CN212009214U - Liquid crystal display capable of adjusting brightness - Google Patents
Liquid crystal display capable of adjusting brightness Download PDFInfo
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- CN212009214U CN212009214U CN202020942863.1U CN202020942863U CN212009214U CN 212009214 U CN212009214 U CN 212009214U CN 202020942863 U CN202020942863 U CN 202020942863U CN 212009214 U CN212009214 U CN 212009214U
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- 230000001105 regulatory effect Effects 0.000 abstract description 2
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- 238000005286 illumination Methods 0.000 description 5
- 239000012788 optical film Substances 0.000 description 5
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- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The utility model provides a liquid crystal display capable of adjusting brightness, which comprises a light-emitting unit; a display unit disposed at a position opposite to the light emitting unit; the temperature monitoring unit is arranged on the display unit and used for monitoring the temperature of the display unit to form a temperature signal; the processing unit is connected with the sensing unit and is used for processing the temperature signal to form an electric signal; and the brightness adjusting unit is connected with the processing unit and the light-emitting unit and adjusts the brightness of the light-emitting unit according to the electric signal. The utility model provides a LCD can the automatically regulated luminance in a poor light, improves life.
Description
Technical Field
The utility model relates to a show technical field, in particular to can adjust LCD of luminance.
Background
The LED display screen belongs to the I/O equipment of a computer, namely input and output equipment, can be divided into a plurality of types such as CRT, LCD and the like, and is a display tool which displays a certain electronic file on a screen through specific transmission equipment and reflects the electronic file to human eyes.
Liquid crystal display keeps under the higher condition of luminance for a long time in the existing market, can produce very high temperature, and the high temperature causes the damage of powerful loss and inside electrical apparatus to the electric quantity of display screen, is unfavorable for keeping the life of whole display screen.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art's defect, the utility model provides a can adjust the LCD of luminance, this LCD can adjust the luminance of display screen according to the temperature of display screen, reduces the high temperature and causes the damage of powerful loss and inside electrical apparatus to the electric quantity of display screen, is favorable to keeping the life of whole display screen.
To achieve the above and other objects, the present invention provides a liquid crystal display capable of adjusting brightness, including,
the shell comprises a bottom plate and a back plate frame, and the bottom plate and the back plate frame are vertically fixed;
the light-emitting unit is arranged on the bottom plate and comprises a light bar and a back plate, the back plate is provided with a containing cavity, and the light bar is arranged in the containing cavity;
the display unit is arranged on the back plate frame and is positioned at the position opposite to the light-emitting unit;
the temperature monitoring unit is arranged on the display unit and used for monitoring the temperature of the display unit to form a temperature signal;
the processing unit is arranged on the back plate frame, is electrically connected with the temperature monitoring unit, and processes the temperature signal to form an electric signal;
and the brightness adjusting unit is arranged on the back plate frame, is electrically connected with the processing unit and the light-emitting unit, and adjusts the brightness of the light-emitting unit according to the electric signal.
Further, the lamp strip includes base plate and LED flip chip, LED flip chip sets up on the base plate.
Further, the lamp strip also comprises a fluorescent glue layer, wherein the fluorescent glue layer is arranged on the substrate and coats the LED flip chip.
Furthermore, a blue light filter plate is arranged on the light-emitting unit.
Further, the processing unit includes a first processing unit and a second processing unit.
Further, the first processing unit is connected with the second processing unit.
Further, the temperature monitoring unit is connected with the first processing unit.
Further, the brightness adjusting unit is connected with the second processing unit.
Further, the temperature monitoring unit is disposed inside the liquid crystal display.
Further, the brightness adjustment unit is disposed inside the liquid crystal display.
To sum up, the utility model provides a liquid crystal display is right through setting up the temperature monitoring unit the temperature of display element is measured to form temperature signal, processing unit will temperature signal converts the signal of telecommunication into, and the luminance regulating unit is adjusted display element's luminance according to the signal of telecommunication, thereby alleviates display element's temperature variation, guarantees that display element's temperature is moderate, thereby has improved whole liquid crystal display life.
Drawings
FIG. 1: the present embodiment provides a schematic diagram of a liquid crystal display.
FIG. 2: fig. 1 is a schematic structural diagram of a light emitting unit.
FIG. 3: FIG. 1 is a schematic diagram of a processing unit.
FIG. 4: another schematic diagram of an lcd in this embodiment is shown.
FIG. 5: a schematic diagram of the tft array substrate in this embodiment is shown.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
As shown in fig. 1, the present embodiment provides a liquid crystal display 100 with adjustable brightness, the liquid crystal display 100 includes a housing 110, a light-emitting unit 120, a display unit 130, a temperature monitoring unit 140, a processing unit 150, and a brightness adjusting unit 160. The light emitting unit 120, the display unit 130, the temperature monitoring unit 140, the processing unit 150, and the brightness adjusting unit 160 are disposed on the housing 110.
As shown in fig. 1, in the present embodiment, the lcd 100 includes a housing 110, and the housing 110 includes a bottom plate 111 and a plurality of back plate frames 112. The bottom plate 111 and the back plate frame 112 may be formed separately, and the material of the bottom plate 111 and the back plate frame 112 may be metal or plastic, for example. The bottom plate 111 and the back plate frame 112 are vertically fixed, in this embodiment, the bottom plate 111 and the back plate frame 112 may be fixed by other methods such as screws, clamping, welding, and the like. In other embodiments, a layer of heat dissipation coating may be coated on the outer surface of the housing 110, and the heat dissipation coating coated on the outer surface of the housing 110 is used to improve the heat dissipation efficiency of the surface of the housing 110, and the heat dissipation coating may be, for example, boron nitride ceramic paint, aluminum nitride ceramic paint, or aluminum oxide ceramic paint. Since the heat dissipation coating is coated on the outer surface of the housing 110, the backlight can directly dissipate heat through the housing 110, and thus, a heat sink is not required, thereby reducing the cost and simplifying the assembly process of the liquid crystal display 100.
As shown in fig. 1-2, in the present embodiment, the light emitting unit 120 is disposed on the base plate 111, and the base plate 111 is provided with a circuit for connecting the light emitting unit 120. In the present embodiment, the light emitting unit 120 may be, for example, a backlight module. The light emitting unit 120 may include, for example, a light bar 10, a back plate 20, and an optical film assembly 30. The light bar 10 comprises a substrate 11, an LED flip chip 12 and a fluorescent glue layer 13, wherein the LED flip chip 12 is arranged on the substrate 11, a light-emitting surface of the LED flip chip 12 faces away from the substrate 11, and the fluorescent glue layer 13 is arranged on the substrate 11 and covers the LED flip chip 12; the back plate 20 is provided with a containing cavity 21, a light outlet is formed in one side of the containing cavity 21, and the light bar 10 is arranged at the bottom of the containing cavity 21, wherein the light outlet surface of the LED flip chip 12 faces the light outlet; the optical film assembly 30 covers the back plate 20 and closes the light outlet. The light emitting unit 120 of the embodiment reduces the use of materials and simplifies the production process because no lens is needed, and the thickness of the whole light emitting unit 120 is reduced by 7mm to 20mm because no lens is needed, so that the thickness of the light emitting unit 120 is thinner, and the light emitting unit 120 is beneficial to the ultra-thinning of display products when applied to the display products.
As shown in fig. 2, in the present embodiment, the light bar 10 is used for providing a light source and emitting light. Wherein, lamp strip 10 includes base plate 11, LED flip chip 12 and fluorescent glue layer 13, base plate 11 is used for providing mounting substrate for LED flip chip 12 to be connected with external circuit and LED flip chip 12 electricity, with drive LED flip chip 12, LED flip chip 12 is used for sending blue light, thereby fluorescent glue layer 13 excites fluorescent particle wherein when making blue light pass through and converts white light into, with regard as the backlight source that shows the product needs. For example, the dominant wavelength of an LED flip chip is 445nm to 470 nm. Specifically, the back plate 20 is used for accommodating the light bar and supporting the optical film assembly, so that the light bar can be matched with the optical film assembly, and white light emitted by the light bar can be emitted uniformly and obtain high brightness after passing through the optical film assembly. Further, the fluorescent glue layer 13 is a mixture of fluorescent powder and transparent glue, wherein, in the LED field, the fluorescent powder has different matching modes for mixing one or more kinds of fluorescent powder, which depends on the application and the requirement of the module. For example, the module can be applied to a lighting panel lamp, a refrigerator lamp and the like when the module is a lighting module, and can be applied to a television, a notebook and the like when the module is a backlight module.
As shown in fig. 1, in the present embodiment, a blue light filter plate 121 is further disposed on the light emitting unit 120, and the blue light filter plate 121 can filter out short-wavelength blue light to reduce the damage of the short-wavelength blue light to human eyes.
As shown in fig. 1, in the present embodiment, the display unit 130 is disposed on the back frame 112, and the display unit 130 is disposed at a position opposite to the light emitting unit 120. The light emitting unit 120 provides brightness for the display unit 130, the display unit 130 is used for displaying images, and in this embodiment, the display unit 130 may be, for example, a liquid crystal display.
As shown in fig. 1, in the present embodiment, the temperature monitoring unit 140 is disposed on the display unit 130, and the temperature monitoring unit 140 is located in the housing 110. In this embodiment, the temperature monitoring unit 140 may be disposed on a non-display area of the display unit 130, for example, and the temperature monitoring unit 140 may monitor the temperature of the display unit 130 in real time, although the temperature monitoring unit 140 may also monitor the temperature inside the housing 110. When the temperature monitoring unit 140 monitors the temperature of the display unit 130, a temperature signal is formed and transmitted to the processing unit 150. In some embodiments, when the temperature monitoring unit 140 monitors the temperature inside the housing 110, the temperature signal may also be sent to the processing unit 150.
As shown in fig. 1 and 3, in the present embodiment, the processing unit 150 is disposed in the housing 110, the processing unit 150 includes a first processing unit 151 and a second processing unit 152, the first processing unit 151 is connected to the temperature monitoring unit 140, when the temperature monitoring unit 140 sends a temperature signal to the first processing unit 151, the first processing unit 151 converts the temperature signal into an electrical signal, and the electrical signal is sent to the second processing unit 152. The range of the threshold of the electrical signal, the corresponding adjustment measure of the threshold, and the corresponding change of the specific brightness value are set inside the second processing unit 152, and after receiving the electrical signal, the second processing unit 152 determines the value of the electrical signal and the threshold, and sends the result of the determination to the brightness adjusting unit 160.
As shown in fig. 1 and fig. 3, in the present embodiment, the brightness adjusting unit 160 is connected to the processing unit 151, and specifically, the brightness adjusting unit 160 may be connected to the second processing unit 152. The second processing unit 152 sends the determination result to the brightness adjusting unit 160, and the brightness adjusting unit 160 adjusts the brightness of the light emitting unit 120 according to the determination result. In this embodiment, the brightness adjustment unit 160 further includes a brightness sensor for monitoring the brightness of the display unit 130. After the second processing unit 152 receives the electrical signal, if the value of the electrical signal is greater than the maximum number of the threshold range, the second processing unit 152 sends a control signal to the brightness adjusting unit 160, and the brightness adjusting unit 160 determines and adjusts the reduced specific brightness data according to the sensed real-time brightness data of the display unit and further according to the real-time brightness data, so as to adjust the brightness of the display unit 130. If the electrical signal is within the threshold range, the electrical signal is kept intact, and if the value of the electrical signal is smaller than the minimum number of the threshold range, the second processing unit 152 sends a control signal to the brightness adjusting unit 160, and the brightness adjusting unit 160 determines and adjusts the rising specific brightness data according to the sensed real-time brightness data of the display unit 130, and further according to the real-time brightness data, and adjusts the brightness of the display unit 130.
As shown in fig. 4, the present embodiment further proposes another liquid crystal display 200, where the liquid crystal display 200 includes a light sensing unit 201, a temperature sensing unit 202, a general control unit 203, a light source controller 204 and a backlight 205. The master control unit 203 is connected with the photosensitive unit 201 and the temperature sensing unit 202, the light source controller 204 is connected with the master control unit 203, and the backlight 205 is connected with the light source controller 204. The photosensitive unit 201 collects external illumination intensity information, the temperature sensing unit 202 collects external temperature information, and the master control unit 203 controls the brightness of the backlight 205 through the light source controller 204 according to the information collected by the photosensitive unit 201 and the temperature sensing unit 202. In this embodiment, through the arrangement of the photosensitive unit 201 and the temperature sensing unit 202, the total control unit 203 can eliminate the interference of the temperature factor to the photosensitive unit 201 according to the external temperature, correct the sensing value of the photosensitive unit 201, and adjust the brightness of the backlight 205 according to the corrected illumination intensity, which can eliminate the influence of the temperature on the threshold voltage of the thin film transistor, and can more accurately adjust the brightness of the liquid crystal display panel according to the external illumination intensity, thereby improving the usability of the liquid crystal display panel.
As shown in fig. 5, fig. 5 shows a tft array substrate 30, a display region 31 and a non-display region 32 are formed on the array substrate 30, a sub-pixel is located in the display region 31, in this embodiment, in order to avoid the influence of the photosensitive unit 201 and the temperature sensing unit 202 on the display of the lcd panel, the photosensitive unit 201 and the temperature sensing unit 202 are both disposed in the non-display region 32, a cover plate (not shown) is disposed on the non-display region 32 of the lcd panel, an opening is disposed on the cover plate at a position corresponding to the photosensitive unit 201, external light can be irradiated onto the photosensitive unit 201 from the opening, an opening is not disposed on the cover plate corresponding to the temperature sensing region, and the cover plate blocks the external light from being irradiated onto the temperature sensing unit 202. In the present embodiment, the photosensitive unit 201 and the temperature sensing unit 202 share the same signal input line, but have respective current feedback lines. It is understood that in other embodiments, the photosensitive unit 201 and the temperature sensing unit 202 may have respective signal input lines. In this embodiment, the temperature sensing unit 202 can be directly a temperature sensor, the temperature sensor is connected to the master control unit 203, and transmits the sensed temperature signal to the master control unit 203, without acquiring leakage current to determine the temperature of the environment.
As shown in fig. 5, in the present embodiment, the photosensitive unit 201 and the temperature sensing unit 202 are integrated on the thin film transistor 30, and since the temperature sensing unit 202 is not irradiated by external light, and the collected leakage current is only affected by temperature, the temperature of the liquid crystal display panel can be obtained by collecting the leakage current in the temperature sensing unit 202. Since the photosensitive cell 201 can be irradiated by an external light source, the external illumination intensity can be obtained by collecting the leakage current of the photosensitive cell 201. The total control unit 203 can eliminate the influence of temperature on the threshold voltage of the tft according to the temperature and the illumination intensity, and can more accurately adjust the brightness of the backlight 205, so that the brightness of the liquid crystal display panel is adapted to the external brightness.
In summary, the present embodiment provides a liquid crystal display, which includes a temperature monitoring unit inside the liquid crystal display, the temperature monitoring unit measures the temperature of the display unit and forms a temperature signal, the processing unit converts the temperature signal into an electrical signal, and the brightness adjusting unit adjusts the brightness of the display unit according to the electrical signal, so as to alleviate the temperature change of the display unit, ensure the moderate temperature of the display unit, and prolong the service life of the whole liquid crystal display.
The above description is only a preferred embodiment of the present application and the explanation of the applied technical principle, and it should be understood by those skilled in the art that the scope of the present application is not limited to the technical solution of the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept, for example, the technical solutions formed by mutually replacing the above technical features (but not limited to) having similar functions disclosed in the present application.
Besides the technical features described in the specification, other technical features are known to those skilled in the art, and further description of the other technical features is omitted here in order to highlight the innovative features of the present invention.
Claims (10)
1. A liquid crystal display capable of adjusting brightness, comprising,
the shell comprises a bottom plate and a back plate frame, and the bottom plate and the back plate frame are vertically fixed;
the light-emitting unit is arranged on the bottom plate and comprises a light bar and a back plate, the back plate is provided with a containing cavity, and the light bar is arranged in the containing cavity;
the display unit is arranged on the back plate frame and is positioned at the position opposite to the light-emitting unit;
the temperature monitoring unit is arranged on the display unit and used for monitoring the temperature of the display unit to form a temperature signal;
the processing unit is arranged on the back plate frame, is electrically connected with the temperature monitoring unit, and processes the temperature signal to form an electric signal;
and the brightness adjusting unit is arranged on the back plate frame, is electrically connected with the processing unit and the light-emitting unit, and adjusts the brightness of the light-emitting unit according to the electric signal.
2. The liquid crystal display of claim 1, wherein the light bar comprises a substrate and an LED flip chip disposed on the substrate.
3. The liquid crystal display of claim 2, wherein the light bar further comprises a phosphor layer disposed on the substrate and covering the LED flip chip.
4. The liquid crystal display of claim 1, wherein a blue filter is further disposed on the light emitting unit.
5. The lcd of claim 1, wherein the temperature monitoring unit is disposed inside the lcd.
6. The liquid crystal display of claim 1, wherein the processing unit comprises a first processing unit and a second processing unit.
7. The LCD of claim 6, wherein the first processing unit is connected to the second processing unit.
8. The LCD of claim 6, wherein the temperature monitoring unit is connected to the first processing unit.
9. The LCD of claim 6, wherein the brightness adjusting unit is connected to the second processing unit.
10. The liquid crystal display of claim 1, wherein the brightness adjustment unit is disposed inside the liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020942863.1U CN212009214U (en) | 2020-05-29 | 2020-05-29 | Liquid crystal display capable of adjusting brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020942863.1U CN212009214U (en) | 2020-05-29 | 2020-05-29 | Liquid crystal display capable of adjusting brightness |
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| Publication Number | Publication Date |
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| CN212009214U true CN212009214U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020942863.1U Expired - Fee Related CN212009214U (en) | 2020-05-29 | 2020-05-29 | Liquid crystal display capable of adjusting brightness |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117087540A (en) * | 2023-10-17 | 2023-11-21 | 宁波铼康光电有限公司 | Anti-glare rearview mirror for vehicle |
| CN117452699A (en) * | 2023-12-20 | 2024-01-26 | 深圳市宏瑞创展科技有限公司 | Liquid crystal display driving system and method capable of intelligently adjusting parameters |
-
2020
- 2020-05-29 CN CN202020942863.1U patent/CN212009214U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117087540A (en) * | 2023-10-17 | 2023-11-21 | 宁波铼康光电有限公司 | Anti-glare rearview mirror for vehicle |
| CN117087540B (en) * | 2023-10-17 | 2024-01-19 | 宁波铼康光电有限公司 | Anti-glare rearview mirror for vehicle |
| CN117452699A (en) * | 2023-12-20 | 2024-01-26 | 深圳市宏瑞创展科技有限公司 | Liquid crystal display driving system and method capable of intelligently adjusting parameters |
| CN117452699B (en) * | 2023-12-20 | 2024-03-12 | 深圳市宏瑞创展科技有限公司 | Liquid crystal display driving system and method capable of intelligently adjusting parameters |
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Effective date of registration: 20220718 Address after: 529000 first floor, second floor and second floor of building 3 and building 7, No. 1 Caihong Road, Jianghai District, Jiangmen City, Guangdong Province Patentee after: Guangdong Jingxiang Photoelectric Technology Co.,Ltd. Address before: 1010, Jinmin building, No.8, Zizhu 6th Road, Zhuzilin, Futian District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN CHENZHONG TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |