Organic light-emitting display device and bending method of flexible substrate thereof
A flexible substrate, light-emitting display technology, applied in organic semiconductor devices, photovoltaic power generation, electric solid devices and other directions, can solve the problems of affecting the appearance effect, local stress concentration, unattainable toughness, etc., to maintain aesthetic performance, improve flexibility performance, The effect of flatness improvement
Active Publication Date: 2020-09-01
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0004] Because the PI substrate itself is very thin, the shape of the bent part cannot be guaranteed when the PI substrate is bent, and the toughness cannot be achieved. Moreover, if the shape of the bent part is irregular, it will cause local stress concentration and breakage, which also affects the overall appearance. Effect
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[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0028] see figure 1 and figure 2 , the organic light-emitting display device of the embodiment of the present invention includes a flexible substrate 10, an organic light-emitting display device 20 disposed on the upper surface of the flexible substrate 10, and an ultraviolet curing adhesive (ie, UV adhesive) layer 30, wherein the flexible substrate 10 is preferably a PI substrate. It includes a first part 11 provided with an organic light emitting display device 20 and a second part 12 connected to one end of the first part 11 . The upper surface of the second part 12 may be formed with...
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The invention discloses a method for bending a flexible substrate of an organic light-emitting display device, which includes: providing a flexible substrate, the flexible substrate includes a first part and a second part connected to one end of the first part; Coating UV curing adhesive; determining the lowest point of the surface of the UV curing adhesive; taking the lowest point of the surface of the UV curing adhesive as a reference, determining the cutting reference plane of the UV curing adhesive, and cutting; bending the second part toward the lower surface of the flexible substrate , forming a U-shaped arch, so that the end of the second part is hidden on the back of the first part. In the present invention, ultraviolet curable glue is coated on the curved part of the flexible substrate, and the flatness of the ultraviolet curable glue is improved by laser cutting process. Due to the reinforcing effect of the ultraviolet curable glue, the force of each part of the flexible substrate after bending is basically the same , which not only improves the flexibility performance of the curved part of the flexible substrate, but also maintains the aesthetic performance of the flexible substrate bending.
Description
technical field [0001] The present invention relates to the technical field of organic light-emitting, and in particular, to an organic light-emitting display device and a method for bending a flexible substrate thereof. Background technique [0002] OLED is an organic light-emitting diode (Organic Light-Emitting Diode), which has the characteristics of self-luminescence, clear and bright, light and thin, fast response speed, wide viewing angle, low power consumption, wide applicable temperature range, low cost, and simple manufacturing process, so it is widely used. As a new generation of display methods, it has begun to gradually replace traditional liquid crystal displays, and is widely used in mobile phone screens, computer monitors, full-color TVs, etc. [0003] Unlike traditional LCD displays, OLED display technology does not require a backlight and uses a very thin coating of organic materials and glass substrates that emit light when an electric current flows through...
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IPC IPC(8): H01L51/56H01L51/00H10K99/00
CPCH10K77/111H10K2102/311H10K71/00Y02E10/549
Inventor 陶强
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD