CN107329307B - Display device - Google Patents
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- CN107329307B CN107329307B CN201710701562.2A CN201710701562A CN107329307B CN 107329307 B CN107329307 B CN 107329307B CN 201710701562 A CN201710701562 A CN 201710701562A CN 107329307 B CN107329307 B CN 107329307B
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- temperature
- heating
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
Abstract
The invention discloses a display device, belonging to the technical field of display, comprising: a display panel including a plurality of sub-regions; the device comprises a temperature sensing module, a heating module and a signal processing module; the temperature sensing module comprises a plurality of first electrodes, the heating module comprises a plurality of heating units, the first electrodes and the heating units are arranged in a one-to-one correspondence manner, and each sub-area is provided with the first electrodes and the heating units; the first electrode and the ground form a first capacitor, or the display device comprises a second electrode, and the first electrode and the second electrode form a second capacitor; the signal processing module detects the first capacitor or the second capacitor to obtain the temperature of the corresponding first electrode; the signal processing module determines the sub-region where the first electrode needing to be heated is located according to the temperatures of the plurality of first electrodes, and controls the corresponding heating unit to heat. Power consumption can be reduced relative to the prior art.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
The display devices provided in the prior art are various in types, and the functions of the display devices are different according to different use scenes and requirements of users.
The special display device provided by the prior art can be applied to cold weather with extremely low temperature, and needs to be started up quickly and perform display work in a low-temperature environment. The display panel provided by the prior art cannot normally display and work in a low-temperature environment due to the influence of the material of the display panel, so that a heating plate is required to be arranged in the characteristic display device, the display panel is heated when the display device is started, and the temperature environment capable of normally displaying and working is provided for the display panel.
Referring to fig. 1, the special display device provided in fig. 1 includes a display panel 01, a backlight module 02, and a heating plate 03 sandwiched between the display panel 01 and the backlight module 02. When the special display device is started, the heating plate 03 and the display panel 01 are started simultaneously. In an environment with a low temperature of-50 ℃, the heating plate 03 can raise the temperature of the display panel 01 to-14 ℃ within 5 minutes, so that the display panel 01 can rapidly switch pictures and perform normal display work.
However, in the special display device provided by the prior art, the heating plate 03 is disposed on the whole surface, and the display panel 01 is heated unevenly, so that a part of the area is overheated, and a part of the area is overcooled, which causes uneven display of the display panel 01 and affects the display effect of the whole special display device. In addition, the heating plate 03 is started to perform heating operation when the special display device is started, the ambient temperature is not detected, and the power consumption loss is large when the special display device is used in a normal temperature environment.
Disclosure of Invention
In view of the foregoing, the present invention provides a display device.
The present invention provides a display device including: a display panel including a plurality of sub-regions; the device comprises a temperature sensing module, a heating module and a signal processing module; the temperature sensing module comprises a plurality of first electrodes, the heating module comprises a plurality of heating units, the first electrodes and the heating units are arranged in a one-to-one correspondence manner, and each sub-area is provided with the first electrodes and the heating units; the first electrode and the ground form a first capacitor, or the display device comprises a second electrode, and the first electrode and the second electrode form a second capacitor; the signal processing module detects the first capacitor or the second capacitor to obtain the temperature of the corresponding first electrode; the signal processing module determines the sub-region where the first electrode needing to be heated is located according to the temperatures of the plurality of first electrodes, and controls the corresponding heating unit to heat.
In some alternative embodiments, the display panel and the heating module are oppositely disposed; a plurality of first electrodes are integrated in the display panel; a first polaroid is arranged on one side surface, close to the heating module, of the display panel, and a plurality of first electrodes are arranged on one side surface, deviating from the heating module, of the first polaroid.
In some alternative embodiments, the material of the first electrode comprises a transparent metal oxide semiconductor.
In some alternative embodiments, the heating unit comprises at least one resistive wire.
In some optional embodiments, the signal processing module comprises a temperature detection unit, a comparison unit, a central control unit and a temperature control unit; the temperature detection unit, the comparison unit, the central control unit and the temperature control unit are arranged in the same chip; or the temperature detection unit, the comparison unit, the central control unit and the temperature control unit are arranged in at least two chips, and the at least two chips are electrically connected through the flexible circuit board.
In some optional embodiments, when the display device is started, the temperature sensing module and the signal processing module work, and the heating module is in a standby state; the temperature detection unit acquires the temperatures of the plurality of first electrodes and the corresponding sub-regions.
In some optional embodiments, the comparison unit compares the temperatures of the plurality of first electrodes with a preset temperature; when the temperatures of the first electrodes are all higher than the preset temperature, the comparison unit transmits the comparison result to the central control unit, the central control unit transmits a first electric signal to the temperature control unit, and the heating module is kept in standby; when at least one temperature in the temperatures of the plurality of first electrodes is lower than the preset temperature, the comparison unit transmits information of a subregion where the first electrode corresponding to the at least one temperature is located to the central control unit, the central control unit transmits a second electric signal to the temperature control unit, the heating module works, and the temperature control unit controls the corresponding heating unit to heat.
In some optional embodiments, the signal processing module acquires the temperatures of the plurality of first electrodes at a time every time T; wherein T is more than or equal to 1min and less than or equal to 5 min.
In some optional embodiments, when the signal processing module detects that the temperature of the sub-region heated by the heating unit is greater than the preset temperature, the heating unit stops heating.
In some optional embodiments, the plurality of first electrodes are bonded to the first polarizer through a glue material.
In some optional embodiments, the display panel further comprises a common electrode, and the common electrode is multiplexed as the second electrode.
In some optional embodiments, the display panel is a liquid crystal display panel, and the display device further includes a backlight module; the heating module is clamped between the liquid crystal display panel and the backlight module.
Compared with the prior art, the display device provided by the invention at least realizes the following beneficial effects:
the display device provided by the invention is provided with the temperature sensing module and the heating module, wherein the temperature sensing module comprises a plurality of first electrodes, the heating module comprises a plurality of heating units, and the first electrodes and the heating units are arranged in a one-to-one correspondence manner. The display panel includes a plurality of sub-regions, each of which has a first electrode and a heating unit disposed therein. The signal processing module determines the sub-region where the first electrode needing to be heated is located according to the temperatures of the plurality of first electrodes, and controls the corresponding heating unit to heat. According to the display device provided by the invention, the display panel is divided into a plurality of sub-regions, and the sub-regions needing to be heated are independently heated by sensing the temperature of each sub-region, so that the power consumption can be reduced compared with the prior art; in addition, the display device provided by the invention only independently heats the sub-region to be heated, and compared with the prior art, the display device can avoid uneven display caused by overhigh temperature of the local region due to integral heating, and can improve the display effect. In addition, in the display device provided by the invention, the signal processing module acquires the temperature of the corresponding first electrode by detecting that the first electrode forms a first capacitor with the ground or the first electrode forms a second capacitor with the second electrode, and the temperature sensing module is light and thin and is easy to integrate in the display device by using the first electrode as a structure for sensing the temperature.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic cross-sectional view of a special display device provided by the prior art;
fig. 2 is a schematic cross-sectional view of a display device according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a planar structure of a display panel in the display device provided in FIG. 2;
FIG. 4 is a schematic plan view of a temperature sensing module in the display device shown in FIG. 2;
FIG. 5 is a schematic plan view of a heating module of the display device provided in FIG. 2;
fig. 6 is a schematic cross-sectional view of another display device according to an embodiment of the invention;
FIG. 7 is a schematic plan view of a heating module in a display device according to another embodiment of the present invention;
FIG. 8 is a schematic diagram of a partial structure of another display device according to an embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of another display device according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 2, fig. 3, fig. 4 and fig. 5 in combination, fig. 2 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the present invention, fig. 3 is a schematic plan structure diagram of a display panel in the display device provided in fig. 2, fig. 4 is a schematic plan structure diagram of a temperature sensing module in the display device provided in fig. 2, and fig. 5 is a schematic plan structure diagram of a heating module in the display device provided in fig. 2.
An embodiment of the present invention provides a display device, including: a display panel 10, the display panel 10 comprising a plurality of sub-regions 11; a temperature sensing module 20, a heating module 30 and a signal processing module 40; the temperature sensing module 20 comprises a plurality of first electrodes 21, the heating module 30 comprises a plurality of heating units 31, the first electrodes 21 and the heating units 31 are arranged in a one-to-one correspondence manner, and each subregion 11 is provided with the first electrodes 21 and the heating units 31; the first electrode 21 forms a first capacitance with ground, or the display device comprises a second electrode, and the first electrode 21 and the second electrode form a second capacitance; the signal processing module 40 detects the first capacitor or the second capacitor to obtain the temperature of the corresponding first electrode 21; the signal processing module 40 determines the sub-region 11 where the first electrode 21 to be heated is located according to the temperatures of the plurality of first electrodes 21, and controls the corresponding heating unit 31 to heat.
The display device provided by the embodiment of the invention comprises a display panel 10, a temperature sensing module 20, a heating module 30 and a signal processing module 40. In other implementation manners of the present application, the Display panel 10 may also be an Organic Light Emitting Display panel (OLED), a Micro Light Emitting diode Display (Micro LED), a Quantum Dot Display (QLED), electronic paper, or other types of panels or Display components, and the present application does not limit this to be specific to actual situations. The display panel 10 includes a plurality of sub-regions 11, and fig. 3 only illustrates six sub-regions 11, it can be understood that, in a specific implementation manner, the division of the sub-regions needs to be set according to specific situations such as the size of the display panel 10, the accuracy of the display device for temperature sensing, and the like, and the number of the sub-regions 11 is not particularly limited in the embodiment of the present invention.
The temperature sensing module 20 is configured to sense temperature information, and specifically, the temperature sensing module 20 includes a plurality of first electrodes 21, and the first electrodes 21 form a first capacitance with the ground, or the display device includes a second electrode, and the first electrodes 21 and the second electrode form a second capacitance. A first capacitance formed by the first electrode 21 and the ground is a self capacitance, and a second capacitance formed by the first electrode 21 and the second electrode is a mutual capacitance. The second electrode may be a multiplexing of an existing electrode structure in the display device, for example, the display panel 10 further includes a common electrode, and the second electrode may be a multiplexing of a common electrode, or the display panel 10 further includes a touch electrode, and the second electrode may be a multiplexing of a touch electrode; the second electrode may also be manufactured separately and used to form a second capacitor with the first electrode 21, and the embodiment of the present invention does not specifically limit the position, material, and shape of the second electrode.
The embodiment of the invention utilizes the linear change relation between the first capacitor or the second capacitor and the temperature to sense the temperature, and the specific principle is that the dielectric constant of the material is known to change linearly along with the temperature change; as is known, the formula C of the plate capacitor is ═ S/4 pi kd, where e is the dielectric constant (relative dielectric constant) of the material, k is the constant of the electrostatic force, S is the area of the two opposite plates, and d is the vertical distance between the two opposite plates, and according to the formula of the plate capacitor, the plate capacitor C varies linearly with the variation of the dielectric constant e; therefore, the change of the dielectric constant epsilon can be reflected by the change of the plate capacitance C, and the change of the dielectric constant epsilon reflects the change of the temperature; in summary, the first capacitor or the second capacitor has a linear variation relationship with the temperature, and the signal processing module can obtain the temperature of the first electrode by analyzing the first capacitor or the second capacitor, so that the temperatures of the plurality of first electrodes 21 determine the sub-area 11 where the first electrode 21 needs to be heated.
In the embodiment of the present invention, fig. 3 only illustrates that the display panel 10 includes six sub-regions 11, and correspondingly, in fig. 4, the temperature sensing module 20 includes six first electrodes 21, and the first electrodes 21 are disposed in one-to-one correspondence with the sub-regions 11. Optionally, the first electrode 21 is electrically connected to the signal processing module 40 through a first signal line 50.
The heating module 30 is used for heating the display panel 10, and includes a plurality of heating units 31, each heating unit 31 can work independently, and for heating the sub-region 11 where the heating unit is located, the display panel 10 can be heated in a partitioned manner, so as to save power consumption. The signal processing module 40 determines the sub-region 11 where the first electrode 21 needing to be heated is located according to the temperatures of the plurality of first electrodes 21, and controls the corresponding heating unit 31 to heat, so that only the sub-region 11 needing to be heated is heated after the temperature of the display panel 10 is detected, power consumption is saved, and overheating of a part of the sub-region and uneven display of the display panel caused by heating of the sub-region needing not to be heated can be prevented. In fig. 4, the temperature sensing module 20 includes six first electrodes 21, and in fig. 5, the heating module 30 includes six heating units 31, and the first electrodes 21 are disposed in one-to-one correspondence with the heating units 31. Alternatively, the heating unit 31 is electrically connected to the signal processing module 40 through a second signal line 51. In the present embodiment, the specific heating manner of the heating unit 31 is not particularly limited.
In the display device provided in this embodiment, the first electrodes 21 and the heating units 31 are disposed in a one-to-one correspondence, wherein the first electrodes 21 and the heating units 31 are both electrically connected to the signal processing module 40. The signal processing module 40 may acquire, analyze, calculate an electrical signal of the first electrode 21, and may output a control signal to the heating unit 31. The specific arrangement of the signal processing module 40 is various, for example, the signal processing module 40 may be an IC chip; for example, the signal processing module 40 may be a plurality of IC chips, and the IC chips are electrically connected to each other through a flexible circuit board, and the specific arrangement manner of the signal processing module 40 is not particularly limited in this embodiment.
The display device provided by the embodiment of the invention is provided with the temperature sensing module and the heating module, wherein the temperature sensing module comprises a plurality of first electrodes, the heating module comprises a plurality of heating units, and the first electrodes and the heating units are arranged in a one-to-one correspondence manner. The display panel includes a plurality of sub-regions, each of which has a first electrode and a heating unit disposed therein. The signal processing module determines the sub-region where the first electrode needing to be heated is located according to the temperatures of the plurality of first electrodes, and controls the corresponding heating unit to heat. According to the display device provided by the invention, the display panel is divided into a plurality of sub-regions, and the sub-regions needing to be heated are independently heated by sensing the temperature of each sub-region, so that the power consumption can be reduced compared with the prior art; in addition, the display device provided by the invention only independently heats the sub-region to be heated, and compared with the prior art, the display device can avoid uneven display caused by overhigh temperature of the local region due to integral heating, and can improve the display effect. In addition, in the display device provided by the invention, the signal processing module acquires the temperature of the corresponding first electrode by detecting that the first electrode forms a first capacitor with the ground or the first electrode forms a second capacitor with the second electrode, and the temperature sensing module is light and thin and is easy to integrate in the display device by using the first electrode as a structure for sensing the temperature.
In some alternative embodiments, please refer to fig. 6, and fig. 6 is a schematic cross-sectional structure diagram of another display device provided in the embodiments of the present invention. The display panel 10 and the heating module 30 are oppositely arranged; a plurality of first electrodes 21 are integrated in the display panel 10; the display panel 10 is provided with a first polarizer 12 on a side surface close to the heating module 30, and the plurality of first electrodes 21 are disposed on a side surface of the first polarizer 12 away from the heating module 30. In the display device provided in this embodiment, a first polarizer 12 is disposed on a side surface of the display panel 10 close to the heating module 30, and the first polarizer 12 may filter light entering the display panel 10, so that natural light is changed into polarized light, and polarized light suitable for display is provided for the display panel 10. Wherein, a plurality of first electrodes 21 are integrated in the display panel 10 and disposed on a side surface of the first polarizer 12 facing away from the heating module 30. The first electrode 21 may be manufactured during the process of manufacturing the display panel, and then the first polarizer 12 is disposed on the surface of the first electrode 21, so that the manufacturing process of the temperature sensing module 20 is simple, and the display device is light and thin.
In some alternative embodiments, the material of the first electrode 21 includes a transparent metal oxide semiconductor. For example, Indium Gallium Zinc Oxide (IGZO), Indium Zinc Oxide (IZO), Indium Tin Oxide (ITO), or Indium Tin Zinc Oxide (ITZO). In this embodiment, the material of the first electrode 21 may include any one of indium gallium zinc oxide, indium tin oxide, and indium tin zinc oxide, or the material of the first electrode 21 may include any two or more of indium gallium zinc oxide, indium tin oxide, and indium tin zinc oxide, which is not limited in this embodiment.
In some alternative embodiments, the plurality of first electrodes 21 are adhered to the first polarizer 12 by a glue material. In the display device provided in this embodiment, the first electrode is used as a structure for sensing temperature, and the signal processing module obtains the temperature of the corresponding first electrode by detecting that the first electrode forms a first capacitance with the ground or that the first electrode forms a second capacitance with the second electrode; the variation of the first capacitor or the second capacitor along with the temperature is linearly related to the dielectric constant of the material, so that the adhesive material can be a material sensitive to the variation of the dielectric constant along with the temperature. In alternative implementations, first polarizer 12 may be selected from materials that are sensitive to changes in dielectric constant with temperature. The glue material or the first polarizer 12 is made of a material sensitive to the change of the dielectric constant along with the temperature, and the variation of the first capacitor or the second capacitor along with the temperature can be increased, so that the signal quantity of the electric signal acquired by the signal processing module is increased, the acquisition and analysis of the temperature of the corresponding first electrode are facilitated, and the temperature sensing precision is improved.
In some alternative embodiments, please refer to fig. 7, fig. 7 is a schematic plan view illustrating a heating module in another display device according to an embodiment of the present invention. Fig. 7 follows the reference numerals of fig. 5, and the description of the same parts is omitted. Fig. 7 provides a display device in which the heating unit 31 includes at least one resistance wire 311. Fig. 7 only illustrates an embodiment in which the heating unit 31 includes one resistance wire 311, and it is understood that the heating unit 31 may include more than two resistance wires 311, which is not particularly limited by the embodiment.
In some optional embodiments, please refer to fig. 8, and fig. 8 is a partial structural schematic diagram of another display device provided in the embodiments of the present invention. In particular, fig. 8 illustrates a temperature sensing module 20, a heating module 30, and a signal processing module 40. Fig. 8 provides a display device in which a signal processing module 40 includes a temperature detection unit 41, a comparison unit 42, a central control unit 43, and a temperature control unit 44; the temperature detection unit 41, the comparison unit 42, the central control unit 43 and the temperature control unit 44 are arranged in the same chip; alternatively, the temperature detection unit 41, the comparison unit 42, the central control unit 43, and the temperature control unit 44 are provided in at least two chips, and the at least two chips are electrically connected through a flexible wiring board. The temperature detecting unit 41, the comparing unit 42, the central control unit 43 and the temperature control unit 44 are used for specifically implementing various functions of the signal processing module 40, and various functions of the signal processing module 40 include but are not limited to: the signal processing module 40 detects the first capacitor or the second capacitor to obtain the temperature of the corresponding first electrode 21; the signal processing module 40 determines the sub-region 11 where the first electrode 21 to be heated is located according to the temperatures of the plurality of first electrodes 21, and controls the corresponding heating unit 31 to heat. In the display device provided in this embodiment, the signal processing module 40 includes a plurality of units, and each unit may be integrated in one chip or respectively disposed in a plurality of chips, which is not limited in this embodiment.
Next, specific operation of the temperature detection unit 41, the comparison unit 42, the central control unit 43, and the temperature control unit 44 will be described.
In some alternative embodiments, when the display device is powered on, the temperature sensing module 20 and the signal processing module 40 operate, and the heating module 30 is in standby; the temperature detection unit 41 acquires the temperatures of the plurality of first electrodes 21 and the corresponding sub-regions 11. In this embodiment, when the display device is turned on, the heating module 30 does not start to work at random, but first obtains the temperatures of the plurality of first electrodes 21 and the corresponding sub-areas 11 through the temperature detecting unit 41. Compared with the prior art, the power consumption of the display device is prevented from being increased under the condition that heating is not needed.
In some alternative embodiments, the comparison unit 42 compares the temperatures of the plurality of first electrodes 21 with a preset temperature; when the temperatures of the plurality of first electrodes 21 are all greater than the preset temperature, the comparison unit 42 transmits the comparison result to the central control unit 43, the central control unit 43 transmits a first electric signal to the temperature control unit 44, and the heating module 30 is kept in standby; when at least one of the temperatures of the plurality of first electrodes 21 is lower than the preset temperature, the comparing unit 42 transmits information of the sub-region 11 where the at least one first electrode 21 corresponding to the temperature is located to the central control unit 43, the central control unit 43 transmits a second electric signal to the temperature control unit 44, the heating module 30 operates, and the temperature control unit 44 controls the corresponding heating unit 31 to heat. In this embodiment, a preset temperature is set in the signal processing module 40, and the preset temperature is used for determining whether the temperature of the first electrode 21 is low or high. When the temperatures of the plurality of first electrodes 21 are all greater than the preset temperature, the display device does not need to be heated, and the heating module 30 is kept in standby. When at least one temperature is lower than the preset temperature, the display device needs to be heated, the heating module 30 works, and the temperature control unit 44 controls the corresponding heating unit 31 to heat. The display device that this embodiment provided only heats alone the subregion that needs the heating, for prior art, can avoid whole heating to cause the too high demonstration unevenness that leads to the fact of local area temperature, can promote display effect.
In some alternative embodiments, at intervals T, the signal processing module 40 acquires the temperature of the plurality of first electrodes 21 at a time; wherein T is more than or equal to 1min and less than or equal to 5 min. Alternatively, when the signal processing module 40 detects that the temperature of the sub-region 11 heated by the heating unit 31 is greater than the preset temperature, the heating unit 31 stops heating. In the display device provided in this embodiment, at an interval T, the signal processing module 40 may obtain the temperatures of the plurality of first electrodes 21 at one time, and compare the temperatures of the plurality of first electrodes 21 with the preset temperature again to determine the temperature condition of the current display device. When the heating unit 31 works, the heating unit 31 stops heating when the temperature of the heated sub-region 11 is higher than the preset temperature, so that local temperature overheating and uneven display effect of the display device caused by continuous work of the heating unit 31 are prevented, and the power consumption of the display device can be saved.
In some alternative embodiments, please refer to fig. 9, and fig. 9 is a schematic cross-sectional structure diagram of another display device according to an embodiment of the present invention. Fig. 9 follows the reference numerals of fig. 6, and the description of the same parts is omitted. Fig. 9 shows a display device in which the display panel 10 is a liquid crystal display panel, and the display device further includes a backlight module 60; the heating module 30 is sandwiched between the liquid crystal display panel and the backlight unit 60. The display device provided in this embodiment is a liquid crystal display device, and the backlight module 60 provides a light source for the liquid crystal display panel. According to the characteristics of the liquid crystal, the threshold voltage and the response time of the liquid crystal are increased in a low-temperature environment, so that the liquid crystal display panel is heated to provide a normal-temperature working environment for the liquid crystal display panel, which is one of the technical problems to be solved by the invention.
As can be seen from the above embodiments, the display device provided by the present invention at least achieves the following beneficial effects: the display device provided by the embodiment of the invention is provided with the temperature sensing module and the heating module, wherein the temperature sensing module comprises a plurality of first electrodes, the heating module comprises a plurality of heating units, and the first electrodes and the heating units are arranged in a one-to-one correspondence manner. The display panel includes a plurality of sub-regions, each of which has a first electrode and a heating unit disposed therein. The signal processing module determines the sub-region where the first electrode needing to be heated is located according to the temperatures of the plurality of first electrodes, and controls the corresponding heating unit to heat. According to the display device provided by the invention, the display panel is divided into a plurality of sub-regions, and the sub-regions needing to be heated are independently heated by sensing the temperature of each sub-region, so that the power consumption can be reduced compared with the prior art; in addition, the display device provided by the invention only independently heats the sub-region to be heated, and compared with the prior art, the display device can avoid uneven display caused by overhigh temperature of the local region due to integral heating, and can improve the display effect. In addition, in the display device provided by the invention, the signal processing module acquires the temperature of the corresponding first electrode by detecting that the first electrode forms a first capacitor with the ground or the first electrode forms a second capacitor with the second electrode, and the temperature sensing module is light and thin and is easy to integrate in the display device by using the first electrode as a structure for sensing the temperature.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A display device, comprising:
a display panel including a plurality of sub-regions and a common electrode;
the device comprises a temperature sensing module, a heating module and a signal processing module;
the temperature sensing module comprises a plurality of first electrodes, the heating module comprises a plurality of heating units, the first electrodes are arranged in one-to-one correspondence with the heating units, and each sub-area is provided with the first electrodes and the heating units;
the first electrode and the ground form a first capacitor, or the display device comprises a second electrode, the first electrode and the second electrode form a second capacitor, and the common electrode is multiplexed as the second electrode; the signal processing module detects the first capacitor or the second capacitor to obtain the temperature of the corresponding first electrode;
the signal processing module determines a sub-region where the first electrode to be heated is located according to the temperatures of the plurality of first electrodes, and controls the corresponding heating unit to heat;
the display panel and the heating module are arranged oppositely;
the plurality of first electrodes are integrated in the display panel; the display panel is provided with a first polaroid on one side surface close to the heating module, and the plurality of first electrodes are arranged on one side surface, deviating from the heating module, of the first polaroid.
2. The display device according to claim 1,
the material of the first electrode comprises a transparent metal oxide semiconductor.
3. The display device according to claim 1,
the heating unit comprises at least one resistance wire.
4. The display device according to claim 1,
the signal processing module comprises a temperature detection unit, a comparison unit, a central control unit and a temperature control unit;
the temperature detection unit, the comparison unit, the central control unit and the temperature control unit are arranged in the same chip; or the temperature detection unit, the comparison unit, the central control unit and the temperature control unit are arranged in at least two chips, and the at least two chips are electrically connected through a flexible circuit board.
5. The display device according to claim 4,
when the display device is started, the temperature sensing module and the signal processing module work, and the heating module is in a standby state; the temperature detection unit acquires the temperatures of the plurality of first electrodes and the corresponding sub-regions.
6. The display device according to claim 5,
the comparison unit compares the temperatures of the plurality of first electrodes with a preset temperature;
when the temperatures of the first electrodes are all higher than the preset temperature, the comparison unit transmits the comparison result to the central control unit, the central control unit transmits a first electric signal to the temperature control unit, and the heating module is kept in standby;
when at least one temperature in the temperatures of the plurality of first electrodes is lower than the preset temperature, the comparison unit transmits information of a sub-region where the first electrode is located corresponding to the at least one temperature to the central control unit, the central control unit transmits a second electric signal to the temperature control unit, the heating module works, and the temperature control unit controls the corresponding heating unit to heat.
7. The display device according to claim 6,
at intervals of T, the signal processing module acquires the temperatures of the plurality of first electrodes once; wherein T is more than or equal to 1min and less than or equal to 5 min.
8. The display device according to claim 7,
when the signal processing module detects that the temperature of the sub-area heated by the heating unit is greater than the preset temperature, the heating unit stops heating.
9. The display device according to claim 1,
the plurality of first electrodes are adhered to the first polarizer through adhesive materials.
10. The display device according to claim 1,
the display panel is a liquid crystal display panel, and the display device further comprises a backlight module;
the heating module is clamped between the liquid crystal display panel and the backlight module.
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| CN109377955B (en) * | 2018-11-23 | 2021-09-28 | 维沃移动通信有限公司 | Pixel circuit control method, display panel and terminal equipment |
| CN110109313A (en) * | 2019-05-30 | 2019-08-09 | 北京停简单信息技术有限公司 | Electronics paper matrix group, display device and banister all-in-one machine |
| CN110306466A (en) * | 2019-06-06 | 2019-10-08 | 北京停简单信息技术有限公司 | Banister all-in-one machine |
| CN112181028B (en) * | 2020-09-24 | 2022-04-12 | 合肥维信诺科技有限公司 | Display device |
| CN112859416B (en) * | 2021-03-12 | 2023-04-21 | 厦门天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN114624933B (en) * | 2022-03-22 | 2024-04-09 | 北京京东方显示技术有限公司 | Cholesteric liquid crystal screen control circuit and cholesteric liquid crystal screen |
| CN115167024B (en) | 2022-07-01 | 2023-10-17 | Tcl华星光电技术有限公司 | Liquid crystal display device and temperature control method thereof |
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