Display panel and display device

Abstract

The invention relates to the field of display, and particularly discloses a display panel and a display device.The display panel comprises a substrate, an electric heating layer and a heating electrode are arranged on the side, away from the light emitting face of the display panel, of the substrate, the heating electrode is connected with an external power source, and the heating electrode supplies power to the electric heating layer; the electric heating layer is used for heating the substrate base plate; the resistance value of a resistor, corresponding to the edge position of the substrate, of the electric heating layer is larger than the resistance value of a resistor, corresponding to the middle of the substrate, of the electric heating layer. Through the mode, the display panel is uniformly heated, so that the display panel can achieve a good display effect in a low-temperature environment.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a display panel and a display device. Background Art

[0002] In the case where the display panel cannot work normally in a low temperature environment (≤-20℃), the most commonly used method is to use ITO (Indium Tin Oxides) film as a heating element to compensate for the low temperature heating of the display panel. However, by attaching an ITO film to the substrate of the display panel for electrical heating, the heat is mainly transferred to the substrate through thermal conductive adhesive, and the energy utilization rate is low. The heat dissipation at the edge of the display panel substrate is fast. When the electric heating is heated, the temperature of the center of the substrate will be higher than that near the edge, and uniform heating cannot be achieved, which affects the display effect of the display panel in a low temperature environment.

[0003] Therefore, how to uniformly heat the display panel so that the display panel can achieve a good display effect in a low temperature environment has become an urgent problem to be solved in the art. Summary of the invention

[0004] The present 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 effects in a low temperature environment.

[0005] An embodiment of the present application discloses a display panel, including a base substrate, wherein an electric heating layer and a heating electrode are provided on a side of the base substrate away from a light emitting surface of the display panel, the heating electrode is connected to an external power supply, and the heating electrode supplies power to the electric heating layer; the electric heating layer is used to heat the base substrate; the resistance value of the electric heating layer corresponding to the edge position of the base substrate is greater than the resistance value of the electric heating layer corresponding to the middle part of the base substrate.

[0006] Optionally, an active layer is provided on the side of the substrate away from the electric heating layer, and a shading module is provided on the side of the substrate away from the active layer, and the shading module corresponds to the position of the active layer, and the width of the shading module is greater than or equal to the width of the active layer.

[0007] Optionally, the shading module is arranged on the same layer as the electric heating layer and is disconnected from the electric heating layer.

[0008] Optionally, the shading module is arranged on a side of the electric heating layer away from the base substrate, and the electric heating layer includes a first heating layer and a second heating layer, the first heating layer corresponds to the position of the shading module, the second heating layer is arranged around the first heating layer, and the first heating layer and the second heating layer are disconnected.

[0009] Optionally, the heating electrode is disconnected from the shading module, the heating electrode is arranged on the same layer as the electric heating layer, or the heating electrode is arranged on a side of the electric heating layer away from the base substrate.

[0010] Optionally, the display panel includes a plurality of thin film transistors, and the plurality of thin film transistors are arranged on one side of the light emitting surface of the substrate, each of the thin film transistors includes the active layer, and a shading module is arranged on the side of the substrate away from the active layer and at a position corresponding to the active layer; the area of ​​the shading module located at the edge of the substrate is larger than the area of ​​the shading 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 the shading module is arranged at a corresponding position of each active layer; the area of ​​the plurality of shading modules gradually increases from the middle of the substrate to the edge of the substrate.

[0012] Optionally, a protective layer is entirely laid on a side of the shading module, the heating electrode and the electric heating layer away from the base substrate.

[0013] Optionally, a plurality of scanning lines are further arranged on a side of the substrate away from the heating electrode, each heating electrode corresponds to a position of each scanning line, and a width of the heating electrode is equal to or smaller than a width of the scanning line.

[0014] The embodiment of the present application further discloses a display device, including a housing. The display device also includes the display panel mentioned above, and the display panel is connected to the housing.

[0015] The present application sets an electric heating layer on the outer side of the base substrate to reduce the distance between the electric heating layer and the liquid crystal, improve the electrothermal conversion efficiency and reduce energy consumption; and connects the heating electrode to the electric heating layer. When the display panel operates in a low-temperature state, the heating electrode is powered by an external power supply, and the heating electrode transmits an electrical signal to the electric heating layer. After the electric heating layer is energized, the heat generated by its own resistance heats the base substrate. Since the edge position of the display panel dissipates heat faster than the middle position and the temperature drops more significantly, the resistance value of the electric heating layer at the edge position of the base substrate of the present application is greater than the resistance value of the electric heating layer corresponding to the middle part of the base substrate, so that the heating amount of the electric heating layer at the edge position of the base substrate is greater than the heating amount of the electric heating layer in the middle part of the base substrate, so that the overall heating effect tends to be consistent, which is conducive to achieving uniform heating of the display panel, and then improving the display effect of the display panel in a low-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 A schematic diagram of a first embodiment of a display panel of the present application;

[0018] Figure 2 A top view of the back side of the base substrate in the first embodiment of the display panel of the present application;

[0019] Figure 3 A schematic diagram of a second embodiment of a display panel of the present application;

[0020] Figure 4 A top view of the back side of the base substrate in the third embodiment of the display panel of the present application;

[0021] Figure 5 is a schematic diagram of a fourth embodiment of a display panel of the present application;

[0022] Figure 6 A top view of the back side of the base substrate in the fifth embodiment of the display panel of the present application;

[0023] Figure 7 It is a schematic diagram of an embodiment of a display device of the present application.

[0024] Among them, 10, display device; 100, display panel; 200, shell; 110, substrate; 120, active layer; 130, thin film transistor; 140, scanning line; 150, electric heating layer; 151, first heating layer; 152, second heating layer; 160, heating electrode; 170, shading module; 180, protective layer; 190, source and drain layer; 191, gate; 192, first insulating layer; 193, second insulating layer; 194, pixel electrode; 195, opening. DETAILED DESCRIPTION

[0025] The present application is described in detail below with reference to the accompanying drawings and optional embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Figure 1 is a schematic diagram of a first embodiment of a display panel of the present application, Figure 2 FIG. 1 is a top view of the back side of the base substrate in the first embodiment of the display panel of the present application. Figure 1 and Figure 2 As shown, an embodiment of the present application discloses a display panel 100, including a base substrate 110, wherein an electric heating layer 150 and a heating electrode 160 are provided on a side of the base substrate 110 away from a light emitting surface of the display panel 100, the heating electrode 160 is connected to an external power supply, and the heating electrode 160 supplies power to the electric heating layer 150; the electric heating layer 150 is used to heat the base substrate 110; the resistance value of the electric heating layer 150 corresponding to the edge position of the base substrate 110 is greater than the resistance value of the electric heating layer 150 corresponding to the middle part of the base substrate 110.

[0027] It should be noted that the display panel 100 in the present application may be a liquid crystal display panel 100, and the substrate 110 may be a substrate substrate 110 of an array substrate in the liquid crystal display panel 100. Since in the liquid crystal display panel 100, the viscosity coefficient of the liquid crystal molecules increases in a low temperature environment, resulting in a prolonged response time, severe image tailing, and inability to display normally, the array substrate may be heated to alleviate the above-mentioned problem; of course, the display panel 100 in the present application may also be other types of display panels 100 to solve the problem of uneven panel temperature of other types of display panels when operating in a low temperature state. The present application only takes the display panel 100 as a liquid crystal display panel 100 and the substrate substrate 110 as an array substrate as an example, and is not regarded as a limitation on the type of display panel 100.

[0028] The present application arranges an electric heating layer 150 on the outer side of the base substrate 110 to reduce the distance between the electric heating layer 150 and the liquid crystal, thereby improving the electrothermal conversion efficiency and reducing energy consumption; and connects the heating electrode 160 to the electric heating layer 150. When the display panel 100 operates at a low temperature, the heating electrode 160 is powered by an external power supply, and the heating electrode 160 transmits an electrical signal to the electric heating layer 150. After the electric heating layer 150 is powered on, the heat generated by its own resistance heats the base substrate 110. However, due to the edge position of the display panel 100, the heating electrode 160 is connected to the electric heating layer 150. Compared with the middle position, the heat dissipation is faster and the temperature reduction is more obvious. Therefore, the resistance value of the electric heating layer 150 at the edge position of the base substrate 110 of the present application is greater than the resistance value of the electric heating layer 150 corresponding to the middle part of the base substrate 110, so that the heating amount of the electric heating layer 150 at the edge position of the base substrate 110 is greater than the heating amount of the electric heating layer 150 in the middle part of the base substrate 110, so that the overall heating effect tends to be consistent, which is conducive to achieving uniform heating of the display panel 100, and then improving the display effect of the display panel 100 in a low temperature environment.

[0029] When the display panel 100 is a liquid crystal display panel 100, an active layer 120 is arranged on the side of the base substrate 110 away from the electric heating layer 150, and a shading module 170 is arranged on the side of the base substrate 110 away from the active layer 120, and the position of the shading module 170 corresponds to that of the active layer 120, and the width of the shading module 170 is greater than or equal to the width of the active layer 120.

[0030] In the present embodiment, the base substrate 110 is the base substrate 110 of the array substrate, wherein an active layer 120, a source-drain electrode layer 190, a first insulating layer 192, and a gate electrode 191 are sequentially arranged on the side of the base substrate 100 away from the electric heating layer 150, that is, the array substrate in the present embodiment adopts a top gate structure design; in the preparation process, the active layer 120 and the source-drain electrode layer 190 can be prepared first, and then the first insulating layer 192 is deposited on the entire surface, and the gate electrode 191 is formed on the first insulating layer 192, and then the second insulating layer 193 is deposited on the entire surface, and a hole 195 is opened in the second insulating layer 193, and a pixel electrode 194 is formed on the second insulating layer 193, and the pixel electrode 194 is bridged with the source-drain electrode layer 190 through the opening 195 on the second insulating layer 193 for conduction, so as to complete the preparation of the key components of the array substrate.

[0031] In the top gate 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 is likely to occur. Therefore, this embodiment sets a shading module 170 on the side of the substrate 110 away from the active layer 120, and uses the shading module 170 to shield the position of the active layer 120 to prevent the active layer 120 from being affected by light, resulting in light leakage current in the active layer 120, which affects the display effect of the display panel 100.

[0032] Of course, the array substrate of the present application may also adopt a bottom gate structure. When the bottom gate structure is designed, the shading 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 shading module 170 is arranged on the same layer as the electric heating layer 150, and is disconnected from the electric heating layer 150. When the shading module 170 is arranged on the same layer as the electric heating layer 150, the shading module 170 and the electric heating layer 150 can be manufactured simultaneously in one process, which is conducive to reducing the process and saving costs; in addition, the shading module 170 is disconnected from the electric heating layer 150, so that the shading module 170 and the electric heating layer 150 are not in contact, and the heat of the electric heating layer 150 will not be conducted to the shading module 170, and the shading module 170 is used to pattern the electric heating layer 150, and the electric heating layer 150 forms a heat loss at the position of the shading module 170, so that the area of ​​the electric heating layer 150 actually heated can be controlled by the area of ​​the shading module 170, and then the difference in the heating amount of the electric heating layer 150 at different shading module 170 area positions is achieved.

[0034] In addition, the heating electrode 160 in the present application is disconnected from the shading module 170 , the heating electrode 160 is arranged on the same layer as the electric heating layer 150 , or the heating electrode 160 is arranged on a side of the electric heating layer 150 away from the base substrate 110 .

[0035] The heating electrode 160 only heats the electric heating layer 150, and does not heat the shading module 170, so that the shading module 170 can isolate the electric heating layer 150 from heat, and the shading module 170 is used to pattern the electric heating layer 150, and the shading module 170 is used to change the actual heating area of ​​the electric heating layer 150 to adjust the heating amount of the electric heating layer 150 at different positions.

[0036] Since the heating electrode 160 itself is conductive and is made of metal material, the heating electrode 160 and the electric heating layer 150 can be arranged in the same layer or in staggered layers, as long as the contact between the heating electrode 160 and the electric heating layer 150 is ensured so that the electrical signal of the heating electrode 160 can be transmitted to the electric heating layer 150, and self-heating can be generated by utilizing the resistance of the electric heating layer 150.

[0037] When preparing the electric heating layer 150 and the heating electrode 160, the heating layer material and the heating electrode 160 material can be first deposited on the entire back surface of the base substrate 110 of the array substrate, wherein the heating layer material can be indium tin oxide material or zinc dioxide material, and the heating electrode 160 material can be any metal material such as gold, silver, copper, and aluminum; then, the heating electrode 160 and the shading module 170 are obtained by a semi-transparent mask process.

[0038] Specifically, the display panel 100 includes a plurality of thin film transistors 130, and the plurality of thin film transistors 130 are arranged on one side of the light emitting surface of the substrate 110, each thin film transistor 130 includes an active layer 120, and a shading module 170 is arranged on the side of the substrate 110 away from the active layer 120 and at the position corresponding to the active layer 120; the area of ​​the shading module 170 located at the edge of the substrate 110 is larger than the area of ​​the shading module 170 located in the middle of the substrate 110.

[0039] In this embodiment, a shading module 170 is provided at a position corresponding to the active layer 120 of each thin film transistor 130 of the display panel 100. The shading module 170 is used to shield the active layer 120 of each thin film transistor 130 to prevent the active layer 120 from being affected by light and generating leakage current.

[0040] In addition, among the multiple shading modules 170 of the present embodiment, the area of ​​the shading module 170 located at the edge of the base substrate 110 is larger than the area of ​​the shading module 170 located in the middle of the base substrate 110. Since the shading module 170 is disconnected from the electric heating layer 150, the shading module 170 occupies the space where the electric heating layer 150 is laid. Therefore, the larger the area of ​​the shading module 170, the smaller the area of ​​the electric heating layer 150 near it, and the smaller the area of ​​the electric heating layer 150, the greater the resistance value of its resistance, which will result in greater heat generation of the electric heating layer 150; when the area of ​​the shading module 170 located at the edge of the base substrate 110 is larger than the area of ​​the shading module 170 located in the middle of the base substrate 110, the area of ​​the electric heating layer 150 at the edge of the base substrate 110 is smaller than the area of ​​the electric heating layer 150 at the middle of the base substrate 110, and the area at the edge of the base substrate 110 is smaller than the area of ​​the electric heating layer 150 at the middle of the base substrate 110. The resistance value of the electric heating layer 150 at the edge is greater than the resistance value of the electric heating layer 150 in the middle of the base substrate 110, and the heat generated by the electric heating layer 150 at the edge of the base substrate 110 is greater than the heat generated by the electric heating layer 150 in the middle of the base substrate 110. Since the edge position of the display panel 100 dissipates heat faster and cools more significantly than the middle position, the heating amount of the electric heating layer 150 at the edge position of the base substrate 110 is greater than the heating amount of the electric heating layer 150 in the middle of the base substrate 110, so that the overall heating effect tends to be consistent, which is conducive to achieving uniform heating of the display panel 100, and then improving the display effect of the display panel 100 in a low temperature environment.

[0041] That is, the present application patterns the electric heating layer 150 through the shading module 170, and changes the area of ​​the electric heating layer 150 by the area of ​​the shading module 170, so that the resistance of the electric heating layer 150 at the edge of the display panel 100 is greater than the resistance of the electric heating layer 150 at the center of the display panel 100. When heated, the heating temperature at the edge of the display panel 100 is higher than the center temperature, which compensates for the shortcoming of fast heat dissipation at the edge of the display panel 100, thereby achieving uniform heating of the display panel 100 in a low temperature environment.

[0042] Figure 3 is a schematic diagram of a second embodiment of a display panel of the present application, such as Figure 3 As shown, the shading module 170 is arranged on the side of the electric heating layer 150 away from the base substrate 110, and 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 shading module 170, and the second heating layer 152 is arranged around the first heating layer 151, and the first heating layer 151 and the second heating layer 152 are disconnected.

[0043] This embodiment is different from the previous embodiment in that, in this embodiment, 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 a heating function.

[0044] The shading module 170 is arranged on the side of the electric heating layer 150 away from the base substrate 110, and the shading module 170 is raised by the first heating layer 151 arranged below the shading module 170, so that the shading module 170 and the electric heating layer 150 are staggered, and since the first heating layer 151 and the second heating layer 152 are disconnected, the shading module 170 and the second heating layer 152 are also disconnected.

[0045] The shading module 170 and the first heating layer 151 occupy the space where the second heating layer 152 for actual heating is laid. Therefore, the larger the area of ​​the shading module 170, the smaller the area of ​​the second heating layer 152 nearby. The smaller the area of ​​the second heating layer 152, the greater the resistance value of its resistor, which will result in greater heat generation of the second heating layer 152. When the area of ​​the shading module 170 and the first heating layer 151 located at the edge of the base substrate 110 is larger than the area of ​​the shading module 170 and the first heating layer 151 located in the middle of the base substrate 110, the area of ​​the second heating layer 152 at the edge of the base substrate 110 is smaller than the area of ​​the second heating layer 152 in the middle of the base substrate 110. The resistance value of the second heating layer 152 at the edge of the substrate 110 is greater than the resistance value of the second heating layer 152 in the middle of the base substrate 110, and the heat generated by the second heating layer 152 at the edge of the base substrate 110 is greater than the heat generated by the second heating layer 152 in the middle of the base substrate 110. Since the edge position of the display panel 100 dissipates heat faster and cools more significantly than the middle position, the heating amount of the second heating layer 152 at the edge position of the base substrate 110 is greater than the heating amount of the second heating layer 152 in the middle of the base substrate 110, so that the overall heating effect tends to be consistent, which is conducive to achieving uniform heating of the display panel 100, and then improving the display effect of the display panel 100 in a low temperature environment.

[0046] That is, in this embodiment, the second heating layer 152 is patterned by the shading module 170 and the first heating layer 151 at the same time, so that the resistance of the second heating layer 152 at the edge of the display panel 100 is greater than the resistance of the second heating layer 152 at the center of the display panel 100. When heated, the heating temperature at the edge of the display panel 100 is higher than the center temperature, which compensates for the shortcoming of fast heat dissipation at the edge of the display panel 100, thereby achieving uniform heating of the display panel 100 in a low temperature environment.

[0047] Figure 4 FIG. 1 is a top view of the back side of the base substrate in the third embodiment of the display panel of the present application. Figure 4 As shown, Figure 4 The illustrated embodiment is based on Figure 2 The display panel 100 includes a plurality of thin film transistors 130, each of the thin film transistors 130 includes an active layer 120, and a shading module 170 is arranged at a corresponding position of each active layer 120; the area of ​​the plurality of shading modules 170 gradually increases from the middle of the base substrate 110 to the edge of the base substrate 110.

[0048] This embodiment is different from the previous embodiment in that, in this embodiment, the structures of the multiple shading modules 170 are improved, and the areas of the multiple shading modules 170 gradually increase from the middle of the base substrate 110 to the edge of the base substrate 110; since the shading modules 170 are disconnected from the electric heating layer 150, the shading modules 170 occupy the space where the electric heating layer 150 is laid, and therefore the larger the area of ​​the shading modules 170 is, the larger the hollowing out of the electric heating layer 150 is, and the smaller the area of ​​the electric heating layer 150 is, and the smaller the area of ​​the electric heating layer 150 is, the greater the resistance value of the resistance is, which will result in greater heat generation of the electric heating layer 150.

[0049] When the area of ​​the plurality of shading modules 170 gradually increases from the middle of the substrate 110 to the edge of the substrate 110, the area of ​​the electric heating layer 150 gradually decreases from the middle of the substrate 110 to the edge of the substrate 110, and the resistance of the electric heating layer 150 gradually increases from the middle 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 middle of the substrate 110 to the edge of the substrate 110. Since the edge position of the display panel 100 dissipates heat faster and cools more significantly than the middle position, the heating amount of the electric heating layer 150 gradually increases from the middle of the substrate 110 to the edge of the substrate 110, so that the overall heating effect tends to be consistent, which is beneficial to achieve uniform heating of the display panel 100, and further improves the display effect of the display panel 100 in a low temperature environment.

[0050] Figure 5 is a schematic diagram of a fourth embodiment of a display panel of the present application, such as Figure 5 As shown, the protective layer 180 is entirely laid on one side of the shading module 170 , the heating electrode 160 , and the electric heating layer 150 away from the base substrate 110 .

[0051] In this embodiment, a protective layer 180 is also laid on the outer side of the shading module 170, the heating electrode 160 and the electric heating layer 150, wherein the protective layer 180 can be made of silicon nitride material; when manufacturing the protective layer 180, after the shading module 170, the heating electrode 160 and the electric heating layer 150 are manufactured, the silicon nitride material can be deposited on the entire surface of the outer side of the base substrate 110 to form the protective layer 180.

[0052] The protective layer 180 can prevent the electric heating layer 150, the shading module 170 and the heating electrode 160 from being damaged by collision with external structures. It can also prevent external water vapor from invading the electric heating layer 150, the heating electrode 160 and the shading module 170, affecting the normal use of the electric heating layer 150, the heating electrode 160 and the shading module 170, thereby helping to improve the service life of the display panel 100.

[0053] Since a mesh-shaped scanning line 140 is usually arranged in the array substrate of the liquid crystal display panel 100, in order to avoid the heating electrode 160 from further blocking the scanning line 140 and affecting the aperture ratio of the display panel 100, the present application further improves the structure of the heating electrode 160, and the specific improvements are as follows:

[0054] Figure 6 FIG. 1 is a top view of the back side of the base substrate in the fifth embodiment of the display panel of the present application. Figure 6 As shown, a plurality of scanning lines 140 are further arranged on a side of the base substrate 110 away from the heating electrode 160 , each heating electrode 160 corresponds to the position of each scanning line 140 , and the width of the heating electrode 160 is equal to or less than the width of the scanning line 140 .

[0055] In the present embodiment, by making the position of each heating electrode 160 correspond to the position of each scanning line 140, the heating electrode 160 is located directly below the scanning line 140. Since the scanning line 140 itself is not light-transmissive, it will block the light. When the heating electrode 160 is located directly below the scanning line 140, the original shading structure in the display panel 100 can be utilized to reduce the impact of further blocking the light caused by setting the heating electrode 160 to other positions, so that the heating electrode 160 will not affect the aperture ratio of the display panel 100, and the display effect of the display panel 100 is effectively guaranteed.

[0056] For example, in the liquid crystal display panel 100, when a backlight module is used to provide a light source for normal display of the display panel 100, light shines into the interior of 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 scanning line 140, the heating electrode 160 will further block the light emitted by the backlight module, and reduce the range of light shining into 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 scanning 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 scanning line 140. Therefore, the heating electrode 160 will not affect the aperture ratio of the display panel 100, and the display effect of the display panel 100 is effectively guaranteed.

[0057] Figure 7 is a schematic diagram of an embodiment of a display device of the present application, such as Figure 7As shown, the embodiment of the present application further discloses a display device 10, including a housing 200, and the display device 10 also includes the above-mentioned display panel 100, and the display panel 100 is connected to the housing 200. The housing 200 is used to protect the display panel 100 from being easily damaged by external forces during transportation or movement, and can prevent external water vapor from invading the display panel 100 to a certain extent, causing corrosion of electronic components in the display panel 100, which is conducive to extending the service life of the display panel 100.

[0058] In a low temperature environment, the display device 10 has an increased viscosity coefficient of liquid crystal molecules in the display panel 100 , which results in a prolonged response time, severe image tailing, and failure to display normally.

[0059] Based on the above problems, the present application improves the display panel 100 in the display device 10, by setting an electric heating layer 150 on the outside of the base 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 connecting the heating electrode 160 to the electric heating layer 150. When the display panel 100 is running in a low temperature state, the heating electrode 160 is powered by an external power supply, and the heating electrode 160 transmits an electrical signal to the electric heating layer 150. After the electric heating layer 150 is powered on, the heat generated by its own resistance heats the base substrate 110, and since the display panel The edge position of the plate 100 dissipates heat faster and cools more significantly than the middle position. Therefore, the resistance value of the electric heating layer 150 at the edge position of the base substrate 110 of the present application is greater than the resistance value of the electric heating layer 150 corresponding to the middle portion of the base substrate 110, so that the heating amount of the electric heating layer 150 at the edge position of the base substrate 110 is greater than the heating amount of the electric heating layer 150 in the middle portion of the base substrate 110, so that the overall heating effect tends to be consistent, which is conducive to achieving uniform heating of the display panel 100, improving the display effect of the display panel 100 in a low temperature environment, and further improving the quality of the display device 10.

[0060] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0061] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display panel, comprising a base substrate, characterized in that: An electric heating layer and a heating electrode are provided on a side of the base substrate away from the light emitting surface of the display panel, the heating electrode is connected to an external power source, and the heating electrode supplies power to the electric heating layer; the electric heating layer is used to heat the base substrate; The resistance value of the electric heating layer corresponding to the edge position of the substrate is greater than the resistance value of the electric heating layer corresponding to the middle position of the substrate.

2. The display panel according to claim 1, wherein: An active layer is arranged on the side of the substrate away from the electric heating layer, a shading module is arranged on the side of the substrate away from the active layer, and the position of the shading module corresponds to that of the active layer, and the width of the shading module is greater than or equal to the width of the active layer.

3. The display panel according to claim 2, wherein: The shading module is arranged on the same layer as the electric heating layer and is disconnected from the electric heating layer.

4. The display panel according to claim 2, wherein: The shading module is arranged on a side of the electric heating layer away from the base substrate, and the electric heating layer includes a first heating layer and a second heating layer. The first heating layer corresponds to the position of the shading module, and the second heating layer is arranged around the first heating layer, and the first heating layer and the second heating layer are disconnected.

5. The display panel according to any one of claims 3 or 4, characterized in that: The heating electrode is disconnected from the shading module, the heating electrode is arranged on the same layer as the electric heating layer, or the heating electrode is arranged on a side of the electric heating layer away from the base substrate.

6. The display panel according to claim 5, wherein: The display panel comprises a plurality of thin film transistors, which are arranged on one side of the light emitting surface of the substrate, each of which comprises the active layer, and a light shielding module is arranged on a side of the substrate away from the active layer and at a position corresponding to the active layer; The area of ​​the light shielding module located at the edge of the base substrate is larger than the area of ​​the light shielding module located in the middle of the base substrate.

7. The display panel according to claim 5, wherein: The display panel includes a plurality of thin film transistors, each of the thin film transistors includes the active layer, and the shading module is arranged at a corresponding position of each active layer; The areas of the plurality of light shielding modules gradually increase from the middle of the base substrate to the edge of the base substrate.

8. The display panel according to claim 5, wherein: A protective layer is entirely laid on one side of the shading module, the heating electrode and the electric heating layer away from the base substrate.

9. The display panel according to claim 5, wherein: A plurality of scanning lines are also arranged on a side of the base substrate away from the heating electrode, 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 smaller than the width of the scanning line.

10. A display device, comprising a housing, characterized in that: The display device further comprises a display panel as claimed in any one of claims 1 to 9, wherein the display panel is connected to the housing.

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