Display device

Abstract

The embodiment of the invention belongs to the display technology, and provides a display device which comprises a display panel, a temperature sensing unit and a control unit, and the display panel comprises a color film substrate, an array substrate, a liquid crystal layer and a sealing layer; the display panel is further provided with a driving electrode used for applying driving voltage to liquid crystal molecules in the liquid crystal layer. The temperature sensing unit is arranged on the display panel and is used for detecting temperature information of the display panel; the temperature sensing unit and the driving electrode are electrically connected with the control unit respectively; the control unit is provided with a plurality of different driving voltages, and the different driving voltages correspond to different overdrive tables; the control unit is configured to obtain temperature information measured by the temperature sensing unit; according to the temperature information, determining a corresponding driving voltage, so that the driving voltage of the liquid crystal molecules is increased when the temperature of the display panel is reduced; and controlling the driving electrode to apply driving voltage to the liquid crystal molecules. The problem of smear of the display equipment can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to display technology, and more particularly to a display device. Background Art

[0002] With the development of display technology, liquid crystal display (LCD) devices are increasingly used in people's work and life due to their advantages such as small size and low power consumption.

[0003] The liquid crystal display device includes a display panel, which has a color filter substrate, an array substrate, and a liquid crystal layer between the color filter substrate and the array substrate. When a driving voltage is applied to the liquid crystal layer, the liquid crystal molecules in the liquid crystal layer are twisted and produce a bright and dark image display effect. When the color filter substrate is added, a color image can be generated on the display panel. Among them, the response time of the liquid crystal molecules is an important factor affecting the liquid crystal display device. The response time of the liquid crystal molecules refers to the speed at which they react to the input signal, that is, the time it takes for the liquid crystal molecules to change from bright to dark or from dark to bright.

[0004] However, there is viscosity between liquid crystal molecules. When the temperature decreases, the viscosity between the liquid crystal molecules increases. Correspondingly, the response time of the liquid crystal molecules also increases, and the display device has ghosting and the display effect is poor. Summary of the invention

[0005] The embodiment of the present application provides a display device, which can improve the problem of ghosting of the display device and provide a better display effect.

[0006] An embodiment of the present application provides a display device, comprising:

[0007] A display panel, the display panel comprising a color film substrate, an array substrate, a liquid crystal layer and a sealing layer;

[0008] The liquid crystal layer and the sealing layer are both located between the color filter substrate and the array substrate, and the sealing layer is arranged around the outer side of the liquid crystal layer;

[0009] The display panel is also provided with a driving electrode for applying a driving voltage to the liquid crystal molecules in the liquid crystal layer;

[0010] A temperature sensing unit, the temperature sensing unit is disposed on the display panel, and the temperature sensing unit is used to detect temperature information of the display panel;

[0011] A control unit, the temperature sensing unit and the driving electrode are electrically connected to the control unit respectively;

[0012] The control unit is provided with a plurality of different driving voltages, and different driving voltages correspond to different overdrive tables; the control unit is configured as follows:

[0013] Acquiring temperature information measured by the temperature sensing unit;

[0014] Determining a corresponding driving voltage according to the temperature information, so that the driving voltage of the liquid crystal molecules increases when the temperature of the display panel decreases;

[0015] The driving electrodes are controlled to apply the driving voltage to the liquid crystal molecules.

[0016] In this way, the driving voltage of the liquid crystal molecules can be changed with temperature, that is, the driving voltage of the liquid crystal molecules can be reduced when the temperature rises, or increased when the temperature drops. In other words, even if the viscosity of the liquid crystal molecules increases when the temperature drops, the response time of the liquid crystal molecules can be reduced by a higher driving voltage, so as to improve the ghosting problem of the display device and achieve a better display effect.

[0017] In some embodiments of the present application, the temperature sensing unit has a switching temperature, and the switching between the temperature sensing unit and the control unit changes when the temperature reaches the switching temperature, which has high reliability.

[0018] In some embodiments of the present application, the temperature sensing unit includes a temperature sensing element, the temperature sensing element has a light-transmitting state and a light-shielding state, and the temperature sensing element is configured to switch between the light-transmitting state and the light-shielding state at an on-off temperature;

[0019] The photosensitive element is arranged on a side of the photosensitive element receiving end facing the color film substrate, the photosensitive element is electrically connected to the control unit, and the photosensitive element is configured to receive light and communicate with the control unit when the temperature sensing element is in a light-transmitting state.

[0020] In this way, the connection and disconnection between the photosensitive element and the control unit can be achieved by changing the state of the temperature sensing element, and the structure is relatively simple.

[0021] In some embodiments of the present application, when the temperature measured by the temperature sensing element is lower than the on-off temperature, the temperature sensing element is in a light-transmitting state; when the temperature measured by the temperature sensing element is higher than the on-off temperature, the temperature sensing element is in an opaque light-shielding state.

[0022] In some embodiments of the present application, the temperature sensing element is a thermosensitive gel layer; and / or the light sensing element is a light sensor. The temperature sensitive hydrogel has high temperature sensitivity and is easy to connect and disconnect the light sensing element and the control unit. The light sensor has low cost and is easy to obtain.

[0023] In some embodiments of the present application, the temperature sensing unit is embedded in the sealing layer.

[0024] In this way, the temperature sensing unit is integrated with the display panel, and the temperature measured by the temperature sensing unit has higher accuracy.

[0025] In some embodiments of the present application, the sealing layer defines a accommodating portion corresponding to the temperature sensing unit, the temperature sensing component is embedded in the accommodating portion, the photosensitive component closes the opening of the accommodating portion toward the color film substrate, and the projection area of ​​the temperature sensing component on the color film substrate is larger than the projection area of ​​the photosensitive component receiving end on the color film substrate, which is easy to assemble.

[0026] In some embodiments of the present application, the number of the temperature sensing units is less than the number of the overdrive tables.

[0027] In this way, the driving voltage can be adjusted within different temperature ranges through a relatively small number of temperature sensing units.

[0028] In some embodiments of the present application, the difference between the number of the temperature sensing units and the number of the overdrive tables is one.

[0029] In this way, higher test accuracy can be achieved with a smaller number of temperature sensing units.

[0030] In some embodiments of the present application, there are multiple temperature sensing units, and the multiple temperature sensing units are arranged at intervals along the circumference of the display panel; and the on and off temperatures of each temperature sensing unit are different.

[0031] In this way, the driving voltage can be adjusted within a larger temperature range, the temperature application range of the display device is higher, and the display effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0033] Figure 1 A schematic diagram of the structure of a display device according to some embodiments of the present application;

[0034] Figure 2 Another structural schematic diagram of a display device according to some embodiments of the present application;

[0035] Figure 3 This is a schematic diagram of the structure of a temperature sensing unit in some embodiments of the present application;

[0036] Figure 4 Another structural schematic diagram of a temperature sensing unit according to some embodiments of the present application;

[0037] Figure 5 This is a schematic diagram of the control principle structure of some embodiments of the present application;

[0038] Figure 6 This is another schematic diagram of the control principle structure of some embodiments of the present application.

[0039] Description of reference numerals:

[0040] 10- Display device;

[0041] 100-display panel;

[0042] 110-Color filter substrate;

[0043] 120-array substrate;

[0044] 130- liquid crystal layer;

[0045] 140- sealing layer;

[0046] 200-control unit;

[0047] 210- Mainboard;

[0048] 211-first chip;

[0049] 220-timing control board;

[0050] 221- second chip;

[0051] 230- source driver board;

[0052] 300-temperature sensing unit;

[0053] 310-temperature sensing element;

[0054] 320-photosensitive element;

[0055] 400 - driving electrode. DETAILED DESCRIPTION

[0056] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0057] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0058] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0059] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] In the related art, the viscosity of liquid crystal molecules changes with temperature, that is, when the temperature rises, the viscosity of liquid crystal molecules decreases, and the response time of liquid crystal molecules decreases. When the temperature decreases, the viscosity of liquid crystal molecules increases, and the response time of liquid crystal molecules increases. Then, if the liquid crystal molecules have a constant driving voltage at different temperatures, when the temperature rises, the driving voltage of the liquid crystal molecules is too large, and the display device has artifacts (shadows of different colors and lighter brightness). When the temperature decreases, the driving voltage of the liquid crystal molecules is too small, and the display device has ghosting (shadows of the same color and lighter brightness), and the display effect of the display device is poor.

[0064] In view of this, an embodiment of the present application provides a display device, in which a temperature sensing unit is provided, and a control unit is provided with a plurality of different driving voltages. Different driving voltages are selected by using the temperature information measured by the temperature sensing unit, so that the driving voltage of the liquid crystal molecules can be increased when the temperature drops, thereby improving the ghosting problem of the display device, and the driving voltage of the liquid crystal molecules can be reduced when the temperature rises, thereby improving the artifact problem of the display device, and the display effect of the display device is better.

[0065] Figure 1 This is a schematic diagram of the structure of a display device according to some embodiments of the present application. Figure 2 Another structural schematic diagram of a display device according to some embodiments of the present application. Figure 3 Schematic diagram of the structure of the temperature sensing unit of some embodiments of the present application. Figure 4 Another structural schematic diagram of the temperature sensing unit of some embodiments of the present application. Figure 5 This is a schematic diagram of the control principle structure of some embodiments of the present application. Figure 6 This is another schematic diagram of the control principle structure of some embodiments of the present application.

[0066] See also Figures 1 to 6 The present embodiment provides a display device 10. The display device 10 is a liquid crystal display device. The display device 10 includes a display panel 100. The display panel 100 is used to display image information such as text and images.

[0067] In some embodiments, the display panel 100 is a main component of the display device 10, and the display panel 100 includes a color filter (CF) substrate 110, an array substrate 120, and a liquid crystal layer 130, wherein the liquid crystal layer 130 is located between the color filter substrate 110 and the array substrate 120. The array substrate 120 is also called a thin film transistor substrate (TFT).

[0068] In some embodiments, the color filter substrate 110 includes a first glass plate body and an indium tin oxide layer, a color resin, etc. coated on the first glass plate body. The array substrate 120 includes a second glass plate body and a thin film transistor, etc. disposed on the second glass plate body. This embodiment does not further limit the structures of the color filter substrate 110 and the array substrate 120.

[0069] In some embodiments, the liquid crystal molecules in the liquid crystal layer 130 may be positive liquid crystals or negative liquid crystals, which is not limited in this embodiment.

[0070] In some embodiments, according to the different arrangements of liquid crystal molecules, the display device 10 can be an IPS (In-Plane Switching) display device, i.e., a hard screen display device, which has a wider viewing angle. The display device 10 can also be a VA (Vertical Alignment) display device, i.e., a soft screen display device, which has a higher contrast.

[0071] In some embodiments, the display panel 100 is further provided with a driving electrode 400 for applying a driving voltage to the liquid crystal molecules in the liquid crystal layer 130. The driving electrode 400 can be mounted on the color filter substrate 110 and the array substrate 120, that is, arranged on both sides of the liquid crystal layer 130, or the driving electrode 400 can be arranged on one side of the liquid crystal layer 130. This embodiment does not limit the structure of the driving electrode 400.

[0072] In some embodiments, taking the driving electrode 400 being disposed on the array substrate 120 as an example, the driving electrode 400 may include data lines and scan lines, and whether the driving voltage is applied to the liquid crystal molecules is controlled by whether the data lines and the scan lines are powered on or not.

[0073] In some embodiments, the display panel 100 is further provided with a sealing layer 140 . The sealing layer 140 is located between the color filter substrate 110 and the array substrate 120 . The sealing layer 140 is disposed around the outer side of the liquid crystal layer 130 .

[0074] In some embodiments, the sealing layer 140 may be made of a light shielding material to prevent light leakage at the edge of the display device 10. For example, the sealing layer 140 may be made of a black resin. In addition, by providing the sealing layer 140, the color filter substrate 110, the array substrate 120, and the liquid crystal layer 130 may be integrated into a modular whole for easy assembly.

[0075] In some embodiments, since the display panel 100 itself cannot emit light, in order for the display device 10 to display image information normally, the display device 10 also includes a backlight unit (not shown), the backlight unit is provided with multiple backlight sources, and the backlight unit and the color film substrate 110 are respectively arranged on both sides of the array substrate 120.

[0076] In some embodiments, the display device 10 is further provided with a back plate (not shown), and the back plate and the display unit are respectively arranged on both sides of the backlight unit to support the backlight unit and the display panel 100. The material of the back plate can be aluminum alloy, steel, etc. to provide effective support.

[0077] In some embodiments, the display device 10 further includes a temperature sensing unit 300 , which is disposed on the display panel 100 and is used to detect temperature information of the display panel 100 .

[0078] In some embodiments, the display device 10 further includes a control unit 200 , and the control unit 200 is used to control the operation of the display device 10 , such as controlling the switching of the display device 10 , screen switching, etc.

[0079] In some embodiments, the temperature sensing unit 300 and the driving electrode 400 are electrically connected to the control unit 200 respectively, so that the control unit 200 can obtain the current temperature information of the display panel 100 through the temperature sensing unit 300, and control whether to apply a driving voltage to the liquid crystal molecules through the driving electrode 400.

[0080] In some embodiments, the control unit 200 may include a main board 210 and a timing controller (TCON) 220 electrically connected to each other, and the timing controller 220 is electrically connected to the display panel 100 to control the color display, timing, etc. of the display panel 100. The timing controller 220 is electrically connected to the driving electrode 400 to control whether to apply a driving voltage to the liquid crystal molecules. The overdrive table may be built into the timing controller 220, and the overdrive table is provided with a grayscale value.

[0081] In some embodiments, depending on the driving voltage, the grayscale values ​​in different overdrive tables can be set as needed, for example, obtained through experiments. This embodiment does not limit the size of the grayscale value and the method for obtaining the grayscale value.

[0082] In some embodiments, based on the characteristic that the response speed of the liquid crystal molecules is proportional to the driving voltage, an overdrive voltage greater than the target grayscale value can be applied to the liquid crystal molecules through overdrive (OD) technology to accelerate the rotation of the liquid crystal molecules, so that the liquid crystal molecules reach the target grayscale at a faster speed, shortening the response time of the liquid crystal molecules, so that the display device 10 has a better display effect.

[0083] In some embodiments, the magnitude of the overdrive voltage can be obtained through an overdrive table, that is, an overdrive grayscale value is obtained by querying the overdrive table according to the grayscale value of the target state and the grayscale value of the current state, and the overdrive grayscale value corresponds to the overdrive voltage.

[0084] In some embodiments, the control unit 200 is provided with a plurality of different driving voltages, and different driving voltages correspond to different over-driving tables.

[0085] In some embodiments, the control unit 200 is configured to:

[0086] The temperature information measured by the temperature sensing unit 300 is obtained. That is, after the temperature sensing unit 300 obtains the temperature information of the display panel 100 , the temperature information may be converted into an electrical signal and transmitted to the control unit 200 .

[0087] According to the temperature information, the corresponding driving voltage is determined, that is, after the control unit 200 obtains the electrical signal, it selects the driving voltage corresponding to the electrical signal so that the driving voltage of the liquid crystal molecules increases when the temperature of the display panel 100 decreases; and controls the driving electrode 400 to apply the driving voltage to the liquid crystal molecules.

[0088] In this way, when the temperature measured by the temperature sensing unit 300 is low, the viscosity of the liquid crystal molecules increases. After the control unit 200 obtains the temperature information measured by the temperature sensing unit 300, it selects the over-drive table corresponding to the higher driving voltage. In this way, a larger driving voltage can be applied to the liquid crystal molecules through the driving electrode 400 to reduce the driving time of the liquid crystal molecules, thereby improving the ghosting problem of the display device 10.

[0089] When the temperature measured by the temperature sensing unit 300 is high, the viscosity of the liquid crystal molecules becomes smaller. After the control unit 200 obtains the temperature information measured by the temperature sensing unit 300, it selects the over-drive table corresponding to the smaller drive voltage. In this way, a smaller drive voltage can be applied to the liquid crystal molecules through the drive electrode 400 to avoid excessive drive voltage of the liquid crystal molecules, thereby improving the artifact problem of the display device 10.

[0090] That is to say, the display device 10 provided in this embodiment can change the driving voltage of the liquid crystal molecules according to the temperature, thereby improving the display effect of the display device 10 .

[0091] In some embodiments, the control unit 200 may further include a source driving board 230 , which is electrically connected between the display panel 100 and the timing control board 220 to realize signal transmission and conversion. This embodiment does not limit the composition of the control unit 200 .

[0092] In some embodiments, the temperature sensing unit 300 may include a temperature sensor, and the control unit 200 is electrically connected to the temperature sensor, so that the control unit 200 can obtain temperature information of the display panel 100 in real time.

[0093] In some embodiments, the temperature sensing unit 300 has an on-off temperature, and the on-off between the temperature sensing unit 300 and the control unit 200 changes when the temperature reaches the on-off temperature. The on-off between the temperature sensing unit 300 and the control unit 200 refers to the signal on-off. In this way, the temperature sensing unit 300 can exchange signals with the control unit 200 within a certain temperature range, that is, the control unit 200 and the temperature sensing unit 300 are in a signal connection state, while in other temperature ranges, there is no signal interaction between the temperature sensing unit 300 and the control unit 200, that is, the control unit 200 and the temperature sensing unit 300 are in a signal disconnection state. In other words, the temperature range of the display panel 100 can be determined by the on-off signal between the temperature sensing unit 300 and the control unit 200, and the reliability is high.

[0094] In some embodiments, the temperature sensing unit 300 includes a temperature sensing element 310, which has a light-transmitting state and a light-shielding state. When the temperature sensing element 310 is in the light-transmitting state, it allows light to pass through. When the temperature sensing element 310 is in the light-shielding state, the temperature sensing element 310 prevents light from passing through.

[0095] In some embodiments, the temperature sensing element 310 is configured to switch between a light-transmitting state and a light-shielding state at the on-off temperature. In some embodiments, when the temperature measured by the temperature sensing element 310 is lower than the on-off temperature, the temperature sensing element 310 is in a light-transmitting state, and when the temperature measured by the temperature sensing element 310 is higher than the on-off temperature, the temperature sensing element 310 is in an opaque light-shielding state. The temperature at which the temperature sensing element 310 switches between the light-transmitting state and the light-shielding state is the on-off temperature of the temperature sensing unit 300.

[0096] In some embodiments, the temperature sensing element 310 is a temperature-sensitive gel layer. The temperature-sensitive gel may be a temperature-sensitive hydrogel, a temperature-sensitive ion gel, etc. The base material of the temperature-sensitive gel may be poly (N-isopropylacrylamide) (PNIPAM), hydroxypropyl cellulose (HPC), polyvinyl alcohol (PVA), etc. The medium material of the temperature-sensitive gel may be water, an ionic liquid, etc.

[0097] Thermochromic hydrogel is a temperature-sensitive polymer material containing hydrophilic and hydrophobic functional groups. As the temperature changes, the solubility of the polymer material will change significantly within a smaller temperature range and undergo a reversible transformation between transparent and turbid states.

[0098] When the temperature is lower than the on-off temperature, the temperature sensitive gel is transparent, that is, the temperature sensing element 310 is in a light-transmitting state and light can pass through. When the temperature is higher than the on-off temperature, the temperature sensitive gel turns milky white, that is, the temperature sensing element 310 is in a light-shielding state and light can be prevented from passing through. In this way, the temperature sensing element 310 can be switched between the light-transmitting state and the light-shielding state.

[0099] In some embodiments, according to different ratios of the thermosensitive gel materials, the thermosensitive gel can switch between a light-transmitting state and a light-shielding state at different temperatures, so that the on-off temperature of the temperature sensing unit 300 can be changed as needed. This embodiment does not limit the material ratio of the thermosensitive gel.

[0100] In some embodiments, the temperature sensing unit 300 further includes a photosensitive member 320. In some embodiments, the photosensitive member 320 is a light sensor. The light sensor may be an infrared light sensor, an ultraviolet light sensor, or a sunlight sensor, which is not limited in this embodiment. The light sensor can capture light signals more sensitively and convert them into electrical signals, with high reliability, low cost, and easy assembly. The photosensitive member 320 may also be other electrical devices that convert light signals into electrical signals, which is not limited in this embodiment.

[0101] In some embodiments, the temperature sensing element 310 is arranged on the side of the receiving end of the photosensitive element 320 facing the color film substrate 110, that is, the temperature sensing element 310 is arranged between the color film substrate 110 and the photosensitive element 320, and the photosensitive element 320 is electrically connected to the control unit 200. The photosensitive element 320 is configured to receive light and communicate with the control unit 200 when the temperature sensing element 310 is in a light-transmitting state.

[0102] In some embodiments, when the temperature sensing element 310 is in a light-transmitting state, light can pass through the temperature sensing element 310, the photosensitive element 320 obtains a light signal and converts the light signal into an electrical signal, and the control unit 200 can obtain the electrical signal, that is, the control unit 200 and the photosensitive element 320 are in a signal connection state, and the control unit 200 can determine that it is within a certain on-off temperature range to select one of the over-drive tables corresponding to the corresponding driving voltage.

[0103] In some embodiments, when the temperature sensing element 310 is in a light-shielding state, light cannot pass through the temperature sensing element 310, the photosensitive element 320 cannot obtain light signals, and the control unit 200 cannot obtain electrical signals, and the control unit 200 and the photosensitive element 320 are in a signal disconnection state.

[0104] In some embodiments, the temperature sensing unit 300 is embedded in the sealing layer 140. In this way, the temperature sensing unit 300 can be integrated with the display panel 100 and assembled as a standardized module structure, with high assembly efficiency.

[0105] Moreover, the temperature sensing unit 300 and the liquid crystal layer 130 are both located between the color film substrate 110 and the array substrate 120. The temperature measured by the temperature sensing unit 300 is closer to the actual temperature of the liquid crystal layer 130, thereby avoiding a large error between the temperature measured by the temperature sensing unit 300 and the actual temperature of the liquid crystal molecules. The temperature measured by the temperature sensing unit 300 has a higher accuracy.

[0106] In some embodiments, the sealing layer 140 defines a receiving portion corresponding to the temperature sensing unit 300, the temperature sensing element 310 is embedded in the receiving portion, and the light sensing element 320 closes the opening of the receiving portion toward the color film substrate 110. The vertical extension size of the receiving portion along the display panel 100 is less than (e.g. Figure 3 and Figure 4 As shown) or equal to (not shown) the gap between the color filter substrate 110 and the array substrate 120. In this way, the temperature sensing unit 300 can be exposed at the opening position of the accommodating portion, and the temperature sensing unit 300 can obtain the light passing through the color filter substrate 110.

[0107] In some embodiments, the temperature-sensitive gel layer can be fixed on the color film substrate 110 by coating, pasting, etc. The plane shape of the temperature-sensitive hydrogel can be the same as the shape of the receiving opening, that is, the temperature-sensitive gel layer closes the receiving opening.

[0108] In some embodiments, the projection area of ​​the temperature sensing element 310 on the color film substrate 110 is larger than the projection area of ​​the receiving end of the photosensitive element 320 on the color film substrate 110. In this way, when the temperature sensing element 310 is in the light-shielding state, it can effectively block light, and when the temperature sensing element 310 is in the light-transmitting state, the photosensitive element 320 can receive light from all directions, so that the temperature sensing unit 300 can be effectively turned on and off.

[0109] In some embodiments, the display device 10 further includes a frame (not shown), which is disposed outside the peripheral edge of the back plate, and is connected to the back plate to jointly support components such as the display panel 100 and the backlight unit. The temperature sensing unit 300 is exposed outside the frame, that is, the temperature sensing unit 300 is not blocked at the back side of the frame to avoid the frame blocking light.

[0110] In some embodiments, the number of temperature sensing units 300 is less than the number of overdrive tables. In this way, the drive voltage can be adjusted with a smaller number of temperature sensing units 300, the streaking problem of the display device 10 can be improved, and the display effect of the display device 10 can be optimized.

[0111] In some embodiments, the difference between the number of temperature sensing units 300 and the number of overdrive tables may be multiple, for example, two, three or more.

[0112] In some embodiments, the light transmittance of the temperature sensing element 310 in the light-transmitting state can be set as needed, for example, the light transmittance of the temperature sensing element 310 in the light-transmitting state can be 90%. Then, according to the temperature linear response characteristics of the light transmittance of the thermosensitive gel, the light transmittance of the thermosensitive gel is lower when the temperature is lower, for example, the light transmittance can be 10%, 30%, etc., and the light transmittance of the thermosensitive gel is higher when the temperature is higher, for example, 60%, 90%, etc. In this way, a single temperature sensing unit 300 can detect multiple different temperature information, that is, under different temperature conditions, the light sensing element can receive light signals of different intensities, and determine different driving voltages through the light signals of different intensities.

[0113] In some embodiments, the difference between the number of temperature sensing units 300 and the number of overdrive tables is one. Exemplarily, when the number of temperature sensing units 300 is one, the number of overdrive tables is two. In this way, each temperature sensing unit 300 can correspond to a temperature range, the signal transmission is more accurate, the interference of cluttered signals during signal transmission is less, and the test accuracy of the temperature sensing unit 300 is higher.

[0114] In some embodiments, there are multiple temperature sensing units 300 , and the number of the temperature sensing units 300 may be two, three or more.

[0115] In this way, multiple temperature ranges can be divided by multiple temperature sensing units 300, and the driving voltage of the liquid crystal molecules can be changed within the multiple different temperature ranges. The sensitivity is high and the problem of excessive driving voltage or insufficient driving voltage can be avoided. The display effect of the display device 10 is better.

[0116] In some embodiments, a plurality of temperature sensing units 300 are disposed at intervals along the circumference of the display panel 100 .

[0117] In some embodiments, the display device 10 has a sky side, a ground side, a left side, a right side, and a front side and a rear side. The left side and the right side of the display device 10 refer to the left side and the right side of the user when the user faces one side of the display panel 100. Accordingly, the side of the display device 10 facing the user is the front side, the side of the display device 10 facing away from the user is the rear side, the upper side of the display device 10 is the sky side, and the lower side of the display device 10 is the ground side.

[0118] In some embodiments, the plurality of temperature sensing units 300 may be disposed on the same side of the display panel 100. For example, the plurality of temperature sensing units 300 are disposed on the bottom side of the display panel 100 (eg, Figure 2 as shown) or on the right.

[0119] In some embodiments, the plurality of temperature sensing units 300 may be disposed on different sides of the display panel 100 . For example, the plurality of temperature sensing units 300 may be disposed at two adjacent sides of any corner of the display panel 100 .

[0120] In some embodiments, the plurality of temperature sensing units 300 may also be disposed at different corners of the display panel 100. For example, the plurality of temperature sensing units 300 may be disposed at two opposite corners of the display panel 100 (eg, Figure 1 shown).

[0121] In some embodiments, the on-off temperatures of the temperature sensing units 300 are different. In this way, different overdrive tables can be selected in different temperature ranges, so that the driving voltage of the liquid crystal molecules changes according to the temperature, and the display effect of the display device 10 is better.

[0122] In some embodiments, taking the display device 10 having two temperature sensing units 300 as an example, the control unit 200 has three overdriving tables accordingly.

[0123] For ease of explanation, the two temperature sensing units 300 are called the first temperature sensing unit and the second temperature sensing unit. The on-off temperature of the first temperature sensing unit can be 15°C. When the temperature is lower than 15°C, the temperature sensing element of the first temperature sensing unit is in a light-transmitting state. When the temperature is higher than 15°C, the first temperature sensing unit is in a light-shielding state. The on-off temperature of the second temperature sensing unit can be 35°C. When the temperature is lower than 35°C, the temperature sensing element of the second temperature sensing unit is in a light-transmitting state. When the temperature is higher than 35°C, the temperature sensing element of the second temperature sensing unit is in a light-shielding state.

[0124] The three overdrive tables can be called the first overdrive table, the second overdrive table and the third overdrive table, wherein the first overdrive table corresponds to a temperature lower than 15°C, the second overdrive table corresponds to a temperature between 15°C and 35°C, and the third overdrive table corresponds to a temperature higher than 35°C.

[0125] Then, when the control unit 200 can simultaneously receive the temperature information of the first temperature sensing unit and the second temperature sensing unit, the control unit 200 can determine that the temperature is lower than 15°C at this time, and the control unit 200 determines the corresponding driving voltage, and drives the liquid crystal molecules to twist by the driving voltage, and the driving voltage corresponds to the first overdrive table. When the control unit 200 receives the temperature information measured by the second temperature sensing unit, but does not receive the temperature information measured by the first temperature sensing unit, the control unit 200 can determine that the temperature is between 15°C-35°C at this time, the control unit 200 determines the corresponding driving voltage, and drives the liquid crystal molecules to twist by the driving voltage, and the driving voltage corresponds to the second overdrive table. When the control unit 200 does not receive the temperature information of the first temperature sensing unit and the second temperature sensing unit, the control unit 200 can determine that the temperature is higher than 35°C at this time, and the control unit 200 determines the corresponding driving voltage, and drives the liquid crystal molecules to twist by the driving voltage, and the driving voltage corresponds to the third overdrive table.

[0126] In some embodiments, the display device 10 provided in this embodiment may have different control modes according to different temperature determination components.

[0127] In some embodiments, when the mainboard 210 is a temperature determination component, such as Figure 5 As shown, taking the example that both the photosensitive elements in the first temperature sensing unit and the second temperature sensing unit in the above embodiment can receive light, after the two photosensitive elements receive the light, the optical signal can be converted into an electrical signal, and the electrical signal is amplified by the source driving board 230, and then transmitted to the first chip 211 of the main board 210 through the timing control board 220 (the signal flow is shown by the dotted line). The first chip 211 determines that the temperature is lower than 15°C at this time, and transmits the electrical signal representing the temperature range to the second chip 221. The second chip 221 identifies the electrical signal representing the temperature range and determines the driving voltage, which corresponds to the above temperature range. The second chip 221 transmits the electrical signal representing the over-driving table corresponding to the driving voltage to the display panel 100 via the source driving board 230 (the signal flow is shown by the thick solid line), and applies the driving voltage to the liquid crystal molecules through the driving electrodes.

[0128] In some embodiments, when the timing control board 220 is a temperature determination component, such as Figure 6 As shown, taking the example that both the photosensitive elements in the first temperature sensing unit and the second temperature sensing unit in the above embodiment can receive light, after the two photosensitive elements receive the light, the optical signal can be converted into an electrical signal, and the electrical signal is amplified by the source driving board 230 and transmitted to the second chip 221 (the signal flow is shown by the dotted line). The second chip 221 determines that the temperature is lower than 15°C at this time and determines the driving voltage, which corresponds to the above temperature range. The second chip 221 transmits the electrical signal representing the over-drive table corresponding to the driving voltage to the display panel 100 via the source driving board 230 (the signal flow is shown by the thick solid line), and applies the driving voltage to the liquid crystal molecules through the driving electrodes.

[0129] In some embodiments, the magnitude of the on-off temperature of the temperature sensing unit 300 needs to take environmental factors into consideration, wherein the environmental factors include both natural environmental factors, such as the atmospheric temperature, and hardware environmental factors, such as the display device 10 .

[0130] In some embodiments, factors such as the heat generation of the display device 10 itself are taken into consideration. The display panel 100 has temperature differences at different locations. Therefore, the setting of the on-off temperature of the temperature sensing unit 300 needs to take into account its location on the display panel 100, that is, the difference between the on-off temperatures of the two temperature sensing units 300 should be greater than the temperature difference at the locations where the two temperature sensing units 300 are located. Exemplarily, when the temperature difference at the two opposite corners of the display panel 100 reaches 6°C, if the difference between the on-off temperatures of the two temperature sensing units 300 is less than 6°C, one of the temperature sensing units 300 will always be in a state higher than its on-off temperature.

[0131] In some embodiments, considering that the temperature at the edge of the display panel 100 is different from the temperature of the display area of ​​the display panel 100, there is a difference between the temperature measured by the temperature measuring unit and the actual temperature of the liquid crystal molecules. Then, the on and off temperature of the temperature sensing unit 300 needs to cover this part of the temperature difference to be close to the actual temperature of the liquid crystal molecules, thereby optimizing the test accuracy of the temperature sensing unit 300.

[0132] In some embodiments, the temperature of the display area of ​​the display panel 100 can be measured by an external temperature measuring device. For example, multiple temperature sensors are arranged at different positions of the display panel 100, and the control unit 200 is electrically connected to the temperature sensors and obtains temperature information measured by the multiple temperature sensors. In some embodiments, the temperature of the display area of ​​the display panel 100 can also be set by experience, which is not limited in this embodiment.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0134] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: The display device comprises: A display panel, the display panel comprising a color film substrate, an array substrate, a liquid crystal layer and a sealing layer; The liquid crystal layer and the sealing layer are both located between the color filter substrate and the array substrate, and the sealing layer is arranged around the outer side of the liquid crystal layer; The display panel is also provided with a driving electrode for applying a driving voltage to the liquid crystal molecules in the liquid crystal layer; A temperature sensing unit, the temperature sensing unit is disposed on the display panel, and the temperature sensing unit is used to detect temperature information of the display panel; A control unit, the temperature sensing unit and the driving electrode are electrically connected to the control unit respectively; The control unit is provided with a plurality of different driving voltages, and different driving voltages correspond to different overdrive tables; the control unit is configured as follows: Acquiring temperature information measured by the temperature sensing unit; Determining a corresponding driving voltage according to the temperature information, so that the driving voltage of the liquid crystal molecules increases when the temperature of the display panel decreases; The driving electrodes are controlled to apply the driving voltage to the liquid crystal molecules.

2. The display device according to claim 1, characterized in that The temperature sensing unit has a switching temperature, and the switching between the temperature sensing unit and the control unit changes when the temperature reaches the switching temperature.

3. The display device according to claim 2, characterized in that The temperature sensing unit comprises: A temperature sensing element, wherein the temperature sensing element has a light-transmitting state and a light-shielding state, and the temperature sensing element is configured to switch between the light-transmitting state and the light-shielding state at an on-off temperature; A photosensitive element, wherein the temperature sensing element is arranged on a side of the photosensitive element receiving end facing the color film substrate, and the photosensitive element is electrically connected to the control unit; The light sensing element is configured to receive light and communicate with the control unit when the temperature sensing element is in a light-transmitting state.

4. The display device according to claim 3, characterized in that When the temperature measured by the temperature sensing element is lower than the on-off temperature, the temperature sensing element is in a light-transmitting state; when the temperature measured by the temperature sensing element is higher than the on-off temperature, the temperature sensing element is in an opaque light-shielding state.

5. The display device according to claim 3, characterized in that The temperature sensing element is a temperature-sensitive gel layer; and / or the light sensing element is a light sensor.

6. The display device according to any one of claims 3 to 5, characterized in that: The temperature sensing unit is embedded in the sealing layer.

7. The display device according to claim 6, characterized in that The sealing layer defines a housing portion corresponding to the temperature sensing unit, the temperature sensing component is embedded in the housing portion, the photosensitive component closes the opening of the housing portion toward the color film substrate, and the projection area of ​​the temperature sensing component on the color film substrate is larger than the projection area of ​​the photosensitive component receiving end on the color film substrate.

8. The display device according to any one of claims 2 to 5, characterized in that: The number of the temperature sensing units is less than the number of the overdrive tables.

9. The display device according to claim 8, characterized in that The difference between the number of the temperature sensing units and the number of the overdrive tables is one.

10. The display device according to claim 9, characterized in that There are a plurality of temperature sensing units, and the plurality of temperature sensing units are arranged at intervals along the circumference of the display panel; Furthermore, the on-off temperatures of the temperature sensing units are different.

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