A composite substrate, a method for manufacturing a flexible display, and a flexible display
A flexible display and composite substrate technology, applied in semiconductor/solid-state device manufacturing, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of reducing product yield and increasing production costs, so as to improve product yield and reduce The effect of production costs
Active Publication Date: 2017-09-19
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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Problems solved by technology
[0004] like figure 1 As shown, in the current development of flexible organic light emitting diode (Organic Light Emitting Diode, OLED) display technology, the mainstream flexible substrate manufacturing method is to use coating equipment to evenly coat the plastic solution on the glass substrate 11, and then fully bake Solidify to form a plastic substrate 12, then perform a TFT process on the plastic substrate, OLED evaporation to form an organic display element layer 13, then form an encapsulation film 14 through an encapsulation process, and finally use a laser lift-off process (Laser Lift Off, LLO) to separate the plastic substrate from the glass. The substrate is separated to obtain a flexible and flexible OLED display. Experiments have found that the OLED display after the above process, especially the plastic substrate 12 or the organic display element layer 12, will have problems such as deformation, melting, and cracking, which will reduce product yield and increase production. cost
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[0029] In order to make the purpose and features of the present invention more comprehensible, the specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.
[0030] The thickness and shape of each film layer in the drawings do not reflect the real scale, and the purpose is only to illustrate the content of the present invention.
[0031] Through a large number of experimental studies by R&D personnel, it has been found that in the prior art, problems such as deformation, melting, and cracking of the flexible plastic substrate or display element layer are mainly due to the high temperature process, especially the final laser stripping. During the glass substrate separation process, the laser will ablate the plastic on the surface of the glass substrate. Due to the poor thermal conductivity of glass and flexible plastics, the temperature of the plastic substrate may be too high, and the temperature ca...
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The invention provides a composite substrate for manufacturing a flexible display, which comprises: a substrate; a sacrificial layer above the substrate; a heat conduction layer above the sacrifice layer; and a flexible material layer above the heat conduction layer. By adopting the composite substrate of the present invention, problems such as deformation, melting, and cracking of the flexible substrate or display elements of the flexible display that affect the display quality can be reduced, thereby improving display performance, improving product yield, and reducing production costs. The invention also provides a method for manufacturing the flexible display and the flexible display.
Description
technical field [0001] The present invention relates to a composite substrate for manufacturing a display, a method for manufacturing a display, and a display, and in particular to a composite substrate for manufacturing a flexible display, a method for manufacturing a flexible display, and a flexible display. Background technique [0002] In the history of display development, with the advancement of optoelectronic technology and semiconductor manufacturing technology, flat-display panels (flat-display panels) with superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radiation have gradually become the market mainstream. [0003] In today's display technology, due to the advantages of lightness, impact resistance, flexibility, wearability and portability, flexible display panels have become a new generation of forward-looking display technology. However, in the current flexible display manufacturing process, ...
Claims
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IPC IPC(8): H01L51/52H01L51/50H01L51/56
CPCH10K77/111H10K50/80H10K50/00H10K2102/311H10K71/00Y02E10/549Y02P70/50
Inventor 肖灿俊陈正忠
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD