CN113075820A

CN113075820A - Display device, control method and optical module

Info

Publication number: CN113075820A
Application number: CN202110346656.9A
Authority: CN
Inventors: 苏跃峰; 宋扬; 张亚惠
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-07-06

Abstract

The application discloses display device, control method and optical module, display device includes: a backlight assembly for emitting an initial backlight; the initial backlight emitted from different areas of the backlight assembly meets the same condition; an optical assembly disposed within an illumination range of the initial backlight for forming a display backlight according to the initial backlight; the optical assembly comprises at least 2 optical regions, each optical region having at least two respective optical states, the display backlight being different in the different optical states; a display assembly including an array of display elements disposed within an illumination range of a display backlight, each of the optical regions corresponding to at least 1 display element, wherein the array of display elements is configured to be in a corresponding display state according to display content, wherein the display backlight is capable of forming a visually perceptible image through the array of display elements; a temperature component for affecting a temperature of the optical component; the switching speed of the optical states differs at different temperatures.

Description

Display device, control method and optical module

Technical Field

The application relates to the technical field of electronic equipment, in particular to display equipment, a control method and an optical module.

Background

With the continuous development of science and technology, more and more display devices are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present.

A liquid crystal display device is a mainstream display device at present, and mainly includes a backlight assembly and a display assembly which are arranged oppositely, and the display assembly can display an image based on display data and backlight emitted from the backlight assembly. The display effect of the existing liquid crystal display equipment is greatly influenced by temperature.

Disclosure of Invention

In view of the above, the present application provides a display device, a control method and an optical module, and the scheme is as follows:

a display device, comprising:

a backlight assembly for emitting an initial backlight; the initial backlight emitted by different areas of the backlight assembly meets the same condition;

the optical assembly is arranged in the irradiation range of the initial backlight and used for forming display backlight according to the initial backlight; wherein the optical assembly comprises at least 2 optical zones, each of the optical zones having a respective at least two optical states, the display backlight being different in the different optical states;

a display assembly including an array of display elements disposed within an illumination range of the display backlight, each of the optical regions corresponding to at least 1 display element, wherein the array of display elements is configured to be in a corresponding display state according to display content, wherein the display backlight is capable of forming a visually perceptible image through the array of display elements;

a temperature component for affecting a temperature of the optical component; wherein the switching speed of the optical states is different at different temperatures.

Preferably, in the above display device, further comprising:

a control component for controlling an optical state of each of the optical regions of the optical component such that a display backlight and the display content of each of the optical regions match.

Preferably, in the above display device, further comprising:

the temperature acquisition component is used for acquiring temperature information representing the temperature of the optical component;

and the control component is used for controlling the working state of the temperature component based on the temperature information.

Preferably, in the above display apparatus, wherein the temperature component includes: the heating device comprises a substrate and a heating piece arranged on the substrate, wherein the heating piece can generate heat based on electric energy consumption;

wherein the temperature component is attached to any one of the display component, the optical component and the backlight component;

wherein the light transmittance of the temperature component is sufficient to form the visually perceptible image.

Preferably, in the above display apparatus, the temperature component includes a heat generating member capable of generating heat based on power consumption;

wherein the heat generating member is disposed at least one of the display assembly, the optical assembly and the backlight assembly.

the heating part is made of a conductive material with light transmittance larger than a first threshold value, and the coverage rate of the heating part on the optical component is not smaller than a first proportion; or the heating part is made of a conductive material with the light transmittance smaller than a second threshold value, and the coverage rate of the heating part on the optical component is smaller than a second proportion; the first threshold is greater than the second threshold, and the first ratio is greater than the second ratio.

Preferably, in the above display device, the temperature component includes a plurality of temperature regions, the temperature regions cover at least one of the optical regions, and different temperature regions cover different optical regions.

The application also provides a control method, which comprises the following steps:

responding to a temperature adjusting instruction, and adjusting the temperature component to influence the temperature of the optical component; the optical assembly is arranged in the irradiation range of initial backlight emitted by the backlight assembly and used for forming display backlight according to the initial backlight; wherein the optical assembly comprises at least 2 optical zones, each of the optical zones having a respective at least two optical states, the display backlight being different in the different optical states;

controlling the optical state of each optical region of the optical assembly such that the display backlight and the display content of each optical region match;

controlling the display element array in the display assembly to be in a corresponding display state according to the display content; wherein the display array is disposed within an illumination range of the display backlight, the display backlight being capable of forming a visually perceptible image by the array of display elements.

Preferably, in the above control method, the method of adjusting the temperature component includes:

acquiring temperature information of the optical assembly;

controlling the temperature component to be turned on or off based on the temperature information;

the method for controlling the temperature component to be turned on or off comprises the following steps:

if the temperature of the optical component is less than a first set threshold value, starting the temperature component;

turning off the temperature component if the temperature of the optical component is greater than a second set threshold;

wherein the first set threshold is less than the second set threshold.

The application also provides an optical module, including:

the functional component is arranged in the irradiation range of the initial backlight and used for forming a target light set based on the initial backlight; wherein the functional component comprises at least 2 segments, each segment having at least two respective optical states, the set of target rays being different in the different optical states;

a temperature component for affecting a temperature of the functional component; wherein the switching speed of the optical states is different at different temperatures.

Drawings

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

The structures, proportions, and dimensions shown in the drawings and described in the specification are for illustrative purposes only and are not intended to limit the scope of the present disclosure, which is defined by the claims, but rather by the claims, it is understood that these drawings and their equivalents are merely illustrative and not intended to limit the scope of the present disclosure.

FIG. 1 is a schematic view showing a structure of a conventional liquid crystal display device;

fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 3 is a cross-sectional view of a display device according to an embodiment of the present application;

FIG. 4 is a top view of the optical assembly of the display device shown in FIG. 3;

FIG. 5 is a top view of a display assembly in the display device of FIG. 4;

FIG. 6 is a cross-sectional view of an optical assembly according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a temperature assembly according to an embodiment of the present disclosure;

FIG. 9 is a top view of a temperature assembly 34 provided in accordance with an embodiment of the present application;

fig. 10 is a schematic flowchart of a control method according to an embodiment of the present application;

FIG. 11 is a schematic flow chart illustrating a method for adjusting the temperature component according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of an optical module according to an embodiment of the present disclosure.

Detailed Description

The embodiments of the present application will be described in detail and fully with reference to the accompanying drawings, wherein the description is only for the purpose of illustrating the embodiments of the present application and is not intended to limit the scope of the 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 application.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, fig. 1 is a schematic structural view of a conventional liquid crystal display device, including: the backlight assembly 12 and the display assembly 11 are oppositely arranged, and the display assembly 11 can display images based on display data and backlight emitted by the backlight assembly 12. In the conventional liquid crystal display device, the backlight emitted from the backlight assembly 12 can only be adjusted in brightness as a whole, i.e. the backlight emitted from different areas of the backlight assembly 12 is the same.

In order to realize HDR display, it is necessary to enable a backlight assembly to have an area backlight adjustment function, that is, the backlight assembly needs to have a plurality of backlight areas, backlight brightness emitted from different backlight areas can be controlled independently, and when a liquid crystal display device displays an image, it is necessary to match the backlight brightness with display content, for example, when a display assembly displays a brighter area, the backlight brightness is relatively large, and when the display assembly displays a darker area, the backlight brightness is relatively small. Although local backlight adjustment can be realized by improving the backlight assembly, the method needs to improve the light source device and the driving circuit thereof in the backlight assembly, and if the backlight assembly with the MINI LED is required to realize local backlight adjustment, the scheme is complex and the cost is high.

The applicant has found that it is possible to add an optical component between the display assembly 11 and the backlight assembly 12 that can be used to achieve local backlight adjustment in a manner that does not require modification of the backlight assembly, when the display device is configured as shown in fig. 2.

As shown in fig. 2, fig. 2 is a schematic structural diagram of a display device provided in an embodiment of the present application, where the display device includes: a backlight assembly 22 and a display assembly 21 which are oppositely disposed, and an optical assembly 23 which is positioned between the display assembly 21 and the backlight assembly 22. Wherein, the optical component 23 is an electrically controlled liquid crystal film. The optical assembly 23 can perform area control on the backlight emitted by the backlight assembly 21, so as to realize area backlight adjustment. The display device 21 is a liquid crystal display module, and can display an image based on display data and display a backlight.

In order to realize HDR display, parameters such as reaction speed, operating voltage, haze state, transparency state, and haze of the optical component 23 are required to be higher, and particularly, the requirement on reaction speed is higher. The optical component 23 is made of liquid crystal material, and the reaction speed is strongly related to the temperature condition, when the temperature is higher, the reaction speed is faster, and when the temperature is lower than 0 ℃, if the reaction speed is to be higher, a higher working voltage is required, and the high-voltage driving mode is not suitable for the conventional mobile terminal device with low working voltage.

In order to solve the above problem, according to the technical scheme of the embodiment of the application, the temperature component for influencing the temperature of the optical component is added in the display device, so that the optical component can have appropriate working temperature at different environmental temperatures, and the rapid switching of different optical states of the optical component is ensured.

Fig. 3 is a cross-sectional view of a display device according to an embodiment of the present disclosure, fig. 4 is a top view of an optical component in the display device shown in fig. 3, and fig. 5 is a top view of a display component in the display device shown in fig. 4. The display device includes: a backlight assembly 31, an optical assembly 32, a display assembly 33, and a temperature assembly 34.

The backlight assembly 31 is used for emitting an initial backlight; the initial backlight emitted from different areas of the backlight assembly 31 satisfies the same condition. In the embodiment of the present application, the backlight assembly 31 may be a side-in type backlight assembly or a back-in type backlight assembly, the emergent initial backlight is a surface light source, the brightness of the emergent initial backlight can be integrally adjusted, and a complex structure for local backlight adjustment is not required.

The optical assembly 32 is disposed within an illumination range of the initial backlight for forming a display backlight from the initial backlight; wherein the optical assembly 32 comprises at least 2 optical regions 321, each of the optical regions 321 having at least two respective optical states, and the display backlight is different in different optical states. The number of the optical regions 321 can be set to be any number based on the requirement, and the greater the number of the optical regions 321, the higher the accuracy of the local backlight adjustment.

The display assembly 33 includes an array of display elements disposed within an illumination range of the display backlight. The display element array has a plurality of display elements 331 arranged in an array. Each of the optical regions 321 corresponds to at least 1 display element 331, and the optical regions 321 may be disposed to correspond to a plurality of display elements 331. The display element array is used for being in a corresponding display state according to display content, and the display backlight can form a visually perceived image through the display element array.

In the embodiment of the present application, the display assembly 33 is a liquid crystal panel, and includes three display elements 331, which are a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. In the embodiment of the present application, only the liquid crystal panel for RGB display is taken as an example for description, and the arrangement of the sub-pixels is not limited to the arrangement shown in fig. 5, and may be other arrangements.

The temperature component 34 is used to influence the temperature of the optical component 32; wherein the switching speed of the optical states is different at different temperatures.

In the display device according to the embodiment of the present application, the display device has the optical assembly 32, the optical assembly 32 includes at least two optical regions 321, each of the optical regions 321 has at least two respective optical states, and the display backlight is different in the different optical states, so that the region adjustment of the display backlight can be realized without changing the backlight assembly 31, and the improvement of the light source device and the driving circuit thereof in the backlight assembly 31 is not required, and the scheme is simple and the manufacturing cost is low. Moreover, the display device is further provided with a temperature component 34 for influencing the temperature of the optical component 32 to regulate and control the switching speed of the optical state of the optical component 32, so that the optical state of the optical component 32 has a faster switching speed at different environmental temperatures.

As shown in fig. 6, fig. 6 is a cross-sectional view of an optical assembly according to an embodiment of the present disclosure, where the optical assembly 33 may be an electrically controlled liquid crystal film, and the electrically controlled liquid crystal film includes: a first flexible substrate 41 and a second flexible substrate 42 disposed opposite to each other, and a liquid crystal layer 43 between the first flexible substrate 41 and the second flexible substrate 42. The first flexible substrate 41 and the second flexible substrate 42 may be a PET (polyethylene terephthalate) film or a PI (polyimide) film, and the liquid crystal layer 43 may be a bistable liquid crystal or a polymer liquid crystal (PDLC).

The surface of the first flexible substrate 41 is provided with a first driving electrode 44, the surface of the second flexible substrate 42 is provided with a second driving electrode 45, and the first driving electrode 44 and the second driving electrode 45 input control voltage to form an electric field capable of controlling liquid crystal molecule deflection, so that the liquid crystal molecule deflection is adjusted, the display backlight of each optical area 321 is adjusted, and the local backlight adjustment is realized.

The first driving electrode 44 may be disposed on a side surface of the first flexible substrate 41 facing away from the liquid crystal layer 43, and the second driving electrode 45 may be disposed on a side surface of the second flexible substrate 42 facing away from the liquid crystal layer 43, so as to ensure flatness of the side facing the liquid crystal layer 43 and facilitate disposing of the liquid crystal layer 43. In another embodiment, the first driving electrode 44 may be provided on the first flexible substrate 41 facing the liquid crystal layer 43, and the second driving electrode 45 may be provided on the second flexible substrate 43 facing the liquid crystal layer 43.

As shown in fig. 4 and fig. 6, in the optical assembly 32, each of the optical regions 321 is provided with at least one first driving electrode 44 and at least one second driving electrode 45, and the first driving electrodes 44 and the second driving electrodes 45 are arranged in a one-to-one correspondence. In different optical regions 321, the first driving electrodes 44 are disposed independently, and the second driving electrodes 45 are disposed independently, so that each optical region 321 can independently input a control voltage, and local backlight adjustment is achieved. The first driving electrode 44 and the second driving electrode 45 may be transparent electrodes, such as ITO electrodes. For any optical region 321, which has different deflection states corresponding to different control voltages input by the first driving electrode 44 and the second driving electrode 45 and different directions and/or numbers of emergent light rays, the display backlight output by the optical region 321 based on the initial backlight conversion is different, and has different optical states.

If the first optical area and the second optical area are set as two different optical areas 321, although the initial backlights emitted from different areas of the backlight assembly 31 satisfy the same condition, that is, the initial backlights incident from the first optical area and the second optical area are the same, the control voltages input by the first driving electrode 44 and the second driving electrode 45 in the first optical area and the second optical area may be set to be different based on the requirement, so that the display backlights output from the first optical area and the second optical area are different, and if the control voltages input by the first driving electrode 44 and the second driving electrode 45 in the first optical area and the second optical area are the same, the display backlights output from the first optical area and the second optical area are the same.

As shown in fig. 7, fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application, and based on the foregoing embodiment, with reference to fig. 3, fig. 4, and fig. 7, the display device includes: the backlight assembly 31, the optical assembly 32, the display assembly 33, and the temperature assembly 34, and further includes a control assembly 35.

The control component 35 is connected to the optical component 32 and the display component 33, and the control component 35 is configured to control an optical state of each optical area 321 of the optical component 32, so that the display backlight and the display content of each optical area 321 are matched. The control component 35 may be configured to control the brightness of the backlight emitted from each optical area 321 to match the brightness of the displayed content by controlling the control voltage in each optical area 321, for example, when the local image in the display component 33 corresponding to the first optical area has a larger brightness relative to the local image in the display component 33 corresponding to the second optical area, the control component 35 controls the first optical area to emit the backlight with a larger brightness and controls the second optical area to emit the backlight with a smaller brightness.

The control component 35 is further configured to provide data signals to the display component 33 based on the displayed content, and drive the display element array to display an image. The control component 35 is an IC (integrated circuit chip).

The control component 35 is further connected to the backlight component 34, and the control component 35 is further configured to control the driving current of the backlight component 31, so as to integrally adjust the brightness of the initial backlight emitted by the backlight component 31. The luminance of the initial backlight emitted from the backlight assembly 31 is different at different driving currents. The brightness of the initial backlight emitted from different areas of the backlight assembly 31 is the same at the same driving current.

The control component 35 is further connected to the temperature component 34, and the control component 35 is further configured to provide a heating driving signal for the temperature component 34 to control the temperature of the temperature component.

The structure of the temperature assembly 34 described above may be as shown in fig. 8.

As shown in fig. 8, fig. 8 is a schematic structural diagram of a temperature component according to an embodiment of the present application, where the temperature component 34 includes: a substrate 41 and a heat generating member 42 disposed on the substrate 41, the heat generating member 42 being capable of generating heat based on power consumption. The light transmittance of the temperature component 34 is sufficient to form the visually perceptible image. Wherein the temperature component 34 is attached to any one of the display component 33, the optical component 32 and the backlight component 31. The temperature component 34 has a larger light transmittance to ensure that the display backlight has a larger transmittance, and ensure the image display effect of the display component 33. At this time, the temperature member 34 is separately prepared and is attached to any one surface of the display member 33, the optical member 32 and the backlight member 31. In the embodiment of the application, the bonding fixation can be realized through Optical Cement (OCA).

With reference to fig. 3 and 8, when the temperature component 34 is disposed on the display component 33, a separate substrate 41 is used for carrying the heating element 42 to form the temperature component 34, and the temperature component 34 is disposed on a side surface of the display component 33 facing the optical component 32, so as to heat the optical component 32 more efficiently; the temperature assembly 34 and the display assembly 33 can be attached and fixed by optical cement.

Referring to fig. 3 and 8, when the temperature component 34 is disposed on the optical component 32, a separate substrate 41 is used for carrying the heating element 42 to form the temperature component 34, and the temperature component 34 is disposed on the surface of the optical component 32, and may be disposed on the surface of the optical component 32 facing the display component 33 or the surface facing the backlight component 31; the temperature assembly 34 and the optical assembly 32 can be attached and fixed by using optical cement.

Referring to fig. 3 and 8, when the temperature assembly 34 is disposed on the backlight assembly 31, a separate substrate 41 is used for carrying the heat generating element 42 to form the temperature assembly 34, and the temperature assembly 34 is disposed on a surface of the backlight assembly 31 facing the optical assembly 32 to heat the optical assembly 32 more efficiently, in which the temperature assembly 34 and the backlight assembly 31 can be attached and fixed by using optical adhesive.

The temperature component 34 can also be provided to include a heat generating element that can generate heat based on electrical energy consumption; wherein the heat generating member is disposed on at least one of the display assembly 33, the optical assembly 32 and the backlight assembly 31. In this case, the substrate in the embodiment shown in fig. 8 need not be separately provided. In this manner, the display module 33 can be reused as the substrate 41, the heat generating member 42 can be disposed on the surface of the display module 33 facing the optical module 32 to heat the optical module 32 more efficiently, and the heat generating member 42 can be formed on the surface of the display module 33 facing the optical module 32 by electroplating or deposition; multiplexing the optical assembly 32 as the substrate 41, and disposing the heat generating member 42 on the surface of the optical assembly 32, wherein the heat generating member 42 can be formed on the surface of the optical assembly 32 by electroplating or deposition process, and the optical member 42 can be the surface facing the display assembly 33 or the surface facing the backlight assembly 31; the backlight assembly 31 is reused as the substrate 41, and the heat generating member 42 is disposed on a surface of the backlight assembly 31 facing the optical assembly 32 to heat the optical assembly 32 more efficiently, in which the heat generating member 42 can be formed on a surface of the backlight assembly 31 facing the optical assembly 32 by a plating or deposition process.

In the embodiment of the present application, the heat generating member is disposed on at least one of the display assembly 33, the optical assembly 32 and the backlight assembly 31, and includes: at least one of the display assembly 33, the optical assembly 32 and the backlight assembly 31 has a heat generating member.

In the embodiment of the present application, the heat generating member is disposed on at least one of the display assembly 33, the optical assembly 32 and the backlight assembly 31, and includes at least one of the following three ways:

first, the heat generating component in the backlight assembly 31 has a first set of electrodes, which can also be used to realize a first function.

In the first mode, the heat generating element in the backlight assembly 31 is not only used as the heat generating element in the temperature assembly 34 for generating heat based on power consumption, but also used for implementing the first function, which includes improving the emission intensity of the initial backlight. As described, the backlight assembly 31 has a reflective layer for reflecting the original backlight emitted from the display assembly 33, so as to improve the utilization of the original backlight. At this time, the reflective layer may be provided to include a metal layer, and the metal layer may also be utilized as a heat generating member in the temperature assembly 34. Wherein the first set of electrodes includes the reflective layer.

In a second manner, the heat generating component in the optical assembly 32 has a second set of electrodes, which is also used to implement a second function.

In the second way, the heat generating element in the optical component 32 is not only used as the heat generating element in the temperature component 34 for generating heat based on the power consumption, but also used for implementing a second function, which includes controlling the optical state of the optical area 321 in the optical component 32. As described above, the optical assembly 32 has the first driving electrode 44 and the second driving electrode 45 for inputting the control voltage, and if the control voltage is different, the optical assembly 32 has different optical states, and the output display backlight is different. At this time, the first driving electrode 44 and/or the second driving electrode 45 may be provided as a heat generating member of the temperature component 34. Wherein the second set of electrodes comprises the first drive electrode 44 and/or the second drive electrode 45.

In the second mode, the heating member can be used to heat the substrate to a desired temperature, and then the heating member is used to realize the second function. For example, when the display device is powered on and started, the heating condition is determined to be satisfied, the heating piece is used for heating before entering the system desktop, and the heating piece is used for executing the second function after the display device is powered on.

In a third way, the heat generating component in the display module 33 has a third set of electrodes, and the third set of electrodes is also used for realizing a third function.

In a third mode, the heat generating member in the display module 33 is not only used as the heat generating member in the temperature module 34 for generating heat based on power consumption, but also used for implementing a third function including forming a visually perceivable image or a touch detection function. In this way, the third function can be realized by the heating member after the heating member is heated to the required temperature.

For example, when the display device is powered on and started, it is determined that the heating condition is satisfied, before entering the system desktop, the heating member is used for heating in the power-on detection time period, and after the system desktop is powered on, the heating member is used for executing the third function.

The display assembly 33 includes a pixel electrode and a common electrode for causing the display assembly 33 to form a visually perceptible image. When the third function includes forming a visually perceptible image, the pixel electrode and/or the common electrode are utilized as heat generating members in the temperature assembly 34. Wherein the third set of electrodes comprises pixel electrodes and/or common electrodes. For example, when the display device is powered on and started, it is determined that the heating condition is satisfied, heating is performed by the heating member using the power-on detection period before entering the system desktop, and after the system is powered on, the function of forming an image is performed by the heating member.

The display device 33 includes a touch electrode for enabling the display device 33 to have a touch detection function. When the third function includes a touch detection function, the touch electrode is used as a heat generating member of the temperature device 34. Wherein the third set of electrodes comprises touch electrodes.

The touch electrode is provided with a first type signal end and a second type signal end. The first-class signal terminal is used for inputting a touch driving signal for the touch electrode and outputting a touch detection signal output by the touch electrode, and is used for realizing touch detection. The second signal terminal is used for inputting a heating driving signal, so that a larger current is formed in the touch electrode, and the touch electrode consumes electric energy and generates heat. When the heating condition is met, a heating driving signal is input for the touch electrode through the second signal terminal, the heating function is realized through the touch electrode, the first signal input terminal is closed, and touch detection is not executed by the touch electrode at the moment. When the heating condition is not met, a touch driving signal is input to the touch electrode through the first signal end, a touch detection signal output by the touch electrode is obtained to realize touch detection, the second signal end is closed, and the touch electrode does not execute a heating function at the moment.

For example, when the display device is started, it is determined that the heating condition is satisfied, before entering the system desktop, the heating member is used for heating in the starting detection time period, and after the system desktop is started, the heating member is used for executing the touch detection function. Or after the display device is started, determining that the heating condition is met, heating the display device through the heating piece, closing the touch detection function of the display device, and closing the heating function of the display device when the heating condition is not met for executing the touch detection function.

As can be seen from the above description, in the embodiment of the present application, the temperature component 34 includes a heat generating member, and the heat generating member is not only used for generating heat based on power consumption, but also used for implementing a predetermined function. The functions include the first, second, and third functions described above.

At this moment, after the heating part is heated to the required temperature, the heating part is utilized to realize the preset function, and the method comprises the following two schemes:

according to the first scheme, when the display device is started, the display device is determined to meet the heating condition, before entering a system desktop, the display device is heated by the heating piece in the starting detection time period, and after the display device is started, the heating piece is used for executing the preset function. In the scheme, the heating is carried out by utilizing the startup detection time interval, so that the influence on the switching speed of the optical state of the optical component 32 due to too low temperature after the startup is avoided, the normal operation of the display equipment at the initial stage after the startup is ensured, and after the startup is operated and the display equipment is normally operated, various electronic components work to generate heat, so that the optical component 32 can be ensured to normally operate at a lower environmental temperature in the subsequent time interval.

According to the second scheme, in the process of displaying the image, after the heating condition is determined to be met, the heating piece is used for heating, after the required temperature is reached, the heating piece is used for executing the preset function, and before the required temperature is reached, the preset function is not executed.

In the second scheme, the display device can be set to have at least two display modes, including: a first display mode and a second display mode. The first display mode requires area backlight adjustment and the second display mode does not require area backlight adjustment. When the heating condition is satisfied, the second display mode is executed by heating the heating member, and the transmittance of all the optical regions 321 in the optical assembly 32 is the same, such as the maximum transmittance, the minimum transmittance, or other predetermined transmittance. And when the heating condition is determined not to be met, the heating function of the heating member is closed, and the first display mode is executed. The mode carries out display transition through a second display mode without regional backlight adjustment, and in the display transition stage, the heating piece is used for heating, and when the required temperature is reached, the first display mode is switched to, so that in the first display mode, the optical state is switched at the required temperature.

In the second scheme, the display device can also be set to only have the first display mode, the display mode needs regional backlight adjustment, when the heating condition is determined to be met, the heating is carried out through the heating piece, and when the heating condition is determined not to be met, the heating function of the heating piece is turned off. In this scheme, need not the display mode switching, when satisfying the heating condition, heat through the piece that generates heat, in this mode before heating to required temperature, although the switching speed of optical state is not enough to a certain extent, can make the display device be in first kind display mode all the time.

As described above, in the embodiment of the present application, the temperature component 34 includes a heat generating member, which can generate heat based on power consumption;

in one mode, the heat generating member is made of a conductive material with a light transmittance greater than a first threshold, and a coverage rate of the heat generating member on the optical assembly 32 is not less than a first ratio. In this mode, the heat generating member is a planar transparent electrode, such as an ITO electrode. The first threshold is not less than 70%, and the first threshold may be set based on the demand, or may be not less than 80%. The first ratio is not less than 80%, and the first ratio may be set based on the demand, or may be not less than 90%. In this way, the heat generating member is block-shaped due to its high transmittance, and completely covers one or more of the optical regions 321.

In another mode, the heat generating member is made of a conductive material with a light transmittance smaller than a second threshold, and a coverage rate of the heat generating member on the optical component 32 is smaller than a second ratio; the first threshold is greater than the second threshold, and the first ratio is greater than the second ratio. In this mode, the heating member is a metal mesh electrode. The first threshold value is not more than 5%, the metal material is light-tight, and the transmittance of the metal material is low, so that the integral transmittance can be realized through the metal grid, and the display backlight has high transmittance. The second proportion is not more than 40%, and the second proportion can be set based on the demand, also can be not more than 20%, and the smaller the second proportion, the bigger the hollow area in the metal grid is, the better the light transmissivity is.

Based on the manner shown in fig. 3, in another manner, the display device further includes: the temperature acquisition component is used for acquiring the temperature information of the optical component 32, and the control component is used for controlling the working state of the temperature component based on the temperature information.

As shown in fig. 9, fig. 9 is a top view of a temperature component 34 provided in an embodiment of the present application, where the temperature component 34 includes a plurality of temperature regions 341, where the temperature regions 341 cover at least one of the optical regions 321, and different temperature regions 341 cover different optical regions 321. Thus, the different temperature regions 341 can achieve independent temperature adjustment of the different optical regions 321 in the optical assembly 32. The number of temperature zones 34 may be set based on demand, such as 4 or 6. A temperature acquisition assembly is provided for acquiring temperature information of the optical assembly 32. When there are a plurality of temperature regions 341, there are a plurality of temperature acquisition components corresponding to the temperature regions 341 one to one, and configured to acquire temperature information of the optical region 321 covered by the temperature regions 341. The temperature acquisition assembly is arranged at the edge of the optical assembly 32 to avoid affecting the light transmittance. Wherein, the temperature acquisition component can be a temperature sensor.

The plurality of temperature regions 341 are arranged in an mxn array, where M and N are positive integers, and at least one is greater than 1. At least one of M and N may be set to be not more than 2, such as to enable each temperature region 341 to correspond to an edge portion of the optical component 32, so that the temperature acquisition component corresponding to the temperature region 341 can be disposed at the edge of the optical component 32.

The temperature acquisition assembly can also be arranged outside the display equipment and used for acquiring the ambient temperature so as to quickly respond to the external temperature change.

In the embodiment of the application, the optical state switching of the optical assembly 32 can be carried out at a proper temperature, the switching speed of the optical assembly is ensured, the image display quality is ensured, the backlight assembly is not required to have an area backlight adjusting function, the structure is simple, the manufacturing cost is low, the scheme that the high voltage is required to ensure the optical state switching speed of the electric control liquid crystal film at a low ambient temperature is avoided, the working voltage and the power consumption are reduced, and the safety and the reliability are improved.

The display device can be an all-in-one computer, a notebook computer, a display screen, a mobile phone or an intelligent wearable device and other electronic devices with a display function.

Based on the foregoing embodiment, another embodiment of the present application further provides a control method, which is used for the display device described in the foregoing embodiment, where the control method is shown in fig. 10, and fig. 10 is a schematic flow diagram of the control method provided in the embodiment of the present application, and the control method includes:

step S11: the temperature of the optical assembly is affected by adjusting the temperature assembly in response to the temperature adjustment command.

The optical assembly is arranged in the irradiation range of initial backlight emitted by the backlight assembly and used for forming display backlight according to the initial backlight; wherein the optical assembly comprises at least 2 optical zones, each of the optical zones having a respective at least two optical states, the display backlight being different in the different optical states;

step S12: controlling the optical state of each optical region of the optical assembly such that the display backlight and the display content of each optical region match;

step S13: and controlling the display element array in the display assembly to be in a corresponding display state according to the display content.

Wherein the display array is disposed within an illumination range of the display backlight, the display backlight being capable of forming a visually perceptible image by the array of display elements.

In the control method of the present application, as shown in fig. 11, fig. 11 is a schematic flowchart of a method for adjusting the temperature component according to an embodiment of the present application, where the method includes:

step S21: temperature information of the optical assembly is acquired.

Temperature information of the optical assembly may be determined based on a temperature acquisition assembly disposed in the display device. The temperature acquisition assembly can be arranged at the edge of the optical assembly to avoid influencing the light transmittance and better monitor the temperature information of the optical assembly. One or more temperature acquisition assemblies may be provided. When having a plurality of temperature acquisition subassemblies, a plurality of temperature acquisition subassemblies are used for detecting the temperature information of different optical zone, temperature zone one-to-one in temperature acquisition subassembly and the temperature subassembly, and the temperature information control that different temperature zones gathered based on the temperature acquisition subassembly that corresponds is generated heat and is opened or close.

Step S22: controlling the temperature component to be turned on or off based on the temperature information.

In the control method of the present application, the method for controlling the temperature component to be turned on or off includes:

wherein the first set threshold is less than the second set threshold. And when the temperature information is less than the first temperature threshold value and meets the heating condition, controlling the temperature assembly to be started, and when the temperature information is greater than the second temperature threshold value and does not meet the heating condition, controlling the temperature assembly to be stopped. The first temperature threshold may be 0 ℃, or-50 ℃, etc., and is set based on the material characteristics of the optical component, which is not particularly limited in the embodiments of the present application.

The control method can be realized by the display device of the above embodiment, and the optical state switching of the optical component is performed at a required temperature while the regional backlight adjustment is realized, so that the switching speed is ensured, and further, the image display effect, such as the display effect in HDR, is ensured.

Based on the foregoing embodiment, another embodiment of the present application further provides an optical module, where the optical module is shown in fig. 12, and fig. 12 is a schematic structural diagram of the optical module provided in the embodiment of the present application, and the optical module includes:

a functional component 51, the functional component 51 being disposed within an illumination range of the initial backlight, for forming a target light set based on the initial backlight; wherein the functional component 51 comprises at least 2 segments, each segment having at least two respective optical states, the set of target rays being different in the different optical states;

a temperature component 34, the temperature component 34 being used to influence the temperature of the functional component 51; wherein the switching speed of the optical states is different at different temperatures.

In the optical module according to the embodiment of the present application, the functional component 51 may be the optical component according to the above embodiment, in this case, the partition of the functional component 51 is an optical area of the optical component, and the target light is collected as the display backlight. In this way, the optical module may be used to adjust the initial backlight emitted by the backlight module to achieve regional backlight adjustment. The optical module may further include a backlight assembly.

In the optical module according to the embodiment of the present application, the optical component 51 may also be a display component according to the above embodiment, at this time, the partition of the functional component 51 is a display element of the display component, and the target light is a set of emergent light of each display element to form a display image. In this way, the display module is a liquid crystal display module, the refresh frequency is easily affected by temperature, and in a certain temperature range, the lower the temperature is, the slower the response speed is when the liquid crystal deflects, and the lower the refresh frequency is. In the optical module, the display assembly can be heated through the temperature assembly, so that high-refresh-frequency image display in a low-temperature environment is realized.

In the optical module according to the embodiment of the present application, the design scheme of the temperature component is the same as that of the above embodiment, and the implementation scheme may refer to the above description and will not be repeated here.

The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. For the control method and the optical module disclosed by the embodiment, since the control method and the optical module correspond to the display device disclosed by the embodiment, the description is relatively simple, and relevant points can be referred to the description of the corresponding part of the display device.

It should be noted that in the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an 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 article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display device, comprising:

2. The display device of claim 1, further comprising:

3. The display device of claim 1, further comprising:

4. The display device of claim 1, wherein the temperature component comprises: the heating device comprises a substrate and a heating piece arranged on the substrate, wherein the heating piece can generate heat based on electric energy consumption;

5. The display device according to claim 1, the temperature component comprising a heat generating member capable of generating heat based on consumption of electric power;

6. The display device according to claim 1, the temperature component comprising a heat generating member capable of generating heat based on consumption of electric power;

7. The display device of any of claims 1-6, the temperature component comprising a plurality of temperature zones, the temperature zones covering at least one of the optical zones, different ones of the temperature zones covering different ones of the optical zones.

8. A control method, comprising:

9. The control method of claim 8, the method of adjusting the temperature component comprising:

acquiring temperature information of the optical assembly;

wherein the first set threshold is less than the second set threshold.

10. An optical module, comprising: