CN109377955B - Pixel circuit control method, display panel and terminal equipment - Google Patents
Pixel circuit control method, display panel and terminal equipment Download PDFInfo
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- CN109377955B CN109377955B CN201811408465.5A CN201811408465A CN109377955B CN 109377955 B CN109377955 B CN 109377955B CN 201811408465 A CN201811408465 A CN 201811408465A CN 109377955 B CN109377955 B CN 109377955B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention provides a pixel circuit control method, a display panel and a terminal device, relates to the technical field of communication, and aims to solve the problem that the power consumption is high in the display process of the conventional terminal device. The method is applied to a display panel which comprises at least one pixel circuit, each pixel circuit comprises a TFT and a capacitor connected with the TFT, and the method comprises the following steps: acquiring a capacitance value of a capacitor in a target pixel circuit, wherein the target pixel circuit is a pixel circuit in at least one pixel circuit; under the condition that the capacitance value is smaller than or equal to the capacitance threshold value, determining the temperature of a target area according to the capacitance value, wherein the target area is an area where a target pixel circuit is located on the display panel; the driving voltage of the TFT in the pixel circuit in the target region is adjusted according to the temperature. The method is applied to the scene of driving the pixel circuit to work.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a pixel circuit control method, a display panel and terminal equipment.
Background
With the rapid development of terminal technology, the application of terminal equipment is more and more extensive, and the performance requirements of users on the terminal equipment are higher and higher.
Currently, a thin film transistor-Liquid Crystal Display (TFT-LCD) is generally used as a Display panel in a terminal device. The TFT-LCD may include a plurality of pixel circuits each including a Thin Film Transistor (TFT). When the TFT-LCD displays a frame, the TFT-LCD may control a gate driving circuit to apply a first driving voltage (the first driving voltage is greater than or equal to an on-voltage of the TFT) to a gate of the TFT to turn on the TFT; when the TFT-LCD refreshes a frame, the TFT-LCD may control the gate driving circuit to apply a second driving voltage (the second driving voltage is greater than or equal to an off-voltage of the TFT) to the gate of the TFT to turn off the TFT.
However, since the voltage difference between the on voltage of the TFT and the off voltage of the TFT is generally large, the TFT-LCD in the terminal device may consume a large amount of power when operating, thereby causing a large power consumption during the display of the terminal device.
Disclosure of Invention
The embodiment of the invention provides a pixel circuit control method, a display panel and a terminal device, and aims to solve the problem of high power consumption in the display process of the conventional terminal device.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a pixel circuit control method, which is applied to a display panel, where the display panel includes at least one pixel circuit, and each pixel circuit includes a TFT and a capacitor connected to the TFT. The method comprises the following steps: acquiring a capacitance value of a capacitor in a target pixel circuit, wherein the target pixel circuit is a pixel circuit in at least one pixel circuit; under the condition that the capacitance value is smaller than or equal to a capacitance threshold value, determining the temperature of a target area according to the capacitance value, wherein the target area is an area where the target pixel circuit is located on the display panel; and adjusting a driving voltage of the TFT in the pixel circuit in the target region according to the temperature.
In a second aspect, embodiments of the present invention provide a display panel including at least one pixel circuit, each pixel circuit including a TFT and a capacitor connected to the TFT. The display panel further comprises an acquisition module, a determination module and an adjustment module. The device comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring a capacitance value of a capacitor in a target pixel circuit, and the target pixel circuit is a pixel circuit in at least one pixel circuit; the determining module is used for determining the temperature of a target area according to the capacitance value acquired by the acquiring module under the condition that the capacitance value is smaller than or equal to a capacitance threshold value, wherein the target area is an area where the target pixel circuit is located on the display panel; and the adjusting module is used for adjusting the driving voltage of the TFT in the pixel circuit in the target area according to the temperature determined by the determining module.
In a third aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes the display panel in the second aspect.
In the embodiment of the present invention, a capacitance value of a capacitor in a target pixel circuit on a display panel may be acquired, and in a case where the capacitance value is less than or equal to a capacitance threshold value, a temperature of a target region may be determined according to the capacitance value, and a driving voltage of a TFT in the pixel circuit in the target region may be adjusted according to the temperature. The target pixel circuit is a pixel circuit in at least one pixel circuit in the display panel, and the target area is an area where the target pixel circuit is located on the display panel. According to the scheme, the capacitance value of the capacitor in the pixel circuit on the display panel and the threshold voltage (including the turn-on voltage and the turn-off voltage) of the TFT in the pixel circuit change along with the change of the temperature of the area where the pixel circuit is located on the display panel, so that the temperature of the area where the pixel circuit is located can be determined according to the capacitance value of the capacitor in the pixel circuit, the driving voltage of the TFT is adaptively adjusted according to the temperature, the driving voltage is larger than or equal to the threshold voltage corresponding to the temperature, and the TFT works normally. When the display panel works, the temperature of the area of the pixel circuit on the display panel can be increased, and the threshold voltage of the TFT in the pixel circuit can be reduced, so that the TFT can be switched on or switched off by a lower driving voltage. Furthermore, when the display panel is applied to the terminal device, the electric quantity consumed by the terminal device can be reduced by reducing the electric quantity consumed by the display panel when the display panel works, so that the power consumption of the terminal device in the display process can be reduced.
Drawings
FIG. 1 is a graph showing I-V characteristics of a TFT according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a pixel circuit control method according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a pixel circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a capacitance value of a capacitor in a pixel circuit varying with temperature according to an embodiment of the invention;
fig. 5 is a characteristic curve diagram of capacitance variation and temperature of a capacitor according to an embodiment of the present invention;
FIG. 6 is a graph illustrating threshold voltage versus temperature characteristics of a TFT according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first threshold value and the second threshold value, etc. are used to distinguish different threshold values, rather than to describe a particular order of the threshold values.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of elements means two or more elements, and the like.
The following first explains each noun and/or term in the embodiment of the present invention.
Temperature drift phenomenon: which is a phenomenon in which parameters of a semiconductor device are changed due to a change in temperature.
In the embodiment of the invention, the temperature drift phenomenon refers to a phenomenon that the capacitance value of the capacitor changes due to temperature change.
Embodiments of the present invention provide a pixel circuit control method, a display panel, and a terminal device, which can obtain a capacitance value of a capacitor in a target pixel circuit on the display panel, determine a temperature of a target region according to the capacitance value when the capacitance value is less than or equal to a capacitance threshold value, and adjust a driving voltage of a TFT in the pixel circuit in the target region according to the temperature. The target pixel circuit is a pixel circuit in at least one pixel circuit in the display panel, and the target area is an area where the target pixel circuit is located on the display panel. According to the scheme, the capacitance value of the capacitor in the pixel circuit on the display panel and the threshold voltage (including the turn-on voltage and the turn-off voltage) of the TFT in the pixel circuit change along with the change of the temperature of the area where the pixel circuit is located on the display panel, so that the temperature of the area where the pixel circuit is located can be determined according to the capacitance value of the capacitor in the pixel circuit, the driving voltage of the TFT is adaptively adjusted according to the temperature, the driving voltage is larger than or equal to the threshold voltage corresponding to the temperature, and the TFT works normally. When the display panel works, the temperature of the area of the pixel circuit on the display panel can be increased, and the threshold voltage of the TFT in the pixel circuit can be reduced, so that the TFT can be switched on or switched off by a lower driving voltage. Furthermore, when the display panel is applied to the terminal device, the electric quantity consumed by the terminal device can be reduced by reducing the electric quantity consumed by the display panel when the display panel works, so that the power consumption of the terminal device in the display process can be reduced.
The display panel in the embodiment of the present invention may be a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.
The terminal equipment in the embodiment of the invention can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted terminal, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile terminal may be a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiment of the present invention is not particularly limited.
The execution main body of the pixel circuit control method provided by the embodiment of the present invention may be the display panel, the terminal device, or a hardware module and/or a hardware entity (for example, a chip or the like in the display panel or the terminal device that can implement the pixel circuit control method) that can implement the pixel circuit control method. The specific method can be determined according to actual use requirements, and the embodiment of the invention is not limited. The following takes a terminal device as an example to exemplarily explain a pixel circuit control method provided by the embodiment of the present invention.
As shown in fig. 1, a graph of I-V (current-voltage) characteristics of a TFT according to an embodiment of the present invention is provided. Where Ids in fig. 1 represents a drain-source current of the TFT, and Vds in fig. 1 represents a drain-source voltage of the TFT. In the embodiment of the invention, when the terminal device applies the driving voltage to the TFT in the pixel circuit on the display panel to make the TFT operate in the saturation region (i.e. the Ids value is substantially unchanged with the increase of the Vds value), the TFT is turned on, and the display panel can display a frame. When the terminal device applies a driving voltage to the TFT in the pixel circuit on the display panel so that the TFT operates in the off region (i.e., the Ids value is approximately 0), the TFT is turned off, and the display panel can refresh one frame (e.g., the next frame to be displayed). That is, the terminal device can control the TFT to be turned on or off by controlling the magnitude of the driving voltage applied to the TFT in the pixel circuit on the display panel, thereby controlling the display panel to display or refresh the picture.
As shown in fig. 2, an embodiment of the present invention provides a pixel circuit control method, which may be applied to the above-described display panel, and the display panel may include at least one pixel circuit, and each pixel circuit may include a TFT and a capacitor connected to the TFT. The display panel may be a display panel in the terminal device described above. The method may include S201-S204 described below.
S201, the terminal device obtains the capacitance value of the capacitor in the target pixel circuit.
The target pixel circuit may be a pixel circuit in at least one pixel circuit in the display panel. It is to be understood that the target pixel circuit may be one pixel circuit or a plurality of pixel circuits. For convenience of description, the target pixel circuit in the embodiment of the present invention refers to one pixel circuit. That is, in the embodiments of the present invention, an example of one pixel circuit (i.e., a target pixel circuit) in a display panel is taken as an example for illustration, and for other pixel circuits in the display panel, reference may be made to the description of the target pixel circuit in the embodiments of the present invention, which is not repeated herein.
In the embodiment of the present invention, since the capacitance value of the capacitor in the pixel circuit on the display panel changes with the change of the temperature of the area where the pixel circuit is located on the display panel, under the condition that the target pixel circuit operates, the terminal device may obtain the capacitance value of the capacitor in the target pixel circuit, so as to determine the temperature of the area where the target pixel circuit is located on the display panel (i.e., the following target area) according to the capacitance value.
It should be noted that, in the embodiment of the present invention, the target pixel circuit mentioned above operates, and may control, for the terminal device, on of a TFT in the target pixel circuit, so that the target pixel circuit displays content; alternatively, the TFT in the target pixel circuit may be controlled to be turned off for the terminal device to refresh the content of the target pixel circuit.
The specific description of the target area will be described in detail in S203, which is not repeated herein.
Optionally, in an embodiment of the present invention, a capacitance value of the capacitor in the target pixel circuit may be a sum of a capacitance value of a liquid crystal capacitor in the target pixel circuit and a capacitance value of a storage capacitor.
Optionally, in the embodiment of the present invention, the capacitor type of the capacitor in the target pixel circuit may be any possible capacitor type, such as a ceramic capacitor, a thin film capacitor, a tantalum electrolytic capacitor, and the like. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Exemplarily, as shown in fig. 3, a schematic structural diagram of a pixel circuit according to an embodiment of the present invention is provided. The pixel circuit block on the display panel may be composed of a plurality of pixel circuits. Each pixel circuit may include, among other things, a TFT31, a liquid crystal capacitor (which may be denoted as Clc)32, and a storage capacitor (which may be denoted as Cs) 33. In S201, the capacitance value of the capacitor in the target pixel circuit acquired by the terminal device is the sum of the capacitance value of the liquid crystal capacitor (i.e., Clc) and the capacitance value of the storage capacitor (i.e., Cs) in the target pixel circuit.
S202, the terminal equipment judges whether the capacitance value is smaller than or equal to the capacitance threshold value.
In the embodiment of the present invention, after the terminal device obtains the capacitance value of the capacitor in the target pixel circuit, the terminal device may determine whether the capacitance value is smaller than or equal to a preset capacitor threshold value in the terminal device, and if the capacitance value is smaller than or equal to the capacitor threshold value, the terminal device may continue to execute S203 described below; if the capacitance value is larger than the capacitance threshold value, the terminal device may continue to determine, through a calibration algorithm, whether the temperature rise of the target area is a cause that the capacitance value is larger than the capacitance threshold value. Specifically, if the terminal device determines that the temperature increase of the target region is a cause that the capacitance value is greater than the capacitance threshold value, the terminal device may adjust the capacitance value of the capacitor in the target pixel circuit to a capacitance reference value (i.e., an initial capacitance value of the capacitor) through a calibration algorithm to ensure that the capacitance value of the capacitor in the target pixel circuit is always less than or equal to a preset capacitance threshold value in the terminal device, so as to reduce an influence of a temperature drift phenomenon on the capacitance value of the capacitor in the target pixel circuit, and further ensure performance of the target pixel circuit.
In the embodiment of the present invention, the capacitance reference value may be an initial capacitance value of a capacitor preset in the terminal device. The capacitance reference value may be preset in the terminal device by the manufacturer of the terminal device. The capacitance reference value may be determined according to a material, a manufacturing process, and the like of the capacitor.
In the embodiment of the present invention, the capacitance threshold may be a preset value in the terminal device. The capacitance threshold may be preset in the terminal device by the manufacturer of the terminal device. The capacitance threshold may be a capacitance value of a capacitor in the pixel circuit (specifically, a minimum value of capacitance values of all capacitors in the plurality of pixel circuits) when the display panel reaches the temperature threshold when the display panel operates.
In the embodiment of the present invention, the temperature threshold may be a maximum temperature that the display panel can reach when the display panel normally works.
For example, assuming that the maximum temperature that the display panel can reach under the condition that the display panel normally operates is 55 ℃ (that is, the temperature threshold is 55 ℃), the capacitance threshold may be the minimum value among the capacitance values of the capacitors in the pixel circuits in the display panel when the display panel operates at 55 ℃.
Optionally, in the embodiment of the present invention, the calibration algorithm may be any possible calibration algorithm, such as an environment calibration algorithm. The method and the device can be determined according to actual use requirements, and the embodiment of the invention is not limited.
For example, assuming that the calibration algorithm is an environmental calibration algorithm, when the capacitance value of the capacitor in the target pixel circuit is greater than the capacitor threshold, the terminal device may continue to obtain the capacitance values of the capacitors in the target pixel circuit for multiple times, and determine whether the capacitance values are greater than or equal to a first threshold in the environmental calibration algorithm and less than or equal to a second threshold in the environmental calibration algorithm. If the capacitance values all satisfy the above conditions, the terminal device may determine that the temperature increase of the target region is a cause that the capacitance value of the capacitor in the target pixel circuit is greater than the capacitance threshold value, so that the terminal device may adjust the capacitance value of the capacitor in the target pixel circuit to the above capacitance reference value through the environment calibration algorithm.
For example, as shown in fig. 4, when a pixel circuit (e.g., the target pixel circuit) provided in an embodiment of the present invention operates, a capacitance value of a capacitor in the pixel circuit changes with a change in temperature of an area (e.g., the target area) where the pixel circuit is located on a display panel. Taking the area (i.e. the target area) where the target pixel circuit and the target pixel circuit are located on the display panel as an example, assuming that the capacitance reference value is C0, the capacitance threshold value is Cth, the first threshold value of the calibration algorithm is CDC-a, and the second threshold value of the calibration algorithm is CDC + a, then in the working process of the target pixel circuit, the temperature of the target area increases with the increase of the working time, the capacitance value of the capacitance in the target pixel circuit increases with the increase of the temperature, when the capacitance value of the capacitance in the target pixel circuit is greater than the capacitance threshold value Cth, the terminal device may continue to obtain the capacitance value of the capacitance in the target pixel circuit for multiple times, and if the capacitance values are all greater than or equal to CDC-a and less than or equal to CDC + a, the terminal device may determine that the temperature increase of the target area is the cause that the capacitance value of the capacitance in the target pixel circuit is greater than the capacitance threshold value Cth, the terminal device may thus adjust the capacitance value of the capacitance in the target pixel circuit to the capacitance reference value C0 by means of the calibration algorithm.
And S203, under the condition that the capacitance value is less than or equal to the capacitance threshold value, the terminal equipment determines the temperature of the target area according to the capacitance value.
The target area may be an area where the target pixel circuit is located on the display panel.
In the embodiment of the present invention, when the capacitance value of the capacitor in the target pixel circuit acquired by the terminal device is smaller than or equal to the capacitor threshold value, the terminal device may determine the temperature of the area where the target pixel circuit is located on the display panel (i.e., the target area) according to the capacitance value and by combining the relationship between the capacitance value of the capacitor in the pixel circuit and the temperature of the area where the pixel circuit is located on the display panel.
Optionally, because the pixel circuits on the display panel are all arranged in an array in a normal situation, the area of the target pixel circuit on the display panel in the embodiment of the present invention, that is, the target area may be the position of the target pixel circuit on the display panel, may also be the position of all the pixel circuits in the row (or column) where the target pixel circuit is located on the display panel, and may also be any possible position on the display panel, such as the position of several pixel circuits in the row (or column) where the target pixel circuit is located on the display panel, which are consecutive to the target pixel circuit. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Specifically, in the embodiment of the present invention, a relationship between a capacitance value of a capacitor in a pixel circuit and a temperature of an area of the pixel circuit on the display panel may be determined according to a dielectric material used for the capacitor in the pixel circuit. When the dielectric materials adopted by the capacitors in different pixel circuits are different, the relationship between the capacitance values of the capacitors in different pixel circuits and the temperature of the areas of the different pixel circuits on the display panel is different. In the embodiment of the present invention, in order to ensure the stability of the display panel, the dielectric materials used by the capacitors in each pixel circuit (including the target pixel circuit) in the display panel are the same, so that the relationship between the capacitance values of the capacitors in the pixel circuits and the temperature of the area of the pixel circuits on the display panel is the same.
Optionally, in the embodiment of the present invention, a relationship between a capacitance value of a capacitor in one pixel circuit and a temperature of an area of the pixel circuit on the display panel may be: the capacitance of the capacitor in a pixel circuit may increase as the temperature of the area of the pixel circuit on the display panel increases. Then, the relationship between the capacitance value of the capacitor in the target pixel circuit and the temperature of the area on the display panel where the target pixel circuit is located may be: the capacitance of the capacitor in the target pixel circuit may increase as the temperature of the area of the target pixel circuit on the display panel increases.
For example, as shown in fig. 5, a characteristic curve diagram of a variation of a capacitance value of a capacitor in a pixel circuit (e.g., the target pixel circuit) according to an embodiment of the present invention and a temperature of an area (e.g., the target area) where the pixel circuit is located on a display panel is provided. In fig. 5, the capacitance value C of the capacitor in the pixel circuit increases as the temperature T of the area of the pixel circuit on the display panel increases.
In the embodiment of the present invention, since the terminal device may determine the relationship between the capacitance value of the capacitor in the target pixel circuit and the temperature of the region where the target pixel circuit is located on the display panel (i.e., the target region), when the terminal device obtains the capacitance value of the capacitor in the target pixel circuit, the terminal device may determine the temperature of the target region according to the capacitance value and by combining the relationship. Then, the terminal device can adjust the driving voltage of the TFT in each pixel circuit in the target area according to the temperature, so that the driving voltage applied by the terminal device to the TFT in each pixel circuit in the target area is more reasonable.
And S204, the terminal equipment adjusts the driving voltage of the TFT in the pixel circuit in the target area according to the temperature.
In the embodiment of the invention, when the driving voltage applied to the TFT of the target pixel circuit by the terminal equipment is greater than or equal to the turn-on voltage of the TFT of the target pixel circuit, the terminal equipment can control the turn-on of the TFT in the target pixel circuit; when the driving voltage applied to the TFT of the target pixel circuit by the terminal device is greater than or equal to the off-voltage of the TFT of the target pixel circuit, the terminal device may control the TFT in the target pixel circuit to be off. However, since the on-voltage or the off-voltage of the TFT in the target pixel circuit may vary with the temperature of the target region, the terminal device may determine a threshold voltage corresponding to the temperature (hereinafter, referred to as a target threshold voltage, which may be a threshold voltage of the TFT in the target pixel circuit at the temperature) according to the temperature of the target region, adjust the driving voltage of the TFT in each pixel circuit in the target region according to the target threshold voltage, and thereby control the TFT to be turned on or off. Here, the threshold voltage of the TFT in the target pixel circuit may be an on voltage or an off voltage of the TFT.
It should be noted that, in the embodiment of the present invention, when the display panel operates, the pixel circuits are usually driven to operate by taking units (for example, a row of pixel circuits or a column of pixel circuits), that is, the driving voltage corresponding to each unit is the same driving voltage, and therefore, in the embodiment of the present invention, the driving voltage of the pixel circuits can be adjusted by taking the units as units. Specifically, taking a target pixel circuit and a target area (that is, an area where the target pixel circuit is located on the display panel, and the target pixel circuit is one pixel circuit in the target area) as an example, a temperature determined according to a capacitance value of a capacitor in the target pixel circuit may be used as a temperature of the target area, and a driving voltage of a TFT in each pixel circuit in the target area may be adjusted according to the temperature, so that the driving voltage of each pixel circuit on the display panel may be adjusted by using the unit as a unit.
It is understood that, in the embodiment of the present invention, the driving voltage may be a voltage applied by the terminal device to the TFT in each pixel circuit in the target area, and the driving voltage may control the TFT to be turned on or off. Wherein the driving voltage may be greater than or equal to a threshold voltage of the TFT.
Optionally, in this embodiment of the present invention, when the temperature of the target area is constant, the terminal device may determine the driving voltage of the TFT in each pixel circuit in the target area according to a target threshold voltage corresponding to the temperature (i.e., at the temperature, the threshold voltage of the TFT in the target pixel circuit). That is, the terminal device can determine that the drive voltage of the TFT in each pixel circuit in the target region is greater than or equal to the target threshold voltage. Therefore, the TFTs in all the pixel circuits in the target area can be ensured to work normally.
Optionally, in the embodiment of the present invention, a relationship between a threshold voltage of a TFT in one pixel circuit and a temperature of an area where the pixel circuit is located on the display panel may be: the threshold voltage of the TFT in one pixel circuit may be decreased as the temperature of the area where the pixel circuit is located on the display panel increases. Wherein a threshold voltage of the TFT in the pixel circuit may be an on voltage of the TFT in the pixel circuit or an off voltage of the TFT in the pixel circuit, and a driving voltage of the TFT in the pixel circuit may be greater than or equal to the threshold voltage of the TFT in the pixel circuit.
Specifically, taking a target pixel circuit and a target area (i.e. an area where the target pixel circuit is located on the display panel) as an example, the relationship between the threshold voltage of the TFT in the target pixel circuit and the temperature of the target area may be: the threshold voltage of the TFT in the target pixel circuit may be decreased as the temperature of the target area increases. And the threshold voltage of the TFT in the target pixel circuit may be an on voltage of the TFT in the target pixel circuit or an off voltage of the TFT in the target pixel circuit, and the driving voltage of the TFT in the target pixel circuit may be greater than or equal to the threshold voltage of the TFT in the target pixel circuit.
For example, as shown in fig. 6, a characteristic graph of a threshold voltage of a TFT in a pixel circuit (e.g., the target pixel circuit) provided by an embodiment of the present invention and a temperature of an area (e.g., the target area) where the pixel circuit is located on a display panel is shown. In fig. 6, the threshold voltage Vth of the TFT in the pixel circuit decreases as the temperature T of the region of the pixel circuit on the display panel increases.
Note that, the temperature T shown in fig. 6 is a kelvin temperature, and a conversion relationship between the kelvin temperature and the celsius degree is: t +273.15, where T is the temperature in degrees celsius.
Optionally, in the embodiment of the present invention, a relationship between the threshold voltage of the TFT in the pixel circuit and the temperature of the area of the pixel circuit on the display panel may be determined according to any one or a combination of a plurality of influencing factors, such as a material and a manufacturing process of the TFT in the pixel circuit. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
Optionally, in the embodiment of the present invention, the step S204 may be specifically implemented by the step S204a described below.
And S204a, the terminal equipment adjusts the driving voltage corresponding to the target driving signal according to the temperature of the target area.
The target drive signal may be used to drive TFTs in each pixel circuit in the target region.
In the embodiment of the present invention, the terminal device may control the on or off of the TFT in each pixel circuit in the target region by adjusting the driving voltage corresponding to the target driving signal. When the terminal device determines the temperature of the target area, the terminal device may determine a target threshold voltage corresponding to the temperature of the target area according to the temperature of the target area, and then the terminal device may adjust the driving voltage corresponding to the target driving signal according to the target threshold voltage. The target drive signal may be used to drive the TFTs in the respective pixel circuits in the target region on or off, among others.
Optionally, in this embodiment of the present invention, the target driving signal may be a driving signal output by the terminal device through the target driving circuit, and a voltage of the target driving signal may be a driving voltage. The terminal device can thus apply the drive voltage to the TFTs in the respective pixel circuits in the target region by the target drive signal, thereby controlling the TFTs to be turned on or off.
Optionally, in this embodiment of the present invention, the target driving signal may drive the pixel circuit to operate in units of cells. One unit may be one pixel circuit on the display panel, or may be all pixel circuits in a row (or a column) on the display panel, or may be several consecutive pixel circuits in a row (or a column) on the display panel. In this way, one driving signal may be used to drive one pixel circuit on the display panel, may be used to drive all pixel circuits in one row (or one column) on the display panel, and may be used to drive several consecutive pixel circuits in one row (or one column) on the display panel. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
In the embodiment of the invention, the terminal device can determine the target threshold voltage corresponding to the temperature of the target area by determining the temperature of the target area and combining the relationship between the temperature of the target area and the target threshold voltage. After determining the target threshold voltage, the terminal device may adjust a driving voltage corresponding to the target driving signal according to the target threshold voltage. When the TFT works, the temperature of the target area may rise, and the threshold voltage of the TFT is reduced along with the rise of the temperature of the target area, so that the terminal equipment can adaptively reduce the driving voltage corresponding to the target driving signal (it can be understood that the TFT can still be ensured to normally work after the driving voltage is reduced), thereby reducing the electric quantity consumed when the TFT works, reducing the electric quantity consumed when the pixel circuit where the TFT is located works, and further reducing the electric quantity consumed when the display panel works.
Optionally, in the embodiment of the present invention, the step S204a may be specifically implemented by the following steps S204a1 and S204a 2.
S204a1, the terminal device determines a target temperature range in which the temperature is located according to the temperature of the target area.
And S204a2, the terminal equipment adjusts the driving voltage corresponding to the target driving signal according to the target threshold voltage corresponding to the target temperature range.
In the embodiment of the present invention, after the terminal device determines the temperature of the target area, the terminal device may determine the temperature range (i.e., the target temperature range) where the temperature is located according to the temperature, so as to determine the target threshold voltage corresponding to the target temperature range through the target temperature range, and then may adjust the driving voltage corresponding to the target driving signal according to the target threshold voltage.
Optionally, in the embodiment of the present invention, the terminal device may include a corresponding relationship between a plurality of temperature ranges and a plurality of threshold voltages. One of the plurality of corresponding relationships may be a corresponding relationship between a temperature range and a threshold voltage. The plurality of relationships may include a target correspondence relationship, and the target correspondence relationship may be a correspondence relationship between the target temperature range and the target threshold voltage.
In this embodiment of the present invention, after the terminal device determines the target temperature range in which the temperature of the target area is located, the terminal device may determine the target threshold voltage corresponding to the target temperature range according to the target correspondence (i.e., the correspondence between the target temperature range and the target threshold voltage), and then the terminal device may adjust the driving voltage corresponding to the target driving signal according to the target threshold voltage.
Optionally, in this embodiment of the present invention, the correspondence between the plurality of temperature ranges and the plurality of threshold voltages may be a correspondence preset in the terminal device. The plurality of correspondence relationships may be preset in the terminal device by a manufacturer of the terminal device. The plurality of correspondences may be determined according to influence factors such as a material of the TFT in the pixel circuit on the display panel, a manufacturing process, and the like.
Optionally, in this embodiment of the present invention, in the plurality of corresponding relationships, the threshold voltage corresponding to each temperature range may be a maximum value of threshold voltages of TFTs in the pixel circuit at respective temperatures in the temperature range. That is, the target threshold voltage corresponding to the target temperature range may be the maximum value among the threshold voltages of the TFTs in the target pixel circuit at the respective temperatures within the target temperature range.
In the embodiment of the invention, because the threshold voltage of the TFT in the pixel circuit changes with the temperature change of the area of the pixel circuit on the display panel, the terminal device uses the maximum value of the threshold voltages of the TFT in the pixel circuit in a temperature range as the threshold voltage corresponding to the temperature range, so that after the terminal device adjusts the driving voltage of the TFT in the pixel circuit according to the threshold voltage, the TFT in the pixel circuit can still be ensured to normally operate at any temperature in the temperature range.
In the embodiment of the present invention, in conjunction with fig. 6, the threshold voltage of the TFT in the pixel circuit decreases with the increase of the temperature of the area where the pixel circuit is located on the display panel, so that for different temperature ranges, the greater the temperature in one temperature range, the smaller the threshold voltage corresponding to the temperature range.
For example, in the embodiment of the present invention, two temperature ranges, i.e., a temperature range 1 and a temperature range 2, are assumed. Wherein, the temperature range 1 is [36 ℃, 40 ℃ C ], the temperature range 2 is [41 ℃, 45 ℃ C ], the threshold voltage corresponding to the temperature range 1 is 11V, and the threshold voltage corresponding to the temperature range 2 is 10V. Then, when the terminal device determines that the temperature of the target area is 39 ℃, the terminal device may determine that 39 ℃ belongs to the temperature range 1, and then the terminal device may determine that the threshold voltage corresponding to the temperature range 1 is 11V according to the corresponding relationship between the temperature range and the threshold voltage, so that the terminal device may adjust the driving voltage corresponding to the target driving signal according to the threshold voltage, so that the adjusted driving voltage is greater than or equal to 11V, thereby ensuring that the TFTs in each pixel circuit driven by the target driving signal can still normally operate after the driving voltage is adjusted. That is, in the embodiments of the present invention, under the condition that the normal operation of the TFT in the pixel circuit is not affected, the driving voltage for driving the TFT to operate is reduced to reduce the electric quantity consumed when the TFT operates, and the electric quantity consumed when the pixel circuit where the TFT is located operates is reduced, so as to reduce the electric quantity consumed when the display panel (or the terminal device) where the pixel circuit is located operates.
In the embodiment of the present invention, the terminal device may determine the temperature of the target area, determine the target temperature range in which the temperature of the target area is located, and then determine the target threshold voltage corresponding to the target temperature range according to the target temperature range and the corresponding relationship between the temperature range and the threshold voltage, so as to adjust the driving voltage corresponding to the target driving signal according to the target threshold voltage. Because the temperature of the target area may be increased when the TFT operates, the terminal device may adaptively decrease the driving voltage corresponding to the target driving signal according to the corresponding relationship between the target temperature range where the temperature of the target area is located and the target threshold voltage, so as to decrease the electric quantity consumed when the TFT operates, decrease the electric quantity consumed when the pixel circuit where the TFT is located operates, and decrease the electric quantity consumed when the display panel where the TFT is located operates.
Embodiments of the present invention provide a pixel circuit control method, which may be applied to a display panel, where the display panel may include at least one pixel circuit. Because the capacitance value of the capacitor in the pixel circuit on the display panel and the threshold voltage (including the turn-on voltage and the turn-off voltage) of the TFT in the pixel circuit change along with the temperature change of the area of the pixel circuit on the display panel, the temperature of the area of the pixel circuit can be determined according to the capacitance value of the capacitor in the pixel circuit, and the driving voltage of the TFT is adaptively adjusted according to the temperature, so that the driving voltage is greater than or equal to the threshold voltage corresponding to the temperature, and the TFT works normally. When the display panel works, the temperature of the area of the pixel circuit on the display panel can be increased, and the threshold voltage of the TFT in the pixel circuit can be reduced, so that the TFT can be switched on or switched off by a lower driving voltage. Furthermore, when the display panel is applied to the terminal device, the electric quantity consumed by the terminal device can be reduced by reducing the electric quantity consumed by the display panel when the display panel works, so that the power consumption of the terminal device in the display process can be reduced.
As shown in fig. 7, an embodiment of the present invention provides a display panel 700, where the display panel 700 includes at least one pixel circuit, and each pixel circuit includes a TFT and a capacitor connected to the TFT. The display panel may further comprise an obtaining module 701, a determining module 702 and an adjusting module 703. An obtaining module 701, configured to obtain a capacitance value of a capacitor in a target pixel circuit; a determining module 702, configured to determine the temperature of the target area according to the capacitance value obtained by the obtaining module 701 when the capacitance value is less than or equal to the capacitance threshold; and an adjusting module 703 for adjusting the driving voltage of the TFT in the pixel circuit in the target area according to the temperature determined by the determining module 702. The target pixel circuit is a pixel circuit in at least one pixel circuit, and the target area is an area where the target pixel circuit is located on the display panel.
Optionally, in this embodiment of the present invention, the obtaining module 701, the determining module 702, and the adjusting module 703 may be implemented by an Integrated Circuit (IC). That is, the obtaining module 701, the determining module 702 and the adjusting module 703 may be each functional module in the IC. It is understood that the pixel circuit control method provided by the embodiment of the present invention can be implemented by programming the IC.
Optionally, in the embodiment of the present invention, a capacitance value of a capacitor in one pixel circuit increases with an increase in temperature of an area of the display panel where the one pixel circuit is located.
Optionally, in the embodiment of the present invention, the threshold voltage of the TFT in one pixel circuit decreases with an increase in temperature of an area of the display panel where the one pixel circuit is located. Wherein the threshold voltage is an on voltage or an off voltage, and the driving voltage of the TFT in the one pixel circuit is greater than or equal to the threshold voltage.
Optionally, the adjusting module 703 is specifically configured to adjust a driving voltage corresponding to a target driving signal according to the temperature, where the target driving signal is used to drive a TFT in a pixel circuit in the target area.
Optionally, the adjusting module 703 is specifically configured to determine a target temperature range where the temperature is located, and adjust the driving voltage corresponding to the target driving signal according to a target threshold voltage corresponding to the target temperature range.
The display panel provided by the embodiment of the invention can realize each process executed by the terminal device in the pixel circuit control method embodiment, and can achieve the same technical effect, and for avoiding repetition, the details are not repeated here.
Embodiments of the present invention provide a display panel, which may include at least one pixel circuit. Because the capacitance value of the capacitor in the pixel circuit on the display panel and the threshold voltage (including the turn-on voltage and the turn-off voltage) of the TFT in the pixel circuit change along with the temperature change of the area of the pixel circuit on the display panel, the temperature of the area of the pixel circuit can be determined according to the capacitance value of the capacitor in the pixel circuit, and the driving voltage of the TFT is adaptively adjusted according to the temperature, so that the driving voltage is greater than or equal to the threshold voltage corresponding to the temperature, and the TFT works normally. When the display panel works, the temperature of the area of the pixel circuit on the display panel can be increased, and the threshold voltage of the TFT in the pixel circuit can be reduced, so that the TFT can be switched on or switched off by a lower driving voltage. Furthermore, when the display panel is applied to the terminal device, the electric quantity consumed by the terminal device can be reduced by reducing the electric quantity consumed by the display panel when the display panel works, so that the power consumption of the terminal device in the display process can be reduced.
An embodiment of the present invention provides a terminal device, which may include the display panel in the foregoing embodiment. For the description of the display panel, reference may be made to the related description in the above embodiments, and details are not repeated here.
An embodiment of the present invention provides a terminal device, where the terminal device includes a display panel, and the display panel may include at least one pixel circuit. Because the capacitance value of the capacitor in the pixel circuit on the display panel and the threshold voltage (including the turn-on voltage and the turn-off voltage) of the TFT in the pixel circuit change along with the temperature change of the area of the pixel circuit on the display panel, the temperature of the area of the pixel circuit can be determined according to the capacitance value of the capacitor in the pixel circuit, and the driving voltage of the TFT is adaptively adjusted according to the temperature, so that the driving voltage is greater than or equal to the threshold voltage corresponding to the temperature, and the TFT works normally. When the display panel works, the temperature of the area of the pixel circuit on the display panel can be increased, and the threshold voltage of the TFT in the pixel circuit can be reduced, so that the TFT can be switched on or switched off by a lower driving voltage. Furthermore, when the display panel is applied to the terminal device, the electric quantity consumed by the terminal device can be reduced by reducing the electric quantity consumed by the display panel when the display panel works, so that the power consumption of the terminal device in the display process can be reduced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A pixel circuit control method is applied to a display panel, and is characterized in that the display panel comprises at least one pixel circuit, each pixel circuit comprises a Thin Film Transistor (TFT) and a capacitor connected with the TFT, and the method comprises the following steps:
acquiring a capacitance value of a capacitor in a target pixel circuit, wherein the target pixel circuit is a pixel circuit in the at least one pixel circuit; under the condition that the capacitance value is smaller than or equal to a capacitance threshold value, determining the temperature of a target area according to the capacitance value, wherein the target area is an area where the target pixel circuit is located on the display panel;
adjusting the driving voltage of the TFT in the pixel circuit in the target area according to the temperature;
under the condition that the capacitance value is larger than a capacitance threshold value, the terminal equipment judges whether the temperature rise of the target area is the reason for causing the capacitance value to be larger than the capacitance threshold value or not through a calibration algorithm, and under the condition that the temperature rise of the target area is the reason for causing the capacitance value to be larger than the capacitance threshold value, the terminal equipment adjusts the capacitance value of the capacitor in the target pixel circuit to be a capacitance reference value through the calibration algorithm;
the threshold voltage of the TFT in one pixel circuit is reduced along with the increase of the temperature of the area of the pixel circuit on the display panel, and the threshold voltage is the turn-on voltage of the TFT or the turn-off voltage of the TFT; the driving voltage of the TFT in the one pixel circuit is greater than or equal to the threshold voltage.
2. The method according to claim 1, wherein a capacitance of the capacitor in one pixel circuit increases with an increase in temperature of an area of the display panel where the one pixel circuit is located.
3. The pixel circuit control method according to claim 1, wherein the adjusting the driving voltage of the TFT in the pixel circuit in the target region according to the temperature comprises:
and adjusting a driving voltage corresponding to a target driving signal according to the temperature, wherein the target driving signal is used for driving the TFT in the pixel circuit in the target area.
4. The pixel circuit control method according to claim 3, wherein the adjusting the driving voltage corresponding to the target driving signal according to the temperature comprises:
determining a target temperature range in which the temperature is located;
and adjusting the driving voltage corresponding to the target driving signal according to the target threshold voltage corresponding to the target temperature range.
5. The display panel is characterized by comprising at least one pixel circuit, each pixel circuit comprises a Thin Film Transistor (TFT) and a capacitor connected with the TFT, and the display panel further comprises an acquisition module, a determination module and an adjustment module;
the obtaining module is configured to obtain a capacitance value of a capacitor in a target pixel circuit, where the target pixel circuit is a pixel circuit in the at least one pixel circuit;
the determining module is configured to determine a temperature of a target area according to the capacitance value acquired by the acquiring module under the condition that the capacitance value is less than or equal to a capacitance threshold value, where the target area is located on the display panel by the target pixel circuit;
the adjusting module is used for adjusting the driving voltage of the TFT in the pixel circuit in the target area according to the temperature determined by the determining module;
under the condition that the capacitance value is larger than a capacitance threshold value, the terminal equipment judges whether the temperature rise of the target area is the reason for causing the capacitance value to be larger than the capacitance threshold value or not through a calibration algorithm, and under the condition that the temperature rise of the target area is the reason for causing the capacitance value to be larger than the capacitance threshold value, the terminal equipment adjusts the capacitance value of the capacitor in the target pixel circuit to be a capacitance reference value through the calibration algorithm;
the threshold voltage of the TFT in one pixel circuit is reduced along with the increase of the temperature of the area of the pixel circuit on the display panel, and the threshold voltage is the turn-on voltage of the TFT or the turn-off voltage of the TFT; the driving voltage of the TFT in the one pixel circuit is greater than or equal to the threshold voltage.
6. The display panel according to claim 5, wherein a capacitance value of a capacitor in one pixel circuit increases as a temperature of a region of the display panel where the one pixel circuit is located increases.
7. The display panel according to claim 5, wherein the adjusting module is specifically configured to adjust a driving voltage corresponding to a target driving signal according to the temperature, and the target driving signal is used to drive a TFT in a pixel circuit in the target area.
8. The display panel according to claim 7, wherein the adjusting module is specifically configured to determine a target temperature range in which the temperature is located, and adjust the driving voltage corresponding to the target driving signal according to a target threshold voltage corresponding to the target temperature range.
9. A terminal device characterized by comprising the display panel according to any one of claims 5 to 8.
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| GB2436389A (en) * | 2006-03-23 | 2007-09-26 | Sharp Kk | Active matrix liquid crystal device with temperature measuring capacitor |
| WO2008065778A1 (en) * | 2006-11-30 | 2008-06-05 | Sharp Kabushiki Kaisha | Display device, and driving method for display device |
| CN102982778A (en) * | 2012-12-11 | 2013-03-20 | 友达光电(厦门)有限公司 | Driving voltage compensation system for GOA circuit |
| CN103018531B (en) * | 2012-12-11 | 2015-04-08 | 京东方科技集团股份有限公司 | Current detection circuit, temperature compensation device and display device |
| CN104036740B (en) * | 2014-05-16 | 2017-04-19 | 京东方科技集团股份有限公司 | Control circuit of gate driving circuit, working method and display device |
| CN106847156B (en) * | 2017-03-16 | 2020-04-24 | 昆山龙腾光电股份有限公司 | Gate drive circuit and display device |
| CN107063498B (en) * | 2017-05-19 | 2024-01-30 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Temperature sensor and preparation method thereof |
| CN107329307B (en) * | 2017-08-16 | 2021-02-09 | 上海天马微电子有限公司 | Display device |
| CN107393467A (en) * | 2017-08-22 | 2017-11-24 | 京东方科技集团股份有限公司 | Show backboard, display device, display device method for excessive heating protection and the method for controlling display device display picture brightness |
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