Display panel mother board, display panel and display device

Abstract

The invention provides a display panel mother board, a display panel and a display device. The display panel mother board comprises at least two display panels arranged in an array, and each display panel comprises a display area and a non-display area connected with the display area. The non-display area comprises a first cutting area and a second cutting area which are located on the two sides of the display area, and a cutting line is arranged between the first cutting area and the second cutting area connected with the first cutting area. In the first direction parallel to the plane where the display panel is located and perpendicular to the cutting lines, the width of the first cutting area is larger than that of the second cutting area, and the distances between the cutting lines and the two adjacent display areas are equal. The cutting areas on the two sides of the cutting line of the display panel mother board are subjected to non-uniform splitting design, so that the width of the non-display area and the width of the cutting areas are reduced, and the utilization rate of glass in the display panel mother board is increased.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display panel motherboard, a display panel, and a display device. Background Technology

[0002] In recent years, with the technological development of smart terminal devices and wearable devices, the demand for flat panel displays has become increasingly diversified. OLED (Organic Light-Emitting Diode) displays, for example, have self-emissive properties and, compared to LCD screens, eliminate the need for a relatively energy-intensive backlight module, thus offering the advantage of greater energy efficiency.

[0003] Existing display panels are manufactured by cutting a motherboard. To make effective use of the motherboard, multiple display panels are usually arranged closely on the motherboard.

[0004] However, the glass utilization rate of close-packed products needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a display panel motherboard, a display panel, and a display device to solve the problem of low glass utilization in densely packed motherboards in existing display technologies.

[0006] To achieve the above objectives, the present invention provides a display panel motherboard, comprising at least two display panels arranged in an array. Each display panel includes a display area and a non-display area connected to the display area. The non-display area includes a first cut area and a second cut area located on both sides of the display area. Between two adjacent display panels, the first cut area is connected to the second cut area of ​​another display panel, and a cutting line exists between the first cut area and the connected second cut area. In a first direction parallel to the plane of the display panel and perpendicular to the cutting line, the width of the first cut area is greater than the width of the second cut area, and the distance between the cutting line and the two adjacent display areas is equal.

[0007] Furthermore, the non-display area further includes a first driving circuit area and a second driving circuit area respectively disposed on both sides of the display area in the first direction. The first driving circuit area is located between the first cutting area and the display area, and the second driving circuit area is located between the second cutting area and the display area. In the first direction, the width of the first driving circuit area is smaller than the width of the second driving circuit area. Preferably, the first driving circuit area includes a gate writing circuit. Preferably, the second driving circuit area includes a reset circuit and / or a light-emitting circuit.

[0008] Further, the second driving circuit area includes a reset circuit area and a light-emitting circuit area. The reset circuit area is located on the side of the second driving circuit area closer to the display area. The light-emitting circuit area is located on the side of the reset circuit area away from the display area. The reset circuit area contains a reset circuit, and the light-emitting circuit area contains a light-emitting circuit. Preferably, in the first direction, the width of the reset circuit area is equal to the width of the light-emitting circuit area.

[0009] Further, in the first direction, the width of the first driving circuit region is less than or equal to 300 micrometers, and the width of the second driving circuit region is less than or equal to 400 micrometers. Preferably, in the first direction, the width of the reset circuit region is less than or equal to 200 micrometers, and the width of the light-emitting circuit region is less than or equal to 200 micrometers.

[0010] Furthermore, the non-display area also includes at least two power circuit areas, which are respectively located between the first cutting area and the first driving circuit area and between the second cutting area and the second driving circuit area. Power circuit areas are provided with power traces. Preferably, the power signal line is used to transmit a low-level power signal. Preferably, in the first direction, the width of the power circuit area is greater than the width of the first driving circuit area. Preferably, in the first direction, the width of the power circuit area is less than the width of the second driving circuit area.

[0011] Furthermore, the non-display area also includes an encapsulation area, which surrounds the display area and is located on the side of the power circuit area away from the display area. Preferably, in the first direction, the width of the encapsulation area is greater than the width of the second driving circuit area. Preferably, in the first direction, the width of the power circuit area is less than or equal to 325 micrometers, and the width of the encapsulation area is less than 500 micrometers. Preferably, the encapsulation area includes glass glue.

[0012] Further, in the first direction, the widths of both the first and second cutting regions are smaller than the width of the first driving circuit. Preferably, in the first direction, the width of the first cutting region is less than or equal to 200 micrometers, and the width of the second cutting region is less than or equal to 100 micrometers. Preferably, in the first direction, the width of the first cutting region is less than or equal to 175 micrometers, and the width of the second cutting region is less than or equal to 75 micrometers.

[0013] The present invention also provides a display panel, the display panel including a display area and a non-display area connected to the display area, the non-display area including a first cut area and a second cut area located on both sides of the display area. In a first direction parallel to the arrangement direction of the first cut area and the second cut area, the width of the first cut area is greater than the width of the second cut area, and the distance between the side of the first cut area away from the display area and the side of the second cut area away from the display area and the display area is equal.

[0014] Further, the non-display area also includes a first driving circuit area and a second driving circuit area respectively disposed on both sides of the display area in the first direction. The first driving circuit area is located between the first cutting area and the display area, and the second driving circuit area is located between the second cutting area and the display area. In the first direction, the width of the first driving circuit area is smaller than the width of the second driving circuit area. Preferably, in the first direction, the widths of both the first cutting area and the second cutting area are smaller than the width of the first driving circuit area. Preferably, the non-display area also includes at least two power circuit areas, which are respectively disposed between the first cutting area and the first driving circuit area and between the second cutting area and the second driving circuit area. Preferably, in the first direction, the width of the power circuit area is greater than the width of the first driving circuit area. Preferably, in the second direction, the width of the power circuit area is smaller than the width of the second driving circuit area. Preferably, the non-display area also includes an encapsulation area, which is disposed around the display area and located on the side of the power circuit area away from the display area. Preferably, in the first direction, the width of the encapsulation area is greater than the width of the second driving circuit area.

[0015] The present invention also provides a display device, the display device comprising the display panel as described above.

[0016] The advantages of this invention are: the display panel motherboard, display panel, and display device of this invention, by unevenly splitting the cutting areas on both sides of the cutting line in the display panel motherboard and asymmetrically distributing the space in the non-display area of ​​the display panel, compress the width of the non-display area and the width of the cutting area of ​​the display panel without affecting the overall appearance symmetry of the display panel, thereby improving the utilization rate of the glass or substrate in the display panel motherboard, reducing the production cost of the product, and reducing the bezel of the display panel, further improving the effect of narrow bezel display. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the planar structure of the display panel motherboard in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of section A in the middle frame;

[0020] Figure 3 for Figure 1 Enlarged view of section A in the middle frame;

[0021] Figure 4 This is a schematic diagram of the partitioning of the display panel in an embodiment of the present invention.

[0022] The components in the diagram are shown below:

[0023] Display panel motherboard 1; Display panel 10;

[0024] Display area 11; Non-display area 12;

[0025] Cutting line L; First cutting zone 121;

[0026] Second cutting area 122; First driving circuit area 123;

[0027] Second drive circuit area 124; Reset circuit area 1241;

[0028] Light-emitting circuit area 1242; power supply circuit area 125;

[0029] Encapsulation area 126. Detailed Implementation

[0030] The following description, with reference to the accompanying drawings, illustrates preferred embodiments of the present invention, demonstrating its implementability. These embodiments provide a complete overview of the invention for those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0031] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of components is appropriately exaggerated in some places in the drawings.

[0032] Furthermore, the following descriptions of the embodiments of the invention are made with reference to the accompanying illustrations, illustrating specific embodiments in which the invention can be implemented. Directional terms used in this invention, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and "side," are merely directional references to the accompanying drawings. Therefore, the use of directional terms is for better and clearer explanation and understanding of the invention, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] When a component is described as being "on" another component, the component may be placed directly on the other component; alternatively, there may be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "installed to" or "connected to" another component, both can be understood as being directly "installed" or "connected" to, or as being indirectly "installed to" or "connected to" another component via an intermediate component.

[0034] In related display technologies, display panels are often tightly packed onto a single motherboard using close-packing technology before cutting and separation. This improves glass utilization and reduces product costs. This is especially true for wearable products, where the motherboard contains numerous screens; non-close-packing significantly reduces glass utilization. In rigid close-packing products, the minimum spacing between adjacent display panels needs to be 250 micrometers. This distance is limited by screen printing equipment and cannot be further reduced.

[0035] Based on the technical problems discovered in the aforementioned related display technologies, this embodiment of the invention provides a display panel motherboard 1, such as... Figure 1 As shown, the display panel motherboard 1 includes at least two display panels 10 arranged in an array. In this embodiment of the invention, two display panels 10 are used as an example, but in other embodiments of the invention, the number of display panels 10 included in the display panel motherboard 1 is not limited, and it can be three, four or more.

[0036] like Figure 1 and Figure 2As shown, two display panels 10 are arranged along a first direction X parallel to the plane in which the display panels 10 are located. Each display panel 10 includes a display area 11 and a non-display area 12 connected to the display area 11. The non-display areas 12 of two adjacent display panels 10 are interconnected to form a display panel motherboard 1. A cutting line L is provided between the non-display areas 12 of two adjacent display panels 10. This cutting line L extends along a second direction Y perpendicular to the first direction X (i.e., the second direction Y is parallel to the cutting line L). The corresponding display panel 10 is separated from the display panel motherboard 1 along the cutting line L using a cutting process.

[0037] The non-display area 12 of the display panel 10 includes a first cutting area 121 and a second cutting area 122. In the first direction X, the first cutting area 121 and the second cutting area 122 are located on opposite sides of the display area 11, and are also located on the side of the non-display area 12 furthest from the display area 11. Between two adjacent display panels 10 in the display panel motherboard 1, the first cutting area 121 of one display panel 10 is connected to the second cutting area 122 of the other display panel 10, and the cutting line L is located between the first cutting area 121 and the adjacent second cutting area 122.

[0038] The non-display area 12 of the display panel 10 also includes a first driving circuit area 123, a second driving circuit area 124, and at least two power circuit areas 125. The first driving circuit area 123 is provided with a gate writing circuit. The second driving circuit area 124 is provided with at least one of a reset circuit for transmitting a reset signal to the anode of the light-emitting device and a light-emitting circuit for transmitting an emitting signal (EM). The power circuit area 125 is provided with a power trace for transmitting a low-level power signal (ELVSS). In the first direction X, the first driving circuit area 123 and the second driving circuit area 124 are respectively located on both sides of the display area 11, and the first driving circuit area 123 and the second driving circuit area 124 are also respectively located on the side of the non-display area 12 closer to the display area 11, that is: the first driving circuit area 123 is located between the first cutting area 121 and the display area 11, and the second driving circuit area 124 is located between the second cutting area 122 and the display area 11. At least two power supply circuit areas 125 are respectively located between the first cutting area 121 and the first driving circuit area 123 and between the second cutting area 122 and the second driving circuit area 124.

[0039] Furthermore, such as Figure 3As shown, the second driving circuit area 124 can simultaneously include a reset circuit and a light-emitting circuit. In this case, the second driving circuit area 124 includes a reset circuit area 1241 and a light-emitting circuit area 1242. The reset circuit is located in the reset circuit area 1241, and the light-emitting circuit is located in the light-emitting circuit area 1242. The reset circuit area 1241 is located on the side of the second driving circuit area 124 closer to the display area 11, and the light-emitting circuit area 1242 is located on the side of the reset circuit area 1241 furthest from the display area 11.

[0040] The non-display area 12 of the display panel 10 also includes an encapsulation area 126, which surrounds the display area 11 and is located on the side of the power circuit area 125 away from the display area 11. The encapsulation area 126 contains glass glue (Frit), which is used to encapsulate and protect the display panel 10, extending its lifespan. The first cutting area 121 and the adjacent second cutting area 122 form the gap between the functional areas of the two display panels 10 in the display panel mother board 1.

[0041] Specifically, in the first direction X, the width W1 of the first cutting area 121 is greater than the width W2 of the second cutting area 122. That is, the distances between the two sides of the cutting line L and the encapsulation areas 126 of the adjacent display panel 10 are unequal, thereby compressing the bezel width of the display panel 10 (i.e., the width of the non-display area 12) while ensuring a cutting allowance. Simultaneously, the distances between the cutting line L and the two adjacent display areas 11 are equal, ensuring that the widths of the non-display areas 12 located on both sides of the display area 11 in the first direction X are the same, thus ensuring the left-right symmetry of the display panel 10 in terms of screen appearance. In the first direction X, the width W1 of the first cutting area 121 is less than or equal to 200 micrometers, and the width W2 of the second cutting area 122 is less than or equal to 100 micrometers. Preferably, in the first direction X, the width W1 of the first cutting area 121 is less than or equal to 175 micrometers, and the width W2 of the second cutting area 122 is less than or equal to 75 micrometers. For example, the width W1 of the first cutting region 121 in the first direction X can be 170 micrometers, 160 micrometers or 150 micrometers, and the width W2 of the second cutting region 122 in the first direction X can be 70 micrometers, 60 micrometers or 50 micrometers.

[0042] In the first direction X, the width W3 of the first driving circuit region 123 is less than the width W4 of the second driving circuit region 124, and the width W3 of the first driving circuit region 123 is greater than the width W1 of the first cutting region 121 and the width W2 of the second cutting region 122. Optionally, in the first direction X, the width W3 of the first driving circuit region 123 is less than or equal to 300 micrometers, and the width W4 of the second driving circuit region 124 is less than or equal to 400 micrometers. For example, the width W3 of the first driving circuit region 123 in the first direction X can be 200 micrometers, 190 micrometers, or 180 micrometers, and the width W4 of the second driving circuit region 124 in the first direction X can be 300 micrometers, 280 micrometers, or 260 micrometers. Further, in the second driving circuit region 124, the width W41 of the reset circuit region 1241 in the first direction X is equal to the width W42 of the light-emitting circuit region 1242 in the first direction X. Optionally, the widths W41 and W42 of the reset circuit region 1241 and the light-emitting circuit region 1242 in the first direction X are both less than or equal to 200 micrometers. For example, the width W41 of the reset circuit region 1241 in the first direction X can be 150 micrometers, 140 micrometers, or 130 micrometers, and the width W42 of the light-emitting circuit region 1242 in the first direction X can also be 150 micrometers, 140 micrometers, or 130 micrometers.

[0043] In the first direction X, the width W5 of the power supply circuit region 125 is greater than the width W3 of the first drive circuit region 123, and the width W5 of the power supply circuit region 125 is less than the width W4 of the second drive circuit region 124. Optionally, the width W5 of the power supply circuit region 125 in the first direction X is less than or equal to 325 micrometers. For example, the width W5 of the power supply circuit region 125 in the first direction X can be 225 micrometers, 220 micrometers, or 210 micrometers.

[0044] In the first direction X, the width W6 of the package region 126 is greater than the width of the second drive circuit region 124. Optionally, the width W6 of the package region 126 in the first direction X is less than 500 micrometers. For example, the width W6 of the package region 126 can be 450 micrometers, 400 micrometers, or 350 micrometers.

[0045] This embodiment of the invention also provides a display panel 10, which can be obtained by cutting the aforementioned display panel mother plate 1 along the cutting line L using a cutting process. Therefore, this display panel 10 is the same as the display panel 10 in the display panel mother plate 1. Figure 4As shown, the display panel 10 has a display area 11 and a non-display area 12 connected to the display area 11. The non-display area 12 includes a first cutting area 121 and a second cutting area 122 located on both sides of the display area 11, a first driving circuit area 123 located between the first cutting area 121 and the display area 11, a second driving circuit area 124 located between the second cutting area 122 and the display area 11, at least two power circuit areas 125 located between the first cutting area 121 and the first driving circuit area 123 and between the second cutting area 122 and the second driving circuit area 124, and an encapsulation area 126 surrounding the display area 11 and located on the side of the power circuit area 125 away from the display area 11. In the display panel 10, in the first direction X parallel to the arrangement direction of the first cutting area 121 and the second cutting area 122, the width W1 of the first cutting area 121 is greater than the width W2 of the second cutting area 122, and the distance between the side of the first cutting area 121 away from the display area 11 and the side of the second cutting area 122 away from the display area 11 and the display area 11 is equal, that is, the width of the non-display areas 12 located on both sides of the display area 11 in the first direction X is equal.

[0046] This invention also provides a display device, which can be an OLED display device, including the display panel 10 as described above, which provides a display image for the display device. The display device can be any display device with display functionality, such as a smart bracelet, VR device, mobile phone, tablet computer, etc.

[0047] In this embodiment of the invention, by asymmetrically designing the spatial distribution in the non-display area of ​​the display panel and unevenly splitting and matching the cutting areas on both sides of the cutting line, the width of the non-display area and the width of the cutting area of ​​the display panel are compressed without affecting the overall appearance symmetry of the display panel. This improves the utilization rate of the glass or substrate in the display panel motherboard, reduces the production cost of the product, and narrows the bezel of the display panel, further improving the effect of narrow bezel display.

[0048] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A display panel motherboard, characterized in that, include: At least two display panels arranged in an array, each display panel including a display area and a non-display area connected to the display area; The non-display area includes a first cutting area and a second cutting area located on both sides of the display area. Between two adjacent display panels, the first cutting area is connected to the second cutting area of ​​another display panel, and there is a cutting line between the first cutting area and the connected second cutting area. In a first direction parallel to the plane of the display panel and perpendicular to the cutting line, the width of the first cutting area is greater than the width of the second cutting area, and the distance between the cutting line and the two adjacent display areas is equal.

2. The display panel motherboard as described in claim 1, characterized in that, The non-display area further includes a first driving circuit area and a second driving circuit area respectively disposed on both sides of the display area in the first direction. The first driving circuit area is located between the first cutting area and the display area, and the second driving circuit area is located between the second cutting area and the display area. In the first direction, the width of the first driving circuit area is smaller than the width of the second driving circuit area; Preferably, the first driving circuit area is provided with a gate writing circuit; Preferably, the second driving circuit area is provided with a reset circuit and / or a light-emitting circuit.

3. The display panel motherboard as described in claim 2, characterized in that, The second driving circuit area includes: The reset circuit area is located on the side of the second driving circuit area closer to the display area; The light-emitting circuit area is located on the side of the reset circuit area away from the display area; The reset circuit area is provided with a reset circuit, and the light-emitting circuit area is provided with a light-emitting circuit; Preferably, in the first direction, the width of the reset circuit area is equal to the width of the light-emitting circuit area.

4. The display panel motherboard as described in claim 3, characterized in that, In the first direction, the width of the first driving circuit region is less than or equal to 300 micrometers, and the width of the second driving circuit region is less than or equal to 400 micrometers; Preferably, in the first direction, the width of the reset circuit area is less than or equal to 200 micrometers, and the width of the light-emitting circuit area is less than or equal to 200 micrometers.

5. The display panel motherboard as described in claim 2, characterized in that, The non-display area also includes at least two power circuit areas, which are respectively located between the first cutting area and the first driving circuit area and between the second cutting area and the second driving circuit area. Power circuit areas are provided with power traces. Preferably, the power signal line is used to transmit a low-level power signal; Preferably, in the first direction, the width of the power supply circuit area is greater than the width of the first drive circuit area; Preferably, in the first direction, the width of the power supply circuit area is smaller than the width of the second drive circuit area.

6. The display panel motherboard as described in claim 5, characterized in that, The non-display area also includes an encapsulation area, which surrounds the display area and is located on the side of the power circuit area away from the display area; Preferably, in the first direction, the width of the packaging area is greater than the width of the second driving circuit area; Preferably, in the first direction, the width of the power circuit area is less than or equal to 325 micrometers, and the width of the package area is less than 500 micrometers; Preferably, the encapsulation area includes glass glue.

7. The display panel motherboard as described in claim 2, characterized in that, In the first direction, the widths of both the first cutting area and the second cutting area are smaller than the width of the first driving circuit; Preferably, in the first direction, the width of the first cutting area is less than or equal to 200 micrometers, and the width of the second cutting area is less than or equal to 100 micrometers; Preferably, in the first direction, the width of the first cutting area is less than or equal to 175 micrometers, and the width of the second cutting area is less than or equal to 75 micrometers.

8. A display panel, characterized in that, It includes a display area and a non-display area connected to the display area, wherein the non-display area includes a first cutting area and a second cutting area located on both sides of the display area; In a first direction parallel to the arrangement direction of the first and second cutting areas, the width of the first cutting area is greater than the width of the second cutting area, and the distance between the side of the first cutting area away from the display area and the side of the second cutting area away from the display area and the display area are equal.

9. The display panel as described in claim 8, characterized in that, The non-display area further includes a first driving circuit area and a second driving circuit area respectively disposed on both sides of the display area in the first direction. The first driving circuit area is located between the first cutting area and the display area, and the second driving circuit area is located between the second cutting area and the display area. In the first direction, the width of the first driving circuit area is smaller than the width of the second driving circuit area; Preferably, in the first direction, the widths of both the first cutting area and the second cutting area are smaller than the width of the first driving circuit; Preferably, the non-display area further includes at least two power circuit areas, which are respectively located between the first cutting area and the first driving circuit area and between the second cutting area and the second driving circuit area; Preferably, in the first direction, the width of the power supply circuit area is greater than the width of the first drive circuit area; Preferably, in a second direction parallel to the cutting line, the width of the power supply circuit area is smaller than the width of the second drive circuit area; Preferably, the non-display area further includes an encapsulation area, which is disposed around the display area and located on the side of the power circuit area away from the display area; Preferably, in the first direction, the width of the package area is greater than the width of the second driving circuit area.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 8-9.

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