Display substrate, display panel and electronic device

Abstract

The present disclosure relates to a display substrate, a display panel and an electronic device. The display substrate comprises a substrate, a pixel array on the substrate, a signal trace on the substrate and electrically connected to the pixel array, for transmitting a signal to the pixel array, a detection trace on the substrate and electrically connected to the signal trace, for detecting the signal transmitted by the signal trace, and a switch assembly connected to the signal trace and the detection trace, for disconnecting the electrical connection between the detection trace and the signal trace. The display substrate provided by the embodiments of the present disclosure can reduce the risk of static electricity and short circuit caused by the detection trace remaining on the cutting end surface of the display substrate, and improve the product yield of the display panel prepared from the cut display substrate.

Description

Technical Field

[0001] This disclosure relates to the technical field of display panels, and more particularly to a display substrate, display panel, and electronic device. Background Technology

[0002] Currently, in the manufacturing process of display panels for electronic devices such as laptops or televisions, array test traces are usually set around the array substrate. This allows for display testing before the array substrate is cut and manufactured, enabling early identification of defects in the corresponding display panel and subsequent repair or interception, effectively improving the yield of the display panel.

[0003] However, during the cutting process of the array substrate, these array detection traces may remain on the cut end face of the substrate, which can easily cause electrostatic discharge damage, leading to short circuits in the array detection traces and consequently causing display abnormalities in the display panel. Utility Model Content

[0004] To overcome the problems existing in related technologies, this disclosure provides a display substrate, a display panel, and an electronic device. The display substrate proposed in this disclosure reduces the risk of static electricity and short circuits introduced by residual detection traces on the dicing end face of the display substrate, thereby improving the product yield of the display panel fabricated from the display substrate.

[0005] A first aspect of this disclosure provides a display substrate, comprising at least:

[0006] Substrate;

[0007] A pixel array is located on the substrate;

[0008] Signal traces are located on the substrate and electrically connected to the pixel array for transmitting signals to the pixel array;

[0009] A detection trace, located on the substrate and electrically connected to the signal trace, is used to detect the signal transmitted by the signal trace;

[0010] A switching assembly, connected to the signal trace and the detection trace, is used to disconnect the electrical connection between the detection trace and the signal trace.

[0011] In some embodiments, there are multiple detection traces, and there is a gap between two adjacent detection traces. The multiple detection traces are used to detect the signals transmitted by the signal traces connected to each pixel unit in the pixel array.

[0012] The switching assembly is connected between the plurality of detection traces and the signal traces, and is used to disconnect the electrical connection between the plurality of detection traces and the signal traces.

[0013] In some embodiments, the switching assembly includes a plurality of controlled switches;

[0014] At least one controlled switch is connected between each of the detection traces and the signal traces.

[0015] In some embodiments, the switching assembly includes a switching chip;

[0016] The first end of the switch chip is connected to the signal trace, and the second end of the switch chip is connected to the multiple detection traces.

[0017] In some embodiments, the display substrate further includes a first dielectric layer and a second dielectric layer stacked on the substrate, wherein the second dielectric layer is located between the substrate and the first dielectric layer;

[0018] The detection trace is located on the side of the first dielectric layer away from the second dielectric layer.

[0019] In some embodiments, the switching assembly includes a top-gate transistor;

[0020] The gate of the top-gate transistor is disposed between the first dielectric layer and the second dielectric layer.

[0021] In some embodiments, the switching assembly includes a bottom-gate transistor;

[0022] The gate of the bottom gate transistor is disposed on the side of the second dielectric layer facing the substrate.

[0023] In some embodiments, the substrate includes a first region and a second region disposed adjacent to each other;

[0024] The pixel array and the signal trace are both located in the first region, while the detection trace and the switching component are both located in the second region.

[0025] In some embodiments, the display substrate further includes:

[0026] The drive trace is located on the substrate;

[0027] The detection trace is electrically connected to the drive trace and is used to detect the drive signal transmitted by the drive trace.

[0028] A second aspect of this disclosure provides a display panel, the display panel comprising:

[0029] Circuit board;

[0030] The display substrate as described in the first aspect is located on the circuit board; the signal traces and detection traces in the display substrate are electrically connected to the circuit board.

[0031] A third aspect of this disclosure provides an electronic device, the electronic device comprising:

[0032] Mid-frame;

[0033] The display panel as described in the second aspect is mounted on the middle frame.

[0034] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0035] This disclosure provides a display substrate, a display panel, and an electronic device. The display substrate includes: a substrate; a pixel array located on the substrate; signal traces located on the substrate and electrically connected to the pixel array for transmitting signals to the pixel array; detection traces located on the substrate and electrically connected to the signal traces for detecting the signals transmitted by the signal traces; and a switching assembly connected to the signal traces and the detection traces for disconnecting the electrical connection between the detection traces and the signal traces. The display substrate proposed in this disclosure can add a switching assembly connecting the signal traces and the detection traces to the display substrate. By controlling the switching state of the switching assembly, the electrical connection between the detection traces and the signal traces can be disconnected, thereby reducing the risk of static electricity and short circuits introduced by residual detection traces on the diced end face of the display substrate, and improving the product yield of the display panel prepared from the diced display substrate.

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0038] Figure 1 This is a schematic diagram of the structure of a display substrate provided according to an exemplary embodiment. Figure 1 .

[0039] Figure 2 This is a schematic diagram of the structure of a conventional display substrate provided according to an exemplary embodiment.

[0040] Figure 3 This is a schematic diagram of detecting electrostatic discharge damage to traces in a conventional display substrate according to an exemplary embodiment.

[0041] Figure 4This is a schematic diagram of the structure of a display substrate provided according to an exemplary embodiment. Figure 2 .

[0042] Figure 5a This is a schematic diagram of the top gate transistor in a display substrate according to an exemplary embodiment.

[0043] Figure 5b This is a schematic diagram of the structure of a bottom gate transistor in a display substrate according to an exemplary embodiment.

[0044] Figure 6 This is a schematic diagram of the structure of an electronic device provided according to an exemplary embodiment.

[0045] Figures 1 to 5b The attached figure labels are:

[0046] 10-Display substrate, 11-Substrate, 12-Signal trace, 13-Detection trace, 14-Switch assembly, 141-Controlled switch, 15-Drive trace, 16-First dielectric layer, 17-Second dielectric layer, 142-Gate of top gate transistor, 143-Gate of bottom gate transistor, 20-Traditional array substrate, 21-Array Test trace, 21-GOA trace. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of structures consistent with some aspects of this disclosure as detailed in the appended claims.

[0048] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0049] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0050] The technical solutions provided by the various embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0051] Figure 1 This is a schematic diagram of the structure of a display substrate provided according to an exemplary embodiment. Figure 1 ,like Figure 1 As shown, the display substrate 10 may include:

[0052] Substrate 11;

[0053] Pixel array (in) Figure 1 (Not shown in the image), located on substrate 11;

[0054] Signal trace 12 is located on substrate 11 and is electrically connected to the pixel array for transmitting signals to the pixel array;

[0055] The detection trace 13 is located on the substrate 11 and is electrically connected to the signal trace 12, and is used to detect the signal transmitted by the signal trace 12.

[0056] The switch assembly 14 is connected to the signal trace 12 and the detection trace 13 and is used to disconnect the electrical connection between the detection trace 13 and the signal trace 12.

[0057] In this embodiment of the disclosure, the display substrate described above can be applied to display fields such as liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs). The display substrate can be a flat plate with a specific pattern and structure, such as an array substrate, on which multiple electronic components are integrated, such as thin film transistors (TFTs), pixel electrodes, data lines, or gate lines.

[0058] Here, the aforementioned substrate can be the base material layer of the display substrate, serving as a support and base for other material layers and electronic components on the display substrate.

[0059] It should be noted that the specific material of the substrate can be set according to the actual application scenario, and this disclosure does not impose any limitations. For example, the substrate material can be a composite material such as glass, quartz, silicon, plastic, or glass fiber reinforced plastic.

[0060] In some embodiments, the substrate may include a first region and a second region disposed adjacent to each other;

[0061] The pixel array and signal traces are located in the first region, while the detection traces and switching components are located in the second region.

[0062] In this way, by placing the pixel array and signal traces in the first region of the substrate and the detection traces and switching components in the second region of the substrate, the display effect of the display panel fabricated by the display substrate can be improved, thus avoiding the detection traces and switching components from affecting the display of the pixel array.

[0063] The first region can be an area on the substrate of the display substrate used to house devices capable of displaying images and related components; for example, a pixel array and signal traces electrically connected to the pixel array can be disposed in the first region. The pixel array can include multiple pixel units, each pixel unit including a light-emitting element and corresponding driving circuits, and each pixel unit in the pixel array is used for image display; the signal traces can transmit control signals and data signals to each pixel unit.

[0064] The second region can be an area on the substrate of the display substrate that is used for wiring or placing electronic components and does not display images. The second region contains multiple electronic components and connection lines, such as gate drive on array (GOA), data line drive circuit, power supply line or detection line, etc. These components and connection lines are responsible for transmitting signals from the outside to the pixel array in the first region through the signal lines in the first region and controlling the light emission state of the pixel array.

[0065] Here, the aforementioned test traces are used to test the pixel array after the array fabrication process of the display substrate is completed and the pixel array in the first region has a complete electrical functional structure.

[0066] Understandably, the detection traces can extend into the first area to connect with the signal traces within the first area, thereby enabling the detection of signals transmitted by the pixel array through the signal traces. This allows for the early identification of defects or flaws in the display substrate and the implementation of repair or interception operations, effectively improving the yield of the display panel fabricated from the display substrate and ensuring the quality of the display panel.

[0067] It should be noted that the above-mentioned test traces may include a first part located in the second region of the substrate, and a second part located on the display substrate motherboard; the second part is connected to the first part and connected to the test pads of the display panel corresponding to each display substrate on the display substrate motherboard. The second part may be a peripheral trace shared by the display substrate motherboard in the test process before the display substrate is cut.

[0068] In this embodiment of the disclosure, the switching component can be an electronic component that opens the signal trace and the detection trace, interrupts the current, or allows the current to flow to other lines; for example, the switching component can include: TFT switching transistor, field-effect transistor, or switching chip, etc.

[0069] Here, the switching component can be in different switching states; for example, the switching component can be in a closed state or an open state. When the switching component is in the closed state, the connection between the signal trace and the detection trace can be in a conductive state; when the switching component is in the open state, the connection between the signal trace and the detection trace can be in a disconnected state.

[0070] Understandably, after the display substrate has been inspected using the detection traces but before it is cut, the switch assembly can be controlled to be in an open state to disconnect the electrical connection between the detection traces and the signal traces. Alternatively, after the display substrate is cut but before it is fabricated into a display panel, the switch assembly can also be controlled to be in an open state to disconnect the electrical connection between the detection traces and the signal traces. However, after the display substrate is fabricated but before inspection is completed, the switch assembly can be controlled to be in a closed state to connect the electrical connection between the detection traces and the signal traces, thereby enabling the detection of the signal transmitted by the pixel array via the signal traces, i.e., the display effect of the display substrate.

[0071] It should be noted that the specific number of switch components can be set according to the actual application scenario, and this disclosure embodiment does not impose any limitations. For example, the number of switch components can be the same as the number of detection traces, or the number of switch components can be different from the number of detection traces.

[0072] In some embodiments, such as Figure 1 As shown, the display substrate 10 further includes:

[0073] Drive trace 15 is located on substrate 11;

[0074] The detection trace 13 is electrically connected to the drive trace 15 and is used to detect the drive signal transmitted by the drive trace 15.

[0075] In this way, by setting up detection traces connected to the drive traces, the drive signals transmitted by the drive traces can be detected, thereby enabling early identification of defects or malfunctions in the display substrate and allowing for repair or interception operations. This effectively improves the yield of the display panel fabricated from the display substrate and ensures the quality of the display panel.

[0076] In this embodiment of the disclosure, the aforementioned driving trace can be a GOA trace, which can be used to connect various units in the GOA circuit to realize the transmission of gate driving signals of each pixel unit in the pixel array on the display substrate. The GOA circuit can be located on the display substrate of the display panel and is used to control the switching signals of each row of pixel TFTs in the pixel array.

[0077] Here, the GOA traces can be located in the second region of the substrate, close to the edge of the effective display area (A / A area) in the first region. This is because the GOA circuit needs to connect the gate scan lines of each row, which are located outside the effective display area of ​​the display panel. The GOA traces can transmit the gate drive signals generated by the GOA circuit to the pixel TFTs of each row, thereby controlling the on and off of each pixel unit in the pixel array.

[0078] In related technologies, display panel manufacturers are generally building high-generation production lines. The reason for building high-generation OLED or LCD lines is that, compared with low-generation lines, high-generation lines can produce larger OLED or LCD panels, providing a wider field of view and higher resolution, thereby improving product quality and user experience. At the same time, high-generation lines produce more units at a time, which can spread fixed costs, reduce the manufacturing cost per panel, and improve production efficiency, drive technological innovation, thereby meeting market demand and maintaining competitiveness.

[0079] However, for products with large display panels, such as laptops or televisions, even with high-generation production lines, the number of display panels that can be arranged on the entire array substrate is less than that of small and medium-sized products like mobile phones or tablets due to the large area of ​​the display panels themselves. If the defect density ratio in the array substrate is uniform, the yield of large-sized products will be significantly lower than that of small and medium-sized products from the same generation line. Therefore, in the design process of array substrates for large-sized products, array test traces are usually placed around the array substrate. This allows for display inspection before the array substrate is cut and manufactured, enabling early identification and repair or interception of defects in the corresponding display panels, effectively improving the display panel yield.

[0080] like Figure 2As shown, Array Test traces 21 and GOA traces 22 are provided on the entire conventional array substrate motherboard. After the conventional array substrate 20 is cut, the Array Test traces 21 will remain on the cut end face of the substrate. Figure 3 As shown, the Array Test traces 21 remaining on the cut end face of the substrate are prone to electrostatic discharge (ESD) damage, which can cause abnormal short circuits in the signals of the Array Test traces 21, and consequently cause display abnormalities in the display panel.

[0081] Based on this, embodiments of this disclosure provide a display substrate, comprising: a substrate; a pixel array located on the substrate; signal traces located on the substrate and electrically connected to the pixel array for transmitting signals to the pixel array; detection traces located on the substrate and electrically connected to the signal traces for detecting the signals transmitted by the signal traces; and a switching assembly connected to the signal traces and the detection traces for disconnecting the electrical connection between the detection traces and the signal traces. The display substrate proposed in this disclosure can add a switching assembly connecting the signal traces and the detection traces to the display substrate. By controlling the switching state of the switching assembly, the electrical connection between the detection traces and the signal traces can be disconnected, thereby reducing the risk of static electricity and short circuits introduced by residual detection traces on the dicing end face of the display substrate, and improving the product yield of the display panel prepared from the diced display substrate.

[0082] Figure 4 This is a schematic diagram of the structure of a display substrate provided according to an exemplary embodiment. Figure 2 ,like Figure 4 As shown, there are multiple detection lines 13. There is a gap between two adjacent detection lines 13. The multiple detection lines 13 are used to detect the signals transmitted by the signal lines 12 connected to each pixel unit in the pixel array.

[0083] The switch assembly 14 is connected between multiple detection lines 13 and signal lines 12, and is used to disconnect the electrical connection between the multiple detection lines 13 and signal lines 12.

[0084] In this way, by setting up a switching component connected between multiple detection traces and signal traces, the electrical connection between multiple detection traces and signal traces can be disconnected by controlling the switching state of the switching component. This can effectively reduce the risk of static electricity and short circuits introduced by the detection traces remaining on the cutting end face of the display substrate, and further improve the product yield of the display panel made from the display substrate.

[0085] In this embodiment of the disclosure, the multiple detection traces may include, but are not limited to: gate high voltage (VGH) traces, gate low voltage (VGL) traces, clock signal (CLK) traces, or start vertical timing (STV) traces, etc.

[0086] Here, in the driving circuit of an OLED or LCD display panel, the voltage of the signal transmitted in the VGH trace can be used to charge and turn on the TFT gate capacitor on the display substrate, maintaining the capacitor voltage for one field cycle; while the voltage of the signal transmitted in the VGL trace can be used to turn off the TFT gate on the display substrate. The signal transmitted in the STV trace can be used to control the vertical scanning start point of the pixel array in the display substrate, ensuring that the image can be displayed correctly and orderly. The signal transmitted in the CLK trace is an important signal for synchronization operation in the display substrate. This embodiment of the present disclosure can detect the signals transmitted by the signal traces electrically connected to each pixel unit in the pixel array through each detection trace, so as to identify defects or poor conditions in the display substrate in advance and perform repair or interception operations, thereby improving the yield of the display panel fabricated from the display substrate and ensuring the quality of the display panel.

[0087] It is understandable that both ends of the switch assembly can be connected to the aforementioned multiple detection lines; or, one end of the switch assembly can be connected to a signal line, and the other end of the switch assembly can be connected to multiple detection lines, etc., so that the electrical connection between multiple detection lines and signal lines can be simultaneously disconnected by controlling the switching state of the switch assembly.

[0088] It should be noted that the specific type and quantity of the switch components can be set according to the actual application scenario, and this disclosed embodiment does not impose any restrictions.

[0089] In some embodiments, such as Figure 4 As shown, the switch assembly 14 includes a plurality of controlled switches 141;

[0090] At least one controlled switch 141 is connected between each detection line 13 and the signal line 12.

[0091] In this way, by controlling the switching state of at least one controlled switch connecting each detection trace and signal trace, the electrical connection between each detection trace and signal trace can be disconnected, thereby preventing the detection traces remaining after cutting from being damaged by electrostatic discharge and improving the product yield of the display panel made from the display substrate.

[0092] In this embodiment of the disclosure, the aforementioned controlled switch can be a component that switches the on / off state of the connection line between the detection trace and the signal trace. Specifically, one, two, or three such controlled switches can be connected between each detection trace and signal trace on the display substrate.

[0093] It should be noted that the specific type of the controlled switch can be set according to the actual application scenario, and this disclosure embodiment does not impose any limitations. For example, the controlled switch may include a transistor; for example, a TFT transistor, or a metal-oxide-semiconductor field-effect transistor (MOSFET), abbreviated as MOS transistor, etc.

[0094] Here, when the controlled switch is a TFT transistor, a gate metal can be added to the material layer of the display substrate as the TFT gate to control the on / off state of the TFT transistor. When the gate voltage applied to the gate metal is greater than the TFT's threshold voltage, the TFT can be in the on state, i.e., the electrical connection between the detection trace and the signal trace is established. This allows for the detection of the signal transmitted through the signal trace, i.e., the display effect of the display substrate, thereby improving the yield of the display panel fabricated from the display substrate. When the gate voltage applied to the gate metal is less than the TFT's threshold voltage, or no voltage is applied, the TFT can be in the off state, i.e., the electrical connection between the detection trace and the signal trace is disconnected. This prevents electrostatic discharge damage to the metal traces remaining after cutting, further improving the yield of the display panel fabricated from the display substrate.

[0095] In this embodiment of the disclosure, the aforementioned field-effect transistor, i.e., a MOSFET, may include a gate, a source, and a drain. The gate of the MOSFET can serve as a signal input terminal; by inputting different signals to the gate, the MOSFET can be in different switching states. The source and drain of the MOSFET can be connected to the aforementioned detection trace; alternatively, the source of the MOSFET can be connected to a signal trace, and the drain of the MOSFET can be connected to a detection trace; or, the source of the MOSFET can be connected to a detection trace, and the drain of the MOSFET can be connected to a signal trace, etc.

[0096] Among them, the above-mentioned field-effect transistors can be various types of MOS transistors. For example, field-effect transistors can be divided into PMOS transistors (P-channel type) and NMOS transistors (N-channel type).

[0097] Understandably, when the field-effect transistor is a PMOS transistor, a low-level signal can be input to the gate of the PMOS transistor after the display substrate is fabricated but before it is cut. At this time, the PMOS transistor is in the on state, meaning it conducts the electrical connection between the detection and signal traces, allowing for the detection of the signal transmitted through the signal traces—that is, the display effect of the display substrate—thereby improving the yield of the display panel fabricated from the substrate. After the display substrate is cut, a high-level signal can be input to the gate of the PMOS transistor. At this time, the PMOS transistor is in the off state, meaning it disconnects the electrical connection between the detection and signal traces, preventing electrostatic discharge damage to the metal traces remaining after cutting, further improving the yield of the display panel fabricated from the substrate.

[0098] Similarly, when the field-effect transistor is an NMOS transistor, a high-level signal can be input to the gate of the PMOS transistor after the display substrate is fabricated but before it is cut. At this time, the PMOS transistor is in the on state, meaning it connects the detection and signal traces, allowing for the detection of the signal transmitted through the signal traces, i.e., the display effect of the display substrate, thus improving the yield of the display panel fabricated from the substrate. After the display substrate is cut, a low-level signal can be input to the gate of the PMOS transistor. At this time, the PMOS transistor is in the off state, meaning it disconnects the electrical connection between the detection and signal traces, preventing electrostatic discharge damage to the metal traces remaining after cutting, further improving the yield of the display panel fabricated from the substrate.

[0099] In some embodiments, the switching component includes a switching chip;

[0100] The first terminal of the switch chip is connected to the signal trace, and the second terminal of the switch chip is connected to multiple detection traces.

[0101] In this way, the electrical connection between multiple detection traces and signal traces can be disconnected by controlling the closing or opening of the switch chip. This can better reduce the risk of static electricity and short circuits introduced by the residual detection traces on the cutting end face of the display substrate, and effectively improve the product yield of the display panel made from the cut display substrate.

[0102] Here, the aforementioned switch chip may include a second terminal connecting multiple detection traces; alternatively, the aforementioned switch chip may also include multiple second terminals connected one-to-one with the multiple detection traces. This embodiment of the present disclosure can control the connection lines between the first terminal and one or more second terminals of the switch chip to be in an open state, thereby ensuring that the connection lines between the multiple detection traces and signal traces are also in an open state. This avoids the risk of static electricity and short circuits introduced by detection traces remaining on the diced end face of the display substrate, improving the display effect of the display panel fabricated from the display substrate.

[0103] It should be noted that, in one example, the switch chip may also include multiple sets of first terminals and second terminals as well as a signal input terminal, and a set of first terminals and second terminals are connected between a detection trace and a signal trace; the on / off state of the connection line between each set of first terminals and second terminals can be controlled by the signal input at the control signal input terminal, and this disclosure embodiment does not impose any limitations.

[0104] In some embodiments, such as Figure 5a and Figure 5b As shown, the above-mentioned display substrate 10 further includes a first dielectric layer 16 and a second dielectric layer 17 stacked on the substrate 11, with the second dielectric layer 17 located between the substrate 11 and the first dielectric layer 16.

[0105] The detection trace 13 is located on the side of the first dielectric layer 16 that is away from the second dielectric layer 17.

[0106] In this way, by placing the detection traces on the side of the first dielectric layer of the display substrate away from the second dielectric layer, the layout of the switching components on the display substrate can be better arranged, thereby reducing the manufacturing cost of the display panel through the reasonable layout of the switching components and detection traces on the display substrate.

[0107] In this embodiment of the disclosure, the first dielectric layer may be an electrical insulating layer between different metal layers in the display substrate, serving as an isolation film between two conductive metal layers or adjacent metal lines; for example, the first dielectric layer may be an inter-level dielectric (ILD) layer, which can provide electrical insulation between metal layers in the display substrate, prevent current from flowing directly between metal layers, thereby ensuring the normal operation of the display substrate.

[0108] The aforementioned second dielectric layer can be an insulating dielectric layer located between the gate and the semiconductor material in the transistor of the display substrate; for example, in a TFT transistor, the second dielectric layer can be an inter-gate TFT (GI) layer, which can be located between the gate and the active layer of the TFT channel to isolate the charge in the gate and the channel, while allowing the electric field to penetrate to control the current in the channel.

[0109] It is understood that the detection trace is disposed on the side of the first dielectric layer of the display substrate away from the second dielectric layer, and the switching component connecting the detection trace can be disposed between the first dielectric layer and the substrate of the display substrate. For example, when the switching component is a top-gate transistor, a gate metal can be disposed between the first and second dielectric layers of the display substrate as the gate of the top-gate transistor to control its on / off state; when the switching component is a bottom-gate transistor, a gate metal can be disposed on the side of the second dielectric layer of the display substrate facing the substrate as the gate of the bottom-gate transistor to control its on / off state, and so on.

[0110] In some embodiments, such as Figure 5a As shown, the switching assembly 14 includes a top-gate transistor;

[0111] The gate 142 of the top gate transistor is disposed between the first dielectric layer 16 and the second dielectric layer 17.

[0112] In this way, by placing the gate of the top gate transistor between the first dielectric layer and the second dielectric layer of the display substrate, since the display panel itself contains transistor components, the top gate transistor placed on the display substrate will not increase the number of photomasks, thereby not increasing the manufacturing cost of the display panel.

[0113] In this embodiment of the disclosure, the top-gate transistor can be a transistor whose gate is located on the upper layer of the display substrate. Specifically, the top-gate structure in the top-gate transistor refers to a gate deposited between the organic semiconductor layer and the gate insulating layer of the display substrate, such as between the ILD layer and the GI layer.

[0114] Here, the gate of the top-gate transistor is deposited between the first dielectric layer and the second dielectric layer, and the detection trace located on the side of the first dielectric layer away from the second dielectric layer can form the source and drain of the top-gate transistor, so as to form a switching component connecting the detection trace.

[0115] Understandably, in a top-gate structure, the organic semiconductor layer is first stacked on the gate insulating layer, and then the gate is deposited. This top-gate structure allows the organic semiconductor layer to separate the source / drain electrodes of the top-gate transistor from the conductive channel. Carriers injected from the electrodes into the conductive channel must pass through the organic semiconductor layer to reach the conductive channel. Because the gate of the top-gate transistor is closer to the organic semiconductor layer, it can provide better gate control.

[0116] In some embodiments, such as Figure 5b As shown, the switching assembly 14 includes a bottom-gate transistor;

[0117] The gate 143 of the bottom gate transistor is disposed on the side of the second dielectric layer 17 facing the substrate 11.

[0118] In this way, by setting the gate of the bottom gate transistor on the side of the second dielectric layer of the display substrate facing the substrate, since the display panel itself contains transistor components, setting the bottom gate transistor on the display substrate will not increase the number of photomasks, thereby not increasing the manufacturing cost of the display panel.

[0119] In this embodiment of the disclosure, the bottom-gate transistor can be a transistor whose gate is located on the lower layer of the display substrate. Specifically, the bottom-gate structure in a bottom-gate transistor refers to a gate deposited below the gate insulating layer of the display substrate, such as between the GI layer and the substrate.

[0120] Here, the gate of the bottom gate transistor is deposited on the side of the second dielectric layer of the display substrate facing the substrate, that is, between the second dielectric layer and the substrate; while the detection trace located on the side of the first dielectric layer away from the second dielectric layer can form the source and drain of the bottom gate transistor, so as to form a switching component connecting the detection trace.

[0121] Understandably, in a bottom-gate structure, the organic semiconductor layer is grown on top of the gate insulating layer, and then the source and drain electrodes are deposited. This bottom-gate structure allows charge carriers to be injected directly into the conductive channel from the electrode edges of the bottom-gate transistor. Because the gate of the bottom-gate transistor is located below the gate insulating layer, the electric field distribution between the gate and the organic semiconductor layer is uniform.

[0122] This disclosure provides a display panel that may include at least:

[0123] Circuit board;

[0124] The display substrate proposed in the above embodiments of this disclosure is located on a circuit board; the signal traces in the display substrate are electrically connected to the circuit board.

[0125] Here, the aforementioned circuit board can be a printed circuit board (PCB) made of double-sided fiberglass board. This circuit board can be used to support various components such as the display substrate, and can achieve electrical connections or electrical insulation between these components. The circuit board can also transmit display signals to the signal traces in the display substrate via flexible connectors.

[0126] It should be noted that the aforementioned display panel may include, but is not limited to, LCD panels or OLED panels, etc., and the embodiments disclosed herein are not limited thereto. For example, an LCD panel may include a display substrate, a color filter substrate, and a liquid crystal layer located between the display substrate and the color filter substrate. The display substrate is provided with a substrate, signal traces, detection traces, and switching components, as specifically described in the above embodiments of this disclosure, and will not be repeated here.

[0127] The display panel proposed in this embodiment can add a switching component connecting signal traces and detection traces in the display substrate of the display panel. By controlling the switching state of the switching component, the electrical connection between the detection traces and the signal traces can be disconnected, thereby reducing the risk of static electricity and short circuits introduced by the detection traces remaining on the cut end face of the display substrate, and effectively improving the product yield of the display panel.

[0128] This disclosure provides an electronic device that may include at least:

[0129] Mid-frame;

[0130] The display panel proposed in the above embodiments of this disclosure is mounted on the middle frame.

[0131] In this embodiment of the disclosure, the aforementioned electronic device can be any device with a display panel, such as a mobile phone, laptop computer, television, tablet personal computer, personal digital assistant (PDA), mobile internet device (MID), wearable device, etc.

[0132] Here, the mid-frame can be a frame in an electronic device used to support, fix and protect internal components; the display panel of the electronic device can be mounted on the mid-frame, which can be located between the display panel and the back cover of the electronic device.

[0133] The electronic device proposed in this disclosure can add a switching component connecting signal traces and detection traces to the display substrate of the display panel of the electronic device. By controlling the switching state of the switching component, the electrical connection between the detection traces and the signal traces can be disconnected, thereby reducing the risk of static electricity and short circuits introduced by the detection traces remaining on the cut end face of the display substrate, and effectively improving the product yield of the electronic device in which the display panel is located.

[0134] Figure 6 This is a structural block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 600 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0135] Reference Figure 6 The electronic device 600 may include one or more of the following components: processing component 602, memory 604, power supply component 606, multimedia component 608, audio component 610, input / output (I / O) interface 612, sensor component 614, and communication component 616.

[0136] Processing component 602 typically controls the overall operation of electronic device 600, such as operations associated with at least one of display, telephone call, data communication, camera operation, and recording operation. Processing component 602 may include one or more processors 620 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 602 may include one or more modules to facilitate interaction between processing component 602 and other components. For example, processing component 602 may include a multimedia module to facilitate interaction between multimedia component 608 and processing component 602.

[0137] Memory 604 is configured to store various types of data to support the operation of electronic device 600. Examples of such data include at least one of the following: instructions for any application or method operating on electronic device 600, contact data, phonebook data, messages, pictures, and videos. Memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0138] Power supply component 606 provides power to various components of electronic device 600. Power supply component 606 may include at least one of the following: a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 600.

[0139] Multimedia component 608 includes a screen that provides an output interface between electronic device 600 and user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a Touch Panel, the screen may be implemented as a touchscreen to receive input signals from the user. The Touch Panel includes one or more touch sensors to sense touches, swipes, and gestures on the Touch Panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 608 includes a front-facing camera and / or a rear-facing camera. When electronic device 600 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0140] Audio component 610 is configured to output and / or input audio signals. For example, audio component 610 includes a microphone (MIC) configured to receive external audio signals when electronic device 600 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 604 or transmitted via communication component 616. In some embodiments, audio component 610 also includes a speaker for outputting audio signals.

[0141] I / O interface 612 provides an interface between processing component 602 and peripheral interface modules, such as keyboards, click wheels, and buttons. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0142] Sensor assembly 614 includes one or more sensors for providing state assessments of various aspects of electronic device 600. For example, sensor assembly 614 may detect the on / off state of electronic device 600, the relative positioning of components such as the display and keypad of electronic device 600, changes in position of electronic device 600 or one of its components, the presence or absence of user contact with electronic device 600, orientation or acceleration / deceleration of electronic device 600, and temperature changes of electronic device 600. Sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 614 may also include an optical sensor, such as a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 614 may also include, but is not limited to, at least one of the following: an accelerometer, a gyroscope, a magnetometer, a pressure sensor, and a temperature sensor.

[0143] Communication component 616 is configured to facilitate wired or wireless communication between electronic device 600 and other devices. Electronic device 600 can access wireless networks based on communication standards, such as Wi-Fi, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 616 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 616 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wide Band (UWB), Bluetooth (BT), and other technologies.

[0144] In an exemplary embodiment, the electronic device 600 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0145] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0146] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0147] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A display substrate, characterized in that, include: Substrate; the substrate includes a first region and a second region disposed adjacent to each other; A pixel array is located on the substrate; Signal traces are located on the substrate and electrically connected to the pixel array for transmitting signals to the pixel array; A detection trace, located on the substrate and electrically connected to the signal trace, is used to detect the signal transmitted by the signal trace; A switching assembly, connected to the signal trace and the detection trace, is used to disconnect the electrical connection between the detection trace and the signal trace; The pixel array and the signal trace are both located in the first region, while the detection trace and the switching component are both located in the second region.

2. The display substrate according to claim 1, characterized in that, The detection traces are multiple, and there is a gap between two adjacent detection traces. The multiple detection traces are used to detect the signals transmitted by the signal traces connected to each pixel unit in the pixel array. The switching assembly is connected between the plurality of detection traces and the signal traces, and is used to disconnect the electrical connection between the plurality of detection traces and the signal traces.

3. The display substrate according to claim 2, characterized in that, The switching assembly includes multiple controlled switches; At least one controlled switch is connected between each of the detection traces and the signal traces.

4. The display substrate according to claim 2, characterized in that, The switching assembly includes a switching chip; The first end of the switch chip is connected to the signal trace, and the second end of the switch chip is connected to the multiple detection traces.

5. The display substrate according to any one of claims 1 to 4, characterized in that, The display substrate further includes a first dielectric layer and a second dielectric layer stacked on the substrate, wherein the second dielectric layer is located between the substrate and the first dielectric layer; The detection trace is located on the side of the first dielectric layer away from the second dielectric layer.

6. The display substrate according to claim 5, characterized in that, The switching assembly includes a top-gate transistor; The gate of the top-gate transistor is disposed between the first dielectric layer and the second dielectric layer.

7. The display substrate according to claim 5, characterized in that, The switching assembly includes a bottom-gate transistor; The gate of the bottom gate transistor is disposed on the side of the second dielectric layer facing the substrate.

8. The display substrate according to any one of claims 1 to 4, characterized in that, The display substrate further includes: The driving trace is located on the substrate; The detection trace is electrically connected to the drive trace and is used to detect the drive signal transmitted by the drive trace.

9. A display panel, characterized in that, The display panel includes: Circuit board; The display substrate as described in any one of claims 1 to 8 is located on the circuit board; the signal traces in the display substrate are electrically connected to the circuit board.

10. An electronic device, characterized in that, The electronic device includes: Mid-frame; The display panel as described in claim 9 is mounted on the middle frame.

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