WO2021213430A1 - 显示基板及其制造方法、显示装置 - Google Patents

显示基板及其制造方法、显示装置 Download PDF

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Publication number
WO2021213430A1
WO2021213430A1 PCT/CN2021/088645 CN2021088645W WO2021213430A1 WO 2021213430 A1 WO2021213430 A1 WO 2021213430A1 CN 2021088645 W CN2021088645 W CN 2021088645W WO 2021213430 A1 WO2021213430 A1 WO 2021213430A1
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Prior art keywords
display area
pitch
area
island
pixel
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PCT/CN2021/088645
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English (en)
French (fr)
Inventor
钱昱翰
刘利宾
韩龙
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京东方科技集团股份有限公司
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Priority to US17/782,770 priority Critical patent/US20230004190A1/en
Publication of WO2021213430A1 publication Critical patent/WO2021213430A1/zh

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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • 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
    • G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • H04M1/0269—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel mounted in a fixed curved configuration, e.g. display curved around the edges of the telephone housing

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display substrate, a manufacturing method thereof, and a display device.
  • flexible display devices are developing from a two-dimensional variable direction to a three-dimensional variable form.
  • a series of openings are generally provided on the flexible substrate, divided into: the island area where the pixel is located and the bridge area where the connecting line is located, so that the display device has stretchable deformation performance.
  • the pixels are arranged in the island area, and the signal traces are arranged on the bridge area. When an external force is applied, the deformation mainly occurs in the bridge area, and the pixels in the island area basically maintain their shape.
  • the display screen of the flexible display device includes a non-stretchable display area and a stretchable display area.
  • the pixel design of the stretchable display area is compared with the pixel design of the non-stretched display area. Due to the difference in the deformation of the stretchable display area and the non-stretched display area, the pixels in the stretched area are designed as non-stretched areas.
  • the expansion of pixels can be formed by removing a certain part of the pixels based on the pixel design of the non-stretchable display area. For example, in the pixel arrangement of the non-stretchable display area, the pixels at the corresponding opening positions are removed. It is the pixel arrangement of the stretchable display area.
  • the stretchable display area when the stretchable display area is not stretched and deformed, the pixel distribution is uniform and the display brightness is uniform.
  • the uniformity of the pixel distribution is broken, and the pixel density of the stretchable display area is reduced.
  • the brightness of the stretchable display area is reduced, and the luminous brightness of the display panel in the overall stretchable display area is different from that of the non-stretchable display area.
  • a display substrate includes a non-stretchable display area and a stretchable display area.
  • the stretchable display area includes a plurality of island areas distributed in an array and separated from each other, and connecting adjacent island areas
  • a pixel unit is provided on each of the island regions, the pixel unit includes at least one pixel, and a signal wiring that electrically connects each of the pixels is provided on the bridge region;
  • the pixel pitch of the pixels in the pixel unit in the stretching direction is the reference pitch P 0
  • the pitch between two adjacent pixel units in the stretching direction is the first pitch P 1
  • the first pitch P 1 is smaller than the reference pitch P 0 .
  • the tensile deformation of the bridge region in the stretching direction is ⁇ P
  • the first distance P 1 is:
  • P 1 P 0 - ⁇ P.
  • the stretchable display area includes a uniform stretchable display area, and in the uniform stretchable display area, the stretch deformation ⁇ P of each bridge area in the stretching direction is A fixed value, the first distance P 1 is a fixed value.
  • the tensile deformation amount ⁇ P ⁇ 3%*P 0 .
  • the stretchable display area includes an unevenly stretched display area, and at least a part of the bridge area in the unevenly stretched display area has different stretch deformations in the stretch direction, and In the unevenly stretched display area, the greater the stretch deformation of the bridge area, the smaller the first pitch P 1.
  • the unevenly stretched display area is a rectangular surface in an unstretched state, and a curved surface stretched along an arc direction in a stretched state, and the curved surface includes a curved surface starting end and a curved surface At the apex end, the tensile deformation of the arc surface gradually increases from the beginning end of the arc surface to the apex end of the arc surface, and the first distance P 1 is from the beginning end of the arc surface to the apex of the arc surface The end gradually decreases.
  • the tensile deformation ⁇ P n of the n-th bridge region arranged in the first direction satisfies the following formula:
  • ⁇ P n (R n -L n )/2+(R n+1 -L n+1 )/2;
  • the first direction is the extending direction of the straight edge tangent to the starting end of the arc in the rectangular surface;
  • L is the length of the island area in the first direction;
  • R is the island area The arc length corresponding to the orthographic projection on the arc surface;
  • n is an integer greater than or equal to 1.
  • the pixel unit on each island area includes at least two pixels.
  • the tensile deformation of the island area is pre-compensated according to the following formula:
  • each pixel unit on the island region includes at least four pixels, and each pixel includes at least three sub-pixels.
  • the present disclosure also provides a display device including the display substrate as described above.
  • the present disclosure also provides a manufacturing method of a display substrate, including:
  • a hole is opened on the base substrate to form a non-stretchable display area and a stretchable display area, and pixels are formed on the base substrate, wherein the stretchable display area includes arrays distributed and separated from each other.
  • a plurality of separated island regions and a plurality of bridge regions connecting adjacent island regions, each of the island regions is provided with a pixel unit, the pixel unit includes at least one pixel, and the bridge region
  • the pitch is a first pitch P 1 , and the first pitch P 1 is smaller than the reference pitch P 0 .
  • forming pixels on the base substrate specifically includes:
  • the tensile deformation amount ⁇ P of the stretchable display area is estimated, and the first pitch P 1 is determined according to the tensile deformation amount ⁇ P.
  • the estimating the tensile deformation amount ⁇ P of the stretchable display area, and determining the first pitch P 1 according to the tensile deformation amount ⁇ P specifically includes:
  • the first distance P 1 is determined according to the following formula:
  • P 1 P 0 - ⁇ P.
  • the stretchable display area includes a uniform stretchable display area, and within the uniform stretchable display area, the stretch of each bridge area in the stretching direction is determined.
  • the amount of extension ⁇ P is a fixed value
  • the first distance P 1 is a fixed value.
  • the stretchable display area includes an unevenly stretched display area, and at least a part of the bridge area in the unevenly stretched display area has different stretch deformations in the stretch direction. , unevenness in the drawing display area, the greater the amount of tensile deformation of the bridge area, the smaller the first pitch P 1.
  • the unevenly stretched display area is a rectangular surface in an unstretched state, and a curved surface stretched along an arc direction in a stretched state, and the curved surface includes a curved surface starting end and a curved surface At the apex end, the tensile deformation of the arc surface gradually increases from the beginning end of the arc surface to the apex end of the arc surface, and the first distance P 1 is from the beginning end of the arc surface to the apex of the arc surface The end gradually decreases.
  • the tensile deformation amount ⁇ P n of the n-th bridge area arranged in the first direction satisfies the following formula:
  • ⁇ P n (R n -L n )/2+(R n+1 -L n+1 )/2;
  • the first direction is the extending direction of the straight edge tangent to the starting end of the arc in the rectangular surface;
  • L is the length of the island area in the first direction;
  • R is the island area The arc length corresponding to the orthographic projection on the arc surface;
  • n is an integer greater than or equal to 1.
  • FIG. 1 shows a schematic diagram of the overall planar structure of a display substrate provided by an embodiment of the present disclosure
  • FIG. 2 shows a schematic diagram of a partial structure of a display substrate in an embodiment provided by the present disclosure
  • FIG. 3 shows a schematic diagram of a partial structure of a display substrate in another embodiment provided by the present disclosure.
  • a series of openings are generally provided on the flexible substrate, which are divided into: the island area where the pixel is located and the bridge area where the connecting line is located, so that the display device can be stretched.
  • the pixels are arranged in the island area, and the signal traces are arranged on the bridge area.
  • the deformation mainly occurs in the bridge area, and the pixels in the island area basically maintain their shape.
  • the display screen includes a non-stretchable display area and a stretchable display area.
  • the pixel design of the stretchable display area is in the non-stretchable display area. Based on the pixel design, it is formed by removing a certain part of the pixels.
  • the pixel arrangement of the stretchable display area is the pixel arrangement of the stretchable display area after removing the pixels at the corresponding opening position, that is, When the stretchable display area is not stretched and deformed, its pixel distribution is uniform and consistent with the pixel distribution of the non-stretched display area, and the display brightness is uniform.
  • embodiments of the present disclosure provide a display substrate, a manufacturing method thereof, and a display device, which can improve the brightness difference between a stretchable display area and a non-stretched display area in the related art.
  • the display substrate provided by the embodiment of the present disclosure includes:
  • a non-stretchable display area 100 and a stretchable display area 200 includes a plurality of island areas 210 distributed in an array and separated from each other, and connecting adjacent island areas 210
  • a plurality of bridge regions 220 each of the island regions 210 is provided with a pixel unit 211, the pixel unit 211 includes at least one pixel 230, and the bridge region 220 is provided with a signal path that electrically connects each of the pixels 230 String;
  • the pixel pitch of the pixels 230 in the pixel unit 211 in the stretching direction is the reference pitch P 0
  • the pitch between two adjacent pixel units 211 in the stretching direction is the first pitch P 1
  • the first pitch is P 1.
  • a pitch P 1 is smaller than the reference pitch P 0 .
  • the above solution optimizes the pixel design of the stretchable display area 200, and differentiates the pixels of the stretchable display area 200 and the non-stretched display area 100.
  • the pixel pitch between the pixel units 211 is designed to be smaller than the reference pixel pitch P 0 to pre-compensate for the pixel density drop caused by the stretch deformation of the stretchable display area 200, thereby weakening the display effect caused by the difference in pixel density
  • the problem of unevenness and difference in brightness can improve the uniformity of display brightness and improve product quality.
  • the stretching deformation amount of the stretchable display area 200 is estimated in advance, and the stretching amount deformation is compensated into the pixel pitch design of the stretchable display area 200 to achieve the stretching deformation.
  • the subsequent desired pixel arrangement reduces the difference in pixel density between the stretchable display area 200 and the non-stretched display area 100 after the stretchable display area 200 is stretched.
  • the display substrate provided by the embodiment of the present disclosure is optionally described below.
  • the stretch deformation ⁇ P of the bridge region 220 is the stretch between the pixel units 211 on two adjacent island regions 210 in the stretching direction F.
  • the tensile deformation between the pixel units 211 on the two adjacent island regions 210 in the stretching direction F can be performed according to the tensile deformation ⁇ P.
  • the difference between the reference pitch P0 and the tensile deformation ⁇ P is the first pitch P1, for example:
  • the pixel layout of the stretchable display area 200 is in the island area 210, and a plurality of island areas 210 are arranged in a uniform array, and bridge areas 220 are provided at the gaps between the arrays of the island areas 210, as shown in FIG. Show the four bridge areas 220 of A, B, C, and D as an example.
  • the tensile deformation ⁇ P reaches more than 3%
  • the area of the island area 210, the island area 210 and the island area The bridge area 220 between 210 will be deformed to a certain degree, but the main deformation is the junction between the island area 210 and the island area 210, that is, the deformation of the bridge area 220. Therefore, the pixel layout of the stretchable display area 200 is optimized to reduce the pixel pitch between the island area 210 and the island area 210, that is, the distance between adjacent pixel units 211.
  • the amount of deformation of the stretched area of the stretchable screen is small, and in the solution of the present disclosure, only the position of the pixel unit of the overall stretched area can be changed relative to the normal non-stretched area.
  • the overall tensile deformation is relatively small, about 3%*P 0 .
  • the spacing between the first stretchable display region 200 of the island 210 and the island 210 (pitch) P 1 Perform deformation compensation and be reduced to less than or equal to 97%*P 0.
  • the reference pixel pitch P 0 is 129 um
  • the first pitch P 1 125 um, which is reduced by about 3%.
  • the first interval between the island regions 210 can be stretched to the reference interval value of the uniform arrangement state, so as to meet the screen requirement of uniform brightness in the non-stretched display area 100 and the stretchable display area 200.
  • the stretchable display area 200 includes a uniform stretchable display area 200.
  • each of the bridge areas 220 is in the The tensile deformation ⁇ P in the tensile direction F is a fixed value, and the first distance P 1 is a fixed value.
  • the stretchable display area 200 may be a uniform stretchable display area 200, and the amount of stretching deformation at different positions is the same. Therefore, in the stretching direction F, all areas between adjacent island regions 210 The first pitch P 1 is also the same.
  • the stretchable display area 200 includes an unevenly stretched display area, and at least part of the bridge area 220 in the unevenly stretched display area is stretched in the stretching direction F.
  • the stretch deformation is different, and in the uneven stretch display area, the first pitch P 1 has a linear relationship with the corresponding stretch deformation of the bridge region 220, and the stretch of the bridge region 220 The greater the amount of extensional deformation, the smaller the first distance P 1.
  • the stretchable display area 200 is an unevenly stretched display area.
  • the first pitch P 1 at the corresponding position is different, and the stretch deformation of the bridge area 220 is different.
  • the larger the amount the smaller the first distance P 1 at the corresponding position.
  • the stretchable display area 200 may only include the uniformly stretched display area, or may only include the unevenly stretched display area, or may include both the The uniformly stretched display area also includes the unevenly stretched display area.
  • the stretchable display area 200 is attached to some curved surfaces and bears tensile stress.
  • the substrate shown in FIG. 1 bears tensile stress at the four corners of the display substrate.
  • the stretchable display area 200 at the four corners may include a uniformly stretched display area and an unevenly stretched display area, and the display is evenly stretched. The area division between the area and the unevenly stretched display area can be obtained by analyzing the surface characteristics in practical applications.
  • the unevenly stretched display area is a rectangular surface in an unstretched state, and an arc stretched in an arc direction in a stretched state.
  • the arc surface includes an arc surface start end and an arc surface vertex end, and the tensile deformation of the arc surface gradually increases from the arc surface start end to the arc surface vertex end, and the first distance P 1 It gradually decreases from the starting end of the arc surface to the vertex end of the arc surface.
  • the stretchable display area 200 is an area that needs to be arc-shaped.
  • the four-corner area shown in FIG. The direction F is along the direction of the arc shown in FIG. 3, where the curved surface has the smallest amount of tensile deformation on the side close to the non-stretched display area 100, which is the starting end of the curved surface, and is far from the non-stretched display area 100.
  • the side with the largest tensile deformation is the vertex end of the arc surface, and the tensile deformation amount of the bridge area 220 gradually increases as the distance from the vertex end of the arc surface decreases, as indicated by the arrow F'in the figure, Along the direction F'indicated by the arrow, the tensile deformation of the bridge region 220 gradually increases. Accordingly, in the direction of the arrow, the first distance P gradually decreases.
  • the tensile deformation of the bridge area 220 may be based on the difference between the length L of each island area 210 and the arc length R corresponding to the orthographic projection of the island area 210 on the arc surface. The value is determined as follows:
  • the tensile deformation ⁇ P n of the n-th bridge region 220 arranged in the first direction satisfies the following formula:
  • ⁇ P n (R n -L n )/2+(R n+1 -L n+1 )/2;
  • the first direction is the extending direction of the straight edge tangent to the starting end of the arc in the rectangular surface;
  • L is the length of the island area 210 in the first direction;
  • R is the island The arc length corresponding to the orthographic projection of the area 210 on the arc surface;
  • n is an integer greater than or equal to 1.
  • the difference between the length L of each island area 210 in the stretchable display area 200 and the orthographic projection R on the arc surface on which it is located varies according to the shape of the arc, so it is reflected in the stretchable display
  • the tensile deformation corresponding to the second bridge area 220 ⁇ P 2 (R 1 -L 1 )/2+(R 2 -L 2 )/2, where the difference between L and R can be obtained by actual measurement, or it can also be obtained by calculation when the curve equation of the cross section of the curved surface is known.
  • the pixel unit 211 on each island area 210 includes at least two pixels 230, and the pixels between the pixels 230 in the same pixel unit 211 The distance is a reference distance P 0 , and the reference distance P 0 is greater than the first distance P 1 .
  • the tensile deformation of the island region 210 when the tensile deformation of the island region 210 also reaches a certain amount of deformation, there will be a difference in display brightness with the non-stretched display area 100, which cannot be ignored or counted.
  • the pixel unit 211 on each island area 210 includes at least four pixels 230, and each pixel 230 includes at least three sub-units. Pixels.
  • each of the pixels 230 includes a red sub-pixel 231, a blue sub-pixel 232, and a green sub-pixel 233. It should be understood that the above is only an exemplary description, and is not limited thereto.
  • an embodiment of the present disclosure also provides a display device, including the display substrate provided by the embodiment of the present disclosure.
  • the display device provided by the embodiment of the present disclosure also has the beneficial effects brought about by the display substrate provided by the embodiment of the present disclosure, which will not be repeated here.
  • the display device may be various display devices, for example, a mobile phone, a computer, a tablet, a television, a display, and the like.
  • embodiments of the present disclosure also provide a method for manufacturing a display substrate, the method including:
  • Step S1 providing a base substrate
  • Step S2 Make holes on the base substrate to form a non-stretchable display area 100 and a stretchable display area 200, and form pixels on the base substrate, wherein the stretchable display area 200 includes A plurality of island regions 210 arranged in an array and separated from each other, and a plurality of bridge regions 220 connecting adjacent island regions, each of the island regions 210 is provided with a pixel unit 211, the pixel unit 211 includes at least one pixel 230, and a signal wiring that electrically connects each pixel 230 is provided on the bridge region 220;
  • the pixel pitch of the pixels 230 in the pixel unit 211 in the stretching direction is the reference pitch P 0
  • the pitch between two adjacent pixel units 211 in the stretching direction is the first pitch P 1
  • the first pitch is P 1.
  • a pitch P 1 is smaller than the reference pitch P 0 .
  • the pixel design of the stretchable display area 200 is optimized, and the pixels of the stretchable display area 200 and the non-stretched display area 100 are designed to be differentiated.
  • the pixel pitch between the pixel units 211 is designed to be smaller than the reference pixel pitch to pre-compensate for the drop in pixel density caused by the stretch deformation of the stretchable display area 200, thereby weakening the uneven display effect caused by the difference in pixel density , The problem of brightness difference, improve the uniformity of display brightness, and improve product quality.
  • step S2 specifically includes:
  • Step S21 Estimate the tensile deformation amount ⁇ P of the stretchable display area 200, and determine the first pitch P 1 according to the tensile deformation amount ⁇ P.
  • the stretching deformation amount of the stretchable display area 200 is estimated in advance, and the stretching amount deformation is compensated into the pixel pitch design of the stretchable display area 200 to achieve the desired pixels after the stretching and deformation.
  • the arrangement reduces the pixel density difference between the stretchable display area 200 and the non-stretched display area 100 after the stretchable display area 200 is stretched.
  • step S21 specifically includes:
  • the stretchable display area 200 includes a plurality of the bridge regions 220 in the stretching direction F, and the stretching deformation of the bridge regions 220 in the stretching direction F is ⁇ P, which determines the first
  • the stretch deformation ⁇ P of the bridge region 220 that is, between the pixel units 211 on two adjacent island regions 210 in the stretching direction F
  • the amount of tensile deformation after the amount of tensile deformation ⁇ P is determined, the tensile deformation between the pixel units 211 on two adjacent island regions 210 in the stretching direction F can be determined according to the amount of tensile deformation ⁇ P.
  • the difference between the reference pitch P0 and the tensile deformation ⁇ P is the first pitch P1.
  • step S21 specifically includes:
  • the stretchable display area 200 includes a uniform stretchable display area 200.
  • the stretch deformation of each bridge area 220 in the stretch direction F is determined.
  • P is a fixed value
  • the first distance P 1 is a fixed value.
  • the stretchable display area 200 may be a uniform stretchable display area 200, and the amount of stretching deformation at different positions is the same. Therefore, in the stretching direction F, adjacent island regions The first pitch P 1 between 210 is also the same.
  • step S21 specifically includes:
  • the stretchable display area 200 includes an unevenly stretched display area. At least a part of the bridge area 220 in the unevenly stretched display area has different stretch deformations in the stretch direction F. In the uniformly stretched display area, there is a linear relationship between the first pitch P 1 and the corresponding stretch deformation of the bridge region 220. The greater the stretch deformation of the bridge region 220, the greater the stretch deformation of the bridge region 220. The smaller the distance P 1 is.
  • the first distance P 1 at the corresponding position is different according to the different stretch deformation at different positions.
  • the first distance P 1 is smaller.
  • the unevenly stretched display area is a rectangular surface in an unstretched state, and a curved surface stretched along an arc direction in a stretched state, and the curved surface includes a curved surface starting end and a curved surface At the apex end, the tensile deformation of the arc surface gradually increases from the beginning end of the arc surface to the apex end of the arc surface, and the first distance P 1 is from the beginning end of the arc surface to the apex of the arc surface The end gradually decreases.
  • the stretchable display area 200 is an area that needs to be arc-shaped.
  • the four-corner area shown in FIG. The direction F is along the direction of the arc shown in FIG. 3, where the curved surface has the smallest amount of tensile deformation on the side close to the non-stretched display area 100, which is the starting end of the curved surface, and is far from the non-stretched display area 100.
  • the side with the largest tensile deformation is the vertex end of the arc surface, and the tensile deformation amount of the bridge area 220 gradually increases as the distance from the vertex end of the arc surface decreases, as indicated by the arrow F'in the figure, Along the direction indicated by the arrow F′, the tensile deformation amount of the bridge region 220 gradually increases, and accordingly, in the direction of the arrow, the first distance P gradually decreases.
  • step S21 specifically includes:
  • the stretch deformation ⁇ P n of the n-th bridge region 220 arranged in the first direction satisfies the following formula:
  • ⁇ P n (R n -L n )/2+(R n+1 -L n+1 )/2;
  • the first direction is the extending direction of the straight edge tangent to the starting end of the arc in the rectangular surface;
  • L is the length of the island area 210 in the first direction;
  • R is the island The arc length corresponding to the orthographic projection of the area 210 on the arc surface;
  • n is an integer greater than or equal to 1.
  • the tensile deformation of the bridge area 220 can be determined according to the difference between the length L of each island area 210 and the arc length R corresponding to the orthographic projection of the island area 210 on the arc surface.
  • the difference between L and R can be obtained by actual measurement, or it can also be obtained by calculation when the curve equation of the curved surface cross section is known.

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Abstract

一种显示基板及其制造方法、显示装置，显示基板包括：非拉伸显示区域（100）和可拉伸显示区域（200），可拉伸显示区域（200）包括呈阵列分布且彼此分隔开的多个岛区（210）、及将相邻岛区（210）连接起来的多个桥区（220），每一岛区（210）上设置一个像素单元（211），像素单元（211）包括至少一个像素（230），在桥区（220）上设置有电连接各像素（230）的信号走线；其中像素单元（211）中的像素（230）在拉伸方向上的像素间距为基准间距（P0），相邻两个像素单元（211）在拉伸方向上的间距为第一间距（P1），第一间距（P1）小于基准间距（P0）。

Description

显示基板及其制造方法、显示装置
相关申请的交叉引用
本申请主张在2020年4月23日在中国提交的中国专利申请号No.202010326326.9的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示技术领域，尤其涉及一种显示基板及其制造方法、显示装置。
背景技术
目前，柔性显示器件正由二维方向可变发展到三维可变的形式。为了增加柔性显示器件的可变形量，一般是在柔性基底上设置一系列的开孔，分成：像素所在的岛区及连接线所在的桥区，以使显示器件具有可拉伸变形的性能，像素设置在岛区，信号走线布设在桥区上，施加外力时，形变主要发生在桥区，岛区的像素基本保持形状。
柔性显示器件的显示屏幕包括非拉伸显示区域和可拉伸显示区域。可拉伸显示区域的像素设计与非拉伸显示区域的像素设计相比，由于可拉伸显示区域与非拉伸显示区域的形变量存在差异，拉伸区域的像素被设计成是非拉伸区域像素的扩展，例如可以是在非可拉伸显示区域像素设计的基础上，通过去除某一部分像素形成，例如，非可拉伸显示区域的像素排列中将对应开孔位置处的像素去除后即是可拉伸显示区域的像素排列。
因此，在可拉伸显示区域未经过拉伸变形时，其像素分布均匀一致，显示亮度均匀，但是，在拉伸变形时，像素分布均匀性被打破，可拉伸显示区域的像素密度下降，造成可拉伸显示区域的亮度下降，从而造成整体可拉伸显示区域显示面板的发光亮度与非可拉伸显示区域的发光亮度形成差异。
发明内容
本公开所提供的技术方案如下：
一种显示基板，包括非拉伸显示区域和可拉伸显示区域，所述可拉伸显示区域包括呈阵列分布且彼此分隔开的多个岛区、及将相邻所述岛区连接起来的多个桥区，每一所述岛区上设置一个像素单元，所述像素单元包括至少一个像素，在所述桥区上设置有电连接各所述像素的信号走线；
其中所述像素单元中的像素在拉伸方向上的像素间距为基准间距P 0，相邻两个所述像素单元在拉伸方向上的间距为第一间距P 1，所述第一间距P 1小于所述基准间距P 0。
可选地，所述桥区在所述拉伸方向上的拉伸变形量为△P，所述第一间距P 1为：
P 1＝P 0-△P。
可选地，所述可拉伸显示区域包括均匀可拉伸显示区域，在所述均匀可拉伸显示区域内，各所述桥区在所述拉伸方向上的拉伸变形量△P为一固定值，所述第一间距P 1为一固定值。
可选地，所述拉伸变形量△P≥3％*P 0。
可选地，所述可拉伸显示区域包括不均匀拉伸显示区域，所述不均匀拉伸显示区域内至少部分所述桥区在拉伸方向上的拉伸变形量不同，且在所述不均匀拉伸显示区域内，所述桥区的拉伸变形量越大，所述第一间距P 1越小。
可选地，所述不均匀拉伸显示区域在未拉伸状态下为矩形面，在拉伸状态下为沿一弧线方向拉伸的弧面，所述弧面包括弧面起始端和弧面顶点端，所述弧面的拉伸变形量自所述弧面起始端至所述弧面顶点端逐渐增大，所述第一间距P 1自所述弧面起始端至所述弧面顶点端逐渐减小。
可选地，在第一方向上排列的第n个所述桥区的拉伸变形量△P n满足以下公式：
△P n＝(R n-L n)/2+(R n+1-L n+1)/2；
其中，所述第一方向为所述矩形面中与所述弧面起始端相切的直线边缘延伸方向；L为所述岛区在所述第一方向上的长度；R为所述岛区在所述弧面上的正投影所对应的弧长长度；n为大于或等于1的整数。
可选地，每一所述岛区上的像素单元包括至少两个像素。
可选地，根据如下公式对所述岛区的拉伸变形量进行预补偿：
P 0’＝P 0-△P”，△P”为所述岛区的拉伸变形量。
可选地，每一所述岛区上的像素单元包括至少四个像素，每一所述像素包括至少三个子像素。
本公开还提供一种显示装置，包括如上所述的显示基板。
本公开还提供一种显示基板的制造方法，包括：
提供衬底基板；
对所述衬底基板上开孔，形成非拉伸显示区域和可拉伸显示区域，并在所述衬底基板上形成像素，其中，所述可拉伸显示区域包括呈阵列分布且彼此分隔开的多个岛区、及将相邻所述岛区连接起来的多个桥区，每一所述岛区上设置一个像素单元，所述像素单元包括至少一个像素，在所述桥区上设置有电连接各所述像素的信号走线；其中所述像素单元中的像素在拉伸方向上的像素间距为基准间距P 0，相邻两个所述像素单元在拉伸方向上的间距为第一间距P 1，所述第一间距P 1小于所述基准间距P 0。
可选地，所述方法中，在所述衬底基板上形成像素，具体包括：
预估所述可拉伸显示区域的拉伸变形量△P，并根据所述拉伸变形量△P确定所述第一间距P 1。
可选地，所述方法中，所述预估所述可拉伸显示区域的拉伸变形量△P，根据所述拉伸变形量△P确定所述第一间距P 1，具体包括：
确定所述桥区在所述拉伸方向上的拉伸变形量△P；以及
根据如下公式确定所述第一间距P 1：
P 1＝P 0-△P。
可选地，所述方法中，所述可拉伸显示区域包括均匀可拉伸显示区域，在所述均匀可拉伸显示区域内，确定各所述桥区在所述拉伸方向上的拉伸变形量△P为一固定值，所述第一间距P 1为一固定值。
可选地，所述方法中，所述可拉伸显示区域包括不均匀拉伸显示区域，所述不均匀拉伸显示区域内至少部分所述桥区在拉伸方向上的拉伸变形量不同，在所述不均匀拉伸显示区域内，所述桥区的拉伸变形量越大，所述第一间距P 1越小。
可选地，所述不均匀拉伸显示区域在未拉伸状态下为矩形面，在拉伸状 态下为沿一弧线方向拉伸的弧面，所述弧面包括弧面起始端和弧面顶点端，所述弧面的拉伸变形量自所述弧面起始端至所述弧面顶点端逐渐增大，所述第一间距P 1自所述弧面起始端至所述弧面顶点端逐渐减小。
可选地，所述方法中，在所述不均匀拉伸显示区域内，在第一方向上排列的第n个所述桥区的拉伸变形量△P n满足以下公式：
△P n＝(R n-L n)/2+(R n+1-L n+1)/2；
其中，所述第一方向为所述矩形面中与所述弧面起始端相切的直线边缘延伸方向；L为所述岛区在所述第一方向上的长度；R为所述岛区在所述弧面上的正投影所对应的弧长长度；n为大于或等于1的整数。
附图说明
图1表示本公开实施例提供的一种显示基板的整体平面结构示意图；
图2表示本公开提供的一种实施例中的显示基板的局部结构示意图；
图3表示本公开提供的另一种实施例中的显示基板的局部结构示意图。
具体实施方式
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。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开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。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“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。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接 的。“上”、“下”、“左”、“右”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。
在对本公开提供的显示基板及其制造方法、显示装置进行详细说明之前，有必要对相关技术进行详细说明。
在相关技术中，为了增加柔性显示器件的可变形量，一般是在柔性基底上设置一系列的开孔，分成：像素所在的岛区及连接线所在的桥区，以使显示器件具有可拉伸变形的性能，像素设置在岛区，信号走线布设在桥区上，施加外力时，形变主要发生在桥区，岛区的像素基本保持形状。对于柔性显示器件来说，显示屏幕包括非拉伸显示区域和可拉伸显示区域，可拉伸显示区域的像素设计与非拉伸显示区域的像素设计相比，是在非可拉伸显示区域像素设计的基础上，通过去除某一部分像素形成，例如，非可拉伸显示区域的像素排列中将对应开孔位置处的像素去除后即是可拉伸显示区域的像素排列，也就是说，在可拉伸显示区域未经过拉伸变形时，其像素分布与非拉伸显示区域的像素分布均匀一致，显示亮度均匀，但是，在拉伸变形时，像素分布均匀性被打破，可拉伸显示区域的像素密度下降，造成可拉伸显示区域的亮度下降，从而造成显示面板在可拉伸显示区域的发光亮度与非可拉伸显示区域的发光亮度形成差异，对显示品质造成不良影响。
针对上述技术问题，本公开实施例提供了一种显示基板及其制造方法、显示器件，能够改善相关技术中可拉伸显示区域与非拉伸显示区域亮度差异现象。
如图1至图3所示，本公开实施例所提供的显示基板包括：
非拉伸显示区域100和可拉伸显示区域200，所述可拉伸显示区域200包括呈阵列分布且彼此分隔开的多个岛区210、及将相邻所述岛区210连接起来的多个桥区220，每一所述岛区210上设置一个像素单元211，所述像素单元211包括至少一个像素230，在所述桥区220上设置有电连接各所述像素230的信号走线；
其中所述像素单元211中的像素230在拉伸方向上的像素间距为基准间距P 0，相邻两个所述像素单元211在拉伸方向上的间距为第一间距P 1，所述第一间距P 1小于所述基准间距P 0。
上述方案通过优化可拉伸显示区域200的像素设计，将可拉伸显示区域200与非拉伸显示区域100的像素进行差异化设计，通过将可拉伸显示区域200中相邻岛区210上的像素单元211之间的像素间距设计为小于基准像素间距P 0，来对可拉伸显示区域200由于拉伸变形造成的像素密度下降进行了预先补偿，从而弱化由于像素密度差异造成的显示效果不均匀，亮度有差异的问题，提高显示亮度均一性，提升产品品质。
在一些可选地实施例中，通过提前预估可拉伸显示区域200的拉伸变形量，将拉伸量变形量补偿入可拉伸显示区域200的像素间距设计中，以达到拉伸变形后所期望达到的像素排列，降低可拉伸显示区域200经过拉伸后可拉伸显示区域200与非拉伸显示区域100之间的像素密度差异性。以下对本公开实施例所提供的显示基板进行可选地说明。
在一些可选地实施例中，所述可拉伸显示区域200在拉伸方向F上包括多个所述桥区220，所述桥区220在所述拉伸方向F上的拉伸变形量为△P，所述第一间距P 1为：P 1＝P 0-△P。
上述方案中，对于可拉伸显示区域200来说，桥区220的拉伸变形量△P，也就是相邻两个岛区210上的像素单元211之间、在拉伸方向F上的拉伸变形量，在拉伸变形量△P确定之后，可根据拉伸变形量△P来对相邻两个岛区210上的像素单元211之间、在拉伸方向F上的拉伸变形进行预补偿，基准间距P0与拉伸变形量△P的差值即为第一间距P1，例如：
以图2所示为例，可拉伸显示区域200的像素布局在岛区210，多个岛区210均匀阵列排列，岛区210阵列之间的间隙处设置桥区220，以图2中所示A、B、C、D四个桥区220为例，需要达到一定拉伸变形量时，例如，拉伸变形量△P达到3％以上，岛区210的面积，岛区210与岛区210之间的桥区220都会得到一定程度的形变，但是主要发生形变的是岛区210和岛区210之间的结合处，即桥区220的变形。因此，对可拉伸显示区域200的像素布局进行优化，减小岛区210与岛区210之间的像素间距，也就是相邻的像素单元211之间的间距。
一般情况下，可拉伸屏幕的拉伸区域的变形量很小，在本公开的方案中可以只改变整体拉伸区域的像素单元相对正常非拉伸区域的位置。在一些实 施例中，总体拉伸变形量较小，约为3％*P 0。
以图2中所示的显示基板整体拉伸变形量△P≥3％*P 0为例，可拉伸显示区域200的岛区210与岛区210之间的第一间距(pitch)P 1进行变形补偿，被减小至小于或等于97％*P 0，例如，基准像素间距P 0为129um，第一间距P 1＝125um，减小了大约3％，这样，在后续拉伸变形中，可使岛区210之间的第一间距被拉伸至均匀排列状态的基准间距值，以符合在非拉伸显示区域100和可拉伸显示区域200的亮度均匀的屏幕需求。
如图2所示，在一些实施例中，所述可拉伸显示区域200包括均匀可拉伸显示区域200，在所述均匀可拉伸显示区域200内，各所述桥区220在所述拉伸方向F上的拉伸变形量△P为一固定值，所述第一间距P 1为一固定值。也就是说，可拉伸显示区域200可以是均匀可拉伸显示区域200，在不同位置处的拉伸变形量均相同，因此，在拉伸方向F上，相邻岛区210之间的所述第一间距P 1也均相同。
在另一些可选地实施例中，所述可拉伸显示区域200包括不均匀拉伸显示区域，所述不均匀拉伸显示区域内至少部分所述桥区220在拉伸方向F上的拉伸变形量不同，且在所述不均匀拉伸显示区域内，所述第一间距P 1与对应的所述桥区220的拉伸变形量之间具有线性关系，所述桥区220的拉伸变形量越大，所述第一间距P 1越小。
在上述方案中，所述可拉伸显示区域200为不均匀拉伸显示区域，根据不同位置处的拉伸变形量不同，对应位置处的第一间距P 1不同，桥区220的拉伸变形量越大，所对应位置处的所述第一间距P 1越小。
需要说明的是，在一些实施例中，所述可拉伸显示区域200可仅包括所述均匀拉伸显示区域，也可以仅包括所述不均匀拉伸显示区域，还可以是既包括所述均匀拉伸显示区域，又包括所述不均匀拉伸显示区域。
例如，在一些实施例所提供的显示基板中，可拉伸显示区域200会在一些曲面上贴合，而承受拉伸应力，图1中显示基板承受拉伸应力的是显示基板的四角处的显示区域，除了四角处的显示区域，其他显示区域未受到拉伸应力作用，该四角处的可拉伸显示区域200中可包括均匀拉伸显示区域和不均匀拉伸显示区域，均匀拉伸显示区域与不均匀拉伸显示区域的区域划分， 在实际应用中，可根据曲面特征分析得到。
此外，在一些可选地实施例中，如图3所示，所述不均匀拉伸显示区域在未拉伸状态下为矩形面，在拉伸状态下为沿一弧线方向拉伸的弧面，所述弧面包括弧面起始端和弧面顶点端，所述弧面的拉伸变形量自所述弧面起始端至所述弧面顶点端逐渐增大，所述第一间距P 1自所述弧面起始端至所述弧面顶点端逐渐减小。
上述示例性实施例中，可拉伸显示区域200为需要进行弧面贴合的区域，例如，图1所示的四角区域，是将矩形面状显示区域拉伸至弧面状，其拉伸方向F沿图3所示的弧线方向，其中，该弧面在靠近非拉伸显示区域100的一侧拉伸变形量最小，为弧面起始端，在远离所述非拉伸显示区域100的一侧拉伸变形量最大，为弧面顶点端，并且，桥区220的拉伸变形量随与弧面顶点端的距离减小呈逐渐增大趋势，如图中箭头F’所指方向，沿该箭头所示F’方向，桥区220的拉伸变形量逐渐增大，相应地，沿该箭头方向，所述第一间距P逐渐减小。
其中，在该可选地实施例中，所述桥区220的拉伸变形量可根据每个岛区210的长度L与该岛区210在弧面上的正投影所对应弧长R的差值来确定，具体如下：
在第一方向上排列的第n个所述桥区220的拉伸变形量△P n满足以下公式：
△P n＝(R n-L n)/2+(R n+1-L n+1)/2；
其中，所述第一方向为所述矩形面中与所述弧面起始端相切的直线边缘延伸方向；L为所述岛区210在所述第一方向上的长度；R为所述岛区210在所述弧面上的正投影所对应的弧长长度；n为大于或等于1的整数。
上述方案，可拉伸显示区域200中每个岛区210的长度L和其所在弧面上的正投影R之间差值，根据弧面形状不同而有变化，因此，反映到可拉伸显示区域200设计时，需要针对L与R的差值，预先补偿设计岛区210与岛区210的像素单元211之间的第一间距P 1。以补偿第2个桥区220所对应处的第一间距P 1为例，第2个桥区220所对应的拉伸变形量△P 2＝(R 1-L 1)/2+(R 2-L 2)/2，其中L与R之间的差值，可实际量测得到，或者，也可以在已 知曲面横截面曲线方程时，通过计算得到。
此外，在一些可选地实施例中，如图所示，每一所述岛区210上的像素单元211包括至少两个像素230，且同一所述像素单元211内的像素230之间的像素间距为基准间距P 0，所述基准间距P 0大于所述第一间距P 1。
当然可以理解的是，在实际应用中，当所述岛区210的拉伸变形量也达到一定变形量，而与非拉伸显示区域100会形成显示亮度差异，不能忽略不计时，所述基准间距P 0也可以根据岛区210的拉伸变形量而进行补偿，例如，P 0’＝P 0-△P”，△P”为岛区210的拉伸变形量。
此外，在一种可选地实施例中，如图2或图3所示，每一所述岛区210上的像素单元211包括至少四个像素230，每一所述像素230包括至少三个子像素。例如，每一所述像素230包括红色子像素231、蓝色子像素232和绿色子像素233。应当理解的是，以上仅是示例性说明，并不以此进行限定。
此外，本公开实施例还提供一种显示装置，包括本公开实施例所提供的显示基板。显然，本公开实施例提供的显示装置也具有本公开实施例所提供的显示基板所带来的有益效果，在此不再赘述。
此外，所述显示装置可以是各种显示设备，例如，手机、电脑、平板、电视机、显示器等。
此外，本公开实施例还提供了一种显示基板的制造方法，所述方法包括：
步骤S1、提供衬底基板；
步骤S2、对所述衬底基板上开孔，形成非拉伸显示区域100和可拉伸显示区域200，并在所述衬底基板上形成像素，其中，所述可拉伸显示区域200包括呈阵列分布且彼此分隔开的多个岛区210、及将相邻所述岛区连接起来的多个桥区220，每一所述岛区210上设置一个像素单元211，所述像素单元211包括至少一个像素230，在所述桥区220上设置有电连接各所述像素230的信号走线；
其中所述像素单元211中的像素230在拉伸方向上的像素间距为基准间距P 0，相邻两个所述像素单元211在拉伸方向上的间距为第一间距P 1，所述第一间距P 1小于所述基准间距P 0。
上述方案，优化可拉伸显示区域200的像素设计，将可拉伸显示区域200 与非拉伸显示区域100的像素进行差异化设计，通过将可拉伸显示区域200中相邻岛区210上的像素单元211之间的像素间距设计为小于基准像素间距，来对可拉伸显示区域200由于拉伸变形造成的像素密度下降进行了预先补偿，从而弱化由于像素密度差异造成的显示效果不均匀，亮度有差异的问题，提高显示亮度均一性，提升产品品质。
可选地，所述方法中，上述步骤S2，具体包括：
步骤S21、预估所述可拉伸显示区域200的拉伸变形量△P，并根据所述拉伸变形量△P确定所述第一间距P 1。
上述方案，通过提前预估可拉伸显示区域200的拉伸变形量，将拉伸量变形量补偿入可拉伸显示区域200的像素间距设计中，以达到拉伸变形后所期望达到的像素排列，降低可拉伸显示区域200经过拉伸后可拉伸显示区域200与非拉伸显示区域100之间的像素密度差异性。
可选地，所述方法中，步骤S21具体包括：
所述可拉伸显示区域200在拉伸方向F上包括多个所述桥区220，所述桥区220在所述拉伸方向F上的拉伸变形量为△P，确定所述第一间距P 1为：P 1＝P 0-△P。
上述方案中，对于可拉伸显示区域200来说，桥区220的拉伸变形量△P，也就是，相邻两个岛区210上的像素单元211之间、在拉伸方向F上的拉伸变形量，在拉伸变形量△P确定之后，可根据拉伸变形量△P来对相邻两个岛区210上的像素单元211之间、在拉伸方向F上的拉伸变形进行预补偿，基准间距P0与拉伸变形量△P的差值即为第一间距P1。
可选地，所述方法中，步骤S21具体包括：
所述可拉伸显示区域200包括均匀可拉伸显示区域200，在所述均匀可拉伸显示区域200内，确定各所述桥区220在所述拉伸方向F上的拉伸变形量△P为一固定值，所述第一间距P 1为一固定值。
上述方案中，在形成像素时，可拉伸显示区域200可以是均匀可拉伸显示区域200，在不同位置处的拉伸变形量均相同，因此，在拉伸方向F上，相邻岛区210之间的所述第一间距P 1也均相同。
可选地，所述方法中，步骤S21具体包括：
所述可拉伸显示区域200包括不均匀拉伸显示区域，所述不均匀拉伸显示区域内至少部分所述桥区220在拉伸方向F上的拉伸变形量不同，确定在所述不均匀拉伸显示区域内，所述第一间距P 1与对应的所述桥区220的拉伸变形量之间具有线性关系，所述桥区220的拉伸变形量越大，所述第一间距P 1越小。
上述方案中，对于不均匀拉伸显示区域，根据不同位置处的拉伸变形量不同，对应位置处的第一间距P 1不同，桥区220的拉伸变形量越大，所对应位置处的所述第一间距P 1越小。
可选地，所述不均匀拉伸显示区域在未拉伸状态下为矩形面，在拉伸状态下为沿一弧线方向拉伸的弧面，所述弧面包括弧面起始端和弧面顶点端，所述弧面的拉伸变形量自所述弧面起始端至所述弧面顶点端逐渐增大，所述第一间距P 1自所述弧面起始端至所述弧面顶点端逐渐减小。
上述示例性实施例中，可拉伸显示区域200为需要进行弧面贴合的区域，例如，图1所示的四角区域，是将矩形面状显示区域拉伸至弧面状，其拉伸方向F沿图3所示的弧线方向，其中，该弧面在靠近非拉伸显示区域100的一侧拉伸变形量最小，为弧面起始端，在远离所述非拉伸显示区域100的一侧拉伸变形量最大，为弧面顶点端，并且，桥区220的拉伸变形量随与弧面顶点端的距离减小呈逐渐增大趋势，如图中箭头F’所指方向，沿该箭头F’所示方向，桥区220的拉伸变形量逐渐增大，相应地，沿该箭头方向，所述第一间距P逐渐减小。
可选地，所述方法中，步骤S21具体包括：
在所述不均匀拉伸显示区域内，在第一方向上排列的第n个所述桥区220的拉伸变形量△P n满足以下公式：
△P n＝(R n-L n)/2+(R n+1-L n+1)/2；
其中，所述第一方向为所述矩形面中与所述弧面起始端相切的直线边缘延伸方向；L为所述岛区210在所述第一方向上的长度；R为所述岛区210在所述弧面上的正投影所对应的弧长长度；n为大于或等于1的整数。
在该可选地实施例中，所述桥区220的拉伸变形量可根据每个岛区210的长度L与该岛区210在弧面上的正投影所对应弧长R的差值来确定。其中 L与R之间的差值，可实际量测得到，或者，也可以在已知曲面横截面曲线方程时，通过计算得到。
可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”，或者可以存在中间元件。
在上述实施方式的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种显示基板，包括非拉伸显示区域和可拉伸显示区域，所述可拉伸显示区域包括呈阵列分布且彼此分隔开的多个岛区、及将相邻所述岛区连接起来的多个桥区，每一所述岛区上设置一个像素单元，所述像素单元包括至少一个像素，在所述桥区上设置有电连接各所述像素的信号走线；
    其中所述像素单元中的像素在拉伸方向上的像素间距为基准间距P 0，相邻两个所述像素单元在拉伸方向上的间距为第一间距P 1，所述第一间距P 1小于所述基准间距P 0。
  2. 根据权利要求1所述的显示基板，其中，所述桥区在所述拉伸方向上的拉伸变形量为△P，所述第一间距P1为：P 1＝P 0-△P。
  3. 根据权利要求2所述的显示基板，其中，所述可拉伸显示区域包括均匀可拉伸显示区域，在所述均匀可拉伸显示区域内，各所述桥区在所述拉伸方向上的拉伸变形量△P为固定值，所述第一间距P 1为固定值。
  4. 根据权利要求3所述的显示基板，其中，所述拉伸变形量△P≥3％*P 0。
  5. 根据权利要求1所述的显示基板，其中，所述可拉伸显示区域包括不均匀拉伸显示区域，所述不均匀拉伸显示区域内至少部分所述桥区在拉伸方向上的拉伸变形量不同，且在所述不均匀拉伸显示区域内，所述桥区的拉伸变形量越大，所述第一间距P 1越小。
  6. 根据权利要求5所述的显示基板，其中，所述不均匀拉伸显示区域在未拉伸状态下为矩形面，在拉伸状态下为沿一弧线方向拉伸的弧面，所述弧面包括弧面起始端和弧面顶点端，所述弧面的拉伸变形量自所述弧面起始端至所述弧面顶点端逐渐增大，所述第一间距P 1自所述弧面起始端至所述弧面顶点端逐渐减小。
  7. 根据权利要求6所述的显示基板，其中，在第一方向上排列的第n个所述桥区的拉伸变形量△P n满足以下公式：
    △P n＝(R n-L n)/2+(R n+1-L n+1)/2；
    其中，所述第一方向为所述矩形面中与所述弧面起始端相切的直线边缘延伸方向；L为所述岛区在所述第一方向上的长度；R为所述岛区在所述弧面上 的正投影所对应的弧长长度；n为大于或等于1的整数。
  8. 根据权利要求7所述的显示基板，其中，每一所述岛区上的像素单元包括至少两个像素。
  9. 根据权利要求8所述的显示基板，其中根据如下公式对所述岛区的拉伸变形量进行预补偿：
    P 0’＝P 0-△P”，△P”为所述岛区的拉伸变形量。
  10. 根据权利要求8所述的显示基板，其中，每一所述岛区上的像素单元包括至少四个像素，每一所述像素包括至少三个子像素。
  11. 一种显示装置，包括如权利要求1至10任一项所述的显示基板。
  12. 一种显示基板的制造方法，包括：
    提供衬底基板；
    对所述衬底基板上开孔，形成非拉伸显示区域和可拉伸显示区域，并在所述衬底基板上形成像素；
    其中所述可拉伸显示区域包括呈阵列分布且彼此分隔开的多个岛区、及将相邻所述岛区连接起来的多个桥区，每一所述岛区上设置一个像素单元，所述像素单元包括至少一个像素，在所述桥区上设置有电连接各所述像素的信号走线；
    其中所述像素单元中的像素在拉伸方向上的像素间距为基准间距P 0，相邻两个所述像素单元在拉伸方向上的间距为第一间距P 1，所述第一间距P 1小于所述基准间距P 0。
  13. 根据权利要求12所述的方法，其中在所述衬底基板上形成像素，包括：
    预估所述可拉伸显示区域的拉伸变形量△P，并根据所述拉伸变形量△P确定所述第一间距P 1。
  14. 根据权利要求13所述的方法，其中，所述方法中，所述预估所述可拉伸显示区域的拉伸变形量△P，根据所述拉伸变形量△P确定所述第一间距P 1，包括：
    确定所述桥区在所述拉伸方向上的拉伸变形量△P；以及
    根据如下公式确定所述第一间距P 1：
    P 1＝P 0-△P。
  15. 根据权利要求14所述的方法，其中，所述可拉伸显示区域包括均匀可拉伸显示区域，在所述均匀可拉伸显示区域内，各所述桥区在所述拉伸方向上的拉伸变形量△P为固定值，所述第一间距P 1为固定值。
  16. 根据权利要求13所述的方法，其中，所述可拉伸显示区域包括不均匀拉伸显示区域，所述不均匀拉伸显示区域内至少部分所述桥区在拉伸方向上的拉伸变形量不同，在所述不均匀拉伸显示区域内，所述桥区的拉伸变形量越大，所述第一间距P 1越小。
  17. 根据权利要求16所述的方法，其中，所述不均匀拉伸显示区域在未拉伸状态下为矩形面，在拉伸状态下为沿一弧线方向拉伸的弧面，所述弧面包括弧面起始端和弧面顶点端，所述弧面的拉伸变形量自所述弧面起始端至所述弧面顶点端逐渐增大，所述第一间距P 1自所述弧面起始端至所述弧面顶点端逐渐减小。
  18. 根据权利要求17所述的方法，其中，在所述不均匀拉伸显示区域内，在第一方向上排列的第n个所述桥区的拉伸变形量△P n满足以下公式：
    △P n＝(R n-L n)/2+(R n+1-L n+1)/2；
    其中，所述第一方向为所述矩形面中与所述弧面起始端相切的直线边缘延伸方向；L为所述岛区在所述第一方向上的长度；R为所述岛区在所述弧面上的正投影所对应的弧长长度；n为大于或等于1的整数。
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