Mask plate
A mask plate and evaporation technology, which is applied in the field of mask plate, can solve the problems of uneven deformation, affecting the edge of the effective display area, and lower yield, so as to improve product yield, better evaporation effect, The effect of reducing deformation
Active Publication Date: 2018-04-06
TRULY HUIZHOU SMART DISPLAY
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Problems solved by technology
However, the strength of the transition area between the effective display area and the free area is different from that of the hollow opening. When stretching the net, this transition area is prone to abrupt deformation and unevenness, and there are wrinkles. In severe cases, it even affects the edge of the effective display area. , leading to lower yield
Method used
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[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0024] For example...
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Abstract
The invention relates to a mask plate. The mask plate comprises an idle area and at least one effective evaporation area, wherein the idle area is arranged on the outer side of the effective evaporation area; a plurality of evaporation openings are formed in the at least one effective evaporation area, and the evaporation openings are uniformly distributed; a transition area is further arranged between each effective evaporation area and the idle area, the transition area is surrounded by the effective evaporation area, the thickness of the transition area is smaller than that of the effectiveevaporation area and is smaller than that of the idle area. The transition area is arranged between the effective evaporation area and the idle area, due to the fact that the thickness of the transition area is smaller relative to the thickness of the effective evaporation area and the thickness of the idle area, the strength of the transition area is relatively low, when tensile force is appliedto two ends of the mask plate, in the force transferring process, the back action of the tensile force is gradually decreased, the deformation from the idle area to the effective evaporation area canbe in smooth transition, the wrinkles are effectively reduced, the deformation of the effective evaporation area is reduced, and the evaporation effect is better, so that the product yield of evaporation is improved.
Description
technical field [0001] The invention relates to the technical field of organic light-emitting display manufacturing, in particular to a mask plate. Background technique [0002] In the AMOLED (Active-matrix organic light emitting diode, active matrix organic light emitting diode) production process, the evaporation process is the most influential factor in the yield rate. The basic process of the evaporation process is to heat the organic material to evaporate the organic material. And the through hole etched through the high-precision fine mask plate is evaporated on the glass substrate to form a light-emitting unit. [0003] Usually, the manufacturing method of the fine mask is to weld the mask on the frame of the mask, and before welding, a certain tension is usually applied to the mask to stretch the mask, the purpose of which is to ensure The opening of the mask plate can meet the designed size. However, when a certain tension is applied to the mask plate, due to the ...
Claims
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CPCG03F1/68
Inventor 农艳菲龚建国冉应刚吴俊雄王衣可柯贤军苏君海李建华
Owner TRULY HUIZHOU SMART DISPLAY