Browsing by Author "Chen, Ju-Te"

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Method for debonding of thin glass substrate and carrier for manufacturing thin flexible displays
(2018-11-01)
Chen, Ju-Te
;
Yang, Sheng-Hsiung
;
照明與能源光電研究所
;
Institute of Lighting and Energy Photonics
Modern displays are becoming light, thin, and even curved and flexible. The thickness of glass substrates used in these displays has been reduced from its original value of 1.1 to 0.7mm and eventually to 0.5mm to create thinner displays. Glass substrates with a thickness of <0.3mm are extremely thin and fragile, can be easily deformed, and are therefore not suitable for direct incorporation into the display-manufacturing process. Glass-substrate suppliers bond thin glass substrates onto carrier glass substrates to form laminated glass substrates with increased overall thickness. The panel makers then manufacture the display on a laminated glass substrate. The carrier substrate is removed from the display to produce a thin panel. Glass-substrate makers debond the carrier from the thin glass substrate by applying mechanical force. However, the substrate may break during this debonding process. In this study, a novel method for bonding and debonding the carrier and glass substrates is proposed in which gas is injected between the carrier and thin glass substrate to separate them. This method effectively prevents the formation of edge defects in the thin glass substrate caused by breaks during the debonding process. We designed a debonding machine and established steps to debond the laminated glass substrate after a passive matrix organic light-emitting diode fabrication process. The results showed that this method can be used to efficiently debond the laminated glass substrate.
Novel Green Temporary Bonding and Separation Method for Manufacturing Thin Displays
(2020-01-01)
Chen, Ju-Te
;
Yang, Sheng-Hsiung
;
照明與能源光電研究所
;
Institute of Lighting and Energy Photonics
Owing to the rapidly growing popularity of portable products, there is an increasing demand for lightweight devices with thin displays. Glass substrates contribute substantially to the thickness and weight of display panels, and therefore, it is important to minimize their thickness. However, thin glass substrates are too fragile to be supported on their own and used directly. Thicker glass substrates are therefore used to fabricate display panels, and the substrate thickness is then reduced through etching and surface grinding. This approach is time-consuming, involves the use of highly hazardous chemicals, and produces acidic liquid waste. Thus, countries in which thin panels are produced have experienced severe environmental pollution problems related to their manufacture. In addition to the pollution produced, existing panel-thinning methods cannot satisfy the demand for increasingly thinner panels, and as a result, there is an urgent need for new panel-thinning technologies. This article proposes a novel green temporary bonding and separation method that allows thin glass substrates to be carried to directly produce thin panels. This method makes possible the rapid manufacture of thinner glass display panels for foldable and flexible displays. This method does not use any chemicals and does not produce any polluting waste and thereby contributes to environmental protection.