Display panel and wearable product
By setting up non-overlapping capacitor compensation units and line-changing vias in the frame area of the display panel, the problem of poor conductivity of narrow frame products is solved, and the performance improvement of wearable products is achieved.
Patent Information
- Application Number
- CN202411260637.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-01-03
AI Technical Summary
Wearing products with narrow frames have poor conductivity, mainly because the overlap between the capacitance compensation unit and the line-changing vias affects the conductivity due to insufficient space in the frame area.
Design a display panel, by setting a capacitance compensation unit in the frame area and not overlapping it with the positive projection area of the line change via on the substrate, the size of the capacitance compensation unit becomes smaller as the available space in the frame area becomes smaller. A compensation capacitor is formed using a multi-layer metal structure and an insulating layer to ensure that the positions of the capacitance compensation unit and the line-changing vias are staggered.
It effectively avoids the influence of the capacitance compensation unit on the membrane layer of the switching hole, improves the conductivity, adapts to the needs of narrow frame products, and ensures the performance of wearable products.
Smart Images
Figure CN119255636A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of display technology, and in particular to a display panel and a wearable product. Background Art
[0002] With the continuous development of display technology, OLED display technology has been continuously applied to smaller wearable products, such as wearable smart watches, etc. However, with the continuous iteration of wearable products, users have higher and higher demands for narrow borders, but wearable products with narrow borders often have poor conductivity problems. Summary of the invention
[0003] Based on this, it is necessary to provide a display panel and a wearable product to address the above problems.
[0004] According to a first aspect of an embodiment of the present application, there is provided a display panel, including:
[0005] A substrate, divided into a display area and a frame area outside the display area;
[0006] A capacitance compensation unit, located in the frame area, for performing capacitance compensation on a data signal line, wherein the data signal line is used to provide display data for the display area;
[0007] A first signal line and a second signal line, wherein the first signal line and the second signal line are electrically connected through a line-changing via hole provided in the frame area;
[0008] The capacitance compensation unit has no overlap with the orthographic projection area formed by the line-changing via on the substrate.
[0009] In one of the embodiments, the size of the capacitance compensation unit is gradually changing.
[0010] In one of the embodiments, the size of the capacitance compensation unit decreases as the available space of the border area decreases, and the orthographic projection area of the available space on the substrate is located outside the orthographic projection area of the line-changing via on the substrate.
[0011] In one of the embodiments, the capacitance compensation unit includes: at least two metal layers that are directly opposite to each other at least partially in a direction perpendicular to the substrate, and two adjacent metal layers relatively form a compensation capacitor.
[0012] In one embodiment, the capacitance compensation unit includes a first metal layer, a second metal layer and a third metal layer that are opposite to each other in at least a partial area in a direction perpendicular to the substrate, the first metal layer and the second metal layer form a first compensation capacitor relative to each other, and the second metal layer and the third metal layer form a second compensation capacitor relative to each other.
[0013] In one embodiment, the first metal layer includes an M1 metal layer, the second metal layer includes an M2 metal layer, and the third metal layer includes a gate oxide layer.
[0014] In one embodiment, the capacitance compensation unit includes a plurality of capacitance compensation units arranged at intervals, each of the capacitance compensation units includes the first metal layer, the second metal layer and the third metal layer, the first metal layer in each of the capacitance compensation units is prepared on the same layer, the second metal layer in each of the capacitance compensation units is prepared on the same layer, and the third metal layer in each of the capacitance compensation units is prepared on the same layer.
[0015] In one embodiment, the first signal line includes a signal line in a GIP unit, and the second signal line includes a signal line in the display area.
[0016] According to a second aspect of an embodiment of the present application, a wearable product is provided, comprising the display panel as described above.
[0017] In the display panel and wearable product provided by the embodiments of the present application, the capacitance compensation unit and the line-switching via hole have no overlap in the orthographic projection area formed on the substrate, thereby avoiding the capacitance compensation unit from affecting the topography of the film layer of the line-switching via hole, thereby effectively improving the problem of poor conductivity. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of the overlap of the capacitor compensation unit and the line-changing via hole in the border area in the conventional technology;
[0019] Figure 2 A schematic diagram of the wiring of a wearable product in a specific example;
[0020] Figure 3 is a structural schematic diagram of a wearable product in a specific example;
[0021] Figure 4 A schematic diagram of the structure of a border area of a display panel provided in an embodiment of the present application;
[0022] Figure 5 A schematic diagram of the structure of a border area of a display panel provided in an embodiment of the present application;
[0023] Figure 6 A schematic diagram of the structure of a capacitance compensation unit in a border area of a display panel provided in an embodiment of the present application.
[0024] Description of reference numerals:
[0025] 100, display area; data, data signal line; 200, frame area; 210, capacitor compensation unit; 211, first metal layer; 212, second metal layer; 213, third metal layer; 214, capacitor compensation unit; 220, line switching via. DETAILED DESCRIPTION
[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to understand the disclosure of the present application more thoroughly and comprehensively.
[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0030] With the continuous development of display technology, OLED display technology has been continuously applied to smaller wearable products, such as wearable smart watches, etc. However, with the continuous iteration of wearable products, users have higher and higher demands for narrow borders, but wearable products with narrow borders often have poor conductivity problems.
[0031] Reference Figure 1After research, the applicant found that the reason why narrow-frame wearable products have poor conductivity is actually due to the limited space at the frame. The space for setting the capacitance compensation unit 210 is limited, and there is often a line-changing via 220 in the frame area 200 to achieve the connection between various signal lines. This will cause the capacitance compensation unit 210 and the line-changing via 220 in the frame area 200 to overlap in the direction perpendicular to the substrate ( Figure 1 The area within the dotted box in the middle), thereby affecting the film layer topography of the line-changing via 220, and further affecting the conductivity.
[0032] In order to solve the above problems, embodiments of the present application provide a display panel and a wearable product.
[0033] In one embodiment, a display panel is provided that can optimize a capacitance compensation solution and improve the problem of poor conductivity caused by insufficient space in a border area.
[0034] The display panel provided in this embodiment includes a substrate, which is divided into a display area 100 and a frame area 200 outside the display area 100, and a capacitance compensation unit 210 is arranged in the frame area 200, and the capacitance compensation unit 210 is used to perform capacitance compensation on the data signal line data, wherein the data signal line data is used to provide display data for the display area 100. The display panel also includes a first signal line and a second signal line, and the first signal line and the second signal line can be electrically connected through a line-changing via 220 arranged in the frame area 200. The capacitance compensation unit 210 and the line-changing via 220 have no overlap in the orthographic projection area formed on the substrate.
[0035] Specifically, a pixel driving unit is disposed in the display area 100 , and the data signal line data is connected to the pixel driving unit for transmitting display data to the pixel driving unit, and then the pixel driving unit drives the pixel units in the display area 100 to light up or turn off.
[0036] Taking wearable products as an example, due to the small size of wearable products, the capacitance difference of data signal lines data in adjacent columns is large, which requires compensation of the capacitance of at least some columns of data signal lines data to control the capacitance difference of each column of data signal lines data within a small range. For example, Figure 2 and Figure 3 2 is a schematic diagram of a wearable watch. Capacitance compensation units 210 may be disposed at various locations of the upper arc frame of the circular wearable watch to perform capacitance compensation on the data signal lines data of the corresponding columns.
[0037] The signal lines on the display panel are often electrically connected through the line-changing via 220. In this embodiment, the two signal lines that need to be electrically connected through the line-changing via 220 are defined as the first signal line and the second signal line. In the conventional technology, since the line-changing via 220 between the first signal line and the second signal line may be located in the border area 200, and the border area 200 is provided with the capacitance compensation unit 210, the space of the border area 200 is small, which may cause the line-changing via 220 and the capacitance compensation unit 210 to overlap in space.
[0038] For example, the first signal line may be a signal line in a GIP unit connected to a pixel driving unit in the display area 100, and the second signal line may be a signal line in a pixel driving unit in the display area 100. At this time, the line-changing via 220 between the first signal line and the second signal line is often located in the frame area 200.
[0039] Reference Figure 4 and Figure 5 In this embodiment, the position of the capacitor compensation unit 210 is adjusted so that the capacitor compensation unit 210 and the line-changing via 220 have no overlap in the orthographic projection area formed on the substrate. This can prevent the capacitor compensation unit 210 from affecting the topography of the film layer of the line-changing via, thereby effectively improving the problem of poor conductivity.
[0040] In one embodiment, the size of the capacitance compensation unit 210 is gradually changing.
[0041] In conventional technology, capacitance compensation is often performed in an equal manner, which is not flexible enough and easily overlaps with the line-changing hole in a direction perpendicular to the substrate. In this embodiment, the size of the capacitance compensation unit 210 is set to change in a gradual trend to flexibly adapt to the available space of the border area 200, so as to facilitate interleaving with the position of the line-changing hole in a direction perpendicular to the substrate.
[0042] In one embodiment, referring to Figure 4 The size of the capacitance compensation unit 210 decreases as the available space of the border area 200 decreases, and the orthographic projection area of the available space on the substrate is located outside the orthographic projection area of the line-changing via 220 on the substrate, thereby ensuring that the orthographic projection area of the capacitance compensation unit 210 on the substrate always falls within the area outside the orthographic projection area of the line-changing via 220 on the substrate.
[0043] In one embodiment, the capacitance compensation unit 210 includes: at least two metal layers that are at least partially opposite to each other in a direction perpendicular to the substrate, and two adjacent metal layers form a compensation capacitor relative to each other.
[0044] In this embodiment, there is an insulating layer between two adjacent metal layers in the capacitance compensation unit 210, so that the two adjacent metal layers can form a compensation capacitor relative to each other. The number of metal layers in the capacitance compensation unit 210 can be two, three, four, five, etc., which can be determined according to actual needs.
[0045] In the present embodiment, the metal layer in the capacitance compensation unit 210 can be prepared in the same layer as the film layer of the display area 100, that is, there is no need to prepare an additional film layer. For example, the metal layer in the capacitance compensation unit 210 can be made of the same material and prepared in the same layer as the M1 metal layer in the pixel driving unit in the display area 100, and / or made of the same material and prepared in the same layer as the M2 metal layer in the pixel driving unit in the display area 100, and / or made of the same material and prepared in the same layer as the gate oxide layer in the pixel driving unit in the display area 100. Among them, the material of the M1 metal layer and the M2 metal layer can be Mo or the like, and the material of the gate oxide layer can be Ti or Mo or the like. In addition, the insulating layer between adjacent metal layers can also be made of the same material and prepared in the same layer as the insulating film layer in the display area 100. In the present embodiment, the M1 metal layer is generally the first gate metal layer, and the M2 metal layer is generally the second gate metal layer.
[0046] Reference Figure 6 In one embodiment, the capacitance compensation unit 210 includes a first metal layer 211, a second metal layer 212 and a third metal layer 213 that are opposite to each other in at least a partial area in a direction perpendicular to the substrate, and the first metal layer 211 and the second metal layer 212 form a first compensation capacitor relative to each other, and the second metal layer 212 and the third metal layer 213 form a second compensation capacitor relative to each other.
[0047] The three-layer metal layer arrangement can ensure the compensation capacitor size and capacitance compensation effect, and will not increase the volume of the display panel too much. There is an insulating layer between the first metal layer 211 and the second metal layer 212, and between the second metal layer 212 and the third metal layer 213.
[0048] In one embodiment, the first metal layer 211 includes an M1 metal layer, the second metal layer 212 includes an M2 metal layer, and the third metal layer 213 includes a gate oxide layer. That is, when the M1 metal layer in the display area 100 is prepared, the first metal layer 211 in the capacitance compensation unit 210 in the frame area 200 can be formed simultaneously, when the M2 metal layer in the display area 100 is prepared, the second metal layer 212 in the capacitance compensation unit 210 in the frame area 200 can be formed simultaneously, and when the gate oxide layer in the display area 100 is prepared, the third metal layer 213 in the capacitance compensation unit 210 in the frame area 200 can be formed simultaneously, thereby simplifying the preparation process of the capacitance compensation unit 210.
[0049] Reference Figure 5 In one embodiment, the capacitance compensation unit 210 includes a plurality of capacitance compensation units 214 arranged at intervals, each of the capacitance compensation units 214 includes the first metal layer 211, the second metal layer 212 and the third metal layer 213, the first metal layer 211 in each of the capacitance compensation units 214 are prepared on the same layer, the second metal layer 212 in each of the capacitance compensation units 214 are prepared on the same layer, and the third metal layer 213 in each of the capacitance compensation units 214 are prepared on the same layer.
[0050] That is, the capacitance compensation unit 210 is configured as a plurality of independent capacitance compensation units 214, thereby flexibly adjusting the capacitance compensation unit 210. The structures of the capacitance compensation units 214 may be the same, for example, each capacitance compensation unit 214 includes a stacked first metal layer 211-insulating layer-second metal layer 212-insulating layer-third metal layer 213.
[0051] When the capacitance compensation unit 210 includes a plurality of independent capacitance compensation units 214, the capacitance compensation units 214 at various locations can be increased or decreased according to actual needs. Figure 5 When the orthographic projection area of a capacitor compensation unit 214 on the substrate overlaps with the orthographic projection area of the line-changing via 220 on the substrate, the position of the capacitor compensation unit 214 can be adjusted separately, or the capacitor compensation unit 214 can be cancelled.
[0052] In one embodiment, a wearable product is provided, comprising the display panel provided in the above embodiment, wherein the wearable product may include a wearable smart watch, etc.
[0053] For specific contents of the display panel, reference may be made to the specific description of the display panel provided in the aforementioned embodiment, which will not be repeated here.
[0054] In the display panel of the wearable product provided in this embodiment, the orthographic projection area formed by the capacitance compensation unit 210 on the substrate does not overlap with the orthographic projection area formed by the line-changing via 220 on the substrate, thereby avoiding the capacitance compensation unit 210 from affecting the topography of the film layer of the line-changing via, thereby effectively improving the problem of poor conductivity and ensuring the performance of the wearable product.
[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.
Claims
1. A display panel, characterized in that: include: A substrate, divided into a display area and a frame area outside the display area; A capacitance compensation unit, located in the frame area, for performing capacitance compensation on a data signal line, wherein the data signal line is used to provide display data for the display area; A first signal line and a second signal line, wherein the first signal line and the second signal line are electrically connected through a line-changing via hole provided in the frame area; The capacitance compensation unit has no overlap with the orthographic projection area formed by the line-changing via on the substrate.
2. The display panel according to claim 1, characterized in that: The size of the capacitance compensation unit is gradually changing.
3. The display panel according to claim 2, characterized in that: The size of the capacitance compensation unit decreases as the available space of the border area decreases, and the orthographic projection area of the available space on the substrate is located outside the orthographic projection area of the line-changing via on the substrate.
4. The display panel according to claim 1, characterized in that: The capacitance compensation unit comprises: in a direction perpendicular to the substrate, at least two metal layers are directly opposite to each other at least partially, and two adjacent metal layers form a compensation capacitor relatively.
5. The display panel according to claim 4, characterized in that: The capacitance compensation unit includes a first metal layer, a second metal layer and a third metal layer, at least partially facing each other in a direction perpendicular to the substrate, the first metal layer and the second metal layer form a first compensation capacitor, and the second metal layer and the third metal layer form a second compensation capacitor.
6. The display panel according to claim 5, characterized in that: The first metal layer includes an M1 metal layer, the second metal layer includes an M2 metal layer, and the third metal layer includes a gate oxide layer.
7. The display panel according to claim 5, characterized in that: The capacitance compensation unit includes a plurality of capacitance compensation units arranged at intervals, each of the capacitance compensation units includes the first metal layer, the second metal layer and the third metal layer, the first metal layer in each of the capacitance compensation units is prepared on the same layer, the second metal layer in each of the capacitance compensation units is prepared on the same layer, and the third metal layer in each of the capacitance compensation units is prepared on the same layer.
8. The display panel according to claim 1, characterized in that: The first signal line includes a signal line in a GIP unit, and the second signal line includes a signal line in the display area.
9. A wearable product, characterized in that: Comprising the display panel as described in any one of claims 1-8.