CN109523923A - 可弯折盖板及柔性显示装置 - Google Patents

可弯折盖板及柔性显示装置 Download PDF

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CN109523923A
CN109523923A CN201811565611.5A CN201811565611A CN109523923A CN 109523923 A CN109523923 A CN 109523923A CN 201811565611 A CN201811565611 A CN 201811565611A CN 109523923 A CN109523923 A CN 109523923A
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cover board
bent
flexible display
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葛晓明
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to PCT/CN2019/075527 priority patent/WO2020124766A1/zh
Priority to US16/605,038 priority patent/US20210337688A1/en
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
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    • H10K77/111Flexible substrates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
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    • B32B2457/206Organic displays, e.g. OLED
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    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
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Abstract

本发明提供一种可弯折盖板及柔性显示装置。本发明的可弯折盖板,通过在对应弯折区设置凹槽,使弯折区呈拱桥式结构,从而可以有效增强弯折能力,并且通过采用经过掺杂处理和镭射处理的玻璃板材料,改变玻璃材料的原有结构和性质,从而可以大幅提升表面硬度,进而可以相应提高柔性显示装置的弯折能力以及表面硬度,在提升了柔性显示装置弯折能力的同时满足了客户的触摸需求。

Description

可弯折盖板及柔性显示装置
技术领域
本发明涉及显示技术领域,尤其涉及一种可弯折盖板及柔性显示装置。
背景技术
有机电致发光二极管(Organic Light Emitting Diode,OLED)显示器具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽,可实现柔性显示与大面积全色显示等诸多优点,被业界公认为是最有发展潜力的显示装置。目前,OLED技术越来越广泛地应用于手机、数码摄像机、笔记本电脑、电视等产品中。其中,柔性OLED(Flexible OLED)技术受到广泛关注,该技术的优势在于其能够实现可弯折的OLED显示装置。消费者关注的是这些新型移动设备是否设计良好、重量轻、外形薄并且结构简洁。移动品牌制造商希望面板制造商提供具有小弯曲半径(小于1-3毫米)的可折叠显示面板,这样他们就可以制造出纤薄且简洁的可折叠装置。
单独的柔性OLED面板的确可以很容易进行折叠,但柔性OLED模块,通常包括层叠设置的面板、偏光片、触控传感器及盖板玻璃,则不容易折叠,原因是其柔韧性不够,而且各个组成结构层所受到的弯曲折迭应力或拉力不一样。为了实现可折叠OLED显示面板,面板制造商必须创造一种更简洁且纤薄的模块结构。通常会考虑通过更改偏光片、触控传感器和盖板玻璃的常规结构来降低模块的厚度。但是更改常规结构比如盖板玻璃的厚度的同时可能会降低屏幕本身硬度,使得消费者体验的手感不佳。因此需要我们开发出一种可以提高表面硬度的柔性可折叠显示装置的结构来满足消费者和移动品牌制造商的这一需求,在既能提升柔性显示装置弯折能力的同时,又能满足表面硬度需求。
发明内容
本发明的目的在于提供一种可弯折盖板,弯折能力及表面硬度均得以增强,进而可以提升柔性显示装置弯折能力的同时满足其表面硬度需求。
本发明的另一目的在于提供一种柔性显示装置,采用上述的可弯折盖板,在提升弯折能力的同时也可满足表面硬度需求。
为实现上述目的,本发明提供一种可弯折盖板,包括至少两非弯折区及连接相邻两非弯折区的弯折区;
所述弯折区一侧表面设有凹槽,所述弯折区通过该凹槽由靠近非弯折区的两侧向中心的厚度逐渐减小而呈拱桥结构;
所述可弯折盖板为经过掺杂处理和镭射处理的玻璃板。
所述掺杂处理指的是钾离子掺杂处理。
所述镭射处理指的是在700℃以上的温度下利用波长为308nm的激光所进行的镭射处理。
所述非弯折区的厚度为60-80μm。
所述凹槽的深度为40-60μm。
所述凹槽的深度为所述所述非弯折区的厚度的2/3。
所述凹槽的宽度为12-20mm。
本发明还提供一种柔性显示装置,包括柔性显示面板及设于所述柔性显示面板上的如上所述的可弯折盖板;
其中,所述凹槽设置在所述可弯折盖板靠近所述柔性显示面板的一侧表面。
所述的柔性显示装置还包括位于所述柔性显示面板远离可弯折盖板一侧对所述柔性显示面板进行支撑的中框。
所述柔性显示面板为OLED显示面板。
本发明的有益效果:本发明的可弯折盖板,通过在对应弯折区设置凹槽,使弯折区呈拱桥式结构,从而可以有效增强弯折能力,并且通过采用经过掺杂处理和镭射处理的玻璃板材料,改变玻璃材料的原有结构和性质,从而可以大幅提升表面硬度,进而可以相应提高柔性显示装置的弯折能力以及表面硬度,打破现有柔性显示装置“硬不能折,折不能硬”的矛盾,在提升柔性显示装置弯折能力的同时满足了客户的触摸需求。本发明的柔性显示装置,采用上述的可弯折盖板,在提升弯折能力的同时也满足了表面硬度需求。
为了能更进一步了解本发明的特征以及技术内容,请参阅以下有关本发明的详细说明与附图,然而附图仅提供参考与说明用,并非用来对本发明加以限制。
附图说明
下面结合附图,通过对本发明的具体实施方式详细描述,将使本发明的技术方案及其它有益效果显而易见。
附图中,
图1为本发明的柔性显示装置的结构示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果,以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1,本发明首先提供一种可弯折盖板10,包括至少两非弯折区11及连接相邻两非弯折区11的弯折区12。
具体地,所述弯折区12一侧表面设有凹槽15,所述弯折区12通过该凹槽15由靠近非弯折区11的两侧向中心的厚度逐渐减小而呈拱桥结构,从而可以有效增强其自身的弯折能力。
具体地,所述可弯折盖板10为经过掺杂处理和镭射处理的玻璃板,从而改变了玻璃的原有材料结构和性质,进而提升了其表面硬度。
具体地,由于普通玻璃比较脆弱,硬度不够,且含有大量钠离子(Na+),因此本发明通过对可弯折盖板10的玻璃板进行钾离子(K+)掺杂,具体为掺杂含钾离子的如氢氧化钾(KOH)等材料,使离子半径更大的钾离子替位原有玻璃材料中的钠离子,从而既增加材料的硬度,又提高了柔韧性,进而更有利于可弯折盖板10的弯折。
具体地,本发明通过对可弯折盖板10的玻璃板进行镭射处理,使得玻璃板的材料结构从内部发生改变,提高材料韧性,从而利于可弯折盖板10的弯折,具体为在700℃以上的温度下利用波长为308nm的激光对可弯折盖板10的玻璃板进行镭射处理。
具体地,所述可弯折盖板10的非弯折区11的厚度为60-80μm。
具体地,所述凹槽15的深度为40-60μm。
优选地,为了提高该拱桥结构的稳固性,参照中国著名拱式桥建筑“宝带桥”,所述弯折区12的拱桥结构的拱深即所述凹槽15的深度取整体可弯折盖板10的厚度即非弯折区11厚度的2/3。
具体地,所述弯折区12的拱桥结构的拱长即所述凹槽15的宽度为12-20mm。
具体地,所述弯折区12的凹槽15通过切割或打磨制作形成。
本发明的可弯折盖板10,通过在对应弯折区12设置凹槽15,使弯折区12呈拱桥式结构,从而可以有效增强弯折能力,并且通过采用经过掺杂处理和镭射处理的玻璃板材料,改变玻璃材料的原有结构和性质,从而可以大幅提升表面硬度,进而可以相应提高柔性显示装置的弯折能力以及表面硬度,打破现有柔性显示装置“硬不能折,折不能硬”的矛盾,在提升柔性显示装置弯折能力的同时满足客户的触摸需求。
如图1所示,基于上述的可弯折盖板10,本发明还提供一种柔性显示装置,包括柔性显示面板20、设于所述柔性显示面板20上的如上所述的可弯折盖板10以及位于所述柔性显示面板20远离可弯折盖板10一侧对所述柔性显示面板20进行支撑的中框30。其中,所述可弯折盖板10的具体技术特征与上述实施例相同,在此不再赘述。
具体地,所述凹槽15设置在所述可弯折盖板10靠近所述柔性显示面板20的一侧表面。
具体地,所述柔性显示面板20为OLED显示面板,具体包括柔性衬底基板、设于所述柔性衬底基板上的TFT层、设于所述TFT层上的OLED器件层、及设于所述柔性衬底基板、TFT层及OLED器件层上且完全覆盖OLED器件层的薄膜封装层(未图示)。
具体地,所述柔性显示装置还包括设置于柔性显示面板20与可弯折盖板10之间的触控功能层及偏光片(未图示)。
本发明的柔性显示装置,采用上述的可弯折盖板10,该可弯折盖板10在对应弯折区12设有凹槽15,使弯折区12呈拱桥式结构,从而可以有效增强弯折能力,并且该可弯折盖板10采用经过掺杂处理和镭射处理的玻璃板材料,改变玻璃材料的原有结构和性质,从而可以大幅提升表面硬度,进而可以相应提高柔性显示装置的弯折能力以及表面硬度,打破现有柔性显示装置“硬不能折,折不能硬”的矛盾,在提升柔性显示装置弯折能力的同时满足客户的触摸需求。
综上所述,本发明的可弯折盖板,通过在对应弯折区设置凹槽,使弯折区呈拱桥式结构,从而可以有效增强弯折能力,并且通过采用经过掺杂处理和镭射处理的玻璃板材料,改变玻璃材料原有结构和性质,从而可以大幅提升表面硬度,进而可以相应提高柔性显示装置的弯折能力以及表面硬度,打破现有柔性显示装置“硬不能折,折不能硬”的矛盾,在提升柔性显示装置弯折能力的同时满足了客户的触摸需求。本发明的柔性显示装置,采用上述的可弯折盖板,在提升弯折能力的同时也可满足了表面硬度需求。
以上所述,对于本领域的普通技术人员来说,可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形,而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

1.一种可弯折盖板(10),其特征在于,包括至少两非弯折区(11)及连接相邻两非弯折区(11)的弯折区(12);
所述弯折区(12)一侧表面设有凹槽(15),所述弯折区(12)通过该凹槽(15)由靠近非弯折区(11)的两侧向中心的厚度逐渐减小而呈拱桥结构;
所述可弯折盖板(10)为经过掺杂处理和镭射处理的玻璃板。
2.如权利要求1所述的可弯折盖板(10),其特征在于,所述掺杂处理指的是钾离子掺杂处理。
3.如权利要求1所述的可弯折盖板(10),其特征在于,所述镭射处理指的是在700℃以上的温度下利用波长为308nm的激光所进行的镭射处理。
4.如权利要求1所述的可弯折盖板(10),其特征在于,所述非弯折区(11)的厚度为60-80μm。
5.如权利要求1所述的可弯折盖板(10),其特征在于,所述凹槽(15)的深度为40-60μm。
6.如权利要求1所述的可弯折盖板(10),其特征在于,所述凹槽(15)的深度为所述非弯折区(11)的厚度的2/3。
7.如权利要求1所述的可弯折盖板(10),其特征在于,所述凹槽(15)的宽度为12-20mm。
8.一种柔性显示装置,其特征在于,包括柔性显示面板(20)及设于所述柔性显示面板(20)上的如权利要求1-7中任一项所述的可弯折盖板(10);
其中,所述凹槽(15)设置在所述可弯折盖板(10)靠近所述柔性显示面板(20)的一侧表面。
9.如权利要求8所述的柔性显示装置,其特征在于,还包括位于所述柔性显示面板(20)远离可弯折盖板(10)一侧对所述柔性显示面板(20)进行支撑的中框(30)。
10.如权利要求8所述的柔性显示装置,其特征在于,所述柔性显示面板(20)为OLED显示面板。
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