are made to the product, and the signal line (S / D line) exposed to air and water vapor, prone to corrosion defects, such as figure 1 As shown, serious progressive defects such as vertical lines or TP (Touch Panel, touch panel) squares are caused. [0003] Traditional LCD products leave the required graphics ...
Claims
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IPC IPC(8): H01L27/12H01L21/77
CPCH01L27/1248H01L27/1259
Inventor 张晓萍郑仰利郭宝磊次刚孙兴盼朱建国张扬张乐马晓安娜谢晓波吴昊
Owner BOE TECH GRP CO LTD