TWM607157U - Display device - Google Patents

Abstract

A display device includes a display, a memory, at least one sensor and a processor. The display is configured to display image. The memory is configured to store a loop-up table. The at least one sensor is configured to provide at least one auxiliary information. The processor is coupled to the display, the memory, and the at least one sensor, and is configured to receive a corresponding temperature information according to the loop-up table and the at least one auxiliary information, and is configured to adjust the display according to the temperature information.

Description

Display device

This case is related to a display device.

In the prior art, the display device will perform settings such as gamma curve and chromaticity unevenness compensation before leaving the factory to optimize the picture quality of the image displayed by the display device. However, the image's gamma curve, brightness, color temperature, contrast and other parameters will change with temperature changes. If only one-time adjustments are made before leaving the factory, the corresponding settings and adjustments cannot be made in response to temperature changes.

In addition, the prior art will additionally configure a temperature sensor in the driver chip of the display. In addition to the high temperature when the driver chip is operating, it is also susceptible to the temperature of surrounding backlight modules and other heating elements, making it sense The temperature obtained is not accurate, and a long waiting time for sensing may be required, which makes it impossible to sense a more accurate ambient temperature in real time, and it is difficult to switch the display device to an optimal setting in real time.

In order to solve the above-mentioned problems, the present disclosure provides a display device including a display, a memory, at least one sensor, and a processor. The display is used to display images. The memory is used to store the lookup table. At least one sensor is used to provide at least one auxiliary information. The processor is coupled to the display, the memory and at least one sensor. The processor is used for obtaining corresponding temperature information according to the look-up table and at least one auxiliary information, and for adjusting the display according to the temperature information.

Another aspect of the disclosure provides a display device including a sensor and a processor. The sensor is used to obtain auxiliary information. The processing gas is coupled to the sensor for obtaining a set of temperature information corresponding to a first setting value of the temperature information according to the auxiliary information, and adjusting an image displayed by the display according to a local setting value.

All words used in this article have their usual meanings. The definitions of the above-mentioned words in commonly used dictionaries, and the usage examples of any words discussed herein included in the content of this specification are only examples, and should not be limited to the scope and meaning of this disclosure. Similarly, the present disclosure is not limited to the various embodiments shown in this specification.

In this article, the terms first, second, third, etc., are used to describe various elements, components, regions, layers, and/or blocks. However, these elements, components, regions, layers and/or blocks should not be limited by these terms. These terms are only used to identify single elements, components, regions, layers and/or blocks. Therefore, in the following, a first element, component, region, layer and/or block may also be referred to as a second element, component, region, layer and/or block without departing from the original meaning of the present case. As used herein, "and/or" includes any one and all combinations of one or more associated items.

Regarding the "coupling" or "connection" used in this text, it can mean that two or more components make physical or electrical contact with each other directly, or make physical or electrical contact with each other indirectly, or can refer to two or more Interoperability or action of components.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a display device 100 according to some embodiments of the 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. The processor 140 is configured to use the auxiliary information S1 provided by the sensor 130 and the look-up table 121 stored in the memory 120. , pushing the temperature display 110 is calculated to adjust the image displayed on the display 110 to correspond to the temperature set value. In some embodiments, the processor 140 can adjust the display 110 by adjusting the signal S2 to the display 110. For the specific adjustment method, please refer to the following paragraphs.

The above-mentioned display device 100 may be a touch display device. The touch display device includes a display, a touch unit, a sensor, and a processor. In some embodiments, the touch unit is provided in the display. The coupling method of the display, the sensor and the processor is as described above.

In some embodiments, the display device 100 can 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 an in-vehicle system, as long as it is any device that can be used to display images, that is, in this disclosure Within the scope covered.

In some embodiments, the memory 120 is used to store a look-up table 121 corresponding to the image displayed on the display 110. In some embodiments, the look-up table 121 includes data such as color temperature, contrast, color saturation, chromaticity unevenness compensation (Demura), and gamma curve corresponding to the temperature information. For example, under the same temperature condition, the corresponding relationship curve between the gray scale and the brightness of the image displayed on the display 110 may be called a gamma curve. However, under different temperature conditions, changes in the partial voltage caused by changes in the resistance characteristics of the driving chip in the display 110 and changes in the permeability of liquid crystal molecules in the display 110 will affect the correspondence between grayscale and brightness. In other words, under the same gray scale, different brightness will be reflected when corresponding to different temperatures. Therefore, in order to adapt the display 110 to different temperatures, the memory 120 can store multiple sets of gamma curves corresponding to the gray scale and brightness under different temperature conditions, so that the display 110 can use the gamma curves stored in the memory 120. Make adjustments corresponding to different temperatures.

It should be noted that in addition to the aforementioned gamma curve, the color temperature, contrast, color saturation, mura and other parameters of the display 110 will also change when corresponding to different temperatures, and need to be adjusted or compensated accordingly. Therefore, the look-up table 121 corresponding to different temperatures and/or different parameter correspondences can be stored in the memory 120 for the display 110 to adjust, and the present disclosure is not limited to the above-mentioned parameters.

In some embodiments, the sensor 130 is used to provide at least one auxiliary information S1. In some embodiments, the auxiliary information S1 includes at least one of resistance value, capacitance value, threshold voltage value, geographic information, or battery capacity information.

Please refer to Figure 1 and Figure 2 at the same time. FIG. 2 is a schematic diagram of the sensor 130 shown in FIG. 1 according to some embodiments of the disclosure. In some embodiments, multiple sensors 130 are arranged around the display 110. In some other embodiments, the plurality of sensors 130 are arranged in the non-display area NDA marked with diagonal dots in the display 110.

In some embodiments, as shown in Figure 2, when a sensor 130 is provided at the top, bottom, left, right, top left, top right, bottom left, and bottom right of the display 110, one sensor 130 can be provided by The sensor 130 provides auxiliary information S1 corresponding to eight different positions. In some embodiments, the processor 140 may calculate the respective temperatures of the eight locations according to the above-mentioned auxiliary information S1, and then calculate the average value thereof as the temperature at the center of the display 110. In other embodiments, the auxiliary information S1 can also be converted into temperature information by the sensor 130, as long as the coordinated operation between the sensor 130 and the processor 140 is used to calculate the auxiliary information S1. The temperature operation mode of the display 110 is within the scope of this disclosure.

In some embodiments, one or more sensors 130 can be arranged at any position around the display 110, and the auxiliary information S1 (for example: resistance value) provided by each sensor 130 or the auxiliary information S1 corresponding to the above The temperature is multiplied by a corresponding weight to calculate its weighted average value, which is used as the temperature at the center of the display 110. In other words, in other embodiments, the number and location of the sensors 130 are not limited to those shown in FIG. 2.

In some embodiments, the plurality of sensors 130 may be resistance temperature sensors, which may include silver, gold, aluminum, molybdenum, nickel, iron, tungsten, copper, platinum, zinc, indium tin oxide (ITO) , Nanosilver (SNW) and other materials, the present disclosure is not limited to the above element materials, as long as it is a material that changes the resistance value due to the change of the atomic or lattice motion state as the temperature changes, all are disclosed in this disclosure Within the scope covered. By setting components that change the resistance value with temperature changes, the current temperature can be calculated by measuring the resistance value. For example, when R0 is the resistance value at temperature T0, R is the resistance value at temperature T, and α is the temperature coefficient of resistance, where R0, T0, and α are known values, the resistance R can be measured by Substitute the resistance value calculation formula R=R0[1+α(T-T0)] to calculate the current temperature T.

In some embodiments, each sensor 130 provides auxiliary information S1 in the form of resistance value by sensing the resistance value, and uses the resistance value calculation formula to calculate the respective temperature of each location point and then transmits the obtained temperature information To the processor 140 to calculate and obtain the center temperature of the display 110 by the processor 140. In some embodiments, the sensor 130 may send the auxiliary information S1 in the form of resistance value to the processor 140, and the processor 140 uses the resistance value calculation formula to calculate the temperature of each position point, and then calculates the display 110 temperature (for example: center point temperature).

Please also refer to Figures 1 and 2. In some embodiments, the dummy pixel is arranged at the edge of the display area of the display 110 as shown in FIG. 2 and includes 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 arranged in an area of the display 110 that is shielded by the frame of the display device 100.

In some embodiments, the capacitor can be a storage capacitor in a pixel or a liquid crystal capacitor. In other embodiments, the capacitor may be a capacitor on a display and/or a touch unit in a touch panel coupled to a voltage source Vcom (not shown in the figure), and the present disclosure is not limited to the above-mentioned configuration of the capacitor.

In some embodiments, using the characteristic that the permittivity of the capacitor changes with temperature, the capacitance value of the capacitor at different temperatures can be measured by the sensor 130 to provide auxiliary information S1 in the form of capacitance value. The processor 140 calculates the corresponding temperature value through a formula. For example, when ε is the dielectric constant of the medium between the capacitor plates, A is the area of the plates, and d is the distance between the plates, since ε will vary with temperature, the capacitance value calculation formula C= εA/d, the dielectric constant ε is derived from the capacitance value, and then the corresponding relationship between the dielectric constant ε stored in the memory 120 and the temperature is used to obtain the temperature corresponding to the measured capacitance value.

In some embodiments, the display device 100 may include a plurality of sensors 130 for measuring capacitance values. The sensors 130 are used to measure the capacitance values of a plurality of capacitors at different positions and obtain corresponding temperature values, and then The processor 140 performs direct average or weighted average of the temperature values to obtain the center temperature of the display 110. The calculation method is similar to the calculation method of the aforementioned sensed resistance value. To simplify the description, the description is omitted here.

In some embodiments, the sensor 130 uses the threshold voltage Vth of the transistor as 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 width of the transistor channel and inversely proportional to the length of the transistor channel, you can use The measured current Id and voltage Vgs are substituted into the current formula Id=1/2k(Vgs-Vth)^2 to obtain auxiliary information S1 represented by the threshold voltage value Vth, and the processor 140 reuses the threshold value stored in the memory 120 The correspondence relationship between the voltage value Vth and the temperature is obtained, and the temperature value corresponding to the calculated threshold voltage value Vth is obtained.

In some embodiments, the display device 100 may include a plurality of sensors 130 for measuring and calculating the threshold voltage value Vth, for measuring the threshold voltage value Vth of a plurality of transistors located at different positions and obtaining the corresponding temperature. Then, the processor 140 performs direct average or weighted average of the temperature to obtain the center temperature of the display 110. The calculation method is similar to the calculation method of the aforementioned sensing resistance value. For the sake of simplicity, the description is omitted here.

In some embodiments, the sensor 130 can be used to sense geographic information as the auxiliary information S1, and the processor 140 uses the corresponding relationship between the geographic information stored in the memory 120 and the temperature matching time to obtain the corresponding temperature. . In some embodiments, the geographic information includes latitude and longitude information and/or altitude information. For example, the memory 120 contains an average temperature of 28.3 degrees at 7pm on August 14th in Dongshi District, Taichung City in 10 years. When the sensor detects that it is located at 7pm on August 14th. When the area or the latitude and longitude information corresponding to the Dongshi area, the processor 140 can infer 28.3 degrees as the current temperature information based on the information in the memory 120.

In some embodiments, as shown in FIG. 1, the display device 100 further includes a battery 150, wherein the battery 150 is coupled to the sensor 130. The sensor 130 can be used to sense the output voltage of the battery 150, and the processor 140 can use the corresponding relationship between the output voltage and the temperature stored in the memory 120 to obtain the corresponding temperature. In detail, since the actual output voltage of the battery will change with the ambient temperature (for example, a battery that outputs 17 volts in tropical areas, and may only output 7 volts in cold regions), because the battery voltage changes with temperature characteristics can be pre-established and The look-up table is stored in the memory 120, and the processor 140 can obtain the temperature corresponding to the measured output voltage according to the look-up table in the memory 120 as the current temperature information.

It should be noted that the sensor 130 is not limited to measuring the above-mentioned auxiliary information S1 such as resistance value, capacitance value, threshold voltage, and geographic information. As long as the auxiliary information S1 can be used for corresponding temperature information, it is within the scope of this disclosure. . In addition, the sensor 130 can be used to measure different types of auxiliary information S1 at the same time, and the present disclosure is not limited to the above-mentioned setting position, quantity and calculation method.

In some embodiments, after the processor 140 adjusts the image displayed on the display 110 in the above manner, the sensor 130 is further used to sense the acceleration or speed of the display device 100 to determine the moving state of the display device 100 . In some embodiments, when the display device 100 is moving at a low speed (for example, less than 10 km/h), the sensor 130 and/or the processor 140 can switch to the sleep state, and the processor 140 no longer performs the display Adjustment.

In some embodiments, when the display device 100 is moving at a high speed (for example, greater than 10 km/h), the sensor 130 and/or the processor 140 will not switch to the sleep state, but maintain the aforementioned set value. The detector 130 and the processor 140 perform the above-mentioned operation of sensing and estimating the temperature, and then use the look-up table 121 in the memory 120 to obtain a set value to dynamically adjust the image displayed on the display 110. Or the sensor 130 can perform sensing again and provide the aforementioned auxiliary information S1, and after the processor 140 obtains the corresponding temperature information that is the same or different from the previous time, the display 110 is adjusted according to the temperature information so that the display 110 is The displayed image can be adjusted to the set value at each temperature. In a further embodiment, when the display device is installed in a high-speed environment without air conditioning, the sensor 130 will perform sensing again. In a further embodiment, when the display device is installed in a high-speed environment with an air conditioner, the sensor 130 uses the temperature value set by the air conditioner for adjustment.

In summary, the display device 100 can provide auxiliary information S1 including resistance value, capacitance value, threshold voltage value, geographic information, and/or battery voltage information through one or more sensors 130 disposed around the display 110 , To further calculate the temperature information of the environment where the display device 100 is located, so that the processor 140 can adjust the display 110 according to the temperature information. In the above-mentioned embodiment, the sensor 130 is less susceptible to the heating of the backlight element or the battery to affect the accuracy of temperature calculation. The above-mentioned sensing, calculation, and corresponding look-up table operations can also be performed multiple times to dynamically and instantly respond to different temperatures. The display 110 is adjusted.

FIG. 3 is a flowchart of a display method 300 according to some embodiments of the disclosure. The display method 300 is applicable to a display device, and includes step S302, step S304, step S306, and step S308.

In step S302, the auxiliary information S1 is obtained by the sensor 130. In some embodiments, the auxiliary information S1 may be resistance value, capacitance value, threshold voltage value, geographic information, battery voltage information, or a combination thereof.

In step S304, temperature information is obtained based on the auxiliary information S1. In some embodiments, the sensor 130 can directly calculate the temperature information corresponding to one or more auxiliary information S1, or the processor 140 can obtain the corresponding information according to the lookup table 121 stored in the memory 120. Temperature information in one or more auxiliary information S1. In some embodiments,... the obtained temperature information may be directly averaged or weighted averaged as the temperature of the display 110.

In step S306, a first set value corresponding to the aforementioned temperature information is obtained by the processor 140. In some embodiments, the processor 140 is based on the lookup table of the corresponding relationship between the temperature and the image adjustment parameters (for example: color temperature, contrast, color saturation, Demura compensation, gamma curve, etc.) stored in the lookup table 121 stored in the memory 120 To obtain the first set value.

In step 308, the processor 140 adjusts the image displayed by the display 110 according to the first set value. In some embodiments, the processor 140 generates and transmits the adjustment signal S2 to the display 110 according to the first setting value 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 best state.

In some embodiments, the display method 300 uses the sensor 130 to measure the resistance value of the resistance adjacent to the display 110, and obtain the corresponding temperature information of the display device 100 according to the measured resistance value.

In some embodiments, the sensor 130 measures the capacitance value of the capacitance adjacent to the display 110, and based on the measured capacitance value and a look-up table 121 containing the correspondence between the capacitance value and temperature information stored in the memory 120, Obtain the corresponding temperature information of the display device 100.

In some embodiments, the display method 300 measures and calculates the threshold voltage value of the transistor adjacent to the display 110 by the sensor 130, and includes the threshold voltage value and the threshold voltage value stored in the memory 120 according to the calculated threshold voltage value. The look-up table 121 of the temperature information correspondence relationship obtains the corresponding temperature information of the display device 100.

In some embodiments, the display method 300 obtains the geographic information of the display device 100 through the sensor 130, and obtains the display device based on the geographic information and the lookup table 121 stored in the memory 120 containing the correspondence between the geographic information and the temperature information. The corresponding temperature information of 100. 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 based on the output voltage and a look-up table stored in the memory 120 containing the correspondence between the battery’s output voltage and temperature information 121. Obtain corresponding temperature information of the display device 100. 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 the acceleration or speed of the display device 100 (or the display 110) by the sensor 130 provided in the display device 100 to determine the moving state of the display device 100.

In some embodiments, the display method 300 further includes when the display device 100 is in a high-speed state according to the acceleration information or speed information measured by the sensor, and the display device 100 and the display 110 included therein are set at When there is no air conditioning system, the sensor 130 can perform steps S302 and S304 again, and the processor 140 adjusts the parameters (such as color temperature, contrast, and image) according to the temperature and image in the lookup table 121 stored in the memory 120 (Color saturation, Demura compensation, gamma curve, etc.) corresponding relationship lookup table to obtain a second set value, wherein the second set value is the same or different from the first set value. In the above embodiment, since there may be a large temperature change in an environment without an air conditioning system, the operations in the display method 300 can be performed multiple 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 by the processor 140 according to the second setting value, 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 display method provided by the present disclosure, by arranging the sensor in an area of the display device that is relatively free from component heat source interference, can sense auxiliary information corresponding to temperature information, and by pre-existing The look-up table in the memory obtains image adjustment curves or parameters corresponding to different temperature information. With the above setting method, the monitor can be adjusted dynamically and in real time to optimize the image displayed.

Although this case has been disclosed as above in the implementation mode, it does not limit this case. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of this case. Therefore, the scope of protection of this case should be attached hereafter. The scope of the patent application shall prevail.

100: display device 110: display 120: memory 121: Lookup Table 130: Sensor 140: processor 150: battery S1: Supplementary information S2: adjust signal NDA: Non-display area 300: display method S302, S304, S306, S308: steps

In order to make the above and other objectives, features, advantages and embodiments of this disclosure more obvious and understandable, the description of the attached drawings is as follows: FIG. 1 is a schematic diagram of a display device according to some embodiments of the disclosure. FIG. 2 is a schematic diagram of the sensor shown in FIG. 1 according to some embodiments of the disclosure. FIG. 3 is a flowchart of a display method according to some embodiments of the disclosure. According to the usual working method, the various features and components in the figure are not drawn to scale. The drawing method is to present the specific features and components related to the case in the best way. In addition, between different drawings, the same or similar element symbols are used to refer to similar elements/components.

100: display device

110: display

120: memory

121: Lookup Table

130: Sensor

140: processor

150: battery

S1: Supplementary information

S2: adjust signal

Claims (12)

A display device including: 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 A processor is coupled to the display, the memory and the at least one sensor. The processor is used to obtain corresponding temperature information according to the look-up table and the at least one auxiliary information, and to adjust the temperature information according to the temperature information monitor. The display device according to claim 1, wherein the at least one sensor is disposed in a non-display area of the display. The display device according to claim 1, wherein the processor is further configured to obtain the corresponding temperature information according to a weighted average value of the at least one auxiliary information. The display device according to claim 1, wherein 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. A display device including: A display A sensor for obtaining auxiliary information; and A processor coupled to the sensor, the processor is used to obtain temperature information and a first setting value corresponding to the temperature information according to the auxiliary information, and adjust the display displayed by the display according to the first setting value An image. The display device according to claim 5, wherein the sensor is further used to measure the resistance value of a resistor adjacent to the display, and the processor is further used to obtain the temperature information according to the resistance value. The display device according to claim 5, wherein the sensor is further used to measure the capacitance value of a capacitor adjacent to the display, and the processor is further used to obtain the temperature information according to the capacitance value. The display device according to claim 5, wherein the sensor is further used to measure a threshold voltage value of a transistor adjacent to the display, and the processor is further used to obtain the temperature according to the threshold voltage value of the transistor News. The display device according to claim 5, wherein the sensor is further used to locate a piece of geographic information of the display, and the processor is further used to obtain the geographic information corresponding to the geographic information according to the geographic information and a lookup table. Temperature information. The display device according to claim 9, wherein the geographic information includes latitude and longitude information and altitude information. The display device according to claim 5, wherein the sensor is further used to measure an output voltage of a battery adjacent to the display, and the processor is further used to obtain the corresponding output voltage according to the output voltage and a look-up table The temperature information of the output voltage. The display device according to claim 9 or 11, wherein the sensor is further used for sensing an acceleration information or a velocity information of the display, when the processor receives and determines the display according to the acceleration information or the velocity information When the display is in a high-speed state and the display is in a non-air-conditioned environment, a second setting value corresponding to the non-air-conditioned environment is obtained by the processor, and the image displayed by the display is adjusted according to the second setting value .

Images