CN212364985U - Display device - Google Patents
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- CN212364985U CN212364985U CN202022048661.5U CN202022048661U CN212364985U CN 212364985 U CN212364985 U CN 212364985U CN 202022048661 U CN202022048661 U CN 202022048661U CN 212364985 U CN212364985 U CN 212364985U
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Abstract
A display device includes a display, a memory, at least one sensor and a processor. The display is used for displaying images. The memory is used to store the lookup table. The at least one sensor is used for providing at least one auxiliary information. The processor is coupled to the display, the memory and the at least one sensor, and is configured to obtain corresponding temperature information according to the lookup table and the at least one auxiliary information, and to adjust the display according to the temperature information. The present disclosure can dynamically adjust the display in real time to optimize the displayed image.
Description
Technical Field
The present disclosure relates to a display device.
Background
In the prior art, the display device performs settings such as gamma curve and color unevenness compensation before shipping, so as to optimize the picture quality of the image displayed by the display device. However, parameters such as gamma curve, brightness, color temperature, and contrast of an image change with temperature variation, and if adjustment is performed only once before shipment, adjustment of settings according to temperature variation cannot be performed.
In addition, in the prior art, a temperature sensor is disposed in a driving chip of a display, and the driving chip is not only at a high temperature during operation, but also easily affected by the temperature of surrounding backlight modules and other heating elements, so that the sensed temperature is not accurate, and a long sensing waiting time may be required, so that the display device cannot sense a more accurate ambient temperature in real time, and thus the display device is difficult to switch to an optimal setting in real time.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the present disclosure provides a display device including a display, a memory, at least one sensor, and a processor. The display is used for displaying images. The memory is used to store the lookup table. The at least one sensor is used for providing at least one auxiliary information. The processor is coupled to the display, the memory and the at least one sensor, and is configured to obtain corresponding temperature information according to the lookup table and the at least one auxiliary information, and to adjust the display according to the temperature information.
In some embodiments, the at least one sensor is disposed in a non-display area of the display.
In some embodiments, the processor is further configured to obtain the corresponding temperature information according to a weighted average of the at least one auxiliary information.
In some embodiments, the at least one auxiliary information includes a resistance value, a capacitance value, a threshold voltage value, a region information, a battery voltage information, or a combination thereof.
In another aspect of the present disclosure, a display device is provided, which includes a sensor and a processor. The sensor is used for acquiring auxiliary information. The processing gas is coupled with the sensor and used for obtaining a set of temperature information corresponding to a first set value of the temperature information according to the auxiliary information and adjusting an image displayed by the display according to a set value.
In some embodiments, the sensor is further configured to measure a resistance of a resistor adjacent to the display, and the processor is further configured to obtain the temperature information according to the resistance.
In some embodiments, the sensor is further configured to measure a capacitance of a capacitor adjacent to the display, and the processor is further configured to obtain the temperature information based on the capacitance.
In some embodiments, the sensor is further configured to measure a threshold voltage value of a transistor adjacent to the display, and the processor is further configured to obtain the temperature information according to the threshold voltage value of the transistor.
In some embodiments, the sensor is further configured to locate a region information of the display, and the processor is further configured to obtain the temperature information corresponding to the region information according to the region information and a lookup table.
In some embodiments, the geographic information includes a latitude information and an altitude information.
In some embodiments, the sensor is further configured to measure an output voltage of a battery adjacent to the display, and the processor is further configured to obtain the temperature information corresponding to the output voltage according to the output voltage and a look-up table.
In some embodiments, the sensor is further configured to sense acceleration information or speed information of the display, and when the processor receives and determines that the display is in a high-speed state according to the acceleration information or the speed information and the display is in an air-conditioned environment, obtain a second setting value corresponding to the air-conditioned environment through the processor, and adjust the image displayed by the display according to the second setting value.
Drawings
The foregoing and other objects, features, advantages and embodiments of the disclosure will be apparent from the following more particular description of the embodiments, as illustrated in the accompanying drawings in which:
FIG. 1 is a schematic diagram of a display device according to some embodiments of the present disclosure;
FIG. 2 is a schematic diagram of the sensor shown in FIG. 1 according to some embodiments of the present disclosure;
fig. 3 is a flowchart illustrating a display method according to some embodiments of the present disclosure.
In accordance with conventional practice, the various features and elements of the drawings are not drawn to scale in order to best illustrate the specific features and elements associated with the present disclosure. Moreover, the same or similar reference numbers are used throughout the different drawings to reference like elements/components.
[ notation ] to show
100 display device
110 display
120: memory
121 look-up table
130: sensor
140 processor
150 battery
S1 auxiliary information
S2 adjusting the signal
NDA non-display area
300 display method
S302, S304, S306, S308
Detailed Description
All terms used herein have their ordinary meaning. The definitions of the above-mentioned words in commonly used dictionaries, any use of the words discussed herein in the context of this specification is by way of example only and should not be construed as limiting the scope or meaning of the present disclosure. Similarly, the present disclosure is not limited to the various embodiments shown in this specification.
It will be understood that the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections. These elements, components, regions, layers and/or regions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present disclosure. As used herein, "and/or" includes any and all combinations of one or more of the associated items.
As used herein, the term "couple" or "connect" refers to two or more elements being in direct physical or electrical contact with each other, or in indirect physical or electrical contact with each other, or to the mutual operation or action of two or more elements.
Referring to fig. 1, fig. 1 is a schematic diagram of a display device 100 according to some embodiments of the present disclosure. As shown in FIG. 1, the display device 100 includes a display 110, a memory 120, a sensor 130, and a processor 140. In some embodiments, the processor 140 is coupled to the display 110, the memory 120 and the sensor 130, and the processor 140 is configured to calculate the temperature of the display 110 according to the auxiliary information S1 provided by the sensor 130 and the lookup table 121 stored in the memory 120, so as to adjust the image displayed on the display 110 to the set value corresponding to the temperature. In some embodiments, the processor 140 may adjust the display 110 by sending the adjustment signal S2 to the display 110, which is described in the following paragraphs.
The display device 100 may be a touch display device. The touch display device comprises a display, a touch unit, a sensor and a processor. In some embodiments, the touch unit is disposed in the display. The display, the sensor and the processor are coupled as described above.
In some embodiments, the display device 100 may be a mobile device such as a mobile phone, a tablet, a computer, a smart watch, a navigation device, etc., or a display device in a vehicle-mounted system, as long as the device can be used for displaying images, and is within the scope of the present disclosure.
In some embodiments, the memory 120 is used for storing a look-up table (look-up table)121 corresponding to an image displayed by the display 110. In some embodiments, the lookup table 121 contains data such as color temperature, contrast, color saturation, color unevenness compensation (Demura), gamma curve (gamma curve), etc. corresponding to the temperature information. For example, under the same temperature condition, the curve of correspondence between gray levels and brightness of the image displayed by the display 110 may be referred to as a gamma curve. However, under different temperature conditions, the corresponding relationship between the gray scale and the brightness is affected by the voltage division change caused by the resistance characteristic change of the driving chip in the display 110 and the liquid crystal molecule penetration change in the display 110. In other words, different brightness is reflected corresponding to different temperatures under the same gray scale. Therefore, in order to adapt the display 110 to different temperatures, the memory 120 can store a plurality of gamma curves corresponding to gray scales and brightness under different temperature conditions, so that the display 110 can adjust corresponding to different temperatures through the gamma curves stored in the memory 120.
It should be noted that, in addition to the gamma curve, parameters such as color temperature, contrast, color saturation, and uniform chromaticity (mura) of the display 110 may also change corresponding to different temperatures, and corresponding adjustment or compensation is required, so that the lookup table 121 corresponding to different temperatures and/or different parameter corresponding relationships may be stored in the memory 120 for the adjustment of the display 110, which is not limited to the above parameters.
In some embodiments, the sensor 130 is configured to provide at least one auxiliary information S1. In some embodiments, the auxiliary information S1 includes at least one of a resistance value, a capacitance value, a threshold voltage value, region information, or battery capacity information.
Please refer to fig. 1 and fig. 2 simultaneously. Fig. 2 is a schematic diagram illustrating the sensor 130 shown in fig. 1 according to some embodiments of the present disclosure. In some embodiments, a plurality of sensors 130 are disposed around the display 110. In some other embodiments, the plurality of sensors 130 are disposed in the non-display area NDA indicated by diagonal dots in the display 110.
In some embodiments, as shown in fig. 2, when eight positions, i.e., up, down, left, right, left-up, right-up, left-down, and right-down, of the display 110 are respectively provided with one sensor 130, the auxiliary information S1 corresponding to the eight different positions may be provided through the sensor 130. In some embodiments, the processor 140 may calculate the temperatures of the eight positions according to the auxiliary information S1, and then calculate the average value thereof as the temperature of the center position of the display 110. In other embodiments, the auxiliary information S1 can be converted into temperature information by the sensor 130, and it is within the scope of the present disclosure to calculate the temperature of the display 110 according to the sensed auxiliary information S1 by the cooperation between the sensor 130 and the processor 140.
In some embodiments, one or more sensors 130 may be disposed at any position around the display 110, and the auxiliary information S1 (e.g., resistance) provided by each sensor 130 or the temperature corresponding to the auxiliary information S1 is multiplied by a corresponding weight to calculate a weighted average thereof as the temperature of the center of the display 110. In other words, in other embodiments, the number and the arrangement positions of the sensors 130 are not limited to those shown in fig. 2.
In some embodiments, the sensors 130 may be resistive temperature sensors, which may include resistors made of silver, gold, aluminum, molybdenum, nickel, iron, tungsten, copper, platinum, zinc, Indium Tin Oxide (ITO), nano Silver (SNW), and other materials, but the present disclosure is not limited to these materials, as long as the materials change resistance values with the change of atomic or lattice motion states due to the temperature change, and the present disclosure is within the scope of the present disclosure. By arranging the element which can change the resistance value along with the temperature change, the current temperature can be calculated by measuring the resistance value. For example, when R0 is a resistance value at a temperature T0, R is a resistance value at a temperature T, and α is a temperature coefficient of the resistance, where R0, T0, α are known values, the current temperature T can be calculated by substituting the measured resistance R into a resistance value calculation formula R — R0[1+ α (T-T0) ].
In some embodiments, each sensor 130 provides the auxiliary information in the form of a resistance value by sensing the resistance value S1, and calculates the temperature at each position point by using a resistance value calculation formula, and then transmits the obtained temperature information to the processor 140, so as to calculate and obtain the central temperature of the display 110 through the processor 140. In some embodiments, the sensor 130 may transmit the auxiliary information S1 in the form of a resistance value to the processor 140, and the processor 140 calculates the temperature of each position point by using a resistance value calculation formula, thereby calculating the temperature of the display 110 (e.g., the center point temperature).
Please refer to fig. 1-2. In some embodiments, the redundant pixels (Dummy pixels) are disposed at the edge of the display area of the display 110 as shown in FIG. 2, and include at least one data line, at least one gate line, a plurality of transistors and a plurality of capacitors. In some embodiments, the redundant pixels are disposed in an area of the display 110 that is obscured by a bezel of the display device 100.
In some embodiments, the capacitor may be a storage capacitor in the pixel or a liquid crystal capacitor. In other embodiments, the capacitor can be a capacitor on a display and/or a touch unit of a touch panel coupled to a voltage source Vcom (not shown), and the disclosure is not limited to the above-mentioned arrangement of the capacitor.
In some embodiments, by utilizing the property that the dielectric constant of the capacitor varies with temperature, the capacitance of the capacitor at different temperatures can be measured by the sensor 130 to provide the auxiliary information S1 in the form of capacitance, and the processor 140 calculates the corresponding temperature value through a formula. For example, when ε is the dielectric constant of the dielectric between the capacitor plates, A is the plate area, and d is the distance between the plates, since ε varies with temperature, the capacitance value calculation formula C ═ ε A/d can be used to estimate the dielectric constant ε by capacitance value, and the temperature corresponding to the measured capacitance value can be obtained by using the relationship between ε and temperature stored in the memory 120.
In some embodiments, the display device 100 may include a plurality of sensors 130 for measuring capacitance values, the sensors 130 are configured to measure capacitance values of a plurality of capacitors located at different positions and obtain corresponding temperature values, and then the processor 140 directly averages or weights the temperature values to obtain a center temperature of the display 110, which is similar to the calculation of the sensing resistance value.
In some embodiments, the sensor 130 obtains the threshold voltage value Vth of the transistor as the auxiliary information. For example, when Id is the current passing through the transistor, Vgs is the voltage across the gate and source of the transistor, and k is a constant proportional to the channel width of the transistor and inversely proportional to the channel length of the transistor, the processor 140 may obtain the temperature value corresponding to the calculated threshold voltage value Vth by substituting the measured current Id and voltage Vgs into the current formula Id 1/2k (Vgs-Vth) ^2 to obtain the auxiliary information S1 expressed as the threshold voltage value Vth, and then using the temperature-temperature correspondence relationship of the threshold voltage value Vth stored in the memory 120.
In some embodiments, the display device 100 may include a plurality of sensors 130 for measuring and calculating the threshold voltage Vth, so as to measure the threshold voltage Vth of a plurality of transistors located at different positions and obtain corresponding temperature values, and then the processor 140 directly averages or weights the temperature to obtain the central temperature of the display 110.
In some embodiments, the sensor 130 may be configured to sense the region information as the auxiliary information S1, and then the processor 140 may obtain the corresponding temperature by using the correspondence relationship between the region information and the temperature matching time stored in the memory 120. In some embodiments, the geographic information includes latitude and longitude information and/or altitude information. For example, the memory 120 contains the average temperature of 28.3 degrees at 8 months, 14 days, and 7 nights in the taizhongshi city region in 10 years, and when the sensor senses the longitude and latitude information in the east region or corresponding to the east region at 8 months, 14 days, and 7 nights, the processor 140 may infer 28.3 degrees as the current temperature information according to the information in the memory 120.
In some embodiments, as shown in fig. 1, the display device 100 further comprises a battery 150, wherein the battery 150 is coupled to the sensor 130. The sensor 130 can be used for sensing the output voltage of the battery 150, and then the processor 140 can obtain the corresponding temperature by using the corresponding relationship between the output voltage and the temperature stored in the memory 120. In detail, since the actual output voltage of the battery varies with the ambient temperature (for example, a battery outputting 17 volts in a tropical region, and possibly outputting only 7 volts in a cold region), the processor 140 may obtain the temperature corresponding to the measured output voltage as the current temperature information according to the lookup table in the memory 120 because the lookup table may be pre-established and stored in the memory 120 by using the characteristic of the battery voltage varying with the temperature.
It should be noted that the sensor 130 is not limited to the auxiliary information S1 for measuring the resistance, capacitance, threshold voltage and region information, and any auxiliary information S1 that can be used for corresponding temperature information is within the scope of the present disclosure. In addition, the sensor 130 can be used to measure different types of auxiliary information S1 at the same time, and the disclosure is not limited to the above-mentioned arrangement positions, numbers and calculation methods.
In some embodiments, after the processor 140 adjusts the image displayed on the display 110 in the above manner, the sensor 130 is further configured to sense an acceleration or a speed of the display device 100 to determine a moving state of the display device 100. In some embodiments, when the display device 100 moves at a low speed (e.g., less than 10 km/h), the sensor 130 and/or the processor 140 may switch to a sleep state, where the processor 140 does not adjust the display.
In some embodiments, when the display device 100 moves at a high speed (e.g., greater than 10 km/h), the sensor 130 and/or the processor 140 do not switch to the sleep state, but maintain the above-mentioned set values, and the sensor 130 and the processor 140 perform the above-mentioned operations of sensing and estimating the temperature, so as to obtain the set values by using the lookup table 121 in the memory 120, thereby dynamically adjusting the image displayed on the display 110. Or the sensor 130 senses again and provides the auxiliary information S1, and the processor 140 obtains the corresponding temperature information that is the same as or different from the previous temperature information, and then adjusts the display 110 according to the temperature information, so that the image displayed on the display 110 can be adjusted to the set value at each temperature. In a further embodiment, the sensor 130 senses the signal again when the display device is disposed in an environment without air conditioning and at a high speed. In a further embodiment, when the display device is disposed in an air-conditioned and high-speed environment, the sensor 130 takes the temperature value set by the air conditioner for adjustment.
In summary, the display device 100 can provide the auxiliary information S1 including the resistance value, the capacitance value, the threshold voltage value, the region information and/or the battery voltage information through the one or more sensors 130 disposed around the display 110, so as to further calculate the temperature information of the environment where the display device 100 is located, and the processor 140 can adjust the display 110 according to the temperature information. In the above embodiment, the sensor 130 is less susceptible to the influence of the heat generated by the backlight device or the battery on the accuracy of the temperature calculation, and the operations of sensing, calculating and corresponding lookup table can be performed multiple times to dynamically and instantly adjust the display 110 according to different temperatures.
Fig. 3 is a flow chart of a display method 300 according to some embodiments of the present disclosure. The display method 300 is applied to a display device, and includes steps S302, S304, S306, and S308.
In step S302, the auxiliary information S1 is obtained by the sensor 130. In some embodiments, the auxiliary information S1 may be a resistance value, a capacitance value, a threshold voltage value, region information, battery voltage information, or a combination thereof.
In step S304, temperature information is acquired from the assist information S1. In some embodiments, the temperature information corresponding to the one or more auxiliary information S1 may be directly calculated by the sensor 130, or the temperature information corresponding to the one or more auxiliary information S1 may be obtained by the processor 140 according to the lookup table 121 stored in the memory 120. In some embodiments, the obtained plurality of temperature information may be directly averaged or weighted averaged as the temperature of the display 110.
In step S306, a first setting value corresponding to the temperature information is obtained by the processor 140. In some embodiments, the processor 140 obtains the first setting value according to a look-up table of the corresponding relationship between the temperature and the image adjustment parameter (e.g., color temperature, contrast, color saturation, Demura compensation, gamma curve, etc.) stored in the look-up table 121 of the memory 120.
In step 308, the processor 140 adjusts the image displayed by the display 110 according to the first setting. In some embodiments, the processor 140 generates and transmits an adjustment signal S2 to the display 110 according to the first setting value, so as to adjust the image displayed by the display 110. In some embodiments, the display 110 adjusts the color temperature, contrast, color saturation, Demura compensation, gamma curve, etc. of the displayed image according to the adjustment signal S2 to present the optimal state.
In some embodiments, the display method 300 measures a resistance value of a resistor adjacent to the display 110 through the sensor 130, and obtains corresponding temperature information of the display apparatus 100 according to the measured resistance value.
In some embodiments, the sensor 130 measures a capacitance of a capacitor adjacent to the display 110, and obtains corresponding temperature information of the display device 100 according to the measured capacitance and the lookup table 121 stored in the memory 120 and containing a corresponding relationship between the capacitance and the temperature information.
In some embodiments, the display method 300 measures and calculates the threshold voltage value of the transistor adjacent to the display 110 through the sensor 130, and obtains the corresponding temperature information of the display device 100 according to the calculated threshold voltage value and the look-up table 121 stored in the memory 120 and containing the corresponding relationship between the threshold voltage value and the temperature information.
In some embodiments, the display method 300 obtains the region information of the display device 100 through the sensor 130, and obtains the corresponding temperature information of the display device 100 according to the region information and the look-up table 121 stored in the memory 120 and containing the corresponding relationship between the region information and the temperature information. In some embodiments, the geographic information includes latitude and longitude information and/or altitude information.
In some embodiments, the display method 300 obtains the output voltage of the battery 150 in the display device 100 through the sensor 130, and obtains the corresponding temperature information of the display device 100 according to the output voltage and the look-up table 121 stored in the memory 120 and containing the corresponding relationship between the output voltage of the battery and the temperature information. In some embodiments, the geographic information includes latitude and longitude information and/or altitude information.
In some embodiments, the display method 300 further includes sensing an acceleration or a velocity of the display device 100 (or the display 110) through the sensor 130 disposed in the display device 100 to determine the moving state of the display device 100.
In some embodiments, the display method 300 further includes that when the display device 100 is in the high-speed state according to the acceleration information or the speed information measured by the sensor, and the display device 100 and the display 110 included therein are disposed in the environment without an air conditioning system, the sensor 130 performs steps S302 and S304 again, and obtains a second setting value through the processor 140 according to the lookup table of the corresponding relationship between the temperature and the image adjustment parameter (e.g., color temperature, contrast, color saturation, Demura compensation, gamma curve, etc.) in the lookup table 121 stored in the memory 120, wherein the second setting value is the same as or different from the first setting value. In the above embodiment, since there may be a large temperature change in the environment without the air conditioning system, the operations in the display method 300 may be performed many times to adjust the image displayed by the display device 100 in real time.
In some embodiments, the display method 300 further includes generating a new adjustment signal S2 according to the second setting by the processor 140, and transmitting the adjustment signal S2 to the display 110 to adjust the image displayed by the display 110.
In summary, the display device and the display method provided by the present disclosure are configured to sense auxiliary information corresponding to temperature information by disposing the sensor in an area of the display device where there is no interference of the element heat source, and obtain image adjustment curves or parameters corresponding to different temperature information by pre-storing a lookup table in the memory. By the arrangement mode, the display can be dynamically adjusted in real time to optimize the displayed image.
Although the present disclosure has been described with reference to particular embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the disclosure, and therefore, the scope of the disclosure is to be determined by the appended claims.
Claims (12)
1. A display device, comprising:
a display for displaying an image;
a memory for storing a lookup table;
at least one sensor for providing at least one auxiliary information; and
the processor is coupled to the display, the memory and the at least one sensor, and is configured to obtain corresponding temperature information according to the lookup table and the at least one auxiliary information, and to adjust the display according to the temperature information.
2. The display device according to claim 1, wherein the at least one sensor is disposed in a non-display area of the display.
3. The display device of claim 1, wherein the processor is further configured to obtain the corresponding temperature information according to a weighted average of the at least one auxiliary information.
4. The display device of claim 1, wherein the at least one auxiliary information comprises a resistance value, a capacitance value, a threshold voltage value, a region information, a battery voltage information, or a combination thereof.
5. A display device, comprising:
a display;
a sensor for obtaining an auxiliary information; and
the processor is coupled with the sensor and used for obtaining temperature information and a first set value corresponding to the temperature information according to the auxiliary information and adjusting an image displayed by the display according to the first set value.
6. The display device of claim 5, wherein the sensor is further configured to measure a resistance of a resistor adjacent to the display, and the processor is further configured to obtain the temperature information according to the resistance.
7. The display device of claim 5, wherein the sensor is further configured to measure a capacitance of a capacitor adjacent to the display, and the processor is further configured to obtain the temperature information according to the capacitance.
8. The display device of claim 5, wherein the sensor is further configured to measure a threshold voltage of a transistor adjacent to the display, and the processor is further configured to obtain the temperature information according to the threshold voltage of the transistor.
9. The display device as claimed in claim 5, wherein the sensor is further configured to locate a region information of the display, and the processor is further configured to obtain the temperature information corresponding to the region information according to the region information and a lookup table.
10. The display device as claimed in claim 9, wherein the geographical information includes a latitude information and an altitude information.
11. The display device according to claim 5, wherein the sensor is further configured to measure an output voltage of a battery adjacent to the display, and the processor is further configured to obtain the temperature information corresponding to the output voltage according to the output voltage and a look-up table.
12. The display device according to claim 9 or 11, wherein the sensor is further configured to sense acceleration information or speed information of the display, and when the processor receives and determines that the display is in a high-speed state according to the acceleration information or the speed information and the display is in an air-conditioned environment, the processor obtains a second setting value corresponding to the air-conditioned environment and adjusts the image displayed by the display according to the second setting value.
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| CN114281220A (en) * | 2020-09-18 | 2022-04-05 | 宸鸿科技(厦门)有限公司 | Display device and display method |
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