CN210984241U - Liquid crystal module - Google Patents
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- CN210984241U CN210984241U CN201922231510.0U CN201922231510U CN210984241U CN 210984241 U CN210984241 U CN 210984241U CN 201922231510 U CN201922231510 U CN 201922231510U CN 210984241 U CN210984241 U CN 210984241U
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Abstract
The utility model provides a liquid crystal module, including at least one the control unit and at least a set of backlight source subassembly, the control unit and backlight source subassembly are connected in pairs, and the control unit includes: the environment light acquisition module is used for acquiring the light intensity of external environment light and converting the light intensity into an electric signal; the backlight source assembly comprises a plurality of light-emitting elements, a brightness adjusting module and a control module, wherein the light-emitting elements are used for receiving control signals from the corresponding brightness adjusting module and entering corresponding working states according to the control signals, and the working states comprise: the light emitting device includes a first operating state in which all of the light emitting elements emit light at full power, a second operating state in which all of the light emitting elements do not emit light, and a third operating state in which the light emitting elements emit light at partial power. The utility model discloses effectively reduced the high bright module consumption when the low bright state uses, improved backlight source's life.
Description
Technical Field
The utility model relates to a liquid crystal display technology field, in particular to compromise liquid crystal module that super high brightness shows and ultralow brightness shows.
Background
Liquid crystal is an organic high molecular material with properties between those of liquid and crystal, and has both liquid fluidity and ordering of crystal structure arrangement. The liquid crystal has a crystal structure at a low temperature, becomes liquid at a high temperature, and exists in a liquid crystal form at an intermediate temperature. With the rapid development of science and technology, people have more and more interest in developing liquid crystal materials. The demand of the world market for liquid crystal displays is increasing, and more liquid crystal displays and liquid crystal televisions are entering daily office and life.
At present, the high brightness of the display module sold in the market can reach 1200 cd/square meter and even more than 1500 cd/square meter. These display modules control the display brightness in a self-adaptive or manual manner. However, in the prior art, if a requirement is provided for a display module having a luminance that satisfies at most 600 cd/square meter or more, the display module can adapt to the ambient light conditions and stably display image information with a luminance of 50 cd/square meter or less, and the display module has unacceptable defects such as flickering of a picture and serious uneven luminance.
Therefore, there is a need for a liquid crystal display module that satisfies the need for stable display at high brightness and also ultra-low brightness in dark fields.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a LCD module with adjustable luminance for solve above-mentioned at leastThe following are set forth: 1) the prior art can only ensure the display to display in a stable state within a certain brightness range, but can not give consideration to both ultra-bright display and ultra-low-bright stable display; 2) the surface brightness of a black screen picture in a dark field environment is difficult to be lower than 0.1cd/m in the prior art2To a problem of (a).
The utility model provides a liquid crystal module, which comprises a control device and a light-emitting device, wherein the control device comprises at least one control unit, the light-emitting device comprises at least one group of backlight source components, the control unit and the backlight source components are connected in pairs,
the control unit includes:
the environment light acquisition module is used for acquiring the light intensity of external environment light and converting the light intensity into an electric signal;
a brightness adjusting module for receiving the electrical signal from the ambient light collecting module and generating a control signal based on at least the electrical signal and a preset signal value,
the control device also comprises an additional control unit, wherein the additional control unit comprises an additional brightness adjusting module, and the additional brightness adjusting module is connected with one of the ambient light collecting modules; the lighting device further comprises a set of additional backlight source assemblies, the additional control unit is connected with the additional backlight source assemblies,
the backlight source assembly and the additional backlight source assembly comprise a plurality of light-emitting elements for receiving control signals from corresponding brightness adjusting modules and entering corresponding working states according to the control signals,
wherein the operating state comprises: the light emitting device includes a first operating state in which all of the light emitting elements emit light at full power, a second operating state in which all of the light emitting elements do not emit light, and a third operating state in which the light emitting elements emit light at partial power.
The utility model provides a liquid crystal module can adjust the demonstration in order to carry out corresponding luminance according to the intensity of ambient light. Therefore, the device can adapt to the peripheral brightness at any time when a user uses the device, meets the self-adaptive photosensitive requirement, and plays a corresponding role in protecting the eyesight of the user. In addition, through setting up additional the control unit and additional backlight source subassembly, the utility model discloses can show the hi-lite under bright stronger environment, need not other extra measures, just can show super low-luminance under darker environment with a simple convenient mode. Because the working state of the light-emitting element in the backlight light source module comprises light emission under partial power, the low-brightness display can be carried out in a corresponding numerical range instead of only displaying according to a certain preset brightness value.
In some embodiments, the brightness adjusting module includes a power adjusting component and a switch, the electric signal and a preset signal value generate a switch operation signal after passing through the power adjusting component, and the brightness adjusting module is configured to control a conducting state of the switch based on the switch operation signal and generate the control signal.
In some embodiments, the power adjustment component comprises an operational amplifier.
In some embodiments, the preset signal value in each control unit is different and is associated with the turn-on voltage value of the switch in that control unit such that:
when the switch operation signal value is smaller than the conduction voltage value of the switch, the power supply corresponding to the backlight light source assembly is cut off, so that the backlight light source assembly is in a second working state;
when the switch operation signal value is larger than the conduction voltage value of the switch and smaller than the threshold voltage value, the corresponding backlight light source component is in a third working state;
when the switch operation signal value is larger than the threshold voltage value of the switch, the corresponding backlight light source component is in a first working state.
In the liquid crystal module, the collected signal of the ambient light is used for simultaneously controlling two paths of or even multiple paths of light-emitting devices; further, multiple light emitting devices may be controlled in steps by the same signal.
In some embodiments, the switch is a power MOS transistor.
In some embodiments, the additional brightness adjustment module comprises a signal amplifier.
In some embodiments, the control device comprises one control unit and one additional control unit, and the light-emitting device comprises a set of backlight source assemblies and a set of additional backlight source assemblies.
In some embodiments, the light-emitting elements in the at least one set of backlight source assemblies and the additional backlight source assemblies are of the same type.
In some embodiments, the ratio of the number of light-emitting elements in the backlight source assembly and the additional backlight source assembly is greater than 1: 1.
In some embodiments, the ratio of the number of light-emitting elements in the backlight source assembly to the additional backlight source assembly is 2: 1.
In some embodiments, the ambient light collection module comprises a photoresistor.
In some embodiments, the control device comprises two or more control units, and the light-emitting device comprises two or more sets of backlight light source assemblies. The conduction voltage of the power adjusting component in each control unit is different. Preferably, when the photoresistor is connected to the positive terminal of the power supply and to the positive terminal of the power adjustment component, the additional brightness adjustment device in the additional control unit is connected to the ambient light collection module in the control unit where the power adjustment component with the minimum on-voltage is located.
The utility model discloses effectively reduced the high bright module consumption when the low bright state uses, improved backlight source's life. And simultaneously, the utility model provides the high luminance adaptability of product, the cost that the product manufacture increases is little, does not also increase the technology degree of difficulty of manufacturing, consequently can ensure that the reliability of product is unchangeable. Furthermore, according to the utility model discloses the liquid crystal module of making can not produce new environmental pollution problem.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a logic structure of a liquid crystal module according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a control device of a liquid crystal module according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a light emitting device of a liquid crystal module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a light emitting device of a liquid crystal module according to another embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a control device of a liquid crystal module according to another embodiment of the present invention;
fig. 6 is a flowchart illustrating a backlight brightness control method of a liquid crystal module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
It is further noted that, herein, relational terms such as "first" and "second," "additional," 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 a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
As shown in fig. 1, according to an embodiment of the present invention, the liquid crystal module comprises a control device 10 and a light emitting device 20, the control device 10 comprises a plurality of control units 11 and an additional control unit 12, the light emitting device comprises n sets of backlight source assemblies L1, L2 … … L n and an additional set of backlight source assemblies L0, wherein n is greater than or equal to 1 and is an integer, the control unit 11 comprises an ambient light collecting module 111 and a brightness adjusting module 112, wherein:
the ambient light collecting module 111 is used for collecting the light intensity of external ambient light and converting the light intensity into a corresponding electrical signal;
the brightness adjusting module 112 is configured to receive the electrical signal from the ambient light collecting module 111, and generate a control signal based on the electrical signal and a preset signal value;
backlight source assemblies L1, L2 … … L n for receiving control signals from the brightness adjustment device 112 and determining their own operation states according to the control signals;
the additional control unit 12 comprises an additional brightness adjustment module 121, an input of the additional brightness adjustment module 121 being connected to an output of one of the ambient light collection modules 111, an input of the additional backlight source assembly L0 being connected to an output of the additional brightness adjustment module 121.
The above-mentioned working condition includes: the backlight module includes a first operating state in which all of the light-emitting elements in the backlight assembly (including the additional backlight assembly) emit light, a second operating state in which all of the light-emitting elements in the backlight assembly do not emit light, and a third operating state in which some of the light-emitting elements in the backlight assembly emit light.
The present invention will be further described below with reference to specific examples.
Fig. 2 and 3 are schematic circuit diagrams of a control device and a light emitting device of a liquid crystal module according to an embodiment of the present invention, respectively. It should be noted that the connecting leads between the devices are indicated by solid lines in the circuit diagram. A dot is arranged at the intersection of the two leads and indicates that the two leads are connected together; the intersection of the two conducting wires has no round point, or one of the lines is changed from a straight line to an arc line, which indicates that the two conducting wires are not connected.
In this example, the number of the control units is one, and accordingly, the number of the backlight assembly is also one group. Hereinafter, for clarity, the backlight assembly is referred to as a lamp set 1, and the additional backlight assembly is referred to as a lamp set 2.
As shown in FIG. 2, in this example, the liquid crystal module passes through a photoresistor RLThe light intensity of the ambient light is collected. In a control unit corresponding to the lamp group 1, a light dependent resistor RLThe resistor R1 is connected with the preset resistor R1 in series and is grounded. Photoresistor R after series connectionLAnd the resistor R1 is connected in parallel with the preset resistors R2 and R3 which are connected in series.
Photoresistor RLAnd the common end of the preset resistor R1 is connected to the signal input ends of the operational amplifiers U1 and U2 simultaneously. The other input terminal of the operational amplifier U1 is connected to the common terminal of the resistors R2 and R3. In addition, the preset resistors R5 and R6 are connected in series, and the resistors R5 and R6 which are connected in series are connected in parallel with the resistor R3. The output terminal of the operational amplifier U1 is connected to the switching circuit Q1 and to the resistor R4 connected to ground. In this example, the switching circuit is a power MOS transistor.
Photoresistor RLThe collected light intensity of the ambient light is output as a voltage value, the voltage value and the voltage across the preset resistor R2 are calculated by the operational amplifier U1, and if the output signal (for convenience, referred to as "switching operation signal") is greater than the on-state voltage of the switching circuit Q1, the MOS transistor Q1 is turned on, and the current flows to the output terminal a of the control unit (i.e., the input terminal of the lamp set 1) through the MOS transistor. If the signal value of the switching operation signal is smaller than the turn-on voltage of the switching circuit Q1, that is, the switching operation signal is not enough to turn on the MOS transistor Q1, the output of the switching transistor is almost negligible. No current flows to the output a of the control unit and thus the light emitting elements of the set 1 do not emit light. When equivalent to this, generateAnd (3) a control signal that all the light-emitting elements of the lamp group 1 do not emit light. When the switch operation signal value is greater than the on-voltage value of the switch and less than the threshold voltage value, the power of the light-emitting elements in the corresponding backlight source assembly is increased along with the increase of the switch operation signal value, so that the brightness of the single light-emitting element is increased. When the value of the switch operation signal is greater than the on-voltage of the switch circuit Q1 and greater than the threshold voltage value of the switch, the light-emitting elements corresponding to the backlight source assembly emit light at full power.
The lamp group 2 serves as an additional backlight source component, and the control unit of the lamp group is an additional control unit. The input end of the brightness adjusting module in the additional control unit and the photoresistor RLAnd a predetermined resistance R1Are connected. The input of the additional brightness adjustment module is also one of the inputs of the signal amplifier U2. The other input terminal of the signal amplifier U2 is connected to the common terminal of the preset resistor R5 and the preset resistor R6. The output terminal of the signal amplifier U2 is connected to the gate of the switching circuit Q2 and to the preset resistor R7. Resistor R7 is connected to ground. It should be noted that specific resistance values of the resistors R1 to R7 may be set according to actual requirements. In this example, the switching circuit is a power MOS transistor.
In the above embodiment, the operation result of the electrical signal converted from the collected ambient light intensity and the preset signal in the brightness adjusting module and the additional brightness adjusting module is performed by the operational amplifier. It should be understood by those skilled in the art that other devices or components (modules) may be used as long as the devices or components (e.g., a combination of a plurality of operational amplifiers) can control the conducting state of the switch circuit through their own structures and corresponding controls to achieve power adjustment of the light emitting elements in the lamp set, thereby achieving the same effect as the operational amplifier U1 in the above-described embodiment. The present invention is not limited thereto.
Because the sensor of gathering ambient light, the signal of telecommunication that generates under the low light environment is relatively weak, in order to ensure the reliable and stable of control, in the control circuit of banks 2, can increase one-level signal amplification circuit, specific amplification ratio can set up as required, for example can be 10 times.
In the example shown in fig. 2, by means of a photoresistor RLThe intensity of the ambient light is collected, and the control signals are generated after signal processing, so that the light emitting states of the backlight lamp group 1 and the backlight lamp group 2 are respectively controlled. The lamp set 1 may be an intense light source and controlled by a switch: when the lamp set 1 is controlled by the control signal that the lighting state will be lower than the steady lighting requirement, the power supply of the lamp set 1 is automatically cut off, thereby stopping the lighting state.
Therefore, as will be understood by those skilled in the art, in the example, when the ambient light is strong, the first path of backlight source assembly may be kept under the control of the external ambient light, and the second path of backlight source assembly is in the operating state of full power; when the ambient light is weak (according to the set requirement), the first path of backlight source assembly can be closed, and the working state of the second path of backlight source assembly is controlled by the ambient light.
Fig. 3 is a schematic circuit diagram of a light-emitting device of a liquid crystal module according to an embodiment of the present invention, and fig. 4 is a schematic circuit diagram of a light-emitting device of a liquid crystal module according to another embodiment of the present invention. The examples shown in fig. 3 and 4 correspond to the example in fig. 2.
The light emitting elements of the light emitting device may be light emitting diodes, i.e., L ED, as shown in fig. 3 and 4, the specific number of light emitting elements may be set according to the respective requirements, and the design is omitted by the bent lines.
In addition, specifically to the example of fig. 2, the lamp beads of the lamp group 1 and the lamp group 2 may be of the same type or may be different, but the number ratio thereof should be greater than 1: 1. Therefore, the ratio of lamp group 1 to lamp group two can be 1:1 (fig. 3), 2:1 (fig. 4), and so on.
When the number of the control units is multiple, the resistance values of the preset resistors in each control unit are different, and the conduction voltages of the switch tubes are also different. The distribution of the resistance value of the preset resistor and the conduction voltage value of the switch tube is in a step shape, so that the lamp group corresponding to each control unit is controlled according to the step. When the voltage value passing through the switch tube is smaller than the threshold voltage value and larger than the conduction voltage value, all the light-emitting elements of the corresponding lamp group are on, but the brightness of the light-emitting elements is increased along with the increase of the power, namely when the ambient light corresponding to the on-light operation signal in the range is changed, the brightness of the light-emitting elements is changed along with the change of the ambient light. When the voltage value passing through the switching tube exceeds the threshold voltage value, the light-emitting elements of the corresponding lamp group should all operate at full power, that is, all emit light at maximum brightness.
For example, in the case where the control units are three (the corresponding lamp groups are lamp group 1 ', lamp group 2', and lamp group 3 ', and the lamp group corresponding to the additional control unit is lamp group 4'), when the ambient light is strongest, it may be necessary that all of lamp group 2 ', lamp group 3', and lamp group 4 'emit light at full power, and the brightness of lamp group 1' is controlled by the ambient light, and if necessary, it may emit light at full power, when the ambient light is second strongest, it may be possible that lamp group 1 'does not need to operate (i.e., L ED lamps do not emit light at all), that lamp group 3', lamp group 4 'emit light at full power, that lamp group 2' is controlled by the ambient light, that when the ambient light is second weakest, it may be possible that all of lamp group 1 ', lamp group 2', and lamp group 3 'do not emit light, and that lamp group 4' is controlled by the ambient light, wherein the (additional) control unit in lamp group 4 'is connected to the brightness adjustment module corresponding to the lamp group 3' in the ambient light collection control unit.
The specific case of circuit connection in the above embodiment can be as shown in fig. 5. In fig. 5, a first lamp set (backlight assembly) is connected to the output terminal a1, a second lamp set is connected to the output terminal a2, a third lamp set is connected to the output terminal a3, and a fourth lamp set (additional backlight assembly) is connected to the output terminal b. The names of all the elements in the first control unit are preceded by "1", the names of all the elements in the second control unit are preceded by "2", and the names of all the elements in the third control unit are preceded by "3" to show the distinction. The ambient light collection modules (in this embodiment, photoresistors) in the first control unit, the second control unit and the third control unit are all connected with a positive end V + of the power supply. The circuit structures of the first control unit, the second control unit and the third control unit are the same as those of the control unit in fig. 2. The present invention will not be described herein.
In fig. 5, the power adjustment element in the brightness adjustment module in the additional control unit is U2, its positive input terminal is connected to the preset resistor R7, and its negative input terminal is connected to the common terminal of the preset resistor R5 and the preset resistor R6. The preset resistor R7 is also connected to the positive input of the operational amplifier 3U1 in the third control unit. The negative input terminal of the operational amplifier 3U1 in the third control unit is also connected to the preset resistor R5 and the preset resistor R6 connected in series. The resistors R5 and R6 after being connected in series are also connected in parallel with the resistor R3. The output terminal of the signal amplifier U2 is connected to the gate of the switching circuit Q2 and to the preset resistor R8. Resistor R8 is connected to ground.
It should be understood that the operating parameters of the power adjusting components in the first control unit, the second control unit and the third control unit are different, so that the lamp group corresponding to each control unit is controlled in a gradient manner. And the specific resistance values of the resistors R1-R8 can be set correspondingly according to actual requirements. In this example, the switching circuit is a power MOS transistor.
In this embodiment, the specific brightness value may be, for example, 1500cd/m when the ambient light is the strongest2Above, when the ambient light is strong, it is 600-1500 cd/m2When the ambient light is weak, the light intensity is 50 to 600cd/m250cd/m when ambient light is the weakest2The following.
It should be understood by those skilled in the art that the specific number thereof should be related to the specific brightness value required to be displayed, i.e. the number of the light emitting elements (e.g. L ED), and the description thereof is omitted herein.
Fig. 6 is a flowchart illustrating a backlight brightness control method of a liquid crystal module according to an embodiment of the present invention. The backlight brightness control method can be executed based on the liquid crystal module in the embodiment of the invention. The flowchart includes steps S01 to S03.
In step S01, the ambient light collection module collects light intensity of external ambient light and converts the light intensity into an electrical signal;
in step S02, the brightness adjustment module and/or the additional brightness adjustment module receives the electrical signal and generates a control signal based on at least the electrical signal and a preset signal value;
in step S03, the backlight assembly and/or the additional backlight assembly receives the control signal and enters a corresponding operating state according to the control signal.
Wherein, operating condition includes: the light emitting device includes a first operating state in which all of the light emitting elements emit light at full power, a second operating state in which all of the light emitting elements do not emit light, and a third operating state in which the light emitting elements emit light at partial power.
In the embodiment shown in fig. 6, the electrical signal and the preset signal value may generate a switch operation signal after passing through the power adjustment component, and the control signal is generated based on the switch operation signal.
In addition, when the switch operation signal value is smaller than the on-state voltage value of the switch, the power supply corresponding to the backlight light source assembly is cut off, so that the backlight light source assembly is in a second working state;
when the switch operation signal value is greater than the conduction voltage value of the switch and less than the threshold voltage value, the corresponding backlight light source component is in a third working state;
when the switch operation signal value is larger than the threshold voltage value of the switch, the corresponding backlight light source component is in a first working state.
The utility model provides an among the prior art can only ensure that the display shows at certain luminance within range steady state, can not compromise super bright demonstration and the bright steady state of ultralow demonstration and prior art and hardly accomplish "dark field environment under the surperficial luminance of black screen picture be less than 0.1cd/m2The technical problem is that the stable display of 5 cd/square meter is ensured while the maximum brightness is not changed; the power consumption of the high-brightness module in the low-brightness state is effectively reduced, and the service life of the backlight source is prolonged. And simultaneously, the utility model provides the high luminance adaptability of product, the cost that the product manufacture increases is little, does not also increase the technology degree of difficulty of manufacturing, consequently can ensure that the reliability of product is unchangeable. Furthermore, according to the utility model discloses the liquid crystal module of making can not produce new environmental pollution problem.
Through the above description of the embodiments, it will be clear to those skilled in the art that the above described embodiments are only illustrative. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A liquid crystal module capable of controlling the backlight brightness comprises a control device and a light-emitting device,
the control device comprises at least one control unit, the light-emitting device comprises at least one group of backlight source components, the control unit and the backlight source components are connected in pairs,
the control unit includes:
the environment light acquisition module is used for acquiring the light intensity of external environment light and converting the light intensity into an electric signal;
a brightness adjusting module for receiving the electrical signal from the ambient light collecting module and generating a control signal based on at least the electrical signal and a preset signal value,
the control device also comprises an additional control unit, wherein the additional control unit comprises an additional brightness adjusting module, and the additional brightness adjusting module is connected with one of the ambient light collecting modules; the lighting device further comprises a set of additional backlight source assemblies, the additional control unit is connected with the additional backlight source assemblies,
the backlight source assembly and the additional backlight source assembly comprise a plurality of light-emitting elements for receiving control signals from corresponding brightness adjusting modules and entering corresponding working states according to the control signals,
wherein the operating state comprises: the light emitting device includes a first operating state in which all of the light emitting elements emit light at full power, a second operating state in which all of the light emitting elements do not emit light, and a third operating state in which the light emitting elements emit light at partial power.
2. The liquid crystal module of claim 1, wherein the brightness adjustment module comprises a power adjustment component and a switch, the electrical signal and a predetermined signal value pass through the power adjustment component to generate a switch operation signal, and the brightness adjustment module is configured to control a conducting state of the switch based on the switch operation signal and generate the control signal.
3. The liquid crystal module of claim 2, wherein the preset signal value in each control unit is different, and the preset signal value in each control unit is associated with the turn-on voltage value of the switch in the control unit, such that:
when the switch operation signal value is smaller than the conduction voltage value of the switch, the power supply corresponding to the backlight light source assembly is cut off, so that the backlight light source assembly is in a second working state;
when the switch operation signal value is larger than the conduction voltage value of the switch and smaller than the threshold voltage value, the corresponding backlight light source component is in a third working state;
when the switch operation signal value is larger than the threshold voltage value of the switch, the corresponding backlight light source component is in a first working state.
4. The liquid crystal module of claim 3, wherein the switch is a power MOS transistor.
5. The liquid crystal module of claim 1, wherein the additional brightness adjustment module comprises a signal amplifier.
6. The liquid crystal module as claimed in claim 1, wherein the control device comprises a control unit and an additional control unit, and the light-emitting device comprises a set of backlight source assemblies and an additional set of backlight source assemblies.
7. The liquid crystal module as set forth in claim 6, wherein the light-emitting elements in the at least one set of backlight source modules and the additional backlight source modules are of the same type.
8. The liquid crystal module as recited in claim 7, wherein the ratio of the number of light-emitting elements in the backlight source assembly to the number of light-emitting elements in the additional backlight source assembly is greater than 1: 1.
9. The liquid crystal module as recited in claim 7, wherein the ratio of the number of light-emitting elements in the backlight assembly to the number of light-emitting elements in the additional backlight assembly is 2: 1.
10. The liquid crystal module of any of claims 1-9, wherein the ambient light collection module comprises a photo resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922231510.0U CN210984241U (en) | 2019-12-12 | 2019-12-12 | Liquid crystal module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922231510.0U CN210984241U (en) | 2019-12-12 | 2019-12-12 | Liquid crystal module |
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| CN210984241U true CN210984241U (en) | 2020-07-10 |
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