Display panel and display device
By setting an electric heating layer on the outside of the substrate of the display panel and adjusting the resistance value and the area of the light-shielding module, the problem of uneven heating of the display panel in low-temperature environment is solved, and uniform heating and good display effect are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2026-03-31
AI Technical Summary
The display panel cannot achieve uniform heating in low-temperature environments, resulting in poor display performance.
An electric heating layer is set on the outer side of the substrate and heated by a heating electrode. The resistance value at the edge is greater than that in the middle. The area of the heating layer is adjusted by a light-shielding module to achieve uniform heating.
It achieves uniform heating of the display panel in low-temperature environments, thus improving the display effect.
Smart Images
Figure CN119339676B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of displays, and more particularly to a display panel and a display device. Background Technology
[0002] To address the issue of display panels malfunctioning in low-temperature environments (≤-20℃), a common approach is to use ITO (Indium Tin Oxides) film as a heating element for low-temperature heating compensation. However, electrically heating by laminating the ITO film onto the substrate relies primarily on thermally conductive adhesive to transfer heat to the substrate, resulting in low energy efficiency. Furthermore, heat dissipation is rapid at the substrate edges, leading to a higher temperature at the substrate center compared to the edges during electric heating. This uneven heating ultimately affects the display performance in low-temperature environments.
[0003] Therefore, how to heat the display panel evenly so that it can achieve good display performance in low-temperature environments has become a problem that urgently needs to be solved in this field. Summary of the Invention
[0004] This application discloses a display panel and a display device, the purpose of which is to achieve uniform heating of the display panel so that the display panel can achieve good display effect in low temperature environment.
[0005] This application discloses a display panel, including a substrate. An electric heating layer and a heating electrode are disposed on the side of the substrate away from the light-emitting surface of the display panel. The heating electrode is connected to an external power source and supplies power to the electric heating layer. The electric heating layer is used to heat the substrate. The resistance value of the electric heating layer at the edge of the substrate is greater than the resistance value of the electric heating layer at the center of the substrate.
[0006] Optionally, an active layer is provided on the side of the substrate away from the electric heating layer, and a light-shielding module is provided on the side of the substrate away from the active layer. The light-shielding module is positioned corresponding to the active layer, and the width of the light-shielding module is greater than or equal to the width of the active layer.
[0007] Optionally, the light-shielding module is disposed on the same layer as the electric heating layer, but is disconnected from the electric heating layer.
[0008] Optionally, the light-shielding module is disposed on the side of the electric heating layer away from the substrate. The electric heating layer includes a first heating layer and a second heating layer. The first heating layer corresponds to the position of the light-shielding module, and the second heating layer is disposed around the first heating layer. The first heating layer and the second heating layer are disconnected.
[0009] Optionally, the heating electrode is disconnected from the light-shielding module, the heating electrode is disposed in the same layer as the electric heating layer, or the heating electrode is disposed on the side of the electric heating layer away from the substrate.
[0010] Optionally, the display panel includes a plurality of thin-film transistors, which are disposed on one side of the light-emitting surface of the substrate. Each thin-film transistor includes an active layer, and a light-shielding module is disposed on the side of the substrate away from the active layer, corresponding to the position of the active layer. The area of the light-shielding module located at the edge of the substrate is larger than the area of the light-shielding module located in the middle of the substrate.
[0011] Optionally, the display panel includes a plurality of thin-film transistors, each of the thin-film transistors includes the active layer, and a light-shielding module is disposed at a corresponding position of each active layer; the area of the plurality of light-shielding modules gradually increases from the middle of the substrate to the edge of the substrate.
[0012] Optionally, the light-shielding module, the heating electrode, and the side of the electric heating layer away from the substrate are covered with a protective layer.
[0013] Optionally, the substrate may have multiple scan lines on the side away from the heating electrode, with each heating electrode corresponding to the position of each scan line, and the width of the heating electrode being equal to or less than the width of the scan line.
[0014] This application also discloses a display device, including a housing, and the display device further includes the aforementioned display panel, which is connected to the housing.
[0015] This application improves electrothermal conversion efficiency and reduces energy consumption by setting an electric heating layer on the outer side of the substrate, thereby reducing the distance between the electric heating layer and the liquid crystal. The heating electrode is connected to the electric heating layer. When the display panel operates at low temperatures, an external power source supplies power to the heating electrode, which transmits an electrical signal to the electric heating layer. After being energized, the electric heating layer heats the substrate through the heat generated by its own resistance. Since the edges of the display panel dissipate heat faster and cool more significantly than the center, the resistance of the electric heating layer at the edge of the substrate is greater than that at the center. This results in a greater heating amount at the edge than at the center, leading to a more uniform overall heating effect and thus improving the display performance in low-temperature environments. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They serve to demonstrate implementation methods of this application and, together with the textual description, explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort. In the drawings:
[0017] Figure 1 This is a schematic diagram of the first embodiment of the display panel of this application;
[0018] Figure 2 This is a top view of the back side of the substrate in the first embodiment of the display panel of this application;
[0019] Figure 3 This is a schematic diagram of a second embodiment of the display panel of this application;
[0020] Figure 4 This is a top view of the back side of the substrate in the third embodiment of the display panel of this application;
[0021] Figure 5 This is a schematic diagram of the fourth embodiment of the display panel of this application;
[0022] Figure 6 This is a top view of the back side of the substrate in the fifth embodiment of the display panel of this application;
[0023] Figure 7 This is a schematic diagram of an embodiment of the display device of this application.
[0024] Among them, 10 is a display device; 100 is a display panel; 200 is a housing; 110 is a substrate; 120 is an active layer; 130 is a thin-film transistor; 140 is a scan line; 150 is an electric heating layer; 151 is a first heating layer; 152 is a second heating layer; 160 is a heating electrode; 170 is a light-shielding module; 180 is a protective layer; 190 is a source-drain layer; 191 is a gate; 192 is a first insulating layer; 193 is a second insulating layer; 194 is a pixel electrode; and 195 is an opening. Detailed Implementation
[0025] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0026] Figure 1 This is a schematic diagram of the first embodiment of the display panel of this application. Figure 2 This is a top view of the back side of the substrate in the first embodiment of the display panel of this application, as shown. Figure 1 and Figure 2 As shown in the figure, this application discloses a display panel 100, including a substrate 110. An electric heating layer 150 and a heating electrode 160 are disposed on the side of the substrate 110 away from the light-emitting surface of the display panel 100. The heating electrode 160 is connected to an external power source and supplies power to the electric heating layer 150. The electric heating layer 150 is used to heat the substrate 110. The resistance value of the electric heating layer 150 at the edge of the substrate 110 is greater than the resistance value of the electric heating layer 150 at the middle of the substrate 110.
[0027] It should be noted that the display panel 100 in this application can be a liquid crystal display panel 100, and the substrate 110 can be the substrate 110 of the array substrate in the liquid crystal display panel 100. Since the viscosity coefficient of liquid crystal molecules increases in the liquid crystal display panel 100 at low temperatures, the response time is prolonged, the image trailing is severe, and the display cannot be displayed normally. Therefore, the array substrate can be heated to alleviate the above problems. Of course, the display panel 100 in this application can also be other types of display panels 100 to solve the problem of uneven panel temperature when other types of display panels are operating at low temperatures. This application only uses the display panel 100 as a liquid crystal display panel 100 and the substrate 110 as the substrate 110 of the array substrate as an example for illustration, and it is not considered as a limitation on the type of display panel 100.
[0028] This application improves electrothermal conversion efficiency and reduces energy consumption by providing an electric heating layer 150 on the outer side of the substrate 110, thereby reducing the distance between the electric heating layer 150 and the liquid crystal. A heating electrode 160 is connected to the electric heating layer 150. When the display panel 100 operates at low temperatures, an external power source supplies power to the heating electrode 160, which transmits an electrical signal to the electric heating layer 150. After being energized, the electric heating layer 150 heats the substrate 110 through the heat generated by its own resistance. Furthermore, due to the edge position of the display panel 100… Compared to the middle position, the heat dissipation is faster and the temperature drop is more obvious. Therefore, the resistance value of the electric heating layer 150 at the edge of the substrate 110 is greater than the resistance value of the electric heating layer 150 at the middle of the substrate 110. This makes the heating amount of the electric heating layer 150 at the edge of the substrate 110 greater than the heating amount of the electric heating layer 150 at the middle of the substrate 110. This makes the overall heating effect more consistent, which is conducive to achieving uniform heating of the display panel 100 and thus improving the display effect of the display panel 100 in low temperature environments.
[0029] When the display panel 100 is a liquid crystal display panel 100, an active layer 120 is provided on the side of the substrate 110 away from the electric heating layer 150, and a light-shielding module 170 is provided on the side of the substrate 110 away from the active layer 120. The light-shielding module 170 is positioned corresponding to the active layer 120, and the width of the light-shielding module 170 is greater than or equal to the width of the active layer 120.
[0030] In this embodiment, the substrate 110 is the substrate of the array substrate. On the side of the substrate 100 away from the electric heating layer 150, an active layer 120, a source-drain layer 190, a first insulating layer 192, and a gate 191 are sequentially disposed. That is, the array substrate in this embodiment adopts a top-gate structure design. In the fabrication process, the active layer 120 and the source-drain layer 190 can be fabricated first, and then the first insulating layer 192 can be deposited to form the entire surface. The gate 191 is formed on the first insulating layer 192, and then the second insulating layer 193 is deposited to form the entire surface. A hole 195 is opened in the second insulating layer 193, and a pixel electrode 194 is formed on the second insulating layer 193. The pixel electrode 194 is connected to the source-drain layer 190 through the opening 195 in the second insulating layer 193 to conduct electricity, so as to complete the fabrication of the key devices of the array substrate.
[0031] In the top grid structure, since the active layer 120 is closer to the light source, if the active layer 120 is not shielded from light, light leakage current will easily occur. Therefore, in this embodiment, a light shielding module 170 is provided on the side of the substrate 110 away from the active layer 120. The light shielding module 170 is used to shield the position of the active layer 120 from light to prevent the active layer 120 from being affected by light, which would cause the active layer 120 to generate light leakage current and affect the display effect of the display panel 100.
[0032] Of course, the array substrate of this application can also adopt a bottom gate structure. When the bottom gate structure design is adopted, the light-shielding module 170 does not need to shield the active layer 120, but only serves to form a patterned design for the electric heating layer 150, thereby adjusting the heating area of the electric heating layer 150.
[0033] Furthermore, in this embodiment, the light-shielding module 170 is disposed on the same layer as the electric heating layer 150, but is disconnected from the electric heating layer 150. When the light-shielding module 170 and the electric heating layer 150 are disposed on the same layer, the light-shielding module 170 and the electric heating layer 150 can be manufactured in one process, which helps to reduce the number of processes and save costs. In addition, the disconnection between the light-shielding module 170 and the electric heating layer 150 prevents them from contacting each other, and the heat from the electric heating layer 150 will not be conducted to the light-shielding module 170. The light-shielding module 170 is used to pattern the electric heating layer 150, and heat loss is created at the location of the light-shielding module 170. Thus, the actual heated area of the electric heating layer 150 can be controlled by the area of the light-shielding module 170, thereby achieving the difference in heating amount of the electric heating layer 150 at different locations of the light-shielding module 170.
[0034] In addition, the heating electrode 160 in this application is disconnected from the light-shielding module 170, the heating electrode 160 is disposed in the same layer as the electric heating layer 150, or the heating electrode 160 is disposed on the side of the electric heating layer 150 away from the substrate 110.
[0035] The heating electrode 160 heats only the electric heating layer 150 and does not heat the light-shielding module 170, so as to isolate the heat of the electric heating layer 150 by the light-shielding module 170. The light-shielding module 170 is used to form a pattern on the electric heating layer 150, and the actual heating area of the electric heating layer 150 is changed by the light-shielding module 170 to adjust the heating amount of the electric heating layer 150 at different positions.
[0036] Since the heating electrode 160 itself is conductive and made of metal, the heating electrode 160 and the electric heating layer 150 can be arranged in the same layer or staggered, as long as the heating electrode 160 and the electric heating layer 150 are in contact, so that the electrical signal of the heating electrode 160 can be transmitted to the electric heating layer 150, and the resistance of the electric heating layer 150 is used to generate self-heating.
[0037] When fabricating the electric heating layer 150 and the heating electrode 160, the heating layer material and the heating electrode 160 material can be deposited on the entire back side of the substrate 110 of the array substrate. The heating layer material can be indium tin oxide or zinc dioxide, and the heating electrode 160 material can be any metal material such as gold, silver, copper, or aluminum. Then, the heating electrode 160 and the light-shielding module 170 are obtained by a semi-transparent mask process.
[0038] Specifically, the display panel 100 includes a plurality of thin-film transistors 130, which are disposed on one side of the light-emitting surface of the substrate 110. Each thin-film transistor 130 includes an active layer 120. On the side of the substrate 110 away from the active layer 120, a light-shielding module 170 is disposed at the position corresponding to the active layer 120. The area of the light-shielding module 170 located at the edge of the substrate 110 is larger than the area of the light-shielding module 170 located in the middle of the substrate 110.
[0039] In this embodiment, a light-shielding module 170 is provided at the corresponding position of the active layer 120 of each thin film transistor 130 in the display panel 100. The light-shielding module 170 is used to shield the active layer 120 of each thin film transistor 130 from light to prevent the active layer 120 from being affected by light and generating leakage current.
[0040] Furthermore, in this embodiment, among the multiple light-shielding modules 170, the area of the light-shielding module 170 located at the edge of the substrate 110 is larger than the area of the light-shielding module 170 located in the middle of the substrate 110. Since the light-shielding module 170 is disconnected from the electric heating layer 150, and the light-shielding module 170 occupies the space where the electric heating layer 150 is laid, the larger the area of the light-shielding module 170, the smaller the area of the nearby electric heating layer 150. A smaller area of the electric heating layer 150 results in a higher resistance value, leading to a greater heat generation from the electric heating layer 150. When the area of the light-shielding module 170 located at the edge of the substrate 110 is larger than the area of the light-shielding module 170 located in the middle of the substrate 110, the area of the electric heating layer 150 at the edge of the substrate 110 is smaller than the area of the electric heating layer 150 in the middle of the substrate 110. The resistance of the electric heating layer 150 at the edge of the substrate 110 is greater than that of the electric heating layer 150 in the middle of the substrate 110. The heat generated by the electric heating layer 150 at the edge of the substrate 110 is greater than that of the electric heating layer 150 in the middle of the substrate 110. Since the heat dissipation is faster and the cooling is more obvious at the edge of the display panel 100 than at the middle, the heating amount of the electric heating layer 150 at the edge of the substrate 110 is greater than that at the middle of the substrate 110. This makes the overall heating effect more uniform, which is conducive to achieving uniform heating of the display panel 100 and thus improving the display effect of the display panel 100 in low-temperature environments.
[0041] In this application, the electric heating layer 150 is patterned by the light-shielding module 170. By changing the area of the electric heating layer 150 by the area of the light-shielding module 170, the resistance of the electric heating layer 150 at the edge of the display panel 100 is greater than that at the center of the display panel 100. When heating, the heating temperature at the edge of the display panel 100 is higher than that at the center, which makes up for the disadvantage that the edge of the display panel 100 dissipates heat quickly, thereby achieving uniform heating of the display panel 100 in a low-temperature environment.
[0042] Figure 3 This is a schematic diagram of a second embodiment of the display panel of this application, as shown below. Figure 3 As shown, the light-shielding module 170 is disposed on the side of the electric heating layer 150 away from the substrate 110. The electric heating layer 150 includes a first heating layer 151 and a second heating layer 152. The first heating layer 151 corresponds to the position of the light-shielding module 170. The second heating layer 152 is disposed around the first heating layer 151, and the first heating layer 151 and the second heating layer 152 are disconnected.
[0043] The difference between this embodiment and the previous embodiment is that, although the electric heating layer 150 includes two parts, a first heating layer 151 and a second heating layer 152, only the second heating layer 152 is actually connected to the heating electrode 160, that is, only the second heating layer 152 has the heating function.
[0044] The light-shielding module 170 is disposed on the side of the electric heating layer 150 away from the substrate 110, and the light-shielding module 170 is raised by the first heating layer 151 disposed below the light-shielding module 170, so that the light-shielding module 170 and the electric heating layer 150 are staggered. Since the first heating layer 151 and the second heating layer 152 are disconnected, the light-shielding module 170 and the second heating layer 152 are also disconnected.
[0045] The light-shielding module 170 and the first heating layer 151 occupy the space where the second heating layer 152, which is actually heated, is laid. Therefore, the larger the area of the light-shielding module 170, the smaller the area of the second heating layer 152 near it. The smaller the area of the second heating layer 152, the higher its resistance, which leads to a greater heat generation from the second heating layer 152. When the area of the light-shielding module 170 and the first heating layer 151 located at the edge of the substrate 110 is larger than the area of the light-shielding module 170 and the first heating layer 151 located in the middle of the substrate 110, the area of the second heating layer 152 at the edge of the substrate 110 is smaller than the area of the second heating layer 152 in the middle of the substrate 110. The resistance of the second heating layer 152 at the edge of the substrate 110 is greater than that of the second heating layer 152 in the middle of the substrate 110. The heat generated by the second heating layer 152 at the edge of the substrate 110 is greater than that in the middle of the substrate 110. Since the heat dissipation is faster and the cooling is more obvious at the edge of the display panel 100 than at the middle, the heating amount of the second heating layer 152 at the edge of the substrate 110 is greater than that in the middle of the substrate 110. This makes the overall heating effect more consistent, which is conducive to achieving uniform heating of the display panel 100 and thus improving the display effect of the display panel 100 in low-temperature environments.
[0046] In this embodiment, the light-shielding module 170 and the first heating layer 151 simultaneously pattern the second heating layer 152, so that the resistance of the second heating layer 152 at the edge of the display panel 100 is greater than that at the center of the display panel 100. When heating, the heating temperature at the edge of the display panel 100 is higher than that at the center, which makes up for the disadvantage that the edge of the display panel 100 dissipates heat quickly, thereby achieving uniform heating of the display panel 100 in a low-temperature environment.
[0047] Figure 4 This is a top view of the back side of the substrate in the third embodiment of the display panel of this application, as shown. Figure 4 As shown, Figure 4 The illustrated embodiment is based on Figure 2 As an improvement, the display panel 100 includes a plurality of thin film transistors 130, each thin film transistor 130 includes an active layer 120, and a light-shielding module 170 is provided at a corresponding position of each active layer 120; the area of the plurality of light-shielding modules 170 gradually increases from the middle of the substrate 110 to the edge of the substrate 110.
[0048] The difference between this embodiment and the previous embodiment is that the structure of the multiple light-shielding modules 170 has been improved in this embodiment. The area of the multiple light-shielding modules 170 gradually increases from the middle of the substrate 110 to the edge of the substrate 110. Since the light-shielding modules 170 and the electric heating layer 150 are disconnected, the light-shielding modules 170 occupy the space where the electric heating layer 150 is laid. Therefore, the larger the area of the light-shielding modules 170, the larger the cutout of the electric heating layer 150, and the smaller the area of the electric heating layer 150 nearby. The smaller the area of the electric heating layer 150, the greater its resistance value, which will lead to a greater heat generation of the electric heating layer 150.
[0049] As the area of the multiple light-shielding modules 170 gradually increases from the center of the substrate 110 to the edge of the substrate 110, the area of the electric heating layer 150 gradually decreases from the center of the substrate 110 to the edge of the substrate 110, and the resistance of the electric heating layer 150 gradually increases from the center of the substrate 110 to the edge of the substrate 110. Therefore, the heat generated by the electric heating layer 150 gradually increases from the center of the substrate 110 to the edge of the substrate 110. Since the edge of the display panel 100 dissipates heat faster and cools down more significantly than the center, the heating amount of the electric heating layer 150 gradually increases from the center of the substrate 110 to the edge of the substrate 110, making the overall heating effect more uniform. This is beneficial for achieving uniform heating of the display panel 100, thereby improving the display effect of the display panel 100 in low-temperature environments.
[0050] Figure 5 This is a schematic diagram of the fourth embodiment of the display panel of this application, as shown. Figure 5 As shown, the light-shielding module 170, the heating electrode 160, and the electric heating layer 150 are all covered with a protective layer 180 on the side away from the substrate 110.
[0051] In this embodiment, a protective layer 180 is also deposited on the outer side of the light-shielding module 170, the heating electrode 160 and the electric heating layer 150. The protective layer 180 can be made of silicon nitride. When fabricating the protective layer 180, after the light-shielding module 170, the heating electrode 160 and the electric heating layer 150 are fabricated, silicon nitride is deposited on the outer side of the substrate 110 to form the protective layer 180.
[0052] The protective layer 180 can prevent the electric heating layer 150, the light shielding module 170 and the heating electrode 160 from being damaged by external structural impacts. At the same time, it can also prevent external moisture from entering the electric heating layer 150, the heating electrode 160 and the light shielding module 170, affecting their normal use, thereby helping to extend the service life of the display panel 100.
[0053] Since a mesh of scan lines 140 is typically arranged in the array substrate of the liquid crystal display panel 100, in order to avoid the heating electrode 160 from further obstructing the scan lines 140 and affecting the aperture ratio of the display panel 100, this application also improves the structure of the heating electrode 160, as follows:
[0054] Figure 6 This is a top view of the back side of the substrate in the fifth embodiment of the display panel of this application, as shown. Figure 6 As shown, a plurality of scan lines 140 are also provided on the side of the substrate 110 away from the heating electrode 160. Each heating electrode 160 corresponds to the position of each scan line 140, and the width of the heating electrode 160 is equal to or less than the width of the scan line 140.
[0055] In this embodiment, by aligning the position of each heating electrode 160 with the position of each scan line 140, the heating electrode 160 is positioned directly below the scan line 140. Since the scan line 140 itself is opaque, it would block light. However, when the heating electrode 160 is positioned directly below the scan line 140, the existing light-blocking structure in the display panel 100 can be utilized to reduce the further light blocking caused by placing the heating electrode 160 in other positions. This ensures that the heating electrode 160 does not affect the aperture ratio of the display panel 100, effectively guaranteeing the display effect of the display panel 100.
[0056] For example, in the liquid crystal display panel 100, when the backlight module provides a light source for normal display, light enters the display panel 100 from one side of the heating electrode 160. If the width of the heating electrode 160 is greater than the width of the scan line 140, the heating electrode 160 will further block the light emitted by the backlight module, and reduce the range of light entering the opening area of the display panel 100, which will directly affect the display effect of the display panel 100. Therefore, in this embodiment, the width of the heating electrode 160 is set to be equal to or less than the width of the scan line 140, so that the range of light blocked by the heating electrode 160 is the same as the range of light blocked by the scan line 140. Therefore, the heating electrode 160 will not affect the aperture ratio of the display panel 100, effectively ensuring the display effect of the display panel 100.
[0057] Figure 7 This is a schematic diagram of an embodiment of the display device of this application, as shown below. Figure 7As shown in the illustration, this application also discloses a display device 10, including a housing 200. The display device 10 further includes the aforementioned display panel 100, which is connected to the housing 200. The housing 200 is used to protect the display panel 100 from damage by external forces during handling or movement, and can also prevent external moisture from entering the display panel 100 to a certain extent, thus preventing corrosion of the electronic components inside the display panel 100 and extending the service life of the display panel 100.
[0058] In low-temperature environments, the display device 10 experiences a prolonged response time and severe image trailing due to the increased viscosity coefficient of the liquid crystal molecules in its internal display panel 100, resulting in an inability to display normally.
[0059] Based on the above problems, this application improves the display panel 100 in the display device 10 by providing an electric heating layer 150 on the outer side of the substrate 110, reducing the distance between the electric heating layer 150 and the liquid crystal, improving the electrothermal conversion efficiency, and reducing energy consumption; and by connecting the heating electrode 160 to the electric heating layer 150. When the display panel 100 operates at low temperatures, an external power supply powers the heating electrode 160, which transmits an electrical signal to the electric heating layer 150. After being energized, the electric heating layer 150 heats the substrate 110 through the heat generated by its own resistance, while the display panel... The edge of the panel 100 dissipates heat faster and cools more significantly than the center. Therefore, the resistance of the electric heating layer 150 at the edge of the substrate 110 is greater than the resistance at the center of the substrate 110. This results in the heating amount of the electric heating layer 150 at the edge of the substrate 110 being greater than that at the center of the substrate 110, making the overall heating effect more uniform. This is beneficial for achieving uniform heating of the display panel 100, improving the display effect of the display panel 100 in low-temperature environments, and thus improving the quality of the display device 10.
[0060] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.
[0061] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.
Claims
1. A display panel comprising a substrate base board, characterized by, The substrate substrate is provided with an electric heating layer and a heating electrode on the side away from the light-emitting surface of the display panel, the heating electrode is connected with an external power supply, and the heating electrode supplies power to the electric heating layer; the electric heating layer is used for heating the substrate substrate; The resistance value of the electric heating layer corresponding to the edge position of the substrate substrate is greater than the resistance value of the electric heating layer corresponding to the middle part of the substrate substrate; The substrate substrate is provided with an active layer on the side away from the electric heating layer, and the substrate substrate is provided with a light shielding module on the side away from the active layer, and the position of the light shielding module corresponds to the position of the active layer, and the width of the light shielding module is greater than or equal to the width of the active layer; The light shielding module is provided in the same layer as the electric heating layer and is disconnected with the electric heating layer; The light shielding module forms a pattern on the electric heating layer, and the area of the electric heating layer actually heated is changed by using the light shielding module, so as to adjust the heating amount of the electric heating layer at different positions.
2. The display panel of claim 1, wherein, The light shielding module is provided on the side away from the substrate substrate of the electric heating layer, the electric heating layer includes a first heating layer and a second heating layer, the first heating layer corresponds to the position of the light shielding module, the second heating layer is provided around the first heating layer, and the first heating layer is disconnected with the second heating layer.
3. The display panel of claim 2, wherein, The heating electrode is disconnected with the light shielding module, the heating electrode is provided in the same layer as the electric heating layer, or the heating electrode is provided on the side away from the substrate substrate of the electric heating layer.
4. The display panel of claim 3, wherein, The display panel includes a plurality of thin film transistors, a plurality of the thin film transistors are provided on the side of the light-emitting surface of the substrate substrate, each of the thin film transistors includes the active layer, and the side away from the active layer of the substrate substrate is provided with a light shielding module corresponding to the position of the active layer; The area of the light shielding module located at the edge of the substrate substrate is greater than the area of the light shielding module located at the middle part of the substrate substrate.
5. The display panel of claim 4, wherein, The display panel includes a plurality of thin film transistors, each of the thin film transistors includes the active layer, and each active layer is provided with the light shielding module at the corresponding position; The areas of the plurality of light shielding modules gradually increase from the middle part of the substrate substrate to the edge of the substrate substrate.
6. The display panel of claim 3, wherein, The light shielding module, the heating electrode and the electric heating layer are integrally laid with a protective layer on the side away from the substrate substrate.
7. The display panel of claim 3, wherein, The side away from the heating electrode of the substrate substrate is also provided with a plurality of scanning lines, each of the heating electrodes corresponds to the position of each of the scanning lines, and the width of the heating electrode is equal to or less than the width of the scanning line.
8. A display device comprising a housing, characterized in that The display device also includes the display panel of any one of claims 1 to 7, and the display panel is connected with the shell.
Citation Information
Patent Citations
Liquid crystal panel provided with heater
JP1982192927A