CN217485072U

CN217485072U - Display device

Info

Publication number: CN217485072U
Application number: CN202221622231.2U
Authority: CN
Inventors: 徐爱臣; 赵树斌; 王积运; 曹建伟
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-23
Anticipated expiration: 2032-06-27

Abstract

The embodiment of the application provides a display device, which comprises a display, a non-display area and a controller, wherein the display area and the non-display area are arranged on the periphery of the display area, the non-display area comprises at least one target conductor segment, the target conductor segment is a conductor segment for non-display, and the controller is connected with the display and is configured to: the method comprises the steps of obtaining data to be displayed, wherein the data to be displayed is used for displaying in a display area, obtaining target differential pressure of a target conductor section in a display under the action of constant current, the resistivity of the target conductor section is related to temperature, performing overdrive compensation on the data to be displayed according to the target differential pressure to obtain new data to be displayed, and the display is configured to display the new data to be displayed in the display area. The embodiment of the application provides a display device need not to add temperature sensor, has reduced the hardware cost.

Description

Display device

Technical Field

The embodiment of the application relates to the technical field of display, in particular to a display device.

Background

With the change of temperature, the viscosity coefficient and response speed of the liquid crystal are affected, and the display has a tailing phenomenon or a decoloration phenomenon when displaying a picture.

In the related art, a temperature sensor is provided to obtain a current temperature, and a corresponding lookup table is selected based on the current temperature to perform overdrive compensation.

However, in the process of implementing the present application, the inventors found that at least the following problems exist in the related art: the addition of a temperature sensor requires increased hardware costs.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a display device, so that overdrive compensation is realized on the premise of not increasing hardware cost, and the influence of temperature change is eliminated.

An embodiment of the present application provides a display device, including:

a display including a display area and a non-display area; the non-display area is positioned at the periphery of the display area; the non-display area includes at least one target conductor segment; the target conductor segment is a non-display conductor segment;

a controller coupled to the display and configured to:

acquiring data to be displayed; the data to be displayed is used for displaying in the display area;

acquiring a target voltage difference of a target conductor segment in a display under the action of constant current; the resistivity of the target conductor segment is temperature dependent;

performing overdrive compensation on the data to be displayed according to the target pressure difference to obtain new data to be displayed;

the display is configured to display the new data to be displayed in the display area.

In one possible design, the controller includes: a comparator and a processor;

the first input end of the comparator is connected with the target voltage difference, the second input end of the comparator is connected with a target reference voltage, and the output end of the comparator is connected with the processor and used for comparing the target voltage difference with the reference voltage to obtain a comparison result;

and the processor is used for performing overdrive compensation on the data to be displayed according to the comparison result to obtain new data to be displayed.

In one possible design, the controller further includes: a selector;

the selector is connected with the processor and the target voltage difference and is used for sequentially selecting and outputting the target reference voltage from a plurality of candidate reference voltages under the control of the processor;

the comparator is specifically used for sequentially comparing the target voltage difference with a selected target reference voltage to obtain a plurality of comparison results;

and the processor is used for performing overdrive compensation on the data to be displayed according to the comparison results to obtain new data to be displayed.

In one possible design, the comparator includes a plurality of sub-comparators; the target reference voltage includes a plurality of target voltages:

the sub-comparators correspond to the target voltages one by one;

each sub-comparator is connected with the target voltage difference at a first input end, the corresponding target voltage at a second input end and the processor at an output end, and is used for comparing the target voltage difference with the corresponding target voltage to obtain a comparison result;

In one possible design, the processor is specifically configured to:

determining a target temperature corresponding to the target pressure difference according to the comparison result;

determining an overdrive lookup table corresponding to the target temperature according to the target temperature;

and performing overdrive compensation on the data to be displayed according to the overdrive lookup table.

In one possible design, the processor is specifically configured to:

determining an overdrive lookup table corresponding to the target pressure difference according to the comparison result;

In one possible design, the controller further includes a storage unit:

the storage unit is connected with the processor and used for storing a plurality of pressure difference ranges, a plurality of overdrive lookup tables and corresponding relations between the pressure difference ranges and the overdrive lookup tables;

and the processor is used for selecting an overdrive lookup table corresponding to the target pressure difference from the overdrive lookup tables according to the corresponding relation and the target pressure difference.

In one possible design, the controller is further configured to:

after the temperature of the panel is adjusted to a target temperature, determining a target differential pressure of the target conductor segment under the action of constant current, and determining an overdrive lookup table;

and correspondingly associating and storing the target pressure difference and the overdrive lookup table.

In one possible design, the controller includes a constant current source;

the constant current source is connected with the target conductor segment and used for providing the constant current for the target conductor segment.

The display device provided by the embodiment comprises a display, a non-display area and a controller, wherein the display comprises a display area and the non-display area, the non-display area is located on the periphery of the display area, the non-display area comprises at least one target conductor segment, the target conductor segment is a conductor segment for non-display, and the controller is connected with the display and configured to: the method comprises the steps of obtaining data to be displayed, wherein the data to be displayed is used for displaying in a display area, obtaining target differential pressure of a target conductor segment in a display under the action of constant current, the resistivity of the target conductor segment is related to temperature, performing overdrive compensation on the data to be displayed according to the target differential pressure to obtain new data to be displayed, and the display is configured to display the new data to be displayed in the display area. The embodiment of the application provides a display device, through obtaining the target differential pressure of a target conductor segment in a display under the action of constant current, and carrying out adaptive overdrive compensation on data to be displayed according to the target differential pressure, a temperature sensor does not need to be additionally arranged, and the hardware cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings required to be used in the description of the embodiments or related technologies are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of an operation scenario between a display device and a control apparatus according to one or more embodiments of the present application;

fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment;

fig. 3 exemplarily shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment;

FIG. 4 is a diagram illustrating a software configuration in a display device 200 according to one or more embodiments of the present application;

FIG. 5 is a schematic illustration of an icon control interface display of an application in a display apparatus 200 according to one or more embodiments of the present application;

FIG. 6 is a schematic diagram of a display device 200 according to one or more embodiments of the present application;

fig. 7 is a schematic diagram of a controller of a display device 200 according to one or more embodiments of the present application;

fig. 8 is a schematic diagram of a controller of a display device 200 according to one or more embodiments of the present application;

fig. 9 is a schematic structural diagram of a controller of a display device 200 according to one or more embodiments of the present application;

fig. 10 is a schematic structural diagram of a controller of a display device 200 according to one or more embodiments of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module," as used herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in this application refers to a component of an electronic device (such as the display device disclosed in this application) that is typically wirelessly controllable over a relatively short range of distances. Typically using infrared and/or Radio Frequency (RF) signals and/or bluetooth to connect with the electronic device, and may also include WiFi, wireless USB, bluetooth, motion sensor, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in this application refers to a user's behavior through a change in hand shape or an action such as hand motion to convey a desired idea, action, purpose, or result.

Fig. 1 is a schematic diagram of an operation scenario between a display device and a control apparatus according to one or more embodiments of the present application, and as shown in fig. 1, a user may operate a display apparatus 200 through a mobile terminal 300 and the control apparatus 100. The control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication, bluetooth protocol communication, wireless or other wired method to control the display apparatus 200. The user may input a user command through a button on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices may also be used to control the display apparatus 200.

In some embodiments, the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. The audio and video contents displayed on the mobile terminal 300 can also be transmitted to the display device 200, so that the display device 200 with the synchronous display function can also perform data communication with the server 400 through various communication modes. The display apparatus 200 may be allowed to make a communication connection through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The display device 200 may be a liquid crystal display, an OLED display, or a projection display device. The display apparatus 200 may additionally provide an intelligent network tv function providing a computer support function in addition to the broadcast receiving tv function.

Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control device 100 may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200. The communication interface 130 is used for communicating with the outside, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module. The user input/output interface 140 includes at least one of a microphone, a touch pad, a sensor, a key, or an alternative module.

Fig. 3 exemplarily shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment. The display device 200 as shown in fig. 3 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface 280. The controller includes a central processor, a video processor, an audio processor, a graphic processor, a RAM, a ROM, and first to nth interfaces for input/output. The display 260 may be at least one of a liquid crystal display, an OLED display, a touch display, and a projection display, and may also be a projection device and a projection screen. The tuner demodulator 210 receives a broadcast television signal through a wired or wireless reception manner, and demodulates an audio/video signal, such as an EPG data signal, from a plurality of wireless or wired broadcast television signals. The detector 230 is used to collect signals of an external environment or interaction with the outside. The controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. The user may input a user command through a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A common presentation form of a User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc. visual interface elements.

Fig. 4 is a schematic diagram of a software configuration in a display device 200 according to one or more embodiments of the present Application, and as shown in fig. 4, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (referred to as an "Application layer"), an Application Framework (Application Framework) layer (referred to as a "Framework layer"), an Android runtime (Android runtime) and system library layer (referred to as a "system runtime library layer"), and a kernel layer. The inner core layer comprises at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..

Fig. 5 is a schematic diagram illustrating an icon control interface display of an application program in the display device 200 according to one or more embodiments of the present application, as shown in fig. 5, an application layer includes at least one application program that can display a corresponding icon control on a display, for example: the system comprises a live television application icon control, a video on demand application icon control, a media center application icon control, an application center icon control, a game application icon control and the like. The live television application program can provide live television through different signal sources. A video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides a video display from some storage source. The media center application program can provide various applications for playing multimedia contents. The application program center can provide and store various application programs.

In some embodiments, whether the display 260 employs a positive liquid crystal panel or a negative liquid crystal panel, the panel temperature affects the response time of the display 260 and the smearing degree when displaying moving pictures, wherein the ADS N-LC type liquid crystal panel is more significantly affected by the temperature. Specifically, in a Liquid Crystal Display (LCD), a Liquid Crystal layer having an anisotropic dielectric constant is injected between two base layers of a Display panel, and light transmittance of the Display panel is controlled by applying and controlling an electric field to obtain a desired gray scale, resulting in a desired image. A conventional Thin Film Transistor Liquid Crystal Display (TFT-LCD) has a slow response speed, and in order to solve the problem of slow response speed, an overdrive Drive function is usually used to improve the response time. And determining the compensation data voltage according to the dynamic capacitance and the response speed of the liquid crystal. However, the dynamic capacitance and response speed of the liquid crystal vary with temperature. When the temperature rises, the viscosity of the liquid crystal decreases, and the response speed of the liquid crystal increases. In contrast, when the temperature is lowered, the viscosity of the liquid crystal is increased and the response speed is lowered. Based on this characteristic of the liquid crystal, when compensation is performed using the overdrive compensation value that needs to be used at a specific temperature at different temperatures, the following problems may result: when the current temperature is higher than a certain temperature, overcompensation occurs, resulting in an artifact in which the edge of the object is exaggeratedly displayed, and when the current temperature is lower than the certain temperature, undercompensation occurs, the response time becomes slower than the time of one frame, resulting in an afterimage.

In an environment with temperature variation, it is an important prerequisite to correctly perform overdrive compensation and improve display effect by taking the influence of temperature variation into consideration. In the related art, overdrive compensation can be performed by setting a temperature sensor to acquire a current temperature, and selecting a corresponding lookup table from a plurality of lookup tables (LUT0 to LUTn overdrive lookup tables) in an LUT storage unit based on the current temperature. However, the addition of a temperature sensor requires an increase in hardware cost.

In order to solve the above technical problem, the inventor of the present application has studied and found that the resistivity of the metal material (for example, copper Cu) constituting the scan signal electrode and the data signal electrode in the liquid crystal panel has a characteristic of changing with temperature, and by using this characteristic, the current flowing through the wire is fixed, so that the change of the voltage on the wire is proportional to the change of the resistivity, and since the change of the resistivity is related to the temperature, the voltage on the wire can reflect the current temperature, and therefore, the target differential voltage of the target wire segment in the panel under the action of the constant current can be obtained, and the overdrive compensation can be performed on the data to be displayed according to the target differential voltage. Based on this, the embodiment of the application provides a display device, by obtaining the target differential pressure of the target conductor segment in the display under the action of the constant current and performing adaptive overdrive compensation on data to be displayed according to the target differential pressure, the influence of temperature change on the overdrive compensation is overcome, a temperature sensor does not need to be additionally arranged, and the hardware cost is reduced.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

The display device provided by the embodiment of the application can comprise: the display comprises a display area and a non-display area, the non-display area is positioned at the periphery of the display area, the non-display area comprises at least one target conductor segment, the target conductor segment is a conductor segment for non-display, the controller is used for acquiring data to be displayed, the data to be displayed is used for displaying in the display area, and target differential pressure of the target conductor segment in the display under the action of constant current is acquired; and the resistivity of the target conductor segment is related to the temperature, overdrive compensation is carried out on the data to be displayed according to the target pressure difference, new data to be displayed are obtained, and the new data to be displayed are sent to a display. The display is used for displaying the new data to be displayed in the display area.

In this embodiment, the thickness of the target conductor segment is not limited, as long as the resistivity of the target conductor segment is related to the temperature, and the voltage applied to the target conductor segment can reflect the change of the temperature, which is not limited in this embodiment.

In this embodiment, the data to be displayed may be video data or image data.

In this embodiment, the display and the controller can be connected by a Flexible Flat Cable (FFC), so that the wire connection is more convenient by randomly selecting the wire data and the distance, and the volume and the cost are saved.

In the specific implementation process, after the display device is powered on, constant current flows through a target conductor segment on the display, the resistivity of the target conductor segment is related to the current temperature, the voltage difference between two ends of the target conductor segment is the product of the constant current and the resistance, and the resistance is related to the resistivity and also related to the temperature, so that the target voltage difference between two ends of the target conductor segment can reflect the temperature change condition, the controller obtains the target voltage difference, performs self-adaptive overdrive compensation according to the target voltage difference to obtain new data to be displayed, sends the new data to be displayed to the display, and the display displays the new data to be displayed.

In this embodiment, the change of the resistivity of the metal electrode material of the liquid crystal panel with temperature can be referred to the following table 1:

TABLE 1

Temperature of	Resistivity Ω · m	Temperature of	Resistivity Ω · m
				0	0.0165	60	0.0206
10	0.0172	70	0.0212
				20	0.0178	75	0.0216
30	0.0185	80	0.0219
				35	0.0188	90	0.0226
40	0.0192	100	0.0233
				50	0.0200

According to the display device provided by the embodiment, the target differential pressure of the target conductor segment in the display under the action of the constant current is obtained, and the adaptive overdrive compensation is performed on the data to be displayed according to the target differential pressure, so that the influence of temperature change on the overdrive compensation is overcome, a temperature sensor does not need to be additionally arranged, and the hardware cost is reduced.

In some embodiments, the target conductor segments may use conductors in non-display areas outside the display area of the display, in order not to affect normal display functions, and also to save hardware costs. Specifically, the display comprises a display area and a non-display area; the display area is used for displaying the new data to be displayed; the target conductor segment is located in the non-display area.

Specifically, as shown in fig. 6, in the manufacturing process of the display panel, in addition to the pixel array and the wiring in the display area for displaying the image, the non-display area at the edge of the display panel is provided with the test wiring and some dummy pixels, and the dummy pixels and the test wiring can be used to implement a special pixel architecture design.

In this embodiment, the original wiring in the display panel is used to perform the target differential pressure of the target conductor segment, so that the design can be simplified and the hardware cost can be reduced.

In some embodiments, the controller comprises a constant current source; the constant current source is connected with the target conductor segment and used for providing the constant current for the target conductor segment.

In some embodiments, the controller comprises: a comparator and a processor; the first input end of the comparator is connected with the target voltage difference, the second input end of the comparator is connected with a target reference voltage, and the output end of the comparator is connected with the processor and used for comparing the target voltage difference with the reference voltage to obtain a comparison result; and the processor is used for performing overdrive compensation on the data to be displayed according to the comparison result to obtain new data to be displayed.

For example, as shown in fig. 7, the constant current source Is configured to provide a constant current for a target wire segment 2601 in the display 260, the target wire segment 2601 generates a target voltage difference V under the action of the constant current, V Is input to a first input end of the comparator 2501, a reference voltage Vref Is input to a second input end of the comparator 2501, comparison Is performed by the comparator 2501 to obtain a comparison result Vc, Vc Is input to the processor 2502, the processor 2502 performs overdrive compensation on data to be displayed according to Vc to obtain new data to be displayed, and the display 260 displays the new data to be displayed, thereby improving a display effect and avoiding an influence of temperature.

In this embodiment, the power supply voltage VDD connected to the constant current source Is may be the same as the reference voltage Vref. The specific value of Vref may be set according to actual needs, which is not limited in this embodiment.

In some embodiments, the constant current source and the target conductor segment are connected in series between a power supply and the ground, a connection point of the constant current source and the target conductor segment is connected with a first input end of a comparator, that is, a target voltage difference generated on the target conductor segment is input into the first input end of the comparator, a reference voltage is input into a second input end of the comparator, the comparator compares the target voltage difference with the reference voltage to obtain a comparison result, the processor calls an overdrive lookup table corresponding to the target voltage difference based on the comparison result, overdrive compensation is performed on data to be displayed based on the overdrive lookup table to obtain new data to be displayed, and the display displays the new display data, so that the display effect is improved, and the influence of temperature is avoided. The overdrive lookup table may be stored in advance in correspondence with the target differential pressure and the comparison result corresponding to the target differential pressure, so as to quickly find the overdrive lookup table corresponding to the target differential pressure.

In some embodiments, the controller further comprises a storage unit: the storage unit is connected with the processor and used for storing a plurality of pressure difference ranges, a plurality of overdrive lookup tables and corresponding relations between the pressure difference ranges and the overdrive lookup tables; and the processor is used for selecting an overdrive lookup table corresponding to the target pressure difference from the overdrive lookup tables according to the corresponding relation and the target pressure difference.

In the embodiment, the storage unit can be ROM, EEPROM, FLASH, EMMC and other memories which are not lost when power is off,

for example, as shown in fig. 8, the constant current source Is configured to provide a constant current for a target wire segment 2601 in the display 260, the target wire segment 2601 generates a target voltage difference V under the action of the constant current, V Is input to a first input end of the comparator 2501, a reference voltage Vref Is input to a second input end of the comparator 2501, comparison Is performed by the comparator 2501 to obtain a comparison result Vc, Vc Is input to the processor 2502, the processor 2502 selects an overdrive lookup table associated with Vc from a plurality of overdrive lookup tables stored in the storage unit 2503 according to Vc, overdrive compensation Is performed on data to be displayed according to the corresponding overdrive lookup table to obtain new data to be displayed, and the display 260 displays the new data to be displayed, thereby improving the display effect and avoiding the influence of temperature.

In some embodiments, the controller is further configured to: after the temperature of the panel is adjusted to a target temperature, determining a target differential pressure of the target conductor segment under the action of constant current, and determining an overdrive lookup table; and correspondingly associating and storing the target pressure difference and the overdrive lookup table.

In this embodiment, the target temperature may be a temperature range, for example, 20.5 ℃ to 23.5 ℃. In the process of adjusting the temperature, a temperature measuring element can be arranged on the panel, and when the temperature displayed by the temperature measuring element reaches the target temperature, the temperature of the panel is judged to be adjusted to the target temperature.

Specifically, a certain constant temperature, for example, 20 ℃, may be set first, at which a target differential pressure (which may be a differential pressure range corresponding to a target differential pressure determined from a comparison result with the reference voltage) is determined, and an overdrive lookup table is determined, respectively. Thus, the determined target pressure difference can be associated with the overdrive lookup table. Of course, the target pressure difference and the overdrive lookup table may also be associated with a temperature, the target pressure difference may also be associated with a temperature, and the overdrive lookup table and the temperature may also be associated with a temperature, which may be specifically designed according to actual needs, and this embodiment does not limit this. Second, the determination of the response time and drive look-up table can be made for a number of constant temperatures, for example 22 deg.C, 24 deg.C. The interval between the temperatures can also be designed according to actual needs, and for more accurate compensation, the interval can be designed to be smaller, for example, the interval can be 1 ℃. In order to save the storage space for driving the lookup table or the test time, the interval may be designed to be larger, for example, the interval may be 5 ℃, which is not limited in this embodiment.

In practical applications, when the interval is large, for example, the corresponding relationship between the differential pressure ranges at 20 ℃, 25 ℃, 30 ℃ and 35 ℃ and the overdrive lookup table is obtained in advance. Then if the measured temperature is 21 c then the proximity rule can be used to call the overdrive lookup table for the 20 c correspondence.

In a specific implementation process, when the Over Drive value is debugged, N Over Drive lookup tables are determined according to the set N temperature ranges. When different temperature ranges are detected by using the resistivity change of the built-in wires of the panel, the controller selects the corresponding OD LUT for the response time correction of the data to be displayed. In addition to the difference of the external environment temperature, the temperature of the television immediately after the television is started up and after the television is started up for a period of time also has difference, so that the voltage comparison process needs to be continuously monitored in real time after the television is started up, and the overdrive lookup table is dynamically adjusted according to the temperature obtained by the monitoring result, so that the OD LUT is used for dynamically improving the change of the liquid crystal response time brought by the temperature.

For example, as shown in fig. 7, taking a northern area summer room temperature of 26 ℃ as an example, when the liquid crystal panel is powered on, the ambient temperature of the liquid crystal panel is 26 ℃, the resistivity of the copper wire for detection is ρ 26 ═ ρ 0(1+ at26), the output potential of the test copper wire is V1, which is denoted as V26 ═ Vref + ρ 26 ═ is, and the output voltage difference Vc is ρ 0(1+ at26) > is, a voltage difference corresponding to the temperature can be obtained in advance according to the resistivities of different temperatures, so as to obtain the corresponding temperature. Assuming that the maximum temperature 37 ℃ that the screen can be raised, the variation range of 11 ℃ is divided into two sections, 26-31 ℃ is the temperature range 1, 32-37 ℃ is the temperature range 2, when the intermediate temperature 28.5 ℃ of the temperature range 1 is constant, the overdrive lookup table LUT1 is obtained by adjustment, and when the intermediate temperature 34.5 ℃ of the temperature range 2 is constant, the overdrive lookup table LUT2 is obtained by adjustment. When the resistance change of the wires in the panel is monitored in real time after the power is on, and the corresponding temperature is determined to be 31 ℃ through comparison and falls in the interval of the temperature range 2, the controller calls the LUT2 to process when the response time of the display data is adjusted.

In some embodiments, the controller may include: a comparator, a selector and a processor; the selector is connected with the processor and the target voltage difference and is used for sequentially selecting and outputting the target reference voltage from a plurality of candidate reference voltages under the control of the processor; the comparator is specifically used for sequentially comparing the target voltage difference with a selected target reference voltage to obtain a plurality of comparison results; and the processor is used for performing overdrive compensation on the data to be displayed according to the comparison results to obtain new data to be displayed.

Illustratively, as shown in fig. 9, the constant current source Is configured to provide a constant current to a target conductor segment 2601 in the display 260, the target conductor segment 2601 generates a target voltage difference V under the action of the constant current, V Is input to a first input terminal of the comparator 2501, a second input terminal of the comparator 2501 Is connected to an output terminal of the selector 2504, a voltage input terminal of the selector 2504 Is connected to Vref1, Vref2 and Vref3, a control input terminal of the selector 2504 Is connected to the processor 2502, the selector 2504 Is controlled by the processor 2502 to sequentially input reference voltages to the second input terminal of the comparator, and the reference voltages are compared with V to obtain corresponding comparison results, for example, Vc1 corresponding to Vref1, Vc2 corresponding to Vref2, and Vc3 corresponding to Vref 3. The processor 2502 determines the differential pressure range of V according to the three comparison results, for example, between Vref1 and Vref2, and further may select an overdrive lookup table associated with the selected overdrive lookup table from a plurality of overdrive lookup tables stored in the storage unit 2503, perform overdrive compensation on data to be displayed according to the corresponding overdrive lookup table, obtain new data to be displayed, and the display 260 displays the new data to be displayed, thereby improving the display effect and avoiding the influence of temperature. By adopting the selector, the comparison result is input into the processor in series, the accuracy of the target pressure difference can be improved, and the hardware cost can be reduced compared with a parallel mode of a plurality of comparators.

In some embodiments, the controller comprises a comparator and a processor, the comparator comprising a plurality of sub-comparators; the target reference voltage includes a plurality of target voltages: the sub comparators correspond to the target voltages one by one; each sub-comparator is connected with the target voltage difference at a first input end, the corresponding target voltage at a second input end and the processor at an output end, and is used for comparing the target voltage difference with the corresponding target voltage to obtain a comparison result; and the processor is used for performing overdrive compensation on the data to be displayed according to the comparison results to obtain new data to be displayed.

Illustratively, as shown in fig. 10, the constant current source Is provides a constant current to a target wire segment 2601 in the display 260, the target wire segment 2601 generates a target voltage difference V under the action of the constant current, V Is input to first input terminals of a plurality of sub-comparators (25011 and 25012) of the comparator, a second input terminal of the sub-comparator 25011 Is connected to a reference voltage Vref1, a second input terminal of the sub-comparator 25012 Is connected to a reference voltage Vref2, the sub-comparator 25011 compares Vref1 with V to obtain a corresponding comparison result Vc1, and the sub-comparator 25012 compares Vref2 with V to obtain a corresponding comparison result Vc 2. The processor 2502 determines the range of the voltage difference of V according to the comparison results Vc1 and Vc2, for example, between Vref1 and Vref2, and further may select an overdrive lookup table associated therewith from a plurality of overdrive lookup tables stored in the storage unit 2503, perform overdrive compensation on data to be displayed according to the corresponding overdrive lookup table, obtain new data to be displayed, and the display 260 displays the new data to be displayed, thereby improving the display effect and avoiding the influence of temperature. By adopting the selector, the comparison result is serially input into the processor, the accuracy of the target pressure difference can be improved, and the processing speed can be improved compared with a serial mode of adopting one comparator and one selector.

In some embodiments, after obtaining the comparison result, there are various ways to look up the overdrive lookup table corresponding to the target differential pressure based on the comparison result.

In one possible implementation, the processor may be configured to: determining a target temperature corresponding to the target pressure difference according to the comparison result; determining an overdrive lookup table corresponding to the target temperature according to the target temperature; and performing overdrive compensation on the data to be displayed according to the overdrive lookup table.

For example, as shown in fig. 7, the constant current source Is configured to provide a constant current to a target wire segment 2601 in the display 260, the target wire segment 2601 generates a target voltage difference V under the action of the constant current, V Is input to a first input end of the comparator 2501, a reference voltage Vref Is input to a second input end of the comparator 2501, the comparison result Vc Is obtained by the comparison of the comparator 2501, Vc Is input to the processor 2502, the processor 2502 selects a target temperature corresponding to Vc from a plurality of temperatures stored in the storage unit 2503 according to Vc, selects an overdrive lookup table corresponding to the target temperature from the plurality of overdrive lookup tables according to the target temperature, and performs overdrive compensation on data to be displayed according to the overdrive lookup table to obtain new data to be displayed, and the display 260 displays the new data to be displayed, thereby improving the display effect and avoiding the influence of the temperature.

In another implementation, the processor may be configured to: determining an overdrive lookup table corresponding to the target pressure difference according to the comparison result; and performing overdrive compensation on the data to be displayed according to the overdrive lookup table.

For example, as shown in fig. 7, the constant current source Is configured to provide a constant current to a target wire segment 2601 in the display 260, the target wire segment 2601 generates a target voltage difference V under the action of the constant current, V Is input to a first input end of the comparator 2501, a reference voltage Vref Is input to a second input end of the comparator 2501, the comparison result Vc Is obtained by comparing the target voltage difference V with the reference voltage Vref through the comparator 2501, Vc Is input to the processor 2502, the processor 2502 selects an overdrive lookup table corresponding to Vc from a plurality of overdrive lookup tables stored in the storage unit 2503 according to Vc, overdrive compensation Is performed on data to be displayed according to the overdrive lookup table, new data to be displayed Is obtained, and the display 260 displays the new data to be displayed, so that the display effect Is improved, and the influence of temperature Is avoided.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, comprising:

a controller, coupled to the display, configured to:

2. The display device according to claim 1, wherein the controller comprises: a comparator and a processor;

3. The display device according to claim 2, wherein the controller further comprises: a selector;

4. The display device according to claim 2, wherein the comparator includes a plurality of sub-comparators; the target reference voltage includes a plurality of target voltages:

the sub-comparators correspond to the target voltages one by one;

5. The display device of claim 2, wherein the processor is specifically configured to:

6. The display device of claim 2, wherein the processor is specifically configured to:

7. The display device according to claim 6, wherein the controller further comprises a storage unit:

8. The display device according to any one of claims 1 to 7, wherein the controller is further configured to:

9. The display device according to any one of claims 1 to 7, wherein the controller includes a constant current source;