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a mask

A mask and mask technology, applied in the field of mask, can solve the problems of large shadow area of ​​evaporation, low pixel position occlusion accuracy, poor straightness of the edge of the support occlusion strip, etc., so as to improve occlusion accuracy and reduce shadow occlusion. area, the effect of improving the straightness of the edge

Active Publication Date: 2019-06-14
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The mask plate of the prior art has poor straightness of the edge of the supporting shading strip, low pixel position shading accuracy, and large evaporation shadow area, which cannot realize high-definition masking for display panels with high pixel density.

Method used

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Embodiment Construction

[0036] The implementation process of the embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. It should be noted that the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.

[0037] see figure 1 with figure 2 As shown, in the OLED manufacturing process, a high-precision metal mask (Fine Metal Mask, FMM) or Open Mask is usually used as an evaporation mask, and the luminescent material 6 of the evaporation source 5 is evaporated on the corresponding opening area on the display panel 7. , Mask plays an important role in the manufacture of OLED products. The first support shading strip 3 (howling sheet) and the second support shading strip ...

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Abstract

The present application provides a mask to improve the edge straightness and pixel position shading accuracy of the second support shading strip and / or the first support shading strip of the mask slab, reduce the evaporation shadow area, and achieve high pixel density. High-precision masks for display panels. The mask plate includes: a plurality of first support shielding strips extending along a first direction, and a plurality of second support shielding strips extending along a second direction, the second support shielding strips and the first support shielding strips The strips are distributed vertically and intersecting; wherein, each of the second support shielding strips and / or each of the first support shielding strips is provided with a thinned area on the side of the first predetermined surface parallel to its extending direction, so The thinned region extends along the extension direction of the second support shielding strip or the first support shielding strip where the thinned region is located, and the thickness of the thinned region is smaller than other regions other than the thinned region thickness of.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a mask. Background technique [0002] Flat panel display (F1at Pane1 Display, FPD) has become the mainstream product in the market, and there are more and more types of flat panel displays, such as liquid crystal display (Liquid Crystal Display, LCD), organic light emitting diode (Organic Light Emitted Diode, OLED) display , Plasma Display Panel (P1asma DisplayPane1, PDP) and Field Emission Display (Field Emission Display, FED), etc. [0003] The mask plate of the prior art has poor straightness of the edge of the supporting shielding strip, low pixel position shielding accuracy, and large vapor deposition shadow area, which cannot realize high-definition masking for display panels with high pixel density. Contents of the invention [0004] The present application provides a mask plate to improve the edge straightness of the mask plate’s support shielding strip and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/04C23C14/24H10K99/00
CPCC23C14/042C23C14/24C23C14/12H10K71/166B05C21/005H10K71/00
Inventor 朱海彬王伟杰张峰杰姜博
Owner BOE TECH GRP CO LTD