A kind of mask plate and preparation method of OLED panel
A mask plate and panel technology, which is applied in the field of mask plate and OLED panel preparation, can solve the problems of residual photoresist in pixel units and affect the ductility of inkjet printing ink, etc., and achieve the effect of improving spreadability and performance
Active Publication Date: 2022-08-05
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0010] In order to solve the above problems, the present invention provides a method for preparing a mask plate and an OLED panel, which is used to solve the problem that the photoresist is easy to remain in the pixel unit in the prior art, thereby affecting the ductility of the subsequent inkjet printing ink
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[0040] like figure 1 As shown, in this embodiment, the mask 10 of the present invention includes a light leakage region 110 and a light shielding region 120 surrounding the light leakage region 110 .
[0041] The mask plate is a transparent plate, and its material is a 10 cm quartz plate or other transparent materials.
[0042] The mask 10 of the present invention is correspondingly disposed on the pixel-defining layer 21 of the array substrate 20. In the subsequent inkjet printing process, the ink needs to be accurately dropped into the pixel-defining layer 21 without overflowing phenomenon occurs, so one of the key technologies of inkjet printing is to make the pixel-defining layer 21 have a certain degree of hydrophobicity, which can confine the ink in the pixel-defining layer 21. In this embodiment, the pixel-defining layer 21 It is an organic photoresist material containing a hydrophobic component, and the photoresist component has a water-transporting functional group. ...
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Abstract
The invention discloses a mask plate and a preparation method of an OLED panel. The mask plate is used to remove excess photoresist of a pixel unit, and the pixel unit has a main body area and a corner area connected to the main body area; the mask plate includes For the light leakage area and the light shielding area, when the excess photoresist of the pixel unit is removed, the main body area is completely blocked by the light shielding area, and the corner area is exposed in the light leakage area. The beneficial effect of the present invention is to provide a mask plate and a method for preparing an OLED panel. On the mask plate, a light-shielding area equal to the width of the pixel unit main body area and a light-leakage area spaced from the light-shielding area are arranged on the mask plate. The area corresponds to the main area, and the rest of the pixel unit, such as the corner area, is completely exposed in the light leakage area. Under the irradiation of ultraviolet light, the photoresist in the corner area is decomposed by the ultraviolet light irradiation, which improves the spreadability of the ink in the corner area. , to improve the performance of OLED panels.
Description
technical field [0001] The invention relates to the field of display, in particular to a method for preparing a mask plate and an OLED panel. Background technique [0002] OLED technology has a wide range of applications in the display field, lighting field, smart wear and other fields. [0003] With the development of science and technology, OLED technology has become an important candidate for the third-generation display technology, which is used in consumer electronics such as mobile phones, computers, and TVs. Its basic display principle: driven by an electric field, the organic material emits light through the injection and recombination of carriers. Full-color display can be achieved by RGB pixels independently emitting light, white light OLEDs combined with color filters, or blue OLEDs combined with light color conversion. OLED display technology can make the screen lighter and thinner, and its self-luminous properties can achieve higher contrast in the evening in ...
Claims
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IPC IPC(8): G03F1/00H01L27/32H01L51/56
CPCG03F1/00H10K59/00H10K71/135H10K71/00
Inventor 李文杰
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD