WO2020113661A1 - 显示面板 - Google Patents

显示面板 Download PDF

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Publication number
WO2020113661A1
WO2020113661A1 PCT/CN2018/121358 CN2018121358W WO2020113661A1 WO 2020113661 A1 WO2020113661 A1 WO 2020113661A1 CN 2018121358 W CN2018121358 W CN 2018121358W WO 2020113661 A1 WO2020113661 A1 WO 2020113661A1
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Prior art keywords
sub
pixel
edge
display
pixels
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PCT/CN2018/121358
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English (en)
French (fr)
Inventor
赵凯祥
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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 US17/275,208 priority Critical patent/US11864445B2/en
Publication of WO2020113661A1 publication Critical patent/WO2020113661A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/421—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs

Definitions

  • the present invention relates to the field of display technology, and in particular, to a display panel having a shaped display edge.
  • Organic light emitting diode (Organic Light Emitting Display, OLED) display device has self-luminous, low driving voltage, high luminous efficiency, short response time, high definition and contrast, near 180 ° viewing angle, wide use temperature range, can be achieved Many advantages such as flexible display and large-area full-color display are recognized by the industry as the most promising display devices.
  • OLED display devices generally include: a substrate, an anode provided on the substrate, a hole injection layer provided on the anode, a hole transport layer provided on the hole injection layer, and light emission provided on the hole transport layer Layer, an electron transport layer provided on the light-emitting layer, an electron injection layer provided on the electron transport layer, and a cathode provided on the electron injection layer.
  • the light-emitting principle of OLED display devices is that semiconductor materials and organic light-emitting materials are driven by an electric field, which causes light emission due to injection and recombination of overloaded carriers.
  • OLED display devices generally use ITO pixel electrodes and metal electrodes as the anode and cathode of the device, respectively, under a certain voltage drive, electrons and holes are injected from the cathode and anode into the electron transport layer and hole transport layer, respectively.
  • the holes migrate to the light-emitting layer through the electron-transport layer and the hole-transport layer, and meet in the light-emitting layer to form excitons and excite the light-emitting molecules. The latter emits visible light through radiation relaxation.
  • the shape of the display panel is no longer limited to regular shapes such as rectangles, or in special application scenarios,
  • the display panel is not limited to a regular shape such as a rectangle.
  • the special-shaped display panel gradually appeared in people's field of vision.
  • the four corners of the display panel are rounded corners, or a groove structure is provided on the display panel to install earpieces, cameras, etc., or a round or other shape display panel is designed.
  • RGB stripe 105 cannot cover the entire display area 100, so that the sub-pixels 105 form a stepped structure near the edge of the display panel, when the user uses the above display panel, at the irregular edge of the display area It is easy to produce a jagged feeling, which makes the display quality at the edge of the display panel poor.
  • An object of the present invention is to provide a display panel, which can effectively solve the problem of jaggedness of the display edge of the display panel, thereby improving the display effect of the display panel.
  • the present invention provides a display panel, which is divided into a display area and a non-display area surrounding the display area;
  • the display panel includes a plurality of sub-pixels corresponding to at least one color provided in the display area;
  • the sub-pixels peripheral to the plurality of sub-pixels and arranged along the edge of the display area are edge sub-pixels, and the remaining sub-pixels in the display area surrounded by the edge sub-pixels are internal sub-pixels;
  • the portion of the plurality of sub-pixels in the display area is a display pixel portion, an edge contour of the display pixel portion is formed by the edge sub-pixel, and the shape of the edge sub-pixels in the plurality of sub-pixels is the same as that of the same color
  • the shapes of the internal sub-pixels are different, and the edge sub-pixels in the plurality of sub-pixels fill the area between the internal sub-pixels and the edge of the display area, so that the edge outline shape of the display pixel portion and the edge outline shape of the display area Consistent.
  • the edge sub-pixel extends from the display area into the non-display area, so that the edge outline shape of the display pixel portion is consistent with the edge outline shape of the display area.
  • the edge sub-pixel is located in the display area, and the edge contour shape of the edge sub-pixel on the side near the display area is consistent with the edge contour shape of the display area near it, so that the display pixel portion
  • the edge contour shape is consistent with the edge contour shape of the display area.
  • the display brightness of the edge sub-pixel and the internal sub-pixel of the same color are the same, so that the display brightness of the entire display area is uniform.
  • Each of the edge sub-pixels is respectively connected to a first TFT driving device that drives and emits light, and each of the internal sub-pixels is respectively connected to a second TFT driving device that drives and emits light;
  • the area of the edge sub-pixel is S1, and the area of the inner sub-pixel is S2;
  • the drive current of the first TFT driving device to the corresponding edge sub-pixel is II, and the second TFT drives The drive current of the device to the corresponding internal sub-pixel is 12;
  • the display brightness of the edge sub-pixel and the internal sub-pixel of the same color is uniform.
  • the ratio of the width and length of the channel of the first TFT driving device is W1/L1;
  • the ratio of the width and length of the channel of the second TFT driving device is W2/L2;
  • the display brightness of the edge sub-pixels and the internal sub-pixels of the same color are the same and the same, so that the display brightness of the entire display area is uniform.
  • the edge subpixel includes a red subpixel, a green subpixel, and a blue subpixel; the internal subpixel includes a red subpixel, a green subpixel, and a blue subpixel.
  • the area of the edge sub-pixel is larger than the area of internal sub-pixels of the same color.
  • the shape of the edge sub-pixel and the shape of the inner sub-pixel are rectangles of different shapes.
  • the edge contour shape of the display area includes an arc or a diagonal line.
  • the present invention provides a display panel, including a plurality of sub-pixels corresponding to at least one color provided in the display area; the plurality of sub-pixels peripherally arranged along the edge of the display area
  • the sub-pixel is an edge sub-pixel, and the remaining sub-pixels in the display area surrounded by the edge sub-pixels are internal sub-pixels;
  • the portion of the plurality of sub-pixels in the display area is a display pixel portion, and the edge contour of the display pixel portion is
  • the edge subpixel is formed, the shape of the edge subpixel in the plurality of subpixels is different from the shape of the internal subpixel of the same color, and the edge subpixel in the plurality of subpixels fills between the internal subpixel and the edge of the display area Area, so that the edge outline shape of the display pixel portion and the display
  • the shape of the edge contour of the display area is consistent.
  • FIG. 1 is a schematic view of an existing display panel at the edge of an irregular display
  • FIG. 2 is a partial schematic view of a first embodiment of a display panel of the present invention.
  • FIG. 3 is a partial schematic view of a second embodiment of the display panel of the present invention.
  • the present invention provides a display panel, which is mainly applied to an OLED display panel, which can effectively solve the problem of the jaggedness of the irregular display edge of the display panel, thereby improving the display effect of the display panel.
  • the display panel is divided into a display area 1 and a non-display area 2 surrounding the display area 1; the display panel includes corresponding to A plurality of sub-pixels of at least one color provided in the display area 1.
  • the peripheral sub-pixel disposed along the edge of the display area 1 is an edge sub-pixel 31, and the remaining sub-pixels in the display area 1 surrounded by the edge sub-pixel 31 are internal sub-pixels 32.
  • the portion of the plurality of sub-pixels in the display area 1 is a display pixel portion, an edge contour of the display pixel portion is formed by the edge sub-pixel 31, and the shape of the edge sub-pixel 31 among the plurality of sub-pixels is The shape of the internal sub-pixel 32 of the same color is different, and the edge sub-pixel 31 of the plurality of sub-pixels fills the area between the internal sub-pixel 32 and the edge of the display area 1, so that the edge contour shape of the display pixel portion is The outline shape of the display area is consistent.
  • the area of the edge sub-pixel 31 is larger than the area of the internal sub-pixel 32 of the same color, and the edge sub-pixel 31 extends from the display area 1 into the non-display area 2, thus making the The edge contour shape of the display pixel portion is consistent with the edge contour shape of the display area 1.
  • the shape of the inner sub-pixel 32 is a rectangle.
  • edge sub-pixel 31 and the internal sub-pixel 32 of the same color are different shapes of rectangles.
  • the edge sub-pixel 31 includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
  • the internal sub-pixel 32 includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.
  • the driving thin film transistor can drive the sub-pixels to work and emit light.
  • the driving current provided by the driving thin film transistor satisfies the following formula:
  • I is the driving current of the sub-pixel
  • H is the electron mobility
  • Cox is the gate-source interlayer capacitance of the pixel driving thin film transistor
  • W is the channel width of the pixel driving thin film transistor
  • L is the pixel driving thin film transistor
  • Vgs is the gate-source voltage of the pixel driving thin film transistor
  • Vth is the threshold voltage of the pixel driving thin film transistor.
  • each of the edge sub-pixels 31 is correspondingly connected to a first TFT driving device that drives and emits light
  • each of the internal sub-pixels 32 is correspondingly connected to a pair of It performs a second TFT drive device that drives light emission.
  • the area of the edge sub-pixel 31 is S1
  • the area of the internal sub-pixel 32 is S2
  • the driving current of the first T FT driving device to the corresponding edge sub-pixel 31 is II
  • the second The drive current of the TFT drive device to the corresponding internal sub-pixel 32 is 12
  • the ratio of the width and length of the channel of the first TFT drive device is W1/L1
  • the width and length of the channel of the second TFT drive device The ratio is W2/L2.
  • the display brightness of the edge sub-pixel 31 and the internal sub-pixel 32 of the same color the same is uniform.
  • the driving current II of the edge sub-pixel 31 and the driving current of the internal sub-pixel 32 of the same color can be made 12, and the area S1 of the edge sub-pixel 31 and the area S2 of the inner sub-pixel 32 satisfy the following relationship
  • the area SI of the edge sub-pixel 31 and the area S2 of the internal sub-pixel 32 of the same color, and the width and length of the channel of the first TFT driving device corresponding to the edge sub-pixel 31 The ratio W1/L1 of the ratio W2/L2 of the width and length of the channel of the corresponding second TFT driving device of the internal sub-pixel 32 satisfies the following relationship:
  • the ratio W2/L2 of the width and length of the channel of the second TFT driving device corresponding to the internal sub-pixel 32 is 1, the area S2 of the internal sub-pixel 32 is 1, and the same color
  • the area of the edge sub-pixel 31 is 1.5, then in order to make the brightness of the edge sub-pixel 31 and the internal sub-pixel 32 of the same color uniform, so that the brightness of the edge display area relative to the main display area is uniform, so that the entire display area
  • the display brightness is uniform
  • the ratio W1/L1 of the width and length of the channel of the first TFT driving device corresponding to the edge sub-pixel 31 should be 2/3.
  • the edge sub-pixel 31 is also located in the display area 1, and the edge sub-pixel 31 itself
  • the edge contour shape of is consistent with the contour shape of the edge of the display area 1 closest to each other, so that the edge contour shape of the display pixel portion is consistent with the edge contour shape of the display area 1.
  • the other technical features are the same as those in the above embodiment, and will not be repeated here.
  • the present invention provides a display panel.
  • the edge contour shape of the display pixel portion is consistent with the edge contour shape of the display area, which can effectively solve the jaggedness of the irregular display edge of the display panel Problem, so as to improve the display effect of the display panel.
  • the width and length of the channel corresponding to the driving thin film transistor can be adjusted to adjust the edge sub-pixels to have the same color
  • the brightness of the internal sub-pixels is uniform, so that the brightness of the edge display area relative to the main display area is uniform, and the display brightness of the entire display area is uniform.
  • the present invention provides a display panel including at least one color set corresponding to the display area A plurality of sub-pixels of the plurality of sub-pixels; peripheral sub-pixels disposed along the edge of the display area are edge sub-pixels, and the remaining sub-pixels in the display area surrounded by the edge sub-pixels are internal sub-pixels; A portion of the plurality of sub-pixels in the display area is a display pixel portion, an edge contour of the display pixel portion is formed by the edge sub-pixel, and the shape of the edge sub-pixel in the plurality of sub-pixels and the shape of the internal sub-pixel of the same color Differently, the edge sub-pixels in the plurality of sub-pixels fill the area between the internal sub-pixel and the edge of the display area, so that the edge contour shape of the display pixel portion is consistent with the edge contour shape of the display area.
  • the improvement of the shape of the sub-pixels can effectively solve the problem of the jaggedness of the irregular display edge of the display panel,

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

一种显示面板，其包括对应于显示区（1）设置的至少一种颜色的多个子像素；多个子像素中外围的且沿显示区（1）边缘设置的子像素为边缘子像素（31），剩余的由边缘子像素（31）包围的位于显示区（1）的子像素为内部子像素（32）；多个子像素在显示区（1）的部分为显示像素部，显示像素部的边缘轮廓由边缘子像素（31）形成，多个子像素中的边缘子像素（31）的形状与同颜色的内部子像素（32）的形状不同，多个子像素中的边缘子像素（31）填充内部子像素（32）与显示区（1）边缘之间的区域，从而使得显示像素部的边缘轮廓形状与显示区（1）的边缘轮廓形状一致，通过对边缘子像素（31）形状的改进，可有效解决显示面板异形显示边缘的锯齿感问题，从而提高显示面板的显示效果。

Description

显示面板
技术领域
[0001] 本发明涉及显示技术领域， 尤其涉及一种具有异形显示边缘的显示面板。
背景技术
[0002] 有机发光二极管 (Organic Light Emitting Display， OLED) 显示装置具有自发 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。
[0003] OLED显示装置通常包括： 基板、 设于基板上的阳极、 设于阳极上的空穴注入 层、 设于空穴注入层上的空穴传输层、 设于空穴传输层上的发光层、 设于发光 层上的电子传输层、 设于电子传输层上的电子注入层及设于电子注入层上的阴 极。 OLED显示器件的发光原理为半导体材料和有机发光材料在电场驱动下， 通 过载流子注入和复合导致发光。 具体的， OLED显示器件通常采用 ITO像素电极 和金属电极分别作为器件的阳极和阴极， 在一定电压驱动下， 电子和空穴分别 从阴极和阳极注入到电子传输层和空穴传输层， 电子和空穴分别经过电子传输 层和空穴传输层迁移到发光层， 并在发光层中相遇， 形成激子并使发光分子激 发， 后者经过辐射弛豫而发出可见光。
[0004] 随着 OLED技术的发展， 显示装置逐渐趋于窄边框甚至无边框， 从美观以及产 品质量角度考虑， 显示面板的形状不再仅限于矩形等规则的形状， 或者在特殊 的应用场景， 显示面板也不局限于矩形等规则的形状。 异形显示面板逐渐出现 在人们的视野中。 例如， 显示面板的四个角为圆角， 或者在显示面板上设置挖 槽结构用以安装听筒、 摄像头等设备， 再或者设计出圆形或者其它形状的显示 面板。
[0005] 由于异形显示面板的边缘为异形结构， 因此， 如图 1所示， 通常的条状子像素
(RGB stripe) 105无法铺满整个显示区 100, 使子像素 105在靠近显示面板的边 缘处形成阶梯状结构， 则用户在使用上述显示面板时， 在显示区的异形边缘处 容易产生锯齿感， 使显示面板边缘的显示画面质量较差。
发明概述
技术问题
[0006] 本发明的目的在于提供一种显示面板， 可有效解决显示面板异形显示边缘的锯 齿感问题， 从而提高显示面板的显示效果。
问题的解决方案
技术解决方案
[0007] 为实现上述目的， 本发明提供了一种显示面板， 划分为显示区及包围所述显示 区的非显示区；
[0008] 所述显示面板包括对应于所述显示区设置的至少一种颜色的多个子像素；
[0009] 所述多个子像素中外围的且沿所述显示区边缘设置的子像素为边缘子像素， 剩 余的由边缘子像素包围的位于显示区的子像素为内部子像素；
[0010] 所述多个子像素在显示区的部分为显示像素部， 所述显示像素部的边缘轮廓由 所述边缘子像素形成， 所述多个子像素中的边缘子像素的形状与同颜色的内部 子像素的形状不同， 所述多个子像素中的边缘子像素填充内部子像素与显示区 边缘之间的区域， 从而使得所述显示像素部的边缘轮廓形状与所述显示区的边 缘轮廓形状一致。
[0011] 所述边缘子像素从所述显示区伸入所述非显示区， 从而使得所述显示像素部的 边缘轮廓形状与所述显示区的边缘轮廓形状一致。
[0012] 所述边缘子像素位于所述显示区， 且所述边缘子像素本身的靠近显示区一侧的 边缘轮廓形状与其靠近的显示区的边缘轮廓形状一致， 从而使得所述显示像素 部的边缘轮廓形状与所述显示区的边缘轮廓形状一致。
[0013] 所述边缘子像素与同颜色的内部子像素的显示亮度相同， 使所述显示区整体的 显示亮度均一。
[0014] 每一所述边缘子像素分别对应连接有对其进行驱动发光的第一 TFT驱动器件， 每一所述内部子像素分别对应连接有对其进行驱动发光的第二 TFT驱动器件；
[0015] 所述边缘子像素的面积为 S1， 所述内部子像素的面积为 S2;
[0016] 所述第一 TFT驱动器件对相应边缘子像素的驱动电流为 II， 所述第二 TFT驱动 器件对相应内部子像素的驱动电流为 12;
[0017] 所述边缘子像素的驱动电流 II与同颜色的内部子像素的驱动电流 12， 以及该边 缘子像素的面积 S1与该内部子像素的面积 S2, 满足以下关系：
[0018] I1* S1= I2* S2，
[0019] 以使得所述边缘子像素与同颜色的内部子像素的显示亮度相同， 使所述显示区 整体的显示亮度均一。
[0020] 所述第一 TFT驱动器件的沟道的宽和长的比值为 W1/L1 ;
[0021] 所述第二 TFT驱动器件的沟道的宽和长的比值为 W2/L2;
[0022] 所述边缘子像素的面积 S 1与同颜色的内部子像素的面积 S2， 以及该边缘子像素 对应的第一 TFT驱动器件的沟道的宽和长的比值 Wl/L 1与该内部子像素的对应的 第二 TFT驱动器件的沟道的宽和长的比值 W2/L2， 满足以下关系：
[0023] (W1/L1) / (W2/L2) =S2/S1；
[0024] 以使得所述边缘子像素与同颜色的内部子像素的显示亮度相同相同， 使所述显 示区整体的显示亮度均一。
[0025] 所述边缘子像素包括红色子像素、 绿色子像素及蓝色子像素； 所述内部子像素 包括红色子像素、 绿色子像素及蓝色子像素。
[0026] 所述边缘子像素的面积大于同颜色的内部子像素的面积。
[0027] 所述边缘子像素的形状与所述内部子像素的形状为不同形状的矩形。
[0028] 所述显示区的边缘轮廓形状包括弧线或者斜线。
发明的有益效果
有益效果
[0029] 本发明的有益效果： 本发明提供一种显示面板， 包括对应于显示区设置的至少 一种颜色的多个子像素； 所述多个子像素中外围的且沿所述显示区边缘设置的 子像素为边缘子像素， 剩余的由边缘子像素包围的位于显示区的子像素为内部 子像素； 所述多个子像素在显示区的部分为显示像素部， 所述显示像素部的边 缘轮廓由所述边缘子像素形成， 所述多个子像素中的边缘子像素的形状与同颜 色的内部子像素的形状不同， 所述多个子像素中的边缘子像素填充内部子像素 与显示区边缘之间的区域， 从而使得所述显示像素部的边缘轮廓形状与所述显 示区的边缘轮廓形状一致， 通过对边缘子像素形状的改进， 可有效解决显示面 板异形显示边缘的锯齿感问题， 从而提高显示面板的显示效果。
对附图的简要说明
附图说明
[0030] 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。
[0031] 附图中，
[0032] 图 1为现有显不面板在异形显不边缘处的不意图；
[0033] 图 2为本发明的显示面板的第一实施例的局部示意图；
[0034] 图 3为本发明的显示面板的第二实施例的局部示意图。
发明实施例
本发明的实施方式
[0035] 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。
[0036] 本发明提供一种显示面板， 主要应用于 OLED显示面板， 可有效解决显示面板 异形显示边缘的锯齿感问题， 从而提高显示面板的显示效果。
[0037] 请参阅图 1， 在本发明的显示面板第一实施例中， 所述显示面板划分为显示区 1 及包围所述显示区 1的非显示区 2; 所述显示面板包括对应于所述显示区 1设置的 至少一种颜色的多个子像素。
[0038] 所述多个子像素中沿所述显示区 1边缘设置的外围的子像素为边缘子像素 31， 剩余的由边缘子像素 31包围的位于显示区 1的子像素为内部子像素 32。
[0039] 所述多个子像素在显示区 1的部分为显示像素部， 所述显示像素部的边缘轮廓 由所述边缘子像素 31形成， 所述多个子像素中的边缘子像素 31的形状与同颜色 的内部子像素 32的形状不同， 所述多个子像素中的边缘子像素 31填充内部子像 素 32与显示区 1边缘之间的区域， 从而使得所述显示像素部的边缘轮廓形状与所 述显示区的边缘轮廓形状一致。
[0040] 具体地， 在本实施例中， 所述边缘子像素 31的面积大于同颜色的内部子像素 32 的面积， 所述边缘子像素 31从所述显示区 1伸入所述非显示区 2, 从而使得所述 显示像素部的边缘轮廓形状与所述显示区 1的边缘轮廓形状一致。
[0041] 具体地， 所述内部子像素 32的形状为矩形。
[0042] 进一步地， 在本实施例中， 所述边缘子像素 31与同颜色的内部子像素 32为不同 形状的矩形。
[0043] 具体地， 所述边缘子像素 31包括红色子像素、 绿色子像素及蓝色子像素； 所述 内部子像素 32包括红色子像素、 绿色子像素及蓝色子像素。
[0044] 需要说明的是， 驱动薄膜晶体管 (Thin Film Transistor, TFT) 可以驱动子像 素工作发光。 驱动薄膜晶体管提供的驱动电流满足以下公式：
[0045] I
Figure imgf000007_0001
[0046] 其中， I为子像素的驱动电流， H为电子迁移率， Cox为像素驱动薄膜晶体管的 栅源层间电容， W为像素驱动薄膜晶体管的沟道宽度， L为像素驱动薄膜晶体管 的沟道长度， Vgs为像素驱动薄膜晶体管的栅源电压， Vth为像素驱动薄膜晶体 管的阈值电压。 从中可以发现 :驱动电流与电子迁移率、 栅源层间电容、 沟道宽 度正相关， 与沟道长度负相关。
[0047] 在本发明提供的具体实施例中， 每一所述边缘子像素 31分别对应连接有对其进 行驱动发光的第一 TFT驱动器件， 每一所述内部子像素 32分别对应连接有对其 进行驱动发光的第二 TFT驱动器件。
[0048] 设所述边缘子像素 31的面积为 S1， 所述内部子像素 32的面积为 S2, 所述第一T FT驱动器件对相应边缘子像素 31的驱动电流为 II， 所述第二 TFT驱动器件对相 应内部子像素 32的驱动电流为 12, 所述第一TFT驱动器件的沟道的宽和长的比值 为 W1/L1， 所述第二 TFT驱动器件的沟道的宽和长的比值为 W2/L2。
[0049] 那么， 为了使得所述边缘子像素 31与同颜色的内部子像素 32的显示亮度相同， 使所述显示区整体的显示亮度均一。
[0050] 可以使得所述边缘子像素 31的驱动电流 II与同颜色的内部子像素 32的驱动电流 12， 以及该边缘子像素 31的面积 S1与该内部子像素 32的面积 S2, 满足以下关系
[0051] I1* S1= I2* S2。
[0052] 进一步地， 可以通过使所述边缘子像素 31的面积 SI与同颜色的内部子像素 32的 面积 S2， 以及该边缘子像素 31对应的第一 TFT驱动器件的沟道的宽和长的比值 W1/L1与该内部子像素 32的对应的第二 TFT驱动器件的沟道的宽和长的比值 W2/ L2, 满足以下关系：
[0053] (W1/L1) / (W2/L2) =S2/S1；
[0054] 从而使得 II* Sl= 12* S2, 进而以使得所述边缘子像素 31与同颜色的内部子像 素 32的显示亮度相同相同， 使所述显示区整体的显示亮度均一。
[0055] 示例性地， 假设所述内部子像素 32所对应的第二 TFT驱动器件的沟道的宽和长 的比值 W2/L2为 1， 该内部子像素 32的面积 S2为 1， 同颜色的边缘子像素 31的面 积为 1.5 , 那么为了使得该边缘子像素 31与其同颜色的内部子像素 32的亮度一致 ， 进而使得边缘显示区相对于主显示区的亮度均一， 使所述显示区整体的显示 亮度均一， 该边缘子像素 31所对应的第一 TFT驱动器件的沟道的宽和长的比值 W1/L1应为 2/3。
[0056] 请参阅图 3 , 在本发明的显示面板第二实施例， 与上述第一实施例相比， 所述 边缘子像素 31同样位于所述显示区 1， 且所述边缘子像素 31本身的边缘轮廓形状 与最靠近的所述显示区 1的边缘的轮廓形状一致， 从而使得所述显示像素部的边 缘轮廓形状与所述显示区 1的边缘轮廓形状一致。 其他技术特征均与上述实施例 相同， 在此不再赘述。
[0057] 本发明提供一种显示面板， 通过对边缘子像素形状的改进， 使得显示像素部的 边缘轮廓形状与所述显示区的边缘轮廓形状一致， 可有效解决显示面板异形显 示边缘的锯齿感问题， 从而提高显示面板的显示效果， 对于不同面积的边缘子 像素与内部子像素， 则可通过调整对应驱动薄膜晶体管的沟道的宽和长的比值 进行调节， 以使边缘子像素与其同颜色的内部子像素的亮度一致， 进而使得边 缘显示区相对于主显示区的亮度均一， 使所述显示区整体的显示亮度均一。
[0058] 综上所述， 本发明提供一种显示面板， 包括对应于显示区设置的至少一种颜色 的多个子像素； 所述多个子像素中外围的且沿所述显示区边缘设置的子像素为 边缘子像素， 剩余的由边缘子像素包围的位于显示区的子像素为内部子像素； 所述多个子像素在显示区的部分为显示像素部， 所述显示像素部的边缘轮廓由 所述边缘子像素形成， 所述多个子像素中的边缘子像素的形状与同颜色的内部 子像素的形状不同， 所述多个子像素中的边缘子像素填充内部子像素与显示区 边缘之间的区域， 从而使得所述显示像素部的边缘轮廓形状与所述显示区的边 缘轮廓形状一致， 通过对边缘子像素形状的改进， 可有效解决显示面板异形显 示边缘的锯齿感问题， 从而提高显示面板的显示效果。
[0059] 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

权利要求书
[权利要求 1] 一种显示面板， 划分为显示区及包围所述显示区的非显示区；
所述显示面板包括对应于所述显示区设置的至少一种颜色的多个子像 素；
所述多个子像素中外围的且沿所述显示区边缘设置的子像素为边缘子 像素， 剩余的由边缘子像素包围的位于显示区的子像素为内部子像素 所述多个子像素在显示区的部分为显示像素部， 所述显示像素部的边 缘轮廓由所述边缘子像素形成， 所述多个子像素中的边缘子像素的形 状与同颜色的内部子像素的形状不同， 所述多个子像素中的边缘子像 素填充内部子像素与显示区边缘之间的区域， 从而使得所述显示像素 部的边缘轮廓形状与所述显示区的边缘轮廓形状一致。
[权利要求 2] 如权利要求 1所述的显示面板， 其中， 所述边缘子像素从所述显示区 伸入所述非显示区， 从而使得所述显示像素部的边缘轮廓形状与所述 显示区的边缘轮廓形状一致。
[权利要求 3] 如权利要求 1所述的显示面板， 其中， 所述边缘子像素位于所述显示 区， 且所述边缘子像素本身的靠近显示区一侧的边缘轮廓形状与其靠 近的显示区的边缘轮廓形状一致， 从而使得所述显示像素部的边缘轮 廓形状与所述显示区的边缘轮廓形状一致。
[权利要求 4] 如权利要求 1所述的显示面板， 其中， 所述边缘子像素与同颜色的内 部子像素的显示亮度相同， 使所述显示区整体的显示亮度均一。
[权利要求 5] 如权利要求 4所述的显示面板， 其中， 每一所述边缘子像素分别对应 连接有对其进行驱动发光的第一 TFT驱动器件， 每一所述内部子像素 分别对应连接有对其进行驱动发光的第二 TFT驱动器件；
所述边缘子像素的面积为 S1， 所述内部子像素的面积为 S2;
所述第一 TFT驱动器件对相应边缘子像素的驱动电流为 II， 所述第二 TFT驱动器件对相应内部子像素的驱动电流为 12 ;
所述边缘子像素的驱动电流 II与同颜色的内部子像素的驱动电流 12， 以及该边缘子像素的面积 S1与该内部子像素的面积 S2, 满足以下关 系：
I1* S1= I2* S2，
以使得所述边缘子像素与同颜色的内部子像素的显示亮度相同， 使所 述显示区整体的显示亮度均一。
[权利要求 6] 如权利要求 5所述的显示面板， 其中， 所述第一 TFT驱动器件的沟道 的宽和长的比值为 W1/L1 ;
所述第二 TFT驱动器件的沟道的宽和长的比值为 W2/L2 ;
所述边缘子像素的面积 S 1与同颜色的内部子像素的面积 S2， 以及该 边缘子像素对应的第一 TFT驱动器件的沟道的宽和长的比值 W1/L1与 该内部子像素的对应的第二 TFT驱动器件的沟道的宽和长的比值 W2/ L2, 满足以下关系：
(W1/L1) / (W2/L2) =S2/S1；
以使得所述边缘子像素与同颜色的内部子像素的显示亮度相同， 使所 述显示区整体的显示亮度均一。
[权利要求 7] 如权利要求 1所述的显示面板， 其中， 所述边缘子像素包括红色子像 素、 绿色子像素及蓝色子像素； 所述内部子像素包括红色子像素、 绿 色子像素及蓝色子像素。
[权利要求 8] 如权利要求 2所述的显示面板， 其中， 所述边缘子像素的面积大于同 颜色的内部子像素的面积。
[权利要求 9] 如权利要求 7所述的显示面板， 其中， 所述边缘子像素与同颜色的内 部子像素为不同形状的矩形。
[权利要求 10] 如权利要求 1所述的显示面板， 其中， 所述显示区的边缘轮廓形状包 括弧线或者斜线。
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US11864445B2 (en) 2024-01-02

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