Liquid crystal display panel and liquid crystal display device

Abstract

A liquid crystal display panel and a liquid crystal display device are provided. The liquid crystal display panel comprises: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and a heating electrode layer disposed on a side of the first substrate remote from the second substrate, wherein the heating electrode layer comprises a plurality of heating electrodes, each for heating the liquid crystal in the liquid crystal layer; and wherein the first substrate comprises a first region and a second region, the first region being closer to a side edge of the first substrate relative to the second region.The plurality of heating electrodes comprises a first heating electrode located in the first region and at least one second heating electrode located in the second region, wherein the heating power of the first heating electrode is greater than the heating power of each of the at least one second heating electrode.

Description

Technical field

[0001] The present disclosure relates to the field of display technology, and more particularly to a liquid crystal display panel and a liquid crystal display device. State of the art

[0002] In recent years, liquid crystal display panels have been widely used. Liquid crystal display panels used in electronic vehicle rearview mirrors generally operate in low-temperature environments. In order to ensure the imaging time and image display quality of electronic vehicle rearview mirrors, it is generally necessary to heat the liquid crystal in the liquid crystal display panel. The current heating solution causes the peripheral heat dissipation of the liquid crystal display panel to occur more quickly due to the low ambient temperature, which in turn causes the peripheral temperature of the liquid crystal display panel to be lower than the center temperature, and at the same time, the display area also has the problem of uneven temperature.

[0003] Therefore, how to design the structure of the liquid crystal display panel to balance the heating efficiency and temperature uniformity of the liquid crystal display panel is gradually becoming one of the important issues that the person skilled in the art needs to deal with.

[0004] The information disclosed above in this part is only for understanding the background of the technical concept of the present disclosure, and therefore, the above information may contain the information that is not prior art. Disclosure of the invention

[0005] To solve at least one aspect of the above-mentioned problems, the embodiments of the present disclosure provide a liquid crystal display panel and a liquid crystal display device including the liquid crystal display panel.

[0006] According to one aspect, a liquid crystal display panel is provided. The liquid crystal display panel comprises: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and a heating electrode layer disposed on a side of the first substrate remote from the second substrate, wherein the heating electrode layer comprises a plurality of heating electrodes, each for heating the liquid crystals in the liquid crystal layer; and wherein the first substrate comprises a first region and a second region, the first region being closer to a side edge of the first substrate relative to the second region.The plurality of heating electrodes comprises a first heating electrode located in the first region and at least one second heating electrode located in the second region, wherein a heating power of the first heating electrode is greater than a heating power of each of the at least one second heating electrode.

[0007] According to some exemplary embodiments, the first substrate comprises a first surface remote from the second substrate, wherein the heating electrode layer is in direct contact with the first surface.

[0008] According to some exemplary embodiments, the liquid crystal display panel further comprises: a backlight module located on a side of the first substrate remote from the second substrate, and a first polarizer located between the backlight module and the first substrate, wherein the heating electrode layer is located between the first polarizer and the first substrate.

[0009] According to some exemplary embodiments, an area of an orthographic projection of the first heating electrode on the first surface is larger than an area of an orthographic projection of each of the at least one second heating electrode on the first surface.

[0010] According to some exemplary embodiments, the first heating electrode comprises a ring electrode located in the first region; the second heating electrode comprises a strip electrode located in the second region.

[0011] According to some exemplary embodiments, the heating electrode layer comprises a plurality of heating electrode groups, wherein at least one of the heating electrode groups comprises a plurality of the second heating electrodes and a plurality of interconnections. In at least one of the heating electrode groups, a plurality of the second heating electrodes and the plurality of interconnections are arranged alternately along a first direction, and two adjacent ones of the second heating electrodes are electrically connected by the interconnection. The plurality of heating electrode groups are arranged spaced apart from one another along a second direction, wherein the second direction is different from the first direction.

[0012] According to some exemplary embodiments, the areas of orthographic projections of the plurality of second heating electrodes on the first surface in at least one of the heating electrode groups decrease in a direction from a side edge of the first substrate to a center position of the first substrate.

[0013] According to some exemplary embodiments, each of the second heating electrodes has a first dimension along the first direction. In at least one of the heating electrode groups, the first dimensions of the plurality of second heating electrodes decrease in a direction from a side edge of the first substrate to a central position of the first substrate.

[0014] According to some exemplary embodiments, each of the second heating electrodes has a second dimension along the second direction. In at least one of the heating electrode groups, the second dimensions of the plurality of second heating electrodes are substantially the same.

[0015] According to some exemplary embodiments, the first substrate comprises a first side edge and a second side edge, wherein the first side edge and the second side edge are arranged opposite one another in the first direction. The first heating electrode comprises a first electrode portion located near the first side edge and a second electrode portion located near the second side edge. The first electrode portion is connected to a first voltage, and the second electrode portion is connected to a second voltage, wherein the first voltage is higher than the second voltage.

[0016] According to some exemplary embodiments, one end of each of the heating electrode groups in the first direction is connected to the first electrode part, and the other end of each of the heating electrode groups in the first direction is connected to the second electrode part.

[0017] According to some exemplary embodiments, in at least one of the heating electrode groups, the difference between the first dimensions of two adjacent ones of the second heating electrodes is 20 to 30 µm; and / or the first dimension of each of the second heating electrodes is 300 to 500 µm; and / or the second dimension of each of the second heating electrodes is 60 to 100 µm; and / or the distance between two adjacent ones of the heating electrode groups in the second direction is 10 to 20 µm; and / or the dimension of the connection in the first direction is 10 to 15 µm; and / or the dimension of the connection in the second direction is 6 to 8 µm.

[0018] According to some exemplary embodiments, the heating electrode layer comprises a plurality of heating electrode groups, wherein at least one of the heating electrode groups comprises a plurality of the second heating electrodes and a plurality of connections. In at least one of the heating electrode groups, a plurality of the second heating electrodes and the plurality of connections are arranged alternately along a second direction, and two adjacent ones of the second heating electrodes are electrically connected by the connection. The plurality of heating electrode groups are arranged spaced apart from one another along a first direction, wherein the second direction is different from the first direction.

[0019] According to some exemplary embodiments, the areas of orthographic projections of the plurality of second heating electrodes on the first surface in at least one of the heating electrode groups decrease in a direction from a side edge of the first substrate to a center position of the first substrate.

[0020] According to some exemplary embodiments, each of the second heating electrodes has a second dimension along the second direction. In at least one of the heating electrode groups, the second dimensions of the plurality of second heating electrodes decrease in a direction from a side edge of the first substrate to a central position of the first substrate.

[0021] According to some exemplary embodiments, each of the second heating electrodes has a first dimension along the first direction. In at least one of the heating electrode groups, the first dimensions of the plurality of second heating electrodes are substantially the same.

[0022] According to some exemplary embodiments, the first substrate comprises a third side edge and a fourth side edge, wherein the third side edge and the fourth side edge are arranged opposite one another in the second direction. The first heating electrode comprises a third electrode portion located near the third side edge and a fourth electrode portion located near the fourth side edge. The third electrode portion is connected to a first voltage, and the fourth electrode portion is connected to a second voltage, wherein the first voltage is higher than the second voltage.

[0023] According to some exemplary embodiments, one end of each of the heating electrode groups in the second direction is connected to the third electrode part, and the other end of each of the heating electrode groups in the second direction is connected to the fourth electrode part.

[0024] According to some exemplary embodiments, in at least one of the heating electrode groups, the difference between the second dimensions of two adjacent ones of the second heating electrodes is 20 to 30 µm; and / or the second dimension of each of the second heating electrodes is 300 to 500 µm; and / or the first dimension of each of the second heating electrodes is 60 to 100 µm; and / or the distance between two adjacent ones of the heating electrode groups in the first direction is 10 to 20 µm; and / or the dimension of the connection in the second direction is 10 to 15 µm; and / or the dimension of the connection in the first direction is 6 to 8 µm.

[0025] According to some exemplary embodiments, the first heating electrode comprises a U-shaped electrode located in the first region; the second heating electrode comprises a U-shaped electrode located in the second region.

[0026] According to some exemplary embodiments, a plurality of the second heating electrodes form at least one heating electrode group; the first heating electrode is connected to a first voltage source, and the at least one heating electrode group is connected to a second voltage source. The voltage provided by the first voltage source differs from the voltage provided by the second voltage source.

[0027] According to some exemplary embodiments, the first heating electrode comprises a first dimension along the first direction and a second dimension along the second direction. At least one of the second heating electrodes comprises a first dimension along the first direction and a second dimension along the second direction. The first dimension of the first heating electrode is greater than the first dimension of the second heating electrode, and / or the second dimension of the first heating electrode is greater than the second dimension of the second heating electrode.

[0028] According to some exemplary embodiments, the liquid crystal display panel further comprises a first pin and a second pin, wherein the first pin wraps around the first side edge of the first substrate and the second pin wraps around the second side edge of the first substrate.

[0029] According to some example embodiments, each of the first pin and the second pin comprises a first sub-pin, a second sub-pin, and a third sub-pin, wherein the second sub-pin connects the first sub-pin and the third sub-pin. The first sub-pin is located on a surface of the heating electrode layer remote from the first substrate. The third sub-pin is located on a surface of the first substrate close to the second substrate. The second sub-pin is arranged opposite the first side edge or the second side edge of the first substrate.

[0030] According to some example embodiments, a plurality of the first sub-pins are arranged spaced apart from each other in the second direction; a plurality of the second sub-pins are arranged spaced apart from each other in the second direction; a plurality of the third sub-pins are arranged continuously in the second direction.

[0031] According to some exemplary embodiments, the liquid crystal display panel further comprises a first pin and a second pin, wherein the first pin wraps around the third side edge of the first substrate and the second pin wraps around the fourth side edge of the first substrate.

[0032] According to some example embodiments, each of the first pin and the second pin comprises a first sub-pin, a second sub-pin, and a third sub-pin, wherein the second sub-pin connects the first sub-pin and the third sub-pin. The first sub-pin is located on a surface of the heating electrode layer remote from the first substrate. The third sub-pin is located on a surface of the first substrate close to the second substrate. The second sub-pin is arranged opposite the third side edge or the fourth side edge of the first substrate.

[0033] According to some exemplary embodiments, a plurality of the first sub-pins are arranged spaced apart from one another in the first direction; a plurality of the second sub-pins are arranged spaced apart from one another in the first direction; a plurality of the third sub-pins are arranged continuously in the first direction.

[0034] According to some example embodiments, the liquid crystal display panel further comprises a first pin, a second pin, a third pin, and a fourth pin. The first pin, the second pin, the third pin, and the fourth pin wrap around the same side edge of the first substrate. The first pin and the second pin are each connected to two ends of the first heating electrode. The third pin and the fourth pin are each connected to two ends of the at least one heating electrode group. Each of the first pin, the second pin, the third pin, and the fourth pin comprises a first sub-pin, a second sub-pin, and a third sub-pin, wherein the second sub-pin connects the first sub-pin and the third sub-pin.

[0035] According to some exemplary embodiments, the liquid crystal display panel further comprises a first lead and a second lead, the first lead being connected to a first voltage and the second lead being connected to a second voltage. The second sub-pin of the first pin is connected to the first lead, and the second sub-pin of the second pin is connected to the second lead.

[0036] According to some example embodiments, the liquid crystal display panel further comprises a first lead, a second lead, a third lead, and a fourth lead, wherein the first lead and the second lead are connected to a first voltage source; the third lead and the fourth lead are connected to a second voltage source. The second sub-pin of the first pin is connected to the first lead, the second sub-pin of the second pin is connected to the second lead, the second sub-pin of the third pin is connected to the third lead, and the second sub-pin of the fourth pin is connected to the fourth lead.

[0037] According to some exemplary embodiments, an edge of the heating electrode layer is closer to the side edge of the first substrate in the first direction than an edge of the first polarizer; and / or an edge of the heating electrode layer is closer to the side edge of the first substrate in the second direction than an edge of the first polarizer.

[0038] According to some exemplary embodiments, the material of the heating electrode comprises ITO or IZO.

[0039] According to another aspect, there is provided a liquid crystal display device comprising the liquid crystal display panel described above. Short description of the drawings

[0040] From the following description of the present disclosure with reference to the accompanying drawings, further objects and advantages of the present disclosure will become apparent, which may contribute to a thorough understanding of the present disclosure. Fig. 1A is a schematic structural diagram of a liquid crystal display panel according to embodiments of the present disclosure; Fig. 1B is a plan view of a first substrate according to embodiments of the present disclosure; Fig. 1C an enlarged view of Part I in Fig. 1B; Fig. 2 is a plan view of a first substrate according to other embodiments of the present disclosure; Fig. 3 is a plan view of a first substrate according to other embodiments of the present disclosure; Fig. 4A is a partially enlarged view of a pin according to embodiments of the present disclosure, schematically illustrating a portion of the pin in contact with the heating electrode; Fig. 4B is a partially enlarged view of a pin according to embodiments of the present disclosure, schematically illustrating a portion of the pin in contact with the first substrate; Fig. 4C is a cross-sectional view of a pin according to embodiments of the present disclosure; Fig. 5A is a schematic diagram of a first lead and a second lead according to embodiments of the present disclosure; Fig. 5B a bottom view of Fig. 5A; Fig. 6 is a structural diagram of a liquid crystal display panel according to other embodiments of the present disclosure; Fig. 7 is a flowchart of a method of manufacturing a liquid crystal display panel according to embodiments of the present disclosure.

[0041] It should be noted that in the drawings used to describe embodiments of the present disclosure, the dimensions of layers, structures, or regions may be exaggerated or reduced for clarity, ie, the drawings are not drawn to actual scale. Examples of implementation

[0042] The technical solution of the present disclosure is described in more detail below using exemplary embodiments and in conjunction with the accompanying drawings. Throughout the specification, identical or similar reference numerals designate identical or similar components. The following description of the embodiments of the present disclosure with reference to the accompanying drawings serves to explain the general inventive concept of the present disclosure and is not to be understood as limiting the present disclosure.

[0043] Furthermore, in the following detailed description, for ease of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, it will be apparent that one or more embodiments may be practiced without these specific details.

[0044] It should be understood that while the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element could be referred to as a second element, and similarly, a second element could be referred to as a first element, without departing from the scope of exemplary embodiments. For example, the term "and / or" as used herein includes any or all combinations of one or a plurality of related listed factors.

[0045] It should be understood that when an element or layer is described as being "formed on" another element or layer, it may be formed directly or indirectly on the other element or layer. That is, there may be, for example, intermediate elements or layers present. Conversely, when an element or layer is described as being "formed directly on" another element or layer, no intervening elements or layers are present. Other words used to describe the relationship between elements or layers should be interpreted in a similar way (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.).

[0046] Throughout this text, the directional terms "first direction" and "second direction" are used to describe different directions, such as the horizontal direction and the vertical direction. It is understood that such language is merely exemplary description and does not limit the disclosure.

[0047] Throughout this text, the phrase "on the same layer" generally means that a first component and a second component may be formed from the same material and by the same patterning process, unless otherwise specified. The phrase "A and B are joined in one piece" means that component A and component B are integrally formed, meaning they generally comprise the same material and are formed as a structurally coherent unitary component.

[0048] Unless otherwise indicated, directional terms such as "top," "bottom," "left," "right," "inside," "outside," etc., are used in this text to refer to the orientation or positional relationship based on the drawings. They are used solely to facilitate the description of the present disclosure and are not intended to indicate or imply that the stated device, element, or component must have a particular orientation and be constructed and operated in a particular orientation. It is understood that as the absolute position of the objects described changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms should not be construed as limitations of the present disclosure.

[0049] In this text, the terms "vertical", "vertically connected" or similar expressions include not only the case of 90 degrees, ie perfectly vertical, but also the case where the deviation from 90 degrees is within a certain error range, e.g. the deviation from 90 degrees is within the process error range.

[0050] As market demand for electronic vehicle rearview mirrors increases and their applications become more widespread, users have stricter requirements for the response time of electronic rearview mirrors. To ensure the imaging speed and image display quality of electronic rearview mirrors, the grayscale response time of liquid crystal display devices must be less than 60 ms in low-temperature environments. Since the flow viscosity of the liquid crystal decreases sharply with the decrease in ambient temperature, the response time becomes significantly longer, and the specification of a response time of less than 60 ms cannot be met. Therefore, in a low-temperature environment, the temperature of the liquid crystal display device must rise rapidly within 30 seconds to 1 minute to accelerate the response speed of the liquid crystal and meet user requirements.At the same time, users also have requirements for heating power and heating efficiency and expect to achieve faster response times in a shorter time (e.g. 20 seconds) with lower power consumption.

[0051] The current heating solution causes peripheral heat dissipation to occur more rapidly due to the low ambient temperature, which in turn causes the peripheral temperature to be lower than the center temperature. At the same time, the display area also has the problem of uneven temperature. Furthermore, the current heating solution consists in applying a layer of heating electrodes to a glass plate and laminating the substrate with heating electrodes to the panel using OCR (Optical Clear Resin), resulting in a thicker overall module structure. In view of this, the embodiments of the present disclosure optimize the division of the first substrate and fabricate the heating electrodes on the back of the array substrate to reduce the lamination process, make the module structure thinner, and thus improve the heating efficiency and heating uniformity of the liquid crystal display device.

[0052] Fig. 1A is a schematic structural diagram of a liquid crystal display panel according to the embodiments of the present disclosure. Referring to Fig. 1A, a liquid crystal display panel may comprise a first substrate 1, a second substrate 2, a liquid crystal layer 3, and a heating electrode layer 4.

[0053] Specifically, the first substrate 1 and the second substrate 2 may be an array substrate and a color filter substrate, respectively. For example, the array substrate and the color filter substrate are disposed opposite each other, and a liquid crystal layer 3 may be disposed between the array substrate and the color filter substrate. It should be understood that the substrate of the color filter substrate and the array substrate may be a glass substrate. Furthermore, it should be noted that the color filter substrate and the array substrate may adopt the usual structures of color filter substrates and array substrates in the field, which will not be described again here.

[0054] Referring to Fig. 1A, the heating electrode layer 4 may be disposed on a side of the first substrate 1 remote from the second substrate 2. Alternatively, the first substrate 1 may, for example, include a first surface 101 remote from the second substrate 2, and the heating electrode layer may directly contact the first surface 101, so that the heating electrode can be in direct contact with the first surface 101 of the first substrate 1, thereby reducing the lamination process and improving alignment accuracy. At the same time, the heating electrode is closer to the liquid crystal, which can improve heating efficiency. Since the OCR lamination process is not required, one layer of glass substrate and OCR is omitted, thereby thinning the overall thickness of the module.

[0055] Fig. 1B is a plan view of a first substrate according to embodiments of the present disclosure.

[0056] With reference to Fig. 1B, the first substrate 1 may include a first region 102 and a second region 103. The first region 102 is closer to a side edge of the first substrate 1 than the second region 103. In particular, the first region 102 may be the peripheral edges of the first substrate 1, and the second region 103 may be a region surrounded by the peripheral edges of the first substrate 1 and whose entire interior is mesh-like.

[0057] In the embodiments of the present disclosure, the heating electrode layer 4 may include a plurality of heating electrodes. For example, the heating electrode layer 4 may include a first heating electrode 41 arranged in the first region 102 and at least one second heating electrode 42 arranged in the second region 103. The first heating electrode 41 may be an annular whole surrounding the first substrate 1, and the second heating electrode 42 may be strip-shaped. The area of the orthographic projection of the first heating electrode 41 on the first surface 101 of the first substrate 1 may be larger than the area of the orthographic projection of each of the at least one second heating electrode on the first surface 101.

[0058] In the embodiments of the present disclosure, a plurality of heating electrodes may each heat the liquid crystal in the liquid crystal layer 3. Alternatively, when heating the liquid crystal, the heating power of the heating electrode may be adjusted according to the position of the liquid crystal. For example, the heating power of the first heating electrode 41 may be set larger than the heating power of each of the second heating electrodes. In this way, when heating the liquid crystal display panel, not only the temperature of the peripheral side edges of the liquid crystal display panel can be increased, but also the speed of the temperature rise can be increased. This solves the problem of rapid heat dissipation around the liquid crystal display panel in the prior art, and thus achieves the effect of improving the thermal uniformity of the liquid crystal display panel.

[0059] Referring to Fig. 1B, the heating electrode layer 4 may further comprise a plurality of heating electrode groups 40, wherein at least one heating electrode group 40 comprises a plurality of second heating electrodes 42 and a plurality of connections 43. In at least one heating electrode group 40, a plurality of second heating electrodes 42 and the plurality of connections 43 are arranged alternately along a first direction, and two adjacent second heating electrodes 42 are electrically connected by the connection 43; the plurality of heating electrode groups 40 are arranged spaced apart from each other along a second direction, wherein the second direction is different from the first direction. For example, the first direction may be a horizontal direction, for example, the X-direction in Fig. 1B, and the second direction may be a vertical direction, for example the Y direction in Fig. 1B.

[0060] In the embodiments of the present disclosure, in at least one heating electrode group 40, the areas of orthographic projections of the plurality of second heating electrodes 42 on the first surface 101 may decrease in a direction from a side edge of the first substrate 1 to a center position of the first substrate 1.

[0061] Alternatively, each second heating electrode 42 may have a first dimension A along the X-direction, for example, a length of the heating electrode along the X-direction. In at least one heating electrode group 40, the lengths of the heating electrodes of the plurality of second heating electrodes 42 may decrease in a direction from a side edge of the first substrate 1 to a central position of the first substrate 1.

[0062] Alternatively, each second heating electrode 42 may have a second dimension B along the Y direction, for example, the linewidth of the heating electrode. In at least one heating electrode group 40, the linewidths of the heating electrodes of the plurality of second heating electrodes 42 may be substantially equal.

[0063] Fig. Figure 1C is an enlarged view of Part I in Fig. 1B.

[0064] With reference to Fig. 1C, in particular, in at least one heating electrode group 40, the difference between the first dimensions A of two adjacent second heating electrodes 42 is 20 to 30 µm; and / or the first dimension A of each second heating electrode is 300 to 500 µm; and / or the second dimension B of each second heating electrode is 60 to 100 µm; and / or the distance between two adjacent heating electrode groups in the second direction is 10 to 20 µm; and / or the dimension D of the connection 43 in the first direction is 10 to 15 µm; and / or the dimension E of the connection 43 in the second direction is 6 to 8 µm.

[0065] In the embodiments of the present disclosure, the first heating electrode 41 may include a first dimension F along a first direction (X-direction) and a second dimension G along a second direction (Y-direction). At least one second heating electrode 42 includes a first dimension A along a first direction (X-direction) and a second dimension B along a second direction (Y-direction). The first dimension F of the first heating electrode 41 is greater than the first dimension A of the second heating electrode 42, and / or the second dimension G of the first heating electrode 41 is greater than the second dimension B of the second heating electrode 42.

[0066] In the embodiments of the present disclosure, the first substrate 1 may include a first side edge 104 and a second side edge 105, wherein the first side edge 104 and the second side edge 105 may be arranged opposite each other in the first direction (X direction). The first heating electrode 41 may include a first electrode portion located near the first side edge 104 and a second electrode portion located near the second side edge 105. The first electrode portion is connectable to a first voltage, and the second electrode portion is connectable to a second voltage, wherein the first voltage is higher than the second voltage. Alternatively, the first voltage may be lower than the second voltage.When the circuit is turned on, one end of each heating electrode group 40 in the first direction (X direction) is connected to the first electrode part, and the other end of each heating electrode group in the first direction (X direction) is connected to the second electrode part.

[0067] In the embodiment of the present disclosure, by dividing the first substrate into regions, the heating electrodes in the first region are arranged as a whole, and the resistance is thus relatively large. When the same current is supplied, the temperature rises rapidly; therefore, the ambient heat loss can be compensated for in low-temperature environments. The heating electrodes in the second region are striped, and the areas of the orthographic projections on the first surface decrease in the direction from the side edge of the first substrate to the center position of the first substrate. This means that, along the direction of the positive and negative electric fields, the areas of the orthographic projections of the heating electrodes gradually decrease from the periphery to the center.This allows the heating efficiency of each position in the display area of the liquid crystal display panel to be equalized during heating and the temperature consistency of the liquid crystal display panel to be maintained, thus solving the problem that the peripheral temperature is lower than the center temperature due to rapid peripheral heat dissipation and the temperature is uneven in the display area in low-temperature environments. According to the heating efficiency, heating power, and temperature uniformity requirements of the liquid crystal display device, the first dimension A, the second dimension B, the second-direction distance C, the first-direction dimension D, and the second-direction dimension E can be adjusted, etc., to optimize the image display effect of the liquid crystal display device.

[0068] Fig. 2 is a plan view of a first substrate according to other embodiments of the present disclosure.

[0069] With reference to Fig. 2, the heating electrode layer 4 may further comprise a plurality of heating electrode groups 40, wherein at least one heating electrode group 40 comprises a plurality of second heating electrodes 42 and a plurality of interconnections 43. In at least one heating electrode group 40, a plurality of second heating electrodes 42 and the plurality of interconnections 43 are alternately arranged along a second direction (Y direction), and two adjacent second heating electrodes 42 are electrically connected by the interconnection 43; the plurality of heating electrode groups 40 are spaced apart from each other along a first direction (X direction), wherein the second direction is different from the first direction.

[0070] In the embodiments of the present disclosure, in at least one heating electrode group 40, the areas of orthographic projections of the plurality of second heating electrodes 42 on the first surface 101 may decrease in a direction from a side edge of the first substrate 1 to a center position of the first substrate 1.

[0071] Alternatively, each second heating electrode 42 may have a second dimension B along the second direction (Y direction). In at least one heating electrode group 40, the second dimensions B of the plurality of second heating electrodes 42 may decrease in a direction from a side edge of the first substrate 1 toward a center position of the first substrate 1.

[0072] Alternatively, each second heating electrode 42 may have a first dimension A along the first direction (X-direction). In at least one heating electrode group 40, the first dimensions A of the plurality of second heating electrodes 42 may be substantially the same.

[0073] In particular, in at least one heating electrode group 40, the difference between the second dimensions B of two adjacent second heating electrodes 42 is 20 to 30 µm; and / or the second dimension B of each second heating electrode is 300 to 500 µm; and / or the first dimension A of each second heating electrode is 60 to 100 µm; and / or the distance C between two adjacent heating electrode groups 40 in the first direction is 10 to 20 µm; and / or the dimension D of the connection 43 in the second direction is 10 to 15 µm; and / or the dimension E of the connection 43 in the first direction is 6 to 8 µm.

[0074] In the embodiments of the present disclosure, the first substrate 1 may include a third side edge 106 and a fourth side edge 107, wherein the third side edge 106 and the fourth side edge 107 may be arranged opposite each other in the second direction (Y direction). The first heating electrode 41 may include a third electrode portion located near the third side edge 106 and a fourth electrode portion located near the fourth side edge 107. The third electrode portion is connectable to a first voltage, and the fourth electrode portion is connectable to a second voltage, wherein the first voltage is higher than the second voltage. Alternatively, the first voltage may be lower than the second voltage.When the circuit is turned on, one end of each heating electrode group 40 in the second direction (Y direction) is connected to the third electrode part, and the other end of each heating electrode group in the second direction (Y direction) is connected to the fourth electrode part.

[0075] In the embodiment of the present disclosure, by dividing the first substrate into regions, the heating electrodes in the first region are arranged as a whole, the heating electrodes in the second region are formed in a stripe shape, and the areas of the orthographic projections on the first surface decrease in the direction from the side edge of the first substrate to the center position of the first substrate, during heating, the heating efficiency of each position in the display region of the liquid crystal display panel can be equalized and the temperature consistency of the liquid crystal display panel can be maintained, so that the problem that the peripheral temperature is lower than the center temperature due to rapid peripheral heat dissipation and the temperature is uneven in the display region in a low-temperature environment is solved.

[0076] Fig. 3 is a plan view of a first substrate according to other embodiments of the present disclosure.

[0077] Referring to Fig. 3, the first heating electrode 41 may also be a U-shaped electrode located in the first region 1; the second heating electrode 42 may be a U-shaped electrode located in the second region.

[0078] In the embodiments of the present disclosure, the first dimension of the second heating electrode along the first direction may be 500 to 800 µm, and the distance between two adjacent second heating electrodes in the first direction may be 20 to 50 µm. The areas of the orthographic projections of the second heating electrodes 42 on the first surface 101 may be equal, and each second heating electrode 42 may correspond to a group of positive / negative electrodes. In this embodiment, a plurality of groups of leads, e.g., a first lead 61, a second lead 62, a third lead 63, a fourth lead 64, as well as a first connector 9 and a second connector 10, may be provided.During the working process, different currents can be supplied to heat the liquid crystal, thereby solving the problem of uneven temperature in the display area of the liquid crystal display panel in the prior art and achieving temperature consistency of the liquid crystal display panel.

[0079] In the embodiments of the present disclosure, a plurality of second heating electrodes 42 form at least one heating electrode group 40; the first heating electrode 41 is connectable to a first voltage source, and the at least one heating electrode group 40 is connectable to a second voltage source. The voltage provided by the first voltage source is different from the voltage provided by the second voltage source. Alternatively, the first voltage source may be higher than the second voltage source. This can achieve a high heating rate and temperature of the first region to solve the problems of rapid heat dissipation around the liquid crystal display panel and the uneven temperature of the liquid crystal display panel in the prior art, thereby improving the heating efficiency and temperature uniformity of the liquid crystal display panel.

[0080] Fig. 4A is a partially enlarged view of a pin according to embodiments of the present disclosure, schematically illustrating a portion of the pin in contact with the heating electrode. Fig. 4B is a partially enlarged view of a pin according to embodiments of the present disclosure, schematically illustrating a portion of the pin in contact with the first substrate. Fig. 4C is a cross-sectional view of a pin according to embodiments of the present disclosure.

[0081] In the embodiments of the present disclosure, the liquid crystal display panel may further include a first pin 51 and a second pin 52. The first pin 51 may wrap around the first side edge 104 of the first substrate 1, and the second pin 52 may wrap around the second side edge 105 of the first substrate 1.

[0082] Alternatively, each of the first pin 51 and the second pin 52 may comprise a first sub-pin 501, a second sub-pin 502, and a third sub-pin 503, wherein the second sub-pin 502 connects the first sub-pin 501 and the third sub-pin 503. The first sub-pin 501 is located on a surface of the heating electrode layer 4 remote from the first substrate 1. The third sub-pin 503 is located on a surface of the first substrate 1 close to the second substrate 2. The second sub-pin 502 is arranged opposite the first side edge 104 or the second side edge 105 of the first substrate 1.

[0083] With reference to Fig. 1B, alternatively, a plurality of first sub-pins 501 may be arranged spaced apart from each other in the second direction (Y-direction), and a plurality of second sub-pins 502 may be arranged spaced apart from each other in the second direction (Y-direction), and a plurality of third sub-pins 503 may be arranged continuously in the second direction (Y-direction), which is to be understood that the third sub-pins 503 may be arranged continuously on a surface without a heating electrode layer, as in Fig. 4B shown. Fig. 4B is a partially enlarged view of a portion of the pin in contact with the first substrate 1, which is also provided to be a partially enlarged view of the pin not in contact with the heating electrode 41. The fifth pin 55 can be formed by continuously arranging the third sub-pins 503.

[0084] With reference to Fig. 2, the liquid crystal display panel in the embodiments of the present disclosure may further include a first pin 51 and a second pin 52. The first pin 51 may wrap around the third side edge 106 of the first substrate 1, and the second pin 52 may wrap around the fourth side edge 107 of the first substrate 1.

[0085] Alternatively, each of the first pin 51 and the second pin 52 may comprise a first sub-pin 501, a second sub-pin 502, and a third sub-pin 503, wherein the second sub-pin 502 connects the first sub-pin 501 and the third sub-pin 503. The first sub-pin 501 may be located on a surface of the heating electrode layer 4 remote from the first substrate 1. The third sub-pin 503 may be located on a surface of the first substrate 1 close to the second substrate 2. The second sub-pin 502 is arranged opposite the third side edge 106 or the fourth side edge 107 of the first substrate 1.

[0086] With reference to Fig. 2, alternatively, a plurality of first sub-pins 501 may be arranged spaced apart from each other in the first direction (X direction), and a plurality of second sub-pins 502 may be arranged spaced apart from each other in the first direction (X direction), and a plurality of third sub-pins 503 may be arranged continuously in the first direction (X direction), which is to be understood that the third sub-pins 503 may be arranged continuously on a surface without a heating electrode layer, as in Fig. 4B shown.

[0087] With reference to Fig. 3 and Fig. 4A to Fig. 4C, the liquid crystal display panel may further include a first pin 51, a second pin 52, a third pin 53, and a fourth pin 54. The first pin 51, the second pin 52, the third pin 53, and the fourth pin 54 may wrap around the same side edge of the first substrate 1. The first pin 51 and the second pin 52 may each be connected to two ends of the first heating electrode 41. The third pin 53 and the fourth pin 54 may each be connected to two ends of the at least one heating electrode group 40. Each of the first pin 51, the second pin 52, the third pin 53, and the fourth pin 54 may include a first sub-pin 501, a second sub-pin 502, and a third sub-pin 503, wherein the second sub-pin 502 may connect the first sub-pin 501 and the third sub-pin 503.

[0088] Fig. 5A is a schematic diagram of a first lead and a second lead according to embodiments of the present disclosure. Fig. 5B is a bottom view of Fig. 5A.

[0089] With reference to Fig. 5A and Fig. 5B, the liquid crystal display panel may further comprise a first lead 61 and a second lead 62, wherein the first lead 61 is connectable to a first voltage and the second lead 62 is connectable to a second voltage. For example, the first lead 61 is connected to a positive voltage and the second lead 62 is connected to a negative voltage. The second sub-pin 502 of the first pin 51 may be connected to the first lead 61, and the second sub-pin 502 of the second pin 52 may be connected to the second lead 62.

[0090] Alternatively, the liquid crystal display panel may further comprise a first lead 61, a second lead 62, a third lead 63, and a fourth lead 64, wherein the first lead 61 and the second lead 62 are connectable to a first voltage source; the third lead 63 and the fourth lead 64 are connectable to a second voltage source. The second sub-pin 502 of the first pin 51 may be connected to the first lead 61, the second sub-pin 502 of the second pin 52 may be connected to the second lead 62, the second sub-pin 502 of the third pin 53 may be connected to the third lead 63, and the second sub-pin 502 of the fourth pin 54 may be connected to the fourth lead 64.

[0091] Referring to the Fig. 5A and Fig. 5B, when the lead wire is led out, it may be led through the opening position of the backlight module. Specifically, the backlight module may have a hole at each of two opposite corners, such as opening a hole in each of the left and right legs of the backlight module, through which the first lead wire 61 and the second lead wire 62 are respectively led. In one embodiment, a hole may also be opened in one corner of the backlight module, and the first lead wire 61 and the second lead wire 62 are led out through the same hole.

[0092] In the embodiments of the present disclosure, the positive and negative electrode leads may be connected to the power supply via the connector. The connector is connected to the power supply to supply power, thereby realizing circuit wiring. A metal pin may be formed on the two long side edges of the liquid crystal display device, or on the two short side edges, or on the same side edge. The heating electrode and the positive and negative electrode leads are connected via the metal pin. The contact area between the metal pin and the heating electrode is large, and heat conduction is fast, which can improve the heating efficiency of the liquid crystal display device.

[0093] Fig. 6 is a structural diagram of a liquid crystal display panel according to other embodiments of the present disclosure.

[0094] Referring to Fig. 6, the liquid crystal display panel may further comprise a backlight module 30 located on a side of the first substrate 1 remote from the second substrate 2, and a first polarizer 7 located between the backlight module 30 and the first substrate 1, wherein the heating electrode layer 4 is located between the first polarizer 7 and the first substrate 1.

[0095] Alternatively, the backlight module 30 may include a back plate 14, a light source 17, a reflective plate 13, a light guide plate 12, and an optical film group 11.

[0096] The back plate 14 can be used to support and secure the light guide plate 12 and the optical film assembly 11, etc. The back plate 14 can include a bottom plate and side walls. The bottom plate can be rectangular in shape, and the four side walls are vertically connected to the bottom plate around the perimeter of the bottom plate to form a receiving cavity for receiving the light guide plate 12, the reflective disc 13, the optical film assembly 11, and other structures.

[0097] Alternatively, optical film group 11 may include optical films such as diffusion films and light-amplifying films. It should be understood that optical film group 11 may also include other types of optical films. The types of optical films in optical film group 11 can be selected depending on actual usage needs.

[0098] Alternatively, the light source 17 may comprise a plurality of light-emitting diodes (LEDs).

[0099] Alternatively, a seal may be applied between the liquid crystal layer 3 and the first substrate 1 and between the liquid crystal layer 3 and the second substrate 2 to prevent contamination of the liquid crystal.

[0100] Alternatively, the material of the heating electrode of the heating electrode layer 4 may be a high resistivity material such as ITO (indium tin oxide), IZO (indium zinc oxide), molybdenum, nickel, chromium, tungsten, etc. The material of the heating electrode can be adaptively adjusted according to the actual situation.

[0101] Alternatively, the liquid crystal display panel may also include a first polarizer 7 and a second polarizer 8. The first polarizer 7 may be disposed between the optical film group 11 and the heating electrode layer 4, and the second polarizer 8 may be disposed between the second substrate 2 and a lamination adhesive 15.

[0102] Alternatively, the pin 5 may be electrically connected to the first substrate 1 and the heating electrode layer 4, and the supply line 61 may also be connected to the pin 5.

[0103] Alternatively, a buffer element such as buffer foam 19 is provided between the support surface of an adhesive frame 18 and the second polarizer 8.

[0104] Alternatively, a super-adhesive double-sided tape 20 may be provided over the adhesive frame 18 so that the top cover glass 16 can be fixed by the super-adhesive double-sided tape 20 and the laminating adhesive 15.

[0105] In the embodiments of the present disclosure, the edge of the heating electrode layer 4 is closer to the side edge of the first substrate 1 in the first direction (X direction) than the edge of the first polarizer 7; and / or in the second direction (Y direction), the edge of the heating electrode layer 4 is closer to the side edge of the first substrate 1 than the edge of the first polarizer 7.

[0106] The embodiments of the present disclosure also provide a display device that may include the above-mentioned liquid crystal display panel. The display device may be used as a vehicle-mounted display device on a moving object, such as a car, or may be a display device of, for example, a laptop. Of course, the embodiments of the present disclosure are not limited thereto. For example, the display device may be any product or component with a display function, such as a smartphone, a wearable smartwatch, data glasses, a tablet computer, a television, a display, a digital photo frame, a navigator, a vehicle-mounted display, e-books, etc.

[0107] For example, the display device may be an electronic vehicle rearview mirror.

[0108] Fig. 7 is a flowchart of a method of manufacturing a liquid crystal display panel according to embodiments of the present disclosure.

[0109] With reference to Fig. 7, the method comprises steps S701 to S708.

[0110] In step S701, the liquid crystal is encapsulated by the first substrate and the second substrate by a frame adhesive, and a large panel is formed by cell assembling.

[0111] In step S702, the thinning of the large plate or the preparation of the high-resistance film is completed.

[0112] In step S703, an electrode heating layer is formed on a side of the first substrate remote from the second substrate.

[0113] In the embodiments of the present disclosure, the electrode heating layer may be applied to the Fig. 1B, Fig. 2 and Fig. 3 can be produced in the manner shown.

[0114] In the embodiments of the present disclosure, in the liquid crystal display panel, after the cell assembling process of the first substrate and the second substrate, a heating electrode is formed on the back of the first substrate; and the mark on the first substrate is used to align the heating electrode, so that the accuracy is high. By reducing the lamination process of the substrate having the heating electrode to the panel, the distance between the heating electrode and the liquid crystal becomes smaller, and at the same time, the heating efficiency is increased. Due to the reduction of one layer of glass substrate and OCR, it contributes to the thinning of the module, thereby saving the production material cost and time cost of liquid crystal display devices.

[0115] In step S704, cutting is performed and the polarizer is attached.

[0116] In the embodiments of the present disclosure, the dimension of the second polarizer may be smaller than the dimension of the second substrate, thereby not affecting the metal pin being connected to the heating electrode.

[0117] In step S705, bonding into the microelectronic device and / or the flexible circuit board is performed.

[0118] In step S706, the metal pin is assembled.

[0119] In the embodiments of the present disclosure, the arrangement of the metal pin may be Fig. 4A and Fig. 4B. The side that comes into contact with the heating electrode can be Fig. 4A. The side not in contact with the heating electrode can be a solid piece of metal. Wires are welded to the side not in contact with the heating electrode to carry the leads for the positive and negative electrodes.

[0120] In step S707, the leads for the positive and negative electrodes are led out from the opening position of the backlight and the assembly is completed.

[0121] In detail, it can Fig. 5. The backlight may have a hole in each of the two opposite corners through which the positive and negative electrode leads can pass, respectively; it is also possible to open only one hole so that the positive and negative electrode leads pass through the same hole. The positive and negative electrode leads can connect the metal pin and the connector, and the connector is connected to the power supply to input power, thereby achieving circuit conduction.

[0122] In step S708, the leads for the positive and negative electrodes are connected to the connector and the liquid crystal display panel is completed.

[0123] In particular, the leads for the positive and negative electrodes may be connected to the power supply via the connector, and the connector is connected to the power supply to input power, thereby achieving circuit conduction. The connection shown in FIG. Fig. 1B and Fig. 2, the first substrate 1 has only one set of positive and negative electrodes; by supplying the same current, a uniform surface temperature of the liquid crystal display device can be achieved by the split construction of the first substrate. The one with reference to Fig. 3 The first substrate may have two (or more) sets of positive and negative electrodes. By applying different currents, a uniform surface temperature of the liquid crystal display device can be achieved.

[0124] According to the embodiments of the present disclosure, the description of the method for manufacturing a liquid crystal display panel may be cross-referenced to the description of the liquid crystal display panel and the liquid crystal display device and will not be described again here.

[0125] While some embodiments of the general inventive concept of the present disclosure have been illustrated and described, those of ordinary skill in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

[1] Liquid crystal display panel comprising: a first substrate; a second substrate disposed opposite the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and a heating electrode layer arranged on a side of the first substrate remote from the second substrate, wherein the heating electrode layer comprises a plurality of heating electrodes each serving to heat the liquid crystals in the liquid crystal layer; and wherein the first substrate comprises a first region and a second region, the first region being closer to a side edge of the first substrate relative to the second region, the plurality of heating electrodes comprising a first heating electrode located in the first region and at least one second heating electrode located in the second region, a heating power of the first heating electrode being greater than a heating power of each of the at least one second heating electrode. [2] The liquid crystal display panel according to claim 1, wherein the first substrate includes a first surface remote from the second substrate, the heating electrode layer being in direct contact with the first surface. [3] A liquid crystal display panel according to claim 1 or 2, wherein the liquid crystal display panel further comprises: a backlight module located on a side of the first substrate remote from the second substrate, and a first polarizer located between the backlight module and the first substrate, wherein the heating electrode layer is located between the first polarizer and the first substrate. [4] The liquid crystal display panel according to claim 1 or 2, wherein an area of an orthographic projection of the first heating electrode on the first surface is larger than an area of an orthographic projection of each of the at least one second heating electrode on the first surface. [5] A liquid crystal display panel according to claim 4, wherein the first heating electrode comprises a ring electrode located in the first region; the second heating electrode comprises a stripe electrode located in the second region. [6] The liquid crystal display panel according to claim 5, wherein the heating electrode layer comprises a plurality of heating electrode groups, at least one of the heating electrode groups comprising a plurality of the second heating electrodes and a plurality of interconnections; wherein in at least one of the heating electrode groups, a plurality of the second heating electrodes and the plurality of connections are arranged alternately along a first direction, and two adjacent ones of the second heating electrodes are electrically connected by the connection, and wherein the plurality of heating electrode groups are spaced apart from one another along a second direction, the second direction being different from the first direction. [7] The liquid crystal display panel according to claim 6, wherein in at least one of the heating electrode groups, the areas of orthographic projections of the plurality of the second heating electrodes on the first surface decrease in a direction from a side edge of the first substrate to a center position of the first substrate. [8] The liquid crystal display panel according to claim 7, wherein each of the second heating electrodes has a first dimension along the first direction; wherein in at least one of the heating electrode groups, the first dimensions of the plurality of the second heating electrodes decrease in a direction from a side edge of the first substrate to a center position of the first substrate. [9] The liquid crystal display panel according to claim 8, wherein each of the second heating electrodes has a second dimension along the second direction; wherein in at least one of the heating electrode groups, the second dimensions of the plurality of the second heating electrodes are substantially the same. [10] A liquid crystal display panel according to claim 9, wherein the first substrate comprises a first side edge and a second side edge, the first side edge and the second side edge being arranged opposite each other in the first direction; wherein the first heating electrode comprises a first electrode portion located near the first side edge and a second electrode portion located near the second side edge; wherein the first electrode part is connected to a first voltage and the second electrode part is connected to a second voltage, the first voltage being higher than the second voltage. [11] A liquid crystal display panel according to claim 10, wherein one end of each of the heating electrode groups in the first direction is connected to the first electrode part, and the other end of each of the heating electrode groups in the first direction is connected to the second electrode part. [12] A liquid crystal display panel according to claim 1 or 2, wherein the heating electrode layer comprises a plurality of heating electrode groups, at least one of the heating electrode groups comprising a plurality of the second heating electrodes and a plurality of interconnections; wherein in at least one of the heating electrode groups, a plurality of the second heating electrodes and the plurality of connections are arranged alternately along a second direction, and two adjacent ones of the second heating electrodes are electrically connected by the connection; and wherein the plurality of heating electrode groups are spaced apart from one another along a first direction, the second direction being different from the first direction. [13] The liquid crystal display panel according to claim 12, wherein in at least one of the heating electrode groups, the areas of orthographic projections of the plurality of second heating electrodes on the first surface decrease in a direction from a side edge of the first substrate toward a center position of the first substrate. [14] The liquid crystal display panel according to claim 13, wherein each of the second heating electrodes has a second dimension along the second direction; wherein in at least one of the heating electrode groups, the second dimensions of the plurality of second heating electrodes decrease in a direction from a side edge of the first substrate to a center position of the first substrate; and / or wherein each of the second heating electrodes has a first dimension along the first direction, wherein in at least one of the heating electrode groups, the first dimensions of the plurality of second heating electrodes are substantially the same. [15] The liquid crystal display panel according to claim 14, wherein the first substrate comprises a third side edge and a fourth side edge, the third side edge and the fourth side edge being arranged opposite each other in the second direction; wherein the first heating electrode comprises a third electrode portion located near the third side edge and a fourth electrode portion located near the fourth side edge; wherein the third electrode part is connected to a first voltage and the fourth electrode part is connected to a second voltage, the first voltage being higher than the second voltage. [16] A liquid crystal display panel according to claim 15, wherein one end of each of the heating electrode groups in the second direction is connected to the third electrode part, and the other end of each of the heating electrode groups in the second direction is connected to the fourth electrode part. [17] A liquid crystal display panel according to claim 1 or 2, wherein the first heating electrode comprises a U-shaped electrode located in the first region; the second heating electrode comprises a U-shaped electrode located in the second region. [18] A liquid crystal display panel according to claim 17, wherein a plurality of the second heating electrodes form at least one heating electrode group; wherein the first heating electrode is connected to a first voltage source, and the at least one heating electrode group is connected to a second voltage source, wherein the voltage provided by the first voltage source is different from the voltage provided by the second voltage source. [19] A liquid crystal display panel according to claim 17 or 18, wherein the first heating electrode has a first dimension along the first direction and a second dimension along the second direction; wherein at least one of the second heating electrodes has a first dimension along the first direction and a second dimension along the second direction; wherein the first dimension of the first heating electrode is greater than the first dimension of the second heating electrode, and / or the second dimension of the first heating electrode is greater than the second dimension of the second heating electrode. [20] The liquid crystal display panel according to claim 1 or 2, wherein the liquid crystal display panel further comprises a first pin and a second pin, the first pin wrapping the first side edge of the first substrate and the second pin wrapping the second side edge of the first substrate. [21] The liquid crystal display panel according to claim 20, wherein each of the first pin and the second pin comprises a first sub-pin, a second sub-pin, and a third sub-pin, the second sub-pin connecting the first sub-pin and the third sub-pin; and wherein the first sub-pin is located on a surface of the heating electrode layer remote from the first substrate, the third sub-pin is located on a surface of the first substrate close to the second substrate, and the second sub-pin is disposed opposite to the first side edge or the second side edge of the first substrate. [22] The liquid crystal display panel according to claim 21, wherein a plurality of the first sub-pins are arranged spaced from each other in the second direction, a plurality of the second sub-pins are arranged spaced from each other in the second direction, and a plurality of the third sub-pins are arranged continuously in the second direction. [23] The liquid crystal display panel according to claim 1 or 2, wherein the liquid crystal display panel further comprises a first pin and a second pin, the first pin wrapping the third side edge of the first substrate and the second pin wrapping the fourth side edge of the first substrate. [24] The liquid crystal display panel according to claim 23, wherein each of the first pin and the second pin includes a first sub-pin, a second sub-pin, and a third sub-pin, the second sub-pin connecting the first sub-pin and the third sub-pin; and wherein the first sub-pin is located on a surface of the heating electrode layer remote from the first substrate, the third sub-pin is located on a surface of the first substrate close to the second substrate, the second sub-pin is disposed opposite to the third side edge or the fourth side edge of the first substrate. [25] The liquid crystal display panel according to claim 24, wherein a plurality of the first sub-pins are arranged spaced from each other in the first direction, a plurality of the second sub-pins are arranged spaced from each other in the first direction, and a plurality of the third sub-pins are arranged continuously in the first direction. [26] The liquid crystal display panel according to claim 1 or 2, wherein the liquid crystal display panel further comprises a first pin, a second pin, a third pin, and a fourth pin, the first pin, the second pin, the third pin, and the fourth pin wrapping the same side edge of the first substrate; the first pin and the second pin are respectively connected to two ends of the first heating electrode, the third pin and the fourth pin are respectively connected to two ends of the at least one heating electrode group; each of the first pin, the second pin, the third pin, and the fourth pin comprises a first sub-pin, a second sub-pin, and a third sub-pin, the second sub-pin connecting the first sub-pin and the third sub-pin. [27] The liquid crystal display panel according to claim 21 or 24, wherein the liquid crystal display panel further comprises a first lead and a second lead, the first lead being connected to a first voltage and the second lead being connected to a second voltage; the second sub-pin of the first pin being connected to the first lead, and the second sub-pin of the second pin being connected to the second lead. [28] The liquid crystal display panel according to claim 26, wherein the liquid crystal display panel further comprises a first lead, a second lead, a third lead, and a fourth lead, wherein the first lead and the second lead are connected to a first voltage source; the third lead and the fourth lead are connected to a second voltage source; wherein the second sub-pin of the first pin is connected to the first lead, the second sub-pin of the second pin is connected to the second lead, the second sub-pin of the third pin is connected to the third lead, and the second sub-pin of the fourth pin is connected to the fourth lead. [29] A liquid crystal display panel according to claim 3, wherein an edge of the heating electrode layer in the first direction is closer to the side edge of the first substrate than an edge of the first polarizer; and / or wherein an edge of the heating electrode layer in the second direction is closer to the side edge of the first substrate than an edge of the first polarizer. [30] Liquid crystal display device, characterized by that the liquid crystal display device comprises a liquid crystal display panel according to one of claims 1 to 29.

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