WO2023138359A1 - 支撑板及显示装置 - Google Patents
支撑板及显示装置 Download PDFInfo
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- WO2023138359A1 WO2023138359A1 PCT/CN2023/070189 CN2023070189W WO2023138359A1 WO 2023138359 A1 WO2023138359 A1 WO 2023138359A1 CN 2023070189 W CN2023070189 W CN 2023070189W WO 2023138359 A1 WO2023138359 A1 WO 2023138359A1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating 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
- G09F9/301—Indicating 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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present disclosure relates to the field of display technology, in particular to a support plate and a display device.
- the display screens of various display devices are becoming larger and larger. This is because larger display screens can provide users with rich information, improve the efficiency of man-machine communication, and can bring better user experience.
- the size of the body of the display device will also increase correspondingly, which will cause the problem of inconvenient carrying and storage, which restricts the expansion of the display screen.
- Folding display devices relying on flexible display screens emerged as the times require. When they are in a folded state, they have a smaller area and are easy to carry for users; when they are in a flat state, they have a larger display area and better visual experience. Therefore, the foldable display device better balances the miniaturization of the body and the enlargement of the display screen, and has become a development trend.
- an embodiment of the present disclosure provides a support plate for supporting a flexible display module.
- the support plate includes a bending area, and the bending area includes a plurality of hollow patterns arranged in an array. There are joints between two adjacent hollow patterns in a row, and the joints in at least three adjacent rows are staggered in the column direction.
- the bending area further includes: a groove, and the groove is located at least part of the row gaps of the hollow pattern.
- every three adjacent rows of the hollow patterns form a group, and the grooves are located at gaps between the groups of the hollow patterns.
- all the connecting parts are arranged staggered in the column direction.
- every adjacent n (n ⁇ 3 and n is an integer) rows of the hollow pattern is a cycle, and the joints in the same cycle are staggered in the column direction.
- the lengths of the connecting parts in the row direction are the same, and the lengths of the hollow patterns between any two adjacent connecting parts in a row are the same in the row direction.
- the lengths of adjacent joints in the column direction are different along the row direction, and the lengths of the hollow patterns between any two adjacent joints in a row are different in the row direction.
- the hollow pattern includes an end portion, the end portion is arranged in contact with the connecting portion, and the contact surface between the end portion and the connecting portion is an arc surface.
- the end portions on both sides of the same connecting portion have the same shape.
- all the ends have the same shape.
- the shapes of the ends of the odd rows are the same, the shapes of the ends of the even rows are the same, and the shapes of the ends of the odd rows are different from the shapes of the ends of the even rows.
- the end portions on both sides of the same connecting portion have different shapes.
- the hollow pattern further includes an extension part, the extension part is integrally provided with the end part, and the extension part is located on the side of the end part away from the connecting part, and the width of the extension part along the column direction is less than or equal to the maximum width of the end part along the column direction.
- the shape of the end portion is drop-shaped, U-shaped or capsule-shaped.
- the edges extending along the column direction of the bending area are arranged discontinuously.
- the extending direction of the hollow pattern is parallel to the bending axis of the bending region.
- the support plate further includes a non-bending area, and the non-bending area is located on both sides of the bending area parallel to the bending axis.
- an embodiment of the present disclosure provides a display device, including: a flexible display module and a support plate, the support plate is the above-mentioned support plate provided by the embodiment of the present disclosure, and the support plate is attached to the opposite side of the display side of the flexible display module.
- FIG. 1 is a schematic diagram of a support plate provided by an embodiment of the present disclosure in a folded state
- FIG. 2 is a schematic diagram of a support plate provided by an embodiment of the present disclosure in an unfolded state
- Fig. 3 is a schematic structural diagram of a bending area in a support plate provided by an embodiment of the present disclosure
- Fig. 4 is along the sectional view of I-I' in Fig. 3;
- Fig. 5 is a sectional view along II-II' among Fig. 3;
- Fig. 6 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 7 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 8 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 9 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 10 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 11 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 12 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 13 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- Fig. 14 is another structural schematic diagram of the bending area in the support plate provided by the embodiment of the present disclosure.
- FIG. 15 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
- Fig. 16 is a schematic structural diagram of a sub-pixel in the flexible display module provided by an embodiment of the present disclosure.
- FIG. 17 is another schematic structural diagram of a sub-pixel in the flexible display module provided by an embodiment of the present disclosure.
- a support plate is usually arranged on the opposite side of the display side of the flexible display module, and multiple hollow patterns are arranged in the bending area of the support plate to meet the bending performance of the folding display device.
- the arrangement of the hollow patterns of the odd rows is the same, the arrangement of the hollow patterns of the even rows is the same, and the arrangement of the hollow patterns of the odd rows is different from that of the even rows, which makes the first m (m is a positive integer) connecting portion (located between two hollow patterns in the same row) in the odd row be located on the same straight line, and the m (m is a positive integer) connecting portion starting from the even row is also located on the same straight line.
- the thickness of the glue is increased on the surface of the hollow pattern in the bending area or the surface of the support plate with the hollow pattern is covered with a support plate without the hollow pattern to cover the film printing, but these two solutions increase the weight of the folding display device, which cannot meet the development trend of pursuing light and thin.
- an embodiment of the present disclosure provides a support plate (such as a stainless steel plate, SUS) for supporting a flexible display module. As shown in FIGS.
- the connecting parts 102 in at least three adjacent rows are arranged staggered in the column direction Y, thereby reducing the probability that the connecting parts 102 are located on the same straight line, thereby facilitating the uniform distribution of bending stress, and effectively solving the stamping problem.
- the present disclosure does not need to increase the thickness of the glue in the related art or provide an additional support plate, therefore, the present disclosure does not increase the weight of the product, which is beneficial to realize a light and thin design.
- the bending area BA may further include: a groove 103 located at least part of the row gap G of the hollow pattern 101 .
- the existence of the groove 103 provides a dispersing channel for the bending stress at the connecting portion 102 , thereby avoiding the excessive concentration of the bending stress at the connecting portion 102 , thus effectively solving the stamping problem.
- the thickness h1 of the support plate at the groove 103 is smaller than the thickness h2 of the support plate outside the groove 103 and the hollow pattern 101, therefore, the setting of the groove 103 can reduce the overall weight of the support plate, meeting the development trend of light and thin.
- the depth h3 of the groove 103 can be less than or equal to half of the thickness h2 of the support plate outside the groove 103 and the hollow pattern 101, that is, the thickness h1 of the support plate outside the groove 103 is greater than or equal to half of the thickness h2 of the support plate outside the groove 103 and the hollow pattern 101, so that the modulus of the support plate can be guaranteed while effectively dispersing the bending stress.
- the groove 103 may run through the bending area BA in the row direction X, or, as shown in FIG. 8 and FIG. 9 , the groove 103 may not run through the bending area BA in the row direction X, which is not specifically limited here.
- every three adjacent rows of hollow patterns 101 form a group, and the grooves 103 are located at the group gap G' of the hollow patterns 101 . Since the connecting parts 102 in at least three rows of the present disclosure are arranged staggered in the column direction Y, the area of at least three rows will not be stamped due to bending stress. Therefore, the groove 103 can be arranged at the group gap G' of each adjacent three rows of hollow patterns 101 to further disperse the bending stress and reduce the risk of stamping.
- the connecting portions 102 in the remaining rows are located on the same straight line, the bending stress at the connecting portion 102 in each adjacent three rows can be effectively diffused to the adjacent grooves 103 on both sides, making the bending stress distribution more uniform, thus further reducing the probability of imprinting.
- it is not limited to every three adjacent rows of hollow patterns 101 as a group, and the number of rows of hollow patterns 101 in each group can also be flexibly set according to actual needs.
- all the connecting parts 102 are arranged staggered in the column direction Y, so that the connecting parts 102 are evenly distributed in the bending area BA, thereby achieving a more uniform distribution of bending stress.
- each adjacent n (n ⁇ 3 and n is an integer) rows of hollow patterns 101 is a cycle, and the joints 102 in the same cycle are staggered in the column direction Y.
- every 5 adjacent rows of hollow patterns 101 constitutes a cycle, and the connecting portions 102 in the same cycle are arranged staggered in the column direction Y. Since the connecting portions 102 are staggered in the column direction Y in the same cycle, the bending stress in the same cycle can be evenly distributed.
- setting more than three adjacent rows of hollow patterns 101 as a cycle can have enough space to buffer the bending stress, so that the bending stress distribution is more uniform.
- the length L1 of the connecting parts 102 in the row direction X is the same, and the length L2 of the hollow pattern 101 in the row direction X between any two adjacent connecting parts 102 in the row is the same, so as to facilitate the staggered arrangement of the connecting parts 102.
- the length L1 of the adjacent connecting parts 102 along the row direction X in the column direction Y is different, and the length L2 of the hollow pattern 101 between any two adjacent connecting parts 102 in the same row is different in the row direction X, so that the staggered arrangement of the connecting parts 102 can be realized.
- FIG. 3 , FIG. 6 to FIG. 11 only schematically show partial enlarged views of the bending area BA, so only one connecting portion 102 is shown in a row, and in actual products, there may be multiple connecting portions 102 arranged in a staggered manner in each row of the bending area BA.
- the hollow pattern 101 includes an end portion 1011, which is arranged in contact with the connecting portion 102, and the contact surface between the end portion 1011 and the connecting portion 102 is an arc surface.
- the curved surface is more conducive to dispersing bending stress and avoiding stamping caused by bending stress concentration.
- the length L 1 of the connecting portion 102 in the row direction X can be defined as the distance between the two ends 1011 in contact with the connecting portion 102 in the row direction X.
- the end portions 1011 on both sides of the same connecting portion 102 have the same shape, which not only facilitates the manufacture of the hollow pattern 101, but also helps to ensure that the bending stress on both sides of the connecting portion 102 is evenly distributed.
- all end portions 1011 can be set to have the same shape; or, as shown in FIG. 6 to FIG.
- the modulus of the support plate can also be adjusted by setting the end portions 1011 on both sides of the same connecting portion 102 to have different shapes.
- the modulus of the support plate can also be adjusted by adjusting the length and density of the hollow pattern 101 , which is not limited here.
- the hollow pattern 101 may further include an extension part 1012, the extension part 1012 is integrally provided with the end part 1011, and the extension part 1012 is located on the side of the end part 1011 away from the connecting part 102, and the width W1 of the extension part 1012 along the column direction Y is less than or equal to the maximum width W2 of the end part 1011 along the column direction Y, so that It is beneficial to distribute the bending stress more uniformly.
- the shape of the end portion 1011 can be drop-shaped, U-shaped, or capsule-shaped, which is convenient for manufacture and can effectively adjust the modulus of the support plate.
- the shape of the end portion 1011 may also be other shapes known to those skilled in the art, which are not specifically limited here.
- the edge F extending along the column direction Y of the bending area BA is discontinuously arranged.
- the edge F of the bending area BA extending along the column direction Y is disconnected at the hollow pattern 101, and is continuously provided at the row gap G of the hollow pattern 101, so that the entire edge F of the bending area BA extending along the column direction Y is provided discontinuously.
- the discontinuously arranged edge F of the bending area BA increases the elasticity of the bending area BA, which is beneficial to improving the resilience and smoothness of the bending area BA when unfolded.
- the extension direction of the hollow pattern 101 (equivalent to the row direction X) is parallel to the bending axis S of the bending area BA, so that the support plate is easy to bend when folded, and can quickly rebound to a flat state when unfolded.
- the support plate may further include a non-bending area UBA, which is located on both sides of the bending area BA parallel to the bending axis S, so that the folding performance of the support plate can be satisfied through the bending area BA, and the hollow pattern 101 and groove 103 may not be provided in the non-bending area UBA, so that the support performance of the support plate can be satisfied through the non-bending area UBA.
- blind holes may also be provided in the non-bending area UBA.
- the areas of the non-bending areas UBA on both sides may be the same, that is, the bending area BA is located in the central area of the support plate.
- an embodiment of the present disclosure provides a display device. Since the problem-solving principle of the display device is similar to that of the above-mentioned support plate, the implementation of the display device provided by the embodiment of the present disclosure can refer to the implementation of the above-mentioned support plate provided by the embodiment of the present disclosure, and repeated descriptions will not be repeated.
- a display device provided by an embodiment of the present disclosure includes: a support plate 001 and a flexible display module 002, the support plate 001 is the above-mentioned support plate 001 provided by the embodiment of the present disclosure, and the support plate 001 is attached to the opposite side of the display side of the flexible display module 002.
- the support plate 001 is adhered to the side opposite to the display side of the flexible display module 002 through the adhesive layer 003 .
- the adhesive layer 003 can be arranged on the whole surface.
- the adhesive layer 003 can also be arranged only in the non-bending area UBA, that is, the adhesive layer 003 is not provided in the bending area BA. Since the support plate 001 is hard, the support plate 001 is only bonded to the flexible display module 002 in the non-bending area UBA. Module 002 plays a better supporting role.
- the above-mentioned adhesive layer 003 can be selected from ultraviolet adhesive, double-sided adhesive, pressure-sensitive adhesive or hot-melt adhesive.
- ultraviolet radiation can be used to reduce the viscosity of the UV-viscosity-reducing adhesive, so as to remove the support plate 001 .
- the support plate 001 can be directly torn off, and the support plate 001 can be easily removed.
- the adhesive layer 003 is pressure-sensitive adhesive
- the viscosity of the pressure-sensitive adhesive can be reduced by changing the pressure, so as to remove the support plate 001 .
- the adhesive layer 003 is hot melt adhesive
- the viscosity of the hot melt adhesive can be reduced by heating, so as to remove the support plate 001 .
- the adhesive layer 003 can also use other materials (such as foam glue), which is not limited here.
- the flexible display module 002 may include: a pixel driving circuit 201 (only the driving transistor DTFT is shown in the figure), a light emitting device 202 (which may be OLED, QLED, etc.), an encapsulation layer 203 and a circular polarizer 204; wherein, the pixel driving circuit 201 is electrically connected to the light emitting device 202 to drive the light emitting device 202 to perform light-emitting display; the encapsulation layer 203 includes a stacked first inorganic encapsulation layer CVD1, the organic encapsulation layer IJP and the second inorganic encapsulation layer CVD2 can effectively prevent water and oxygen from corroding the light-emitting material layer EL in the light-emitting device 202, and improve the life of the light-emitting device 202; the circular polarizer 204 includes a linear polarizer layer
- the color filter layer 204' includes a black matrix 2041 and a plurality of color resists 2042 separated by the black matrix 2041.
- the color resists 2042 may include a red color resist R, a green color resist G and a blue color resist B.
- the flexible display module 002 may further include a base substrate 205, a buffer layer 206, a gate insulating layer 207, an interlayer dielectric layer 208, a first planar layer 209, a transfer electrode 210, a second planar layer 211, a pixel defining layer 212, a support layer 213, a third planar layer 214, and a protective cover 215 (such as an ultra-thin glass cover), etc.
- a base substrate 205 a buffer layer 206, a gate insulating layer 207, an interlayer dielectric layer 208, a first planar layer 209, a transfer electrode 210, a second planar layer 211, a pixel defining layer 212, a support layer 213, a third planar layer 214, and a protective cover 215 (such as an ultra-thin glass cover), etc.
- a protective cover 215 such as an ultra-thin glass cover
- the above-mentioned display device may be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, a smart watch, a fitness wristband, a personal digital assistant, and the like.
- the display device may include but not limited to: a radio frequency unit, a network module, an audio output & input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply.
- the above-mentioned structure does not constitute a limitation on the above-mentioned display device provided by the embodiment of the present disclosure.
- the above-mentioned display device provided by the embodiment of the present disclosure may include more or less of the above-mentioned components, or combine certain components, or arrange different components.
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Abstract
一种支撑板(001)及具有该支撑板(001)的显示装置。支撑板(001)用于支撑柔性显示模组(002),支撑板(001)包括弯折区(BA),弯折区(BA)包括阵列排布的多个镂空图案(101),同行中相邻两个镂空图案(101)之间具有衔接部(102),至少相邻三行中的衔接部(102)在列方向上错开设置,有利于弯折应力的均匀分布。
Description
相关申请的交叉引用
本申请要求在2022年01月21日提交中国专利局、申请号为202210073890.3、申请名称为“支撑板及显示装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本公开涉及显示技术领域,尤其涉及一种支撑板及显示装置。
随着电子产品的更新换代,各种显示装置(如手机、平板电脑等)的显示屏幕变得越来越大,这是由于更大的显示屏幕能给使用者提供丰富的信息,提高人机交流的效率,并且能够带来更好的使用体验。但是,随着显示屏幕的增大,显示装置的机体外形尺寸也会相应的增大,会带来携带、存放不方便的问题,这就制约了显示屏幕的扩大。依赖于柔性显示屏的折叠显示装置应运而生,其处于折叠状态时,面积较小,便于用户携带;处于展平状态时,显示面积较大,视觉体验效果更好。因此,折叠显示装置较好的兼顾了机体的小型化与显示屏幕的大屏化,成为一个发展趋势。
发明内容
本公开实施例提供的支撑板及显示装置,具体方案如下:
一方面,本公开实施例提供了一种支撑板,用于支撑柔性显示模组,所述支撑板包括弯折区,所述弯折区包括阵列排布的多个镂空图案,同行中相邻两个所述镂空图案之间具有衔接部,至少相邻三行中的所述衔接部在列方向上错开设置。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述弯折区还包括:凹槽,所述凹槽位于所述镂空图案的至少部分行间隙处。
在一些实施例中,在本公开实施例提供的上述支撑板中,每相邻三行所述镂空图案为一组,所述凹槽位于所述镂空图案的组间隙处。
在一些实施例中,在本公开实施例提供的上述支撑板中,全部所述衔接部在列方向上错开设置。
在一些实施例中,在本公开实施例提供的上述支撑板中,每相邻n(n≥3且n为整数)行所述镂空图案为一循环周期,同一循环周期内的各所述衔接部在列方向上错开设置。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述衔接部在行方向上的长度相同,且同行中任意相邻两个所述衔接部之间的所述镂空图案在行方向上的长度相同。
在一些实施例中,在本公开实施例提供的上述支撑板中,在列方向上相邻所述衔接部沿行方向的长度不同,且同行中任意相邻两个所述衔接部之间的所述镂空图案在行方向上的长度不同。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述镂空图案包括端部,所述端部与所述衔接部接触设置,所述端部与所述衔接部的接触面为弧面。
在一些实施例中,在本公开实施例提供的上述支撑板中,同一所述衔接部两侧的所述端部形状相同。
在一些实施例中,在本公开实施例提供的上述支撑板中,全部所述端部的形状相同。
在一些实施例中,在本公开实施例提供的上述支撑板中,奇数行所述端部的形状相同,偶数行所述端部的形状相同,且奇数行所述端部的形状与偶数行所述端部的形状不同。
在一些实施例中,在本公开实施例提供的上述支撑板中,同一所述衔接部两侧的所述端部形状不同。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述镂空图案还包括延伸部,所述延伸部与所述端部一体设置,且所述延伸部位于所述端部远离所述衔接部的一侧,所述延伸部沿列方向的宽度小于或等于所述端部沿列方向的最大宽度。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述端部的形状为水滴型、U字型或胶囊型。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述弯折区沿列方向延伸的边缘非连续设置。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述镂空图案的延伸方向平行于所述弯折区的弯折轴。
在一些实施例中,在本公开实施例提供的上述支撑板中,所述支撑板还包括非弯折区,所述非弯折区位于所述弯折区平行于弯折轴的两侧。
另一方面,本公开实施例提供了一种显示装置,包括:柔性显示模组和支撑板,所述支撑板为本公开实施例提供的上述支撑板,且所述支撑板贴合于所述柔性显示模组的显示侧的相对侧。
图1为本公开实施例提供的支撑板在折叠状态下的一种示意图;
图2为本公开实施例提供的支撑板在展开状态下的示意图;
图3为本公开实施例提供的支撑板中弯折区的一种结构示意图;
图4为沿图3中I-I’的截面图;
图5为沿图3中II-II’的截面图;
图6为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图7为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图8为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图9为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图10为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图11为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图12为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图13为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图14为本公开实施例提供的支撑板中弯折区的又一种结构示意图;
图15为本公开实施例提供的显示装置的结构示意图;
图16为本公开实施例提供的柔性显示模组中一个子像素的一种结构示意图;
图17为本公开实施例提供的柔性显示模组中一个子像素的又一种结构示意图。
为使本公开实施例的目的、技术方案和优点更加清楚,下面将结合本公开实施例的附图,对本公开实施例的技术方案进行清楚、完整地描述。需要注意的是,附图中各图形的尺寸和形状不反映真实比例,目的只是示意说明本公开内容。并且自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。
除非另作定义,此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同,而不排除其他元件或者物件。“内”、“外”、“上”、“下”等仅用于表示相对位置关系,当被描述对象的绝对位置改变后,则该相对位置关系也可能相应地改变。
相关技术的折叠显示装置中,通常采用在柔性显示模组的显示侧的相对侧设置支撑板,并通过在支撑板的弯折区设置多个镂空图案(Pattern)来满足折叠显示装置的弯折性能。然而,由于相关技术中奇数行的镂空图案排布方式 相同,偶数行的镂空图案排布方式相同,奇数行的镂空图案排布方式与偶数行的镂空图案排布方式不同,这就使得奇数行中自行首起的第m(m为正整数)个衔接部(位于同行中两个镂空图案之间)位于同一条直线上,且偶数行中自行首起的第m(m为正整数)个衔接部也位于同一条直线上。在弯折过程中,弯折应力会在上述直线上聚集,无法释放,而产生膜印。相关技术中,通过在弯折区的镂空图案表面增加胶的厚度或者在具有镂空图案的支撑板表面覆盖一层不具备镂空图案的支撑板来掩盖膜印,但这两种方案均增加了折叠显示装置的重量,不能满足追求轻薄化的发展趋势。
为了解决相关技术中存在的上述技术问题,本公开实施例提供了一种支撑板(例如不锈钢板,SUS),用于支撑柔性显示模组,如图1至图5所示,支撑板包括弯折区BA,弯折区BA包括阵列排布的多个镂空图案101,同行中相邻两个镂空图案101之间具有衔接部102,至少相邻三行中的衔接部102在列方向Y上错开设置。
在本公开实施例提供的上述支撑板中,通过改进镂空图案101的排布方式,使得至少相邻三行中的衔接部102在列方向Y上错开设置,从而降低了衔接部102位于同一直线上的概率,由此利于弯折应力的均匀分布,能够有效解决模印问题。并且,本公开无需增加相关技术中胶的厚度或额外设置一个支撑板,因此,本公开不会增加产品重量,利于实现轻薄化设计。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3至图5所示,弯折区BA还可以包括:凹槽103,该凹槽103位于镂空图案101的至少部分行间隙G处。凹槽103的存在,为衔接部102处的弯折应力提供了一个分散通道,从而避免了弯折应力在衔接部102处过于集中,因此,可有效解决模印问题。另外,应当理解的是,如图4和图5所示,支撑板在凹槽103处的厚度h
1小于支撑板在凹槽103和镂空图案101之外的厚度h
2,因此,凹槽103的设置可以减小支撑板的整体重量,满足了轻薄化的发展趋势。可选地,凹槽103的深度h
3可以小于等于支撑板在凹槽103和镂空图案101之外的厚度h
2的一半,即支撑板在凹槽103的厚度h
1大于等于支撑板在凹槽103 和镂空图案101之外的厚度h
2的一半,这样在有效分散弯折应力的同时可保证支撑板的模量。可选地,如图3、图6、图7和图10所示,凹槽103在行方向X上可以贯穿弯折区BA,或者,如图8和图9所示,凹槽103在行方向X上可以不贯穿弯折区BA,在此不做具体限定。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图6至图10所示,每相邻三行镂空图案101为一组,凹槽103位于镂空图案101的组间隙G’处。由于本公开至少三行中的衔接部102在列方向Y上错开设置,至少三行的区域不会因弯折应力而产生模印,因此,可将凹槽103设置在每相邻三行镂空图案101的组间隙G’处,进一步分散弯折应力,降低产生模印的风险。另外,即使三行之外的其余行中衔接部102位于同一条直线上,因每相邻三行中衔接部102处的弯折应力可有效扩散至两侧相邻的凹槽103处,使得弯折应力分布更加均匀,因此,进一步降低了发生模印的概率。当然,在具体实施时,并不局限于每相邻三行镂空图案101为一组,也可根据实际需要灵活设置每组内镂空图案101的行数。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6和图7所示,全部衔接部102在列方向Y上错开设置,使得衔接部102在弯折区BA内均匀分布,由此实现了弯折应力更加均匀地分布。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图8至图10所示,每相邻n(n≥3且n为整数)行镂空图案101为一循环周期,同一循环周期内的各衔接部102在列方向Y上错开设置。示例性地,在图8至图10中,每相邻5行镂空图案101为一循环周期,同一循环周期内的各衔接部102在列方向Y上错开设置。由于同一循环周期内各衔接部102在列方向Y上错开设置,因此,同一循环周期内的弯折应力可以均匀分布。而设置每相邻3行以上镂空图案101为一循环周期,可以有足够的空间缓冲弯折应力,使得弯折应力分布更加均匀。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图8至图10所示,衔接部102在行方向X上的长度L
1相同,且同行中任意相邻两个衔接 部102之间的镂空图案101在行方向X上的长度L
2相同,以利于实现衔接部102的错开设置。可选地,如图11所示,还可以通过设置在列方向Y上相邻衔接部102沿行方向X的长度L
1不同,且同行中任意相邻两个衔接部102之间的镂空图案101在行方向X上的长度L
2不同,实现衔接部102的错开设置。
需要说明的是,图3、图6至图11中仅示意性给出了弯折区BA的局部放大图,因此一行中仅示出了一个衔接部102,在实际产品中,弯折区BA的每行中均可以有多个错开设置的衔接部102。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6至图11所示,镂空图案101包括端部1011,该端部1011与衔接部102接触设置,端部1011与衔接部102的接触面为弧面。弧面更利于分散弯折应力,避免弯折应力集中而造成模印。上述衔接部102在行方向X上的长度L
1可定义为在行方向X上与衔接部102接触的两个端部1011之间的距离。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6至图11所示,同一衔接部102两侧的端部1011形状相同,这样不但便于制作镂空图案101,而且利于保证衔接部102两侧的弯折应力均衡分布。可选地,如图3、图9至图11所示,可以设置全部端部1011的形状相同;或者,如图6至图8所示,还可以设置奇数行端部1011的形状相同,偶数行端部1011的形状相同,且奇数行端部1011的形状与偶数行端部1011的形状不同。通过上述形状的端部1011组合,可以有效调节支撑板的模量,以满足不同的弯折需求。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图12至图14所示,还可以通过设置同一衔接部102两侧的端部1011形状不同来调节支撑板的模量。可选地,在具体实施时,也可以通过调节镂空图案101的长度和密度,实现对支撑板模量的调节,在此不做限定。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6和图7所示,镂空图案101还可以包括延伸部1012,延伸部1012与端部1011一体设置,且延伸部1012位于端部1011远离衔接部102的一侧,延伸部1012 沿列方向Y的宽度W
1小于或等于端部1011沿列方向Y的最大宽度W
2,从而利于弯折应力的分散更均匀。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6至图14所示,端部1011的形状可以为水滴型、U字型或胶囊型等便于制作且可有效调节支撑板模量的形状。当然,在具体实施时,端部1011的形状也可以为本领域技术人员公知的其他形状,在此不做具体限定。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6至图14所示,弯折区BA沿列方向Y延伸的边缘F非连续设置。具体地,弯折区BA沿列方向Y延伸的边缘F在镂空图案101处断开设置,在镂空图案101的行间隙G处连续设置,如此则使得弯折区BA沿列方向Y延伸的边缘F整体是非连续设置的。非连续设置的弯折区BA边缘F增大了弯折区BA的弹性,利于提高弯折区BA在展开的回弹性和平整性。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图3、图6至图14所示,镂空图案101的延伸方向(相当于行方向X)平行于弯折区BA的弯折轴S,以使得支撑板在折叠时易于弯折、并在展开时可快速回弹至平整状态。
在一些实施例中,在本公开实施例提供的上述支撑板中,如图1和图2所示,支撑板还可以包括非弯折区UBA,非弯折区UBA位于弯折区BA平行于弯折轴S的两侧,以通过弯折区BA使得支撑板的折叠性能得到满足,并且非弯折区UBA可以不设置镂空图案101和凹槽103,从而可通过非弯折区UBA使得支撑板的支撑性能得到满足。在一些实施例中,为了满足减重需求,实现轻量化,也可以在非弯折区UBA设置盲孔。可选地,两侧非弯折区UBA的面积可以相同,即弯折区BA位于支撑板的中心区域。
基于同一发明构思,本公开实施例提供了一种显示装置,由于该显示装置解决问题的原理与上述支撑板解决问题的原理相似,因此,本公开实施例提供的该显示装置的实施可以参见本公开实施例提供的上述支撑板的实施,重复之处不再赘述。
具体地,本公开实施例提供的一种显示装置,如图15所示,包括:支撑板001和柔性显示模组002,支撑板001为本公开实施例提供的上述支撑板001,且支撑板001贴合于柔性显示模组002的显示侧的相对侧。可选地,支撑板001通过粘合层003贴合于柔性显示模组002的显示侧的相对侧。粘合层003可以整面设置,可选地,为了使粘合层003的制作工艺较简单,并保证粘合层003的平整性较好,也可以将粘合层003仅设置在非弯折区UBA,即在弯折区BA不设置粘合层003,由于支撑板001为硬质,将支撑板001仅在非弯折区UBA与柔性显示模组002贴合,在弯折区BA支撑板001仍然能够对柔性显示模组002起到较好的支撑作用。
另外,在支撑板001与柔性显示模组002的组装工艺过程,有可能出现较大的组装偏差,此时,为降低废品率,需要将支撑板001去除后,与柔性显示模组002重新组装。基于此,上述粘合层003可以选用紫外减粘胶、双面胶、压敏胶或热熔胶等。在粘合层003为紫外减粘胶时,可以采用紫外光照射的方式,降低紫外减粘胶的粘性,以便去除支撑板001。在粘合层003为双面胶时,可以直接将支撑板001撕除,可以较容易地去除支撑板001。在粘合层003为压敏胶时,可以通过改变压力的方式降低压敏胶的粘性,以便去除支撑板001。在粘合层003为热熔胶时,可以通过加热的方式,降低热熔胶的粘性,以便去除支撑板001。此外,粘合层003也可以采用其他材料(例如泡棉胶),此处不做限定。
在一些实施例中,在本公开实施例提供的上述显示装置中,如图16所示,柔性显示模组002可以包括:像素驱动电路201(图中仅示出了驱动晶体管DTFT)、发光器件202(可以为OLED、QLED等)、封装层203和圆偏光片204;其中,像素驱动电路201与发光器件202电连接,以驱动发光器件202进行发光显示;封装层203包括层叠设置的第一无机封装层CVD1、有机封装层IJP和第二无机封装层CVD2,可以有效避免水氧对发光器件202中发光材料层EL的腐蚀,提高发光器件202的寿命;圆偏光片204包括线偏光层和四分之一波片层,可以降低发光器件202的阳极A/阴极C、以及像素驱动电路 201的金属层对环境光的反射,在一些实施例中,如图17所示,还可以采用彩膜层204’减少发光器件202的阳极A/阴极C、以及像素驱动电路201的金属层对环境光的反射,并且,相较于圆偏光片204,彩膜层204’对发光器件202的发射光线的透过率更大。可选地,彩膜层204’包括黑矩阵2041、以及被黑矩阵2041隔开的多个色阻2042,色阻2042可以包括红光色阻R、绿光色阻G和蓝光色阻B。此外,如图16和图17所示,柔性显示模组002还可以包括衬底基板205、缓冲层206、栅绝缘层207、层间介电层208、第一平坦层209、转接电极210、第二平坦层211、像素界定层212、支撑层213、第三平坦层214、以及保护盖板215(例如超薄玻璃盖板)等。对于柔性显示模组002的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的,在此不做赘述,也不应作为对本公开的限制。
在一些实施例中,本公开实施例提供的上述显示装置可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪、智能手表、健身腕带、个人数字助理等任何具有显示功能的产品或部件。该显示装置可以包括但不限于:射频单元、网络模块、音频输出&输入单元、传感器、显示单元、用户输入单元、接口单元、存储器、处理器、以及电源等部件。另外,本领域技术人员可以理解的是,上述结构并不构成对本公开实施例提供的上述显示装置的限定,换言之,在本公开实施例提供的上述显示装置中可以包括上述更多或更少的部件,或者组合某些部件,或者不同的部件布置。
显然,本领域的技术人员可以对本公开实施例进行各种改动和变型而不脱离本公开实施例的精神和范围。这样,倘若本公开实施例的这些修改和变型属于本公开权利要求及其等同技术的范围之内,则本公开也意图包含这些改动和变型在内。
Claims (18)
- 一种支撑板,用于支撑柔性显示模组,其中,所述支撑板包括弯折区,所述弯折区包括阵列排布的多个镂空图案,同行中相邻两个所述镂空图案之间具有衔接部,至少相邻三行中的所述衔接部在列方向上错开设置。
- 如权利要求1所述的支撑板,其中,所述弯折区还包括:凹槽,所述凹槽位于所述镂空图案的至少部分行间隙处。
- 如权利要求2所述的支撑板,其中,每相邻三行所述镂空图案为一组,所述凹槽位于所述镂空图案的组间隙处。
- 如权利要求1~3任一项所述的支撑板,其中,全部所述衔接部在列方向上错开设置。
- 如权利要求1~3任一项所述的支撑板,其中,每相邻n(n≥3且n为整数)行所述镂空图案为一循环周期,同一循环周期内的各所述衔接部在列方向上错开设置。
- 如权利要求1~5任一项所述的支撑板,其中,所述衔接部在行方向上的长度相同,且同行中任意相邻两个所述衔接部之间的所述镂空图案在行方向上的长度相同。
- 如权利要求1~5任一项所述的支撑板,其中,在列方向上相邻所述衔接部沿行方向的长度不同,且同行中任意相邻两个所述衔接部之间的所述镂空图案在行方向上的长度不同。
- 如权利要求1~7任一项所述的支撑板,其中,所述镂空图案包括端部,所述端部与所述衔接部接触设置,所述端部与所述衔接部的接触面为弧面。
- 如权利要求8所述的支撑板,其中,同一所述衔接部两侧的所述端部形状相同。
- 如权利要求9所述的支撑板,其中,全部所述端部的形状相同。
- 如权利要求9所述的支撑板,其中,奇数行所述端部的形状相同, 偶数行所述端部的形状相同,且奇数行所述端部的形状与偶数行所述端部的形状不同。
- 如权利要求8所述的支撑板,其中,同一所述衔接部两侧的所述端部形状不同。
- 如权利要求8~12任一项所述的支撑板,其中,所述镂空图案还包括延伸部,所述延伸部与所述端部一体设置,且所述延伸部位于所述端部远离所述衔接部的一侧,所述延伸部沿列方向的宽度小于或等于所述端部沿列方向的最大宽度。
- 如权利要求8~13任一项所述的支撑板,其中,所述端部的形状为水滴型、U字型或胶囊型。
- 如权利要求1~14任一项所述的支撑板,其中,所述弯折区沿列方向延伸的边缘非连续设置。
- 如权利要求1~15任一项所述的支撑板,其中,所述镂空图案的延伸方向平行于所述弯折区的弯折轴。
- 如权利要求1~16任一项所述的支撑板,其中,所述支撑板还包括非弯折区,所述非弯折区位于所述弯折区平行于弯折轴的两侧。
- 一种显示装置,其中,包括:柔性显示模组和支撑板,所述支撑板为如权利要求1~17任一项所述的支撑板,且所述支撑板贴合于所述柔性显示模组的显示侧的相对侧。
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